Auto lift ceiling lighting system

• US 7,153,001 B2
• Filed: 03/23/2004
• Issued: 12/26/2006
• Est. Priority Date: 05/03/2003
• Status: Expired due to Fees

• Current Assignee: Hanil Company
• Original Assignee: Hanil Company
• Inventors: Kim, Jong Yeol
• Primary Examiner(s): Alavi, Ali
• Assistant Examiner(s): Sawhney, Hargobind S.
• Application Number:
  US10/806,144
• Publication Number:
  US 20040218394A1
• Time in Patent Office: 1,008 Days
• Field of Search: 362/391, 362/404, 362/407, 362/428, 191/12.2 A
• US Class Current: 362/291
• CPC Class Codes: F21V 21/15 specially adapted for power operation, e.g. by remote control
• CPC Class Codes: F21V 21/16 using wires or cords
• CPC Class Codes: F21V 21/38 with a cable

Abstract

An auto lift ceiling lighting system in which the width of left and right rotary drums is formed as wide as the width of the flat cable and the flat cable is wound stably and vertically on the outer surface of the winding core in the left and right rotary drums so as not to become twisted. In the auto lift ceiling lighting system, the lamp can be turned on and off at any position and the flat cable supplying the electric power to the lamp does not become twisted and the balance of the lamp is maintained while the lamp ascends and descends.

Claims

1. 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.

2. The auto lift ceiling lighting system m according to claim 1, wherein the flat cable comprises the electrical wire in net form disposed in the center of the soft PVC flat and stainless wires for enduring the weight of the lamp at both sides of the electrical wire.

3. The auto lift ceiling lighting system according to claim 2, wherein the flat cable is formed flatly and evenly, so that the volume of the wound flat cable is small.

4. The auto lift ceiling lighting system according to claim 3, wherein the flat cable is formed flatly and evenly, so that the volume of the wound flat cable is small.

5. 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, 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,

a brush electrode connected with the flat cable, one end of the flat cable being connected with the lamp and the other end of the flat cable goes through an insertion hole to be inserted into a passage hole;

an insulator for preventing the electrical current from flowing from the brush electrode to the conductor of the left and right rotary drums;

a brush for supplying the electrical power to the brush electrode;

a brush holder for supporting the brush; and

a brush holder supporter for supporting the brush holder.

6. The auto lift ceiling lighting system according to claim 5, wherein one side of the brush electrode is formed in the shape of a circular plane surface and the other side is formed in the shape of the male screw, the male screw connecting the brush electrode to a terminal connected to an electrical wire of the flat cable in combination with a nut, said terminal connecting the electrical wire of the flat cable inserted into the winding core to the brush electrode.

7. 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, 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 flat cables are connected with the both ends of a lever in the ballast box, and respectively the center of the levers is connected with the center of gravity of the ballast box, so that the leverage of the lever absorbs the vibration of the lamp due to the difference of the winding speed or an error of winding the flat cables, whereby the balance of the lamp is maintained when the lamp ascends and descends.