WO2015192425A1 - Circuit board capable of dissipating heat from two sides, for light-emitting diode (led) display screen - Google Patents

Abstract

Provided is a circuit board capable of dissipating heat from two sides, for a light-emitting diode (LED) display screen. The circuit board comprises an LED lamp (2) and a circuit board (1). An insulation layer (3) is coated on a surface of the circuit board (1). A very thin layer of heat conducting material (4) is coated outside the insulation layer (3). A heat dissipation layer (5) is disposed outside the heat conducting material (4). A plurality of heat dissipation holes (6) is formed in each of a lighted side and a back side of the heat dissipation layer (5). The LED lamp (2) is attached on the circuit board (1). The heat conducting material (4) is heat conducting silicone grease. By improving the heat dissipation effect of the circuit board (1), the service life of the LED display screen is increased.

Description

 Double-sided heat-dissipating light-emitting diode (LED) display circuit board

 The utility model relates to a circuit board in an LED display, in particular to a circuit board of an LED display screen capable of dissipating heat on both sides

Body

 With the continuous development of science and technology, the application of LED display screens has become more and more extensive. It is well known that the energy produced by an LED source, in addition to being visible light, is converted to heat. Since electronic products are gradually moving toward high density and high integration, LED products are no exception. LED power is increased, and heat dissipation has become an arduous task. The light decay of LED or its lifetime is directly related to its junction temperature. The heat dissipation is not good, the junction temperature is high, and the lifetime is short. The heat dissipation of this LED display puts higher demands on it. Most of the heat dissipating devices in the prior art are provided with a heat dissipating device behind the LED screen, so that part of the heat dissipating device can be performed, but there is no way to achieve a better heat dissipating effect on the heat generated by the LED lamp and the light emitting surface of the circuit board. There is a lack of a heat sink for an LED display that can dissipate heat in all directions.

Utility model content

 In view of the deficiencies in the prior art, the present invention provides a circuit board for a double-sided heat-dissipating LED display screen, which can solve the problem that the light-emitting surface of the circuit board in the LED display screen cannot be cooled well.

In order to solve the above technical problem, the technical solution of the present invention is as follows: The circuit board of the double-sided heat-dissipating LED display panel comprises an LED lamp and a circuit board, characterized in that the surface of the circuit board is coated with an insulating layer and outside the insulating layer. It is coated with a very thin layer of heat-conducting material, and the heat-conducting material has a heat-dissipating layer. The light-emitting surface of the heat-dissipating layer and the back surface are provided with a plurality of scattered materials. The hot hole, the LED light is mounted on the circuit board.

 The heat conductive material is a thermal grease.

 The utility model has the beneficial effects that: the LED display screen of the utility model passes the light surface of the circuit board and the heat dissipation hole of the back surface, so that a large amount of heat generated by the circuit board is well distributed, thereby increasing the heat dissipation effect, thereby increasing the service life of the LED display screen. And the structure of the utility model is reasonable.

DRAWINGS

 The present invention will be further described with reference to the accompanying drawings and embodiments.

 Figure 1 is a schematic view of the structure of the present invention.

detailed description

 The circuit board of the double-sided heat-dissipating LED display provided by the utility model increases the heat dissipation of the LED circuit board through the heat dissipation design of the front and back sides. The specific structure is as shown in FIG. 1: The LED board 2 is mounted on the circuit board 1. On the surface of the circuit board 1, the area without the LED lamp is provided with an insulating layer 3, and the outer layer of the insulating layer 3 is coated with a thin heat conductive material. 4. It is preferred to use a thermal grease. The outermost layer is covered with a heat dissipation layer 5

 In addition, the utility model is superior to the prior art in that the heat dissipation layer 5 on the light-emitting surface and the backlight surface of the circuit board is uniformly provided with a plurality of heat dissipation holes for increasing the heat dissipation surface thereof to achieve better heat dissipation effect.

The above description is only a preferred embodiment of the invention, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the invention. Improvements and retouching should also be considered as protections created by the present invention.

Claims

Rights request  1. A circuit board for a double-sided heat-dissipating LED display, comprising an LED lamp and a circuit board, characterized in that the surface of the circuit board is coated with an insulating layer, and the insulating layer is coated with a thin layer of heat conductive material, a heat conductive material There is a heat dissipation layer outside, and a plurality of heat dissipation holes are evenly arranged on the bright surface and the back surface of the heat dissipation layer, and the LED lamps are mounted on the circuit board.  2. The heat dissipating device for a large-screen LED display screen according to claim 1, wherein the heat conductive material is a thermal grease.