Patent ID: 7237906

Claim:
A projection-type image display apparatus comprising: a body comprising an air inlet and an air outlet and accommodating a heating element; a lamp unit comprising a light-source lamp and a housing that accommodates the light-source lamp and that comprises an air intake and an exhaust opening, the exhaust opening communicating with the air outlet; a duct unit comprising a first end adjacent to the air inlet, a second end adjacent to the air intake, and a flow channel connecting the first end and the second end; a radiating unit thermally connected to the heating element, at least part of the radiating unit being disposed inside the flow channel of the duct unit; and a fan disposed between the radiating unit in the flow channel and the second end of the duct unit, the fan drawing air from the air inlet through the first end of the duct unit and sending the air to the air intake through the second end of the duct unit.