Rear projector
AssigneeSeiko Epson Corporation
InventorsHaruyoshi Yamada, Jun Arai
Life of this patent
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Abstract
An intake opening (132L) is formed on a left lateral side (132) of a lower cabinet (13) and an exhaust opening (132R) is formed on a right lateral side (132) in a rear projector (1), where a cooling air introduced from the intake opening (132L) by a plurality of fans provided in the lower cabinet (13) flows along a front side of a screen to cool the interior of the projector to be finally discharged from the exhaust opening (132R), so that the air after cooling the interior which is discharged by the exhaust opening (132R) is prevented from entering into the intake opening (132L), thereby always introducing fresh cooling air to cool the interior efficiently.
Claims11
A rear projector, comprising:
- an image generator having an optical device that modulates a light beam irradiated by a light source in accordance with image information to form an optical image and a projection optical system that enlarges and projects the optical image;
- a box-shaped casing that accommodates the image generator;
- and
- a screen exposed on any one of lateral sides of the box-shaped casing that on which the optical image formed by the image generator is projected,
- wherein an intake opening that introduces a cooling air to the image generator is formed on a first lateral side of the casing adjacent to a first edge of the screen other than the lateral side provided with the screen and an exhaust opening that discharges the air after cooling the image generator is formed on a second lateral side of the casing adjacent to a second edge of the screen opposite to the first edge of the screen, and
- wherein a cooling channel for the cooling air to be flowed is formed inside the casing along the surface of the screen.
Dependencies are inferred from the claim text.