MULTICOLOUR LIGHT EMITTING DIODE LAMP FOR USE IN PLANT CULTIVATION, LIGHTING DEVICE AND PLANT CULTIVATION METHOD,申请号EP20100806520-传众专利搜索

MULTICOLOUR LIGHT EMITTING DIODE LAMP FOR USE IN PLANT CULTIVATION, LIGHTING DEVICE AND PLANT CULTIVATION METHOD

申请公布号：EP2462797(A1)

申请号：EP20100806520

申请日期：2010.08.05

申请公布日期：2012.06.13

申请人：

SHOWA DENKO K.K.

发明人：TAKEUCHI RYOUICHI

分类号：A01G7/04;F21S2/00;F21V33/00;F21Y101/02;H01L25/075;H01L33/48;H05B37/02

主分类号：A01G7/04

摘要：In an illumination apparatus for plant growth using LEDs, a light source emitting mixed color light of red and blue is dominant light source. However, actually, the luminescence intensity of red light is weaker than that of blue light, and the color is adjusted by the number of lamps used. Thus, a small number of blue LEDs are interspersed among a large number of red LEDs, and there is a problem in that it is not possible to make irradiation of blue light uniform. The present invention provides a multicolor light emitting diode lamp in which a blue LED and a AlGaInP-based red LED having high luminescence efficiency, balancing with the blue LED are mounted in the same package. The red LED includes a light emitting section including a light emitting layer having a composition formula, (Al X Ga 1-X ) Y In 1-Y P (0‰¤X‰¤1 and 0<Y‰¤1). The red LED emits at least as many photons as the blue LED when the same electric current is flowed. For example, when a strong red light is desirable for plant growth, by mounting two red LEDs and one blue LED, a desired mixed color is obtained with one lamp, and irradiation of light can be made uniform.