LED tube lamp

• US 10,514,134 B2
• Filed: 08/01/2018
• Issued: 12/24/2019
• Est. Priority Date: 12/05/2014
• Status: Active Grant

• Current Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Original Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Inventors: Jiang, Tao, Li, Li-Qin
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US16/051,826
• Publication Number:
  US 20180335200A1
• Time in Patent Office: 510 Days
• Field of Search: 362222
• 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 19/009 the support means engaging the vessel of the source
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• 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 23/023 Power supplies in a casing F21V23/003 takes precedence
• CPC Class Codes: F21V 25/04 breaking the electric circuit
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 3/061 the material being glass
• CPC Class Codes: F21V 3/0615 the material diffusing light, e.g. translucent glass
• CPC Class Codes: F21V 3/10 characterised by coatings
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• 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]

Abstract

An LED tube lamp includes a lamp tube, two end caps, an LED light strip, a power supply, and a reflective film. At least a portion of an inner surface of the lamp tube is formed with a rough surface, and the roughness of the rough surface is higher than that of the outer surface. Each of the two end caps is coupled to a respective end of the lamp tube by a gel. The LED light strip is disposed on an inner surface of the lamp tube with a plurality of LED light sources mounted on the LED light strip. The power supply is disposed at one or two of the end caps. The power supply is electrically connected to the plurality of LED light sources. The reflective film is disposed on the inner surface of the lamp tube.

Claims

1. An LED tube lamp, comprising:

a lamp tube, wherein at least a portion of an inner surface of the lamp tube is formed with a rough surface and the roughness of the rough surface is higher than that of the outer surface;

two end caps, each of the two end caps coupled to a respective end of the lamp tube;

an LED light strip disposed on an inner surface of the lamp tube with a plurality of LED light sources mounted on the LED light strip;

a power supply disposed at one end or two ends of the lamp tube, the power supply electrically connected to the plurality of LED light sources; and

a reflective film disposed on a portion of the inner surface of the lamp tube.

2. The LED tube lamp of claim 1, wherein a portion of the inner surface of the lamp tube is covered by the rough surface and another portion of the inner surface of the lamp tube is covered by the reflective film.

3. The LED tube lamp of claim 2, wherein a portion of the inner surface which is not covered by the reflective film is covered by the rough surface.

4. The LED tube lamp of claim 3, wherein the lamp tube comprises a diffusion film attached to a surface of the lamp tube.

5. The LED tube lamp of claim 4, wherein the diffusion film is coated on the inner surface of the lamp tube.

6. The LED tube lamp of claim 5, wherein the roughness of the rough surface ranges from 0.1 to 40 μ

m.

7. The LED tube lamp of claim 5, wherein each of the two end caps comprises at least one conductive pin, at least one of the conductive pins of the two end caps is coupled to the power supply.

8. The LED tube lamp of claim 7, wherein each of the two end caps comprises an insulating end surface, the conductive pin is formed on each of the insulating end surface.

9. The LED tube lamp of claim 8, wherein the insulating end surface of each of the two end caps comprises at least one opening.

10. The LED tube lamp of claim 9, wherein each of the two end caps further comprises an outer circumferential surface around and connected with the insulating end surface, and the outer circumferential surface of each of the two end caps comprises at least one opening.

11. The LED tube lamp of claim 9, wherein the light strip comprises a metal layer, the plurality of LED light sources are electrically connected to the metal layer.

12. The LED tube lamp of claim 11, wherein the lamp tube comprises a main body region and two rear end regions, each of the two rear end regions coupled to a respective end of the main body region, and wherein a length of the light strip is longer than the length of a main body region of the lamp tube.

13. The LED tube lamp of claim 12, wherein each of the two end caps sleeves with a respective rear end region, and wherein an outer diameter of each of the end cap is substantially the same as the outer diameter of the main body region.

14. An LED tube lamp, comprising:

a lamp tube;

a diffusion film coated on an inner surface of the lamp tube;

an LED light strip disposed on the inner surface of the lamp tube with a plurality of LED light sources mounted on the LED light strip;

a reflective film disposed on the inner surface of the lamp tube;

two end caps, each of the two end caps coupled to a respective end of the lamp tube; and

a power supply disposed at one end or two ends of the lamp tube, the power supply electrically connected to the plurality of LED light sources,

wherein the diffusion film has a rough surface, the roughness of the rough surface is higher than that of an outer surface of the lamp tube, and further wherein a portion of the inner surface of the lamp tube is covered by the rough surface and another portion of the inner surface of the lamp tube is covered by the reflective film.

15. The LED tube lamp of claim 14, wherein a portion of the inner surface of the lamp tube not covered by the reflective film is covered by the rough surface.

16. The LED tube lamp of claim 15, wherein the lamp tube and the two end caps are secured by a gel, wherein the gel is disposed between an inner surface of each of the two end caps and an outer surface of the lamp tube.

17. The LED tube lamp of claim 16, wherein each of the two end caps comprises at least one conductive pin, at least one of the conductive pins of the two end caps is coupled to the power supply.

18. The LED tube lamp of claim 17, wherein each of the two end caps comprises an insulating end surface, the conductive pin is formed on each of the insulating end surface.

19. The LED tube lamp of claim 18, wherein the insulating end surface of each of the two end caps comprises at least one opening.

20. The LED tube lamp of claim 19, wherein the light strip comprises a metal layer, the plurality of LED light sources are electrically connected to the metal layer.

21. The LED tube lamp of claim 20, wherein the lamp tube comprises a main body region and two rear end regions, each of the two rear end regions coupled to a respective end of the main body region, and wherein a length of the light strip is longer than the length of a main body region of the lamp tube.

22. The LED tube lamp of claim 21, wherein each of the two end caps sleeves with a respective rear end region, and wherein an outer diameter of each of the end cap is substantially the same as the outer diameter of the main body region.

23. An LED tube lamp, comprising:

a lamp tube having an inner surface;

an LED light strip disposed on the inner surface of the lamp tube with a plurality of LED light sources mounted on the LED light strip;

two end caps, each of the two end caps coupled to a respective end of the lamp tube; and

a power supply disposed at one end or two ends of the lamp tube, the power supply electrically connected to the plurality of LED light sources,

wherein the inner surface of the lamp tube is covered by a reflective layer and a rough layer, the roughness of the rough layer is higher than that of an outer surface of the lamp tube.

24. The LED tube lamp of claim 23, wherein a portion of the inner surface which is not covered by the reflective layer is covered by the rough layer.

25. The LED tube lamp of claim 24, wherein the portion of the inner surface which is covered by the reflective layer is not covered by the rough layer.

26. The LED tube lamp of claim 24, wherein the lamp tube and the two end caps are secured by a gel, wherein the gel is disposed between an inner surface of each of the two end caps and an outer surface of the lamp tube.

27. The LED tube lamp of claim 26, wherein each of the two end caps comprises at least one conductive pin, at least one of the conductive pins of the two end caps is coupled to the power supply.

28. The LED tube lamp of claim 27, wherein each of the two end caps comprises an insulating end surface, the conductive pin is formed on each of the insulating end surface.

29. The LED tube lamp of claim 28, wherein the insulating end surface of each of the two end caps comprises at least one opening.

30. The LED tube lamp of claim 29, wherein the light strip comprises a metal layer, the plurality of LED light sources are electrically connected to the metal layer.

31. The LED tube lamp of claim 30, wherein the lamp tube comprises a main body region and two rear end regions, each of the two rear end regions coupled to a respective end of the main body region, and wherein a length of the light strip is longer than the length of a main body region of the lamp tube.

32. The LED tube lamp of claim 31, wherein each of the two end caps sleeves with a respective rear end region, and wherein an outer diameter of each of the end cap is substantially the same as the outer diameter of the main body region.