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LED tube lamp with heat dissipation of power supply in end cap

  • US 10,634,337 B2
  • Filed: 05/31/2016
  • Issued: 04/28/2020
  • Est. Priority Date: 12/05/2014
  • Status: Active Grant
First Claim
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1. An LED tube lamp, comprising:

  • an LED lamp tube, comprising;

    a main body; and

    two rear end regions respectively at two ends of the main body;

    two end caps respectively sleeving the two rear end regionsan LED light strip, at least a portion of the LED light strip attached to the inner circumferential surface of the LED lamp tube, the LED light strip being provided with a plurality of LED light sources disposed thereon; and

    a power supply comprising a circuit board electrically connecting the LED light strip and configured to drive the plurality of LED light sources;

    wherein the end cap comprises;

    a tube wall substantially coaxial with the LED lamp tube and connected to the end of the LED lamp tube;

    an end wall substantially perpendicular to an axial direction of the tube wall and connected to an end of the tube wall away from the LED lamp tube; and

    two vertical ribs on an inner surface of the tube wall, the two vertical ribs being spaced from each other and extending along the axial direction of the tube wall;

    wherein each of the vertical ribs comprises a first side, a second side, and a third side, the first side and the second side are opposite to each other, the second side is closer to the end wall relative to the first side, the third side is away from the tube wall and is between the first side and the second side;

    further wherein the LED light strip comprises a free extending end portion at one end thereof, the free extending end portion being detached from the inner circumferential surface of the LED lamp tube and electrically connecting to the circuit board,wherein the free extending end portion is directly soldered to the circuit board; and

    wherein at least a portion of the bottom surface of the LED light strip is attached on the inner circumferential surface of the LED lamp tube and the plurality of LED light sources are mounted on the top surface of the LED light strip, and further wherein the LED light strip comprises two first soldering pads arranged on the free extending end portion and on the top surface of the LED light strip.

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