Integrally formed single piece light emitting diode light wire

• US 8,789,971 B2
• Filed: 07/15/2011
• Issued: 07/29/2014
• Est. Priority Date: 09/12/2006
• Status: Active Grant

• Current Assignee: Huizhou Light Engine Limited
• Original Assignee: Huizhou Light Engine Limited
• Inventors: Lo, Paul, Lo, Teddy Yeung Man, Li, Eddie Ping Kuen
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US13/184,079
• Publication Number:
  US 20110305011A1
• Time in Patent Office: 1,110 Days
• Field of Search: 362/249.02, 362/249.04, 362/249.05, 362/249.08, 362/249.12, 362/249.13, 362/246, 362/267, 362/429, 362/231, 362/217.02, 362/222, 362/800, 315/185.R, 315/185.S, 315/312
• US Class Current: 362/249.05
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 4/24 of ribbon or tape form, e.g. LED tapes
• CPC Class Codes: F21V 31/04 Provision of filling media
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2924/00011 Not relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01033 Arsenic [As]
• CPC Class Codes: H05B 33/04 Sealing arrangements , e.g. against humidity
• CPC Class Codes: H05B 45/30 Driver circuits
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A flexible, integrally formed single piece light emitting diode (LED) light wire that provides a smooth, uniform lighting effect from all directions of the LED light wire. The integrally formed single piece LED light wire contains a conductive base comprising first and second bus elements formed from a conductive material. The bus elements distribute power from a power source to LEDs that are mounted on the first and second bus elements so that it draws power from and adds mechanical stability to the first and second bus elements. The flexible, integrally formed single piece LED light wire is assembled so that the first and second bus elements are connected to each other prior to the LED being mounted and such integrally formed single piece LED light wire is formed without a substrate.

Claims

1. An integrally-formed light wire, comprising:

a first bus element formed from a conductive material adapted to distribute power from a power source;

a second bus element formed from a conductive material adapted to distribute power from the power source;

a third bus element formed from a conductive material adapted to distribute a control signal;

a plurality of light emitting diode (LED) modules, each of said plurality of LED modules comprising a microcontroller and at least one LED, wherein said microcontroller and said at least one LED are packaged together in each of said plurality of LED modules, each LED module being electrically coupled to the first, second, and third bus elements to draw power from the first and second bus elements and to receive a control signal from the third bus element; and

a continuous unitary encapsulant completely and continuously encapsulating said first, second, and third bus elements, and said plurality of LED modules, including said respective microcontrollers, and wherein said first, second, and third bus elements, and said plurality of LED modules, including said respective microcontrollers, are encased within the encapsulant.

2. The integrally-formed light wire of claim 1, wherein the encapsulant further comprises light scattering particles.

3. The integrally-formed light wire of claim 1, wherein a connection between each of the plurality of LED modules and one of the first and second bus elements is selected from the group consisting of solder, weld, and conductive epoxy.

4. The integrally-formed light wire of claim 3, wherein a connection between each of the plurality of LED modules and another of the first and second bus elements is selected from the group consisting of solder, weld, wire bonding, and conductive epoxy.

5. The integrally-formed light wire of claim 1, wherein each of the plurality of LED modules further comprises a plurality of LEDs, wherein the plurality of LEDs are selected from the group consisting of red, blue, green, and white LEDs.

6. The integrally-formed light wire of claim 1, each of the plurality of LED modules having first, second and third electrical contacts mounted on and electrically coupled to the first, second and third bus elements, respectively.

7. The integrally-formed light wire of claim 1, wherein each LED module has a unique address used to control the LED module.

8. The integrally-formed light wire of claim 7, wherein the address is static.

9. The integrally-formed light wire of claim 7, wherein the address is dynamic.

10. The integrally-formed light wire of claim 6, wherein each of the plurality of LED modules further comprises a fourth contact for outputting the received control signal.