CN202769327U - A kind of LED light - Google Patents

Abstract

The utility model discloses a LED lamp relates to LED illumination field. The utility model comprises a lamp cup, a lamp shade and an LED light-emitting circuit board, wherein the lamp shade is fixedly arranged below the lamp cup, a hollow heat dissipation structure is arranged in the lamp shade, the hollow heat dissipation structure comprises a heat dissipation cavity, and the heat dissipation cavity is of a hollow structure from the lower end to the upper end; a heat dissipation channel extending outwards is arranged between the lampshade and the lamp cup and is communicated with the heat dissipation chamber; the LED light-emitting circuit board is arranged on the outer wall surface of the cavity wall of the heat dissipation cavity, and the LED light-emitting body is assembled on the LED light-emitting circuit board. The utility model discloses the convection heat dissipation effect is very good, can be applicable to the heat dissipation of high power LED lamp, can separate heat abstractor and LED lamp power module to arrange cavity convection heat abstractor in the lamp shade in, heat radiation structure safety is with low costs, easy volume production.

Description

A kind of LED light

technical field

The utility model relates to the field of LED lighting, in particular to an LED lamp.

Background technique

LED lamp is a new type of lighting fixture popular in recent years. With the rapid development of LED (light-emitting diode) technology, the proportion of LED light sources in the lighting market is increasing. After years of development and accumulation, LED lighting technology has shown Excellent energy-saving effect. As a new semiconductor light-emitting element, LED light source has the advantages of small size, low energy consumption, low calorific value, and long life. Although LED is a cold light source, it still generates heat when working, and the brightness of LED lights will be severely attenuated at high temperatures. If the heat is not dissipated in time, the temperature will rise rapidly in a short period of time, resulting in rapid decay of brightness and seriously affecting the life of the light source.

In the LED lamps in the prior art, in order to dissipate the heat quickly, a metal heat sink carrying the LED light-emitting circuit board is usually installed in the lamp cup, and then the metal heat sink is used to guide the heat out through the metal shell of the lamp cup. There are many disadvantages in this heat dissipation structure: First, the power of the LED luminous body is greatly limited. When a large power LED luminous body is used, the temperature increases rapidly, and the heat cannot pass through the metal heat sink in the lamp cup quickly. The metal shell is exported, so the heat dissipation effect is poor; second, because the LED lamp power control device is generally installed in the lamp cup, therefore, the metal heat dissipation device installed in the lamp cup is not only difficult to dissipate heat for the LED lamp power control device, Moreover, heat will be introduced into the LED lamp power control device, causing problems such as reduced lifespan of the LED lamp and impact on the safety of the power module.

Utility model content

The technical problem to be solved by the utility model is to provide an LED lamp with good heat dissipation effect, suitable for heat dissipation of high-power LED lamps, and capable of separating the heat dissipation device from the power supply module of the LED lamp.

In order to solve the above technical problems, the technical solution of the present utility model is: an LED lamp, including a lamp cup, a lampshade and an LED light-emitting circuit board, the lampshade is fixed under the lamp cup; a hollow heat dissipation structure is provided inside the lampshade, and the hollow heat dissipation The structure includes a heat dissipation chamber, which is a hollow structure from the lower end to the upper end; a heat dissipation channel extending outward is provided between the lampshade and the lamp cup, and the heat dissipation channel communicates with the heat dissipation chamber; the LED light-emitting circuit The board is arranged on the outer wall surface of the cavity wall of the heat dissipation chamber, and the LED light emitting body is assembled on the LED light emitting circuit board.

A ventilation hole is provided at the lower end of the lampshade, and the ventilation hole communicates with the heat dissipation chamber; further, a bottom cover is provided at the lower end of the lampshade, and the bottom cover is in the shape of a flat plate, or a hemispherical shape convex downward, or a concave concave upward concave The bottom cover is pit-shaped, and the bottom cover is formed with vent holes, and the vent holes communicate with the heat dissipation chamber, so that air flows into the heat dissipation chamber through the vent holes.

The heat dissipation channel also communicates with the lampshade space where the LED illuminant is located.

The inner wall of the heat dissipation chamber is provided with several heat dissipation fins.

An LED power supply circuit board is installed inside the lamp cup, a threaded lamp cap is fixedly connected to the upper end of the lamp cup, and a number of screw holes are provided on the shell of the lamp cup so as to assemble or disassemble the lamp cup by screws.

The LED lamp is also provided with a PIR induction device; the PIR induction device is installed at the lower end of the lampshade.

The LED lamp is also provided with a plurality of full-color LED luminous bodies and a switch controller, the switch controller is arranged in the lamp cup, and is electrically connected with a plurality of full-color LED luminous bodies, so as to control the lighting of a plurality of full-color LED luminous bodies. or not.

The lamp cup is made of insulating plastic, and the LED light-emitting circuit board is a foldable PCB.

The beneficial effects of the utility model are as follows: firstly, it solves the heat dissipation problem of the whole system of the LED luminous body and the LED power supply circuit board, the air convection heat dissipation can greatly improve the heat dissipation effect, and can be adapted to the heat dissipation of the high-power LED luminous body. Second, the heat dissipation structure is simple, the cost is low, and mass production is easy. Third, the heat dissipation chamber and lampshade can be shaped arbitrarily, which is rich in aesthetics. The lampshade outside can achieve the purpose of high temperature insulation, waterproof, dustproof and insulation. Fourth, the heat dissipation structure is separated from the LED power supply control module to avoid damage to the LED power supply module when the temperature of the heat dissipation structure is too high, and greatly improve the life and safety of the LED lamp.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the first embodiment of the utility model.

Fig. 2 is a schematic diagram of the second structure of the embodiment of the utility model.

Fig. 3 is a schematic diagram of the third structure of the embodiment of the utility model.

Fig. 4 is a schematic diagram of the structure of the fourth embodiment of the utility model.

Fig. 5 is a schematic diagram of the fifth structure of the embodiment of the utility model.

Fig. 6 is a schematic diagram of the sixth structure of the embodiment of the utility model.

In the figure: 1. lamp cup; 2. lampshade; 3. LED light-emitting circuit board; 31. foldable PCB; 4. hollow heat dissipation structure; 41. heat dissipation chamber; 5. heat dissipation channel; 6. LED luminous body; 7 .Air vent; 8. Bottom cover; 9. Cooling fins; 10. LED power circuit board; 11. Threaded lamp holder; 12. Screw hole; 13. PIR induction device;

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail. the

Embodiment 1, as shown in Figure 1, an LED lamp includes a lamp cup 1, a lampshade 2 and an LED light-emitting circuit board 3, the lampshade 2 is fixed under the lamp cup 1; a hollow heat dissipation structure 4 is provided inside the lampshade 2 , the hollow heat dissipation structure 4 includes a heat dissipation chamber 41, the heat dissipation chamber 41 is a hollow structure from the lower end to the upper end; a heat dissipation channel 5 extending outward is provided between the lampshade 2 and the lamp cup 1, and the heat dissipation channel 5 It communicates with the heat dissipation chamber 41 so that the air can be exported from the heat dissipation chamber 41 through the heat dissipation channel 5; the LED light emitting circuit board 3 is arranged on the outer wall surface of the cavity wall of the heat dissipation chamber 41, Equipped with LED luminous body 6. An LED power supply circuit board 10 is installed inside the lamp cup 1, and a threaded lamp cap 11 is fixedly connected to the upper end of the lamp cup 1, so that the heat dissipation structures 4, 5 are separated from the LED power supply control module 10; Screw holes 12 (refer to FIGS. 1 to 6 ) are used to assemble or disassemble the lamp cup 1 by screws for recycling or modification. Further, the heat dissipation channel 5 is also connected with the lampshade space where the LED illuminant 6 is located, so that air can enter the lampshade space where the LED illuminant 6 is located from the outside through the heat dissipation channel 5 .

Embodiment 2, as shown in FIG. 2 and FIG. 3 , the overall technical solution is similar to that of Embodiment 1. The difference is that, in Embodiment 2, a ventilation hole 7 is provided at the lower end of the lampshade 2 , and the ventilation hole 7 is connected with the cooling chamber 41. In this way, air can enter the heat dissipation chamber 41 from the vent hole 7 . As a further preference for the vent hole 7, as shown in Figure 2, the lower end of the lampshade 2 is provided with a bottom cover 8, which can be in the shape of a flat plate, or a downwardly convex hemispherical shape, or an upwardly concave pit Shaped, the bottom cover 8 is made with vent holes 7, and the vent holes 7 communicate with the heat dissipation chamber 41, so that air flows into the heat dissipation chamber 41 through the vent holes. In addition, it can be seen from FIG. 2 that the inner wall of the heat dissipation chamber 41 is provided with several heat dissipation fins 9 to facilitate heat dissipation. It should be noted that the heat dissipation fins 9 are not limited to the arrangement in the second embodiment, The cooling fins 9 can also be arranged in the first example and other examples described later.

Embodiment 3, as shown in Fig. 4, Fig. 5 and Fig. 6, the LED lamp can also be provided with a PIR induction device 13, so that the remote control can be realized for the lighting and extinguishing of the LED lamp, and the lighting and extinguishing of the LED lamp can also be controlled. The automatic sensing of the human body is realized, and it is beneficial to both energy saving and safety; furthermore, the PIR sensing device 13 is installed at the lower end of the lampshade 2 .

Embodiment 4, as shown in Figure 5, the LED lamp can also be provided with a number of full-color LED luminous bodies 14 and switch controllers, the switch controller is arranged in the lamp cup 1, and is electrically connected to a number of full-color LED luminous bodies 14. In order to control the lighting of several full-color LED illuminants 14, the switch control device can be integrated with the LED power supply circuit board 10. By arranging the full-color LED illuminant 14, the LED lamp can produce dazzling effects.

In the above embodiments, the lamp cup 1 can be made of insulating plastic injection molding. The DC output terminal of the power supply control will be raised above DC100V to increase the efficiency of power usage. The LED light-emitting circuit board 3 is a flexible and foldable PCB 31 for recycling or modification. The heat dissipation chamber 41 is made of copper, aluminum, alloy and other metal materials. The shape of lampshade 2 is varied, can be petal tube shape, cylinder shape, bulb shape or the like. In addition, the threaded lamp cap 11 of the present invention can be any type of lamp cap, for example: E27, E26, E40 and so on. The heat dissipation structures 4 and 5 of the present utility model can be applied to various LED lamps, for example: LED light bulbs, patio lights, street lights, T5, T8, T10 light tubes and the like.

The above is only a preferred embodiment of the utility model, and any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical solution of the utility model all belong to the scope of the technical solution of the utility model.

Claims (10)

1. An LED lamp, comprising a lamp cup, a lampshade and an LED light-emitting circuit board, the lampshade is fixed under the lamp cup; it is characterized in that: the lampshade is provided with a hollow heat dissipation structure, and the hollow heat dissipation structure includes a heat dissipation chamber. The heat dissipation chamber is a hollow structure from the lower end to the upper end; a heat dissipation channel extending outward is provided between the lampshade and the lamp cup, and the heat dissipation channel communicates with the heat dissipation chamber; the LED light-emitting circuit board is arranged in the heat dissipation chamber On the outer wall surface of the chamber wall, LED illuminants are assembled on the LED luminous circuit board. 2 . The LED lamp according to claim 1 , wherein a ventilation hole is provided at the lower end of the lampshade, and the ventilation hole communicates with the heat dissipation chamber. 3 . 3. The LED lamp according to claim 2, characterized in that: the lower end of the lampshade is provided with a bottom cover, the bottom cover is in the shape of a flat plate, or a hemispherical shape convex downward, or a pit shape concave upward, the The bottom cover is provided with ventilation holes, and the ventilation holes communicate with the heat dissipation chamber, so that air flows into the heat dissipation chamber through the ventilation holes. 4. The LED lamp according to claim 1, characterized in that: the heat dissipation channel also communicates with the lampshade space where the LED illuminant is located. 5. The LED lamp according to claim 1, characterized in that: the inner wall of the heat dissipation chamber is provided with a plurality of heat dissipation fins. 6. The LED lamp according to claim 1, characterized in that: an LED power supply circuit board is installed inside the lamp cup, a threaded lamp cap is fixedly connected to the upper end of the lamp cup, and several screw holes are set on the shell of the lamp cup for passing through Screws to assemble or disassemble the lamp cup. 7. The LED lamp according to claim 1, characterized in that: a PIR induction device is also provided. 8. The LED lamp according to claim 7, wherein the PIR sensing device is installed at the lower end of the lampshade. 9. The LED lamp according to claim 1, characterized in that: a number of full-color LED illuminants and switch controllers are also provided, the switch controller is arranged in the lamp cup, and is electrically connected to a number of full-color LED illuminants. Connect to control whether several full-color LED illuminants are lit or not. 10. The LED lamp according to any one of claims 1-9, wherein the lamp cup is made of insulating plastic, and the LED light-emitting circuit board is a foldable PCB.

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