Sanyo Electric Co., Ltd.

Akira Miyanaga

Takaharu Adachi

Fumihiko Hamada

Yosuke Nishihata

Masaaki Miyamoto

Yoshiharu Arioka

Hideaki Okaniwa

A filter unit includes an air filter, which captures dust from intake air, and a cleaning unit, which automatically cleans the air filter. The cleaning unit includes a rotation brush, which removes dust from the air filter, and a dust box, which extends parallel to the rotation brush. The dust box includes a dust inlet that opens toward the rotation brush and receives dust from the rotation brush. The dust box is removable from the filter unit.

Filter unit and video projector

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).

Projection type video display

Growing community of inventors

Daito, Japan

Akira Miyanaga