JP5812349B2 - Lighting device - Google Patents

Description

  Embodiments described herein relate generally to an illumination device using a light emitting element such as an LED.

  There has been provided an illuminating device in which a plurality of light emitting elements such as LEDs are mounted as a light source on a substrate to obtain a predetermined light amount. This illuminating device is used as, for example, a downlight embedded in a ceiling surface.

  The downlight is, for example, a device main body having heat radiating fins and mounting springs on the outer surface, a light source (light emitting body) on which an LED is mounted on a substrate, and a reflection for controlling light distribution individually for each LED. And a baffle (frame body) for fixing the apparatus main body to the ceiling surface by an attachment spring of the apparatus main body and the decorative frame. The light source, the reflector, and the baffle are each attached to the lower surface side of the apparatus main body with a fixing screw.

JP 2010-16003 A (7th page, FIG. 3)

  In assembling the downlight, the operation of screwing the light source, the reflector, and the baffle to the apparatus main body has a drawback that it takes time and reduces the work efficiency of the assembly.

  An object of the present embodiment is to provide an illuminating device that improves the work efficiency of assembly.

  The illuminating device of this embodiment includes a light emitter, a device main body, a frame, a locking piece, and a power supply device.

  The light emitter is formed to include a substrate and a light emitting element mounted on one surface side of the substrate.

  The apparatus main body is disposed so that the other surface side of the substrate of the light emitter is in close contact, and is provided with an insertion hole that opens toward the one surface side of the substrate.

  The reflector is provided on one surface side of the substrate and reflects the emitted light of the light emitting element.

  The frame is provided on the one surface side of the substrate, and the main part is located below the reflector.

  The locking portion is provided on one of the reflector and the frame, and a support portion that supports the other on the apparatus main body side and a locking claw at the tip are inserted into the insertion hole and elastically locked to the apparatus main body. One of the locking pieces is attached to the apparatus main body.

  The power supply device is configured to supply power to the light emitting element.

  According to the embodiment of the present invention, the light emitting body, the reflector, and the frame body are fixed to the apparatus main body by the locking claw of the locking piece being elastically locked to the apparatus main body. It can be expected that the working time can be shortened.

It is a perspective view which shows the illuminating device which concerns on the 1st Embodiment of this invention. It is a front view which cuts and shows the same part. It is a side view which shows the state which attached the lighting device to the ceiling surface. It is a partially expanded sectional view which shows the illuminating device which concerns on the 2nd Embodiment of this invention.

  Hereinafter, a light source unit and an illumination device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

  1 and 3, a downlight main body 1 includes a cylindrical main body 2 as a heat conductive apparatus main body, a decorative frame 3 as a frame attached to the cylindrical main body 2, and a cylindrical main body 2. A substrate 4 mounted on the inside and mounted with an LED 10 as a light emitting element as a light source, and a reflector 6 and a translucent cover 7 disposed in front of the reflector 6 are provided. The light emitter is constituted by the substrate 4 and the LED 10. A power receiving connector 9 is disposed on the upper outer surface of the cylindrical main body 2.

  A pair of leaf springs 8 for attachment are attached to the decorative frame 3 and are attached to the cylindrical main body 2 so that a main portion including the leaf springs 8 is located below the reflector 6. . The substrate 4 and the reflector 6 constitute a light source unit.

  The cylindrical main body 2 is formed of a material having good heat conductivity made of aluminum die casting, and its outer surface is baked and coated with a white melamine resin-based paint. The cylindrical body 2 is

The back surface side of the substrate 4 of the light emitter has a base portion 2a that is in close contact, and a plurality of heat radiation fins 2b extending in the vertical direction from the base portion 2a are formed. Further, a plurality of insertion holes 2c are formed in the base portion 2c of the cylindrical main body 2 where the heat dissipating fins 2b are not formed, and an inner accommodating space for accommodating the substrate 4 and the reflector 6 and the heat dissipating fins 2b are formed. The outer space is in communication.

  The substrate 4 has a substantially circular plate shape, and on the surface side, a plurality of LEDs 10 serving as a light source are surface-mounted, specifically, four in the center, eight in the periphery, and further on the outermost periphery. A total of 26 14 pieces are mounted. The substrate 4 is made of a substantially circular flat plate made of glass epoxy resin and is thermally coupled to the cylindrical main body 2. In addition, when the material of the substrate 4 is an insulating material, a ceramic material or a synthetic resin material having relatively good heat dissipation characteristics and excellent durability can be applied. Moreover, when using metal, it is preferable to apply a material having good thermal conductivity such as aluminum and excellent heat dissipation.

  On the surface side of the substrate 4, a reflector 6 made of white polycarbonate, ASA resin or the like is disposed. The reflector 6 has a function of efficiently irradiating light emitted from the LEDs 10 by individually controlling the light distribution for each LED 10. The power receiving connector 9 is electrically connected to the LED 10 via a terminal provided on the substrate 4, and is provided so as to protrude in the outer peripheral direction of the cylindrical main body 2.

  The locking part 20 includes a locking piece 21 and a support part 22. In the present embodiment, the locking portion 20 is provided integrally with the decorative frame 3. The locking piece 21 is provided so as to be elastically swingable from the upper end edge of the decorative frame 3 so as to be located outside the outer periphery of the reflector 6, and the locking claw at the tip is inserted into the insertion hole 2 c. It is elastically locked to the substrate portion 2a of the cylindrical main body 2. In a state where the locking piece 21 is locked, the reflector 6 is supported in a state where the lower peripheral edge of the reflector 6 is engaged with a support portion 22 formed of a step portion formed inside the upper edge of the decorative frame 3. By supporting the reflector 6, the substrate 4 is also brought into contact with the inner surface of the substrate portion 2a, so that the heat of the LED 10 is efficiently conducted to the radiation fins 2b.

  As described above, according to the present embodiment, the locking claw of the locking piece 21 is elastically locked to the cylindrical main body 2, so that the light emitting body (substrate 4, LED 10) and reflection are reflected on the cylindrical main body 2. Since the body 6 and the decorative frame 3 are fixed, the assembly work time of the lighting device 1 can be shortened.

  Next, FIG. 3 shows a state in which the downlight main body 1 as the lighting device and the power supply unit 5 as the power supply device are installed and connected to the ceiling surface. In the present embodiment, the lighting device is configured by connecting the downlight main body 1 and the power supply unit 5.

  The power supply unit 5 supplies power to the light source of the downlight body 1 and controls the lighting of the light source by its lighting circuit, and has a function of a DC power supply that receives a commercial power supply and outputs a predetermined DC voltage. . The power supply unit 5 has a substantially ship shape, and is connected to a case main body 12 to which a power supply circuit 11 is attached, a cover member 13 covering the case main body, and a power supply line PW (including a ground line) of commercial power. A lead wire 16 having a power supply connector 15 connected to the power terminal block 14 and the power receiving connector 9 of the downlight main body 1 is provided.

In installing such a lighting device, first, the power line PW wired on the back of the ceiling C is pulled out from the embedding hole H formed in the ceiling C, and connected to the power terminal block 14 of the power unit 5. Then, the power feeding connector 15 is connected to the power receiving connector 9 of the downlight main body 1. Next, the power supply unit 5 is inserted from the embedding hole H and placed behind the ceiling C. Next, the pair of leaf springs 8 for attachment of the downlight body 1 are operated with both hands so as to squeeze against the elastic force, and the downlight body 1 is inserted through the embedding hole H while supporting the downlight body 1. As the downlight body 1 is inserted into the embedding hole H, the hand is released and the downlight body 1 is pushed up. As a result, the mounting leaf spring 8 returns to the outer side and comes into contact with the back surface of the ceiling C, the downlight body 1 is pulled upward by this elastic force, and the flange 3a of the decorative frame 3 is moved to the periphery of the embedding hole H. The downlight body 1 is installed on the ceiling C surface.

  FIG. 4 is a partially enlarged cross-sectional view showing an illumination apparatus according to the second embodiment of the present invention. In FIG. 4, the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals, and description of portions related to the same components as those in the first embodiment is omitted.

  In the present embodiment, the locking portion 20 is provided on the reflector 6. From the upper end edge of the decorative frame 3, a collar portion 3 b that protrudes toward the reflector 6 is provided. The front end of a support portion 22 that integrally protrudes upward from the lower end edge of the outer periphery of the reflector 6 is in contact with and supported by the flange portion 3b.

  The locking piece 21 is provided so as to be elastically swingable from an inner portion of the support portion 22 provided on the reflector 6, and a locking claw at the tip is inserted into the insertion hole 2 c to be elastically cylindrical. The second substrate portion 2a is locked. In a state where the locking piece 21 is locked, it is supported in a state where the collar portion 3 b of the decorative frame 3 is engaged with the support portion 22 provided on the reflector 6. By supporting the reflector 6, the substrate 4 is also brought into contact with the inner surface of the substrate portion 2a, so that the heat of the LED 10 is efficiently conducted to the radiation fins 2b.

  As described above, according to the present embodiment, the locking claw of the locking piece 21 is elastically locked to the cylindrical main body 2, so that the light emitting body (substrate 4, LED 10) and reflection are reflected on the cylindrical main body 2. Since the body 6 and the decorative frame 3 are fixed, the assembly work time of the lighting device 1 can be shortened.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the light source unit is preferably used for downlights, but can be applied to spotlights and various illumination devices used indoors or outdoors.

  DESCRIPTION OF SYMBOLS 1 ... Downlight main body, 2 ... Cylindrical main body as apparatus main body, 2c ... Insertion hole, 3 ... Cosmetic frame as frame, 3b ... Gutter part, 4 ... Board DESCRIPTION OF SYMBOLS 5 ... Power supply unit as a power supply device, 6 ... Reflector, 10 ... Light emitting element (LED), 20 ... Locking part, 21 ... Diameter stop piece, 22 ... Support Part

Claims (3)

A light emitter having a substrate and a light emitting element mounted on one side of the substrate;
An apparatus main body provided with an insertion hole that is disposed so that the other surface side of the substrate of the light emitter is in close contact and opens toward the one surface side of the substrate;
A reflector provided on one side of the substrate and reflecting the emitted light of the light emitting element;
A frame provided on one surface side of the substrate, the main part being positioned below the reflector;
A support provided on one of the reflector and the frame and supporting the other on the apparatus main body side and a locking claw at the tip are inserted into the insertion hole and elastically locked to the apparatus main body. A locking portion having a stop piece, one of which is attached to the apparatus main body;
A power supply device for supplying power to the light emitting element;
An illumination device comprising: Engaging portion is provided on the reflector, though the flange portion is provided protruding reflector side to the upper end of the frame, the flange portion frame is supported by being supported by the supporting portion of the reflector The lighting device according to claim 1, wherein:   The lighting device according to claim 1, wherein the locking portion is provided on the frame body, and the reflector is supported by the lower end side of the reflector being supported by the support portion of the frame body.

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