The key to the quality of LED lamps in the heat dissipation?

Introduction: the application of heat sink materials, should not only focus on the heat dissipation coefficient, while ignoring the thermal resistance. If you can only see some kind of heat sink, heat paste, heat dissipation of heat transfer or thermal conductivity of the film is very good, that can be carried out by the heat conduction, may be disappointed.

LED lamp is stable, the quality is good or bad, and the lamp body itself is very important for heat dissipation, the current market high brightness LED lamp heat dissipation, usually use natural heat dissipation, the effect is not ideal. Heat is not ideal, the life of the lamp itself will be affected. The application of heat sink materials should not only focus on the heat dissipation coefficient, but ignore the thermal resistance. If you can only see some kind of heat sink, heat paste, heat dissipation of heat transfer or thermal conductivity of the film is very good, that can be carried out by the heat conduction, may be disappointed. The expected temperature therefore decreased and LED epitaxial will not overheat and decay, and can effectively prolong the service life of the lamp inspection clearance, may not occur.

From the substrate etching on the tin coating, printing ink, LED backlight protection film into the oven, the whole plate leveling, paste thermal conductive adhesive film, with glue or lock the heat dissipation module with a cumbersome process that has good thermal conductivity, heat resistance impedance will be defeated. The air, the combination of the pores are not closed, the heat sink, the heat of the fuel oil after the formation of volatile silicon powder, multilayer thermal conductivity of the film thickness, will form a thermal impedance. These multi-level thermal resistance will hinder the conduction rate of heat, heat conduction is very slow, and even less than the surface of the lamp, the heat accumulated continuously increase.

The key to the quality of LED lamps in the heat dissipation

On the surface of the aluminum substrate, the white backlight ink will not only be able to reflect, but also to lower the heat through the surface of the backlight ink out. Some manufacturers do not watch, with the general white text ink to replace the LED dedicated backlight ink, the equivalent of a layer of hard paint, the heat seal. After many failures, the existing manufacturers to accept new ideas and processes, focusing on the overall cooling program. Aluminum substrate to use LED dedicated heat dissipation white backlight ink coating, if the designated use of yellow backlight ink, will enhance the reflectivity to 91%.

The use of the soft ceramic heat dissipation paint on the copper foil substrate and the aluminum substrate can reduce the usage of the solar thermal conductive adhesive film and improve the breakdown voltage at a very low cost. To protect the lamps from the climate environment, the heat conduction effectively, save money and effective method is to spray soft ceramic heat dissipation paint. Only from the overall concept of heat dissipation, reduce thermal interference, is the key to acceptance of large LED lamps. Lamps and lanterns should be abandoned to protect the traditional plating or paint, these two methods will be sealed back to the heat.