CN107255264A - Heat dissipation structure of an LED lamp - Google Patents

Abstract

The invention discloses a heat dissipation structure of an LED lamp, which comprises a lampshade of the LED lamp, wherein a heat dissipation aluminum plate is inserted in the lampshade, an upward convex round table is stamped in the middle of the heat dissipation aluminum plate, a plurality of upward convex heat dissipation channels are stamped on the heat dissipation aluminum plate around the round table, the heat dissipation channels are communicated with an inner cavity of the round table, heat dissipation holes communicated with the heat dissipation channels on the heat dissipation aluminum plate are formed in the side wall of the lampshade, the bottom surfaces of the heat dissipation aluminum plates between adjacent heat dissipation channels are abutted against a cushion block, a screw penetrates through the heat dissipation aluminum plate to be screwed on the cushion block, the cushion block is fixed on a baffle, the baffle is fixedly inserted in the lampshade, a guide pipe is inserted on the baffle, the upper end of the guide pipe is fixed on the bottom surface of the round table, a guide wire through hole is. The invention only optimizes and improves the heat dissipation structure of the LED lamp, and improves the heat dissipation efficiency of the LED lamp under the condition of not changing the size of the LED lamp.

Description

Heat dissipation structure of an LED lamp

Technical field:

The present invention relates to the technical field of LED lamps, and more specifically relates to a heat dissipation structure of LED lamps.

Background technique:

Due to the characteristics of flexible shape, high brightness, energy saving, environmental friendliness and wide application range, LED lamps occupy an increasing market share in the lighting market. However, during the use of LED lamps, the heat dissipation problem of LED lamps, that is, LED light decay, has become a key factor restricting the service life of LED lamps and the promotion and application of LEDs. Especially in high-power LED lamps, only 15% to 20% of the input power is converted into light energy output, and the rest is converted into heat energy. If the heat is not discharged to the outside in a timely manner, it will not only reduce the luminous efficiency of the lamp, And it may cause the LED chip to fail rapidly due to excessive temperature.

At present, there are many methods for dissipating heat from LED lamps, mainly using heat conduction or heat convection to improve the heat conduction or heat dissipation performance of the LED substrate or the LED radiator connected to the substrate. For example, there are passages for heat exchange fluid (water, fluoride refrigerant) to circulate inside the LED substrate; or an additional cooling fan is installed on the LED substrate. The overall weight and size of LED lamps are reduced, which in turn increases the production cost of LED lamps, reduces practicability, and increases the risk of installation and use. In addition, from the overall analysis of the heat dissipation problem of LED lamps from the prior art, we found that most of the solutions to the heat dissipation problem of LED lamps are concentrated on the mounting substrate of the LED light source and the external heat sink.

Invention content:

The object of the present invention is to provide a heat dissipation structure for LED lamps, which can improve the heat dissipation efficiency of LED lamps, in view of the deficiencies in the prior art.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A heat dissipation structure of an LED lamp, including a lampshade of an LED lamp, in which a heat dissipation aluminum plate is inserted and connected, the middle part of the heat dissipation aluminum plate is stamped and formed with an upwardly protruding round table, and the heat dissipation aluminum plate around the round table is stamped and formed with several upwardly protruding lines The heat dissipation channel, the heat dissipation channel is connected with the inner cavity of the round platform, the side wall of the lampshade is formed with a heat dissipation hole connected with the heat dissipation channel on the heat dissipation aluminum plate, and the bottom surface of the heat dissipation aluminum plate between adjacent heat dissipation channels is against the cushion block, and the screw penetrates The overheating aluminum plate is screwed on the block, the block is fixed on the baffle, and the baffle is plugged and fixed in the lampshade. A conduit is inserted on the baffle, and the upper end of the conduit is fixed on the bottom surface of the round table. Wire via holes are formed, a PCB board is fixed on the top surface of the round platform, and LED lamp chips are fixed on the PCB board.

Preferably, the heat dissipation channels are evenly distributed on the heat dissipation aluminum plate in a circular shape around the center of the heat dissipation aluminum plate.

Preferably, several arc-shaped cooling fins are formed on the bottom surface of the heat dissipation aluminum plate, and the height of the cooling fins is smaller than the thickness of the spacer.

Preferably, the upper end of the lampshade is formed with a flaring opening.

Preferably, the lampshade is made of aluminum, the conduits in the lampshade are made of insulating tubes, and the conduits are distributed in the center of the lampshade.

Preferably, the upper end surface of the heat dissipation channel on the heat dissipation aluminum plate is higher than the upper end surface of the circular platform.

The beneficial effects of the present invention are: the structure is simple, only the heat dissipation structure of the LED lamp is optimized and improved, the heat dissipation area is increased and the heat conduction speed is increased, thereby improving the heat dissipation efficiency of the LED lamp without changing the size of the LED lamp.

Description of drawings:

Fig. 1 is the three-dimensional structural representation of the present invention;

Fig. 2 is the structural representation of cross section of the present invention;

Fig. 3 is a schematic structural view of the heat dissipation aluminum plate of the present invention.

In the figure: 1. lampshade; 11. heat dissipation hole; 12. flare; 2. heat dissipation aluminum plate; 21. round platform; 22. heat dissipation channel; 23. heat sink; 24. wire via hole; block; 5, screw; 6, conduit; 7, PCB board; 8, LED light chip; a, cooling chamber.

detailed description:

Embodiment: As shown in Figures 1 to 3, a heat dissipation structure of an LED lamp includes a lampshade 1 of the LED lamp, and a heat dissipation aluminum plate 2 is inserted into the lampshade 1, and the middle part of the heat dissipation aluminum plate 2 is stamped and formed with an upwardly protruding round platform 21 The heat dissipation aluminum plate 2 around the round table 21 is stamped with several upwardly protruding heat dissipation channels 22. The heat dissipation channels 22 communicate with the inner cavity of the round table 21. The side wall of the lampshade 1 is formed with heat dissipation channels 22 on the heat dissipation aluminum plate 2. Connected heat dissipation holes 11, the bottom surface of the heat dissipation aluminum plate 2 between adjacent heat dissipation channels 22 is against the cushion block 4, the screw 5 passes through the heat dissipation aluminum plate 2 and is screwed on the cushion block 4, and the cushion block 4 is fixed on the baffle plate 3 , the baffle plate 3 is plugged and fixed in the lampshade 1, a conduit 6 is inserted on the baffle plate 3, the upper end of the conduit 6 is fixed on the bottom surface of the round table 21, and the round table 21 is formed with a wire through hole 24, and the round table 21 A PCB board 7 is fixed on the top surface, and an LED light chip 8 is fixed on the PCB board 7 .

The heat dissipation channels 22 are evenly distributed on the heat dissipation aluminum plate 2 in a circular shape around the center of the heat dissipation aluminum plate 2 .

Several arc-shaped cooling fins 23 are formed on the bottom surface of the heat dissipation aluminum plate 2 , and the height of the cooling fins 23 is smaller than the thickness of the spacer 4 .

A flaring opening 12 is formed on the upper end of the lampshade 1 .

The lampshade 1 is made of aluminum, and the conduits 6 in the lampshade 1 are made of insulating tubes, and the conduits 6 are distributed in the center of the lampshade 1 .

The upper end surface of the heat dissipation channel 22 on the heat dissipation aluminum plate 2 is higher than the upper end surface of the round platform 21 .

Working principle: The present invention is a heat dissipation structure for LED lamps. It arranges the LED lamp chip 8 on the heat dissipation aluminum plate 2 to facilitate heat dissipation. Heat transfer can also facilitate convection heat dissipation with the outside air through the heat dissipation holes 11 at the same time, and accelerate the speed of heat conduction; and the heat dissipation aluminum plate 2 is fixed on the baffle 3 by means of screws 5, which is convenient for the replacement and maintenance of the heat dissipation aluminum plate 2. At the same time, the baffle 3 and A larger heat dissipation chamber a is provided between the heat dissipation aluminum plates 2 to facilitate convection with the outside air.

The examples are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be listed in the claims of the present invention.

Claims (6)

1. A heat dissipation structure of an LED lamp, comprising a lampshade (1) of an LED lamp, characterized in that: a heat dissipation aluminum plate (2) is inserted into the lampshade (1), and the middle part of the heat dissipation aluminum plate (2) is stamped and formed with an upward protrusion The round table (21), the heat dissipation aluminum plate (2) around the round table (21) is punched and formed with several upwardly protruding heat dissipation channels (22), the heat dissipation channels (22) communicate with the inner cavity of the round table (21), and the lampshade The side wall of (1) is formed with a heat dissipation hole (11) connected with the heat dissipation channel (22) on the heat dissipation aluminum plate (2), and the bottom surface of the heat dissipation aluminum plate (2) between adjacent heat dissipation channels (22) is against a pad The block (4), the screw (5) passes through the heat dissipation aluminum plate (2) and is screwed on the spacer (4), the spacer (4) is fixed on the baffle (3), and the baffle (3) is plugged and fixed on the lampshade (1), described baffle plate (3) is plugged with conduit (6), and the upper end of conduit (6) is fixed on the bottom surface of round table (21), and the round table (21) is formed with wire via hole (24 ), the top surface of the round platform (21) is fixed with a PCB board (7), and the LED lamp chip (8) is fixed on the PCB board (7). 2. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: the heat dissipation channels (22) are evenly distributed on the heat dissipation aluminum plate (2) in a circular shape around the center of the heat dissipation aluminum plate (2). 3. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: the bottom surface of the heat dissipation aluminum plate (2) is formed with a plurality of arc-shaped heat dissipation fins (23), and the heat dissipation fins (23) The height is less than the thickness of pad (4). 4. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: a flaring opening (12) is formed on the upper end of the lampshade (1). 5. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: the lampshade (1) is made of aluminum, the conduit (6) inside the lampshade (1) is an insulating tube, and the conduit (6) distributed in the center of the lampshade (1). 6. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: the upper end surface of the heat dissipation channel (22) on the heat dissipation aluminum plate (2) is higher than the upper end surface of the circular platform (21).