LED display flashing a flash

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. Some readers reflect, some electronic display dazzling, and even light pollution, affecting the safety of driving at night. The day before, journalists and two engineers of Shanghai construction institute took the luminance meter to measure the urban 11 LED display, found the brightest display brightness is more than 130 times near the lamp box billboard. Shanghai Landscaping Bureau 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.

Doctor: staring at the glare

In particular, in the evening, the big LED screen will make the line of sight blur, especially when the screen flashing blue light, the rearview mirror is a blue, what can not see, there are security risks. "A taxi driver has a good opinion.

Director of Ophthalmology excimer laser in the Tenth People's Hospital of Yu Jing told reporters, the high brightness 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 produce effect of macular retina, macular degeneration and even lead to long-term damage.

Advertisers: to attract eyeballs

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. 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.

LED advertising screen will be included in the regulation

Shanghai City Bureau of landscaping and urban landscape relevant responsible person said in an interview, there is no relevant LED display brightness standards. 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. The official said, shortly after this embarrassing situation will be broken. This reporter has learned that the recent Shanghai city environment (decoration) lighting standard is expected to introduce a revised version of the revised version of the LED display will require brightness standards. Currently, the revised draft has been initially developed. According to reports, after the introduction of the revised version, the brightness of the screen will take management measures. Before the introduction of the standard, the impact on the normal life of the public display, the management will coordinate settings to reduce the brightness, reduce the strobe, shorten the opening time, etc..