As with traditional chips, LED chips of LED Lights can also generate heat during operation. The heat volume is dependent on the light efficiency of the light. Under the effect of electricity power, the radiate compound of electron and hole can produce light, and then the radiated light near PN would need semiconductor media and encapsulation media of the led high bay chip to reach the outer space (air).Considering the current injection efficiency, radiating quantum efficiency and light extraction efficiency, finally only 30~40% of electricity is transformed to light, and the other 60-70% energy is transformed to heat.