Patent ID: 7806532

Claim:
A projector comprising: a light source; a light modulating device that modulates the flux of light emitted from the light source on the basis of image information to form an optical image; a projection optical system that projects the formed optical image; and an exterior housing that accommodates the light source, the light modulating device, and the projection optical system, wherein an opening that introduces air from the outside of the exterior housing into the inside thereof is formed in the exterior housing, an object to be cooled, a duct connecting the opening to the object to be cooled, and a filter purifying the air introduced from the opening are provided inside the exterior housing, a cooling fan that sucks the air having been purified through the filter and sends the air to the object to be cooled are provided in the duct, a first sealing member that fills a gap is interposed between the cooling fan and the duct; and a second sealing member that fills a gap is interposed between a side wall of the exterior housing where the opening is formed and the filter.