Luminaire having ballast circuitry in photocontrol housing

Details Luminaire having ballast circuitry in photocontrol housing Luminaire having ballast circuitry in photocontrol housing

1974-06-21

1976-04-06

Greiner, Robert P.

Buckles, buttons, clasps, etc.

240 114R, 250239, F21S 110

Patent

active

039492117

ABSTRACT:
Outdoor lighting fixture utilizes lamp ballast which includes both solid-state control circuitry and a relatively massive inductor ballast. The solid-state control circuitry is mounted in a separate housing, such as the photocontrol housing, which is affixed to the exterior of the fixture by means of a plug-type receptacle, and the relatively massive inductor portion of the ballast is contained within the fixture body. Those portions of the solid-state control circuitry which require cooling use the separate housing as a heat sink. If troubles are encountered in the solid-state circuitry, the entire circuit can be replaced simply by plugging in a new unit.

REFERENCES:
patent: 3048833 (1962-08-01), Bernheim
patent: 3222572 (1965-12-01), Powell, Jr.
patent: 3486070 (1969-12-01), Engel
patent: 3590316 (1971-06-01), Engel et al.
patent: 3621337 (1971-11-01), Kappenhagen

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