Illumination – Housing – With cooling means
Reexamination Certificate
2008-04-29
2008-04-29
Tso, Laura (Department: 2875)
Illumination
Housing
With cooling means
C362S294000, C353S058000
Reexamination Certificate
active
11822588
ABSTRACT:
Reduction of noise is achieved by devising an arrangement of heat generating parts such as a light valve element, an electric power source, a light source, etc. and an arrangement of cooling fans. In cooling the light source, the electric power source and liquid crystal panels, a cooling wind path for the liquid crystal panels and the electric power source is made separate from and independent of a cooling wind path for the light source that generates much heat, a cooling air volume is optimized for the respective cooling wind paths, and noise accompanying the rotation of the cooling fans is reduced. Also, by arranging the cooling fans substantially centrally of the respective cooling wind paths, that volume of noise, which leaks from air intake ports and air exhaust port that are opened to a housing of a unit, is reduced.
REFERENCES:
patent: 6540364 (2003-04-01), Takizawa et al.
patent: 6582082 (2003-06-01), Tiao et al.
patent: 7252416 (2007-08-01), Katayama et al.
patent: 2002/0015138 (2002-02-01), Ito et al.
patent: 10-233983 (1998-09-01), None
patent: 2000-81673 (2000-03-01), None
patent: 2002-122839 (2002-04-01), None
patent: 2002-258248 (2002-09-01), None
patent: 2002-373524 (2002-12-01), None
Chinese Office Action, with English Translation, issued in Chinese Patent Application No. 2004100310235, dated on Aug. 3, 2007.
Katayama Takeshi
Morita Tatsuo
Saito Hideharu
Tokushige Keiichiro
McDermott Will & Emery LLP
Tso Laura
LandOfFree
Projection type display unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Projection type display unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection type display unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3931043