Image projection apparatus

Details Image projection apparatus Image projection apparatus

2011-05-03

2011-05-03

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Temperature control

Blower

Reexamination Certificate

active

07934839

ABSTRACT:
The image projection apparatus includes a light source lamp including a discharge light emitting tube and a reflector, the discharge light emitting tube including a light emitting portion disposed inside of the reflector and an electrode portion disposed outside of the reflector, a cooling fan, and a duct configured to guide a cooling air flowed by operation of the cooling fan toward the light source lamp. The duct includes a first air guiding portion and a second air guiding portion that cause parts of the cooling air to respectively proceed toward a first area and a second area opposite to each other on an outer circumferential surface of the light emitting portion, and a third air guiding portion that causes another part of the cooling air to proceed toward the electrode portion.

REFERENCES:
patent: 6976760 (2005-12-01), Ito et al.
patent: 7350926 (2008-04-01), Fukuda et al.
patent: 2006/0061996 (2006-03-01), Wang et al.
patent: 06-338212 (1994-12-01), None
patent: 2002-174857 (2002-06-01), None

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