First of all, high light efficiency of the chip : the light effect of LED tube light is 100LM / W. The light effect of fluorescent is around 65LM / W . The difference between the LED tube light and fluorescent is nearly doubled, and the major of chip manufacturers continue to develop the performance of chip, the current highest light effect of chip of LED tube light invented by CREE has reached 130LM / W, it is entirely possible to reach more than 3 times more than that of fluorescent lamps in future.
Second, the high efficiency : it is the effective optical efficiency of the LED tube light , because the fluorescent lamp emit the light at 360 degrees , the light emitted toward the side of the bracket substantially produce nothing efficient. So many fluorescent lamp uses a reflective shade ,which is to reflect part of the light wasted , but even used with reflector, the lighting efficiency of fluorescent is only around 70%. The LED tube light is mostly glowing at 120 degrees , so all light is almost effective light .
The light efficiency of fluorescent is only 55LM / W, 40W fluorescent issues a total of 2200LM, but of which the lighting efficiency is just 70% , the effective lumens is 1540LM, and the light effect of LED tube light is 100LM / W, so just 16W LED tube light can reach only 1600LM, which is only 40% of the power of fluorescent enough, the saving rate is above 20%.
Third, the high power efficiency :as we all know，the ballast and starter need to be installed in ordinary fluorescent lamps so that the tube can safely operate. Ballast and starter are power , so the the actual power of these two parts together with the tube will reach 45W or more , the efficiency is reduced to 85%. The power efficiency of LED tube light is usually more than 20% ,the real power of 18W LED tube light is only 12W .Browsing http://www.ledclan.com/ for more information about LED tube light.
Article from http://www.lighting-ledlight.com/index.php/why-choose-led-tube-light-instead-of-fluorescent/
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