Projection type video display

Details Projection type video display Projection type video display

2007-05-01

2007-05-01

Dowling, William C. (Department: 2851)

Optics: image projectors

Temperature control

Blower

Reexamination Certificate

active

10509114

ABSTRACT:
An ion wind generator (20) is arranged on one side of a light source (1). The ion wind generator (20) produces an air current by negatively ionizing air by corona discharges at a needle electrode (21), or negative side, and drawing the negatively-ionized air at a cylindrical electrode (22), or positive side. The air current blows toward the light source (1) and removes heat generated by the light source (1). An ultraviolet ray from the light source (1) is introduced to a vent of the ion wind generator (20) by a first dichroic mirror (4) and a ultraviolet ray reflection mirror (17). Though air exhausted from the vent includes ozone (o3) produced by corona discharges, the ozone is decomposed by the ultraviolet ray.

REFERENCES:
patent: 2005/0213048 (2005-09-01), Ikeda et al.
patent: 2006/0017889 (2006-01-01), Ishii et al.
patent: 2006/0061735 (2006-03-01), Hsu
patent: 08-238441 (1996-09-01), None
patent: 10-241556 (1998-09-01), None
patent: 2000-171920 (2000-06-01), None
patent: 2001-222065 (2001-08-01), None
patent: 2001-330890 (2001-11-01), None

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