Comparison of high pressure sodium lamp and LED lamp in tunnel
Of course, the power is less than LED high pressure sodium lamp, but the tunnel environment is complex, because of poor air circulation, a large number of exhaust gas expansion accumulation, light propagation ability was significantly inhibited, high pressure sodium lamp can emit yellow light penetration better (anti fog light), to ensure the safety of passing vehicles.
LED warm light, can also solve the problem of penetrating. Only LED lamp one-time investment larger.
Despite the use effect is not that LED's initial investment is much larger than the sodium lamp, the maintenance procedures and later also a lot more than the sodium lamp, said lamp, sodium lamp if bad trigger change triggers, bad bulb will change the bulb, but not to the LED street lamp, road lamp down at the back repair, very troublesome, speaking of which, probably a little idea.
