Combination outdoor daytime/nighttime advertising billboard

Details Combination outdoor daytime/nighttime advertising billboard Combination outdoor daytime/nighttime advertising billboard

1994-02-04

1996-10-29

Kostak, Victor R.

Television

Video display

Projection device

40560, 359449, 353 28, H04N 574

Patent

active

055701388

ABSTRACT:
A combination outdoor daytime
ighttime outdoor advertising display billboard is provided having a surface for displaying a fixed image during the daytime and a projection screen apparatus which automatically unrolls to present a projection screen for displaying a projected image during the nighttime. A projector placed in front of the billboard functions to project one or more images onto the projection screen. The projection screen and the projector are controlled by a photoelectric sensors that automatically unrolls the projection screen and activates the projector during the nighttime and automatically rolls up the projection screen and deactivates the projection means during the daytime.

REFERENCES:
patent: 1026126 (1912-05-01), Roffy
patent: 2491184 (1949-12-01), Joss
patent: 3020798 (1962-02-01), Chrisman
patent: 3069970 (1962-12-01), Pierson
patent: 3198066 (1965-08-01), McGhee
patent: 4516156 (1985-05-01), Fabris et al.
patent: 4739567 (1988-04-01), Cardin
patent: 5257017 (1993-10-01), Jones et al.

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