Numerical computation has been performed to determine the influence of heat sink design and insulation material on thermal dissipation of LED Lamp. The numerical study includes the natural convection and radiation heat transfer. Out of 6 parameters studied in the paper, the conductivity of the insulation material for PBA was the most dominant parameter to cool the PBA component. By changing the parameters, maximum temperature of PBA component, Nusselt number at the surface of heat sink and the contribution ratio of radiation compared to total heat dissipation rate are calculated to find the optimized shape of the heat sink. In this work, the optimized number of fins and thickness were 15 and 0.5-0.6 mm, respectively. These two parameters were also key parameters for the shape of the heat sink and mass in practical application. In ideal condition, the thermal conductivity of electrical insulation is the most influential parameter to cool down PBA component. (C) 2016 Elsevier Ltd. All rights reserved.4
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