Limited Energy Efficiency Values and Energy Efficiency Grades of LED Luminaires for Road and Tunnel Lighting(GB 34748-2019)Suggestions and Reflections on Application Practice
At present,secondary light distribution technology is unable to solve the problem of increasing scattered light caused by excessive total reflection light,thereby reducing lighting efficiency;By changing the path of light travel to reduce overflow,more light is focused on the demand interface,thereby improving light intensity and effectively improving lighting efficiency;Efficient lighting fixtures are not equivalent to high light efficiency utilization.The measured efficiency of lamps can basically meet more than 90％ of the integrated efficiency of light sources.Manufacturers that meet the standards choose light sources with unified specifications,and the difference in energy efficiency is not significant.It can be concluded that the evaluation of lamp efficiency mainly depends on the efficiency of the light source,and is not closely related to the lamp factory.
functional lightingenergy efficiency levellight efficiency utilization ratelighting efficiencypower density
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