Patent ID: 9528669
Filing Date: 2016-12-27
CPC Classification: F21S,F21W

Claim Text:
1. A rotatable lamp holder comprising lighting elements ( 3 ), wires, a power supply ( 1 ) and a motor ( 2 ) connected to the power supply ( 1 ); the motor ( 2 ) comprising a rotational output shaft ( 20 ) extending outwardly; the lighting elements ( 3 ) being provided at a distal end of the rotational output shaft ( 20 ) distal from the motor ( 2 ); wherein a middle portion of the rotational output shaft ( 20 ) is being sleeved with a first printed circuit board (PCB) ( 4 ) and a second PCB ( 5 ) juxtaposed with each other; the first PCB ( 4 ) is positioned between the second PCB ( 5 ) and the motor ( 2 ); the first PCB ( 4 ) is connected to the power supply ( 1 ) via the wires, and the second PCB ( 5 ) is connected to the lighting elements ( 3 ) via the wires; the first PCB ( 4 ) is provided with a first axial hole ( 40 ) for support of the rotational output shaft ( 20 ) and for the rotational output shaft ( 20 ) to pass through; a side surface of the first PCB ( 4 ) facing the second PCB ( 5 ) is provided with a positive pole coil ( 41 ) and a negative pole coil ( 42 ); the positive pole coil ( 41 ) and the negative pole coil ( 42 ) are concentrically arranged having the first axial hole ( 40 ) being a common center of circle; the second PCB ( 5 ) is provided with a second axial hole ( 50 ) for fixing the rotational output shaft ( 20 ) and for the rotational output shaft to pass through ( 20 ); the second PCB ( 5 ) is rotatable synchronously in the same direction with the rotational output shaft ( 20 ) via the second axial hole ( 50 ); a side surface of the second PCB ( 5 ) facing the first PCB ( 4 ) is provided with a positive pole conductive contact piece ( 51 ) and a negative pole conductive contact piece ( 52 ); the positive pole conductive contact piece ( 51 ) contacts with the positive pole coil ( 41 ); the negative pole conductive contact piece ( 52 ) contacts with the negative pole coil ( 42 ).