JP3201855U - Agriculture greenhouse greenhouse - Google Patents

Abstract

[PROBLEMS] To effectively irradiate the crops in a multi-row house without losing almost all of the sunlight poured from the roof of the multi-row house as a shade, and to extend the most precious irradiation time for the cultivated plants. In addition, by uniformizing the amount of light received by the crops in each building, the quality of the crops in the house is improved and uniformed, prevention of disease, etc., and the harvest is high and economical. Provide a multi-storey greenhouse house. In an agricultural greenhouse greenhouse with a rain gutter 6 in a roof valley of each building M, which is partitioned by a heat insulating curtain 8 that opens and closes the attic room Y and the cultivation room S of each building, the attic of each building A reflector 9 that reflects sunlight received from the roof toward the cultivation room S at a predetermined position in the room Y is disposed in the depth direction between the roof and the heat insulating curtain 8. [Selection] Figure 2

Description

  The present invention relates to a greenhouse greenhouse for agriculture, and more particularly to a technology for effectively utilizing sunlight incident on a greenhouse greenhouse for cultivation of commercial crops such as tomatoes, cucumbers and strawberries.

  In greenhouse greenhouses for winter agriculture used for forcing, wintering cultivation of tomatoes, cucumbers, strawberries, etc. that are cultivated for agriculture, light that shines directly on the cultivated crops in the house, The light that is received by the reflective material provided in the house, refracted inside, and applied to the cultivated crop has been devised to produce high quality and high yield by shining the sun directly on the cultivated crop in the house .

For example, a single-type roof-type greenhouse house with the ridge facing east-west, widening the roof on the south side to increase the amount of light received, providing a reflector on the roof and wall on the north side, There is one that reflects the light incident from the roof of the roof to the cultivated crop by reflecting it inside (see, for example, Patent Document 1).
In addition, it is a single-walled greenhouse greenhouse with the ridge facing east-west, and a reflector is provided near the north wall, and this reflector can be moved to the south depending on the season, or as necessary. There are some which effectively irradiate the cultivated plant inside by changing the length of the length (for example, see Patent Document 2).

However, these inventions are effective including economy in small-scale products, but when applied to products of 500 square meters or more, the equipment cost related to the reflector is small. The initial capital investment including the building that prepares the cultivation environment (temperature, humidity, light reception conditions) and management and maintenance costs such as fuel costs for heat insulation are increasing, which is putting pressure on management.

On the other hand, as the entrance (4-5m) and height (3-4m) of each building, by minimizing the volume in the house, the initial equipment investment for buildings, heaters, etc., management and maintenance costs such as fuel costs for heat insulation A greenhouse house suitable for a profitable base, etc. is an agricultural greenhouse (3 or more, 500 square meters or more).
In addition to the reduced amount of light received (about 50%), this agricultural greenhouse greenhouse has the same floor area compared to a single-roofed greenhouse. However, there are problems (described later) that were not found in the single-roofed greenhouse house resulting from the structure of the continuous building type, and improvements in the quality of crops, the yield, and the occurrence of diseases are desired.
This improvement is particularly noticeable for about two months (from late November to early February) before and after the winter solstice where the light reception conditions are very severe and the sun's elevation angle is small.

In other words, when using a heating machine such as wintering cultivation or forcing cultivation, the insulation curtain (one layer, two layers, three layers, etc., and various materials) is indispensable for saving heating costs in winter. There is a warm curtain in each building that is closed at night and opened in the daytime. The opening portion of the heat insulation curtain, the rain gutter provided at the joint of each building, and the adjacent roof become so-called invalid incident light that shades the agricultural greenhouse greenhouse.
Especially for cultivated crops such as tomatoes, cucumbers, and strawberries, 30 to 40% of sunlight is lost by this shaded part in the season when the sunlight is weak and the elevation angle of illumination is small. This shade area causes many developmental disorders such as poor coloring, poor fruiting, and frequent illness due to high humidity.

If the deterioration factors of the light receiving conditions are arranged, the following disadvantages are attributed to the fact that the width and height of each building are suppressed, and are particularly noticeable when the sun's elevation angle is small in winter.
1. Increase in shaded areas caused by the increase in rain gutters installed between each building.
2. Increase in shade due to the warming curtain gathering part that occurs when the warming curtain provided on the ceiling side is opened.
3. Increased shade due to the roof of the front wing caused by the construction of multiple buildings.
4. Reduction of the effective light receiving area of the roof caused by narrowing the entrance of each building (4-5 meters).
5. Reduction of effective irradiation time from the roof in the early evening caused by the heat insulation curtain being closed during the heater operation.

JP-A-63-1119629 Japanese Patent Laid-Open No. 07-203777

The present invention has been made in view of the above-mentioned conventional drawbacks, and it can be used as a cultivated crop in a continuous house without losing almost all of the sunlight poured from the roof of the continuous house as a shade. Improve and homogenize the quality of the cultivated crops in the house by effectively irradiating, extending the irradiation time that is most precious for the cultivated crops, and making the received light amount of the cultivated crops in each ridge uniform. The purpose of this project is to provide agricultural greenhouses with high yields and excellent economic efficiency in order to prevent disease and so on.

  In order to achieve the above object, the present invention divides the attic room and the cultivation room of each building with a heat insulation curtain for opening and closing each building and connecting the roof and the roof of the adjacent building. In the greenhouse greenhouse with the rain gutter and the heat insulation curtain at the bottom of the gutter, the ridges are arranged in the roof ridge direction at predetermined positions in the attic rooms of the respective ridges. It is a component provided with a reflector that reflects the received sunlight toward the cultivation room, constitutes a greenhouse greenhouse for agriculture, and the surface of the reflector sheet of the reflector is formed by aluminum vapor deposition about.

  Further, the predetermined position of the reflector is a moving point that can move horizontally between the frontage, and the means for the movement is a fulcrum on the arch roof skeleton at or near both ends of the reflector rail. As above, operate by pulling one end of the wire or string.

  If the ridge is installed in the north-south direction, the reflector is a reflector that reflects on both sides, and is placed on the west side of the ridge in the morning and moved to the east side of the ridge in the afternoon. It may be arranged.

  In the case where the building is installed in the east-west direction, the reflector is a reflector that reflects on one side, and may be arranged on the north side of the building throughout the day.

  Further, the reflector may be capable of changing the angle and length.

  The predetermined position varies depending on the installed latitude and longitude, but the basic position is a contact point where the elevation angle of the sun in contact with the roof N is in the extreme cold season.

As is clear from the above description, the present invention has the following effects when compared with an agricultural greenhouse with no reflector.
(1) The sunlight that is inserted into the attic during the time when the morning warming curtain is closed warms the attic rapidly by the reflector, so the morning warming curtain opens earlier, and in the same way the evening warming curtain Since the time for closing is delayed, the irradiation time of the day becomes longer.
(2) In the time zone when the heat insulation curtain is open, the reflector reproduces most of the loss incident light that is originally shaded as reflected light and returns it to the cultivation room, so that the effective incident light quantity of the cultivation room increases.
(3) Since the direct incident light from the roof and the light reflected by the reflector hit the cultivated crops planted in a row in the ridge direction of the cultivation room, the cultivated crops Therefore, it is possible to measure the uniformity of the amount of light received in each building as well as the sun without any fine shade.
(4) As described above, the quality and uniformity of the cultivated crops in the house can be improved, disease prevention and the like can be achieved, and a greenhouse with high yield and excellent economic efficiency can be provided.

In addition to the above effects, the following effects can be obtained when compared with a single greenhouse greenhouse for greenhouses equipped with a reflector.
(5) Since the initial equipment cost is greatly reduced and the heating cost is also greatly reduced, the profitability is greatly improved.

1 is an overall perspective view of an embodiment for carrying out the present invention. The perspective view seen from the frontage side of embodiment same as the above. Explanatory drawing of utilization of the reflector in the same embodiment. Light reception explanatory drawing of the middle of January in Example 1 (south and north wing) same as above. (A) Plan at morning (8:30) (B) Plan at south and middle (C) Plan at evening (15:30) (D) Front view at morning (8:30) (frontage is front) E) Morning (8:30) side view Explanatory drawing of the sunlight reception in Example 1 same as the above (mid-January, 8:30 in the morning). Light reception explanatory drawing of the middle of January in Example 2 (east-west building) same as the above. (A) Morning, noon (South and Central), evening plan view (B) Morning (8:30) front view (side wall in front) (C) Evening (15:30) side view The figure which shows the movement means of a reflective sheet

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the device shown in the drawings will be described in detail with reference to the drawings. In the description, items common to the embodiments will be described first, and then the form of utilization will be described as embodiments 1 and 2.

The structure of an agricultural greenhouse greenhouse, which is common to the first and second embodiments for carrying out the present invention based on FIGS. 1 to 3, the growing process of cultivated plants throughout the year, and the sun at that time The light reception status and the management status of the heater, reflector, and heat insulation curtain will be described.

In the figure, reference numeral 1 denotes a 6-storied arch roof type greenhouse (hereinafter referred to as a house). The width of each building's frontage (M) is 4 meters (total width of the frontage is 24 m), and the side wall (O) is the depth. It is a three-dimensional structure consisting of 1 to 6 flat rectangles (864 square meters) having a length of 36 m, a height (H) of 3.3 m, and a roof height (h) of an arched roof (N) of 1.4 m. .
The one where the frontage M faces the north-south direction in the depth direction is called a north-south building (Example 1), and the one that faces the east-west direction is called an east-west building (Example 2).

Inside this house 1 are struts 2 that are erected in a grid pattern on a foundation (not shown) that is foundation-worked at intervals of 4 m across, and a horizontal beam that connects the struts 2 in a grid pattern. There is a structure that is the core of a strong steel 1 house consisting of three. The roof N, the gutter 6 and the side wall O are attached with this strong structure as a core.
The roof N is obtained by stretching a translucent outer poly film (not shown) stretched over a plurality of years on the outer periphery of the arch-shaped roof skeleton 4. The roof skeleton 4 has an arch member 40 formed by processing a pipe material in an arch shape at intervals of 50 cm in the depth direction of the ridge, and the arch member 40 is reinforced in a skewered shape in the depth direction. Straight pipe).
The side wall O is obtained by stretching a poly film (not shown) on the outer periphery of the side wall skeleton 5 made of a pipe-shaped steel material processed into an arcuate shape.

Furthermore, an interior device shown below is attached inside the house 1. Reference numeral 7 denotes first and second curtain rails, which are stretched up and down 20 cm apart between the support columns 2 in the width direction of the frontage M.
Reference numeral 8 denotes a double heat-insulating curtain arranged on the curtain rail 7, which has a width of the frontage M and has a depth of 36 m as a unit. The heat insulating curtain 8 is divided into two at the center of the width of the frontage M, and is opened and closed while sliding on the respective curtain rails 7. The remaining width (m) of each opened insulation curtain 8 is about 35 cm. The upper part is the attic room Y and the lower part is the cultivation room S with the heat insulation curtain 8 as a boundary.

The opening / closing operation (conditions) of the heat insulation curtain 8 is performed in conjunction with the operation of a heater (not shown) so that the temperature of the cultivation room S does not fall below a predetermined temperature (P ° C.) that is the lower limit for the cultivated plant. In the following two conditions, an operation for closing the heat insulating curtain 8 is performed, and when the conditions are not satisfied, an operation for opening the heat insulating curtain 8 is performed.
Condition 1: When there is no sunlight incident on the house 1 and the temperature of the cultivation room S is equal to or lower than a predetermined temperature (P ° C.), the insulation curtain 8 is always closed and the heater is operated to operate the cultivation room S. Maintain the temperature above a predetermined temperature (P ° C.) (a cloudy day falls between sunset and before dawn).
Condition 2: Even if there is sunlight incident on the house 1, if the temperature of the attic Y is equal to or lower than a predetermined temperature (P ° C.), the heat insulating curtain 8 is closed and the temperature of the cultivation room S is the predetermined temperature ( Heating operation is performed so that the temperature is higher than (P ° C.) (applicable to early morning and evening in the extremely cold season).
This operation is performed by manual or automatic operation means (not shown) according to the scale of the house 1.

Reference numeral 9 denotes a reflector disposed in the attic room Y, in which a reflection sheet 92 is suspended from a reflection shaft 91 disposed in the depth direction of each building. The reflection sheet 92 has an aluminum foil formed on the surface of a thin resin by aluminum vapor deposition. The reflection shaft 91 is movably attached on a reflector rail 93 that is fixed horizontally using the roof reinforcing member 41. The mounting position is such that the contact point (K) between the incident light with an incident angle of 30 ° and the roof N of the house 1 is the starting point, and the contact point between the incident light with an incident angle of 150 ° and the roof N of the house 1 is the end point. It is attached. The reflector 9 includes a reflecting sheet 92 having a length that hangs down so that the lower end of the reflecting plate 92 reaches the curtain rail 81, and has a width extending over the entire length, and a reflector shaft 91 is provided as necessary. It has a reflection angle variable function that can change the reflection angle toward the inside of the house 1 around the center, a length adjustment function that adjusts the length, and a position movement function that moves on the reflector rail. As shown in FIG. 7, the position movement function uses the tension when pulling one end of the wire or string 10 with the arch roof skeleton 41 at the both ends of the reflector rail 93 or in the vicinity thereof as a fulcrum. Thus, the reflection sheet 92 is moved. Although the variable reflection angle mechanism and the length adjustment mechanism are not shown, manual operation or automatic operation may be selected by known means according to the scale.

Next, I will explain how to use House 1 throughout the year (see Figure 3).
-From planting time to growing season (August-September)-
During the hot summer season, the house 1 covered with a light-transmitting outer poly film reaches close to 50 degrees during the day, even if a ventilator (not shown) is used, and fights against high temperature obstacles. In mid-August, tomatoes are planted around mid-August. During this period, a non-woven sunscreen curtain (not shown) is used to shade the sun during the day. Open the sun shade curtain for as long as possible in the morning and evening, and use the reflector 9 to irradiate the cultivated crop with light without waste (thus, it is convenient to make the reflector 9 roll up) ).

-Early harvest (September-November)-
From late September to around October, the daylight hours are long, the outside temperature drops, and even when the non-woven sunscreen curtains are open, there is no need to worry about sunburn or high temperature damage. Use reflector 9 throughout the day from early morning until sunset. This is the time when you want to get enough sunlight.
In addition, since the temperature of the cultivation room S begins to fall below a predetermined temperature (P ° C.) from mid-October, it is necessary to open and close the heat-insulating curtain 8 and use a heater.

-Harvest period (11-February of next year)-
It is the most difficult time to cultivate from the end of November to the end of January. I want to make full use of the function of the reflector 9 and irradiate the incident light for a long time without waste. In order to make the heat curtain 8 open as long as possible, not only the light in the morning but also the light in the afternoon is taken in, so pay attention to the weather, and the function of reflection (variable reflection angle function and length adjustment) This is a period of full use of the function and the reflector position movement function. In this way, the worst environment in the winter house (under the rain gutters and curtains in the west) will be reduced to reduce disease and increase yield.

-Late harvest (March-June)-
As the temperature rises, the sunshine hours begin to increase, so that a heater is not necessary, and the reflector 9 is effectively used by opening the heat-insulating curtain 8 from the time when the sun rises until the sunset. However, since the risk of high-temperature injury begins around the end of April, the reflector 9 is gradually used in the morning and evening, and it is time to refrain from using it in the daytime (the time when the roll-up reflector is used effectively) Becomes).

-Fallow period (July to August)-
During this period of about 1 month, the period is set as a curing period for measures such as continuous cropping, and the house 1 is filled with water and fallow.

As described above, the management of the house 1 requires precise management such as countermeasures against high and low temperatures throughout the year, uniformity of sunlight, ensuring sunshine hours, and the relationship between sunlight and the opening and closing time of the insulation curtain. Therefore, depending on the business scale, an illuminance meter and a thermometer, etc. are arranged at appropriate locations in the attic room Y and the cultivation room S, and in conjunction with these measuring instruments, the insulation curtain 8 is opened and closed, and the heater / Optimization of the process from the growing process of the cultivated plant to the harvesting period can be achieved with respect to the operation of the blower and the position, angle and length of the reflector 9.

A first embodiment for carrying out the present invention will be described in detail with reference to FIGS.
The specifications such as the installation position are as follows.
・ Location of House 1: 36 degrees 31 minutes north latitude, 139 degrees east longitude, north-south building type.
・ Cultivated crops: tomatoes.
・ Cultivation period, etc .: See Figure 3 for details.
・ B. House cultivation period: About 10 months from mid-August planting to mid-June of the following year.
・ Blow, fallow period: Frozen for about 1 month between July and August as a curing period for continuous cropping measures.
・ Utilization period of reflectors and reflectors: Reflectors should be used effectively except during fallow periods and times when there is a risk of high temperature damage. In particular, the period in which the reflector is most effectively used is three months from the end of November to the end of February.

This Example 1 is a so-called north-south building type house 1 in which the frontage M of the embodiment is arranged in the north-south direction, and sequentially from one building located on the east side to two buildings ... 6 buildings. It is configured.
In mid-January, when the sunlight is the weakest in the cultivation difficult period, the sunlight when opening the heat-insulating curtain 8 is incident from the southeast direction at an incident angle α = 20 ° and an elevation angle β = 20 ° (to the face of the frontage M). The incident light is incident at an incident angle α = 90 ° and an elevation angle β = 30 ° in the middle of the day before and after lunch, and at an incident angle α = 160 ° and an elevation angle β = 20 ° when the heat insulating curtain 8 is closed.

Hereinafter, the state in the mid-January of the difficult period when sunlight is the weakest will be described as an example.
As the sun rises, incident light (U) from the roof N, incident light (V) from the side wall O, and incident light (W) from the front entrance enter the house 1, but the roof incident light (U) is closed. It is blocked by the heat insulation curtain 8 and is incident on the attic Y without entering the cultivation room S.
However, the temperature of the attic room Y starts to rise rapidly when sunlight begins to hit the reflector 9 set at the north side fixed position (K point), and the temperature of the attic room Y is the heat retaining temperature of the predetermined cultivation room S. It approaches (P ° C). This time is the timing for opening the insulation curtain 8. This timing is advanced by a small hour compared to when there is no reflector 9.
Similarly, the time for closing the heat insulation curtain is delayed by as little as 1 hour (see FIG. 3).

Specifically, when the elevation angle of the sun exceeds 15 degrees and the incident angle reaches about 20 degrees (around 8:00 am), the temperature of the attic room Y becomes substantially the temperature in the greenhouse, and the conditions for opening the insulation curtain 8 are established.
The temperature of the attic Y at this time has a difference of 5 to 10 ° C. (measured value in the case of 8:00 am, outside air temperature −2 ° C.) depending on the presence or absence of the reflector 9.

The relationship between the received light amount of the house 1 and the received light amount of each building when the heat insulation curtain 8 is opened is shown below (see FIG. 5).
FIG. 5 shows a case in the middle of January, immediately after the heat insulation curtain 8 is opened, assuming an elevation angle of 20 ° and an incident angle of 20 °.
-Total light reception amount of house 1 (Z) = roof light reception amount (U) + side wall light reception amount (V) + frontage light reception amount (W)
.. U is the sum of the received light amounts U1 +,.
... The effective amount of light incident on one building out of U1 is the incident light of u1 that does not shade in one building and the reflector recovery light R1 that strikes the reflector 9 and is reflected inside. In addition, L8 is a loss due to the heat insulation curtain 8 on the incident light side of one building, and L1 is a zone that forms a shaded portion with incident light incident between the first heat insulation curtain 8 and the tangential direction of the roof. About the building boundary loss received light amount, about 80% is regenerated as the reflector recovery light R1 by the reflector 9 provided in this zone (this amount R1 is the same for all buildings).
... The amount of light incident on two effective buildings out of U2 is the incident light of u2 that does not shade in the two buildings and R2 that hits the reflector 9 and is reflected inside (the same amount as R1 and the same amount in all buildings) It is.
At this time, U2 <U1. The reason is because it is influenced by L1 of the front building.
... The incident light amounts of U3 to U6 are the same as U2.
..V is the sum of the received light amounts V1 +,.
... V1 is the amount of light received by only one building and does not exist after the second building.
・ ・ W is the same amount of light received from 1 to 6.
Therefore, the amount of light received at each building at this time is U1>U2> U3 = U4... = U6. This situation continues to ease as the sun rises, and the amount of light received is the same for all buildings in the south and middle.

During south-south, the same amount of light is received in all buildings, and then reverses toward the evening, so that U6>U5> U4 = U3... = U1.
This is because when the sun goes south and south (see FIG. 4B), the incident angle of the sun is 90 ° and the elevation angle is 30 °, and the following conditions are satisfied.
-The side wall received light amount V inherent to the first building is eliminated.
The boundary loss received light amount is only in the shaded part of the pair of heat insulation curtains 8 in the building.
At this time, the position of the reflector 9 is moved to the end point, which is the 160 ° tangent position on the east side, in preparation for capturing the reflected light in the afternoon.

After this time, the sun shines toward the evening and continues to descend to the west. Therefore, coupled with the movement of the reflector 9, the light reception conditions are reversed from those in the morning, and U6>U5> U4 = U3. U1.
When the heat insulation curtain 8 is closed, the incident angle of the sun is 160 ° and the elevation angle is 20 °.

As described above, the same amount of sunlight is applied to one to six buildings throughout the day, and the cultivated plants receive sunlight from both sides separately in the morning and afternoon.
Moreover, when it sees in each building unit in the meantime, effective incident light (u) and the reflected light of the reflector 9 will always be poured into the cultivated plant as sunlight from both sides.

Because of these, the cultivated plants planted in a row at the center depth of each building in the cultivation room S are always exposed to sunlight from both the left and right sides. Harvest can be obtained.
This is proved by obtaining extremely excellent results as compared with the case where the reflector 9 is not used.
In addition to the advantages of initial investment and running cost when compared with the single-building type, the so-called meticulous consideration of receiving sunlight in units of 4m wide buildings is superior in terms of quality and yield. It is clearly stated and proven.

Summarizing the results, the following effects can be obtained.
(1) Since the time for opening the heat insulation curtain 8 is shortened by 1 hour and the time for closing is extended by 1 hour, the amount of light received by the entire house 1 is increased, and the amount of light received in each building is made uniform.
(2) Regarding the fact that the cultivated crops planted in the north-south row are disadvantageous because the amount of light received decreases as they go to the north side of the row, which is considered disadvantageous in the north-south ridge. Except for around the hour, the direct sunlight from the roof is inserted from the southeast direction in the morning in each building unit, and the sunlight reflected by the reflector is inserted from the southwest direction, and the afternoon sunlight is inserted from the southwest direction. Since the reflected sunlight is inserted from the southeast direction, the cultivated crop is irradiated with sunlight from both the left and right sides, thereby eliminating the disadvantage.
(3) By the above, from the economic point of view, it is possible to secure the same amount of yield and quality as a single roof-type greenhouse house, reduce the incidence of disease, and drastically reduce initial investment and management.・ The maintenance cost is also excellent, so the profit / loss has improved significantly.

still. As a further utilization of the reflected light, it is better to attach a reflector to the north-side frontage M surface and the east-west side wall O surface. However, the reflector attached to the east side wall O surface is used in the afternoon instead of being used in the morning, and the reflector attached to the west side wall O surface is utilized in the morning and not used in the afternoon.

Next, a second embodiment for carrying out the present invention shown in FIG. 6 will be described. In the description, the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted.

The main difference from Example 1 is that
(1) The front entrance M of the building is facing east and west,
(2) The point that the reflection sheet 92 is a single-sided reflection sheet;
(3) The reflector 9 does not move in the morning and afternoon,
(The structure of the device is the same).

Even in the agricultural greenhouse greenhouse thus formed, the same effects as those of the first embodiment can be obtained except for the following points.
That is, from the south direction of the front entrance M (same as the reflector axis) facing east and west, the peak is south-central time, the morning increases, the afternoon decreases, and the elevation 9 changes from moment to moment. Use in the morning and afternoon at the same position (adjust the reflection angle and length as appropriate).
Therefore, the amount of light received in the first building located on the south side (solar side) is always large throughout the morning and afternoon, and the number of buildings received from the second building and the third building decreases sequentially.
Therefore, although it is inferior to Example 1 in the point of equalizing the amount of light received in each building, it is not necessary to change the position of the reflector in the morning and afternoon, and this effort is not required.

still. As a further utilization of the reflected light, it is better to attach a reflector to the north side wall O surface and the east-west frontage M surface. However, the reflector attached to the east side entrance M surface is utilized in the afternoon without being used in the morning, and the reflector attached to the west side entrance M surface is utilized in the morning and not used in the afternoon.

The usability of the north-south building and the east-west building has been described above, but it is possible to change the direction of the building in consideration of the surrounding environment, land shape, latitude and longitude.
The important point in this case is that the attachment position of the reflector 9, the length, the reflection angle, etc. may be set so that the optimum conditions are obtained about 1 to 2 months before and after the coldest air.
The effects and the like in this case are obtained as intermediate values between the first embodiment and the second embodiment.

The present invention is used in industries that manufacture and use agricultural greenhouses.

N, roof M, frontage O, side wall
Y, Attic S, Cultivation room m, Near part (of thermal insulation curtain) 1, Arched roof type greenhouse (house)
2, support column (of steel framework structure) 3, cross beam (of steel framework structure) 4, 40, 41, arch roof skeleton 5, sidewall skeleton 6, rain gutter 7, curtain rail 8, thermal insulation curtain 9 91, 92, 93, reflector K, predetermined position (of the reflector).
10, wire or string

Claims (5)

Each of the ridges is separated by a thermal curtain that opens and closes the attic room and the cultivation room of each ridge, and a rain gutter and a lower part of the gutter are connected to the valley where the roof and the roof of the adjacent wing are connected. In the greenhouse greenhouse with a heat curtain curtain,
The reflector is arranged in the roof ridge direction at a predetermined position of the attic of each ridge, and includes a reflector that reflects sunlight received from the roof toward the cultivation room, and the reflector sheet of the reflector Agricultural greenhouse greenhouse characterized by the surface being formed by aluminum deposition.   The predetermined position of the reflector is a moving point that can move in the horizontal direction between the frontage, and the means for moving is a wire or string with both ends of the reflector rail or the vicinity thereof as fulcrums. The agricultural greenhouse greenhouse according to claim 1, wherein one end of the wire or string is actuated by tension by arranging a wire.   In the agricultural greenhouse greenhouse house installed in the north-south direction, the reflector is a reflector that reflects on both sides, and is arranged on the west side of the building in the morning and moved in the afternoon The greenhouse for greenhouses according to claim 1, wherein the greenhouse is arranged on the east side of the ridge.   In the case where the greenhouse greenhouse building is installed in the east-west direction, the reflector is a reflector that reflects on one side, and is arranged on the north side of the building throughout the day. The agricultural greenhouse greenhouse according to any one of claims 1 and 2. The agricultural greenhouse greenhouse according to any one of claims 1 to 4, wherein the reflector has a variable angle and length.

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