The escaping light refers to the light emitted from the luminaire, which is not directed at or swept by the illuminated object. This useless light illuminates the surrounding objects, reducing the efficiency of floodlighting. Different lighting designs of the same object have a large difference in the amount of light escaping, which is related to the beam angle, beam shape, luminaire arrangement and aiming point position of the selected luminaire. Infringement of light refers to the harassment of people's lives, work or rest without the light shining on the subject, such as the glare that strikes the eyes of the driver and the pedestrian, affecting their ability to work and move; the light that hits the window of the house affects the residents. rest.
Poor maintenance of lighting facilities, from the current situation of the formation of night scenes, lack of maintenance and management after lighting. In addition to the quality problems of some products, equipment and construction, the lamps are damaged, the words and patterns are incomplete, and the scenes are bright and dark. Because they are not maintained in time, the night scene is full of glory. These phenomena are not uncommon and should be given a certain amount of attention.
Energy waste is greater In urban night lighting, the use of floodlights accounts for a large proportion. Due to design and site conditions, a large amount of light energy is scattered into the sky, inside the building (through the glass curtain wall) and on the road, which leads to Decreased lighting efficiency also causes adverse effects such as glare, visual interference and light pollution.
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