JP2016189285A - Light source unit and lighting apparatus using the same - Google Patents

Abstract

An object of the present invention is to make it difficult to reduce the irradiation efficiency to an illumination space while reducing glare. A cover is formed in a box shape by a front surface portion facing the light source and a side surface portion 601 protruding from the periphery of the front surface portion 600 in a direction intersecting the front surface portion and toward the light source side so as to cover the light source. Placed in. Further, the cover 6 has a first wrinkle 6002 formed on the inner surface of the front surface portion 600 and a second wrinkle on the inner surface of the side surface portion 601 so that the light diffusibility of the front surface portion 600 is higher than the side surface portion 601. 6011 is formed. [Selection] Figure 7

Description

  The present invention relates to a light source unit and a lighting fixture using the same, and more particularly to a light source unit that illuminates an illumination space from above and a lighting fixture using the same.

  2. Description of the Related Art Conventionally, there is provided a so-called high ceiling lighting fixture that is installed in a building with a high ceiling such as a gymnasium or a hall and illuminates an illumination space from above (see, for example, Patent Document 1). The lighting fixture described in Patent Document 1 includes a fixture main body, four lamps, a power supply block, a mounting bracket, and the like.

  The lamp includes a lamp body, a light source block, a light distribution block, and the like. The light source block includes a light source unit, a power supply line, a mounting spring, an insulating sheet, and the like. The light source unit includes a ceramic substrate, a light source formed on the surface of the substrate, and a receptacle connector mounted on the surface of the substrate. The light source is composed of a plurality of light emitting diode chips mounted on a substrate and a sealing member made of a synthetic resin having a light-transmitting property and mixed with a fluorescent material.

  The light distribution block includes a reflective member, a light transmissive panel, and a waterproof member. In the reflecting member, a reflecting portion formed in a truncated cone shape having both ends opened and an annular outer flange portion projecting outward from an opening edge on the exit side of the reflecting portion are integrally formed of a metal plate material. The The translucent panel is formed in a disc shape from a translucent material such as acrylic resin, polycarbonate resin, or glass.

  In the instrument body, a circular bottom plate, a peripheral wall projecting upward from the periphery of the bottom plate, a pair of mounting bases to which mounting brackets are attached, and the like are integrally formed of aluminum or an aluminum alloy. In the bottom plate of the instrument body, four window holes are penetrated so as to be arranged in the circumferential direction of the bottom plate. The four lamps are attached to the bottom plate of the instrument body so as to close the window hole and irradiate light downward through the window hole.

JP 2014-26804 A

  When a light-emitting diode chip with strong directivity is used as a light source as in the lighting apparatus described in Patent Document 1, glare (glare) may be felt when a user of the building looks directly at the lighting apparatus. Therefore, in such a lighting device for a high ceiling, a diffusion panel for reducing glare can be retrofitted.

  However, when the diffuser panel is attached to a lighting fixture, glare can be reduced by the diffuser panel, but a part of the light transmitted through the translucent panel is blocked by the peripheral part of the diffuser panel, resulting in the illumination space. Irradiation efficiency may be reduced.

  In addition, the diffusion panel is a structure that is attached with a gap between the light transmissive panel and, therefore, even when dust or the like accumulates in the gap, part of the light transmitted through the light transmissive panel is dust or the like. There is a possibility that the illumination efficiency to the illumination space is reduced.

  This invention is made | formed in view of the said problem, and it aims at providing the light source unit which made it difficult to reduce the irradiation efficiency to illumination space, and a lighting fixture using the same, reducing a glare.

  The light source unit of the present invention is composed of a light source and a light-transmitting material, and a front surface portion facing the light source and a side surface portion protruding from the periphery of the front surface portion to the light source side in a direction intersecting the front surface portion. And a cover arranged to cover the light source, and the cover is formed on the inner surface of the front part so that the light diffusibility of the front part is higher than that of the side part. A first wrinkle is formed, and a second wrinkle is formed on the inner surface of the side surface portion.

  The lighting fixture of the present invention includes the above-described light source unit and a power supply unit that supplies power to the light source unit.

  The light source unit of the present invention can reduce the irradiation efficiency to the illumination space while reducing the glare.

  The lighting fixture of this invention can make it difficult to reduce the irradiation efficiency to illumination space, reducing a glare.

It is a whole perspective view of the lighting fixture which concerns on embodiment of this invention. It is another whole perspective view of the lighting fixture which concerns on embodiment of this invention. It is a disassembled perspective view of the light source unit which concerns on embodiment of this invention. It is another disassembled perspective view of the light source unit which concerns on embodiment of this invention. 1 is an overall perspective view of a light source unit according to an embodiment of the present invention. 6A is a front view of a cover used in the light source unit according to the embodiment of the present invention, FIG. 6B is a right side view, and FIG. 6C is a bottom view. FIG. 7A is a cross-sectional view of a cover used in the light source unit according to the embodiment of the present invention, and FIG.

  A light source unit 1 and a lighting fixture 10 according to an embodiment of the present invention will be specifically described with reference to the drawings. However, the configuration described below is merely an example of the present invention, and the present invention is not limited to the following embodiment. Therefore, various modifications other than this embodiment can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  In the following description, unless otherwise specified, the vertical, horizontal, and front-rear directions are defined in FIG. Therefore, in this embodiment, the direction in which the light source units 1 are arranged is the front-rear direction, the direction in which the heat radiating plates 32 of the heat radiating members 3 constituting the light source unit 1 are arranged is the left-right direction, and the direction orthogonal to these directions is the up-down direction. However, these directions do not define the mounting direction of the light source unit 1 and the lighting fixture 10.

  The lighting fixture 10 of this embodiment is a so-called high ceiling lighting fixture that is installed in a building with a high ceiling such as a gymnasium or a hall and illuminates the lighting space from above. As shown in FIGS. 1 and 2, the lighting fixture 10 includes a plurality of (two in the present embodiment) light source units 1 and a power supply unit 7. Moreover, it is preferable that the luminaire 10 further includes a pair of connecting members 11, an arm 12, and a pair of arm attachment members 13.

  As shown in FIGS. 3 and 4, the light source unit 1 includes an LED module 2 (light source) and a cover 6. The light source unit 1 preferably further includes a heat radiating member 3, a lens block 4, and a seal member 5.

  As shown in FIGS. 3 and 4, the LED module 2 includes a mounting substrate 20 and a plurality (22 in FIG. 3) of light emitting diodes 21 (hereinafter referred to as LEDs 21). The mounting substrate 20 is formed of a rectangular flat plate-like aluminum substrate. Each LED 21 is a package-type white LED which is conventionally known. These LEDs 21 are mounted side by side vertically and horizontally on the lower surface of the mounting substrate 20.

  In addition, a receptacle connector electrically connected to each LED 21 is mounted on the lower surface of the mounting substrate 20 via a wiring conductor formed on the lower surface of the mounting substrate 20. Furthermore, circular screw insertion holes 200 are provided at the four corners of the mounting substrate 20, respectively.

  As shown in FIGS. 3 and 4, the heat radiating member 3 includes a base portion 30, a pair of edge portions 31, and a plurality of heat radiating plates 32. In addition, it is preferable that the base part 30, the edge part 31, and the heat sink 32 are formed with the material excellent in thermal conductivity, such as aluminum alloy, for example. The base part 30 is formed in a rectangular flat plate shape. A large number of screw holes (female screws) 300 are provided on the lower surface of the base portion 30.

  Each of the pair of edge portions 31 has a rectangular parallelepiped shape whose longitudinal direction is the front-rear direction, and is integrally formed with the base portion 30 at the left end edge or the right end edge of the base portion 30. In addition, the thickness (width in the vertical direction) of the edge portion 31 is formed sufficiently larger than the thickness of the base portion 30.

  One screw hole (female screw) 310 is provided on each end face in the front-rear direction of the edge 31. A plurality of screw holes (female screws) 311 are provided on the outer side surface of the edge 31 in the left-right direction at intervals along the front-rear direction. Furthermore, two screw holes (female screws) 312 are provided on the upper surface of the edge portion 31 so as to be aligned in the front-rear direction.

  The plurality of heat radiating plates 32 are each a rectangular flat plate having a longitudinal direction in the front-rear direction, and are integrally formed with the base portion 30 on the upper surface of the base portion 30. In addition, these heat sinks 32 are arrange | positioned at intervals in the left-right direction.

  As shown in FIGS. 3 and 4, in the lens block 4, a block body 40 and a plurality of lenses 41 are integrally formed of a synthetic resin material having translucency such as acrylic resin. The block main body 40 includes a rectangular flat plate-like bottom plate 400 and four side plates 401 that protrude upward from the periphery of the bottom plate 400. The plurality of lenses 41 are integrally formed side by side on the top surface of the bottom plate 400. In addition, these lenses 41 are provided in the number and position corresponding to each LED21 of the LED module 2 on a one-to-one basis.

  A fixing piece 402 is integrally formed on each of the side plates 401 and the left side plate 401 in the front-rear direction. These fixing pieces 402 protrude upward from the upper edge at the central portion in the longitudinal direction of each side plate 401. Further, these fixed pieces 402 are formed in a C-shape when viewed from the up-down direction.

  The seal member 5 is formed in a rectangular frame shape with, for example, silicone rubber. At the four corners of the seal member 5, projections 50 each having a shape similar to the outer shape of the bolt protrude downward. Further, three circular screw insertion holes 51 are provided at four intervals on the four sides of the seal member 5, respectively. Further, two circular through holes 52 are provided at two intervals in each of the two sides in the left-right direction of the seal member 5.

  The cover 6 includes a cover main body 60 and an outer casing 61 as shown in FIGS. 6A to 6C. The cover main body 60 and the outer casing 61 are integrally formed of a synthetic resin material having translucency such as polycarbonate resin.

  The cover main body 60 is formed in a rectangular box shape whose upper surface is opened by a rectangular flat plate-like front surface portion 600 and four side surface portions 601 protruding upward from the periphery of the front surface portion 600. At the four corners of the front surface portion 600, protrusions 6001 that protrude downward are provided. In addition, the front surface part 600 and each side part 601 are integrally connected via the connection part 602 which curves in an arc shape.

  The outer casing 61 is formed in a rectangular frame shape when viewed in the vertical direction, and protrudes outward from the opening edge of the cover body 60. Further, circular fitting holes 611 are provided at the four corners of the outer casing 61, respectively. Furthermore, three circular screw insertion holes 610 are provided at four intervals on the four sides of the outer casing 61, respectively. In addition, two protrusions 612 are provided on the upper surfaces of the two sides in the left-right direction of the outer casing 61 with a space therebetween.

  As shown in FIGS. 1 and 2, the power supply unit 7 includes a power supply block and a case 71 that houses the power supply block.

  The power supply block has a power conversion circuit that converts power supplied from the outside (for example, AC power supplied from a commercial power supply) into power (DC power) required for the two light source units 1. The power conversion circuit includes, for example, a full-wave rectifier, a power factor correction circuit (step-up chopper circuit), a DC / DC converter (step-down chopper circuit), and the like. This power supply block is configured by mounting a large number of circuit components constituting a power conversion circuit on the surface of a printed wiring board.

  In addition, an output cable having a plug connector at the tip is electrically connected to the printed wiring board. The output cable is pulled out of the case 71 and a plug connector is connected to the receptacle connector of the light source unit 1, whereby the power supply unit 7 (power supply block) and the light source unit 1 are electrically connected.

  As shown in FIGS. 1 and 2, the case 71 includes a bottom plate 72, a top plate 73, and four side plates (only the first side plate 74 and the fourth side plate 77 are shown in FIGS. 1 and 2). The The bottom plate 72 is formed in a rectangular flat plate shape that is long in the front-rear direction by a metal plate such as a stainless steel plate. However, the strength of the bottom plate 72 is improved by bending the peripheral portion upward. A plurality of through holes 720 arranged in the vertical and horizontal directions are provided in the central portion of the bottom plate 72.

  The top plate 73 is formed in a rectangular flat plate shape that is long in the front-rear direction by a metal plate such as a stainless steel plate. A rectangular flat plate-like first side plate 74 is formed on the front end edge of the top plate 73 so as to hang downward. The first side plate 74 is provided with a plurality of through holes 740 arranged side by side in the vertical and horizontal directions.

  In addition, a rectangular flat plate-like second side plate is formed on the rear end edge of the top plate 73 so as to hang downward. Similar to the first side plate 74, the second side plate is provided with a plurality of through holes arranged side by side in the vertical and horizontal directions. Further, a third side plate and a fourth side plate 77 are respectively formed on the left end edge and the right end edge of the top plate 73 so as to hang downward. These third side plate and fourth side plate 77 are formed in a rectangular flat plate shape having the same dimensions.

  As shown in FIGS. 1 and 2, the connecting member 11 is composed of a strip-shaped metal plate (for example, a stainless steel plate), and includes a first connecting part 110 and two first connecting parts 110 located on both sides of the first connecting part 110. 2 connecting portions 111. In addition, the 1st connection part 110 protrudes in the thickness direction (left-right direction) with respect to the 2nd connection part 111 of both sides. The first connecting portion 110 is provided with three screw insertion holes. Each second connecting portion 111 is provided with two screw insertion holes.

  The connecting member 11 includes two screws 112 that are threaded through the screw insertion holes of the first connecting portion 110 and the second connecting portions 111 into screw holes 311 provided in the edge 31 of the heat dissipation member 3. It is attached to the light source unit 1 (see FIG. 1 and FIG. 2).

  As shown in FIGS. 1 and 2, the arm attachment member 13 includes a fixed portion 130, a pair of attachment portions 131, and a bearing portion 132. In addition, it is preferable that the fixing | fixed part 130, the attaching part 131, and the bearing part 132 are integrally formed, for example by aluminum die casting.

  The fixing part 130 is formed in a square hook shape with the lower side opened. The pair of attachment portions 131 are formed in a truncated cone shape that is long in the vertical direction, and a screw hole (female screw) is formed at the tip (upper end). The bearing portion 132 is formed in a cylindrical shape, is disposed between the pair of attachment portions 131, and is connected to each attachment portion 131 and the fixing portion 130. The bearing portion 132 is provided with two screw holes arranged in the vertical direction.

  As shown in FIGS. 1 and 2, the arm 12 is formed by integrally forming a fixed plate 120 and a pair of support plates 121 that protrude downward from both ends of the fixed plate 120 in the left-right direction. A circular bolt insertion hole 1201 is provided at the right end of the fixing plate 120. An oblong bolt insertion hole 1202 is provided at the left end of the fixing plate 120. A circular screw insertion hole and an arcuate screw insertion hole 1211 are arranged in the vertical direction at the tip (lower end) of each support plate 121.

  The arm 12 includes two light source units connected by the connecting member 11 by screwing screws 122 respectively passed through two screw insertion holes of each support plate 121 into two screw holes provided in the bearing portion 132. 1 is rotatably supported. Since the screw insertion hole 1211 is formed in an arc shape, the angle of the arm 12 can be changed by loosening the screw 122.

  Next, a procedure for assembling the light source unit 1 of the present embodiment will be described.

  First, the operator places the LED module 2 on the lower surface of the base portion 30 of the heat radiating member 3 and then screws the screw 22 passed through the screw insertion hole 200 into the screw hole 300 of the base portion 30 so that the LED module 2 is moved to the heat radiating member. Fix to 3.

  Subsequently, the operator puts the lens block 4 on the LED module 2, and then screws the screws passed through the grooves of the respective fixing pieces 402 of the lens block 4 into the screw holes 300 of the base portion 30, so that the lens block 4 is dissipated. Fix to 3. At this time, each lens 41 of the lens block 4 is arranged to be positioned below the corresponding LED 21.

  Next, the operator fits the four protrusions 50 of the seal member 5 into the fitting holes 611 provided at the four corners of the outer casing 61 of the cover 6 to attach the seal member 5 to the cover 6. At this time, the protrusion 612 protruding upward from the upper surface of the outer casing 61 is inserted into the through hole 52 of the seal member 5.

  Then, the operator covers the lens block 4 with the cover 6 attached with the seal member 5, and then screws the screw 62 passed through the screw insertion hole 610 of the outer casing 61 into the screw hole 300 of the base portion 30 to cover the cover 6. Fix to the heat dissipating member 3. The light source unit 1 of this embodiment is assembled by the above procedure (see FIG. 5).

  Furthermore, the procedure for assembling the lighting fixture 10 of the present embodiment will be described.

  First, an operator arranges two light source units 1 side by side in the front-rear direction, and fits the edge 31 of the heat radiating member 3 of both light source units 1 and the fixing portion 130 of each arm attachment member 13. Subsequently, the worker overlaps the fixing member 130 and the edge portions 31 on both sides so that the fixing portion 130 is aligned with the step of the first connecting portion 110.

  Then, the operator screws the second connecting portions 111 on both sides of the connecting member 11 to the edge portion 31 of each light source unit 1, and further connects the fixing portion 130 and the first connecting portion 110 to the edge portion of each light source unit 1. Screw to 31. Thereby, the two light source units 1 are connected by the connecting member 11.

  Next, the worker attaches the power supply unit 7 to the pair of arm attachment members 13. At this time, the operator can screw the power supply unit 7 into a pair of arm mounting members by screwing screws through the through holes provided in the bottom plate 72 constituting the case 71 of the power supply unit 7 into the screw holes of the mounting portions 131. 13 is attached. Thereafter, the worker performs a connection work of the output cable drawn from the power supply unit 7.

  Finally, the operator screws the arm 122 into the arm mounting member 13 by screwing the screws 122 passed through the two screw insertion holes of the support plate 121 into the two screw holes of the bearing portion 132 of the arm mounting member 13, respectively. Install. The lighting fixture 10 of this embodiment is assembled by the above procedure (refer FIG.1 and FIG.2).

  The lighting fixture 10 assembled by the above procedure is installed on the ceiling of a building by tightening nuts to a pair of suspension bolts passed through the bolt insertion holes 1201 and 1202 of the arm 12.

  By the way, in the conventional lighting fixture, since the diffusion panel for reducing glare is attached, a part of the light transmitted through the translucent panel is blocked by the peripheral portion of the diffusion panel, and the illumination efficiency to the illumination space There was a problem that decreased. In addition, the diffusion panel is a structure that is attached with a gap between the light transmissive panel and, therefore, even when dust or the like accumulates in the gap, part of the light transmitted through the light transmissive panel is dust or the like. There is a problem that the irradiation efficiency to the illumination space decreases.

  Therefore, in the lighting fixture 10 of the present embodiment, the following configuration is adopted in order to solve the above problem. FIG. 7A is a cross-sectional view of the cover 6, and FIG.

  A plurality of first embossments 6002 are formed on the inner surface of the front surface portion 600 of the cover body 60 as shown in FIG. 7B. Further, as shown in FIG. 7B, a plurality of second wrinkles 6011 are formed on the inner surface of the side surface portion 601 of the cover main body 60. The first texture 6002 has a greater texture depth than the second texture 6011.

  Each of the plurality of first wrinkles 6002 may have the same wrinkle depth or may have a different wrinkle depth. Further, each of the plurality of second textures 6011 may have the same texture depth or may have different texture depths. Here, the wrinkles refer to irregularities formed on the inner surfaces of the front surface portion 600 and the side surface portion 601. Further, the grain depth refers to the height from the bottom of the recess to the tip of the projection.

  Of the light emitted from the LED module 2, the light traveling toward the front surface 600 is diffused by the first texture 6002. Therefore, glare can be reduced compared to the case where the first texture 6002 is not formed on the inner surface of the front surface portion 600. In addition, as shown in FIG. 7B, when a plurality of textures 6003 are formed on the inclined surface of each first texture 6002, light directed from the LED module 2 toward the front surface portion 600 can be further diffused, and glare can be further increased. It can be effectively reduced.

  Further, light emitted from the LED module 2 toward the side surface 601 is diffused by the second texture 6011. The ceiling surface can be illuminated by irradiating a part of the light transmitted through the side surface portion 601 upward. In particular, when the grain depth of the second grain 6011 is shallower than that of the first grain 6002, as in the present embodiment, the first grain 6002 and the second grain 6011 have the same grain depth. Compared to brighter the ceiling surface.

  Furthermore, in the lighting fixture 10 of this embodiment, it is not necessary to use a diffusing panel as in the conventional lighting fixture, and the light emitted from the LED module 2 is not blocked by the diffusing panel. There is also an advantage that the irradiation efficiency is difficult to decrease. That is, according to the light source unit 1 and the lighting fixture 10 of the present embodiment, it is possible to make it difficult to reduce the irradiation efficiency to the illumination space while reducing the glare.

  Moreover, in the lighting fixture 10 of this embodiment, in the cover 6, the front part 600 and each side part 601 are integrally connected through the connection part 602, and as shown to FIG. 7B, it is attached to the inner surface of the connection part 602. It is preferable to form the third texture 6021. The third texture 6021 is formed such that the texture depth gradually increases from the side surface 601 toward the front surface 600. Thus, by forming the third texture 6021 on the inner surface of the joint portion 602, it is possible to suppress the amount of light transmitted through the cover 6 from changing suddenly at the joint portion 602.

  By the way, in the lighting fixture 10 of this embodiment, the height dimension h1 (refer FIG. 7A) in the up-down direction of the cover 6 is large compared with the translucent panel of the conventional lighting fixture. In other words, the distance from the LED 21 of the LED module 2 to the front surface portion 600 of the cover 6 is long. As a result, the light diffusibility can be improved as compared with the case where the height is set to be the same as that of the conventional translucent panel.

  For example, when the cover 6 is placed on a work table or the like, the front surface portion 600 is often placed facing downward. However, as in the present embodiment, the protrusion 6001 is formed on the lower surface of the front surface portion 600 of the cover 6. By providing, there is an advantage that the lower surface of the front surface portion 600 is hardly damaged.

  In the present embodiment, the case where the lighting fixture 10 is a lighting fixture for a high ceiling has been described as an example. However, the lighting fixture 10 may be a lighting fixture such as a road lamp or a street lamp. In the present embodiment, the case where there are two light source units 1 has been described as an example, but three or more light source units 1 may be provided. Furthermore, in this embodiment, the LED module 2 is used as the light source, but the light source is not limited to the LED, and may be a halogen lamp, for example.

  As described above, the light source unit 1 of the present embodiment includes the light source (LED module 2) and the cover 6 made of a translucent material. The cover 6 is formed in a box shape by a front surface portion 600 facing the light source and a side surface portion 601 protruding from the periphery of the front surface portion 600 to the front surface portion 600 and projecting to the light source side, and is arranged to cover the light source. . Further, the cover 6 has a first wrinkle 6002 formed on the inner surface of the front surface portion 600 and a second wrinkle on the inner surface of the side surface portion 601 so that the light diffusibility of the front surface portion 600 is higher than the side surface portion 601. 6011 is formed.

  According to this configuration, since the light emitted from the light source is diffused by the first texture 6002 formed on the front surface portion 600, the glare is reduced compared to the case where the first texture 6002 is not formed on the front surface portion 600. be able to. And since the light radiated | emitted from a light source is not obstruct | occluded by the peripheral part of a diffusion panel like the conventional lighting fixture, it can also make it difficult to reduce the irradiation efficiency to illumination space. Furthermore, since the light diffusibility of the side surface portion 601 is lower than that of the front surface portion 600, the ceiling surface can be illuminated brighter than when the front surface portion 600 and the side surface portion 601 have the same light diffusibility. .

  Further, as in the light source unit 1 of the present embodiment, it is preferable that the first texture 6002 has a greater texture depth than the second texture 6011.

  According to this configuration, since the light emitted from the light source is diffused by the first texture 6002 formed on the front surface portion 600, the glare is reduced compared to the case where the first texture 6002 is not formed on the front surface portion 600. be able to. And since the light radiated | emitted from a light source is not obstruct | occluded by the peripheral part of a diffusion panel like the conventional lighting fixture, it can also make it difficult to reduce the irradiation efficiency to illumination space. Furthermore, since the light diffusibility of the side surface portion 601 is lower than that of the front surface portion 600, the ceiling surface can be illuminated brighter than when the front surface portion 600 and the side surface portion 601 have the same light diffusibility. .

  Further, like the light source unit 1 of the present embodiment, the inner surface of the connecting portion 602 that connects the side surface portion 601 and the front surface portion 600 has a curved shape, and the embossing depth increases from the side surface portion 601 toward the front surface portion 600. It is preferable to form the third embossment 6021 that gradually becomes deeper.

  According to this configuration, since the third texture 6021 is formed in the joint 602 so that the texture depth gradually increases from the side surface 601 toward the front surface 600, the amount of light transmitted through the cover 6 is reduced. It is possible to suppress a sudden change at the connecting portion 602.

  The lighting fixture 10 of the present invention includes a light source unit 1 and a power supply unit 7 that supplies power to the light source unit 1.

  According to this configuration, by using the light source unit 1 described above, it is possible to make it difficult to reduce the irradiation efficiency to the illumination space while reducing the glare.

1 Light source unit 2 LED module (light source)
6 Cover 7 Power supply unit 10 Lighting fixture 600 Front surface portion 601 Side surface portion 602 Connection portion 6002 First texture 6011 Second texture 6021 Third texture

Claims (4)

A light source;
The light source is made of a material having translucency, and is formed in a box shape by a front surface portion facing the light source and a side surface portion projecting toward the light source side in a direction intersecting the front surface portion from a peripheral edge of the front surface portion. A cover arranged to cover,
The cover has a first wrinkle formed on the inner surface of the front surface portion and a second wrinkle formed on the inner surface of the side surface portion so that the light diffusibility of the front surface portion is higher than that of the side surface portion. A light source unit characterized by that.   2. The light source unit according to claim 1, wherein the first wrinkle has a deeper wrinkle depth than the second wrinkle.   The inner surface of the connecting portion that connects the side surface portion and the front surface portion has a curved shape, and a third emboss is formed so that the emboss depth gradually increases from the side surface portion toward the front surface portion. The light source unit according to claim 1, wherein the light source unit is a light source unit.   A lighting fixture comprising: the light source unit according to claim 1; and a power supply unit that supplies power to the light source unit.

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