Safety requirements specification of LED lamps

　　The so-called LED lamps, as the name suggests, refers to lighting products using LED (Light-emittingDiode, light-emitting diode) technology as the main fat source. LED is a solid-state semiconductor components, their use of forward flow of current into the semiconductor pn junction coupling place, after combining with each other and then separated by semiconductor negatively charged electrons and positively charged holes two carriers, and produce photons launch, different types of LED can emit between the infrared to blue, and violet to ultraviolet light, such as between the different wavelengths of light. In recent years, new development is coated with a fluorescent powder blue LED on, the blue LED into white light LED products. This operation generally requires matching driver circuit (LEDDriver) or power supply (PowerSupply), the main function of the drive circuit or power supply is to convert AC voltage DC power supply, and also completed consistent with the LED voltage and current to mating the drive assembly.

　　LED lighting bulbs, small size, light weight, and epoxy resin, can withstand high-intensity mechanical shock and vibration, not broken, and the brightness decay cycle is long, so its service life up to 50,000-100,000 hours, far more than the traditional 1,000 hours of incandescent light bulbs and fluorescent tubes to 10,000 hours. Because LED lamps use life of up to five to 10 years, so not only can significantly reduce lamp replacement costs, but also because of its characteristics with minimal current to drive the LED's, in the case of the same lighting effects, the power consumption is only half fluorescent tubes, so also has the advantages of LED energy saving and energy saving.

　　With the rapid development of manufacturing technology in the past decade, the above-mentioned drawbacks, including LED thermal resistance decreases, the light quality is also ascension. 2008, in addition to cold white LED luminous efficiency has reached 100Lm / W, while the warm white LED luminous efficiency, is expected in 2010, can also be increased from the current 70Lm / W to 100Lm / W.

　　Responding LED light manufacturing technology improvement, application level becomes wide, and the existing fixtures UL product safety standards, there is no clear standard for the LED light source, so in 2005, UL safety specifications set about drafting LED lighting products mainly based -Subject8750, to regulate the basic structure of a general assessment, to supplement lighting product safety standards, and plan for the future will come into effect become UL8750 safety standards, as all LED light source for lighting product safety testing .