Lighting for energy saving, environmental protection, the color favored by people for good. Currently, LED lighting in the flashlight, night light, LED decorative lamp has a large number of application areas, but in the field of indoor lighting, because the high prices, so that ordinary citizens were prohibitive. LED interior lighting is currently prevalent in the market, such as Wal-Mart near my home all using LED fluorescent tube. LED lights, tunnel lighting are basically government demonstration project.
Lighting in 2009, the most interesting event is the start of China "Ten City, ten thousand" project. August 31, 2009, "Ten City, ten thousand" project was officially launched. For a time, major research institutions have thrown forecast data associated with the LED lights, independent businesses have invested in other industries to the LED lamp industry.
Now the main use of the road lighting is high pressure sodium lamps, LED lamps can replace the high pressure sodium? In the entire light efficiency, cost, LED street lamps have been in almost the same high-pressure sodium lamps.
LED luminous efficiency because the record has been renewed, so the LED street light efficiency is improving, as of November 2009, the efficiency of the light source for LED lamps has reached 132lm / W, the efficiency of the whole lamp 70-80lm / W, high pressure sodium maximum efficiency of 140lm / W. LED lights because of high color, with a 150-200W of LED lamps to replace 400W high pressure sodium lamp, although the low flux LED lights, but LED lights illuminate the ground under the object definition is more high. Then the power consumption of high pressure sodium lamp ballasts are included, the light effect, LED lamps and high pressure sodium lamps have been very close.
Cost is also our concern. If the price of 5,000 yuan 200WLED street price of 1,500 yuan replacement 400W high pressure sodium lamps, lamp per year savings in electricity = (400-200) × 10 × 1 × 365 = 730 (yuan) to light 10 hours a day , Calculation of 1 yuan per kilowatt. Then the cost recovery time = (5000-1500) ÷ 730 == 4.8 years. The actual operation of the LED lights with low maintenance costs, high pressure sodium lamp of the transformer and cable costs, the actual recovery time will be shorter. Local government generally required by the "EMC mode" install lights, and the warranty of three years. From cost considerations, LED lights have to hit the road.
According to the survey LED Engineering, 2009, in "Ten City, ten thousand," the 21 pilot cities, the project actually LED lights (including the tunnel lights) mounted lamp number 222 000, a figure than the previous forecast of millions of major research institutions light some gaps. 2009, 21 cities are still in the pilot project stage, the project is also a part of the LED lights storms quality problems, but did not affect the investment enthusiasm of local governments. The next two years (2010-2011), in addition to the 21 pilot cities LED lights mounted on a larger scale, the 21 cities outside the city will begin to install lights, light assembly and the number is expected to reach 1.5 million.
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