LED display of the cooling should be how to solve the problem
Many other advantages in one of the LED display, such as applications in the market like a duck to water, walking in the street, everywhere is visible LED products. We all know that LED display afraid, afraid of hot water, hot effect the performance of the LED display is fatal, a direct impact on screen using the stability of the process and the service life of the screen. Therefore, in order to reduce the influence of heat on screen, we need to clear heat dissipation characteristics of display screen, and then to display make reasonable heat dissipation design.
You will be some bad effects on the LED display, such as the impact on the service life of the screen: under the environment of high temperature for a long time may cause the LED decay faster, cause the screen body simply can not meet the design service life; Use for a long time will cause the flower screen: poor cooling or uneven may result in uneven led lights around the cooling, and the attenuation of red, green, blue three kinds of led lights are more likely to lead to uneven color screen appears, the led lamp brightness everywhere not definitely lead to the whole screen flowers at the scene of the screen.
To solve the problem of LED display in the using process of heat dissipation, from the following several aspects:
1, fan cooling, lamp shell internal reinforced with long life high efficiency fan cooling, this method is low cost, good effect. Fan is the trouble, however, want to change but also not suitable for outdoor, this design is relatively rare.
2, surface radiation heat treatment, lamp shell surface radiation heat treatment, simple is daub radiation heat paint, can be taken away from the lamp shell surface heat radiation way.
3, aluminum radiator fins, this is the most common way of heat dissipation, use aluminum radiator fins as a part of the shell to increase the cooling area.
4, air, fluid mechanics, the use of lamp shell shape, make air convection, this is the lowest cost to strengthen the cooling way.
5, thermal conductive plastic shell, when the plastic shell injection molding filling thermal conductive materials, increase the plastic shell heat conduction and heat capacity.
6, liquid, the ball bubble, using liquid ball bubble packaging technology, the thermal conductivity of high transparent liquid filled in the ball bubble lamp body. This is in addition to the reflective principle, at present only use smooth thermal conductivity, heat dissipation of the LED chip technology.
7, heat pipe cooling, the use of heat pipe technology and heat from the LED full-color display chip guide to shell the cooling fins. In the large lamps and lanterns, such as street lamps is a common design.
8, the use of heat integration of thermal conductivity, high thermal conductivity of ceramic, the purpose of the lamp shell heat dissipation is to reduce the working temperature of LED full-color display chip, due to the LED chip we often metal thermal conductivity, thermal expansion coefficient and material expansion coefficient difference, LED chip can not be welded directly, in order to avoid the high and low temperature thermal stress damage LED full-color display chip. The latest high thermal conductive ceramic material, the thermal conductivity is close to aluminum, expansion system can be coordinated to be synchronous with the full color LED display chip. So it can be heat conduction, heat integration, reduce the heat transfer process in the middle.