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What Are The Advantages Of Led Street Lamps Over High Pressure Sodium Lamps?

Mar. 08, 2019

High-power LED street lamps, such as Tool Less LED Street Lights, are the alternative products of high-voltage sodium lamps. They have the following advantages:

First, unidirectional light

The characteristic of LED lamp pole itself -- the unidirectional light, no light diffuse, ensure the light efficiency.

Second, high light efficiency

The Suspended Mounted LED Street Light has a unique secondary optical design, which can illuminate the light of the LED street lamp to the required lighting area, further improving the lighting efficiency.The purpose of energy saving has been achieved.At present, the efficiency of LED light source has reached 100lm/w, and there is still a lot of room for development, the theoretical value of 200lm/w.The luminous efficiency of high pressure sodium lamp increases with the increase of power. Therefore, the overall luminous efficiency of LED street lamp is stronger than that of high pressure sodium lamp.


Third, light color rendering high

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 is above 70. From the perspective of visual psychology, when the same brightness is achieved, the average illumination of LED street lamps will be lower than that of high pressure sodium lamps (with reference to the British road lighting standards).

Fourth, light decline is small

The LED street lamp has a small light decline of less than 3% per year, and its service life still meets the requirements of road lighting. However, the high-voltage sodium lamp has a large light decline, which has decreased by more than 30% in a year. Therefore, the LED street lamp can be designed with lower power than the high-voltage sodium lamp.


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