| 摘要
LED作为一种新颖的固体照明光源，具有生产过程以及产品几乎无污染，不怕震动，可轻易实现0~100%的连续调光，能在安全特低电压下工作，可连续工作于开关闪断的工作状态以及其光输出具有定向性等诸多独特的优势，近年来在其光效和光色上的明显进步已使它能进入商业化应用。但由于我国计划经济产业布局的影响以及LED的专业知识和照明电器综合知识在从业人员中普及的不足，造成了在实际的设计和应用中，没有针对LED的特点进行扬长避短的应用，出现了众多不合理及不合格的应用产品。本文就LED应用于道路灯具中目前存在的问题进行了分析，也给出了解决问题的思路和实例，供广大同行参考。 关键词：多光源、定向发光、三次配光、过度照明、系统效率、LPD Abstract
As a new-fashioned solid state lighting source, LED has many unique advantages such as nearly no pollution of the product and in the production process; resistance to vibration; easily dimmering from 0 to 100%; operating under safe extra low voltage; continuously operating under the condition of switch-off; having a fixed direction of the light output etc. In recent years, LED’s obvious improvement of luminous efficacy and photometric characteristic let it be applied for commercial purpose. But for the influence of our country’s plan-economics industry arrangement and for the lack of the popularization of LED professional knowledge and comprehensive knowledge of lighting equipments in the professional personnel, LED is not appropriately applied in practical design and application according to its characteristics and there appear many unreasonable and unqualified application products. This passage analyzes the problems occurring in LED’s application in the luminaries for road and street lighting and also put forward some ideas and examples for solving the problems, as reference to professional colleagues
Key words: lamp-house, directional luminescence, thrice goniophotometry， excess illumination, system efficiency, LPD
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