JP2015162315A - Flush lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush lighting fixture that has a simple configuration and can thus eliminate the task of correcting a program.SOLUTION: The flush lighting fixture includes: a substrate provided with light emitting elements (LEDs) on the front surface; a heat sink attached to the rear surface of the substrate to receive heat generated in the light emitting elements (LEDs) and radiate the heat to the air; and a power source unit to supply electric power to the LEDs. The power source unit is disposed on the top surface of the heat sink. The power source unit has a power-source case and a power-source cover composed of a metal, and at least one of a through hole and a notch from which a program writing connector accommodated in the power-source case and the power-source cover and disposed on a power-source substrate is exposed.

Description

  The present invention relates to an embedded luminaire that is used by being embedded in a construction surface such as a ceiling using, for example, an LED as a light source.

  Conventionally, there has been known an embedded illumination device as disclosed in Japanese Patent Application Laid-Open No. 2008-159455 (Patent Document 1).

  In patent document 1, the power supply device which supplies electric power to LED is provided so that it may be located in the outer area | region of an instrument main body outer periphery via an arm part in the outer bottom face of the instrument main body which accommodated LED inside. An embedded illumination device has been proposed.

JP 2008-159455 A

  However, in the lighting device described in Patent Document 1, when the program is corrected, it is necessary to remove the power supply device from the arm portion and expose the power supply board in the power supply device, and it takes time to correct the program. There is a fear.

  An object of the present invention is to provide an embedded lighting apparatus that can save the trouble of correcting a program with a simple configuration.

  The present invention relates to a substrate having a light emitting element (LED) provided on the front surface, a heat sink attached to the back surface of the substrate and transferring heat generated from the light emitting element (LED) to dissipate heat in the air, A power supply device for supplying power, wherein the power supply device is disposed on an upper surface of the heat sink, and the power supply device is disposed on a metal power supply case, a power supply cover, and a power supply board accommodated in the power supply case. At least one of a through hole or a notch is formed so as to expose the programmed write connector.

  According to the present invention, it is possible to provide an embedded lighting apparatus that can save the trouble of correcting a program with a simple configuration.

The perspective view of the lighting fixture in embodiment of this invention is shown. The disassembled perspective view of the lighting fixture in embodiment of this invention is shown. The front view of the lighting fixture in embodiment of this invention is shown. The sectional view of the lighting fixture in the embodiment of the present invention is shown.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1, 2, 3, and 4. Moreover, in each figure, it demonstrates by defining the axis | shaft of front and rear, right and left, and the upper and lower axis orthogonal to them. In addition, common portions are denoted by the same reference numerals, and redundant description is omitted.

  The embedded lighting fixture 100 of this embodiment includes a power supply device 1, a heat sink 2, a frame 3, a main body fixing spring 4, a power terminal block 5, a reflector 7, and an LED substrate 6 including LEDs. ing.

  The heat sink 2 has a structure that can be formed by so-called aluminum extrusion, and the material of the heat sink 2 is an aluminum alloy such as 6063T-5. The material of the heat sink 2 is not limited to this, and other materials may be used as long as the material has high thermal conductivity. Moreover, surface treatment of the heat sink 2 may be performed to increase the emissivity and improve the heat dissipation performance. For example, the emissivity can be set to about 0.8 to 0.9 by a surface treatment method such as alumite treatment or resin coating. Further, the heat sink 2 is provided with a plurality of heat dissipating fins 2a along the vertical and horizontal axes, in order to improve the workability when inserted into the embedded hole provided in the ceiling, It is preferable that the height of the radiating fin in the foremost row (endmost portion) is shorter than the height of the adjacent radiating fin. Further, at least one fixing hole 2b for fixing the power supply device 1 with a screw or the like is provided on the upper surface of at least one radiating fin. That is, the heat radiating fin has a thickness sufficient to fix the screw. Further, the heat dissipating fin is provided with at least one recess 2c for weight reduction. In the present embodiment, two recesses 2c are provided. Furthermore, in order to secure the storage space for the power supply device 1, a plurality of radiation fins including the last row of radiation fins and having one or more adjacent radiation fins shorter than other radiation fins are provided. To form a stepped shape. The heights of the radiating fins in the vicinity of these last rows are substantially the same.

  By providing the heat radiation fins shorter than the other heat radiation fins, there is an effect that the power supply device 1 can be placed at the location.

  In addition, by providing a fin shorter than the other heat radiation fins, a space sufficient for arranging the power supply device 1 can be secured, and the power supply device 1 is embedded as much as the power supply device 1 rides compared to the one described in Patent Document 1. The length of the main body of the lighting fixture can be shortened. Depending on the length of the short fin, a large space can be secured, and the height of the embedded luminaire body can be shortened.

  The power supply device 1 includes a metal power supply case 11, a metal power supply cover 12, a power supply board 13 in which a power supply circuit that is housed in the power supply case and the power supply cover and supplies power to the LEDs is formed, and a power supply board The screw 14 for fixing 13 to the power supply case 11, the spacer 15 for stabilizing the attitude | position of the power supply board 13, and the power supply terminal block 5 latched by the power supply case 11 are provided. Moreover, the power terminal block 5 and the power supply board 13 are electrically connected by an electric wire or the like. The power supply case 11 is formed with a hole 11 a for attaching the spacer 15 along the upper and lower axes, and a screw fixing hole 11 b for fixing the power supply substrate 13 with the screw 14. Further, a through hole 11c is formed so that the program writing connector 13a disposed on the power supply board 13 is exposed when the power supply board 13 is stored. The through hole 11c may have a notch shape instead of a hole shape. On the other hand, the power supply cover 12 has a notch 12c. The notch 12c may be a through hole instead of the notch shape. A tape (seal) or the like may be attached to the through hole 11c and the notch 12c in order to protect the program writing connector 13a. To provide an embedded luminaire that can save the trouble of correcting a program with a simple configuration by providing the power supply device 1 with a through hole 11c and a notch 12c that expose the program writing connector 13a. Can do. As long as the program writing connector 13a is exposed, it is not limited to the through hole 11c and the notch 12c.

  The power supply cover 12 has at least one power supply cover screw fixing hole 12a for fixing to the heat sink 2 with screws 16 and the like, and further, a flange portion 12b is formed in a direction along the heat sink 2. As shown in FIG. 3, when the power supply device 1 is attached to the heat sink 2, for example, when the vicinity of the power supply terminal block 5 of the power supply device 1 is grasped and lifted, a rotational force is generated with the screw fixing portion as a fulcrum, and the power supply cover 12. The vicinity of the screw fixing portion may be deformed. However, by adopting a structure in which the flange portion 12b enters the inside of the radiating fin, the flange portion 12b comes into contact with the radiating fin with respect to the rotational force, and an effect of suppressing deformation of the screw fixing portion 16a is achieved.

  The LED substrate 6 on which a plurality of light emitting elements (LEDs) are arranged is simply bonded to the lower surface of the heat sink 2 by applying, for example, silicon grease. Further, the reflector 7 is covered with the LED substrate 6 and is fixed to the through holes 7 a provided in the reflector 7 and the mounting holes provided in the heat sink 2 with screws 17. The material of the LED substrate 6 is preferably an aluminum alloy in order to efficiently transmit heat generated from the light emitting element (LED) to the heat sink 2. Further, by applying silicon grease or the like, the adhesion between the LED substrate 6 and the heat sink 2 is increased, and the heat dissipation performance can be improved. Moreover, it is preferable to use the material which does not contain sulfur components, such as silicone resin, for example as the material of the reflector 7.

  The frame 3 is formed with a circular groove 3a for disposing the circular plate-like diffusion sheet 8, and a plurality of bosses 3b provided with mounting holes for screwing. A plurality of through holes 7 b are formed in the reflector 7, and the boss portion 3 b and the through holes 7 b are fixed by sandwiching the diffusion sheet 8 with screws 18.

  In addition, when used outdoors such as under a building eaves, higher waterproof performance is required. Therefore, as shown in FIG. 4, in order to prevent water from entering from the gap between the frame 3 and the diffusion sheet 8, there is a circular groove 3 b that allows the O-ring 9 to be sandwiched between the frame 3 and the diffusion sheet 8. It is formed on the frame 3. For the same purpose, a waterproof packing 10 is provided to prevent water from entering from the gap between the frame 3 and the ceiling material. Resin is used for the frame 3. ABS is used as the resin material. When a metal material such as an aluminum die cast is used for the frame, the heat conductivity is higher than that of the resin, so that heat dissipation can be improved. The frame surface should be painted to increase the emissivity. If design is considered, the inside may be a mirror reflecting surface. In this embodiment, the diffusion sheet 8 is made of a transparent resin and further has a textured surface. However, in some cases, a so-called milky white resin, which is a material having a stronger diffusion component, may be used. Both the O ring 9 and the waterproof packing 10 are made of silicone rubber that does not contain sulfur components.

DESCRIPTION OF SYMBOLS 1 Power supply device 2 Heat sink 3 Frame 4 Main body fixing spring 5 Power supply terminal block 6 LED board 7 Reflector 8 Diffusion sheet 9 O ring 10 Waterproof packing 11 Power supply case 11a Hole 11b Screw fixing hole 11c Through hole 12 Power supply cover 12a Power supply cover screw fixing hole 12b Flange part 12c Notch part 13 Power supply board 14 Screw (for power supply board stop)
15 Spacer 16 Screw (for stopping power supply)
17 Screw (for reflector stop)
18 screws (for frame fixing)

Claims (2)

A substrate provided with a light emitting element (LED) on the front surface, a heat sink attached to the back surface of the substrate and transferring heat generated from the light emitting element (LED) to dissipate it into the air, and supplying power to the LED A power supply, and the power supply is disposed on an upper surface of the heat sink,
The power supply device includes a metal power supply case, a power supply cover, and at least one of a through hole or a notch that exposes a program writing connector disposed on a power supply board housed in the metal power supply case and power supply cover. Recessed luminaire characterized by 2. The embedded lighting apparatus according to claim 1, wherein a tape (seal) is attached to the through hole and the notch of the power supply device in order to protect the program writing connector.