LIGHT EMITTING DIODE ASSEMBLY

• US 20100102729A1
• Filed: 10/08/2009
• Published: 04/29/2010
• Est. Priority Date: 10/10/2008
• Status: Abandoned Application

• Current Assignee: Rethink Environmental
• Original Assignee: Rethink Environmental
• Inventors: Katzir, Wesley, Katzir, Omer
• Application Number:
  US12/576,064
• Publication Number:
  US 20100102729A1
• Time in Patent Office: Days
• US Class Current: 315/113
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21K 9/278 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 23/0471 the sensor detecting the proximity, the presence or the movement of an object or a person
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/3578 Emulating the electrical or functional characteristics of discharge lamps
• CPC Class Codes: H05B 45/56 involving measures to prevent abnormal temperature of the LEDs
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
• CPC Class Codes: Y10T 29/49718 Repairing

Abstract

A lighting assembly using light emitting diodes provides low leakage current that does not require an external ballast. The lighting assembly can replace a fluorescent tube light while providing a more comfortable and steady light source, consuming less power and with enhanced longevity. The lighting assembly includes a tube, a light emitting diode panel disposed within the tube, a circuit board disposed within the tube, and insulation disposed between the light emitting diode panel and the circuit board. At least a portion of the tube is translucent. The light emitting diode panel includes light emitting diodes, and the circuit board includes a driving circuit for driving the light emitting diodes.

Claims

1. A lighting assembly, comprising:

a tube, at least a portion of the tube being translucent;

a light emitting diode panel disposed within the tube, the light emitting diode panel comprising a plurality of light emitting diodes;

a circuit board disposed within the tube, the circuit board including a driving circuit for driving the plurality of light emitting diodes of the light emitting diode panel; and

insulation disposed between the light emitting diode panel and the circuit board.

2. The lighting assembly of claim 1 further comprising:

a first end cap disposed on a first end of the tube; and

a second end cap disposed on a second end of the tube.

3. The lighting assembly of claim 2, wherein the first end cap includes two conductors electrically connected to the driving circuit.

4. The lighting assembly of claim 3, wherein the two conductors of the first end cap are electrically connected to the driving circuit by power leads.

5. The lighting assembly of claim 3, wherein the driving circuit is electrically isolated from the second end cap.

6. The lighting assembly of claim 2, wherein the driving circuit is electrically connected to a single end cap from the group consisting of:

the first end cap and the second end cap.

7. The lighting assembly of claim 1, wherein the tube includes a reflective coating disposed on a portion of the tube.

8. The lighting assembly of claim 1, further comprising a thermal sensor.

9. The lighting assembly of claim 8, wherein the driving circuit provides a thermal control function using the thermal sensor.

10. The lighting assembly of claim 9, wherein the driving circuit is configured to reduce the brightness of at least some of the plurality of light emitting diodes when a temperature measured using the thermal sensor is greater than a predetermined value.

11. The lighting assembly of claim 10, wherein the predetermine value is selected so as to extend the lifetime of at least some of the plurality of light emitting diodes.

12. The lighting assembly of claim 1, further comprising a motion sensor.

13. The lighting assembly of claim 12, wherein the driver circuit is configured to enter an active state upon detection of motion using the motion sensor.

14. The lighting assembly of claim 13, wherein the driver circuit is further configured to enter an inactive state after a predetermined period of time after detection of motion using the motion sensor.

15. The lighting assembly of claim 14, wherein the driver circuit reduces the brightness of at least some of the plurality of light emitting diodes in the inactive state.

16. The lighting assembly of claim 14, wherein the driver circuit turns off at least some of the plurality of light emitting diodes in the inactive state.

17. The lighting assembly of claim 1, further comprising a remote control sensor.

18. The lighting assembly of claim 17, wherein the driver circuit, in response to a signal received using the remote control sensor, is operable to perform one or more functions from the group consisting of:

disable at least one of the plurality of light emitting diodes; and

change the brightness of at least one of the plurality of light emitting diodes.

19. The lighting assembly of claim 1 further comprising a photosensor.

20. The lighting assembly of claim 19, wherein the driver circuit, in response to a signal received using the photosensor, is operable to perform one or more functions from the group consisting of:

disable at least one of the plurality of light emitting diodes; and

change the brightness of at least one of the plurality of light emitting diodes.

21. The lighting assembly of claim 1, wherein the plurality of light emitting diodes includes a first set of light emitting diodes having a first color temperature and a second set of light emitting diodes having a second color temperature.

22. The lighting assembly of claim 21, wherein the first color temperature is approximately 3300 Kelvin and the second color temperature is approximately 5800 Kelvin.

23. The lighting assembly of claim 21, wherein the driver circuit is operable to vary the color temperature of the light emitting diode panel by controlling the brightness of the first set of light emitting diodes relative to the brightness of the second set of light emitting diodes.

24. The lighting assembly of claim 23 further comprising a photosensor, wherein the driver circuit is operable to vary the color temperature of the light emitting diode panel in response to a signal received from the photosensor.

25. The lighting assembly of claim 1, wherein at least a portion of the tube comprises metal.

26. The lighting assembly of claim 1, further comprising a heat sink.

27. The lighting assembly of claim 26, wherein the heat sink is attached to the tube.

28. The lighting assembly of claim 1, wherein the light emitting diode panel includes one or more curved surfaces.

29. The lighting assembly of claim 1, further comprising a second light emitting diode panel, the light emitting diode panel and the second light emitting diode panel primarily emitting light in different directions.

30. The lighting assembly of claim 1, further comprising one or more reflectors.

31. The lighting assembly of claim 1, wherein the lighting assembly is configured to be received by a fluorescent light socket.

32. The lighting assembly of claim 2, wherein the lighting assembly includes an active end cap and an inactive end cap, the active end cap being electrically connected to the driver circuit, and the inactive end cap being electrically isolated from the driver circuit, and wherein the inactive end cap includes a protrusion so as to prevent improper installation of the lighting assembly.

33. The lighting assembly of claim 1, wherein the plurality of light emitting diodes include at least one light emitting diode that emits light of a first color temperature, and at least one light emitting diode that emits light of a second color temperature.

34. The lighting assembly of claim 31, wherein the lighting assembly is configured to be received by one of the group consisting of:

size T4;

size T5;

size T8;

size T10;

size T12;

size T14.

35. A method for configuring a fluorescent light fixture for use with a replacement lighting assembly using light emitting diodes, the method comprising:

removing a ballast from a fluorescent light fixture; and

removing an external driver from the fluorescent light fixture.

36. The method of claim 35, further comprising rewiring the fluorescent light fixture to power the replacement lighting assembly using light emitting diodes.

37. The method of claim 36, wherein rewiring the fluorescent light fixture to power the replacement lighting assembly using light emitting diodes includes wiring a positive voltage line to a first pin of lamp pin base and wiring a negative voltage line to a second pin of the lamp pin base.

38. The method of claim 37, wherein rewiring the fluorescent light fixture to power the replacement lighting assembly using light emitting diodes includes disconnecting power from a lamp pin base.