Thermal Model for LED Luminaire

摘要

Various electrical and thermal models can be found in literature but the thermal models developed for this paper, both the Spice equivalent circuit as well as the SolidWorks thermal simulation were built based on the assumption that there will be two ambient temperatures: one at the heat sink level and a different one above the primary lens of the LED. This difference is due to the fact that the LED is part of a lighting assembly that features a lens/light diffuser that prevents the exchange of fluids between the primary lens of the LED and the exterior of the assembly. In this paper the influence of the two different ambient temperatures on the LED temperature is studied.