The top three worldwide event: the Olympic Games, World Cup and the World Expo. And known as the world economy, science and technology, culture, "Olympic" event of the World Expo, is the "Technology Expo, low-carbon Expo" concept consistently.

In the Expo Park area of ​​5.28 square kilometers in area, are under the jurisdiction of the Shanghai Management Center street there are 29 public roads. The LED and related technology as great for the city to promote the energy saving effect, and is considered the most energy saving features of the new solid-state cold light source, but did not make it 29 Expo area ranks of lighting products.

"Science and technology, low-carbon" for the program of the World Expo, why would this energy saving LED cold light source of new solid-state shut it?

General trend has been led lights PASS Expo

"In early 2008, the Expo Bureau and Shanghai Municipal Electric Power Company related to street management professionals, the lights for the World Expo site design and construction for a number of discussion, the Expo Bureau has proposed in site selection of LED lights or lamps required Solar LED street light program. "chief engineer of Shanghai Management Center street Xiaoming said," We conducted some research and technical analysis, that the technology was not mature domestic LED lights, LED lights throughout the trial, the scene is difficult to make use of satisfactory, can not find a product for the application of LED lights when LED lights common problems. "

Luminous efficiency is not high, the power (drive) failure is high, a large lumen, LED lights was a common problem. In addition, the weight of the lamp is too large, the structure is irrational, high color temperature, life is not long (and claims to 100,000, 50,000 hours does not match), non-traditional manufacturing enterprises to promote LED street lights passion higher lamps with less light and reasonable is also worried about the Shanghai street management center focus.

"Solar energy technology is not satisfactory, especially the battery life is short, frequently replaced, because the power lamp is relatively large, therefore, the required battery capacity is relatively large, the weather in Shanghai has more special, not street lighting to meet the demand for a long time in recent years, parts of sections from the Shanghai trial of the case analysis of solar lights, such as Chongming, Songjiang and other places, the results not reach the basic requirements. "

The foregoing analysis, 2008, Shanghai Electric Power Company an opinion within the basic: Expo site should not promote the use of LED lights; solar lights more technically can not meet the basic requirements of street lighting.