LED Street lights efficiency, long life, green features being recognized and valued, and with nearly 10 years LED Street lights technology has made rapid development, the relevant LED secondary optics design technology has matured, using semiconductor light source to replace the existing city road lighting semiconductor lighting has become a major trend in the field, increasing people’s attention. But to a lot of promotion of LED lights, LED lights on the product must have a unified technical standards and measurement standards require some mandatory performance indicators to ensure product performance and quality. LED lights products from the current status of technology development point of view, the most important is the whole lamp life, the entire lighting efficiency and lumen curve these key indicators.
LED Street lights as a system, affecting the performance of many factors, such as power-driven features, optical components weather resistance, the structure of the whole lamp waterproof and dustproof performance will seriously affect the system’s optical efficiency and lifetime, namely light LED The optical properties of the chip or module does not completely describe the performance of lamps, it must be the whole lamp aging test for compliance system actual performance data.
As outdoor lighting products, LED Street lights, its reliability must be carried out on-site long-range test, the time span often require thousands of hours, and the scene of long-range measurement accuracy due to the environment, test methods and other factors interference with laboratory experiments room environment have a greater difference in the test results. How to measure the LED Street lights life?
Life expectancy forLED Street lights measurement methods, relevant national standards are given in the life expectancy of LED lights measurement method, the method provides for certain technical specification Aging LED Street lights under the conditions and within the specified temperature surveillance LED Street lights housing temperature rise. Every 100 to 300 hours recording LED street lamp under a certain distance from the point illuminance measured until 6000 hours. If not yet reached to 6000 hours life LED Street lights , you can use the law of decrease of illumination lamp extrapolated lifetime of LED lights, that life expectancy. Measured in life expectancy and extrapolation calculations, the LED lights on the luminescence properties of 1000 hours as the initial value, the LED Street lights flux extrapolated down to 70% of the initial value of the time of life expectancy.
LED Street lights at all levels currently associated with the standards and norms indicators, all of the LED Street lights is made stringent requirements, the basic requirements after 3000 hours of continuous light, street light decay is not more than 2%; to achieve such high lumen testing requirements for various types of measurement error caused by the key factors must be analyzed and appropriate compensation. Therefore, to want to achieve the desired goal lamp life, we must choose the regular manufacturers of LED Street Lights, reduced due to the poor quality of the situation has led to shortened life.