Outward radiation LED street lamp

Abstract

The invention discloses an outward radiation LED street lamp. In the lamp, first and second groups of radiating fins are vertically arranged on an upper surface of an upper lamp shell, a heat-transferring substrate is formed on a lower end face of the upper lamp shell, heat-conducting substrates of LED light source modules are fixed on the lower end face of the heat-transferring substrate, the lower lamp shell is matched with the bottom of the upper lamp shell, the periphery of a transparent lamp shade is fixedly arranged in the lower lamp shell, the lower end of a reflector is formed with a turn-up and is covered on the periphery of the transparent lamp shade with upside down, the reflector is provided with mounting holes matched with the LED light source modules in number, the LED lightsource modules are positioned in corresponding mounting holes, light distribution lenses are sealed and arranged in the mounting holes, a sealing ring is arranged in a groove arranged on the reflector, and the mounting holes are in the sealing ring. The first and second groups of radiating fins are integrally formed on the upper surface of the lamp shell, so the structural complexity of the lamp is reduced and the stability and reliability of the lamp are improved; and the vertical arrangement of the first and second radiating fins increases cross-ventilation, improves the radiation performance of the lamp and prolongs the service life of the lamp.

Description

technical field [0001] The invention relates to a lamp for road lighting, specifically an LED street lamp with external heat dissipation. Background technique [0002] With the increasing shortage of energy sources, LED lighting fixtures will be widely used. In recent years, the energy-saving performance of LEDs has been recognized, and its technology is still improving, but the heat dissipation problem of LEDs is also a factor that restricts its development for a long time. A variety of solutions have been formed, but they all have certain limitations. For example, the cooling effect of active cooling is better, but it increases the complexity of the lamps and reduces the stability and reliability. Once the cooling device fails and is not repaired in time, it will lead to The LED chip is damaged due to overheating, and the stability of the passive cooling lamp is better, but the radiator is large in size and heavy in weight. Contents of the invention [0003] In order to...

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Problems solved by technology

[0002] With the increasing shortage of energy sources, LED lighting fixtures will be widely used. In recent years, the energy-saving performance of LEDs has been recognized, and its technology is still improving, but the heat dissipation problem of LEDs is also a long-term factor restricting its development. A variety of solutions have been formed, but they all have certain limitations. For example, the cooling effect of active cooling is better, but it increases the complexity of the lamps and reduces the stability and reliability. Once the cooling device fails and is not repaired in time, it will lead to The LED chip is damaged due to overheating, and the stability of the passive cooling lamp is better, but the radiator is large in size and heavy in weight.

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