LED tube lamp

• US 10,240,725 B2
• Filed: 02/06/2018
• Issued: 03/26/2019
• Est. Priority Date: 03/10/2015
• Status: Active Grant

• Current Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Original Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Inventors: Xiong, Aiming, Ye, Qifeng, Zhang, Yueqiang
• Primary Examiner(s): Richardson, Jany
• Application Number:
  US15/889,634
• Publication Number:
  US 20180163931A1
• Time in Patent Office: 413 Days
• Field of Search: None
• 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 9/278 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/66 Details of globes or covers forming part of the light source
• CPC Class Codes: F21V 25/10 coming into action when lighting device is overloaded, e.g. thermal switch
• CPC Class Codes: F21V 3/062 the material being plastics
• 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]
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/345 Current stabilisation; Maintaining constant current
• CPC Class Codes: H05B 45/3578 Emulating the electrical or functional characteristics of discharge lamps
• CPC Class Codes: H05B 45/36 Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
• CPC Class Codes: H05B 45/37 Converter circuits
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 45/59 for reducing or suppressing flicker or glow effects
• CPC Class Codes: H05B 47/24 Circuit arrangements for protecting against overvoltage
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An LED tube lamp, comprising a lamp tube, which includes a light transmissive portion, a reinforcing portion and an end cap; an LED module, which includes an LED light source and an LED light strip; and a power supply module, which includes a set of N electronic components operably interconnected to drive the LED light source, wherein: the light transmissive portion is fixedly connected to the reinforcing portion; the reinforcing portion includes a platform and a bracing structure; the bracing structure is fixedly connected to the platform and holds the platform in place; the LED light source is thermally and electrically connected to the LED light strip, which is in turn thermally connected to the reinforcing portion; and the end cap is attached to an end of the lamp tube.

Claims

1. An LED tube lamp, comprising:

a lamp tube;

a reinforcing portion attached to an inner circumferential surface of the lamp tube, the reinforcing portion comprising a platform;

an LED light strip disposed on the platform and thermally coupled to the reinforcing portion, the LED light strip comprising a wiring layer and a plurality of LED light sources mounted on the wiring layer;

a power supply disposed on the reinforcing portion and configured to drive the plurality of LED light sources, the power supply comprising a circuit board separate from the light strip and a plurality of electronic components mounted on the circuit board; and

two end caps attached to two ends of the lamp tube respectively,

wherein, the plurality of electronic components are interconnected to form a power supply module comprising at least a rectifying circuit and a filtering circuit, the rectifying circuit is coupled to two pins to receive an external signal, and the filtering circuit is coupled to the rectifying circuit and is configured to receive a signal from the rectifying circuit.

2. The LED tube lamp of claim 1, wherein the LED light strip further comprises a protection layer disposed on a first surface of the wiring layer, the plurality of LED light sources mounted on the first surface of the wiring layer.

3. The LED tube lamp of claim 2, wherein the LED light strip further comprises a dielectric layer disposed on a second surface of the wiring layer.

4. The LED tube lamp of claim 1, the reinforcing portion further comprising a curvilinear rib, wherein the curvilinear rib connects to the platform and attaches to the inner surface of the lamp tube.

5. The LED tube lamp of claim 1, wherein the power supply module further comprises an over voltage protection circuit, the over voltage protection circuit coupled to the filtering circuit for detecting a filtered signal.

6. The LED tube lamp of claim 1, wherein, the power supply module further comprises a driving circuit, wherein the driving circuit is coupled to the filtering circuit and is configured to receive a signal from the filtering circuit.

7. The LED tube lamp of claim 6, wherein the driving circuit comprises one of a buck converter, a boost converter and a buck-boost converter.

8. The LED tube lamp of claim 1, wherein the filtering circuit comprises a pi filter circuit comprising two capacitors and one inductor.

9. The LED tube lamp of claim 8, wherein the power supply module further comprises an installation detection circuit, and the installation detection circuit is coupled to the rectifying circuit and the filtering circuit.

10. The LED tube lamp of claim 9, wherein the power supply module further comprises a driving circuit, and the driving circuit is coupled to the filtering circuit and is configured to receive a signal from the filtering circuit.

11. The LED tube lamp of claim 1, wherein a portion of the reinforcing portion, a portion of the LED light strip, and a portion of the circuit board are stacked sequentially in a radial direction of the LED tube lamp.

12. An LED tube lamp, comprising:

a lamp tube;

a reinforcing portion comprising a first surface and second surface, the reinforcing portion disposed in the lamp tube by fixing the first surface on an inner circumferential surface of the lamp tube;

an LED light strip disposed on the second surface of the reinforcing portion and thermally coupled to the reinforcing portion, the LED light strip comprising a wiring layer and a plurality of LED light sources mounted on the wiring layer;

a power supply disposed on the second surface of the reinforcing portion and configured to drive the LED light source, the power supply comprising a circuit board separate from the LED light strip and a plurality of electronic components mounted on the circuit board; and

two end caps attached to two ends of the lamp tube respectively,

wherein, the plurality of electronic components are interconnected to form a power supply module comprising at least a rectifying circuit and a filtering circuit, the rectifying circuit is coupled to two pins to receive an external signal, and the filtering circuit is coupled to the rectifying circuit and is configured to receive a signal from the rectifying circuit.

13. The LED tube lamp of claim 12, wherein the LED light strip further comprises a protection layer disposed on a first surface of the wiring layer, the plurality of LED light sources mounted on the first surface of the wiring layer.

14. The LED tube lamp of claim 13, wherein the LED light strip further comprises a dielectric layer disposed on a second surface of the wiring layer.

15. The LED tube lamp of claim 12, the reinforcing portion further comprising a curvilinear rib, wherein the curvilinear rib connects to a platform and attaches to the inner surface of the lamp tube.

16. The LED tube lamp of claim 12, wherein the power supply module further comprises an over voltage protection circuit, the over voltage protection circuit coupled to the filtering circuit for detecting a filtered signal.

17. The LED tube lamp of claim 12, wherein, the power supply module further comprises a driving circuit, and the driving circuit is coupled to the filtering circuit and is configured to receive a signal from the filtering circuit.

18. The LED tube lamp of claim 17, wherein the driving circuit comprises one of a buck converter, a boost converter and a buck-boost converter.

19. The LED tube lamp of claim 12, wherein the filtering circuit comprises a pi filter circuit comprising two capacitors and one inductor.

20. The LED tube lamp of claim 19, wherein the power supply module further comprises an installation detection circuit, and the installation detection circuit is coupled to the rectifying circuit and the filtering circuit.

21. The LED tube lamp of claim 20, wherein the power supply module further comprises a driving circuit, and the driving circuit is coupled to the filtering circuit and is configured to receive a signal from the filtering circuit.

22. The LED tube lamp of claim 12, wherein a portion of the reinforcing portion, a portion of the LED light strip, and a portion of the circuit board are stacked sequentially in a radial direction of the LED tube lamp.

23. An LED tube lamp, comprising:

a lamp tube;

a reinforcing portion comprising a bracing structure, the bracing structure comprising a combination of a vertical rib and a horizontal rib;

an LED light strip abutted against the bracing structure which holds the LED light strip in place, the LED light strip comprising a wiring layer and a plurality of LED light sources mounted on the wiring layer;

a power supply comprising a circuit board separate from the LED light strip and a plurality of electronic components mounted on the circuit board and configured to drive the LED light source; and

two end caps attached to two ends of the lamp tube respectively,

wherein, the plurality of electronic components are interconnected to form a power supply module comprising at least a rectifying circuit and a filtering circuit, the rectifying circuit is coupled to two pins to receive an external signal, and the filtering circuit is coupled to the rectifying circuit and is configured to receive a signal from the rectifying circuit.

24. The LED tube lamp of claim 23, wherein the LED light strip further comprises a protection layer disposed on a first surface of the wiring layer, the plurality of LED light sources mounted on the first surface of the wiring layer.

25. The LED tube lamp of claim 24, wherein the LED light strip further comprises a dielectric layer disposed on a second surface of the wiring layer.

26. The LED tube lamp of claim 23, the reinforcing portion further comprising a curvilinear rib, wherein the curvilinear rib connects to a platform and attaches to the inner surface of the lamp tube.

27. The LED tube lamp of claim 23, wherein the power supply module further comprises an over voltage protection circuit, the over voltage protection circuit coupled to the filtering circuit for detecting a filtered signal.

28. The LED tube lamp of claim 23, wherein, the power supply module further comprises a driving circuit, and the driving circuit is coupled to the filtering circuit and is configured to receive a signal from the filtering circuit.

29. The LED tube lamp of claim 28, wherein the driving circuit comprises one of a buck converter, a boost converter and a buck-boost converter.

30. The LED tube lamp of claim 23, wherein the filtering circuit comprises a pi filter circuit comprising two capacitors and one inductor.

31. The LED tube lamp of claim 30, wherein the power supply module further comprises an installation detection circuit, and the installation detection circuit is coupled to the rectifying circuit and the filtering circuit.

32. The LED tube lamp of claim 31, wherein the plurality of electronic components are interconnected further to form a driving circuit, and the driving circuit is coupled to the filtering circuit and is configured to receive a signal from the filtering circuit.

33. The LED tube lamp of claim 23, wherein a portion of the reinforcing portion, a portion of the LED light strip, and a portion of the circuit board are stacked sequentially in a radial direction of the LED tube lamp.