PARALLEL-SERIES LED LIGHT STRING

• US 20080025024A1
• Filed: 07/31/2006
• Published: 01/31/2008
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: 1 Energy Solutions Incorporated
• Original Assignee: 1 Energy Solutions Incorporated
• Inventors: YU, JINGJING
• Application Number:
  US11/461,293
• Publication Number:
  US 20080025024A1
• Time in Patent Office: Days
• US Class Current: 362/252
• CPC Class Codes: F21S 4/10 with light sources attached to loose electric cables, e.g. Christmas tree lights
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/54 in a series array of LEDs

Abstract

Disclosed is a LED light string that uses parallel connected resistors that are connected across the leads of the LEDs in a light string and are disposed in the socket of the LED lamp holder. The use of parallel connected resistors across the leads of the LEDs greatly enhances the reliability of the light string.

Claims

1. A series wired light string comprising:

a first parallel connector that is connected between an input and an output;

a second parallel connector connected between said input and said output;

a light string connector that is connected to said first parallel connector at a first node near said input and that is connected to a second parallel connector at a second node near said output;

a plurality of LED modules wired in series in said light string connector, said LED modules comprising;

a LED having leads;

a lamp holder;

a bypass component disposed in said LED holder that is wired in parallel with said LED across said leads.

2. The light string of claim 1 wherein said bypass component is a discrete component.

3. The light string of claim 2 wherein said bypass component is further comprising an additional resistor that is connected in series in said light string connector.

4. The light string of claim 3 wherein said input comprises a plug and said output comprises a socket.

5. A method of manufacturing a light string comprising:

connecting a first parallel connector to an input and an output;

connecting a second parallel connector to said input and said output;

connecting a light string connector to said first parallel connector near said input;

connecting said light string connector to said second parallel connector near said output;

providing a plurality of LED modules having LED holders with resistors and LEDs disposed in said LED holders;

wiring said resistors across leads of said LEDs in parallel with said LEDs;

wiring said plurality of LED modules in series in said light string connector.

6. The method of claim 5 farther comprising:

providing said input as a plug;

providing said output as a socket.

7. The method of claim 6 further comprising:

wiring an additional resistor in series in said light string connector.

8. A parallel-series wired light string comprising:

a first parallel connector that is connected between an input and an output;

a second parallel connector connected between said input and said output;

a light string connector that is connected to said parallel connector at a first node near said input and that is connected to a second parallel connector at a second node near said output;

a first resistor that is wired in series in said light string connector;

a plurality of LED modules that are wired in series in said light string connector, said LED modules comprising;

a LED having leads and a LED forward breakdown voltage;

a LED holder;

a diode disposed in said LED holder that is wired in parallel with said LED across said leads, said diode having a diode forward breakdown voltage that is higher than said LED forward breakdown voltage.

9. The light string of claim 8 wherein said input comprises a plug and said output comprises a socket.

10. The light string of claim 9 further comprising:

a resistor that is wired in series in said light string connector.

11. A method of manufacturing a light string comprising:

connecting a first parallel connector to an input and an output;

connecting a second parallel connector to said input and said output;

connecting a light string connector to said first parallel connector near said input;

connecting said light string connector to said second parallel connector near said output;

providing a plurality of LED modules having LED holders with diodes and LEDs disposed in said LED holders;

wiring said diodes across leads of said LEDs in parallel with said LEDs;

wiring said plurality of LED modules in series in said first parallel connector.

12. The method of claim 11 further comprising:

providing said input as a plug;

providing said output as a socket;

wiring an additional resistor in series in said light string connector.