At the Shanghai Semiconductor Lighting Engineering Technology Research Center, there is a “LED Life Experience Pavilionâ€, one of which is extremely charming: LED fiber optic lights are mounted on all four walls and ceilings to imitate the Milky Way stars, and the fibers are hidden in the wall. The light source does not see the light body, only the star is a little bit filled, and looking up to see a heavenly star is like a hand pick... On the evening of April 21st, the landmark building of the Expo Park - the China Pavilion lights up. Xinhua News Agency reporter Yang Guangshe
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LED full name LED, the earliest red, followed by yellow, green. But it was used for signal indications until the 1990s when the blue LED was born. The combination of phosphors and blue LEDs makes it easy to obtain white light, which is the way LEDs go on.
However, its speed is fast, in the words of Dr. Xiong Feng in the research center, it is called a hundred flowers in one night.
The advantages of this new generation of light source are too obvious, producing green and using energy saving. It is called another leap after the incandescent lamp, fluorescent lamp and high-pressure gas discharge lamp in the history of human lighting.
At the 2010 Shanghai World Expo, LEDs were widely used in indoor and outdoor lighting, landscape decoration, signage, information display, and performance sets. At present, the entire Expo Park is expected to become the world's largest LED concentration demonstration area.
This is actually not the first time people see LEDs. The 2008 Beijing Olympic Games was a model for the successful application of high-brightness and high-power LEDs. The wonderful opening ceremony became the biggest LED lighting show at that time. But after that, many people are still not very clear about the difference between LED lights and neon lights, hose lights, after all, in the city night, they can all be seen in the signboard.
"Professional people can easily distinguish between incandescent and LED lights from the light. But for the public, it is better to teach a hundred good things." Xiong Feng said, "This is LED in the Expo and in the Olympics." In a different place, in 5 months, countless people will come here to interact with Expo Technology. They can see, feel and feel LED lighting. Even, it is the feeling that the invisible traction of technology will tend to be longer. It shows its power in time."
Xiong Feng pointed out that LEDs can be seen everywhere in life: traffic lights, display billboards, bank stock index screens... "Although life has already entered the homes of ordinary people, LED still has its immature: its own development So fast, the supporting industry can't keep up; compared to foreign countries, our LED industry is very young, which makes the price become the most difficult bone in the market."
LED lamps cost more than incandescent lamps, and fiber-optic LEDs are more expensive. When there are visitors to the starry sky room, they usually want to copy the private residence, but after listening to the offer, they press this unrealistic dream.
In Xiong Feng's view, the 2010 Shanghai World Expo is a good opportunity and platform for LED technology: demonstration concepts to the public, testing technology for themselves, and presenting ideas for the future.
As one of the permanent buildings of the World Expo, the “One Axis and Four Pavilions†consisting of the Expo Axis, China Pavilion, Theme Pavilion, Expo Center and Performing Arts Center will be able to meet the “Eco Expo, Science and Technology Expo, Humanitiesâ€. The concept of “Expo†can also display LED innovation achievements and play a role in demonstrating and promoting LED lighting projects. At the same time, it also fully considered the follow-up utilization and sustainable development needs after the World Expo, and displayed and continued the theme of “Better City, Better Lifeâ€, promoted the technological level of Shanghai's semiconductor lighting industry, and promoted the scale development of Shanghai's semiconductor lighting industry. .
"The 1878 Paris World Expo exhibited the incandescent electric lamps made by Teddy, which was invented by Edison. This is the signal of the arrival of the incandescent lamp era." Xiong Feng said: "And the Shanghai World Expo is likely to open a 'first year of semiconductor lighting.'" 