LED tube lamp

Patent metadata

Field	Value
Publication number	US-9845923-B2
Application number	US-201615298955-A
Country	US
Kind code	B2
Filing date	Oct 20, 2016
Priority date	Sep 28, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

An LED tube lamp includes a lamp tube, two end caps, and an LED light strip. The two end caps are respectively at two opposite ends of the lamp tube. The LED light strip is in the lamp tube and is provided with one or more LED light sources mounted thereon. Each of the end caps includes an electrically insulating tube, two conductive pins, and two or more heat-dissipating openings. The two conductive pins are disposed on the electrically insulating tube. The two heat-dissipating openings are formed on the electrically insulating tube and are symmetric to each other with respect to a vertical central plane passing through the middle of a line connecting the two conductive pins.

First claim

What is claimed is:

1. An LED tube lamp, comprising:
a lamp tube;
two end caps respectively at two opposite ends of the lamp tube;
a power supply in one or separately both of the end caps; and
an LED light strip in the lamp tube, the LED light strip being provided with a plurality of LED light sources mounted thereon; and
a hot melt adhesive disposed between the two end caps and the lamp tube,
wherein each of the end caps comprises:
an electrically insulating tube;
a thermal conductive member extending from the electrically insulating tube towards the corresponding end of the lamp tube;
two conductive pins disposed on the electrically insulating tube; and
at least two heat-dissipating openings formed on the electrically insulating tube symmetric to each other with respect to a vertical central plane passing through the middle of a line connecting the two conductive pins,
wherein an accommodation space is formed between an inner surface of the thermal conductive member and an outer surface of the lamp tube, wherein the hot melt adhesive is in the accommodation space at a location where a hypothetical plane being perpendicular to an axial direction of the lamp tube passes through the thermal conductive member, the hot melt adhesive, and the outer surface of the lamp tube.

2. The LED tube lamp according to claim 1 , wherein the at least two heat-dissipating openings are on a surface of the electrically insulating tube on which the two conductive pins are disposed.

3. The LED tube lamp according to claim 1 , wherein the at least two heat-dissipating openings are separately in a shape of an arc.

4. The LED tube lamp according to claim 3 , wherein the at least two heat-dissipating openings are in a shape of arcs with different sizes.

5. The LED tube lamp according to claim 4 , wherein the sizes of the arcs of the at least two heat-dissipating openings gradually vary.

6. The LED tube lamp according to claim 1 , wherein the number of the at least two heat-dissipating openings is three, and the three heat-dissipating openings are in a shape of three arcs with gradually varying sizes.

7. The LED tube lamp according to claim 1 , wherein the LED light sources are electrically connected to the power supply via the LED light strip.

8. An LED tube lamp, comprising:
a lamp tube;
two end caps respectively at two opposite ends of the lamp tube;
a power supply in one or separately both of the end caps; and
an LED light strip in the lamp tube, the LED light strip being provided with a plurality of LED light sources mounted thereon; and
a hot melt adhesive disposed between the two end caps and the lamp tube,
wherein each of the end caps comprises:
an electrically insulating tube;
a thermal conductive member extending from the electrically insulating tube towards the corresponding end of the lamp tube;
two conductive pins disposed on the electrically insulating tube; and
a plurality of openings formed thereon, wherein the plurality of openings dissipating heat resulted from the power supply are divided into two sets, and the two sets of the plurality of openings are symmetric to each other with respect to a virtual central axis of the end cap,
wherein an accommodation space is formed between an inner surface of the thermal conductive member and an outer surface of the lamp tube, wherein the hot melt adhesive is in the accommodation space at a location where a hypothetical plane being perpendicular to an axial direction of the lamp tube passes through the thermal conductive member, the hot melt adhesive, and the outer surface of the lamp tube.

9. The LED tube lamp according to claim 8 , wherein the plurality of openings dissipate heat resulted from the power supply.

10. The LED tube lamp according to claim 8 , wherein the hot melt adhesive is heated to be expansive and flowing during a process of having the lamp tube and the end cap adhered, and the plurality of openings dissipate heat to have the hot melt adhesive cooled and solidified.

11. The LED tube lamp according to claim 8 , wherein the plurality of openings are separately in a shape of an arc.

12. The LED tube lamp according to claim 11 , wherein the number of the plurality of openings is three, and the three openings are in a shape of three arcs with gradually varying sizes.

13. The LED tube lamp according to claim 8 , wherein the plurality of openings are separately in a shape of a circle.

14. The LED tube lamp according to claim 13 , wherein the number of the plurality of openings is three, and the three openings are arranged in a shape of an arc.

15. The LED tube lamp according to claim 8 , wherein the LED light sources are electrically connected to the power supply via the LED light strip.

16. An LED tube lamp, comprising:
a lamp tube;
two end caps respectively at two opposite ends of the lamp tube, each of the end caps comprising:
an electrically insulating tube;
a thermal conductive member extending from the electrically insulating tube towards the corresponding end of the lamp tube;
two conductive pins being disposed on a surface of the end cap; and
a plurality of heat-dissipating openings being formed on the surface of the end cap and divided into two sets, and the two sets of the heat-dissipating openings being symmetric to each other with respect to a plane passing through the two conductive pins,
wherein an accommodation space is formed between an inner surface of the thermal conductive member and an outer surface of the lamp tube;

a hot melt adhesive disposed between the two end caps and the lamp tube, wherein the hot melt adhesive is in the accommodation space at a location where a hypothetical plane being perpendicular to an axial direction of the lamp tube passes through the thermal conductive member, the hot melt adhesive, and the outer surface of the lamp tube;
a power supply in one or separately both of the end caps; and
an LED light strip in the tube, the LED light strip being provided with a plurality of LED light sources mounted thereon.

17. The LED tube lamp according to claim 16 , wherein the plurality of heat-dissipating openings are separately in a shape of an arc.

18. The LED tube lamp according to claim 16 , wherein the surface of the end cap is vertical to the length direction of the lamp tube.

19. The LED tube lamp according to claim 17 , wherein the plurality of heat-dissipating openings are in a shape of arcs with different sizes.

20. The LED tube lamp according to claim 19 , wherein the sizes of the arcs of the plurality of heat-dissipating openings gradually vary.

21. The LED tube lamp according to claim 18 , wherein the plurality of heat-dissipating openings are separately in a shape of a circle.

22. The LED tube lamp according to claim 21 , wherein the number of the plurality of heat-dissipating openings is three, and the three heat-dissipating openings are arranged in a shape of an arc.

23. The LED tube lamp according to claim 18 , wherein the plurality of heat-dissipating openings are a combination in a shape of an arc and a circle.

24. The LED tube lamp according to claim 16 , wherein the LED light sources are electrically connected to the power supply via the LED light strip.

Assignees

• Jiaxing Super Lighting Electric Appliance Co Ltd
• Jiaxing Super Lighting Electric Appliance Co Ltd

Inventors

• Jiang Tao
• Xiong Aiming

Classifications

• F21V7/28

  characterised by coatings · CPC title

• H05B45/37

  Converter circuits · CPC title

• H05B45/50

  responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits · CPC title

• F21V29/70

  characterised by passive heat-dissipating elements, e.g. heat-sinks · CPC title

• F21Y2101/00

  Point-like light sources · CPC title