LED (light emitting diode) light engine for reducing glare of LED street lamp

Abstract

The invention provides an LED (light emitting diode) light engine for reducing glare of an LED street lamp. The LED light engine is formed by assembling a base flange, a spring washer, a fastening nut, a metal hose, an LED light source and a matched optical lens, and a lens capable of finely adjusting an angle of a projection beam, wherein the metal hose is fixedly welded onto the base flange; the LED light source and matched optical lens are arranged in an integral end part of the metal hose such that an solid angle of the projection beam of the LED light source can be finely adjusted between 5 to 17 DEG. According to the LED light engine disclosed by the invention, adjustable light distribution of the street lamp can be realized, the street lamps with the same model can adapt to different lamp-post heights and can obtain more uniform road surface luminance; moreover, the LED light engine can be conveniently maintained, and replacement cost of an integral LED array module can be reduced.

Description

technical field [0001] The invention relates to a lamp, in particular to an LED light engine for reducing the glare of an LED street lamp. Background technique [0002] Street lamps have changed from the first generation of incandescent lamps, the second generation of low-pressure fluorescent lamps, to the third generation of high-pressure discharge lamps that are still the mainstream of street lamps, and the fourth generation is the ascendant LED street lamps. [0003] The speed of improvement of LED lighting efficiency is quite astonishing. In 2008, few LED light sources available in the Chinese market could reach 100 lumens per watt, and most of them were 50 to 80 lumens per watt. By 2010, Laboratory results have exceeded 200 lumens per watt. In 2011, industrial mass production of LEDs was more than 100 lumens per watt. It is predicted that by 2015, a large number of LEDs will be on the market will exceed 200 lumens. From the perspective of the global environmental protec...

AI Technical Summary

Problems solved by technology

[0004] One is that the LED street lights decay too much. In the first year, many LED street lights were taken down because they were too dark.

The second is that the reliability of LED street lights is poor. After a thunderstorm, the LED street lights of the whole road often fail to light up. It is not uncommon for LED street lights to fail in hot weather and to freeze in heavy snow.

The third is the serious glare of LED street lights. Many drivers complained that the LED street lights are bright and bright, which makes the driver's eyes tearful and dizzy.

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