LED光源色温对隧道照明入口段和中间段的影响

隧道入口段和中间段的视觉特点不同，要求不同的照明环境。目前国内外的公路隧道照明均是以照明水平为标准，未考虑光源的色温对不同区段的影响。本文通过视觉功效和光生物效应实验的研究，将5种色温的LED光源与传统照明光源HPS、MH相比较，分析了光源色温与反应时间和人眼瞳孔大小的变化关系。通过探讨光源色温对隧道照明效果的实际影响，提出适合隧道照明入口段和中间段的光源；为LED光源在隧道照明中的应用研究提供实验依据与参考。

Effects of Colour Temperature of LED Light Source on Tunnel Lighting

Visual characteristic in tunnel threshold zone is different from that in interior zone. So different illumination environments are required in tunnel different zones. At present, tunnel lighting criterion about effects of colour temperature of light source on different zones is not considered both domestic and abroad. The criterion only concerned about lighting levels. In the paper, five different color temperature LED light sources are compared with traditional light sources HPS and MH. Through the experiments of visual performance and photo-biological effects, this paper analyzes the reaction times and pupil sizes changes with the color temperature of light suurces. These research explores the real effects of color temperature of light source on tunnel lighting and provides the proper light sources on tunnel lighting in threshold and interior zones. These research will provide experiment basis and reference for using LED light sources on tunnel lighting.