Projector
AssigneeSeiko Epson Corporation
InventorsMutsuya Furuhata, Takeshi Takizawa, Motoyuki Fujimori, Akitoshi Kuroda, Shinji Haba, Kiyoshi Miyashita
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Abstract
A projection display device capable of improving cooling efficiency of the power unit includes a light source lamp unit, a projection lens unit, an exhaust fan provided near the light source lamp unit for ventilating an outer case, and a ventilating path provided inside the power unit. A suction fan is provided at the inlet of the ventilating path which is connected to the cooling air intake port through a duct cover to directly conduct fresh air into the ventilating path. Because the interior of the power unit is cooled by fresh air which is cooler than the air inside the outer case, cooling efficiency is enhanced.
Claims9
A projector, comprising:
- an optical unit including a light source lamp and a projection lens, the optical unit forming an optical image in response to image information by optically treating light beams emitted from the light source lamp and expansively projecting the optical image through the projection lens;
- a power unit including a ventilating path provided inside the power unit for circulating cooling air;
- an outer case that stores the optical unit and the power unit;
- a first cooling air intake port located on the outer case that provides cooling air from outside of the outer case to the optical unit;
- and
- a second cooling air intake port located on the outer case that directly conducts cooling air from the outside of the outer case to the ventilating path, said second cooling air intake port comprising:
- an air inlet provided on the power unit, and
- a duct connecting said second cooling air intake port and the air inlet.
A projector, comprising:
- an optical unit including a light source lamp and a projection lens, the optical unit forming an optical image in response to image information by optically treating light beams emitted from the light source lamp and expansively projecting the optical image through the projection lens;
- a power unit including an air inlet and an air outlet;
- an outer case that stores the optical unit and the power unit;
- a first cooling air intake port located on the outer case that provides cooling air from outside of the outer case to the optical unit;
- a second cooling air intake port located on the outer case that directly conducts cooling air from the outside of the outer case to the air inlet;
- and
- an exhaust vent provided on the outer case that directly conducts air exhausted from the air outlet to the outside of the outer case.
Dependencies are inferred from the claim text.