At present, my country is creating a resource-saving and environment-friendly society, and the concept of "green lighting" is gradually gaining popularity. With the continuous advancement of science and technology, the rapid development of semiconductor material application technology, low-power LED light sources have been widely used in landscape lighting, and high-power LED street lights have also attracted more and more attention from all aspects.

LED (Light Emitting Diode), a light-emitting diode, is made of III-IV group compounds. It is a solid-state semiconductor device that can directly convert electricity into light. The heart of the LED is a semiconductor chip. The semiconductor chip is composed of three parts. One part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor. When the current acts on the chip through the wire, the electrons and holes will be pushed into the quantum wells. In the quantum wells, the electrons recombine with the holes and then emit energy in the form of photons. This is the principle of LED light emission. The wavelength of light is also the color of light, which is determined by the material forming the P-N junction.

The high-pressure sodium lamp uses electricity to generate an arc between the electrodes at both ends of the arc tube. Due to the high temperature of the arc, the sodium amalgam in the tube is heated and evaporated into mercury vapor and sodium vapor. The electrons emitted by the cathode impact and discharge during the movement to the anode. The atoms of the substance gain energy to produce ionization or excitation, and then return from the excited state to the ground state; or change from the ionized state to the excited state, and then return to the ground state in an infinite loop. At this time, the excess energy is released in the form of light radiation. Then light is produced.

High-power LED street light is a new type of lighting method that realizes lighting needs by illuminating the LED group by DC low voltage. It has the characteristics of high brightness and good color rendering. In addition, because the input of LED street light is low voltage DC, it can be The combination of solar energy makes solar LED street lights a possibility for road lighting in the future.