LED popularization of Suzhou landscape lighting is more than 90%

The release of the Nobel prize in physics this year has made blue light LED technology the focus again, and this technology has been widely used in Suzhou city lighting.

In September this year, more than 3700 sets of LED lamps and lanterns were installed on the ramp of the southeast Ring Interchange

In 2014, the Nobel prize in physics was awarded to three scientists from the United States and Japan: Akasaki Yong, Tian wild Ho, and the middle village of two, in recognition of their invention of the blue light emitting diode (LED), and thus brought new energy saving light sources.

Compared to the previous Nobel prize in physics, the blue light LED technology is more close to the ordinary people, and it can be illuminated and exist in cameras and mobile phones. In Suzhou, more than 90% of the light source of landscape lighting comes from LED technology. There are more than 2500 street lamps on the main and secondary roads of AAU district with LED lamps and lanterns. In addition, the street lighting of all districts in the District of AAU will be replaced by LED gradually.

Mass use of municipal facilities LED technology to brighten the landscape of Sucheng

The world's first commercial LED was developed in 1965, and in Suzhou, large quantities of LED for municipal facilities were more than 40 years later.

In 2008, Suzhou started the renovation of the ancient city river landscape, the first LED lights began to replace the original use of sodium lamp, halogen lamp and other light source lamp; in 2009, the urban building landscape lighting began to replace the LED light; after that, the newly built buildings, landscape facilities and other lighting basically use LED lighting technology. At present, the urban landscape lighting, in addition to a small number of floodlights also use halogen lamp or high pressure sodium lamp, almost all of the LED lamps and lanterns, accounting for more than 90%.

"Now, the application of LED lamps and lanterns in landscape lighting is very common. In addition to the carrier of large power floodlighting, in the park, green space, square, building and urban elevated lighting places, because of the rich color of LED, the CIE color curve can be completely covered with the LED light source. All saturated colors, and various colors of LED by mixing light, and the organic integration with the fluorescent powder, almost unlimited to produce any color, while its flexible control, light adjustment, smaller size, the advantage is very obvious. Zhu Jihong, chief of technical quality department of city lighting management department, is introduced.

Because of the obvious advantages of LED technology, from 2013, the street lighting of all districts in the District of Suzhou is gradually replaced by LED. At present, about 70% of the replacement work has been completed.

The popularity of street lamps is not as good as the "bottleneck" in the high specification of the landscape lighting.

Compared with the common use of LED lamps and lanterns in landscape lighting, LED is still in the transition stage from demonstration and attempt to the gradual promotion and application in the field of road lighting.

From 2007, Suzhou City Lighting Management in some branches of the district began to try a small number of manufacturers' LED products; in 2009, the first pilot installed 10 LED street lamps on the Pingjiang Xincheng River on the road, and carried out the tracking test. At present, nearly 2500 LED road lamps have been installed in nearly 30 roads in the District of Suzhou. In September this year, the Department also installed more than 3700 sets of LED guardrail lights on the ramp of the southeast Ring Interchange. Not only the illumination is guaranteed, the beauty is beautiful, but also the flicker and glare are avoided.

Why is the popularity rate of LED technology in street lights far less than landscape lighting?

Zhu Jihong introduced, this is due to the defects of the current LED lamps and lanterns, "simply from the light efficiency and energy saving, LED products are now close to the high voltage sodium lamp, which is generally used in urban roads, the lumens of every watt, the unit of luminous flux. The light luminous intensity is 1 kdera's point source, the luminous flux in the unit angle is "1 lumens", the English abbreviation LM) can exceed 120LM, however, the price of LED lamps is still higher than that of the traditional lamps and lanterns, "energy saving does not have the money"; in addition, the current state of the modularization and standardization of the LED street lamps is not unified. One standard, therefore, the manufacturer's product specifications are not consistent, resulting in the LED road lamp in maintenance, it is difficult to replace the light source at the site, and even need to return to the supplier maintenance, very inconvenient.

There are hundreds of LED lamps and lanterns production enterprises in Suzhou

LED lighting technology has been recognized by all countries as the most potential efficient lighting industry. It is called after the incandescent, fluorescent and high pressure gas discharge lamps, and another revolution in the field of lighting. In addition to urban lighting, LED technology has been widely used in the fields of automobile lighting, traffic signal, multimedia imaging, optical fiber communication and so on. For example, car lighting, the original use of halogen lamps, its flow of about 40LM, now some cars have started to use LED lamps and lanterns, lumen can reach 120LM. At present, there are hundreds of enterprises producing LED lamps and lanterns in Suzhou.

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