Voltage regulating devices in LED lamps with multiple power sources

• US 8,729,809 B2
• Filed: 12/22/2009
• Issued: 05/20/2014
• Est. Priority Date: 09/08/2009
• Status: Active Grant

• Current Assignee: DeNovo Lighting, LLC
• Original Assignee: DeNovo Lighting, LLC
• Inventors: Kit, John, Hsu, Georgiana
• Primary Examiner(s): Owens, Douglas W
• Assistant Examiner(s): COOPER, JONATHAN G
• Application Number:
  US12/653,983
• Publication Number:
  US 20110057572A1
• Time in Patent Office: 1,610 Days
• Field of Search: 315/185.R, 315/185.S
• US Class Current: 315/185.R
• CPC Class Codes: H05B 45/375 using buck topology
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

LED driver circuits containing voltage reducing devices, voltage regulating devices, and voltage converting devices are disclosed as the main components to provide power to LEDs. The LED driver circuits are designed to work with a ballast, mains alternating current voltage, direct current voltage, and electromagnetic induction power. The voltage regulating devices can be a resistor in series with at least one zener diode or a voltage regulator both in parallel with and providing power to the LEDs. The LEDs can also be anti-parallel diode pairs consisting of one diode and one LED or two LEDs, or the LEDs can be anti-parallel diode string pairs consisting of diodes and LEDs or all LEDs. The LED driver circuits will be incorporated into LED replacement lamps, and in particular to LED lamps to replace fluorescent lamps for use with existing ballasts and other power sources where the ballast may be removed or bypassed.

Claims

1. An LED lamp device for use with multiple power sources comprising:

first and second inputs for receiving power from a first power source;

third and fourth inputs for receiving power from a second power source;

a first voltage reducing device connected between said first and second inputs for electrical communication with said first power source;

a second voltage reducing device between said second and third inputs;

a third voltage reducing device between said first and fourth inputs;

at least one voltage regulating circuit connected to said first and second inputs for providing linear current, which is not dependent on a voltage or electromagnetic induction power; and

at least two LEDs connected in series across the at least one voltage regulating circuit.

2. An LED lamp device as defined in claim 1, wherein said LED lamp device is capable of use with more than one type of said power sources, said types of power sources are a ballast, mains alternating current voltage, direct current voltage and electromagnetic induction power.

3. An LED lamp device as defined in claim 1, further including an induction power receiver, said induction power receiver for receiving said electromagnetic induction power.

4. An LED lamp device as defined in claim 1, wherein said a first voltage reducing device is a first varistor.

5. An LED lamp device as defined in claim 1, wherein said a first voltage reducing device is a first capacitor.

6. An LED lamp device as defined in claim 1, wherein said a first voltage reducing device a first inductor.

7. An LED lamp device as defined in claim 1, wherein said voltage regulating circuit includes at least one voltage converting device connected across said first voltage reducing device and at least one voltage regulating device;

wherein said at least one voltage regulating device is on a DC output side of said at least one voltage converting device.

8. An LED lamp device as defined in claim 7, wherein said at least one voltage converting device is at least one AC-to-DC converter.

9. An LED lamp device as defined in claim 7, wherein said at least one voltage converting device is at least one rectifier.

10. An LED lamp device as defined in claim 9, wherein said at least one rectifier is at least one full-wave diode bridge rectifier.

11. An LED lamp device as defined in claim 7, wherein said at least one voltage converting device is at least one DC-to-AC converter.

12. An LED lamp device as defined in claim 7, wherein said at least one voltage converting device is at least one inverter.

13. An LED lamp device defined in claim 1, wherein said at least one voltage regulating circuit is at least one resistor in series with at least one zener diode.

14. An LED lamp device as defined in claim 13, wherein said at least one zener diode is in parallel with at least two LEDs.

15. An LED lamp device defined in claim 1, wherein said at least one voltage regulating circuit is at least one resistor in series with at least one avalanche breakdown diode.

16. An LED lamp device defined in claim 15, wherein said at least one avalanche breakdown diode is in parallel with at least two LEDs.

17. An LED lamp device defined in claim 1, wherein said at least one voltage regulating circuit is at least one resistor in series with at least one transient voltage suppressor.

18. An LED lamp device as defined in claim 17, wherein said at least one transient voltage suppressor is in parallel with at least two LEDs.

19. An LED lamp device as defined in claim 1, wherein said at least one voltage regulating circuit is at least one voltage regulator.

20. An LED lamp device as defined in claim 19, wherein said at least one voltage regulator is at least one hybrid TV voltage regulator IC.

21. An LED lamp device as defined in claim 19, wherein said at least one voltage regulator is at least one DC-DC converter.

22. An LED lamp device as defined in claim 19, wherein said at least one voltage regulator is at least one buck converter.

23. An LED lamp device as defined in claim 1, wherein at least two LEDs are at least two high brightness LEDs.

24. An LED lamp device as defined in claim 1, wherein at least two LEDs are at least two surface mount LEDs.

25. An LED lamp device as defined in claim 1, wherein at least two LEDs are at least two OLEDs.

26. An LED lamp device as defined in claim 1, wherein one of said at least two LEDs is at least one pair of diodes consisting of one diode and one LED connected in an anti-parallel configuration.

27. An LED lamp device as defined in claim 26, further including a current limiting device in a series with said at least one pair of diodes consisting of one diode and one LED connected in an anti-parallel configuration.

28. An LED lamp device as defined in claim 27, wherein said current limiting device is a resistor.

29. An LED lamp device as defined in claim 1, wherein one of said at least two LEDs is at least one pair of diodes consisting of two LEDs connected in anti-parallel configuration.

30. An LED lamp device as defined in claim 29, further including a current limiting device in series with said at least one pair of diodes consisting of two LEDs connected in an anti-parallel configuration.

31. An LED lamp device as defined in claim 30, wherein said current limiting device is a resistor.

32. An LED lamp device as defined in claim 1, wherein one of said at least two LEDs is at least one pair of serial strings of diodes consisting of diodes and LEDs connected in an anti-parallel configuration.

33. An LED lamp device as defined in claim 32, further including a current limiting device in series with said at least one pair of serial strings of diodes consisting of diodes and LEDs connected in an anti-parallel configuration.

34. An LED lamp device as defined in claim 33, wherein said current limiting device is resistor.

35. An LED lamp device as defined in claim 1, wherein one of said at least two LEDs is at least one pair of serial strings of diodes consisting of LEDs connected in an anti-parallel configuration.

36. An LED lamp device as defined in claim 35, further including a current limiting device in series with said at least one pair of serial strings of diodes consisting of LEDs connected in an anti-parallel configuration.

37. An LED lamp device as defined in claim 36, wherein said current limiting device is a resistor.

38. An LED lamp device as defined in claim 1, wherein one of said at least two LEDs is at least one AC LED emitter.

39. An LED lamp device as defined in claim 38, further including a current limiting device in series with said at least one AC LED emitter.

40. An LED lamp device as defined claim 39, wherein said current limiting device is a resistor in series with said at least one AC LED emitter.

41. An LED lamp device as defined in claim 1, wherein at least one of said two LEDs is at least one packaged AC LED PCB.

42. An LED lamp device for use with multiple power sources comprising:

first and second inputs for receiving power from a first power source;

third and fourth inputs for receiving power from a second power source;

a first voltage reducing device connected between said first and second inputs for electrical communication with said first power source;

a second voltage reducing device between said second and third inputs;

a third voltage reducing device between said first and fourth inputs;

at least one voltage regulating circuit connected to said first and second inputs for providing linear current, which is not dependent on a voltage or electromagnetic induction power, the at least one voltage regulating circuit includes a pair of back to back zener diodes; and

at least two LEDs connected in series across the at least one voltage regulating circuit.

43. An LED lamp device as defined in claim 42, wherein said at least one voltage regulating circuit further includes at least one resistor in series with the back to back zener diodes.