Abstract: Walking on the street now, there are conspicuous LED products everywhere. We all know that LED electronic display
s are afraid of heat and water, and heat has a fatal effect on the performance of the led display, which directly affects the stability of the use of the led electronic display and the service life of the display. To solve the heat dissipation problem of the screen in use, it is necessary to start from the following Walking on the street now, there are conspicuous LED products everywhere. We all know that LED electronic displays are afraid of heat and water, and heat has a fatal effect on the performance of the led display, which directly affects the stability of the use of the led electronic display and the service life of the display. To solve the heat dissipation problem of the during use, it is necessary to start from the following aspects: 1. Thermally conductive plastic shell: Fill the plastic shell with thermally conductive material during injection molding to increase the thermal conductivity and heat dissipation capacity of the plastic shell. 2. Aerodynamics: Using the shape of the lamp housing to create convective air, this is the lowest cost way to enhance heat dissipation. 3. Aluminum fins: This is the most common way to dissipate heat. Aluminum fins are used as part of the shell to increase the heat dissipation area. 4. Surface radiation heat dissipation treatment: The surface of the lamp housing is treated with radiation heat dissipation. The simple method is to apply a radiation heat dissipation paint, which can take the heat away from the surface of the lamp housing by radiation. 5. Heat pipe heat dissipation: heat pipe technology is used to guide the heat from the LED full-color display chip to the shell heat sink fins. It is a common design in large lamps, such as street lamps. 6. u200bu200bFan heat dissipation: Long-life and high-efficiency fans are used to enhance heat dissipation inside the lamp housing. This method has low cost and good effect. However, it is troublesome to change the fan and it is not suitable for outdoor use. This kind of design is relatively rare. 7. Liquid bulb: Using liquid bulb encapsulation technology, a transparent liquid with high thermal conductivity is filled into the bulb of the lamp body. This is currently the only technology that uses the light-emitting surface of the LED chip to conduct heat and dissipate heat in addition to the principle of light reflection. 8. Integration of heat conduction and heat dissipation-the use of high thermal conductivity ceramics, the purpose of lamp shell heat dissipation is to reduce the working temperature of the LED full-color display chip, because the expansion coefficient of the LED chip is very different from the expansion coefficient of our usual metal heat conduction and heat dissipation materials , LED chips can not be directly welded, so as to avoid high and low temperature thermal stress damage the full-color LED electronic display chip. The latest high thermal conductivity ceramic material, the thermal conductivity is close to aluminum, and the expansion system can be adjusted to synchronize with the LED full-color display chip. In this way, heat conduction and heat dissipation can be integrated and the intermediate process of heat conduction can be reduced. [LED unit board] [ installation] [LED electronic large screen]
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