1. Different raw material process. As the manufacturers' patent awareness is not strong, innovative enough, industry price war led to manufacturers continue to reduce costs in materials, processes and other aspects, which brings to the quality of LED street lights

This has a major impact on the quality of LED street lights, often see the street lights dark after a period of time.

2. The overall price of poor quality led street lights is higher than that of high quality led street lights. Due to the easy damage, LED street lights need to be taken off and transported back to the factory for various tests. This is difficult to install and even more difficult to maintain for LED street lights such as outdoor high level installations, for street light For managers, the inconsistent quality of the product makes maintenance costs climb high.

3. Poor design of the light distribution system of street lights

　　In terms of optical design, if the light distribution system of a street light is not designed properly, the lighting effect will not be satisfactory. In the test, there will be "bright under the light", "dark under the light", "zebra crossing", "uneven illumination", "yellow circle" and other problems. "Yellow circles" and other problems.

4. The problem of the life of the light source in the luminaire. Most materials in the luminaire need to be carried out to affect the life of the light source, so that the warranty period is different.

5. Power supply failure. Drive power supply, if the power supply failure, test and inspection process, there will be "the whole light off", "part of the damage", "individual LED lamp beads dead light", "the whole light flickers false light". The phenomenon of "the whole light flashing false light".

6. Safety faults. Safety problems also deserve serious attention: street lamp power supply without leakage protection; street lamp ballast quality to substandard; circuit breaker without sensitivity check test, rated breaking current selection is too large; the use of cable metal sheath for PE total trunking process complex, low reliability; IP waterproof and dustproof level is too low.

7. Poor thermal design. Thermal design, the PN junction temperature of the LED chip every 10 degrees higher, the life of the semiconductor device will be multiply decreasing. Due to the high brightness requirements of LED street lights, the use of harsh environment, if the thermal solution is not good, will quickly lead to LED aging, stability is reduced.