| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydroponics system capable of introducing natural light inside the system and raising objects to be cultivated at low cost and efficiently.SOLUTION: A daylighting device 3 has a pair of reflection boards 31a which are erected in parallel with a cultivation surface 23 of a cultivation panel 21 that a hydroponics unit 2 includes, and irradiates seedlings p transplanted to the cultivation panel 21 with light from an emission hole 32 created in the reflection boards 31a in a process where natural light taken from a daylighting port 30 propagates opposing reflection planes of the reflection boards 31a while repeatedly reflecting the planes.SELECTED DRAWING: Figure 1 |
