Indication display unit for vehicles

Details Indication display unit for vehicles Indication display unit for vehicles

1992-05-13

1993-07-20

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

353 13, G09G 302

Patent

active

052297551

ABSTRACT:
Various indication display units, for vehicles provided with a head-up display including an indication projector with a display device at the ceiling of a vehicle and a reflecting device forwardly of a driver seat, have been introduced so far due to the fact that there are increasing requirements for space for the installation of many kinds of indicators in vehicles. The problem remains that the displayed image on the reflecting device can hardly be seen on the indication display unit of the conventional type when external strong rays of light are radiated to the above reflecting surface from outside the vehicle through the windshield, and a part of the ceiling reflected on the reflecting device together with the indicating image projected from the projector also causes a bad effect to the displayed image when the vehicle is illuminated by another vehicle following there behind. The indication display unit according to the present invention provides a reflected image of good quality excluding the above bad effects on the displayed image to be reflected on the reflecting device caused by external light radiated from outside the vehicle, by forming the projector more profoundly than the ceiling surface.

REFERENCES:
patent: 3457006 (1969-07-01), Brown et al.
patent: 4742389 (1988-05-01), Schiffman
patent: 4775218 (1988-10-01), Wood et al.
patent: 4831366 (1989-05-01), Iino
patent: 4837551 (1989-06-01), Iino
patent: 4908611 (1990-03-01), Iino
patent: 5099299 (1992-03-01), Aoki

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