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US 11,686,457 B2Granted
LED tube lamp
AssigneeJiaxing Super Lighting Electric Appliance Co., Ltd
InventorsTao Jiang, Qifeng Ye, Yueqiang Zhang
Life of this patent
Estimating the term…
Abstract
An LED tube lamp includes a tube having two ends, two end caps respectively at the two ends of the tube, a power supply module in one or both of the end caps, an LED light strip in the tube; and LED light sources on the LED light strip. Each of the end caps includes a lateral wall substantially coaxial with the tube and an end wall substantially perpendicular to an axial direction of the lateral wall. An axial direction of one or more openings of each of the end caps is substantially parallel with the axial direction of the lateral wall. The LED light sources are electrically connected to the power supply module via the LED light strip. The power supply module includes a fuse, and the fuse is positioned close to the end wall of the first end cap.
Claims39
An LED tube lamp, comprising:
- a glass tube having two ends;
- an LED light strip attached to an inner circumferential surface of the glass tube;
- a plurality of LED light sources mounted on the LED light strip;
- a power supply module electrically connected to the LED light strip and configured to drive the plurality of LED light sources;
- and
- a first end cap and a second end cap respectively attached at the two ends of the glass tube, each of the first and second end caps comprising a lateral wall and an end wall, the lateral wall substantially being coaxial with the glass tube and connected to the glass tube, the end wall substantially being perpendicular to an axial direction of the lateral wall and connected to an end of the lateral wall away from the glass tube, wherein the end wall comprises an insulating portion made of an insulating material and at least one opening being on the end wall,′
- wherein the power supply module comprises a printed circuit board and a plurality of electronic components mounted on the printed circuit board, the printed circuit board comprises a first surface and a second surface opposite to and substantially parallel to the first surface, and the first surface and the second surface of the printed circuit board are substantially parallel with the axial direction of the lateral wall;
- wherein at least some of the plurality of electronic components comprise a rectifying circuit having at least two input terminals and configured to rectify a signal received from the at least two input terminals, at least one of the plurality of electronic components comprises a filtering circuit electrically connected to the rectifying circuit;
- wherein the plurality of electronic components comprise a fuse, the fuse is positioned close to the end wall of the first end cap and connected to one of the input terminals of the rectifying circuit;
- wherein the LED light strip comprises two first soldering pads arranged at an end of the LED light strip and the two first soldering pads are respectively electrically connected to two second soldering pads on the printed circuit board, and the printed circuit board is disposed on the end of the LED light strip;
- wherein each of the end caps comprises two conductive pins connected to the insulating portion, and the fuse is electrically connected between one of the two conductive pins and one of the input terminals of the rectifying circuit;
- wherein at least some of the electronic components form a driving circuit electrically connected to the filtering output terminals of the filtering circuit and have two driving output terminals electrically connected to the LED light strip;
- and further wherein the driving circuit comprise:
- a controller;
- a diode, having an anode electrically connected to one of the filtering output terminals and one of the driving output terminals;
- a switch, having a first terminal coupled to the other one of the filtering output terminals, a second terminal electrically connected to a cathode of the diode, and a control terminal coupled to the controller, wherein the switch is turned on or off in response to a signal received from the controller;
- and
- an inductor, having an end electrically connected to the second terminal of the switch, and another end electrically connected to the LED light strip via the other one of the driving output terminals.
15 more elements
An LED tube lamp, comprising:
- a glass tube having two ends;
- an LED light strip attached to an inner circumferential surface of the glass tube;
- a plurality of LED light sources mounted on the LED light strip;
- a power supply module electrically connected to the LED light strip and configured to drive the plurality of LED light sources;
- and
- a first end cap and a second end cap respectively attached at the two ends of the glass tube, each of the first and second end caps comprising a lateral wall and an end wall, the lateral wall substantially being coaxial with the glass tube and connected to the glass tube, the end wall substantially being perpendicular to an axial direction of the lateral wall and connected to an end of the lateral wall away from the glass tube, wherein the end wall comprises an insulating portion made of an insulating material and at least one opening being on the end wall,′
- wherein the power supply module comprises a printed circuit board and a plurality of electronic components mounted on the printed circuit board, the printed circuit board comprises a first surface and a second surface opposite to and substantially parallel to the first surface, and the first surface and the second surface of the printed circuit board are substantially parallel with the axial direction of the lateral wall;
- wherein at least some of the plurality of electronic components comprise a rectifying circuit having at least two input terminals and configured to rectify a signal received from the at least two input terminals, at least one of the plurality of electronic components comprises a filtering circuit electrically connected to the rectifying circuit;
- wherein the plurality of electronic components comprise a fuse, the fuse is positioned close to the end wall of the first end cap and connected to one of the input terminals of the rectifying circuit;
- wherein the LED light strip comprises two first soldering pads arranged at an end of the LED light strip and the two first soldering pads are respectively electrically connected to two second soldering pads on the printed circuit board, and the printed circuit board is disposed on the end of the LED light strip;
- wherein each of the end caps comprises two conductive pins connected to the insulating portion, and the fuse is electrically connected between one of the two conductive pins and one of the input terminals of the rectifying circuit;
- wherein at least some of the electronic components form a driving circuit electrically connected to the filtering output terminals of the filtering circuit and have two driving output terminals electrically connected to the LED light strip;
- and further wherein the driving circuit comprises:
- a controller;
- a diode, having an anode electrically connected to one of the filtering output terminals and one of the driving output terminals;
- a switch, having a first terminal coupled to a cathode of the diode, a second terminal coupled to the other one of the filtering output terminals, and a control terminal coupled to the controller, wherein the switch is turned on or off in response to a signal received from the controller;
- and
- an inductor, having an end electrically connected to the first terminal of the switch and the anode of the diode, and another end electrically connected to the LED light strip via the other one of the driving output terminals.
15 more elements
An LED tube lamp, comprising:
- a glass tube having two ends;
- an LED light strip attached to an inner circumferential surface of the glass tube;
- a plurality of LED light sources mounted on the LED light strip;
- a power supply module electrically connected to the LED light strip and configured to drive the plurality of LED light sources;
- and
- a first end cap and a second end cap respectively attached at the two ends of the glass tube, each of the first and second end caps comprising a lateral wall and an end wall, the lateral wall substantially being coaxial with the glass tube and connected to the glass tube, the end wall substantially being perpendicular to an axial direction of the lateral wall and connected to an end of the lateral wall away from the glass tube, wherein the end wall comprises an insulating portion made of an insulating material and at least one opening being on the end wall,′
- wherein the power supply module comprises a printed circuit board and a plurality of electronic components mounted on the printed circuit board, the printed circuit board comprises a first surface and a second surface opposite to and substantially parallel to the first surface, and the first surface and the second surface of the printed circuit board are substantially parallel with the axial direction of the lateral wall;
- wherein at least some of the plurality of electronic components comprise a rectifying circuit having at least two input terminals and configured to rectify a signal received from the at least two input terminals, at least one of the plurality of electronic components comprises a filtering circuit electrically connected to the rectifying circuit;
- wherein the plurality of electronic components comprise a fuse, the fuse is positioned close to the end wall of the first end cap and connected to one of the input terminals of the rectifying circuit;
- wherein the LED light strip comprises two first soldering pads arranged at an end of the LED light strip and the two first soldering pads are respectively electrically connected to two second soldering pads on the printed circuit board, and the printed circuit board is disposed on the end of the LED light strip;
- wherein each of the end caps comprises two conductive pins connected to the insulating portion, and the fuse is electrically connected between one of the two conductive pins and one of the input terminals of the rectifying circuit;
- wherein at least some of the electronic components form a first circuit electrically connected between the rectifying circuit and the filtering circuit and cause a delay before the LED tube lamp lights up.
9 more elements
An LED tube lamp, comprising:
- a glass tube having two ends;
- an LED light strip attached to an inner circumferential surface of the glass tube;
- a plurality of LED light sources mounted on the LED light strip;
- a power supply module electrically connected to the LED light strip and configured to drive the plurality of LED light sources;
- and
- a first end cap and a second end cap respectively attached at the two ends of the glass tube, each of the end caps comprising a lateral wall and an end wall, the lateral wall substantially being coaxial with the glass tube and connected to the glass tube, the end wall substantially being perpendicular to an axial direction of the lateral wall and connected to an end of the lateral wall away from the glass tube,
- wherein the power supply module comprises a printed circuit board and a plurality of electronic components mounted on the printed circuit board, the printed circuit board comprises a first surface and a second surface opposite to and substantially parallel to the first surface, and the first surface and the second surface of the printed circuit board are substantially parallel with the axial direction of the lateral wall;
- wherein at least some of the plurality of electronic components comprise a rectifying circuit having at least two input terminals and configured to rectify a signal received from the at least two input terminals, at least one of the plurality of electronic components comprises a filtering circuit electrically connected to the rectifying circuit;
- wherein the plurality of electronic components comprise a fuse which is positioned closest to the end wall of the first end cap and connected to one of the input terminals of the rectifying circuit;
- wherein the end wall comprises a first portion made of an insulating material;
- wherein at least some of the electronic components form a first circuit electrically connected between the rectifying circuit and the filtering circuit and cause a delay before the LED tube lamp lights up.
8 more elements
An LED tube lamp, comprising:
- a glass tube having two ends;
- an LED light strip attached to an inner circumferential surface of the glass tube;
- a plurality of LED light sources mounted on the LED light strip;
- a power supply module electrically connected to the LED light strip and configured to drive the plurality of LED light sources;
- and
- a first end cap and a second end cap respectively attached at the two ends of the glass tube, each of the end caps comprising a lateral wall and an end wall, the lateral wall substantially being coaxial with the glass tube and connected to the glass tube, the end wall substantially being perpendicular to an axial direction of the lateral wall and connected to an end of the lateral wall away from the glass tube,
- wherein the power supply module comprises a printed circuit board and a plurality of electronic components mounted on the printed circuit board, the printed circuit board comprises a first surface and a second surface opposite to and substantially parallel to the first surface, and the first surface and the second surface of the printed circuit board are substantially parallel with the axial direction of the lateral wall;
- wherein at least some of the plurality of electronic components comprise a rectifying circuit having at least two input terminals and configured to rectify a signal received from the at least two input terminals, at least one of the plurality of electronic components comprises a filtering circuit electrically connected to the rectifying circuit;
- wherein the plurality of electronic components comprise a fuse which is positioned closest to the end wall of the first end cap and connected to one of the input terminals of the rectifying circuit;
- wherein the end wall comprises a first portion made of an insulating material;
- wherein at least some of the electronic components form a driving circuit electrically connected to filtering output terminals of the filtering circuit and have two driving output terminals electrically connected to the LED light strip, and further wherein the driving circuit comprise:
- a controller;
- a diode, having an anode electrically connected to one of the filtering output terminals and one of the driving output terminals;
- a switch, having a first terminal coupled to the other one of the filtering output terminals, a second terminal electrically connected to a cathode of the diode, and a control terminal coupled to the controller, wherein the switch is turned on or off in response to a signal received from the controller;
- and
- an inductor, having an end electrically connected to the second terminal of the switch, and another end electrically connected to the LED light strip via the other one of the driving output terminals.
13 more elements
Dependencies are inferred from the claim text.