JPH0763274B2 - Plant cultivation equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a plant cultivation device for cultivating a plant such as a vegetable by illuminating an artificial light source.

(Prior Art) A device for cultivating a plant with an artificial light source is widely known, and one example thereof is shown in FIG. In this conventional device, a growth chamber b and a wind tunnel c for circulating air are provided in a wind tunnel type growth cabinet a, and a fan d circulates the air and adjusts the wind speed. Temperature adjusting means e,
A temperature adjusting means f and a CO ₂ concentration adjusting means g are provided to adjust the temperature, humidity and CO ₂ concentration in the growth cabinet a. An artificial light source h such as a plurality of fluorescent lamps is arranged above the cultivation room b, and a cultivation floor i is arranged below the cultivation room b. The culture solution is supplied from the culture solution supply means j to the cultivation floor i. Then, as shown in FIG. 7, the plant A grows in the adjusted environment by being given light, a culture solution, and CO ₂ .

The above-mentioned plant cultivation device has a one-step structure in which the artificial light source h and the cultivation floor i are each one layer, but in place of this, there is a multi-step structure. There is also a type in which the cultivation floor is supported by an endless conveyor and the cultivation floor circulates in the cultivation room as the endless conveyor moves, or a cultivation bed is arranged in a cylindrical shape around an artificial light source. .

(Problems to be Solved by the Invention) The above-mentioned conventional example has the following problems.

In a plant cultivation device using an artificial light source, the power consumption for lighting accounts for a large proportion of the production cost, so it is important to increase the lighting efficiency in order to reduce the production cost. By the way, in the above-mentioned conventional example, the artificial light source is arranged above, and the traditional arrangement method of arranging the cultivation floor below is adopted, so that the light emitted above the artificial light source such as a fluorescent lamp cannot be effectively used. There's a problem.

The above-mentioned conventional example is a relatively large-scale one equipped with a wind tunnel, temperature adjusting means, etc., and may be called a plant factory. Therefore, it is impossible to bring this into the home or the like and use it as a home garden. For example, it would be great if a room in a condominium was equipped with a plant cultivation device for self-consumption, and vegetables and the like could be grown easily and in a short period of time, but it is difficult to realize this from a conventional example.

The above-mentioned conventional example has a relatively large scale, and it is difficult to change the cultivation area and to cultivate multiple varieties. The above conventional example cannot meet the demand to easily and easily increase the cultivated area as needed or to give optimum environmental conditions to plants of each variety in multicultural cultivation.

There are cases where it is desired to cultivate high density plants on a limited floor area. It is no exaggeration to say that success or failure is determined by effective use of the floor area particularly in domestic cultivation and shopping center cultivation, but the above-mentioned conventional example is insufficient in this respect.

Japanese Patent Application Laid-Open No. 60-
There is a known example related to Japanese Patent No. 94035. In this publicly known example, a total of four artificial light lamps are arranged at 90 ° intervals on a cylindrical surface in the center of a cultivation room, plants are arranged on a cylinder around the artificial light lamp, and a holding device for holding it is rotated. It is provided as possible.
According to this, the amount of cultivation per floor area can be increased and the light irradiation surface can be effectively used, but there are still the following technical problems.

That is, since the artificial light lamp for irradiating the artificial light of this known example is constituted by a reflection type (see, for example, Japanese Patent Laid-Open No. 59-106230), a pair of artificial light lamps are mutually different from each other. The irradiation light on the opposite side is blocked by the lamp itself and the light amount is lost at the time of reflection, so that there is a problem that the irradiation light of the artificial light lamp cannot be used effectively.

Further, in this known example, it is difficult to control the solution supply amount to the plant which is arranged in a tubular shape in the holding device and is held, because the holding device is rotated, and therefore maintenance management for normal growth of the plant is performed. However, it is inevitable that the structure of the rotation drive device of the holding device becomes complicated.

(Means for Solving the Problems) The present invention aims to solve the above problems, and the following first
It includes the invention and the second invention.

1st invention arrange | positions the cultivation floor surface arrange | positioned so that a plant may grow to a substantially right-angled direction in a substantially vertical direction, and said 1 pair of cultivation floors arrange | positioned in parallel so that the said cultivation floor surfaces may face each other, With an artificial light source arranged between the cultivation floor surface, the artificial light source is a predetermined value sufficient to grow the plant in the direction substantially perpendicular to the cultivation floor surface in which the light intensity overcomes the anti-gravity tendency. It is characterized in that the plant is irradiated with light having the photosynthetic effective photon flux density described above.

The first aspect of the present invention is characterized by deviating from the conventional idea that the light is on the top and the cultivation bed is on the bottom.
As is well known, a plant has a light-like property that tends to grow in the direction opposite to the direction of gravity and also has a light-like property that tends to grow in the direction of light. For example, when arranging a cultivation bed above an artificial light source and cultivating a plant so that it grows downward on this cultivation bed, when anti-gravity tendency is dominant, it grows in a J-shape as the plant grows. The bending growth direction is changed from downward to upward, and the sufficient growth cannot be achieved (the conventional example shown in FIG. 7 is based on this). However, when the light habit becomes dominant and the anti-gravity habit becomes negligible, the plants in the cultivation bed placed above the artificial light source can grow downward normally.
The present inventor has confirmed through various experiments that when the amount of light of a light source for a plant exceeds a certain value, the light tendency becomes dominant and the anti-gravity tendency becomes negligible. This also applies to the case where the cultivation floor is arranged such that the cultivation floor surface is in a substantially vertical direction and an artificial light source is arranged on the side thereof as in the first invention, and the light amount of the light source is adjusted. ,
Normal growth of the plant is realized by balancing the light habit and the anti-gravity habit.

As the artificial light source used in the first invention, it is preferable to use a plurality of fluorescent lamps arranged in parallel. In the first invention, a pair of cultivation floor and artificial light source are arranged in a cabinet, the cabinet is of a closed type, and an external culture solution supply device and an environmental gas adjusting device are connected to the cabinet via a pipe. It is preferable to have a configuration.

The second invention is a pair of cultivating floors in which the cultivating floor surfaces arranged so that the plants grow in a substantially perpendicular direction are arranged in parallel so as to face each other, and the cultivating floor surfaces are arranged between the cultivating floor surfaces. An artificial light source for irradiating the plant with light having a photosynthetic effective photon flux density of a predetermined value or more sufficient to grow the plant in a direction substantially perpendicular to the cultivation floor surface overcoming the anti-gravity tendency. And each cultivation floor are separately housed in each of the three cabinet constituent elements that make up the cabinet, and the cabinet constituent elements are configured to be separable from each other. .

The following two modes are typical as specific modes of the above configuration. 1st aspect arrange | positions the cabinet component which accommodates the said artificial light source on a vertical plane, and accommodates the cultivation floor provided with water retention on the vertical plane located on the both sides.
Disposing a pair of cabinet components. Second
According to the aspect, the cabinet constituent requirements for accommodating the artificial light source are arranged on a horizontal plane, and a pair of cabinet constituent elements for accommodating the cultivation floor having water retention property are arranged on the horizontal planes located above and below the cabinet. is there.

In addition, the second invention comprises the following devices, that is, a plurality of cultivation units each having an artificial light source, a cultivation floor and a cultivation liquid supply means in a cabinet, and a single cultivation liquid supply device, each cultivation unit being a pipe. It can be implemented in a plant cultivation device connected to a cultivation liquid supply device via.

In this device, a single environmental gas adjusting device may be further added, and the environmental gas adjusting device and each cultivation unit may be connected via a pipe. In this case, it is preferable that the culture solution supply device and the environmental gas adjusting device are incorporated in the same control box.

Further, in the above apparatus, it is preferable to arrange a plurality of cultivation units so as to be overlapped with each other, but the following two modes are typical as specific modes thereof. In the first mode, a plurality of cultivation units are arranged so as to be vertically stacked. In the second mode, a plurality of cultivation units are arranged so as to be overlapped in the left-right direction.

In the first aspect, it is preferable that all or part of the cultivation unit is configured to be extrudable. In addition, as the cultivation unit used for this, it is optimal to use the one in which the artificial light source is arranged on the horizontal plane in the cabinet and the cultivation floor is arranged on each of the horizontal planes located on both sides of the artificial light source in the cabinet. is there. Further, it is rational to use a cabinet having a rectangular parallelepiped shape having a minimum height with respect to the width and depth.

In the second aspect, it is preferable that each cultivation unit is guided and supported so as to be movable in the left-right direction. At this time, it is preferable that the cabinet opens to the left and right around the rear pivot, and the cultivation floor is supported on both sides of the cabinet. Further, as the cultivation unit, it is optimal to use an artificial light source arranged on the vertical plane in the cabinet and a cultivation floor arranged on each of the vertical planes located on both sides of the artificial light source in the cabinet. . Furthermore, it is rational to use a cabinet having a rectangular parallelepiped shape having a minimum width with respect to height and depth.

(Operation) According to the first invention, the cultivation floor surface is arranged in a substantially vertical direction 1
Since the artificial light source is arranged between the pair of cultivation beds, not only the light emitted to one side of the artificial light source but also the light emitted to the other side can be effectively used, and the power cost for lighting can be reduced. it can. And since the cultivation floor is provided with water retention, there is no hindrance even when the cultivation surface faces to the side,
Moreover, by adjusting the amount of light of the artificial light source, as a result that it is possible to balance the light susceptibility and the anti-gravity habit, both sides of the artificial light source, that is, left and right can be arranged as described above, High density cultivation of plants becomes possible. The first
According to the invention, since the pair of cultivation beds and the artificial light source are arranged substantially parallel to the vertical direction, the floor area for installing the apparatus can be made small, which is most suitable for use in a home garden. In the first aspect of the invention, if an external culture solution supply device or an environmental gas adjustment device is connected to the cabinet via a pipe and microcomputer control is performed, even an amateur can cultivate plants such as vegetables at home. .

According to the second aspect of the present invention, while having the same operation as the first aspect of the present invention, the cabinet constituent element for accommodating each cultivation floor and the cabinet constituent element for accommodating the artificial light source are configured to be separable from each other. Can be smoothly replaced, and cultivation and harvesting of plants can be smoothly performed in units of cabinet components, and it is easy to plant different kinds of plants on their respective cultivation beds.

(Embodiment) FIGS. 1 to 3 show a first embodiment of the present invention. The first embodiment is composed of a plurality of cultivation units 1, a control box 2, and an air supply pipe 3, an exhaust pipe 4, and a liquid supply pipe 5 that connect them.

Each of the cultivation units 1 is formed in the same structure, a plurality of fluorescent lamps 6 as artificial light sources, cultivation beds 7 arranged on both sides of these fluorescent lamps 6, and a culture solution that distributes the culture solution to the cultivation floor 7 Distributing means 8 and cabinet 9 for housing these
It consists of The cultivation floor 7 is formed in a box shape from rock wool in this embodiment, but as an alternative to this, water or nutrient solution is dripped from above or intermittent spraying from the side to the planting part. Cultivation unit 1 while maintaining sufficient water retention after being supplied by
On the other hand, if it has a property that the initial mounting position can be secured against gravity, it can be appropriately selected.

The cabinet 9 is formed in a rectangular parallelepiped shape having a height of 2 m, a depth of 2 m, and a width of 1 m (hence, it is a rectangular parallelepiped shape having a minimum width). The left outer box 9l, the right outer box 9r, and the fluorescent lamp support frame 9c are three. It consists of two cabinet components. Left outer box
9l and the right outer box 9r are formed in a symmetrical shape, and the outer boxes 9l and 9r form a cabinet exterior body, and the fluorescent lamp support frame 9c is housed therein.

The fluorescent lamp support frame 9c is located in the center of the space inside the cabinet 9 and is formed in a rectangular frame that covers most of the vertical cross section. A plurality of horizontally arranged fluorescent lamps 6 are arranged and supported on the support frame 9c at equal intervals in the vertical direction. Further, as shown in FIG. 3, the support frame 9c has a rear portion pivotally supported by a pivot shaft 10a, and is rotatable left and right about the pivot shaft 10a.

The front plates 11 of the left and right outer boxes 9l and 9r each have a transparent glass window 12 so that the inside of the cabinet 9 can be observed. Moreover, a CO ₂ concentration display panel, an O ₂ concentration display panel, a temperature Display board,
It is equipped with a humidity display panel. This front plate 11 can be opened forward as shown in phantom in FIG. A cultivation floor 7 made of rock wool is provided on the entire inner surface of the side plates 13 of the left and right outer boxes 9l and 9r. Rockwool has a water-retaining property, and is suitable for the growth of plant roots while holding a culture solution for a long time. The left and right outer boxes 9l, 9r are joined to each other by the hinges 10 provided with the pivots 10a on the rear face plates 15, and
It is configured to open left and right around 0a. Further, branch pipes for the cultivation unit 1 of the air supply pipe 3, the liquid supply pipe 5 and the exhaust pipe 4 are connected to the top plate 16 and the bottom plate 17 of the left and right outer boxes 9l, 9r.

As shown in FIG. 1, each cultivation unit 1 is arranged so as to be overlapped in the left-right direction and is guided and supported so as to be movable in the left-right direction. Therefore, a pair of upper and lower guide rails extending horizontally along the back surface of each cultivation unit 1.
18 are arranged. The left and right outer boxes of each cultivation unit 1
The guide rails 18 are provided at the outer ends of the rear plates 15 of 9l and 9r, respectively.
A guide roller 19 that rolls up is attached. Further, a plurality of casters 20 are attached to the bottom plates 17 of the left and right outer boxes 9l and 9r.

Since each cultivation unit 1 is arranged on the floor so as to be in contact with each other in the closed state, the occupied floor area can be reduced and a large number of plants can be cultivated. When a certain cultivation unit 1 is opened and seedling work or harvesting work is performed, another cultivation unit 1 that must be moved to enable the cultivation unit 1 to be opened is guided along the guide rail 18. And move it, and then
As shown in the figure, the left and right outer boxes 9l and 9r may be opened. The fluorescent lamp supporting frame 9c has a structure capable of roadway, for example, when the plant A in the left outer box 9l is harvested, the fluorescent lamp supporting frame 9c is retracted to the position shown by the phantom line in FIG. This is to facilitate the harvesting work. Of course,
When the cultivation unit 1 is in the closed state, the fluorescent lamp support frame 9c is preferably located in the center of the cultivation unit 1,
It is preferable to provide a position defining means (not shown) for this purpose.

The control box 2 contains a culture solution supply device and an environmental gas adjusting device. This control box 2 is also formed in a rectangular parallelepiped having substantially the same size as the cultivation unit 1, and is arranged so as to be adjacent to the cultivation unit 1 located at the end. The culture solution supply device is connected to the culture solution distribution means 8 of each cultivation unit 1 through the solution supply pipe 5.
Then, the culture solution whose supply timing and supply amount are controlled by the microcomputer control in the culture solution supply device is distributed to the cultivation bed 7. In the example shown in FIG. 2, the culture solution delivery means 8 is of a spray type, but a drip type or the like can be adopted. As a result, an appropriate amount of water and nutrients are given to the plant at an appropriate time.

The environmental gas adjusting device has at least one of a temperature adjusting function, a humidity adjusting function, a CO ₂ temperature adjusting function, an O ₂ concentration adjusting function, and a wind speed adjusting function. Has all the features. And
The environmental gas regulator supplies the cultivation unit 1 with the gas of which the temperature, humidity, CO ₂ concentration, O ₂ concentration and wind speed are regulated in an appropriate amount and time through the air supply pipe 3. The gas in each cultivation unit 1 is returned to the environmental gas adjusting device through the exhaust pipe 4, where a part of the gas is discharged to the outside and the rest is adjusted and reused. Adjustment of temperature etc. is based on the signals transmitted from the temperature sensor, humidity sensor, CO ₂ concentration sensor, and O ₂ concentration sensor arranged in each cultivation unit 1, and by comparison with this, the control by microcomputer is used. Is done.

In the illustrated example, all of the air supply pipe 3, the exhaust pipe 4, and the liquid supply pipe 5 are composed of a main pipe part and a branch pipe part branched from the main pipe part and connected to each cultivation unit 1, and the cultivation unit 1 is added. At this time, the branch pipe section may be connected to the main pipe section as needed. The branch pipe portion is composed of a flexible tube having a sufficient length so that it can follow the movement and opening / closing movement of the cultivation unit 1. This example
It is suitable when the internal environment of each cultivation unit 1 is common. If multicultural plant cultivation is performed, it is necessary to individually adjust the conditions of the culture solution and the atmospheric gas of each cultivation unit 1, so that the piping between each cultivation unit 1 and the control box 2 should be individual piping. good. The control box 2 also has a function of adjusting the illumination time and illuminance of the fluorescent lamp 6.

Each cultivation unit 1 has a structure in which a plurality of fluorescent lamps 6 are arranged side by side on a vertical plane in the center of the cabinet 1, and a cultivation floor 7 provided with water retention is arranged on each of the vertical planes located on both sides thereof. Therefore, the light of the fluorescent lamp 6 can be efficiently used. Then, the plant A planted on the cultivation floor 7 is affected by the antigravity tendency and the light tendency and grows in a balanced direction. By the way, when the amount of light of the fluorescent lamp 6 is set to a certain value or more, the light tendency becomes dominant and the anti-gravity tendency can be almost ignored, and the plant A can be grown. For example, in the cultivation of lettuce, the photon flux density in the wavelength range of 40 to 70 nm (the wavelength range absorbed by the chlorofilm) under the condition that the distance between the fluorescent lamp 6 and the cultivation floor 7 is 23 cm and the fluorescent lamp 6 is constantly turned on. (Photosynthetic Photon
Flax Density: PPFD) light of 200 μE / m ² / S, preferably PP
By letting the FD emit 300 μE / m ² / S of light, the lettuce was able to grow by making the light tendency dominant and making the antigravity tendency almost negligible. In this way, by setting the light quantity of the fluorescent lamp 6 to a certain value or more, it is possible to grow the plant A in the direction perpendicular to the cultivation floor 7, that is, in the horizontal direction.

As the fluorescent lamp 6, a three-wavelength band fluorescent lamp (FL-EX),
There are daylight fluorescent lamps (FL-D), plant fluorescent lamps (FL-PG), etc. Whichever may be used, but in relation to PPFD, FL
-EX is efficient. Although the fluorescent lamp 6 is used as the artificial light source on the above side, an external high pressure sodium lamp, a metal halide lamp, or the like can be used.

The cultivation unit 1 can be used alone as a plant cultivation device. At that time, as in the above-mentioned example, the culture solution may be supplied by connecting it to a control box 2 or the like arranged outside via a pipe, but it is also possible to incorporate these into the cabinet 1. is there. Alternatively, it is possible to provide an open type simple plant cultivation device in which only the drip-type culture solution supply device is incorporated and other adjustment devices are omitted.

The cultivation floor 7 can be constructed as shown in FIG. That is, the outer periphery of the cultivation floor 7 is formed by a box body formed from a thin-walled sheet metal into a cylindrical shape with a bottom, and a side wall outer peripheral surface 7s of the cabinet 9 in which the outer peripheral box body of the cultivation floor 7 is slidably fitted. On the inner surfaces of the outer boxes 9l, 9r, the projections 7p that are inserted and fitted into any of the holes 9h, 9i, 9j ... is there. This protrusion 7p is
A size that can be sequentially inserted into holes 9h to holes 9i, 9j ... Adjacent to each hole according to the movement of the cultivation floor 7 when changing the distance between the cultivation floor 7 and the fluorescent lamp 6. Is set to. The hole 9h is farthest from the fluorescent lamp 6, and the holes displaced toward the 9i, 9j ... side are opened closer to the fluorescent lamp 6. That is, the distance between the cultivation floor 7 and the fluorescent lamp 6 can be changed according to the growth of the plant by selecting any of the holes 9h, 9i, 9j for the projection 7p.

This interval should be changed within the range that the irradiation amount of the plant facing the fluorescent lamp 6 is maintained within the range in which the superiority of the light tendency to the anti-gravity tendency is not lost, so that the holes 9h, 9i, 9j. On the outside, the numerical values of the irradiation light amount in each hole are labeled 15a, 15b, 15c.
It is displayed as …….

Incidentally, the means for changing the interval is not only by appropriately selecting and fitting the projection 7p and the holes 9h, 9i, 9j in this embodiment, but also by using the projection as a screw body instead of the holes 9h, 9i, 9j. The cultivation floor 7 can be screwed and fixed to the cabinet 9 from the head portion of the screw protruding outside through the elongated hole as a thing. Further, the projection may be a pinion, the hole or the long hole portion may be formed of a rack, the pinion may be engaged with the pinion, the pinion may be driven by an electric motor, and the above-mentioned interval may be changed.

5 and 6 show a second embodiment of the present invention.
This second embodiment is also mainly composed of a plurality of cultivation units 51 having the same function as in the first embodiment, a control box 52, and an air supply pipe, an exhaust pipe (not shown) and a liquid supply pipe 55 that connect the two. ing.

Each cultivation unit 51 is a cabinet 59, a plurality of fluorescent lamps 56 as artificial light sources arranged on a horizontal plane in the cabinet 59, and water-retaining properties arranged above and below the fluorescent lamps 56 on respective horizontal planes. It comprises a cultivation floor 57 equipped with.

The cabinet 59 is formed in a rectangular parallelepiped shape having a minimum height with respect to the width and depth, and has an outer case 59a and an upper drawer 59.
It consists of u, middle drawer 59c and lower drawer 59l. The upper drawer 59u is formed in a flat rectangular parallelepiped shape having a bottom without a top, and the cultivation floor 57 is supported on the ceiling surface thereof. Medium drawer 59
A rectangular frame c supports the plurality of fluorescent lamps 56.
The lower drawer 59l is formed in a flat rectangular parallelepiped shape with a bottom and does not support the cultivation floor 57. These drawers 59u, 59c, 59l are supported by the exterior case 59a so as to be movable back and forth and detachably. For this reason each drawer
Guide means 64 is provided between both side surfaces of 59u, 59c, and 59l and a portion of the inner surface of the outer case 59a that corresponds to each drawer. As shown in FIG. 6, it is preferable to employ, as the guide means 64, one having an intermediate guide 64a that advances by a distance of 1/2 as the drawers 59u, 59c, 59l move forward.

The respective cultivation units 51 are arranged so as to be vertically overlapped with each other as shown in FIGS. 5 and 6. In addition, a control box is installed under the multiple cultivation units 51 that are loaded.
52 are arranged. As in the case of the first embodiment, the control box 52 incorporates a culture solution supply device and an environmental gas adjusting device. And the culture solution supply device and each cultivation unit 51 are connected via a liquid supply pipe 55,
An appropriate amount of the culture solution is sent to the culture solution distribution means (not shown) in each cultivation unit 51, and is distributed to the cultivation bed 57 through this. The relationship between the environmental gas adjusting means and each cultivation unit 51 is also the same as in the case of the first embodiment, so the description thereof will be omitted.

In the illustrated example, each cultivation unit 51 is completely independent, but the outer case 59a of each cultivation unit 51 can be shared. That is, a common outer case is formed so as to accommodate a large number of drawers, and the upper, middle, lower, upper,
It is also possible to house each drawer 59u, 59c, 59l in the order of middle, bottom ...

Each cultivating unit 51 has a structure in which a plurality of fluorescent lamps 56 are arranged side by side on a horizontal plane in the center of a cabinet 59, and a cultivating floor 57 having water retention is disposed on each of the horizontal planes located on both sides thereof. Therefore, the light of the fluorescent lamp 56 can be efficiently used. By increasing the PPFD of the fluorescent lamp 56, the normal growth of the plants A on the upper and lower cultivation beds 57 can be enabled. The cultivation floor 57 located on the lower side can be configured as follows. That is, it is possible to obtain the solution cultivation bed 57 in which the root hair portion of the plant is dipped in the solution supplied to the bottom portion in the lower drawer 59l. Also, instead of this, water is introduced into the bottom of the lower drawer 59l, and the float in which the plant is preserved is floated on the water surface (including the flowing water surface) or the water is not formed on the plant. It is also possible to use a hydroponic cultivation bed in which water is sprayed and supplied at an appropriate time interval, or other plants are planted on a cultivation bed having water retention capacity, and water or a solution is supplied dropwise to this. As appropriate, such as rock wool cultivation, or sand cultivation in which plants are planted in a large number of sand aggregates having sufficient water retention capacity, or gravel cultivation in which sand in sand cultivation is replaced with gravel. Known ones can be selectively used.

The cultivating unit 51 can be used alone as a plant cultivating device, and in that case, what has been described in the first embodiment is directly applied.

(Effect of the Invention) According to the present invention, it is possible to provide a plant cultivation device capable of increasing the lighting efficiency of an artificial light source and performing high-density plant cultivation on a limited floor area.

Further, according to the present invention, it is possible to provide a plant cultivation device which can be installed in a home, a shopping center or the like and can grow a plant easily and in a short time.

Further, according to the present invention, it is possible to provide a plant cultivating apparatus that can smoothly replace a cultivating floor, cultivate and harvest a plant, and easily grow different plants.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention.
The figure is a perspective view of the whole, FIG. 2 is a cross-sectional side view of the cultivation unit, and FIG. 3 is a vertical plan view of the cultivation unit. FIG. 4 is a vertical plan view showing an enlarged part of a cultivation unit showing a modification of the first embodiment. FIGS. 5 and 6 show a second embodiment of the present invention, FIG. 5 is a side view with a part cut away, and FIG. 6 is a perspective view of a main part. FIG. 7 is a schematic view showing a conventional example. 1, 51 ...... Cultivation unit 2, 52 ...... Control box 3, 4, 5, 55 ...... Tube 6, 56 …… Artificial light source (fluorescent lamp) 7, 57 …… Cultivation floor 8 …… Culture solution distribution means 9 , 59 …… Cabinet 9l, 9r, 9c, 59a, 59u, 59c, 59l …… Cabinet configuration element 10a …… Axis

Front page continuation (72) Inventor Kimitoshi Doroguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Masaaki Matsushima 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture (56) References JP-A-59-147303 (JP, A) JP-A-61-271926 (JP, A)

Claims (2)

[Claims] 1. A pair of cultivating floors in which the cultivating floor surfaces arranged so that the plants grow in a substantially perpendicular direction are arranged in a substantially vertical direction, and the cultivating floor surfaces are arranged in parallel so as to face each other, and With an artificial light source arranged between the cultivation floor surface, the artificial light source is a predetermined value sufficient to grow the plant in the direction substantially perpendicular to the cultivation floor surface in which the light intensity overcomes the anti-gravity tendency. A plant cultivating apparatus, which is configured to irradiate the plant with light having the above photosynthetic effective photon flux density. 2. A pair of cultivating floors, in which the cultivating floors are arranged so that the plants grow in a substantially right-angled direction, are arranged in parallel so as to face each other. An artificial light source for irradiating the plant with light having a photosynthetic effective photon flux density of a predetermined value or more sufficient to grow the plant in a direction substantially perpendicular to the cultivation floor surface overcoming the anti-gravity tendency. And the respective cultivation beds are specially housed in respective three cabinet constituent elements constituting the cabinet, and the cabinet constituent elements are configured to be separable from each other.