JPH11137107A - Device for culturing plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant culture device not giving a thermal damage to a plant. SOLUTION: This plant culture device is obtained by laminating culture chambers 3 each having at least a culture tank 2 in at least one or more stages, disposing a plant-growing plate 4 for attaching plant seedlings to the upper surface of the culture tank 2, disposing light-reflecting members 5, 7, 8 on the upper surface of the plant-growing plate 4 and on the upper ceiling surface and side surfaces of the culture chamber 3, and further disposing gas paths 10 communicating with outside air or with the adjacent chambers 3, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cultivating plants using artificial light, and more particularly to a plant cultivation apparatus for hydroponics.

[0002]

2. Description of the Related Art Hydroponic cultivation using artificial light is a method capable of growing plants without using soil and sunlight. By controlling conditions such as composition, carbon dioxide concentration, and oxygen concentration, plants can be grown artificially indoors without being affected by external conditions, and since soil is not used, fertilizer is effective. It has many characteristics such as being adversely affected by harmful microorganisms in the soil and not obstructing continuous cropping. Furthermore, since there is no occurrence of pests and insects, there is no need to use pesticides at all, and it is possible to obtain a plant with extremely high safety. Many proposals have already been made for a plant cultivation apparatus used for hydroponics using artificial light.

[0003] In artificial light cultivation of plants, light sources having high illuminance such as high-pressure sodium lamps and metal halide lamps have conventionally been used as light energy supply sources. The problem is avoided by increasing the temperature of the cultivation apparatus significantly and irradiating the cultivated plant at a distance between the light source and the light source due to the thermal failure of the plant being cultivated. In addition, the present inventor has proposed that a plant with high illuminance characteristics can be grown by using a fluorescent lamp as a light source and using a reflecting member. In some plants, even when a fluorescent lamp is used as a light source, a problem such as blackening, which is considered to be caused by a thermal problem, may occur.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a plant cultivation apparatus which does not cause thermal damage even in low temperature plants.

[0005]

According to the present invention, in a plant cultivation apparatus, at least one or more cultivation rooms having at least one cultivation tank are stacked, and plant seedlings are mounted on the upper surface of the cultivation tank. A breeding plate is provided, and a light reflection member is provided on the upper surface of the breeding plate, a ceiling surface and a side surface of the upper part of the cultivation room, and an end of the light reflection member on the ceiling surface and the side surface of the upper part of the cultivation room is external or adjacent. It is a plant cultivation apparatus provided with a gas passage communicating with a cultivation room. In addition, the growth board,
The plant cultivation apparatus as described above, wherein inclined members extending from seedling attachment portions near liquid levels of a plurality of cultivation tanks provided in parallel with each other are connected by a plane portion.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The plant cultivation apparatus of the present invention increases the amount of heat released from the plant cultivation apparatus in order to prevent thermal damage to the plant, and grows a large number of plants in a small area. It is an object of the present invention to provide a plant cultivation apparatus suitable for growing salad vegetables, lettuce, chisha, sanchu, and the like.

FIG. 1 is a diagram illustrating a plant cultivation apparatus of the present invention with reference to the drawings. FIG. 1 is a diagram illustrating an embodiment of the plant cultivation apparatus of the present invention. It is a figure explaining the example which provided the cultivation room which has a plurality of cultivation tanks in multiple stages, and is a figure showing the section of a stand. A cultivation room 3 having a plurality of cultivation tubs 2 is stacked in multiple stages on a gantry 1, a breeding plate 4 is provided on the cultivation tub 2, and a light reflecting member 5 is provided on the surface of the cultivation plate 2. Are provided, and plant seedlings 6
Is attached.

An upper reflecting member 7 is provided on an upper surface of the cultivation room, and a side reflecting member 8 is provided on a side surface of the cultivating room 3.
The fluorescent lamp 9 is attached to the upper part, and the light of the fluorescent lamp is efficiently radiated to the front and back surfaces of the leaves of the plant by these reflecting members. Each of the upper and side reflection members does not cover the entire upper or side surface of the cultivation room. For example, at both ends of the upper reflection member 7, ventilation passages 10 are provided. A passage 11 is also provided in the lower part of the vehicle.

FIG. 2 is a side view of the plant cultivation apparatus of FIG. A ventilation passage 11 is provided below the side reflection plate 8 attached to each cultivation room, so that the gas in the cultivation room makes good circulation with the outside.

FIG. 3 is a plan view of an arbitrary cultivation room on the gantry as viewed from above, and is a view showing a state where seedlings are not attached to the growing plate. A space is formed between the breeding plate 4 and the gantry 1, and a passage 10 for ventilation from the upper part to the lower part is formed.

Next, a growing plate used in the plant cultivation apparatus of the present invention will be described. FIG. 4 is a diagram illustrating a growing plate used in the plant cultivation apparatus of the present invention. The breeding plate 4 has a seedling attachment part 21 provided with a hole 20 for receiving the plant seedling 6, and the seedling attachment part 21 is connected to an inclined part 22. It is connected to the flat part 23 supported by the part 24. As a result, the seedling attachment portion of the breeding plate is placed on the liquid surface 26
Is located in the vicinity of.

The surface of the inclined portion 22 of the growth plate may be formed in a flat plate shape or a truncated cone shape. A light reflecting member 5 made of stainless steel, aluminum, or the like is provided on the upper surface of the growth plate. As the light reflecting member, a metal or a member obtained by laminating these metals and a synthetic resin can be used.

In the apparatus of the present invention, the cultivation liquid 2 in the cultivation tank 2
5 can be formed in the vicinity of the seedling attachment part 21, so that the roots of the plant are immediately immersed in the cultivation liquid in the cultivation tank, and the growth of hair roots becomes good, and as a result, Growth is also good.

On the other hand, since the length of the portion of the root extending from the growing plate that comes into contact with the air layer is extremely short, the air layer at the root portion is reduced, and the incorporation of oxygen from the air layer through the root becomes insufficient. May be dealt with by increasing the dissolved oxygen concentration by blowing air into the cultivation liquid.

The inclined portion 22 provided on the growth plate 4 includes:
The water vapor evaporated from the cultivation liquid is condensed and adheres as water drops, but the water drops fall down the inclined surface into the cultivation liquid, so they do not fall out of the cultivation tank, so dirt due to the water drops falling outside Alternatively, a decrease in cultivation liquid can be prevented.

Further, since the inclined portion acts as a guide when attaching the growing plate to the cultivation tank, a growing plate in which the distance between the connecting portion between the inclined portion and the flat portion matches the width of the cultivating tub. Since the movement of the growth plate is restricted by the wall portion 24 of the cultivation tub 2 by manufacturing, the attachment to the cultivation tub becomes easy, and a large number of the growth plates can be installed in a short time.

The size of the breeding plate may be changed in accordance with the growth of the plant, or a plurality of seedlings may be attached to the seedling attachment portion according to the size of the seedling. Further, according to the growth of the plant, in order to increase the spacing between the plants, by providing at least one growing plate without a plant between adjacent growing plates, it is possible to maintain the spacing of the growing plates with plants attached good. In addition, by using growth plates having different sizes, a desired interval may be maintained in accordance with the growth of the plant.

FIG. 5 is a perspective view illustrating an example in which a large number of growing plates are placed on three cultivation tanks arranged in parallel. On the cultivation tank 2, the growth plates 4 provided with the light reflection members 5 on the surface are arranged, and by providing a desired number of interval adjusting growth plates 4a between the growth plates 4, the growth of the plant is improved. Together, the plants can be kept from touching each other. Although the spacing adjusting breeding plate 4a does not have the holes 3 for receiving the plant seedlings, it is preferable to provide a reflecting member on the surface of the spacing adjusting breeding plate as well as other breeding plates.

Further, by making the cultivation tub a width necessary for cultivation of one plant, the size of the cultivation tub required for cultivation of one plant is reduced as compared with a case where a cultivation tub having a large width is used. Therefore, the area of the cultivation tank can be reduced. As a result, the strength of the members required for holding the cultivation tank is small, and this is particularly suitable when a multi-stage cultivation room is provided.

FIG. 6 is a perspective view for explaining a growth plate.
3 of the seedling mounting part 21 provided with a hole 20 for mounting a seedling
The growth plate is shown as being joined together by an inclined portion 22 and a flat portion 23, and the growth plate can be integrally formed by molding a synthetic resin or the like. Although any synthetic resin material can be used for the growth plate, foamed plastics such as foamed polystyrene are particularly lightweight and have excellent heat insulation properties. Dew condensation on the surface of the growth plate can also be suppressed.

[0021]

As described above, the ventilation of the plant cultivation apparatus can be made sufficient, so that even if the distance to the light source is reduced, no thermal disturbance occurs and the plant can be cultivated.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating one embodiment of a plant cultivation apparatus of the present invention.

FIG. 2 is a diagram illustrating an example of another plant cultivation apparatus of the present invention.

FIG. 3 is a perspective view illustrating a growth plate.

FIG. 4 is a perspective view illustrating an example in which a large number of growth plates are placed on three cultivation tanks arranged in parallel.

FIG. 5 is a diagram illustrating an example in which cultivation tanks are provided in multiple stages,
It is a figure which shows the cross section of a gantry.

FIG. 6 is a diagram illustrating an example of a plant cultivation apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Stand, 2 ... Cultivation tank, 3 ... Cultivation room, 4 ... Growth plate, 5 ...
Light reflecting member, 6 seedling, 7 upper reflecting member, 8 side reflecting member, 9 fluorescent lamp, 10 passage, 11 passage, 20 ...
Holes, 21: Seedling attachment part, 22: Inclined part, 23: Flat part, 24: Wall part, 25: Cultivation liquid, 26: Liquid level

Claims (2)

[Claims] In a plant cultivation apparatus, a cultivation room having at least one cultivation tub is laminated at least one or more stages, and a breeding plate for attaching a plant seedling is provided on an upper surface of the cultivation tub, A light reflecting member is provided on the upper surface, the upper ceiling surface and the side surface of the cultivation room, and a gas passage communicating with the outside or the adjacent cultivation room is provided at an end of the light reflecting member on the upper ceiling surface and the side surface of the cultivation room. The plant cultivation apparatus characterized by having provided. 2. The growth plate according to claim 1, wherein the inclined members extending from the seedling attachment portions near the liquid surface of the plurality of cultivation tanks provided in parallel with each other are connected by a flat portion. The plant cultivation apparatus according to the above.