LED tube lamp

Patent metadata

Field	Value
Publication number	US-10830397-B2
Application number	US-201916719861-A
Country	US
Kind code	B2
Filing date	Dec 18, 2019
Priority date	Dec 5, 2014
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

An LED tube lamp includes a glass 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 glass lamp tube is formed with a rough surface, and the roughness of the rough surface is higher than that of the outer surface. The glass lamp tube includes 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 each of the two end caps coupled to a respective rear end region. A length of the light strip is longer than the length of a main body region of the glass lamp tube. Each of the two end caps is coupled to a respective end of the glass lamp tube by a gel. The LED light strip is disposed on an inner surface of the glass lamp tube with a plurality of LED light sources mounted on the LED light strip.

First claim

What is claimed is:

1. An LED tube lamp, comprising:
a glass lamp tube, wherein at least a portion of an inner surface of the glass lamp tube is covered by a rough surface and the roughness of the rough surface is higher than that of the outer surface of the glass lamp tube;
two end caps, each of the two end caps coupled to a respective end of the glass lamp tube;
an LED light strip disposed on an inner surface of the glass 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 glass 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 glass lamp tube,
wherein the glass 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 each of the two end caps coupled to a respective rear end region, and further wherein a length of the light strip is longer than a length of the main body region of the glass lamp tube.

2. The LED tube lamp of claim 1 , wherein a portion of the inner surface of the glass lamp tube is covered by the rough surface and another portion of the inner surface of the glass 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 roughness of the rough surface ranges from 0.1 to 40 μm.

5. The LED tube lamp of claim 4 , wherein each of the two end caps comprises an insulating end wall, two conductive pins and at least one opening, the insulating end wall is substantially perpendicular to an axial direction of the glass lamp tube, and the two conductive pins and the opening are arranged on the insulating end wall.

6. The LED tube lamp of claim 5 , 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.

7. The LED tube lamp of claim 6 , wherein the outer diameter of each of the two rear end regions is less than the outer diameter of the main body region.

8. An LED tube lamp, comprising:
a glass lamp tube;
a diffusion film coated on an inner surface of the glass lamp tube;
an LED light strip disposed on the inner surface of the glass 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 glass lamp tube;
two end caps, each of the two end caps coupled to a respective end of the glass lamp tube; and
a power supply disposed at one end or two ends of the glass 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 glass lamp tube, and wherein a portion of the inner surface of the glass lamp tube is covered by the rough surface and a portion of the inner surface of the glass lamp tube is covered by the reflective film,
wherein the glass 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 each of the two end caps coupled to a respective rear end region, and further wherein a length of the light strip is longer than a length of the main body region of the glass lamp tube.

9. The LED tube lamp of claim 8 , wherein a portion of the inner surface of the glass lamp tube not covered by the reflective film is covered by the rough surface.

10. The LED tube lamp of claim 9 , wherein the glass lamp tube and the two end caps are secured by a gel, and the gel is disposed between an inner surface of each of the two end caps and an outer surface of each of the two rear end regions.

11. The LED tube lamp of claim 10 , wherein each of the two end caps comprises an insulating end wall, two conductive pins and at least one opening, the insulating end wall is substantially perpendicular to an axial direction of the glass lamp tube, and the two conductive pins and the opening are arranged on the insulating end wall.

12. The LED tube lamp of claim 10 , 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 an outer diameter of the main body region.

13. The LED tube lamp of claim 12 , wherein the outer diameter of each of the two rear end regions is less than the outer diameter of the main body region.

14. An LED tube lamp, comprising:
a glass lamp tube having an inner surface;
an LED light strip disposed on the inner surface of the glass 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 glass lamp tube; and
a power supply disposed at one end or two ends of the glass lamp tube, the power supply electrically connected to the plurality of LED light sources,
wherein the inner surface of the glass 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 glass lamp tube,
wherein the glass 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 each of the two end caps coupled to a respective rear end region, and further wherein a length of the light strip is longer than a length of the main body region of the glass lamp tube.

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

16. The LED tube lamp of claim 15 , wherein the glass 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 each of the two rear end regions.

17. The LED tube lamp of claim 16 , wherein each of the two end caps comprises an insulating end wall, two conductive pins and at least one opening, the insulating end wall is substantially perpendicular to an axial direction of the glass lamp tube, and the two conductive pins and the opening are arranged on the insulating end wall.

18. The LED tube lamp of claim 16 , 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 an outer diameter of the main body region.

19. The LED tube lamp of claim 18 , wherein the outer diameter of each of the two rear end regions is less than the outer diameter of the main body region.

Assignees

• Jiaxing Super Lighting Electric Appliance Co Ltd

Inventors

• Jiang Tao
• Li li-qin

Classifications

• F21V15/015

  Devices for covering joints between adjacent lighting devices; End coverings · CPC title

• F21K9/278

  Arrangement or mounting of circuit elements integrated in the light source · CPC title

• F21V23/00

  Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)} · CPC title

• F21V3/0615

  the material diffusing light, e.g. translucent glass · CPC title

• F21Y2103/10

  comprising a linear array of point-like light-generating elements · CPC title