Electrical safety glass lamp lamp LED can overcome worrying?

The boy touched the LED traffic lights pole electric shock critically ill, LED lighting renovation project two construction workers died of electric shock, LED lighting products caused by electric shock problems continue to appear in newspapers. Since last year, the Philips Lighting Company and the U.S. Consumer Product Safety Commission (CPSC) after "dangerous" caused by electric shock after power recalled about 99000 LED lighting products, this year the European Commission by the "may cause users to shock and 1 off our LED lights off the market. The potential safety problems of LED lighting products have attracted wide attention from all sectors of society.

LED lamp electric shock hidden from the safety rules are not strict

To a large extent, the domestic standard to promote the development of the industry, but also let a lot of blindly pursue low-cost enterprises drilled loopholes.

Not long ago, unqualified published in the Shanghai Bureau of quality and technical supervision of the 2014 embedded lighting product quality supervision and spot check list, even NVC, Mitsuo aurora and other well-known brands of LED lamps because of inadequate protection of qualified "serious quality problems" on the list.

So, what is the reason for the frequent LED lamp electric shock hazard? "Of course, is the production of enterprises in order to save costs. Jun Sheng Cci Capital Ltd investment director Zhang said in an interview with reporters, currently on the market for LED lamps are mostly PC plastic and aluminum combination, of which 1/3 to 1/2 for aluminum. In order to save costs, most of the domestic enterprises to adopt non isolated power supply, high pressure part is directly connected with the metal shell and touch, the resin layer only aluminum substrate as insulation material, so naturally generated a great security risk. "

The reporter understands, because the lighting is very difficult to do 100% completely without leakage in the structure design, so the safety requirements more stringent European and American countries, the need for high voltage testing of more than 2000V of lamps, in order to ensure the leakage risk control in a certain range. In order to be able to pass security certification, manufacturers generally use isolated power. As for the price of the huge pressure of the domestic market, the non isolated power supply isolation power higher cost $1-2, accounted for almost half of the price of the finished tube, so many domestic enterprises choose to use the low-end aluminum structure of lamp tube in order to save the cost of non isolated power supply. But this product is sold in the domestic market, it is difficult to pass the security certification in Europe and the United states.

In addition, the current LED lamps a large number of organic materials used in the combustion will produce harmful fumes, but also become a fatal fire hazard. On the other hand, the developed countries, such as subway and public places, not only most of the wires to be covered with iron pipes, lamps also try to use non combustible material, in order to ensure the safety of extreme circumstances.

"It is undeniable that less stringent safety standards in China largely promote the development of the industry, but also makes a lot of blind pursuit of low cost enterprises take advantage of the standard design in accordance with the minimum standards, no standard is free to play. Zhang said.

Glass tube or as a solution

The glass tube itself has a high degree of insulation and thermal conductivity, even if the use of non isolated power supply, but also to ensure safety.

In addition to the aluminum tube, LED lamp and a glass material technical route. Reporters from the Secretary China Association of Lighting Department learned that the traditional incandescent lamp production enterprises with FSL as the representative of the use of glass equipment and original technology, produced some glass lamp LED lighting products, and emerging LED lighting enterprises to Linsen as the representative of PC plastic material mainly to lamp.

Zhang believes that the glass tube is higher than the PC plastic transparent, easy to achieve high luminous efficiency, but also easy to cause glare and discomfort; when the fire happens, the glass will not be like non flame retardant PC plastic produce poisonous gas, but also because of their fragile glass and bring a series of problems. "Each has its own advantages, the key to the application of the occasion. Zhang said.

In this regard, Dongying chemical technical director Zhao Ning told reporters, in fact, compared to the aluminum tubes, the biggest characteristic is that the glass tube has high safety, high insulation and thermal conductivity because of itself, even if the use of non isolated power supply, but also to ensure safety. At the same time, glass tube fire, high temperature will not deformation.

According to Zhao Ning introduction, after the recent efforts and innovation of domestic enterprises, glass tube technical indicators have been greatly improved, compared with the advantages of the general pipe is also more distinctive. In addition to good security, low cost and effective technical solutions through CE, UL certification, and convenient export first, the glass light transmittance is higher than that of PC plastic, excellent thermal stability, and glass tube 360 are in contact with air, heat evenly; second, the length of time the glass will not light yellow. The more dirt resistance, corrosion resistance, more durable; third, transparent glass tube is far less than the cost of "semi semi plastic aluminum tube, even in order to prevent glare, the inner wall of the glass tube after grinding, spraying or corrosion process plus cost, the cost of glass tubing also has great advantage; fourth, compared with aluminum PC, plastic, glass products more environmentally friendly. The whole process of the production of the glass tube is only about 1/2 of the aluminum tube, and the anode oxidation of aluminum has the problem of waste water pollution. In this way, the glass tube is more in line with the concept of green LED; fifth, compared with the traditional fluorescent lamp, glass tube has a great similarity, in line with the visual habits of most people.

Although it is difficult to say whether the glass tube can replace aluminum