JP3150619U - LED reflector - Google Patents

Abstract

Provided is an LED reflector capable of efficiently dissipating heat from an LED in an LED illuminator and using the LED illuminator stably for a long time. A flat part 2 made of aluminum and provided with a plurality of reflecting concave surfaces 8 provided with LED arrangement openings 10 at the bottom, and a circuit board in which the LED 14 is mounted continuously and integrally on the flat part 2 are arranged in contact with each other. And the contact portion 6 to be configured to constitute a reflector for LED. [Selection] Figure 1

Description

  The present invention relates to a reflector for LED used in an LED lighting device.

  Recently, lighting fixtures using LEDs have been widely used. This illuminating device is configured such that a circuit board on which a plurality of LEDs are assembled and mounted is housed in a casing, and reflectors are arranged so as to correspond to the respective LEDs in order to increase the light collecting property.

  Usually, in order to increase the light emission amount of the LED, a large amount of current is passed through the LED, and at that time, the LED generates heat. In particular, when a plurality of LEDs are collectively arranged as in the above-described lighting fixture, heat from each LED is not sufficiently released, resulting in high heat, which causes a short life of the LED.

  This invention has been made in view of the above-described problems, and is intended to efficiently perform heat radiation from the LED in the LED lighting device, so that the LED lighting device can be used stably for a long time.

  In this device, a flat portion having a plurality of reflective concave surfaces made of aluminum and provided with an LED arrangement opening at the bottom is disposed in contact with a circuit board on which the LEDs are mounted continuously and integrally with the flat portion. The reflector for LED provided with a contact part is provided.

  According to the LED reflector having the configuration of the present invention, the heat generated by the LED lighting is transmitted to the LED reflector via the circuit board and the contact portion in contact with the circuit board, and is radiated on the entire surface of the LED reflector. . Thereby, it is avoided that heat accumulates in the LED and the LED is prevented from becoming excessively hot. Since the reflector for LED is made of aluminum and has excellent heat transfer properties, heat transfer from the circuit board is efficiently performed, thereby further enhancing the heat dissipation effect. In addition, since the LED reflector has a plurality of reflective concave surfaces, and one LED reflection is used for the plurality of LEDs, the number of components can be reduced, and the assembly can be facilitated.

  The reflector for LED is provided as an appropriate form corresponding to the form of the illuminator in which it is used. The contact portion is preferably provided to contact the circuit board at a longer distance and in a larger area in order to transmit the heat of the LED to the reflector for LED, but the form is continuous, discontinuous, etc. What is necessary is just to be made into a form suitably. Since the contact portion is also used as an attachment portion to the LED lighting fixture exterior body, the configuration of the lighting fixture is simplified, and the assemblability is improved.

  By using the LED reflector of the present invention, heat radiation from the LED in the LED lighting device can be efficiently performed, thereby providing an LED lighting device that exhibits a bright and stable illumination function for a long period of time. It becomes like this. Moreover, since it is not necessary to attach a reflector separately with respect to each LED by using the reflector for LED which has a some reflective concave surface, the structure of a lighting fixture becomes simple and an assembly property improves.

  FIG. 1 is an external perspective view of an LED reflector according to the present invention. The LED reflector 1 is entirely made of aluminum, and includes a flat surface portion 2 extending narrowly, a pair of vertical portions 4 extending downward from both side edges in the longitudinal direction of the flat surface portion 2, and lower edges of the vertical portions 4 respectively. It consists of a pair of contact edge part (contact part) 6 extended to an outward horizontal. The flat surface portion 4 is provided with six concave concave surfaces 8 whose inner surfaces are mirror surfaces along the longitudinal direction thereof. Each of the reflecting concave surfaces 8 is formed by pressing, and has a circular planar arrangement and a circular LED arrangement opening 10 at the bottom.

  FIG. 2 is an external perspective view of an LED lighting device 20 that uses the LED reflector 1, and FIG. The LED reflector 1 is housed in an aluminum casing 21 (LED lighting fixture exterior body) in a state of being placed on a circuit board 12 having the same width. Six LEDs 14 are mounted on the circuit board 12 along the longitudinal direction, and the LEDs 14 are aligned so that they are located in the respective arrangement openings 10 at the bottom of the reflective concave surface 8 of the reflector 1 for LED. The both side edge portions 13 of the circuit board 12 and the contact edge portions 6 of the LED reflector 1 are superposed with each other via an adhesive resin sealant 30 that is excellent in heat transfer and heat resistant. And it is fitted and attached in the mounting groove 23 of the casing 21 through the adhesive resin sealing material 30. As described above, the contact edge portion 6 is also used as an attachment portion to the casing 21. A translucent cover 24 is attached to the upper surface opening of the casing 21, a heat radiation hole 26 is provided on the side surface, and the bottom surface is open.

  When each of the LEDs 14 is turned on, the LED light 20 is condensed and reflected by the reflecting concave surface 8 and sent out to the transparent cover 24 side, thereby exhibiting an illumination function. At that time, each LED 14 emits heat, but the side edge portion 13 of the circuit board 12 is in contact with both the contact edge portions 6 of the LED reflector 1 in an overlapped state and in contact with the casing 21. Heat is transmitted to the LED reflector 1 and the casing 21 at the contact portion, and is radiated in each. At that time, since the LED reflector 1 and the casing 21 are both made of aluminum, heat transfer to each of them is excellent, and the respective contacts are brought into close contact with each other via the adhesive resin sealing material 30. This also provides good heat transfer. As described above, the heat generated in each LED 14 is efficiently radiated by the LED reflector 1 and the casing 21, so that an excessive temperature rise of the LED 14 is avoided.

  FIG. 4 is an external perspective view showing another embodiment of the reflector 1 for LED. The LED reflector 1 of this embodiment has a circular planar shape and is provided with three reflecting concave surfaces 8 in the plane portion 2, and the contact edge portion 6 leaves a heat radiating opening 28 along the curved vertical portion 4. Is provided. The LED reflector 1 is used by being incorporated in an LED lighting device having a circular illumination surface.

  External perspective view of an embodiment of an LED reflector of the present invention   External perspective view of a lighting fixture that uses the LED reflector of the present invention   Cross-sectional configuration diagram of what is shown in FIG.   External appearance perspective view of other embodiment of LED reflector of this invention

DESCRIPTION OF SYMBOLS 1 LED reflector 2 Plane part 6 Contact edge part (contact part)
8 Reflective concave surface 10 Arrangement opening 12 Circuit board 14 LED
21 Casing (LED lighting fixture exterior)

Claims (2)

Made of aluminum,
A flat portion provided with a plurality of reflective concave surfaces provided with LED arrangement openings at the bottom;
A contact portion that is continuously integrated with the plane portion and arranged in contact with a circuit board on which the LED is mounted;
A reflector for LED, comprising:   The LED reflector according to claim 1, wherein the contact portion is also used as an attachment portion to the LED lighting fixture exterior body.

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