Eaves

Abstract

To provide a structure in which a solar battery panel installed on a building can generate power efficiently.SOLUTION: Eaves 41 provided at a building 1 include: a body part 42 extending in the left-to-right direction in parallel with respect to a horizontal surface H, and having a flat surface part 44; and a solar battery panel 43 arranged on the flat surface part 44. Along the frontward / backward direction in parallel with the horizontal surface H and orthogonal with respect to the left-to-right direction, the plurality of body parts 42 is arranged side by side, and the plurality of flat surface parts 44 is inclined with an acute angle with respect to the frontward / backward direction when viewed from the left-to-right direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a canopy. [Background technology]

[0002] 2. Description of the Related Art As a mounting structure for a solar cell panel that converts sunlight into electrical energy and generates electricity, it is known to install a solar cell panel on a window of a building (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-151795 A

[0004] Solar panels generate electricity most efficiently when they are installed so that sunlight is incident at a right angle. In Japan, it is known that solar panels generate electricity most efficiently when installed at an inclination angle of about 30 degrees. Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the solar cell panel is installed on a window as in the technology described in Patent Document 1, the inclination angle of the solar cell panel is 90 degrees, which reduces the power generation efficiency of the solar cell panel.

[0006] The present invention has been made in consideration of the above circumstances, and has an object to provide a structure that enables solar cell panels installed on a building to efficiently generate power. [Means for solving the problem]

[0007] In order to solve the above problems, a eave is provided that is installed on a building, comprising a main body portion extending in a first direction parallel to a horizontal plane and having a planar portion, and a solar cell panel arranged on the planar portion, wherein the main body portions are arranged in parallel in multiple rows along a second direction parallel to the horizontal plane and perpendicular to the first direction, and the multiple planar portions are inclined at an acute angle to the second direction when viewed from the first direction. Effect of the Invention

[0008] According to the present invention, solar cell panels installed on buildings can generate power efficiently. [Brief description of the drawings]

[0009] [Figure 1] 1 is a cross-sectional view showing a floor 11 of a building 1. FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] 1 is a cross-sectional view showing a state in which eaves 141 are installed on a certain floor 11. FIG. [Diagram 5] 13 is a cross-sectional view of the canopy 141. FIG. [Figure 6] 13 is a cross-sectional view showing a state in which the canopy 141 is tilted about an axis in the left-right direction. [Figure 7] 13 is a cross-sectional view showing a state in which the eaves 41 are provided on the outside of the chamber 31. FIG. [Figure 8] 4 is a cross-sectional view showing a state in which the eaves 41 are provided on the outer wall 25. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the embodiment described below is subject to various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiment and illustrated examples.

[0011] <Building composition> Fig. 1 is a cross-sectional view showing a schematic configuration of a building 1 according to an embodiment of the present invention. The building 1 is, for example, an office building having multiple floors. Fig. 1 shows a cross-section of a floor 11 of the building 1. In Fig. 1, the direction in which the multiple floors 11 are stacked is the up-down direction, and the direction perpendicular to the up-down direction is the horizontal direction. The horizontal direction is the direction from the outside to the inside of the building 1 as the front-rear direction, and the direction perpendicular to the front-rear direction is the left-right direction.

[0012] The floor 11 is provided between a lower slab 21 and an upper slab 22. The floor 11 is provided between a lower floor 12 and an upper floor 13. The floor 11 is separated from the lower floor 12 by the lower slab 21. The floor 11 is also separated from the upper floor 13 by the upper slab 22.

[0013] A floor panel 23 is laid above the lower slab 21. A ceiling panel 24 is installed below the upper slab 22. The space between the floor panel 23 and the ceiling panel 24 is partitioned as a room 31.

[0014] On floor 11, an exterior wall 25 exposed to the outside air is constructed at an opening surrounded by columns and beams (neither of which are shown) constructed on the outer periphery of building 1. The exterior wall 25 is provided along the outer edges of the lower slab 21 and the upper slab 22. An opening 25A is formed in the exterior wall 25, and a window 26 fitted into a window frame is provided along the edge of the opening 25A. The window 26 faces the outdoors and is installed in a direction that allows sunlight to shine in (for example, facing east, southeast, south, southwest, or west). A canopy 41 is provided on the window 26.

[0015] (Eaves) The eaves 41 blocks a portion of the sunlight entering the room 31 through the window 26. The eaves 41 is provided on the inside of the room 31 at the window 26. The eaves 41 is fixed to the window 26 by adhesive or via a bracket (not shown). The eaves 41 has a main body 42 and a solar cell panel 43.

[0016] The main body 42 is a member extending in the left-right direction (an example of a first direction). As shown in FIG. 2, the main body 42 has a right-angled triangular cross section when viewed in the left-right direction, and has a flat surface 44 at a position corresponding to the hypotenuse of the right-angled triangle. As shown in FIG. 3, a plurality of the main body parts 42 are arranged in parallel along the front-rear direction (an example of a second direction). In this embodiment, five main body parts 42 are arranged in the front-rear direction. The five main body parts 42 are arranged in the front-rear direction with the flat surface 44 at the front side. In other words, the flat surface 44 faces the window 26. The number of the main body parts 42 arranged in the front-rear direction may be any number. In addition, when the plurality of main body parts 42 are arranged in parallel along the front-rear direction, they may be parallel to the horizontal plane H or may be oblique to the horizontal plane H.

[0017] The flat surface portion 44 is a flat surface extending in the left-right direction in the main body portion 42. The flat surface portion 44 is a surface on which the solar cell panel 43 is disposed. The flat surface portion 44 is inclined at an acute angle R with respect to the front-rear direction when viewed in the left-right direction. In this embodiment, the angle R is approximately 30 degrees. Note that the angle R may be any angle, but an angle at which the power generation efficiency of the solar cell panel 43 is high is preferable.

[0018] The solar cell panel 43 is configured to convert solar energy into electric power by utilizing the photovoltaic effect. A plurality of solar cell panels 43 are arranged on the flat surface portion 44. That is, the solar cell panels 43 are inclined at an acute angle R with respect to the front-rear direction when viewed from the left-right direction, and face the window 26. The plurality of solar cell panels 43 are electrically connected in series to obtain a required predetermined voltage. Note that the solar cell panel 43 is not limited to a panel-shaped panel as long as it can convert solar energy into electric power, and may be a film-shaped solar cell or a sheet-shaped solar cell.

[0019] The power generated by the solar panel 43 is connected to the distribution board by a cable via an inverter. The inverter converts the direct current generated by the solar panel 43 into alternating current. The distribution board also supplies power to various equipment in the room 31. Here, the various equipment are, for example, the lighting in the room 31, motorized blinds and roller screens, an airflow system that blows wind along the window 26, a damper that controls the air flow rate flowing through an air conditioning duct connected to the room 31, and the like. That is, the power generated by the solar panel 43 is supplied to these various equipment via the inverter and the distribution board. The generated power may be used for other equipment (e.g., an air conditioner, etc.) in the building 1 via the distribution board. Alternatively, the generated power may be output (i.e., the power may be sold to a power company) via a power transmission line connected to the building 1.

[0020] With the solar cell panel 43 arranged on the flat surface 44, the five main body parts 42 arranged in the front-rear direction are fixed to the upper surface of a rectangular plate 45. The rectangular plate 45 is a base for forming the multiple main body parts 42 together to form the canopy 41. Any method may be used to form the multiple main body parts 42 together. For example, a rectangular frame may be used instead of the rectangular plate 45, and the left and right end faces of the main body parts 42 may be fixed to the frame.

[0021] <Effects> The eaves 41 in this embodiment are provided on a building 1, and include a main body 42 extending in a left-right direction parallel to a horizontal plane H and having a planar portion 44, and a solar cell panel 43 arranged on the planar portion 44, with multiple main body portions 42 arranged in parallel along a front-to-back direction parallel to the horizontal plane H and perpendicular to the left-to-right direction, and the multiple planar portions 44 are inclined at an acute angle to the front-to-back direction when viewed from the left-to-right direction.

[0022] According to the above-described canopy 41, the solar cell panel 43 arranged on the flat portion 44 is inclined at an acute angle R with respect to the front-to-rear direction parallel to the horizontal plane H when viewed from the left-right direction. Therefore, compared to a state in which the solar cell panel 43 is installed on a horizontal plane such as the rooftop of a building or a state in which the solar cell panel 43 is installed on a vertical surface such as a window, the solar cell panel 43 can receive sunlight at an angle close to vertical. As a result, the solar cell panel 43 can generate electricity efficiently.

[0023] Moreover, the eaves 41 according to this embodiment are provided on the window 26 .

[0024] The above-described canopy 41 can block a portion of the sunlight entering through the window 26. In addition, a portion of the sunlight blocked by the canopy 41 can be converted into electricity by the solar cell panel 43.

[0025] In addition, the solar cell panel 43 reflects a portion of the sunlight. While the sun is low in the sky, the sunlight reflected by the solar cell panel 43 reaches the ceiling of the room 31, thereby making the inside of the room 31 bright.

[0026] Moreover, the eaves 41 according to this embodiment is disposed inside the chamber 31 .

[0027] When a solar panel is installed outdoors, dirt such as sand may adhere to the surface, reducing the power generation efficiency. However, according to the eaves 41 of this embodiment, the solar panel 43 is placed inside the room 31, so the solar panel 43 is less likely to become dirty. Therefore, the solar panel 43 is less likely to experience a reduction in power generation efficiency due to dirt adhering to its surface.

[0028] If eaves are provided within room 31, the eaves will be heated by sunlight, which is one of the causes of the rise in temperature in room 31. However, with eaves 41 of this embodiment, solar cell panels 43 are arranged on main body 42 where sunlight hits, and the solar cell panels 43 convert part of the sunlight into electricity. Therefore, heating of eaves 41 by sunlight is suppressed. As a result, the cooling load within room 31 can be reduced.

[0029] <Modification> The modifications described below may be applied in combination.

[0030] (1) Variation 1 The canopy 41 may be a canopy 141 in which the main body is provided so as to be tiltable about an axis in the left-right direction.

[0031] 4, the eaves 141 is provided on the inside of the room 31 at the window 26. The eaves 141 is fixed to the window 26 by adhesive or via a bracket (not shown). The eaves 141 has a main body 142 and a solar cell panel 143.

[0032] The main body portion 142 is a member extending in the left-right direction. In this embodiment, the main body portion 142 is a plate member extending in the left-right direction, and has a rectangular cross section when viewed in the left-right direction. The main body portion 142 has a flat portion 144 on one surface. A plurality of the main body portions 142 are arranged in parallel along the front-rear direction. In this modified example, five main body portions 142 are arranged in the front-rear direction. Note that the number of main body portions 142 arranged in the front-rear direction may be any number. Furthermore, when the multiple main body portions 142 are arranged in parallel along the front-rear direction, they may be parallel to the horizontal plane H or oblique to the horizontal plane H.

[0033] The flat surface portion 144 is a flat surface extending in the left-right direction in the main body portion 142. The flat surface portion 144 is a surface on which the solar cell panel 143 is disposed.

[0034] A rotation shaft 146 is provided on both left and right end faces of the main body 142 at the center in the front-rear direction when viewed in the left-right direction. The rotation shaft 146 is provided so as to protrude from both the left and right ends of the main body 142. The rotation shaft 146 is attached to a pair of frame members 147 extending in the front-rear direction. The rotation shaft 146 is attached to the pair of frame members 147 so that the main body 142 can tilt around the rotation shaft 146 as the rotation axis (i.e., around the left-right direction as the rotation axis). Specifically, for example, the rotation shaft 146 is inserted into a hole penetrating the frame member 147 in the front-rear direction, and then a fastener is attached to prevent the rotation shaft 146 from falling out of the hole, thereby attaching the rotation shaft 146 to the frame member 147. The pair of frame members 147 are arranged along both the left and right ends of the main body 142.

[0035] The rotating shafts 146 are connected to a drive unit (not shown). The drive unit tilts the main body 142 by rotating the rotating shafts 146. The drive unit is, for example, a motor. For example, the drive units are connected one by one to the rotating shafts 146 on the left end side of the main body 142 that are arranged in parallel along the front-rear direction.

[0036] The drive unit is connected to a control unit (not shown) via a cable. The control unit is connected to the above-mentioned distribution board via a cable. The control unit controls the power supplied to the drive unit.

[0037] The solar cell panel 143 is configured to convert solar energy into electric power by utilizing the photovoltaic effect. A plurality of solar cell panels 143 are arranged on the flat surface portion 144. The plurality of solar cell panels 143 are electrically connected in series to obtain a required predetermined voltage. Note that the solar cell panel 143 is not limited to a panel-shaped panel as long as it can convert solar energy into electric power, and may be a film-shaped solar cell or a sheet-shaped solar cell.

[0038] When the control unit supplies power to the drive unit, the drive unit is driven and the main body unit 142 tilts. When the altitude of the sun rises, the control unit supplies power to the drive unit so that the main body unit 142 tilts so that the angle R at which the flat surface unit 144 tilts with respect to the front-back direction when viewed from the left-right direction becomes smaller. When the altitude of the sun falls, the control unit supplies power to the drive unit so that the main body unit 142 tilts so that the angle R becomes larger. By tilting the main body unit 142 in accordance with the altitude of the sun in this way, the solar cell panel 143 can receive sunlight at an angle close to vertical, so that the solar cell panel 143 can generate power efficiently. Note that the angle R does not change significantly in a short period of time, so the control unit may intermittently supply power to the drive unit. In addition, the control unit may supply different power to multiple drive units so that the angle R at which the flat surface unit 144 tilts may be different for each main body unit 142.

[0039] In the present modified example, the main body 142 of the canopy 141 is tiltable about an axis in the left-right direction.

[0040] According to the above-described canopy 141, since the main body 142 is tiltable, the main body 142 can be tilted so that the solar cell panel 143 receives sunlight at an angle close to perpendicular in accordance with changes in the altitude of the sun. Therefore, the solar cell panel 143 can generate electricity efficiently.

[0041] Furthermore, between two adjacent main body parts 142, the magnitude of each angle R can be adjusted so that the main body part 142 arranged at the front does not block sunlight attempting to enter the solar cell panel 143 arranged on the flat surface part 144 of the main body part 142 arranged at the rear. In other words, by making the angle R at which the flat surface part 143 of the main body part 142 arranged at the front smaller than the angle R at which the flat surface part 143 of the main body part 142 arranged at the rear is inclined, the light receiving area of ​​the solar cell panel 143 in the entire canopy 141 can be increased, and power generation by the solar cell panel 143 can be performed efficiently.

[0042] (2) Variation 2 As shown in FIG. 7, the eaves 41 may be provided on the outside of the chamber 31.

[0043] (3) Variation 3 As shown in FIG. 8, the eaves 41 may be provided on the outer wall 25.

[0044] (4) Variation 4 The eaves 41 may be provided with a shading device such as a blind or a roller screen at the bottom. [Explanation of symbols]

[0045] 1. Building 26…Window 31…Room 41,141…Eaves 42,142…Main body 43,143…Solar panels 44,144…Plane part H…Horizontal surface

Claims

1. A canopy provided on a building, A main body portion extending in a first direction parallel to a horizontal plane and having a flat surface; A solar panel disposed on the planar portion; Equipped with The main body portions are arranged in parallel along a second direction that is parallel to the horizontal plane and perpendicular to the first direction, The planar portions are inclined at an acute angle with respect to the second direction when viewed from the first direction. Eaves.

2. the building has a window; The canopy according to claim 1 , wherein the canopy is provided on the window.

3. the building includes a room having the window; The canopy of claim 2 , wherein the canopy is disposed inside the chamber.

4. The canopy according to claim 1 , wherein the main body portion is tiltable about an axis of the first direction.

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