LED tube lamp

• US 10,436,394 B2
• Filed: 10/25/2018
• Issued: 10/08/2019
• Est. Priority Date: 09/02/2015
• Status: Active Grant

• Current Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Original Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Inventors: Xu, Hong, Yang, Chang, Chen, Shauliang, Jiang, Wenjang, Yao, Wentao
• Primary Examiner(s): Cariaso, Alan B
• Application Number:
  US16/171,280
• Publication Number:
  US 20190063693A1
• Time in Patent Office: 348 Days
• 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 9/66 Details of globes or covers forming part of the light source
• CPC Class Codes: F21V 29/767 the planes containing the fins or blades having directions perpendicular to the light emitting axis
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 5/04 of lens shape
• 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 comprises a lamp tube, which includes a light transmissive portion, a reinforcing portion and an end cap; and an LED light assembly, which includes an LED light source and an LED light strip. The light transmissive portion is fixedly connected to the reinforcing portion. The reinforcing portion includes a plurality of bracing structures at endpoints. The bracing structure includes a combination of vertical ribs and horizontal ribs. The LED light strip abuts against the bracing structure, which guides the LED light assembly in place. The LED light assembly finds upright support by the reinforcing portion. The LED light source is thermally and electrically connected to the LED light strip. The end cap is attached to an end of the lamp tube. R15 is a ratio of an overall length of the reinforcing portion that shows itself on a circumference of a cross section of the lamp tube to an overall length of the light transmissive portion that shows itself on the circumference of the cross section of the lamp tube. R15 is a constant regardless of where the cross section finds itself on a longitudinal axis of the lamp tube. R15 is from 0.02 to 1.65.

Claims

1. An LED tube lamp, comprising:

a lamp tube, which includes a light transmissive portion, a reinforcing portion and an end cap; and

an LED light assembly, which includes an LED light source and an LED light strip, wherein;

the light transmissive portion is fixedly connected to the reinforcing portion;

the reinforcing portion includes a bracing structure at endpoint;

the bracing structure includes a combination of a vertical rib and a horizontal rib;

the LED light strip abuts against the bracing structure, which guides the LED light assembly in place;

the LED light assembly finds upright support by the reinforcing portion;

the LED light source is thermally and electrically connected to the LED light strip;

the end cap is attached to an end of the lamp tube;

R15 is a ratio of an overall length of the reinforcing portion that shows itself on a circumference of a cross section of the lamp tube to an overall length of the light transmissive portion that shows itself on the circumference of the cross section of the lamp tube;

R15 is a constant regardless of where the cross section finds itself on a longitudinal axis of the lamp tube; and

R15 is from 0.02 to 1.65.

2. The LED tube lamp in claim 1, wherein:

the reinforcing portion further includes a plurality of protruding parts spaced apart between the endpoints; and

the LED light assembly finds upright support by the plurality of protruding parts.

3. The LED tube lamp in claim 1, wherein:

R14 is a ratio of an overall area of the reinforcing portion that shows itself on an outer surface of the lamp tube to an overall area of the light transmissive portion that shows itself on the outer surface of the lamp tube; and

R14 is from 0.02 to 1.65.

4. The LED tube lamp in claim 3, wherein:

R16 is a ratio of an overall area of the reinforcing portion on the cross section of the lamp tube to an overall area of the light transmissive portion on the cross section of the lamp tube;

R16 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R16 is from 0.02 to 4.

5. The LED tube lamp in claim 4, wherein:

R17 is a ratio of an aggregate of linear distances around an edge of the reinforcing portion on the cross section of the lamp tube to an aggregate of linear distances around an edge of the light transmissive portion on the cross section of the lamp tube;

R17 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R17 is from 0.02 to 1.

6. The LED tube lamp in claim 5, wherein:

a hypothetical line segment U-L vertically bisects the cross section of the lamp tube into a left segment and a right segment;

the left segment and the right segment have an identical length horizontally;

the line segment U-L includes an upper endpoint U and a lower endpoint L, both endpoints falling on the circumference of the cross section of the lamp tube;

a length of the line segment U-L from the point U to the point L is H;

a line T′

-T′

is a lowest horizontal line on the cross section of the lamp tube above which no reinforcing potion is found;

a line B′

-B′

is a highest horizontal line on the cross section of the lamp tube below which no reinforcing portion is found;

a distance from the line T′

-T′

to the line B′

-B′

is F;

R18 is F/H;

R18 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R18 is from 0.05 to 0.4.

7. The LED tube lamp in claim 6, wherein:

a distance from the point U to the line T′

-T′

is F1;

R19 is F1/H;

R19 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R19 is from 0.6 to 0.95.

8. The LED tube lamp in claim 1, wherein:

the light transmissive portion includes an outer optical surface and an inner optical surface;

the outer optical surface and the inner optical surface have equal curvatures throughout the entire light transmissive portion;

the light transmissive portion has a greatest curvature a;

the reinforcing portion has a greatest curvature b; and

a is greater than b.

9. The LED tube lamp in claim 1, wherein:

the light transmissive portion includes a first outer optical surface and a second outer optical surface; and

the first outer optical surface has a greater curvature than the second outer optical surface.

10. The LED tube lamp in claim 1, wherein:

a hypothetical line segment U-L vertically bisects the cross section of the lamp tube into a left segment and a right segment;

the left segment and the right segment have an identical length horizontally;

the line segment U-L includes an upper endpoint U and a lower endpoint L, both endpoints falling on the circumference of the cross section of the lamp tube; and

the point U has a greater curvature than the point L.

11. The LED tube lamp in claim 10, wherein the point U has a greatest curvature throughout the entire lamp tube.

12. The LED tube lamp in claim 1, wherein:

the outer surface of the lamp tube includes a translucent outer surface and an opaque outer surface; and

either an opaque outer surface or a translucent outer surface but not both is found in a structure that forms the outer surface of the lamp tube.

13. The LED tube lamp in claim 12, wherein:

the translucent outer surface is found exclusively in the light transmissive portion and the reinforcing portion; and

the opaque outer surface is found exclusively in the end cap.

14. An LED tube lamp, comprising:

a lamp tube, which includes a light transmissive portion, a reinforcing portion and an end cap; and

an LED light assembly, which includes an LED light source and an LED light strip, wherein;

the light transmissive portion is fixedly connected to the reinforcing portion;

the reinforcing portion includes a bracing structure at endpoint;

the bracing structure includes a combination of a vertical rib and a horizontal rib;

the LED light strip abuts against the bracing structure, which guides the LED light assembly in place;

the LED light assembly finds upright support by the reinforcing portion;

the LED light source is thermally and electrically connected to the LED light strip;

the end cap is attached to an end of the lamp tube;

R16 is a ratio of an overall area of the reinforcing portion on a cross section of the lamp tube to an overall area of the light transmissive portion on the cross section of the lamp tube;

R16 is a constant regardless of where the cross section finds itself on a longitudinal axis of the lamp tube; and

R16 is from 0.02 to 4.

15. The LED tube lamp in claim 14, wherein:

the reinforcing portion further includes a plurality of protruding parts spaced apart between the endpoints; and

the LED light assembly finds upright support by the plurality of protruding parts.

16. The LED tube lamp in claim 14, wherein:

R17 is a ratio of an aggregate of linear distances around an edge of the reinforcing portion on the cross section of the lamp tube to an aggregate of linear distances around an edge of the light transmissive portion on the cross section of the lamp tube;

R17 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R17 is from 0.02 to 1.

17. The LED tube lamp in claim 16, wherein:

a hypothetical line segment U-L vertically bisects the cross section of the lamp tube into a left segment and a right segment;

the left segment and the right segment have an identical length horizontally;

the line segment U-L includes an upper endpoint U and a lower endpoint L, both endpoints falling on the circumference of the cross section of the lamp tube;

a length of the line segment U-L from the point U to the point L is H;

a line T′

-T′

is a lowest horizontal line on the cross section of the lamp tube above which no reinforcing potion is found;

a line B′

-B′

is a highest horizontal line on the cross section of the lamp tube below which no reinforcing portion is found;

a distance from the line T′

-T′

to the line B′

-B′

is F;

R18 is F/H;

R18 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R18 is from 0.05 to 0.4.

18. The LED tube lamp in claim 17, wherein:

a distance from the point U to the line T′

-T′

is F1;

R19 is F1/H;

R19 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R19 is from 0.6 to 0.95.

19. The LED tube lamp in claim 18, wherein:

the end cap is attached to the reinforcing portion with a fastener; and

the fastener is non-electrically conductive.

20. The LED tube lamp in claim 19, wherein:

the end cap is attached to the reinforcing portion with a fastener; and

the fastener is non-destructive to the end cap and the reinforcing portion.

21. The LED tube lamp in claim 14, wherein:

the light transmissive portion includes an outer optical surface and an inner optical surface;

the outer optical surface and the inner optical surface have equal curvatures throughout the entire light transmissive portion;

the light transmissive portion has a greatest curvature a;

the reinforcing portion has a greatest curvature b; and

a is greater than b.

22. The LED tube lamp in claim 14, wherein:

the light transmissive portion includes a first outer optical surface and a second outer optical surface; and

the first outer optical surface has a greater curvature than the second outer optical surface.

23. The LED tube lamp in claim 14, wherein:

a hypothetical line segment U-L vertically bisects the cross section of the lamp tube into a left segment and a right segment;

the left segment and the right segment have an identical length horizontally;

the line segment U-L includes an upper endpoint U and a lower endpoint L, both endpoints falling on the circumference of the cross section of the lamp tube; and

the point U has a greater curvature than the point L.

24. The LED tube lamp in claim 23, wherein the point U has a greatest curvature throughout the entire lamp tube.

25. The LED tube lamp in claim 24, wherein:

the outer surface of the lamp tube includes a translucent outer surface and an opaque outer surface; and

either an opaque outer surface or a translucent outer surface but not both is found in a structure that forms the outer surface of the lamp tube.

26. The LED tube lamp in claim 25, wherein:

the translucent outer surface is found exclusively in the light transmissive portion and the reinforcing portion; and

the opaque outer surface is found exclusively in the end cap.

27. An LED tube lamp, comprising:

a lamp tube, which includes a light transmissive portion, a reinforcing portion and an end cap; and

an LED light assembly, which includes an LED light source and an LED light strip, wherein;

the light transmissive portion is fixedly connected to the reinforcing portion;

the reinforcing portion includes a bracing structure at endpoint;

the bracing structure includes a combination of a vertical rib and a horizontal rib;

the LED light strip abuts against the bracing structure, which guides the LED light assembly in place;

the LED light assembly finds upright support by the reinforcing portion;

the LED light source is thermally and electrically connected to the LED light strip;

the end cap is attached to an end of the lamp tube;

a hypothetical line segment U-L vertically bisects a cross section of the lamp tube into a left segment and a right segment;

the left segment and the right segment have an identical length horizontally;

the line segment U-L includes an upper endpoint U and a lower endpoint L, both endpoints falling on a circumference of the cross section of the lamp tube;

a length of the line segment U-L from the point U to the point L is H;

a line T′

-T′

is a lowest horizontal line on the cross section of the lamp tube above which no reinforcing potion is found;

a line B′

-B′

is a highest horizontal line on the cross section of the lamp tube below which no reinforcing portion is found;

a distance from the line T′

-T′

to the line B′

-B′

is F;

R18 is F/H;

R18 is a constant regardless of where the cross section finds itself on a longitudinal axis of the lamp tube; and

R18 is from 0.05 to 0.4.

28. The LED tube lamp in claim 27, wherein:

the reinforcing portion further includes a plurality of protruding parts spaced apart between the endpoints; and

the LED light assembly finds upright support by the plurality of protruding parts.

29. The LED tube lamp in claim 27, wherein:

R16 is a ratio of an overall area of the reinforcing portion on the cross section of the lamp tube to an overall area of the light transmissive portion on the cross section of the lamp tube;

R16 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R16 is from 0.02 to 4.

30. The LED tube lamp in claim 29, wherein:

R14 is a ratio of an overall area of the reinforcing portion that shows itself on an outer surface of the lamp tube to an overall area of the light transmissive portion that shows itself on the outer surface of the lamp tube; and

R14 is from 0.02 to 1.65.

31. The LED tube lamp in claim 30, wherein:

a distance from the point U to the line T′

-T′

is F1;

R19 is F1/H;

R19 is a constant regardless of where the cross section finds itself on the longitudinal axis of the lamp tube; and

R19 is from 0.6 to 0.95.

32. The LED tube lamp in claim 31, wherein:

R15 is a ratio of an overall length of the reinforcing portion that shows itself on a circumference of a cross section of the lamp tube to an overall length of the light transmissive portion that shows itself on the circumference of the cross section of the lamp tube;

R15 is a constant regardless of where the cross section finds itself on a longitudinal axis of the lamp tube; and

R15 is from 0.02 to 1.65.

33. The LED tube lamp in claim 27, wherein:

the outer surface of the lamp tube includes a translucent outer surface and an opaque outer surface; and

either an opaque outer surface or a translucent outer surface but not both is found in a structure that forms the outer surface of the lamp tube.

34. The LED tube lamp in claim 33, wherein:

the translucent outer surface is found exclusively in the light transmissive portion and the reinforcing portion; and

the opaque outer surface is found exclusively in the end cap.

35. The LED tube lamp in claim 27, wherein:

the light transmissive portion includes an outer optical surface and an inner optical surface;

the outer optical surface and the inner optical surface have equal curvatures throughout the entire light transmissive portion;

the light transmissive portion has a greatest curvature a;

the reinforcing portion has a greatest curvature b; and

a is greater than b.

36. The LED tube lamp in claim 27, wherein:

the light transmissive portion includes a first outer optical surface and a second outer optical surface; and

the first outer optical surface has a greater curvature than the second outer optical surface.

37. The LED tube lamp in claim 27, wherein the point U has a greater curvature than the point L.

38. The LED tube lamp in claim 37, wherein the point U has a greatest curvature throughout the entire lamp tube.