[Source: Gaogong LED's "LED Good Products" November issue (Total 59) Wen|Xu Chaopeng] From the current development trend of street light power supply, the waterproof treatment of the drive power supply is likely to be from the production process of the power supply enterprise. Stripped out. According to the reporter's understanding, many streetlight companies have begun to try to waterproof the lamps themselves in an overall way, in order to significantly reduce costs, and this move is expected to become the development trend of the power industry in the future.
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“Now many street lamp manufacturers purchase bare boards from the drive power companies and then install the power supply through a structural waterproof mode. Simply put, it is to change the process mode of the traditional high-power drive power supply traditionally, and to seal the power supply to the street lights. Inside the cavity." An industry insider told reporters in an interview that this waterproofing process can reduce the waterproof level required by the driving power supply to some extent, thus reducing the manufacturing cost to some extent.
Therefore, for many current LED driver manufacturers, is this really the case? Is it true that the industry insider said that the waterproof power supply is about to enter the end of development?
At present, everyone's waterproof treatment of power supply mainly through the following two modes: First, the traditional potting process, which is mostly in the form of filled waterproof silicone; Second, the use of structural waterproof, with a sealing ring on the periphery of the power supply, In this way, a sealed whole is formed to achieve the purpose of waterproofing.
“With structural waterproofing, we can save at least 8-13 yuan per power supply, and the weight can be greatly reduced.†Chen Hao, Product Manager of Maoshuo Power Technology Co., Ltd. (hereinafter referred to as “Maoshu Power Supplyâ€) In an interview, I told reporters that these weight and cost reductions can be achieved without lowering the existing technical parameters.
It is reported that the current Maoshuo power supply has a variety of structural waterproof power. Chen Hao said that Moso Power will use this waterproof form in most of the subsequent power supply. The market is optimistic, then is structural waterproofing really suitable for the entire LED lighting market? This industry peers have different opinions about these two methods, and they also have different views.
"In fact, I think this kind of non-potting structural waterproofing is still insufficient. Once this waterproof mode is adopted, when the specification of the finished luminaire is more than 100W, the demand for heat dissipation performance will reach a peak value of the product. It is necessary to add additional equipment to solve the problem of heat dissipation.†Qiu Zhonghua, R&D director of Shenzhen Langke Intelligent Electric Co., Ltd. believes that the result is that most enterprises also need to equip them with a special air supply device. Or, the matching heat sinks will be made larger, but in fact, this also increases the cost of the lamps themselves.
At the same time, according to a survey conducted by the reporter, it is known that the current waterproof silicone industry itself has ushered in a significant drop in cost. Previous early drive power manufacturers, such as
The well-known Taiwan Ming Wei power supply, which uses Dow Corning's waterproof silicone, was generally 70-80 yuan / kg.
However, nowadays, with the rapid upgrade of the quality of domestic waterproof silicone, coupled with the gradual increase in production, the price of domestically produced waterproof silicone has been reduced to 20-30 yuan / kg. Therefore, many industry peers also believe that with the further reduction of the cost of waterproof silicone, the cost of traditional potting technology and structural waterproofing will be further reduced.
“In fact, in terms of current industry trends, these two waterproofing processes are more common types on the market. In comparison with the two factors, the cost of the potting process is slightly higher, and the design cost of structural waterproofing is slightly higher. It is higher, so this is also a core difference between the two under the current market situation.†Hui Jianbo, Marketing Director of Shenzhen Leifford Optoelectronics Co., Ltd. concluded.
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Future trend
For the problem mentioned at the beginning of the article, will the future drive power industry peel off its waterproofing process from the processing process and then transfer it to the lighting manufacturer to achieve uniform waterproofing treatment to achieve the overall lighting Reduced costs? Although it is not certain, it is foreseeable that this will be a trend in the future development of power supplies.
"I don't quite agree with the idea of ​​'stripping'. Because different brand manufacturers are going to make lamps, there will definitely be different product structures, but I think this way will certainly cause the lighting manufacturers to increase their troubles to some extent. Because it is to transfer the processing technology to the luminaire, in this way, the standardization process in the entire industry will not be unified in the future.†Jiang Shuxing, general manager of Shenzhen Eurolink Electronics Co., Ltd. mentioned.
At the same time, he also believes that the current LED industry's popular view is the standardization and modularization of products. As long as the lamps and lanterns manufacturers get the parts back to assemble, the industrial division of labor tends to be more concise. If this approach is adopted, then the standardization process in the industry will gradually drift away.
"If the luminaire manufacturer has done waterproof treatment, then the problem it considers may be more comprehensive, but if the luminaire manufacturer does not understand the waterproof treatment, then it will certainly have corresponding difficulty in doing it." Shenzhen Jing Lande Yi Jirong, technical director of Lighting Co., Ltd. told reporters that after the requirements of waterproofing treatment were transferred to the lighting companies, the lighting manufacturers need to add a preventive water treatment department as a whole, which will increase the operating costs of the lighting manufacturers to some extent.
However, the reporter also learned that the current power supply waterproofing is a separate installation method, and the finished lighting products are waterproof, and the waterproof performance is measured by the waterproof rating of the external power supply. This means that if the drive power supply passes the waterproof safety test certification, then the finished finished lamp can pass the relevant safety certification.
“If the lighting industry directly purchases the bare board of the power supply, it will be more difficult to do the safety certification because it has to adapt to the various complex structures and configuration requirements in the fixture. But if my drive power is certified separately, Direct installation, then it is only a component that can pass the safety certification, there will not be too much problem." Qiu Zhonghua told reporters that the lighting manufacturers still have matching problems, the overall waterproof can indeed be to some extent Reduce costs, but if you consider the overall luminaire, then its cost will be higher, and most of the current luminaire manufacturers are not willing to invest too much in product design and safety certification. So the situation is that they are more willing to find a power supply manufacturer instead of waterproofing.
However, Qiu Zhonghua also mentioned that "in the future, from the perspective of cost reduction, the overall waterproof treatment is definitely a trend, and from the current trend of power supply and optoelectronic integration, the power supply in the future is likely to evolve into a chip form. Then the water resistance requirement for the power supply is no longer necessary, and if it is carried out in this way, the cost will be saved more."
It is foreseeable that in the future, the development trend of the LED industry will definitely enable most people to use LED lighting. Under the trend of further cost reduction, the market prospect of the integrated waterproof power supply will be very broad.
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