Lamp device of liquid-crystal projection apparatus

Optics: image projectors – Housing

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Details

353 57, G03B 2114

Patent

active

057227535

ABSTRACT:
There is disclosed a liquid-crystal projection apparatus having a lamp device which has such a sealed or closed construction that a sound, produced upon bursting of a light-emitting tube, is suppressed and that the scattering of glass pieces is prevented. In this liquid-crystal projection apparatus, a lamp is sealed by a support member, supporting a concave mirror having two notches and an outer casing and a flat glass panel and an air passage is formed in the support member. The lamp is releasably attached to a lamp fixing member and two open portions are formed in this lamp fixing member and a cooling fan is fixedly connected to one of the two open portions.

REFERENCES:
patent: 3642361 (1972-02-01), Steu
patent: 4787737 (1988-11-01), Ogawa et al.
patent: 4925295 (1990-05-01), Ogawa et al.
patent: 5418586 (1995-05-01), Fujimori et al.

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