Light, the lamps and lanterns of the light source used

20 meters high lamp, for example, 20 meters high lamp is equipped with at least 12 lamps of 400 w light source to achieve a good lighting effect. Many people say LED lamps save electricity, high pressure sodium lamp demanding, but otherwise, save electricity or not depends on the power, the 400 w leds and power of 400 w high pressure sodium lamp is the same, degree of power, of course, also the same. Outdoor light, for one, want to take small power LED to replace the high power high pressure sodium lamp is almost a fable, due to its foundation can't satisfy the dozens of meters high lift high lamp lighting conditions. Followed by light efficiency, high pressure sodium lamp and metal halide lamp and a larger strengths, that is the penetration of fog is very strong, friends may have thought carefully, car fog lamps used in the metal halide lamp and sodium lamp light source. Most high lamp installed in a large square or high-speed mouth corners, in the fog, good lighting effect can make many drop in traffic accidents. So high pressure sodium lamp and metal halide lights is the two little strength is enough to place lighting market, will not be LED products easy to replace.