The advantage of solar energy lawn lamp use led light source

Most of today's lawn lamp use LED as light source, LED long service life, can reach 100000 hours, low work voltage, very suitable for application in solar energy lawn lamp. Especially in LED technology has gone through its key breakthrough, and its characteristics in the past five years,

but most lawn lamp USES the LED as light source, LED long service life, can reach 100000 hours, low work voltage, very suitable for application in solar energy lawn lamp. Especially in LED technology has gone through its key breakthrough, and its characteristics in the past five years has greatly improved, the cost performance also has a larger increase. In addition, LED by the low voltage dc power supply, the light source control of low cost, make adjust light and shade, frequent switch are possible, and no adverse impact on the performance of the leds. Can also easily control the color, change the distribution of light, produce dynamic mirage, so it is especially on the solar energy lawn lamp. But the LED has its many inherent features, if do not pay attention to when using can cause adverse consequences. LED the luminous efficiency of sells on the market at present only can reach 15 LMW, only three color gezer energy-efficient lighting a third, three color gezer efficient energy-saving lamp luminous efficiency can reach 50-60 LMW, look from the price, the cost of production per 1 m at present: three color color efficient energy-saving lamps ( Including electronic ballast) 0. Phi 022 yuan, 2002 5 mm white LED price for 1. 9-3. 0 yuan, at present the cost of production per 1 m price six to one. From the point of view of life, three color color efficient energy-saving lamps ( Including electronic ballast) Life can reach 6000 h, the LED can reach more than 100000 h, ostensibly LED life is trichromatic color high energy-saving lamps ( Including electronic ballast) Dozens of times, but that is not the case. Currently most adopts ultra-high bright white LED, solar lawn lamp it under 20 ma ultra-high bright white LED light through maintaining rate of initial strength (50% of the time Life) Less than 10000 h, LED street lamp, electric light source is used to prove the above argument of fudan university. In many cases, that is to say, at present, the LED is not the best solar lawn light source, unless it is cheap to use fixed number of year only 1-2 years of solar lawn lamp, or is under 1 w solar energy lawn lamp. For more than 1 w solar lawn lamp, it is best to use tricolor gezer efficient energy-saving lamps. There are some solar energy lawn lamp with just 30 to 40 super bright white LED, the input power, for more than 2 w in this case if with three color gezer efficient energy-saving lamps, the price is only 1/10 of the leds, luminous flux is 4 times, the good news is that now has successfully developed 2-10 w low voltage dc trichromatic color high efficiency energy-saving lamps, service life can reach 6000 h. According to the above analysis, we believe that the small power under 1 w solar lawn lamp, has to adjust light and shade, frequent switch function, the general should use LED as light source. But paying special attention to in using ultra-high bright white LED light retention problem, otherwise easy to cause the quality accident. For larger power solar lawn lamp, currently using three color gezer energy-efficient lighting is quite reasonable. Here is to emphasize that the analysis of the above conclusion is just the when LED technology levels increase, prices fall, the above conclusions need to be adjusted.