LED screen is too bright to be set to cover the Shanghai magic"

With the appearance of the various values of the LED display like sprung up in Shanghai, the night was dressed up more and more beautiful. It was reflected in the morning paper, some of the electronic display bright glare, and even light pollution, affecting the safety of driving at night.

In this regard, Shanghai Landscaping Bureau of landscape management department official said that at present only the provisions of the relevant norms of traditional lighting brightness, outdoor advertising signs, is not suitable for LED electronic display, but recently the relevant provisions of the forthcoming.

Field measurement:

The most bright LED screen super light box 130 times

From the Shanghai Institute of building engineering construction technology department and Research Institute senior engineer Xie Xiaodong, Wu Jianchun optical engineers drove together looking for LED display center. In Xujiahui District, the top row upon row of mostly on the LED display, Ambilight night.

Wu Jianchun took a look like small camera XYL-V brightness meter, several of them to display brightness measurement: Canon advertising display Pacific Digital Plaza upstairs is 556cd/ square meters (cd/ square meters to brightness per unit area); Shanghai six hundred SHARP advertising display screen brightness of 439cd/ square meters; ruckus hallmark tires advertising display brightness Valencia Hotel the 499cd/ square meters; brightness Konica Minolta advertising display of CITIC Bank on higher, up to 755cd/ meters. Compared with the electronic display screen, Meiluocheng "big ball" is quite moderate, brightness just over 10cd/ square meters.

However, compared with the LED display Dapuqiao ASE center square, Xujiahui, the electronic display can be described as pale into insignificance by comparison. The measurement of luminance meter, the light brightness of this screen actually reached 2600cd/ M. Reporters looked around, Dapuqiao District in the highest brightness of this display, light box advertising from a hotel not far from the center of ASE, brightness of 20cd/ square meters, only display 1/130 ase. Wuning Road, I square on the electronic display is also quite eye-catching, even a few hundred meters away from the screen display advertising content is also clearly visible. The measurement showed that the brightness of the display is also up to 2250cd/ square meters. The brightness of these displays is really high, much higher than the average office brightness. "Wu Jianchun explained that, in general, the brightness of ordinary office less than 100cd/ square meters, otherwise it will make people feel uncomfortable.

The total measured central 11 LED display, more than 10 square meters in area, according to the urban environment in Shanghai city in 2004 the implementation of the "standards" (decoration) lighting, commercial advertising light boxes, signs of an area of more than 10 square meters, the maximum brightness should not exceed 400cd/ square meters. According to this standard, there are 7 screen brightness over".

Doctor view:

Staring at the glare of the eye injury

In 11 electronic display measurement, LED display the highest brightness is advanced on the square. The day before yesterday evening, this screen constantly play fashion show, attracted many passers-by watch. A standing on the roadside to watch the lady said: "this screen is very clear, it seems like the LCD tv. "

However, not all passers-by are fond of bright screen. "It was so dazzling that when I opened it, it was almost over my eyes. A driver passing by here, told reporters that this electronic display is as bright as searchlights, every time he passed the bridge will be particularly careful when shopping district. "Especially in the evening, LED display will make the blurred vision, especially when the blue light flash on the screen, the rearview mirror is blue, what can not see, there is indeed a security risk!" for the LED advertising screen, a taxi driver's opinion.

Director of Ophthalmology excimer laser in the Tenth People's Hospital of Yu Jing said, too bright LED screen may bring two damage to the human eye, one is when the human eye by high brightness glare stimulation, eye pupil, eyes will obviously feel uncomfortable, the other is the screen flashing light, the frequency is too high, will cause serious effect of macular retina, long-term damage and even lead to macular degeneration, especially the elderly and children, so that they do not always stare at the screen, there is definitely a damage to the eyes. "

Advertisers secret:

The screen is getting brighter and brighter

ASE Center Plaza project at Mr. Gao said, ASE Center for Xujiahui road LED screen area of about 392 square meters. "I feel the brightness is appropriate. Mr. Gao said, this LED large screen is strictly in accordance with the standards of production and operation, and now the brightness of the screen has not been transferred to the highest, and every night at the end of 10 will automatically shut down. In his view, this brightness did not bring much impact to local residents and drivers. Peer competition objectively let LED screen more and more bright, more and more. "An advertising insiders explained that the LED display is expensive, but now many commercial plaza, do not need to pay with LED display themselves, but by the advertising expense, after advertising companies will regularly to commercial, square pay, in this context, commercial plaza, on the LED screen to of course welcome in the city more and more in the LED screen. On the other hand, in order to attract attention, advertisers also require advertising when playing flash, bright, jump ", so the LED screen will adjust the more light, to cause light pollution.

Shanghai: LED advertising screen will be included in the regulation

city