Patent ID: 8322867

Claim:
A projector apparatus comprising: a housing having an air inlet and an air outlet; a light source device provided in the housing; an image projection unit provided in the housing and configured to generate an image projection light beam from light from the light source device and to emit the image projection light beam so as to project an image onto a screen; and a cooling device configured to cool the light source device and the image projecting unit, wherein the cooling device includes a cooling passage extending from the air inlet to the air outlet via an air filter section, the light source device, and the image projecting unit, and a fan configured to suck in outside air from the air inlet, to cause the outside air to flow through the cooling passage, and to exhaust the outside air out of the housing from the air outlet, wherein the air filter section includes a cylindrical filter body, a filter support member configured to support the filter body, and a rotating unit configured to rotate the filter support member on a center axis of the filter body, and wherein, in the air filter section, after the outside air flows from an outer peripheral surface to an inner peripheral portion of the filter body and dust is removed from the outside air by the filter body, the outside air flows out of the filter body in an axial direction of the filter body.