| 摘要 |
PROBLEM TO BE SOLVED: To provide a plant cultivation LED light source which has a simple configuration, enables easy adjustment of a light amount ratio of blue region light to red region light, and is capable of increasing light extraction efficiency, without increasing an area for mounting.SOLUTION: In a plant cultivation LED light source, a plurality of LED packages (10A'-10B'- 10F), each of which includes at least one blue LED chip mounted on a substrate (2B) and a red phosphor-mixed resin, are arranged in a line on a mounting substrate having a strip shape or in a matrix on a mounting substrate having a rectangular shape. In each of the plurality of LED packages (10A'-10B'- 10F), the light amount ratio of light with a blue emission wavelength to light with a red emission wavelength is within a range of 1:1-1:3.SELECTED DRAWING: Figure 12 |
