Patent ID: 7621645

Claim:
A projector device comprising: a casing ( 1 ) having disposed therein a lamp unit ( 4 ) comprising a lamp ( 41 ) and a reflector ( 46 ), a cooling unit comprising a cooling fan ( 42 ) for cooling the lamp unit ( 4 ), and an optical system for generating color image light with the lamp unit ( 4 ) serving as a light source, the reflector ( 46 ) having a reflecting portion ( 46 a ) having a reflecting surface for reflecting light emitted from the lamp ( 41 ) toward the optical system, and a plurality of side walls ( 46 b - 46 e ) extending from the reflecting portion ( 46 a ) toward the optical system to surround the lamp ( 41 ), a first side wall ( 46 b ) of the plurality of side walls ( 46 b - 46 e ) being provided with an air intake portion for introducing air delivered from the cooling unit toward the lamp ( 41 ), with a second side wall ( 46 c ) opposed to the first side wall ( 46 b ) being provided with an air discharge opening ( 55 ) opposed to the air intake portion, the air intake portion of the reflector ( 46 ) being provided with a first air intake opening ( 53 ) and a second air intake opening ( 54 ) at both sides of a plane including a central axis of the lamp ( 41 ) and orthogonal to the first side wall ( 46 b ), with a wind blocking wall ( 56 ) being defined between both air intake openings ( 53 , 54 ), wherein the first air intake opening ( 53 ), the second air intake opening ( 54 ) and the air discharge opening ( 55 ) are each constituted of a plurality of small holes ( 57 , 58 ), and each of the small holes ( 57 ) constituting the first intake opening ( 53 ) and the second intake opening ( 54 ) has an opening area larger than that of each of the small holes ( 58 ) constituting the air discharge opening ( 55 ).