Screen fixing device of projection type television system

Details Screen fixing device of projection type television system Screen fixing device of projection type television system

1991-11-15

1994-03-29

Coles, Sr., Edward L.

Television

Video display

Projection device

312 72, 248918, 248919, 348787, 348779, 348383, 348789, H04N 574, H04N 530, A47B 500

Patent

active

052990176

ABSTRACT:
A screen fixing device of a projection type television system including a projection unit comprises a fixing frame for detachably fixing a screen, the fixing frame being provided with a plurality of through holes each extending laterally of a front opening frame surround a front opening section at which the screen is provided, and a fastening screw penetrating each through hole for fixing the fixing frame to the front opening section of the projection unit. The fixing frame has substantially an L-shaped cross section at least at a portion through which the through hole is formed. Instead of the fixing frame, a fixing block may be used. The fixing device may comprise a plurality of first fixing members for detachably fixing the screen with a space with each other and a plurality of second fixing members for fixing the first fixing members to the front opening section of the projection unit. The first fixing members are formed of a transparent material. Each of the first fixing members and each of the second fixing members are fixed integrally together or formed integrally.

REFERENCES:
patent: 4866530 (1989-09-01), Kalua
patent: 4903137 (1990-02-01), Wakasa
patent: 5119271 (1992-06-01), Aoki et al.
patent: 5204750 (1993-04-01), Ferraroni

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