| 摘要 |
PURPOSE: An optical semiconductor lighting device is provided to efficiently remove dust from the upper side of the outside of a reflector by equally arranging the upper side of the reflector and the upper side of the lateral side of a heat sink. CONSTITUTION: One side of a housing is open. An optical source module(500) is arranged in the housing and includes an optical semiconductor device. A fan(400) is arranged near the optical source module and inputs air to the optical source module. A reflector(700) determines the radiation angel of light by reflecting the light from the optical source module. The lower side of the housing is separated from a part of the outside of the reflector or the shape of the lower side of the housing is changed to discharge air from the fan to the outside of the reflector. |
