What is the best light source for solar street lights

Solar street light, the most suitable light source is energy-saving lamp, sodium lamp, LED lamp or induction lamp? Let's analyze it for you by solar street light manufacturers:

1. In terms of luminous efficiency, these lamps can reach more than 80 lumens per watt, which can be said to be comparable.
2. In terms of service life, LEDs only have the upper hand. In theory, LED chips have a very long life. In practice, the life of LED lamps is not as good as expected due to the drag of light decay and other electronic components. Other light sources have also been improved, and their service life is increasing.
3. In terms of environmental protection, LED still has the advantage. LED lights do not contain toxic substances or UV radiation.
4. As far as the matching of solar power is concerned, LED is a low-voltage power supply, which is the easiest to cooperate with solar power. Other lamp types require a large step-up amplitude, large power conversion losses, and large electromagnetic interference.
5. In terms of price, LED lamps are the most expensive, and sodium lamps are the cheapest.
6. In terms of road light distribution angle and color rendering requirements, sodium lamps are dominant.
7. In terms of mechanical strength and environmental adaptability, LED lights and sodium lights are both excellent.