Electronic lamp control apparatus

Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Electric switch controlled by the radiant energy responsive...

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Details

307141, 315360, H05B 3702

Patent

active

044517637

ABSTRACT:
A control for an outdoor lighting fixture which adds an extra off-on cycle to that imposed by a photoelectric cell control. At a predetermined time during the on period of the lighting fixture, the lamp of the fixture is shut off. This shut-off time had previously been determined as one during which traffic in the area is at a minimum. A set time after the shut off, the lamp is lit once again, this time being selected as a time when traffic is re-appearing. When the ambient light reaches the shut-off level of the photoelectric cell, the lamp is shut off for the day. In this way, the lamp is turned off for a timed period for the purpose of reducing the energy required by the lamp for the dark hours of the night.

REFERENCES:
patent: 2295894 (1942-09-01), Dewan
patent: 4008415 (1977-02-01), De Aliva-Serafin et al.
patent: 4209728 (1980-06-01), Membreno
patent: 4292570 (1981-09-01), Engel

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