Lighting apparatus having optic-semiconductor

PURPOSE: A photo-semiconductor lighting device is provided to purify air within a factory or a workplace by arranging a dust collection module in the bottom side of a reflector and eliminating dust included in the air. CONSTITUTION: Housing(HS) comprises a case body(100) and a top cover(200) which is combined with the case body. A heat sink(300) is arranged in order to cover up the lower side of the case body. A fan(400) transfers external air which is provided through air injection hole to the heat sink. An optical source module(500) comprises one and more photo-semiconductor devices(520) which generates light. A diffusing plate(600) diffuses the light which is generated from the photo-semiconductor devices.