It is well known that the electrical energy added by the LED under working conditions is not completely converted into light energy, but a part is converted into heat energy. As the fourth generation of light source, LED has great development prospects due to its advantages of energy saving, environmental protection and long life. However, the LED is extremely sensitive to temperature, and the junction temperature rise will affect the LED life, light efficiency, light color (wavelength), color temperature, light shape (light distribution), and forward voltage, maximum injection current, luminosity, color, and electrical parameters. And reliability, etc. First, too high a temperature can cause permanent damage to the LED. When the LED temperature exceeds the carrying temperature of the chip, the luminous efficiency of the LED will be rapidly reduced, resulting in significant light decay and damage. In addition, if the junction temperature of the LED is too high, the packaging material will change to a rubbery state and the thermal expansion coefficient will rise sharply, resulting in LED open circuit and failure damage. Second, an increase in temperature will shorten the life of the LED. The life of an LED is manifested by its light decay, which means that the time is long and the brightness is getting lower and lower until it is finally extinguished. In addition, under temperature conditions, micro-defects in the material also accelerate the light decay of the LED device. At the same time, the higher the operating temperature, the faster the process will proceed, which is another major cause of LED light decay. In addition, the light decay of the phosphor is also a major cause of the LED light decay, because the phosphor's attenuation at high temperatures is very serious. The problem of heat dissipation is a major obstacle in the development of LEDs for use as lighting objects. Therefore, reducing the temperature of LEDs by various means has become a problem discussed by major manufacturers. Since the heat dissipation of LEDs is now more and more important to people, various heat dissipation technologies have also been applied to LED lighting technology! The production cost of the die-cast aluminum radiator is controllable, the heat-dissipating fin cannot be made thin, and it is difficult to maximize the heat-dissipating area. The heat dissipating fins of the extruded aluminum radiator can be made a lot of thin, and the heat dissipating area is maximized. When the cooling fins work, the air convection heat is automatically formed, and the heat dissipating effect is better, but the processing cost is higher. The stamped aluminum radiator is stamped and pulled up by the punching machine and the die for the steel and aluminum alloy, so that it becomes a cup-type radiator. The inner and outer periphery of the stamped heat sink is smooth, and the heat-dissipating area is limited due to the wingless. The heat-conducting plastic used in the plastic-coated aluminum radiator is a thermoplastic material. The fluidity, density, toughness and strength of the material are easy to be injection-molded. It has good resistance to cold and heat shock cycles, excellent insulation performance, and all-aluminum radiator. Compared with the processing cost is low, the processing cycle is short, the processing temperature is low; the finished product is not easy to be broken; the customer-supplied injection molding machine can carry out the differential shape design and production of the lamp, and the plastic-coated aluminum radiator has good insulation performance and is easy to pass the safety regulation. High thermal conductivity plastic radiator, high thermal conductivity plastic radiator An all-plastic radiator, its thermal conductivity is several times higher than ordinary plastic, with excellent heat conduction and heat radiation capability; it can be applied to new insulation of various power lamps. Heat sink material.