Rear projector
AssigneeSeiko Epson Corporation
InventorsJun Arai, Haruyoshi Yamada
Life of this patent
Estimating the term…
Abstract
A rear projector (1) has a closed space (530) including an inside of an upper cabinet (12) and an electric optical device (44), where the electric optical device (44), a sirocco fan (541) located below the electric optical device (44), a duct (542) covering the upper side of the electric optical device (44) and a heat sink (543) attached to the upper cabinet (12) are disposed and an upper cabinet cooling system (600) that cools the interior of the closed space (530) in a circulative manner is provided in the closed space (530), thereby preventing invasion of duct etc. and providing high-quality image.
Claims9
A rear projector comprising:
- an image generator having an electric optical device that modulates the light beam irradiated by a light source to form an optical image in accordance with image information and a projection optical system that enlarges and projects the optical image;
- a casing that disposes the image generator;
- and
- a screen exposed on one of the sides of the casing onto which the optical image formed by the image generator is projected,
- the casing having a first casing that disposes the image generator and a second casing provided with the screen,
- the electric optical device being located in a closed space including a space inside the second casing,
- wherein a circulation fan that circulates an air inside the closed space is provided in the closed space.
A rear projector comprising:
- an image generator having an electric optical device that modulates the light beam irradiated by a light source to form an optical image in accordance with image information and a projection optical system that enlarges and projects the optical image;
- a casing that disposes the image generator;
- and
- a screen exposed on one of the sides of the casing onto which the optical image formed by the image generator is projected,
- the casing having a first casing that disposes the image generator and a second casing provided with the screen,
- the electric optical device being located in a closed space,
- a duct inside the second casing, the duct guiding the air discharged by a circulation fan provided in the closed space along the inner circumference of the second casing.
Dependencies are inferred from the claim text.