公路隧道照明灯具有效能效指标分析

Analysis on Effective Efficiency Indexes of Highway Tunnel Illumination Lamps

结合隧道建设的特点,根据行车安全性和舒适性的需求对其有效照明区域的边界条件进行了计算。在此基础上,选择CIE推荐的B型配光曲线为研究对象,对来自不同厂家的20种公路隧道照明灯具进行了测试,并对其有效光通量和光通量利用系数进行了计算,进而得到了灯具有效能效指标。测试结果表明:样本有效能效值相比于传统测试的灯具总能效平均下降幅度达到20%,最大下降幅度达到41%。考虑到隧道洞壁对光线的反射效果有益于提高有效照明区域的平均亮度,引入隧道洞壁平均反射率作为灯具有效能效修正的影响因子,并对采用不同反射率面层材料情况下样本灯具的有效能效修正结果进行了测试分析。

Combining with the characteristics of tunnel construction and according to the demands of traffic safety and comfort in tunnels,the boundary conditions of effective lighting area are calculated. On this basis,selecting type B light distribution curve that recommended by CIE as the study object,20 kinds of highway tunnel illumination lantern from different manufacturers are tested,and their effective luminous fluxes and luminous flux utilization coefficients are calculated to obtain their effective efficiency indexes. The test result shows that the average decline rate of the sample effective energy efficiency values achieves 20% compared to the total energy efficiency of traditional test lamps, and the largest decline amplitude reaches 41%.Considering that the light reflection effect from tunnel wall helps improving the average brightness of effective lighting area,the average reflectivity of tunnel wall is introduced as the correction factor for effective energy efficiency of lighting,and the correction results of effective energy efficiency of sample lamps adopting surface materials with different reflectivities are tested and analyzed.