WO2014174589A1 - Light source device and projection-type display device - Google Patents

Light source device and projection-type display device Download PDF

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Publication number
WO2014174589A1
WO2014174589A1 PCT/JP2013/061883 JP2013061883W WO2014174589A1 WO 2014174589 A1 WO2014174589 A1 WO 2014174589A1 JP 2013061883 W JP2013061883 W JP 2013061883W WO 2014174589 A1 WO2014174589 A1 WO 2014174589A1
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WO
WIPO (PCT)
Prior art keywords
flow path
light source
inlet
installation surface
source device
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Application number
PCT/JP2013/061883
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French (fr)
Japanese (ja)
Inventor
栄介 山下
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
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Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to JP2015513396A priority Critical patent/JP6061362B2/en
Priority to PCT/JP2013/061883 priority patent/WO2014174589A1/en
Publication of WO2014174589A1 publication Critical patent/WO2014174589A1/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Definitions

  • the present invention relates to a light source device including an arc tube and a blower for cooling the arc tube, and a projection display device including the light source device.
  • Some projection display devices that project image light include a light source device having an arc tube such as an ultra-high pressure mercury lamp.
  • the arc tube has an elongated shape and encloses a bulb provided in the center that houses a pair of electrodes that emit light by discharge, and a conductive member for supplying power to each electrode of the pair of electrodes from both ends.
  • a sealing portion can be formed of glass. In the sealing portion, a contact portion between the conductive member and the glass, a welded portion that connects the conductive member and the electrode, and the like are formed.
  • the electric arc (arc) formed in the bulb by the discharge draws a convex arc in the direction opposite to gravity, and the hot gas in the bulb rises by buoyancy. For this reason, the temperature of the portion of the valve that is vertically above becomes higher than the temperature of the portion of the valve that is vertically below. Therefore, in order for the bulb to maintain an appropriate light emission state, it is necessary to reduce the temperature difference of the whole bulb while suppressing the temperature of the portion of the bulb that is vertically above to a predetermined value or less. If the temperature of the bulb is not maintained within an appropriate range, the life of the arc tube may be shortened due to cloudiness or blackening of the bulb, or a light emission abnormality such as flicker may occur.
  • Projection type display device is usually placed on a table such as a floor (hereinafter referred to as “floor installation”).
  • floor installation a table such as a floor
  • the projection display device may be hung on the ceiling so that the light source device is held in the direction opposite to the direction of gravity as compared with the case of floor installation (hereinafter referred to as “ceiling installation”).
  • the portion of the valve that is above the vertical direction when installed on the floor is located below the vertical direction of the valve when installed on the ceiling.
  • the portion of the valve that is vertically lower when the floor is installed is positioned above the valve when the ceiling is installed. That is, the part vertically above the bulb where the temperature rises differs between when the floor is installed and when the ceiling is installed. For this reason, the portion of the valve where heat is likely to be generated changes.
  • Patent Document 1 discloses an image supply apparatus having a configuration in which air that cools the upper half of the valve and air that cools the lower half of the valve are sent to the valve through different air guide paths.
  • the cooling air is directed evenly to the upper half and the lower half of the valve.
  • the temperature difference between the upper and lower halves of the bulb is 100 ° C to 150 ° C, and the life of the arc tube is reduced due to white turbidity or blackening of the bulb, or flickering, etc. This could cause abnormal emission of light.
  • a projection display device may be placed at an angle of 90 degrees from an installation surface such as a floor or a table (hereinafter referred to as “horizontal installation”).
  • the optical components of the projection display device are arranged so that the light emission direction in the light source device and the projection direction of the image from the projection display device form an angle of 90 °.
  • Patent Document 2 discloses a method for cooling an arc tube in three postures of different projectors.
  • the flow path through which the cooling air flows is divided into three parts with respect to the arc tube.
  • the vertical direction When the two upper flow paths are selected and installed sideways, the flow direction is selected by the wind direction switching unit that selects the three flow paths, and the cooling air is supplied.
  • the contact portion between the conductive member and the glass formed in the arc tube sealing portion and the welded portion connecting the conductive member and the electrode become hot due to light irradiation from the bulb and may be damaged. Therefore, it is necessary to maintain the sealing part located at the end of the arc tube at a predetermined temperature or lower.
  • the arc tube In order to efficiently use the generated light, the arc tube is generally disposed in a reflector that emits light generated by the bulb in one direction. In this case, since the reflection efficiency is best when a bulb serving as a light emitting point is arranged at the focal position of the reflector, the bulb and one sealing part are often arranged in the reflector. However, in the case of such a configuration, not only the bulb that emits light, but also the sealing portion located in the reflector is likely to become high temperature, so cooling of the sealing portion must be strengthened.
  • Patent Document 2 The method disclosed in Patent Document 2 is considered for cooling the valve, but is not considered for cooling the sealing portion. Therefore, it is difficult to keep the sealing portion below a predetermined temperature.
  • An object of the present invention is to provide a light source device and a projection display device capable of appropriately cooling an arc tube regardless of whether the longitudinal direction of the arc tube is a horizontal direction or a vertical direction.
  • the light source device of the present invention supplies power to a housing having an installation surface, a bulb that houses a pair of electrodes that emit light by discharge, and a pair of electrodes that are provided facing each other across the bulb.
  • Two arcuate tubes including two conductive members and two sealing portions sealed with the two conductive members, the arc tube disposed in parallel to the installation surface, a concave reflecting surface, and the arc tube
  • One of the sealing portions is accommodated so as to be surrounded by a reflecting surface, and has a reflector that forms a space with one surface open, a blower, and a duct.
  • the duct includes an inflow port into which gas from the blower device flows, a first flow path into which gas from the inflow port flows in, and jets gas toward the first portion far from the installation surface of the valve;
  • the gas from the inlet flows in, the second flow path for ejecting the gas toward the second portion of the valve close to the sealing portion, and the gas from the inlet flows in, close to the installation surface of the valve
  • the third flow path that ejects gas toward the third portion, the first opening and the second opening that eject gas toward the sealing portion, and the self-weight according to the orientation of the installation surface with respect to the vertical direction
  • a first blocking member that moves by blocking the inlet of the first flow path or the second flow path to block the gas from the flow inlet or direct to the first opening; and Depending on the orientation of the installation surface, it moves by its own weight and closes the inlet of the second channel or the inlet of the third channel.
  • Shut off gas from the inlet or comprises a second closing member for directing the second
  • FIG. 1 is an external perspective view of a projection display device including a light source device according to an embodiment of the present invention. It is a perspective view which shows the optical component which performs the optical process of a projection type display apparatus, and the main components around an optical component. It is a schematic diagram which shows the state by which the projection type display apparatus was installed on the floor. It is a schematic diagram which shows the state by which the projection type display apparatus was installed in the ceiling. It is a schematic diagram which shows the state by which the projection type display apparatus was installed sideways. It is detail drawing of a lamp unit. It is the perspective view which looked at the lamp holder vicinity in the floor-mounted installation state from the opposite side to the lamp unit.
  • FIG. 8A It is the perspective view which looked at the lamp holder vicinity in the floor-mounted installation state from the lamp unit side. It is a schematic perspective view of a duct. It is a schematic diagram which shows the flow of the cooling air in the duct at the time of floor-standing installation. It is a schematic diagram of the AA cross section of FIG. 8A which shows the flow of the cooling air from the duct at the time of floor-standing installation. It is a schematic diagram of the BB section of Drawing 8A showing the flow of the cooling air from the blower outlet for the 1st valve at the time of floor-standing installation. It is a schematic diagram of CC section of FIG. 8A which shows the flow of the cooling air from the 2nd sealing part blower outlet at the time of floor-standing installation.
  • FIG. 9B is a schematic diagram of the DD cross section of FIG. 9A showing the flow of cooling air from the duct during ceiling installation.
  • FIG. 9B is a schematic diagram of the EE section of Drawing 9A showing the flow of the cooling wind from the blower outlet for the 3rd valve at the time of ceiling installation.
  • FIG. 10A which shows the flow of the cooling air from the duct at the time of horizontal installation. It is a schematic diagram of the HH section of Drawing 10A showing the flow of the cooling wind from the 2nd valve outlet at the time of sideways installation.
  • FIG. 10B is a schematic diagram of the II cross section of FIG. 10A, showing the flow of cooling air from the first and second sealing portion outlets when installed sideways.
  • It is a schematic perspective view of a duct which shows the internal structure of a duct.
  • It is a schematic diagram of the cross section of a duct in a floor-standing installation state. It is a schematic diagram of the cross section of a duct in a ceiling-suspended installation state.
  • It is a schematic diagram of the cross section of a duct in a horizontal installation state.
  • FIG. 1 is an external perspective view of a projection display device including a light source device according to an embodiment of the present invention.
  • the projection display device 15 includes a housing 12 that houses each component, and a projection lens 14 that projects light that forms an image onto a screen or the like.
  • the surface of the housing that faces the installation surface is set as the installation surface 13.
  • FIG. 2 shows an optical component that performs optical processing of the projection display device 15 and main components around the optical component. These components are accommodated in the housing 12.
  • the projection display device 15 includes a light source device 20 and an optical engine 16.
  • the light emitted from the lamp unit (not shown, see FIG. 4) of the light source device 20 is optically processed by optical components inside the optical engine 16 and then projected onto a screen or the like through the projection lens 14.
  • the light emitted from the light source device 20 is bent 90 degrees by the optical engine 16. That is, the light emitting direction of the light source device 20 and the image projection direction (projection light direction) from the projection display device form an angle of 90 °.
  • the lamp unit is cooled by wind that is generated in the blower 18 and flows through the passage 19 and the duct (not shown, see FIG. 5) or the reflector back side cooling air flow path 31.
  • FIG. 3A to 3C show examples of installation postures of the projection display device 15.
  • FIG. 3A shows a state where the projection display device 15 is installed on the floor.
  • the projection lens 14 projects the horizontally long light L in a direction substantially along the horizontal plane.
  • FIG. 3B shows a state in which the projection display device is suspended from a ceiling.
  • the projection lens 14 projects the horizontally long light L in a direction substantially along the horizontal plane in the ceiling-mounted installation posture.
  • FIG. 3C shows a state in which the projection display device is installed sideways.
  • the projection display device 15 is directed so that the projection lens 14 projects the vertically long light L substantially along a horizontal plane.
  • the arc tube 48 (see FIG. 4) faces vertically upward.
  • FIG. 4 is a detailed view of the lamp unit 40.
  • the lamp of the present embodiment is an ultra-high pressure mercury lamp, and the arc tube 48 held by the reflector 50 through the reflector base 52 contains a pair of electrodes that emit light by discharge and a pair of electrodes, and emits light by discharge.
  • the substantially spherical valve 44 and sealing portions 45 and 46 that extend in the opposite directions from the valve 44 and accommodate a conductive member that supplies power to the pair of electrodes in the valve 44 are configured.
  • This conductive member is made of, for example, a foil-like metal.
  • the sealing portions 45 and 46 hermetically seal the conductive member.
  • the sealing parts 45 and 46 can be formed of glass.
  • the arc tube 48 is held by the reflector base 52 by an adhesive mainly composed of an inorganic material.
  • One sealing portion 45 may extend from the valve 44 toward the open surface of the space formed by the reflector 50.
  • the other sealing portion 46 may extend from the bulb 44 through the bottom of the reflector 50 to the rear of the reflector 50. Further, since the valve 44 and the one sealing portion 45 are disposed so as to be surrounded by the reflector 50, one sealing portion 45 is likely to be hotter than the other sealing portion 46.
  • the part 45 needs to be cooled as compared with the other sealing part 46.
  • the reflector 50 has a concave reflecting surface and forms a space for accommodating the arc tube 48.
  • the space is open on one side.
  • the light from the arc tube 48 is reflected directly or by the reflector 50, exits from the open surface of the space, and enters the optical engine 16.
  • the valve 44 is preferably disposed near the bottom of the reflector 50.
  • the light emission base point of the discharge of the bulb 44 draws a convex arc on the opposite side of the direction of gravity, and the hot gas in the bulb 44 moves upward (vertically upward) with respect to the gravity.
  • the temperature is higher in the vertical direction than in the vertical direction.
  • white turbidity occurs and the life is shortened.
  • the temperature is lower than the predetermined temperature range, the luminance is reduced or flicker occurs, or the lifetime is shortened due to blackening.
  • the temperature of the hermetic sealing portion between the glass tube and the conductive member becomes higher than the appropriate temperature, oxidation of the conductive member is promoted, and rupture or non-lighting occurs.
  • the temperature of one sealing portion 45 that seals the conductive member is increased by light irradiation from the bulb 44.
  • the temperature of the sealing part 45 becomes higher than a predetermined value, oxidation of the conductive member is promoted, and the arc tube 48 may rupture or the bulb 44 may not light up. Therefore, it is desirable to maintain the temperature of the entire valve 44 within a predetermined range and to maintain the temperature of the sealing portion 45 at a predetermined value or less.
  • FIG. 5 is a perspective view of the vicinity of the lamp holder 42 in a floor-mounted state as viewed from the side opposite to the lamp unit 42.
  • FIG. 6 is a perspective view of the vicinity of the lamp holder 42 when viewed from the lamp unit 40 in the floor-mounted state.
  • FIG. 7 is a schematic perspective view of the duct 30. In FIG. 6, the lamp unit 40 is omitted.
  • a duct 30 Adjacent to the lamp holder 42 that holds the lamp unit 40, a duct 30 is provided through which cooling air for cooling the bulb 44 and the sealing portion 45 passes.
  • the duct 30 communicates with the inlet 1, the first flow path 5 communicating with the inlet 1 and the first valve outlet 2, and the inlet 1 and the second valve outlet 3.
  • a stopper outlet 9 and a first sealing plate 10 and a second sealing plate 11 are provided as closing members.
  • the first flow path 5 is disposed at the uppermost part (the side far from the installation surface 13), and the second flow path 6 and the third flow path 7 are directed downward from the first flow path. And are arranged in order.
  • the first to third valve outlets 2, 3, 4 are arranged at equal intervals.
  • the cooling air from the first valve outlet 2 cools the portion of the valve 44 far from the installation surface 13 (first portion), and the cooling air from the second valve outlet 3
  • the portion close to the sealing portion 45 (second portion) is cooled, and the cooling air from the third valve outlet 4 causes the portion close to the installation surface 13 of the valve 44 (third portion). Cooling.
  • the first to third valve outlets 2 to 4 are provided on the side surface of the duct 30. Therefore, the directions of the first to third channels 5 to 7 are different between the inlets of the channels 5 to 7 and the first to third valve outlets 2 to 4 that are outlets. Accordingly, each flow path 5-7 is curved. Since the cooling air passing through the second flow path 6 needs to cool a portion (second portion) of the valve 44 close to the sealing portion 45, the curvature of the second flow path 6 is the first This is larger than the curvature of the flow path 5 and the third flow path 7. The curvatures of the first flow path 5 and the third flow path 7 are the same.
  • a first sealing portion outlet 8 is provided upstream of the first valve outlet 2 in the direction in which the cooling air flows, and the second sealing portion outlet is upstream of the third valve outlet 4.
  • a blowout port 9 is provided. The sealing portion 45 is cooled by the cooling air from the first sealing portion outlet 8 and the second sealing portion outlet 9.
  • the first sealing portion outlet 8 and the second sealing portion outlet 9 are smaller than the first to third valve outlets 2, 3, 4.
  • the sealing plates 10 and 11 have a flat plate portion 23 extending linearly and a refracting portion 24 connected to the flat plate portion 23 and having an angle with respect to the flat plate portion 23 (see FIG. 7).
  • the duct 30 is a first rotation located between the first flow path 5 and the second flow path 6 and upstream of the first sealing portion outlet 8 in the direction of the flow of the cooling air.
  • a second rotation located between the shaft 21 and the second flow path 6 and the third flow path 7 and upstream of the second sealing portion outlet 9 in the direction of the flow of the cooling air And a shaft 22.
  • the refracting portion 24 is positioned downstream of the first rotation shaft 21 in the direction of the flow of the cooling air, and the tip of the refracting portion 24 has a direction opposite to the installation surface 13.
  • the end portion of the flat plate portion 23 opposite to the refracting portion 24 is rotatably supported by the first rotation shaft 21 so as to face.
  • the refracting portion 24 is positioned downstream of the second rotating shaft 22 in the direction of the flow of the cooling air, and the tip of the refracting portion 24 faces the installation surface 13.
  • the end portion of the flat plate portion 23 opposite to the refracting portion 24 is supported by the second rotating shaft 22.
  • the first sealing plate 10 and the second sealing plate 11 can be rotated by their own weight.
  • Cooling air supplied from the blower 18 to the duct 30 flows into the inlet 1 and passes through any of the outlets 2 to 4, 8, 9, and mainly cools the valve 44 and the sealing portion 45. Thereafter, the air is exhausted from the cooling air outlet 32 to the outside of the light source device.
  • a reflector back side cooling air flow path 31 Adjacent to the duct 30, there is provided a reflector back side cooling air flow path 31 that guides the cooling air to the back side of the reflector 50.
  • FIG. 8A is a schematic diagram showing the flow of cooling air in the duct when installed on the floor.
  • FIG. 8B is a schematic view of the cross section of FIG. 8A showing the flow of cooling air from the duct when installed on the floor.
  • FIG. 8C is a schematic diagram of the BB cross section of FIG. 8A showing the flow of cooling air from the first valve outlet when the floor is installed.
  • FIG. 8D is a schematic diagram of the CC cross section of FIG. 8A showing the flow of cooling air from the second sealing part outlet when the floor is placed.
  • the arrow in a figure has shown the flow of the cooling air (gas).
  • the first sealing plate 10 and the second sealing plate 11 rotated by their own weight respectively block the inlet of the second flow path 6 and the inlet of the third flow path. Cooling air from the blower 18 flows into the inlet 1 of the duct 30. The cooling air that has flowed into the duct 30 passes only through the first flow path 5, is ejected from the first valve outlet 2, and mainly cools the first portion of the valve 44.
  • the first sealing portion outlet 8 exists between the inflow port 1 and the first flow path 5, most of the cooling air passes through the first sealing portion outlet 8 due to the inertia of the cooling air. Then, the cooling air is ejected from the first valve outlet 2.
  • the cooling air flowing in from the inflow port 1 is blocked by the first and second sealing plates 10 and 11 and does not flow into the second and third flow paths 6 and 7. Then, the cooling air blocked by the second sealing plate 11 is changed in flow direction, and is ejected from the second sealing portion outlet 9 to mainly cool the sealing portion 45.
  • the cooling air can be ejected from the first valve outlet 2 that can eject the cooling air toward the first portion located vertically above the valve 44 and cooled toward the sealing portion 45. Cooling air can also be ejected from the second sealing portion outlet 9 from which air can be ejected.
  • FIG. 9A is a schematic diagram showing the flow of cooling air in the duct when installed on the ceiling.
  • FIG. 9B is a schematic diagram of the DD cross section of FIG. 9A showing the flow of cooling air from the duct during ceiling installation.
  • FIG. 9C is a schematic diagram of the EE cross section of FIG. 9A showing the flow of the cooling air from the third valve outlet during ceiling installation.
  • FIG. 9D is a schematic view of the FF cross section of FIG. 9A showing the flow of the cooling air from the first sealing portion outlet when the ceiling is installed.
  • the arrow in a figure has shown the flow of the cooling air (gas).
  • the first sealing plate 10 and the second sealing plate 11 rotated by their own weights block the inlet of the first channel 5 and the inlet of the second channel 6, respectively. .
  • Cooling air from the blower 18 flows into the inlet 1 of the duct 30.
  • the cooling air that has flowed into the duct 30 passes only through the third flow path 7 and is ejected from the third valve outlet 4 to mainly cool the third portion of the valve 44.
  • the cooling air flowing in from the inflow port 1 is blocked by the first and second sealing plates 10 and 11 and does not flow into the first and second flow paths 5 and 6. Then, the cooling air blocked by the first sealing plate 10 is changed in flow direction, and is ejected from the first sealing portion outlet 8 to mainly cool the sealing portion 45.
  • the cooling air can be ejected from the third valve outlet 4 that can eject the cooling air toward the third portion positioned vertically above the valve 44 and cooled toward the sealing portion 45. Cooling air can also be ejected from the first sealing portion outlet 8 from which air can be ejected.
  • FIG. 10A is a schematic diagram showing the flow of cooling air in the duct when installed on the ceiling.
  • FIG. 10B is a schematic diagram of the GG cross section of FIG. 10A showing the flow of cooling air from the duct during ceiling installation.
  • FIG. 10C is a schematic view of the HH cross section of FIG. 10A showing the flow of cooling air from the third valve outlet when the ceiling is installed.
  • FIG. 10D is a schematic diagram of the II cross section of FIG. 10A showing the flow of the cooling air from the first sealing portion outlet when the ceiling is installed.
  • the arrow in a figure has shown the flow of the cooling air (gas).
  • the inlet of the first channel 5 and the inlet of the third channel 7 are respectively closed by the first sealing plate 10 and the second sealing plate 11 rotated by their own weight.
  • Cooling air from the blower 18 flows into the inlet 1 of the duct 30.
  • the cooling air that has flowed into the duct 30 passes only through the second flow path 6 and is ejected from the second valve outlet 3 to mainly cool the second portion of the valve 44.
  • the cooling air flowing from the inlet 1 is blocked by the first and second sealing plates 10 and 11 and does not flow into the first and third flow paths 5 and 7. Then, the cooling air blocked by the first sealing plate 10 is changed in flow direction, and is ejected from the first sealing portion outlet 8 to mainly cool the sealing portion 45. Further, the cooling air blocked by the second sealing plate 11 is changed in the flow direction, and is ejected from the second sealing portion outlet 9 to mainly cool the sealing portion 45.
  • the cooling air can be ejected from the second valve outlet 3 from which the cooling air can be ejected toward the second portion of the valve 44 positioned vertically above.
  • the sealing unit 45 in the sideways installation state, since the tip of the sealing unit 45 is directed vertically upward, the sealing unit 45 is hotter than the floor-standing installation state or the ceiling suspension installation state.
  • the cooling air in the horizontal installation state, unlike the floor installation state and the ceiling suspension installation state, the cooling air is sealed from two locations, the first sealing portion outlet 8 and the second sealing portion outlet 9. It can be ejected to the stop 45. Therefore, the temperature rise of the sealing part 45 can be suppressed.
  • the portion of the bulb 44 that is vertically above in each installation state includes not only the posture in which the arc tube is parallel to the horizontal direction but also the posture in parallel to the vertical direction. Can be cooled. Furthermore, although the sealing part 45 can be cooled in each installation state, in the sideways installation state, the sealing part 45 that is particularly likely to reach a high temperature can be effectively cooled.
  • FIG. 11 is a schematic perspective view of the duct showing the internal structure of the duct 60.
  • a part of the wall surface of the duct 60 is omitted for easy understanding of the internal structure. Note that a description of the same configuration as that of the above-described embodiment is omitted.
  • the guides 63 are provided on the side surfaces of the duct 60 between the flow paths 5 to 7 of the duct 60 and the first and second sealing portion outlets 8 and 9, respectively. Yes.
  • a first sphere 61 (a side farther from the installation surface 13) and a second sphere 62 (a side closer to the installation surface 13) are sandwiched between the guides 63 as guide members, and are guided by the guide 63.
  • This guide 63 has a V-shape projecting to the most upstream side (inlet 1 side) at the height of the second flow path 6 in the direction of the flow of the cooling air.
  • FIGS. 12A to 12C The state in the duct 60 in each posture of the projection display device 15 will be described with reference to FIGS. 12A to 12C.
  • 12A is a schematic diagram of a cross section of the duct 60 in a floor-mounted installation state
  • FIG. 12B is a schematic diagram of a cross section of the duct 60 in a ceiling-mounted installation state
  • FIG. 12C is a cross-sectional view of the duct 60 in a side-by-side installation state. It is a schematic diagram.
  • the first sphere 61 and the second sphere 62 approach the installation surface 13 and overlap due to their own weight.
  • the inlet of the second flow path 6 is blocked by the first sphere 61
  • the inlet of the third flow path 7 is blocked by the second sphere 62.
  • cooling air is ejected from the first valve outlet 2 and the second sealing part outlet 9.
  • the first sphere 61 and the second sphere 62 approach and overlap the far side from the installation surface 13 due to their own weight.
  • the inlet of the first flow path 6 is closed with the first sphere 61
  • the inlet of the second flow path 6 is closed with the second sphere 62.
  • cooling air is ejected from the third valve outlet 4 and the first sealing part outlet 8.
  • the first sphere 61 and the second sphere 62 move to the side closer to the installation surface 13 and the side farther by the dead weight.
  • the inlet of the first flow path 6 is blocked by the first sphere 61
  • the inlet of the third flow path 7 is blocked by the second sphere 62.
  • cooling air is ejected from the second valve outlet 3 and the first and second sealing part outlets 8 and 9.
  • valve 44 and the sealing portion 45 can be appropriately cooled in each posture of the projection display device 15 as in the above-described embodiment.

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  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The purpose of the present invention is to provide a light source device in which a light-emitting tube can be cooled regardless of whether the longitudinal direction of the light-emitting tube is parallel to the horizontal direction or the vertical direction. The light source device has a housing having an installation surface, a light-emitting tube including a bulb and a sealing part, a reflector, a blower device, and a duct. The duct is provided with a first flow path for jetting a gas toward a first portion of the bulb distant from the installation surface, a second flow path for jetting the gas toward a second portion of the bulb close to the sealing part, a third flow path for jetting the gas toward a third portion of the bulb close to the installation surface, a first opening and a second opening for jetting the gas toward the sealing part, a first closing member for closing an entrance of the first or second flow path in accordance with the orientation of the installation surface with respect to the vertical direction and blocking the gas or directing the gas to the first opening, and a second closing member for closing an entrance of the second or third flow path in accordance with the orientation of the installation surface with respect to the vertical direction and blocking the gas or directing the gas to the second opening.

Description

光源装置及び投写型表示装置Light source device and projection display device
　本発明は、発光管および該発光管を冷却する送風装置を備えた光源装置、及びその光源装置を備えた投写型表示装置に関する。 The present invention relates to a light source device including an arc tube and a blower for cooling the arc tube, and a projection display device including the light source device.
　映像光を投写する投写型表示装置には、超高圧水銀ランプのような発光管を有する光源装置を備えたものがある。発光管は、細長い形状とされ、放電によって発光する一対の電極を収容する、中央部に設けられたバルブと、当該一対の電極の各電極に両端から電力を供給するための導電部材を封止する封止部と、を有する。発光管の封止部はガラスにより形成することができる。封止部には、導電部材とガラスとの接触部分や、導電部材と電極とを接続する溶接部等が形成されている。 Some projection display devices that project image light include a light source device having an arc tube such as an ultra-high pressure mercury lamp. The arc tube has an elongated shape and encloses a bulb provided in the center that houses a pair of electrodes that emit light by discharge, and a conductive member for supplying power to each electrode of the pair of electrodes from both ends. And a sealing portion. The sealing portion of the arc tube can be formed of glass. In the sealing portion, a contact portion between the conductive member and the glass, a welded portion that connects the conductive member and the electrode, and the like are formed.
　放電によりバルブ内に形成された電弧（アーク）は重力と逆方向に凸状の弧を描き、バルブ内の高温気体は浮力により上昇する。そのため、バルブの、鉛直上方となる部分の温度はバルブの、鉛直下方となる部分の温度より高くなる。したがって、バルブが適切な発光状態を維持するためには、バルブの、鉛直上方となる部分の温度を所定の値以下に抑制しつつ、バルブ全体の温度差を小さくすることが必要である。バルブの温度が適切な範囲内に維持されていないと、バルブの白濁や黒化により発光管の寿命が低下したり、明滅（フリッカ）などの発光異常が生じたりすることがある。 The electric arc (arc) formed in the bulb by the discharge draws a convex arc in the direction opposite to gravity, and the hot gas in the bulb rises by buoyancy. For this reason, the temperature of the portion of the valve that is vertically above becomes higher than the temperature of the portion of the valve that is vertically below. Therefore, in order for the bulb to maintain an appropriate light emission state, it is necessary to reduce the temperature difference of the whole bulb while suppressing the temperature of the portion of the bulb that is vertically above to a predetermined value or less. If the temperature of the bulb is not maintained within an appropriate range, the life of the arc tube may be shortened due to cloudiness or blackening of the bulb, or a light emission abnormality such as flicker may occur.
　投写型表示装置は、通常、床のような台に置かれる（以下、「床置き設置」という）。しかし、投射型表示装置は、光源装置が床置き設置の場合とは重力方向に対して逆向きに保持されるように、天井に吊るされることもある（以下、「天吊り設置」という）。床置き設置時におけるバルブの、鉛直方向上方となる部分は、天吊り設置時では、バルブの鉛直方向下方に位置する。一方、床置き設置時におけるバルブの、鉛直方向下方となる部分は、天吊り設置時では、バルブの鉛直方向上方に位置する。つまり、温度が高くなるバルブの鉛直上方となる部分は、床置き設置時と天吊り設置時で異なる。そのため、バルブの発熱しやすい部分が変わる。 Projection type display device is usually placed on a table such as a floor (hereinafter referred to as “floor installation”). However, the projection display device may be hung on the ceiling so that the light source device is held in the direction opposite to the direction of gravity as compared with the case of floor installation (hereinafter referred to as “ceiling installation”). The portion of the valve that is above the vertical direction when installed on the floor is located below the vertical direction of the valve when installed on the ceiling. On the other hand, the portion of the valve that is vertically lower when the floor is installed is positioned above the valve when the ceiling is installed. That is, the part vertically above the bulb where the temperature rises differs between when the floor is installed and when the ceiling is installed. For this reason, the portion of the valve where heat is likely to be generated changes.
　特許文献１は、バルブの上半分を冷却する送風と、バルブの下半分を冷却する送風とを、別々の導風経路を通してバルブに送り込む構成を有する画像供給装置を開示している。特許文献１に記載の画像供給装置では、バルブの上半分とバルブの下半分に均等に冷却風を向かわせる。そのため、床置き設置姿勢及び天吊り設置姿勢のどちらの場合も、発熱しやすいバルブの鉛直上方となる部分の温度が高くなる。例えば、３００Ｗクラスの光源装置で、バルブの上半分と下半分との温度差が１００℃～１５０℃となり、バルブの白濁や黒化により発光管の寿命が低下したり、明滅（フリッカ）などの発光異常が生じたりする原因となっていた。 Patent Document 1 discloses an image supply apparatus having a configuration in which air that cools the upper half of the valve and air that cools the lower half of the valve are sent to the valve through different air guide paths. In the image supply device described in Patent Document 1, the cooling air is directed evenly to the upper half and the lower half of the valve. For this reason, in both the floor-mounted installation posture and the ceiling-mounted installation posture, the temperature of the portion that is vertically above the bulb that easily generates heat increases. For example, in a 300W class light source device, the temperature difference between the upper and lower halves of the bulb is 100 ° C to 150 ° C, and the life of the arc tube is reduced due to white turbidity or blackening of the bulb, or flickering, etc. This could cause abnormal emission of light.
　近年では、投写画像を縦長にするために、投写型表示装置が、床やテーブル等の設置面から９０度の角度を以て置かれる場合がある（以下、「横向き設置」という）。この場合、光源装置における光の出射方向と、投写型表示装置からの画像の投写方向とが９０°の角度をなすように、投写型表示装置の光学部品が配置される。 In recent years, in order to make a projected image vertically long, a projection display device may be placed at an angle of 90 degrees from an installation surface such as a floor or a table (hereinafter referred to as “horizontal installation”). In this case, the optical components of the projection display device are arranged so that the light emission direction in the light source device and the projection direction of the image from the projection display device form an angle of 90 °.
　特許文献２には、それぞれ異なるプロジェクタの３つの姿勢における発光管の冷却方法が示されている。特許文献２に開示される冷却方法では、発光管に対して冷却風が流れる流路が３分割され、これらの流路のうち、天吊り設置、もしくは、床置き設置の場合には、鉛直方向上側の２つの流路を選択し、横向き設置の場合には、３つの流路を選択する風向切替部によって、流路が選択されて冷却風が供給される。 Patent Document 2 discloses a method for cooling an arc tube in three postures of different projectors. In the cooling method disclosed in Patent Document 2, the flow path through which the cooling air flows is divided into three parts with respect to the arc tube. Among these flow paths, in the case of ceiling installation or floor installation, the vertical direction When the two upper flow paths are selected and installed sideways, the flow direction is selected by the wind direction switching unit that selects the three flow paths, and the cooling air is supplied.
特開２００９―３１６０８号公報JP 2009-31608 A 特開２０１１―２５３１５６号公報JP 2011-253156 A
　発光管封止部に形成された導電部材とガラスとの接触部分や、導電部材と電極とを接続する溶接部は、バルブからの光の照射により高温になり、破損することもある。そのため、発光管の端部に位置する封止部を所定の温度以下に維持する必要がある。 The contact portion between the conductive member and the glass formed in the arc tube sealing portion and the welded portion connecting the conductive member and the electrode become hot due to light irradiation from the bulb and may be damaged. Therefore, it is necessary to maintain the sealing part located at the end of the arc tube at a predetermined temperature or lower.
　発光管の置かれる状況について考える。発光管は、その発生した光を効率よく利用するために、バルブにて発生した光を一方向に向けて出射するリフレクタ内に配置されることが一般的である。この場合、リフレクタの焦点位置に発光点となるバルブを配置した時にもっとも反射効率がよくなるため、リフレクタ内にはバルブおよび一方の封止部が位置するように配置されることが多い。しかしながら、このような構成の場合、発光するバルブだけではなく、リフレクタ内に位置する封止部も高温になりやすいため、封止部の冷却を強化しなければならない。 Consider the situation where the arc tube is placed. In order to efficiently use the generated light, the arc tube is generally disposed in a reflector that emits light generated by the bulb in one direction. In this case, since the reflection efficiency is best when a bulb serving as a light emitting point is arranged at the focal position of the reflector, the bulb and one sealing part are often arranged in the reflector. However, in the case of such a configuration, not only the bulb that emits light, but also the sealing portion located in the reflector is likely to become high temperature, so cooling of the sealing portion must be strengthened.
　特許文献２で示されている方法は、バルブの冷却に関しては考慮されているが、封止部の冷却に関しては考慮されていない。そのため、封止部を所定の温度以下に維持し続けることは困難である。 The method disclosed in Patent Document 2 is considered for cooling the valve, but is not considered for cooling the sealing portion. Therefore, it is difficult to keep the sealing portion below a predetermined temperature.
　本発明の目的は、発光管の長手方向が水平方向と鉛直方向のいずれの場合においても適切に発光管を冷却することができる光源装置および投写型表示装置を提供することにある。 An object of the present invention is to provide a light source device and a projection display device capable of appropriately cooling an arc tube regardless of whether the longitudinal direction of the arc tube is a horizontal direction or a vertical direction.
　本発明の光源装置は、設置面を有する筐体と、放電により光を発する１対の電極を収容するバルブと、バルブを挟んで対向して設けられた１対の電極のそれぞれに電力を供給する２つの導電部材および２つの導電部材が封止された２つの封止部を含み、設置面に平行に配置された発光管と、凹面形状の反射面を有し、発光管を、バルブと封止部のうちの一方を反射面で囲むように収容し、一面が開放された空間を形成するリフレクタと、送風装置と、ダクトと、有する。ダクトは、送風装置からの気体が流入する流入口と、流入口からの気体が流入し、バルブの、設置面から遠い第１の部分に向けて気体を噴出する第１の流路と、流入口からの気体が流入し、バルブの、封止部に近い第２の部分に向けて気体を噴出する第２の流路と、流入口からの気体が流入し、バルブの、設置面から近い第３の部分に向けて気体を噴出する第３の流路と、気体を封止部に向けて噴出する第１の開口および第２の開口と、鉛直方向に対する設置面の向きに応じて自重により移動して第１の流路の入口または第２の流路の入口を塞いで、流入口からの気体を遮断、または、第１の開口に向かわせる第１の塞ぎ部材と、鉛直方向に対する設置面の向きに応じて自重により移動して第２の流路の入口または第３の流路の入口を塞いで、流入口からの気体を遮断、または、第２の開口に向かわせる第２の塞ぎ部材と、を備える。 The light source device of the present invention supplies power to a housing having an installation surface, a bulb that houses a pair of electrodes that emit light by discharge, and a pair of electrodes that are provided facing each other across the bulb. Two arcuate tubes including two conductive members and two sealing portions sealed with the two conductive members, the arc tube disposed in parallel to the installation surface, a concave reflecting surface, and the arc tube One of the sealing portions is accommodated so as to be surrounded by a reflecting surface, and has a reflector that forms a space with one surface open, a blower, and a duct. The duct includes an inflow port into which gas from the blower device flows, a first flow path into which gas from the inflow port flows in, and jets gas toward the first portion far from the installation surface of the valve; The gas from the inlet flows in, the second flow path for ejecting the gas toward the second portion of the valve close to the sealing portion, and the gas from the inlet flows in, close to the installation surface of the valve The third flow path that ejects gas toward the third portion, the first opening and the second opening that eject gas toward the sealing portion, and the self-weight according to the orientation of the installation surface with respect to the vertical direction A first blocking member that moves by blocking the inlet of the first flow path or the second flow path to block the gas from the flow inlet or direct to the first opening; and Depending on the orientation of the installation surface, it moves by its own weight and closes the inlet of the second channel or the inlet of the third channel. Shut off gas from the inlet, or comprises a second closing member for directing the second opening, the.
本発明の一実施形態における光源装置を備えた投写型表示装置の外観斜視図である。1 is an external perspective view of a projection display device including a light source device according to an embodiment of the present invention. 投写型表示装置の光学処理を行う光学部品及び光学部品周辺の主要部品を示す斜視図である。It is a perspective view which shows the optical component which performs the optical process of a projection type display apparatus, and the main components around an optical component. 投写型表示装置が床置き設置された状態を示す模式図である。It is a schematic diagram which shows the state by which the projection type display apparatus was installed on the floor. 投写型表示装置が天吊り設置された状態を示す模式図である。It is a schematic diagram which shows the state by which the projection type display apparatus was installed in the ceiling. 投写型表示装置が横向き設置された状態を示す模式図である。It is a schematic diagram which shows the state by which the projection type display apparatus was installed sideways. ランプユニットの詳細図である。It is detail drawing of a lamp unit. 床置き設置状態におけるランプホルダ付近をランプユニットとは反対側からみた斜視図である。It is the perspective view which looked at the lamp holder vicinity in the floor-mounted installation state from the opposite side to the lamp unit. 床置き設置状態におけるランプホルダ付近をランプユニット側から見た斜視図である。It is the perspective view which looked at the lamp holder vicinity in the floor-mounted installation state from the lamp unit side. ダクトの概略斜視図である。It is a schematic perspective view of a duct. 床置き設置時のダクト内の冷却風の流れを示す模式図である。It is a schematic diagram which shows the flow of the cooling air in the duct at the time of floor-standing installation. 床置き設置時のダクトからの冷却風の流れを示す、図８ＡのＡＡ断面の模式図である。It is a schematic diagram of the AA cross section of FIG. 8A which shows the flow of the cooling air from the duct at the time of floor-standing installation. 床置き設置時の第１のバルブ用吹き出し口からの冷却風の流れを示す、図８ＡのＢＢ断面の模式図である。It is a schematic diagram of the BB section of Drawing 8A showing the flow of the cooling air from the blower outlet for the 1st valve at the time of floor-standing installation. 床置き設置時の第２の封止部用吹き出し口からの冷却風の流れを示す、図８ＡのＣＣ断面の模式図である。It is a schematic diagram of CC section of FIG. 8A which shows the flow of the cooling air from the 2nd sealing part blower outlet at the time of floor-standing installation. 天吊り設置時のダクト内の冷却風の流れを示す模式図である。It is a schematic diagram which shows the flow of the cooling air in the duct at the time of ceiling installation. 天吊り設置時のダクトからの冷却風の流れを示す、図９ＡのＤＤ断面の模式図である。FIG. 9B is a schematic diagram of the DD cross section of FIG. 9A showing the flow of cooling air from the duct during ceiling installation. 天吊り設置時の第３のバルブ用吹き出し口からの冷却風の流れを示す、図９ＡのＥＥ断面の模式図である。It is a schematic diagram of the EE section of Drawing 9A showing the flow of the cooling wind from the blower outlet for the 3rd valve at the time of ceiling installation. 天吊り設置時の第１の封止部用吹き出し口からの冷却風の流れを示す、図９ＡのＦＦ断面の模式図である。It is a schematic diagram of the FF section of Drawing 9A showing the flow of the cooling wind from the blower outlet for the 1st sealing part at the time of ceiling installation. 横向き設置時のダクト内の冷却風の流れを示す模式図である。It is a schematic diagram which shows the flow of the cooling air in the duct at the time of horizontal installation. 横向き設置時のダクトからの冷却風の流れを示す、図１０ＡのＧＧ断面の模式図である。It is a schematic diagram of the GG cross section of FIG. 10A which shows the flow of the cooling air from the duct at the time of horizontal installation. 横向き設置時の第２のバルブ用吹き出し口からの冷却風の流れを示す、図１０ＡのＨＨ断面の模式図である。It is a schematic diagram of the HH section of Drawing 10A showing the flow of the cooling wind from the 2nd valve outlet at the time of sideways installation. 横向き設置時の第１および第２の封止部用吹き出し口からの冷却風の流れを示す、図１０ＡのＩＩ断面の模式図である。FIG. 10B is a schematic diagram of the II cross section of FIG. 10A, showing the flow of cooling air from the first and second sealing portion outlets when installed sideways. ダクトの内部構造を示す、ダクトの概略斜視図である。It is a schematic perspective view of a duct which shows the internal structure of a duct. 床置き設置状態における、ダクトの断面の模式図である。It is a schematic diagram of the cross section of a duct in a floor-standing installation state. 天吊り設置状態における、ダクトの断面の模式図である。It is a schematic diagram of the cross section of a duct in a ceiling-suspended installation state. 横向き設置状態における、ダクトの断面の模式図である。It is a schematic diagram of the cross section of a duct in a horizontal installation state.
　次に、本発明の実施形態について、図面を参照して説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
　図１は本発明の一実施形態おける光源装置を備えた投写型表示装置の外観斜視図である。投写型表示装置１５は、各部品を収容する筐体１２と、画像を形成する光をスクリーン等に投写する投写レンズ１４と、を備えている。なお、床置き設置状態時に、投写型表示装置が被設置面に設置されたときに、被設置面と対向する筐体の面を設置面１３とする。 FIG. 1 is an external perspective view of a projection display device including a light source device according to an embodiment of the present invention. The projection display device 15 includes a housing 12 that houses each component, and a projection lens 14 that projects light that forms an image onto a screen or the like. When the projection display apparatus is installed on the installation surface in the floor-mounted installation state, the surface of the housing that faces the installation surface is set as the installation surface 13.
　図２は、投写型表示装置１５の光学処理を行う光学部品及び光学部品周辺の主要部品を示している。これらの部品は、筐体１２内に収容されている。投写型表示装置１５は、光源装置２０及び光学エンジン１６を備えている。 FIG. 2 shows an optical component that performs optical processing of the projection display device 15 and main components around the optical component. These components are accommodated in the housing 12. The projection display device 15 includes a light source device 20 and an optical engine 16.
　光源装置２０のランプユニット（不図示、図４参照）から出射した光は、光学エンジン１６の内部の光学部品によって光学処理された後に、投写レンズ１４を通ってスクリーン等に投写される。本実施形態では、光源装置２０から出射した光は、光学エンジン１６で９０度曲げられる。つまり、光源装置２０における光の出射方向と、投写型表示装置からの画像の投写方向（投影光の方向）とが９０°の角度をなすようなっている。また、ランプユニットは、送風装置１８で発生し、通路１９と、ダクト（不図示、図５参照）またはリフレクタ裏側冷却風流路３１を介して流れてくる風によって冷却される。 The light emitted from the lamp unit (not shown, see FIG. 4) of the light source device 20 is optically processed by optical components inside the optical engine 16 and then projected onto a screen or the like through the projection lens 14. In the present embodiment, the light emitted from the light source device 20 is bent 90 degrees by the optical engine 16. That is, the light emitting direction of the light source device 20 and the image projection direction (projection light direction) from the projection display device form an angle of 90 °. Further, the lamp unit is cooled by wind that is generated in the blower 18 and flows through the passage 19 and the duct (not shown, see FIG. 5) or the reflector back side cooling air flow path 31.
　図３Ａ～図３Ｃは、投写型表示装置１５の設置姿勢の例を示している。 3A to 3C show examples of installation postures of the projection display device 15. FIG.
　図３Ａは、投写型表示装置１５が床置き設置された状態を示している。本例では、床置き設置姿勢において、投写レンズ１４は概ね水平面に沿った方向に横長の光Ｌを投写する。 FIG. 3A shows a state where the projection display device 15 is installed on the floor. In this example, in the floor-mounted installation posture, the projection lens 14 projects the horizontally long light L in a direction substantially along the horizontal plane.
　図３Ｂは、投写型表示装置が天吊り設置された状態を示している。本例では、天吊り設置姿勢において、投写レンズ１４は概ね水平面に沿った方向に横長の光Ｌを投写する。 FIG. 3B shows a state in which the projection display device is suspended from a ceiling. In this example, the projection lens 14 projects the horizontally long light L in a direction substantially along the horizontal plane in the ceiling-mounted installation posture.
　図３Ｃは、投写型表示装置が横向き設置された状態を示している。本例では、投射型表示装置１５は、投写レンズ１４が概ね水平面に沿った縦長の光Ｌを投写するように向けられている。この場合、発光管４８（図４参照）は、鉛直上方を向いている。 FIG. 3C shows a state in which the projection display device is installed sideways. In this example, the projection display device 15 is directed so that the projection lens 14 projects the vertically long light L substantially along a horizontal plane. In this case, the arc tube 48 (see FIG. 4) faces vertically upward.
　図４は、ランプユニット４０の詳細図である。本実施例のランプは超高圧水銀ランプであり、リフレクタベース５２を介してリフレクタ５０に保持される発光管４８は、放電により光を発する一対の電極と、一対の電極を収容し、放電により発光する略球状のバルブ４４と、バルブ４４から互いに反対方向に延び、バルブ４４内の一対の電極に電力を供給する導電部材を収容する封止部４５，４６と、から構成されている。この導電部材は、例えば箔状の金属から形成される。封止部４５，４６は、この導電部材を気密に封止している。封止部４５，４６は、ガラスにより形成することができる。リフレクタベース５２による発光管４８の保持は無機材料を主成分とした接着剤により固着されている。一方の封止部４５は、バルブ４４から、リフレクタ５０によって形成された空間の開放された一面に向かう方へ延びていて良い。他方の封止部４６は、バルブ４４から、リフレクタ５０の底部を貫通してリフレクタ５０の後方へ延びていて良い。また、バルブ４４と一方の封止部４５は、リフレクタ５０に囲まれて配置されているため、他方の封止部４６に比べて一方の封止部４５は高温になりやすく、一方の封止部４５は、他方の封止部４６に比べると冷却をする必要がある。 FIG. 4 is a detailed view of the lamp unit 40. The lamp of the present embodiment is an ultra-high pressure mercury lamp, and the arc tube 48 held by the reflector 50 through the reflector base 52 contains a pair of electrodes that emit light by discharge and a pair of electrodes, and emits light by discharge. The substantially spherical valve 44 and sealing portions 45 and 46 that extend in the opposite directions from the valve 44 and accommodate a conductive member that supplies power to the pair of electrodes in the valve 44 are configured. This conductive member is made of, for example, a foil-like metal. The sealing portions 45 and 46 hermetically seal the conductive member. The sealing parts 45 and 46 can be formed of glass. The arc tube 48 is held by the reflector base 52 by an adhesive mainly composed of an inorganic material. One sealing portion 45 may extend from the valve 44 toward the open surface of the space formed by the reflector 50. The other sealing portion 46 may extend from the bulb 44 through the bottom of the reflector 50 to the rear of the reflector 50. Further, since the valve 44 and the one sealing portion 45 are disposed so as to be surrounded by the reflector 50, one sealing portion 45 is likely to be hotter than the other sealing portion 46. The part 45 needs to be cooled as compared with the other sealing part 46.
　リフレクタ５０は、凹面形状の反射面を有しており、発光管４８を収容する空間を形成している。当該空間は一面で開放されている。発光管４８からの光は、直接またはリフレクタ５０で反射されて、当該空間の開放された一面から当該空間の外部に出射し、光学エンジン１６へ入射する。バルブ４４は、リフレクタ５０の底部近傍に配置されていることが好ましい。 The reflector 50 has a concave reflecting surface and forms a space for accommodating the arc tube 48. The space is open on one side. The light from the arc tube 48 is reflected directly or by the reflector 50, exits from the open surface of the space, and enters the optical engine 16. The valve 44 is preferably disposed near the bottom of the reflector 50.
　バルブ４４の放電による発光基点は重力の方向とは反対側に凸状の弧を描くことと、バルブ４４内の高温気体が重力に対して上側（鉛直上方）に移動することにより、バルブ４４の温度は鉛直下方よりも鉛直上方の方が高くなる。バルブ温度が所定温度範囲より高くなると白濁を生じるため寿命が短くなる。逆に所定温度範囲より低くなると、輝度低下やフリッカが生じたり、黒化を原因として寿命が短縮したりする。また、ガラス管と導電部材の気密封止部の温度が適温よりも高くなると、導電部材の酸化が促進し、破裂や不点灯が発生する。 The light emission base point of the discharge of the bulb 44 draws a convex arc on the opposite side of the direction of gravity, and the hot gas in the bulb 44 moves upward (vertically upward) with respect to the gravity. The temperature is higher in the vertical direction than in the vertical direction. When the bulb temperature is higher than the predetermined temperature range, white turbidity occurs and the life is shortened. On the other hand, when the temperature is lower than the predetermined temperature range, the luminance is reduced or flicker occurs, or the lifetime is shortened due to blackening. Further, when the temperature of the hermetic sealing portion between the glass tube and the conductive member becomes higher than the appropriate temperature, oxidation of the conductive member is promoted, and rupture or non-lighting occurs.
　また、導電部材を封止する一方の封止部４５の温度は、バルブ４４からの光の照射により高くなる。封止部４５の温度が所定の値よりも高くなると、導電部材の酸化が促進され、発光管４８が破裂したりバルブ４４が点灯しなかったりすることがある。したがって、バルブ４４全体の温度を所定の範囲内に維持するとともに、封止部４５の温度を所定の値以下に維持することが望まれる。 In addition, the temperature of one sealing portion 45 that seals the conductive member is increased by light irradiation from the bulb 44. When the temperature of the sealing part 45 becomes higher than a predetermined value, oxidation of the conductive member is promoted, and the arc tube 48 may rupture or the bulb 44 may not light up. Therefore, it is desirable to maintain the temperature of the entire valve 44 within a predetermined range and to maintain the temperature of the sealing portion 45 at a predetermined value or less.
　図５は、床置き設置状態におけるランプホルダ４２付近をランプユニット４２とは反対側からみた斜視図である。図６は、床置き設置状態におけるランプホルダ４２付近をランプユニット４０側から見た斜視図である。図７は、ダクト３０の概略斜視図である。なお、図６では、ランプユニット４０を省略している。 FIG. 5 is a perspective view of the vicinity of the lamp holder 42 in a floor-mounted state as viewed from the side opposite to the lamp unit 42. FIG. 6 is a perspective view of the vicinity of the lamp holder 42 when viewed from the lamp unit 40 in the floor-mounted state. FIG. 7 is a schematic perspective view of the duct 30. In FIG. 6, the lamp unit 40 is omitted.
　ランプユニット４０を保持するランプホルダ４２に隣接して、バルブ４４と封止部４５を冷却する冷却風が通過するためのダクト３０が設けられている。ダクト３０には、流入口１と、流入口１と第１のバルブ用吹き出し口２とに連通する第１の流路５と、流入口１と第２のバルブ用吹き出し口３とに連通する第２の流路６と、流入口１と第３のバルブ用吹き出し口４とに連通する第３の流路７と、開口である第１の封止部用吹き出し口８および第２の封止部用吹き出し口９と、塞ぎ部材として、第１封止板１０および第２封止板１１と、が設けられている。 Adjacent to the lamp holder 42 that holds the lamp unit 40, a duct 30 is provided through which cooling air for cooling the bulb 44 and the sealing portion 45 passes. The duct 30 communicates with the inlet 1, the first flow path 5 communicating with the inlet 1 and the first valve outlet 2, and the inlet 1 and the second valve outlet 3. The second flow path 6, the third flow path 7 communicating with the inlet 1 and the third valve outlet 4, the first sealing portion outlet 8 and the second seal that are openings. A stopper outlet 9 and a first sealing plate 10 and a second sealing plate 11 are provided as closing members.
　送風装置１８からの冷却風が流入口１からダクト３０内に流入する。床置き設置状態において、第１の流路５が最も上部（設置面１３から遠い側）に配置され、第１の流路から下方に向かって第２の流路６と第３の流路７とが順に配置されている。なお、第１～第３のバルブ用吹き出し口２、３、４は互いに等間隔に配置されている。 Cooling air from the blower 18 flows into the duct 30 from the inlet 1. In the floor-mounted installation state, the first flow path 5 is disposed at the uppermost part (the side far from the installation surface 13), and the second flow path 6 and the third flow path 7 are directed downward from the first flow path. And are arranged in order. The first to third valve outlets 2, 3, 4 are arranged at equal intervals.
　第１のバルブ用吹き出し口２からの冷却風は、バルブ４４の、設置面１３から遠い部分（第１の部分）を冷却し、第２のバルブ用吹き出し口３からの冷却風は、バルブ４４の、封止部４５に近い部分（第２の部分）を冷却し、第３のバルブ用吹き出し口４からの冷却風は、バルブ４４の、設置面１３に近い部分（第３の部分）を冷却する。 The cooling air from the first valve outlet 2 cools the portion of the valve 44 far from the installation surface 13 (first portion), and the cooling air from the second valve outlet 3 The portion close to the sealing portion 45 (second portion) is cooled, and the cooling air from the third valve outlet 4 causes the portion close to the installation surface 13 of the valve 44 (third portion). Cooling.
　なお、第１～第３のバルブ用吹き出し口２～４は、ダクト３０の側面に設けられている。そのため、第１～第３の流路５～７は、各流路５～７の入口と、出口である第１～第３のバルブ用吹き出し口２～４とでは向きが異なる。したがって、各流路５～７は湾曲している。第２の流路６を通過する冷却風は、バルブ４４の、封止部４５に近い部分（第２の部分）を冷却する必要があるため、第２の流路６の曲率は、第１の流路５および第３の流路７の曲率に比べて大きい。第１の流路５および第３の流路７の曲率は同じである。 The first to third valve outlets 2 to 4 are provided on the side surface of the duct 30. Therefore, the directions of the first to third channels 5 to 7 are different between the inlets of the channels 5 to 7 and the first to third valve outlets 2 to 4 that are outlets. Accordingly, each flow path 5-7 is curved. Since the cooling air passing through the second flow path 6 needs to cool a portion (second portion) of the valve 44 close to the sealing portion 45, the curvature of the second flow path 6 is the first This is larger than the curvature of the flow path 5 and the third flow path 7. The curvatures of the first flow path 5 and the third flow path 7 are the same.
　冷却風の流れる方向において、第１のバルブ用吹き出し口２の上流に第１の封止部用吹き出し口８が設けられ、第３のバルブ用吹き出し口４の上流に第２の封止部用吹き出し口９が設けられている。第１の封止部用吹き出し口８および第２の封止部用吹き出し口９からの冷却風で、封止部４５が冷却される。 A first sealing portion outlet 8 is provided upstream of the first valve outlet 2 in the direction in which the cooling air flows, and the second sealing portion outlet is upstream of the third valve outlet 4. A blowout port 9 is provided. The sealing portion 45 is cooled by the cooling air from the first sealing portion outlet 8 and the second sealing portion outlet 9.
　なお、第１の封止部用吹き出し口８および第２の封止部用吹き出し口９は、第１～第３のバルブ用吹き出し口２、３、４より小さくなっている。 The first sealing portion outlet 8 and the second sealing portion outlet 9 are smaller than the first to third valve outlets 2, 3, 4.
　封止板１０、１１は、直線状に延びた平板部２３と、平板部２３につながり、平板部２３に対して角度を有する屈折部２４と、を有している（図７参照）。 The sealing plates 10 and 11 have a flat plate portion 23 extending linearly and a refracting portion 24 connected to the flat plate portion 23 and having an angle with respect to the flat plate portion 23 (see FIG. 7).
　ダクト３０は、第１の流路５と第２の流路６の間でありかつ冷却風の流れの向きで第１の封止部用吹き出し口８よりも上流に位置する第１の回動軸２１と、第２の流路６と第３の流路７の間でありかつ冷却風の流れの向きで第２の封止部用吹き出し口９よりも上流に位置する第２の回動軸２２と、を有する。 The duct 30 is a first rotation located between the first flow path 5 and the second flow path 6 and upstream of the first sealing portion outlet 8 in the direction of the flow of the cooling air. A second rotation located between the shaft 21 and the second flow path 6 and the third flow path 7 and upstream of the second sealing portion outlet 9 in the direction of the flow of the cooling air And a shaft 22.
　第１の封止板１０は、冷却風の流れの向きで第１の回動軸２１よりも下流側に屈折部２４が位置し、屈折部２４の先端が設置面１３とは反対の方向を向くように、平板部２３の、屈折部２４とは反対の端部が第１の回動軸２１に回動可能の支持されている。 In the first sealing plate 10, the refracting portion 24 is positioned downstream of the first rotation shaft 21 in the direction of the flow of the cooling air, and the tip of the refracting portion 24 has a direction opposite to the installation surface 13. The end portion of the flat plate portion 23 opposite to the refracting portion 24 is rotatably supported by the first rotation shaft 21 so as to face.
　第２の封止板１１は、冷却風の流れの向きで第２の回動軸２２よりも下流側に屈折部２４が位置し、屈折部２４の先端が設置面１３の方向を向くように、平板部２３の、屈折部２４とは反対の端部が第２の回動軸２２に支持されている。 In the second sealing plate 11, the refracting portion 24 is positioned downstream of the second rotating shaft 22 in the direction of the flow of the cooling air, and the tip of the refracting portion 24 faces the installation surface 13. The end portion of the flat plate portion 23 opposite to the refracting portion 24 is supported by the second rotating shaft 22.
　このような構成により、第１の封止板１０と第２の封止板１１は自重により回転が可能である。 With this configuration, the first sealing plate 10 and the second sealing plate 11 can be rotated by their own weight.
　送風装置１８からダクト３０に供給される冷却風は、流入口１に流入し、各吹き出し口２～４、８、９のいずれかを通過し、主にバルブ４４と封止部４５を冷却した後、冷却風出口３２から光源装置外部に排気される。 Cooling air supplied from the blower 18 to the duct 30 flows into the inlet 1 and passes through any of the outlets 2 to 4, 8, 9, and mainly cools the valve 44 and the sealing portion 45. Thereafter, the air is exhausted from the cooling air outlet 32 to the outside of the light source device.
　ダクト３０に隣接して、冷却風をリフレクタ５０の裏側に導くリフレクタ裏側冷却風流路３１が備えられている。 Adjacent to the duct 30, there is provided a reflector back side cooling air flow path 31 that guides the cooling air to the back side of the reflector 50.
　次に、投写型表示装置１５が床置き設置、天吊り設置、横向き設置の各状態における冷却風の流れを説明する。 Next, the flow of cooling air when the projection display device 15 is placed on the floor, installed on the ceiling, or installed sideways will be described.
　まず、床置き設置時について、図８Ａ～図８Ｄを用いて説明する。図８Ａは床置き設置時のダクト内の冷却風の流れを示す模式図である。図８Ｂは、床置き設置時のダクトからの冷却風の流れを示す、図８Ａの断面の模式図である。図８Ｃは、床置き設置時の第１のバルブ用吹き出し口からの冷却風の流れを示す、図８ＡのＢＢ断面の模式図である。図８Ｄは、床置き設置時の第２の封止部用吹き出し口からの冷却風の流れを示す、図８ＡのＣＣ断面の模式図である。なお、図中の矢印は、冷却風（気体）の流れを示している。 First, the floor installation will be described with reference to FIGS. 8A to 8D. FIG. 8A is a schematic diagram showing the flow of cooling air in the duct when installed on the floor. FIG. 8B is a schematic view of the cross section of FIG. 8A showing the flow of cooling air from the duct when installed on the floor. FIG. 8C is a schematic diagram of the BB cross section of FIG. 8A showing the flow of cooling air from the first valve outlet when the floor is installed. FIG. 8D is a schematic diagram of the CC cross section of FIG. 8A showing the flow of cooling air from the second sealing part outlet when the floor is placed. In addition, the arrow in a figure has shown the flow of the cooling air (gas).
　床置き設置においては、自重により回転した第１の封止板１０と第２の封止板１１とによって、第２の流路６の入口と第３の流路の入口がそれぞれ塞がれる。送風装置１８からの冷却風は、ダクト３０の流入口１に流入する。ダクト３０に流入した冷却風は、第１の流路５のみを通過し、第１のバルブ用吹き出し口２から噴出し、主にバルブ４４の第１の部分を冷却する。 In floor-standing installation, the first sealing plate 10 and the second sealing plate 11 rotated by their own weight respectively block the inlet of the second flow path 6 and the inlet of the third flow path. Cooling air from the blower 18 flows into the inlet 1 of the duct 30. The cooling air that has flowed into the duct 30 passes only through the first flow path 5, is ejected from the first valve outlet 2, and mainly cools the first portion of the valve 44.
　流入口１と第１の流路５の間に第１の封止部用吹き出し口８が存在するが、冷却風の慣性により冷却風の大部分は第１の封止部用吹き出し８を通過し、冷却風は第１のバルブ用吹き出し口２から噴出する。 Although the first sealing portion outlet 8 exists between the inflow port 1 and the first flow path 5, most of the cooling air passes through the first sealing portion outlet 8 due to the inertia of the cooling air. Then, the cooling air is ejected from the first valve outlet 2.
　また、流入口１から流入した冷却風は、第１および第２の封止板１０、１１によって遮断され、第２および第３の流路６、７には流入しない。そして、第２の封止板１１に遮断された冷却風は、流れの向きを変えられ、第２の封止部用吹き出し口９から噴出し、主に封止部４５を冷却する。 Further, the cooling air flowing in from the inflow port 1 is blocked by the first and second sealing plates 10 and 11 and does not flow into the second and third flow paths 6 and 7. Then, the cooling air blocked by the second sealing plate 11 is changed in flow direction, and is ejected from the second sealing portion outlet 9 to mainly cool the sealing portion 45.
　床置き設置状態においては、バルブ４４の鉛直上方に位置する第１の部分に向かって冷却風を噴出できる第１のバルブ用吹き出し口２から冷却風を噴出でき、封止部４５に向かって冷却風を噴出できる第２の封止部用吹き出し口９からも冷却風を噴出することができる。 In the floor-installed state, the cooling air can be ejected from the first valve outlet 2 that can eject the cooling air toward the first portion located vertically above the valve 44 and cooled toward the sealing portion 45. Cooling air can also be ejected from the second sealing portion outlet 9 from which air can be ejected.
　次に、天吊り設置時について、図９Ａ～図９Ｄを用いて説明する。図９Ａは天吊り設置時のダクト内の冷却風の流れを示す模式図である。図９Ｂは、天吊り設置時のダクトからの冷却風の流れを示す、図９ＡのＤＤ断面の模式図である。図９Ｃは、天吊り設置時の第３のバルブ用吹き出し口からの冷却風の流れを示す、図９ＡのＥＥ断面の模式図である。図９Ｄは、天吊り設置時の第１の封止部用吹き出し口からの冷却風の流れを示す、図９ＡのＦＦ断面の模式図である。なお、図中の矢印は、冷却風（気体）の流れを示している。 Next, the ceiling installation will be described with reference to FIGS. 9A to 9D. FIG. 9A is a schematic diagram showing the flow of cooling air in the duct when installed on the ceiling. FIG. 9B is a schematic diagram of the DD cross section of FIG. 9A showing the flow of cooling air from the duct during ceiling installation. FIG. 9C is a schematic diagram of the EE cross section of FIG. 9A showing the flow of the cooling air from the third valve outlet during ceiling installation. FIG. 9D is a schematic view of the FF cross section of FIG. 9A showing the flow of the cooling air from the first sealing portion outlet when the ceiling is installed. In addition, the arrow in a figure has shown the flow of the cooling air (gas).
　天吊り設置においては、自重により回転した第１の封止板１０と第２の封止板１１とによって、第１の流路５の入口と第２の流路６の入口がそれぞれ塞がれる。送風装置１８からの冷却風は、ダクト３０の流入口１に流入する。ダクト３０に流入した冷却風は、第３の流路７のみを通過し、第３のバルブ用吹き出し口４から噴出し、主にバルブ４４の第３の部分を冷却する。 In the ceiling-mounted installation, the first sealing plate 10 and the second sealing plate 11 rotated by their own weights block the inlet of the first channel 5 and the inlet of the second channel 6, respectively. . Cooling air from the blower 18 flows into the inlet 1 of the duct 30. The cooling air that has flowed into the duct 30 passes only through the third flow path 7 and is ejected from the third valve outlet 4 to mainly cool the third portion of the valve 44.
　流入口１と第３の流路７の間に第２の封止部用吹き出し口９が存在するが、冷却風の慣性により冷却風の大部分は第２の封止部用吹き出し９を通過し、冷却風は第３のバルブ用吹き出し口４から噴出する。 Although the second sealing portion outlet 9 exists between the inlet 1 and the third flow path 7, most of the cooling air passes through the second sealing portion outlet 9 due to the inertia of the cooling air. The cooling air is then ejected from the third valve outlet 4.
　また、流入口１から流入した冷却風は、第１および第２の封止板１０、１１によって遮断され、第１および第２の流路５、６には流入しない。そして、第１の封止板１０に遮断された冷却風は、流れの向きを変えられ、第１の封止部用吹き出し口８から噴出し、主に封止部４５を冷却する。 Further, the cooling air flowing in from the inflow port 1 is blocked by the first and second sealing plates 10 and 11 and does not flow into the first and second flow paths 5 and 6. Then, the cooling air blocked by the first sealing plate 10 is changed in flow direction, and is ejected from the first sealing portion outlet 8 to mainly cool the sealing portion 45.
　天吊り設置状態においては、バルブ４４の鉛直上方に位置する第３の部分に向かって冷却風を噴出できる第３のバルブ用吹き出し口４から冷却風を噴出でき、封止部４５に向かって冷却風を噴出できる第１の封止部用吹き出し口８からも冷却風を噴出することができる。 In the ceiling-mounted state, the cooling air can be ejected from the third valve outlet 4 that can eject the cooling air toward the third portion positioned vertically above the valve 44 and cooled toward the sealing portion 45. Cooling air can also be ejected from the first sealing portion outlet 8 from which air can be ejected.
　次に、横向き設置時について、図１０Ａ～図１０Ｄを用いて説明する。図１０Ａは天吊り設置時のダクト内の冷却風の流れを示す模式図である。図１０Ｂは、天吊り設置時のダクトからの冷却風の流れを示す、図１０ＡのＧＧ断面の模式図である。図１０Ｃは、天吊り設置時の第３のバルブ用吹き出し口からの冷却風の流れを示す、図１０ＡのＨＨ断面の模式図である。図１０Ｄは、天吊り設置時の第１の封止部用吹き出し口からの冷却風の流れを示す、図１０ＡのＩＩ断面の模式図である。なお、図中の矢印は、冷却風（気体）の流れを示している。 Next, the horizontal installation will be described with reference to FIGS. 10A to 10D. FIG. 10A is a schematic diagram showing the flow of cooling air in the duct when installed on the ceiling. FIG. 10B is a schematic diagram of the GG cross section of FIG. 10A showing the flow of cooling air from the duct during ceiling installation. FIG. 10C is a schematic view of the HH cross section of FIG. 10A showing the flow of cooling air from the third valve outlet when the ceiling is installed. FIG. 10D is a schematic diagram of the II cross section of FIG. 10A showing the flow of the cooling air from the first sealing portion outlet when the ceiling is installed. In addition, the arrow in a figure has shown the flow of the cooling air (gas).
　横置き設置においては、自重により回転した第１の封止板１０と第２の封止板１１とによって、第１の流路５の入口と第３の流路７の入口がそれぞれ塞がれる。送風装置１８からの冷却風は、ダクト３０の流入口１に流入する。ダクト３０に流入した冷却風は、第２の流路６のみを通過し、第２のバルブ用吹き出し口３から噴出し、主にバルブ４４の第２の部分を冷却する。 In the horizontal installation, the inlet of the first channel 5 and the inlet of the third channel 7 are respectively closed by the first sealing plate 10 and the second sealing plate 11 rotated by their own weight. . Cooling air from the blower 18 flows into the inlet 1 of the duct 30. The cooling air that has flowed into the duct 30 passes only through the second flow path 6 and is ejected from the second valve outlet 3 to mainly cool the second portion of the valve 44.
　また、流入口１から流入した冷却風は、第１および第２の封止板１０、１１によって遮断され、第１および第３の流路５、７には流入しない。そして、第１の封止板１０に遮断された冷却風は、流れの向きを変えられ、第１の封止部用吹き出し口８から噴出し、主に封止部４５を冷却する。さらに、第２の封止板１１に遮断された冷却風は、流れの向きを変えられ、第２の封止部用吹き出し口９から噴出し、主に封止部４５を冷却する。 Further, the cooling air flowing from the inlet 1 is blocked by the first and second sealing plates 10 and 11 and does not flow into the first and third flow paths 5 and 7. Then, the cooling air blocked by the first sealing plate 10 is changed in flow direction, and is ejected from the first sealing portion outlet 8 to mainly cool the sealing portion 45. Further, the cooling air blocked by the second sealing plate 11 is changed in the flow direction, and is ejected from the second sealing portion outlet 9 to mainly cool the sealing portion 45.
　横向き設置状態においては、バルブ４４の、鉛直上方に位置する第２の部分に向かって冷却風を噴出できる第２のバルブ用吹き出し口３から冷却風を噴出できる。 In the horizontally installed state, the cooling air can be ejected from the second valve outlet 3 from which the cooling air can be ejected toward the second portion of the valve 44 positioned vertically above.
　また、横向き設置状態では、封止部４５の先端が鉛直上方を向いているため、床置き設置状態や天吊り設置状態に比べて封止部４５が高温になる。しかしながら、横置き設置状態において、床置き設置状態と天吊り設置状態と異なり、第１の封止部用吹き出し口８と第２の封止部用吹き出し口９の２か所から冷却風を封止部４５に噴出することができる。そのため、封止部４５の温度上昇を抑制することができる。 Also, in the sideways installation state, since the tip of the sealing unit 45 is directed vertically upward, the sealing unit 45 is hotter than the floor-standing installation state or the ceiling suspension installation state. However, in the horizontal installation state, unlike the floor installation state and the ceiling suspension installation state, the cooling air is sealed from two locations, the first sealing portion outlet 8 and the second sealing portion outlet 9. It can be ejected to the stop 45. Therefore, the temperature rise of the sealing part 45 can be suppressed.
　以上で説明したように、本発明では、発光管が水平方向と平行な姿勢のみならず、鉛直方向と平行になる姿勢を含んだ、各設置状態において、バルブ４４の、鉛直上方となる部分を冷却することができる。さらに、各設置状態において封止部４５を冷却することができるが、横向き設置状態においては、特に高温になりやすい封止部４５を効果的に冷却することができる。 As described above, in the present invention, the portion of the bulb 44 that is vertically above in each installation state includes not only the posture in which the arc tube is parallel to the horizontal direction but also the posture in parallel to the vertical direction. Can be cooled. Furthermore, although the sealing part 45 can be cooled in each installation state, in the sideways installation state, the sealing part 45 that is particularly likely to reach a high temperature can be effectively cooled.
　次に、ダクト３０の他の実施形態を説明する。図１１は、ダクト６０の内部構造を示す、ダクトの概略斜視図である。図１１では、内部構造をわかりやすくするために、ダクト６０の壁面の一部を省略している。なお、上述の実施形態と同様の構成については説明を省略する。 Next, another embodiment of the duct 30 will be described. FIG. 11 is a schematic perspective view of the duct showing the internal structure of the duct 60. In FIG. 11, a part of the wall surface of the duct 60 is omitted for easy understanding of the internal structure. Note that a description of the same configuration as that of the above-described embodiment is omitted.
　冷却風の流れる向きにおいて、ダクト６０の、各流路５～７と第１、第２の封止部用吹き出し口８、９の間であり、ダクト６０の側面にそれぞれガイド６３が設けられている。 In the direction in which the cooling air flows, the guides 63 are provided on the side surfaces of the duct 60 between the flow paths 5 to 7 of the duct 60 and the first and second sealing portion outlets 8 and 9, respectively. Yes.
　このガイド６３同士の間に、塞ぎ部材として、第１の球６１（設置面１３より遠い側）と第２の球６２（設置面１３に近い側）とが挟まれ、ガイド６３に案内される。このガイド６３は、冷却風の流れの向きにおいて、第２の流路６の高さの位置で最も上流側（流入口１側）に突出するＶ字形状をしている。 A first sphere 61 (a side farther from the installation surface 13) and a second sphere 62 (a side closer to the installation surface 13) are sandwiched between the guides 63 as guide members, and are guided by the guide 63. . This guide 63 has a V-shape projecting to the most upstream side (inlet 1 side) at the height of the second flow path 6 in the direction of the flow of the cooling air.
　投写型表示装置１５の各姿勢における、ダクト６０内の様子を、図１２Ａ～図１２Ｃを用いて説明する。図１２Ａは、床置き設置状態における、ダクト６０の断面の模式図、図１２Ｂは、天吊り設置状態における、ダクト６０の断面の模式図、図１２Ｃは、横向き設置状態における、ダクト６０の断面の模式図である。 The state in the duct 60 in each posture of the projection display device 15 will be described with reference to FIGS. 12A to 12C. 12A is a schematic diagram of a cross section of the duct 60 in a floor-mounted installation state, FIG. 12B is a schematic diagram of a cross section of the duct 60 in a ceiling-mounted installation state, and FIG. 12C is a cross-sectional view of the duct 60 in a side-by-side installation state. It is a schematic diagram.
　床置き設置状態では、第１の球６１と第２の球６２とは、自重により、設置面１３に近づいて重なる。そして、上述の実施形態と同様に、第１の球６１で第２の流路６の入口を塞ぎ、第２の球６２で第３の流路７の入口が塞がれる。その結果、第１のバルブ用吹き出し口２と、第２の封止部用吹き出し口９とから冷却風が噴出する。 In the floor-mounted installation state, the first sphere 61 and the second sphere 62 approach the installation surface 13 and overlap due to their own weight. As in the above-described embodiment, the inlet of the second flow path 6 is blocked by the first sphere 61, and the inlet of the third flow path 7 is blocked by the second sphere 62. As a result, cooling air is ejected from the first valve outlet 2 and the second sealing part outlet 9.
　天吊り設置状態では、第１の球６１と第２の球６２とは、自重により、設置面１３とは遠い側に近づいて重なる。そして、上述の実施形態と同様に、第１の球６１で第１の流路６の入口を塞ぎ、第２の球６２で第２の流路６の入口が塞がれる。その結果、第３のバルブ用吹き出し口４と、第１の封止部用吹き出し口８とから冷却風が噴出する。 In the ceiling-mounted state, the first sphere 61 and the second sphere 62 approach and overlap the far side from the installation surface 13 due to their own weight. In the same manner as in the above-described embodiment, the inlet of the first flow path 6 is closed with the first sphere 61, and the inlet of the second flow path 6 is closed with the second sphere 62. As a result, cooling air is ejected from the third valve outlet 4 and the first sealing part outlet 8.
　横向き設置状態では、第１の球６１と第２の球６２とは、自重により、設置面１３に近い側と遠い側とに移動する。そして、上述の実施形態と同様に、第１の球６１で第１の流路６の入口を塞ぎ、第２の球６２で第３の流路７の入口が塞がれる。その結果、第２のバルブ用吹き出し口３と、第１および第２の封止部用吹き出し口８、９とから冷却風が噴出する。 In the horizontally installed state, the first sphere 61 and the second sphere 62 move to the side closer to the installation surface 13 and the side farther by the dead weight. As in the above-described embodiment, the inlet of the first flow path 6 is blocked by the first sphere 61, and the inlet of the third flow path 7 is blocked by the second sphere 62. As a result, cooling air is ejected from the second valve outlet 3 and the first and second sealing part outlets 8 and 9.
　したがって、本実施形態においても、投写型表示装置１５の各姿勢においても上述の実施形態と同様に、バルブ４４および封止部４５を適切に冷却することができる。 Therefore, also in the present embodiment, the valve 44 and the sealing portion 45 can be appropriately cooled in each posture of the projection display device 15 as in the above-described embodiment.
　以上、本発明の望ましい実施形態について提示し、詳細に説明したが、本発明は上記実施形態に限定されるものではなく、要旨を逸脱しない限り、さまざまな変更及び修正が可能であることを理解されたい。 Although the preferred embodiments of the present invention have been presented and described in detail above, the present invention is not limited to the above-described embodiments, and it is understood that various changes and modifications can be made without departing from the gist. I want to be.
１　流入口
２　第１の封止部用吹き出し口
３　第２の封止部用吹き出し口
４　第４の封止部用吹き出し口
５　第１の流路
６　第２の流路
７　第３の流路
８　第１の封止部用吹き出し口
９　第２の封止部用吹き出し口
１０　第１の封止板
１１　第２の封止板
１２　筺体
１３　設置面
１４　投写レンズ
１５　投射型表示装置
１６　光学エンジン
１８　送風装置
１９　通路
２０　光源装置
２１　第１の回動軸
２２　第２の回動軸
２３　平板部
２４　屈折部
３０、６０　ダクト
３１　リフレクタ裏側冷却風流路
３２　冷却風出口
４０　ランプユニット
４２　ランプホルダ
４４　バルブ
４５　封止部
４６　封止部
４８　発光管
５０　リフレクタ
５２　リフレクタベース
６１　第１の球
６２　第２の球
６３　ガイド DESCRIPTION OF SYMBOLS 1 Inflow port 2 1st sealing part outlet 3 2nd sealing part outlet 4 4th sealing part outlet 5 1st flow path 6 2nd flow path 7 3rd flow Path 8 First sealing portion outlet 9 Second sealing portion outlet 10 First sealing plate 11 Second sealing plate 12 Housing 13 Installation surface 14 Projection lens 15 Projection type display device 16 Optical Engine 18 Blower device 19 Passage 20 Light source device 21 First rotation shaft 22 Second rotation shaft 23 Flat plate portion 24 Refraction portions 30, 60 Duct 31 Reflector back side cooling air flow path 32 Cooling air outlet 40 Lamp unit 42 Lamp holder 44 Valve 45 Sealing portion 46 Sealing portion 48 Light emitting tube 50 Reflector 52 Reflector base 61 First sphere 62 Second sphere 63 Guide

Claims (7)

  1. 　設置面を有する筐体と、
    　放電により光を発する１対の電極を収容するバルブと、前記バルブを挟んで対向して設けられた前記１対の電極のそれぞれに電力を供給する２つの導電部材と、該２つの導電部材が封止された２つの封止部と、を含み、前記設置面に平行に配置された発光管と、
    　凹面形状の反射面を有し、前記発光管を、前記バルブと前記封止部のうちの一方を前記反射面で囲むように収容し、一面が開放された空間を形成するリフレクタと、
    　送風装置と、
    　ダクトであって、
    　前記送風装置から送られた気体が流入する流入口と、
    　前記流入口から流入した前記気体を、前記バルブの、前記設置面から遠い第１の部分に向けて噴出する第１の流路と、
    　前記流入口から流入した前記気体を、前記バルブの、前記一方の封止部に近い第２の部分に向けて噴出する第２の流路と、
    　前記流入口から流入した前記気体を、前記バルブの、前記設置面から近い第３の部分に向けて噴出する第３の流路と、
    　前記気体を前記一方の封止部に向けて噴出する第１の開口および第２の開口と、
    　鉛直方向に対する前記設置面の向きに応じて自重により移動して前記第１の流路の入口または前記第２の流路の入口を塞いで、前記流入口からの気体を遮断、または、前記第１の開口に向かわせる第１の塞ぎ部材と
    　鉛直方向に対する前記設置面の向きに応じて自重により移動して前記第２の流路の入口または前記第３の流路の入口を塞いで、前記流入口からの前記気体を遮断、または、前記第２の開口に向かわせる第２の塞ぎ部材と、を備えるダクトと、
    　を有する光源装置。     A housing having an installation surface;
    A bulb that houses a pair of electrodes that emit light by discharge; two conductive members that supply power to each of the pair of electrodes that are provided facing each other across the bulb; and the two conductive members Two sealed portions sealed, and an arc tube arranged parallel to the installation surface;
    A reflector having a concave reflecting surface, housing the arc tube so as to surround one of the bulb and the sealing portion with the reflecting surface, and forming a space in which one surface is opened;
    A blower;
    A duct,
    An inlet into which the gas sent from the blower device flows,
    A first flow path for injecting the gas flowing in from the inflow port toward a first portion of the valve far from the installation surface;
    A second flow path for injecting the gas flowing in from the inflow port toward a second portion of the valve close to the one sealing portion;
    A third flow path for injecting the gas flowing in from the inflow port toward a third portion of the valve close to the installation surface;
    A first opening and a second opening for ejecting the gas toward the one sealing portion;
    Depending on the orientation of the installation surface with respect to the vertical direction, it moves by its own weight and closes the inlet of the first channel or the inlet of the second channel to block the gas from the inlet, or the first A first closing member that is directed toward the opening of the first, and a deadweight that moves according to the orientation of the installation surface with respect to a vertical direction to block the inlet of the second channel or the inlet of the third channel, A duct comprising: a second closing member that blocks the gas from the inflow port or directs the gas toward the second opening;
    A light source device.
  2. 　請求項１に記載の光源装置であって、
    　前記第１の塞ぎ部材は、前記設置面が鉛直下向きにされたときに前記第２の流路の入口を塞ぎ、前記設置面が鉛直上向きにされたときに前記第１の流路の入口を塞ぎ、前記発光管が前記一方の封止部が鉛直上向きとなる姿勢にされたときに前記第１の流路の入口を塞ぎ、
    　前記第２の塞ぎ部材は、前記設置面が鉛直下向きにされたときに前記第３の流路の入口を塞ぎ、前記設置面が鉛直上向きにされたときに前記第２の流路の入口を塞ぎ、前記発光管が前記一方の封止部が鉛直上向きとなる姿勢にされたときに前記第３の入口を塞ぐ、光源装置。     The light source device according to claim 1,
    The first closing member closes the inlet of the second flow path when the installation surface is vertically downward, and blocks the inlet of the first flow path when the installation surface is vertically upward. Closing the inlet of the first flow path when the arc tube is in a posture in which the one sealing portion is vertically upward;
    The second blocking member blocks the inlet of the third flow path when the installation surface is vertically downward, and blocks the inlet of the second flow path when the installation surface is vertically upward. A light source device that closes and closes the third inlet when the arc tube is in a posture in which the one sealing portion is vertically upward.
  3. 　請求項１または２に記載の光源装置であって、
    　前記設置面に遠い方から順に、前記第１の流路と前記第２の流路と前記第３の流路とが並んで設けられており、
    　前記第１の開口は、前記気体の流れの向きで、前記第１の流路の上流に位置し、
    　前記第２の開口は、前記気体の流れの向きで、前記第３の流路の上流に位置している、光源装置。     The light source device according to claim 1 or 2,
    The first flow path, the second flow path, and the third flow path are provided side by side in order from the far side to the installation surface,
    The first opening is located upstream of the first flow path in the direction of the gas flow,
    The light source device, wherein the second opening is located upstream of the third flow path in the direction of the gas flow.
  4. 　請求項１から３のいずれか１項に記載の光源装置であって、
    　前記第１の塞ぎ部材および前記第２の塞ぎ部材は、直線状に延びた平板部と、前記平板部につながり、前記平板部に対して角度を有する屈折部と、を有し、
    　前記ダクトは、前記第１の流路と前記第２の流路の間でありかつ前記気体の流れの向きで前記第１の開口よりも上流に位置する第１の回動軸と、前記第２の流路と前記第３の流路の間でありかつ前記気体の流れの向きで前記第２の開口よりも上流に位置する第２の回動軸と、を有し、
    　前記第１の塞ぎ部材は、前記気体の流れの向きで前記第１の回動軸よりも下流側に前記屈折部が位置し、前記屈折部の先端が前記設置面とは反対の方向を向くように、前記平板部の、前記屈折部とは反対の端部が前記第１の回動軸に支持され、
    　前記第２の塞ぎ部材は、前記気体の流れの向きで前記第２の回動軸よりも下流側に前記屈折部が位置し、前記屈折部の先端が前記設置面の方向を向くように、前記平板部の、前記屈折部とは反対の端部が前記第２の回動軸に支持されている、光源装置。     The light source device according to any one of claims 1 to 3,
    The first closing member and the second closing member include a flat plate portion extending linearly, and a refracting portion connected to the flat plate portion and having an angle with respect to the flat plate portion,
    The duct includes a first rotation shaft located between the first flow path and the second flow path and upstream of the first opening in the gas flow direction; A second rotation shaft located between the second flow path and the third flow path and upstream of the second opening in the direction of the gas flow,
    In the first closing member, the refracting portion is located downstream of the first rotation shaft in the direction of the gas flow, and the tip of the refracting portion faces the direction opposite to the installation surface. As described above, the end of the flat plate portion opposite to the refracting portion is supported by the first rotating shaft,
    The second closing member is arranged such that the refracting portion is positioned downstream of the second rotation shaft in the direction of the gas flow, and the tip of the refracting portion faces the direction of the installation surface. The light source device, wherein an end portion of the flat plate portion opposite to the refracting portion is supported by the second rotating shaft.
  5. 　請求項１から３のいずれか１項に記載の光源装置であって、
    　前記第１の塞ぎ部材および前記第２の塞ぎ部材として、第１の球と第２の球とがそれぞれ設けられており、
    　前記ダクトの側面には、前記気体の流れの向きで上流側に突出するＶ字形状をした、前記第１の球と前記第２の球とを案内するガイドが設けられている、光源装置。     The light source device according to any one of claims 1 to 3,
    As the first closing member and the second closing member, a first sphere and a second sphere are provided, respectively.
    A light source device, wherein a guide for guiding the first sphere and the second sphere having a V-shape projecting upstream in the direction of the gas flow is provided on a side surface of the duct.
  6. 　請求項１から５のいずれか１項に記載の光源装置であって、
    　前記第１の流路、前記第２の流路、前記第３の流路はそれぞれ同じ方向に湾曲しており、前記第１の流路および前記第３の流路の曲率は、互いに同じであり、第２の流路の曲率とは異なっている、光源装置。     The light source device according to any one of claims 1 to 5,
    The first flow path, the second flow path, and the third flow path are each curved in the same direction, and the curvatures of the first flow path and the third flow path are the same. There is a light source device that is different from the curvature of the second flow path.
  7. 　請求項１から６のいずれか１項に記載の光源装置を備えた投射型表示装置。 A projection display device comprising the light source device according to any one of claims 1 to 6.
PCT/JP2013/061883 2013-04-23 2013-04-23 Light source device and projection-type display device WO2014174589A1 (en)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
JPH09304835A (en) * 1996-05-10 1997-11-28 Sharp Corp Lamp cooling device
JP2002298639A (en) * 2001-03-29 2002-10-11 Mitsubishi Electric Corp Light source device and projection display device
JP2006243635A (en) * 2005-03-07 2006-09-14 Casio Comput Co Ltd Light source device and projector provided with it
JP2008226569A (en) * 2007-03-12 2008-09-25 Seiko Epson Corp Light source device and projector
JP2010078973A (en) * 2008-09-26 2010-04-08 Panasonic Corp Light source cooling device and projection type image display apparatus
WO2011111186A1 (en) * 2010-03-10 2011-09-15 Ｎｅｃディスプレイソリューションズ株式会社 Light source device and projection-type display device
JP2012194461A (en) * 2011-03-17 2012-10-11 Seiko Epson Corp Light source device and projector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09304835A (en) * 1996-05-10 1997-11-28 Sharp Corp Lamp cooling device
JP2002298639A (en) * 2001-03-29 2002-10-11 Mitsubishi Electric Corp Light source device and projection display device
JP2006243635A (en) * 2005-03-07 2006-09-14 Casio Comput Co Ltd Light source device and projector provided with it
JP2008226569A (en) * 2007-03-12 2008-09-25 Seiko Epson Corp Light source device and projector
JP2010078973A (en) * 2008-09-26 2010-04-08 Panasonic Corp Light source cooling device and projection type image display apparatus
WO2011111186A1 (en) * 2010-03-10 2011-09-15 Ｎｅｃディスプレイソリューションズ株式会社 Light source device and projection-type display device
JP2012194461A (en) * 2011-03-17 2012-10-11 Seiko Epson Corp Light source device and projector

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