Mobile sign with solar panel

Details Mobile sign with solar panel Mobile sign with solar panel

1994-08-05

1996-08-06

Johnson, Blair

Card, picture, or sign exhibiting

Signs

Sign support

340908, 40590, 40601, 40612, G09F 1300

Patent

active

055422039

ABSTRACT:
A mobile sign with a solar panel for warning motorists of highway problems. The mobile sign comprises a wheeled vehicle, an electrically powered sign panel mounted on the wheeled vehicle, a chargeable battery for powering the sign panel, and a solar panel for charging the battery. The solar panel is rotatable and tiltable relative to the wheeled vehicle. The sign panel is independently rotatable relative to the wheeled vehicle. The sign panel has a low-glare, high-contrast display that also improves the lifetime of the display's electronic or mechanical components by reducing heating of the display due to the sun.

REFERENCES:
patent: 4077144 (1978-03-01), Smits
patent: 4281369 (1981-07-01), Batte
patent: 4319310 (1982-03-01), Kingsley
patent: 4421943 (1983-12-01), Withjack
patent: 4481562 (1984-11-01), Hickson
patent: 4486820 (1984-12-01), Baba et al.
patent: 4947300 (1990-08-01), Wen
patent: 4977488 (1990-12-01), Spotts et al.
patent: 4989124 (1991-01-01), Shappell
patent: 5217296 (1993-06-01), Tanner et al.
patent: 5253150 (1993-10-01), Vanni
ADDCO Manufacturing Co., Inc. brochure, front and back side entitled The Best Sign Under the Sun. (Admitted prior art).

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