| 摘要 |
FIELD: electricity.SUBSTANCE: invention is related to a lighting facility based on white light-emitting diodes and excited by pulse current. The facility includes blue, violet and ultraviolet LED chips packed inside and a luminescent coating using a luminescent material. The luminescent material represents a combination (1) or (2) of the luminescent material A with blue afterglow and of a yellow luminescent material. The yellow luminescent material B is capable of light emission when blue, violet and ultraviolet LED chips and/or the luminescent material A with blue afterglow are excited. The combination (1) represents the following combination: 5% SrMgSiO:Eu,Dy+ 15% CaSrS:Bi+ 20% SrAlO:Eu,Dyand 15% SrSiO:Eu,Dy+ 20% CaMgSiO:Eu,Dy+ 25% YAlO:Ce, while the combination (2) is represented in the following way: 35% CaS:Br,Naand 25% YO·AlO·SiO:Ce·B·Na·P + 10 %CaS:Sm+ 15% YOS:Mg,Ti + 5% SrSiO:Eu,Dy+ 10% CaMgSiO:Eu,Dy. At that the lighting facility based on white light-emitting diodes excites the LED chips by pulse current with a frequency of at least 50 Hz.EFFECT: invention allows improving stability of luminescence and reducing the thermal effect.5 cl, 6 dwg, 3 tbl, 2 ex |
