Abstract: A solid state power supply and light emission controller for a cold cathode luminescent tube which converts alternating current line voltage, or direct current voltage, into a variable repetition rate pulse alternating current voltage for energizing the tube and for controlling the light emission of the tube. The power supply provides for essentially constant light emission from the tube in the presence of variations in the internal impedance of the tube, variations in ambient temperature, and variations in line voltage. The power supply finds use, for example, with cold cathode luminescent tubes such as neon tubes, and the like.

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.

Abstract: A visor assembly for a pedestrian traffic signal which is intended to be mounted across the face of the signal and which serves to screen the signal from sunlight. The visor assembly includes a frame, and an "egg-crate" grating mounted in the frame, the grating being composed of a multiplicity of intersecting webs which provide a plurality of rectangular openings. In accordance with the invention, the grating is locked in the frame by brackets which are slotted to receive the webs, and which are adhesively bonded to one of the webs and to the frame to protect the assembly from vandalism.