JP5042328B2 - Cultivation equipment - Google Patents

Description

  The present invention relates to a cultivation apparatus.

  In recent years, planted on rooftops of buildings and roofs of factories, etc. for the purpose of responding to global warming issues, suppressing heat islands in central Tokyo, environmental measures such as air purification, and insulating buildings and preventing UV degradation A rooftop greening facility has been proposed.

  Cited Document 1 includes a cultivation tank for hydroponically cultivating a vine plant, and a culture solution supply device that circulates and supplies the culture solution to the cultivation tank, and extends the vine plant from the opening on the side of the cultivation tank. Describes a roof greening device (plant cultivation device) that covers at least part of the surface of the roof.

JP 2009-201407 A

  In this roof planting apparatus, the culture solution stored in the tank is fed by a pump. Since the culture solution contains nutrients such as phosphorus and nitrogen, the inside of the tank is in an environment where algae are easily generated. For the purpose of suppressing the generation of algae, a tank having a light-shielding property is used. However, it becomes difficult to visually recognize the amount of stored culture fluid (liquid level) in the tank.

  Therefore, it is conceivable that a transparent tube communicated with the tank is erected along the tank and the amount of the culture solution stored in the tank is confirmed by the height of the culture solution in the transparent tube. However, in this case, algae grow on the inner wall of the transparent tube, making it difficult to confirm the amount of storage.

  This invention is made | formed in view of such a situation, The objective is to make it possible to confirm the storage amount of a culture solution reliably.

  In order to solve the above problems, the present invention includes a cultivation tank in which a medium for cultivating plants is accommodated, and a light-shielding culture liquid tank that stores a culture liquid that is circulated and used between the cultivation tanks. The cultivation apparatus is provided, the inside is visible from the side and communicated with the culture medium tank, and the upper end is erected so as to be higher than the storage upper limit water level of the culture medium in the culture medium tank A light-shielding tubular member, and a light-shielding tubular member that is detachable from the visual-visible tubular member and covers the visual-visible tubular member from the outside when mounted; and an inner side of the light-shielding tubular member And a cleaning member in contact with an inner wall surface of the viewing tubular member in a state where the light shielding tubular member is mounted on the viewing tubular member.

  According to the present invention, in a state where the amount of storage is not confirmed, the light blocking tubular member is attached in a state of covering the viewing tubular member. Thereby, since external light is interrupted | blocked, generation | occurrence | production of the algae in the inside of the tubular member for visual recognition can be suppressed. When checking the storage amount of the culture solution, the light shielding tubular member is removed from the viewing tubular member. At this time, the cleaning member moves together with the light shielding tubular member. Then, the cleaning member moves while being in contact with the inner wall surface of the viewing tubular member, and scrapes off the material adhering to the inner wall surface. Therefore, even if algae or the like has propagated on the inner wall surface of the viewing tubular member, when the light shielding tubular member is removed, it is scraped off by the cleaning member, so that the amount of the culture solution stored can be reliably confirmed.

It is a perspective view explaining the whole structure of a roof greening apparatus. It is sectional drawing which shows the inside of a cultivation tank. It is a figure explaining the structure of a culture solution circulation unit. It is a figure explaining a coil-shaped cleaning tool. It is a figure explaining a spatula-shaped cleaning tool. It is a figure explaining a brush-shaped cleaning tool. It is a figure explaining the example which used the windmill as rotational power of a cleaning tool. It is a figure explaining the example which used the screw as rotational power of the cleaning tool.

  Hereinafter, embodiments of the present invention will be described. Here, the roof greening device will be described. This roof tree planting apparatus is installed for the purpose of greening the roof surface of a building such as a house, and is a cultivation apparatus for cultivating vine plants such as Hedera.

First, the overall configuration of the roof planting apparatus will be described.
As shown in FIG. 1, the roof tree planting apparatus includes a cultivation tank 1 and a culture solution circulation unit 2.

  The cultivation tank 1 is for hydroponically cultivating a vine plant, and is installed in the large ridge part 4 of the roof 3. As a vine plant cultivated in this cultivation tank 1, a perennial thing is used. From the viewpoint of being excellent in cold resistance and heat resistance and having a drooping property, a vine plant belonging to the family Araceae is preferably used. Examples of vine family plants include Hedera helix, Hedera argenisis, Hedera corsica, Hedera havanica and the like.

  The cultivation tank 1 has a rectangular parallelepiped appearance, and is configured by a box having a cavity inside. That is, as shown in FIG. 2, the cultivation tank 1 is made of a light-shielding material such as polyvinyl chloride, and has a rectangular parallelepiped cultivation tank body 5 whose upper surface is opened and the upper surface opening of the cultivation tank body 5 upward. And a cover body 6 covering from the above.

  A supply side opening 7, a drain side opening 8, and a side opening 9 (see FIG. 1) are formed on the side surface of the cultivation tank body 5. Supply side opening 7 is formed in one side plate among the side plates on the short side side that constitutes cultivation tank body 5. An upper end portion of a supply pipe 10 for supplying a culture solution is inserted into the supply side opening 7. The drain side opening 8 is provided on the side plate on the opposite side to the side plate on which the supply side opening 7 is provided among the side plates on the short side constituting the cultivation tank body 5. A tip end portion of a collection tube 11 for collecting the culture solution is inserted into the drain side opening 8. The side openings 9 are formed on both side plates on the long side constituting the cultivation tank body 5 with an interval in the long side direction. The side opening 9 serves as an outlet through which the vine plant 12 planted inside the cultivation tank 1 extends when it extends outside the cultivation tank 1.

  Inside the cultivation tank main body 5, a medium 13 for cultivating the vine plant 12 is accommodated. Plants are planted in the medium 13. In this embodiment, the vine plant 12 in the state of being nurtured in the water-permeable pot 14 is planted together with the pot 14.

  The upper end portion of the supply pipe 10 led into the cultivation tank 1 through the supply side opening 7 is connected to the spray pipe 15 on the surface of the culture medium 13. The spray tube 15 is a cylindrical member in which a plurality of culture solution spray holes 16 are formed, and is disposed along the longitudinal direction of the cultivation tank 1. The culture solution injected from each injection hole 16 penetrates the entire medium 13.

  The upper end portion of the collection tube 11 led into the cultivation tank 1 through the discharge port is embedded in the medium 13 near the bottom of the cultivation tank 1. A plurality of recovery holes 17 for recovering the culture solution are formed on the peripheral surface of the upper end portion. Therefore, the culture solution sprayed from the spray hole 16 and flowing down in the culture medium 13 flows into the recovery tube 11 from the recovery hole 17.

  The vine plant 12 extended from the side opening 9 of the cultivation tank 1 is supported by the netting material 18 and proliferates. The net member 18 is arranged along the roof surface in a state of floating from the roof surface. By supporting the vine plant 12 with the netting material 18, the vine plant 12 is prevented from directly touching the roof surface that has become hot due to the irradiation of sunlight, and the vine plant 12 is more reliably grown. .

  The culture liquid circulation unit 2 is a part for circulating the culture liquid between the culture tank 1. As shown in FIG. 3, the culture solution circulation unit 2 includes a culture solution generation unit 21, a culture solution tank 22, and a storage amount confirmation unit 23.

  The culture liquid production | generation part 21 produces | generates a culture liquid from a tap water and a concentrate. The culture medium generation unit 21 includes a check valve 24, a pressure reducing valve 25, a concentrated liquid mixer 26, a concentrated liquid tank 27, and a float 28. The check valve 24 prevents back flow of tap water flowing through the water supply pipe. The pressure reducing valve 25 reduces the pressure of tap water flowing in the supply pipe on the downstream side of the check valve 24. The concentrated liquid mixer 26 mixes the tap water that has been depressurized by the pressure reducing valve 25 and the concentrated liquid stored in the concentrated liquid tank 27 to generate a culture solution. The concentrated solution mixer 26 supplies the culture solution to the culture solution tank 22 so that the float 28 disposed in the culture solution tank 22 has a specified height.

  The culture solution tank 22 is a portion for storing a culture solution that is circulated and used with the cultivation tank 1 and is configured by a light-shielding container in order to suppress the generation of algae. For example, it is made of colored polyvinyl chloride or the like. A lower end portion of the supply tube 10 and a lower end portion of the recovery tube 11 are inserted into the culture solution tank 22. The lower end opening 10 a of the supply pipe 10 is located near the bottom surface of the culture medium tank 22, and the lower end opening 11 a of the collection pipe 11 is located above the culture medium tank 22.

  A liquid supply pump 31 is provided in the middle of the supply pipe 10. The liquid supply pump 31 sends the culture solution stored in the culture solution tank 22 toward the cultivation tank 1. An electromagnetic valve 32 is provided in the middle of the supply pipe 10 and upstream of the liquid supply pump 31. The electromagnetic valve 32 is a part that allows or blocks the flow of the culture solution in the supply pipe 10, and its operation is controlled by the time switch 33.

  The time switch 33 controls the electromagnetic valve 32 so that the culture solution is intermittently supplied to the cultivation tank 1. For example, in summer, a culture solution is supplied to the cultivation tank 1 every hour from sunrise to sunset when plants are actively photosynthesizing, and from sunset to sunrise when plants do not perform photosynthesis to the cultivation tank 1. The operation is set to stop the supply of the culture medium. On the other hand, in winter, the operation is set so that the culture solution is circulated only during the night time when the temperature is lowered to prevent the culture solution from freezing.

  Filters 34 are provided between the liquid supply pump 31 and the electromagnetic valve 32 in the supply pipe 10 and in the middle of the recovery pipe 11. These filters 34 remove foreign substances present in the culture fluid flowing through the supply tube 10 and the recovery tube 11.

  A heater 35 is disposed inside the culture medium tank 22. The operation of the heater 35 is controlled by a thermo controller 36. That is, the thermo controller 36 operates the heater 35 when the culture solution stored in the culture solution tank 22 is lower than the specified temperature, and warms the culture solution until the specified temperature is reached. Further, a drainage valve 37 is provided at the lower part of the side surface of the culture medium tank 22. The drainage valve 37 is closed when the roof planting apparatus is in operation, and is opened when the culture solution stored in the culture solution tank 22 is discharged.

  The storage amount confirmation unit 23 is a part for confirming the amount of the culture solution stored in the culture solution tank 22. The storage amount confirmation unit 23 includes a transparent pipe 41 (a tubular member for visual recognition), a light shielding pipe 42 (a tubular member for light shielding), and a coil-shaped cleaning tool 43 (a cleaning member).

  The transparent pipe 41 is a pipe material in which the interior space is filled with the culture solution by communicating with the inside of the culture solution tank 22, and the transparent pipe 41 is made of a transparent material so that the inside is visible from the side. ing. The transparent pipe 41 of the present embodiment is composed of an acrylic bottomed cylindrical pipe. The transparent pipe 41 is erected along the side surface of the culture medium tank 22, and the lower end of the pipe communicates with the culture medium tank 22 through a communication pipe 44. Further, the length of the transparent pipe 41 is determined such that the upper end of the pipe is positioned higher than the culture solution storage upper limit water level H in the culture solution tank 22. Since the culture fluid tank 22 communicates, the level of the culture fluid in the transparent pipe 41 becomes equal to the culture fluid level in the culture fluid tank 22. For this reason, the storage amount of the culture solution in the culture solution tank 22 can be confirmed from the water level of the culture solution in the transparent pipe 41.

  The light shielding pipe 42 is attached to the transparent pipe 41, thereby suppressing light from entering the transparent pipe 41. The shading pipe 42 is, for example, a cylindrical pipe made of a colored synthetic resin (polystyrene, polypropylene). As shown in FIG. 4, the inner diameter is determined to be slightly larger than the outer diameter of the transparent pipe 41. As shown in FIG. 3, the length is set to be the same as that of the transparent pipe 41. Moreover, as shown in FIG. 4, the upper end of the light shielding pipe 42 is closed with a top plate 42a (ceiling part). The top plate 42a is also made of a synthetic resin colored in the same manner as the light shielding pipe 42.

  The light shielding pipe 42 is configured to be detachable from the transparent pipe 41. That is, after the upper end of the transparent pipe 41 is inserted inside the lower end of the light shielding pipe 42, the light shielding pipe 42 is moved downward along the transparent pipe 41, so that the light shielding pipe 42 is attached to the transparent pipe 41. Further, the light-shielding pipe 42 can be detached from the transparent pipe 41 by moving the light-shielding pipe 42 in the mounted state upward along the transparent pipe 41. At the time of mounting, the light shielding pipe 42 covers the transparent pipe 41 from the outside. Thereby, the incidence of light on the transparent pipe 41 is suppressed.

  The coil-shaped cleaning tool 43 is attached to the internal space (inside) of the light shielding pipe 42. Then, in a state where the light shielding pipe 42 is attached to the transparent pipe 41, a part of the coil-shaped cleaning tool 43 is configured to be in contact with the inner wall surface of the viewing tubular member. As shown in FIG. 4, the coil-shaped cleaning tool 43 includes a shaft portion 43a and a coil-shaped portion 43b. The shaft portion 43a is provided along the longitudinal direction of the light shielding pipe 42 between the top plate 42a and the coiled portion 43b of the light shielding pipe 42 (that is, depending from the top plate 42a). The coiled portion 43b has a wire rod joined to the lower end of the shaft portion 43a and wound in a coil shape, and a cleaning brush attached to the wire rod although not shown. In this brush, for example, flexible synthetic resin thin wires are attached radially to a wire.

  The coil-shaped cleaning tool 43 is inserted into the inner space of the transparent pipe 41 when the light shielding pipe 42 is attached. When the light shielding pipe 42 is attached, the brush of the coiled portion 43 b is in contact with the inner wall surface of the transparent pipe 41.

Next, operation | movement of a roof greening apparatus is demonstrated.
In this roof tree planting apparatus, the culture solution stored in the culture solution tank 22 is adjusted to an appropriate temperature by the heater 35. When the time specified by the time switch 33 is reached, the electromagnetic valve 32 is opened and the liquid supply pump 31 is activated. As a result, the culture solution stored in the culture solution tank 22 is supplied to the cultivation tank 1 through the supply pipe 10. And the culture solution discharged | emitted from the cultivation tank 1 flows down the collection pipe | tube 11, and is returned to the culture solution tank 22. FIG. When the culture solution stored in the culture solution tank 22 is insufficient due to consumption or evaporation by the plant, the culture solution generation unit 21 operates to supply the shortage of culture solution to the culture solution tank 22.

  The light shielding pipe 42 of the storage amount confirmation unit 23 is normally attached to the transparent pipe 41 and is removed when checking the storage amount. For example, the person in charge of the roof planting apparatus periodically checks the amount of the culture solution stored in the culture solution tank 22 once a week and about 2 to 3 times a month. The shading pipe 42 is removed.

  At this time, as schematically shown in FIG. 4, the light shielding pipe 42 is drawn upward along the transparent pipe 41. And since the coil-shaped cleaning tool 43 is attached to the light shielding pipe 42, it moves with the light shielding pipe 42. Since the coil-shaped cleaning tool 43 is in contact with the inner wall surface of the transparent pipe 41, the coil cleaning tool 43 scrapes off the material adhering to the inner wall surface by movement. Therefore, even if algae or the like has propagated on the inner wall surface of the transparent pipe 41, it is scraped off by the coil-shaped cleaning tool 43 when the light shielding pipe 42 is removed.

  Thus, in the roof tree planting apparatus of this embodiment, since the light shielding pipe 42 is attached in a state of covering the transparent pipe 41 in a state where the storage amount is not confirmed, the algae in the transparent pipe 41 is blocked by outside light. Can be suppressed. And when confirming the storage amount of a culture solution, since the inner wall surface of the transparent pipe 41 is cleaned by the coil-shaped cleaning tool 43, the deposit | attachment is removed and the storage amount of a culture solution can be confirmed reliably. Moreover, since the coil-shaped cleaning tool 43 is provided with a flexible brush, the brush abuts against the inner wall surface of the transparent pipe 41 and bends, so that the algae and the like attached to the inner wall surface can be surely scraped off. it can.

  By the way, the above-mentioned embodiment is for making an understanding of this invention easy, and does not limit this invention. It goes without saying that the present invention can be changed and improved without departing from the gist thereof, and that the present invention includes equivalents thereof. For example, you may comprise as follows.

  FIG. 5 shows an embodiment in which a spatula-like cleaning tool 44 is provided in place of the coil-like cleaning tool 43. In the spatula cleaning tool 44, the shaft portion 44 a extends in the longitudinal direction of the light shielding pipe 42. And the spoke part 44b which distribute | arranged the metal wire radially is attached to the axial part 44a. Furthermore, a flexible ring-shaped spatula portion 44c is attached to the tip of the spoke portion 44b. The spatula portion 44 c is made of, for example, silicon rubber, and has a size such that the distal end portion of the spatula portion 44 c is in contact with the inner wall surface of the transparent pipe 41 with the light shielding pipe 42 attached to the transparent pipe 41. In addition, the set of the spoke part 44b and the spatula part 44c is provided at a plurality of intervals in the direction of the shaft part 44a.

  In this embodiment, the coil-shaped cleaning tool 43 has a flexible spatula portion 44 c, and the tip of the spatula portion 44 c is the inner wall surface of the transparent pipe 41 when the light shielding pipe 42 is attached to or detached from the transparent pipe 41. The algae and the like adhering to the inner wall surface can be surely scraped off by abutting and bending.

  FIG. 6 shows an embodiment in which a brush-like cleaning tool 45 is provided in place of the coil-like cleaning tool 43 and the spatula-like cleaning tool 44. The brush-shaped cleaning tool 45 has a shaft 45a that is thicker than the previous embodiments and serves as a rotating shaft. Therefore, the shaft portion 45a is attached to the top plate 42a of the light shielding pipe 42 so as to be rotatable. And the upper end part of the axial part 45a protrudes outside the top plate 42a, and the handle | steering-wheel part 45b is attached.

  A brush 45c extending radially from the shaft portion 45a is attached to the inner portion of the shading pipe 42 in the shaft portion 45a. The brush 45c is also made of a flexible thin line made of a synthetic resin, and the thin line is attached radially with the shaft portion 45a as the center. The size of the brush 45c is determined by the shading pipe 42. The tip of the brush 45 c is in contact with the inner wall surface of the transparent pipe 41 in a state where it is attached to the transparent pipe 41.

  In this embodiment, by rotating the handle portion 45b while the light shielding pipe 42 is attached to the transparent pipe 41, the tip portion of the brush 45c is rubbed against the inner wall surface of the transparent pipe 41 and attached to the inner wall surface. Scrape off algae. Similarly to the above-described embodiment, when the light shielding pipe 42 is removed from the transparent pipe 41, the tip of the brush 45c is rubbed against the inner wall surface of the transparent pipe 41 to scrape off algae and the like attached to the inner wall surface. Therefore, algae and the like attached to the inner wall surface can be scraped off more reliably.

  FIG. 7 shows an embodiment using a windmill instead of the handle portion 45b in the embodiment of FIG. In this embodiment, a vertical axis windmill 51 is provided above the light shielding pipe 42. As the vertical axis windmill 51, a Savonius type windmill or a cross flow type windmill for low speed rotation and generating a strong torque is preferable. In FIG. 7, a Savonius type windmill is used.

  And the external rotating shaft 52 connected with the rotating shaft of the vertical axis windmill 51 is connected via the joint part 53 to the upper end part of the shaft part 45a which protruded outside the top plate 42a. The joint portion 53 may be of any type as long as the rotation of the external rotation shaft 52 can be transmitted to the shaft portion 45a, but a flexible member such as a hose is preferable. This is because when the light shielding pipe 42 is removed, the light shielding pipe 42 is moved upward. However, if the joint portion 53 has flexibility, the problem of the light shielding pipe 42 colliding can be easily avoided.

  In this embodiment, the shaft portion 45 a is rotated by the rotation of the vertical axis windmill 51, and the brush-like cleaning tool 45 scrapes off algae and the like attached to the inner wall surface of the transparent pipe 41. For this reason, the inner wall surface of the transparent pipe 41 can be kept clean.

  FIG. 8 is an embodiment in which a screw 54 is provided instead of the handle portion 45b in the embodiment of FIG. In this embodiment, a screw 54 having the shaft portion 45a as a rotation shaft is fixed to the lower end of the shaft portion 45a. For this reason, when the light shielding pipe 42 is attached to the transparent pipe 41 or removed from the transparent pipe 41, the screw 54 moves up and down in the culture solution in the transparent pipe 41. At that time, the screw 54 rotates together with the shaft portion 45 a, and the brush-like cleaning tool 45 scrapes off algae and the like attached to the inner wall surface of the transparent pipe 41. For this reason, the inner wall surface of the transparent pipe 41 can be cleaned according to the attaching / detaching operation of the light shielding pipe 42.

  In each of the above-described embodiments, the materials of the light shielding pipe 42 and the transparent pipe 41 are not limited to those illustrated, and can be determined as appropriate. Moreover, it is not limited to a cylindrical shape, and may be a rectangular tube shape.

  Further, the transparent pipe 41 may not be configured to be transparent as a whole. For example, the structure which forms the transparent window part which can visually recognize a liquid level over the longitudinal direction of a pipe may be sufficient. In this case, the cleaning member should just be the structure which cleans the pipe inner wall surface corresponding to a transparent window part.

  It is also possible to combine the configurations of the embodiments. For example, the spatula-shaped cleaning tool 44 may be attached to the top plate 42a in a rotatable state, and the screw 54 may be fixed to the lower end of the shaft portion 44a.

  Moreover, this invention is applicable not only to the cultivation apparatus which grows the vine plant 12 for roof greening but to hydroponic cultivation, such as fruits, such as a strawberry, and green-yellow vegetables.

DESCRIPTION OF SYMBOLS 1 ... Cultivation tank, 2 ... Culture solution circulation unit, 3 ... Roof, 4 ... Large ridge part, 5 ... Cultivation tank main body, 6 ... Cover body, 7 ... Supply side opening, 8 ... Drainage side opening, 9 ... Side opening, DESCRIPTION OF SYMBOLS 10 ... Supply pipe, 10a ... Lower end opening of supply pipe, 11 ... Recovery pipe, 11a ... Lower end opening of recovery pipe, 12 ... Cultivation plant, 13 ... Medium, 14 ... Pot, 15 ... Injection pipe, 16 ... Injection hole, DESCRIPTION OF SYMBOLS 17 ... Collection | recovery hole, 18 ... Net | network material, 21 ... Culture-solution production | generation part, 22 ... Culture-solution tank, 23 ... Reservation amount confirmation part, 24 ... Check valve, 25 ... Depressurization valve, 26 ... Concentrated liquid mixer Concentrate tank, 28 ... float, 31 ... feed pump, 32 ... electromagnetic valve, 33 ... time switch, 34 ... filter, 35 ... heater, 36 ... thermo controller, 37 ... drain valve, 41 ... transparent pipe, 42 ... Shading pipe, 42a ... top plate, 43 ... coiled cleaning tool, 43a ... shaft , 43b ... Coiled part, 44 ... Spatula-like cleaning tool, 44a ... Shaft part, 44b ... Spoke part, 44c ... Spatula part, 45 ... Brush-like cleaning tool, 45a ... Shaft part, 45b ... Handle part, 45c ... Brush, 51 ... Vertical axis wind turbine, 52 ... External rotating shaft, 53 ... Joint part, 54 ... Screw, H ... Storage upper limit water level

Claims (7)

A cultivation apparatus comprising a cultivation tank in which a medium for cultivating a plant is stored, and a light-shielding culture solution tank that stores a culture solution that is circulated and used between the cultivation vessels,
A tubular member for visual recognition, the inside of which is visible from the side and communicated with the culture medium tank, and is erected so that the upper end is higher than the storage upper limit water level of the culture medium in the culture medium tank,
A light-shielding tubular member having a light-shielding property, detachable from the viewing tubular member, and covering the viewing tubular member from the outside when mounted;
A cleaning member attached to the inside of the light shielding tubular member, and in contact with the inner wall surface of the viewing tubular member in a state in which the light shielding tubular member is mounted on the viewing tubular member;
A cultivation device characterized by comprising: The light shielding tubular member is:
At the time of mounting, it has a ceiling part that covers the upper end of the tubular member for visual recognition from above,
The cleaning member is
An upper end is attached to the ceiling portion of the light shielding tubular member, and a shaft portion provided along the longitudinal direction of the light shielding tubular member;
The cultivation apparatus according to claim 1, further comprising: a brush portion attached to the shaft portion and in contact with an inner wall surface of the viewing tubular member at the time of mounting. The light shielding tubular member is:
At the time of mounting, it has a ceiling part that covers the upper end of the tubular member for visual recognition from above,
The cleaning member is
An upper end is attached to the ceiling portion of the light shielding tubular member, and a shaft portion provided along the longitudinal direction of the light shielding tubular member;
The cultivation apparatus according to claim 1, further comprising: a flexible spatula portion attached to the shaft portion and having a distal end portion in contact with an inner wall surface of the viewing tubular member at the time of mounting. The cleaning member is
The cultivation device according to claim 2 or 3, wherein the cultivation device is attached to the ceiling portion so as to be rotatable around the shaft portion. The cleaning member is
The cultivation apparatus according to claim 4, wherein a handle portion that is connected to the shaft portion and rotates the shaft portion is provided outside the ceiling portion. The shaft portion is
It is attached with the upper end protruding from the outside of the ceiling,
The upper end portion of the shaft portion is
The cultivation device according to claim 4, wherein the cultivation device is connected to an external rotation shaft rotated by a windmill. The cleaning member is
The cultivation apparatus according to claim 4, wherein a screw having the shaft portion as a rotation shaft is fixed to the shaft portion.

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