Application and standardization of LED traffic lights & LED beacon light
with the rapid development of China's overall economy in recent years, the country has paid more and more attention to people's safety, especially traffic safety is a problem that the national government attaches more importance to. LED traffic lights are the ideal replacement products of traditional traffic lights, with the advantages of easy identification and strong brightness. Therefore, the application of LED road traffic lights has attracted the attention of relevant departments, In the process of application of traffic lights, the fundamental purpose is to ensure road traffic safety. In the streets with large traffic flow, the use of road traffic lights can better ensure the smooth traffic. With the rapid development of LED technology, LED lights have been widely used in China as today's road traffic lights.
In fact, China's road traffic lights from the beginning of the gas lamp to today's light-emitting diode LED, and the main application characteristics of China's current road traffic lights can better ensure that they are not affected by external factors in use, and will not be affected by climate and other issues. However, there are still a series of problems in the application of traditional road traffic lights, which will directly or indirectly affect people's travel safety. Therefore, this paper analyzes and discusses the application of LED road traffic lights and the corresponding standardization system.
1、 LED signal lamp concept
LED is a traditional semiconductor light-emitting device. LED signal lamp is made of LED light source. Traffic signal light is composed of red light, green light and yellow light. Red light means no passing, green light means permission, yellow light means warning. LED traffic signal lamp is used for toll station crossing, directing vehicle passing and ensuring safety. It includes traffic signal lights, traffic signs, traffic markings and the command of traffic police. Unified road traffic signals are implemented throughout the country. Traffic lights play a very important role in the process of transportation, but its light intensity, energy consumption, role and light pollution are also worth further exploration by relevant staff, so as to ensure that traffic lights can play a certain role in the further development of China's transportation.
2、 Led design analysis
LED signal lamp is made of LED light source, which is used for toll gate crossing, directing vehicle passing and ensuring vehicle safety. The appearance of LDE signal lamp is specially designed for LED light source. The structure is ultra-thin and humanized, with beautiful appearance and fine technology, which is convenient for various combination installation. Light transmission design: the outer surface of transparent lens adopts inclined surface design, which is not easy to accumulate dust. Shell material: shell casting aluminum or polycarbonate (PC) material and silicone rubber seal, with dust, waterproof, flame retardant, anti-aging characteristics, long service life. Light source: the light source adopts imported chip four element ultra-high brightness light-emitting diode (LED), with strong brightness, easy to identify, more energy-saving and longer service life compared with traditional materials.
3、 Led features
1. Monochromatic light has divergence angle
In normal use, LED lights can only emit monochromatic light, which can be better used to direct traffic through the combination of auxiliary color chips. The light produced by LED lights also has certain directionality. When the light direction is generated, it will have a certain divergence angle. The use of this lamp can better solve the fantasy and color chip fading problems existing in the application of traditional signal lights, and improve the utilization efficiency of light.
2. Low energy consumption of cold light source
First of all, the light source in the overall use process should be clear is a cold light source, and one of the most significant characteristics is low energy consumption, which is of great significance to the lamps and lanterns used today. In the process of use, due to the low energy consumption of the light source, it has been widely used in today's road traffic lights. With the rapid development of modern science and technology, the use of cold light source promotes the development of lamps or energy utilization. At the same time, under the guidance of national sustainable development strategy, it is imperative to reduce energy consumption by using energy saving.
3. Strong reliability and long service life
The application of road traffic lights in China has been developed for decades. Through research and investigation, the author found that in the work of traditional traffic lights, due to the relatively bad working environment, the signal lamps can not be used for a long time, but led lamps have good characteristics. Compared with the traditional signal lamp, it has a long life and low energy consumption. More importantly, it can work normally in the environment of severe cold and heat, sun and rain, and has high reliability. Therefore, it can be better applied to today's traffic lights. At present, the longest use time of LED signal lights in China has exceeded five years, and there is no production in the process of use Any damage, the service life is as long as 80000 hours, compared with the traditional signal lamp has been significantly improved.
4、 Chromaticity performance of LED road traffic lights
Due to the strict requirements and regulations on the chroma of modern road traffic lights, once a slight error occurs in the production process, it is likely that the chromaticity of mass-produced light source products does not meet the requirements. The internal structure and circuit design of the signal lamp may affect the chromaticity of the signal lamp to a certain extent, resulting in the chromaticity can not meet the system requirements or national standards.
5、 LED road traffic signal light intensity and visual angle performance
Red intensity and visual angle performance are the standards that are strictly controlled by the state in the application process, especially for the light intensity of red signal, but there are no specific provisions for the light intensity of yellow and green signals. In the national road traffic light standard of the people's Republic of China (gb14887-2003), if the red signal can meet the specified light intensity requirements, then the yellow signal The signal light and green signal light can meet the requirements. At present, the light intensity of domestic LED signal lamps can meet the requirements set by the state, and some of them may be due to the serious urban light pollution, the continuous expansion of roads or some external factors. Compared with the national design of light intensity index is low, and not comprehensive.
6、 Economy
At present, incandescent lamps have a shorter service life than incandescent lamps in China, but this is the low maintenance cost of incandescent lamps. The actual light output effect of incandescent lamp increases and decreases in use, while the LED signal lamp has high brightness, pure color, and maintenance free during use. Compared with the two phases, the advantages of LED signal lamp are more prominent. Although there are also many institutions to compare the energy consumption of the lamp source, after the overall comparison, it is found that the use effect of LED lamp is better, and it also saves energy.
7、 Application conclusion
Through the analysis of the feasibility of LED signal lamp application, it is found that led signal light has strong brightness and pure color, and the cost of maintenance and maintenance is relatively low, which has a good practical value. At the same time, under the guidance of China's sustainable development strategy, the application of LED signal light can further reduce the energy consumption of signal light, and improve the level of traffic safety, which is worth further study Step promotion.
8、 Summary
This paper discusses the application and standardization of LED road traffic lights. In the process of overall analysis, it introduces the use characteristics and special effects of LED in detail, and makes a detailed discussion. It also makes a detailed comparison between the light source and other light sources. Compared with other light sources, the member has the advantages of less energy saving and wide application range. It is hoped that through careful analysis of this paper, there are In order to ensure the traffic safety of our country, we hope that through the careful analysis of this paper, we can provide some theoretical knowledge for the use of traffic lights in our country.
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