WO2014068932A1 - 照明装置 - Google Patents
照明装置 Download PDFInfo
- Publication number
- WO2014068932A1 WO2014068932A1 PCT/JP2013/006329 JP2013006329W WO2014068932A1 WO 2014068932 A1 WO2014068932 A1 WO 2014068932A1 JP 2013006329 W JP2013006329 W JP 2013006329W WO 2014068932 A1 WO2014068932 A1 WO 2014068932A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- ceiling
- guide plate
- light guide
- light emitting
- Prior art date
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Classifications
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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
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
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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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
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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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
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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]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
Definitions
- the present invention relates to an illuminating device including a light emitting element such as an LED (Light Emitting Diode) as a light source, and more particularly, to a direct type illuminating device that emits surface light using a light guide plate.
- a light emitting element such as an LED (Light Emitting Diode) as a light source
- a direct type illuminating device that emits surface light using a light guide plate.
- a direct type illumination device that emits light by providing a light emitting element such as an LED on the back side of a light guide plate is known (see, for example, Patent Document 1 and Patent Document 2).
- the light emitting element is disposed on the back side of the light guide plate with the main emission direction facing the light guide plate.
- the light emitted from the light emitting element which is a point light source is incident from the incident surface of the light guide plate facing the light emitting element, diffused and guided in the light guide plate, and then emitted as planar light from the light emitting plate exit surface.
- surface light emission is realizable using the light radiate
- the light emitting element is arranged on the back side of the light guide plate, so that more light emitting elements are provided in a larger area compared to the edge light method in which the light emitting element is provided on the side surface side of the light guide plate. Can be arranged. Therefore, there is a feature that a larger light emission amount can be obtained.
- the direct type illumination device it is necessary to dispose a light emitting element on the back side of the light guide plate, and the illumination device becomes thicker than the edge light illumination device.
- the illumination device becomes thicker than the edge light illumination device.
- the present invention has been made in view of the above circumstances, and in a lighting device having a configuration in which a light emitting element and a light guide plate are vertically stacked, when the lighting device is attached to the ceiling, the ceiling
- An object of the present invention is to provide an illumination device that has a small amount of protrusion from the surface and hardly impairs the beauty of the room.
- a lighting device includes at least one light-emitting element, a light guide plate, and a housing that accommodates them, and uses an embedded hole formed in a ceiling. It is a lighting device that can be installed.
- a part of the face plate facing the ceiling surface of the casing is provided with a crown-shaped portion that immerses in the embedding hole when the casing is attached to the ceiling.
- the said light emitting element is arrange
- a crown-shaped portion that is inserted into the embedding hole in a state where the housing is attached to the ceiling is provided on a part of the face plate facing the ceiling surface of the housing.
- the light emitting element is disposed in the internal space of the crown portion.
- the protrusion amount from a ceiling surface can be decreased.
- the amount of protrusion from the ceiling surface is small and it is difficult for the residents in the room to stand out.
- the light guide plate is disposed in at least a part of the remaining portion of the housing in a state of covering the light emitting element, sufficient brightness as the lighting device can be ensured.
- FIG. 1 is a perspective view showing a lighting device according to a first embodiment. 1 is an exploded perspective view showing a lighting device according to Embodiment 1.
- FIG. 1 is a cross-sectional view showing a housing according to a first embodiment. 1 is a cross-sectional view illustrating a lighting device according to a first embodiment. It is an expanded sectional view of the right end part of the illuminating device concerning Embodiment 1 shown in FIG. It is a disassembled perspective view which shows the illuminating device concerning Embodiment 2.
- FIG. It is sectional drawing which shows the illuminating device concerning Embodiment 2.
- FIG. 1 is a perspective view showing a lighting device according to a first embodiment. 1 is an exploded perspective view showing a lighting device according to Embodiment 1.
- each drawing is a schematic diagram, and the shape, size, ratio, and the like of each component such as a component shown in the drawing are not necessarily exactly illustrated.
- the side from which the light of the illumination device is mainly emitted (main emission direction side) is the front side, and the opposite side of the front side is the back side.
- FIG. 1 is a diagram for explaining how the lighting device according to the first embodiment is attached to a ceiling board.
- the illuminating device 1 concerning 1 aspect of this invention is an illuminating device attached using the embedding hole formed in the ceiling.
- a part of the housing 10 is embedded in the embedded hole 2 a provided in the ceiling board (ceiling) 2.
- a heat radiating member 3 for radiating heat generated from a light emitting element or the like in the lighting device 1 to the outside of the device is provided on the back surface of the housing 10, and a leaf spring-like latching member is provided on a side surface of the heat radiating member 3. 4 is attached.
- the lighting device 1 is attached to the ceiling board 2 by hooking the hooking member 4 on the ceiling back surface 2 b of the ceiling board 2.
- the latch member 4 is not limited to a leaf spring. Moreover, the attachment method to the ceiling board 2 of the illuminating device 1 is not limited to the thing by the latching using the latching member 4, You may attach by screwing, adhesion
- a circuit unit 5 for lighting the lighting device 1 is disposed on the ceiling back surface 2 b of the ceiling plate 2, and the lighting device 1 is electrically connected to the circuit unit 5 via a power line 23.
- the circuit unit 5 is electrically connected to an external commercial AC power supply (not shown), and supplies a current input from the commercial AC power supply to the lighting device 1.
- the circuit unit 5 is required separately from the lighting device 1, but the lighting device according to the present invention may be a lighting device incorporating the circuit unit 5.
- FIG. 2 is a perspective view of the lighting device 1 according to the first embodiment.
- FIG. 3 is an exploded perspective view showing the lighting device 1 according to the first embodiment.
- FIG. 4 is a cross-sectional view illustrating the housing 10 according to the first embodiment.
- FIG. 5 is a cross-sectional view illustrating the lighting device 1 according to the first embodiment.
- FIG. 6 is an enlarged cross-sectional view of the right end portion of the lighting apparatus 1 according to the first embodiment shown in FIG.
- the lighting device 1 includes a housing 10, a light emitting module 20, a reflecting member 30, a light guide plate 40, a diffusion cover 50, and a heat radiating member 3.
- illustration is abbreviate
- the housing 10 is, for example, a housing made of aluminum die-casting, and includes an annular plate-shaped main body portion 12 and a ceiling surface (ceiling surface) 2 c of the main body portion 12. And a coronal portion 11 provided at the center of the face plate 16 facing (see FIG. 1).
- the crown-shaped portion 11 is a bottomed cylindrical shape having a disk-shaped top plate portion 13 and a cylindrical side wall portion 14 extending to the outer peripheral edge of the top plate portion 13, as shown in FIG. It has a space 18 inside. 4, 5, and 6, the range indicated by reference sign H ⁇ b> 11 is the range of the crown-shaped portion 11 in the direction perpendicular to the ceiling surface 2 c, and the range indicated by reference sign W ⁇ b> 11 is horizontal with respect to the ceiling surface 2 c. It is the range of the coronal part 11 in FIG.
- the range indicated by reference sign H2a is the range of the embedded hole 2a in the direction perpendicular to the ceiling surface 2c
- the range indicated by reference sign W2a is the range of the embedded hole 2a in the horizontal direction with respect to the ceiling surface 2c.
- the space 18 in the coronal portion 11 accommodates the light emitting module 20, a part of the reflecting member 30, and a part of the light guide plate 40. Specifically, in the space 18 in the crown 11, the light emitting module 20 in which the light emitting element 22 is disposed, a part of the reflecting member 30, the element row facing portion 44 of the light guide plate 40, and the first light of the light guide plate 40. A portion of the scattering portion 45, the second light scattering portion 46, the third light scattering portion 47, and the fourth light scattering portion 48 is accommodated.
- the light emitting module 20 including the light emitting element 22, a part of the reflecting member 30, the element row facing portion 44 of the light guide plate 40, and the first light scattering portion of the light guide plate 40. 45, the second light scattering portion 46, the third light scattering portion 47, and a portion of the fourth light scattering portion 48 are located in the embedded hole 2a above the ceiling surface 2c.
- the main body portion 12 is a remaining portion (remaining portion) other than the coronal portion 11 in the housing 10.
- the main body 12 includes an annular plate-like face plate 16 that is in contact with the ceiling plate 2 and a flange portion 17 that extends to the outer peripheral edge of the face plate 16.
- H12 is the range of the main body 12 in the direction perpendicular to the ceiling surface 2c
- W12 is the main body in the direction horizontal to the ceiling surface 2c. This is the range of the part 12.
- the range indicated by reference sign W12a is the outer peripheral edge portion 12a of the main body portion 12.
- the main body 12 projects downward from the ceiling surface 2c in a state where the housing 10 is attached to the ceiling. Further, the outer peripheral edge portion 12a of the main body portion 12 projects outward from the embedding hole 2a when the housing 10 is attached to the ceiling.
- a part of the reflecting member 30 and a part of the light guide plate 40 are accommodated in the space 19 in the main body 12. Specifically, in the space 19 in the main body portion 12, a part of the reflecting member 30, the inner ring portion 42, the outer ring portion 43, the first light scattering portion 45, the second light scattering portion 46, and the third light scattering. A portion 47 and a portion of the fourth light scattering portion 48 are housed.
- a part of the reflection member 30, the inner ring portion 42, the outer ring portion 43, the first light scattering portion 45, the second light scattering portion 46, and the third light scattering portion. 47 and a part of the fourth light scattering portion 48 are disposed below the ceiling surface 2c and protrude downward from the ceiling surface 2c.
- the casing 10 and the diffusion cover 50 are fixed to the flange portion 17 of the main body 12 with the side wall portion 52 of the diffusion cover 50 by, for example, adhesion or the like. Yes.
- the light emitting module 20 includes an annular plate-like substrate 21 and a plurality of light emitting elements 22 mounted on an element mounting surface 21 a which is one main surface of the substrate 21.
- the substrate 21 is placed and accommodated on the top plate portion 13 of the crown portion 11 of the housing 10. Accordingly, in a state where the lighting device 1 is attached to the ceiling, that is, in a state where the housing 10 is attached to the ceiling, the substrate 21 is in a space 18 of the housing 10 in a manner parallel to the ceiling surface (ceiling surface) 2c. Is housed inside.
- the aspect in which the substrate 21 is parallel to the ceiling surface (ceiling surface) 2c is not necessarily strictly parallel.
- the substrate 21 may be slightly inclined with respect to the ceiling surface 2c.
- the degree of the inclination is not particularly limited, but specifically, for example, it is 15 degrees or less.
- the substrate 21 does not necessarily have to be directly placed on the top plate portion 13.
- an adhesive, an adhesive sheet, an electrically insulating sheet, or the like may be interposed between the substrate 21 and the top plate portion 13.
- the outer diameter of the light emitting module 20 is substantially the same as the inner diameter of the crown-shaped portion 11 of the housing 10, and the positioning of the light-emitting module 20 is completed only by housing the light-emitting module 20 in the space 18 in the crown-shaped portion 11.
- Each light emitting element 22 is arranged in an annular shape on the element mounting surface 21 a of the substrate 21 in a state in which the main emission direction of each light is directed to the light guide plate 40.
- the substrate 21 has, for example, a two-layer structure of an insulating layer made of a ceramic substrate or a heat conductive resin and a metal layer made of an aluminum plate or the like.
- a wiring pattern (not shown) is formed on the substrate 21, and each light emitting element 22 is electrically connected to the power supply line 23 through the wiring pattern and the connector 24.
- the element mounting surface 21a of the substrate 21 is a reflecting surface for efficiently reflecting light toward the light guide plate 40 side.
- the light emitting element 22 is, for example, an LED, and is mounted face-up on the element mounting surface 21a of the substrate 21 using COB (Chip on Board) technology.
- the light emitting element according to the present invention may be, for example, an LD (laser diode) or an EL element (electric luminescence element).
- the SMD (Surface Mount Device) type light emitting element according to the present invention may be mounted on a substrate.
- the heat radiating member 3 is attached to the upper surface 13 a of the crown-shaped portion 11 (also the upper surface of the top plate portion 13).
- the heat dissipating member 3 is made of, for example, copper or aluminum, and has a role of dissipating heat generated by the light emitting element 22 or the like mounted on the substrate 21 or the element mounting surface 21a constituting the light emitting module 20 to the outside of the apparatus. .
- the heat radiating member 3 is arrange
- the heat radiating member 3 is located in the embedding hole 2a in a state where the housing 10 is attached to the ceiling. For this reason, even if the heat radiating member 3 is provided, the amount of protrusion from the ceiling surface does not increase and does not disturb the residents in the room. Therefore, the heat radiating member 3 has a high heat radiating member, that is, a large volume and a large heat capacity. A heat radiating member can be employed.
- the heat dissipating member 3 since the heat dissipating member 3 is located in the embedding hole 2 a together with the light emitting module 20, it can be arranged at a position close to the arrangement position of the light emitting module 20. For this reason, the heat generated in the light emitting module 20 that is the main heat source of the lighting device 1 can be efficiently radiated to the outside of the device.
- the reflection member 30 includes a circular plate-like inner reflection member 30 a and an annular plate-like outer reflection member 30 b disposed so as to surround the outer periphery of the inner reflection member 30 a, and is emitted from the light emitting element 22. It has the role of reflecting the incident light and making it incident on the light guide plate 40. As shown in FIG. 5, the reflecting member 30 is disposed in the space 18 in the crown-shaped portion 11. Specifically, the inner reflection member 30a is disposed on the back side of the ring inner side portion 42 of the light guide plate 40, and the outer reflection member 30b is disposed on the back side of the ring outer side portion 43 of the light guide plate 40, and is reflected. The entire member 30 is disposed on the back side of the light guide plate 40 so as to avoid the light emitting element 22.
- the outer diameter of the outer reflecting member 30b is substantially the same as the inner diameter of the crown-shaped portion 11 of the casing 10, and the positioning of the outer reflecting member 30b is completed only by housing the outer reflecting member 30b in the space 18 in the crown-shaped portion 11.
- a material having a high reflectance such as a highly reflecting polycarbonate resin, a highly reflecting nylon resin, a highly reflecting polybutylene terephthalate resin, or a highly reflecting foamed resin is optimal.
- the surface on the front side of the inner reflecting member 30a is composed of a first light reflecting surface 31a and a second light reflecting surface 32a.
- the first light reflecting surface 31 a faces the back surface 42 b of the ring inner portion 42 of the light guide plate 40 and plays a role of reflecting light leaking from the ring inner portion 42 to the back side and returning it to the ring inner portion 42.
- the second light reflecting surface 32a faces the surface 46b on the back side of the second light scattering portion 46 of the annular portion 41 of the light guide plate 40, and reflects the light leaking from the second light scattering portion 46 to the back side. It plays the role of returning to the light scattering portion 46.
- the surface on the front side of the outer reflecting member 30b is composed of a first light reflecting surface 31b and a second light reflecting surface 32b.
- the first light reflecting surface 31 b faces the back surface 43 b of the outer ring portion 43 of the light guide plate 40, and plays a role of reflecting light leaking from the outer ring portion 43 to the back side and returning it to the outer ring portion 43.
- the second light reflecting surface 32b is opposed to the back surface 48b of the fourth light scattering portion 48 of the annular portion 41 of the light guide plate 40, and reflects the light leaking from the fourth light scattering portion 48 to the back side. It plays the role of returning to the light scattering portion 48.
- the inner reflecting member 30a and the outer reflecting member 30b are spaced apart from each other on the back side of the light guide plate 40 by the outer peripheral surface 33a of the inner reflecting member 30a and the inner peripheral surface 33b of the outer reflecting member 30b. They are arranged in a state of being opposed to each other.
- the outer peripheral surface 33a of the inner reflective member 30a and the inner peripheral surface 33b of the outer reflective member 30b are respectively light reflecting surfaces.
- the light guide plate 40 has a disc shape as a whole, and has an annular portion (introduction portion) 41 formed in an annular shape along the element row composed of the light emitting elements 22, and the annular portion 41. It is composed of a disc-shaped inner ring portion 42 connected to the inner side of the ring and an annular outer ring portion 43 connected to the outer ring side of the annular portion 41. These three parts, the annular part 41, the inner ring part 42 and the outer ring part 43, are integrally formed.
- a material of the light guide plate 40 a material having good light guide properties such as acrylic resin, polycarbonate resin, polystyrene resin, and glass is suitable.
- the annular portion 41 includes an element array facing portion 44, a first light scattering portion 45, a second light scattering portion 46, a third light scattering portion 47, and a fourth light scattering portion 48, and a light emitting element is provided in the light guide plate 40. It has a role of introducing light emitted from the line 22.
- the element row facing portion 44 is a portion facing the element row formed of the plurality of light emitting elements 22 of the light guide plate 40 and has an annular shape.
- the first light scattering portion 45 is in an annular shape along the element row facing portion 44 located inside the ring of the element row facing portion 44.
- the second light scattering portion 46 is in an annular shape along the first light scattering portion 45 located inside the ring of the first light scattering portion 45.
- the first light scattering portion 45 and the second light scattering portion 46 constitute an inner reflection portion 41a.
- the third light scattering portion 47 has an annular shape that is located outside the element array facing portion 44 and is located along the element array facing portion 44.
- the fourth light scattering portion 48 has an annular shape along the third light scattering portion 47 located outside the ring of the third light scattering portion 47.
- the third light scattering portion 47 and the second light scattering portion 48 constitute an outer reflection portion 41b.
- the range indicated by reference sign W41 is the annular portion 41
- the range indicated by reference sign W42 is the inner ring portion 42
- the range indicated by reference sign W43 is the outer ring portion 43.
- the outer peripheral edge portion of the outer ring portion 43 is positioned by being sandwiched between the face plate 16 of the main body portion 12 and the outer peripheral edge portion 51a of the diffusion cover 50 while being placed on the face plate 16 of the main body portion 12. It is fixed.
- the range indicated by the symbol W44 is the element array facing portion 44
- the range indicated by the symbol W45 is the first light scattering portion 45
- the range indicated by the symbol W46 is the second light scattering portion 46
- the symbol W47 The range indicated by is the third light scattering portion 47
- the range indicated by the symbol W48 is the fourth light scattering portion.
- the front surface 40 a of the light guide plate 40 includes a front surface 41 c of the annular portion 41, a front surface 42 a of the annular inner portion 42, and a front surface 43 a of the annular outer portion 43. Consists of.
- the front side surface 41c of the annular portion 41 includes a front side surface 44a of the element array facing portion 44, a front side surface 41aa of the inner reflective portion 41a, and a front side surface 41ba of the outer reflective portion 41b.
- a front surface 41aa of the inner reflective portion 41a is a reflective surface, and is a first light scattering region 45a that is a front surface of the first light scattering portion 45 and a front surface of the second light scattering portion 46.
- the front surface 41ba of the outer reflective portion 41b is also a reflective surface, and is a third light scattering region 47a that is a front surface of the third light scattering portion 47 and a front surface of the fourth light scattering portion 48. 4 light scattering regions 48a.
- the space 19 in the main body 12 accommodates the entire ring inner portion 42 and the entire ring outer portion 43, as well as the second light scattering portion 46 and the fourth light scattering portion 48.
- the space 18 in the crown portion 11 accommodates the element array facing portion 44, the first light scattering portion 45, and the third light scattering portion 47 of the light guide plate 40.
- the back surface 40 b of the light guide plate 40 includes a back surface 41 d of the annular portion 41, a back surface 42 b of the ring inner portion 42, and a back surface 43 b of the ring outer portion 43. Consists of.
- the back surface 41d of the annular portion 41 includes a back surface 44b of the element array facing portion 44, a back surface 45b of the first light scattering portion 45, a back surface 46b of the second light scattering portion 46, The back surface 47 b of the third light scattering portion 47 and the back surface 48 b of the fourth light scattering portion 48 are configured.
- the front surface 41 c of the annular portion 41 is a reflection surface for reflecting the light of the light emitting element 22 incident on the annular portion 41 from the back side toward the inner ring portion 42 or the outer ring portion 43.
- the shape of the front side surface 41 c of the annular portion 41 is a substantially V-shape folded back so that the center protrudes to the back side.
- the “longitudinal section” refers to a section cut through a virtual plane that passes through the center of the light guide plate 40 in a plan view and is orthogonal to the front surface 42 a of the ring inner portion 42 that is a flat plate portion of the light guide plate 40. Point to. The same applies to the “longitudinal section” of the light guide plate in the second embodiment.
- the folded part has an R shape that swells on the back side.
- both sides of the folded portion are each formed in a substantially arc shape that swells to the front side.
- the surface 41c on the front side of the annular portion 41 is subjected to light scattering treatment.
- the first light scattering region 45a, the second light scattering region 46a, the third light scattering region 47a, and the fourth light scattering region 48a are provided with recesses 45c, 46c, 47c, and 48c, respectively, as light scattering processing. It has been.
- a plurality of recesses 45c, 46c, 47c, and 48c are provided. Since the light scattering process is performed in this way, the light incident on the front side surface 41c from the inside of the annular portion 41 is not totally reflected, but a part thereof is scattered by the recesses 45c, 46c, 47c, and 48c. Then, the light is emitted to the outside of the light guide plate 40. Note that no concave portion is provided on the front surface 44 a of the element array facing portion 44.
- the recesses 45c, 46c, 47c, and 48c are substantially hemispherical in shape and all have the same size.
- the shape and size of the recess according to the present invention are arbitrary, and any shape can be used as long as the light scattering effect can be obtained.
- the shape may be, for example, a substantially conical shape or a substantially truncated cone shape.
- Part of the back surface 41 d of the annular portion 41 is an incident surface on which light from the light emitting element 22 is incident.
- the back surface 44b of the element array facing portion 44 corresponds to the incident surface.
- a surface 44b on the back side of the element array facing portion 44 faces the element array composed of the plurality of light emitting elements 22 and has an annular shape.
- the entire surface 41 d on the back side of the annular portion 41 also functions as an incident surface for the light reflected by the element mounting surface 21 a of the substrate 21 to enter the annular portion 41.
- the front surface 42 a of the inner ring portion 42 is a light emitting surface from which a part of the light incident on the inner ring portion 42 is emitted.
- the surface 43 a on the front side of the outer ring portion 43 is a light emitting surface from which a part of the light incident on the outer ring portion 43 is emitted.
- a plurality of recesses 42c are provided on the back surface 42b of the ring inner portion 42 as a light scattering process. Therefore, the light incident on the recess 42c in the ring inner portion 42 becomes scattered light and is emitted from the front surface 42a.
- the number of the recesses 42c per unit area increases toward the center of the back side surface 42b of the ring inner side portion 42, so that light is uniformly emitted from the entire front side surface 42a. .
- a plurality of recesses 43 c are provided on the back surface 43 b of the outer ring portion 43 as a light scattering process. Therefore, the light incident on the concave portion 43c in the outer ring portion 43 becomes scattered light and is emitted from the front surface 43a.
- the number of the recesses 43c per unit area increases toward the outer peripheral edge of the back surface 43b of the outer ring portion 43, so that light is uniformly emitted from the entire front surface 43a. Yes.
- the outer peripheral surface 43 d of the outer ring portion 43 is subjected to a light reflection process so that light does not leak from the outer peripheral surface 43 d to the outside of the light guide plate 40.
- the light traveling in the outer ring portion 43 and reaching the outer circumferential surface 43d is reflected by the outer circumferential surface 43d and returns to the annular portion 41 without returning from the outer ring portion 43.
- the light-scattering process performed to the ring inner side part 42 and the ring outer side part 43 is not limited above, but is arbitrary.
- a convex portion instead of the concave portion may be provided as the light scattering process, or both the concave portion and the convex portion may be provided.
- the light scattering treatment may be performed not on the back surfaces 42b and 43b but on the front surfaces 42a and 43a, or may be performed on both the back surfaces 42b and 43b and the front surfaces 42a and 43a. good.
- it is preferable that light is uniformly emitted from the entire front surface 42 a of the ring inner portion 42 and the entire front surface 43 a of the ring outer portion 43.
- the element row facing portion 44 is disposed in the space 18 in the crown portion 11. Further, the first light scattering portion 45, the second light scattering portion 46, the third light scattering portion 47, and the fourth light scattering portion 48 are disposed over the space 18 in the crown-shaped portion 11 and the space 19 in the main body portion 12. ing. Further, the ring inner portion 42 and the ring outer portion 43 are disposed in the space 19 in the main body portion 12.
- the ring inner portion 42 and the ring for emitting the light reflected from the reflection surfaces of the first light scattering portion 45, the second light scattering portion 46, the third light scattering portion 47, and the fourth light scattering portion 48. Since only the outer portion 43 is disposed in the space 19 in the main body portion 12 projecting outward (floor side) from the ceiling surface 2c (see FIG. 1) in a state where the lighting device 1 is attached to the ceiling, While suppressing the amount of protrusion from the ceiling surface, it is possible to ensure the function as a lighting device that emits light using a light guide plate.
- the diffusion cover 50 is formed of a translucent material such as silicone resin, acrylic resin, polycarbonate resin, or glass, for example. Is taken out.
- the diffusion cover 50 includes a dome-shaped main body 51 that covers the light guide plate 40, and a side wall 52 that extends from the peripheral edge of the main body 51 toward the back side. As shown in FIGS. 5 and 6, the side wall 52 is fixed to the flange portion 17 of the main body 12 of the housing 10.
- the main body 51 is subjected to a light scattering process, and light emitted from the light guide plate 40 becomes scattered light when passing through the main body 51. Therefore, the luminance unevenness is further reduced.
- the housing 10 includes the face plate 16 facing the ceiling surface 2c, and a recess in which a part of the face plate 16 is recessed into the ceiling plate 2 side.
- the body 10 In the state where the body 10 is attached to the ceiling plate 2, the body 10 has a crown-shaped portion 11 that is immersed in the embedding hole 2 a.
- the light emitting module 20 is disposed in the space 18 in the crown 11.
- an inner ring portion (inner ring emitting portion) 42 which is a portion of the light guide plate 40 from which light is emitted (outgoing portion), and an outer ring surface.
- a portion (outer ring emission portion) 43 is arranged.
- the light emitting module 20 including the light emitting element 22 is disposed in the embedded hole 2a on the upper side of the ceiling surface 2c, and the ring inner portion 42 and the ring outer portion 43 that are emission portions of the light guide plate 40 are below the ceiling surface 2c. Since the light emitting element and the light guide plate are vertically arranged so that the light emitting element and the light guide plate are vertically overlapped with each other, in the direct lighting system lighting device, while ensuring the brightness as the lighting device, the ceiling The amount of protrusion from the surface can be suppressed.
- FIG. 7 is an exploded perspective view showing the lighting apparatus 100 according to the second embodiment.
- FIG. 8 is a cross-sectional view illustrating the illumination device 100 according to the second embodiment.
- illustration is abbreviate
- the illuminating device 100 according to the second embodiment includes the illuminating device 1 according to the first embodiment in that the reflecting member 130 includes only the inner reflecting member and the light guide plate 140 does not include the outer ring portion. And very different. Since there are many points similar to the illumination device 1 according to the first embodiment, only the differences between the two will be described below, and the same reference numerals will be used for the common configurations, and description thereof will be omitted.
- the lighting device 100 includes a housing 10, a light emitting module 120, a reflecting member 130, a light guide plate 140, a diffusion cover 50, and a heat radiating member 3.
- the housing 10 of the lighting device 100 is the same as the housing 10 of the lighting device 1 according to the first embodiment.
- a part of the light emitting module 120, the reflecting member 130, and the light guide plate 140 is accommodated in the space 18 in the crown portion 11.
- the space 18 in the crown portion 11 accommodates the light emitting module 120 in which the light emitting element 22 is disposed, the reflecting member 130, and part of the element row facing portion 144 and the inner reflecting portion 141 a of the light guide plate 140. ing. That is, in a state where the lighting device 100 is attached to the ceiling, the light emitting module 120 in which the light emitting elements 22 are arranged, the reflecting member 130, and the element row facing portion 144 and the inner reflecting portion 141a of the light guide plate 140 are part of the ceiling. It is located in the embedding hole 2a above the surface.
- the remaining part of the light guide plate 140 is accommodated in the space 19 in the main body 12.
- the space 19 in the main body 12 accommodates a part of the inner ring portion 142 of the light guide plate 140 and the inner reflection portion 141a. That is, a part of the light guide plate 140 is accommodated in the space 19 in the main body 12 in a state where the lighting device 100 is attached to the ceiling.
- the ring inner portion 142 and a part of the inner reflection portion 141a are disposed in the space 19 in the main body portion 12 located below (the floor side) from the ceiling surface.
- the light emitting module 120 includes an annular plate-shaped substrate 121 and a plurality of light emitting elements 22 mounted on an element mounting surface 121a which is one main surface of the substrate 121.
- the substrate 121 is placed and accommodated on the top plate portion 13 of the crown portion 11 of the housing 10. Therefore, in a state where the lighting device 100 is attached to the ceiling, that is, in a state where the housing 10 is attached to the ceiling, the substrate 21 is accommodated in the space 18 of the housing 10 in a manner parallel to the ceiling surface 2c. ing.
- the outer diameter of the light emitting module 120 is substantially the same as the inner diameter of the crown-shaped portion 11 of the housing 10, and the positioning of the light-emitting module 20 is completed only by housing the light-emitting module 120 in the space 18 in the crown-shaped portion 11.
- the respective light emitting elements 22 are arranged in an annular shape on the element mounting surface 121a of the substrate 121 in a state in which the respective main emission directions are directed toward the light guide plate 140.
- the substrate 121 is substantially the same as the substrate 21 according to the first embodiment except that the mounting position of the light emitting element 22 is installed on the outer peripheral side.
- the heat dissipation member 3 of the lighting device 100 is the same as the heat dissipation member of the lighting device 1 according to the first embodiment.
- the reflecting member 130 is composed only of the inner reflecting member, and is disposed in the space 18 in the crown-shaped portion 11 as shown in FIG. Specifically, the reflecting member 130 is disposed in the vicinity of the light guide plate 140 on the back side of the ring inner portion 142 of the light guide plate 140 so as to avoid the light emitting element 22.
- the first light reflecting surface 131 a of the reflecting member 130 faces the back surface of the inner ring portion 142 of the light guide plate 140, and plays a role of reflecting light leaking from the inner ring portion 142 to the rear side and returning it to the inner ring portion 142. Fulfill.
- the second light reflecting surface 132a is opposed to the surface on the back side of the second light scattering portion 146 of the annular portion 141 of the light guide plate 140, and reflects the light leaking from the second light scattering portion 146 to the back side to generate the second light. It plays the role of returning to the scattering portion 146.
- the first light reflecting surface 131a is in surface contact with the back surface of the ring inner portion 142
- the second light reflecting surface 132a is in surface contact with the back surface of the second light scattering portion 146.
- the light guide plate 140 is different from the light guide plate 40 according to the first embodiment in that the light guide plate 140 does not include an outer ring portion.
- the light guide plate 140 has a circular plate shape, and has an annular portion (introduction portion) 141 formed in an annular shape along an element row composed of a plurality of light emitting elements 22, and an annular portion 141. It is comprised with the ring inner side part 142 which is the disk shape enclosed by the outer periphery.
- the annular portion 141 and the ring inner portion 142 are integrally formed.
- the annular portion 141 includes an element array facing portion 144, a first light scattering portion 145, and a second light scattering portion 146.
- the first light scattering portion 145 and the second light scattering portion 146 constitute an inner reflection portion 141a.
- the element row facing portion 144 is a portion facing the element row formed of the plurality of light emitting elements 22 and has an annular shape.
- the first light scattering portion 145 is located inside the ring of the element row facing portion 144 and has an annular shape along the element row facing portion 144.
- the second light scattering portion 146 is located inside the ring of the first light scattering portion 145 and has an annular shape along the first light scattering portion 145.
- the shape of the surface 141c on the front side of the annular portion 141 is a substantially arc shape that swells to the front side.
- the front surface 141 c of the annular portion 141 is a reflection surface for reflecting light from the light emitting element 22 incident on the annular portion 141 from the back side to the annular inner portion 142.
- the back surface of the element array facing portion 144 corresponds to the incident surface.
- the back surface 144 b of the element array facing portion 144 has an annular shape facing the element array composed of the plurality of light emitting elements 22.
- the entire surface 141 d on the back side of the annular portion 141 also functions as an incident surface for the light reflected by the element mounting surface 121 a of the substrate 121 to enter the annular portion 141.
- the light scattering process similar to that of the light guide plate 40 according to the first embodiment is performed on the front surface 141c of the annular portion 141.
- the light emitted from the light emitting element 22 can be introduced into the annular inner portion 142 that is disk-shaped and surrounded by the annular portion 141.
- the configuration of the ring inner portion 142 is substantially the same as that of the ring inner portion 42 according to the first embodiment.
- the diffusion cover 50 of the lighting device 100 is the same as the diffusion cover of the lighting device 1 according to the first embodiment.
- the light emitting module 120 is arranged in the space 18 in the crown portion 11.
- an annular inner portion 142 that is a light emission portion of the light guide plate 140 is disposed in the space 19 in the main body portion 12 that protrudes downward from the ceiling surface.
- the light emitting module 120 including the light emitting element 22 is disposed in the embedded hole 2a above the ceiling surface 2c, and the ring inner portion 142, which is a light emitting portion of the light guide plate 140, is disposed below the ceiling surface 2c.
- the brightness from the ceiling surface is ensured while ensuring the brightness as the illumination device.
- the amount of protrusion can be suppressed.
- the element row facing portion 44 of the light guide plate is disposed in the space 18 in the crown-shaped portion 11, and the ring inner portion 42 and the ring outer portion 43 of the light guide plate 40 are disposed in the main body portion 12.
- the present invention is not necessarily limited to this case. It suffices if the ring inner portion 42 and the ring outer portion 43, which are light emission portions of the light guide plate, are arranged in the space 19 in the main body portion 12.
- the annular portion 41 of the light guide plate 40 may be disposed in the space 19 in the main body portion 12.
- the reflecting member 30 is disposed in the space 18 in the coronal portion 11, but the present invention is not necessarily limited to this case. In the lighting device according to one embodiment of the present invention, it is sufficient that at least a part of the reflecting plate is disposed in the space 18 in the coronal portion 11.
- the reflecting member 30 may be disposed over the space 18 in the crown-shaped portion 11 and the space 19 in the main body portion 12.
- the light guide plate 40 has a circular plate shape, but the present invention is not necessarily limited to this case.
- the light guide plate 40 may be a polygonal plate shape such as a quadrangular plate shape, a hexagonal plate shape, an octagonal plate shape, or the like.
- the annular portion 41, the annular inner portion 42, the annular outer portion 43, the element array facing portion 44, the first light scattering portion 45, the second light scattering portion 46, the third light scattering portion 47, and the fourth light scattering portion 48 are also arbitrary according to the shape of the light guide plate 40.
- the shape of the coronal portion 11 is not limited to a bottomed cylindrical shape.
- the shape of the crown portion 11 is arbitrary depending on the arrangement of the light emitting elements 22 and the shape of the substrate 21.
- the shape of the crown-shaped portion 11 may be a bottomed polygonal cylinder such as a bottomed square cylinder, a bottomed hexagonal cylinder, or a bottomed octagonal cylinder.
- the lighting device according to the present embodiment is not limited to the structure and shape shown in the above description and drawings, and the first lighting device projects downward from the ceiling surface when attached to the ceiling.
- Any structure that includes a casing (main body) and a second casing (crown) located in the embedding hole may be used.
- at least a part of the light guide plate, specifically, the light emission part of the light guide plate is disposed in the housing part in the first housing part (main body part), and the light emitting element has the main emission direction as the light guide plate. It suffices if it is disposed in the accommodating portion in the second casing (crown-shaped portion) in the state of being directed. Thereby, while ensuring sufficient brightness as an illuminating device, the illuminating device with little protrusion amount from a ceiling surface can be provided.
- the range W11 of the crown portion 11 in the horizontal direction with respect to the ceiling surface is designed to be smaller than the range W2a of the embedding hole 2a in the horizontal direction with respect to the ceiling surface. Yes. Thereby, a space 60 is formed between the side wall portion 14 of the crown-shaped portion 11 and the embedding hole 2a.
- the space 60 serves as a heat exhaust path, and the light emitting module. Heat generated from 20 etc. can be exhausted from the embedded hole 2a to the outside of the apparatus.
- the lighting device 1 is attached to the ceiling plate 2 by hooking the hanging member 4 on the ceiling back surface 2b of the ceiling plate 2. It is not necessarily limited to this case.
- the ceiling surface 2c of the ceiling plate 2 and a part of the face plate 16 of the main body 12 may be bonded using packing. By bonding using packing, a space is formed between the ceiling surface 2 c and the face plate 16 of the main body 12. This space functions as a heat exhaust path, and heat generated from the light emitting module 20 can be exhausted from the embedded hole 2a.
- the lighting device according to the present invention can be used for, for example, a lighting device that can be mounted using an embedding hole formed in a ceiling such as a downlight.
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Abstract
Description
[全体構成]
まず始めに、実施の形態1にかかる照明装置の全体構成について説明する。
図2は、実施の形態1にかかる照明装置1を示す斜視図である。図3は、実施の形態1にかかる照明装置1を示す分解斜視図である。図4は、実施の形態1にかかる筐体10を示す断面図である。図5は、実施の形態1にかかる照明装置1を示す断面図である。図6は、図5に示す実施の形態1にかかる照明装置1の右端部の拡大断面図である。図2~図6に示すように、照明装置1は、筐体10、発光モジュール20、反射部材30、導光板40、拡散カバー50、および放熱部材3を備える。なお、図3においては、放熱部材3については、図示を省略している。
図3と図4に示すように、筐体10は、例えば、アルミダイキャスト製の筐体であって、円環板状の本体部12と、当該本体部12の天井表面(天井面)2c(図1参照)に対面する面板16の中央部に設けられた冠状部11とを有する。
図3に戻って、発光モジュール20は、円環板状の基板21と、当該基板21の一方の主面である素子搭載面21aに搭載された複数の発光素子22とを有する。基板21は、筐体10の冠状部11の天板部分13上に載置され、収容されている。従って、照明装置1が天井に取り付けられた状態において、即ち、筐体10が天井に取り付けられた状態において、基板21は、天井表面(天井面)2cと平行な態様で筐体10の空間18内に収容されている。
図5に示すように、放熱部材3は、冠状部11の上面13a(天板部分13の上面でもある)に取り付けられている。放熱部材3は、例えば銅やアルミニウム等からなり、発光モジュール20を構成する基板21や素子搭載面21aに円環状に搭載された発光素子22等で発生した熱を装置外部へ放熱する役割を有する。
反射部材30は、円形板状の内側反射部材30aと、内側反射部材30aの外周を囲むように配置される円環板状の外側反射部材30bとで構成されており、発光素子22から出射された光を反射して導光板40に入射させる役割を有する。図5に示すように、反射部材30は、冠状部11内の空間18に配置されている。具体的には、内側反射部材30aは、導光板40の環内側部42の裏側に配置されており、外側反射部材30bは、導光板40の環外側部43の裏側に配置されており、反射部材30全体としては、発光素子22を避けるようにして導光板40の裏側に配置されている。
図3に示すように、導光板40は、全体として円板状であって、発光素子22からなる素子列に沿って円環状に形成された環状部(導入部分)41と、環状部41の環内側に連設された円板状の環内側部42と、環状部41の環外側に連設された円環状の環外側部43とで構成される。これら、環状部41、環内側部42および環外側部43の3つは一体に成形されている。導光板40の材料としては、アクリル樹脂、ポリカーボネート樹脂、ポリスチレン樹脂、ガラス等の導光性の良い材料が適している。
拡散カバー50は、例えば、シリコーン樹脂、アクリル樹脂、ポリカーボネート樹脂、ガラス等の透光性材料により形成されており、導光板40から出射された光は拡散カバー50を透過して照明装置1の外部へ取り出される。
図7は、第2の実施形態に係る照明装置100を示す分解斜視図である。図8は、実施の形態2にかかる照明装置100を示す断面図である。なお、図7においては、放熱部材3については、図示を省略している。
図7および図8に示すように、照明装置100の筐体10は、実施の形態1にかかる照明装置1の筐体10と同様のものである。
発光モジュール120は、円環板状の基板121と、当該基板121の一方の主面である素子搭載面121aに搭載された複数の発光素子22とを有する。基板121は、筐体10の冠状部11の天板部分13上に載置され、収容されている。従って、照明装置100が天井に取り付けられた状態において、即ち、筐体10が天井に取り付けられた状態において、基板21は、天井表面2cと平行な態様で筐体10の空間18内に収容されている。発光モジュール120の外径は筐体10の冠状部11の内径と略同じであり、発光モジュール120を冠状部11内の空間18に収容するだけで発光モジュール20の位置決めが完了する。各発光素子22は、それぞれの主出射方向を導光板140に向けた状態で、基板121の素子搭載面121aに円環状に配列されている。基板121は、実施の形態1にかかる基板21と比較して、発光素子22の搭載位置がより外周側に設置されている点を除いて略同様である。
図8に示すように、照明装置100の放熱部材3は、実施の形態1にかかる照明装置1の放熱部材と同様のものである。
反射部材130は、内側反射部材だけで構成されており、図8に示すように、冠状部11内の空間18に配置されている。具体的には、反射部材130は、導光板140の環内側部142の裏側に、発光素子22を避けるようにして、導光板140に対して近接配置されている。
導光板140が環外側部を備えていない点において、第1の実施の形態にかかる導光板40と異なる。
図7および図8に示すように、照明装置100の拡散カバー50は、実施の形態1にかかる照明装置1の拡散カバーと同様のものである。
なお、上記の実施の形態に基づいて説明してきたが、本発明は上記の実施の形態に限定されないことはもちろんである。以下のような場合も本発明に含まれる。
2 天井板(天井)
2c 天井表面(天井面)
3 放熱部材
4 掛止部材
10 筐体
11 冠状部
12 本体部
12a 外周縁部
16 面板
18、19 空間
20、120 発光モジュール
21、121 基板
22 発光素子
30、130 反射部材
40、140 導光板
41、141 環状部(導入部分)
42、142 環内側部(環内出射部分)
43 環外側部(環外出射部分)
44、144 素子列対向部分
50 拡散カバー
Claims (8)
- 天井に形成された埋込穴を利用して取り着けられる照明装置であって、
少なくとも1つの発光素子と、
導光板と、
天井面に対面する面板および、前記面板の一部に設けられ、前記面板から前記天井側に凹入した形状の冠状部を有し、前記発光素子および前記導光板を収容する筐体とを備え、
前記筐体が前記天井に取着された状態において、前記冠状部は、前記埋込穴に没入し、前記筐体の前記冠状部以外の残部は、前記埋込穴の外部に位置しており、
前記発光素子は、前記冠状部の内部空間に配置され、
前記導光板は、前記発光素子を覆う状態で前記残部の少なくとも一部に配置されている
照明装置。 - 前記残部の外周縁部は、前記筐体が前記天井に取着された状態において
前記埋込穴よりも外側へ張り出している
請求項1に記載の照明装置。 - 前記発光素子で発生した熱を装置外部へ放熱するための放熱部材をさらに備え、
前記放熱部材は、前記冠状部の上面に取り付けられ、前記筐体が前記天井に取着された状態において前記埋込穴に没入している
請求項1に記載の照明装置。 - 前記導光板は、
前記発光素子から出射された光が入射する入射面と前記入射面から入射した光を反射させる反射面とを有する導入部分と、
前記導入部分と連続しており、前記反射面で反射した光を出射させる出射面を有する出射部分とを備え、
前記導光板のうち少なくとも前記出射部分は、前記筐体が前記天井に取着された状態において前記天井面より下方に位置する部分に配置されている
請求項1に記載の照明装置。 - 前記発光素子は、前記筐体が前記天井に取着された状態において、前記天井面と平行な態様で前記筐体内に収容された基板上に環状に複数個配置され、
前記導入部分は、前記複数の発光素子からなる環に沿って環状に形成され、
前記出射部分は、前記導入部分の環内側に位置する環内出射部分と、前記導入部分の環外側に位置する環外出射部分とで構成される
請求項4に記載の照明装置。 - 前記筐体の前記天井面とは反対側に、前記導光板を覆うように取り付けられ、前記導光板から出射された光を拡散する拡散カバーをさらに備える
請求項1に記載の照明装置。 - 前記発光素子から出射された光を反射して前記導光板に入射させる反射面を有する反射部材をさらに備える
請求項1に記載の照明装置。 - 前記反射部材は、前記反射面と前記導光板の裏側の面とが対向した状態で、その少なくとも一部が前記冠状部の内部空間に配置される
請求項7に記載の照明装置。
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CN201390000690.XU CN204534162U (zh) | 2012-11-05 | 2013-10-25 | 照明装置 |
DE112013005283.0T DE112013005283T8 (de) | 2012-11-05 | 2013-10-25 | Beleuchtungsvorrichtung |
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JP2012-243576 | 2012-11-05 | ||
JP2012243576A JP6025041B2 (ja) | 2012-11-05 | 2012-11-05 | 照明装置 |
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JP2019149273A (ja) * | 2018-02-27 | 2019-09-05 | パナソニックIpマネジメント株式会社 | 照明器具 |
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JP7029668B2 (ja) * | 2018-02-27 | 2022-03-04 | パナソニックIpマネジメント株式会社 | 照明器具 |
JP7029669B2 (ja) * | 2018-02-27 | 2022-03-04 | パナソニックIpマネジメント株式会社 | 照明器具 |
JP7475774B2 (ja) | 2019-05-09 | 2024-04-30 | コイズミ照明株式会社 | 照明器具 |
JP2021112816A (ja) * | 2020-01-20 | 2021-08-05 | 株式会社マキタ | 電動作業機、照明アタッチメント、及び電動作業機から光を放射する方法 |
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JP2009104923A (ja) * | 2007-10-24 | 2009-05-14 | Toshiba Lighting & Technology Corp | 照明装置 |
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2012
- 2012-11-05 JP JP2012243576A patent/JP6025041B2/ja active Active
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2013
- 2013-10-25 DE DE112013005283.0T patent/DE112013005283T8/de not_active Expired - Fee Related
- 2013-10-25 CN CN201390000690.XU patent/CN204534162U/zh not_active Expired - Fee Related
- 2013-10-25 WO PCT/JP2013/006329 patent/WO2014068932A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012182152A (ja) * | 2006-03-21 | 2012-09-20 | Semiconductor Energy Lab Co Ltd | 照明装置、表示装置 |
JP2009104923A (ja) * | 2007-10-24 | 2009-05-14 | Toshiba Lighting & Technology Corp | 照明装置 |
JP2012028127A (ja) * | 2010-07-22 | 2012-02-09 | Panasonic Electric Works Co Ltd | レンズおよびレンズを備えた照明器具 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019149273A (ja) * | 2018-02-27 | 2019-09-05 | パナソニックIpマネジメント株式会社 | 照明器具 |
JP7122600B2 (ja) | 2018-02-27 | 2022-08-22 | パナソニックIpマネジメント株式会社 | 照明器具 |
Also Published As
Publication number | Publication date |
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CN204534162U (zh) | 2015-08-05 |
JP6025041B2 (ja) | 2016-11-16 |
JP2014093216A (ja) | 2014-05-19 |
DE112013005283T5 (de) | 2015-08-13 |
DE112013005283T8 (de) | 2015-10-01 |
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