Rotating signal light

摘要

A rotating signal light for emergency vehicles in which a plastic lamp holder is mounted on a vertically disposed rotatable shaft. Upper and lower contact plates are mounted on the top and bottom of the lamp holder. The contact plates have spring contact fingers which engage the terminals on the lamps mounted on the holder. The bottom plate also constitutes a slip ring which is engaged by a brush mounted on the support for the shaft. A pushnut mounted on the top of the drive shaft has a frictional engagement with the upper contact plate for driving the plate and, hence, the lamp holder. The lamp holder has a symmetrical notched configuration allowing two of such holders to be mated, one inverted and rotated 90 DEG relative to the other, so that the holder assembly may mount four lamps.