| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for a large number of light sources to be used for the adjustment of light intensity.SOLUTION: A cold cathode fluorescent lamp is used for a lighting device 160 to irradiate plants with light. The cold cathode fluorescent lamp is adjustable in intensity as a single body. For example, light intensity is switched by temporarily turning the power supply off. A control device 100 sends a control signal to a relay circuit 140 to switch on/off the power supply to each lighting device group 150 according to a schedule set by a schedule setting part 103. |
