Every night, the colorful LED advertising screen is particularly eye-catching. However, on the bright back of the large LED advertising screen, there is also a problem that puzzles the public. Among them, the most outstanding one is the light pollution of the LED full-color screen. It is understood that the device setting and broadcast content of LED full-color screen are reviewed and supervised by relevant departments, but there is no unified specification only in terms of brightness, which has become a “blind spot” of laws and regulations. What is the impact of LED advertising screen light pollution on the public? How to supervise the “light pollution” of LED electronic full color screen? The reporter has carried on the inquiry interview to this.
Citizens > >
Fast changing of LED advertising screen affects driver’s pedestrian attention
“Many led full-color screens in Tianjin are installed at crossroads. It’s OK in the daytime, but after daybreak, due to the dim light around, the LED full-color screen is particularly bright, and the dynamic advertising change is relatively fast, which still has a certain impact on US drivers.” Mr. Sun, a private car owner, told reporters that all the relatively warm business districts in Changchun City have led full-color screens. Because the full-color screens are big and bright after dawn, when the car goes into the neighborhood, its vision is often unconsciously attracted by the screen. “Even if you don’t want to see advertisements, the LED full-color screen programs in the sky in front of you are constantly changing, and the light intensity changes significantly, so you feel particularly eye-catching and sometimes pay attention If you are attracted, you will neglect the change of the traffic lights. Sometimes when you wait for a red light for dozens of seconds, you will be dazzled in front of your eyes. ”
In the interview, many people living in the neighborhood of the business district showed that the broadcast of LED electronic full-color screen programs often continues very late. The residential building is facing the LED full-color screen, even if the distance is tens of meters, the full-color screen light will also affect the interior, “there is no need to have thick shading window cloth, let alone want to go to bed early, that is, when you watch TV at home, you will feel the light and dark outside the window, and it seems that someone is there when it is bright There’s a light in the window. ”
Step by step > >
Led full-color screen throughout Changchun primary business district
In view of the situation reflected by the public, the reporter conducted a step inspection and found that there are two or three large-scale led full-color screens in Chongqing Road, Guilin road, Hongqi Street and other major business districts in Changchun City. The working hours are usually from 8 a.m. to 9 p.m. in the dark. It seems that the brightness is still relatively suitable in the daytime, but with the coming of night, the LED full-color screen without brightness control seems to be a little dazzling. The reporter conducted a random interview on the street. A passenger of bus No.80 humorously said that he was used to dozing when taking the bus, but he never worried about passing the bus stop, that is, because of the existence of LED full-color screen. “The full-color screen light at the intersection is very bright, especially at night. I fell asleep in the car. When I passed the intersection, I could feel the light in front of me with my eyes closed. I woke up in an instant and got off when I passed the intersection.”
Doctor > >
The strong light of LED full color screen at night has certain damage to cornea
What kind of impact will the glare of LED full-color display have on drivers, pedestrians or nearby residents? In the interview, an ophthalmologist who refused to disclose his name showed that everyone’s sensitivity to light is different, so they feel different about the light of LED full-color screen. However, the strong light at night may cause corneal damage, which may lead to fear of light, tears, tingling and other feelings. Together, the expert also showed that light pollution can interfere with the central nervous system of the human brain, resulting in neurasthenia, which makes people dizzy, insomnia, physical fatigue, and so on. It also causes vision loss. The incidence rate of cataract caused by light pollution is as high as 45%. If the ultraviolet light that is generated by these strong light for a long time, it will also cause blood pressure to increase and even cause other diseases.
Handling > >
LED full color display does not need EIA now
During the interview, the reporter also learned that light pollution is generally divided into three categories in the world, namely white light pollution, artificial daytime pollution and color light pollution. At present, China only has relevant regulations on glass curtain walls in white light pollution, but there are no relevant regulations on artificial daytime and color light pollution. However, some experts have pointed out that people’s eyes are also very sensitive to color light. When LED full-color screens broadcast different advertisements with the same frequency, some advertisements may give people eye-catching feelings and cause people’s mood and psychological discomfort, which should be attributed to light pollution. At present, China has no clear laws and regulations on the management of light pollution, so it is difficult to deal with such complaints. The relevant staff of Changchun Environmental Protection Bureau also indicated that the LED full-color screen installation in Changchun does not need to pass the EIA of environmental protection department, and Jilin Province and Changchun City have no relevant laws and regulations for light pollution.