In 2014, the Nobel Prize in Physics was awarded to Japanese scientists Akasaka Akira, Amano, and Japanese-born scientist Nakamura Shuji, who was naturalized to the United States, in recognition of their outstanding contributions to the invention of the blue light-emitting diode. In the past, the light-emitting diode (LED) had red and green light, but it was not until the breakthrough of the blue-ray technology in the 1990s that it could be synthesized into a white light close to daylight, and then the lighting revolution brought about by the current LED was triggered. In the award-winning statement, the Nobel Prize Committee specifically mentioned the invention of LED lights, which will make a bright dream for the 1.5 billion people who have not connected to the power network. Because the power required to light the LEDs is very small, relying on It is enough to generate electricity from simple solar power. There are still 35 people in the world who are not stably integrated into the power grid. There are 7 billion people in the world, 1.5 billion are not connected to the power network, and there are more than 1 billion power networks unstable. Some can only supply electricity for several hours a day. This group of people we call energy poor people (EnergyPoverty), most of them in Africa, Southeast Asia and India. Without electricity, they must rely on daytime work, housework, water intake, and reading. Once in the evening, the family must rely on candles or kerosene to cook dinner, or to do family work. Use kerosene lamps and candles to read? Not only is it too extravagant, but the eyes will quickly fatigue. The indoors will be filled with exhaust gas after fuel combustion, which will inevitably have adverse effects on family health in the long run. There is no reading of electric lights, let alone watching TV to absorb domestic and foreign information, and using computers to access the Internet is even more delusional. In the new era of globalization and informationization, the most vulnerable group of these developing countries, their education has been left behind. The reason why the energy poor do not have a power network is that they are mostly remote or illegally inhabited so that they cannot obtain the basic facilities such as basic electricity. He may live in a partial settlement in Tanzania, or he may live in many slums in the Mumbai metropolitan area of ​​India. However, LEDs can reverse this situation. Portable LED Rechargeable Lights for the Masses India's largest women's group All India Women's Association (AllIndiaWomensConference) is based in the community, setting up a community solar charging station to charge portable LED lights during the day, and people renting lights when they get home from work. Provide night lighting at home for several days. Since the cost of solar panel construction is still a threshold, there is an opportunity to build a shared charging station through joint cooperatives or community fund-raising methods. Letting people rent lanterns is equivalent to selling electricity cheaply to those in need. More people can get it. Community women are trained to become equipment maintenance technicians and plan to earn compensation. Not only the All India Women's Federation, but also the Barefoot College, and many independent cooperatives are pushing similar things. The reason why solar lamps are widely promoted in India is that the well-known environmental think tank Teri in India has long promoted the plan to illuminate millions of people and successfully attracted foreign governments such as the British government. Of course, the price of solar panels has fallen sharply, and the emergence of LED lamps is the main reason for everyone to enjoy the bright future. Portable small-scale solar power and LED lighting group SunKingProLED and solar energy integration into a new favorite On the other hand, the existing industry has invented a small solar module with LED lamps, specifically sold in areas such as Africa where lighting is lacking. The above figure is the first generation of SunKingPro. Although the photovoltaic panel is small, it can supply 20 hours of lighting after being fully charged, and the second generation has reached 36 hours of illumination. Incidentally, this group of devices can also supply mobile phone charging. In recent years, the mobile phone penetration rate in Africa is rapidly increasing. People use the mobile phone to access the Internet and communicate with the world, and consume much less power than computers. The SunSawang social enterprise in Thailand has found a special business model. As early as 2004, the Thai government installed solar energy systems for more than 200,000 suburban households without electricity. However, there was no maintenance plan, so that up to 90% of the equipment could no longer be used, and residents were forced to go back to use candles and oil lamps. In the early days of SunSawang's business, the main reason was to repair the solar energy equipment abandoned by the government. They tried to train the solar power technicians in the community, and then gradually developed different service projects, such as one-year equipment maintenance and repair, renting solar energy. LED lights, or install new home solar equipment to support small basic appliances. One liter of light in the Philippines (ALiterofLight) plan you have seen on the Internet, it is to add bleach to the empty treasure bottle, installed on the iron roof, the white light into the dark room, so it is called the sun SolarBottle is a great help for the densely populated slum community and has helped hundreds of thousands of families around the world. Since 2013, the planning team has begun to promote the Sun Pte bottle combined with solar panels, with LED lights inside, installed on the roof together, introducing natural light during the day, and hours of artificial lighting at night. Residents of a community in the Philippines hand-made community streetlights with solar LED lights. The key to the perfect combination of solar photovoltaic technology with LED lighting is that both are DC, low voltage and can match each other. Therefore, the combination of the two does not need to convert the direct current generated by the solar battery into alternating current, thereby greatly improving the efficiency of the entire lighting system, and achieving an energy-saving, environmentally-friendly, safe, and efficient lighting system, which is a nearly perfect combination.
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