[Deep Analysis] Development and Application of LED Street Lights

Traditional light source high-pressure sodium lamps and some metal halide lamps have long played a leading role in road lighting. In recent years, domestic LED lighting applications have developed rapidly, and many manufacturers have successively introduced high-power LED street lamps, and more and more energy-saving products are used in road lighting. This article makes a rough discussion on several issues in the development and application of road lighting LED street lamps.

1. As a kind of semiconductor luminescent material, LED is more and more concerned with other luminescent materials because of its advantages of green, high efficiency, reliability and durability. With the continuous development of semiconductor technology, the application of LED can be said to be everywhere. In particular, the acquisition of white light, the improvement of efficiency, life, stability and other performance and the continuous reduction of cost have further expanded the application field of LED light source. In recent years, LED has achieved certain success in the field of landscape lighting. The development and development of LED street lamps has opened up a broader world. Compared with traditional light sources, LEDs have outstanding advantages in terms of color rendering, energy saving, longevity and digital controllability. We believe that LED light sources also have good development prospects in the field of road lighting after gradually solving a series of key technical problems such as heat dissipation and light decay, and achieving a significant reduction in cost. At present, hundreds of companies have invested in the development of LED street lamps at home and abroad, and some of them have been put into mass production. Recently, the Ministry of Science and Technology of China has organized and implemented the “Ten Cities and Ten Thousand Cities” program, which has received positive responses from all over the country, creating a huge LED street lamp market, and some pilot demonstrations at home and abroad are also in full swing.

2. Provide a display platform for high-power LED street lamps

In recent years, domestic LED lighting applications have developed rapidly, and many manufacturers have successively introduced high-power LED street lamps, and more and more energy-saving products are used in road lighting. In order to implement the decision of the State Council on energy conservation and emission reduction and the green lighting plan of the Ministry of Construction, Tianjin City will ensure the standardization, serialization and generalization of road lighting in Tianjin, and use the time and quality of LED road lighting products to develop a The LED road lighting products manufactured by the production enterprises will conduct performance testing and evaluation work, and provide qualified facilities manufacturing suppliers for road lighting construction in Tianjin in the future to ensure high-level construction and high-efficiency operation of Tianjin road lighting facilities. In order to reflect the seriousness and transparency of testing and evaluation, it was organized by the Tianjin Lighting Association, and was implemented with the Tianjin Product Quality Supervision and Testing Technology Research Institute and the Tianjin Street Light Management Department.

According to the "Tianjin Downtown Urban Lighting Plan" (2008-2020) and "Tianjin Downtown Urban Lighting Plan - Road Lighting Special", the production equipment of the participating equipment should provide 10 sets of the same style lamps according to the road conditions for testing. The power of the illumination source tested and evaluated is about 150W; according to the Urban Road Lighting Design Standard, the color temperature is about 4500K. The installation height and spacing of the facilities shall be performed in accordance with the conditions of the test site, and shall be fair, reasonable and the same conditions. In view of the requirements for road lighting safety, the facilities are uniformly implemented by the street lighting management department during the initial installation.

In the one-year period of test evaluation, according to relevant standards, 12 data tests such as road average illumination Eav and uniformity UE test are carried out, and the lamp input power test, lamp power factor test, light efficiency test, and lamp light distribution curve are also performed. Test, color temperature, color coordinates, chromaticity tolerance, color rendering index and other color characteristics test, low-voltage line harmonic content, grounding measures and dielectric strength and luminaire IP rating test. Also evaluate the light fade and visual effects.

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