LED tube lamp

• US 10,024,503 B2
• Filed: 02/24/2017
• Issued: 07/17/2018
• Est. Priority Date: 09/28/2014
• Status: Active Grant

• Current Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Original Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Inventors: Li, Li-Qin, Jiang, Tao, Yang, Chang, Wang, Bao
• Primary Examiner(s): TRAN, ANH Q
• Application Number:
  US15/441,789
• Publication Number:
  US 20170167664A1
• Time in Patent Office: 508 Days
• Field of Search: None
• CPC Class Codes: B23K 1/0016 Brazing of electronic components
• CPC Class Codes: B23K 2101/42 Printed circuits
• CPC Class Codes: B23K 3/047 electric
• CPC Class Codes: C03C 21/002 to perform ion-exchange between alkali ions C03C21/005 takes precedence
• CPC Class Codes: C03C 27/048 consisting of an adhesive specially adapted for that purpose
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21K 9/235 Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps F21K9/238 takes precedence
• 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 9/272 Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts F21K9/278 takes precedence
• CPC Class Codes: F21K 9/275 Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings F21K9/278 takes precedence
• CPC Class Codes: F21K 9/278 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21V 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 17/101 permanently, e.g. welding, gluing or riveting
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 25/02 coming into action when lighting device is disturbed, dismounted, or broken
• CPC Class Codes: F21V 25/04 breaking the electric circuit
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 3/061 : the material being glass
• CPC Class Codes: F21V 3/10 : characterised by coatings
• CPC Class Codes: F21V 7/22 : characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
• CPC Class Codes: F21V 7/28 : characterised by coatings
• CPC Class Codes: F21Y 2101/00 : Point-like light sources
• CPC Class Codes: F21Y 2103/00 : Elongate light sources, e.g. fluorescent tubes
• 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: H05B 45/37 : Converter circuits
• CPC Class Codes: H05B 45/50 : responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 6/105 : using a susceptor

Abstract

An LED tube lamp comprises a plurality of LED light sources, an end cap, a power supply disposed in the end cap, a lamp tube, and an LED light strip. The lamp tube extends in a first direction along a length of the lamp tube, and has an end attached to the end cap. LED light strip is electrically connected the LED light sources with the power supply. The LED light strip has in sequence a first wiring layer, a dielectric layer and a second wiring layer. A thickness of the second wiring layer is greater than a thickness of the first wiring layer.

Claims

1. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps;

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip electrically connected the LED light sources with the power supply, the LED light strip having in sequence a first wiring layer, a dielectric layer and a second wiring layer, and a thickness of the second wiring layer is greater than a thickness of the first wiring layer.

2. The LED tube lamp of claim 1, wherein a length of the LED light strip is greater than that of the lamp tube and the LED light strip has an end portion extending inside one of the end caps.

3. The LED tube lamp of claim 2, wherein the plurality of LED light sources is disposed on the light strip except the end region of the light strip extending inside one of the end caps.

4. The LED tube lamp of claim 3, wherein the first wiring layer is the layer on which the plurality of LED light source is disposed, and the plurality of LED light sources are electrically connected to the first wiring layer.

5. The LED tube lamp of claim 3, wherein the end portion of the light strip has a plurality of through holes to respectively electrically communicate the first wiring layer and the second wiring layer with solder.

6. The LED tube lamp of claim 5, wherein the through holes are electrically insulated to each other to avoid short circuit.

7. The LED tube lamp of claim 5, wherein the power supply is directly electrically connected with the end portion of the light strip extending inside one of the end caps.

8. The LED tube lamp of claim 1, wherein the LED light strip further comprises a protective layer.

20. The LED tube lamp of claim 8, wherein protective layer electrically isolates the anode and cathode of the LED light source.

21. The LED tube lamp of claim 8, wherein the protective layer comprises openings for exposing a conductive line electrically connecting the anode and cathode of the LED light source.

26. The LED tube lamp of claim 1, wherein the power supply is disposed on the LED light strip.

27. The LED tube lamp of claim 26, wherein the end cap comprises at least one conductive pin electrically connecting with the power supply by wire.

28. The LED tube lamp of claim 1, wherein at least a part of the power supply is disposed inside the end cap.

29. The LED tube lamp of claim 1, wherein the LED light strip is electrically connected with the power supply by wire.

30. The LED tube lamp of claim 1, wherein the second wiring layer is a piece of metal material.

31. The LED tube lamp of claim 1, further comprises a second end cap and wherein each of the end caps accommodates at least a part of the power supply.

32. The LED tube lamp of claim 31, wherein the power supply includes a plurality of components and a part of such components is in one of the end cap.

33. The LED tube lamp of claim 1, wherein the power supply comprises a plurality of electronic components and all of the electronic components are disposed inside the end cap.

34. The LED tube lamp of claim 1, wherein the power supply comprises a plurality of electronic components and at least one of the electronic components is disposed inside the end cap.

35. The LED tube lamp of claim 1, wherein the power supply comprises a plurality of electronic components and at least some of the electronic components of the power supply are disposed on the light strip.

9. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps; and

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip fixed to the inner circumferential surface of the lamp tube and having an end portion extending inside one of the end caps, and the LED light strip electrically connected the LED light sources with the power supply;

wherein the LED light strip comprises an elongated aluminum plate, and the power supply comprises a circuit board and a circuit element disposed on the circuit board, and the circuit board is mounted on the aluminum plate.

10. The LED tube lamp according to claim 9, wherein the circuit board is substantially perpendicular to the aluminum plate.

11. The LED tube lamp according to claim 9, wherein the circuit board is substantially parallel to the aluminum plate.

12. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps; and

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip fixed to the inner circumferential surface of the lamp tube and having an end portion extending inside one of the end caps, and the LED light strip electrically connected the LED light sources with the power supply;

wherein the LED light strip is a multiple layers of the wiring layers and multiple layers of the dielectric layers sequentially stacked in a staggered manner.

13. The LED tube lamp according to claim 12, wherein the stacked layers are away from the surface of the outermost wiring layer on which the plurality of LED light sources is disposed, and the outermost wiring layer is electrically connected to the power supply.

14. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps;

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip fixed to the inner circumferential surface of the lamp tube and having an end portion extending inside one of the end caps, and the LED light strip electrically connected the LED light sources with the power supply;

wherein the power supply comprises a circuit board and the LED light strip is directly soldered to the circuit board.

15. The LED tube lamp according to claim 14, wherein the LED light strip comprises a conductive layer and a dielectric layer, the dielectric layer is on a surface of the conductive layer which is away from the LED light sources, and the plurality of LED light sources are on the conductive layer and electrically connected to the power supply by the conductive layer.

16. The LED tube lamp according to claim 15, wherein the LED light strip further comprises a protective layer.

17. The LED tube lamp according to claim 16, wherein the protective layer is an ink layer.

18. The LED tube lamp according to claim 17, wherein the LED light strip has a widen part occupying a circumference area of the inner circumferential surface of the lamp tube.

19. The LED tube lamp according to claim 18, a ratio of the length of the LED light strip along the circumferential direction to the circumferential length of the lamp tube is not exceeding 0.5.

22. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps; and

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip fixed to the inner circumferential surface of the lamp tube and having an end portion extending inside one of the end caps, and the LED light strip electrically connected the LED light sources with the power supply;

wherein the LED light strip further comprises a protective layer, and the protective layer electrically isolates the anode and cathode of the LED light source.

23. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps;

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip fixed to the inner circumferential surface of the lamp tube and having an end portion extending inside one of the end caps, and the LED light strip electrically connected the LED light sources with the power supply;

wherein the LED light strip further comprises a protective layer, and the protective layer comprises openings for exposing a conductive line electrically connecting the anode and cathode of the LED light source.

24. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps;

,

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip comprising a mounting region for the plurality of LED light sources to be mounted on and a connecting region for connecting the mounting region with the power supply, the mounting region and the connecting region electrically connecting the plurality of LED light sources with the power supply,

wherein a portion of the connecting region extends inside the lamp tube, and another portion of the connecting region extends beyond the end portion of the lamp tube and into at least one of the end caps;

the LED light strip further comprises a protective layer;

wherein the protective layer electrically isolates the anode and cathode of the LED light source.

25. An LED tube lamp, comprising:

a plurality of LED light sources;

two end caps;

a power supply disposed in one of the end caps or separately in both of the end caps;

a lamp tube extending in a first direction along a length of the lamp tube, and having an end sleeving a portion of one of the end caps; and

an LED light strip comprising a mounting region for the plurality of LED light sources to be mounted on and a connecting region for connecting the mounting region with the power supply, the mounting region and the connecting region electrically connecting the plurality of LED light sources with the power supply,

wherein a portion of the connecting region extends inside the lamp tube, and another portion of the connecting region extends beyond the end portion of the lamp tube and into at least one of the end caps;

the LED light strip further comprises a protective layer;

wherein the protective layer comprises openings for exposing a conductive line electrically connecting the anode and cathode of the LED light source.