Patent ID: 7153001

Claim:
An auto lift ceiling lighting system comprising: a motor part providing a lifting operation of a lamp; rotary drums formed on both side of the coaxial shaft of the motor part; flat cables for supplying electrical power to the lamp, the flat cables wound on winding cores of the respective rotary drums; power supply parts for supplying the electrical power to the flat cables; a body cover part housing the motor part, the rotary drums, and the power supply parts; a ballast for stabilizing the electricity supplied to the lamp, the ballast being installed below the body cover part; and a ballast box in which the ballast is installed, wherein the width of the rotary drums is formed as wide as the width of the flat cables and the flat cables are wound stably and vertically on the winding cores of the rotary drums when wound by the motor, so as not to become twisted, wherein the winding core has a passage hole formed on the inside part of the winding core and an insertion hole formed on a part of the circumferential surface of the winding core and parallel to the central axis of the winding core, and the winding core is separated by the passage hole and the insertion hole for the flat cable to be inserted into the passage hole via the insertion hole and connected to a brush electrode.