LED street lamp power supply miniaturization Road

Review: in the case of low profit, the various components of downsizing has become the choice of many companies, micro LED drive power came into being.

With the promotion of new municipal projects around the transformation, LED street lights become the absolute protagonist, shine. At the same time, along with the industry chain on the low price of accessories, the price of LED street lamp is declining. In the case of low profit, the various components "downsizing" has become the best choice for many enterprises, micro LED drive power came into being.

Miniaturization brings cost reduction

The year of the horse spring festival, less noisy in the high streets and back lanes of fireworks, but the festival atmosphere is like a lot. Instead of colorful LED, from LED street lights, landscape lights to a number of complex LED decorative lights. LED lamps in this Spring Festival is to grab the limelight, but also to the industry for more than 2014 companies look forward to. 2013 is the first year of LED lighting, in the year of 2014 is sprint acceleration, the industry will be good to 'below the glasses'. But we also need to see last year's incremental does not increase the phenomenon will still exist, especially LED street lamps and its supporting industries. With the continuous decline in the price of LED street lights, as one of the core components of the driving power supply has declined. Last year, the LED power market is clearly oversupply, making gross profit by 50% in previous years, the overall decline of about 10%. Jiang Shuxing said, fierce price competition forced the enterprises more from the aspects of structural adjustment to reduce costs. LED lamp is mainly used for outdoor lighting, the use of the environment is more complex, exposed to wind and rain the sun and rain, installation and maintenance, maintenance is very convenient, the cost is relatively high. Therefore, the efficiency of the power supply itself, heat dissipation, waterproof and moisture resistance and comprehensive reliability becomes critical.

LED street lamp power supply miniaturization Road

As the heart of the LED lighting system, the driving power in the selection of raw materials can no longer save, then you can only rely on the optimization of the structure to achieve the throttle". With the development of nanotechnology and related micro technology, miniaturization has become the future trend of the semiconductor industry. Miniaturization of LED power supply using microelectronics technology and ultra large scale integrated circuit technology, the power supply to further reduce the size of the price further reduced. The existing LED street lamp power supply is generally relatively large, the use of high-quality aluminum shell. "If these 'big guy' to narrow, only the housing can not save a lot of cost. "Summit said in an interview with reporters, relying on micro control technology in high-end accumulation, we have succeeded in the 50W power supply to the size of a matchbox. LED street lamp power itself is the cost of manufacturing on the one hand, in addition to the installation and maintenance costs of LED street lamp, which is not a small expenditure.

Miniaturization makes installation and maintenance more convenient

In the case of frequent LED street lamp quality problems, the use of micro power supply can not only facilitate the maintenance of LED, but also can greatly reduce costs. In October last year, two workers in Zhongshan Ancient Town to replace the installation of LED street when the death of electric shock tragedy, to the full swing of the LED street lights poured a pot of cold water. Although the accident is not the main cause of improper operation, but the safety of LED power has become the focus of attention once again. "Repair rate is high, resulting in some local government to replace the LED street lamp to start watching the swing. Wang Xingang said that many of the LED street lights have been installed power repair problems. Because the power is generally built in the shell of LED street lamp, the conventional power supply not only occupies a larger space affect the overall cooling, and once the damage repair and replacement is trouble. If the micro LED power into these problems will be solved. In the cost of LED street lamp that includes the cost of the replacement and maintenance costs caused by the failure and product manufacturing costs, while the former is also a lot of street lighting companies and the use of units rather bother. It is understood that if the temperature is not hot bulb and miniature power supply, LED lamp can use plastic shell, can greatly reduce the weight. So the price of the whole lamp is only equivalent to the cost of ordinary street lamp shell, and once the problem is very easy to replace. The use of some special material shell can greatly reduce the weight of LED street lamp. "Now the market has a very mature high thermal conductive plastic made of heat sink shell, so that the weight of the whole lamp can be reduced by 1/3. And also can withstand 5000 volts high pressure, there is no problem with safety regulations. Jin Tao said that the problem now is that the other performance of the power supply can be verified by the security requirements after miniaturization.

How far is the way to miniaturization

Under the premise of ensuring the performance of the power supply, it is necessary to put forward higher requirements to the IC technology. Unsafe factors "by general electric power supply voltage instability, surge current, power miniature LED power was not too big. Chen Heng said that the latest research and development of high voltage constant current drive IC also only in the middle power has a prominent application. LED street lamps in the power and high power in terms of safety standards or have a big difference. To 100W as the demarcation point, the following 100W power supply safety standards to comply with the UL1310 standard; 100W above to comply with the UL8750 standard. At the same time, the basic level of waterproofing must be IP67. Li Zhiji said, from the number we can see that the latter to be more stringent standards.

In addition to the technical requirements are relatively high, the high price is also one reason. 50W miniaturization of existing technology can basically do, Taiwan has several companies have launched a sample. But it's harder to do that. Pang Guiwei said that even the 50W LED micro drive power prices are more expensive, they do not really save the cost of street lighting manufacturers.