Abstract
To improve the heat dissipation efficiency of high-power LED light, an integrated high-power LED light with heat pipe structure is introduced. The LED chips and circuit are settled inside the heat pipe and are infiltrated into the insulated-working fluid. While the heat is generated from LED chips in the evaporator of the heat pipe, the thermal cycle is active. By the insulated-working fluid evaporating, the heat is transferred directly from the chips to the condenser, so as to reduce the temperature of the chips fleetly, improve the heat dissipation efficiency and life span. In addition, a flat integrated high-power LED light is made, and a contrast experiment is designed to test its heat dissipation. The insulated-working fluid chosen for the experiment is non-aqueous ethanol, and the filling rate is 60%. According to experimental result, with full power supplied, the temperature of the integrated LED light grew slower than the common high-power LED light. And the temperature is stabilized at 74 , while the common light is over 100 . It’s proved that the integrated LED light with heat pipe structure has better performance in heat dissipation.
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