JP2018007652A - Hydroponic cultivation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide hydroponic cultivation apparatus that can almost unify the internal temperature by circulating air within a cultivation area and inhibiting formation of a temperature difference, and can realize an efficient hydroponic cultivation.SOLUTION: A hydroponic cultivation apparatus 1 has a cultivation area 3 consisting of a ceiling plate 3A having a reflection surface 19 inside, and 2 side plates 3C facing each other having reflection surfaces 19 inside; a plurality of long shaped hydroponic cultivation baths 7, hydroponic cultivation plates 5 that have plant holding holes 25 and ventilation ways 27; an exhaust port; and a lighting unit 9, a plurality of hydroponic cultivation baths 7 being arranged in parallel at predetermined intervals to each other, in the cultivation area 3, and the hydroponic cultivation plate 5 being arranged on the hydroponic cultivation bath 7 so that the ventilation way 27 is positioned between the hydroponic cultivation baths 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hydroponic cultivation apparatus capable of efficiently cultivating a plant by performing temperature management while supplying light and nutrients inside a cultivation area.

  In recent years, there is no need to use soil, high-density production is possible in a small indoor space, temperature and humidity can be adjusted without being affected by the weather, and contamination by germs and insects is eliminated. Hydroponic cultivation equipment has been attracting attention because of its many advantages such as being easy to do. The hydroponic cultivation apparatus generally employs hydroponic cultivation apparatuses in which hydroponic containers for growing plants are arranged in multiple stages at predetermined intervals in the vertical direction, and lighting devices are provided on the upper side of each hydroponic container. (For example, refer to Patent Document 1).

  The multi-stage hydroponic cultivation device as described above is constructed by surrounding the device itself with a plate, etc., with a light reflecting film, sheet and multilayer board for effective use of light, so that the internal air stays It was easy to do, and there was a difference in the atmospheric temperature at each stage, which had an effect on plant growth. On the other hand, what was equipped with the air-conditioning system which provides a uniform airflow to the cultivation shelf which has a some cultivation bed on the stage is proposed (for example, refer patent document 2). This is an air-conditioning adjustment system that allows air to flow into the side of a long cultivation shelf, and supplies a cold air that sends cold air toward the side of the cultivation shelf, and supplies airflow to the cold air of the cold shelf And an attracting fan.

JP 2014-033622 A JP2015-173615A

  However, in the hydroponic cultivation apparatus as described above, a plurality of electromechanical devices such as a cold air blower and an induction fan are required, and further, it is necessary to provide a duct communicating with each stage. There was a problem that the cost and the hydroponics apparatus could not be easily introduced.

  Here, focusing on the configuration of each stage of the hydroponic cultivation apparatus and the movement of air inside the hydroponic cultivation apparatus, each of the inside of the hydroponic cultivation apparatus because the cultivation shelf prevents the movement of air. It was clear that air stagnated in the stage, and there was still room for improvement.

  Then, in view of the above problems, the present invention can take air such as the location of the hydroponics apparatus into the cultivation area, for example, and can suppress the formation of a temperature difference to make the internal temperature substantially uniform, It aims at providing the hydroponic cultivation apparatus which can implement | achieve the hydroponic cultivation which a difference does not appear in the quality of cultivated goods.

In order to solve the above problems, the present invention provides:
Cultivation area 3 composed of a ceiling plate 3A having a reflective surface 19 on the inside and two sets of opposing side plates 3B having a reflective surface 19 on the inside;
7 long hydroponics tanks,
A hydroponic plate 5 having a plant holding hole 25 and an air passage 27;
An exhaust port;
A lighting device 9;
A hydroponic cultivation apparatus 1 comprising:
In the cultivation area 3,
A plurality of the hydroponics tanks 7 are arranged in parallel with a predetermined interval between each other,
The hydroponics plate 5 is disposed on the hydroponics tank 7 such that the air passage 27 is located between the hydroponic tanks 7,
A hydroponic cultivation apparatus 1 is provided.

  In the hydroponic cultivation apparatus of the present invention having such a configuration, a hydroponic cultivation plate 5 for cultivating a plant 21 is arranged on a plurality of parallel hydroponic cultivation tanks 7 in the cultivation area 3. The plant 21 is cultivated and held in the plant holding hole 25. Moreover, while providing the exhaust port which discharges | emits the air in the cultivation area 3 outside, several hydroponic cultivation tanks 7 are mutually arrange | positioned in parallel at predetermined intervals, and the plate 5 for hydroponic cultivation Are arranged on the hydroponics tank 7 so that the air passage 27 is located between the hydroponics tanks 7.

  Moreover, in the hydroponic cultivation apparatus 1 of the present invention described above, the reflective surface capable of reflecting and diffusing light on the surface on which the ceiling plate 3A and the side plate 3B constituting the cultivation area 3 are inside the cultivation area 3. 19 is provided, and the light from the lighting device 9 can be reflected and diffused to increase the efficiency of light supply to the plant 21. A hydroponic cultivation tank 7 is disposed below the hydroponic cultivation plate 5, and a nutrient solution 23 that promotes the growth of the plant 21 can be placed inside the hydroponic cultivation tank 7. The root of the plant 21 held on the hydroponic cultivation plate 5 is immersed in the nutrient solution 23 according to the arrangement relationship between the hydroponic cultivation plate 5 and the hydroponic cultivation tank 7 and is used for hydroponics. Can do.

  Moreover, in the hydroponic cultivation apparatus 1 of the present invention, it is preferable that the hydroponic cultivation tank 7 is arranged in multiple stages in the cultivation area 3. According to such a structure, it becomes possible to implement hydroponics in multiple stages in the cultivation area 3, and many plants 21 can be cultivated simultaneously in a small area to improve productivity. ,

  Moreover, in the hydroponic cultivation apparatus 1 of the present invention, the exhaust port may be disposed in any part, and above all, disposed above the vicinity of the uppermost stage of the hydroponic cultivation tank. It is desirable that According to such a configuration, by operating the exhaust fan 11, air can be efficiently moved from below to above through the air passage 27 to prevent air from staying in the cultivation area 3. Efficient hydroponics is possible by making the temperature inside the area 3 substantially uniform.

  Further, the present invention includes a plurality of the hydroponic cultivation apparatuses 1 according to the present invention, and the hydroponic cultivation tanks 7 in the adjacent hydroponic cultivation apparatuses 1 are connected to each other. A hydroponics device is also provided. Many plants 21 can be taken in and out only at two places on the upstream side and downstream side of the plant 21 and the work efficiency is improved. Moreover, the plant 21 can be taken in and out from the side, and plants having different growth stages and different types of plants 21 can be cultivated in the same hydroponic solution 23 in each hydroponic cultivation tank 7. Furthermore, since the leaf surface boundary layer of the plant 21 can be broken by the airflow from the air passage 27, the growth of the plant 21 can be promoted.

  ADVANTAGE OF THE INVENTION According to this invention, an internal temperature can be made substantially uniform and the hydroponic cultivation apparatus which can implement | achieve the hydroponic cultivation which does not produce a difference in the quality of cultivation can be provided.

It is a figure which shows the outline | summary of the hydroponic cultivation apparatus 1 which concerns on this embodiment, Comprising: Fig.1 (a) is sectional drawing of the transversal direction X in the hydroponic cultivation apparatus 1 of this embodiment, FIG.1 (b) ) Is a cross-sectional view in the longitudinal direction Y of the hydroponic cultivation apparatus 1 of the present embodiment. It is a figure explaining the detail of the plate 5 for hydroponics shown to Fig.1 (a) and (b), Comprising: Fig.2 (a) is the top view which showed the surface of the plate 5 for hydroponics, 2 (b) is a side view taken along the line of sight A shown in FIG. 2 (a), and FIG. 2 (c) is a plan view showing the back surface of the hydroponics plate 5. The hydroponics plate 5 immerses the roots of the plants 21 in the nutrient solution 23 in the hydroponics tank 7 to be described later while holding the plants 21 and serves as a foundation for the cultivation of the plants 21. It is a figure explaining the edge part of the longitudinal direction in the plate 5 for hydroponics shown to Fig.1 (a) and (b), Comprising: Fig.3 (a) is the side of the arrow line B shown to Fig.2 (a). FIG. 3B is a side view of the end portion in a state where the hydroponics plates 5 are butted together in the longitudinal direction Y. It is a side view explaining the structure of the butt | matching of the hydroponic cultivation plate 5 shown to FIG. 3 (a) and (b), and the light-shielding member 43. FIG. It is a side view which shows the modification 1 in the structure of the butt | matching of the hydroponic cultivation plate 5 shown in FIG. It is a side view which shows the modification 2 in the structure of the butt | matching of the hydroponic cultivation plate 5 shown in FIG. It is a side view which shows the modification 3 in the structure of the butt | matching of the hydroponic cultivation plate 5 shown in FIG. It is the perspective view which showed the hydroponic cultivation tank 7 shown to Fig.1 (a) and (b). It is a perspective view which shows the arrangement | positioning relationship between the plate 5 for hydroponics shown to Fig.1 (a) and (b), and the hydroponic cultivation tank 7. FIG. It is sectional drawing of the longitudinal direction Y in the connected 1st hydroponic cultivation apparatus 201A and 2nd hydroponic cultivation apparatus 201B. It is a schematic diagram which shows the example of cultivation work using the slide of the plate 5 for hydroponics. It is the schematic diagram which showed the flow of the air in the hydroponics apparatus 1 of this embodiment. It is sectional drawing of the transversal direction X in the hydroponic cultivation apparatus 1 of this embodiment which has arrange | positioned the exhaust fan 11 shown to Fig.1 (a) and (b) to the side plate 3B. It is a perspective view which shows the arrangement | positioning relationship between the plate 5 for hydroponics made into the separate shape, and the hydroponic cultivation tank 7. FIG. It is sectional drawing of the transversal direction X which shows the outline | summary of the mist sprayer addition type | mold 301. FIG. It is sectional drawing of the transversal direction X which shows the outline | summary of the temperature control apparatus additional type | mold 401. FIG. It is sectional drawing of the longitudinal direction Y which shows the outline | summary of the twisted airway type | mold 501. FIG.

  Hereinafter, typical embodiment of the hydroponic cultivation apparatus 1 which concerns on this invention is described in detail, referring FIGS. However, the present invention is not limited to what is shown in the drawings, and each drawing is for conceptual description of the present invention. Therefore, the dimensions, ratios, or numbers are exaggerated as necessary for easy understanding. Or it may be expressed in a simplified manner. Further, in the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description may be omitted.

1. Structure <Hydroculture device 1>
The outline | summary of the hydroponic cultivation apparatus 1 in this embodiment is demonstrated using FIG. Fig.1 (a) and (b) are figures which show the outline | summary of the hydroponic cultivation apparatus 1 which concerns on this embodiment, Comprising: Fig.1 (a) is a transversal direction in the hydroponic cultivation apparatus 1 of this embodiment. It is sectional drawing of X, FIG.1 (b) is sectional drawing of the longitudinal direction Y in the hydroponic cultivation apparatus 1 of this embodiment.

  The hydroponic cultivation apparatus 1 of the present embodiment is hardly affected by various effects such as weather and temperature, and pests, and the cultivation area 3 of the hydroponic cultivation apparatus 1 of the present embodiment is a rectangular parallelepiped and has an upper surface and four side surfaces. Is covered with a reflecting surface 19 for increasing the light efficiency, and the hydroponics plate 5 reflects light efficiently, so that the photosynthesis of the plant 21 is highly efficient and enables stable cultivation of the plant 21. Is.

  Moreover, since the external shape of the hydroponic cultivation apparatus 1 is formed in a rectangular parallelepiped shape and the four rectangular parallelepiped-shaped upper sides of the hydroponic cultivation plate are covered with the reflecting member, almost no air inflow from the side. However, it is difficult for an air flow for heat exchange to occur, heat retention occurs, and a temperature difference occurs between the respective stages. Usually, the hydroponic cultivation apparatus 1 and the hydroponic cultivation plate 5 of the present embodiment are used. Is provided with an air passage 27 composed of a through-hole and has an exhaust port above the rectangular parallelepiped, so that air can flow in the cultivation area, and heat transfer by this is easy. Therefore, the air flow that penetrates each stage breaks down the leaf boundary layer of the plant 21. Specifically, it is an apparatus for cultivating a plant 21 mainly indoors, and hydroponics from below the hydroponic cultivation apparatus 1 while supplying nutrients necessary for cultivation of the plant 21 and light necessary for photosynthesis. The air (for example, air-conditioned air) at the place where the cultivation apparatus 1 is installed can be taken into the cultivation area 3 (in some cases, circulated), and the internal temperature can be made substantially uniform as described above.

  The hydroponic cultivation apparatus 1 of the present embodiment includes nutrients in the cultivation area 3 that is the main body of the hydroponic cultivation apparatus 1, the hydroponic cultivation plate 5 for holding the plant 21, and the plant 21. A plurality of long (in other words, bowl-shaped) hydroponic cultivation tank 7 for supplying nutrient solution 23, lighting device 9 for encouraging photosynthesis of plant 21, and air for cultivating air in cultivation area 3 The exhaust fan 11, the shelf 13 comprised in the cultivation area 3, and the roller type conveyor 15 which assists the support to the plate 5 for hydroponics and the slide to the longitudinal direction Y are comprised.

  The cultivation area 3 is a main body part of a box that forms a box-like space as a whole, and constitutes the main body part of the hydroponic cultivation apparatus 1 of the present embodiment. The hydroponic cultivation apparatus 1 is formed by placing the components. The cultivation area 3 includes four ceiling plates 3A that serve as the ceiling of the cultivation area 3, side plates 3B that serve as walls in the longitudinal direction Y, and four that are disposed at approximately four corners of the cultivation area 3 to support the weight of the hydroponic cultivation apparatus 1. And the support column 3C. The four columns 3C are arranged at predetermined intervals, and the ceiling plate 3A and the side plates 3B are attached to the column 3C from the outside. In addition, it is preferable that there is no gap through which light leaks at the contact portion between the ceiling plate 3A and the side plate 3B.

  Moreover, the inner surface in ceiling board 3A and the side board 3B is equipped with the reflective surface 19, and light is lighted in the said cultivation area 3 by comprising the cultivation area 3 facing each reflection surface 19 inside. It can be reflected and diffused sufficiently. Although the side plate 3B is hung on the outside of the column support 3C, the side plate 3B can be hung inside the column support 3C.

In addition, the length in the height direction of the side plate 3B is shorter than the length of the column 3C. For this reason, when the cultivation area 3 is grounded to the ground plane 101, the ground plane 101 and the side plate 3 </ b> B are not in contact with each other, and only the lower end of the support column 3 </ b> C is in contact with the ground plane 101. . Accordingly, the cultivation area 3 has a slit-like opening 17 at the lower side, and the inside and outside of the cultivation area 3 communicate with each other through the opening 17, so that air conditioning (temperature, humidity) can be easily performed from below. , Carbon dioxide concentration).
The side plate 3B may be integrated from the upper end to the lower end of the support column 3C, or may be divided according to the height of each step. Since the side plate 3C divided at the height of each step is lighter than an integrated one, it is preferable in that it is easy to handle.

  Inside the cultivation area 3, a three-stage shelf 13 is provided at a predetermined height. The shelf 13 includes two longitudinal beams 13A arranged in the longitudinal direction Y and the two longitudinal lengths. This is a ladder-like frame composed of a plurality of short direction beams 13B connecting the direction beams 13A at a predetermined interval. The shelves 13 are preferable because the number of cultivated strains can be increased by placing a plurality of shelves 13 so as to be multi-staged at a predetermined interval inside the cultivation area 3, but may be a single stage.

  Next, an exhaust port (not shown) is for exhausting the air in the cultivation area 3 to the outside, and the uppermost hydroponics in the ceiling plate 3A or the side plate 3B in the cultivation area 3. It is formed above the vicinity of the tank 7. For example, as shown in FIG. 13, the exhaust port and the exhaust fan 11 may be disposed on the side plate 3B as long as it is above the vicinity of the uppermost hydroponics tank 7 (in FIG. It is located above the uppermost hydroponics tank 7). In the present embodiment, the exhaust fan 11 is directly attached to the exhaust port. However, the exhaust fan 11 may be disposed far away via a duct or the like.

  Moreover, in the case of this embodiment, the exhaust fan 11 is provided in the said exhaust port, and the air in the cultivation area 3 is exhausted outside via the said exhaust port which connects the cultivation area 3 and the exterior. Thereby, the airflow which flows upwards from the downward direction in the said cultivation area 3 can be generated, As a result, it becomes possible to make the environment (temperature, humidity, carbon dioxide gas concentration) in the cultivation area 3 uniform.

Although various exhaust fans can be used as the exhaust fan 11, it is preferable to use, for example, a case fan used for an electromechanical device or the like, and depending on the capacity of the cultivation area 3, for example, approximately 10 m ³ / It is desirable to have an exhaust capacity of min. Moreover, in order to improve the circulation efficiency of the air in the cultivation area 3, the exhaust fan 11 may be arrange | positioned in various positions irrespective of an exhaust port.

  What is necessary is just to set in the range of 50-95% about the ratio of the area of the plate 5 for hydroponics with respect to the area of the plane of the cultivation area 3 seen from the plane direction, and a high value in order to increase the cultivation amount per unit area The tendency to be set is strong. In the case of a high value, the area of the hydroponics plate 5 is increased, so that the gap with the side plate is reduced, and the heat released from the lighting device is retained in each stage. Even in such a case, if the aeration path 27 is formed in the hydroponic cultivation plate 5 as in the present invention, heat retention can be reduced, and the exhaust fan 11 is exhausted from the upper exhaust port. Furthermore, heat retention and temperature unevenness between the respective stages (shelves) can be prevented.

Moreover, if the area of the plate 5 for hydroponics becomes large, the number of cultivation strains can be increased in connection with it, and a clearance gap between the side plates 3B in the outer peripheral part of the plate 5 for hydroponics becomes small. Thereby, since the amount of air passing through the gap is reduced and the amount of air passing through the air passage 27 in the hydroponics plate 5 is increased, the temperature difference inside each stage is reduced and the cultivation can be made uniform. Become.
On the other hand, when the ratio of the area of the hydroponics plate 5 to the area of the plane of the cultivation area 3 is relatively small, the amount of air passing through the peripheral portion of the hydroponics plate 5 increases, and the heat between each stage However, there is a problem that heat stays easily in the central portion of the hydroponics plate 5 because the amount of air passing therethrough is reduced.

  In order to make the temperature, humidity, and carbon dioxide gas concentration in the cultivation area 3 uniform, it is preferable that the air flow rate is large. However, in order to break down the leaf boundary layer of the plant and promote photosynthesis of the plant, a wind speed of 1 to 0.1 m / min is preferable, and if it is faster than 1 m / min, stress is applied to the plant, and 0.1 m / min. There is a problem that the leaf boundary layer cannot be broken when it is slower than min. Thus, in order for the wind speed to be within a predetermined range, it is necessary to adjust the opening in relation to the displacement, and in the hydroponic cultivation apparatus 1 of this embodiment, the hydroponic cultivation plate 5 (aeration) The ratio of the opening (ventilation passage 27 and other gaps) to the area of the closed portion excluding the passage 27 is preferably in the range of 3 to 50%. In order to achieve a more preferable wind speed of 0.3 to 0.5 m / min in photosynthesis, it is desirable to set the aperture ratio to 16 to 9%.

  A plurality of roller conveyors 15 are attached to the long rail 41 at a predetermined interval, and the hydroponics plate is brought into contact with the roller conveyor 15 from the lower surface side of the hydroponics plate 5. 5 can be supported and slid. The rail 41 is disposed substantially parallel to the longitudinal direction Y, and is fixed to the upper surfaces of the plurality of transverse beams 13 </ b> B constituting the shelf 13. In addition, the rail 41 is mounted by the same number as the 2nd groove | channel 33 which the plate 5 for hydroponics mentioned later comprises.

  The illuminating device 9 is an illuminating device for emitting light in the cultivation area 3 and supplying light necessary for photosynthesis of plants, and as a light source, for example, a long HF fluorescent tube, a fluorescent tube LED, or the like Can be used to emit light. In the present embodiment, the lighting device 9 is fixed substantially parallel to the lateral direction X on the lower surface of the hydroponic cultivation tank 7 and the rail 41, but depending on the size and shape of the cultivation area 3, the longitudinal direction Y and You may fix to substantially parallel, and in this case, you may fix to the lower surface of the transversal beam 13B which comprises the shelf 13. FIG.

<Plate 5 for hydroponics>
Next, the detail of the hydroponics plate 5 which is one of the characteristics of the hydroponics unit 1 of this embodiment is demonstrated. 2 (a), 2 (b), and 2 (c) are diagrams for explaining the details of the hydroponics plate 5, and FIG. 2 (a) is a plan view showing the surface of the hydroponics plate 5. 2 (b) is a side view taken along the arrow line A shown in FIG. 2 (a), and FIG. 2 (c) is a plan view showing the back surface of the plate 5 for hydroponics. Although unevenness on the back surface is not always necessary, it is effective for positioning of the plant (cultivate) and prevention of displacement of the hydroponics plate 5. The hydroponics plate 5 immerses the root of the plant 21 in a nutrient solution 23 in the hydroponics tank 7 described later while holding the plant 21, and becomes a foundation for cultivation of the plant 21.

  The hydroponics plate 5 shown in FIG. 2 (a) has a substantially rectangular shape, but may have a planar shape such as a polygon such as a triangle or pentagon depending on the type of cultivation and the planting density. A predetermined number of plant holding holes 25 constituted by through holes for holding 21 and air passages 27 serving as air moving paths are provided at predetermined intervals. The two kinds of holes penetrate from the front surface to the back surface of the hydroponics plate 5. Note that the air passage 27 is not only recognized as a hole in one hydroponics plate 5, but, for example, a semicircular cutout is formed in the hydroponics plate 5 and another hydroponic plate It also includes the case of functioning as a hole when matching with 5. That is, it includes what functions as the air passage 27 when assembled as a device.

  The aeration path 27 in the hydroponics plate 5 is in the vicinity of the plant holding hole 25, and is provided at an intermediate position of a constant pitch in both the X direction and the Y direction in this embodiment. In this way, when the air passes through the air passage 27, the air hits the lower surface of the plant planted in the plant holding hole 25, destroys the leaf boundary layer, and supplies fresh air to the leaf. be able to. Thereby, there exists an effect which the growth of a plant is accelerated | stimulated. The distance between the air passage 27 and the plant holding hole 25 depends on the plant 21 to be cultivated, but is preferably as small as possible, preferably shorter than the distance between the plant holding holes 25. The number and position of the air passages 27 can be adjusted as appropriate so that the distance can be increased. This is because if the distance between the plant holding holes 25 is shorter than the distance between the plant holding holes 25, the ventilation from the ventilation path 27 easily hits the leaf surface.

  The plant holding hole 25 is for growing while inserting and holding the plant 21 surrounded by a substantially sponge-like medium 29 made of, for example, urethane resin, and the air passage 27 is a plate for hydroponics. 5 is a movement path in the air between the front surface side and the back surface side of 5. Note that the number of plant holding holes 25 is determined by the number of simultaneously cultivated plants 21 in one hydroponics plate 5, and the number of vents 27 is between the volume of the cultivation area 3 and each shelf 13. It is determined by the volume of.

  As shown in FIGS. 2 (b) and 2 (c), the hydroponics plate 5 has a predetermined number of first grooves 31 and second grooves 33 on the lower surface side, and has a concavo-convex cross section in the lateral direction X. Form a shape. In the present embodiment, the width and depth of the first groove 31 are formed larger than the width and depth of the second groove 33, respectively. Since the 1st groove | channel 31 is a groove | channel covered on the upper part of the hydroponic cultivation tank 7, and the 2nd groove | channel 33 is a groove | channel used as the guide of the roller type conveyor 15, both the said 2 types of groove | channels are longitudinal direction Y. Is growing.

  Moreover, since the holding hole 25 for plants which the plate 5 for hydroponics has has to immerse the root of the plant 21 in the nutrient solution 23 in the hydroponics tank 7, in this embodiment, the said hydroponics tank 7 is provided along the first groove 31 that covers the upper portion of 7, and the air passage 27 is provided along the second groove 33.

  In addition, in the hydroponic cultivation unit 1 of this embodiment, when cultivating a lot of plants 21, a plurality of hydroponic cultivation plates 5 are connected to the hydroponic cultivation tank 7 in the cultivation area 3 with a joint or the like. For example, the roller-type conveyor 15 is moved while rotating in a state where the plates 5 for hydroponics are in contact with each other in the longitudinal direction Y. Therefore, the plant 21 can be taken in and out only at two places on the upstream side and the downstream side, for example, and workability is improved.

  Next, the edge part of the longitudinal direction Y in the hydroponics plate 5 is demonstrated using FIG. 3 (a) and (b). 3 (a) and 3 (b) are diagrams for explaining an end portion in the longitudinal direction Y of the hydroponics plate 5, and FIG. 3 (a) is taken along the line of sight B shown in FIG. 2 (a). FIG. 3B is a side view of the end portion in a state where the hydroponic culture plates 5 are butted together in the longitudinal direction Y. FIG.

  The ends in the longitudinal direction Y of the hydroponic cultivation plate 5 are different in shape at both ends, as shown in FIGS. 3 (a) and 3 (b), and an exit corner end 35, an entrance corner end 37, Is provided. The protruding corner end portion 35 and the entering corner end portion 37 are formed so as to be fitted to each other.

  When the hydroponics plates 5 are abutted with each other in the longitudinal direction Y by the projecting corner end 35 and the entrance corner end 37 having such a configuration, the directions of the hydroponics plates 5 are matched with each other. The protruding corner end portion 35 and the entering corner end portion 37 are engaged with each other. Accordingly, when a plurality of hydroponics plates 5 are butted and arranged in the longitudinal direction Y, it is possible to safely and simultaneously slide the other plurality of plates by pressing only the most hydroponic plates 5. Become.

  Moreover, by connecting the exit corner end portion 35 and the entrance corner end portion 37, light does not enter through the connected gap, preventing light from entering the hydroponic cultivation tank 7, and preventing the algae from entering the light. Occurrence can be prevented.

  In addition to the shape of the present embodiment as described above, it is also possible to use an upper bent piece 55 by bending the front and rear ends of a thin plate having a thickness of several millimeters upward in an L shape. In this case, since the adjacent hydroponics plates 5 are in contact with each other by the upper bent pieces 55, when the adjacent hydroponics plates 5 are pressed, the hydroponics plates 5 are overlapped with each other. Specific problems can be avoided.

  Here, as shown in FIG. 4, in order to prevent a gap between adjacent hydroponics plates 5 from being generated, and light entering there and generating algae, the two in contact with each other By placing a light blocking member 43 made of an inverted U-shaped long cap above the bent piece 55, light may be prevented from entering in the gap. The light blocking member 43 may have a substantially clip shape that can hold and fix the two upwardly bent pieces 55 that are in contact with each other. The upper bent piece 55 can have a height of 5 to 50 mm.

  Furthermore, the hydroponics plate 5 and the light blocking member 43 can take various forms. 5-7, the modification of the plate 5 for hydroponics and the modification of the structure of the light shielding member 43 arrange | positioned between the plates 5 for adjacent hydroponics are shown. FIG. 5 shows an example in which a light blocking member 43 having a substantially T-shaped cross section is placed. The vertical plate 45 is used for hydroponics while preventing light from entering through the gaps between the hydroponic plates 5. The light blocking member 43 is fixed by being sandwiched between the abutting portions of the plates 5, and the top plate 47 prevents the abutting portions from rising, thereby preventing the hydroponics plates 5 from overlapping.

  In FIG. 6, a light blocking member 43 configured to have a substantially clip-like gripping portion 49 arranged back to back and capable of gripping a butting portion between hydroponics plates 5 that do not have the upper bent piece 55 is placed. In the example, the butt portion is fixed by the gripping force of the grip portion 49 while preventing the intrusion of light by gripping the butt portion between the hydroponics plates 5 and shielding the gap, and the hydroponics plate 5 This is to prevent overlapping.

  FIG. 7 shows an example in which a plate-shaped light blocking member 43 having a plurality of fixing protrusions 51 is placed at a predetermined interval. The light blocking member 43 is used and the upper bent piece 55 is not included. The abutting portion between the hydroponics plates 5 having the protrusion insertion holes 53 arranged at the same dimensional intervals as the fixing protrusions 51 arranged on the light blocking member 43 is fixed. By inserting the fixing protrusions 51 of the light blocking member 43 into the protrusion insertion holes 53, the abutting portions of the hydroponics plates 5 can be fixed to prevent overlap, and light can be prevented from entering.

<Hydroculture tank 7>
Next, details of the hydroponics tank 7 will be described with reference to FIG. As shown in FIG. 8, the hydroponic cultivation tank 7 is configured by using a synthetic resin fence or the like that is suitably used for a house, and is a long water tank having a substantially U-shaped cross-sectional shape. It is. Since the hydroponics tank 7 stores or circulates the nutrient solution 23 that promotes the growth of the plant 21 inside, the end walls 39 are provided at both ends so that the nutrient solution 23 flows out to the outside. It is preventing.

  A plurality of hydroponics tanks 7 are arranged substantially parallel to the longitudinal direction Y, and are held on the upper surfaces of a plurality of transverse beams 13 </ b> B constituting the shelf 13. In the present embodiment, the number of hydroponics tanks 7 is the same as the number of first grooves 31 included in the hydroponics plate 5.

  In addition, when circulating the nutrient solution 23 in the hydroponic cultivation tank 7, for example, a predetermined gradient is provided in the hydroponic cultivation tank 5 to set the upper stream side and the lower stream side, and a pump and a water guide pipe are used. This can be achieved by providing a mechanism such as supplying the nutrient solution 23 from the water tank provided outside to the upper side of the river, draining it from the lower side, and returning it to the water tank.

  The arrangement relationship between the hydroponics plate 5 and hydroponics tank 7 of the present embodiment as described above will be described. FIG. 9 is a perspective view showing the positional relationship between the hydroponics plate 5 and the hydroponics tank 7. As shown in FIG. 9, the hydroponic cultivation plate 5 and the hydroponic cultivation tank 7 are installed in such a manner that the hydroponic cultivation plate 5 straddles the plurality of hydroponic cultivation tanks 7. The hydroponic cultivation plate 5 is preferable in that it can be used for harvesting and the like, and even if the size of the hydroponic cultivation plate 5 is increased, fresh air can be supplied to the plant 21 through the air passage 27. And the 1st groove | channel 31 of the plate 5 for hydroponic cultivation is mutually arrange | positioned by the positional relationship which covers the upper part of the hydroponic cultivation tank 7, and the root of the plant 21 hold | maintained in each holding hole 25 for plants is water. It is immersed in the nutrient solution 23 in the cultivation tank 7.

  Moreover, since the hydroponics plate 5 and the hydroponic culture tank 7 are both arranged substantially parallel to the longitudinal direction Y, even if the hydroponics plate 5 is slid in the longitudinal direction Y, the water culture The plant 21 moves along the hydroponic cultivation tank 7 together with the cultivation cultivation plate 5.

  Furthermore, since the air passage 27 provided in the hydroponics plate 5 is disposed along the second groove 33, it is positioned directly above the roller conveyor 15 and between the juxtaposed hydroponics tanks 7. To do. Further, as described above, since a plurality of roller conveyors 15 are attached to the long rail 41 at a predetermined interval, there are also gaps between the roller conveyors 15.

  Thereby, even if the roller type conveyor 15 is the state which the 2nd groove | channel 33 contact | abutted, the aeration path 27 is not obstruct | occluded completely, The said aeration path 27 is the gap in the hydroponics tank 7 in parallel. It will communicate, and the movement of the air in the surface side and the back surface side of the plate 5 for hydroponics is enabled. Of course, the communication relationship between the air passage 27 and the gap in the parallel hydroponics tank 7 is maintained even if the hydroponics plate 5 is slid in the longitudinal direction Y.

As shown in FIG. 14, each stage does not necessarily have to be configured by one hydroponics plate 5. For example, each hydroponics tank 7 may be divided (separated) into a plurality of sheets. . The hydroponics plate 5 used in this configuration does not need to provide the air passage 27 as a hole, and the gap between adjacent hydroponics tanks 7 can be used as the air passage 27 instead.
By comprising a plurality of hydroponics plates 5 at each stage, a plurality of types of plants 21 can be cultivated within each stage, and hydroponics plates described later for each type of plant 21 Cultivation work using 5 slides can be performed.

<Modification>
About the hydroponic cultivation apparatus 1 which concerns on one Embodiment of this invention explained in full detail until now, if it has the technical idea of this invention, a various design change is possible, and the aspect by such a design change is also this application naturally. It is included in the technical scope of the invention. Several modifications will be described below.

(1) Mist sprayer additional type 301
The detail of the mist sprayer addition type | mold 301 used as the modification of the said hydroponic cultivation apparatus 1 is demonstrated using FIG. FIG. 15 is a cross-sectional view in the lateral direction X showing an outline of the additional mist sprayer mold 301. The mist sprayer addition type 301 is provided with a mist sprayer 357 for spraying mist in the cultivation area 303, and for example, a liquid such as liquid fertilizer, liquefied carbon dioxide, or an insecticide is sprayed in place of the mist to grow the plant 321. The efficiency is further improved. (Water can be misted and sprayed as a basis, and various chemicals such as liquid fertilizers and insecticides can be added to this. Also, gas such as carbon dioxide can be sprayed in the same way as mist.)

  As shown in FIG. 15, the mist addition type 301 has the same configuration and structure of the ceiling plate 303 </ b> A, the side plate 303 </ b> B, and the column 303 </ b> C that constitute the cultivation area 303, and is positioned at the lowest level. A mist sprayer 357 is additionally provided below the hydroponics tank 307 to be operated (near the opening 317 of the side plate 303B). The said mist sprayer 357 should just be provided with the liquid conduit | pipe 359 for supplying a liquid to self, for example, and sprays the mist in the cultivation area 303 regularly or periodically. The mist sprayer 357 can be fixed by providing a dedicated shelf 313 or the like, or can be suspended by using a separate bracket (not shown) or the like.

  The mist sprayed from the mist sprayer 357 can be easily supplied to the plants 321 at each stage while passing through the air passages 327 according to the airflow in the cultivation area 303 and being transferred upward.

(2) Temperature control device additional type 401
Next, the detail of the temperature control apparatus addition type | mold 401 used as the modification of the said hydroponic cultivation apparatus 1 is demonstrated using FIG. FIG. 16 is a cross-sectional view in the lateral direction X showing an outline of the temperature control device additional mold 401. The temperature control device additional mold 401 is provided with a temperature control device 457 capable of arbitrarily adjusting the temperature in the cultivation area 403, adjusted to a temperature suitable for growing the plant 421 cultivated in the cultivation area 403, and the cultivation efficiency Is further improved.

  As shown in FIG. 16, the temperature control device additional mold 401 has substantially the same configuration and structure of the ceiling plate 403A, the side plate 403B, and the support column 403C constituting the cultivation area 403, and the side plate 403B. A duct 459 that communicates the upper side and the lower side is added, and a temperature control device 457 mounted on the duct 459 is added.

The duct 459 is a hollow cylinder made of galvanized steel, aluminum, vinyl chloride or the like used for general architectural air conditioning applications, and the diameter (hollow diameter) and length are the temperature controller additional type used. It is desirable to determine by the size of 401.
The temperature control device 457 is a heat exchanger having an air conditioning function by heat exchange, such as a small fan coil unit. It is desirable to determine the heat exchange capacity based on the volume of the cultivation area 403 to be used and the number of temperature control devices 457 installed.

  The specific structure of the temperature control device additional mold 401 is connected to the side plate 403B while one side of the duct 459 is connected above the uppermost hydroponics tank 407 and in the cultivation area 403, and the other is opened. A temperature control device 457 is connected while being inserted into the cultivation area 403 from 417. A plurality of the ducts 459 and the temperature control devices 457 are provided according to the size and shape of the cultivation area 403, and the temperature can be controlled more efficiently. In addition, in the temperature adjustment device addition type 401, a fan that generates a circulating air flow is built in the temperature adjustment device 457 instead of the exhaust fan 11, but the fan may be separated from the temperature adjustment device 457. Moreover, since the opening 417 is not blocked and fresh air can be drawn into the cultivation area 403, only oxygen-excessive air by photosynthesis is not circulated.

The air temperature-controlled by the temperature adjustment device 457 is ejected into the cultivation area 403 from the opening 417, passes through each air passage 427, and can be temperature-controlled while moving upward. Moreover, since the inside of the duct 459 becomes negative pressure by the operation of the temperature control device 457, the air in the cultivation area 403 is introduced into the duct 459 from above the cultivation area 403 (above the uppermost hydroponics tank 407). Pull in. Further, after the temperature of the drawn air is adjusted again by the temperature adjustment device 457, the air is blown into the cultivation area 403 from below the cultivation area 403 through the opening 417.
The air in the cultivation area 403 circulates through the cultivation area 403, the duct 459, and the temperature control device 457 by the above flow, and the temperature of each stage of air can be efficiently controlled.

(3) Katsura Aeration Way Type 501
Next, the details of the knotted airway type 501 as a modification of the hydroponic cultivation apparatus 1 will be described with reference to FIG. FIG. 17 is a cross-sectional view in the longitudinal direction Y showing an outline of the kink vent airway type 501. In the twisted airway type 501, the airflow passages 527 of each step are alternately arranged at the most distant positions in the longitudinal direction Y, and the air that has entered through the openings 517 is transferred in a twisted manner (in other words, the arrows in FIG. 17 As shown in (1), it is transferred in the so-called serpentine shape from the bottom to the top) and passed through the cultivation area 503.

As shown in FIG. 17, the twisted airway type 501 has substantially the same configuration and structure of the ceiling plate 503A, the side plate 503B, and the support column 503C that constitute the cultivation area 503, and the airway. 527 is irregularly arranged at each stage. More specifically, the upper and lower adjacent air passages 527 are arranged only at the most distant position in the longitudinal direction Y (for example, the air passage 527 has the right end, The stage is arranged at the left end, the third stage is arranged at the right end, ...). In addition, in order to ensure the amount of air passing therethrough, the opening ratio of the air passage 527 is the same as that of the hydroponic cultivation apparatus 1.
Thus, by intentionally arranging the position of the air passage 527 intentionally, the flow of airflow from the opening 517 to the exhaust fan 511 can be arbitrarily determined.

(4) Hydroponic cultivation apparatus 100 which can be connected In the hydroponic cultivation apparatus 1 of this embodiment mentioned above, the number of support | pillars 3c etc. is increased and it is good also as the long hydroponics apparatus 100, for example. This hydroponic cultivation apparatus 100 connects a plurality of various parts as appropriate, and the hydroponic cultivation tanks 7 in the adjacent hydroponic cultivation apparatus 1 are coupled to each other, whereby the long hydroponic cultivation of this embodiment is performed. The apparatus 100 can be configured.

  FIG. 10 shows an example of the hydroponics apparatus 100 to which the hydroponics apparatus 1 is connected, and is a cross-sectional view in the longitudinal direction Y of the first hydroponics apparatus 201A and the second hydroponics apparatus 201B that are connected. It is. As shown in FIG. 10, the hydroponic cultivation apparatus of the present embodiment is connected to the longitudinal direction Y to be elongated, and can cultivate more plants 21 at the same time.

  The first hydroponic cultivation apparatus 201A and the second hydroponic cultivation apparatus 201B are arranged so as to be in a straight line in the longitudinal direction Y in a state where both the longitudinal direction Y and the short direction X are aligned, Only one side plate B in the short-side direction X facing each other in the device 201A and the hydroponic cultivation device 201B is removed, and both end portions are abutted and fixed. Both hydroponics tanks 7 are connected by a predetermined joint or the like so that the nutrient solution 23 does not flow out, and both roller conveyors 15 need to be careful not to refract the shaft of the rail 41 by the joint. is there.

  In addition, if a gap occurs at the abutting portion between the first hydroponic cultivation apparatus 201A and the second hydroponic cultivation apparatus 201B, external light and air enter the inside through the gap, and light is supplied. In addition, since the movement of air becomes uneven, care must be taken not to generate a gap. In addition, since the cultivation area 3 can be arbitrarily determined in size, not only the connection in the longitudinal direction Y but also the lateral direction X in the cultivation area 3 is expanded to the lateral direction X. A plurality of hydroponics plates 5 can be used in parallel.

  The hydroponic cultivation apparatus 100 of the present embodiment shown in FIG. 10 is used for hydroponic cultivation until the cultivation of the plant 21 is completed when the shelf 13 is used with a minimum unit or the like having only one hydroponic cultivation plate 5. The plate 5 is used without being moved. However, when the long main hydroponics apparatus 1 is used by being connected as described above, as shown in FIG. Accordingly, the hydroponics plate 5 can be slid in the longitudinal direction Y to increase the efficiency of cultivation work.

FIG. 11 is a schematic diagram illustrating an example of cultivation work using a slide of the hydroponics plate 5.
Although the hydroponic cultivation apparatus 100 is an embodiment in which the main hydroponic cultivation apparatus 1 is elongated, only the hydroponic cultivation tank 7 of the hydroponic cultivation apparatus 1 can be connected. In this case, the hydroponic cultivation tank 1 is installed in series in the longitudinal direction Y, and the hydroponic cultivation tank 7 is connected so that the management of the concentration and temperature of the nutrient solution 23 is performed at once to facilitate the management. be able to. The hydroponic cultivation tank 7 may be connected to the hydroponic cultivation tank 7 by piping in addition to an object formed by lengthening the hydroponic cultivation tank 7. In this case, an opening is formed in the side plate 3B corresponding to the shape of the hydroponic cultivation tank 7 and the shape of the piping. In this way, when the hydroponic cultivation apparatus 1 is arranged in series, although the nutrient solution 23 used for the hydroponic cultivation tank 7 is common, each hydroponic cultivation apparatus 1 divides a certain cultivation area 3. In addition, exhaust and aeration in each hydroponic cultivation apparatus 1 can be reliably executed, or temperature conditions and the like can be set independently, and different plants 21 can be cultivated between the hydroponic cultivation apparatuses. .
In addition, when the hydroponics tank 7 is formed to be long, the breeding shown in FIG. 11 can be performed. In this case, after temporarily removing the side plate 3B between the adjacent hydroponics apparatuses 1, the hydroponics plate 5 can be slid in the longitudinal direction Y, and the side plate 3B can be installed after the slide is completed. .

2. Operational effects Next, operational effects of the hydroponic cultivation apparatus 1 and the hydroponic cultivation apparatus 100 of the present embodiment having the above-described configuration will be described. FIG. 12 is a schematic diagram showing the air flow inside the hydroponic cultivation apparatus 1 of the present embodiment.

  As shown in FIG. 12, the hydroponic cultivation apparatus 1 of the present embodiment can discharge the internal air to the outside while taking in the external air by the exhaust fan 11 provided on the ceiling board 3 </ b> A. Specifically, when the exhaust fan 11 rotates, the air inside the hydroponic cultivation apparatus 1 rises to the ceiling plate 3 </ b> A side and is discharged to the outside through the exhaust fan 11. At this time, since the inside of the hydroponics apparatus 1 is in a reduced pressure state, external air is taken into the inside through the slit 17 provided below the side plate 3B.

  As described above, the hydroponic cultivation plate 5 of the hydroponic cultivation apparatus 1 includes the aeration path 27, and air movement between the front side and the back side of the hydroponic cultivation plate 5 is possible by the aeration path 27. Therefore, the air between the hydroponics plates 5 arranged in multiple stages can easily rise to the ceiling plate 3A side without being blocked by the hydroponics plates 5.

  Thus, the hydroponic cultivation apparatus 1 of this embodiment can move the air between each shelf in an inside by operating the exhaust fan 11, and can keep it from staying partially for a long time. Moreover, since the air passage 27 provided in the plate 5 for hydroponics is provided with two or more by the predetermined space | interval, there is no bias in the movement of air and the air between each shelf can move substantially uniformly. . Therefore, the difference in the air environment (temperature, humidity, carbon dioxide concentration, air volume) between the shelves is reduced, so that the growth unevenness of the cultivated products between the shelves and in each shelf does not occur.

  The hydroponic cultivation apparatus 1 of the present embodiment supplies light necessary for the photosynthesis of the plant 21 by the lighting device 9, and the lighting device 9 is provided between the shelves. This movement prevents stagnation of the air heated by the lighting device 9 and makes the temperature in each shelf and each place uniform. Thereby, it becomes possible to make the growth environment of the plant 21 into the same conditions, and to arrange | equalize growth speed, and since the magnitude | size of the plant to ship is equal, the yield rate can be raised. Moreover, since the difference in the air environment (temperature, humidity, carbon dioxide concentration, air volume) between the shelves is reduced, the growth unevenness of the cultivated product between the shelves and in each shelf is not generated.

  Here, the following experiment was conducted in order to perform temperature comparison in the hydroponic cultivation apparatus 1 (cultivation area 3) of the present embodiment.

<Experiment 1>
A hydroponic cultivation apparatus 1 having the structure shown in FIG. 1 was produced. Specifically, the shelf 13 is arranged in three stages at 350 mm intervals in the cultivation area 3 having a width of 890 mm, a length of 1530 mm, and a height of 1600 mm as an outer diameter, and each shelf 13 has a lighting device 9 made by Toshiba Corporation. Six 23W type LED bulbs were arranged. The hydroponic cultivation tank 7 is provided with a water supply type 20 straw made of PVC, and the hydroponic cultivation plate 5 is made of polystyrene foam having a thickness of 20 mm. The hydroponics plate 5 has an air passage 27 at the center. And the reflecting plate is provided in four side surfaces of the outer periphery of the hydroponic cultivation apparatus 1, and it exists in the state into which the inflow of the air from the side was controlled. Moreover, the exhaust fan 11 discharged | emitted the air in the cultivation area 3 outside using the power consumption 54.5W by the Oriental Motor Co., Ltd. and the ventilation capability 12.8m < ³ > / min (MRE18-BH).

<Experiment 2>
Except not operating the exhaust fan 11, the same thing as the said experiment 1 was implemented.

<Experiment 3>
Except that the ventilation path 27 was not provided in the hydroponics plate 5, the same thing as the experiment 1 was carried out.

  In the above experiments 1 to 3, the ambient temperature at each shelf 13 and outside of each hydroponic cultivation device 1 was measured. The temperature measuring device used was a data logger GL-820 manufactured by GRAPHTEC, and approximately 200 mm below the lower end of the lighting device 9 in each shelf 13, the vicinity of the center in the short direction X, and the end as the measurement position. . The measurement conditions were that the measurement was started at the same time as the lighting device 9 was turned on, and the measurement was terminated after confirming that the temperature became constant from the start of the measurement (about 1 hour). The obtained results are shown in Table 1.

  As shown in Table 1, in Experiment 1 having substantially the same configuration as the hydroponic cultivation apparatus 1 of the present invention, the difference in atmospheric temperature between each shelf 13 and the outside is approximately 1 near both the center and the end. It can be confirmed that temperature uniformity is suitably achieved. On the other hand, in Experiment 2 in which the exhaust fan 11 was not operated, a remarkable temperature difference of about 5 degrees was confirmed for both the vicinity of the center and the end of each shelf 13. In Experiment 3, since the exhaust fan 11 was operated, the difference in the atmospheric temperature in each shelf 13 was small, but the hydroponics plate 5 was not provided with the through hole 27, so that the atmospheric temperature near the center of each shelf 13 was A relatively clear temperature difference could be confirmed.

  The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to these embodiments, and other embodiments may be used without departing from the spirit and teaching of the claims. There are improvements and modifications. Those skilled in the art will readily understand that all such improvements and modifications are included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Hydroponic cultivation apparatus 3 Cultivation area 3A Ceiling board 3B Side board 3C Support | pillar 5 Hydroponic cultivation plate 7 Hydroponic cultivation tank 9 Illumination device 11 Exhaust fan 13 Shelf 13A Longitudinal beam 13B Short direction beam 15 Roller type conveyor 17 Opening 19 Reflective surface 21 Plant 23 Nutrient solution 25 Plant holding hole 27 Ventilation path 29 Medium 31 First groove 33 Second groove 35 Out corner end 37 In corner end 39 End wall 41 Rail 43 Light blocking member 45 Vertical plate 47 Top Plate 49 Grasping part 51 Fixing protrusion 53 Protrusion insertion hole 55 Bending piece 100 Hydroponic cultivation apparatus 101 Ground surface 201A First hydroponic cultivation apparatus 201B Second hydroponic cultivation apparatus X Short direction Y Longitudinal direction 301 Mist addition type 303 Cultivation area 303A Ceiling plate 303B Side plate 303C Prop 307 Hydroponic cultivation tank 317 Opening 321 Plant 327 Air passage 357 Mist sprayer 359 Liquid Pipe 401 Temperature control device additional type 403 Cultivation area 403A Ceiling plate 403B Side plate 403C Post 407 Hydroponic cultivation tank 417 Opening 421 Plant 427 Air passage 457 Temperature control device 459 Duct 501 Temperature control device additional type 503 Cultivation area 503A Ceiling plate 503B Side plate 503C Strut 527 Airway

Claims (4)

A cultivation area composed of a ceiling plate having a reflective surface on the inside and two sets of opposing side plates having a reflective surface on the inside;
A plurality of long hydroponics tanks,
A hydroponics plate having a holding hole for plants and an air passage;
An exhaust port;
A lighting device;
A hydroponic cultivation apparatus comprising:
In the cultivation area,
A plurality of the hydroponic culture tanks are arranged in parallel with a predetermined interval from each other,
The hydroponics plate is disposed on the hydroponics tank so that the aeration path is located between the hydroponics tanks,
Hydroponic cultivation device characterized by. The hydroponics tank is arranged in multiple stages in the cultivation area,
The hydroponic cultivation apparatus according to claim 1. The exhaust port is disposed above the uppermost stage of the hydroponics tank,
The hydroponic cultivation apparatus according to claim 2. Including a plurality of hydroponic cultivation apparatuses according to claims 1 to 3, wherein the hydroponic cultivation tanks in the adjacent hydroponic cultivation apparatuses are connected to each other;
Hydroponic cultivation device characterized by.