Domestic high pressure sodium lamp because of quality and technical problems life is short, generally less than 3000 hours, philips philips production of high-voltage sodium lamp is the best in the import, but life also is 3000 - 4000 hours. Monomer led more than 40000 hours, the life of a cluster of super-large work
because of quality and technical problems, short service life of domestic high pressure sodium lamp, generally no more than 3000 hours. Philips production the best imported high pressure sodium lamp, but only 3000 - service life 4000 hours. A single led the life of more than 40000 hours, composed of clusters of super power led life over 30000 hours, is currently the best high pressure sodium lamp life cycle of more than 5 times. That is to say, high pressure sodium lamp need to replace more than five times, and led street lamp only need to change again. Have a special meaning for street lamps, it is difficult to change, so I need some manpower and resources to complete the machine. The most obvious is cost and maintenance cost to replace the light source and the resulting inconvenience. Led street lamp manufacturers, while the led street lamp to replace the traditional street lamp, don't need a telephone pole, village street lamp installation and maintenance cost, but the led street lamp in laying cost saving the cost of the light source. Save electricity is profit after use, and the service life of the respective advantages and disadvantages. The longer the installation path, led street light the greater cost savings.