LED display light pollution due to lack of standards has been outstanding

Since January 28th, the "Shanghai mobile outdoor advertising set technical specification (Draft)" to solicit opinions on the City Greening Bureau official website, the carrier body, ships, airships and other mobile outdoor advertising will not be allowed to set the electronic display screen brightness, advertising lighting should be less than 500cd/ square meters (cd/ square meters to brightness per unit area). The reporter noted that although the standard of mobile advertising has been clear, but shopping malls, building electronic display light pollution problem because of the lack of standards, has been outstanding.

LED light is more dazzling

Huaihai Road, a lot of electronic display like searchlights, too dazzling. "Huaihai Road LED screen has dozens of pieces, from all directions" brush "to pedestrians flicker, the eye is very incommensurate. The taxi driver Wang reflected, a large LED screen above the South Mall, facing the direction of the elevated, night driving on the elevated, often wandered into the light, "light will affect the passing vehicles and pedestrian LOS, distract the driver, it will bring great security risks. Especially for some driving long drivers are more susceptible to interference and influence. "

Shanghai Institute of building engineering construction technology department and Research Institute senior engineer Xie Xiaodong, optical engineer Wu Jianchun served in several Shanghai downtown district were measured. The results showed that the brightness of the LED display screen advertising Xujiahui Pacific Digital Plaza upstairs is 556cd/ square meters; the brightness of Konica Minolta advertising display on CITIC Bank reached 755cd/ M. The brightness of the LED display in the central square of the ASE actually reached 2600cd/ square meters, I Wuning Road on the square lattice electronic display brightness up to 2250cd/ meters. Relative to the specified flow of outdoor advertising in the 500cd/ square meters, electronic display building, the mall walls more dazzling.

When the brightness standard?

It is understood that the installation of the LED screen settings, broadcast content by the relevant departments for approval and supervision, but the brightness, but it is different opinions, there is no uniform standard. What kind of brightness does not cause "light pollution"? There is no uniform provisions.

Assistant Manager of a large shopping center operations manager, said he, in the course of the operation of the LED screen market is also a dilemma. "Because there is no specific standard for LED screen brightness, so the mall can only be based on feedback from the public to adjust, but some people feel bright, some people think that the dark, only to seek a Tastes differ all tastes., relative balance. "

At the green landscape of Shanghai city and City Bureau of the relevant responsible person said in an interview, because the LED screen brightness problems are very flexible, like people watching TV, personal preferences, like outdoor advertising that is fixed to the fixed standard. City green and the city board in the audit of the LED screen, without damage to the naked eye premise, no specific requirements for brightness. Promulgated in 2004, "Shanghai urban environment (decoration) lighting standard" only provides for the traditional outdoor advertising, signs of lighting brightness, does not apply to LED electronic display. However, due to the introduction of the specification of the number of LED display in Shanghai is not much, for the time being, this provision is clearly outdated".

Shanghai Municipal Environmental Protection Bureau official also said that at present there is no relevant laws and regulations to restrict this light pollution, there is no definition of noise pollution, such as the definition of standards, it is difficult to make specific treatment of such complaints. With the promotion and use of large LED screen in the city, the relevant departments should formulate relevant laws and regulations as soon as possible, uniform brightness standards.