LED tube lamp

• US 10,190,749 B2
• Filed: 08/04/2015
• Issued: 01/29/2019
• Est. Priority Date: 04/02/2015
• Status: Active Grant

• Current Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Original Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Inventors: Jiang, Tao
• Primary Examiner(s): Tumebo, Tsion
• Application Number:
  US14/818,194
• Publication Number:
  US 20160290598A1
• Time in Patent Office: 1,274 Days
• Field of Search: 362223
• 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 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 3/049 Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21V 7/28 characterised by coatings
• 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 having LED light sources, a lamp tube, end cap, power supply, a reflective film layer and an LED light bar is disclosed. The LED light bar is a bendable circuit sheet. One end of the lamp tube is attached to the end cap; a power supply disposed in end cap and the LED light bar is disposed inside lamp tube. The end cap includes an electrically insulating tubular part, sleeved with the end of the lamp tube and a magnetic metal object disposed between an inner circumferential surface of the electrically insulating tubular part and the end of lamp tube. The reflective film layer is disposed on inner circumferential surface of lamp tube, and occupying a portion of inner circumferential surface of lamp tube along circumferential direction thereof. LED light sources are disposed above or adjacently to one side of reflective film layer.

Claims

1. An LED tube lamp, comprising:

a lamp tube, having an LED light bar disposed inside the lamp tube with a plurality of LED light sources on the LED light bar;

two end caps respectively at two opposite ends of the lamp tube; and

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

wherein each of the end caps comprises;

an electrically insulating tube;

a magnetic metal member, disposed on an inner circumferential surface of the electrically insulating tube;

a hot melt adhesive disposed on an inner circumferential surface of the magnetic metal member; and

two conductive pins disposed on the electrically insulating tube,

wherein the hot melt adhesive comprises phenolic resin 2127, shellac, rosin, calcium carbonate powder, and zinc oxide.

2. The LED tube lamp according to claim 1, wherein for each end cap, the hot melt adhesive is heated to be expanded and flowing during a process of having the lamp tube and the end cap adhered, which hot melt adhesive is later cooled and solidified.

3. The LED tube lamp according to claim 1, further comprising, for each end cap:

protrusions and recesses formed on an inner surface of the electrically insulating tube, wherein the hot melt adhesive fills in spaces formed by the recesses.

4. The LED tube lamp according to claim 1, wherein the magnetic metal member is for melting the hot melt adhesive.

5. The LED tube lamp according to claim 1, wherein the magnetic metal member is positioned to melt the hot melt adhesive by physically contacting and heating the hot melt adhesive.

6. The LED tube lamp according to claim 1, wherein the hot melt adhesive is formed from a welding mud powder.

7. The LED tube lamp according to claim 1, wherein, for each end cap, the hot melt adhesive is disposed between the inner circumferential surface of the magnetic metal member and an outer circumferential surface of the lamp tube.

8. The LED tube lamp according to claim 1, wherein the hot melt adhesive further comprises ethanol.

9. An LED tube lamp, comprising:

a lamp tube, having an LED light bar disposed inside the lamp tube with a plurality of LED light sources on the LED light bar;

two end caps respectively at two opposite ends of the lamp tube; and

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

wherein each of the end caps comprises;

an electrically insulating tube;

a magnetic metal member, disposed on an inner circumferential surface of the electrically insulating tube;

a hot melt adhesive disposed on an inner circumferential surface of the magnetic metal member; and

two conductive pins disposed on the electrically insulating tube,

wherein the hot melt adhesive is heated to be expanded and flowing during a process of having the lamp tube and the end cap adhered, which hot melt adhesive is later cooled and solidified.

10. The LED tube lamp according to claim 9, wherein the hot melt adhesive comprises phenolic resin 2127, shellac, rosin, calcium carbonate powder, and zinc oxide.

11. The LED tube lamp according to claim 9, further comprising, for each end cap:

protrusions and recesses formed on an inner surface of the electrically insulating tube, wherein the hot melt adhesive fills in spaces formed by the recesses.

12. The LED tube lamp according to claim 9, wherein the magnetic metal member is for melting the hot melt adhesive.

13. The LED tube lamp according to claim 9, wherein the magnetic metal member is positioned to melt the hot melt adhesive by physically contacting and heating the hot melt adhesive.

14. The LED tube lamp according to claim 9, wherein the hot melt adhesive is formed from a welding mud powder.

15. The LED tube lamp according to claim 9, wherein, for each end cap, the hot melt adhesive is disposed between the inner circumferential surface of the magnetic metal member and an outer circumferential surface of the lamp tube.

16. The LED tube lamp according to claim 10, wherein the hot melt adhesive further comprises ethanol.

17. An LED tube lamp, comprising:

a lamp tube, having an LED light bar disposed inside the lamp tube with a plurality of LED light sources on the LED light bar;

two end caps respectively at two opposite ends of the lamp tube; and

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

wherein each of the end caps comprises;

an electrically insulating tube;

a magnetic metal member, disposed on an inner circumferential surface of the electrically insulating tube; and

a hot melt adhesive disposed on an inner circumferential surface of the magnetic metal member and on an outer circumferential surface of the lamp tube,

wherein the hot melt adhesive is formed from a welding mud powder.

18. The LED tube lamp according to claim 17, wherein for each end cap, the hot melt adhesive is heated to be expanded and flowing during a process of having the lamp tube and the end cap adhered, which hot melt adhesive is later cooled and solidified.

19. The LED tube lamp according to claim 17, further comprising, for each end cap:

protrusions and recesses formed on an inner surface of the electrically insulating tube, wherein the hot melt adhesive fills in spaces formed by the recesses.

20. The LED tube lamp according to claim 17, wherein the magnetic metal member is for melting the hot melt adhesive.

21. The LED tube lamp according to claim 17, wherein the magnetic metal member is positioned to melt the hot melt adhesive by physically contacting and heating the hot melt adhesive.

22. The LED tube lamp according to claim 17, wherein the hot melt adhesive comprises phenolic resin 2127, shellac, rosin, calcium carbonate powder, and zinc oxide.

23. The LED tube lamp according to claim 22, wherein the hot melt adhesive further comprises ethanol.