Nanjing to enhance the city's night lighting to create a new business card for "Night Nanjing"

The beauty of a city lies not only in the prosperity of the day, but also in the elegant atmosphere at night. As an important task for the new round of comprehensive environmental improvement, Nanjing is stepping up its efforts to implement the three-year upgrade project for night lighting in the main city. From this year to 2018, the project plans to build a three-dimensional framework of “night, day, lake, and lake, and multiple nodes” around the Yangtze River, Qinhuai River, Xuanwu Lake, Ming City Wall, and outer ring roads. Magnificent city "night business card."

How to control light pollution in the process of upgrading the night lighting? How to green light and energy saving on a large scale? How does Ming City Wall lighting improve cultural relics protection? This round of large-scale lighting improvement project can produce “Night Nanjing” The new business card? With a series of questions of public concern, the author conducted an in-depth interview.

How to control light pollution?

Bright and dazzling, creating an "eco-light environment"

"Light pollution" "does not save electricity" ... such doubts, it seems that the city has become a lighting concern. The night-lighting improvement project being implemented in Nanjing is large-scale and has many nodes. How to innovate the design concept and lighting technology to solve this series of problems?

In the past, the nightscape lighting of some cities, due to the blind pursuit of “newness” and “brightness”, produced light pollution to varying degrees, causing damage to the environment. The night scene lighting in Nanjing has been enhanced, and the idea of ​​creating an “eco-light environment” has been clearly proposed. The impact on people will be minimized in the use of light colors, and a visual experience that is dazzling but not dazzling will be realized.

“The most obvious light pollution is glare and spilled light.” Yang Lan, designer of the street lighting management office of the Urban Urban Management Bureau, said that before each set of lighting fixtures, the brightness, power, and fabric of the lamps must be determined through scientific and rigorous simulation calculations. The position and height of the lamp precisely control the beam angle of the lamp. "The place where the light is cast is precisely cast and the dark sky still remains."

In the South Square of Nanjing Railway Station, it is full of "Chinese style" bamboo-shaped lampposts, symbolizing "step by step." No matter if you look at it from a distance or look closely, looking up or looking down, the bamboo lanterns emit soft light. “Each bamboo lamp has more than 30 modules in it, and the construction workers are working on a section of the site environment.” Xu Zhixiang, assistant manager of the marketing department of Xuanwu Lake Lighting Construction Co., Ltd., said that such Can achieve a comfortable visual experience at any angle.

"The lights on the tree should be raised at an angle of 60 degrees to avoid interference with pedestrians." "Install the headlights at a distance of 5 meters from the ground. Install a small lamp with a canopy of 5 meters or less." ... Xuanwu Lake on the lake road, construction Personnel stand on the lift to light the big tree and the designer guides the site. "The integration of design and construction is an important part of the implementation of this project." The person in charge of the Street Light Management Office of the Urban Management Bureau introduced the design personnel to the installation site to guide the installation, commissioning and modification to ensure that the lighting effects meet the planning expectations.

Shen Ru, general secretary of the Nanjing Institute of Illumination, believes that Nanjing's night scene lighting has been upgraded. The first analysis of the ambient brightness has been made. The lighting effects in each place are focused on the coordination with the ambient brightness environment. "In the first projects that have been completed so far, scientific planning, design and construction have indeed been achieved."

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