JP2015158989A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which enables improvement of the workability when a detachable member is attached to a bottom surface part of a housing.SOLUTION: A lighting device according to one embodiment includes: a housing which stores a light source part and has heat radiation fins and an edge part at a periphery of the light source part; a fixing member having claw parts which hook on the edge part, the fixing member which rotates around the light source part thereby being attached to or detached from the radiation side of the light source part in the housing; and a reflection member which is supported by the fixing member and reflects light from the light source part.

Description

  Embodiments described herein relate generally to a lighting device.

  Conventionally, there is a lighting device installed on the ceiling of a store or the like. In such a lighting device, a detachable member such as a reflective umbrella may be attached to the bottom surface of the housing. The attachment / detachment member attached to the bottom surface portion of the housing is likely to fall downward due to its own weight, and workability when attaching the attachment / detachment member to the bottom surface portion of the housing is poor.

JP 2012-33331 A

  The problem to be solved by the present invention is to provide an illuminating device capable of improving workability when attaching a detachable member to a bottom surface portion of a housing.

  The illuminating device of the embodiment houses a light source part, has a casing having a heat radiation fin and an edge around the light source part, and a claw part applied to the edge, and on the irradiation side of the light source part in the casing, A fixing member that can be attached and detached by rotation around the light source unit, and a reflecting member that is supported by the fixing member and reflects light from the light source unit.

FIG. 1 is a front view showing a lighting device according to the embodiment. FIG. 2 is a perspective view illustrating the lighting device according to the embodiment. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a bottom view showing the lower housing. FIG. 5 is a perspective view showing the reflector umbrella fixing member. FIG. 6 is an exploded perspective view illustrating the assembly of the reflective umbrella to the lower housing. FIG. 7 is a bottom view of the state in which the reflector is assembled to the lower housing.

  Hereinafter, an illumination device according to an embodiment will be described with reference to the drawings. In the embodiment, configurations having the same functions are denoted by the same reference numerals, and redundant description is omitted. In addition, the illuminating device demonstrated by the following embodiment only shows an example, and does not limit embodiment. In addition, the following embodiments may be appropriately combined within a consistent range.

  The lighting device 1 according to the embodiment described below houses the light source unit 202, the lower housing 20 having the heat radiation fin 205 and the edge 216 around the light source unit 202, and the claw portion 112 applied to the edge 216. The lower casing 20 is supported on the irradiation side of the light source section 202 in the lower casing 20 by the reflecting umbrella fixing member 101 that can be attached and detached by rotation about the light source section 202 and the reflecting umbrella fixing member 101. And a reflector 10 that reflects light from the head.

  In the lighting device 1 according to the embodiment described below, the reflector fixing member 101 is provided with an opening 114 through which light from the light source unit 202 passes.

  Further, in the lighting device 1 according to the embodiment described below, the edge portion 216 has different protrusion lengths, and has edges 214 and 215 having steps in the circumferential direction around the light source portion 202, and a claw portion. 112 is applied to the edge 215 having a long overhanging length at the edge 216 by the rotation of the reflector fixing member 101 around the light source unit 202, and deviates from the edge 214 having a short overhanging length at the edge 216.

  Moreover, in the illuminating device 1 concerning embodiment described below, the flange part 213 is provided with two or more at equal intervals in the circumferential direction.

(Embodiment)
[External appearance of lighting device]
FIG. 1 is a front view showing a lighting device 1 according to the embodiment. FIG. 2 is a perspective view showing the lighting device 1 according to the embodiment. As illustrated in FIG. 1, the lighting device 1 is a hanging type that is suspended from the ceiling 2, and includes a reflector 10, a lower housing 20, an upper housing 30, and a hanging portion 40.

  The suspension unit 40 is a member that suspends the upper housing 30 from the ceiling 2, and includes a ceiling attachment device 41, a chain 42, and a top plate attachment device 43. The ceiling fixture 41 is, for example, a bowl-shaped member that is directly attached to the ceiling 2, and connects one end of the chain 42 at the lower part. The chain 42 has a length that is suspended from the ceiling 2, and a top plate attachment device 43 is connected to the tip side that is suspended from the ceiling attachment device 41. As shown in FIG. 2, the top plate attachment tool 43 is an eyebolt or the like, and is attached to the central portion of the top plate 302 at the top of the upper housing 30.

  The reflecting umbrella 10 is formed in an open umbrella shape by sheet metal such as galvanized steel sheet. The reflector 10 is a member that is detachably attached to the lower portion of the lower housing 20, reflects the light emitted from the lower housing 20 on the inner wall surface, adjusts the irradiation direction, and moves downward (Y-axis direction). Irradiate.

  The lower housing 20 is attached to the lower portion of the upper housing 30 and emits light from a light source module 207 (see FIG. 3) housed inside covered with the heat dissipation unit 201. The heat dissipating unit 201 is made of die-casting using an alloy such as zinc, aluminum, and magnesium having high thermal conductivity.

  The upper housing 30 includes a cover member 301 made of, for example, a sheet metal such as a galvanized steel plate, and a top plate 302, and power is supplied to the light source module 207 inside the cover member 301 and the top plate 302. A power supply unit 307 (see FIG. 3) for supply is accommodated. The cover member 301 is a cylindrical member that covers the bottom and the outer periphery of the side surface. The top plate 302 is a circular member that covers the opening in the upper part of the cover member 301. The top plate 302 is provided with a top plate mounting tool 43 at the center, and is provided with a bush 303 for passing a power / signal cable (not shown) and a screw hole 304 for passing a screw (not shown).

  The diameter of the top plate 302 is shorter than the diameter of the opening in the upper part of the cover member 301. Therefore, in the configuration in which the opening portion in the upper part of the cover member 301 is covered with the top plate 302, a gap S1 is formed between the upper edge of the cover member 301 and the outer peripheral edge of the top plate 302. Specifically, gaps S <b> 1 that are equidistant from the outer peripheral edge of the top plate 302 are formed. By this gap S1, air can enter and exit between the inside and the outside of the upper housing 30. The gap S1 is not so large because dust intrudes into the upper housing 30 as much as possible, and is large enough to allow air warmed inside the upper housing 30 to escape to the outside. It is preferable to be formed.

[Example of internal configuration of lighting device]
FIG. 3 is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 3, the reflector 10 is attached to the lower portion of the lower housing 20 via the reflector fixing member 101. The reflector fixing member 101 is an annular member that is formed of a sheet metal such as a galvanized steel plate and has an opening through which light from the light source unit 202 passes. The reflecting umbrella fixing member 101 supports the reflecting umbrella 10 with a flange 111 protruding outward at the edge of the ring, and is attached to the lower housing 20 with a screw 102 in a state where the opening of the ring is aligned with the position of the light source unit 202. It is done.

  The lower housing 20 includes a light source unit 202 inside the heat dissipation unit 201. The light source unit 202 includes, for example, a cylindrical light source storage unit 203 provided with an opening downward. The light source unit 202 is provided on a shaft 204 provided substantially at the center of the heat radiating unit 201, and is supported by a plurality of heat radiating fins 205 provided radially around the shaft 204 toward the outer periphery of the heat radiating unit 201. A light source module mounting portion 206 is provided on the upper portion of the light source storage portion 203, and the light source module 207 is mounted downward. The light source module mounting portion 206 is made of, for example, a metal having high thermal conductivity, and also plays a role of releasing heat generated from the light source module 207 to the heat radiating fins 205. In the light source module 207, a light emitting element such as an LED (Light Emitting Diode) is mounted on a predetermined surface of the substrate, and a surface opposite to the surface on which the light emitting element is mounted is mounted on the light source module mounting portion 206.

  A reflection plate 208 is provided below the light source module 207. The reflecting plate 208 is made of, for example, a synthetic resin such as an ABS resin or a metal such as an aluminum die cast, and is formed in a shape in which a bowl with its upper and lower ends opened in a substantially circular shape is turned down. The reflector 208 reflects the light emitted from the light source module 207. A plate glass 209 is attached to the lower opening portion of the reflection plate 208 with a screw 210 via a glass holding member 211. The plate glass 209 plays a role of diffusing light from the light source module 207 and preventing dust from entering the light source module 207. The glass restraining member 211 is an annular member that is formed of, for example, a sheet metal such as a galvanized steel plate and has an opening through which light from the light source unit 202 passes.

  A bush that passes through the bottom plate portion 305 of the upper housing 30 and a screw hole that is screwed to the bottom plate portion 305 are provided in the upper portion of the lower housing 20. The upper portion of the lower housing 20 and the bottom plate portion 305 of the upper housing 30 are screwed after passing through the bush. The bush is inserted to the light source storage unit 203 and allows cables (power supply lines, signal lines, etc.) from the upper housing 30 to pass through the light source module 207.

  The upper housing 30 includes a power supply base 306, a power supply unit 307, and a heat radiating plate 310 inside the cover member 301. The power base 306 is, for example, an arch-shaped sheet metal that is erected from both sides and has a flat surface at the center, and is attached to the inner upper surface of the bottom plate portion 305 of the cover member 301. A power supply unit 307 is attached to the upper surface of the central portion (arch-shaped top portion) of the power supply base 306 with screws or the like.

  In this way, the heat generated by the power supply unit 307 can be released via the power supply base 306 by attaching the power supply unit 307 via the power supply base 306 without directly attaching the power supply unit 307 to the bottom plate part 305. The heat dissipation can be improved. In addition, a power supply unit 307 is attached to the top portion of the arch shape of the power supply base 306, and the power supply unit 307 is in a form floating from the bottom plate unit 305. Therefore, since the passage of wind is improved around the power supply unit 307, the heat dissipation is higher.

  The power supply unit 307 includes substrates 308 and 309. The boards 308 and 309 are connected to the power / signal cable from the bush 303, generate driving power for turning on / off / dimming the light source module 207, and output the driving power to the light source module 207. A heat radiating plate 310 is attached to the upper surface of the power supply unit 307 with screws or the like. The heat radiating plate 310 is, for example, a metal plate having high thermal conductivity. The heat radiating plate 310 has a shape standing at the central portion, and is joined to the power supply unit 307 on the flat surface on one end side and is thermally bonded to the top plate 302 on the flat surface on the other end side with the standing portion as a boundary. The heat radiating plate 310 is attached to the top plate 302 by welding or the like, for example.

  In this way, the heat generated by the power supply unit 307 can be released via the heat dissipation plate 310 by attaching the power supply unit 307 via the heat dissipation plate 310 without directly attaching the power supply unit 307 to the top plate 302. The heat dissipation can be improved. Further, the power supply unit 307 is separated from the top plate 302 by the standing portion of the heat sink 310. Therefore, since the passage of wind is improved around the power supply unit 307, the heat dissipation is higher.

  Further, the power base 306, the power source unit 307, and the heat radiating plate 310 are attached in the order of the power base 306, the power source unit 307, and the heat radiating plate 310 upward from the bottom plate portion 305 of the cover member 301. A top plate 302 is attached to the top of the heat radiating plate 310. For this reason, when the lighting device 1 is suspended from the ceiling 2, it is not supported via the outer peripheral wall surface of the cover member 301, but is attached in order from the bottom plate portion 305 to the top plate 302. The power base 306, the power source 307, and the heat sink 310 are supported. That is, the power supply base 306, the power supply unit 307, and the heat radiating plate 310 that are sequentially attached between the bottom plate portion 305 and the top plate 302 also serve as attachment members from the ceiling 2. As described above, since the attachment member from the ceiling 2 is attached to the bottom plate portion 305 of the cover member 301, the gap S1 is formed between the upper edge of the cover member 301 and the outer edge of the top plate 302. Is possible.

[Assembly example of the reflective umbrella to the lower housing]
FIG. 4 is a bottom view showing the lower housing 20. FIG. 5 is a perspective view showing the reflector fixing member 101. FIG. 6 is an exploded perspective view illustrating the assembly of the reflector 10 to the lower housing 20. FIG. 7 is a bottom view of the state in which the reflector 10 is assembled to the lower housing 20. In FIG. 6, in order to make it easier to see how the reflector 10 is assembled to the lower housing 20, the reflector 10 is drawn in a two-dot chain line to be in a semi-transparent state.

  As shown in FIG. 4, on the bottom surface side of the lower housing 20, an edge 216 is provided on the outer periphery of the light source storage unit 203 corresponding to the attachment position of the annular reflector fixing member 101. The edge portion 216 is provided with a screw hole 212 for receiving the screw 102 and a flange portion 213. Specifically, when the opening portion of the reflector fixing member 101 is aligned with the opening portion (the portion where the plate glass 209 is provided) through which light from the light source unit 202 passes, the edge to which the annular annular plate 110 of the reflector umbrella fixing member 101 is attached. The part 216 is provided with three sets of screw holes 212 and a flange part 213. More specifically, in the circumferential direction of a circle having the same center as the center O of the opening portion through which light from the light source unit 202 passes (hereinafter referred to as the circumferential direction), three sets of screw holes 212 and flange portions are equally spaced. 213 is provided.

  The outer periphery (flange portion 213) of the edge portion 216 of the light source storage portion 203 is provided with edges 214 and 215 having different projecting lengths between the plurality of radially provided heat radiation fins 205, and from the center O to the edge 214. The length r2 from the center O to the edge 215 is longer than the length r1, and the shape has a step in the circumferential direction. Specifically, an edge 214 having a short length in the protruding direction is provided at a position away from the screw hole 212, and an edge 215 having a long length in the protruding direction is provided at a position near the screw hole 212. For this reason, when it rotates clockwise from the center O, the level | step difference of the light source storage part 203 becomes high (the length from the center O to an edge becomes long) as it approaches the screw hole 212. FIG.

  As shown in FIG. 5, the reflector fixing member 101 includes an annular plate 110 attached to the bottom surface side of the lower housing 20, an outer peripheral wall 110a provided on an edge of the annular plate 110, and outward from the outer peripheral wall 110a. A protruding flange 111 is provided. The annular plate 110 supports the reflector 10 by hanging the inner wall of the reflector 10 on the protruding edge. The annular plate 110 forms an opening 114 having a size corresponding to an opening through which light from the light source unit 202 passes. For example, the opening 114 may have a substantially same diameter as the opening through which light from the light source unit 202 passes or a slightly larger circular shape, and preferably does not block the light from the light source unit 202.

  On the annular plate 110, three sets of claw portions 112 and dharma holes 113 are also provided at positions corresponding to the three sets of screw holes 212 and the flange portion 213 on the bottom surface of the lower housing 20. More specifically, the claw portion 112 is provided corresponding to the flange portion 213, and the dharma hole 113 is provided corresponding to the screw hole 212.

  The claw portion 112 has a shape in which a tip portion rising upward is bent inward, and is formed at a position of a length r3 in the outward direction from the center O. The length r3 is substantially the same as the length r2, and is longer than the length r1. For this reason, when the center O of the reflector umbrella fixing member 101 is aligned with the center O of the lower casing 20, the reflector umbrella fixing member 101 is attached to the lower casing 20 at the edge 214 portion of the flange portion 213 without hooking the claw portion 112. Can be pressed against the bottom of When the reflector umbrella fixing member 101 is rotated clockwise and the claw portion 112 is at the edge 215 portion of the flange portion 213, the claw portion 112 is caught by the edge 215, and the reflector umbrella fixing member 101 is in the vertical direction. To prevent falling.

  The dharma hole 113 is a hole for screwing the reflector umbrella fixing member 101 to the lower housing 20 through a screw attached to the screw hole 212. Specifically, after passing the screw attached to the screw hole 212 through the large-diameter portion of the dharma hole 113, the screw is rotated clockwise and screwed at the small-diameter portion, so that the large-diameter portion and the small-diameter in the circumferential direction are fixed. The shape is lined with parts.

  In assembling the reflector 10 to the lower housing 20, as shown by the dotted line in FIG. 6, the reflector umbrella fixing member on which the claws 112 are placed immediately below the edge 214 of the flange 213 and the reflector 10 is placed. 101 is pressed against the bottom surface of the lower housing 20. Next, the reflector fixing member 101 is rotated clockwise to perform screwing at the small diameter portion of the dharma hole 113.

  As shown in FIG. 7, when screwing at the small diameter portion of the dharma hole 113, the claw portion 112 is caught by the edge 215 of the flange portion 213, and the operator does not hold the reflector fixing member 101 by hand. Screwing work can be performed. Therefore, the operator can concentrate on the work without worrying about the fall due to the weight of the reflector 10 and the workability when attaching the reflector 10 is improved.

(Effect of embodiment)
As described above, in the lighting device 1 according to the embodiment, the light source unit 202 is housed, the lower housing 20 having the heat radiation fin 205 and the edge 216 around the light source unit 202, and the claw applied to the edge 216. And a reflector umbrella fixing member 101 that is attachable and detachable by rotation around the light source section 202 and is supported by the reflector umbrella fixing member 101 on the irradiation side of the light source section 202 in the lower casing 20. And a reflector 10 that reflects light from the body 20. For this reason, according to the illuminating device 1 concerning embodiment, the fall of the reflector fixing member 101 can be prevented by attaching the nail | claw part 112 to the edge part 216, and the reflector fixing member 101 of the lower housing | casing 20 is attached. Workability can be improved. In addition, since the structure includes the heat dissipating fins 205 around the light source unit 202, it is possible to form an edge 216 that protrudes between the heat dissipating fins 205. Further, the reflector 10 can be easily attached and detached by rotating the reflector fixing member 101 with the same axis as the center O of the light source unit 202.

  In the lighting device 1 according to the embodiment, the reflector fixing member 101 is provided with an opening 114 through which light from the light source unit 202 passes. For this reason, according to the illuminating device 1 concerning embodiment, the light from the light source part 202 is not blocked | interrupted by the reflector fixing member 101. FIG.

  In the lighting device 1 according to the embodiment, the edge portion 216 has different projecting lengths and has edges 214 and 215 having steps in the circumferential direction around the light source portion 202, and the claw portion 112 has a light source By the rotation of the reflector fixing member 101 around the portion 202, the edge 216 is applied to the edge 215 having a long overhang length, and is disengaged from the edge 214 having a short overhang length. For this reason, according to the illuminating device 1 concerning embodiment, since the nail | claw part 112 is hung on the edge 215, a screwing operation | work etc. can be performed, without suppressing the reflector umbrella fixing member 101 by hand. Further, by rotating the reflector umbrella fixing member 101 around the light source unit 202, the claw portion 112 can be removed from the edge 214 having a short overhanging length at the edge portion 216, and the reflector umbrella fixing member 101 can be easily removed. Can do.

  Moreover, in the illuminating device 1 concerning embodiment, the flange part 213 is provided with two or more at equal intervals in the circumferential direction. According to the lighting device 1 according to the embodiment, the screw 102 can be stably supported by hooking the claw portion 112 at each of the edges 215 provided on the plurality of flange portions 213.

  Moreover, the shape, raw material, and material of each member which concern on the said embodiment are not restricted to the example described in embodiment or each figure. For example, the lower housing 20 and the upper housing 30 are illustrated in a columnar shape, but may have a prismatic shape. The illustrated attaching / detaching member may be any member that can be attached to and detached from the bottom surface portion of the lower housing 20, and is not limited to the reflecting umbrella fixing member 101 for attaching the reflecting umbrella 10. For example, a net-like protective member that protects the light source unit 202 may be used.

  As described above, according to the above embodiment, the workability when attaching the detachable member to the bottom surface portion of the housing can be improved.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1, 1a ... Lighting apparatus, 2 ... Ceiling, 10 ... Reflecting umbrella, 20 ... Lower housing | casing, 30, 30a ... Upper housing | casing, 40 ... Hanging part, 101 ... Reflecting umbrella fixing member, 102 ... Screw, 110 ... Ring Plate, 111 ... Flange, 112 ... Claw part, 113 ... Dalma hole, 114 ... Opening part, 201 ... Heat dissipation unit, 202 ... Light source part, 207 ... Light source module, 212 ... Screw hole, 213 ... Flange part, 214, 215 ... Edge, 301 ... Cover member, 302 ... Top plate, 304 ... Screw hole, 305 ... Bottom plate part, 306 ... Power supply base, 307 ... Power supply unit, 310 ... Heat sink, 350 ... Top plate, O ... Center, r1, r2, r3 ... length

Claims (3)

A housing that houses the light source section and has heat radiation fins and edges around the light source section;
A fixing member that has a claw portion on the edge portion, and can be attached to and detached from the irradiation side of the light source unit in the housing by turning around the light source unit;
A reflecting member supported by the fixing member and reflecting light from the light source unit;
A lighting device comprising: The fixing member is provided with an opening through which light from the light source unit passes.
The lighting device according to claim 1. The edges are different from each other in the overhang length, and have an edge with a step in the circumferential direction around the light source part,
The claw portion is applied to the edge having a long overhanging length at the edge portion by the rotation of the fixing member around the light source portion, and comes off from the edge having a short overhanging length at the edge portion,
The lighting device according to claim 1 or 2.

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