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China's LED industry has developed rapidly. After several years of arrogance, it has become more rational. Nationally, the number of companies involved in LED production has reached more than 10,000, and even foreigners will find it incredible.
For LED companies, it is necessary to produce products with their own characteristics. Avoid competition for homogenized products. The so-called homogenization means that there is no core technology, no innovation in manufacturing technology, technology, marketing, etc., and mutual plagiarism, eventually leading to product technology, the quality level is similar, and finally can only start the price war, seriously reducing the profit margin of the enterprise. Product innovation and upgrading core competitiveness are critical to a company. Only by increasing the technological content will it be possible for companies to get out of the woods and even stay ahead.
The current development and application requirements of LED in China have largely guided the trend of international standards, which are reflected in the following aspects:
First, the LED lights are small and the wiring is fine. In 2013, the IP conference has made no lower limit resolution for the internal wires of the lamps. When the internal wires are not subjected to mechanical force, the current is 20A/mm, and the continuous working temperature does not exceed 90 degrees. .
Second, IEC60598 and IEC61347 have significantly reduced the creepage distance clearance requirements. The additional insulation has been reduced from 2U 1750 to 2U 1000. The requirement for reinforced insulation to fall from 4U 2750 to 4U 2000 is to relax properly under the premise of ensuring safety. The above requirements can make the insulation layer, the distance from the edge, etc., can be appropriately reduced, which is advantageous for heat dissipation, improvement of light efficiency, and improvement of luminous flux maintenance rate.
Third, in terms of lightning protection requirements, the lightning protection device is required to be designed as a stand-alone device and can only be used in Class I luminaires, with instructions for use. Its lightning surge voltage is best raised from the EU standard 1KV to the US standard 3KV to adapt to the bad weather.
Fourth, in addition to pursuing high light efficiency, more emphasis is placed on improving the quality of lighting and humanization and automation. Reflected in: GB50034 standard requirements indoor (high-end lighting occasions, offices, reading rooms, classrooms, etc., color rendering index should be 80, and R90; according to the lighting color (including blue light components) on the human visual impact, (mainly affect Melatonin secretion, more emphasis on returning to the original, simulating the color temperature change of natural light one day to adjust the illumination color temperature, so there are various lamps that dimming and coloring.
Fifth, in terms of indoor lighting and photobiosafety, more attention should be paid to reducing the surface brightness of the light exit surface of lighting fixtures by using diffusion plates and the like under the premise of ensuring high-efficiency output luminous flux, which not only makes the photo-biohazard of LED lighting products The level is reduced, which can basically reach the non-hazard level, and can greatly reduce the glare. The new GB/T29294-2012 LED downlight performance standard also emphasizes the requirements of the diffuser board, and has many technical terms related to glare limitation such as specular reflection and protection angle.
Sixth, the Shanghai Road Construction and Transportation Commission engaged in LED street lighting technical conditions and test a long section of LED street lights on Shenda Road, should be said to be in the country's leading position in road lighting. In addition to the equal brightness (rather than equal illumination) design, the environmental ratio and glare control requirements fully meet the CJJ45 standard, and the appropriate light color is selected.
Seventh, a number of communication and regulation methods are applied to LED lighting. For LED lighting, regulation can expand its use and reflect humanized lighting, and reduce the workload of finding faults, and maximize energy saving. At present, wireless communication technology based on ZigBee and/or WiFi standards and power line carrier communication technology have been well applied in localized intelligent control of local illumination. The DALI control protocol and the extended DALI protocol based on the DALI control protocol have been widely used in the control of LED lighting in combination with control devices and voice sensors, light sensors, motion sensors, idle and presence sensors.
LED lighting manufacturers need to understand the overall situation of the country, continuously improve the technical level, and do a good job analysis. With the help of China's energy conservation and emission reduction policies, we will effectively promote the promotion of LED lighting products.
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