Vertical solar system

Abstract

This invention provides a solar system that improves the power generation efficiency of vertically installed solar panels in a simple manner. [Solution] The system comprises multiple support columns 3 rising from the ground, vertical solar panels 2 attached to the support columns 3 with their front and back surfaces facing horizontally, a reflective member 6 made of a flexible film 6a extending from near the lower end of the solar panel 2, and an angle adjustment unit 5 for adjusting the angle of the reflective member 6. By changing the angle of the reflective member 6, sunlight is reflected back towards the solar panel 2.

Description

Technical Field

[0001] The present invention relates to a solar system that generates electricity using a vertical solar panel, and more particularly, to a vertical solar system that reflects sunlight to improve power generation efficiency.

Background Art

[0002] A solar panel generates electricity using sunlight, and currently, it is installed and used on the rooftops or roofs of buildings, large sites, etc.

[0003] By the way, such a solar panel is generally installed at an inclination angle of about 30 degrees southward. However, when installed at such an angle, the power generation efficiency is not good during time periods when the sun's angle is low, such as in the morning or evening. In addition, when installing such an inclined solar panel, due to the low inclination angle, not only a large area is required, but also there are problems such as the power generation efficiency deteriorating when snow, fallen leaves, etc. accumulate on the surface.

[0004] On the other hand, in recent years, a vertical solar system has been proposed (non-patent literature). This vertical solar system is installed vertically so that the surface of the solar panel faces east-west, and by installing solar panels on both sides, it can generate more electricity during time periods when the sun is low, such as in the morning or evening. In such a vertical solar system, particularly in areas with a low sun altitude, the power generation amount is larger than that of an inclined solar system, and since the solar panel is installed vertically, there is also an advantage that accumulation of snow, fallen leaves, etc. is eliminated.

Prior Art Documents

Non-Patent Literature

[0005]

Non-Patent Literature 1

[0006] However, such vertical solar systems have a problem in that they are not very efficient at generating electricity during the daytime when the sun is high in the sky.

[0007] Alternatively, the solar panels could be made movable to face the angle of sunlight, but this would require the heavy solar panels to be driven by a motor, resulting in a large and complex system that would increase costs.

[0008] Therefore, the present invention has been made in view of the above problems, and aims to provide a vertical solar system that improves the power generation efficiency of vertically installed solar panels in a simple manner. [Means for solving the problem]

[0009] In other words, in order to solve the above problems, the present invention is configured to include a plurality of support columns that stand upright from the ground, a vertical solar panel attached to the support columns and provided such that the normal direction of the front and back surfaces faces substantially horizontally, a reflective member extending from near the lower end of the solar panel, and an angle adjustment unit for adjusting the angle of the reflective member.

[0010] With this configuration, by adjusting the angle of the reflective elements, sunlight coming from the south and above during the day can be reflected near the solar panels, improving power generation efficiency even during times when the sun is high in the sky.

[0011] Furthermore, in such an invention, the angle adjustment unit is composed of a pair of left and right frames that hold both sides of the reflective member, and a motor that adjusts the angle of the frames.

[0012] With this configuration, the frame holds both sides of the reflective element, allowing the angle of the reflective element to remain constant and reflect light effectively.

[0013] Furthermore, when the reflective member is made of a flexible film, and the angle adjustment section is provided, the two sides of the leading edge of the flexible film are held by a pair of left and right frames, and the angle can be adjusted by changing the tension by winding up the lower end of the flexible film.

[0014] With this configuration, the angle of the reflective element can be adjusted simply by winding up the flexible film.

[0015] Furthermore, when the reflective member is made of a flexible film, and the angle adjustment section is constructed, the two sides of the leading edge of the flexible film are held by a pair of left and right frames, and the tension is changed by winding up the lower end of the flexible film to adjust the angle, and the height position of the pair of left and right frames is also adjusted.

[0016] With this configuration, by changing the height of the tip of the reflective element, it becomes possible to lower the height of the reflective element when the angle of sunlight is low, such as in the morning and evening, and direct sunlight can be directed onto the solar panel.

[0017] Furthermore, the reflective member is provided with multiple openings.

[0018] With this configuration, even if strong winds and rain hit the structure, the wind and rain can be allowed to escape, thus preventing damage to reflective materials and other components.

[0019] Furthermore, in such an invention, the reflective member is formed from a flexible reflective sheet that transmits some light, and the area formed below the reflective sheet can be used as a cultivation area.

[0020] By doing so, it becomes possible to utilize the space between solar panels as farmland.

Advantages of the Invention

[0021] According to the present invention, a plurality of columns standing from the ground, a vertical solar panel attached to the columns and provided such that the normal directions of the front and back surfaces are substantially horizontal, a reflecting member extending from near the lower end of the solar panel, and an angle adjusting unit for adjusting the angle of the reflecting member are provided. By adjusting the angle of the reflecting member, sunlight from the upper south during the day can be reflected near the solar panel. As a result, the power generation efficiency can be improved even during a time period when the solar altitude is high.

Brief Description of the Drawings

[0022] [Figure 1] Schematic side view of a vertical solar system in an embodiment of the present invention [Figure 2] View of the solar panel in this embodiment as seen from the front [Figure 3] View showing an angle adjusting unit in another embodiment [Figure 4] View showing a state where the angles of the left and right frames in this embodiment are changed respectively [Figure 5] View showing a state where the frame is adhered to the solar panel in this embodiment [Figure 6] View showing light irradiation in the morning in this embodiment [Figure 7] Schematic plan view of a solar system in the second embodiment [Figure 8] View showing the state of the reflecting member in the morning and evening in the second embodiment [Figure 9] View showing the state of the reflecting member before noon and after noon in the second embodiment [Figure 10] View showing the state of the reflecting member at noon in the second embodiment [Figure 11]Comparative example showing the reflection situation from the reflective material to the solar panel at noon. [Modes for carrying out the invention]

[0023] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0024] <First Embodiment>

[0025] In this embodiment, the vertical solar system 1, as shown in Figures 1 and 2, is configured so that the front and back surfaces of the solar panels 2 face east and west, generating electricity with the east-facing solar panel 2 in the morning and with the west-facing solar panel 2 in the evening. A distinctive feature is that reflective members 6 extend from the lower ends of the solar panels 2 toward the east and west, and their angles can be adjusted by the angle adjustment section 5. This allows sunlight to be reflected by the reflective members 6 during times when the sun is high in the sky (for example, around midday), enabling power generation on both the front and back solar panels 2. This embodiment will now be described in detail. In this description, the east-west direction will be referred to as the front-to-back direction (or front-to-back direction), and the north-south direction as the left-to-right direction.

[0026] First, as shown in Figure 2, the solar panel 2 consists of multiple power generation modules arranged planarly on the front and back sides inside a rectangular frame 21, and is installed with respect to a support column 3 rising from the ground, with the front and back sides of the frame 21 facing east-west.

[0027] Then, a highly reflective reflective element 6 is attached to the solar panel 2 installed in this manner. When attaching such a reflective element 6, it is possible to install the reflective element on the ground, but in some cases the support pole 3 may be several meters high, resulting in a long distance between the reflective element and the solar panel 2, making it impossible to generate electricity efficiently. Also, if the reflective element is installed on the ground, the ground cannot be used as farmland or a parking lot, thus preventing effective use of the land. Therefore, in this case, the reflective element 6 is installed at a certain height above the ground.

[0028] When providing such reflective members 6, a pair of left and right frames 4 are extended from the left and right support columns 3, or from the frame 21 of the solar panel 2, so as to face east and west (extending from the frame 21 in Figures 1 and 2), and the reflective members 6 are attached to these frames 4. These frames 4 may be made of members that can extend and retract along their longitudinal direction, or they may be non-extendable rod-shaped members, but here they will be made of non-extendable rod-shaped members.

[0029] This frame 4 has a rotatable base end and is configured to allow the angle to be changed on the front side of the front and back surfaces of the solar panel 2 using a motor 51 that constitutes the angle adjustment unit 5. This frame 4 may be lowered between the support columns 3 to escape wind and rain during strong winds or heavy rain, or, as shown in Figure 5, it may be fitted tightly along the surface of the solar panel 2.

[0030] The angle adjustment unit 5 for adjusting the angle of the frame 4 can be anything as long as it can independently adjust the left and right frames 4. For example, as shown in Figures 1 and 2, a motor 51 may be provided at the base to adjust the angle of the frame 4, or, as shown in Figure 3, a wire 52 may be attached to the tip of the frame 4 and suspended from the top of the frame 21 of the solar panel 2, and the length of the wire 52 may be adjusted by a motor 51a.

[0031] Furthermore, an end frame 41 is provided at the tip of the frame 4, which is connected to the pair of left and right frames 4 (see Figure 2). When such an end frame 41 is provided, it is designed to be connected using a joint member such as a universal joint so that changes in the angle of the left and right frames 4 can be accommodated.

[0032] A reflective element 6 is then attached to this frame 4.

[0033] This reflective member 6 is a mirror-like material that reflects sunlight shining from above toward the solar panel 2, and can be made of a thin metal plate or a metal-coated flexible film 6a. However, while using such a thin metal plate can provide strength, its weight would result in a bulky structure. In contrast, a flexible film 6a can be made very lightweight, thus simplifying the structure, and in this embodiment, the reflective member 6 is made of a flexible film 6a. However, when the reflective member 6 is made of such a flexible film 6a, there is a risk of damage from strong winds, so multiple holes or slits are provided on the surface to allow wind and rainwater to escape.

[0034] Furthermore, when the reflective member 6 is constructed using such a flexible film 6a, the central portion will bend under its own weight when the flexible film 6a is attached to the frame 4. In this case, if the flexible film 6a is held only by the left and right frames 4, it will bend into a roughly semi-cylindrical shape as shown in Figure 2, and if it is held by the left and right frames 4 and the tip frame 41, it will bend into a roughly spherical shape as shown in Figure 4. Due to this bending, the reflected light from sunlight will converge in the direction of the focal point of the bending, directing the reflected light towards the vicinity of the center of the solar panel 2. This improves power generation efficiency and eliminates the cause of complaints due to reflected light being directed towards nearby buildings.

[0035] Furthermore, as such a flexible film 6a, PE, acrylic, agricultural PO, or durable fluorine-based films can be used. The reflective surface can be a mirror surface or a textured surface with random irregularities, preferably a prism shape that allows for easier control of light concentration onto the solar panel. The prism shape of one prism is in the range of a base of 30 μm to 30 cm and a height of 15 μm to 20 cm, preferably a base of 30 to 500 μm and a height of 20 μm to 300 μm. By arranging the longitudinal direction of the prism in the north-south direction, the reflected light can be directed towards the solar panel 2.

[0036] The control unit 53 controls the angle adjustment unit 5 to adjust the angle of the reflective member 6 so that sunlight is reflected towards the solar panel 2. Specifically, the direction of sunlight irradiation at the location where the solar panel 2 is installed is memorized for each season and time of day, and the angles of the left and right frames 4 are adjusted according to that time. In addition, weather detectors 54 such as an anemometer, rain gauge, and snow gauge may be installed, and if these weather detectors 54 detect wind speed, rainfall, or snow depth above a standard value, the frames 4 may be turned vertically (see Figure 5) to prevent damage to the reflective member 6 and frames 4. In this case, if the frames 4 are raised and the reflective member 6 covers the solar panel 2, the surface of the solar panel 2 can be protected, and if the ground is used as farmland or a parking lot, the area below the solar panel 2 can be effectively utilized. In particular, when used as farmland, the reduction in crop yield due to shading that occurs when using conventional tilted fixed solar panels for solar sharing can be mitigated by using vertical solar panels. In such locations, crops with low light saturation points, such as leafy vegetables, tea, grains, fruit trees, and flowers, can be cultivated. The flexible film 6a, which has slits and holes, can be used as a shade cloth, and while considering the amount of power generated and the amount of light reaching the crops, if the amount of light reaching the crops is insufficient, the frame 4 can be raised to allow more light to reach the crops.

[0037] Next, we will explain the operation of the solar system 1 configured in this way.

[0038] First, in the morning, sunlight from the east hits the eastern side of solar panel 2, allowing it to generate electricity. At this time, as shown in Figure 6, by tilting the reflective member 6 installed on the adjacent solar panel 2 a few meters to the west towards the ground, the reflected light from there is directed onto the solar panel 2 on the back side, enabling the western solar panel 2 to also generate electricity.

[0039] When the sun's altitude rises, as shown in Figures 1 to 4, the frame 4 is tilted, and the reflective members 6 attached to the frame 4 direct sunlight onto the solar panel 2. At this time, since the sun's altitude in the south varies depending on the season, the control unit 53 is used to change the angle of the left and right frames 4 (as shown in Figure 4) to adjust the angle so that sunlight is directed towards the solar panel 2. During this period when the sun's altitude is high, as shown in Figures 1 and 3, sunlight can be directed onto the solar panel 2 on the west side as well as the east side using the reflective members 6, so power generation can also be achieved on the west side by adjusting the angle of the frame 4.

[0040] Furthermore, when the sun is low in the sky, such as in the evening, sunlight from the west hits the western side of the solar panel 2, generating electricity on that side, just as in the morning. On the other hand, by tilting the reflective members 6 provided on the solar panel 2 in the adjacent row to the east towards the ground, the reflected light from them hits the solar panel 2 on the back side, enabling the eastern solar panel 2 to also generate electricity.

[0041] Furthermore, during such power generation, if the weather detector 54 detects strong winds, heavy rain, or snowfall exceeding a certain threshold, the frame 4 is rotated to closely contact the solar panel 2 (see Figure 5) to prevent damage to the frame 4 and reflective material 6, thereby preventing damage to the reflective material 6 and the solar panel 2.

[0042] As described above, according to the first embodiment, a plurality of support columns 3 rising from the ground, a vertical solar panel 2 attached to the support columns 3 with the normal direction of its front and back surfaces facing approximately horizontally, a reflective member 6 extending from near the lower end of the solar panel 2, and an angle adjustment unit 5 for adjusting the angle of the reflective member 6 are provided. By adjusting the angle of the reflective member 6, sunlight from the south above during the day can be reflected near the solar panel 2, thereby improving power generation efficiency even during times when the sun is high in the sky.

[0043] <Second Embodiment>

[0044] Next, a second embodiment will be described.

[0045] In the first embodiment described above, the reflective members 6 are held by the left and right frames 4 to change the angle of the frames 4. In this second embodiment, for example, with the height of the solar panels 2 set to 2 meters and the distance between the solar panels 2 set to a wide 6 meters, as shown in Figures 7 to 10, a crosslinking member 7 is provided between the solar panels 2, and the tip of the reflective member 6, which is made of a flexible film, is suspended from it. With the lower end positioned below the solar panels 2, the tension of the reflective member 6 is changed by winding it up with the second motor 51b, thereby changing the angle of the reflective member 6. The second embodiment will now be described.

[0046] The bridging member 7 is attached across the upper ends of the frames 21 of adjacent solar panels 2 in the direction of the surface of the solar panel 2, and is made of pipe or the like. This bridging member 7 is used to reinforce the frames 21 of the solar panels 2.

[0047] The tip of the reflective member 6 is attached to the central part of the bridging member 7 via a wire 52. This wire 52 is driven vertically by a second motor 51b via rollers, thereby moving the tip frame 41 attached to the tip of the reflective member 6 up and down, as shown in Figures 8 to 10. The second motor 51b is provided on both sides of the lower end of the frame 21 of the solar panel 2, and guides the wire 52 from there along the frame 21 upwards, and then guides the wire 52 to the central part of the bridging member 7 and below it.

[0048] Furthermore, tip frames 41 are attached to both sides and the tip of the reflective member 6, allowing it to rotate around the upper end and to grip both sides of the reflective member 6, which is made of a flexible film, and hold it in a flat position.

[0049] The reflective member 6 attached to this tip frame 41 is made of a flexible reflective member 6, similar to the first embodiment, and is configured to transmit some light to illuminate crops below, while reflecting the remaining light to illuminate the solar panel 2. If this reflective member 6 were made of a single reflective member 6, it would be damaged by wind, so a wind vent 6b (see Figure 7) is provided. As such a wind vent 6b, methods such as providing multiple slits like a shade cloth, providing multiple holes, or partially overlapping multiple reflective members 6 and allowing wind to escape from the overlapped portion can be used. This creates a gap at the overlapped position, allowing wind to pass through the fields and farmland located below the reflective member 6.

[0050] Furthermore, the reflective member 6 can be equipped with a water spraying section 8 at the upper end of the solar panel 2 (see Figure 8, etc.), which allows for the cleaning of the solar panel 2 and the reflective member 6 by spraying water from it, and also allows for the spraying of water from the wind vent 6b of the reflective member 6 into fields or farmland.

[0051] The angle adjustment unit 5 is configured to allow adjustment of the angle of the reflective member 6, and is composed of a first motor 51a, a second motor 51b, and the like, in order to adjust the height position of the tip of the reflective member 6 and the angle of the reflective member 6.

[0052] In this angle adjustment unit 5, the reflective member 6 is completely retracted to prevent damage to the reflective member 6 in strong winds. When retracting the reflective member 6, if a certain level of wind force is detected by a sensor (not shown) or if strong winds are predicted in advance, the first motor 51a and the second motor 51b are set to retract all of the reflective member 6 to the lower side of the solar panel 2. At this time, a cleaning member 55 (see Figures 8 to 10), such as a sponge or cloth (not shown), is provided adjacent to the roller for retracting the reflective member 6, and the reflective member 6 is sandwiched between these cleaning members 55 so that it can be wiped clean during retraction and unwinding.

[0053] Furthermore, the height and angle of the reflective member 6 attached to the end of the wire 52 are adjusted by the control unit 53. When adjusting the height of the reflective member 6, first, if the light is shining from an oblique direction, such as in the morning or evening, the position of the tip of the reflective member 6 is lowered using the second motor 51b, as shown in Figure 8, and then the reflective member 6 is wound up using the first motor 51a to eliminate any bending of the reflective member 6. At this time, the tip of the reflective member 6 is positioned below the center due to the weight of the tip frame 41, and the reflective member 6 bends at a right angle at the lower end of the tip frame 41.

[0054] On the other hand, when the sun is shining from above, such as from midday to midday, the tip of the reflector 6 is raised using the second motor 51b, as shown in Figures 9 and 10, and then the first motor 51a is used to wind up the reflector 6 to apply tension. At this time, the part of the reflector 6 where the tip frame 41 is located is at a steep angle to the ground due to the weight of the tip frame 41, and the light shining from above is reflected downward and shines on the solar panel 2. Meanwhile, the light shining from the reflector 6 below is at a gentler angle than the tip and is reflected diagonally upward and shines on the solar panel 2. As a result, even if the length from the bottom end to the tip of the reflector 6 is increased, all the light can be directed towards the solar panel 2.

[0055] On the other hand, if the reflective member 6 is made of a flat metal plate or the like, and its length is longer than the vertical length of the solar panel 2, then, as shown by the diagonal left arrow in the upper part of Figure 11, there will be areas that are not illuminated by the solar panel 2. However, as in this embodiment (see the lower part of Figure 11), by partially changing the angle, even if the reflective member 6 is made longer, it becomes possible to illuminate the solar panel 2 with almost all of the light. The height position of the tip of the reflective member 6 and the tension applied by the first motor 51a are set in advance for each region and time.

[0056] Next, the operation of the solar system 1 in the second embodiment configured in this way will be described.

[0057] First, when the sun's angle is low, such as in the morning, the second motor 51b is used to lower the position of the tip of the reflector 6, and the first motor 51a is used to correct the deflection of the reflector 6 (see Figure 8).

[0058] As a result, sunlight is directly shone on the front side (east side) of solar panel 2 (see dashed line in Figure 8). This causes solar panel 2 to generate electricity on its east side.

[0059] Next, when the sun has risen, such as before noon, the second motor 51b is used to slightly raise the tip of the reflector 6 (see Figure 9).

[0060] As shown by the dashed line in Figure 9, light shining diagonally from the upper edge of the adjacent solar panel 2 illuminates the solar panel 2, causing power generation on both inner surfaces of the pair of solar panels 2. In particular, on the eastern side of the solar panel 2, sunlight directly illuminates the solar panel 2, and sunlight also illuminates the lower, gently angled reflective member 6 of the reflective members 6, which then illuminates the solar panel 2. This allows power generation to occur on the back side (west side) of the solar panel 2 as well.

[0061] Next, when the sun reaches its highest altitude (such as directly overhead), the second motor 51b is used to further raise the tip of the reflector 6 (see Figure 10).

[0062] As a result, at the tip of the reflective member 6, light from above is reflected diagonally downward by the reflective member 6 and irradiates the solar panel 2. On the other hand, at the lower end of the reflective member 6, light from above is reflected diagonally upward by the reflective member 6 and irradiates the solar panel 2. These reflections are similarly reflected on both the front and back sides of the solar panel 2, thereby enabling power generation on both sides of the solar panel 2 even during the daytime.

[0063] Furthermore, when light is reflected by the reflective member 6 in this manner, light transmitted through the slits, such as in a shade cloth, or light of a specific wavelength transmitted through the reflective member 6, is irradiated onto the crops below, allowing those crops to grow.

[0064] Then, in the afternoon, if the sun is low in the sky, the position of the tip of the reflector 6 is lowered as in the morning (see Figure 9), and in the evening, if the angle of the sun is low, the position of the tip of the reflector 6 is lowered using the second motor 51b, and the deflection of the reflector 6 is corrected using the first motor 51a (see Figure 8).

[0065] Furthermore, when winding up the reflective member 6 in this manner, or when it becomes necessary to wind up the reflective member 6 due to strong winds or the like, the first motor 51a and the second motor 51b wind the reflective member 6 to the lower side of the solar panel 2, and at the same time, a cleaning member 55 such as a sponge is used to sandwich both sides of the reflective member 6 and remove any dirt adhering to it.

[0066] As described above, according to the second embodiment, the angle adjustment unit 5 is composed of a tip frame 41, a wire 52, a first motor 51a, a second motor 51b, etc., and the angle of the reflective member 6 is adjusted by changing the tension of the reflective member 6, which is made of a flexible film. Therefore, even if the length of the reflective member 6 is increased, the angle of the reflective member 6 can be adjusted with a simple mechanism, and all sunlight can be directed onto the solar panel 2.

[0067] The present invention is not limited to the embodiments described above and can be implemented in various ways.

[0068] For example, in the first embodiment described above, the frame 4 is attached to the support column 3 and the frame 21 of the solar panel 2, and the reflective member 6 is attached in a cantilevered manner. However, a retractable support column 3 may be provided at the tip of the frame 4 and allowed to hang down so as to be able to withstand the weight of the reflective member 6.

[0069] Furthermore, in the first embodiment described above, a flexible film 6a is provided to absorb the difference in angles between the left and right frames 4. However, if the structure is made of a hard material such as a metal plate, the reflective member 6 and the frame 4 may be connected by a spring or the like to absorb the twisting caused by the difference in angles between the left and right frames 4.

[0070] Furthermore, in the first embodiment described above, frames 4 and reflective members 6 are provided on both the east and west sides. However, frames 4 and reflective members 6 may be provided on only one side, and the reflective members 6 may be used interchangeably by rotating them so that they pass under the solar panel 2 in the morning and evening.

[0071] Furthermore, while the first and second embodiments described above described the case where the normal direction of the surface of the solar panel 2 is oriented in the east-west direction, the methods can also be applied to cases where the normal direction is oriented in other directions.

[0072] In the second embodiment, tip frames 41 are provided on both sides of the tip of the reflective member 6, which is made of a flexible film. However, a multi-joint frame may be provided on the side of the reflective member 6, allowing the angle of each frame to be changed while the reflective member is pulled flat. In this case, since the reflective member 6 cannot be rolled up, the height of the tip of the reflective member 6 and the height of each joint can be adjusted using a wire suspended from above, thereby adjusting the angle between each joint.

[0073] Furthermore, in the second embodiment described above, the angle of the reflective member is adjusted by the weight and tension of the tip frame 41. However, a relatively heavy wire or the like may be attached to the side of the reflective member 6, and the angle of the reflective member 6 may be adjusted by the weight and tension of the wire 52.

[0074] In the second embodiment described above, the angle of the reflective member was adjusted so that power is generated only on either the east or west side during times when the sun is low in the sky, such as in the morning or evening. However, the angle of the reflective member located on the east side may be adjusted so that power is generated on both sides of the solar panel. [Explanation of symbols]

[0075] 1. Solar System 2. Solar panels 21...frames 3...post 4...frames 41... Tip frame 5... Angle adjustment section 51...motor 51a... First Motor 51b...Second motor 52... Wire 53. Control Unit 54. Weather detector 55... Cleaning components 6. Reflective material 6a... Flexible film 6b...Ventilation section 7. Bridged Member 8...Water spray part

Claims

1. Multiple support pillars rising from the ground, A vertical solar panel is attached to the support column and positioned so that the normal direction of its front and back surfaces is oriented approximately horizontally, A reflective member extending from near the lower end of the solar panel, An angle adjustment unit for adjusting the angle of the reflective member and A vertical solar system characterized by having the following features.

2. The vertical solar system according to claim 1, wherein the angle adjustment unit comprises a pair of left and right frames that hold both sides of the reflective member, and a motor that adjusts the angle of the frames.

3. When the reflective member is made of a flexible film, The vertical solar system according to claim 1, wherein the angle adjustment unit holds both sides of the leading edge of the flexible film with a pair of left and right frames, and adjusts the angle by changing the tension by winding up the lower end of the flexible film.

4. When the reflective member is made of a flexible film, The vertical solar system according to claim 1, wherein the angle adjustment unit holds both sides of the leading edge of the flexible film with a pair of left and right frames, changes the tension by winding up the lower end of the flexible film to adjust the angle, and also adjusts the height position of the pair of left and right frames.

5. The vertical solar system according to claim 1, wherein the reflective member has a plurality of openings.

6. Multiple support poles rising from the farmland where crops are cultivated, A vertical solar panel is attached to the support column and positioned so that the normal direction of its front and back surfaces is oriented approximately horizontally, A reflective member extending from near the lower end of the solar panel, An angle adjustment unit for adjusting the angle of the reflective member, Equipped with, A vertical solar system characterized in that the reflective member is formed from a flexible reflective sheet that transmits light of a specific wavelength, and the area formed below the reflective sheet is used as a cultivation area.

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