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 subways to alleviate traffic congestion. LED green lighting on the Guangzhou Asian Games and Shenzhen Universiade, quietly into the subway car. The rapid development of LED lighting technology and the in-depth implementation of China's energy-saving 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 cited LED lighting, and the market for subway lighting has begun to appear in the eyes of many manufacturers. Because of its vast future, it is Philips and Sanxiong. Aurora and other old-fashioned lighting companies, or LED companies such as Xinli Light Source, Shifu Lighting, and 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 national departments issued the "Technical Specifications for LED Lighting for Metro Places", which detailed the procurement specifications for subway LED lighting, and opened the standardization road for subway LED lighting. 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 LED lighting on 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, LED began to be the first choice for lighting in the construction of subways. In the recent news, Shenzhen is preparing to launch new cars to improve the congestion of Metro Line 1, while in the new cars, the interior lighting is owned by CSR. 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 use of automatic photosensitive LED, its energy consumption can automatically reduce its illuminance according to external illuminance to reduce its energy consumption, according to the measured data, using LED lighting, can basically reduce energy consumption by 50 a year. The EMC dilemma has blocked the railway bidding government to dominate the 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, plus a suburban subway station, a total of 250,000 lighting fixtures need to be replaced, this number shows that the development potential of subway lighting is immeasurable. Different from the large-scale commercial promotion model in Europe and the United States, 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 engineering 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 the author: The reason why the EMC model is difficult to promote in China is that there are many institutional obstacles besides not knowing enough about it in China. 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 obstacles have cast a shadow over the commercialization of LED lighting in China, which has slowed down the LED lighting market in the subway and railway lighting markets. 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 popularize the application of LED lighting in public places and indoor areas, LED lighting products are gradually applied to outdoor lighting, indoor lighting and so on. At present, statistics show 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 baht, compared with 75,000 baht in the whole year. 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 Society that in 2013, the number of LED lighting products will reach 30 million, covering the types of tunnel lights, street lights, downlights, Based on the spotlights, a new bulb was 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 LED lighting and energy-saving pilot projects, and replaced nearly 2,000 LED lamps, saving 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. 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 public transportation subways, 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 LEDs 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. The things that have been done in one fell swoop may only be illusory in the past, but now it has gradually become a common thing around us. Such a subway, such LED lighting technology, will undoubtedly be more conducive to the sustainable development of ecological civilization.
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