When the LED when the people lit home?

For ordinary people, LED is a familiar and unfamiliar noun. Familiar with the billboards everywhere because of the street, strange because LED, that is, light-emitting diodes, still can not be used for large-scale home lighting.

In fact, in 2010 the Shanghai World Expo, application of large-scale, innovative LED lighting technology has become a major highlight of the opening ceremony at the time: a 300 meters long and 30 meters high, the world's largest outdoor LED display, and the flame together to create an unforgettable visual feast; the biggest bright spot in Taiwan Museum -- light water on the application of the LED for the lantern display technology, created a wonderful scene sky lanterns slowly off; in addition, square landscape lighting, Riverside Landscape Expo Zone, identification and intelligent guidance system are also using LED lighting technology.

World Expo has been over a year, LED lighting industry status quo? Reporters came to Zhangjiang High Tech Park before the interview with the national semiconductor lighting project of Shanghai industrial base, deputy director of the Shanghai semiconductor lighting engineering research center Yang Weiqiao.

New era LED

2800 kinds of applications, about 1000000000 chips of LED, "one axis and four pavilions and the whole park gorgeous and varied night lights are dependent on the LED lighting technology building, Shanghai World Expo to achieve the world's first large-scale LED lighting technology integration application, more show the LED lighting and resplendent prospect to the world.

What are the benefits of LED lighting compared to existing conventional lighting technologies? Yang Weiqiao said, LED lighting has the following advantages: first, compared with the ordinary LED lighting technology, lighting technology more environmentally friendly, because the LED is made of non-toxic materials, unlike fluorescent lamps containing mercury pollution, can be recycled, no ultraviolet and infrared spectra of it, neither heat nor radiation, small glare, cold light, safe touch, which belongs to the typical green lighting source.

Secondly, the LED is basically a very small chip encapsulated in epoxy resin, very small, very light. LED power consumption is quite low, because it is DC drive, ultra low power (single tube 0.03-0.06 watts), electro-optical power conversion close to 30%. Generally speaking, the working voltage of LED is 2-3.6V, and the operating current is 0.02-0.03A. This means that it consumes no more than 0.1W of electricity, the same lighting effect than the traditional light source saving nearly 80%.

Also, the LED lamp has long service life, have called for long life lamp LED light source, because it is a solid-state light, epoxy resin packaging, light body and no loose parts, there is no filament burnability, thermal deposition, depreciation and other shortcomings, in the right current and voltage, the service life of up to 60 thousand to 100 thousand hours, 10 times longer than traditional light source life above.

It can be said that compared with the traditional light source luminous effect of LED light source is monotonous, low-voltage micro electronics, it is a successful combination of computer technology, network communication technology, image processing technology, embedded control technology, is the digital information products, also the application of semiconductor optoelectronic devices high point technology.

In an interview with reporters learned that, although the recent government free distribution of 100 million energy-saving lamps, due to improvements in technology, low mercury energy-saving lamps made of mercury can be reduced to below 5mg, but the recovery is still arduous task, because the amount of mercury containing such a low mercury energy-saving lamp to pollution 27.27 tons of drinking water.

Not only that, because our country does not have special recycling mechanism and recycling regulations, so the majority of fluorescent lamps and energy saving lamps are buried as ordinary garbage, regardless of the fluorescent lamp or energy-saving lamps are used in extremely fragile glass as the shell, the mercury once leaks, consequences be unbearable to contemplate.

LED had a cold shoulder

In fact, since the 80s of last century, LED lighting technology has been in the world.

At present, it is mainly used in three aspects: first, traffic lights. Compared to the previous traffic signal lamp, incandescent lamp from outside covered with red, green and yellow lenses, after using LED technology of energy saving effect is very obvious, the Shanghai traffic is using LED technology.

Second is the car's brake lights. Compared with the traditional brake lights, LED brake lights in the driver stepped on the brakes instantly lit up, in terms of quick response and driving safety are better.

Third outdoor lighting. Once the neon lamp is the city's beautician, when night fell, the lights, neon lights of the city riotous with colour dress was exceptionally beautiful, but the neon lights by both ends of the electrode will be rare gas inside the tube on Combustion in high voltage electric field, it must turn to high temperature to burn the tungsten light, resulting in a large number of the electrical energy in the form of heat is consumed, energy consumption is relatively large, life is short, has been replaced by LED.

LED there are so many benefits, why can not be popular in home lighting it? Speaking of this, Yang Wei bridge reluctant: "the price of LED seems expensive, people are not willing to buy, this is the main reason. It is understood that the current market price of ordinary fluorescent lamps are generally more than a dozen dollars, while the price of LED lights to seventy or eighty yuan, compared to a difference of five times, it will make people hesitate to buy LED lights. In addition, the reliability of the product is also a problem. At present, LED lighting market many businesses through the dragons and fishes jumbled together, leading to frequent LED lights, so that people can not buy, also.