Flexible perimeter lighting apparatus

• US 7,213,941 B2
• Filed: 04/14/2004
• Issued: 05/08/2007
• Est. Priority Date: 04/14/2004
• Status: Active Grant

• Current Assignee: Sloan Company Incorporated (Sloan), Sloanled Incorporated
• Original Assignee: Sloanled Incorporated
• Inventors: Quaal, Bruce, Sloan, Thomas C.
• Primary Examiner(s): O'Shea; Sandra
• Assistant Examiner(s): Truong; Bao Q.
• Application Number:
  US10/824,890
• Publication Number:
  US 20050231947A1
• Time in Patent Office: 1,119 Days
• Field of Search: 362/235, 362/249, 362/227, 362/230, 362/231, 362/248, 362/240, 362/244, 362/246, 362/800, 362/20, 362/251, 362/646, 362/648, 362/391
• US Class Current: 362/246
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 21/088 Clips; Clamps
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 2013/1895 Imitating a neon tube
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes

Abstract

An elongated flexible lighting system according to the present invention includes an array of light sources that are illuminated by electric power. It further includes an elongated translucent extrusion of flexible material. The array of light sources is integral to the extrusion with said extrusion transmitting and dispersing the light from the array such that the lighting system gives the appearance that the array of light sources is a continuous light source. The elongated lighting system can be used for many different applications including, but not limited to, the lighting of structural features and illumination of sign features.

Claims

1. An elongated flexible lighting system, comprising:

a plurality of surface mount light emitting diodes (LEDs) emitting light in response to electrical power;

a flexible printed circuit material, said LEDs mounted on said printed circuit material, said printed circuit material having redundant conductive traces to electrically interconnect said LEDs, the other of said conductive traces conducting power to said LEDs if one of said traces fails; and

an elongated translucent extrusion of flexible material, said printed circuit material and LEDs integral to said extrusion and transmitting at least some light through at least some of said extrusion, said extrusion dispersing the light from said array giving the appearance that said array of light sources is a continuous light source.

2. The lighting system of claim 1, wherein said plurality of LEDs comprises a linear array of LEDs.

3. The lighting system of claim 1, further comprising a mounting means.

4. The lighting system of claim 1, further comprising a mounting bracket.

5. The lighting system of claim 1, wherein said extrusion further comprises one or more longitudinal grooves, and a mounting bracket having one or more lips, each said lip arranged to mate with a respective one of said grooves to hold said extrusion within said bracket.

6. The lighting system of claim 1, further comprising means for conducting said electrical power from said lighting system to another device.

7. The lighting system of claim 1, wherein said flexible printed circuit material is vertically mounted integral to said extrusion, said LEDs emitting out the top of said extrusion.

8. The lighting system of claim 7, further comprising an opaque strip in proximity to said flexible printed circuit material, said light sources arranged between said strip and printed circuit material and said strip and printed circuit material blocking light from emitting out the sides of said extrusion.

9. The lighting system of claim 1, wherein said extrusion comprises silicone.

10. The lighting system of claim 1, wherein said extrusion further comprises a longitudinal cavity, light from said plurality of LEDs passing through and dispersed by said cavity.

11. The lighting system of claim 1, wherein some of said plurality of LEDs can be separated from the others of said plurality of LEDs, the remaining of said plurality of LEDs emitting light.

12. The lighting system of claim 1, wherein said plurality of LEDs comprises a plurality of parallel connected sub-arrays of LEDs, said electric power coupled across each of said plurality sub-arrays.

13. The lighting system of claim 12, further comprising a plurality of voltage regulators each of which is at a respective one of said parallel connected sub-arrays, each of said voltage regulators providing substantially similar voltage to its respective sub-array.

14. The lighting system of claim 12, wherein said plurality of LEDs is cuttable between adjacent ones of said plurality of parallel connected sub-arrays.

15. The lighting system of claim 1, wherein said redundant traces lead to each of the mounting locations for said LEDs from a different angle to reduce the danger that both traces would fail in response to bending of said printed circuit material.

16. The lighting system of claim 1, wherein said redundant traces lead to each of the mounting locations for said LEDs a 90°

angle to the other to reduce the danger that both traces would fail in response to bending of said printed circuit material.

17. The lighting system of claim 1, wherein said printed circuit material is cuttable to shorten said printed circuit material while allowing the remaining of said plurality of LEDs on said printed circuit material to emit light, said extrusion being cuttable to match the length of said shortened printed circuit material.