With the rapid development of LED technology and the continuous improvement of light efficiency, LED spotlight technology is also developing rapidly. The current LED spotlights are almost the replacement of traditional tungsten halogen lamps. Compared with traditional lamps, LED spotlights have significant advantages in terms of energy saving and long life. With the reduction of the cost of LED spotlights, the application of LED spotlights has gradually begun to spread. "Comprehensive analysis of LED spotlights" is divided into two episodes. The author of the episode first talks about the technical requirements of LED spotlights, common types and structures.
(1) Technical requirements for LED spotlights
At present, LED spotlights mainly replace traditional tungsten halogen lamps. Most of the relevant safety requirements refer to traditional lighting requirements, and according to the characteristics of LED lamps, a set of safety certification standards has been formed. At present, in the certification of LED spotlights, the international standards mainly include European CE and North American UL certification, and voluntary certification (CQC) is available in China.
The CE certification includes both LVD and EMC, of ​​which LVD is implemented in accordance with EN60968 (IEC 62560 will be upgraded); EMC is implemented in accordance with EN55015, EN61547, EN61000-3-2 and EN61000-3-3. In addition, LED lamps usually require additional reference to IEC 62471 for photobiosafety testing. In North America, UL safety and FCC EMC certification are usually required. UL implementation standards are UL1993, UL8750 and UL1310; FCC implementation standards are FCC PART15 Subpart B. In China, the use of voluntary certification (CQC) for LED spotlights, the implementation standards are GB24906-2010 (safety) and GB 17743-2007 (electromagnetic compatibility).
In addition, there are many standard regulations on the performance of LED spotlights. ENERGY STAR has relevant requirements in the United States; China has energy-saving certification requirements, and the implementation standard is CQC 3129-2010. Among these requirements, the color temperature, color rendering index, initial luminous flux, luminous efficacy, luminous flux maintenance rate, life, center light intensity, nominal power, power factor, and product identification of the LED spotlight are specified.
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