JP6723083B2 - Light source unit and lighting device - Google Patents

Description

The present invention relates to a light source unit and a lighting device.

Conventionally, there is provided a lighting device including a long light source unit and a device body having a recess into which a part of the light source unit is inserted, wherein the light source unit is detachably attached to the device body. (For example, Patent Document 1).

JP, 2014-078511, A

The illuminating device of Patent Document 1 ensures the rigidity of the light source unit by providing the frame side surface of the light source unit that is provided in a protruding manner in the direction opposite to the surface on which the substrate is attached. However, in the lighting device described in Patent Document 1, the cover is fixed by abutting the side surface of the frame. Therefore, in the light source unit, the frame needs to be enlarged in the mounting surface direction of the ceiling in order to obtain rigidity, and the amount of protrusion from the ceiling becomes large.

The present invention has been made in order to solve the above problems, and provides a light source unit and a lighting device in which the amount of protrusion from the ceiling is suppressed to a low level and the rigidity is ensured while being made thin and compact. Is.

A light source unit according to the present invention is a light source unit that is detachably attached to an apparatus body attached to a mounting portion such as a ceiling and electrically connected to the apparatus body, and is a substrate and a light emitting element mounted on the substrate. a luminous body having a frame member where the light emitting element is attached to the bottom, and a cover member attached to both side ends of the frame member so as to cover the light-emitting element, a frame member, toward the cover member from the bottom protruding, and has a reinforcing portion that is covered by the cover member.

In the light source unit and the illuminating device of the present invention, the frame member has a reinforcing portion protruding from the bottom portion to the cover member side. As a result, the frame member can secure a longitudinal elastic modulus sufficient to suppress the bending in the longitudinal direction, and the light source unit and the lighting device can be thin and compact, and the rigidity can be secured.

It is a perspective view of the illuminating device which concerns on Embodiment 1 of this invention. FIG. 3 is an exploded perspective view of the lighting device according to the first embodiment of the present invention. FIG. 3 is a perspective view of a device body of the lighting device according to the first embodiment of the present invention. It is an AA' sectional view in FIG. 1 of the illuminating device which concerns on Embodiment 1 of this invention. It is a perspective view of the spring used for the illuminating device which concerns on Embodiment 1 of this invention. It is an exploded perspective view of the light source unit of the illuminating device which concerns on Embodiment 1 of this invention. It is sectional drawing of the light source unit of the illuminating device which concerns on Embodiment 1 of this invention. FIG. 3 is a perspective view of a connecting fitting of the lighting device according to Embodiment 1 of the present invention. It is a figure which shows the light distribution characteristic of the light source unit of the illuminating device which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention. It is sectional drawing of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention. It is a figure which shows the light distribution characteristic of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention. It is a figure which shows the modification of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention. It is a figure which shows the state which the modification of FIG. 13 of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention is attached to the apparatus main body. It is a figure which shows the state which the apparatus main body to which the modification of FIG. 13 of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention was attached is attached to the attachment part. FIG. 9 is an exploded perspective view of a light source unit of the lighting device according to the third embodiment of the present invention. It is sectional drawing of the light source unit of the illuminating device which concerns on Embodiment 3 of this invention. It is a figure which shows the light distribution characteristic of the light source unit of the illuminating device which concerns on Embodiment 3 of this invention.

Hereinafter, the lighting device 1 according to the present invention will be described in detail with reference to the drawings. In the following drawings, the size relationship of each component may be different from the actual one. Further, in the following drawings, the components denoted by the same reference numerals are the same or equivalent, and this is common to all the texts of the specification. Furthermore, the forms of the constituent elements shown in the entire text of the specification are merely examples, and the present invention is not limited to these descriptions.

Embodiment 1.
FIG. 1 is a perspective view of a lighting device according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the lighting device according to the first embodiment of the present invention. The configuration of each part of the lighting device 1 will be described with reference to FIGS. 1 and 2. In the following description, the longitudinal direction is the longitudinal direction X, the lateral direction with respect to the longitudinal direction X is the lateral direction Y, and the directions orthogonal to the longitudinal direction X and the lateral direction Y are the vertical directions Z. In addition, a mounting surface side such as a ceiling to which the lighting device 1 is mounted is defined as an upward direction Z1, and a side opposite to the upward direction Z1 and illuminated by the lighting device 1 is defined as a downward direction Z2.

The lighting device 1 includes an elongated device body 100 and an elongated light source unit 200 detachably attached to the device body 100. The device body 100 is formed with a housing recess 111 that houses a part of the light source unit 200.

FIG. 3 is a perspective view of a device body of the lighting device according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view taken along the line AA′ in FIG. 1 of the lighting device according to the first embodiment of the present invention. The configuration of each part of the apparatus main body 100 will be described with reference to FIGS.

The device main body 100 has a mounting part 110 into which a part of the light source unit 200 is inserted and mounted, a side plate 120 covering a long end of the mounting part 110, and a power supply line (not shown) drawn from the outside of the device main body 100. A terminal block 130 to be inserted and a spring 140 for holding the light source unit 200 are provided. The apparatus main body 100 is attached to a mounting portion such as a ceiling by using a fixture such as a bolt.

The mounting portion 110 includes a housing recess 111 formed as a recess along the longitudinal direction X, and a collar portion 112 and an inclined portion 113 provided on both sides of the housing recess 111 in the lateral direction Y.

The accommodating recess 111 includes a bottom portion 111a formed in a long and rectangular plate shape along the longitudinal direction X, and a pair of side portions 111b extending downward (Z2 side) from each of the long side sides of the bottom portion 111a. The light source unit 200 has a concave shape and accommodates a part of the light source unit 200. An opening 111c into which the light source unit 200 is inserted is formed in the accommodation recess 111 at a position facing the bottom 111a.

The bottom 111a has a power supply hole 111aa for drawing in a power supply line (not shown) for receiving electric power from a commercial power supply, and a fixing for fixing the apparatus main body 100 to a mounting portion such as a ceiling with a fixing tool such as a bolt. The hole 111ab is formed.

The brim portions 112 are formed in a pair so as to be separated from each of the long side edges on the opening 111c side of the pair of side portions 111b.

The inclined portions 113 are provided on both sides of the housing recess 111 in the lateral direction Y, and are formed so as to be apart from the housing recess 111 toward the upper side (Z1 side) from each of the long sides of the collar 112. ..

The side plates 120 are arranged at both ends of the mounting portion 110 in the longitudinal direction X and cover the accommodation recess 111 and the inclined portion 113. The side plate 120 is substantially vertical to the side plate body 121 from the side (Z2 side) of the side plate body 121 that covers the ends of the accommodation recess 111 and the inclined portion 113 in the longitudinal direction X. And a side plate collar portion 122 protruding so that The side plate 120 is disposed in the mounting portion 110 so that the side plate flange portion 122 covers the end of the opening 111c, and the side plate flange portion 122 is provided together with the flange portion 112.

The terminal block 130 is fixed to the bottom 111a of the accommodation recess 111, is connected to a power supply line (not shown) drawn from the power supply drawing hole 111aa, and supplies the electric power supplied from the commercial power supply to the light source unit 200. The terminal block 130 includes a terminal block body 131 formed in the shape of a rectangular box, and a terminal block connection part 132 for electrically connecting to the light source unit 200. The terminal block connecting portion 132 includes a terminal block electric wire 132a and a terminal block connector 132b provided at the tip of the terminal block electric wire 132a.

Two springs 140 shown in FIGS. 2 and 3 are arranged in a pair along the longitudinal direction X on the bottom portion 111 a of the accommodation recess 111. The spring 140 is one of the attachment mechanisms for attaching the light source unit 200 to the apparatus main body 100, and engages with the connecting fitting 260 shown in FIG.

FIG. 5 is a perspective view of a spring used in the lighting device according to Embodiment 1 of the present invention. The spring 140 is formed of an elastic material such as a stainless material or a spring steel material. The spring 140 is provided with a spring fixing portion 141 fixed to the bottom portion 111 a, an arc-shaped spring arc portion 142, and a spring tip portion 143 provided at the tip of the spring arc portion 142 and hooked on the coupling fitting 260. ing. Further, the paired springs 140 are arranged on the bottom portion 111a such that the spring tip portions 143 face in opposite directions. The spring 140 may be formed by bending an elastic material of a plate material or may be formed by bending an elastic material of a wire material.

FIG. 6 is an exploded perspective view of the light source unit of the lighting device according to Embodiment 1 of the present invention. FIG. 7 is a cross-sectional view of the light source unit of the lighting device according to the first embodiment of the present invention. The configuration of each part of the light source unit 200 will be described with reference to FIGS. 6 and 7.

The light source unit 200 includes a light emitting body 210 having a plurality of light emitting elements, a frame member 220 to which the light emitting body 210 is attached, and a cover member 230 attached to the frame member 220 so as to cover the light emitting body 210. .. Further, the light source unit 200 includes a lid 240 disposed at an end portion of the light source unit 200 in the longitudinal direction X, a power supply device 250 shown in FIGS. 2 and 4 for supplying a predetermined lighting power to the light emitting body 210, and a spring. 2 and the connecting fitting 260 shown in FIG.

The light emitting body 210 includes a substrate 211 formed in a long shape along the longitudinal direction X, and a plurality of light emitting elements 212 mounted on the substrate 211 linearly along the longitudinal direction X. Two light emitting elements 212 are provided in the lateral direction Y. The positions arranged in the lateral direction Y are arranged such that the distance from the center of the light emitting element 212 to the center of the substrate 211 is longer than the distance from the center of the light emitting element 212 to the end of the substrate 211. In addition, an electric wire (not shown) for electrically connecting to the power supply device 250 is connected to one end portion of the light emitting body 210 in the longitudinal direction. By connecting this electric wire to the power supply device 250, the light emitting body 210 and the power supply device 250 are electrically connected. The light emitting element 212 is, for example, a surface mount type LED element, but may be a COB type LED module. Further, the light emitting element 212 may be a solid-state laser element, a semiconductor laser element, or an organic EL element.

The frame member 220 has a frame bottom portion 221 formed in a long rectangular plate shape along the longitudinal direction X, and a reinforcing portion 225 protruding from the frame bottom portion 221 toward the cover member 230. The reinforcing portion 225 includes a pair of frame upright portions 222 extending from the opposite sides in the longitudinal direction of the frame bottom portion 221 to the cover member 230 side, that is, the lower side (Z2 side), and from the tip of each frame upright portion 222. And frame sloping portions 223 formed in directions away from each other. The frame inclined portion 223 is formed at an acute angle with respect to the frame bottom portion 221, that is, the tip end opposite to the end portion on the frame rising portion 222 side is formed toward the upper side (Z1 side). An inclined portion end portion 223a formed by bending is provided at the tip of each frame inclined portion 223. Although the frame member 220 is formed of a reflective member, a reflective paint may be used, or the reflective member may be arranged on the base material. The frame member 220 is formed as a flat surface, but may have an uneven surface.

The cover member 230 is formed in a long shape so as to cover the light emitting body 210, and is attached to a side end of the frame member 220. The cover member 230 is formed of a diffusive material such as milky white acrylic resin and diffuses the light emitted from the light emitting body 210. The cover member 230 has a cover front surface portion 231, a cover side portion 232, and a cover bottom portion 233 in the lateral direction Y.

The cover front part 231 has an arc shape and covers the light emitting body 210. The cross section of the cover front portion 231 in the lateral direction has an arc shape, but may have another shape. For example, the cross section of the cover front part 231 may have a flat plate shape, a triangular shape, a quadrangular shape, or another polygonal shape. Alternatively, the cover front surface portion 231 may have a planar shape or a polyhedral shape formed of a single or a plurality of flat surfaces, or may have a shape formed of a single or a plurality of curved surfaces. The cover side part 232 is provided on the frame bottom part 221 side, that is, on the upper side (Z1 side) from each end part of the longitudinal side end of the cover front part 231. The cover bottom portions 233 are formed so as to be closer to each other than the ends of the longitudinal side ends of the respective cover side portions 232. Further, the cover bottom portion 233 is provided with a cover engaging portion 233a composed of two protrusions protruding toward the cover front surface portion 231. The cover member 230 is formed such that the cover front portion 231, the cover side portion 232, and the cover bottom portion 233 are continuous in the longitudinal direction X.

The cover member 230 is fixed to the frame member 220 by engaging the cover engaging portion 233a provided on the cover bottom portion 233 with the inclined end portion 223a of the frame member 220, that is, the longitudinal side end portion of the frame member 220. It At this time, the frame bottom portion 221 and the cover bottom portion 233 are provided side by side, and the frame bottom portion 221 and the cover bottom portion 233 become the unit bottom portion 201 that constitutes the bottom portion of the light source unit 200. Further, the cover front surface portion 231 and the cover side portion 232, which connect both ends of the unit bottom portion 201, which is the end portion of the cover bottom portion 233, serve as a unit emission portion 202 that emits light from the light emitting element 212. When the cover member 230 is attached to the frame member 220, the cover member 230 and the frame member 220 are engaged with each other on the unit bottom 201 side. In the short-side direction Y, the cover member 230 is provided side by side so that the unit emitting portion 202, the frame upright portion 222 and the frame inclined portion 223 that serve as the reinforcing portion 225 of the frame member 220 are spaced from each other. The unit bottom portion 201 may have a gap between the frame bottom portion 221 and the cover bottom portion 233, or may have a recess on the cover member 230 side.

The lid 240 is provided at the end of the light source unit 200 in the longitudinal direction X, closes the opening of the cover member 230 in the longitudinal direction X, and distributes the light emitted by the light emitting body 210 in the longitudinal direction X. The lid 240 is formed of a transparent and diffusive material such as acrylic resin, and is joined to the cover member 230 by a joining means such as an adhesive or heat welding. The lid 240 is provided at an end portion of the cover member 230, and has a lid end surface 241 that is an end portion in the longitudinal direction X of the light source unit 200 and a lid side surface 242 that is a side surface of the lid 240.

As shown in FIGS. 2 and 4, the power supply device 250 is fixed to the surface of the frame bottom portion 221 opposite to the surface on which the light emitting body 210 is attached. The power supply device 250 supplies electric power from a commercial power source to the light emitting body 210 via the terminal block 130 to light the light emitting body 210.

FIG. 8 is a perspective view of a connecting fitting of the lighting device according to Embodiment 1 of the present invention. The connecting metal fitting 260 is one of attachment mechanisms for attaching the light source unit 200 to the apparatus main body 100, and engages with the spring 140. The connecting fitting 260 is substantially L-shaped and includes a fitting fixing portion 261 and a spring connecting portion 262. The metal fitting fixing portion 261 is a portion fixed to the frame bottom portion 221 with a screw or the like. The spring connecting portion 262 is formed with a connecting opening 262a on which the spring 140 is hooked. In the light source unit 200, the connection opening 262a and the spring tip portion 143 of the spring 140 engage with each other, and are fixed to the apparatus main body 100.

(Regarding the optical characteristics of the light source unit 200)
FIG. 9: is a figure which shows the light distribution characteristic of the light source unit of the illuminating device which concerns on Embodiment 1 of this invention. The light distribution characteristics of the light source unit 200 will be described with reference to FIG. 9. The light emitted from the light emitting element 212 of the light emitting body 210 has the light traveling to the optical path A, the optical path B, and the optical path C.

The optical path A is an optical path of the light emitted from the light emitting element 212, which travels directly to the unit emitting section 202 and is emitted from the unit emitting section 202.

Of the light emitted from the light emitting element 212, the optical path B travels toward the frame upright portion 222, is reflected by the frame upright portion 222 toward the outer side in the lateral direction Y of the cover member 230, and is emitted from the unit emitting portion 202. It is an optical path.

In the optical path C, of the light on the optical paths A and B, the light reflected on the inner surface of the unit emitting portion 202 advances toward the frame inclined portion 223, is reflected again on the frame inclined portion 223, and is reflected by the cover member 230. It is an optical path emitted from the unit emitting portion 202 toward the outer side in the lateral direction Y direction.

The frame member 220 has a reinforcing portion 225 composed of a frame rising portion 222 and a frame inclined portion 223 that project from the frame bottom portion 221 toward the cover member 230 side. As a result, the frame member 220 can secure a longitudinal elastic coefficient with which the frame bottom portion 221 can be prevented from bending in the longitudinal direction, and the rigidity of the frame member 220 can be secured. As a result, it is possible to provide the light source unit 200 and the illuminating device 1 in which the amount of protrusion from the ceiling is suppressed to a low level, the thickness and size are reduced, and the rigidity is secured.

Further, the light source unit 200 has a unit bottom portion 201 formed to be substantially flat. Therefore, the light source unit 200 is suppressed from interfering with a member arranged inside the accommodation recess 111 of the apparatus body 100, and therefore the light source unit 200 can be easily attached to the apparatus body 100. In addition, the lighting device 1 can effectively utilize the internal space of the accommodation recess 111.

Further, in the conventional lighting device, when the frame side surface portion of the light source unit is housed in the concave portion at the device main end, and the frame side surface of the light source unit interferes with a member and an electric wire arranged in the concave portion at the device main end There is. Since the unit bottom portion 201 of the light source unit 200 is formed to be substantially flat, it does not interfere with members and electric wires arranged inside the apparatus body.

Further, in the light source unit 200, the frame standing portion 222 and the frame inclined portion 223, which serve as the reinforcing portion 225 of the frame member 220, are provided so as to form a space between the unit emitting portion 202. Therefore, it is possible to ensure rigidity and emit light from the unit emitting section 202. Therefore, the light source unit 200 and the illumination device 1 can be downsized and lightened.

In addition, conventional lighting devices that are directly attached to a mounting part such as a ceiling are required to be thin, and when the light source unit and the lighting device are thinned by reducing the thickness of the cover, the light emitting element is reduced. Irradiated light may not be sufficiently diffused and uneven brightness may occur. Since the light source unit 200 is provided with the optical function portion including the frame standing portion 222 and the frame inclined portion 223, light is diffused inside the cover member 230. As a result, uneven brightness that appears on the surface of the cover member 230 can be suppressed. Furthermore, the light source unit 200 can suppress the graininess caused by the light of the light emitting element 212 appearing on the cover member 230 when the light is irradiated.

Embodiment 2.
FIG. 10 is an exploded perspective view of a light source unit of the lighting device according to the second embodiment of the present invention. FIG. 11 is a sectional view of a light source unit of the lighting device according to the second embodiment of the present invention. Portions having the same configurations as those of the illumination device of FIGS. 1 to 9 are designated by the same reference numerals, and the description thereof will be omitted. In the lighting device according to the second embodiment of the present invention, the light-emitting body 310, the frame member 320, and the cover member 330 having different shapes from the light source unit 200 of the lighting device according to the first embodiment of the present invention will be mainly described. ..

The configuration of each part of the light source unit 300 will be described with reference to FIGS. 10 and 11. The light source unit 300 includes a light emitting body 310 having a plurality of light emitting elements, a frame member 320 to which the light emitting body 310 is attached, and a cover member 330 attached to the frame member 320 so as to cover the light emitting body 310. There is.

The light-emitting body 310 includes a substrate 311 that is elongated in the longitudinal direction X, and a plurality of light-emitting elements 312 that are linearly mounted on the substrate 311 along the longitudinal direction X.

The frame member 320 has a frame bottom portion 321 formed in a long and rectangular plate shape along the longitudinal direction X, and a reinforcing portion 325 protruding from the frame bottom portion 321 toward the cover member 330. The reinforcing portion 325 includes a frame standing portion 322 extending from the substantially center of the frame bottom portion 321 in the lateral direction Y toward the cover member 330 side, that is, the lower side (Z2 side). Light-emitting bodies 310 are arranged on both sides of the frame bottom portion 321 so as to sandwich the frame standing portion 322. Further, the frame member 320 includes a frame attachment portion 323 having a slit shape provided on the surface of the frame bottom portion 321 opposite to the frame upright portion 322. The frame attachment portion 323 serves as a receiving portion (for example, instead of a tap hole) for a fixture such as a screw for fixing the power supply device 250. Although the frame attachment portion 323 is provided in FIG. 11, the installation of the frame attachment portion 323 is optional.

The cover member 330 is formed in a long shape so as to cover the light emitting body 310 and is attached to the frame member 320. The cover member 330 is formed of a diffusive material such as milky white acrylic resin and diffuses the light emitted from the light emitting body 210. The cover member 330 includes a cover front surface portion 331, a cover side portion 332, and a cover bottom portion 333 in the lateral direction Y.

The cover front surface portion 331 has an arc shape and covers the light emitting body 310. The cross section of the cover front surface portion 331 in the lateral direction has an arc shape, but may have another shape. For example, the cross section of the cover front portion 331 in the lateral direction may have a flat plate shape, a triangular shape, a quadrangular shape, or another polygonal shape. Alternatively, the cover front surface portion 331 may have a planar shape or a polyhedral shape formed of a single or a plurality of flat surfaces, or may have a shape formed of a single or a plurality of curved surfaces. The cover side portion 332 is provided on the frame bottom portion 321 side, that is, on the upper side (Z1 side) from each end of the cover front surface portion 331. The cover bottom parts 333 are formed so as to be closer to each other than the ends of the longitudinal side ends of the respective cover side parts 332. In addition, the cover bottom portion 333 is provided with a cover engaging portion 333a having a protruding shape that protrudes toward the cover front surface portion 331 side. The cover member 330 is formed such that the cover front surface portion 331, the cover side portion 332, and the cover bottom portion 333 are continuous in the longitudinal direction X.

The cover member 330 is fixed to the frame member 320 so that the cover bottom portion 333 and the cover engaging portion 333 a contact the frame bottom portion 321 of the frame member 320. At this time, the frame bottom portion 321 and the cover bottom portion 333 are provided side by side, and the frame bottom portion 321 and the cover bottom portion 333 become the unit bottom portion 301 that constitutes the bottom portion of the light source unit 300. Further, the cover front surface portion 331 and the cover side portion 332 that connect both ends of the unit bottom portion 301, which is the end portion of the cover bottom portion 333, serve as a unit emitting portion 302 that emits light from the light emitting element 312. Furthermore, when the cover member 330 is attached to the frame member 320, the cover member 330 and the frame member 320 are engaged with each other on the unit bottom portion 301 side. The cover member 330 is juxtaposed such that the unit emitting portion 302 and the frame standing portion 322 serving as the reinforcing portion 325 of the frame member 320 are spaced from each other in the lateral direction Y.

(Regarding the optical characteristics of the light source unit 300)
FIG. 12: is a figure which shows the light distribution characteristic of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention. The light distribution characteristics of the light source unit 300 will be described with reference to FIG. The light emitted from the light emitting element 312 of the light emitting body 310 has the light traveling to the optical paths A and B.

The optical path A is an optical path of the light emitted from the light emitting element 312, which directly travels toward the unit emitting section 302 and is emitted from the unit emitting section 302.

Of the light emitted from the light emitting element 312, the optical path B proceeds toward the frame upright portion 322, is reflected by the frame upright portion 322 toward the outer side in the lateral direction Y of the cover member 330, and is emitted from the unit emitting portion 302. It is an optical path.

Further, the protruding height of the frame upright portion 322 from the frame bottom portion 321 passes through a portion where the optical path A, which is a boundary with the optical path B due to the light of the optical path A, exceeds the center in the lateral direction Y of the cover front surface portion 331. Is formed.

The frame member 320 has a reinforcing portion 325 composed of a frame standing portion 322 protruding from the frame bottom portion 321 to the cover member 330 side. As a result, the frame member 320 can secure a sufficient modulus of longitudinal elasticity with respect to the frame bottom portion 321 to suppress bending in the longitudinal direction, and the rigidity of the frame member 320 can be secured. As a result, it is possible to provide the light source unit 300 and the lighting device 1 that are suppressed in the amount of protrusion from the ceiling, are thin and compact, and have sufficient rigidity.

Further, in the light source unit 300, the unit bottom portion 301 is formed substantially flat. Therefore, the light source unit 300 is suppressed from interfering with a member arranged inside the housing recess 111 of the apparatus body 100, and therefore the light source unit 300 can be easily attached to the apparatus body 100. In addition, the lighting device 1 can effectively utilize the internal space of the accommodation recess 111. Further, since the unit bottom portion 301 of the light source unit 300 is formed to be substantially flat, it does not interfere with the members and electric wires arranged inside the apparatus body.

Further, in the light source unit 300, the frame standing portion 322 serving as the reinforcing portion 325 of the frame member 320 is provided so as to form a space between the frame standing portion 322 and the unit emitting portion 302. Therefore, it is possible to ensure rigidity and emit light from the unit emitting portion 302. Therefore, the light source unit 300 and the illuminating device 1 can be reduced in size and weight.

In addition, conventional lighting devices that are directly attached to a mounting part such as a ceiling are required to be thin, and when the light source unit and the lighting device are thinned by reducing the thickness of the cover, the light emitting element is reduced. Irradiated light may not be sufficiently diffused and uneven brightness may occur. In the light source unit 300, the frame member 320 has an optical function portion including a frame upright portion 322 protruding from the center portion in the lateral direction Y of the frame bottom portion 321. By utilizing the reflection to the frame standing portion 322, the light emitted from the light emitting element 312 of the light emitting body 310 advances to the optical path A and the optical path B. As a result, light is diffused inside the cover member 330, and uneven brightness on the surface of the cover member 330 can be suppressed. Further, it is possible to suppress the graininess caused by the light of the light emitting element 212 appearing on the cover member 330 when the light is irradiated.

FIG. 13: is a figure which shows the modification of the light source unit of the illuminating device which concerns on Embodiment 2 of this invention. FIG. 14 is a diagram showing a state in which the modification of FIG. 13 of the light source unit of the illumination device according to the second embodiment of the present invention is attached to the device body. FIG. 15 is a diagram showing a state in which the device body to which the modified example of FIG. 13 of the light source unit of the lighting device according to the second embodiment of the invention is attached is attached to the attachment portion. Next, a modification of the second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 13, in the light source unit 300A, the frame member 320A has a reinforcing portion 325A, and the reinforcing portion 325A has a frame standing portion 322A extending so as to provide the frame housing portion 340. The frame upright portion 322A is configured as a recess formed in the frame bottom portion 321A.

The frame housing portion 340 can house the power supply device 350 as shown in FIG. Further, in the frame housing portion 340, an electric wire or the like that connects the power supply device 350 and the light emitting body 310 can be arranged in a portion of the frame housing portion 340 where the power supply device 350 is not housed.

The frame accommodating portion 340 is configured as a concave portion, and the upper side (Z1 side) is open. The frame housing portion 340 may close the opening of the frame housing portion 340 using a lid 351 or the like. By closing the opening of the frame housing portion 340, it is possible to prevent the power supply device 350 and the electric wires from being damaged by the members arranged in the device body 100 when the light source unit 300A is attached to the device body 100.

Further, by accommodating the power supply device 350 and the like in the frame accommodating portion 340, the number of members disposed in the internal space of the accommodating recess 111 of the device body 100 is reduced, and the light source unit 300A can be easily attached to the device body 100. ..

Further, by accommodating the elongated power source device 350 of the frame accommodating portion 340, the outer case of the power source device 350 serves as a reinforcing member in the light source unit 300A, and further rigidity can be obtained.

Further, when the light source unit 300 is formed to be longer, a reinforcing member may be provided in the frame housing portion 340, or a connecting member for connecting the plurality of frame members 320 may be provided. By disposing the reinforcing member or the connecting member in the frame accommodating portion 340, the light source unit 300A can obtain further rigidity.

Further, as shown in FIG. 15, a fixture 370 such as a bolt for fixing the apparatus main body 100 to the mounted portion 360 may be inserted into the frame housing portion 340. By allowing the fixture 370 to be inserted into the frame accommodating portion 340, the allowable range of the dimensional tolerance of the fixture 370 is increased, and the construction of the lighting device 1 can be facilitated.

Embodiment 3.
FIG. 16 is an exploded perspective view of a light source unit of the lighting device according to the third embodiment of the present invention. FIG. 17 is a sectional view of a light source unit of the lighting device according to the third embodiment of the present invention. Portions having the same configurations as those of the illumination device of FIGS. 1 to 15 are designated by the same reference numerals, and the description thereof will be omitted. The light source unit 400 of the lighting device according to the third embodiment of the present invention is one in which the size and weight of the frame are reduced. The frame member 420 and the cover member 430 that are different in shape from the light source units 200 and 300 of the lighting device according to the first and second embodiments of the present invention will be mainly described.

The configuration of each part of the light source unit 400 will be described with reference to FIGS. 16 and 17. The light source unit 400 includes a light emitting body 410 having a plurality of light emitting elements, a frame member 420 to which the light emitting body 410 is attached, and a cover member 430 attached to the frame member 420 so as to cover the light emitting body 410. There is.

The light-emitting body 410 includes a substrate 411 that is elongated along the longitudinal direction X, and a plurality of light-emitting elements 412 that are linearly mounted on the substrate 411 along the longitudinal direction X.

The frame member 420 has a frame bottom portion 421 formed in a long rectangular plate shape along the longitudinal direction X, and a reinforcing portion 425 protruding from the frame bottom portion 421 toward the cover member 430. The reinforcing portion 425 has frame upright portions 422 formed so as to be apart from each other in the lateral direction Y of the frame bottom portion 421. The frame upright portion 422 also plays a role of a reflection function, and the frame upright portion 422 having a reflection function can improve light emission efficiency.

The cover member 430 is formed in a long shape so as to cover the light emitting body 410 and is attached to the frame member 420. The cover member 430 is made of a diffusive material such as milky white acrylic resin, and diffuses the light emitted from the light emitting body 410. The cover member 430 has a cover front surface portion 431, a cover side portion 432, a cover bottom portion 433, and an inner cover portion 434 in the lateral direction Y.

The cross section of the cover front portion 431 in the lateral direction has an arc shape, but may have another shape. For example, the cross section of the cover front part 431 in the lateral direction may have a flat plate shape, a triangular shape, a quadrangular shape, or another polygonal shape. Alternatively, the cover front surface portion 431 may have a planar shape or a polyhedral shape formed by a single or a plurality of flat surfaces, or may have a shape formed by a single or a plurality of curved surfaces. The cover side portion 432 is provided on the frame bottom portion 421 side, that is, on the upper side (Z1 side) from each end portion of the cover front surface portion 431. The cover bottom portions 433 are formed so as to be closer to each other than the ends of the longitudinal side ends of the respective cover side portions 432. The inner cover portion 434 is formed so as to connect the pair of cover bottom portions 433, and faces the light emitting body 410. The cross section of the inner cover portion 434 in the lateral direction has an arc shape, but may have another shape. For example, the cross section of the inner cover portion 434 in the lateral direction may have a flat plate shape, a triangular shape, a quadrangular shape, or another polygonal shape. Alternatively, the inner cover portion 434 may have a planar shape or a polyhedral shape formed of a single or a plurality of flat surfaces, or may have a shape formed of a single or a plurality of curved surfaces. Between the cover bottom portion 433 and the inner cover portion 434, a cover engaging portion 433a into which the frame standing portion 422 is inserted is provided. The cover member 430 is formed such that the cover front portion 431, the cover side portion 432, the cover bottom portion 433, and the inner cover portion 434 are continuous in the longitudinal direction X.

As shown in FIG. 17, the cover member 430 is fixed to the frame member 420 by inserting the end of the frame upright portion 422 of the frame member 420 into the cover engaging portion 433 a. At this time, the frame bottom portion 421 and the cover bottom portion 433 are provided side by side, and the frame bottom portion 421 and the cover bottom portion 433 become the unit bottom portion 401 that constitutes the bottom portion of the light source unit 300. Further, the cover front part 431 and the cover side part 432 which connect both ends of the unit bottom part 401 which is the end part of the cover bottom part 433 serve as a unit emitting part 402 which emits light from the light emitting element 412. The cover member 430 is formed so that the unit emitting portion 402 and the inner cover portion 434 do not come into contact with each other, and a space is provided between the unit emitting portion 402 and the inner cover portion 434. Further, the unit emitting portion 402 is formed to have high transmission performance, and the inner cover portion 434 is formed to have high diffusion performance.

(Regarding the optical characteristics of the light source unit 400)
FIG. 18 is a diagram showing a light distribution characteristic of the light source unit of the lighting device according to the third embodiment of the present invention. The light distribution characteristics of the light source unit 400 will be described with reference to FIG. Light emitted from the light emitting element 412 of the light emitting body 410 is diffused in the inner cover portion 434 and controlled to have a wide-angle light distribution. The light whose distribution is controlled is emitted from the unit emitting unit 402.

In the light source unit 400, since the cover member 430 is formed in a double structure, the inner cover portion 434 serves as a reinforcing member. Therefore, the rigidity of the cover member 430 is improved, and the rigidity of the light source unit 400 can be ensured. As a result, the frame member 420 can have a simple structure, and the light source unit 400 and the illuminating device 1 can be reduced in size and weight.

Further, light is diffused by the inner cover portion 434. As a result, the light source unit 400 and the illuminating device 1 can suppress the brightness unevenness appearing on the surface of the cover member 430 even if the light source unit 400 and the lighting device 1 are downsized and lightened. Further, it is possible to suppress the graininess caused by the light of the light emitting element 412 appearing on the cover member 430 when the light is irradiated.

The embodiment of the present invention is not limited to the above-described first to third embodiments. For example, in the light source unit 200 of the illumination device according to the first embodiment of the present invention, two light emitting elements 212 are provided in the lateral direction Y, but the number is not limited to two and may be one. However, the number may be three or more. Further, the engagement means of the cover member 230 and the frame member 220 is an example, and any means may be used as long as it does not impair the light distribution characteristics. For example, the cover bottom portion 233 is provided with a cover engaging portion 233a composed of two protrusions protruding toward the cover front surface portion 231. However, the cover engaging portion 233a includes one protrusion protruding toward the cover front surface portion 231. May be

Further, in the light source unit 400 of the lighting device according to the third embodiment of the present invention, the cover member 430 may be integrally formed by a two-color molding method, or may be formed by connecting and forming separate members. Further, the unit emitting section 402 may also be provided with a diffusing property so as to be diffused over two layers.

1 illumination device, 100 device body, 110 mounting portion, 111 housing recess, 111a bottom portion, 111aa power supply inlet hole, 111ab fixing hole, 111b side portion, 111c opening, 112 collar portion, 113 inclined portion, 120 side plate, 121 side plate body portion , 122 side plate flange portion, 130 terminal block, 131 terminal block main body portion, 132 terminal block connection portion, 132a terminal block wire, 132b terminal block connector, 140 spring, 141 spring fixing portion, 142 spring arc portion, 143 spring tip portion, 200 light source unit, 201 unit bottom, 202 unit emitting part, 210 light emitter, 211 substrate, 212 light emitting element, 220 frame member, 221 frame bottom part, 222 frame upright part, 223 frame slanted part, 223a slanted part end part, 225 reinforcement Part, 230 cover member, 231 cover front part, 232 cover side part, 233 cover bottom part, 233a cover engaging part, 240 lid, 241 lid end surface, 242 lid side surface, 250 power supply device, 260 connecting metal fitting, 261 metal fitting fixing portion, 262 spring connecting portion, 262a connecting opening portion, 300 light source unit, 300A light source unit, 301 unit bottom portion, 302 unit emitting portion, 310 light emitter, 311 substrate, 312 light emitting element, 320 frame member, 320A frame member, 321 frame bottom portion, 321A frame bottom part, 322 frame upright part, 322A frame upright part, 323 frame mounting part, 325 reinforcing part, 325A reinforcing part, 330 cover member, 331 cover front part, 332 cover side part, 333 cover bottom part, 333a cover engaging part 340 frame accommodating portion, 350 power supply device, 351 lid, 360 attached portion, 370 fixture, 400 light source unit, 401 unit bottom portion, 402 unit emitting portion, 410 light emitter, 411 substrate, 412 light emitting element, 420 frame member, 421 frame bottom part, 422 frame upright part, 425 reinforcing part, 430 cover member, 431 cover front part, 432 cover side part, 433 cover bottom part, 433a cover engaging part, 434 inner cover part.

Claims (10)

A light source unit detachably attached to a device body attached to a mounting portion such as a ceiling, and electrically connected to the device body,
A light emitting body having a substrate and a light emitting element mounted on the substrate;
A frame member to which the luminous body is attached to the bottom,
A cover member attached to both side ends of said frame members so as to cover the light emitting element,
Equipped with
Said frame member, and projecting toward the cover member from the bottom, with a reinforcing portion that is covered by the cover member, the light source unit. The frame member is formed in an elongated shape, the bottom portion is rectangular,
The reinforcing portion includes a pair of frame upright portions extending toward the cover member from respective side edges of the bottom portion in the longitudinal direction, and a frame inclined portion formed in a direction away from the tips of the frame upright portions. The light source unit according to claim 1, further comprising: The light source unit according to claim 2, wherein the frame standing portions are provided so as to face each other. The frame inclined portion has a surface on the side of the cover member formed at an acute angle with respect to the bottom portion in the lateral direction of the bottom portion, and the inclined surface of the frame inclined portion faces outward. The light source unit according to item 3. The frame member is formed in an elongated shape, the bottom portion is rectangular,
The reinforcing portion, the bottom portion protrudes toward the substantially center on the cover member side in the lateral direction of, has a frame upright portion to be covered with the cover member,
The light source unit according to claim 1, wherein the light emitters are arranged on both sides of the frame standing portion. The light source unit according to claim 5, wherein the frame standing portion is configured as a recess formed in the bottom portion. Further comprising a power supply device for supplying lighting power to the luminous body,
The light source unit according to claim 6, wherein the power supply device is installed in the recess. The light source unit according to claim 1, wherein the cover member has an inner cover portion in a space between the frame member and the cover member so as to cover the light emitting body. The cover member includes a cover front portion formed in an arc shape in the lateral direction, a pair of cover side portions protruding toward the bottom portion from respective sides of the cover front portion that face each other in the longitudinal direction, and A cover bottom portion formed so as to be closer to each other than an end portion of the cover side portion,
The light source unit according to any one of claims 2 to 8, wherein the cover bottom portion engages with respective longitudinal side end portions of the frame member that face each other in the longitudinal direction. An illumination device comprising the light source unit according to claim 1.

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