JP5378662B2 - Hydroponics equipment - Google Patents

Abstract

[PROBLEMS] To provide a hydroponic culture system whereby the initial cost and the running cost can be controlled each at a low level in growing plants and plants having excellent qualities can be obtained at a high productivity. [MEANS FOR SOLVING PROBLEMS] In a culture room (1), culture container units (2), each having a plurality of lighting fixtures (4) attached to the lower face of the bottom wall (3a) of a culture container (3) in which a nutrient solution (L) is pooled, are located at multiple stages at definite intervals in the longitudinal direction. On the other hand, the nutrient solution (L) is circulated between a nutrient solution tank (25) and the solution containers (3) in the individual culture container units (2). In the pathway of the circulation of the nutrient solution (L), a cooling unit (27) is provided and the culture container units (2) so that the nutrient solution (L) refluxed from the individual solution containers (3) is subjected to radiation cooling and then supplied into the individual solution containers (3). Owing to this constitution, a portion of the heat from the side of the lighting fixtures (4, 4) is absorbed by the nutrient solution (L) via the bottom wall (3a) of the culture containers (3). Thus, the heat to be transferred to the plants (11) in the culture container unit (2) on the next lower stage is decreased by the thus absorbed heat amount and the effect of the heat on the plants (11) is reduced. As a result, the interval between the culture container unit (2) on the upper stage and the culture container unit (2) on the lower stage can be narrowed and thus the number of the stages can be increased, which enables more efficient utilization of the space.

Description

  The present invention relates to a hydroponic cultivation apparatus that performs hydroponic cultivation of plants.

In recent years, as shown in FIG. 4 , when growing plants by hydroponics, cultivation containers 103 are placed on the respective shelves 101 of the growing shelves 102 provided with the multistage shelves 101, and provided on each shelf 101. In many cases, the hydroponic cultivation apparatus 100 that promotes the growth by illuminating the plant planted in each of the cultivation containers 103 by the illumination apparatus 104 (direct illumination method) is used. In this case, the growing shelf 102 is usually installed in an air-conditioned cultivation room 107 and plants are grown in an optimum growing environment. Generally, a plurality of straight fluorescent lamps 105 are arranged at a position above (see Patent Document 1).

  Further, in such a direct illumination type illumination device 104 using a straight fluorescent lamp 105, it is usual to use a reflective shade 106 in order to equalize the illuminance (see Patent Document 2).

JP 2001-346450 A JP-A-60-225302.

By the way, like the conventional hydroponic cultivation apparatus shown in FIG. 4 or Patent Document 1, the plant 108 planted in the cultivation container 103 by the lighting apparatus 104 configured by arranging a plurality of straight fluorescent lamps 105. The hydroponic cultivation apparatus 100 that illuminates the light has the following problems.

  In other words, since the illumination device 104 is a direct illumination system, there is a concern that leaf burning may occur in the plant 108 due to heat generation or radiant heat from the fluorescent lamp 105 when proximity illumination is performed close to the plant 108. For this reason, it is unavoidable that the distance between the fluorescent lamp 105 and the plant 108 is wide, and as a result, the space between the shelves 101 is wide, and the shelves that can be arranged within a predetermined height range. Since the number of steps 101 is reduced, the effective utilization of the space is reduced, the initial cost and running cost of the hydroponic cultivation apparatus 100 are increased, and the productivity as the hydroponic cultivation apparatus 100 is lowered.

  In addition, since it is a separate illumination, the illumination efficiency is poor, and therefore it is necessary to increase the number of fluorescent lamps 105 in order to ensure the optimum illuminance for growing the plant 108. As a result, the fluorescent lamp 105 The power consumption for lighting increases as the number of used lamps increases, causing a further increase in the running cost of the hydroponic cultivation apparatus 100, and the temperature of the surrounding atmosphere increases due to the heat generated from the fluorescent lamp 104, and the growth environment of the plant 108 The temperature difference in the vertical direction is increased in the hydroponic cultivation apparatus 100 due to the heat generated from the fluorescent lamp 104, and the plant 108 planted in the upper cultivation container 103 having a higher temperature and the lower temperature. There is a concern that the degree of growth is different between the plants 108 planted in the lower cultivation container 103, and the uniformity of the growth is reduced. For high costs associated with air-conditioning cultivation chamber 107 is performed to avoid, by extension it will lead to increase in the running cost of the hydroponic culture apparatus 100.

  Therefore, the present invention has been made for the purpose of providing a hydroponic cultivation apparatus capable of reducing initial costs and running costs in plant growth, and realizing high productivity and high-quality plant growth. It is.

  In the present invention, the following configuration is adopted as a specific means for solving such a problem.

In the hydroponic cultivation apparatus according to the first invention of the present application, a plurality of illuminations are provided on the lower surface of the bottom wall 3a of the cultivation container 3 in which the upper surface is opened and the nutrient solution L is stored in the cultivation room 1 whose room temperature is adjusted. vessels 4,4, while arranged in multiple stages at predetermined intervals cultivating unit 2 formed by attaching a ... vertically, the nutrient solution L of nutrient solution tank 25,該養liquid tank 25 and the respective cultivation unit Are circulated between the cultivation containers 3, 3,..., And a cooling unit 27 is interposed in the circulation path of the nutrient solution L, so that the cultivation containers 3, 3,. The hydroponic bed 10 suspended from the nutrient solution L in the cultivation container 3 is configured to be supplied by cooling to the cultivation vessel 3, 3. Formed of a resin material or a metal material having a cylindrical bottom wall 10a and a peripheral wall 10b rising from the periphery of the bottom wall 10a Shallow and dish-shaped configuration with, and in the bottom wall 10a is characterized by providing cylindrical planting openings 13, 13 which rises upward opened on the bottom wall 10a, a ....

  In the second invention of the present application, in the hydroponic cultivation apparatus according to the first invention, the cultivator unit 2 is made of a transparent or translucent material so as to cover the outside of the illuminators 4, 4,. It is characterized in that a cover material 5 made of is provided.

  In 3rd invention of this application, in the hydroponic cultivation apparatus which concerns on the said 2nd invention, the vent holes 6 and 7 which connect the internal space 8 of this cover material 5 in the said cultivation room 1 are made to the said cover material 5. It is characterized by providing.

  In the present invention, the following effects can be obtained.

(A) In the hydroponic cultivation apparatus according to the first invention of the present application, on the lower surface of the bottom wall 3a of the cultivation container 3 in which the upper surface is opened and the nutrient solution L is stored in the cultivation room 1 whose room temperature is adjusted. a plurality of illuminators 4,4, while placing the cultivating unit 2 formed by attaching a ... in multiple stages at predetermined intervals in the vertical direction, the nutrient solution L of nutrient solution tank 25,該養liquid tank 25 and the respective While circulating between each cultivation container 3, 3, ... of cultivation unit 2,2, ..., the cooling unit 27 is interposed in the circulation path of the said nutrient solution L, and each said cultivation container 3,3 The hydroponics bed which is constructed so that the reflux nutrient solution L from the heat is cooled and supplied to each of the cultivation containers 3, 3 ,. 10 is a resin material or gold provided with a thin plate-like bottom wall 10a and a peripheral wall 10b rising from the periphery of the bottom wall 10a. A shallow dish-shaped configuration formed of wood, and in the bottom wall 10a has a cylindrical planting openings 13, 13 which rises upward opened on the bottom wall 10a, a ... provided.

  (A-1) Accordingly, the illuminators 4, 4,... Of the upper cultivator unit 2 and the cultivating container 3 of the lower cultivator unit 2 are opposed to each other in the vertical direction. Since the plant 11 planted on the hydroponic bed 10 suspended in the nutrient solution L in 3 directly faces the illuminators 4, 4,... Of the upper cultivator unit 2, the illuminator Because of exposure to high-temperature air heated by the generated heat of 4, 4,... And radiant heat from the illuminators 4, 4,.

  However, in this invention, since the said illuminator 4, 4, ... is attached to the lower surface of the bottom wall 5a of the said cultivation container 3, the generated heat of this illuminator 4, 4, ...... or the illuminator 4, 4. A part of the radiant heat from... Moves through the bottom wall 3a of the cultivation container 3 by heat conduction and is absorbed by the nutrient solution L in the cultivation container 3, and only the amount of heat absorbed to the nutrient solution L side. The amount of heat transmitted to the plant 11 of the lower cultivator unit 2 is reduced (in other words, the thermal effect on the plant 11 is reduced). Moreover, since the heat absorbed by the nutrient solution L is radiated in the cooling unit 27 when the nutrient solution L circulates between the cultivation vessel 3 and the nutrient solution tank 25, the nutrient in the cultivation vessel 3 The liquid L is always maintained at an appropriate temperature regardless of the heat absorption, and the endothermic action on the nutrient liquid L in the cultivation container 3 is continuously performed.

  Therefore, since the heat influence to the said plant 11 is reduced by the heat absorption to the nutrient solution L side of the said cultivation container 3, for example, the arrangement | positioning space | interval of the cultivator unit 2 of the upper stage side and the cultivator unit 2 of the lower stage side In other words, it is possible to increase the number of stages of the multi-stage arrangement of the cultivator unit 2 to increase the effective utilization of the space, and thereby it is possible to reduce the initial cost and running cost of the hydroponic cultivation apparatus. At the same time, plant productivity as a whole hydroponic cultivation apparatus is improved.

  (A-2) Moreover, the illumination efficiency of the said illuminator 4 is raised because the arrangement | positioning space | interval of the upper cultivation device unit 2 and the lower cultivation device unit 2 is narrowed. As a result, for example, the reduction in the running cost of the hydroponic cultivation apparatus can be expected by reducing the number of the illuminators 4 arranged by the improvement in illumination efficiency and suppressing the power consumption for illumination.

(A-3) Further, the hydroponic bed 10 suspended in the nutrient solution L in the cultivation container 3 is a resin material provided with a thin plate-like bottom wall 10a and a peripheral wall 10b rising from the periphery of the bottom wall 10a or Since the bottom wall 10a is provided with a cylindrical planting opening 13, 13,... That is open on the bottom wall 10a and rises upward. The hydroponics bed 10 has higher heat conductivity than, for example, a foamed resin material. Therefore, the surface side of the nutrient solution L is covered by the hydroponics bed 10 suspended here. Even if it is broken, the absorption action to the nutrient solution L in the cultivation container 3 in the lower cultivator unit 2 of the heat generated in each illuminator 4, 4,. Is done. That is, heat transfer between the pair of cultivator units 2 and 2 facing in the vertical direction is promoted.

As a result, due to a synergistic effect with heat transfer in the same cultivator unit 2, that is, heat transfer to the nutrient solution L in the cultivation container 3 through the bottom wall 3a of the cultivation container 3, the above (a-1). And the effect as described in (a-2) is further accelerated | stimulated.

  (B) In the second invention of the present application, in the hydroponic cultivation apparatus according to the first invention, the cultivator unit 2 is transparent or semi-transparent so as to cover the outside of the illuminators 4, 4,. Since the cover material 5 made of a transparent material is provided, the cover material 5 divides the internal space 8 in the vicinity of each of the illuminators 4, 4,. Thus, heat transfer due to convection from the inner space 8 to the outer space is prevented. As a result, the heat absorption action to the nutrient solution L side of the cultivation container 3 is promoted, and the thermal effect on the plant 11 in the lower cultivator unit 2 is reduced, and by the synergistic action, the above (a) The effect described in 1 is further promoted.

  (C) In the third invention of the present application, the cover material 5 is provided with vent holes 6 and 7 for communicating the internal space 8 of the cover material 5 with the inside of the cultivation room 1. A part of the air flow that circulates in the cultivation room 1 with air conditioning flows into and out of the internal space 8 from the vents 6 and 7. Among them, the heat that has not been absorbed on the nutrient solution L side of the cultivation container 3 is absorbed on the indoor air side that flows into and out of the internal space 8, and as a result, the thermal effect on the plant 11 in the lower cultivator unit 2. Is further reduced, and the effect described in the above (b) is further ensured.

  Hereinafter, the present invention will be specifically described based on preferred embodiments.

[Embodiment]
Figure 1 shows a hydroponic apparatus according to the implementation embodiments of the present invention. In this hydroponic cultivation apparatus, the following cultivation unit 2 is arranged in multiple stages (for example, 6 stages or 8 stages) in a vertical direction in a cultivation room 1 of a predetermined size whose room temperature is adjusted by an air conditioner 28. Configured.

  As shown in FIGS. 1 and 2, the cultivator unit 2 includes a cultivation container 3 and each illuminator 4 described below.

  The cultivation container 3 is formed so as to have a rectangular shallow dish-like appearance having a predetermined size, and the nutrient solution L is stored therein, and the plant 11 is placed on the liquid surface of the nutrient solution L. A plurality of hydroponic beds 10 to be planted are levitated. As will be described later, the cultivation container 3 is formed of a material having good heat conductivity, for example, a copper plate, an iron plate, a good heat transfer resin plate, and the like, because the nutrient solution L is used as a heat medium for heat dissipation. .

  Moreover, this cultivation container 3 comprises a part of nutrient solution circulation system mentioned later, and the nutrient solution L is supplied through the nutrient solution supply pipe 21 from the one end side of the long side direction of this cultivation container 3. At the same time, the nutrient solution L in the cultivation vessel 3 is discharged from the other end side of the cultivation vessel 3 through the nutrient solution reflux pipe 22.

  On the lower surface of the bottom wall 3 a of the cultivation container 3, an illuminator 4 made of a straight tube fluorescent lamp is attached by a fixture 9 at a predetermined interval in the long side direction of the cultivation container 3 and the irradiation light is directed downward. In this manner, a plurality (9 in this embodiment) are attached.

  As shown in FIGS. 1 and 2, the cultivator unit 2 configured as described above is placed on the cultivation shelf 40 described below.

The cultivation shelf 40 is a multi-stage frame-like body having a rectangular planar shape, as shown by chain lines in FIGS. 1 and 2, and a plurality of support columns 41, 41,. 41, ... and between the back side of each strut 41 and 41, crossbeam 42, 42 for connecting the ... horizontally multistage position, and ..., and Yokoketazai 42 on the front side back side Are provided with support bars 43, 43,.

  The cultivator unit 2 is placed on the support bars 43, 43,. The placement state of the cultivator unit 2 is shown in FIG. In this placement state, the bottom wall 3a of the cultivation container 3 is placed directly on the support bar 43 of the cultivation shelf 40, and the illuminators 4, 4,. It is located between the support bars 43, 43,.

In the cultivating unit 2 placed at the top, its has the upper surface of the culture vessel 3 is covered depending on the lid, the said culture vessel 3, as well as other culture unit 2, the nutrient solution Although L is stored, the hydroponics bed 10 is not provided here.

In the state where the cultivator unit 2 is thus placed, the cover material 5 described below is attached to the lower side of the cultivator unit 2. This cover material 5 is composed of a transparent or translucent acrylic plate or film arranged so as to cover the outside of each illuminator 4, 4,. are composed of a transparent acrylic plate in the form), covering each illuminator 4,4, a bottom portion 5a covering from its lower side .., respective illuminators 4,4, a ... from its side A side surface portion 5b is provided, and is attached to the column 41 side via attachment brackets 44, 44,.

  When the cover member 5 is attached, a vent hole 6 is provided in the peripheral portion of the bottom surface portion 5a of the cover member 5, and a vent hole 7 is provided in the upper end portion of the side surface portion 5b of the cover member 5. It has been. Therefore, the internal space 8 inside the cover material 5 communicates with the indoor space of the cultivation room 1 through the ventilation hole 6 and the ventilation hole 7.

  FIG. 1 shows a state in which the cultivator unit 2 is placed on the cultivation shelf 40. In this state, the cultivator units 2, 2,... Are arranged in multiple stages at predetermined intervals in the vertical direction. In this way, the nutrient solution L is placed between the cultivation containers 3, 3,... Of the cultivator units 2, 2,... Arranged in multiple stages and the nutrient solution tank 25 arranged in the cultivation room 1. In order to circulate, the nutrient solution circulation system 20 described below is provided.

  The nutrient solution circulation system 20 includes a nutrient solution supply pipe 21 for supplying the nutrient solution L to the cultivation containers 3, 3,... By the pumping action of the nutrient solution pump 26, and the cultivation containers 3, 3, ..A nutrient solution recirculation pipe 22 for refluxing the nutrient solution L in the nutrient solution tank 25 to the inside of the cultivation room 1 between the nutrient solution supply pipe 21 and the nutrient solution reflux pipe 22 A cooling unit 27 installed outside is interposed.

  The cooling unit 27 cools the nutrient solution L introduced from the nutrient solution reflux pipe 22 and discharges the nutrient solution L again to the nutrient solution supply pipe 21 side. The cooling unit 27 includes, for example, a water-cooled or air-cooled chiller. The

  Here, the use state etc. of the hydroponic cultivation apparatus comprised with the said cultivator unit 2 are demonstrated.

When cultivating a plant using the hydroponic cultivation apparatus, as shown in FIG. 1, the cultivation containers 3 of the cultivator units 2, 2,. 3... Are filled with an appropriate number of hydroponic beds 10 in which the nutrient solution L is filled and plants 11 are planted. Further, each cultivating unit 2, 2, ... of each illuminator attached to the lower surface 4, 4, is lit · cultivation vessel in cultivating unit 2 of the lower side located thereunder The three plants 11, 11,... Are illuminated to promote their photosynthesis and promote their growth.

  On the other hand, the room temperature of the cultivation room 1 is adjusted to an optimum temperature for cultivation of the plant 11 by the air conditioner 28. In each of the cultivation containers 3, the nutrient solution L from the nutrient solution tank 25 is cooled (heat dissipated) to a temperature (about 19 ° C.) suitable for hydroponics in the cooling unit 27, and then the nutrient solution While being supplied through the supply pipe 21, the nutrient solution L in the cultivation container 3 is returned to the nutrient solution tank 25 side through the nutrient solution reflux tube 22, whereby the nutrient solution L (nutrient whose temperature has been raised by heat absorption) The liquid L) is circulated between the cultivation containers 3, 3,... And the nutrient solution tank 25.

  In this way, the plant 11 is cultivated using the hydroponic cultivation apparatus. In this case, the illuminators 4, 4,... Of the upper cultivator unit 2 and the lower cultivator unit 2 are cultivated. The plant 11 is opposed to the container 3 in the vertical direction, and the plant 11 planted on the hydroponic bed 10 suspended in the nutrient solution L in the cultivation container 3 is the illuminator of the upper cultivator unit 2. Since it directly faces 4, 4,..., It is exposed to high-temperature air heated by the heat generated by the illuminators 4, 4... And radiant heat from the illuminators 4, 4,. Become.

However, in this embodiment,
(I) Since the illuminators 4, 4,... Are directly attached to the lower surface of the bottom wall 3 a of the cultivation container 3, the generated heat of the illuminators 4,. A part of the radiant heat from the heat moves through the bottom wall 3a of the cultivation container 3 by heat conduction (see the white arrow H1 in FIG. 2) and is absorbed by the nutrient solution L in the cultivation container 3, and this nourishment The amount of heat transmitted to the plant 11 of the lower cultivator unit 2 is reduced by the amount of heat absorbed to the liquid L side. Moreover, since the nutrient solution L whose temperature has increased due to heat absorption is radiated in the cooling unit 27 when circulating between the cultivation vessel 3 and the nutrient solution tank 25, the nutrient solution L in the cultivation vessel 3 is Despite the absorption of heat, the temperature is always maintained at an appropriate temperature, and the endothermic action on the nutrient solution L in the cultivation container 3 is continuously performed.
(B) Furthermore, since the cover unit 5 made of a transparent or translucent material is provided on the cultivator unit 2 so as to cover the outside of each of the illuminators 4, 4,. Even if the temperature in the internal space 8 inside of the heater rises due to the heat generated from each of the illuminators 4, 4,..., It moves to the vicinity of the plant 11 of the lower cultivator unit 2 by convection. It is suppressed and the thermal effect on the plant 11 is suppressed. Moreover, in this case, since the high-temperature air in the internal space 8 is sealed in the internal space 8, the heat absorption action toward the nutrient solution L of the cultivation container 3 is promoted.
(C) Since the cover material 5 is provided with the vent holes 6 and 7 for communicating the internal space 8 into the cultivation room 1, the air conditioner 28 is adapted to air-condition the cultivation room 1. A part of the air flow A circulating in the cultivation room 1 flows into the internal space 8 from the lower ventilation hole 6 and flows into the cultivation room 1 from the upper ventilation hole 7 as shown by A in FIG. It flows so as to flow out. Under the present circumstances, the heat which was not absorbed by the nutrient solution L side of the said cultivation container 3 among the heat | fever which exists in the said internal space 8 is absorbed by the airflow A which flows in and out of this internal space 8, and this air conditioning Heat is radiated to the outside by heat exchange in the machine 28.

  As a synergistic effect of these (i) to (c), the cultivator unit 2 in which the generated heat of each illuminator 4, 4,... And the radiant heat from each illuminator 4, 4,. The heat effect on the plant 11 is made as small as possible, and the arrangement interval between the upper cultivator unit 2 and the lower cultivator unit 2 can be reduced accordingly.

  As a result, proximity illumination by the illuminator 4 is realized, and the initial cost can be reduced by reducing the number of the illuminators 4 arranged, or the running cost can be reduced by reducing the power consumption of the illuminator 4.

  Moreover, since the number of stages of the multi-stage arrangement of the cultivator unit 2 can be increased to increase the effective utilization of the space and the height of the cultivation room 1 can be reduced, the initial cost of the hydroponic cultivation apparatus In addition, the running cost can be further reduced.

Furthermore, in the embodiment of the present application, the hydroponic bed 10 is configured as follows. That is, the hydroponic bed 10, as shown in FIGS. 2 and 3, has a shallow dish shape configuration having a peripheral wall 10b rising from the periphery of the thin plate-like bottom wall 10a and the bottom wall 10a, a resin material or It is integrally formed of a metal material. The bottom wall 10a is provided with cylindrical planting openings 13, 13,... That open on the bottom wall 10a and rise upward.

Thus, when the hydroponic bed 10 is formed in a shallow dish shape with a resin material or a metal material, for example, the heat conductivity is higher than when the hydroponic bed 10 is configured with a foamed resin material. Therefore, even if the surface side of the nutrient solution L is covered by the hydroponics bed 10 suspended here, the heat generated in each illuminator 4, 4,. The absorption action to the nutrient solution L in the lower cultivation container 3 is ensured. That is, heat transfer between the upper cultivator unit 2 and the lower cultivator unit 2 is promoted (see the white arrow H2 in FIG. 2 ).

As a result, heat transfer in the same cultivator unit 2, that is, the nutrient solution L side in the cultivating container 3 from the illuminators 4, 4,. Due to the synergistic action with the heat transfer to the plant (see the white arrow H1 in FIG. 2 ), the thermal effects from the lighting devices 4, 4,... As a result, further proximity illumination becomes possible, and further reduction in initial cost and running cost of the hydroponic cultivation apparatus can be expected.

It is a perspective view which shows the whole structure of the hydroponic cultivation apparatus provided with the cultivator unit which concerns on embodiment of this invention. It is an expanded sectional view of the cultivator unit part in FIG. It is a perspective view of a hydroponic beds shown in Figure 2. It is a side view of the conventional hydroponic cultivation apparatus.

1 ·· Growing room 2 ·· Grower unit 3 ·· Cultivation container 4 ·· Lighting device 5 ·· Cover material 6 ·· Vent 7 ·· Vent 8 ·· Internal space 10 ·· Hydroculture bed 11 ·· Plant 13 ··· Opening for planting · · · Nutrient solution circulation system 21 · · Nutrient solution supply pipe 22 · · Nutrient solution reflux tube 25 · · Nutrient solution tank 26 · · Nutrient solution pump 27 · · Cooling unit 28 · · Air Harmonizer 40 ・ ・ Cultivation shelf 41 ・ ・ Struts 42 ・ ・ Wider girder 43 ・ ・ Supporting bar 44 ・ ・ Mounting bracket L ・ ・ Nutrient solution A ・ ・ Air flow

Claims (3)

A plurality of illuminators (4) on the lower surface of the bottom wall (3a) of the cultivation container (3) in which the upper surface is opened and the nutrient solution (L) is stored in the cultivation room (1) in which the room temperature is adjusted. 4) While arranging the cultivator unit (2) to which the ... is attached in multiple stages at predetermined intervals in the vertical direction,
The nutrient solution (L) in the nutrient solution tank (25) is divided into the nutrient solution tank (25) and each of the cultivator units (2), (2),..., Each of the cultivation containers (3), (3), .. and circulating between
A cooling unit (27) is interposed in the circulation path of the nutrient solution (L), and the reflux nutrient solution (L) from each of the cultivation containers (3), (3),. cultivation vessel (3), (3), it is configured to supply to ...,
The hydroponics bed (10) suspended in the nutrient solution (L) in the cultivation container (3) has a thin plate-like bottom wall (10a) and a peripheral wall (10b) rising from the periphery of the bottom wall (10a). A cylindrical planting opening (13) having a shallow dish-like shape made of a resin material or a metal material and having an opening on the bottom wall (10a) and rising upward on the bottom wall (10a). , (13), ... are provided, and the hydroponic cultivation apparatus characterized by the above-mentioned . In claim 1,
The cultivation unit (2) is provided with a cover (5) made of a transparent or translucent material so as to cover the outside of each of the illuminators (4), (4),. A hydroponics device. In claim 2,
The cover material (5) is provided with vents (6) and (7) that allow the internal space (8) of the cover material (5) to communicate with the cultivation room (1). Hydroponic cultivation equipment.

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