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US 7,255,446 B2Granted
Projection type video display
AssigneeSanyo Electric Co., Ltd.
InventorsFumihiko Hamada, Akira Miyanaga, Masaaki Miyamoto, Takaharu Adachi
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AssigneeSanyo Electric Co., Ltd.
InventorsFumihiko Hamada, Akira Miyanaga, Masaaki Miyamoto, Takaharu Adachi
Estimating the term…
A projection type video display capable of reducing components in number, and attempting to improve a cooling efficiency and a silencing of the video display is provided. Three cooling fans are provided on a plate member arranged within a chassis of the video display of a liquid crystal projector. The plate member is arranged in such a manner as to be spaced apart from a bottom plate of a chassis of the video display in order to form a single external-air introducing duct. Double-bottomed structure is formed by the plate member, and the plate member is used as a bottom for arranging components. Each cooling fan sucks external air from the single external-air introducing duct, and blows the external air from a blowing duct to an object to be cooled (a light source, a liquid crystal display, and others).
A projection type video display that modulates light emitted from a light source by a video display panel, and projects this modulated light by a projection lens, comprising a plurality of cooling fans, a plate member arranged in such a manner as to be spaced apart from a bottom portion of a chassis of the video display so as to from double-bottomed structure in order to form a single external-air introducing duct, wherein a plurality of apertures are formed in the bottom portion, and each cooling fan is configured in such a manner as to suck external air from said single external-air introducing duct via the apertures being located below the plate member.
Dependencies are inferred from the claim text.