???? A light-emitting-diode lamp is a solid-state lamp that uses light-emitting diodes (LEDs) as the source of light. The term? LED Tube is also colloquially used. " LED Tube" may in general refer to organic light-emitting diodes (OLED), or polymer light-emitting diodes (PLED) technologies as well as conventional semiconductor light- emitting diodes; although the OLED and PLED technologies are not yet commercially available.We take a look the LED Tube's development.

????? In recent years, as "diode" technology has improved, now "high power" light-emitting diodes with higher lumen output are making it possible to replace A19, MR16, PAR, and other incandescent, halogen, and even fluorescent lamps with LED Tube. In other words LEDs Tube can be made interchangeable or retrofitted with other types of traditional lamps. Diodes use direct current (DC)? electrical power, so LED Tube must also include internal circuits to operate from standard AC voltage. LEDs are damaged by being run at elevated temperatures, therefore LED Tube typically include heat management elements such as heat sinks and cooling fins. LED Tube offer long service life and high energy efficiency, but initial costs are higher than those of .