Patent ID: 8403497

Claim:
A projector, comprising: a casing, having a first air-outlet, a second air-outlet and a first air-inlet, the first air-outlet, the first air-inlet and the second air-outlet being disposed at a first side, a second side and a third side of the casing respectively; an optical module, disposed in the casing and near the second side; a light source module, disposed in the casing and having a light axis; a blowing fan, disposed in the casing, a first air-outlet surface of the blowing fan facing to the light source module, wherein when the blowing fan operates, a first initial airflow entering into the casing from the first air-inlet flows through the optical module and then an airflow generated by the blowing fan on a first air-outlet surface of the blowing fan cools the light source module; and a first axial fan, disposed in the casing and an angle being formed between the first axial fan and the first side of the casing; wherein the first axial fan and the blowing fan are disposed corresponding to two sides of the light axis respectively, the first axial fan is near an air-outlet and used to directly send the air around the light source module out of the casing through the air-outlet, and the air-outlet is selected from a group formed by the first air-outlet and the second air-outlet.