Study On The Obtrusive Light Of Urban Cloverleaf Illuminating

The urban cloverleaves being the vital junction of the modern communication system, its lighting design plays an essential part in traffic environmental lighting in night. Regarding from no matter what the visual and mental health of drivers, the functional lighting of urban cloverleaves are closely related to the urban traffic safety.Improving the lighting environment of urban cloverleaves,and controlling effects of obtrusive light high-pole luminaries emit toward drivers,and effects of spill light emit toward the nearby residential area,that is a quite widely concerned topic by our country and the whole world about the urban construction.According to the relevant clauses and the recommended parameters theoretically provided in CIE technical report;to consult lighting quantity standards,the paper induces lighting quantity recommended limits applicable to our country urban cloverleaves.The innovation of the paper is to apply an important method firstly that using TI parameter which CIE recommends to compute and evaluate Disability Glare,and to put forward the recommended value of TI applicable to our country cloverleaves by measuring data,subjective evaluation, lighting simulation software.The paper investigates the present situation of high-pole lighting of our country urban cloverleaves in Tianjin and in Beijing.Simultaneously the paper measures and computes the relevant parameters.Then adopting lighting simulation software, the paper induces the problems of high-pole lighting of cloverleaves in our country cities.The paper puts forward some improving advice depending on several aspects.These correspond of advices and ways are able to be chosen vividly by the lighting design engineers in accordance with specific situation of different cloverleaves and control effects of obtrusive light the high-pole lamps emit toward drivers in the biggest degree in the concrete designing projects.Carrying out"the green lights"and pushing forward"the green lights program"is the general trend in the lighting realm of the world.This thesis takes this as the grounds exactly,facing the present conditions that our country urban cloverleaf haven't gotten the reasonable valued,try hard for the"healthful","green","humanistic"road for lighting design of our country urban cloverleaves.