CN203413385U - LED (light-emitting diode) down lamp - Google Patents

Abstract

The utility model discloses an LED downlight, including a heat dissipation lamp body, an LED light source board is installed on the bottom surface of the heat dissipation lamp body, the heat generated by the LED light source is dissipated by the heat dissipation lamp body, a plurality of heat dissipation fins are evenly arranged on the side wall of the heat dissipation lamp body, the arrangement of the heat dissipation fins increases the contact area between the heat dissipation lamp body and the air as a whole, increases the heat dissipation area of the heat dissipation lamp body as a whole, dissipates heat quickly, and thus improves the overall heat dissipation efficiency. The heat dissipation fin and the heat dissipation lamp body are integrally die-cast, so that there is no gap between the heat dissipation fin and the heat dissipation lamp body, the thermal resistance between the heat dissipation fin and the heat dissipation lamp body can be reduced, the heat dissipation of the heat dissipation lamp body as a whole is evenly dissipated, the heat dissipation speed is accelerated, and a good heat dissipation effect is achieved.

Description

LED downlight

technical field

The utility model relates to the field of LED lighting, in particular to an LED downlight with fast heat dissipation.

Background technique

At present, LED light sources are gradually replacing incandescent and fluorescent light sources with the characteristics of long life, no pollution, and high luminous efficiency. Lamps that use LEDs as light sources are called LED lamps. The main structures of existing LED downlights include lamp body, LED light source , LED driver, reflective cup and/or lens, the LED light source is installed in the lamp body, and the reflective cup and/or lens cover are arranged on the LED light source. Since the service life and luminous quality of the LED are greatly affected by temperature, the lamp body is generally a heat-dissipating lamp body made of a metal material with high thermal conductivity or a radiator is fixed on the lamp body to dissipate heat. How to increase the heat dissipation area of the heat dissipation lamp body to improve the heat dissipation effect is the main problem to be solved by the utility model.

Utility model content

The main purpose of the utility model is to provide an LED downlight, which aims at increasing the heat dissipation area of the heat dissipation lamp body and improving the heat dissipation effect.

The utility model proposes an LED downlight, which includes a lamp body, an LED light source board is installed on the bottom surface of the lamp body, a reflective cup is covered on the LED light source board, and a transparent lamp is arranged on the upper cover of the reflective cup. Light board, the upper end cover of the lamp body is provided with a face ring, the lamp body is a heat dissipation lamp body made of a heat-conducting metal material, and a number of cooling fins are evenly arranged on the outer wall of the heat dissipation lamp body, and the heat dissipation The fins are arranged in a turbine shape around the central axis of the heat dissipation lamp body, and the heat dissipation fins are integrally formed with the heat dissipation lamp body.

Preferably, the heat dissipation lamp body is made of aluminum alloy.

Preferably, the heat dissipation lamp body is a heat dissipation cup body, and the shape of the reflector cup is adapted to the heat dissipation lamp body.

Preferably, the transparent board is a PC board.

Preferably, a rubber ring is further included, the rubber ring is sleeved around the periphery of the light-transmitting plate, and the face ring is pressed on the rubber ring.

Preferably, at least two positioning blocks and at least two connection holes are provided on the upper end side wall of the heat dissipation lamp body, and there are one-to-one corresponding and suitable positioning blocks on the lower end side wall of the face ring. The open slot with the opening facing downwards and the installation holes corresponding to the connection holes one by one, the positioning block is placed in the opening groove; the connection holes are aligned with the installation holes, and threaded fasteners Lock securely.

The beneficial effects of the LED downlight of the present utility model are:

The heat generated by the LED light source is dissipated by the heat dissipation lamp body, and a number of cooling fins are evenly arranged on the side wall of the heat dissipation lamp body. area, rapid heat dissipation, thereby improving the overall heat dissipation efficiency. The heat sink and the heat sink lamp body are integrally formed by die-casting, so that there is no gap between the heat sink and the heat sink lamp body, which can reduce the thermal resistance between the heat sink and the heat sink lamp body, so that the whole heat sink body can dissipate heat evenly, and speed up the heat dissipation. To achieve a good heat dissipation effect. the

Description of drawings

Fig. 1 is the structural decomposition diagram of LED downlight in the embodiment of LED downlight of the present invention;

2 is a three-dimensional schematic diagram of an LED downlight in an embodiment of the LED downlight of the present invention;

Fig. 3 is the rear view of the LED downlight in the embodiment of the LED downlight of the present invention;

Fig. 4 is a front view of the LED downlight in the embodiment of the LED downlight of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1 to Fig. 4, an embodiment of the LED downlight of the present invention is proposed. The LED downlight includes a lamp body, which is a heat dissipation lamp body 10 made of heat-conducting metal material, which has excellent heat dissipation performance. The heat dissipation lamp body 10 is provided in a cup shape and is a heat dissipation cup body. An LED light source board is installed on the bottom surface of the heat dissipation lamp body 10. The LED light source board is in close contact with the heat dissipation lamp body 10. The heat generated by the LED light source board can be quickly conducted to The heat dissipation lamp body 10 dissipates heat through the heat dissipation lamp body 10 .

The LED light source board is covered with a reflective cup 20 whose shape is adapted to the heat dissipation lamp body 10 . The bottom of the reflective cup 20 is set as a light source port matched with the LED light source board. The reflective cup 20 is covered on the LED light source board. The LED light source board is located in the light source port. A light-transmitting plate 40 is arranged on the upper cover of the reflector cup 20, and the light-transmitting plate 40 is a PC board with high light transmittance.

A face ring 50 is provided on the upper end cover of the heat dissipation lamp body 10, at least two positioning blocks 102 and at least two connection holes are arranged on the upper end outer wall of the heat dissipation lamp body 10, and a face ring 50 is provided on the lower end side wall of the face ring 50. The opening slots 502 corresponding to the positioning blocks 102 one-to-one and adapted to open downwards and the installation holes corresponding to the connecting holes one-to-one. When assembling the heat dissipation lamp body 10 and the face ring 50 , the positioning block 102 is aligned with the opening groove 502 and placed in the opening groove 502 for fixing the relative positions of the heat dissipation lamp body 10 and the face ring 50 . After the heat dissipation lamp body 10 and the face ring 50 are positioned, the connecting holes are aligned with the installation holes, screws are screwed into the corresponding connection holes and the installation holes, and locked and fixed, so that the heat dissipation lamp body 10 and the face ring 50 are connected and fixed.

After the face ring 50 is fixed, the lower end surface of the inner ring of the face ring 50 is pressed on the edge of the light-transmitting plate 40, so that the light-transmitting plate 40 is fixed; , the reflector 20 is also fixed accordingly, and can be installed in place in one step, which is simple and convenient.

There is a suitable rubber ring 30 on the periphery of the light-transmitting plate 40, and the face ring 50 is pressed on the rubber ring 30, which can prevent the light-transmitting plate 40 from being crushed, and can also make the reflector 20, the light-transmitting plate 40 and the surface The gap between the rings 50 is reduced, so that the face ring 50 , the light-transmitting plate 40 , and the reflective cup 20 are pressed and fixed to each other.

Torsion spring buckles 501 are installed on the opposite sides of the outer wall of the face ring for the installation of the LED downlight.

In order to improve the heat dissipation effect, the heat dissipation lamp body 10 in this embodiment is made of aluminum alloy material, and a plurality of heat dissipation fins 101 are evenly arranged on the outer wall of the heat dissipation lamp body 10, and the heat dissipation fins 101 are formed around the central axis of the heat dissipation lamp body 10. Arranged in a turbine shape, the arrangement of the cooling fins 101 increases the contact area between the entire heat dissipation lamp body 10 and the air, increases the overall heat dissipation area of the heat dissipation lamp body 10, and rapidly dissipates heat, thereby improving the overall heat dissipation efficiency. The heat sink 101 and the heat sink lamp body 10 are integrally die-cast, so that there is no gap between the heat sink 101 and the heat sink lamp body 10, the thermal resistance between the heat sink 101 and the heat sink lamp body 10 can be reduced, and the heat sink lamp body 10 as a whole Uniform heat dissipation, speed up heat dissipation, and achieve a good heat dissipation effect.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (6)

1. An LED downlight, comprising a lamp body, an LED light source board is installed on the bottom surface of the lamp body, a reflective cup is covered on the LED light source board, and a light-transmitting plate is arranged on the upper cover of the reflective cup , the upper end cover of the lamp body is provided with a face ring, and the lamp body is a heat dissipation lamp body made of a heat-conducting metal material. The radiating fins are arranged in a turbine shape around the central axis of the radiating lamp body, and the radiating fins are integrally formed with the radiating lamp body. 2. The LED downlight according to claim 1, wherein the heat dissipation lamp body is made of aluminum alloy. 3. The LED downlight according to claim 2, wherein the heat dissipation lamp body is a heat dissipation cup body, and the shape of the reflector cup is adapted to the heat dissipation lamp body. 4. The LED downlight according to claim 1, wherein the light-transmitting board is a PC board. 5. The LED downlight according to claim 1 or 4, further comprising an apron, the apron is sleeved around the periphery of the light-transmitting plate, and the face ring is pressed on the apron . 6. The LED downlight according to claim 5, characterized in that at least two positioning blocks and at least two connection holes are arranged on the upper end side wall of the heat dissipation lamp body, and at the lower end side of the face ring The wall is provided with an opening slot corresponding to the positioning block one-to-one and adapted to open downwards and a mounting hole corresponding to the connecting hole one-to-one, and the positioning block is placed in the opening slot; the connection The holes are aligned with the mounting holes and locked and fixed by threaded fasteners.

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