Image projection apparatus

Details Image projection apparatus Image projection apparatus

2007-08-21

2007-08-21

Perkey, W. B. (Department: 2851)

Optics: image projectors

Temperature control

Blower

C353S057000, C353S060000

Reexamination Certificate

active

10983614

ABSTRACT:
An image projecting apparatus including a base, a ballast unit disposed on a top of the base, a display device disposed adjacent to the ballast unit, a cooling fan disposed on the base and introducing external air to the ballast unit, and a guide duct in communication with the ballast unit, guiding the external air blown by the cooling fan to the display device. Thus cooling down of heat generating units such as a lamp unit, a ballast unit, a colorwheel unit, etc., with a minimized number of fans is provided while reducing noise generated therefrom and increasing cooling efficiency.

REFERENCES:
patent: 5722753 (1998-03-01), Okada
patent: 5951136 (1999-09-01), Furuhata et al.
patent: 6484854 (2002-11-01), Yoshimoto
patent: 6558004 (2003-05-01), Ito et al.
patent: 6814446 (2004-11-01), Yamada et al.
patent: 05-005947 (1993-01-01), None
patent: 20-0151071 (1999-04-01), None

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