Large-power LED street lamp

Abstract

A large-power LED street lamp is characterized in that the street lamp comprises a lamp post, a lampshade, a substrate, a heat dissipating device and a fixing device, wherein the lampshade is composed of an upper cover and a lower cover, the upper cover and the lower cover form a sealed receiving space, a partition plate is arranged in the sealed receiving space so as to separate the sealed receiving space into a first receiving cavity and a second receiving cavity, the first receiving cavity is relative to the upper cover while the second receiving cavity is relative to the lower cover, the lampshade is connected with the lamp post, an opening is disposed in the center of the partition plate, the substrate is arranged at the opening of the partition plate of the first receiving cavity, a plurality of luminous bodies are arranged on one side, opposite to the opening of the partition plate and facing the second receiving cavity, of the substrate, the heat dissipating device is arranged on the substrate of the first receiving cavity and stretches to the outside of the lampshade, the fixing device is used for fixing the heat dissipating device onto the substrate, the heat dissipation device is a heat conduction pipe, and a liquid working medium is packaged inside the heat conduction pipe and contains methyl alcohol, ethanol, acetone and glycerinum.

Description

technical field [0001] The invention relates to a high-power LED street lamp, in particular to a high-power LED street lamp which uses a heat-conducting tube to transfer heat to the outside. Background technique [0002] Recently, light emitting diodes (Light Emitting Diodes, LEDs) have gradually replaced traditional light bulbs and are widely used in various lighting devices due to their advantages of power saving, long life, and no mercury pollution. And no matter what kind of lighting body is used, it will generate heat due to internal loss and function conversion during lighting. This heat will increase the temperature of the lighting device, making various components easily damaged or shortening the life. Therefore, how to reduce The heat generated by lighting devices has gradually attracted people's attention. [0003] Existing street lamps are not equipped with any cooling device, so that the heat generated by the lighting device cannot be removed in a timely manner;...

AI Technical Summary

Problems solved by technology

[0004] Due to the limited internal space of the lampshade and the limited number of cooling fins installed in this kind of street lamp structure, the heat dissipation effect is not good; at the same time, each street lamp needs to be installed with at least one fan; At a higher position, it is not easy to detect when the fan is damaged, and it is also inconvenient to replace, thus affecting the lighting efficiency

[0005] In addition, the existing high-power LED street lamps also use heat pipes for heat dissipation, but the liquid working fluid in the heat pipes has a single composition, such as methanol, water, ethanol, etc., which cannot meet the heat dissipation requirements of high-power LED street lamps.

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