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Street lamp is an important part of urban lighting, the traditional street lamps mainly use the high pressure sodium. Due to the high pressure sodium show color the gender is poorer, and effective low flux, caused a waste of energy. Therefore, in recent years to LED road lighting in research and development of all parties has become the focus of attention of the high power LED street lamp, also become the city the first choice of energy conservation, the environmental protection lighting alternative products. In the actual path LED street lamps in the application of high power, high photosynthetic efficiency, will the chip and good with the lamps and lanterns of light design combine to make the high power LED the lamp, cost efficiency improve gradually declined, further promoted the high power LED lighting in the application of city road. Jiangxi province crystal and lighting Co., LTD (hereinafter referred to as "crystal and lighting") focus on high power LED street light, tunnel light of research and development, production, sales, its r&d asymmetric bats wing LED street lamp light distribution with independent intellectual property rights, and to reach the photometric performance indicators. In 2009, two years after crystal and lighting independent research and development success LED street lamp and tunnel light, take the lead in using standard modular design, make high power LED lamps and lanterns is more simple structure, cost more optimized, process standardization, easy installation and maintenance convenience for DuoZhong advantage. The main characteristic of the LED street lamp are: first, using rectangular flare light distribution nonimaging optics lens, through the use of control the distribution of light, spot, ensure that rectangular in ideal pavement brightness and evenness at the same time, eliminate the common high power LED the lamp, and make the glare of high power LED street lamp light energy utilization to acme, no light pollution. Second, the unique lens and chimney integration design, lens also act as an array second optical and protection cover role, avoid face face caused by the independent cover light loss. Third, the standard of patented module can be arbitrary combination into different power and brightness demand. Each module is a independent light source and interchangeable, convenient maintenance, save the disassembly and maintenance cost. Fourth, module independent heat dissipation and lamp shell integration design, fully guarantee the high power LED street lamp cooling requirements and service life, fundamentally meet the high power LED street lamps and lanterns structure and modelling design requirement. Any Figure 1 crystal and lighting with independent intellectual property rights of the light distribution curve 2009 National Day 60 anniversary celebration ceremony eve, crystal and lighting products in nanchang main road Yang road and ziyang avenue installation. Since 2010, nanchang city landmark bridge of bayi bridge use crystal and lighting company production LED street lamp also officially light on. In June 2010, crystal and lighting independent research and development of high photosynthetic efficiency LED lamp, street lamp and tunnel in the use of average of 125.5 lm/W efficiency of chip case, by the national electric light source testing center detection: crystal and lighting LLRA120 high power LED street lamp, the upper and lower total flux for 13395 lm, lamps and lanterns efficacy of 108.6 lm/W; LLTA072 type of high power LED lamp, up and down the tunnel always flux for 8850 lm, lamps and lanterns is smooth effect of 108.8 lm/W; For the present global been reports of the commercialization of the highest efficiency high power LED street lamp, tunnel light. Nanchang in early 2009 was selected for the national "" ten city lights experiment city for more than a year to promote energy conservation and environmental protection, the government efforts unceasingly in the increase. Nanchang city landmark main road "bayi road" in August 2010 will have to use the nearly 10 years of high pressure sodium replacement became high photosynthetic efficiency high power LED street lamp. Single stem from the original 1400 W power down to 400 W, direct energy saving up to two-thirds; At the same time, all the street lamps use the optoelectronic control, namely the 12 o 'clock at night for vehicles and pedestrians after under the circumstances of less to be automatic will power by 50%, make the street lamp energy saving more apparent, product to live longer. Bayi road become a global took the lead in the two-way ten lanes of traffic on the main use of high power LED the lamp, so that the road to the city road lighting (design) standard ME1 level; This means that in jiangxi province LED road lighting technology and application are at the international advanced level. The following is a crystal and high power LED lighting lamps application data: Table 1 crystal and high power LED lighting lamps application data Road name project Ziyang avenue at 4.1 km Yang road at 1.2 km The 1 km of bayi bridge The bayi road nearly 4 kilometers Road condition Two-way six lanes middle 12 meters green belts Two-way eight lanes Two-way six lanes Two-way ten lanes Single stem power Old lamp 800 W 500 W 800 W 1400 W LED lights 400 W 295 W 186 W 420 W Cloth lamp way Old lamp Two-way symmetrical layout Two-way symmetrical layout Two-way symmetrical layout Two-way symmetrical layout LED lights Two-way symmetrical layout Two-way symmetrical layout Two-way symmetrical layout Two-way symmetrical layout Light pole spacing Old lamp New road outfit lamp 30 meters 30 meters 35 m LED lights 41 meters 35 m 32 meters 35 m Light pole height Old lamp New road outfit lamp 13 m 10 meters 13 m LED lights 13 m 12 meters 11 meters 12.8 m Road illumination Old lamp New road outfit lamp 19.8 Lux 20 Lux 28 Lux LED lights 20 Lux 20 Lux 30 Lux 35 Lux Road surface brightness Old lamp New road outfit lamp 1.32 CD/m2 1.5 CD/m2 1.86 CD/m2 LED lights 1.5 CD/m2 1.52 CD/m2 2.7 CD/m2 2.9 CD/m2 efficacy LED for initial efficacy 79.3 m/W 79.4 m/W 79.4 m/W 108.6 lm/W LED for 3 months after the measured efficacy 79.6 / W 79.5 m/W 79.3 m/W 108.7 lm/W LED for six months after the measured efficacy 79.9 m/W 79.5 m/W 79.6 m/W 108.7 lm/W From the above data to see, crystal and lighting independent research and development of high power LED street lamps are standard, and energy saving, high stability, significant performance light attenuation, get experts and user's highly sure. Among them, ziyang avenue and Yang road as an example, the effect of energy saving and emission reduction LED street lamps are as follows: 1. Ziyang avenue, chief of 4.1 kilometers long and with the crystal and company 484 light 217 watts LLRA192 LED lights, and replace the original type 484 light 480 watts high-pressure sodium lamp. Energy saving effect: 459000 kWh saving electricity every year. Emissions a year less effect: equivalent to burn 153 tons of coal to reduce CO2 emissions, 413 tons, 300 tons, reduce oxygen consumption to reduce nitrogen oxide emissions and SO2 2.45 tons. 2. Yang road, chief of 1.08 km, 205 light average power 152 watts LED lights, and replace the original 205 light 480 watts high-pressure sodium lamp. Energy saving effect: 245000 kWh saving electricity every year. Effect: each year is equivalent to the emissions reduction burn 81.8 tons of coal less CO2 emissions, reduce 220 tons, reduce oxygen consumption of 160.6 tons, reduce nitrogen oxide emissions SO2 and 1.3 tons. In nanchang city as an example, there is a total of 130000 4000 light lighting lamps, the average every lamp that 200 watts, according to use LED lighting, 50% of the energy saving effect calculation: Energy saving effect: 48.91 million kWh saving electricity every year. Emissions a year less effect: equivalent to burn 16303 tons of coal to reduce CO2 emissions, 44019 tons, 32013 tons, reduce oxygen consumption to reduce nitrogen oxide emissions SO2 and 260.8 tons. More computing assumption: 1. According to 365 days a year, everyday use 10 hours calculation. 2. According to a ton of BiaoZhunMei can send 3000 kWh of electricity, carbon dioxide emissions for 2.66 ~ 2.72 tons, oxygen consumption for 1.96 tons, discharge sulfur dioxide and nitrogen oxides 16 kilograms. Street urban lighting is an important part of city road lighting, is to make the way people see pavement condition, ensure running and walk at night, reduce safety accidents, and beautifying effects on the city. For traffic safety, social security and people's life has a very important significance. As a new light, LED street lamps are efficient, safe, energy-saving, fast response, long service life, high colour developing index, environmental protection, and other characteristics, meets the national lighting development direction. Such as urban road lighting lamps, the comprehensive popularization LED to a certain extent relative energy shortages, can alleviate the serious pollution situation, and all mankind for each country to the long-term and sustainable growth also has the great significance of the economic and social significance. At present, the LED street lamp popularity the biggest problem is the cost of purchasing cost is higher, but with LED the rapid development of the industry and the various technical breakthrough, the price will have improved greatly, and the comprehensive cost especially upfront input will also have a lot of room for reduction. No matter from which into consideration, the LED street lamp replacement high-pressure sodium lamp benefits far outweigh the disadvantages. So, the LED street light become future urban road lighting are the subject of an inevitable trend. The LED lamps and lanterns is used for the road lighting has been through a few years of history, has been in progress LED street lamp, steps more walk more quickly. Hope in the near future, with excellent performance LED street light more widely appeared in the context of the city.
