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In a plant culture apparatus, plants being cultured are accommodated in a body. A culture bed is arranged within the body for culturing the plants. An illuminating device is arranged within the body for emitting a light to the plants on the culture bed. A gas-conditioning device is mounted to the bo

In a plant culture apparatus, plants being cultured are accommodated in a body. A culture bed is arranged within the body for culturing the plants. An illuminating device is arranged within the body for emitting a light to the plants on the culture bed. A gas-conditioning device is mounted to the body for recirculating gas therethrough. The illuminating device includes a lighting unit for emitting ultraviolet rays to the plants, and a transducing unit arranged below the lighting device for transducing the ultraviolet rays emitted from the lighting unit, to visible radiation. The transducing unit has long-wave absorbability and is formed by a plate element having its entire surface which is coated with phosphor.

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A plant culture apparatus comprising: a body within which a plurality of plants to be cultured are disposed; a culture bed arranged within said body for culturing the plants; illuminating means arranged within said body for emitting a light to the plants on said culture bed; and air-conditioning mea

A plant culture apparatus comprising: a body within which a plurality of plants to be cultured are disposed; a culture bed arranged within said body for culturing the plants; illuminating means arranged within said body for emitting a light to the plants on said culture bed; and air-conditioning means mounted to said body for recirculating air through said body and removing heat from said body which is created by said illuminating means; said illuminating means comprising: lighting means for emitting ultraviolet rays to said plants; and transducing means disposed below said lighting means for transducing the ultraviolet rays emitted from said lighting means to visible radiation when the ultraviolet rays pass through said transducing means, such that the visible radiation is uniformly emitted to said plants; said transducing means having long-wave absorbability and comprising plate means having a surface which is entirely coated with phosphor; wherein said air-conditioning means comprises: an introducing duct means for introducing air into said body, said introducing duct means being mounted to an upper surface of said body; and discharge duct means for discharging air from said body, said discharge duct means being mounted to a peripheral surface of said body at a location above said transducing means.