Shading equipment that can withstand heavy winds, snowstorms, and rainstorms

Abstract

To provide a shading sheet used as a sunshade for cultivated crops, which has a structure that is not subjected to wind pressure by increasing air permeability while having shading properties, and solves the problem that the shading sheet is easily blown away or torn because it is directly exposed to the wind when the shading sheet is stretched outdoors.SOLUTION: The present invention provides equipment that can block light by fixing both ends of tension wires arranged linearly in parallel at regular intervals between opposing skeletal beams to form a linear composite of tension wires, within a space formed by skeletal beams. In this equipment, the spacing between the tension wires is set wide, so there is little air resistance and air can pass through easily, eliminating the need to worry about being blown around by the wind. In addition, because both ends of all tension wires are fixed to the skeletal beams, resistance to strong winds can be expected. As a result, the equipment has light-blocking properties while also maintaining high breathability and is less susceptible to damage from wind pressure.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a light-shielding facility that is highly resistant to strong winds, snow, and rain without inhibiting air permeability and moisture permeability in the fields of agriculture, horticulture, livestock, housing, construction, etc.

Background Art

[0002] Conventionally, in crop cultivation, in summer, direct sunlight is strong and crops are prone to heat damage. In such cases, a covering is placed over the crops. In recent years, a shade cultivation method that adjusts the time of sunlight exposure to promote crop growth has been adopted, and in such cases as well, a light-shielding sheet is used.

[0003] As a sheet used for covering crops, it is required to have a wide range of light-shielding properties from a light-shielding rate close to 100% to various light-shielding ratios, as well as air permeability, moisture permeability, and hydrophobicity.

[0004] For such applications, a coarse-mesh net-like material such as gauze or a knitted fabric made of monofilament or flat yarn is often used (Patent Document 1).

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] However, in such a light-shielding sheet, when a high degree of light-shielding property is required, it is necessary to reduce the mesh of the net-like material. For this reason, there is a problem that the air flow is suppressed and the ventilation property is sacrificed.

[0006] In addition, when the light-shielding sheet is installed outdoors, there is a problem that the light-shielding sheet is directly affected by the wind and is easily blown by strong winds, and is easily blown away or torn. For this reason, it is important for the light-shielding sheet used as a covering for cultivated crops to have a high ventilation property as well as a light-shielding property and to have a structure that does not receive wind pressure.

[0007] For this reason, plain woven fabric is often used as a light-shielding sheet, but there is a problem in that the air permeability is low and it is easily swayed greatly under wind pressure.

[0008] Therefore, the present invention provides a light-shielding device for crop cultivation that can block light without inhibiting air permeability and has high strength against wind pressure.

Means for Solving the Problems

[0009] The present invention has been made as a result of intensive studies to solve such problems. In a space formed by a skeletal beam, both ends of tension wires linearly arranged in parallel at regular intervals are fixed between opposing skeletal beams, thereby forming a linear composite of the tension wires, and providing a facility capable of blocking light in the space.

[0010] Further, the above light-shielding facility in which the linear composite of the tension wires is installed on any one surface or a plurality of surfaces of the surface of the space formed by the skeletal beam, and further, the linear composite of the tension wires is arranged not only on the surface but also inside the space formed by the skeletal beam, and the linear composite of the tension wires is installed so as to form a plurality of layers.

Effects of the Invention

[0011] The light-shielding facility according to the present invention forms a linear composite of tension wires by fixing both ends of the tension wires linearly arranged in parallel at regular intervals to opposing skeletal beams. The light-shielding effect is produced by reducing the area through which sunlight passes due to this linear composite. Furthermore, it is possible to adjust the degree of light shielding by changing the interval width of the linear composite.

[0012] In addition, by using linear or strip-shaped tension wires, sunlight is reflected and dispersed, so that the irradiation of sunlight on crops can be softened. At the same time, since the spaces between the tension wires are set wide, the air resistance is small and the air can easily pass through, so there is no worry of being fanned by the wind. Also, since both ends of all the tension wires are fixed to the skeletal beams, resistance to strong winds can be expected. Therefore, it has light-shielding properties and at the same time can maintain high air permeability, and there is little damage caused by wind pressure. This linear composite can produce a shielding effect not only against sunlight but also against rain and snow. By changing the interval width of the linear composite, it is possible to adjust the amount of rain and snow entering the space to an optimal amount for the crops.

Best Mode for Carrying Out the Invention

[0013] Figure 1 is a perspective view of a light-shielding facility having resistance to strong winds, rain, and snow. In a place where crops are grown, such as above the cultivated ground 13 for growing crops 14 or above the water tank 12 where the moss floating body 11 is installed, a space formed by the upper horizontal skeletal beam 1, the front upper skeletal beam 1', the front support 3, the rear support 2, the rear lower skeletal beam 5, and the lower horizontal skeletal beam 6 is formed. In the upper plane of the space formed by the upper horizontal skeletal beam 1 and the front upper skeletal beam 1' in this space, the upper horizontal tension wires 7 are arranged at regular intervals parallel to the front upper skeletal beam 1', and both ends of the upper horizontal tension wires 7 are fixed to the upper horizontal skeletal beam 1, thereby forming a linear composite of light-shielding tension wires. Note that the formation of the linear composite of light-shielding tension wires is not limited to only the upper plane portion of the crop growth space, and it is also possible on the side surface portion.

[0014] Furthermore, the lower horizontal tension wires 8 are arranged at regular intervals parallel to the middle front skeletal beam 4 installed below the front upper skeletal beam 1', and both ends of the lower horizontal tension wires 8 are fixed to the middle interrupted skeletal beam 4', so that in the crop growth space, it is possible to form a plurality of layers of linear composites of light-shielding tension wires. Note that a plurality of layers may be formed by parallel linear composites, or a plurality of layers may be formed by perpendicular linear composites.

[0015] Also, on the side surface of the space surrounded by the front support column 3, the rear support column 2, the upper horizontal skeletal beam 1, and the lower horizontal skeletal beam 6, the side horizontal lines 9 are arranged at regular intervals parallel to the upper horizontal skeletal beam 1, and both ends of the side horizontal lines 9 are fixed to the front support column 3 and the rear support column 2, so that it is also possible to form a linear composite body of tension wires having light-shielding properties. Further, on the same side surface of the space, the side vertical lines 10 are arranged at regular intervals parallel to the front support column 3 and the rear support column 2, and both ends of the side vertical lines 10 are fixed to the upper horizontal skeletal beam 1 and the lower horizontal skeletal beam 6, so that it is also possible to form a linear composite body of tension wires having light-shielding properties in which the side horizontal lines 9 and the side vertical lines 10 are perpendicular to each other. Depending on the optimal growth environment required for the crop, a linear composite body of tension wires or a perpendicular linear composite body can be selected. Note that the formation of the perpendicular linear composite body of tension wires having light-shielding properties is not limited to only the side portion of the crop growth space, but is also possible on the upper planar portion.

[0016] Figure 2 is a perspective view of the linear composite body. The ends of the tension wires 17 are individually fixed at the wire retaining portions 16 or are collectively fixed by the wire retaining band 15. The tension wires 17 may be fixed one by one, or a single long tension wire may be continuously wound back and forth. The material of the tension wires 17 may be polyethylene, rubber, or thread, the material is not limited, and the bird net may be made into a strip shape. The color of the material of the tension wires 17 may be white, black, or transparent, and is not limited.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Claims

1. In a space formed by skeletal beams, a light-shielding facility that enables light shielding within the space by forming a linear complex of tension wires, where both ends of the tension wires arranged linearly in parallel at regular intervals are fixed between opposing skeletal beams.

2. The light-shielding facility according to Claim 1, wherein the linear complex of tension wires is installed on any one or more surfaces of the space formed by the skeletal beams.

3. The light-shielding facility according to Claim 2, wherein the linear complex of tension wires is arranged not only on the surface but also inside the space formed by the skeletal beams, and is installed such that the linear complex of tension wires forms multiple layers.

4. In a space formed by skeletal beams, a light-shielding facility that enables light shielding within the space by forming a linear complex of tension wires, where both ends of the tension wires arranged linearly in parallel at regular intervals are fixed between opposing skeletal beams, and further forming a linear complex of tension wires so as to intersect the first linear complex of tension wires on the same plane.

5. The light-shielding facility according to Claim 4, wherein the linear complex of tension wires formed by the intersection of multiple tension wires is installed on any one or more surfaces of the space formed by the skeletal beams.

6. The light-shielding facility according to Claim 5, wherein the linear complex of tension wires formed by the intersection of multiple tension wires is arranged not only on the surface but also inside the space formed by the skeletal beams, and is installed such that the linear complex of tension wires forms multiple layers.

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