Patent ID: 7758193

Claim:
A projection apparatus, comprising: a housing, provided with a top plate, a bottom plate and a plurality of side walls connected with said top plate and said bottom plate, and an air outlet disposed on said housing; a light source, installed in said housing adjacent to said air outlet; an imaging system, installed in said housing; an optical engine, installed in said housing between said imaging system and said light source; a first blower, installed in said housing and at one side of said light source, said first blower located at one end of said housing away from said air outlet, an exhaust port of said first blower facing a portion of said light source; and an axial fan, installed in said housing at said one side of said light source, and said light source being positioned between said air outlet and said axial fan, an exhaust port of said axial fan facing said light source, and a suction port of said axial fan being adjacent to a suction port of said first blower, wherein said plurality of side walls includes a first side wall, a second side wall, a third side wall, and a fourth side wall, said first side wall is adjacent to said second side wall, said third side wall is opposite said second side wall, and an air inlet is disposed on said third side wall, and wherein a power supply is disposed adjacent to said third side wall, said suction port of said first blower faces said power supply so as to receive air that passes over the power supply, and said suction port of said axial fan faces said fourth side wall.