Alloy type thermal fuse link for rapid fusing of LED lamp

Abstract

The invention provides an alloy type thermal fuse link for rapid fusing of an LED lamp. Trapezoidal wedges are arranged on two sides of the inner wall of a shell identification surface in the thermal fuse link, two leads are inserted between the two trapezoidal wedges and the inner wall of a shell mounting surface, one ends of the two leads are overlapped after being welded by a thermal element, the periphery of the thermal element is filled with a fluxing agent, one side surface of the thermal element is directly contacted with the inner wall of the shell mounting surface, the other end of the lead extends out of the shell, and an opening of the shell is sealed by an epoxy resin glue. The upper part of each trapezoidal wedge is provided with a guide surface, the thickness of the trapezoidal wedge changes along with the width of the inner cavity of the shell and the diameter of the lead, and the width of the trapezoidal wedge can ensure that the two leads are positioned after being inserted into the shell. The thermal link adopts a trapezoidal wedge-shaped shell which is provided with a slope guide surface and is used for fixing the lead, the thermal element can be in contact with the inner wall of a mounting surface at the bottom in the shell, and heat energy absorbed by the mounting surface of the thermal link enables the thermal element to be quickly fused under the help of a fluxing agent.

Description

technical field [0001] The invention relates to the technical field of thermal fuse manufacturing, in particular to an alloy type thermal fuse used for fast fusing of LED lamps. Background technique [0002] At present, when the existing T8 series LED lamps are in use, the 220V power supply bridge rectifier chip diode will quickly heat up when the circuit is abnormal. When the temperature rise of the bridge rectifier chip diode reaches a certain value, it will affect the entire LED lamp. The normal operation of the circuit board will cause the LED lamp circuit board to catch fire and burn in severe cases. The working principle of the thermal fuse is: the thermal energy of the diode is conducted to the heat-conducting adhesive, and then the heat-conducting adhesive is conducted to the mounting surface of the housing, and the mounting surface of the housing conducts the heat energy to the heating element, and the heating element is fused under the action of the flux after bein...

AI Technical Summary

Problems solved by technology

[0004] An alloy-type thermal fuse (CN210897130U) used for fast fusing of LED lamps has the following technical problems: 1. The sealed epoxy resin glue is cured at room temperature, and the curing time is long. It is easy to separate from the installation surface, the production process is difficult to control, and the pass rate of the finished product is low

[0005] An alloy type thermal fuse with resistance to breaking current (CN105428179B), the existing technical problems are: 1. The function of the two U-shaped positioning grooves is to separate the thermal element from the housing, and conduct the heat energy absorbed from the lead wire to the heat sink. After the element, the temperature of the thermal element rises rapidly and blows

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