The development of electric light source has been continuously innovated. It has experienced incandescent lamps, halogen lamps and fluorescent lamps. Now it is the era of fixed light sources: LED, OLED. Nowadays, the LED industry has reached the stage of practical application, so LED technology innovation should play more LEDs. The characteristics of the city, play the role of energy-saving lighting, the two years of the subway as an important space for public activities, when building lighting facilities, most of the subway stations use LED lighting solutions, not only can save a lot of electricity and a large number of copper cables, but also Ensure the quality of the lighting while saving a lot of maintenance costs. LED quietly illuminates the domestic subway In recent years, with the rapid development of the economy, road congestion has become increasingly serious, and major cities have successively built underground transportation subways to alleviate traffic congestion. LED green lighting on the Guangzhou Asian Games and Shenzhen Universiade, quietly into the subway car. LED lamps have naturally become a beautiful landscape of the ground OFweek semiconductor lighting network. Jiuzhou Optoelectronics, Shifu Lighting, Xinli Light Source, and Shengpu Optoelectronics are competing to seize the subway lighting market. The rapid development of technology and the in-depth implementation of China's energy conservation and emission reduction policies have led to the introduction of LED light sources for road lighting and subway lighting. In recent years, there have been hundreds of road and tunnel lighting companies in China that have developed and produced white LEDs as light sources. The number of subway lines using LEDs as lighting sources has also increased. Since 2008, multi-region subways have been used as reference lamps. The market for subway lighting has begun to appear in the eyes of many manufacturers. Because of its vast future, it is the old light source of Philips, Sanxiong o Aurora, etc., or Xinli Light Source, Shifu Lighting. LED companies such as Shengpu Optoelectronics are competing to seize the subway lighting market. In 2008, the Hong Kong MTR and Jiuzhou Optoelectronics introduced LED light source as the first interior lighting of subway cars in the world, which opened the LED era of subway lighting. In 2011, the relevant state departments issued the "Technical Specifications for LED Lighting for Metro Places", which detailed the procurement specifications for subway lamps and opened up a standardization path for subway lamps. According to the survey, in 2013, there were about 48 domestic subways, and 28 cities were building subways. In the domestic subway network, taking the Shenzhen Metro as an example, in addition to the use of the entire line of Line 2, the rest of the use of traditional lighting, the LED market potential of subway lighting can be described as quite large. In addition, Guangzhou Metro Line 2 Sanyuanli, Railway Station, Yuexiu Park, Memorial Hall, Park Front, Haizhu Square, City Ergong, Jiangnan West, Zhongda, Lujiang, Kecun, Moshasha, Xingangdong, Weizhou In the field of lighting systems in public areas of 14 stations, in 2013, energy-saving LED lamps were replaced, and the number of lamps was about 18,000. In 2014, in the construction of the subway, LED was generally used as the first choice for lighting. In the recent news, Shenzhen is preparing to launch a new car to improve the congestion of Metro Line 1, and adopting CSR in the new car. 601766, shares it) patented LED centralized power supply patent technology, saving more than 30 compared to conventional lighting. In September, Shanghai also introduced LED lighting compartments for Lines 3 and 4. The new car body also adopted a lightweight design, which is nearly 20 lighter than the old model, thus reducing the energy consumption required for vehicle traction. At the same time, the automatic photosensitive LED is used, its energy consumption can automatically reduce its illuminance according to the external illuminance to reduce its energy consumption. According to the measured data, LED lighting can reduce the energy consumption by 50 in one year. Railway bidding government led the EMC dilemma has blocked LED expansion of the subway market. Today, the number of subways in China has increased year by year with the development of the city, and there are nearly dozens of cities in the same subway construction. However, most of the domestic subway lighting still uses traditional lighting, such as the Guangzhou Metro, there are eight lines, of which the lighting in the public service area has to be replaced, the number of lamps is up to nearly 20,000 sets. In the city of Paris, a total of more than 300 subway stations have been opened by OFweek Semiconductor Lighting Network. In addition, there are a total of 250,000 lighting fixtures to be replaced in the suburban subway stations. The number shows that the development potential of subway lighting is not available. Estimated. Different from the large-scale commercial promotion model in Europe and the United States, the LED lighting in mainland China is also a tentative project led by the government. The commercialization idea is still unclear, which has caused great trouble to the commercialization cooperation process of domestic led engineering. The EMC energy contract management model has played an important role in large-scale LED projects such as subway lighting in foreign countries. Through the new cooperation mechanism of EMC, the MTRC does not have to bear the project cost in the early stage of the project, and cooperates with the LED enterprise with zero-cost investment, while the LED enterprise recovers the investment and profits in the energy-saving benefits obtained during the project implementation. As an exotic product, the EMC model has suffered from soil and water in China, and the market promotion situation is difficult to open. An industry insider told reporters that the reason why the EMC model is difficult to promote in China, in addition to the domestic understanding of it, there are still many institutional obstacles. Enterprises and users have low mutual trust. LED companies will have financial risks when implementing EMC projects. It is not certain whether the owners can perform credit performance and pay energy savings on time after receiving energy-saving benefits. The owners who accept the implementation of lighting renovation are not sure whether the technology and products provided by LED companies and the service capabilities of the company are excellent. EMC projects have problems with financing difficulties. In the early stage of EMC project implementation, LED companies need to provide a large amount of start-up funds in advance, and the bank's loan requirements for this business cooperation model are not recognized, resulting in difficulties in financing LED companies. The state has over-taxed the EMC model. Since the state has not introduced a taxation specification specifically for the EMC model, the energy-saving income obtained by the LED enterprise is regarded as the markup of the general energy-saving equipment seller, and the VAT is included in the regulation, resulting in excessive taxation. The above three institutional obstacles have cast a shadow over the domestic EMC commercialization process, which has slowed down the process of the subway and railway lighting market. The policy trend tends to be bright. The LED subway lighting market is very promising. Because the subway runs underground all the year round, there are high requirements for lighting. It requires not only power saving, high brightness, long life, but also uninterrupted lighting. However, commonly used incandescent lamps, fluorescent lamps, high-pressure sodium lamps, and the like have certain defects, and some inevitable lighting failures may occur. In contrast, LEDs are environmentally friendly, energy efficient, long life, high luminous efficiency, no radiation, etc., extending service life and significantly reducing energy consumption. Moreover, the strong shock resistance of LED is very suitable for the subway operation environment. It can be replaced in six or seven years. The energy efficiency of LED lamps is nearly 50 higher than that of ordinary fluorescent lamps. Therefore, LED has become the best green lighting fixture. The use of LED lights in subway stations not only saves a lot of electricity, but also saves a lot of maintenance costs. At the same time, the quality of the lighting can also be ensured. LED provides a subway lighting scheme with novel structure, low cost, long service life, good power saving effect and high reliability for the problems existing in the current subway lighting system. It is understood that after the national policy subsidies spare no effort to spread in public places and indoor applications, products are gradually applied to outdoor lighting, indoor lighting and so on. At present, the statistics show that the OFweek semiconductor lighting network shows that in the first quarter of 2013, the tender for street lamps and tunnel lights in Guangdong Province from January to March 2013 has reached 76,000, while the total amount of tenders last year was only 75,000. Moreover, Lu Fang, director of the National Development and Reform Commission's Elimination of Incandescent Projects Office, recently pointed out at the China Lighting Forum hosted by the China Lighting Association that the number of products to be promoted will reach 30 million in 2013, covering the product categories of tunnel lights, street lights, downlights, spotlights. On the basis of this, a new bulb has been added this year. The Beijing Metro Department plans to complete the renovation of 100,000 LED lights in 2015. According to the relevant person in charge of the department, the energy consumption of the subway continues to grow, and energy conservation and consumption reduction has become an important work content of the Beijing subway department. Since 2005, the Beijing Subway has invested 8.5 billion yuan in the transformation of more than 70 equipment systems for two subway lines. The data shows that last year, the Beijing Metro implemented a power-saving pilot project, which replaced nearly 2,000 LED lamps and saved 156,000 kWh annually. This year, Beijing Metro Operation Company will expand the promotion of LED green lighting, and it is expected to replace 20,000 LED lamps, with an estimated annual energy saving of 1.7 million kWh. Editor's summary: In the 21st century, we advocate resource conservation and ecological civilization, and the whole world is promoting the path of sustainable development. In this era of knowledge-creating economy, the use of energy-efficient lighting has made people more comfortable and environmentally friendly, which is the goal of most people. As the emergence of the public transportation subway, the green way of travel has added a new choice, and the latest LED technology is placed on the entire station and each car, which is a new contribution to energy conservation. The use of led not only saves a lot of electricity and a large amount of copper, but also saves a lot of maintenance costs, while also ensuring the quality of lighting. In the past, it may only be a fantasy, but now it has gradually become a common thing around the world. Such a subway, such a led lighting technology, will undoubtedly be more conducive to the needs of ecological civilization and sustainable social construction.
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