JP6607623B1 - UV irradiation equipment - Google Patents

Abstract

An ultraviolet irradiation device that enables efficient sterilization treatment in a short time while giving priority to safety, enhances designability, and can also be used as illumination (can be used together). An ultraviolet irradiation apparatus includes an ultraviolet light emitting means capable of outputting ultraviolet light including a predetermined dominant wavelength, and a blocking means for blocking at least a part of the ultraviolet light. It is possible to switch between a blocking state and a non-blocking state. [Selection] Figure 1

Description

  The present invention relates to an ultraviolet irradiation device for performing sterilization and sterilization in a room or the like.

  In medical facilities and complex commercial facilities, countermeasures against bacteria and viruses to prevent infections are centered on various chemical disinfectant spraying and wiping methods. In addition to relying on people and drug spreaders, work requires time and labor, such as drug management. On the other hand, many accidents due to infection are reported every year, so an alternative and simple and easy technique is required.

  The wavelength in the UVC region of the short wavelength (near ultraviolet) in the ultraviolet ray (ultraviolet light) has the ability to inactivate the fungus by directly destroying the deoxyribonucleic acid (DNA) of the fungus (bacteria) by its light energy. It is known that there is a high bactericidal effect that does not produce resistant bacteria.

  For this reason, UV lamps (sterilizing lamps) capable of outputting wavelengths in the UVC region have been developed and commercialized, and are easily and conveniently used in medical / nursing sites, purification of water and sewage, and manufacturing factories mainly in the food field. It has been used as a method to effectively prevent infection, improve the environment such as water and air, and ensure food safety.

  Specifically, in the past, as a measure against germs and viruses that floated and dropped in the room, it can be easily installed on walls and ceilings. A product in which a similar ultraviolet light source is built in the machine unit is commercially available.

  By the way, particularly ultraviolet rays having a wavelength in the UVC region are dangerous when irradiated on a human body. For this reason, the conventional apparatus (ultraviolet light source for sterilization) performs sterilization by irradiating in an unmanned state (see, for example, Patent Document 1), and indirectly when avoiding the human body when irradiating in a manned state. What irradiates and sterilizes is common (for example, refer patent document 2).

  In sterilization using an ultraviolet light source lamp, the sterilization treatment is generally activated and deactivated by turning on the ultraviolet light source lamp at the timing of performing the sterilization treatment and turning it off when the sterilization treatment is not performed (in the case of manned). Has been switched.

JP-A-10-248759 Japanese Utility Model Publication No. 5-20717

  However, any of the conventional apparatuses has a limit to efficient sterilization treatment in a manned space. Specifically, an apparatus that sterilizes by irradiating ultraviolet rays in an unattended state cannot be operated during a manned period. In addition, in an apparatus that performs sterilization treatment by indirectly irradiating ultraviolet rays, even if it is configured to irradiate ultraviolet rays to a predetermined range during an unattended period, Since the direction is limited, there is a problem that it is difficult to sterilize the air in a manned space (for example, indoors) at all times.

  When the ultraviolet light source lamp is a low-pressure mercury lamp, it takes a certain time (several minutes) until the light source lamp outputs a sufficient amount of energy that can be sterilized from an off (light-off) state. For example, in hospitals etc., when another patient uses the same space after examining and treating a patient infected with a virus (strongly infectious) in the examination room or operating room, the hospital staff such as another patient or doctor It is desirable to sterilize the space in order to prevent secondary infection. However, if it takes time to start sterilization with an ultraviolet light source lamp, there is a problem that the waiting time of the patient becomes longer.

  In addition, although it is a light source, it has an effect on the human body as described above. Therefore, even though an ultraviolet light source for sterilization may be used in combination with a lighting device, it has not been assumed to be used as a lighting device.

  In view of such circumstances, the present invention enables an efficient sterilization treatment in a short time while giving priority to safety, and enhances designability, and can also be used as illumination (which can be used in combination). Is to provide.

The present invention provides an ultraviolet light emitting means in which a plurality of ultraviolet light emitting sources capable of outputting ultraviolet light having a predetermined dominant wavelength are arranged in a substantially vertical plane, and the ultraviolet light emitting means arranged opposite to the ultraviolet light emitting means. Cover means capable of forming an air flow path; and a blocking means included in the cover means, capable of switching between the ultraviolet blocking state for blocking at least part of the ultraviolet rays and the non-blocking state, The ultraviolet light emitting means irradiates the air flowing in from the lower end side of the flow path with the ultraviolet light, the physical movement of the blocking means, and / or the selection of the blocking means by controlling the material, and the blocking state and the capable configured to switch the non-blocking state, the flow path outlet configured to allow the upper end of the flow path is raised by natural convection due to the heat generation of the ultraviolet light emitting means air which has flowed from the lower side, Preparative an ultraviolet irradiation apparatus according to claim.

  In addition, the present invention forms an air flow path by natural convection between the ultraviolet light emitting means capable of outputting ultraviolet light including a predetermined dominant wavelength and at least a part of the ultraviolet light emitting means. Thus, the ultraviolet light emitting device is characterized in that the ultraviolet light emitting means and the cover means are integrally formed.

  Further, the present invention is configured to form an air flow path between the ultraviolet light emitting means capable of outputting ultraviolet light including a predetermined dominant wavelength and at least a part of the ultraviolet light and the ultraviolet light emitting means. The present invention relates to an ultraviolet irradiation apparatus comprising: a cover unit disposed opposite to the ultraviolet light emitting unit; and a conversion unit that converts a wavelength of light output from the ultraviolet light emitting unit.

  The present invention also provides an ultraviolet light emitting means capable of outputting ultraviolet light including a predetermined dominant wavelength, and a cover capable of blocking at least a part of the ultraviolet light and forming an air flow path between the ultraviolet light emitting means. And an ultraviolet irradiating device characterized in that it is configured to be switchable between a blocking state and a non-blocking state of the ultraviolet rays by the cover means.

  The present invention also includes ultraviolet light emitting means capable of outputting ultraviolet light including a predetermined principal wavelength, blocking means capable of blocking at least a part of the ultraviolet light, and conversion means for converting the wavelength of the ultraviolet light. The ultraviolet irradiation apparatus is characterized in that the ultraviolet blocking state and the non-blocking state can be switched, and the conversion means is effective in the blocking state.

  According to the present invention, while giving priority to safety, an ultraviolet light source that enables efficient sterilization treatment in a short time, enhances designability, and can also be used as illumination (can be used together). An excellent effect can be achieved.

It is a side view which shows the outline of a structure of the ultraviolet irradiation device which concerns on embodiment of this invention. It is a top view which shows the outline of a structure of the ultraviolet irradiation device which concerns on embodiment of this invention. It is a block diagram which shows an example of the circuit which performs drive control of the ultraviolet irradiation device which concerns on embodiment of this invention. (A) It is a graph which shows the relationship between the output wavelength distribution of the UV lamp with which the ultraviolet irradiation device which concerns on embodiment of this invention is equipped, and the UV absorption rate of DNA, (B) The relationship between the UV absorption rate of DNA and the disinfection rate by UV It is a graph which shows. It is a table | surface which shows the list of energy amount required for the inactivation by UV for every microbial species. It is a schematic diagram shown about switching of the interruption | blocking state and the non-blocking state in the ultraviolet irradiation device which concerns on embodiment of this invention. It is a schematic diagram shown about switching of the interruption | blocking state and the non-blocking state in the ultraviolet irradiation device which concerns on embodiment of this invention. It is a figure which shows the outline | summary of the ultraviolet irradiation device which concerns on embodiment of this invention, (A) Perspective view, (B) Top view. It is a side view showing the outline of the ultraviolet irradiation device concerning the embodiment of the present invention. It is a side view showing the outline of the ultraviolet irradiation device concerning the embodiment of the present invention. It is a figure which shows the outline | summary of the ultraviolet irradiation device which concerns on embodiment of this invention, (A) Front view, (B) Perspective view. It is a perspective view which shows the outline | summary of the ultraviolet irradiation device which concerns on embodiment of this invention. It is a perspective view which shows the outline | summary of the ultraviolet irradiation device which concerns on embodiment of this invention. It is (A) front view and (B) top view which show the outline | summary of the ultraviolet irradiation device which concerns on embodiment of this invention. It is the (A) appearance perspective view showing the outline of the ultraviolet irradiation device concerning the embodiment of the present invention, and (B) the exploded perspective view. It is a side surface schematic diagram which shows the outline | summary of the ultraviolet irradiation device which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

<First Embodiment>
First, with reference to FIGS. 1-7, the ultraviolet irradiation device 100 (100A) which concerns on 1st Embodiment of this invention is demonstrated.

<Ultraviolet irradiation device>
1 and 2 are diagrams showing an outline of the ultraviolet irradiation device 100 (100A) of the present embodiment. 1 and 2 are schematic views showing a state in which the ultraviolet irradiation device 100 is mounted in a predetermined space S (for example, a partitioned space such as a room), and FIG. 1 (A) and FIG. 1 (D). FIG. 1 is a schematic side view showing the state of the ultraviolet irradiation device 100 in a manned state, and FIGS. 1B and 1C are schematic side views showing the state of the ultraviolet irradiation device 100 in an unmanned state. 2 (A) is a schematic top view corresponding to FIGS. 1 (A) and 1 (D) showing the state of the ultraviolet irradiation device 100 in the manned state, and FIG. 2 (B) and FIG. 2 (C). It is an upper surface schematic diagram which shows the state of the ultraviolet irradiation device 100 in an unattended state. 2B corresponds to FIG. 1B, and FIG. 2C corresponds to FIG. FIG. 3 is a block diagram illustrating an example of a circuit configuration that performs drive control of the ultraviolet irradiation device 100.

  In addition, in this figure and each subsequent figure, one part structure is abbreviate | omitted suitably and drawing is simplified. In this figure and the following figures, the size, shape, thickness and the like of the members are exaggerated as appropriate.

  With reference to FIG. 1 and FIG. 2, the ultraviolet irradiation device 100 of the present embodiment has an ultraviolet light emitting means 101 and a blocking means 105, and the blocking means 105 allows the ultraviolet blocking state and the non-blocking state. It is configured to be switchable. As an example, the ultraviolet irradiation device 100 of the present embodiment is attached to a base material B (for example, a wall surface, a panel material, a plate material, etc.) in a predetermined space (disinfection target region) S, and in the non-blocking state of ultraviolet light, The space S is sterilized by irradiating the space S with ultraviolet rays (shown by broken lines in the figure for convenience).

  Here, as the definition of the direction in the present embodiment, the first direction H shown in FIGS. 1 and 2 is the horizontal direction, the second direction V is the vertical direction, and the third direction D is perpendicular to the horizontal direction and the vertical direction. In the right direction. For example, when the space S is indoors and attached to the wall surface (base material B) where the ultraviolet irradiation device 100 is located, the first direction H is the width direction of the wall surface, and the second direction V is the height of the wall surface. The third direction D is a thickness direction protruding forward from the wall surface in parallel with the floor surface.

First, “bacteria” to be sterilized in the description of the present embodiment is a general term for bacteria (bacteria, microorganisms, virus cells) that are mainly harmful to the human body (animals). It is defined as making it in an inactivated state where it does not grow any more by acting on deoxyribonucleic acid (hereinafter referred to as “DNA”) itself of the fungus by light energy, and refers to a treatment of less than 10 ⁻⁶ sterilization And

  The space (disinfection target region) S of the present embodiment is a region where a specific or unspecified human or a plurality of humans can exist, for example, a predetermined space partitioned by walls or partitions, Partitions are not essential. An example of the space S is a space (indoor) in a building such as a medical facility or a complex commercial facility, a tent provided outside, a space in a booth, and a space in a predetermined area outside.

  The ultraviolet light emitting means 101 is a means capable of outputting ultraviolet light (UV: ultraviolet) having a predetermined main wavelength. More specifically, it is possible to output light energy having a short wavelength (near ultraviolet light) in the ultraviolet light (ultraviolet light), in particular, in the UVC region, and the fungus (bacteria) deoxyribonucleic acid (DNA) is directly generated by this light energy. It has a UV light source that has the ability to inactivate bacteria by destroying it.

  The ultraviolet light emitting means 101 of the present embodiment includes, for example, a third direction D (at least on the surface of the base material B such as a wall surface, a panel material, or a plate material) where the UV light source is at least substantially perpendicular to the surface of the base material B. A plurality of ultraviolet lights can be output (emitted) in the direction of the broken line (shown in the figure), and each is disposed at a predetermined interval.

  The UV light source is, for example, a straight tube type low-pressure mercury lamp (low-pressure UV lamp) LP, and a discharge lamp (metal) that uses arc discharge light emission in mercury vapor whose internal pressure (mercury vapor pressure) during lighting is 100 Pa or less. Vapor discharge lamp). The main wavelength of the low-pressure mercury lamp (low-pressure UV lamp) LP is, for example, 250 nm to 260 nm, preferably 253 nm to 255 nm, and more preferably 253.5 nm to 254 nm (for example, 253.7 nm). .

  Further, the low-pressure mercury lamp LP is provided with an inhibiting means (not shown) that inhibits the generation of ozone at least in front of the emission direction of ultraviolet rays. The inhibiting means is, for example, a lamp bulb of a low-pressure mercury lamp LP made of ozoneless quartz glass that cuts a wavelength of 200 nm or less. Far ultraviolet rays having a wavelength of 184.9 nm among ultraviolet wavelengths react with oxygen in the air to generate ozone. The low-pressure mercury lamp LP of the present embodiment cuts the wavelength of 184.9 nm that generates ozone out of the ultraviolet rays emitted by passing through the blocking means (quartz glass lamp bulb).

  Further, a condensing means (not shown) for condensing the ultraviolet irradiation direction in a predetermined direction may be provided around or in the vicinity of the low-pressure mercury lamp LP. The light condensing means is a member having a light converging function such as a reflector, a screen, or a lens.

  Note that the ultraviolet light emitting means 101 of the present embodiment has a UV light source having an ability to inactivate bacteria by directly destroying bacterial DNA with light energy in the UVC region of the short wavelength of ultraviolet light. For example, instead of the low-pressure mercury lamp LP, a UV lamp of an LED (light emitting diode) may be used.

  As a typical light source capable of outputting ultraviolet light other than a mercury lamp, there is a UV-LED capable of obtaining energy in the ultraviolet region without using mercury. Among these UV-LEDs, the UV-LED light source that has a bright line from the UVC region to the UVB region, particularly 260 nm to 285 nm and can obtain a single wavelength, has high luminous efficiency and low illuminance, and has a long life. It also matches the energy output in the UVC region, which is the germicidal wavelength region. That is, since a high bactericidal effect can be obtained even with a UV-LED light source, a UV-LED may be used instead of the low-pressure mercury lamp LP as a light source that outputs light energy in the bactericidal wavelength region as an embodiment of the present invention. . In the case of a UV-LED, the individual UV-LEDs may be arranged in a line so as to be a linear light source, or the individual UV-LEDs may be arranged in a matrix so as to be a surface light source. Good.

  The ultraviolet light emitting means 101 desirably has a sufficient area so that the irradiation area of the ultraviolet rays to the space S is as large as possible. For example, the ultraviolet light emitting unit 101 covers most (almost the entire surface) of the wall surface of the space S where sterilization processing is performed. It is good to. Further, it is desirable that the UV lamp LP such as a low-pressure mercury lamp or UV-LED is arranged on the base material B without being biased (as uniform and even as possible).

  The blocking means 105 is disposed so as to face at least part of the ultraviolet light emitting means 101 and blocks at least part of ultraviolet rays harmful to the human body outputted by the ultraviolet light emitting means 101. Specifically, the blocking means 105 of the present embodiment blocks at least ultraviolet rays in the sterilization wavelength region (UVC region), and more specifically, for example, UVC region and UVB region (wavelengths other than the allowable reference value for the human body) (Hereinafter, the same applies to all blocking means 105 including the blocking means 105 described as simply “blocking the UVC range (wavelength) ultraviolet rays” in this embodiment). Further, the blocking means 105 of this embodiment is included in the cover means 103, for example.

  As an example, as shown in FIG. 1A, the cover means 103 is a transparent member (such as glass or resin) that can transmit ultraviolet rays having energy of at least a sterilization wavelength region (UVC region), and includes a sterilization wavelength. It is means provided so as to overlap a plate-like panel or filter (blocking means 105) that cuts off the ultraviolet rays in the area (UVC area), for example, cuts at least the wavelength in the UVC area. Alternatively, the cover unit 103 is a transparent member such as glass (for example, UV cut glass) including a UV cut material (blocking unit 105) that blocks ultraviolet rays in the sterilization wavelength region (UVC region).

  The ultraviolet light emitting means 101 of the ultraviolet irradiation device 100 of the present embodiment continuously irradiates the ultraviolet rays forward (in the ultraviolet emission direction) during normal operation (when activated, after turning on the power). Then, the cover means 103 cuts off the emission to the front (the ultraviolet emission direction) from the cover means 103 for at least the wavelength in the sterilization wavelength region (UVC region) of the ultraviolet light emitted (output) by the ultraviolet light emitting means 101. It is configured to be able to switch between a blocking state and a non-blocking state where light is emitted forward from the cover means 103.

  The switching between the blocking state and the non-blocking state by the cover unit 103 is performed by moving the blocking unit 105 relative to the ultraviolet light emitting unit 101 to switch between the blocking state and the non-blocking state of ultraviolet rays having a wavelength in the UVC region. . Hereinafter, “ultraviolet rays to be cut (cut) by the blocking means 105 (cover means 103)” means at least ultraviolet rays having a wavelength in the sterilization wavelength region (UVC region), more specifically, wavelengths in the UVC region and wavelengths in the UVB region. Of these, ultraviolet light having a wavelength harmful to the human body is meant.

  Specifically, when the cover unit 103 transmits ultraviolet light having a wavelength in the UVC region, and is provided with a blocking unit (such as a UV cut film) 105 for blocking ultraviolet light having a wavelength in the UVC region, Then, as shown in FIG. 5A, the cover unit 103 and the blocking unit 105 are disposed in front of the ultraviolet light emitting unit 101 (in the direction of emission of ultraviolet rays), and the ultraviolet rays pass through the cover unit 103 and forward (space S). ) Is blocked.

  On the other hand, in the non-blocking state, at least the blocking means 105 is moved relative to the ultraviolet light emitting means 101 so as to be retracted from the front of the ultraviolet light emitting means 101 as shown in FIG. 103 is allowed to pass through 103 and irradiate forward (space S).

  When the cover means 103 is a UV cut glass or the like that cuts ultraviolet rays having a wavelength in the UVC region (including the blocking means 105), the cover means 103 (blocking means 105) is shown in FIG. ) Is arranged in front of the ultraviolet light emitting means 101 (in the direction of emitting ultraviolet light) to block the ultraviolet light from being transmitted through the cover means 103 and irradiating the front (space S).

  On the other hand, in the non-blocking state, at least a part of the cover means 103 is moved relative to the ultraviolet light emitting means 101 so as to be retracted from the front of the ultraviolet light emitting means 101 as shown in FIG. Is allowed to irradiate the space S.

  As described above, the ultraviolet irradiation device 100 according to the present embodiment is configured to be able to switch between the blocking state and the non-blocking state by the blocking unit 105 in a state in which ultraviolet rays are output by the ultraviolet light emitting unit 101. With such a configuration, the space S can be sterilized efficiently in a short time.

  The UV lamp LP switches between the operation and non-operation of the sterilization process by turning on (lit) and off (extinguishing). However, a predetermined time is required from the state where the UV lamp LP is turned off (extinguishment) to the output for obtaining a sufficient sterilizing ability, and this time becomes longer as the off state is longer.

  Specifically, when the UV lamp LP is a low-pressure mercury lamp in particular, it depends on the lighting (temperature) environment in which the UV lamp LP is used. If about a minute has passed, it takes about 1 minute after the UV lamp LP is turned on (lit) to reach an output (peak output) that provides sufficient sterilization ability, and the previous UV lamp LP is turned off (extinguished) If about 24 hours have passed since the lamp was turned on, it takes about 2 to 3 minutes after the UV lamp LP is turned on (lighting) until it reaches an output (peak output) at which sufficient sterilization ability is obtained. When the LP is completely cooled (for example, when several hours to 24 hours have passed since the last time the UV lamp LP was turned off), the UV lamp LP is turned on (lit). After enough kill Until the output ability is obtained (peak power) to take five minutes to the time.

  In addition, the luminous efficiency of the UV lamp LP depends on the vapor pressure of mercury (evaporation temperature 48 ° C.) enclosed therein, so that the output until the predetermined output is obtained in an environment where the vapor pressure is not stable or in a high temperature environment. There is also a problem that output characteristics are not stable, such as variations in time.

  That is, if the ultraviolet light emitting means 101 is turned off (turned off) during a period when the sterilization process is not performed, it may take time to reach a predetermined output or a variation may occur in the time when the sterilization process is desired. become. Specifically, for example, in a hospital or the like, when another patient uses the same space after examining and treating a patient infected with a virus (strongly infectious) in the examination room or operating room, the other patient In order to prevent secondary infections to hospital staff such as doctors and doctors, it is desired to sterilize the space every time a patient's treatment is completed. However, if it takes a long time to start sterilization with the ultraviolet light source lamp (the time is not stable), there is a problem that the waiting time until the next patient enters the room becomes longer.

  Therefore, in the present embodiment, before the sterilization process of the space S is performed (for example, before the use of the space S is started), the light emission of the ultraviolet light emitting unit 101 is started in advance (FIG. 1A), and the sterilization process is performed. When it is not necessary (when sterilization cannot be performed, such as when it is manned), ultraviolet rays harmful to the human body are blocked by the cover means 103 (blocking means 105) (FIG. 1A). Then, when sterilization is necessary, the cover means 103 (blocking means 105) is opened to instantly switch from the blocking state to the non-blocking state (FIGS. (B) and (C)). In this case, a sufficient time has elapsed since the ultraviolet light emitting means 101 is turned on (lighted), and a sufficient output for sterilization treatment is obtained. Further, in the ultraviolet light emitting means 101, UV lamps LP are arranged in a large area such as the same level as the wall surface (evenly). For this reason, when the cover means 103 (blocking means 105) is opened, the entire room S can be directly irradiated with ultraviolet rays.

  Note that when the UV lamp is a UV-LED, the output can reach 100% immediately when the lamp is turned on, so that it is possible to control immediate lighting and immediate turning off different from the low mercury lamp.

  Here, with reference to FIG. 1D, it is preferable that the cover unit 103 is configured so that at least a part thereof is disposed to face the ultraviolet light emitting unit 101 and preferably has an opening at least at a part thereof. For example, the cover means 103 has a front cover part 103F and a side cover part 103S continuous with the front cover part 103F so as to have a U-shape when viewed from above as shown in FIG. More specifically, the ultraviolet light emitting means 101 is disposed on a certain substantially vertical surface (for example, a surface substantially perpendicular to the floor surface) in the space S, and the front cover portion 103F is connected to the ultraviolet light emitting means 101 and the third surface. Are separated by a predetermined distance D1 in the direction D, and opposed to each other in a substantially vertical plane different from this. The distance D1 between the ultraviolet light emitting means 101 and the front cover portion 103F is such that natural convection of air generated by the heat generated by the ultraviolet light emitting means 101 is possible (necessary and sufficient), and is about 100 mm to 200 mm as an example.

  The side cover part 103S is provided continuously at both ends in the first direction (width direction) H of the front cover part 103F so as to cover the ultraviolet light emitting means 101 integrally with the front cover part 103F.

  Further, the cover means 103 has openings at the upper and lower ends in the second direction (height (vertical) direction) V in FIG.

  With such a configuration, an air flow path 107 is formed in an area partitioned by the ultraviolet light emitting means 101 and the cover means 103 (an area between the cover means 103 and the ultraviolet light emitting means 101). And the ultraviolet irradiation apparatus 100 can circulate normal air after sterilization in the space S by taking in the air in the space S, irradiating the ultraviolet rays, sterilizing and discharging.

  That is, the cover means 103 (the front cover part 103F and the side cover part 103S) has a substantially rectangular parallelepiped shape together with the ultraviolet light emitting means 101, and its upper end and lower end are opened to form the air flow path 107. . The ultraviolet irradiation device 100 continuously emits ultraviolet light from the ultraviolet light emitting means 101 during operation (operation).

  In a state where the flow path 107 defined by the cover means 103 and the ultraviolet light emitting means 101 is formed (a state where the ultraviolet light emitting means 101 is covered by the cover means 103), the ultraviolet rays are irradiated to the air flowing in from the lower end side. Thus, it can flow out from the upper end side of the flow path 107. The air in the channel 107 is heated by the light emitted from the ultraviolet light emitting means 101 and rises. Since the distance D1 between the ultraviolet light emitting means 101 and the front cover portion 103F is such that natural convection of air generated by the heat generated by the ultraviolet light emitting means 101 is possible (a degree that does not inhibit natural convection and is necessary and sufficient for natural convection) By natural convection, indoor (contaminated) air enters the flow path 107 from the lower end of the flow path 107, and the air sterilized by the ultraviolet light emitting means 101 flows into the room S from the upper end of the flow path 107.

  In this way, the ultraviolet irradiation device 100 can circulate clean air without using a separate artificial and mechanical air circulation driving means. Hereinafter, the process of circulating clean air by sterilizing the air taken in by the ultraviolet irradiation device 100 and releasing it by natural convection is referred to as “circulation sterilization”.

  Note that the cover means 103 is configured to always cover the ultraviolet light emitting means 101, and if the blocking means 105 is switched between a blocking state and a non-blocking state by opening and closing the blocking means 105, the cover means 103 is in a non-blocking state even in the ultraviolet blocking state. Can also circulate and sterilize.

  On the other hand, in the case of a configuration in which the ultraviolet blocking state and the non-blocking state are switched by opening and closing the cover means 103, circulation sterilization can be performed in the blocking state.

  1 and 2 exemplify the cover unit 103, the blocking unit 105 of the present embodiment is, for example, a panel and is suspended only on the front surface of the ultraviolet light emitting unit 101 so as to be movable (openable / closable). Further, the configuration may be such that the ultraviolet blocking state and the non-blocking state can be switched by opening and closing thereof. In this case, the cover unit 103 may be provided (in a panel shape integral with the blocking unit 105) or the cover unit 103 may not be provided.

  A specific operation example of the ultraviolet irradiation device 100 will be described with reference to FIGS. 1 and 2. As an example, the blocking means 105 opens in a state of covering the front surface of the ultraviolet light emitting means 101 (FIGS. 1A, 1D, and 2A) along the surface direction of the front cover portion 103F. It is assumed that it is configured to be movable (openable / closable) to a state (FIG. 1B, FIG. 1C, FIG. 2B, FIG. 2C).

  That is, when the blocking means 105 is moved (closed) so as to cover the ultraviolet light emitting means 101 as shown in FIG. 1 (A), FIG. 1 (D), and FIG. Ultraviolet rays (ultraviolet rays of light energy in the sterilization wavelength region (UVC region), indicated by broken lines) do not pass through the cover means 103 (front cover portion 103F), and enter a blocking state where they do not travel (reach) to the front (room S). .

  On the other hand, when the blocking means 105 is moved (opened) so that the ultraviolet light emitting means 101 appears as shown in FIG. 1B, FIG. 2C, FIG. 2B, or FIG. The ultraviolet rays (ultraviolet rays having the light energy in the sterilization wavelength region (UVC region)) output from the light emitting means 101 (pass through the cover means 103 (front cover portion 103F)) and advance (arrive) forward (inside the room S). It becomes a cut-off state.

  Here, in the configuration shown in FIGS. 1B and 2B, it is assumed that the cover means 103 is fixed (not relatively moved) with respect to the ultraviolet light emitting means 101 and can transmit ultraviolet light. On the other hand, the blocking means 105 is configured to be movable not only with respect to the ultraviolet light emitting means 101 but also with respect to the cover means 103, thereby enabling switching between a blocking state and a non-blocking state.

  In this case, as shown in FIG. 1A (the same applies to FIG. 1D) and FIG. 2A, when the blocking means 105 is closed so as to cover the ultraviolet light emitting means 101, the ultraviolet light emitting means 101 outputs the signal. Ultraviolet rays do not pass through the front cover portion 103F and enter a blocking state in which they do not travel (arrive) to the front (the ultraviolet emission direction, the room S).

  On the other hand, as shown in FIGS. 1 (B) and 2 (B), by opening the blocking means 105, the ultraviolet light output from the ultraviolet light emitting means 101 passes through the cover means 103 (front cover portion 103F) and moves forward. It proceeds (arrives) to (the emission direction of ultraviolet rays, the room S).

  However, the present invention is not limited to this, and as shown in FIGS. 1C and 2C, the cover means 103 (front cover portion 103F) and the blocking means 105 are integrally provided, and the cover means 103 (front cover portion) is provided. 103F) itself may also serve as the blocking means 105. Specifically, for example, a panel-shaped blocking means 105 may be integrally provided so as to overlap at least the front cover portion 103F of the cover means 103, or at least inside the front cover portion 103F of the cover means 103. For example, a configuration in which a panel-shaped blocking means 105 is provided (built in) may be used. Alternatively, the front cover portion 103F may be configured such that the blocking means 105 such as an ultraviolet ray blocking material is contained (mixed) or applied to the material of the front cover portion 103F. In this case, the front cover portion 103F (blocking means 105) is configured to be movable (open / close) between a state where the front surface of the ultraviolet light emitting means 101 is covered and a state where it is opened.

  When the front cover 103F (blocking means 105) is moved (closed) so as to cover the ultraviolet light emitting means 101 as shown in FIGS. 1 (A) and 2 (A), it is output from the ultraviolet light emitting means 101. The ultraviolet ray does not pass through the front cover portion 103F and enters a blocking state in which it does not travel (arrive) to the front (room S).

  On the other hand, as shown in FIGS. 1C and 2C, when the front cover portion 103F (blocking means 105) is moved (opened) so that the ultraviolet light emitting means 101 appears, the ultraviolet light emitting means 101 outputs it. It becomes a non-blocking state in which the ultraviolet rays proceed (arrive) forward (room S).

  The drive control means 109 is, for example, a drive power supply and a control unit, and controls ultraviolet irradiation / non-irradiation by the ultraviolet light emitting means 101 and ultraviolet blocking / non-blocking states by the blocking means 105 (cover means 103). Perform switching control, etc. The drive control means 109 also includes an operation control breaker, a lighting control timer, a sensor related to drive control, a signal processing means from the sensor, and the like.

  The driving power source is connected to the power source of the space S, etc., and synchronizes a plurality of low-pressure mercury lamps LP, or individually turns on / off each of them efficiently. The control unit includes a control circuit including a CPU, a RAM, a ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and implements various functions by executing various programs including a control program for turning on / off the low-pressure mercury lamp LP. The RAM is used as a work area for the CPU. The ROM stores a basic OS and programs executed by the CPU.

  Ultraviolet radiation (with a wavelength in the UVC region) that can be sterilized is generally harmful to the human body. When the space S is manned, the ultraviolet irradiation device 100 of the present embodiment blocks ultraviolet rays by the blocking means 105 as shown in FIGS. 1 (A), 1 (D), and 2 (A). Thus, harmful ultraviolet rays are prevented from proceeding (arriving) into the room S (manned area).

  On the other hand, when the space S is unmanned, as shown in FIG. 1B, FIG. 1C, FIG. 2B, or FIG. The space S is irradiated as a state, and the entire space S is sterilized. In this sterilization treatment, not only furniture (such as furniture) and walls, floors, and ceilings (objects) existing in the space S, but also the air in the space S can be sterilized.

  If the flow path 107 is formed by the cover means 103 and the ultraviolet light emission means 101 regardless of whether the ultraviolet light is blocked or not, the air in the flow path 107 is sterilized and cleaned by natural convection. It is possible to circulate (circulate sterilization) of fresh air (sterilized air).

  That is, as shown in FIGS. 1A, 1B, 2D, 2A, and 2B, the cover means 103 (at least the front cover 103F can transmit ultraviolet rays). However, in the configuration in which the ultraviolet light emitting means 101 is always covered, the flow path 107 is formed even in the non-blocking state where the space S is unmanned and the blocking means 105 is opened. , The air in the space S can be sterilized, the air in the flow path 107 can be sterilized, and clean air can be circulated in the space S. If the blocking means 105 is closed when the space S is manned or the like, the irradiation of ultraviolet rays into the space S is blocked, but the air in the flow path 107 is sterilized and the space S is cleaned. Air can be circulated.

  On the other hand, as shown in FIGS. 1C and 2C, in the configuration in which the cover unit 103 also serves as the blocking unit 105, the flow path 107 is formed in the non-blocking state where the space S is unmanned and the blocking unit 105 is opened. However, the air in the space S can be sterilized by directly irradiating the space S with ultraviolet rays. When the blocking means 105 (front cover 103F) is closed when the space S is manned or the like, the irradiation of ultraviolet rays into the space S is blocked, but the air in the flow path 107 is sterilized. In addition, clean air can be circulated in the space S.

  As described above, the ultraviolet irradiation device 100 according to the present embodiment instantaneously unblocks the ultraviolet rays from the ultraviolet light emitting means 101 to the space S when the space S is unattended due to the opening of the blocking means 105 and directly enters the space S. The space S can be sterilized efficiently by irradiating ultraviolet rays over a wide range (and circulating the sterilized air through the flow path 107).

  In addition, when the space S is manned, the ultraviolet light from the ultraviolet light emitting means 101 to the space S is blocked (while maintaining the light emission) by closing the blocking means 105, while avoiding the influence of ultraviolet light on the human body, The sterilized air is circulated through the flow path 107, so that the space S can be safely sterilized. That is, even in the ultraviolet blocking state, the air sucked into the flow path 107 is sterilized by the ultraviolet light emitting means 101, rises in temperature due to heat generation, and flows out from the upper part by natural convection, thereby obtaining clean air. It can be circulated (circular sterilization is possible). In addition, since mechanical and artificial air circulation means are not used, the air is continuously sterilized without disturbing the airflow even when the space S (such as indoors) is in use (working). The number of bacteria in S can be reduced.

  FIG. 3 is a block diagram showing an example of a circuit included in the drive control means 109 of the ultraviolet irradiation device 100 according to the embodiment of the present invention. In this example, as an example, a case where six UV lamps (for example, low-pressure mercury lamps) LP1 to LP6 are caused to emit light is illustrated, but the number is not limited thereto.

  The ultraviolet irradiation device 100 is accompanied by an AC power plug that can supply electricity from the power source of the space S (for example, household and commercial power sources), and has a circuit configuration that can supply power to the stabilized power source unit 200. . The stabilized power supply unit 200 includes ballasts EB1 to EB6 that can always stably illuminate the UV lamps LP1 to LP6. The UV lamps LP1 to LP6 are connected to the ballasts EB1 to EB6, respectively. In addition, wiring is arranged with cable connectors optimal for the UV lamps LP1 to LP6, and the circuit configuration is such that supply power can be efficiently supplied to the ballasts EB1 to EB6.

  Further, the drive control means 109 may be able to individually control turning on / off of the plurality of UV lamps LP (for each lamp). Accordingly, the plurality of UV lamps LP can be turned on, blinked, or turned off by an arbitrarily set method, for example, sequentially turned on, rotated to draw a circle, or individually turned on randomly. In this way, shadows (non-irradiated portions) are not generated in the space S when ultraviolet rays are irradiated, that is, it is possible to irradiate ultraviolet rays evenly (shadows that block ultraviolet rays can be minimized).

<Inactivation treatment of bacteria by UV irradiation>
Here, inactivation of bacteria by ultraviolet irradiation will be described with reference to FIGS.

  It is known that energy having a wavelength shorter than 380 nm of the light radiation is ultraviolet radiation and has various effects on substances and organisms. The feature of light is that energy (kJ / mol) becomes stronger as the wavelength becomes shorter, and it becomes possible to degrade biological nucleic acid molecules and proteins particularly in the UVC region (100 nm to 280 nm) of ultraviolet rays.

  On the other hand, single bonds between carbons are not absorbed at wavelengths longer than 230 nm, and no chemical change is obtained, and changes in nucleic acids require absorption of photons into double bonds contained in nucleic acids. The principle of inactivation of microorganisms is that light energy with a peak at a wavelength of 260 nm is absorbed by DNA that controls the genetic information in the cell nucleus of the organism and the base of ribonucleic acid (hereinafter referred to as “RNA”). This occurs when thymine or the like dimerizes and cannot replicate any more during cell division.

  For this reason, ultraviolet (UV) lamps that can output in the UVC short wavelength UVC region can sterilize (inactivate bacteria and virus cells) to improve hygiene management, especially in food and medical industry applications. As energy that can be efficiently used, it is widely used in fields such as food, packaging and film, water treatment, and sterilization treatment of airborne and falling bacteria.

  The ultraviolet light emitting means 101 of this embodiment uses a mercury lamp (low pressure mercury lamp LP) in which mercury is contained in a discharge tube as an example of an ultraviolet lamp capable of outputting energy in the UVC region.

  FIG. 4 is a diagram showing the state of inactivation of DNA by ultraviolet rays. FIG. 4A is a diagram in which the ultraviolet ray (UV) absorption curve of DNA is superimposed on the output wavelength (spectral energy) distribution of the low-pressure mercury lamp LP. is there. The UV absorption curve is the relative value of the UV absorption rate of DNA corresponding to the UV wavelength when the absorption rate (spectral sensitivity) of DNA at a UV wavelength of 260 nm is 100, and the vertical axis in FIG. The relative value of the rate, and the horizontal axis is the UV wavelength. FIG. 2B is a UV absorption curve (solid line) of DNA and a bactericidal action curve (dashed line) by UV. The bactericidal action curve is the relative value of the DNA bactericidal rate according to the UV wavelength when the DNA bactericidal (inactivation) rate at a UV wavelength of 260 nm is 100, and the vertical axis in FIG. It is a relative value, and the horizontal axis is the UV wavelength [nm].

  As shown in FIG. 2A, the low-pressure mercury lamp LP can obtain the emission line 253.7 nm emitted when electrons are collided with mercury in the discharge tube as a main wavelength. The spectrum absorbed by the biological DNA (same for RNA) straddles the wavelength region centered at 260 nm. As already described, the bactericidal action by ultraviolet radiation is caused by damaging DNA. As shown in FIG. 5B, the bactericidal action curve indicating the bactericidal effect is the UV absorption curve of DNA. Almost matches. This is because the pyrimidine group that is continuous in the DNA dimerizes by absorbing light in this wavelength region, the genetic code is damaged, and the cells lose their differentiation ability and become inactivated.

  That is, it is possible to perform advanced disinfection (cell inactivation) treatment by efficiently irradiating target bacteria with energy 253.7 nm output from the low-pressure mercury lamp LP.

  A fluorescent lamp is used to illuminate this 253.7 nm light energy to a fluorescent material coated on the inner wall of the arc tube glass and convert it into visible light, and in the case of a germicidal lamp, the short wavelength of ultraviolet light is efficient. UV transmissive glass that can transmit well and quartz glass with higher transparency are used. There is a high-pressure mercury lamp (sometimes called a medium-pressure mercury lamp for industrial use) that has high brightness in the same type of mercury lamp and is mainly used as a street lamp, but at the same time emits a lot of heat rays. For this reason, in this embodiment, a low-pressure mercury lamp LP that can suppress heat rays and can efficiently obtain a wavelength of 253.7 nm is employed as a light source of the ultraviolet light emitting means 101.

  Further, the UV wavelength of 184.9 nm reacts with oxygen to generate ozone, which may cause deterioration of members and adverse effects on the human body. For this reason, in order to inhibit the generation of ozone by ultraviolet rays irradiated into the air from the low-pressure mercury lamp LP, the low-pressure mercury lamp LP of the present embodiment includes an inhibiting means capable of cutting a wavelength of 184.9 nm. Specifically, the inhibiting means is a quartz glass lamp bulb.

  Disinfection (inactivation) of bacteria by UV has the demerit that treatment cannot be performed unless a prescribed amount of light is applied, but on the other hand, resistant bacteria that cause problems with sterilization methods such as drugs and heat are not generated. There is an advantage that an effective treatment can be performed against bacteria.

  In FIG. 2A, the low-pressure mercury lamp LP slightly outputs a wavelength of 310 nm or more, but since the absorption rate of DNA is about 5% or less at any wavelength, from the viewpoint of bactericidal action. Can be ignored.

Here, the UV irradiation amount necessary for inactivation of bacteria (sterilization effect by ultraviolet rays) is the integrated light amount (integrated irradiation amount, exposure amount) of the light energy in the sterilization wavelength band given to the DNA of the bacteria (cells) [J / cm ² ] (Formula 1 below).

Integrated light quantity [J / cm ² ] = UV illuminance [W / cm ² ] × irradiation time [sec] (Formula 1)

The UV radiation intensity (UV intensity) is expressed as UV illuminance per certain area. Although W / m ² is used as a unit, mW / cm ² or μW / cm ² is practically used because the unit becomes large. A value obtained by multiplying the UV radiation intensity (UV illuminance) by the irradiation time (for example, seconds sec) is an integrated light amount (exposure amount) [J / cm ² (mJ / cm ^2, μJ / cm ² )].

  Although sterilization treatment with ultraviolet rays is effective for all bacteria, since the resistance (sensitivity) of ultraviolet rays differs depending on the bacterial species, the necessary ultraviolet irradiation amount is determined for each sterilization target based on the index of sterilization treatment. .

  FIG. 5 is a table showing an example of the integrated light amount required to inactivate 99.9% or more when irradiated with UV of 267 nm to 287 nm for each type of bacteria (Source: International Lighting Association (IES) Writing Handbook) It is.

Referring to the figure, for example, the integrated light amount required to sterilize 99.9% or more of influenza virus is 10500 [μJ / cm ² ], and 99.9% of Bacillus subtilis spores, which are food sterilization standard indicators, are used. The cumulative amount of light required for sterilization of at least% is 33200 [μJ / cm ² ]. That is, based on these index values, the integrated light amount of the low-pressure mercury lamp LP is set according to the bacteria to be sterilized.

<Switching means switching method>
Next, a method for switching the blocking means 105 will be described with reference to FIGS. 6 and 7 are schematic views showing an example of the switching method of the blocking means 105, and are perspective views showing the ultraviolet light emitting means 101 and the blocking means 105 in an extracted manner. As already described, the blocking means 105 may be separate from the cover means 103 or may be integrated with the cover means 103. Further, the cover means 103 may not be provided, and the flow path 107 may not be formed.

  As shown in FIG. 6, the ultraviolet irradiation device 100 of the present embodiment moves (withdraws) the blocking means 105 relative to the ultraviolet light emitting means 101, thereby blocking the ultraviolet rays (FIG. 6A). The non-blocking state (FIG. 5B) can be switched. The blocking unit 105 is a unit that cuts ultraviolet light (at least in the UVC region) and transmits visible light. In this example, the blocking means 105 is shown as a single panel.

  That is, as shown in FIG. 6A, when the blocking means 105 is closed to cover the front surface of the ultraviolet light emitting means 101, ultraviolet light (at least light having a wavelength in the UVC region) is blocked by the blocking means 105. However, other light (ultraviolet light (light having a wavelength other than the UVC region (partial UVB region)) having little influence on the human body is transmitted through the blocking means 105.

  On the other hand, when the blocking means 105 is opened (withdrawn) so that the front surface of the ultraviolet light emitting means 101 is exposed (appears) as shown in FIG. Of light) is emitted forward.

  FIG. 7 is a perspective view showing another example of switching between the blocking state and the non-blocking state by the blocking means 105. The blocking means 105 is not limited to a single panel shape as shown in FIG. 6, and may be configured by a combination of parts 105 </ b> P that are divided into a plurality of parts and can be moved individually. For example, the part 105P is configured to be capable of parallel (sliding) movement as shown in FIG. 5B, rotation (swinging) as shown in FIG.

  Specifically, as shown in FIG. 5B, the blocking means 105 is divided into a plurality of vertical directions (height directions) V, and the belt-like parts 105P are horizontally aligned (width direction) H in these vertical directions. To be slidable. In this case, in the blocking state shown in FIG. 6A, the front surface of the ultraviolet light emitting means 101 is covered, and in the non-blocking state, it slides in the width direction H as shown in FIG. It can be opened to the left and right. The number of parts 105P that slide to the left and right may be one, but by dividing each of the left and right into a plurality of pieces, the blocking means 105 can be compactly stacked even in an open state.

  Further, as shown in FIG. 3C, the blocking means 105 is divided into a plurality of horizontal directions (width directions) H, and the angle of the belt-like part 105P can be changed in these horizontal directions. For example, the plurality of parts 105P can be rotated (swinged) in a blind shape (grating shape) around a (virtual) rotation axis set along the width direction. In this case, the front surface of the ultraviolet light emitting means 101 is covered in the shut-off state shown in FIG. 5A, and in the non-cut-off state, as shown in FIG. it can.

  In this embodiment, it is desirable to irradiate a wide range without blocking the ultraviolet rays when the blocking means 105 is opened. In this case, in the case of the blind shape as shown in FIG. 5C, a part of the ultraviolet rays may be blocked by the part 105P. Therefore, a configuration in which the front in the irradiation direction is fully opened as shown in FIG.

  For example, the blocking means 105 may be configured in a curtain shape so that it can be opened and closed.

  Note that the movement (opening / closing) switching of the blocking unit 105 may be automatically controlled by the switching unit 150 or the like, or may be manually controlled, for example.

  1 and 2 show an example in which the ultraviolet irradiation device 100 (100A) is installed (fixed) on the wall surface, the ultraviolet irradiation device 100 (100A) is a part of the space S (such as a wall surface). ) And may be configured to be movable.

Second Embodiment
With reference to FIG. 8, the ultraviolet irradiation apparatus 100 (100B) of 2nd Embodiment of this invention is demonstrated. FIG. 8A is an external perspective view, and FIG. 8B is a top view.

  The ultraviolet irradiation device 100 (100B) of the second embodiment includes an ultraviolet light emitting unit 101 and a cover unit 103.

  Since the ultraviolet light emitting means 101 is the same as that in the first embodiment, description thereof is omitted. The cover means 103 blocks at least a part of the ultraviolet rays (wavelength in the UVC region) emitted by the ultraviolet light emitting means 101 from being irradiated forward, and the air flow path between the cover means 103 and the ultraviolet light emitting means 101. The ultraviolet light emitting means 101 is disposed so as to form 107. That is, the cover means 103 includes an ultraviolet blocking means 105 configured integrally therewith.

  Both the cover means 103 and the blocking means 105 of the second embodiment are provided so as to be movable integrally with the ultraviolet light emitting means 101 and do not move relative to the ultraviolet light emitting means 101 (do not open or close). Other configurations are the same as those in the first embodiment. That is, the ultraviolet light emitting means 101 continuously emits light during normal operation, and switches between the ultraviolet non-blocking state and the blocking state by opening and closing the blocking means 105 (cover means 103).

  In the ultraviolet irradiation device 100 (100B) according to the second embodiment, the air flow path 107 is always formed by the cover means 103 and the ultraviolet light emission means 101, and flows from one end (lower end) side of the flow path 107. The air is irradiated with ultraviolet rays for sterilization treatment, and the sterilized air can flow out from the other end (upper end) side of the flow path 107.

  In addition, the ultraviolet irradiation device 100B of this example is not fixed to a wall or the like of a space S (for example, indoors) (non-movable), and the ultraviolet light emitting means 101 and the cover means 103 are unitized and integrated. It is configured to be movable.

  For example, as shown in the figure, the ultraviolet irradiation device 100B is provided with a support frame 121 on the outer periphery and a leg 123 at the lower end. The leg 123 supports the ultraviolet irradiation device 100B on the floor surface or the like so as to be able to stand on its own, and prevents the flow path 107 (air inlet IN) on the lower end side from being blocked by the floor surface (of the flow path 107). The shape is not limited to the shape shown in the figure.

  Furthermore, it is preferable that the leg portion 123 is provided with a caster 125 or the like for easy movement. The leg 123 or the caster 125 may be provided with a lock mechanism (not shown) that can be switched between fixed and movable.

  Thus, the ultraviolet irradiation apparatus 100B of 2nd Embodiment is comprised by the partition type | mold (partition type | mold, partition type | mold) which can stand and move. Thereby, for example, in an arbitrary space S that is normally assumed to be manned (especially, a space S in which a sterilization apparatus or the like is not provided) can be arranged and moved as necessary. . Thereby, for example, the space can be left unattended for a short time, the blocking means 105 can be opened, and the space S can be sterilized by irradiating ultraviolet rays instantaneously and over a wide range. Further, the air in the space S can be taken in from the inflow port IN, sterilized in the flow path 107 and discharged from the outflow port OUT. That is, in the manned space S, clean air after sterilization is always circulated. Can do.

  In particular, since the ultraviolet light emitting means 101 and the cover means 103 are movable together (portable), they can be easily installed and removed at any timing and layout, and can also be used as a partition.

  Therefore, for example, when it is desired to clean the air at an arbitrary timing in a room (space S) where a plurality of persons are accommodated, or when there is a patient with strong infectivity in a hospital, a temporary tent or other facilities, etc. It can be installed and removed easily when not in use.

  In addition, as long as it is a portable type, it is not limited to the illustrated configuration, and for example, a stationary type on a floor surface or a hanging (hanging) type from a ceiling or a wall may be used.

  Further, as shown in the top view of FIG. 5B, the ultraviolet light emitting means 101 has a low-pressure mercury lamp LP disposed on both sides of the panel (plate) -like base material B, and covers the ultraviolet light emitting means 101 on both sides. The cover means 103 may be provided on the screen. That is, a plurality of UV lamps LP are provided on the first surface Sf1 of the base material B, and the first cover means 1031 is disposed so as to face and cover the first surface Sf1. A plurality of low-pressure mercury lamps LP are provided on the second surface Sf2 of the base material B, and the second cover means 1032 is disposed so as to face and cover the second surface Sf2.

  The UV lamp LP is not disposed on each of the first surface Sf1 and the second surface Sf2 of the base material B, but is shared by the frame-shaped base material B on the first surface Sf1 and the second surface Sf2. A configuration in which the UV lamp LP is arranged may be used. For example, if the frame-shaped base material B is configured to span a plurality of UV lamps LP in a ladder shape, each UV lamp LP is shared by the first surface Sf1 and the second surface Sf2 of the base material B. Can do.

  By doing in this way, in the non-blocking state, ultraviolet rays can be irradiated from both the first surface Sf1 side and the second surface Sf2 side of the base material B. In the cut-off state, the air flow path 107 is formed on both the first surface Sf1 side and the second surface Sf2 side of the base material B.

  Therefore, for example, even when the ultraviolet irradiation device 100B is arranged at a position away from the wall of the space S (indoor) as shown in the figure, the sterilization by the ultraviolet irradiation and the air circulation are performed. Sterilization can be performed.

  In the second embodiment, the cover unit 103 may not be provided, and only the blocking unit 105 may be disposed to face the front surface of the ultraviolet light emitting unit 101. In this case, although the flow path 107 is not formed, ultraviolet rays can be irradiated instantaneously and over a wide area toward the space S by opening the blocking means 105 when necessary.

<Third Embodiment>
With reference to FIG. 9, the ultraviolet irradiation apparatus 100 (100C) of 3rd Embodiment of this invention is demonstrated. FIG. 9 is a schematic diagram showing a side surface of the apparatus when the ultraviolet irradiation apparatus 100 (100C) of the third embodiment is installed in a room (space S).

  The ultraviolet irradiation device 100 (100C) of the third embodiment includes an ultraviolet light emitting unit 101, a cover unit 103, and a conversion unit 131.

  Since the ultraviolet light emitting means 101 is the same as that in the first embodiment, description thereof is omitted. Further, the cover means 103 is disposed opposite to the ultraviolet light emitting means 101 so as to form an air flow path 107 with the ultraviolet light emitting means 101. As an example, as in the first embodiment, the cover unit 103 includes a blocking unit 105 that blocks at least part of the ultraviolet rays (wavelength in the UVC region) emitted by the ultraviolet light emitting unit 101.

  As an example, all the cover means 103 of the second embodiment are provided integrally with the ultraviolet light emitting means 101 and do not move relative to the ultraviolet light emitting means 101 (do not open or close).

  That is, in the ultraviolet irradiation device 100 (100C) according to the third embodiment, the air flow path 107 is always formed by the cover means 103 and the ultraviolet light emitting means 101, similarly to the ultraviolet irradiation device 100B of the second embodiment. The air flowing from one end (lower end) side of the flow path 107 is irradiated with ultraviolet rays for sterilization treatment, and the sterilized air can flow out from the other end (upper end) side of the flow path 107.

  In addition to this, the ultraviolet irradiation device 100C of the third embodiment has a conversion means 131. The conversion means 131 is a means for converting the wavelength of the light output from the ultraviolet light emitting means 101. Specifically, the conversion means 131 is a means for converting ultraviolet light into visible light, or at least light energy in the sterilization region (UVC wavelength region). Is a means for cutting only all visible light at the same time as cutting.

  Specifically, the conversion unit 131 is, for example, a unit that attaches or contains a phosphor, and more specifically, the phosphor is, for example, a material that is capable of converting ultraviolet light into visible light and has high temporal stability. Such materials as calcium halophosphate and rare earth phosphors. The conversion means 131 is, for example, a filter that is coated (coated) on a plate material by dispersing the phosphor material as a coating liquid so that it can be coated uniformly and without gaps, as used mainly as a coating material on the inner surface of a fluorescent lamp bulb. Can be adopted.

  The conversion means 131 may also serve as the blocking means 105. In this case, for example, at least light energy in the sterilization region (UVC wavelength region) (light energy of 400 nm or less which is an ultraviolet wavelength region harmful to the human body) ) Can be applied with a phosphor coated on the surface of the UV cut filter that cuts all, or a filter (visible light conversion filter) containing the phosphor in the UV cut filter. When the conversion unit 131 also serves as the blocking unit 105, the blocking unit 105 may not be included in the cover unit 103. On the other hand, when the conversion unit 131 is not sufficient to cut light energy of 400 nm or less of ultraviolet rays, the cover unit 103 includes the above-described blocking unit 105.

  Further, as already described, the cover means 103 is a transparent member capable of transmitting visible light, and the visible light transmitted through the conversion means 131 is also transmitted through the cover means 103 and used as illumination in the space S. Can do.

  In this embodiment, as an example, a visible light conversion filter coated with a material for converting ultraviolet light into visible light is employed as an example of the conversion unit 131. The blocking means 105 is included in the cover means 103.

  Ultraviolet light output from the ultraviolet light emitting means 101 can pass through only the visible light by contacting and transmitting the conversion means 131. Further, all the light energy in the ultraviolet wavelength region harmful to the human body is cut by the blocking means 105, and can be emitted from the cover means 103 as only visible light. That is, the ultraviolet irradiation device 100 can function as an illumination or a shining wall, and there is no sense of incongruity even in a room, and a bright work environment with high interior properties can be provided.

  The conversion means 131 is configured to be able to switch between its valid state and invalid state. For example, when the room S is manned, the conversion means 131 is disposed in the ultraviolet light emission direction (front) of the ultraviolet light emission means 101 as shown in FIG. And visible light (indicated by a large broken line) is irradiated onto the space S.

  On the other hand, when the room S is unmanned, the conversion means 131 is retracted from the ultraviolet light emission direction (front) of the ultraviolet light emission means 101 as shown in FIG. Etc.) and the irradiation of visible light to the space S is stopped. In this example, the cover means 103 always covers the front of the ultraviolet light emitting means 101, and even if the irradiation of visible light is stopped by the retraction of the conversion means 131, ultraviolet light harmful to the human body is covered by the cover means 103. It is blocked by (blocking means 105), and the space S is not irradiated.

  In the case where the blocking unit 105 is not included in the cover unit 103 and the conversion unit 131 and the blocking unit 105 are combined, in the invalid state (retracted state) of the conversion unit 131 shown in FIG. Since ultraviolet rays harmful to S are irradiated, for example, a human sensor may be provided to stop the light emission of the ultraviolet light emitting means 101 when manned is detected. As already described, the ultraviolet light emitting means 101 always turns on the UV lamp LP during normal operation, and the blocking means 105 can switch between the ultraviolet blocking state and the non-blocking state for the space S. When manned is detected by a sensor or the like, the UV lamp LP is turned off with the highest priority on safety.

  As the switching method of the opening / closing of the conversion means 131, the same configuration as the switching method of the opening / closing of the blocking means 105 described in the first embodiment, such as FIGS. Further, the conversion means 131 may be always disposed in front of the ultraviolet light emitting means 101 without switching between opening and closing so that the ultraviolet light is always converted into visible light while the ultraviolet light emitting means 101 emits light.

  Note that the switching of the opening / closing of the conversion unit 131 may be automatically controlled by a switching unit (not shown) or may be manually controlled, for example.

  As described above, the ultraviolet irradiation device 100C according to the third embodiment sterilizes the air in the flow path constituted by the cover means 103 and the ultraviolet light emission means 101, and repeats the intake, sterilization, and release of air by natural convection. It can also be used as a planar lighting device that irradiates visible light detoxified to the human body into the room (space S) through the conversion means 131 while performing circulation sterilization.

  In this example, as shown in FIG. 9, a case where the ultraviolet irradiation device 100C is fixed so as to be immovable on an indoor wall surface or the like is shown, but not limited thereto, as in the second embodiment, the ultraviolet light emitting means 101 is used. The cover means 103 may be configured to be portable so that it can move integrally. Since the portable configuration is the same as that of the second embodiment, the description thereof is omitted.

<Fourth embodiment>
With reference to FIG. 10, the ultraviolet irradiation apparatus 100 (100D) of 4th Embodiment of this invention is demonstrated. FIG. 10 is a schematic diagram showing a side surface of the apparatus when the ultraviolet irradiation apparatus 100 (100D) of the fourth embodiment is installed in a room (space S).

  The ultraviolet irradiation device 100 (100D) of the fourth embodiment includes an ultraviolet light emitting means 101, a cover means 103, and a conversion means 131. The ultraviolet irradiation device 100 (100D) can be switched between an ultraviolet blocking state and a non-blocking state, and is in a blocking state. Is configured such that the conversion means 131 is effective.

  Since the ultraviolet light emitting means 101 is the same as that in the first embodiment, description thereof is omitted. Further, the cover unit 103 and the conversion unit 131 are the same as those in the third embodiment. Here, as an example, the cover unit 103 also serves as the blocking unit 105. That is, the cover unit 103 is configured to be able to transmit visible light and to block at least a part of the ultraviolet rays emitted by the ultraviolet light emitting unit 101 (at least light energy having a wavelength in the sterilization region (UVC region)). , Convert ultraviolet light into visible light.

  Further, the present invention is not limited to this, and the conversion unit 131 may also serve as the blocking unit 105. That is, the cover unit 103 is configured to transmit visible light, and the conversion unit 131 blocks at least a part of the ultraviolet light (at least light energy having a wavelength in the sterilization region (UVC region)) emitted from the ultraviolet light emitting unit 101. Alternatively, ultraviolet light may be converted into visible light.

  The blocking means 105 and the conversion means 131 are configured integrally with the cover means 103, for example. On the other hand, the cover unit 103 is configured to be movable relative to the ultraviolet light emitting unit 101, and the state of the cover unit 103 can be changed between an effective state and an invalid state.

  FIG. 5A shows the cover means 103 in an effective state, that is, an ultraviolet blocking state. In this example, the cover means 103 is closed so as to cover the front surface of the ultraviolet light emitting means 101, and the ultraviolet light emitted by the ultraviolet light emitting means 101 (light having a wavelength of at least the UVC region) is visible by the conversion means 131. The ultraviolet rays that are converted into light and effective for the human body are blocked by the blocking means 105.

  On the other hand, FIG. 5B is a diagram showing an invalid state of the cover means 103, that is, a non-blocking state of ultraviolet rays. In this case, the ultraviolet light emitting means 101 appears when the cover means 103 opens the front surface of the ultraviolet light emitting means 101 (withdraws from the front surface), and the ultraviolet light emitted by the ultraviolet light emitting means 101 (at least in the wavelength of the UVC region). Light) is irradiated forward (in the room S).

  The switching method for opening and closing the cover means 103 in this case can employ the same configuration as the switching method for opening and closing the blocking means 105 shown in FIGS. 6 and 7 of the first embodiment.

  Further, the conversion means 131 is configured to also serve as the blocking means 105, and the cover means 103 is integrally fixed to the ultraviolet light emitting means 101 so as to always cover it, so that the conversion means 131 is covered with the cover means 103 (ultraviolet light emitting means 101). May be configured to be movable relative to each other and may be opened and closed.

  In that case, in the ultraviolet blocking state by the cover means 103, the conversion means 131 (blocking means 105) is closed so as to cover the front surface of the ultraviolet light emitting means 101, and the ultraviolet light emitted by the ultraviolet light emitting means 101 (at least in the UVC region). Light having a wavelength of 2) is blocked by the conversion means 131, ultraviolet light harmful to the human body is converted into visible light, and visible light is irradiated into the room (space S) through the cover means 103.

  On the other hand, in the non-blocking state of the ultraviolet rays by the cover means 103, the conversion means 131 opens the front surface of the ultraviolet light emitting means 101 (withdraws from the front surface), and the ultraviolet light emitted by the ultraviolet light emitting means 101 (light having a wavelength of at least the UVC region). ) Is irradiated forward (in the room S) through the cover means 103.

  Thus, in the ultraviolet irradiation device 100D of the fourth embodiment, when there is no person, the space S is directly irradiated with ultraviolet rays to perform efficient sterilization. On the other hand, in the case of manned, the ultraviolet light emitted from the ultraviolet light emitting means 101 is blocked by the conversion means 131 or the cover means 103, and the ultraviolet light (ultraviolet light) is converted into visible light by the conversion means 131 and used as illumination. it can.

  FIG. 10 shows a state in which the flow path 107 is formed by separating the cover unit 103 and the ultraviolet light emitting unit 101. In this case, circulation sterilization is possible via the flow path 107 in the ultraviolet blocking state shown in FIG.

  On the other hand, in the fourth embodiment, the cover unit 103 and the ultraviolet light emitting unit 101 may be brought close to each other (contacted) so that the channel 107 (a channel capable of natural convection) is not formed.

  FIG. 10 shows a state in which the ultraviolet irradiation device 100D is fixed to a wall surface or the like of the space S (indoor), but is not limited to this, and the ultraviolet light emitting means 101, the cover means 103, and the like as in the second embodiment. May be of a portable type that can move integrally.

  The configuration of the ultraviolet irradiation device 100 of the first to fourth embodiments described above can be implemented in appropriate combination.

  Hereinafter, a specific example of the ultraviolet irradiation device 100 in which the above-described first to fourth embodiments are appropriately combined will be described.

<Example 1 of ultraviolet irradiation device>
FIG. 11 and FIG. 12 are schematic views showing an example of the case where the ultraviolet irradiation device 100 of the present embodiment is provided on the wall surface of the room (space S). FIG. 11A is a front view, FIG. 11B is a perspective view in a blocked state, and FIG. 12 is a perspective view in a non-blocked state.

  As shown in FIG. 11A, the ultraviolet irradiation device 100 of this example is arranged on one entire wall surface of the room (space S). For example, the ultraviolet light emitting means 101, the cover means 103, the upper louver 111A, the lower part It has a louver 111B, a human sensor 113, and drive control means (not shown).

  The light source of the ultraviolet light emitting means 101 is, for example, a UV lamp LP with a lamp bulb capable of irradiating ultraviolet light having a light energy in the germicidal wavelength region (ultraviolet light in the UVC wavelength region). More specifically, the UV lamp LP is a low-pressure mercury lamp or UV-LED that outputs light energy in the region of 250 nm to 285 nm, which is the wavelength band in which the DNA absorption sensitivity of cells is the highest. For the bulb of the low-pressure mercury lamp, UV high transmission glass represented by quartz glass that transmits the output main wavelength 253.7 nm with high efficiency is used. When UV-LED is adopted, a UV-LED unit type lamp is used in which a plurality of elements having a high bactericidal effect such as 265 nm or 285 nm are obtained with high efficiency and can emit light in a wide range of directions. .

  The ultraviolet light emitting means 101 is provided so as to be embedded in the wall surface, and the cover means 103 (front cover portion 103F) is disposed in front of the ultraviolet light emitting means 101 at a predetermined distance D1. The front cover portion 103F is provided, for example, in a sliding door type that covers the ultraviolet light emitting means 101. In this example, two ultraviolet irradiation devices 100 are arranged side by side, and each of the ultraviolet irradiation devices 100 is provided with two sliding door type cover means 103. The cover means 103 (front cover portion 103F) is configured to be slidable in the width direction H (left-right direction in the figure) relative to the ultraviolet light emitting means 101.

  In the ultraviolet irradiation device 100, it is only necessary that the air flow path 107 is constituted by the cover means 103 and the ultraviolet light emitting means 101, and the side cover portion 103S in this example may also be used as a wall surface.

  In this example, the cover unit 103 and the conversion unit 131 are provided integrally, and the conversion unit 131 also serves as the blocking unit 105. That is, the conversion means 131 and the blocking means 105 can be integrally opened and closed as the cover means 103 is opened and closed.

  The conversion means 131 is, for example, a plate that cuts ultraviolet rays (at least in the UVC region, a wavelength of light energy of 400 nm or less, which is an ultraviolet wavelength region harmful to the human body), and converts ultraviolet rays (ultraviolet light) into visible light. For example, the back surface of the UV cut filter (the surface irradiated with the ultraviolet light emitted from the ultraviolet light emitting means 101) is coated with a material (fluorescent paint) for converting the ultraviolet light into visible light. This is a visible light conversion filter.

The cover means (front cover portion 103F) is configured to be able to transmit visible light, and ultraviolet light output from the ultraviolet light emitting means 101 is in contact with the converting means 131 and is transmitted therethrough, so that an ultraviolet wavelength region that is harmful to the human body. All the light energy of 400 nm or less is cut by the filter plate and simultaneously converted into visible light, and the cover means 103 irradiates forward (indoors) only as visible light.
That is, the ultraviolet irradiation device 100 can function as an illumination or a shining wall, and there is no sense of incongruity even in a room, and a bright work environment with high interior properties can be provided. The blocking means 105 and the conversion means 131 may be configured separately.

  In this case, in the ultraviolet blocking state, the two sliding door type cover means 103 (and the conversion means 131) are closed to cover the front of the ultraviolet light emitting means 101 as shown on the left side of FIG. The light emitting means 101 is not exposed. Thereby, in the state which the light emission from the ultraviolet light emission means 101 continued, irradiation of the ultraviolet-ray to space S (room | chamber interior) is interrupted | blocked.

  On the other hand, in the non-blocking state of ultraviolet rays, as shown on the right side of FIG. 5A, the sliding door type cover means 103 (and the conversion means 131) are opened so that one of them overlaps the other, and the ultraviolet light emitting means 101 is exposed. It will be in the state.

  In this example, the cover means 103 stacked in two covers the front of a part of the ultraviolet light emitting means 101 even in the non-shielded state. Substantially the entire surface may be exposed. For example, substantially the entire surface of the ultraviolet light emitting means 101 is formed by providing a storage area for the cover means 103 on both outer sides (such as inside the wall surface) in the width direction H of the ultraviolet irradiation apparatus 100 or by enabling the cover means 103 to be folded. Can be exposed.

  An air inflow port IN is opened between the lower end portion of the front cover portion 103F and the floor surface, and a lower louver 111B is disposed on the front surface thereof. Similarly, an air outlet OUT is opened between the upper end of the front cover portion 103F and the ceiling, and the upper louver 111A is disposed on the front surface thereof. It is preferable that the upper louver 111A and the lower louver 111B are configured to be capable of changing (adjusting) the angle of each louver (wing).

  In this example, the upper louver 111A and the lower louver 111B may not be provided, and only the air inlet IN and the outlet OUT may be provided.

  The human sensor 113 always detects whether the room is manned or unmanned, and transmits the detection result to the drive control means 109. Although not shown, the ultraviolet irradiation device 100 includes a power source, control of turning on / off the ultraviolet light emitting means 101 (selective turning on / off of an arbitrary UV lamp LP), ultraviolet irradiation intensity control, and cover means 103. A controller (not shown) that can manually input signals such as open / close control of the.

  Based on signals from the human sensor 113 and the controller of the ultraviolet irradiation device 100, the drive control means 109 controls the power supply, the on / off control of the ultraviolet light emitting means 101, the ultraviolet irradiation intensity control, the cover means 103 and / or the shielding. The opening / closing control of the means 105 is performed. As already described, in the normal operation, the ultraviolet light emitting means 101 always turns on the UV lamp LP, and the blocking means 105 can switch between the ultraviolet blocking state and the non-blocking state for the space S. However, the drive control means 109 turns off the UV lamp LP (and / or reduces the irradiation intensity of the ultraviolet rays, or shuts down the UV 105 with the highest priority on safety when the human sensor 113 or the like detects a manned person. To be closed).

  In the ultraviolet irradiation apparatus 100, in the blocking state shown in the left side of FIG. 1A and FIG. 1B, light emission from the ultraviolet light emitting means 101 continues, but is harmful to the human body by the cover means 103 (blocking means 105). Irradiation of the ultraviolet light into the space S is blocked. At the same time, room air is taken into the flow path 107 from the lower louver 111B, and light energy is irradiated by the ultraviolet light emitting means 101 to sterilize the air. The air in the flow path 107 is heated by the heat of the ultraviolet light emitting means 101, thereby generating natural convection, and returning to the room as sterilized air from the upper louver 111A, which is repeated (circulated and sterilized). .

  Furthermore, at least a part of the ultraviolet wavelength (sterilization wavelength) output from the ultraviolet light emitting means 101 is cut and converted into visible light by the converting means 131 provided on the cover means 103 (front cover portion 103F). Thereby, when it sees from the exterior (room) of the ultraviolet irradiation device 100, the whole surface of the cover means 103 (front cover part 103F) can be utilized as illumination which emits visible light.

  On the other hand, as shown in FIG. 12, when the ultraviolet irradiation device 100 is in the non-blocking state, the ultraviolet output of the light energy in the sterilization wavelength region from the ultraviolet light emission means 101 is effective for sterilization by opening the cover means 103 (conversion means 131). In this state, the light is irradiated instantaneously and extensively forward (in the room). Thereby, light energy having a high sterilizing effect from the UV lamp LP can be directly and instantaneously directly irradiated to a portion where indoor floating bacteria or falling bacteria are attached, and sterilization and purification can be performed efficiently.

  Since the light energy in the germicidal wavelength region output from the ultraviolet light emitting means 101 is harmful to the human body, the human sensor 113 detects manned and unmanned. For example, as shown in FIG. 4B, when the human sensor 113 detects manned in the non-blocking state, the drive control means 109 stops the light emission of the ultraviolet light emission means 101 or the operation of the ultraviolet irradiation device 100. To do. Alternatively, when the human sensor 113 detects manned in the non-blocking state, the drive control unit 109 shifts to the blocking state in which the ultraviolet light emitting unit 101 is covered with the cover unit 103. Thereby, it can avoid that a harmful | toxic ultraviolet ray is irradiated to a human body.

  Further, the cover means 103 may be manually opened and closed, and in that case, an open / close detection sensor for detecting opening and closing of the cover means 103 may be provided. For example, when the opening / closing detection sensor detects the opening of the cover means 103, the detection signal of the feeling sensor 113 is transmitted to the drive control means 109, and the output of the ultraviolet light emitting means 101 is output. It is better to stop (turn off).

  According to such an ultraviolet irradiation device 100, when there is a possibility that the room is contaminated with some bacteria, or when it is necessary, the irradiation light is shadowed in all directions from the ultraviolet light emitting means 101 by setting the non-blocking state. A large amount of ultraviolet rays can be directly irradiated without generation. Therefore, for example, in a time of about several minutes, the survival rate of the bacteria (the number of surviving bacteria / the number of the first bacteria) can be reduced to 1/10 (the death rate of the bacteria is 99.9%, for example). Further, by repeatedly sterilizing before the bacteria grow (again), the room can be returned to the clean area before contamination, and a high effect on infection control can be obtained.

  The cover unit 103 may be fixed to the front of the ultraviolet light emitting unit 101 so as not to move, and the conversion unit 131 may be configured as a sliding door so that the cover unit 103 and the ultraviolet light emitting unit 101 can slide relative to each other. In this case, since the flow path 107 is formed even in the non-blocking state or the non-blocking state, circulation sterilization can always be performed.

  Further, the cover unit 103 (front cover unit 103F) or the conversion unit 131 may be configured to slide up and down or switch between opening and closing by moving the divided part 105P as shown in FIGS. .

  Furthermore, a lighting control timer may be incorporated on the UV lamp lighting circuit of the drive control means 109. As a result, the operation is performed for an arbitrarily set time, the arbitrary UV lamp LP is selectively turned on / off, or the power supply is stopped when it is unattended after a predetermined time operation (after sterilization treatment). The operation can be automated, and can be used for sterilization of indoor space by ultraviolet rays and lighting at a required place at a required time.

  As described above, the ultraviolet irradiation apparatus 100 of this example circulates and sterilizes by natural convection of air in the flow path 107 in the ultraviolet irradiation apparatus 100 with the conversion means 131 (cover means 103) closed (blocked state). It is possible to obtain planar illumination that irradiates the room (space S) with visible light that is harmless to the human body through the conversion means 131.

  Further, in a state where the conversion unit 131 is opened (non-blocking state), the ultraviolet light emitted from the ultraviolet light emitting unit 101 can be directly irradiated toward the room (space S), and the whole of the air, falling bacteria, and the like is illuminated. Thus, the space sterilization can be performed for the entire room (space S).

  Further, in the normal operation (operation) state, the ultraviolet light emitting means 101 continues to turn on the UV lamp LP even in the shut-off state, but the human sensor 113 always detects manned / unmanned, When a person enters an area that is directly irradiated with ultraviolet rays in the shut-off state, the UV lamp LP is automatically turned off before the ultraviolet rays harmful to the human body are irradiated, and the ultraviolet irradiation is stopped. can do.

  Further, on the surface of the conversion means (visible light conversion filter) 131, for example, a filter having a design (picture or pattern) rich in design may be laminated. Thereby, it is also possible to provide a lighting device that provides healing and leisure while simultaneously performing space sterilization in a medical nursing facility or a commercial facility.

  <Example 2 of ultraviolet irradiation device>

  FIG. 13 and FIG. 14 are schematic diagrams illustrating an example of a case where the ultraviolet irradiation device 100 of the present embodiment is configured to be self-supporting and portable. FIG. 13A is a perspective view in a blocked state, and FIG. 13B and FIG. 13C are perspective views in a non-blocked state. FIG. 14A is a front view showing a modification, and FIG. 14B is a top view.

  As shown in FIG. 13A, the ultraviolet irradiation device 100 of this example is a partition in which the ultraviolet light emitting means 101 and the cover means 103 can move integrally (portable) in the room (space S) and can stand independently. For example, it has ultraviolet light emitting means 101, cover means 103, human sensor 113, leg 123, caster 125, and the like. The cover unit 103 includes the blocking unit 105, but may include a conversion unit 131. Further, the conversion unit 131 may also serve as the blocking unit 105.

  In the ultraviolet irradiation device 100, ultraviolet rays harmful to the human body are blocked by the cover means 103 in the blocking state shown in FIG. At the same time, room air is taken into the flow path 107 from the air inlet IN at the lower end of the cover means 103 and is irradiated with light energy by the ultraviolet light emitting means 101 to sterilize the air. The air in the flow path 107 is heated by the heat of the ultraviolet light emitting means 101, thereby generating natural convection, and returning to the room as sterilized air from the outlet OUT at the upper end of the cover means 103, and this is repeated. (Circulated and sterilized)

  Further, when the converting means 131 is provided in the cover means 103 (front cover portion 103F), the ultraviolet wavelength output from the ultraviolet light emitting means 101 is converted into visible light. Thereby, when it sees from the exterior (room) of the ultraviolet irradiation device 100, the whole surface of the cover means 103 (front cover part 103F) can be utilized as illumination which emits visible light.

  On the other hand, as shown in FIG. 12, in the non-blocking state of the ultraviolet irradiation device 100, the cover means 103 slides to the left and right in the width direction H, and the ultraviolet light emitting means 101 is exposed. As a result, ultraviolet light having a light energy in the sterilization wavelength region is irradiated forward (indoor) from the ultraviolet light emitting means 101. It is possible to sterilize and purify efficiently by directly irradiating the indoor part where the floating bacteria or falling bacteria are attached with light energy having high sterilizing effect from the UV lamp LP.

  The ultraviolet light emitting means 101 is not directly exposed in the non-blocking state, but the cover means 103 is fixed to and covers the ultraviolet light emitting means 101, and the blocking means 105 (converting means 131) is connected to the ultraviolet light emitting means 101 and It may be configured to slide to the left and right (or up and down) relative to the cover means 103. Further, the switching method between the blocking state and the non-blocking state (the moving method of the cover unit 103 (the blocking unit 105 and the conversion unit 131)) is not limited to the illustrated one, and various modes described above can be employed.

  Also in this case, the human sensor 113 may be provided to detect manned and unmanned. For example, as shown in FIG. 5C, when the human sensor 113 detects manned in the non-blocking state, the drive control means 109 stops (turns off) the light emission of the ultraviolet light emitting means 101. Alternatively, when the human sensor 113 detects manned in the non-blocking state, the drive control unit 109 shifts to the blocking state in which the ultraviolet light emitting unit 101 is covered with the cover unit 103. Thereby, it can avoid that a harmful | toxic ultraviolet ray is irradiated to a human body.

  Further, the cover unit 103 may be manually opened and closed, and in that case, an open / close detection sensor for detecting opening / closing of the cover unit 103 may be provided. That is, when the open / close detection sensor detects the opening of the cover unit 103, the signal is transmitted to the drive control unit 109, and the output of the ultraviolet light emitting unit 101 is stopped (turns off).

  In addition to this, the configuration similar to Example 1 (FIGS. 11 and 12) of the ultraviolet irradiation device 100 may be provided.

  Thus, by adopting a self-supporting / portable type partition configuration, it is possible to provide the ultraviolet irradiation device 100 that is compact and can be easily installed or removed at any place.

  FIG. 14 is a view showing a modification of the ultraviolet irradiation device 100 of FIG. 13, in which FIG. 14 (A) is a front view and FIG. 14 (B) is a top view. The ultraviolet irradiation apparatus 100 of the present invention circulates clean air in the flow path 107 using natural convection of air. Therefore, as shown in FIG. 6A, the UV lamp LP arranged linearly (or straight tube type) may be arranged so that the longitudinal direction is substantially in the vertical direction (height direction) V. Thereby, the rise of the air in the flow path 107 can be further urged. The arrangement of the UV lamp LP is not limited to this example (the self-supporting ultraviolet irradiation device 100), and can be applied to all the ultraviolet irradiation devices 100 described in the present embodiment.

  In particular, in the case of the self-standing (FIG. 13) ultraviolet irradiation device 100, as shown in FIG. 14 (B), ultraviolet light emitting means 101 and cover means 103 may be provided on both sides thereof. Specifically, the ultraviolet light emitting means 101 has a plurality of UV lamps LP arranged on both surfaces (first surface Sf1 and second surface Sf2) of the panel (plate) -like base material B (or the first surface). The cover means 103 is provided on both surfaces (the first face Sf1 and the second face Sf2) so as to cover the ultraviolet light emitting means 101.

  Thereby, in the non-blocking state, ultraviolet rays can be irradiated from both the first surface Sf1 side and the second surface Sf2 side of the base material B. In the cut-off state, an air flow path 107 is formed on both the first surface Sf1 side and the second surface Sf2 side. Therefore, even when the ultraviolet irradiation device 100B is arranged at a position away from the wall of the space S (indoor), which also serves as a partition, sterilization by ultraviolet rays and air circulation sterilization can be performed efficiently. Both sides can also be used as illumination means.

  As described above, according to the ultraviolet irradiation device 100 of this example, the drive wheel (the caster 125) is arranged at the lower part of the device, and the unit is configured to partition the space S as a free-standing partition that can be freely moved. In the case of assuming a medical nursing room or the like, it is possible to circulate and sterilize the air while also protecting the privacy of the simultaneous occupants in the same room and also use it as lighting.

  Further, in that case, the ultraviolet irradiation device 100 is moved near the place of concern where germs and viruses are generated in the room, and the cover means 103 (conversion means 131) is moved left and right (or up and down) to thereby emit the ultraviolet light emitting means 101. By exposing the light, the light from the UV lamp LP can be directly and evenly applied to the irradiation target portion instantaneously and in a wide range, and sterilization can be performed.

  In addition, when the human sensor 113 constantly detects manned / unmanned and enters a region directly irradiated with ultraviolet rays in a non-blocking state, the human body is irradiated with ultraviolet rays harmful to the human body. The ultraviolet irradiation can be automatically stopped before (UV lamp LP is turned off).

<Example 3 of ultraviolet irradiation device>
FIG. 15 is a diagram illustrating another example of the self-supporting ultraviolet irradiation device 100. This example is also a partition-type (screen-type) ultraviolet irradiation apparatus 100, and FIG. 15 is a perspective view showing the ultraviolet irradiation apparatus 100 in a cut-off state.

  As shown in FIG. 15A, the ultraviolet irradiation device 100 (100E) includes a blocking unit 105 and a conversion unit on both surfaces (first surface Sf1, second surface Sf2) of the base material B (frame body), respectively. Cover means 103 also serving as 131 is provided.

  An air inlet IN and an outlet OUT are arranged at the upper end and the lower end of the base material (frame body), respectively, and are areas defined by the cover means 103 and the base material B (ultraviolet light emitting means 101) of the frame body. In addition, an air flow path 107 is formed.

  As a result, in the shut-off state, air is sucked from the inflow port IN, sterilized by irradiation with ultraviolet rays, and discharged from the outflow port OUT. This can be repeated to circulate and sterilize. Further, the surface of the cover means 103 (front cover portion 103F) when viewed from the outside (inside the room) of the ultraviolet irradiation device 100 while the ultraviolet ray in the energy region harmful to the human body is cut off by being transmitted through the cover means 103. It can be used as illumination that emits visible light as a whole.

  The base material B is provided with an operation control breaker 109A, a lighting control timer 109B, and the like as a part of the drive control means 109.

  The ultraviolet irradiation device 100 (100E) of this example has ultraviolet light emitting means 101 in which a plurality of UV lamps LP are fixed inside a hollow base material B (frame) as shown in FIG. The cover means 103 which serves as both the blocking means 105 and the conversion means 131 are provided on both surfaces (first surface Sf1, second surface Sf2), respectively. That is, the cover means 103 is provided on both sides of one (common) ultraviolet light emitting means 101.

  The double-sided cover means 103 is detachably fixed to, for example, engagement portions 161 provided at both ends of the base material B. For example, the cover means 103 is slid in the width direction (left and right) to engage the engagement portions. 161 is separated from the ultraviolet light emitting means 101 and is detachable.

<Example 4 of ultraviolet irradiation device>
FIG. 16 is a side view conceptually showing another example of the ultraviolet irradiation device 100.

  In the ultraviolet irradiation apparatus 100 described above, at least one of the blocking means 105 and the conversion means 131 is configured to move between a blocking state and a non-blocking state by moving a physical member relative to the ultraviolet light emitting means 101. Showed about. However, the present invention is not limited to this, and a configuration may be adopted in which a physicochemical material is electrically controlled to switch between a blocked state and a non-blocked state.

  For example, as shown in the figure, on the front surface of the ultraviolet light emitting means 101 in which the ultraviolet light source LP in the sterilization region is arranged on the base material B, the selection means 171 that can select transmission / non-transmission (in a predetermined pattern) of ultraviolet light. Place. The selection unit 171 is, for example, an electronic (electric) shutter that combines electrodes, polarizing plates (layers), light distribution layers, liquid crystals, and the like as in a liquid crystal panel.

  Further, in front of the selection unit 171, the switching unit 173A in which the material of the blocking unit 105 is selectively arranged (predetermined pattern), and the switching in which the material of the conversion unit 131 is selectively arranged (predetermined pattern). A means 173B is arranged.

  Then, the selection means 171 may be controlled electrically (electronic) to control the ultraviolet blocking state and non-blocking state, or on / off of the illumination light source.

  As described above, in the ultraviolet irradiation device 100 of the present invention, the ultraviolet light emitting means 101 emits ultraviolet light during normal operation (always), and the movement of the blocking means 105 (the cover means 102 including it) (for example, when it is manned) Opening and closing) switches between a non-blocking state and a blocking state of ultraviolet rays to the manned region.

  In conventional sterilization equipment using ultraviolet irradiation, light distribution is emphasized for safety considerations on the human body, the UV irradiation area is limited to only a part of the room, and an unirradiated area is created to sterilize the entire room. Could be incomplete. In the case of manned persons, the irradiation of ultraviolet rays is stopped (the UV lamp is turned off), and the UV lamp is turned on when necessary. In this case, since a predetermined time is required until the energy necessary for the sterilization process is output, it is not possible to respond instantaneously when sterilization is necessary, and the time limit for the human body to enter the space to be sterilized is limited. The operation is insufficient, for example, it becomes longer (for example, in the case of sterilization of the examination room, the waiting time for entering the patient becomes longer).

  On the other hand, according to the ultraviolet irradiation device 100 of the present invention, when performing sterilization while maintaining the output from the ultraviolet light emitting means 101 (lighting of the UV lamp) during normal operation, the ultraviolet blocking surface is used. The effective ultraviolet shielding area is minimized in a very short time, and the entire surface of the sterilization target area (space S) is irradiated as much as possible with the shadow minimized, and the number of bacteria in the space S is within the allowable standard in a short time. Can be reduced.

  That is, when performing the sterilization treatment, the irradiation region of the ultraviolet ray can be irradiated to the entire target region (space S) without being limited to the unmanned region, for example, and the sterilization can be performed. Irradiation can be performed instantaneously in a state of peak output of energy effective for processing. With such a configuration, an infection source in the space S (such as a room) can be efficiently processed in a short time. More specifically, when the allowable number of bacteria in the space S to be used is exceeded, the number of bacteria in the space S can be quickly reduced within the allowable number of bacteria. In addition, when there is a possibility that a bacterial species that should not be mixed in the space S to be used is mixed, the bacterial species can be sterilized quickly.

  Specifically, a large number of UV lamps LP are provided on a wide surface of the substrate B, and a large number of lamps are lit during normal operation to maintain an effective peak output for sterilization treatment. In the case of manned persons, the ultraviolet rays are entirely covered by the blocking means 105 (cover means 103), so that the room S is not irradiated. When the sterilization treatment becomes necessary, the blocking means 105 is instantaneously opened to irradiate the space S with ultraviolet light having a sterilization wavelength (irradiation with most UV lamps LP exposed). And the bacteria can be killed in a short time (1-2 minutes). After the bacteria (infectious source) are killed by this sterilization treatment, a clean state can be continued for 1 to 2 hours (even if sterilization treatment is not continued).

  In addition to this, even if it is manned by forming the flow path 107 with the cover means 103 and the ultraviolet light emitting means 101, the air passing through the flow path 107 is sterilized by irradiating with ultraviolet light and by natural convection. Clean air can be slowly lifted and discharged without power to the ceiling as a rising airflow. Thereby, clean air spreads in the space S as a downward flow without greatly disturbing the laminar flow in the space S (room). For this reason, particles that serve as a hotbed of bacteria are unlikely to accumulate, and if the bacteria are of an extent that corresponds to the bacteria generated by the dust (operators, etc.) in the space S, the number of bacteria can be reduced. Even when the sterilization treatment by the entire surface irradiation is not performed, the effect of suppressing the number of bacteria can be obtained.

  Further, for example, in the case of the movable ultraviolet irradiation device 100 shown in FIGS. 8 and 13, the irradiation area is smaller than that of the wall surface fixed type ultraviolet irradiation device 100 shown in FIG. By changing and performing sterilization, the non-irradiation region of ultraviolet rays can be easily and instantaneously reduced.

  In addition, since the standby time when performing the sterilization process (the standby time until the UV lamp LP becomes an effective output for the sterilization process) can be reduced, in particular, when the sterilization process is frequently performed, specifically, the patient Therefore, it is possible to minimize resource input and a decrease in the turnover rate in the operation and suppression of bacteria in medical institutions such as diagnosis, treatment, surgery, and treatment.

  The ultraviolet irradiation apparatus 100 according to the present embodiment described above is not limited to general households and companies, and in particular, facilities that may cause many infections, such as hospitals, nursing facilities, complex commercial facilities, airports, and station waiting stations. Safe and effective airborne bacteria, falling bacteria, and virus suppression and sterilization treatment can be performed by using it in facilities where infection prevention is essential, such as rooms and corridors where food is used, and factories that handle food. be able to. At the same time, in the manned area, it can be used as lighting with elaborate design through the conversion means 131, and it is a system that balances improvement and maintenance of air circulation sterilization while creating a healing space Can be used widely.

  In the above example, the case where the ultraviolet light emitting unit 101 is provided on a substantially vertical plane has been described as an example, but a configuration in which it is provided on an inclined surface or a horizontal plane may be used. That is, the openings serving as the air inlet IN and the air outlet OUT are not limited to the upper and lower sides of the ultraviolet irradiation device 100 in the vertical direction V, and may be provided on the left and right sides. When the ultraviolet light emitting means 101 is provided on a horizontal plane, an airflow control means (such as a circulator) that promotes the intake of air in the space S and the discharge of air after sterilization may be provided.

  In addition, the ultraviolet irradiation device of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

  The ultraviolet irradiation device 100 of the present invention can be used in the field of industries related to medical care and health maintenance.

DESCRIPTION OF SYMBOLS 100 Ultraviolet irradiation apparatus 101 Ultraviolet light emission means 103 Cover means 103F Front surface cover part 103S Side surface cover part 105 Blocking means 107 Flow path 109 Drive control means 111A Upper louver 111B Lower louver 113 Human sensor 121 Support frame 123 Leg part 125 Caster 131 Conversion means 131 Conversion means 161 Engagement part 163 Reflection mirror 171 Selection means 173 Switching means 200 Stabilization power supply part B Base material

Claims (7)

Ultraviolet light emitting means in which a plurality of ultraviolet light emitting sources capable of outputting ultraviolet light including a predetermined dominant wavelength are arranged in a substantially vertical plane;
Cover means arranged to face the ultraviolet light emitting means and capable of forming an air flow path with the ultraviolet light emitting means;
A blocking means that is included in the cover means and is capable of switching between an ultraviolet blocking state that blocks at least a part of the ultraviolet light and a non-blocking state;
The ultraviolet light emitting means irradiates the ultraviolet light to the air flowing from the lower end side of the flow path,
The blocking state and the non-blocking state can be switched by physical movement of the blocking means and / or selection of the blocking means by controlling material,
The flow path is configured to be able to flow out from the upper end of the flow path by raising the air flowing from the lower end side by natural convection due to heat generated by the ultraviolet light emitting means.
An ultraviolet irradiation device characterized by that. In the state in which the ultraviolet light is output by the ultraviolet light emitting means, the blocking means is moved relative to the ultraviolet light emitting means so as to be able to switch between the previous blocking state and the non-blocking state.
The ultraviolet irradiation device according to claim 1. The dominant wavelength is the wavelength of the sterilization region,
The blocking means blocks the wavelength of the sterilization region;
The ultraviolet irradiation device according to claim 1 or 2, wherein Control means for automatically controlling switching between the shut-off state and the non-cut-off state by the shut-off means;
The ultraviolet irradiation device according to any one of claims 1 to 3, wherein The cover means is configured to transmit visible light.
The ultraviolet irradiation apparatus according to any one of claims 1 to 4, wherein The blocking means is disposed opposite to one surface of the ultraviolet light emitting means,
Comprising other blocking means disposed opposite to the other surface of the ultraviolet light emitting means,
The ultraviolet irradiation device according to any one of claims 1 to 5, wherein Conversion means for converting the wavelength of the light output by the ultraviolet light emitting means;
The ultraviolet irradiation apparatus according to any one of claims 1 to 6, wherein