WO2011111622A1 - 照明装置 - Google Patents
照明装置 Download PDFInfo
- Publication number
- WO2011111622A1 WO2011111622A1 PCT/JP2011/055063 JP2011055063W WO2011111622A1 WO 2011111622 A1 WO2011111622 A1 WO 2011111622A1 JP 2011055063 W JP2011055063 W JP 2011055063W WO 2011111622 A1 WO2011111622 A1 WO 2011111622A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- light source
- led
- chassis
- led module
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
- F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/01—Housings, e.g. material or assembling of housing parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0025—Combination of two or more reflectors for a single light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to an illumination device including a light source and a reflection unit that reflects light from the light source.
- LEDs light emitting diodes
- various lighting devices have been proposed that include LEDs having characteristics such as small size, low power consumption, and long life as a light source instead of conventional light sources (for example, see Patent Document 1).
- the lighting fixture disclosed in Patent Document 1 includes a lighting fixture main body (illuminating device main body, chassis) 610, a semiconductor light emitting element (light source) 621 disposed on outer edges 614 and 615 of the lighting fixture main body 610, A lens body 630 that is disposed to face the light emitting direction of the semiconductor light emitting element 621 and controls the light of the semiconductor light emitting element 621 mainly in a parallel direction, and faces the semiconductor light emitting element 621 toward the substantially central portion of the luminaire main body 610. And a globe 650 that covers the semiconductor light emitting element 621 and the reflector 640 (see FIG. 21).
- the luminaire main body 610 has a rectangular plate shape, and an adapter 612 that engages with the hook ceiling 611 is provided at a substantially central portion.
- the lighting fixture according to Patent Document 1 is attached to the fixture mounting surface A in the lighting fixture body 610 by engaging the adapter 612 with a hook ceiling 611 provided on the fixture mounting surface A such as a ceiling surface of a house or the like. It is used as a so-called ceiling light.
- the light emitted from the semiconductor light emitting element 621 in accordance with the lighting of the lighting fixture is emitted by the lens body 630 in a substantially parallel direction, that is, toward the inclined portion of the reflector 640 and further reflected by the reflector 640 to be reflected in the globe. 650 is incident.
- the semiconductor light emitting element 621 that is a light source is disposed on the outer edge portions 614 and 615 of the luminaire main body 610, the light source is provided on the outer edge portions 614 and 615 of the luminaire main body 610.
- a load is applied to the semiconductor light emitting element 621 and the wiring. Since the lighting fixture according to Patent Document 1 is configured to be held by the mounted member at the center of the lighting fixture main body 610 as described above, a load is applied to the outer edge portions 614 and 615 of the lighting fixture main body 610.
- This invention is made
- the illuminating device includes a light source provided on a central portion side of the illuminating device main body and a reflecting portion that reflects light from the light source, and the light source faces an outer edge of the illuminating device main body. Light is emitted, and the light is reflected and illuminated by the reflecting portion.
- the light source includes a light source provided on the center side of the illuminating device main body and a reflecting portion that reflects light from the light source, and the light source emits light toward the outer edge of the illuminating device main body. In addition, the light is reflected and illuminated by the reflecting portion. Since the light source is provided on the center side of the illuminating device main body and is not installed on the outer edge of the illuminating device main body, it acts on the illuminating device main body as compared with the case where the light source is installed on the outer edge of the illuminating device main body. The moment can be reduced, and the deformation of the lighting device body can be suppressed.
- the illuminating device according to the present invention is characterized in that the reflection portion has a reflection surface facing the light emission direction of the light source.
- the reflecting surface is formed with the reflecting surface facing the light emitting direction of the light source, the light emitted from the light source is irregularly reflected on the reflecting surface of the reflecting portion, that is, reflected in multiple directions. A part of the irregularly reflected light is further reflected at the other part of the reflecting part, and the other part is emitted to the outside of the illumination device without entering the reflecting part. As a result, substantially uniform illumination light with little illuminance unevenness can be obtained.
- the illuminating device is characterized in that, on the side opposite to the light source of the reflection unit, another reflection unit that reflects light from the light source to the reflection unit side is provided.
- the other reflection part that reflects the light from the light source to the reflection part side is provided on the opposite side of the light source of the reflection part, the direct light from the light source is from the vicinity of the light source. Outgoing to the outside of the illumination device can be prevented, glare can be further reduced, and uneven illumination can be further reduced to obtain substantially uniform illumination light.
- the illuminating device includes a plurality of light sources having different color temperatures, and a light source having a high color temperature is arranged on a side farther from the reflecting portion than a light source having a low color temperature.
- a light source having a high color temperature is arranged on a side farther from the reflecting portion than a light source having a low color temperature.
- the daylight color light source with a higher color temperature which is more conspicuous than the light source with a light bulb color with a lower color temperature, is arranged on the side farther from the reflector, thereby The amount of daylight-colored light that is reflected by the reflecting portion and emitted to the outside of the illumination device can be reduced, glare can be further reduced, and uneven illumination can be further reduced to obtain substantially uniform illumination light. .
- the illuminating device includes a light-diffusing cover that covers the light source and the reflective portion, and the cover is provided with an inclined portion that is inclined toward the reflective portion at an outer edge portion. .
- an inclined portion that is inclined toward the reflecting portion is provided on the outer edge portion of the light diffusing cover that covers the light source and the reflecting portion.
- An illumination device includes a power supply unit that is provided on a central portion side of the illumination device main body and supplies power to the light source, and a power supply cover that covers the power supply unit, and a peripheral portion of the power supply cover is transparent. It has a light property.
- a power supply unit that supplies power to the light source and a power supply cover that covers the power supply unit are provided on the center side of the lighting device body, and the peripheral portion of the power supply cover has translucency. It is. Since the power supply unit is arranged on the center side of the lighting device main body, the power supply unit, the light source, the power supply unit, and the electric wire connecting the light source can be concentrated on the center side of the lighting device main body. The acting moment can be further reduced, and deformation of the lighting device body can be suppressed. Since a part of the light from the light source is emitted from the peripheral portion of the power supply cover, the boundary portion with the power supply cover can be made inconspicuous.
- the illumination device includes a plurality of light sources, and at least one of the plurality of light sources can be turned on independently.
- the present invention since at least one of the plurality of light sources can be turned on independently, there is no need to provide a nightlight separately, and the number of parts can be reduced.
- the illuminating device is characterized in that the light source includes an LED.
- an LED is used as the light source. Even in a highly directional LED, by providing the reflecting portion, light from the LED is reflected in multiple directions, so that substantially uniform illumination light with little illuminance unevenness can be obtained.
- FIG. 1 is a schematic exploded perspective view of a lighting device according to Embodiment 1.
- FIG. 1 is a schematic cross-sectional view of a lighting device according to Embodiment 1.
- FIG. 3 is a schematic cross-sectional view of a central portion of the lighting apparatus according to Embodiment 1.
- FIG. 3 is a diagram showing an arrangement of main parts of the lighting apparatus according to Embodiment 1.
- 3 is a schematic diagram of an LED module of the lighting apparatus according to Embodiment 1.
- FIG. 1 is a schematic exploded perspective view of a lighting device according to Embodiment 1.
- FIG. 1 is a schematic cross-sectional view of a lighting device according to Embodiment 1.
- FIG. 3 is a schematic cross-sectional view of a central portion of the lighting apparatus according to Embodiment 1.
- FIG. 3 is a diagram showing an arrangement
- FIG. 6 is a schematic partial enlarged cross-sectional view of a lighting apparatus according to Embodiment 2.
- FIG. 6 is a schematic partial enlarged cross-sectional view of a lighting apparatus according to Embodiment 3.
- FIG. 6 is a schematic partial enlarged cross-sectional view of a lighting apparatus according to Embodiment 3.
- FIG. 6 is a schematic partial enlarged cross-sectional view of a lighting device according to Embodiment 4. It is a schematic diagram which shows the example of the other LED module applicable in this invention.
- FIG. 6 is a schematic cross-sectional view of a lighting device according to Embodiment 5.
- FIG. 10 is a schematic partial enlarged cross-sectional view of a lighting apparatus according to Embodiment 5.
- FIG. 10 is a schematic perspective view of a lens used in an illumination device according to Embodiment 5.
- 10 is a schematic cross-sectional view showing an example of another lens applicable in Embodiment 5.
- FIG. 1 is a schematic external perspective view of lighting apparatus 100 according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic exploded perspective view of lighting apparatus 100 according to Embodiment 1.
- FIG. 3 is a schematic cross-sectional view of the illumination device 100 according to the first embodiment.
- FIG. 4 is a schematic cross-sectional view of the central portion of the illumination device 100 according to Embodiment 1, and is a partially enlarged view of FIG.
- reference numeral 1 denotes a chassis as a lighting device body that holds a light source and a reflecting portion described later.
- the chassis 1 includes a disc-shaped base portion 11 having a circular mounting hole in the center, a continuous portion 12 continuously provided in a direction intersecting the outer edge portion of the base portion 11, and an outer edge portion of the continuous portion 12. And an annular portion 13 having a wide annular shape parallel to the base portion 11 and a peripheral wall portion 14 erected on the annular portion 13, and has a shallow bowl shape.
- the chassis 1 is made of a metal such as iron or aluminum, and also has a function as a heat sink that dissipates heat from a heating element such as a light source.
- the adapter 16 is attached to the mounting hole of the base 11 of the chassis 1.
- the adapter 16 has a flat columnar shape, and is connected to one end of a hooking blade that engages with an engagement hole of a mounted body such as a hooking sealing body provided on the mounted member, and a power supply unit. Connector.
- the adapter 16 is electrically and mechanically connected to the mounted body by engaging the hooking blade with the engaging hole of the mounted body.
- FIG. 5 is a diagram illustrating an arrangement of main parts of the illumination device 100 according to the first embodiment.
- FIG. 6 is a schematic diagram of the LED module 2 of the illumination device 100 according to the first embodiment.
- the LED module 2 includes a rectangular plate-shaped LED substrate 21, a plurality of daylight color LEDs 22 that are mounted in a row along the long side of the LED substrate 21 and emit daylight color light, and the daylight color.
- a plurality of bulb-colored LEDs 23 that emit light bulb-colored light are mounted in parallel along the long side of the LED substrate 21 in parallel with the LEDs 22.
- the daylight color LED 22 and the light bulb color LED 23 are, for example, a surface-mount type LED including an LED element, a hemispherical sealing resin in which the LED element is sealed and phosphors are dispersed, and an input terminal and an output terminal. It is mounted so that the optical axis is substantially orthogonal to the LED substrate 21.
- the LED substrate 21 is made of metal such as iron or aluminum, and also serves as a heat conductor that conducts heat from the daylight color LED 22 and the light bulb color LED 23 to the light source holding unit 3.
- the LED substrate 21 is more preferably made of iron having a thermal expansion coefficient close to that of the resin of the daylight color LED 22 and the light bulb color LED 23.
- the daylight color LEDs 22 are arranged on the LED substrate 21 so that the distance between the adjacent daylight color LEDs 22 is substantially the same, but from the center in the longitudinal direction of the LED substrate 21 toward the end. It is more desirable that the distance between adjacent daylight color LEDs 22 is gradually increased.
- the light source holding part 3 having a U-shaped cross section protrudes from one surface 11 a of the base part 11, and stands on a rectangular plate-like holding plate part 32 to which the LED module 2 is attached and one side of the long side of the holding board part 32.
- the fixed portion 31 is fixed to the base portion 11 of the chassis 1 and is provided in parallel on the other side of the long side of the holding plate portion 32 (opposite side of the fixed portion 31) so as to face the fixed portion 31.
- the LED module 2 is such that the longitudinal direction of the LED substrate 21 is the longitudinal direction of the holding plate portion 32, and the daylight color LED 22 is on the holding portion 33 side (in a state where it is attached to the chassis 1, the reflection sheet 4 is fixed on the non-mounting surface of the LED substrate 21 (the surface opposite to the surface on which the daylight color LED 22 and the light bulb color LED 23 are mounted).
- the light source holding unit 3 is made of metal such as aluminum, and also serves as a heat conductor that conducts heat from the LED module 2 that is a heating element to the chassis 1 that also serves as a heat sink.
- the light source holding part 3 has the holding plate part 32 facing the outer edge part of the chassis 1 with the surface of the holding plate part 32 to which the LED module 2 is attached, and the holding plate part 32 forms a regular octagonal peripheral wall.
- the light guide color LED 23 is fixed by a fixing portion 31 with a substantially equal distribution in the circumferential direction on the base portion 11 of the chassis 1 so that the direction of the optical axis of the light bulb color LED 23 faces the outer edge of the chassis 1.
- the adjacent light source holding portions 3 are fixedly connected with screws or the like.
- the LED module 2 By attaching the light source holding part 3 to the chassis 1 in this way, the LED module 2 has the LED substrate 21 substantially orthogonal to the radial direction of the chassis 1, and the optical axis directions of the daylight color LED 22 and the light bulb color LED 23 are the outer edges of the chassis 1. As shown in FIG. 5, it is arranged on the chassis 1 in a regular octagonal shape. When the LED module 2 is turned on, the light from the LED module 2 is emitted radially from the center of the base 11 of the chassis 1 toward the outer edge.
- a reflection sheet 4 is provided between the peripheral wall portion 14 and the light source holding portion 3 as a reflection portion that reflects light from the LED module 2.
- the reflection sheet 4 has a disc part 41 having an octagonal hole that matches the arrangement shape of the LED module 2 in the center, and a peripheral wall part 42 erected on the outer peripheral edge of the disc part 41. .
- the disc part 41 is gently curved from the center part toward the outer edge part so that the one surface 41a side becomes concave.
- the reflection sheet 4 is made of a resin and is subjected to surface processing so that it is easily diffusely reflected.
- the reflection sheet 4 is attached to the chassis 1 such that the convex side, in other words, the surface opposite to the one surface 41 a is the chassis 1 side. In this attached state, the peripheral wall portion 42 of the reflection sheet 4 faces the LED module 2 while being spaced apart, and the inner peripheral surface 42a of the peripheral wall portion 42 is spaced apart and faces the LED module 2 in the light emitting direction. It becomes a surface
- a top plate reflection sheet 5 is provided as another reflection portion that reflects light from the LED module 2 to the reflection sheet 4 side.
- the top plate reflection sheet 5 is made of a disk-shaped resin having an octagonal hole that matches the arrangement shape of the LED module 2 in the center, and is subjected to surface processing so that it is easily diffusely reflected.
- the top plate reflection sheet 5 is fixed to the inner surface of the holding unit 33 of the light source holding unit 3, and is attached to the opposite side of the reflection sheet 4 with respect to the LED module 2, and faces the disc portion 41 of the reflection sheet 4. Yes.
- the base 11 of the chassis 1 surrounded by the light source holding unit 3 has a C-shaped power supply board 61 and a rectifier circuit that is mounted on the power supply board 61 and rectifies current supplied from an AC power supply (AC power supply).
- a power supply unit 6 having an electronic component 62 such as a transformer for converting the rectified voltage into a predetermined voltage is provided via a power supply substrate support unit 63.
- the power board support portion 63 has a semi-annular shape in plan view and is attached to the peripheral edge portion of the attachment hole of the base portion 11 of the chassis 1.
- An engagement recess 63 a that engages with the adapter 16 is formed on the inner surface of the power supply substrate support 63.
- a holding part 63b for holding the power supply board 61 of the power supply part 6 is provided on the outer surface of the power supply board support part 63.
- the power supply unit 6 is held on the base 11 of the chassis 1 by holding the power supply board 61 by the engaging claw 34 of the light source holding part 3 and the holding part 63 b of the power supply board support part 63.
- an insulating sheet 64 is held by the light source holding unit 3 and the power supply substrate support unit 63.
- a rectangular plate-shaped control board 7 is provided via a control board support part 73.
- electronic components such as a control microcomputer and a light control circuit component are mounted.
- the control board support portion 73 has an engagement recess 73 a that engages with the adapter 16 on the inner surface, and a cylindrical support cylinder 73 b that supports the control board 7 on the outer surface.
- the control board 7 is held on the base 11 of the chassis 1 by supporting the control board 7 by the engaging claws 35 of the light source holding part 3 and the support cylinder 73 b of the control board support part 73.
- the control board 7 is provided with a receiving unit 75 that receives a signal from the remote controller.
- the LED module is obtained.
- the power supply unit 6 and the control board 7 can be integrated, and a compact unitization is possible.
- the power supply unit 6 is electrically connected to the LED module 2 via electric wires 66 and 67.
- the LED modules are electrically connected by an electric wire 69 as a jumper cable.
- the power supply unit 6 is electrically connected to the control board 7 via an electric wire 68.
- the power supply unit 6 and the control board 7 are accommodated in a cavity formed by the base 11 of the chassis 1 and the light source holding part 3, and the cavity is closed by a board cover 60.
- the substrate cover 60 includes a disc-shaped lid portion 60a having a circular hole in the center, a peripheral wall portion 60b standing on the inner edge of the lid portion 60a, and the opposite side of the lid portion 60a of the peripheral wall portion 60b. And an annular portion 60c connected in parallel to the lid portion 60a.
- the annular portion 60c is placed on the power supply substrate support portion 63 and the control substrate support portion 73, and the outer edge portion of the lid portion 60a is fixed to the holding portion 33 of the light source holding portion 3 with screws or the like.
- the chassis 1 to which the LED module 2, the power supply unit 6, the control board 7, and the board cover 60 are attached is provided with a light diffusing ring cover 8 that covers the LED module 2 and the reflection sheet 4.
- the ring cover 8 includes a disc-shaped annular portion 81 having a circular hole in the center, and a peripheral wall portion 82 erected on the outer peripheral edge of the annular portion 81.
- the ring cover 8 is attached to the peripheral wall portion 14 of the chassis 1 by a peripheral wall portion 82.
- a center cover 9 as a disk-shaped power source cover is detachably attached to the inner peripheral edge of the annular portion 81 of the ring cover 8.
- the center cover 9 includes an annular translucent part 91 and an opaque part 92 provided on the inner peripheral edge of the translucent part 91.
- the cover 92 is provided with a circular hole for receiving a signal from the remote controller, and a cover 90 is fitted into the circular hole.
- the lighting device body assembled as described above was attached to the adapter 16 so that the other surface 11b side of the base portion 11 of the chassis 1 was on the attached member side, and connected to the connector of the adapter 16 and the power source portion 6.
- the center cover 9 is attached to the lighting device body.
- the lighting device main body can be attached to and detached from the attached member such as the ceiling by removing the center cover 9, and it is not necessary to remove the ring cover 8 or the like, so that the sealing of the light source portion is maintained. .
- the LED module 2 is not installed on the outer edge of the chassis 1 (illuminating device main body).
- the distance of the LED module 2 can be shortened, and the moment acting on the chassis 1 can be reduced as compared with the case where the LED module 2 is installed on the outer edge of the chassis 1.
- the reliability of the lighting device 100 can be improved. Since the power supply unit 6 is arranged in the central part of the chassis 1, the electric wires connecting the power supply unit 6, the power supply unit 6 and the LED module 2 can be concentrated on the central part side of the chassis 1. The acting moment can be further reduced, the deformation of the chassis 1 can be suppressed, and the reliability of the lighting device 100 can be improved.
- the power supply unit 6 is connected to the AC power source via the attached body such as the adapter 16 and the hooking sealing body. In this state, when the power is turned on, an alternating current is supplied to the power supply unit 6, power of a predetermined voltage and current is supplied from the power supply unit 6 to the LED module 2, and the LED module having the daylight color LED 22 and the light bulb color LED 23. 2 lights up.
- light is emitted from the LED module 2 in the direction from the center of the lighting device 100 to the outer edge, in other words, from the center to the outer edge of the chassis 1, and the reflection sheet 4 or the top plate reflection sheet 5. Is reflected by the reflection sheet 4 or the top plate reflection sheet 5 and irradiated mainly in the direction intersecting the light emitting direction of the LED module 2 (direction intersecting the ceiling surface 110a of the ceiling 110). 7 to 9 are explanatory diagrams of light reflection from the LED module 2 in the illumination device 100 according to the first embodiment.
- a part of the light emitted from the LED module 2 is specularly reflected on one surface 41a of the disc portion 41 of the reflection sheet 4 as indicated by arrows in FIG.
- the other part of the light emitted from the LED module 2 is incident on the inner peripheral surface 42a of the peripheral wall portion 42 of the reflecting sheet 4 that is separated and opposed in the light emitting direction of the LED module 2 at a substantially right angle. It is irregularly reflected on the peripheral surface 42a, that is, reflected in multiple directions.
- a part of the light irregularly reflected on the inner peripheral surface 42 a of the peripheral wall portion 42 of the reflection sheet 4 enters the one surface 41 a of the reflection sheet 4, is further reflected on the one surface 41 a, and the other portion enters the reflection sheet 4.
- the light is emitted from the outer surface 81 b of the ring cover 8 to the outside of the illumination device 100 while diffusing inside the ring cover 8.
- the surrounding wall part 42 of the reflection sheet 4 is made higher by the predetermined height (H) than the optical axis of the daytime white LED 22 of the LED module 2 as shown in FIG.
- This predetermined height (H) is appropriately set so that light is sufficiently emitted from the lighting device 100 toward the direction (indoor living space) intersecting the ceiling surface 110a according to the light distribution characteristics of the LED module 2. It is set.
- the light emission direction of the LED module 2 is changed from the center of the lighting device 100 to the outer edge, in other words, from the center of the chassis 1 to the outer edge, and the irradiation direction of the lighting device 100 is the LED module.
- the light emitted from the LED module 2 can be reduced in the light directly incident on the ring cover 8 and emitted to the outside of the illumination device 100.
- the direct light from 2 can be reduced from entering the user's eyes, and glare can be reduced.
- the lighting device darkens stepwise from the central portion toward the outer edge portion.
- the light from the LED module 2 can be reflected in the reflection sheet 4 in multiple directions, the outer edge and the center of the lighting device 100 can be brightened, and substantially uniform illumination light with less uneven illuminance can be obtained. Obtainable.
- Direct light from the LED module 2 can be prevented from being emitted from the vicinity of the LED module 2 to the outside of the lighting device 100, and glare can be further reduced. And since light intensity becomes low / high according to the length / short of the distance from the LED module 2, it prevents that the direct light of the LED module 2 radiate
- FIG. thus, it is possible to prevent light having high light intensity from being emitted to the outside of the lighting device 100, and to further reduce unevenness in illuminance and obtain substantially uniform illumination light.
- daylight color LED22 which is a light source with high color temperature is distribute
- the amount of light from the daylight color LED 22 that is conspicuous and reflected by the reflection sheet 4 in the vicinity of the LED module 2 and emitted to the outside of the lighting device 100 can be reduced. Since it is possible to reduce the emission of daylight-colored light with high light intensity, it is possible to further reduce glare and further reduce unevenness in illuminance to obtain substantially uniform illumination light.
- a space (gap) through which light passes is provided between the outer edge of the reflection sheet 4 and the ring cover 8, and the LED module 2 and the outer edge portion of the light-diffusing ring cover 8 that covers the reflection sheet 4, more specifically, between the annular portion 81 of the ring cover 8 and the peripheral wall portion 82 erected on the outer peripheral edge of the annular portion 81.
- the connecting portion is provided with an inclined portion 83 that is inclined toward the reflection sheet 4 so that the angle formed with the optical axis of the daylight color LED 22 is a predetermined angle ⁇ 1.
- the inclined portion 83 may be curved as in the first embodiment or may be a slope.
- the peripheral portion of the center cover 9 serving as a power supply cover that covers the power supply unit 6 provided at the center of the chassis 1 is an annular light transmitting portion 91.
- the translucent part 91 of the center cover 9 has an outer diameter larger than that of the top plate reflection sheet 5.
- a part of the light from the LED module 2 is incident on the translucent part 91, which is the peripheral part of the center cover 9, at a large incident angle, and is irregularly reflected by the translucent part 91. That is, it reflects in multiple directions.
- a part of the light irregularly reflected by the translucent part 91 is further reflected by the ring cover 8 and emitted to the outside of the illumination device 100.
- part of the light from the LED module 2 is emitted in multiple directions at the peripheral edge of the center cover 9, so that the boundary between the center cover 9 and the ring cover 8 can be made inconspicuous.
- FIG. 10 is an explanatory diagram of a nightlight in the lighting device according to Embodiment 1, and is a schematic circuit diagram of a light bulb color LED 23 portion of a specific LED module 2.
- power is supplied from the power supply unit 6 by the electric wire 66 to the LED row in which a plurality of light bulb colored LEDs 23 are connected in series, and one of the plurality of light bulb colored LEDs 23 is powered by the electric wire 67. Electric power can be supplied independently from the unit 6.
- at least one light bulb color LED 23 can be turned on independently, it is not necessary to provide a nightlight separately, and the number of parts can be reduced.
- the light bulb colored LEDs 23 mounted on the plurality of LED modules 2 can be independently turned on, and the plurality of light bulb colored LEDs 23 are used as night lights. However, there may be only one nightlight. Further, although the light bulb color LED 23 is used as the night light, the daylight color LED 22 may be used instead of or in addition to this.
- an LED is used as the light source. Even in a highly directional LED, the provision of the reflection sheet 4 described above allows light from the LED module 2 to be reflected in multiple directions, so that substantially uniform illumination light with little illuminance unevenness can be obtained.
- FIG. 11 is a schematic cross-sectional view of lighting apparatus 200 according to Embodiment 2 of the present invention.
- FIG. 12 is a schematic partial enlarged cross-sectional view of lighting apparatus 200 according to Embodiment 2, and is an explanatory diagram of light reflection from LED module 2 in lighting apparatus 200 according to Embodiment 2.
- FIG. In the second embodiment the shape of the reflection sheet 104 is different from that of the illumination device 100 of the first embodiment, and the top plate reflection sheet 105, the chassis 101, and the ring cover according to the shape of the reflection sheet 104.
- the shape of 108 is different.
- the chassis 101 includes a disc-shaped base 111 having a circular hole in the center, a continuous portion 112 connected in a direction intersecting the outer edge of the base 111, and an outer edge of the continuous portion 112.
- An annular holding portion 113 that is provided in a crossing direction and holds the reflection sheet 104 and has a shallow, substantially bowl shape.
- the chassis 101 is made of metal such as iron or aluminum, and also has a function as a heat sink that dissipates heat from a heating element such as a light source.
- the reflection sheet 104 has a disk shape having an octagonal hole matched with the arrangement shape of the LED module 2 in the center, and is curved so that the one surface 104a side is concave. More specifically, the reflective sheet 104 is configured such that one surface 104a, which is a reflective surface, is gently inclined from the central portion toward the middle portion of the central portion and the outer edge portion toward the outer edge portion, and the intermediate portion is formed into a flat plate shape. The intermediate portion is gently inclined toward the center portion toward the outer edge portion.
- the reflection sheet 104 is made of resin, and is subjected to surface processing so that it is easily diffusely reflected.
- the reflection sheet 104 is attached to the chassis 101 such that the convex side, in other words, the surface opposite to the one surface 104a is on the chassis 101 side.
- the top plate reflection sheet 105 is made of a disk-shaped resin having an octagonal hole that matches the arrangement shape of the LED module 2 in the center, and is subjected to surface processing so that it is easily diffusely reflected.
- the top plate reflection sheet 105 has the reflection surface inclined outward so that the reflection surface side is convex.
- the ring cover 108 includes a disc-shaped annular portion 181 having a circular hole in the center, and a peripheral wall portion 182 erected on the outer peripheral edge of the annular portion 181.
- the ring cover 108 is attached to the chassis 101 at the peripheral wall portion 182.
- the other configuration is the same as that of the first embodiment shown in FIGS. 3 and 7, and therefore, the same reference numerals as those in FIGS. 3 and 7 are attached to corresponding components, and detailed description of the configuration is omitted. To do.
- the LED module 2 is not installed on the outer edge portion of the chassis 101 (the lighting device main body), and thus the lighting device 100 according to the first embodiment and Similarly, the moment acting on the chassis 101 can be reduced, the deformation of the chassis 101 can be suppressed, and the reliability of the lighting device 200 can be improved.
- a part of the light emitted from the LED module 2 is specularly reflected on the one surface 104a of the reflection sheet 104 as indicated by an arrow in FIG.
- Other part of the light emitted from the LED module 2 enters the inner surface 181a of the ring cover 108 without entering the reflection sheet 104, and diffuses inside the ring cover 108 from the outer surface 181b of the ring cover 108.
- the light is emitted outside the illumination device 200. Further, a part of the light emitted from the LED module 2 is reflected by the top plate reflection sheet 105 as indicated by arrows in FIG.
- the light emitting direction of the LED module 2 is changed from the center of the lighting device 200 to the outer edge, in other words, from the center of the chassis 101 to the outer edge. Since the irradiation direction of 200 is a direction intersecting with the light emission direction of the LED module 2, glare can be reduced as in the illumination device 100 according to the first embodiment.
- the light from the LED module 2 can be reflected in multiple directions in the reflective sheet 104 similarly to the illuminating device 100 of Embodiment 1, and the illumination apparatus 200 of FIG.
- the outer edge portion and the central portion can be brightened, and substantially uniform illumination light with little illuminance unevenness can be obtained.
- the top plate reflection sheet 105 can prevent the direct light of the LED module 2 from being emitted from the vicinity of the LED module 2 to the outside of the illumination device 200. Can be further reduced, and uneven illumination can be further reduced to obtain substantially uniform illumination light.
- FIG. 13 is a schematic partial enlarged cross-sectional view of lighting apparatus 300 according to Embodiment 3.
- the LED board 121 is provided separately for the daylight color LED 22 and the light bulb color LED 23, and these LED boards 121 are attached to be inclined with respect to the holding plate part 232 of the light source holding part 203.
- the daylight color LED 22 is more inclined toward the reflection sheet 4 than the light bulb color LED 23. Since other configurations are the same as those of the first embodiment shown in FIG. 3 and the like, the same reference numerals as those in FIG.
- the daylight color LED 22 of the LED module 102 and the LED board 121 of the light bulb color LED 23 are inclined toward the reflection sheet 4, so that the intermediate portion between the central portion and the outer edge portion of the lighting device 300 is obtained. And the outer edge portion can be brightened, and substantially uniform illumination light can be obtained as in the first embodiment.
- the daylight color LED 22 is inclined more toward the reflection sheet 4 than the light bulb color LED 23, but is not limited to this, and the inclination angle may be the same, The reverse may be possible.
- the LED module 102 is not installed on the outer edge of the chassis 1 (illuminating device main body), so that the chassis 1 is similar to the lighting device 100 according to the first embodiment. Therefore, the deformation of the chassis 1 can be suppressed and the reliability of the lighting device 300 can be improved.
- FIG. 14 is a schematic partial enlarged cross-sectional view of lighting apparatus 400 according to Embodiment 4.
- the illuminating device 400 which concerns on this Embodiment 4 becomes a structure which added the mirror reflection member 55 which specularly reflects the light from the LED module 2 to the illuminating device 100 of Embodiment 1.
- FIG. 14 is a schematic partial enlarged cross-sectional view of lighting apparatus 400 according to Embodiment 4.
- the illuminating device 400 which concerns on this Embodiment 4 becomes a structure which added the mirror reflection member 55 which specularly reflects the light from the LED module 2 to the illuminating device 100 of Embodiment 1.
- Specular reflection member 55 such as a mirror is attached to light source holding unit 3.
- the specular reflection member 55 is formed by forming a plate-like member having an octagonal hole in the center into a partial conical shell shape, with the one surface 55a facing outward so that the one surface 55a side that is the reflection surface is convex. It is tilted.
- the specular reflection member 55 is on the side where the light bulb color LED 23 of the LED module 2 is mounted (the side opposite to the long side on which the top plate reflection sheet 5 is provided) so that the one surface 55a side is the LED module 2 side. It is fixed to the holding plate part 32 of the light source holding part 3 along the long side.
- the specular reflection member 55 is not limited to a mirror, and may be any member that can perform specular reflection. Since other configurations are the same as those of the first embodiment shown in FIG. 7, the same reference numerals as those in FIG. 7 are given to corresponding components, and detailed description of the configurations is omitted.
- a part of the light emitted from the LED module 2 is emitted toward the chassis 1 in the vicinity of the LED module 2, and as shown by an arrow in FIG.
- the light is specularly reflected on one surface 55 a of the reflecting member 55 and emitted toward the outer edge of the lighting device 400.
- the specular reflection member 55 is not provided, a part of the light emitted from the LED module 2 toward the chassis 1 in the vicinity of the LED module 2 is reflected by the chassis 1 as indicated by a two-dot chain line in FIG. Then, the light enters the ring cover 8 in the vicinity of the LED module 2 and is emitted outside the illumination device 400 while diffusing inside the ring cover 8.
- the light intensity becomes low / high according to the length / shortness of the distance from the LED module 2, when the specular reflection member 55 is not provided, the light is emitted from the vicinity of the LED module 2 to the outside of the illumination device 400. Since the light having high light intensity is included in the light to be emitted, by providing the specular reflection member 55, the light having high light intensity can be reflected in the direction of the outer edge portion of the lighting device 400.
- the lighting device 400 according to the fourth embodiment in addition to the effects obtained in the configuration of the lighting device 100 according to the first embodiment, light with high light intensity from the vicinity of the LED module 2 is emitted from the lighting device 400. It is possible to further prevent the light from being emitted to the outside.
- the LED module 2 in which the light sources having different color temperatures (the daylight color LED 22 and the light bulb color LED 23) are arranged in parallel as shown in FIG. 6 is used.
- Such LED modules are not limited to this, and for example, light sources having different color temperatures may be arranged in a substantially straight line.
- FIG. 15 is a schematic view showing an example of another LED module 202 applicable in the present invention.
- the LED module 202 includes a rectangular plate-shaped LED board 221, a plurality of daylight color LEDs 22 that are mounted in a row along the long side of the LED board 221, and emit daylight color light. It is mounted between the daylight color LEDs 22 and includes a plurality of light bulb color LEDs 23 that emit light bulb light.
- the LED module 202 is different from the LED module 2 in that the daylight color LED 22 and the light bulb color LED 23 have a light emitting portion (a portion of the LED element and the sealing resin, indicated by a circle in the drawing) and the daylight color.
- the daylight color LEDs 22 and the light bulb color LEDs 23 are arranged substantially alternately so that the light emitting portions of the LEDs 22 and the light bulb color LEDs 23 are positioned on a substantially straight line.
- 1st connection part 25 is provided in the both ends of the circuit pattern for the power supply which connects the some daylight color LED22 in series.
- the 2nd connection part 24 is provided in the both ends of the circuit pattern for the power supply which connects the some light bulb color LED23 in series.
- the connection between the several LED modules 202 is performed by connecting these 1st connection parts 25 and the 2nd connection parts 24 with the electric wire 69 which is a jumper cable.
- the reflection sheet, the top plate reflection sheet, and the specular reflection member are compared with the case where they are arranged in parallel. It becomes easy to optimally design the reflecting member such as, and it becomes possible to obtain substantially uniform illumination light with less unevenness in illuminance.
- the daylight color LED 22 and the light bulb color LED 23 are mounted on the LED substrate 221 so that the light emitting part side is on the inside, as shown in FIG. 15, other LEDs are bypassed without making the wiring length so long. Thus, a circuit pattern can be formed and wiring becomes easy.
- FIG. 16 is a schematic cross-sectional view of lighting apparatus 500 according to Embodiment 5.
- FIG. 17 is a schematic partial enlarged cross-sectional view of lighting apparatus 500 according to Embodiment 5.
- a lens is used in addition to a reflecting member such as a reflecting sheet.
- the chassis 201 that holds the light source and the reflecting portion is a disc having a circular hole in the center.
- the chassis 201 is made of a metal such as iron or aluminum, and also has a function as a heat sink that dissipates heat from a heating element such as a light source.
- the LED module 202 is attached to the one surface 201a of the chassis 201 so as to surround the periphery of the adapter 16 via the light source holding unit 3 in the radial direction.
- the LED module 202 is the same as the LED module 202 described in Embodiment 4 with reference to FIG.
- the chassis 201 is provided with a reflection sheet 204 as a reflection portion that reflects light from the LED module 202.
- the reflection sheet 204 is made of a resin having a disk shape having an octagonal hole matched with the arrangement shape of the LED module 2 in the center, and the surface 204a is subjected to surface processing so that it is easily diffusely reflected.
- the reflection sheet 204 is attached to the one surface 201a of the chassis 201 so that the surface opposite to the one surface 204a is on the chassis 201 side.
- the LED module 202 is provided with a lens 56 as an optical member that changes the direction of light emitted from the LED module 202.
- FIG. 18 is a schematic perspective view of lens 56 used in lighting apparatus 500 according to Embodiment 5.
- the lens 56 has a curved surface portion symmetrical with respect to a plane perpendicular to the LED substrate 221 formed by connecting a line (optical axis) passing through the optical center of the daylight white LED 22 of the LED module 202 and the light bulb color LED 23.
- a light reflection surface that has a light incident surface 56a on which light emitted from the white LED 22 and the light bulb color LED 23 is incident and a curved surface portion that is symmetrical with respect to a surface perpendicular to the LED substrate 221, and reflects the light incident on the light incident surface 56a.
- a light emitting surface 56d which is a rectangular flat surface, the light emitting surface 56d from which the light incident on the light incident surface 56a and the light reflected by the reflecting surface 56c are emitted, and parallel to the light emitting surface 56d; 56a and a bottom surface 56b that also serves as a support surface for the lens connecting the edges of the light reflecting surface 56c.
- the light reflecting surface 56c is appropriately emitted so that light emitted from the daylight white LED 22 and the light bulb color LED 23 and incident on the light incident surface 56a is reflected in a direction parallel to the optical axis of the day white LED 22 and the light bulb color LED 23. Is formed.
- the lens 56 is attached to the LED substrate 221 of the LED module 202 on the bottom surface 56b side so as to cover the light emitting direction of the daylight white LED 22 and the light bulb color LED 23 mounted on the LED substrate 221 of the LED module 202.
- the daylight white LED 22 and the light bulb color LED 23 are arranged such that the light emitting surfaces of the day white LED 22 and the light bulb color LED 23 are located on the plane including the edge of the light incident surface 56a or on the lens 56 side from the plane. .
- the chassis 201 is provided with a light diffusing ring cover 208 covering the LED module 202 and the reflection sheet 204.
- the ring cover 208 has a circular hole in the center, is curved so that the side of the one surface 208a is concave from the center to the outer edge, and the angle between the one surface 208a and the direction of the optical axis of the LED is It is formed so as to continuously increase from the central portion toward the outer edge portion. Since other configurations are the same as those of the first embodiment shown in FIGS. 3 and 8, the same reference numerals as those in FIGS. 3 and 8 are given to corresponding components, and detailed description of the configurations is omitted. To do.
- the LED module 202 is not installed on the outer edge of the chassis 201 (illuminating device main body).
- the distance of the LED module 202 can be shortened, and the moment acting on the chassis 201 can be reduced as compared with the case where the LED module 202 is installed on the outer edge of the chassis 201, so that the deformation of the chassis 201 is suppressed.
- the reliability of the lighting device 500 can be improved. Since the power supply unit 6 is arranged in the central portion of the chassis 201, the electric wires connecting the power supply unit 6, the power supply unit 6 and the LED module 202 can be concentrated on the central portion side of the chassis 201. The acting moment can be further reduced, the deformation of the chassis 201 can be suppressed, and the reliability of the lighting device 500 can be improved.
- the light emitted from the LED module 202 is incident on the light incident surface 56a of the lens 56 as indicated by an arrow in FIG.
- a part of the light exits as it is from the light exit surface 56d in a direction perpendicular to the light exit surface 56d (a direction parallel to the optical axes of the daylight white LED 22 and the light bulb color LED 23), and the other part is reflected by the light reflection surface 56c.
- the light exits from the light exit surface 56d in a direction orthogonal to the light exit surface 56d. That is, by using the lens 56, the light from the LED module 202 is emitted in the direction from the center portion of the lighting device 500 to the outer edge portion, in other words, from the center portion of the chassis 201 to the outer edge portion.
- the light emitted from the lens 56 enters the ring cover 208, a part of the incident light is reflected to the chassis 201 side on one surface 208a of the ring cover 208, and the other part is inside the ring cover 208.
- the light is emitted from the ring cover 208 to the outside of the lighting device 500 while diffusing.
- the ring cover 208 is formed so that the angle formed between the one surface 208a and the optical axis direction of the LED continuously increases from the central portion toward the outer edge portion, the light incident on the ring cover 208 is On the central portion side of the cover 208, since the incident angle is small, total reflection is likely to occur, and as the incident angle increases toward the outer edge of the ring cover 208, irregular reflection is likely to occur.
- the light reflected on the chassis 201 side is further reflected on the reflection sheet 204 by the ring cover 208 side.
- the light from the lens 56 can be reflected in multiple directions, and the range from the outer edge to the center of the lighting device is brightened. As in the above-described embodiment, substantially uniform illumination light with little illuminance unevenness can be obtained.
- the direction of the light emitted from the lens 56 is from the center of the lighting device 500 to the outer edge, in other words, from the center of the chassis 201 to the outer edge, and on the side of the center of the ring cover 208.
- almost no direct light is transmitted through the ring cover 208 on the side of the center portion of the ring cover 208, in other words, in the vicinity of the LED module 202. That is, the light that directly enters the ring cover 208 in the vicinity of the LED module 202 and exits the illumination device 500 can be reduced, and the direct light from the LED module 202 is reduced from entering the user's eyes. And the glare can be reduced.
- the shape of the lens 56 may be such that light from the daylight white LED 22 and the light bulb color LED 23 can be condensed by bending the light in a direction nearly parallel to the optical axis of the day white LED 22 and the light bulb color LED 23. That's fine.
- the lens 56 in the fifth embodiment is formed so as to be provided for one LED module 202.
- the present invention is not limited to this, and one lens is provided for each LED. May be. In this case, lenses having a truncated cone shape are arranged in parallel by the number of LEDs.
- a lens may be formed by connecting a part of the plurality of truncated cone lenses.
- FIG. 19 is a schematic cross-sectional view showing an example of another lens applicable in the fifth embodiment, which is an example of a lens in which a part of a plurality of truncated cone-shaped lenses are connected.
- FIG. 19 is a schematic cross-sectional view of the lens 57 cut along a plane perpendicular to the LED substrate 221 formed by connecting the optical axes of the daylight white LED 22 and the light bulb color LED 23 of the LED module 202.
- the lens 57 has a curved surface portion that is axisymmetric with respect to the optical axis of each LED, and a light incident surface 57a on which light emitted from the daylight white LED 22 and the light bulb color LED 23 of the LED module 202 is incident, and the optical axis of each LED.
- a light reflecting surface 57c that has an axisymmetric curved surface and reflects light incident on the light incident surface 57a, and a rectangular flat surface.
- Light incident on the light incident surface 57a and light reflected on the reflecting surface 57c are An outgoing light exit surface 57d and a bottom surface 57b that is parallel to the light exit surface 57d and also serves as a lens support surface connecting the edges of the light incident surface 57a and the light reflecting surface 57c.
- the light reflecting surface 57c is appropriately output so that light emitted from the daylight white LED 22 and the light bulb color LED 23 and incident on the light incident surface 57a is reflected in a direction parallel to the optical axis of the day white LED 22 and the light bulb color LED 23. Is formed.
- the lens 57 is disposed on the LED substrate 221 of the LED module 202 on the bottom surface 57 b side so as to cover the light emitting direction of the daylight white LED 22 and the light bulb color LED 23 mounted on the LED substrate 221 of the LED module 202. To be used. Even when the lens 57 is used, the same effect as the lens 56 can be obtained.
- a flat sheet is used as the reflection sheet.
- the present invention is not limited to this, and a protrusion having an inclined surface inclined toward the LED module may be provided on one surface.
- 20A to 20C are explanatory diagrams of protrusions provided on the reflection sheet 304. According to the direction from the center to the outer edge of the illuminating device, in other words, according to the direction from the center to the outer edge of the chassis, the protrusion height of the protrusion is increased and the interval between adjacent protrusions is decreased. More specifically, one surface of the reflection sheet 304 on the center side of the chassis has a gently inclined surface and a protrusion with a large interval between the protrusions is formed (see FIG.
- the incident angle of the light incident on the reflection sheet 304 to the reflection sheet 304 increases as it goes to the outer edge of the reflection sheet 304. Since irregular reflection is likely to occur, the light from the LED module can be reflected in multiple directions on the reflection sheet 304, and the outer edge and the center of the lighting device can be brightened. A substantially uniform illumination light with little illuminance unevenness can be obtained.
- the LED substrate is arranged in the chassis so as to have an octagonal shape, but is not limited to this, and may be a polygonal shape other than an octagonal shape or a circular shape.
- both the reflection sheet and the top plate reflection sheet are used as the reflection member, but only the reflection sheet may be used.
- the reflection sheet may be eliminated, and one surface (inner surface) of the chassis may be used as a reflection surface.
- a reflection sheet is disposed on one of the center side and the outer edge side of the chassis, and the other is provided. The structure which has arranged the reflective surface may be sufficient.
- the top plate reflection sheet as the reflecting portion may be eliminated, and the inner surface of the holding portion of the light source holding portion may be used as the reflecting surface.
- the configuration described in the first to fifth embodiments and the configuration in which the protrusion is provided on one surface of the reflection sheet can be used in combination of a plurality of embodiments. In combination, it is possible to obtain substantially uniform illumination light with less illuminance unevenness.
- the light source holding part is provided separately from the chassis, but may be provided integrally with the chassis.
- the LED module is provided at the center of the chassis.
- the LED module is not limited to a strict center.
- the adapter is arranged so as to surround the periphery of the adapter in the radial direction. If it is provided so as to emit light toward the part, it is possible to suppress deformation such as bending of the chassis.
- the light sources having different color temperatures there are two types of light sources of daylight white and light bulb color, but the present invention is not limited to this.
- One type of light source or three or more types of light sources may be used.
- LED is used as a light source, it is not limited to this, You may use EL (Electro Luminescence) etc.
- the illumination device that is detachably attached to the attached body such as the hooking ceiling body provided on the attached member such as the ceiling has been described as an example. This type of lighting device can also be applied.
- Chassis device main body
- LED module light source
- Daylight color LED light source, LED
- Light bulb color LED light source, LED
- Light source holding part 4,104,204,304
- Reflective sheet reflective part 42a Inner peripheral surface (reflection surface) 5,105 Top reflector sheet (other reflectors) 8,108,208 Ring cover (cover) 83,183 Inclined part 9 Center cover (Power supply cover)
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Led Device Packages (AREA)
Abstract
Description
(実施の形態1)
図1は、本発明の実施の形態1に係る照明装置100の模式的外観斜視図である。図2は、実施の形態1に係る照明装置100の模式的分解斜視図である。図3は、実施の形態1に係る照明装置100の模式的断面図である。図4は、実施の形態1に係る照明装置100の中央部の模式的断面図であり、図3の部分拡大図である。
図11は、本発明の実施の形態2に係る照明装置200の模式的断面図である。図12は、実施の形態2に係る照明装置200の模式的部分拡大断面図であり、実施の形態2に係る照明装置200におけるLEDモジュール2からの光の反射の説明図である。本実施の形態2においては、実施の形態1の照明装置100とは、反射シート104の形状を異ならせており、反射シート104の形状に応じて、天板反射シート105、シャーシ101及びリングカバー108の形状が異なっている。
図13は、実施の形態3に係る照明装置300の模式的部分拡大断面図である。本実施の形態3においては、昼光色LED22と電球色LED23に対して各別にLED基板121を設け、これらのLED基板121を光源保持部203の保持板部232に対して傾斜させて取付けている。昼光色LED22の方が電球色LED23よりも反射シート4に向けてより傾斜させてある例である。その他の構成は、図3及に示す実施の形態1と同様であるため、対応する構成部材に図3と同一の参照符号を付して、その構成の詳細な説明を省略する。
図14は、実施の形態4に係る照明装置400の模式的部分拡大断面図である。本実施の形態4に係る照明装置400は、実施の形態1の照明装置100にLEDモジュール2からの光を鏡面反射する鏡面反射部材55を追加した構成となっている。
図16は、実施の形態5に係る照明装置500の模式的断面図である。図17は、実施の形態5に係る照明装置500の模式的部分拡大断面図である。本実施の形態5においては、以上の実施の形態1乃至4とは異なり、反射シート等の反射部材に加えてレンズを用いている。
2,102,202 LEDモジュール(光源)
22 昼光色LED(光源,LED)
23 電球色LED(光源,LED)
3,103,203 光源保持部
4,104,204,304 反射シート(反射部)
42a 内周面(反射面)
5,105 天板反射シート(他の反射部)
8,108,208 リングカバー(カバー)
83,183 傾斜部
9 センタカバー(電源カバー)
Claims (8)
- 照明装置本体の中央部側に設けられた光源と、該光源からの光を反射する反射部とを備え、
前記光源は、前記照明装置本体の外縁部に向けて光を出射し、前記反射部にて前記光を反射して照明するようになしてあることを特徴とする照明装置。 - 前記反射部は、前記光源の光出射方向に対向する反射面を有することを特徴とする請求項1に記載の照明装置。
- 前記反射部の前記光源に関して反対側に、該光源からの光を前記反射部の側に反射する他の反射部を備えることを特徴とする請求項1又は2に記載の照明装置。
- 色温度が異なる複数の光源を備え、
色温度の高い光源が色温度の低い光源よりも前記反射部から遠い側に配してあることを特徴とする請求項1から3の何れか一つに記載の照明装置。 - 前記光源及び反射部を覆う光拡散性を有するカバーを備え、
該カバーは、前記反射部に向けて傾斜する傾斜部が外縁部に設けてあることを特徴とする請求項1から4の何れか一つに記載の照明装置。 - 前記照明装置本体の中央部側に設けられ、前記光源に電力を供給する電源部と、該電源部を覆う電源カバーとを備え、該電源カバーの周縁部が透光性を有することを特徴とする請求項1から5の何れか一つに記載の照明装置。
- 複数の光源を備え、該複数の光源のうち少なくとも一つが独立的に点灯可能であることを特徴とする請求項1から6の何れか一つに記載の照明装置。
- 前記光源はLEDを含んでなることを特徴とする請求項1から7の何れか一つに記載の照明装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11753281.2A EP2546566A4 (en) | 2010-03-12 | 2011-03-04 | ILLUMINATION DEVICE |
KR1020127023573A KR101392533B1 (ko) | 2010-03-12 | 2011-03-04 | 조명 장치 |
US13/634,173 US20130003369A1 (en) | 2010-03-12 | 2011-03-04 | Lighting apparatus |
CN2011800134994A CN102792091A (zh) | 2010-03-12 | 2011-03-04 | 照明装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010-056367 | 2010-03-12 | ||
JP2010056367A JP4786750B2 (ja) | 2010-03-12 | 2010-03-12 | 照明装置 |
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WO2011111622A1 true WO2011111622A1 (ja) | 2011-09-15 |
Family
ID=44563426
Family Applications (1)
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PCT/JP2011/055063 WO2011111622A1 (ja) | 2010-03-12 | 2011-03-04 | 照明装置 |
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---|---|
US (1) | US20130003369A1 (ja) |
EP (1) | EP2546566A4 (ja) |
JP (1) | JP4786750B2 (ja) |
KR (1) | KR101392533B1 (ja) |
CN (1) | CN102792091A (ja) |
WO (1) | WO2011111622A1 (ja) |
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WO2013046305A1 (ja) * | 2011-09-26 | 2013-04-04 | 東芝ライテック株式会社 | 発光装置及び照明器具 |
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- 2011-03-04 WO PCT/JP2011/055063 patent/WO2011111622A1/ja active Application Filing
- 2011-03-04 KR KR1020127023573A patent/KR101392533B1/ko not_active IP Right Cessation
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CN102927510A (zh) * | 2012-10-27 | 2013-02-13 | 马守峰 | 一种吸顶灯 |
Also Published As
Publication number | Publication date |
---|---|
JP4786750B2 (ja) | 2011-10-05 |
US20130003369A1 (en) | 2013-01-03 |
CN102792091A (zh) | 2012-11-21 |
EP2546566A1 (en) | 2013-01-16 |
EP2546566A4 (en) | 2013-11-27 |
JP2011192475A (ja) | 2011-09-29 |
KR20120114404A (ko) | 2012-10-16 |
KR101392533B1 (ko) | 2014-05-07 |
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