Tri-proof light refer to three proofs: waterproof, dustproof and anti-corrosion. Special anti-oxidation and anti-corrosion materials and silicone sealing rings are used to meet the protection requirements of lamps. This lamp carries out anti-corrosion, waterproof and anti-oxidation treatment on the circuit control board. According to the characteristics of weak sealing and heat dissipation capacity of the electrical box, the special working circuit of intelligent temperature control three prevention lamp reduces the working temperature of the power frequency converter, and double insulates the strong current isolation protection circuit and connectors to ensure the safety and reliability of the line. According to the actual working environment of the three prevention lamp, the surface of the lamp protection box is treated with nano plastic spraying, moisture-proof and anti-corrosion treatment to prevent the entry of dust and moisture.