Melani Warod

The voice of the LED lamp is very high in the Chinese street lamp system at present: Shanghai want, introduce 20,000, Changzhou want, introduce 15,000- 2 ten thousand. Propagate and claim the LED lamp buys the cost though than the ordinary elevation of light, can economize on electricity and save money.

Philip illumination hold " the harmonious city, future of shade and shadow " in Nanjing January 8 Seminar last Nanjing city appearance of the city management office personnel, architect business quarter designer,etc. the artificers and planners of appearances, how to make the harmonious relation of canvassing Philip's illumination among city, people and light together, found the imagination of more charming urban environment. Application promoting energy-conservation to light in the urban construction.

But at the seminar on January 8, the market street lamp vice chief engineer of management office Liu Lei of Nanjing reveals in fact: Nanjing just began to install different LED lamps of 6 manufacturers to test on the road of Mount Tai by the west Wanke's brightness city of river in August of 08, the result not only the light of all one behaves widely differently, but also the same different periods of light display the difference. These 6 home of lamp power is from 120W-168W, the light that the light luminance that some mark the power 168W is not as good as 120W. The more strange one is, some time later, two family luminance rises, 4 of luminance drop, the life-span is different too in size.

In addition, Liu Lei points out in fact: The products of LED street lamp do not have unitary standard to produce at present, the street lamp cannot be maintained at all; The producer offers the model change that the street lamp tests very fast, that had is to eliminate the original test products in several months; The street lamp of and normal high-pressure sodium for lamp is the cycles of 5-8 years at least, so personnel can all judge and maintain the street lamp of high pressure sodium lamp soon the Off-The-Shelf street lamp.

Since the characteristic of the LED lamp is unstable, then how does Nanjing street lamp system realize energy-conservation? At this point, Liu Lei shows, such ways as the traditional street lamp can adopt down voltage and lower the power realize energy-conservation in fact. Nanjing all street lamps of the new clothes of this year will adopt the ballast turned into the power, the automatic reduced power after 6 hours in the lighting: Drop to 250W from 400W, drop to 150W from 250W, drops to 100W from 150W. The dragon curls in the middle way and already adopts the street lamp of very automatic down voltage, " the new projects will all adopt this kind of facility that will lower the power this year, about 2600 old lights will be transformed too. "

The voltage is low, the power is small, whether will influence the lighting result? "See, change power at that moment with naked eye, to have sensory very much. " Liu Lei shows, there is a lower limit in the dispatch control of the illuminating brightness, guarantee the lighting result in fact.

At present, include warm white light, lower power batch advanced the intersection of lighting and power-saving technology, surround the intersection of imperial tomb and way, the intersection of village and the intersection of software centre and other places and pilot project Xu in Nanjing already, old Residential Area, have the intersection of light and the intersection of street and lane too until the intersection of Residential Area and the intersection of person who make new advances and project transform together. Introduce according to President Liu, surround " road lighting system of warm white light " of new clothes on the road of imperial tomb in Nanjing It should be a system of new road lighting that the ceramic metal halogen lamp +HID electronic ballast form, the environment of improvement road lighting that it can be very good, bring more sense of safety and comfort for going out at people's night, especially suitable for the business street, square to the critical place of colour rendering index. So, President Liu holds and keeps the attitude to LED street lamp that the market advocates at present!

Vice President of Chinese lighting society, China illumination learn exterior illumination professional committee Jianping Zhao enumerate in a large amount about high pressure sodium lamp in report of seminar too and the intersection of LED and street lamp preferably make data at present The contrast, the result shows, LED street lamp is not the optimal products of road lighting yet at present. Moreover, are used for making LED of the street lamp at present, it is the colour temperature in LED of 8000K in order to improve all utility, this colour temperature is obviously too high. The ones that surround the new clothes on the road of imperial tomb in Nanjing " The road lighting system of warm white light " ,Its colour temperature is in 2800K, this colour temperature is more ideal in the road. The high illumination intensity needs high colour temperature, low illumination level needs low colour temperature; At present, in the road illumination standard which the country goes out of newly, the requirements for road lighting of the speedway actually only 20~30LX, the colour rendering index is expected so either much; But in the square, business street, the colour rendering index is very important, and the high pressure sodium lamp is obviously on the low side in this respect, so they recommend using the products of COSMO, surrounding " road lighting system of warm white light " of the new clothes on the road of imperial tomb in only Nanjing .

In addition the intersection of square and the intersection of carpet and light (in the glass that light fix up underground all, look like pieces of carpet wholly) , warm white light (a little whiter than the ordinary light, but feel color is a little limpid in more sight) Wait for batch new urban lighting lamp to appear at the seminar.