Projector

Details Projector Projector

2005-11-22

2005-11-22

Nguyen, Judy (Department: 2851)

Optics: image projectors

Temperature control

Blower

C353S057000

Reexamination Certificate

active

06966654

ABSTRACT:
A projector comprises a light source device413in which a light source cooling air flow channel X for introducing a cooling air to an internal light source lamp411is formed and an internal housing47for housing an optical element unit600, which subjects the light beam emitted from this light source device413to an optical processing. The internal housing47is formed with a pair of optical element cooling opening portions471A,472A, which are oppositely arranged by mutually pinching the optical element unit600in order to allow a cooling air to pass through according to the arrangement of the optical element unit600. Further, the underside of the internal housing47is provided with a fan54, in which a suction port54A is directed to the opening portion471A and an exhaust port54B is connected to the light source cooling air flow channel X. Since an air flows along an arrow marked channel, the optical element unit600and the light source lamp411can be sufficiently cooled.

REFERENCES:
patent: 4925295 (1990-05-01), Ogawa et al.
patent: 5876105 (1999-03-01), Rodriquez, Jr.
patent: 6111630 (2000-08-01), Watanuki et al.
patent: 6422703 (2002-07-01), Wang et al.
patent: 6481854 (2002-11-01), Sugawara et al.
patent: 2001/0021006 (2001-09-01), Shimizu

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