The scientific lighting of the city at night can not only beautify the city's appearance, establish the image of the city, but also ensure the safety and convenience of people's lives, and prolong the time of economic activities, which is necessary for the modernization of the city. At present, there are many products available for urban night lighting, from high-pressure sodium lamps commonly used in road lighting, to metal halide lamps used in stadiums and leisure square floodlights, to fluorescent lamps, neon lights and LEDs for architectural decoration. The performance is constantly improving, but inevitably there are problems of one kind or another to be solved. For example, the low color rendering performance of the sodium lamp, the spectrum is too concentrated in the yellow area. Under the brightness condition of night illumination, the middle vision of the human eye dominates the vision. Although its light effect is very high, the effect of illumination is debatable; the metal halide lamp is light. Both performance and color rendering performance are good, but it has not been satisfactory in terms of performance stability. It takes a certain amount of time to achieve maximum brightness like high-pressure sodium lamps. Hot start is very difficult; fluorescent light, neon light low-pressure light source The power is not big, on the other hand, the volume is too large, and there is a problem with the cooperation of the lamps. The common problem with all these light sources as urban night illumination is that they do not last long, which is very serious in night lighting. Not only does the cost of the light source increase, we know that most of the light sources in night lighting are installed at a high position, and the replacement and maintenance costs are also quite high. Therefore, the speciality of urban night lighting requires that the light source not only have good photoelectricity. Performance, but also requires that its life must be long enough. The electrodeless lamp meets this requirement. Below we will introduce the principle of LVD induction induction lamp and its superiority for urban night illumination. 1. The superiority of LVD induction induction lamp in urban night illumination LVD induction induction lamp has high luminous efficiency, high color rendering performance, high power factor, long life, dimming, etc., so it can be widely used in urban night lighting. Its superiority is mainly reflected in the following aspects: 1.1 High light efficiency The LVD type electromagnetic induction lamp has already formed a series of products from 20 to 200W, and its light efficiency reaches 80 lm/W or more, so it can be adapted to various places for urban night illumination. From the floodlighting of buildings to the decorative lighting of the city; from signal and indicator lighting to the lighting of roads and streets; LVD-type electromagnetic induction lamps can play a major role, not only to meet the illumination requirements, but also to save a lot of energy. 1.2 Good color rendering performance LVD type electromagnetic induction lamp can achieve more than 80 color rendering performance, so it is a high-quality illumination source in urban night illumination. It can be applied to some places with high requirements on lighting quality, such as stage and stadium. 1.3 High power factor The power factor of the LVD electromagnetic induction lamp can reach 0.95 or more, which can greatly reduce the influence of the light source on the power grid. Night lighting often requires a large number of lighting sources, and high power factor can reduce the pressure on the grid. 1.4 Long life Since the LVD type induction electrodeless fluorescent lamp has no electrode, there is no possibility that the lamp life is terminated due to electrode splashing or failure, so it has an extremely long life which is unmatched by a conventional light source, and can usually be used for 10 to 15 years. This is another great advantage that it can be used in urban night lighting. Long life not only reduces the economic loss caused by lamp damage, but also greatly reduces the cost of maintenance and replacement, which is particularly prominent in the outdoor. At the same time, long life can reduce the loss of lamp materials, reduce the pollution of lamp waste to the environment, and meet the requirements of green environmental protection. 1.5 Hg low pollution Since the LVD type induction electrodeless fluorescent lamp uses amalgam instead of directly filling the liquid mercury, it greatly reduces the mercury pollution in the production process, and its long working life makes the actual application of mercury consumption and waste. The number of light sources is greatly reduced compared to fluorescent lamps, thereby effectively reducing mercury pollution to the environment. 1.6 Low electromagnetic interference Because the LVD type induction electrodeless fluorescent lamp uses electromagnetic waves with a frequency of 250 kHz, and is equipped with a specially designed metal shielding structure and anti-interference electronic circuit, it meets the international requirements for low electromagnetic interference in terms of EMC and EMI performance. . 1.7 Novel and beautiful appearance Depending on the environment and requirements, the appearance of the illuminator of the LVD-type induction electrodeless fluorescent lamp can be made into different shapes to suit various types of application lamps, so as to achieve a novel and beautiful appearance and practical purpose. 1.8 Excellent dimming performance LVD-type induction electrodeless fluorescent lamps have good dimming performance, which is of great significance for indoor lighting, urban night lighting and road lighting. Generally, with the natural lighting changes of indoor lighting during the day and the reduction of people's activities of late night outdoor lighting, the lighting should change the brightness of the lighting accordingly, and the LVD type induction electrodeless fluorescent lamp has a range of 30% to 100% of its rated power. The good dimming performance that can work stably meets this requirement. This not only saves energy but also reduces light pollution.