Abstract:In order to reduce the manufacturing cost (radiator quality) of high power LED downlight and ensure the heat dissipation ability, the orthogonal experimental method was used to optimize the design of radiator. The effects of 6 key factors, such as radiator substrate diameter, substrate thickness, fin thickness, fin pitch, fin height and fin profile diameter, on the radiator weight and LED temperature were analyzed. Then the modeling and heat dissipation simulation of the LED downlight were carried out with CFD thermal simulation software, and finally a relatively ideal optimization result was achieved. Simulation and experimental results show that, although LED temperature decrease slightly using the optimized LED downlight radiator, the radiator quality decreases more than 30%, realizing the optimization target very well.
