Photosensitive illuminating display

Details Photosensitive illuminating display Photosensitive illuminating display

1988-03-22

1990-06-26

Mis, David

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

40568, H05B 3702, G09F 1304

Patent

active

049374990

ABSTRACT:
An illuminated house sign is described which switches on and off in response to ambient light conditions. A photocell senses the ambient light and controls the supply of electrical power to a fluorescent tube to switch the tube on when the ambient light falls beneath a predetermined value and which switches the tube off when the ambient light exceeds the predetermined value. The control electronics are mounted within a sign housing and can be driven by domestic 115 VAC electrical supply.

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