JP2015056242A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which, when embedding and installing a luminaire in a ceiling, an end part of a power source unit case 3a of the luminaire is damaged by being rubbed with a rear surface of the ceiling, or a power source line is damaged by the power source unit case 3a being hooked with the power source line or riding over the power source line, and safety is impaired.SOLUTION: A luminaire includes: a luminaire body 1 including a light source substrate 5; a power source unit 3 for covering a power source circuit for supplying power to the luminaire body 1 with a box body and holding it; and a fixation part 2 for connecting the luminaire body 1 and the power source unit 3 so that the luminaire body 1 and the power source unit 3 rotate in one direction. The power source unit 3 includes at least one support leg 3c, and a tip of the support leg 3c is made to be a contact part on which surface treatment for imparting smoothness is performed.

Description

  In a lighting device called a downlight that is embedded in a cylindrical hole provided on the ceiling surface and emits light toward the space under the ceiling, the lighting device body including a light source is connected to the lighting device body and the power source. It is composed of a power supply unit in which a board and other control circuit boards are housed in a box, and these are inserted through holes provided in the ceiling plate.

  In addition, since there is a restriction on the height space of the ceiling, connect the power supply unit so that it can rotate in the vertical direction with respect to the main body of the lighting device. Accordingly, there is a lighting device in which the power supply unit is installed at a certain angle with the lighting device main body (see FIG. 1 of Patent Document 1 and FIG. 1 of Patent Document 2).

Japanese Patent Laid-Open No. 5-28818 JP 2011-70859 A

However, the ceiling of the room where the above-mentioned lighting device is installed uses grooved steel etc. to suspend and fix the ceiling board, and many power lines are usually laid on the back of the ceiling. Therefore, the back of the ceiling is rarely flat. Therefore, when the lighting device is embedded and installed in the ceiling, the end of the power unit case of the lighting device is rubbed and scratched with the back of the ceiling, or the power unit case is There is a problem that the power line is damaged by being hooked on the line or riding on the power line to impair safety.
Regarding the above-described problem, for example, in the lighting device described in Patent Document 2, the power supply unit includes a support leg formed of a flat plate, and the electric unit does not directly contact the back of the ceiling or an obstacle. Since the front end portion is obtained by bending a plate material at a right angle, when the front end of the support leg comes into contact with the back surface of the ceiling, it remains as a surface contact and easily receives friction. In addition, when the power line becomes an obstacle, the tip of the support leg is easily caught, and it is difficult to get on or over the power line, which is not sufficient as a measure for preventing damage to the power line.

The lighting device according to claim 1 of the present invention solves the above-described problem,
A lighting device body including a light source substrate;
A power supply unit that covers and holds a power supply circuit that supplies power to the lighting device body with a box; and
The lighting device main body and the power supply unit include a fixing portion that connects the lighting device main body and the power supply unit so as to rotate in one direction.
The power supply unit includes at least one support leg,
The tip end of the support leg is a contact portion that has been subjected to a surface treatment that provides smoothness.

  In the lighting device of the present invention, the tip of the support leg provided in the power supply unit is subjected to a surface treatment that imparts smoothness, so that there are obstacles such as irregularities and power lines on the back of the ceiling, and a flat surface is maintained. Even if it does not strike, the contact part at the tip of the support leg of the power supply unit can easily climb over obstacles and get over it, so the workability when installing the lighting device is improved, and the power supply unit and power supply The effect of preventing damage to the wire and improving safety can be expected.

It is a perspective view of the illuminating device which shows embodiment of this invention. It is a disassembled perspective view of the illuminating device which shows embodiment of this invention. It is a side view at the time of attachment (with an obstruction) of the illuminating device which shows embodiment of this invention. It is a side view at the time of attachment of the illuminating device which shows embodiment of this invention.

  Embodiments of the present invention will be described below with reference to FIGS. A lighting device body 1 (hereinafter referred to as a main body) shown in a substantially cylindrical shape in FIGS. 1 and 2 has a disk-shaped insulating sheet 4 and a plurality of LEDs 5a as light emitting elements mounted on a surface to which light is irradiated. A light source substrate 5 is attached, and a diffusion cover 6 and a reflector 7 for controlling light distribution are attached to the outside of the light source substrate 5.

  The diffusion cover 6 diffuses light from the LEDs 5a of the light source substrate 5, relaxes the concentration of luminance, and reduces the graininess of the LEDs 5a that are light sources.

  Further, in order to embed the lighting device in a cylindrical hole provided in the ceiling, a mounting spring 8 is provided near the side surface of the main body 1 so that a plurality of leaf springs hold the side surface of the main body 1 and the inner surface of the hole. Yes.

  The heat generated by the light source substrate 5 when the lighting is turned on uses a highly conductive metal, ceramics, or the like so that heat can be radiated to the opposite side of the light irradiation direction, that is, when the lighting device is installed on the ceiling. The heat dissipating part 1a comprising a plurality of plates is provided.

  Further, as shown in FIG. 1 and FIG. 2, the main body 1 is connected to the power supply unit 3 via the fixed portion 2 that is directly connected, and the main body 1 and the power supply unit 3 are opposite to each other on the lower side of the ceiling. It becomes a structure which can be rotated upward.

  The power supply unit 3 houses a power supply board and an inverter circuit board (both not shown) in a case 3a and a case 3a that are thin plates so as to have heat dissipation, and a power supply terminal block serving as a power supply port for these boards 3b, and power from a commercial power source is supplied to the power terminal block 3b.

  In this way, the power supply board and the inverter circuit board receive electric power, convert them to desired output power, and output them to the light source board 5 through wiring, thereby turning on the LEDs 5a of the light source board 5.

  The case 3a is generally hollow by bending a generally thin metal plate material having good thermal conductivity as a cover for preventing the power terminal block 3b and the charging part (not shown) of the power board from contacting each other. Those formed in a rectangular parallelepiped are effective.

  The power supply unit 3 is connected to the main body 1 via the rotating shaft 2a that also serves as a fixed shaft and the fixed portion 2 so that the power supply unit 3 can be turned up and down with the back surface of the ceiling as a downward direction. Similar to 3, by being rotatably connected by the fixing part 2, it can be installed without impairing workability even when the height of the back of the ceiling is restricted when attaching the lighting fixture. It is.

  As shown in FIG. 4, the case 3a of the power supply unit 3 is provided with a support leg 3c at the end of the case 3a away from the rotating shaft 2a of the fixed part 2, so that the power supply unit can be mounted when the appliance is attached to the ceiling. 3 can be kept as horizontal as possible, the heat generated and staying inside the case 3a becomes uniform, and excessive concentration of heat on the power supply board can be reduced.

  The support leg 3c is not limited to the position shown in FIGS. 1 to 4, and is provided at the end in the longitudinal direction of the case 3a at a position sufficiently far from the connection portion between the power supply unit 3 and the fixed portion 2. Then, the same effect can be obtained regardless of the surface of the case 3a.

  When the lighting fixture is installed in the ceiling, the power supply unit 3 moves up and down by the rotating shaft 2a on the fixed portion 2 side while being in contact with and rubbing the ceiling surface. Therefore, resistance due to friction occurs, and the power supply unit moves smoothly. May not be done.

  For this reason, the contact portion 3d at the tip of the support leg 3c is subjected to a bending process so as to minimize the contact area with respect to the ceiling surface, and is subjected to a surface treatment or a process that imparts (adds) smoothness as shown in FIG. As shown in FIG. 3, the support legs 3c provided on the power supply unit 3 can be easily provided by providing smoothness even when there are obstacles 9 such as power lines on the back surface of the ceiling and unevenness such as beams on the ceiling. It can move over.

  Surface treatment of the support legs 3c or the contact portions 3d that gives smoothness includes a coating treatment with a highly slippery resin typified by fluororesin and a metal plating treatment typified by nickel-chromium plating, as shown in FIG. As shown in FIG. 4B, a method may be used in which the covering material 10 subjected to the surface processing is separately manufactured and the contact portion 3d at the tip of the support leg 3c is covered.

  As described above, the lighting device according to the present invention is provided with a surface treatment that gives smoothness to the surface of the contact portion 3d where the support leg 3c provided on the power supply unit 3 comes into contact with the back surface of the ceiling or the obstacle 9, so This improves the workability and safety of the lighting device.

  DESCRIPTION OF SYMBOLS 1 Main body, 2 Fixed part, 2a Rotating shaft, 3 Power supply unit, 3a Case, 3b Power supply terminal block, 3c Support leg, 3d Contact part, 4 Insulation sheet, 5 Light source board, 5a LED, 6 Diffusing cover, 7 Reflecting plate, 8 Mounting spring, 9 Obstacle 10 Covering material.

Claims (6)

A lighting device body including a light source substrate;
A power supply unit that covers and holds a power supply circuit that supplies power to the lighting device body with a box; and
The lighting device main body and the power supply unit include a fixing portion that connects the lighting device main body and the power supply unit so as to rotate in the vertical direction.
The power supply unit includes a support leg, and the tip of the support leg is a contact portion that has been subjected to surface processing that imparts smoothness.   The lighting device according to claim 1, wherein the support leg is provided at a position facing a connection side of the power supply unit with the lighting device main body. The lighting device according to claim 1, wherein the contact portion at the tip end of the support leg is formed by bending a flat plate end portion. The lighting device according to claim 3, wherein the contact portion at the tip of the support leg is an acute angle bending process or an R bending process.   5. The lighting device according to claim 1, wherein the surface treatment for providing smoothness of the tip end of the support leg is a resin coating or a plating.   6. The lighting device according to claim 5, wherein the surface treatment for providing smoothness of the tip end of the support leg is mounted with a coating material having a resinous coating or plating.

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