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On December 24, the reporter learned from the Chengdu Urban Management Bureau that in October this year, the Urban Management Bureau began to rectify the illegal LED billboards. All unapproved LED billboards will be dismantled, and the special rectification will continue until January next year.
It is reported that at present, Chengdu has only approved a number of legal LED display screens, which are generally large-scale LED screens, such as the display screens located in Panda Plaza, People's South Road Aerospace Building, and City Heart.
Su Jiang, a staff member of Jinjiang District Urban Management Bureau, told reporters that some LED billboards on the street are close to traffic lights. At night, some displays are very like traffic lights. The driver mistakenly believes that it is a green light to drive, which is very likely to cause traffic accidents. In addition, the light pollution caused by LED lights has become a city's ills, and its materials are new materials, which definitely have an impact on the environment.
These displays are used to publish major decisions, major information, emergency information, etc., and are a category in the construction of emergency platforms. “Except for the approval of LED displays in individual public places, everything else is illegal.â€
How much harm does light pollution have? "The brightness of the sun is 2000CD (CD is the brightness parameter). If the brightness is more than twice the brightness of the sun, the human eye will be uncomfortable when looking directly. At present, the brightness of the LED display on the domestic market is generally set at 5000CD or even Higher. In some European and American countries, the brightness of outdoor displays exceeding 5000CD is defined as light pollution and will be prosecuted by the local government."
"Light pollution" sometimes brings derivative damage. For example, the reflected light of the glass curtain wall is stronger and more glaring than the sunlight, which causes the ambient temperature to rise by an average of 4 to 6 degrees Celsius, causing a heat island effect. The results of the study also show that "light pollution" is likely to cause damage to the cornea and iris of the human eye, causing visual fatigue and decreased vision.
It is reported that at present, Chengdu has only approved a number of legal LED display screens, which are generally large-scale LED screens, such as the display screens located in Panda Plaza, People's South Road Aerospace Building, and City Heart.
Su Jiang, a staff member of Jinjiang District Urban Management Bureau, told reporters that some LED billboards on the street are close to traffic lights. At night, some displays are very like traffic lights. The driver mistakenly believes that it is a green light to drive, which is very likely to cause traffic accidents. In addition, the light pollution caused by LED lights has become a city's ills, and its materials are new materials, which definitely have an impact on the environment.
These displays are used to publish major decisions, major information, emergency information, etc., and are a category in the construction of emergency platforms. “Except for the approval of LED displays in individual public places, everything else is illegal.â€
How much harm does light pollution have? "The brightness of the sun is 2000CD (CD is the brightness parameter). If the brightness is more than twice the brightness of the sun, the human eye will be uncomfortable when looking directly. At present, the brightness of the LED display on the domestic market is generally set at 5000CD or even Higher. In some European and American countries, the brightness of outdoor displays exceeding 5000CD is defined as light pollution and will be prosecuted by the local government."
"Light pollution" sometimes brings derivative damage. For example, the reflected light of the glass curtain wall is stronger and more glaring than the sunlight, which causes the ambient temperature to rise by an average of 4 to 6 degrees Celsius, causing a heat island effect. The results of the study also show that "light pollution" is likely to cause damage to the cornea and iris of the human eye, causing visual fatigue and decreased vision.
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