LED street light "quality door" frequently lacks supervision mechanism

On January 9, 2012, the Guangdong Provincial Bureau of Quality and Technical Supervision (hereinafter referred to as “Guangdong Quality Supervision Bureau”) announced that the qualified rate of LED street light and light source controller products was 73.2%, up 29.2% year-on-year.

However, relevant persons from the Guangdong Quality Supervision Bureau said to the Gaogong LED reporter: "Through this sampling, we found that the current LED streetlight problem is still very serious. Although these problems are normal phenomena in the development of LED street lamps."

“This is the aftermath of market self-regulation”. Xiang Yu (pseudonym), a person from Shanghai Street Light Management Center, told reporters that some LED street lights can meet the basic road lighting requirements, but most of the LED street lights in the market are still in the flicker. Energy saving. In his view, the LED street lamp industry not only needs to improve product quality, regulate the market, but also how to boost user confidence is imperative.

Especially after the “Ten Cities and Ten Thousand Miles” demonstration project, many local street lamps have become more cautious about whether to enable LED street lights. According to the survey of high-tech LED reporters, in the pilot cities of the second batch of semiconductor lighting application demonstration projects of “Ten Cities and Ten Thousand Cities”, there are still three cities that have not installed LED street lights.

Market demand is still increasing

The Gaogong LED Industry Research Institute conducted a survey on the implementation of the 2009 Ten City Wanhao Demonstration Project and found that the life of LED street lamps was less than 5,000 hours. By 2010, this number has reached 10,000 hours. In 2011, the life of LED street lamps can reach 20,000-hours. In terms of light efficiency, it was 60-70 lm/w in 2009 and 80-90 lm/w in 2010, and it can reach 100-120 lm/w in 2011. In terms of the important factors affecting the life of LED street lamps, the stability and reliability of the power supply have also been greatly improved.

Obviously, compared with the performance of LED street light quality in the previous two years, the quality of LED street lights has been significantly improved. Zhang Hua, deputy secretary-general of the China Municipal Engineering Association's road lighting professional committee, said in an interview with Gao Gong LED reporter: "The development of LED street lights is still relatively fast. Compared with the previous two years, whether it is LED light source or drive, in technology, There has been a big improvement in performance."

The improvement of LED light source and driving technology has also led to the rapid growth of domestic LED street lamp installations in the past two years. According to the statistics of the High-tech LED Industry Research Institute, the installed amount of LED street lamps in China was 80,000 in 2008, 190,000 in 2009, and 350,000 in 2010, and reached 530,000 in 2011.

Zhang Hua said that after a round of baptism in ten cities, some LED streetlight companies began to concentrate on research and development to improve quality. In the past two years, indoor lighting has risen, and its market prospects have also attracted some street lighting companies to shift their positions, focusing on indoor lighting. “The LED streetlight market has returned to calm, which is also a great opportunity for the development of the industry.”

LED street lamp pass rate is 73.2%

According to the reporter's understanding, the Guangdong Quality Supervision Bureau conducted a spot check on 632 enterprises in the province. Among them, there are 41 batches of LED street lamps and light source controllers produced by 41 companies from 7 cities including Guangzhou, Shenzhen and Zhongshan. Second product. The results showed that 30 batches passed the test and the pass rate was 73.2%. Among them, 11 LED street lights were unqualified.

Previously, the General Administration of Quality Supervision, Inspection and Quarantine also published the results of spot checks on road and street lighting products produced by 72 companies. The results showed that dozens of companies had a total of 30 products that were inspected as “unqualified” and the product qualification rate was even lower. To 58.3%. Among the “black list” companies are three listed companies, including Goer Acoustics and Topband (strategic partner Ledi Opto is involved).

Table 1: 2011 Guangdong LED street light and light source controller product quality special supervision and inspection of unqualified products and their list of manufacturers

"LED street lights have very high requirements on technology and production. Not every company can meet this requirement." Zhang Hua said that the problems of domestic LED street lights are very serious, the products are not mature yet, but the price war has been very hot. It is.

"According to the current LED street lights on the market, most of them are not energy-saving, and everyone is ignoring energy conservation." Xiang Yu shows that the luminous intensity and angle of LED lamps are small, and the street lamp spacing can only be 25 meters to 30 meters. The lamp spacing for high pressure sodium lamps was originally 35-40 meters. As a result, the number of street lights installed per kilometer has increased, resulting in more energy.

This, on the other hand, reflects the concerns of some local governments about LED street lights.

Local concerns still exist

Although the LED street lamp technology has been improved, the installation volume has also increased significantly. However, the disastrous defeat of the ten cities in 2009 has caused many local street lamps to “talk about the LEDs”.

Zhang Hua said frankly, "This has a lot to do with LED street light technology. In recent years, everyone is taking medicine. Now the product is much more mature than before. But when the product is mature, everyone is afraid to use it because everyone eats before. Too many medicines."

Many local governments are not very confident about the quality of domestic LED street lights. From the implementation of the second national road lighting demonstration project in 2010, it can be seen that in 28 demonstration cities, as of the end of December last year, there are still 3 cities without LED street lights. Xiang Yu told reporters that the reason was that "lights are more cautious about LEDs. LED street lights have no clear guarantees for light decay, longevity and daily maintenance. They dare not easily replace street lights. Moreover, the price of LED street lamps is still expensive."

At the same time, the EMC model has remained controversial since last year. Although the cooperation between LED street lamp companies and contract energy management companies has indeed lowered the government's doubts about LED street lights. However, the technical problems of the LED street lamp itself and the quality control problems in the production process of the enterprise still bring great risks to the local government.

Wu Xiaoguo, chairman of Nanke Group, gave an example to the reporter: "According to the EMC model, the maintenance of LED street lamps is done by the production company, but once the company has a situation, the maintenance work will be paid by the government." In fact, The situation of LED business owners running from time to time has also occurred. Last year, the capital chain of enterprises such as Duo Duoli and Deshida broke down, which greatly affected the attracting parties (here, local governments).

"The quality of LED street lights is not good, and it is troublesome. When other cities demonstrate well, they will follow suit." The person in charge of a local street lamp office told the reporters that they were helpless. According to the reporter, the cities with more lights in the country are Dongguan, Shenzhen, Yangzhou and Weifang. Of the 530,000 lamps, these cities account for more than 100,000. The above-mentioned person said: "Because these cities have LED production bases, the local government will use LED street lights for investment and attract investment."

“The biggest reason for the current uneven quality of LED street lamps in the market and the market chaos is the lack of functional standards for the performance of LED street lamps.” Xiang Yu expressed deep concern about the current LED street lamp market. He said that the safety standards can refer to traditional standards, but the performance of LED street lights is still very different from the traditional.

A director of the street lamp office told reporters: "At present, LEDs are expensive. From the perspectives of light distribution curve, luminous efficiency, light decay, and longevity, LED street lamps with unqualified quality are not as energy-efficient as those advertised on the market." When the product is not mature, everyone is desperately blind, which is related to the government's agitation. When the products are gradually maturing, the orderly development of LED street lights requires the guidance of the government. Otherwise, everyone will not dare to go to the end, and will disappear again.

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