LED street light compared with the traditional high pressure sodium lamp have what disadvantages

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as a response to the call of the national energy conservation and emissions reduction, more and more highway has the old street lamp ( High pressure sodium lamp) Change to LED lights, from yellow to white light, intensity of illumination higher street lamp seems to be more bright, the pavement according to the driving at night also seems to be more secure, really?

LED street lamp to replace the traditional high pressure sodium lamp is the trend of The Times, but in terms of the current practical experience effect, LED street lamp is not victory, in many ways, instead, LED lights have more disadvantage.

a, glare

installation height higher LED street light glare instead of feeling is not very strong. But low LED street lamp installation, close to the street lamp irradiation range, dazzling sense will be obvious, out of the irradiation range, and there will be a black eye. And high pressure sodium lamp lighting range far no such distinct feeling.

2, color rendering index

LED lights have a higher intensity of illumination, according to the road of brighter, but in such a low color TPS source in their way, to the naked eye feel of all the objects are white, and the differences between objects and pavement become smaller. Under the LED street lamp, a lot of the stones on the road we cannot accurately distinguish with the pavement.

in addition, due to the LED street lamp without reflector lamp bowl, and the light is more, the actual shining light is scattered, give a person a kind of light and the feeling of concentration. And high pressure sodium lamp, on the other hand, due to the light reflection bowl, light but more concentrated.

3, the penetration ability of fog had

although there are a large amount of data to prove the LED street light penetration is better than high pressure sodium lamp, but the reality is, in the fog had, especially in the heavy fog weather, high pressure sodium lamp, we could see more clearly. LED lights on brightness advantage, but in the vast expanse of whiteness I can only feel in the haze. Brightness is enough, but could not tell anything.

4, light stability,

the domestic LED street light will appear high-frequency flickering phenomenon, such as standing under the street light, the body feeling distinctly syncope, seriously affects drivers and passers-by vision, a traffic safety hidden trouble. In addition, many LED lights on the road as the lengthen of time, intensity of illumination has certain recession phenomenon, that is to say, the in the dark.

5, LED street light prices high

LED street lamp is ~ times that of the traditional street lamp, the high cost.

everything has good and bad, there is no absolute good or bad. LED lights are in a process of constant evolution, with the advancement of energy conservation and emissions reduction, LED street lamp fully replace high pressure sodium lamp is just a matter of time.