LED street light is an alternative to high pressure sodium lamps, which has the following advantages:
1. Unidirectional lightness. The characteristics of the LED street light bar itself - the unidirectional nature of light, without the diffusion of light, to ensure light efficiency.
2. Strong light efficiency. The LED street light has a unique secondary optical design that illuminates the area of the LED street light to the desired illumination area, further improving the illumination efficiency. Energy saving has been achieved. At present, the light source efficiency of LED has reached 100lm/w, and there is still a lot of room for development, the theoretical value reaches 200lm/w. The luminous efficiency of the high-pressure sodium lamp increases with the increase of power. Therefore, the overall luminous efficacy LED street lamp is stronger than the high-pressure sodium lamp.
3. High color rendering. The color rendering of LED street lamps is much higher than that of high-pressure sodium lamps. The color rendering index of high-pressure sodium lamps is only about 23, while the color rendering index of LED street lamps reaches 7 or more. From the perspective of visual psychology, the same brightness is achieved, and the illumination of LED street lamps can be higher than the high voltage. The sodium lamp is reduced by more than %.
4. Light decay is small. The light decay of LED street lights is small, and the high-pressure sodium light decays, which has dropped by more than one year in a year or so. Therefore, LED street lights can be designed to use lower power than high-pressure sodium lamps.
5. Energy saving. LED street lights have automatic control energy-saving devices, which can achieve the maximum possible power reduction and save energy when meeting the lighting requirements of different time periods.
6. Use is relatively safe. LEDs are low-voltage devices that drive a single LED with a safe voltage. The series has a single power of 1 watt, so it is a safer power source than a high-voltage power supply, making it ideal for use in public places.
7. Easy to maintain. Each unit LED chip has a small volume, so it can be fabricated into a variety of shapes and suitable for a variable environment.
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