What are the advantages and disadvantages of led street lamps compared to high-pressure sodium street lamps?

Currently, high-pressure sodium lamps are still the main source of road lighting, and will continue for a long time, but with the development of smart cities, high-pressure sodium lamps will be replaced by energy-saving, efficient, and high-quality led light sources in the near future. What are the advantages and disadvantages of the led light source compared to the high pressure sodium lamp?

In terms of light quality, led light sources are superior to high pressure sodium lamps. Led color temperature of 3000-10000K, color rendering index of 60-95, high-pressure sodium lamp color temperature of 2000-3000K, color rendering index of 20-25, we can see that high pressure sodium lamp color rendering index is low, poor color rendering, led good color rendering. In terms of energy efficiency, the LED light source is superior to the high pressure sodium lamp. High pressure sodium lamp power factor is about 0.42, after installing the capacitor can reach 0.85-0.9, led street lamp power factor ≥ 0.95, no need to install electrolytic capacitors, led lights have a great advantage. In terms of cost, high-pressure sodium lamps are superior to led street lamps. In the future, l should increase investment in research and development of ed street lamps, strive to achieve effective breakthroughs in chip manufacturing, packaging technology, lighting structure optimization design (distribution of light), heat dissipation, etc., and increase policies to support the development of led light sources to make it a road lighting Mainstream light source.

Hefei, Wuhu, Jiaxing, Hongze, Wuning, Guangzhou, Haining, Chicago, Houston, Chile, and other cities all have Shanghai Sansi led street lamps. Shanghai Sansi led street lamps have high luminous efficiency, good energy-saving, safe and reliable, and become domestic and foreign. Road lighting fixtures.