Optical system for high-power LED traffic signal light
A technology for traffic signal lights and LED light sources, applied in the field of traffic lights, can solve problems such as non-compliance with traffic signal standards, and achieve the effects of improving average trouble-free working time, convenient manufacturing and constant brightness
Active Publication Date: 2010-11-10
ZHEJIANG FUYANG XINYUAN TRAFFIC ELECTRONICS
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Problems solved by technology
However, when a single high-power LED is used as a light source, how to emit uniform light is a new problem. If it is not uniform light, the appearance of the traffic signal light will appear to be bright in the middle and darker as it goes outward. Compliant with traffic light standards
Method used
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The invention relates to an optical system for a high-power LED traffic signal light, comprising a high-power LED light source, an aspheric concave lens and a Fresnel lens. Lights emitted by the high-power LED light source form disc light spots through the aspheric concave lens to be refracted to the Fresnel lens, and the disc light spots are refracted to be parallel lights through the Fresnel lens to be emitted. According to the technical scheme, the high-power LED light source is combined with a lens optical system, and uniform light processing is carried out for the lights emitted by the high-power LED light source to form a surface light source, thereby the traffic signal light has the characteristics of low energy consumption, large visual angle, constant brightness, convenient manufacture, average faultless working time increase, and the like.
Description
A light system for high-power LED traffic lights technical field The invention belongs to the field of traffic signal lamps, in particular to a light system for high-power LED traffic signal lamps. Background technique In recent years, new materials and new technologies have been continuously applied in the field of road traffic, especially the wide application of light-emitting diodes (LEDs) in the field of road traffic is obvious to all. In 1999, some cities in my country began to try out road traffic lights with LED light sources. The light source of LED road traffic lights is composed of many low-power LEDs, which are arranged in corresponding patterns according to certain rules, so this type of product is a point light source rather than a surface light source. Because the traffic lights in the past are composed of LED arrays composed of series and parallel circuits. Damage to individual LEDs will cause several LED tubes to fail to light. It seriously affects the a...
Claims
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IPC IPC(8): F21S8/00F21V5/04G08G1/095F21Y101/02F21W111/02F21Y115/10
Inventor 陈琳胡立平王军华占晓斌郭敏
Owner ZHEJIANG FUYANG XINYUAN TRAFFIC ELECTRONICS