Shanghai holds forum on LED technology

LIGHT emitting diode technology will be used to illuminate some busy tunnels and subways after successful testing on small roads and the Changjiang Tunnel-Bridge, Shanghai officials told an international LED forum held in the city today. There are about 380,000 road lamps across Shanghai but LED lights account for only a small percentage, said Li Shuzhi from Shanghai Research Center of Engineering and Technology for Solid-State Lighting. "The Metro operator and the management company of Yan'an Road E. Tunnel, one of the busiest tunnel in Shanghai, have contacted us to do a feasibility research on replacing traditional lights with LED lamps for energy saving and brightness control," Li said. The city's urban construction officials said they also did an LED experiment in Xiangyin Road Tunnel and they will promote the installation of LED lights based on the results of the experiment. Participants at the forum said LED technology has become mature for broader application, but its main obstacles for large-scale adoption are high prices and a lack of uniform industry standard. "The price of an LED light has been dropping in recent years due to improved technology but it is still double the price of a conventional light," Li said. "But it is set to prevail because it consumes 50 percent less electricity, outlasts conventional lighting by five to six times, and its brightness is adjustable, allowing surveillance cameras to record clearer images." LED technology can also be used in farming and medical equipment, according to experts at the forum.

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