Study On Library LED Illumination In Chongqing Colleges And Universites

In recent years, with the promotion of"211 Project"of Ministry of Education of China and the expansion of college and graduate students, A tide of exploitation and building town rise in the whole country including chongqing. The storage space of the old libraries is reallocated because of the appearance of new college town. The variety of this kind of space, put forward a new problem to the stack lighting. Apply to the development of better orientation information, knowledge-based economy age, it experienced the challenge of change and development, and appeared some new characteristicses, such as the vivid, high skill turns, humanize, marking etc,the trend " space integral whole turns" is more and more obvious. How to adapt these varieties should be a problem deserve research for the college libraries of chongqing .Nowadays, illuminate realm is taking place a change, Light-Emitting-Diode( LED) application being illuminating realm is obtaining a fast fierce development. Because the LED has the advantage that a lot of traditional light sources don't have, many countries in the world enlarged the strength of the research about the LED, and drew updevelopment and applied target, and aggressive expansion this kind of green lighting sources. Currently each parameter of white LED, have already canned come to the request that the indoor function illuminates. Light-emitting efficiency is to judge light source whether the index sign of[with] economy energy, In this aspect, the commonΦ5 mm white LED of the latest research has already canned attain a 150 lm/W, being far larger than the 90 lm/W of fluorescent lamp. Therefore, how combine white LED development, lead the commonΦ5 mm white LED into the stack lighting of the college libraries of chongqing, resolve currently high school library of chongqing to illuminate an existent problem, is a topic of worthwhile research.This topic investigated eight college libraries of chongqing, and measured it more than 30 stacks. Pass a great deal of data analysis, we controled basically various lighting problem of existing in the various type stack currently of the college libraries of chongqing. This topic illuminates in the application in the college libraries of chongqing for the commonΦ5 mm white LED, laying good foundation.This topic, from studying cooperate light curve of the common white LED of various type , measured three kinds of familiar types of the common white light LED with spectrophotometer in the laboratory. Pass a comparison the data measured, we made sure to apply the type of the commonΦ5 mm white LED which illuminates in the stack. We pass an investigation and check to seek related data, getting stack to illuminate a characteristics, end invented to apply to illuminate in the stack of the commonΦ5 mm white LED lamp.This topic use the commonΦ5 mm white LED into indoors function illumination.Besides, this topic contains another important breakthrough, which solves the illumination calculation problem about practical application of commonΦ5mm white LED in stack room. And, by using the computer aided design technology in originally possessed of form complicated and computing tedious formula foundation, this topic creates a calculation method with brief clearly form——"K-Calculation Method".