Projection type image display unit

Details Projection type image display unit Projection type image display unit

2003-12-11

2008-08-05

Blackman, Rochelle-Ann (Department: 2862)

Optics: image projectors

Temperature control

Blower

C353S055000, C353S060000, C353S061000, C349S161000, C348S748000, C096S095000, C096S098000

Reexamination Certificate

active

07407293

ABSTRACT:
An ion wind generator is arranged in the vicinity of a light source. The ion wind generator allows an air flow by negatively ionizing air by corona discharges using negative side needle electrodes, and drawing the negatively-ionized air using a ground side mesh electrode. High-temperature air surrounding the light source is drawn by the air flow and exhausted from an exhaust port at a rear side of a casing. An ozone decomposition catalyst filter is provided in the exhaust port. Ozone (O3) is generated by the corona discharges in the ion wind generator. However, the ozone is decomposed by passing through the ozone decomposition catalyst filter provided at the exhaust port.

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Supllemental European Search Report, issued in European Patent Application No. 03778848.6-2209, dated on Feb. 15, 2008.

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