LED heat radiator based on heat pipe technology

Abstract

The invention relates to a high-power LED heat radiator, and belongs to the field of LED heat radiation. The high-power LED heat radiator based on a heat pipe technology is characterized in that a gravity heat pipe in the center and sunflower-shaped cooling fins (4) around the gravity heat pipe are included, the gravity heat pipe comprises a middle through pipe (1), an upper cover (2) and a bottom cover (3), the middle through pipe (1) is integrally welded to the upper cover (2) and the bottom cover (3), vacuum is formed in a sealing mode, the space among the middle through pipe, the upper cover and the bottom cover is filled with refrigeration media (5), the cooling fins (4) are arranged around the through pipe (1), a plurality of evenly-distributed protruding groove emulsion structures (6) are arranged in the portion, in the through pipe, of the upper surface of the bottom cover (3), a sealing hole (7) is formed in the middle of the upper cover (3), and the lower portion of the bottom cover (3) is connected with an LED lamp. The structure of overall vacuum sealing and the surrounding cooling fins is adopted, the heat conduction efficiency of the heat pipe is improved, heat radiation is fast, the size is small, and the service life is long.

Description

technical field [0001] The invention relates to a high-power LED radiator, in particular to an LED radiator based on heat pipe technology. Background technique [0002] At present, the manufacture of high-power LEDs is developing towards high performance, integration and miniaturization, and the power density of its chips can reach hundreds of W / cm2. The electro-optical conversion efficiency of high-power LED is about 20%, and about 80% of the electric energy is converted into heat, so the heat flux density at the chip is extremely high. However, the rise of LED junction temperature will lead to a decrease in luminous efficiency, a shortened lifespan, a shift in the luminous spectrum, and in severe cases, the chip will be burned. Therefore, heat dissipation is one of the key problems that need to be solved in high-power LED lighting. [0003] There are also many proposals for radiators on the market now, but due to the problem of heat dissipation efficiency, they are basica...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an LED radiator based on heat pipe technology, which solves the defects of slow start-up of heat dissipation, large temperature gradient and low heat conduction efficiency of current radiators.

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