The warranty period of outdoor lighting projects and lamps is generally two years, which is far from the 100,000 hours (about five years) stated in the lamp description. This is also the reason why many lighting engineering customers request the extension of the warranty period.

　　1. In lighting engineering, it is very common that there is a gap between the service life of the lamp and the expected service life. How long is the difference? Only according to the matching of different light sources and electrical appliances and the combination of lamps can the basic service life of the lamps be preliminarily determined. However, the service life of lamps in lighting engineering is affected by many factors.

　　2. The lighting engineering company should truthfully explain to the owner. The service life of lamps advertised by lamp manufacturers can be regarded as the relative service life of lamps under certain conditions, and the service life of lamps in lighting engineering is affected by many factors, and it can also be regarded as the relative use of lamps under certain conditions. life.

　　3. The whole problem cannot be seen solely from the gap between the service life of lamps and corporate publicity. In the lighting design plan, the reasonable arrangement of lamps, the reasonable design of the circuit, the selection of the lighting source, the installation of the lighting, the maintenance of the lighting, the circuit layout, maintenance and protection of the lighting system, etc. They are all factors that affect the service life of lamps. In order to extend the life of lamps and lanterns, the lighting engineering company must do the above three points and each link in order to achieve the desired effect.