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What are the advantages of LED street lamps over high-pressure sodium lamps


High-power LED street lights are an alternative to high […]

High-power LED street lights are an alternative to high-pressure sodium lamps, and have the following advantages:

   One, unidirectional light

   The characteristics of the led sensor lights pole itself---the one-way light, no light diffusion, to ensure the light efficiency.

   Two, high light efficiency

  The led sensor lights has a unique secondary optical design, which irradiates the light of the led sensor lights to the area that needs to be illuminated, and further improves the light efficiency. The goal of 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 high-pressure sodium lamps increases with the increase in power. Therefore, the overall luminous efficiency of led sensor lights is stronger than that of high-pressure sodium lamps.

   Three, high light color rendering

The light 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 is above 70. From the perspective of visual psychology, the brightness of LED street lamps can reach the same brightness. Sodium lamps have been reduced (refer to British road lighting standards.)

  Four, light decay is small

The light decay of led sensor lights is small, less than 3% a year, and still meets the lighting requirements for road use in the year of use, while high-pressure sodium lights have a big decay, which has dropped by more than 30% in about a year, so led sensor lights are in the design of using power The upper can be lower than that of high-pressure sodium lamps.

   5. Energy saving and power saving

   led sensor lights have automatic control energy-saving devices, which can achieve the greatest possible reduction in power and energy saving under the condition of meeting lighting requirements at different times.

   is relatively safe to use. LED is a low-voltage device. The voltage to drive a single LED is a safe voltage. The power of a single LED in the series is 1 watt. Therefore, it is a safer power supply than the use of high-voltage power supplies. It is especially suitable for public places (such as street lighting, Factory and mine lighting, automotive lighting, civil lighting, etc.).
Six, easy to maintain

  Each unit LED chip has only a small volume, so it can be prepared into various shapes of devices, and is suitable for variable environments.

  Combining the above principles, the high-power led sensor lights has a significant energy saving effect, and it can save 60% of electricity instead of high-pressure sodium lamps. Although high-power led sensor lights have many advantages, it is currently difficult to replace high-pressure sodium lamps on a large scale. The main reason is that the quality of led sensor lights is not stable enough and the cost is too high. Nevertheless, led sensor lights have the advantages of energy saving, long theoretical life, and environmental protection lamps. Today, when green and environmental protection are advocated all over the world, they are very dazzling, and they have received great attention and strong support from the government and industry.