LED道路照明“灯下黑”问题的分析  

Research on the Dark Area under the Luminaire of LED Road Lighting

作　　者：潘怡蕾 刘超博 王洪波 卫庆军 

机构地区：[1]苏州市吴江区城市管理局,江苏苏州215200 [2]欧普道路照明有限公司,江苏苏州215212

出　　处：《照明工程学报》2018年第1期67-71,81,共6页China Illuminating Engineering Journal

摘　　要：基于实际的道路照明应用场景,分析了灯下黑现象产生的原因。分析了灯具配光、路面反射特性、布灯参数、观察角度等因素对亮度分布的影响,得出产生LED道路照明"灯下黑"的客观因素为观察角度大、路面材料(长期磨损导致的定向反射光过多),主观因素为不合理的灯具配光、布灯参数导致了相邻路灯间无法亮度互补,给出了三个改善建议:减小距高比、增加逆光仰角、增加大角度出光量。Based on practical experience,we studied why one dark area occurs just under the luminaire of LED road lighting. Several factors,such as light distribution of luminiare,surface reflection of the road,pole distance,and observation angle,are analyzed. Two conclusions are achieved. Firstly,the main reasons of the non-uniform( i. e. dark area) are the too-big observation angle,and road surface( too much light is reflected directionally because of long-term usage of the road,which makes the road close to mirror). Secondly,bad light distribution and too big pole distance may lead to bad uniformity of the light on the road. Three improvement suggestions are discussed: reducing the distance-to-height ratio,increasing the elevation angle of the backlight,and increasing the lumen output at large angles.

关 键 词：灯下黑 亮度分布 观察角度 路面材料 距高比 逆光仰角 灯具配光 

分 类 号：TM923[电气工程—电力电子与电力传动]