LED street lamp

Abstract

The invention discloses an LED street lamp which comprises a mounting support and a lamp pole head. A lower end shell, a heat sink and an upper end shell are sequentially connected along the mounting support from bottom to top, and the street lamp further comprises an LED light source structure and a light-transmitting cover with ventilation holes. Heat dissipation gaps directly connected with the heat sink are arranged between the lower end of the lower end shell and the lamp pole head, a plurality of first heat dissipation through holes are formed in a front end shell body of the lower end shell, a plurality of heat dissipation stripes are arranged on the front face of the heat sink, heat dissipation fins which are distributed in a multiple-row and multiple-column mode are arranged on the back face of the heat sink, third heat dissipation through holes are formed between the rows and columns of the heat dissipation fins, a hollow cavity is formed inside the upper end shell, and a plurality of second heat dissipation through holes are formed in the top end of the hollow cavity. According to the LED street lamp, gap connection of components, design of the heat dissipation holes of the components and arrangement of the heat dissipation fins can achieve the quite good heat dissipation effect through transverse and longitudinal air circulation, and the LED street lamp is simple in structure, long in service life, good in lighting effect and worth widely applying and popularizing to road lighting, and prevents water and dust.

Description

technical field [0001] The invention relates to road lighting technology, in particular to an LED street lamp. Background technique [0002] With the aggravation of the world energy crisis, all countries are seeking solutions to the energy crisis. One is to seek the utilization of new energy and renewable energy; the other is to seek new energy-saving technologies to reduce energy consumption and improve energy utilization efficiency. [0003] Compared with traditional high-pressure sodium lamp street lamps, LED street lamps not only have the characteristics of good chromaticity, maintenance-free, and long life, but more importantly, they are more energy-efficient than traditional street lamps, effectively reducing the energy crisis. Generally speaking, street lamps are located outdoors and are affected by factors such as dust and ambient temperature, making heat dissipation an important factor affecting the life of LED street lamps. As we all know, there are three main wa...

AI Technical Summary

Problems solved by technology

As we all know, there are three main ways of heat transmission: conduction, radiation, and convection. However, most of the existing LED street lights are snake head lights, and the heat dissipation method is mainly radiation heat dissipation, and the heat dissipation effect is not good.

When used for a long time, due to the influence of dust and other external environments, the heat dissipation effect will become worse and worse, so that the heat generated by the LED work will continue to accumulate, and the high temperature will lead to a sharp decrease in its life.

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