Led tube lamp

Patent metadata

Field	Value
Publication number	US-2016295706-A1
Application number	US-201514859370-A
Country	US
Kind code	A1
Filing date	Sep 21, 2015
Priority date	Apr 2, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

An LED tube lamp including a lamp tube, an end cap attached to an end of the lamp tube, a power supply disposed in the end cap, and an LED light bar disposed inside the lamp tube. The LED light bar is mounted with LED light sources which are electrically connected to the power supply by way of the LED light bar. The LED light bar includes a bendable circuit sheet which is longer than the lamp tube. A soldering pad is configured and disposed at an end of the bendable circuit sheet. The soldering pad is formed with a through-hole or a notch to allow tin solder to pass through when soldering such that the bendable circuit sheet can be directly soldered and electrically connected to the power supply.

First claim

What is claimed is:

1 . An LED tube lamp, comprising:
a lamp tube; an end cap attached to an end of the lamp tube; a power supply disposed in the end cap; and an LED light bar disposed inside the lamp tube and mounted with a plurality of LED light sources, the LED light sources being electrically connected to the power supply by the LED light bar; wherein the LED light bar includes a bendable circuit sheet disposed with a soldering pad at an end of the bendable circuit sheet.

2 . The LED tube lamp of claim 1 , wherein the power supply comprises a printed circuit board disposed with a soldering pad corresponding to the soldering pad of the bendable circuit sheet, and the soldering pad of the bendable circuit sheet is electrically connected to the soldering pad of the printed circuit board of the power supply to provide electrical connection between the power supply and the LED light sources.

3 . The LED tube lamp of claim 2 , wherein the soldering pad of the bendable circuit sheet and the soldering pad of the printed circuit board of the power supply point toward same direction when soldering.

4 . The LED tube lamp of claim 2 , wherein the soldering pad of the bendable circuit sheet and the soldering pad of the printed circuit board of the power supply point toward opposite directions when soldering.

5 . The LED tube lamp of claim 1 , wherein more than one of the soldering pad is disposed on the bendable circuit sheet.

6 . The LED tube lamp of claim 5 , wherein two soldering pads are disposed on the bendable circuit sheet, and an electrically insulating hole is formed and disposed between the two soldering pads of the bendable circuit sheet to prevent from short circuit between the two soldering pads when soldering.

7 . The LED tube lamp of claim 6 , wherein an alignment hole is configured and disposed behind the electrically insulating hole to allow a soldering machine to automatically locate the soldering pads of the bendable circuit sheet.

8 . The LED tube lamp of claim 5 , wherein at least three soldering pads are disposed on the bendable circuit sheet and arranged in one row or two rows.

9 . The LED tube lamp of claim 5 , wherein at least one of the soldering pads is formed with a through-hole.

10 . The LED tube lamp of claim 9 , wherein the through-hole has a diameter of 1 mm to 2 mm.

11 . The LED tube lamp of claim 9 , wherein the soldering pad of the bendable circuit board is formed with a solder ball above the through-hole after soldering is completed, and a diameter of the solder ball is larger than the diameter of the through-hole.

12 . The LED tube lamp of claim 9 , wherein a distance between the through-hole and an edge of the bendable circuit sheet is 1 mm or less.

13 . The LED tube lamp of claim 5 , wherein at least one of the soldering pads is formed with a notch at an edge of the bendable circuit sheet.

14 . The LED tube lamp of claim 13 , wherein the soldering pad of the bendable circuit board is formed with a solder ball above the notch after soldering is completed, and a diameter of the solder ball is larger than a diameter of the notch.

15 . An LED tube lamp, comprising:
a lamp tube; an end cap attached to an end of the lamp tube; a power supply disposed in the end cap; and an LED light bar disposed inside the lamp tube and mounted with a plurality of LED light sources, the LED light sources being electrically connected to the power supply by the LED light bar; wherein the LED light bar includes a bendable circuit sheet with a length longer than a length of the lamp tube and is disposed with at least one soldering pad at an end of the bendable circuit sheet, and the power supply is disposed with a soldering pad corresponding to the soldering pad of the bendable circuit sheet.

16 . The LED tube lamp of claim 15 , wherein the bendable circuit sheet is formed with a hole near the at least one soldering pad to insulate the soldering pad.

17 . The LED tube lamp of claim 15 , wherein the at least one soldering pad is formed with a through-hole.

18 . The LED tube lamp of claim 15 , wherein the at least one soldering pad is formed with a notch at an edge of the bendable circuit sheet.

19 . The LED tube lamp of claim 15 , wherein a soldered tin between the soldering pad of the bendable circuit board and the soldering pad of the power supply forms a rivet-like structure.

20 . An LED tube lamp, comprising:
a lamp tube; two end caps attached to two ends of the lamp tube, respectively; a power supply disposed in the end cap; and an LED light bar disposed inside the lamp tube and mounted with a plurality of LED light sources, the LED light sources being electrically connected to the power supply by the LED light bar; wherein the LED light bar includes a bendable circuit sheet with a length longer than a length of the lamp tube to form a freely extending end portion at one end of the bendable circuit sheet, the end of the bendable circuit sheet is disposed with at least one soldering pad, the at least one soldering pad is formed with either a through-hole or a notch, and the power supply is disposed with a soldering pad corresponding to the soldering pad of the bendable circuit sheet.

Assignees

• Jiaxing Super Lighting Electric Appliance Co Ltd

Inventors

• Jiang Tao

Classifications

• H05K2201/0969

  Apertured conductors · CPC title

• H05K3/363 Primary

  by soldering · CPC title

• H05K1/118

  specially for flexible printed circuits, e.g. using folded portions · CPC title

• F21Y2107/70

  on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form · CPC title

• F21Y2103/10

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