High frequency multi-voltage and multi-brightness LED lighting devices and systems and methods of using same

• US 10,178,715 B2
• Filed: 12/28/2010
• Issued: 01/08/2019
• Est. Priority Date: 02/25/2004
• Status: Active Grant

• Current Assignee: Lynk Labs, Inc.
• Original Assignee: Lynk Labs, Inc.
• Inventors: Miskin, Michael, Kottritsch, Robert L., Andersen, James N.
• Primary Examiner(s): Le, Tung X
• Assistant Examiner(s): Luong, Henry
• Application Number:
  US13/519,487
• Publication Number:
  US 20120293083A1
• Time in Patent Office: 2,933 Days
• Field of Search: 315192, 315185 R, 315186, 315193, 315200 R, 315217
• CPC Class Codes: H05B 45/39 Circuits containing inverter bridges

Abstract

A system and method transforming AC voltage to a high-frequency AC voltage and providing the high-frequency AC voltage to an AC LED circuit or rectifying the high-frequency circuit to a DC voltage and providing the DC voltage to a DC LED circuit.

Claims

1. A lighting system powered by an AC voltage source, the lighting system comprising:

a. a high-frequency AC driver configured to receive at least two different AC forward voltages and having an AC voltage input and an AC voltage output, the AC voltage input being one of the at least two different AC forward voltages, the AC voltage output being a relatively constant voltage at a relatively constant frequency, wherein the relatively constant frequency is substantially higher than a frequency of the AC voltage input;

b. at least two LED circuits each of which have at least two LEDs connected in series, electrically connected to the AC voltage output of the high-frequency AC driver; and

c. the at least two LED circuits are connected to the AC voltage output of the high-frequency AC driver in either a series relationship or a parallel relationship.

2. The lighting system of claim 1 wherein the high-frequency AC driver provides a DC voltage to the at least two LED circuits and further comprising:

a bridge rectifier.

3. The lighting system of claim 1 wherein each of the at least two LED circuits have substantially identical forward operating voltages.

4. The lighting system of claim 1 further comprising a switch configured between the high-frequency AC driver and the at least two LED circuits, wherein the switch controls which of the at least two LED circuits receives the AC voltage output from the high-frequency AC driver.

5. The lighting system of claim 4 wherein the switch is a two-way switch.

6. The lighting system of claim 4 wherein the switch is a three-way switch.

7. The lighting system of claim 1 wherein the high-frequency AC driver and the at least two LED circuits are packaged separately.

8. The lighting system of claim 1 wherein the high-frequency AC driver and the at least two LED circuits are packaged together.

9. The lighting system of claim 2 wherein the bridge rectifier is formed using diodes.

10. The lighting system of claim 2 wherein the bridge rectifier is formed using LEDs.

11. The lighting system of claim 2 wherein the bridge rectifier is formed using a combination of diodes and LEDs.

12. The lighting system of claim 1, wherein each of the at least two LED circuits has a forward operating voltage substantially matching a mains voltage.

13. The lighting system of claim 12, wherein the AC voltage input is the mains voltage.

14. The lighting system of claim 1, wherein each of the at least LED circuits has a forward operating voltage substantially matching the AC voltage output of the high-frequency AC driver.

15. The lighting system of claim 1, wherein a forward operating voltage of the at least two LED circuits connected in series substantially matches the AC voltage output of the high-frequency AC driver.

16. The lighting system of claim 15, wherein the at least two LED circuits and the high-frequency AC driver are packaged separately.

17. The lighting system of claim 16, wherein each of the at least two LED circuits has a forward operating voltage substantially matching a mains voltage.

18. The lighting system of claim 1, wherein each of the at least two LED circuits includes a bridge rectifier.

19. The lighting system of claim 1, wherein a switch is connected between the AC voltage output of the high-frequency AC driver and the at least two LED circuits, the switch selectively controlling which of the at least two LED circuits receives the AC voltage output from the high-frequency AC driver.

20. The lighting system of claim 1, wherein the at least two different AC forward voltages are 120V and 277V and wherein the high-frequency AC driver adapts.

21. The lighting system of claim 1, wherein the one of the at least two different AC forward voltages received by the driver is from a mains power source.

22. A method of providing light, the method comprising:

a. receiving an AC voltage input at a first frequency at a driver, the driver being configured to receive at least two different AC forward voltages with the AC voltage input being one of the at least two different AC forward voltages;

b. transforming the AC voltage input at the first frequency to a voltage output at a second frequency using the driver, wherein the second frequency is higher than the first frequency and wherein the second frequency and a voltage of the voltage output are relatively constant when the driver is connected to at least two LED circuits; and

c. supplying the voltage output at the second frequency to the at least two LED circuits.

23. The method of claim 22 further comprising:

transforming the AC voltage input at the first frequency to the voltage output at the second frequency using the driver, the driver being a high-frequency AC driver.

24. The method of claim 23 further comprising:

providing the voltage output at a substantially identical value to the AC voltage input.

25. The method of claim 23 further comprising:

providing the voltage output as a second AC voltage less than the AC voltage input.

26. The method of claim 23 further comprising:

providing the voltage output as a second AC voltage greater than the AC voltage input.

27. The method of claim 23 wherein each of the at least two LED circuits includes a bridge rectifier.

28. The method of claim 22 further comprising:

selecting how many of the at least two LED circuits receive the voltage output using a switch.

29. The method of claim 28, wherein the switch is a two-way switch or a three-way switch.