At present, the high-pressure sodium lamp and low-pressure sodium lamp commonly used in the public power street lamp industry in China, the reason why they choose to use sodium lamp is because they have the characteristics of high luminous efficiency and long life. Take the high-pressure sodium lamp as an example: the luminous efficiency is 120lm/w, and the average life can reach 2 years. However, it also has its own significant drawbacks, that is, the color temperature (K=1900/2200/2500) is too low, and the color rendering index (Ra=23/60) is too bad. In order to solve the problem that the color temperature of the high-pressure sodium lamp is low and the color of the light is severely reddish, the commonly used method is to increase the power and let the power reach 250-400W with a large amount of luminous flux to compensate for the problem of color cast of the object. The average illuminance value required by the national standard JT/T367--1997 "Technical Conditions for Highway Lighting" is mostly at 15LX and does not require high luminous flux. That is to say, in many cases, it is not necessary to use such a high-power, high-value light flux sodium lamp to illuminate, but because of the low luminous flux, all objects will be heavily discolored under the lamp and generally yellowish.

        The LED street lamp produced by our company is a new type of light source with a theoretical life of more than 50,000 hours, which can be used for almost 10 years, although its luminous efficacy is lower than that of sodium lamp. However, its color temperature is much higher than that of sodium lamp. The color temperature of super bright white LED can reach 15000K, the color rendering index is close to 100, and the specific values such as color temperature can be adjusted as needed, which can choose a range that is more suitable for human eyes. Manufacture products of varying sizes. Under the condition that the color temperature is suitable, the illumination lamp with LED as the light source shows a slight illuminance, but the light color is bright and the color rendering index is high.

        At present, LED has a unique advantage as the core component of the illumination source, that is, the LED light-emitting chip belongs to the solid-state light-emitting device, which has good stability and is not affected by the external environment temperature. . Compared with high-pressure sodium lamps or metal halide lamps, energy-saving lamps and other gas-emitting light sources, it is more suitable for use in natural environments with low ambient temperature in the north and large temperature changes in different seasons.

        This means that, also meeting the lighting requirements of the national standard, the use of LED light source can greatly reduce the power of the illuminator, and at the same time can greatly reduce the power consumption, so The country will vigorously promote the widespread use of LED products. In order to adapt to the rapid growth of LED demand in the market, China has focused on the development of LED as one of the "31 countries encouraged to develop electronic products" and "20 kinds of electronic products and technologies that encourage foreign investment." At present, in the domestic market, LED as an illumination source has increasingly shown its unique advantages, and has begun to spread in many cities in China.