Patent ID: 9485919
Filing Date: 2016-11-08
CPC Classification: A01G,F21Y,H01L,Y02P

Claim Text:
1. A multicolor light emitting diode lamp for plant growth comprising: two first light emitting diodes, each including a pn-junction type light emitting section having a light emitting layer which has a composition formula, (AlXGa1-X)YIn1-YP (0≦X≦0.1 and 0<Y≦1), and in which a peak luminescence wavelength is not less than 655 nm and not more than 675 nm, and each of which emits red light; and one second light emitting diode including a light emitting layer which has a composition formula, GaXIn1-XN (0≦X≦1) and in which a peak luminescence wavelength is not less than 420 nm and not more than 470 nm, and which emits blue light, wherein the two first light emitting diodes and the one second light emitting diode are mounted on a surface of a substrate sealed in a same package, the two first light emitting diodes and the one second light emitting diode are directly electrically connected in series to one another, or the one second light emitting diode is directly electrically connected in parallel to the two first light emitting diodes which are directly electrically connected in series to one another, a photon flux R [μmol·s−1] of the two first light emitting diodes and a photon flux B [μmol·s−1] of the one second light emitting diode mounted on the multicolor light emitting diode lamp satisfy a relation of R>B per a same amount of an electric current simultaneously flowing through the two first light emitting diodes and the one second light emitting diode, and, and a distance between two adjacent light emitting diodes of the first and second light emitting diodes is within 10 mm.