Heat dissipation assembly used for large power LED lamp

Abstract

The invention provides a heat pipe type heat dissipation assembly used for a large power LED lamp. The heat pipe type dissipation assembly is composed of a heat sink, a heat pipe and rib heat dissipation fins. The heat sink is a heat conduction block. One end of the heat pipe is connected with the heat sink, and the other end of the heat pipe is connected with lengthways rib heat dissipation fins. The heat dissipation fins are arranged at positions, suitable for heat dissipation, in a car light body. The heat pipe type heat dissipation assembly is characterized in that the inner wall of the heat pipe is provided with an imbibition core containing a working liquid, and the working liquid is prepared by the following proportions, 43 m% of methanol, 40 m% of ethanol, 17 m% of acetone.

Description

technical field [0001] The invention relates to a heat dissipation assembly, in particular to a heat pipe type heat dissipation assembly used in high-power LED lamps, such as street lamps and vehicle lamps. Background technique [0002] At present, light-emitting diodes are used as light sources for car lights because of their long life and high luminous efficiency. However, more than 70% of the electric power of light-emitting diodes is still converted into heat, resulting in an increase in the temperature of the light-emitting device and a decrease in luminous efficiency. , Light color changes and even failure, but also cause changes in packaging materials, damage to device structures and other consequences. High-power LED lights have higher heat dissipation requirements, such as street lights, car lights, etc., and their LED power generally exceeds 10W, or even higher. The heat generated during work cannot be ignored. There are many heat dissipation methods in the prior a...

AI Technical Summary

Problems solved by technology

[0002] At present, light-emitting diodes are used as light sources for car lights because of their long life and high luminous efficiency. However, more than 70% of the electric power of light-emitting diodes is still converted into heat, resulting in an increase in the temperature of the light-emitting device and a decrease in luminous efficiency. , light color changes and even failure, but also cause changes in packaging materials, device structure damage and other consequences

High-power LED lights have higher heat dissipation requirements, such as street lights, car lights, etc., and their LED power generally exceeds 10W, or even higher. The heat generated during work cannot be ignored. There are many heat dissipation methods in the prior art, such as using Heat sinks, fans, etc., also partially use heat pipes, but the liquid working fluid in the heat pipes has a single composition, which cannot meet the heat dissipation requirements of the above-mentioned high-power LED lamps

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