Rational design of floodlighting involves more practical engineering problems, and lighting selection is one of the more prominent issue. According to the survey, the most active airliner using traditional incandescent (especially halogen) or fluorescent lighting as the cockpit, while the new airliner, such as A380 and B787 are used to varying degrees LED. LED lighting is introduced into the cockpit, for it is in some ways demonstrated advantages, such as energy saving, long life, good stability and shock resistance.
LED lamps using the PN junction minority carrier recombination and more to achieve luminescence emission wavelength corresponds to the band gap of the PN junction. LED lighting is used as a light source having a small size, high reliability, cold start, adjustable brightness and good, low-voltage DC operation more safety. LED belongs to a light source, the light emitting process, light energy directly into electrical energy, while maintaining the same brightness and under ordinary incandescent lamp, its power consumption is only one of the latter is. LED light source is a solid state with no moving parts and the easily damaged parts (such as filament, etc.), anti-vibration performance. LED life is generally up to 20,000 to 100,000 hours, far higher than incandescent lamps, and fast response. Compared with fluorescent lamps, LED contains no mercury harmful to human health, non-polluting sources.
The use of LED light source to improve lighting performance lighting technology is the development direction of the aircraft. Due to the high reliability of the LED (MTBF values ??floodlights foreign suppliers to provide up to 50,000 hours), it can significantly reduce the failure rate of aircraft lighting systems, reducing aircraft maintenance costs.