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US 7,018,048 B2Granted
Projector exhaust fan
AssigneeSeiko Epson Corporation
InventorsShinsuke Ito, Toshio Matsumiya
Life of this patent
Estimating the term…
Abstract
An exhaust sirocco fan exhausts the air inside the projector outside. An inlet of the exhaust sirocco fan is disposed along the plane orthogonal to the optical path plane formed by the optical unit, i.e. along the thickness direction of the projector. In other words, the optical unit or the exhaust sirocco fan need not be disposed in the thickness direction of the projector in an overlapping manner. Therefore, by efficiently sucking the inside air, the exhaust efficiency can be enhanced and calmness can be ensured in the projector.
Claims8
A projector comprising:
- a light source device;
- a power source unit that supplies power to the light source device;
- an optical modulator that modulates light flux emitted from the light source device according to image information;
- a projection optical system that projects the light flux modulated by the optical modulator in an enlarged manner;
- and
- an exhaust fan that exhausts air inside the projector outside, the exhaust fan being a centrifugal fan that exhausts the air sucked from the direction of a rotary shaft of the fan in the tangential direction of the rotation, and an inlet of the centrifugal fan disposed along the thickness of direction of the projector, and the centrifugal fan being disposed between the light source device and the power source unit.
3 more elements
Dependencies are inferred from the claim text.