Inherent advantages and disadvantages of led fluorescent lamps.
Due to the power supply, built-in power supply heat is added to the tube, assuming the power efficiency of 88%, so have the quantity of heat of 2.4 W will disperse, equivalent to a 30% increase in heat, that is to say, a total of 10.4 W power can't send out. It also makes the LED's heat dissipation more difficult or, in other words, shorten the life of the LED. And the length of the power supply is about one 5 of the length of the tubes, power supply, by the hot focus in this section, also made close to the power of the leds are more hot baking, so life is better than the rest of the LED is shorter, tubes, when damaged, close to the power of a black out first. It can be assumed that LED fluorescent lights with built-in power will not last more than 10,000 hours.
And put the power in the pipe, and the power supply itself must bear very high environmental temperature, produced by the LED this greatly reduce the service life of the electrolytic capacitors in the power supply, also reduce the service life of the lamps and lanterns.
The cost of using an LED fluorescent lamp with a built-in power source is 10,000 hours, compared with 50,000 hours for an external power source. Not only that, but in the course of use, either the LED is damaged or the power is damaged, usually both are discarded together. The LED fluorescent lamp of external power supply can be broken which one is lost.
In addition, the built-in power supply also increases the cost of recycling electronic waste. Because the power must be removed and then processed separately.
External power supply, not only high efficiency, long life, but also can increase manual dimming or automatic dimming and other special functions, these are incomparable with the built-in!