| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet ray irradiation system having a simple structure and capable of detecting an irradiation history of ultraviolet rays. SOLUTION: This ultraviolet ray irradiation system comprises setting an irradiation history indicating part 43 for indicating an irradiation history of a fluorescent lamp 41, on one end of the fluorescent lamp 41 which irradiates ultraviolet rays to farm products to be cultivated in an agricultural greenhouse. The irradiation history indicating part 43 is attached to a water-proof pipe 42 surrounding the fluorescent lamp 41, and is composed of an outer fence part 431 which shades light excluding irradiation light of the fluorescent lamp 41, and a storage light part 432 which is set inside the outer fence part. Light irradiated from the fluorescent lamp 41 is emitted from an opening part 433 and stored in the storage light part 432. The fluorescent lamp 41 goes out when a human sensing sensor detects that a farm worker enters a greenhouse. The farm worker judges whether the fluorescent lamp 41 lights up or not until just before entering a greenhouse through observing the storage light part 432 from an observation window 434 of the irradiation history indicating part 43, and confirms a lighting history of the fluorescent lamp 41 from a radiation graduation of the storage light part 432. COPYRIGHT: (C)2009,JPO&INPIT
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