LIGHTING APPARATUS FOR CONTROLLING PLANT DISEASE
First Claim
1. A lighting apparatus for controlling a plant disease which emits a light including ultraviolet rays to a plant, comprising:
- a UV light source which emits UV-B and UV-C in which a wavelength component of approximately 250 nm or less is cut off in UV-C;
a visible light source which emits visible light; and
a controller which controls an operation of the UV light source and the visible light source, whereinthe controller controls the respective light sources and repeats a light irradiation which has an irradiation pattern of combining a first light irradiation, in which the UV-C and UV-B and the visible light are superimposed, with a second light irradiation which is made up of the visible light alone at least twice a day.
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Accused Products
Abstract
A lighting apparatus for controlling a plant disease is provided to reliably inhibit a spore formation and a hyphal growth of a filamentous fungi, reliably induce a disease resistance, prevent a leaf scorch, and promote a growth of a plant. A UV light source repeats a light irradiation which has an irradiation pattern of combining a light irradiation, in which UV-C and UV-B and a visible light are superimposed, with a visible light irradiation alone at least twice a day. The emission of UV-B and UV-C enables the reliable inhibition of the spore formation of the filamentous fungi, for example. Its intermittent emission prevents a plant from getting too used to ultraviolet rays, promotes a generation of an antibacterial substance, for example, and prevents a leaf scorch. The continuous emission of the visible light enables a promotion of a growth of the plant.
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Citations
12 Claims
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1. A lighting apparatus for controlling a plant disease which emits a light including ultraviolet rays to a plant, comprising:
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a UV light source which emits UV-B and UV-C in which a wavelength component of approximately 250 nm or less is cut off in UV-C; a visible light source which emits visible light; and a controller which controls an operation of the UV light source and the visible light source, wherein the controller controls the respective light sources and repeats a light irradiation which has an irradiation pattern of combining a first light irradiation, in which the UV-C and UV-B and the visible light are superimposed, with a second light irradiation which is made up of the visible light alone at least twice a day. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification