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Control the color, changing the distribution of light，resulting in dynamic mirage is possible, so it is particularly suitable for application
in solar lawn. Many of its inherent characteristics, the use if attention will be adverse consequences. But the LED current sales in the market LED luminous efficiency can only reach 15Lm / W, can only achieve three-color color energy efficient lamps 1/3, the luminous efficiency three-color color energy efficient lamps can reach 50 Lm / W ~ 60Lm / W
Price-wise, the current production cost per Lm: the three-color color energy efficient lamps (with electronic ballasts) 0.022 yuan, 2002 f5mm white LED price of 1.9 to 3.0 yuan, the current high production costs per Lm, the price difference poor.
From the point of view life, three-color color energy efficient lamps (with electronic ballasts) of life can reach 6000 hours, LED can reach more than 100,000 hours, on the surface, LED life is a three-color color energy efficient lamps (including electronic Ballast) a few times, but that is not true. Most current solar lawn lamp ultra bright white LED, its super bright white LED lumen maintenance at 20mA reach the initial intensity of 50% at a time (life) is less than 10,000 hours, Fudan University have demonstrated above-mentioned light source argument. This means that in many cases now is not the best solar LED lawn light, unless it is low-grade, the age of only 1 to 2 years of solar lawn, or less than 1w solar lawn.
For more than 1W solar lawn, preferably using a three-color color energy efficient lamps.
There are a number of solar lawn by 30 to 40 super bright white LED, input power 2W or more, in this case, if the if the three-color color energy efficient lamps, LED price is only 1/10 of the original luminous flux four times, and now has successfully developed low voltage DC 2 ~ 10W tri-color color energy efficient lamps, life can reach 6000 hours.
Based on the above analysis, we believe there is adjust the brightness, 1W power solar lawn little less frequent switching function, the general should use LED as a light source. However, the use of ultra-bright white LED lumen maintenance with particular attention to the issue, otherwise easily lead to accidents. For larger power solar lawn, currently using a three-color color energy efficient lamps is reasonable. It should be emphasized that the above conclusion is analyzed only when LED technology after improving the level of prices, the need to change the above conclusions. For solar garden lights, from reliability, cost performance, color temperature, and luminous efficiency aspects into account, we believe that the ideal light source should now be three-color color energy efficient lamps.
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