Nanjing: in the dead of night, the street lights become dark

Who says LED is the ideal street lamp? Yesterday, said Nanjing City Street Management Office Deputy Chief Engineer Liu Lei is "harmonious city, city lighting light the future" seminar: currently the voice of LED energy-saving lamp high performance in fact is still not stable enough, Nanjing will introduce a number of current energy-saving lamp power will change to achieve the city lighting system.

Currently in the domestic street lamp system, the LED lamp is very high, Shanghai to introduce 20 thousand, Changzhou to introduce the 15 thousand ~ 20 thousand, publicity is the purchase cost, although higher than ordinary lamps, but can save money. Yesterday's seminar, Nanjing City streetlights Management Office Deputy Chief Engineer Liu Leishi said: Nanjing in August last year began in the west side of the city of Taishan Vanke bright road, installation of the LED lamp 6 different manufacturers to do the test, the results not only the various lights showed big differences, but with a lamp in different periods also show different.

These 6 lights power ranging from 120W to 168W, and some of the power of the 168W lamp brightness is not as good as the 120W lamp, more strange is that after a period of time, the two brightness rises, the brightness of the 4 decline, life span is also different.

Since the performance of the LED lamp is not stable, then how to achieve energy saving Nanjing street lighting system? In this regard, Liu Leishi said that the traditional street lamps can be used to reduce the voltage drop and power and other ways to achieve energy saving, Nanjing this year will use the new lamp ballast variable power, automatic power down lights in 6 hours, 400W to 250W, 250W to 150W, 150W to 100W. For example, Longpan Road, street lights will be where the automatic voltage drop, "new projects this year will be used in all the power facilities will be reduced, and about more than 2 thousand and 600 will transform the old lamp lamp. "

Low voltage, low power, will not affect the lighting effect? "If you do not see the naked eye for the power of the moment, it is not a feeling. Liu Leishi said that the lighting brightness control has a lower limit, to ensure the lighting effect.

Yesterday, the square carpet (all the lights arranged in the underground lamp glass, like Zhang Ditan, Nuan Baiguang (overall), white than ordinary light but feel warm) and a number of new city lights at the seminar debut. At present, including warm white, reducing power and a number of advanced energy-saving lighting technology has been in Nanjing Ring Road, Xu Zhuang Software Park pilot, the old district, no street lamp will be as a new area project together with transformation.