Patent ID: 7309131
Filing Date: 2007-12-18
Classification: G03B

Abstract:
1. A projector comprising: a first partition member oriented along an axial width of the projector, separating a housing of the projector into a first substantially isolated chamber and a second substantially isolated chamber; a fin member positioned in close proximity to an end of the partition member to facilitate further isolation between the first substantially isolated chamber and the second substantially isolated chamber; a light source for producing light is housed in the first substantially isolated chamber; an optical system, a region of which is housed in the second substantially isolated chamber, including an image generating element producing image light from a light produced by the light source and a projection lens for projecting the image light produced by the image generating element; a first fan for controlling the temperature rise near the light source, and forming a first end of the first substantially isolated chamber; a second fan for controlling the temperature rise of the optical system, and forming a first end of the second substantially isolated chamber; the first partition member and the fin member substantially separating airflows resulting from the first fan and the second fan from intake at the first end of the first and second substantially isolated chambers to exhaust at a second end of the first and second substantially isolated chamber, preventing a combining of the airflows within the housing of the projector; and a front cover having titled exhaust slots formed for exhausting the hot air from said first and second fans when said front cover is mounted, in such a manner as to direct the exhaust air away from said projection lens; said front cover and said projection lens provided on the same side of the projector, said front cover further comprises an inner grille of a black body for preventing the light from escaping; and said inner grille is provided with the fin member and openings tilted in such a manner as to direct the exhaust air from the first and the second fans and the light from the light source away from said projection lens when said front cover is mounted.