Sanyo Electric Co., Ltd.

Tottori Sanyo Electric Co., Ltd.

Katsumi Tanaka

Toshihiro Saruwatari

Norio Nakagawa

Hideaki Kishi

Masayoshi Nishiura

Hiroaki Okamoto

A liquid crystal projector device of the present invention includes a lamp unit having a lamp and a reflector, and a cooling fan for cooling the lamp unit. The reflector includes a reflecting portion having a parabolic reflecting surface, and a plurality of side walls extending from the reflecting portion to surround the lamp. A first side wall of the plurality of side walls is provided with a first air intake opening and a second air intake opening for introducing air delivered from the cooling unit toward the lamp, at both sides of a plane including a central axis of the lamp and orthogonal to the first side wall. A wind blocking wall is defined between both air intake openings. An air discharge opening is formed on a second side wall opposed to the first side wall.

Projector device

A liquid crystal projector device of the present invention includes a lamp unit, an optical system for separating light emitted from the lamp unit into light of three primary colors, and an image synthesizer for generating image light of three primary colors from the light of three primary colors, and synthesizing the generated image light of three primary colors into color image light. The image synthesizer includes three liquid crystal panels for three primary colors and three incidence polarizing plates arranged at light incidence sides of the liquid crystal panels. Each of the incidence polarizing plates includes a glass base material and a polarizing film joined to a surface thereof. The surface area ratio of the glass base material to the polarizing film is set to 178%.

A liquid crystal display comprises a liquid crystal module () having a predetermined shape and having a back side covered with a metal back case (); a liquid crystal drive circuit board () electrically connected at one side of the liquid crystal module (), extending toward the central portion from the one side by predetermined length, having an electric connector () disposed on one side of the circuit board (), and mounted on the metal back case (); and a metal cover () having a cutout () large enough to expose the electric connector () and covering the circuit board (). An earth terminal () is provided at one edge of the cutout () and is brought into elastic contact with an earth contact () provided on one side of the circuit board () when the circuit board () is covered with the metal cover (). With this constitution, a stable ground line is formed in the display by a simple machining to avoid noise interference.

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Suita, Japan

Katsumi Tanaka