Rotatable lamp socket for incandescent pedestrian traffic signal

Details Rotatable lamp socket for incandescent pedestrian traffic signal Rotatable lamp socket for incandescent pedestrian traffic signal

1979-08-06

1981-08-11

Desmond, Eugene F.

Geometrical instruments

339119L, 339125L, 340 44, H01R 13645

Patent

active

042831016

ABSTRACT:
A rotatable lamp socket for an incandescent pedestrian traffic signal, or other illuminating or signalling device, is provided, in which the socket is mounted on a vertical surface and an incandescent lamp is held by the socket in a horizontal position. In the embodiment to be described, two such rotatable sockets are mounted on a vertical heat conducting plate in a case, the plate serving as a mounting means for the sockets and also as a heat sink. A reflective housing is also mounted in the case, and a partition divides the housing into two separate compartments, each with a parabolic-shaped rear wall covered with a suitably reflective substance. Two incandescent lamps are mounted horizontally in the sockets to be located in the respective compartments at the focal point of the corresponding parabolic-shaped rear wall. The case has an open front, and a three-line face place is provided which fits over the open front and which has the words "DONT WALK" formed thereon in position over one of the compartments, and the word "WALK" inscribed thereon in position over the other compartment. A detent assembly is provided at the base of each socket, so that each lamp may be rotated about a horizontal axis from one angular position to another until it has an angular position at which its filament hangs down from the supporting wires to provide long operating life for the lamps.

REFERENCES:
patent: 1349312 (1920-08-01), Barrett
patent: 2191292 (1940-02-01), Spence
patent: 2766434 (1956-10-01), Gear

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