Semiconductor Lighting: Pioneer Of Urban Energy Conservation

- Feb 10, 2021-

As one of the country's five major semiconductor lighting engineering industrialization bases, Shanghai has initially formed a relatively complete LED industry chain, forming a green lighting industry cluster with Zhangjiang High-tech Park as the core and radiating Jiading, Songjiang, Yangpu and other regions. As of the end of last year, Shanghai had 105 LED-related patents and formulated more than 100 national standards, industry standards and internal standards for the optical industry.


From the Bund to the East China Sea Bridge, a "future light source" called LED is not only dressing up Shanghai at night, but also acting as the city's "energy-saving pioneer". The reporter learned from the "Fourth China International Semiconductor Lighting (LED) Forum and Exhibition" opened yesterday that by 2010, the landscape and public lighting in Shanghai will be led by LEDs, and Shanghai is expected to save 1 billion a year. A kilowatt-hour of electricity is equivalent to the total lighting electricity consumption of a small and medium-sized city in a year.


LED lights are not the "old face" of filaments and bulbs, but solid-state light sources made of semiconductor chips. It uses the movement of electrons to emit light and directly converts electrical energy into light energy. The conversion efficiency is as high as 68%, which is more than 5 times that of incandescent lamps. Therefore, the power consumption of the LED is only 1/10 of the traditional light bulb, but the service life is 100 times. It is estimated that if one third of the country’s traditional lighting is replaced with LEDs, one Three Gorges hydropower station will be saved every year.


The more beautiful the night Shanghai and the LED are, it can be described as a "match in love". Under the embellishment of LEDs, Shanghai’s iconic landscape "Oriental Pearl" consumes only 70 watts per light spot, which is nearly 75% less electricity than the original incandescent lamp. The new landmark "Easter Egg" in Wujiaochang is embedded with a 5-centimeter wide LED strip. It disappears during the day and shines at night, winning the praise of the citizens. It is unbelievable that the 1.42 million luminous points distributed on the steel frame of more than 10,000 square meters consume only 80 kilowatts of electricity per hour.


Recently, two other large-scale events have become associated with LEDs. The closing ceremony of the Special Olympics will be accompanied by LEDs. The outer membrane structure of the "Water Cube" in the swimming venues of the 2008 Beijing Olympic Games will become colorful under the background of LEDs. through. At present, the project is under public bidding nationwide, and Shanghai enterprises have joined the competition.


Behind the splendid city night view is the inexhaustible power provided by technological innovation. As one of the country's five major semiconductor lighting engineering industrialization bases, Shanghai has initially formed a relatively complete LED industry chain, forming a green lighting industry cluster with Zhangjiang High-tech Park as the core and radiating Jiading, Songjiang, Yangpu and other regions. By the end of last year, Shanghai had 105 LED-related patents and formulated more than 100 national standards, industry standards and internal standards for the optical industry.


It is reported that in the next few years, Shanghai enterprises will aim at key technologies for the industrialization of high-power white LEDs, reduce production costs, improve luminous efficiency, and let LEDs truly enter the homes of ordinary people. As one of the twelve strategic products to be developed in Shanghai's "Eleventh Five-Year" technology plan, LED will surely become one of the highlights of the 2010 World Expo.


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