JP5963042B2 - Agricultural solar control film - Google Patents

Description

  The present invention relates to an agricultural solar control film, and more particularly to an agricultural solar control film that adjusts the amount of sunlight incident on a house.

  In the agricultural solar control film installed in a house, as a method for adjusting the amount of incident light in the house, a film provided with irregularities on the film is known (for example, see Patent Document 1). When the conventional film described in Patent Document 1 is provided with a concave shape extending in one direction on the film, the amount of light is reduced when the summer altitude is high, and the winter sun altitude is low. Increasing the amount of light.

  However, the conventional film only changes the amount of light according to the altitude change of the sun between summer and winter, and it is not possible to adjust the amount of light such as how much light is increased or how much light is reduced, A suitable amount of sunlight could not be guided to the house.

Japanese Patent No. 2910291

  This invention is made | formed in view of such a point, and it aims at providing the sunlight control film for agriculture which can guide | inject sunlight of suitable light quantity in a house.

  An agricultural solar control film according to an aspect of the present invention includes a film base material having an incident surface and an output surface, and a plurality of convex portions are provided on the output surface of the film base material, and at least one convex portion. A pear ground is formed on a part of the surface, and the pear ground diffuses and emits light entering the incident surface.

  The agricultural solar control film according to one aspect of the present invention is characterized in that each convex portion is composed of a unit prism made of a polyhedron.

  The agricultural solar control film according to one aspect of the present invention is characterized in that each unit prism is composed of a square-cone unit prism.

  Each convex part is formed of a polygonal columnar elongated prism.

  The agricultural solar control film according to an aspect of the present invention is characterized in that the elongated prism has a triangular prism shape.

  An agricultural solar control film according to an aspect of the present invention includes a film base material having an incident surface and an output surface, and a plurality of convex portions are provided on the output surface of the film base material. A pear ground is formed on a part of the pear ground, and the pear ground diffuses light incident on the incident surface.

  The agricultural solar control film according to one aspect of the present invention is characterized in that each convex portion is composed of a unit prism made of a polyhedron.

  The agricultural solar control film according to one aspect of the present invention is characterized in that each unit prism is formed of a square-cone unit prism.

  The agricultural solar control film according to an aspect of the present invention is characterized in that each convex portion is formed of a polygonal columnar elongated prism.

  The agricultural solar control film according to an aspect of the present invention is characterized in that the elongated prism has a triangular prism shape.

  An agricultural solar control film according to an aspect of the present invention includes a film base material having an incident surface and an output surface, and is provided with a plurality of convex portions on the output surface of the film base material. On the side, a reinforcing plate having a pear ground is provided, and the pear ground diffuses light emitted from the emission surface.

  The agricultural solar control film according to one aspect of the present invention is characterized in that each convex portion is composed of a truncated quadrangular unit prism, and the reinforcing plate is fixed to the top surface of the unit prism. It is.

  In the agricultural solar control film according to one aspect of the present invention, each convex portion is composed of a triangular prismatic elongated prism having a flat top surface, and the reinforcing plate is fixed to the top surface of the elongated prism. It is characterized by.

  According to the present invention, a suitable amount of sunlight can be guided into the house.

Fig.1 (a)-(d) is a figure which shows the solar control film for agriculture by the 1st Embodiment of this invention. Fig.2 (a) (b) is a figure which shows the house in which the sunlight control film for agriculture is installed. FIG. 3 is a diagram showing an agricultural solar control film installed in a house. FIGS. 4A to 4D are views showing the action of the agricultural solar control film. Fig.5 (a) (b) is a figure which shows the effect | action of the sunlight control film for agriculture. 6 (a) and 6 (b) are diagrams illustrating the action of an agricultural solar control film. FIG. 7 is a diagram showing changes in the way of the sun depending on the season. FIGS. 8A to 8D are views showing a modification of the first embodiment. FIGS. 9A to 9D are views showing a modification of the first embodiment. FIGS. 10A to 10C are views showing a modification of the first embodiment. FIGS. 11A to 11D are views showing a modification of the first embodiment. 12A to 12D are views showing a modification of the first embodiment. FIGS. 13A to 13C are views showing an agricultural solar control film according to a second embodiment of the present invention. FIGS. 14A to 14C are diagrams showing a modification of the second embodiment. FIGS. 15A to 15C are diagrams showing a modification of the second embodiment. FIGS. 16A and 16B are views showing a modification of the second embodiment. FIGS. 17A to 17C are views showing a modification of the second embodiment. FIGS. 18A to 18C are views showing a modification of the second embodiment.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  (First Embodiment) FIGS. 1 to 7 are views showing a first embodiment of an agricultural solar control film according to the present invention.

  First, the house 20 in which the agricultural solar control film 10 is installed will be described with reference to FIGS.

  In the house 20, plants 21 having a height of about 2 m are planted at intervals of 1 m. The house 20 has a side wall 23 having a height of 3.5 m. The agricultural solar control film 10 is installed on the upper side of the side wall 23, and the agricultural solar control film 10 constitutes the top of the house 20.

  The total height of the house 20 is 5.5 m, and the agricultural solar control film 10 is arranged with an inclination angle of about 23 ° with respect to the horizontal plane. The total length of the house 20 is 8 m.

  As shown in FIG. 2 (a), the sunlight L enters the house 20 at a maximum inclination angle of about 32 ° with respect to the horizontal plane in the winter, and the sunlight in the summer as shown in FIG. 2 (b). L enters the house 20 with an inclination angle of about 78 ° at the maximum.

  Thus, the altitude of sunlight changes along the north-south direction between summer and winter.

  In addition, the altitude of sunlight changes along the east-west direction even during the day (see FIG. 7).

  As will be described later, the solar control film according to the present embodiment allows sunlight to efficiently enter the house 20 from the sun in consideration of the fact that the altitude of the sun changes between summer and winter and also changes during the day. Can guide you.

  Next, the agricultural solar control film according to the present embodiment will be further described.

  As shown in FIGS. 1A, 1B, 1C, and 1D, the agricultural solar control film 10 includes a film base 11 having an incident surface 11a and an output surface 11b. Convex portions comprising a large number of unit prisms 12 are provided on the emission surface 11b. In addition, a pear ground 11c having minute irregularities is formed on a part of the emission surface 11b. In FIG.1 (b), the pear ground 11c is shown with the broken line.

  Each unit prism 12 has a polyhedron, for example, a rectangular cone shape, and is arranged in a grid pattern on the light exit surface 11 b of the film base 11.

  Here, FIG. 1 (a) is a back view showing the agricultural solar control film 10, FIG. 1 (b) is a cross-sectional view in the X-ray direction of FIG. 1 (a), and FIG. 1 (c) is a unit prism. 12 is a cross-sectional view in the Y line direction of FIG. 1 (d).

  Since each unit prism 12 has a square cone shape, each unit prism 12 refracts the unidirectional sunlight component entering the incident surface 11a of the film base 11 and emits it from the output surface 11b. The component of sunlight in the other direction orthogonal to one direction entering 11a can be refracted and emitted from the emission surface 11b. Also, one of the side surfaces of the square-cone unit prism 12 is a pear ground 11c. Thereby, the component of sunlight can be diffused and emitted from the pear ground 11c. For example, as shown in FIG. 1B, the short surface area of the unit prism 12 is a satin surface 11c.

  One direction entering the incident surface 11a of the film substrate 11 is the north-south direction in which the solar altitude changes between summer and winter, and the other direction is the east-west direction in which the solar altitude changes during the day. The unit prism 12 refracts the sunlight whose altitude changes between summer and winter and guides it into the house 20, and refracts the sunlight whose altitude changes during the day and guides it into the house 20. Can do. Moreover, sunlight can be diffused in the house 20 by the pear ground 11c.

  Next, the material of the film base 11 of the agricultural solar control film 10 will be described.

  The film substrate 11 is not particularly limited as long as it has translucency. For example, the film substrate 11 is selected from films made of plastic materials such as polyvinyl chloride, polyolefin, vinyl acetate, and polyethylene, fluororesin films, and glass plates. can do.

  Among these, it is desirable to use a polyolefin film from the viewpoint of heat retention, or a fluororesin film from the viewpoint of durability.

  As a manufacturing method of the film base material 11, if it is a plastic material, it can be directly subjected to shaping such as embossing at the time of heating and melting such as extrusion and inflation, or after UV coating resin is separately applied on the surface after the film production, It may be cured.

  Although there is no restriction | limiting in particular in the thickness of the film base material 11, For example, it is preferable to set it as the range of 75 micrometers-150 micrometers. By setting the thickness of the film substrate 11 within the above range, it is possible to maintain a certain strength while suppressing the weight and raw material cost.

  Next, the manufacturing method of the pear ground 11c is demonstrated.

  For example, when manufacturing a film base 11 by embossing or the like during extrusion and inflation of a plastic material such as extrusion, the embossing for forming the unit prism 12 and the pear ground for forming the pear ground 11c are formed. The pear ground 11c can be obtained by simultaneously processing the emboss.

  Further, the matte surface 11c can be formed by molding or processing a synthetic resin kneaded with an inorganic filler, or by mixing and molding a synthetic resin with a crosslinking agent. Moreover, the pear ground 11c can also be formed by vapor-depositing inorganic fine substances, such as a silica, in the predetermined area | region of the surface of the film base material 11. FIG.

  By such a method, for example, the pear ground 11c having a haze value of 20% to 40% as measured by the Murakami Color Research Laboratory Haze Meter HM-150 (conforming to JIS K7136) is formed.

  Next, the operation of the present embodiment having such a configuration will be described.

  The sun changes in the east-west direction during the day.

  As shown in FIGS. 3 and 4 (a) (b) (c) (d), sunlight L enters the agricultural solar control film 10 installed in the house 20. FIG. At this time, the sun is low in the morning and evening, and the sun is high in the daytime.

  According to the present embodiment, the agricultural solar control film 10 is composed of the film base material 11, and regular square-cone-shaped multi-unit prisms 12 are arranged in a grid pattern on the emission surface 11 b of the film base material 11. Therefore, the unit prism 12 can refract the sunlight L and efficiently guide it into the house 20.

  3 is a schematic perspective view showing the house 20, FIGS. 4 (a) and 4 (b) are views of the inside of the house 20 from different directions, and FIG. 4 (c) is a solar control film for agriculture in the morning. FIG. 4D is a diagram showing sunlight L passing through the unit prisms 12 of the agricultural solar control film 10 in the evening.

  As shown in FIGS. 3 and 4 (a) (b) (c) (d), the sun is at a low position in the morning and evening. At this time, the sunlight L incident obliquely on the agricultural solar control film 10 from a low position passes through each unit prism 12 and is refracted in the vertical direction and emitted into the house 20 (FIG. 4A). (C) (d)).

  In this way, the sunlight L is refracted in the vertical direction by each unit prism 12 and then emitted into the house 20. For this reason, sunlight L can fully reach between the plants 21, and can effectively guide light to almost the entire plant 21 in the house 20.

  In the daytime, the sun is relatively high. At this time, the sunlight L incident on the agricultural sunlight control film 10 from a high position is refracted in the vertical direction by the unit prism 12 and is emitted into the house 20 (FIG. 4D).

  For this reason, in the daytime, the sunlight L emitted into the house 20 reaches the lower part of the plant 21 sufficiently.

  As shown in FIGS. 4C and 4D, since the altitude of the sun changes symmetrically in the morning and evening, the sectional shape of the unit prism 12 along the east-west direction is the height direction with respect to the lateral length 10. It is an isosceles triangle with a length of 5, and is a symmetrical shape.

  On the other hand, the height of the sun changes in the north-south direction between winter and summer.

  As shown in FIGS. 5A and 5B and FIGS. 6A and 6B, sunlight L is incident on the agricultural solar control film 10 installed in the house 20. At this time, the altitude of the sun is low in winter and the altitude of the sun is high in summer.

  According to the present embodiment, the agricultural solar control film 10 is composed of the film base material 11, and regular square-cone-shaped multi-unit prisms 12 are arranged in a grid pattern on the emission surface 11 b of the film base material 11. Therefore, the unit prism 12 can refract the sunlight L and efficiently guide it into the house 20.

  Here, FIG. 5A is a diagram showing sunlight L passing through the agricultural solar control film 10 in winter, and FIG. 5B is an enlarged view of the unit prism at that time. FIG. 6A is a diagram showing sunlight L passing through the agricultural solar control film 10 in the summer, and FIG. 6B is an enlarged view of the unit prism at that time.

  As shown in FIGS. 5 (a) and 5 (b), the sun is in a low position in winter. At this time, sunlight L incident obliquely on the agricultural sunlight control film 10 from a low position passes through each unit prism 12 (long surface thereof) and is refracted in the vertical direction and emitted into the house 20. (FIGS. 5A and 5B).

  In this way, the sunlight L is refracted in the vertical direction by each unit prism 12 and then emitted into the house 20. For this reason, sunlight L can reach | attain between plants 21 enough, and can guide light to the substantially whole plant 21 in the house 20 effectively.

  In the summer, the sun is relatively high. At this time, the sunlight L incident on the agricultural sunlight control film 10 from a high position is refracted in the vertical direction by the unit prism 12 and emitted into the house 20 (FIGS. 6A and 6B). )). Further, a short surface 11 c is provided on the short surface of the unit prism 12, and the sunlight L diffuses into the house 20. When the satin surface 11 c is not provided on the short surface of the unit prism 12, sunlight refracted by the short surface is emitted outside the house 20, and the amount of light in the house 20 decreases. However, in the present embodiment, a satin surface 11c is provided on the short surface of the unit prism 12 to reduce the light refraction function on the short surface and diffuse the light, thereby suppressing a decrease in the amount of light in the house 20. Can do.

  For this reason, in the summer, the sunlight L emitted into the house 20 reaches the lower part of the plant 21 sufficiently.

  As shown in FIGS. 5A and 5B and FIGS. 6A and 6B, since the altitude of the sun changes asymmetrically in summer and winter, the cross-sectional shape of the unit prism 12 along the north-south direction is The length in the height direction is 5 with respect to the length 10 in the horizontal direction, and the length in the horizontal direction is divided into 8: 2 by the perpendicular line dropped from the apex, which is asymmetrical to the left and right. When the sunlight control film 10 is arranged at an inclination angle of 23 ° with respect to the horizontal plane, the angle of the acute angle portion 12A of the unit prism 12 is set to 23 °, so that the long side (long surface) of the unit prism 12 and the ground Is about 45 °. Therefore, when it is desired to bend the sunlight by 45 °, the refraction of the light passing through the unit prism 12 is not concerned, and the design becomes easy.

  (Modification of First Embodiment) Next, a modification of the first embodiment will be described with reference to FIGS.

  In the first embodiment, the pear ground 11c is formed on the short surface of each unit prism 12, but as shown in FIGS. 8A, 8B, 8C, and 8D, the pear ground is formed on the short surface. The unit prisms 12 on which 11c are formed may be arranged at regular intervals. FIGS. 8A, 8B, 8C, and 8D show an example in which every other unit prism 12 in which the pear surface 11c is formed on the short surface is arranged.

  Here, FIG. 8A is a plan view showing the agricultural solar control film 10, FIG. 8B is a sectional view in the X-ray direction of FIG. 8A, and FIG. FIG. 8D is a perspective view showing the unit prism 12 on which 11c is formed, and FIG. 8D is a cross-sectional view in the Y direction of FIG.

  Even if the unit prisms 12 having the pear surface 11c formed on the short surface are arranged at regular intervals, the effect of reducing the refractive function of light on the short surface and the effect of suppressing the decrease in the amount of light in the house 20 by diffusing the light are obtained. It is done.

  Next, another modification of the first embodiment will be described with reference to FIGS. 9A, 9B, 9C, and 9D. In the first embodiment, the matte surface 11c is formed on the short surface of each unit prism 12. However, as shown in FIGS. 9 (a), (b), (c), and (d), The pear ground 11c may be formed on the top and bottom (valley). In other words, the long surface and the short surface of each unit prism 12 are formed with a pear ground 11c at the front end portion and the bottom portion facing the front end portion.

  9A is a plan view showing the agricultural solar control film 10, FIG. 9B is a sectional view in the X-ray direction of FIG. 9A, and FIG. 9C is a unit prism. 12 is a perspective view showing FIG. 12, and FIG. 9 (d) is a cross-sectional view in the Y-line direction of FIG. 9 (a).

  The top and bottom of the unit prism 12 may be rounded during processing. In the rounded portion, the light is refracted in an unintended direction, and the amount of light in the house 20 is reduced. By forming the pear ground 11c on the top and bottom of the unit prism 12, even if the top and bottom are rounded, the light diffuses, preventing the light from being refracted in an unintended direction, It can suppress that the light quantity in the house 20 reduces.

  Next, another modification of the first embodiment will be described with reference to FIGS. 10 (a), 10 (b), and 10 (c). In the first embodiment, the matte surface 11c is formed on the side surface (short surface) of each unit prism 12. However, as shown in FIGS. A pear ground 11c may be formed on a part of the surface 11a. In the area where the pear ground 11c is formed, the incident light becomes diffused light, and the amount of emitted light decreases.

  10A is a plan view showing the agricultural solar control film 10, FIG. 10B is a cross-sectional view in the X-ray direction of FIG. 10A, and FIG. 10C is FIG. It is Y line direction sectional drawing of (a).

  In the house 20, crops having different patterns (for example, crops having a high light saturation point and crops having a low light saturation point) may be grown at the same time. In this case, in the house 20, an area where the amount of light to be guided is desired to be increased and an area where the desired amount of light is desired to be reduced coexist. The agricultural solar control film 10 shown in FIGS. 10 (a), 10 (b), and 10 (c) can adjust the amount of light for each region in the house 20, and the matte surface 11c on the incident surface 11a wants to reduce the amount of light. It is formed at a location corresponding to the region. Thus, by forming the pear ground 11c on the incident surface 11a, the amount of light guided into the house 20 can be adjusted for each region, and sunlight with a suitable amount of light according to the pattern can be guided.

  Next, another modification of the first embodiment will be described with reference to FIGS. 11 (a), 11 (b), 11 (c), and 11 (d). In the first embodiment, the matte surface 11c is formed on the short surface of the unit prism 12. However, as shown in FIGS. 11 (a), (b), (c), and (d), the exit surface of the film substrate 11 is used. A reinforcing plate 15 may be provided on the 11b side. The reinforcing plate 15 has a satin surface and diffuses light. The same material as the base material 11 can be used for the reinforcing plate 15.

  11A is a plan view showing the agricultural solar control film 10, FIG. 11B is a cross-sectional view in the X-ray direction of FIG. 11A, and FIG. 11C is a unit prism. 12 (d) is a cross-sectional view in the Y line direction of FIG. 11 (a).

  Each unit prism 12 has a truncated square conical shape and has a top surface 12a. The reinforcing plate 15 is fixed to the top surface 12a. For this reason, the rigidity as the agricultural solar control film 10 as a whole can be provided.

  The reinforcing plate 15 is preferably provided at a location corresponding to a region where it is desired to reduce the amount of light guided in the house 20. By providing the reinforcing plate 15 having such a textured surface, the amount of light guided into the house 20 can be adjusted for each region. This is particularly useful when simultaneously growing crops with different patterns (for example, crops with a high light saturation point and crops with a low light saturation point) in the house 20.

  Next, another modification of the first embodiment will be described with reference to FIGS. 12 (a), (b), (c), and (d). In the first embodiment, the matte surface 11c is formed on the short surface of each unit prism 12. However, as shown in FIGS. 12 (a), (b), (c), and (d), the unit prism 12 in a predetermined region. It is also possible to form the pear ground 11c on the long and short sides of the slab and not form the pear ground 11c on the unit prisms 12 in areas other than the predetermined area.

  Here, FIG. 12 (a) is a plan view showing the agricultural solar control film 10, FIG. 12 (b) is a sectional view in the X-ray direction of FIG. 12 (a), and FIG. FIG. 12D is a perspective view showing the unit prism 12 in which 11c is formed, and FIG. 12D is a cross-sectional view in the Y line direction of FIG.

  It is preferable to form the pear ground 11c on the long and short surfaces of the unit prism 12 corresponding to the region where the amount of guided light in the house 20 is to be reduced. Thus, by providing the unit prism 12 with the pear ground 11c formed and the unit prism 12 without the pear ground 11c formed, the amount of light guided into the house 20 can be adjusted for each region. This is particularly useful when simultaneously growing crops with different patterns (for example, crops with a high light saturation point and crops with a low light saturation point) in the house 20.

  (Second Embodiment) Next, an agricultural solar control film according to a second embodiment will be described with reference to FIGS. 13 (a), 13 (b) and 13 (c). In the second embodiment shown in FIGS. 13A, 13B, and 13C, the same parts as those in the first embodiment shown in FIG.

  As shown in FIGS. 13A, 13B, and 13C, the agricultural solar control film 10 includes a film base 11 having an incident surface 11a and an output surface 11b, and the output surface 11b of the film base 11 is used. Further, a convex portion composed of a large number of elongated prisms 32 is provided. The elongated prism 32 has a polygonal column shape, for example, a triangular column shape, and extends in one direction. Further, a pear ground 11c having minute irregularities is formed on a part of the emission surface 11b, specifically, on the short surface of the elongated prism 32 having a triangular prism shape.

  Here, FIG. 13 (a) is a back view showing the agricultural solar control film 10, FIG. 13 (b) is a cross-sectional view in the X-ray direction of FIG. 13 (a), and FIG. 13 (c) is an elongated shape. It is a figure which shows the prism 32. FIG.

  For example, in the film substrate 11, the apex angle of the elongated prism 32 is 90 °, and the inclination angle of the long side of the elongated prism 32 is 23 °. Further, the height from the incident surface 11a to the valley portion of the elongated prism 32 in the film base 11 is 100 μm, and the arrangement pitch of the elongated prisms 32 is 200 μm.

  As shown in FIGS. 13A, 13B, and 13C, when the elongated prism 32 is provided on the exit surface 11b of the film substrate 11, the molding is performed as compared with the case where the unit prism 12 is provided on the film substrate 11. It becomes easy.

  As described in the first embodiment, sunlight refracted by the short surface of the prism is emitted out of the house 20 and the amount of light in the house 20 is reduced. In the present embodiment, the surface of the elongated prism 32 is provided with a satin surface 11c, the light refraction function on the short surface is reduced, and the light is diffused, thereby suppressing the decrease in the amount of light in the house 20. .

  (Modification of Second Embodiment) Next, a modification of the second embodiment will be described with reference to FIGS.

  In the second embodiment, the pear ground 11c is formed on the short surface of the elongated prism 32. However, as shown in FIGS. 14 (a), (b), and (c), the pear ground 11c is formed on the short surface. The elongated prisms 32 may be arranged at regular intervals. FIGS. 14A, 14B, and 14C show an example in which every other elongate prism 32 having a pear ground 11c formed on the short surface is disposed every other.

  Here, FIG. 14 (a) is a plan view showing the agricultural solar control film 10, FIG. 14 (b) is a sectional view in the X-ray direction of FIG. 14 (a), and FIG. It is a perspective view which shows the elongate prism 32 in which 11c is formed.

  Even when the elongated prisms 32 having the pear surface 11c formed on the short surface are arranged at regular intervals, the light refraction function on the short surface can be reduced, and the light quantity in the house 20 can be reduced by diffusing the light. can get.

  Next, another modification of the second embodiment will be described with reference to FIGS. 15 (a), 15 (b), and 15 (c). In the second embodiment, the matte surface 11c is formed on the short surface of the elongated prism 32. However, as shown in FIGS. A pear ground 11c may be formed in the (valley). In other words, the long surface and the short surface of the elongated prism 32 are formed with the pear ground 11c on the front end portion and the bottom portion facing the front end portion.

  Here, FIG. 15A is a plan view showing the agricultural solar control film 10, FIG. 15B is a cross-sectional view in the X-ray direction of FIG. 15A, and FIG. 15C is an elongated shape. 3 is a perspective view showing a prism 32. FIG.

  The top and bottom of the elongated prism 32 may be rounded during processing. In the rounded portion, the light is refracted in an unintended direction, and the amount of light in the house 20 is reduced. By forming the pear ground 11c on the top and bottom of the elongated prism 32, even if the top and bottom are rounded, the light diffuses and prevents light from being refracted in an unintended direction. The light quantity in the house 20 can be suppressed from decreasing.

  Next, another modification of the second embodiment will be described with reference to FIGS. In the second embodiment, the textured surface 11c is formed on the side surface (short surface) of the elongated prism 32. However, as shown in FIGS. 16 (a) and 16 (b), the incident surface 11a of the base material 11 is formed. A pear ground 11c may be formed in part. In the area where the pear ground 11c is formed, the incident light becomes diffused light, and the amount of emitted light decreases.

  Here, FIG. 16A is a plan view showing the agricultural solar control film 10, and FIG. 16B is a cross-sectional view in the X-ray direction of FIG.

  In the house 20, crops having different patterns (for example, crops having a high light saturation point and crops having a low light saturation point) may be grown at the same time. In this case, in the house 20, an area where the amount of light to be guided is desired to be increased and an area where the desired amount of light is desired to be reduced coexist. The agricultural solar control film 10 shown in FIGS. 16 (a) and 16 (b) is suitable for adjusting the amount of light for each region in the house 20, and the matte surface 11c on the incident surface 11a reduces the amount of light that is guided. It is formed at a location corresponding to the desired region. In this way, by forming the matte ground surface 11c on the incident surface 11a, the amount of light guided into the house 20 can be adjusted for each region.

  Next, another modification of the second embodiment will be described with reference to FIGS. 17 (a), 17 (b), and 17 (c). In the second embodiment, the matte surface 11c is formed on the short surface of the elongated prism 32. However, as shown in FIGS. 17A, 17B, and 17C, the exit surface 11b side of the film base 11 is used. A reinforcing plate 35 may be provided. The reinforcing plate 35 has a matte surface and diffuses light. The same material as the base material 11 can be used for the reinforcing plate 35.

  Here, FIG. 17A is a plan view showing the agricultural solar control film 10, FIG. 17B is a cross-sectional view in the X-ray direction of FIG. 17A, and FIG. 17C is an elongated shape. 3 is a perspective view showing a prism 32. FIG.

  The top of the elongated prism 32 is cut into a flat shape to form a top surface 32a. The reinforcing plate 35 is fixed to the top surface 32a. For this reason, the rigidity as the agricultural solar control film 10 as a whole can be provided.

  The reinforcing plate 35 is preferably provided at a location corresponding to a region where it is desired to reduce the amount of light guided in the house 20. By providing such a reinforcing plate 35, the amount of light guided into the house 20 can be adjusted for each region. This is particularly useful when simultaneously growing crops with different patterns (for example, crops with a high light saturation point and crops with a low light saturation point) in the house 20.

  Next, another modification of the second embodiment will be described with reference to FIGS. In the second embodiment, the matte surface 11c is formed on the short surface of the elongated prism 32. However, as shown in FIGS. 18A, 18B, and 18C, the length of the elongated prism 32 in a predetermined area is long. The pear ground 11c may be formed on the surface and the short surface, and the elongate prism 32 in a region other than the predetermined region may not be formed.

  Here, FIG. 18A is a plan view showing the agricultural solar control film 10, FIG. 18B is a cross-sectional view in the X-ray direction of FIG. 18A, and FIG. It is a perspective view which shows the elongate prism 32 in which 11c is formed.

  It is preferable to form the matte surface 11c on the long and short surfaces of the elongated prism 32 corresponding to the region where it is desired to reduce the amount of light guided in the house 20. By providing the elongated prism 32 in which the pear ground surface 11c is formed in this way and the elongated prism 32 in which the pear ground surface 11c is not formed, the amount of light guided into the house 20 can be adjusted for each region. This is particularly useful when simultaneously growing crops with different patterns (for example, crops with a high light saturation point and crops with a low light saturation point) in the house 20.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 Agricultural solar control film 11 Film base material 11a Incident surface 11b Output surface 12 Unit prism 12a Top surface 15 Reinforcement plate 20 House 32 Elongated prism 35 Reinforcement plate

Claims (12)

In agricultural solar control film,
Comprising a film substrate having an entrance surface and an exit surface;
A plurality of convex portions are provided on the exit surface of the film substrate,
An agricultural solar control film, wherein a pear ground is formed on a part of a surface of at least one convex portion, and the pear ground diffuses and emits light entering the incident surface.   The agricultural solar control film according to claim 1, wherein each convex portion includes a unit prism made of a polyhedron.   3. The agricultural solar control film according to claim 2, wherein each unit prism comprises a square-cone unit prism.   The agricultural solar control film according to claim 1, wherein each convex portion is formed of a polygonal elongated prism.   The agricultural solar control film according to claim 4, wherein the elongated prism has a triangular prism shape. In agricultural solar control film,
Comprising a film substrate having an entrance surface and an exit surface;
A plurality of convex portions are provided on the exit surface of the film substrate,
An agricultural solar control film, wherein a pear ground is formed on a part of an incident surface of a film substrate, and the pear ground diffuses light incident on the incident surface.   The agricultural solar control film according to claim 6, wherein each convex portion is composed of a unit prism made of a polyhedron.   8. The agricultural solar control film according to claim 7, wherein each unit prism comprises a square-cone unit prism.   The agricultural solar control film according to claim 6, wherein each convex portion is formed of a polygonal columnar elongated prism.   The agricultural solar control film according to claim 9, wherein the elongated prism has a triangular prism shape. In agricultural solar control film,
Comprising a film substrate having an entrance surface and an exit surface;
A plurality of convex portions are provided on the exit surface of the film substrate,
On the exit surface side of the film substrate, a reinforcing plate having a pear surface is provided, and the pear ground diffuses the light emitted from the output surface ,
Each convex part consists of a truncated prismatic unit prism,
The agricultural solar control film, wherein the reinforcing plate is fixed to the top surface of the unit prism . In agricultural solar control film,
Comprising a film substrate having an entrance surface and an exit surface;
A plurality of convex portions are provided on the exit surface of the film substrate,
On the exit surface side of the film substrate, a reinforcing plate having a pear surface is provided, and the pear ground diffuses the light emitted from the output surface,
Each convex part consists of a triangular prism-like elongated prism having a flat top surface,
The reinforcing plate is agricultural for solar control film you characterized in that it is secured to the top surface of the elongated prism.

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