2015年3月11日星期三

The future of LED lights

Across the globe, many countries are shifting toward LED lighting because of its advantages of lower wattage demand, lower maintenance cost and longer lifetime it offers. Even though the initial cost of installing outdoor LED lighting can be substantial, it can save a lot of energy for us. For example, about 200,000 street lights will be replaced by LED bulbs in Denmark itself, which are likely to save municipalities 70% on their energy bills. Nowadays, we use LED lighting for household lighting and industrial lighting such as the lamps, the light for vehicle, the work light for operation.



As the more energy-efficient illumination options for consumers and industrial users, the demand of LED lighting has been increasing in these years. Many governments successfully passed a series of domestic policies that serve to not only stimulate LED lighting demand, but also to improve LED lighting mechanism. Countries with the most advanced economies such as the United State and Japan have well-established plans and programs to phase out legacy incandescent lighting. Chinese government proposed to spend 2.2 billion RMB on the promotion of CFL and LED lights, and to prohibit the sale of 100 Watt-and above incandescent light bulbs, along with those of halogen lamps whose efficiency levels fall below required standards. That shouldn't be surprising, because the global lighting account is about 25% of the total energy consumption.

LED lights are affordable for many customers and industrial users now. The prices of low-end and low-wattage LEDs that are produced in China have reduced by nearly half in the last one year. Higher-wattage LEDs that are produced in other regions of the world have also reduced by 15 to 20%.


So far, China, the largest LED lighting market in the world, do not have good reputation in other countries. Large buyers warn that the low-priced LEDs and LED lights produced by the Chinese manufacturers usually burn out after less than a year. According to industry experts, the Chinese manufacturers are still using outdated machinery and equipment, which is a major cause for low quality of LEDs and LED products. With the rise in demand, Chinese manufacturers have started ordering new equipment from western suppliers early this year, which would soon improve the quality of their products, and hence, their reliability.



LED lighting technology has been in progress all the time. Since the invention of the blue LED, professor Hiroshi Amano, Nagoya University Graduate school, was awarded the Nobel Prize On January 14th,2015. Red and green LED have been appeared for a long time, with the appearance of blue LED, we can produce a variety of colors of LED lights. Professor Amano said,” I want people around the world can afford LED lights, but the current price is still very high for them. If the production costs will be reduced to one-fifth of today, the popularity of LED lighting products will ultimately be greater than it is now. ”


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