Thermal design based on thermosyphon heat sink of high-power LED street light

LED (light emitting diode) is called the fourth generation of lighting, which has already been used in illumination systems. In LED street light device, the temperature of high-power LED is an important parameter and it affects the entire performance of system. A method researching radiators based on finite element analysis was introduced. In this paper, the thermal model of LED street light based on thermosyphon heat sink was introduced, and simulated the changing of parameters of radiator by ANSYS. Research conclusions show this thermosyphon heat sink has a good performance.