Solar panel unit and building member

Abstract

To promote energy saving by efficiently utilizing sunlight hitting a building.SOLUTION: A solar panel unit is provided with a solar panel, a reflective plate, and a reflective lens arranged on the solar panel side of the flat surface part of the reflective plate. The solar panel has a central part where a plurality of cells is arranged and a peripheral part where the cells are not disposed, and the reflective lens is formed of a convex lens disposed on the solar panel side of the flat surface part.SELECTED DRAWING: Figure 13

Description

Technical Field

[0001] The present invention relates to a solar panel unit in which a plurality of cells that generate electricity by sunlight are arranged, and a building member including the solar panel unit.

Background Art

[0002] Conventionally, as a building member arranged in a building, a window that naturally opens and closes by an external force such as wind is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The window of Patent Document 1 above can suppress the use of an air conditioner or the like by performing natural ventilation according to the situation such as wind, and can achieve energy saving of a building. However, sunlight, which is a representative of natural energy along with wind, is not utilized, and further energy saving using sunlight is required.

[0005] An object of the present invention is to promote energy saving by using sunlight.

Means for Solving the Problems

[0006] One embodiment includes a solar panel, a reflecting plate having a flat portion disposed in parallel with and spaced from the solar panel, and a reflecting lens disposed on the solar panel side of the flat portion of the reflecting plate. The solar panel has a central portion formed by a plurality of cells of a double-sided light receiving type arranged at predetermined intervals and sandwiched between transparent members, and a peripheral portion where no cells are arranged. The reflecting plate has a light transmitting portion that transmits a certain amount of light hitting the solar panel to the indoor side. The reflecting lens is a convex lens disposed on the solar panel side of the flat portion, which is a solar panel unit. It is.

Advantages of the Invention

[0007] According to this embodiment, sunlight can be efficiently utilized, and energy conservation can be promoted.

Brief Description of the Drawings

[0008]

Figure 1

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Figure 13

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MODE FOR CARRYING OUT THE INVENTION

[0009] The solar panel unit of the embodiment and the building member provided with the solar panel unit will be described with reference to the drawings. As a building member provided with the solar panel unit of the present embodiment, a ventilation window that naturally opens and closes by an external force such as wind will be exemplified and described. However, the building member provided with the solar panel unit may be a curtain wall, a wall material, a fence, a roof member, etc. arranged on the outer periphery of the building, and is not particularly limited.

[0010] The ventilation window of the present embodiment is, for example, a window installed in an opening formed above a room of a building. As shown in FIG. 1, two natural ventilation windows that open and close independently are arranged side by side in the left - right direction to form a continuous window. Note that the ventilation window may be a continuous window in which three or more windows are arranged, or may be a single window.

[0011] The ventilation window is composed of an upper frame 11, a lower frame 12, and left and right vertical frames 13 and 14 made of a metal material such as aluminum, assembled around the four sides, and has a frame body 1 with a plurality (two in FIG. 1) of opening frames formed by fixing a vertical partition 15 between the upper frame 11 and the lower frame 12, and has shoji 2, 2 that are respectively arranged to be openable and closable in each opening frame, and is composed of two natural ventilation windows arranged side by side left and right. Hereinafter, regarding the natural ventilation window of the present embodiment, mainly using the natural ventilation window arranged on the right side of the ventilation window, it will be described with reference to the drawings.

[0012] (Natural ventilation window) As shown in FIGS. 2 and 3, the natural ventilation window of the present embodiment has an opening frame composed of an upper frame 11, a lower frame 12, a vertical partition 15, and a right vertical frame 14, and a shoji 2 in which a solar panel unit 5 is mounted on the inner circumference of a frame body formed by assembling an upper sash 21, a lower sash 22, and left and right vertical sashes 23, 24 made of a metal material such as aluminum around the four sides.

[0013] The shoji 2 is rotatably supported by a rotation shaft 2a at a position above the intermediate height (about 1 / 3 from the top) in the height direction of the left and right vertical sashes 23, 24, and the upper part of the rotation shaft 2a is on the indoor side and the lower part of the rotation shaft 2a is on the outdoor side, and the opening is opened and closed by tilting. A weight 25 protruding indoors is provided on the upper sash 21 of the shoji 2, and it is balanced to naturally open and close around the rotation shaft 2a by the wind force (external force) applied to the shoji 2.

[0014] On the expected surface closer to the indoor side of the vertical partition 15, an opening and closing arm 4 driven by a drive motor 85 and controlling the opening and closing states of the shoji 2, 2 is provided. As shown in FIGS. 3 and 5(a), the opening and closing arm 4 has an upper arm 41 provided above the rotation shaft 4a and a lower arm 42 provided below the rotation shaft 4a, and the upper arm 41 and the lower arm 42 are connected at a predetermined angle. Rollers 41a, 42a that contact the indoor side surface of the left vertical sash 23 of the shoji 2 are provided at the tip ends of the upper arm 41 and the lower arm 42.

[0015] The drive motor 85 is controlled by the natural ventilation control means 83 to which detection devices such as the wind speed sensor 81 and the rainfall sensor 82 are connected, and is driven by the electric power supplied from the storage battery 84 or the commercial power supply 86. The storage battery 84 is supplied with the electric power generated by the solar panel unit 5, and the electric power supplied from the commercial power supply 86 can be saved.

[0016] Then, based on the detection information such as the wind speed sensor 81 and the rainfall sensor 82, when the weather is calm without rainfall or the like, as shown in FIG. 3, the upper arm 41 of the opening and closing arm 4 is inclined about 45 degrees from the vertical state to the indoor side, and the drive motor 85 is driven so that the lower arm 42 is in a substantially vertical state, allowing opening as in the case of the shoji 2 indicated by the dotted line. On the other hand, in bad weather such as when the wind is strong, the natural ventilation control means 83 can drive the drive motor 85 so that the upper arm 41 of the opening and closing arm 4 is in a substantially vertical state, restricting the opening of the shoji 2.

[0017] As shown in FIG. 4, the upper frame 11 of the frame body 1 is attached to the inner periphery of the housing opening A via an anchor member B fixed to the housing, and has an upper frame main body portion 111 disposed on the inner periphery of the housing opening A, a door stop wall 112 hanging downward from the inner periphery on the outdoor side of the upper frame main body portion 111, and a hanging wall 113 hanging downward from the inner peripheral surface of the upper frame main body portion 111.

[0018] As shown in FIG. 4, the lower frame 12 of the frame body 1 is attached to the inner periphery of the housing opening A via an anchor member B fixed to the housing, and has a lower frame main body portion 121 disposed on the inner periphery of the housing opening A and a door stop portion 122 rising upward from the inner periphery on the indoor side of the lower frame main body portion 121.

[0019] As shown in FIGS. 5(a) and 5(b), the right vertical frame 14 of the frame body 1 is attached to the inner periphery of the housing opening A via an anchor member B fixed to the housing, and includes a right vertical frame main body portion 141 disposed on the inner periphery of the housing opening A, an outdoor side wall 142 extending in the inner peripheral direction from the outdoor side end of the right vertical frame main body portion 141, an airtight wall 143 extending in the inner peripheral direction from the inner peripheral surface near the outdoor side of the right vertical frame main body portion 141, and a fixing groove 144 for fixing an airtight material attachment member described later.

[0020] The vertical post 15 is fixed between the upper frame 11 and the lower frame 12, and includes a vertical post main body portion 151 having a hollow portion, an outdoor side wall 152 extending in the inner peripheral direction from the outdoor side end of the vertical post main body portion 151, an airtight wall 153 extending in the inner peripheral direction from the inner peripheral surface near the outdoor side of the vertical post main body portion 151, and a fixing groove 154 for fixing an airtight material attachment member. The vertical post 15 is expected to have a larger dimension than the left and right vertical frames 13 and 14, and the vertical post main body portion 151 protrudes indoors. The opening and closing arm 4 is provided on the expected surface of the vertical post main body portion 151 that protrudes indoors.

[0021] On the other hand, as shown in FIG. 4, the upper frame 21 of the shoji 2 includes an upper frame main body portion 211 having a glass bay width 21a on the inner periphery, an outer peripheral portion 212 protruding from the outer periphery of the upper frame main body portion 211 near the indoor side, and a door stop piece 213 provided on the outer peripheral surface of the upper frame main body portion 211 on the outdoor side of the outer peripheral portion 212. A weight 25 is provided on the indoor surface of the upper frame main body portion 211.

[0022] Between the upper frame 11 and the upper frame 21, an airtight material s provided on the indoor side surface of the door stop wall 112 of the upper frame 11 abuts against the door stop piece 213 of the upper frame 21 of the shoji 2, and an airtight material s provided on the outdoor side surface of the outer peripheral portion 212 of the upper frame 21 abuts against the hanging wall 113 of the upper frame 11, thereby achieving airtightness.

[0023] As shown in FIG. 4, the lower frame 22 of the shoji 2 includes a lower frame main body portion 221 having a hollow portion, an indoor side glass bay width wall 222 extending to the indoor side inner periphery of the lower frame main body portion 221, and a pressing edge 223 attached to the lower frame main body portion 221. The glass bay width 22a is formed by the indoor side glass bay width wall 222 and the pressing edge 223.

[0024] Between the lower frame 12 and the lower sill 22, an airtight material s provided at the outdoor side end of the door abutting portion 122 of the lower frame 12 abuts against the indoor side surface of the lower sill 22 of the shoji 2, thereby achieving airtightness.

[0025] Since the left and right vertical frames 23 and 24 of the shoji 2 have the same configuration, hereinafter, the right vertical frame 24 will be used for explanation. As shown in Fig. 5(b), the right vertical frame 24 has a right vertical frame main body portion 241 having a hollow portion, an outdoor side wall 242 extending in the outer peripheral direction from the outdoor side end of the right vertical frame main body portion 241, an airtight wall 243 extending in the outer peripheral direction from the outer peripheral surface near the outdoor side of the right vertical frame main body portion 241, a fixing groove 244 for fixing the airtight material mounting member 247, an indoor side glass head wall 245 extending on the indoor side inner periphery, and a pressing edge 246 attached to the outdoor side inner peripheral surface of the right vertical frame main body portion 241. The glass head 24a is formed by the indoor side glass head wall 245 and the pressing edge 246.

[0026] The airtight methods between the right vertical frame 14, the upright 15 and the left and right vertical frames 23 and 24 are different above and below the rotation axis 2a. Specifically, in the portion above the rotation axis 2a, in order for the shoji 2 to approach the opening frame from the indoor side and close, as shown in Figs. 5(a) and 5(b), airtight materials s1 and s1 are provided on the outdoor side walls 142 and 152 of the right vertical frame 14 and the upright 15, and airtight material mounting members 237 and 247 with airtight materials s2 and s2 mounted in the fixing grooves 234 and 244 of the left and right vertical frames 23 and 24 are fixed.

[0027] Then, the airtight material s1 provided on the right vertical frame 14 and the upright 15 abuts against the outdoor sides of the left and right vertical frames 23 and 24, and the airtight materials s2 and s2 provided on the left and right vertical frames 23 and 24 abut against the airtight walls 143 and 153 of the right vertical frame 14 and the upright 15 from the indoor side, thereby making the space between the right vertical frame 14, the upright 15 and the left and right vertical frames 23 and 24 airtight.

[0028] On one side, in the lower part of the pivot shaft 2a, in order for the shoji 2 to approach the opening frame from the outdoor side and close, airtight materials s1, s1 are provided on the outdoor side walls 232, 242 of the left and right vertical frames 23, 24, and airtight material attachment members 237, 247 with airtight materials s2, s2 attached to the fixing grooves 144, 154 of the right vertical frame 14 and the vertical post 15 are fixed.

[0029] Then, the airtight materials s1, s1 provided on the left and right vertical frames 23, 24 abut against the outdoor sides of the right vertical frame 14 and the vertical post 15, and the airtight materials s2, s2 provided on the right vertical frame 14 and the vertical post 15 abut against the airtight walls 233, 243 of the left and right vertical frames 23, 24 from the indoor side, thereby making the space between the right vertical frame 14, the vertical post 15 and the left and right vertical frames 23, 24 airtight.

[0030] (Solar Panel Unit) The solar panel unit 5 mounted on the inner circumference of the frame has, as shown in FIGS. 6 and 7, a support plate 51, a frame member 52 fixed to the outdoor side surface of the support plate 51, a reflection plate 53 held by the frame member 52, a reflection lens 54 disposed on the outdoor side of the reflection plate 53, and a solar panel 55 disposed on the outdoor side of the reflection lens 54.

[0031] As shown in FIGS. 6, 7(b), and 8(a), the solar panel 55 is formed by sandwiching a plurality of cells 551, 551 of the double-sided light-receiving type between transparent plate-like members 552, and has a central portion 55a where the plurality of cells 551, 551 are arranged and a peripheral portion 55b where the cells 551 are not arranged.

[0032] The solar panel 55 of the present embodiment has a total of 24 cells 551 arranged in 4 columns vertically and 6 rows horizontally, and appropriate gaps 55c are provided between the cells 551 as required. The wiring of each cell 551 may, for example, wire all the cells 551 in parallel, or may wire the cells 551 in 4 vertical columns in series to form one group and wire the groups in parallel.

[0033] Note that the number and arrangement of cells 551 of the solar panel 55 are not particularly limited, and all of them may be wired in series.

[0034] As shown in FIGS. 7(a) and 9(b), the reflecting lens 54 is composed of a plurality of convex lenses 54a. The reflecting lens 54 of the present embodiment has a total of 24 convex lenses 54a arranged and fixed in 4 columns vertically and 6 rows horizontally. When the solar panel unit 5 is formed, the cells 551 of the solar panel 55 and the convex lenses 54a of the reflecting lens 54 are arranged so as to face each other.

[0035] Note that the number and arrangement of the convex lenses 54a of the reflecting lens 54 are not particularly limited, and they may not be arranged so that the cells 551 of the solar panel 55 and the convex lenses 54a of the reflecting lens 54 face each other.

[0036] The reflecting plate 53 has a flat portion 531 arranged in parallel with a space from the solar panel 55, and a curved portion 532 formed on the outer periphery of the flat portion 531. The reflecting plate 53 of the present embodiment is formed of a material obtained by vapor-depositing an aluminum film on an FRP resin. As shown in FIGS. 8(b) and 9(a), it is formed of a plate-like central plate 531a that constitutes most of the flat portion 531, edge members 532b arranged on the left, right, top, and bottom of the central plate 531a, and corner members 532a that connect the edge members 532b to each other at the four corners of the central plate 531a.

[0037] The edge members 532b and the corner members 532a are configured such that the outer peripheral portion of the flat portion 531 and the curved portion 532 are integrally formed. The reflecting plate 53 formed by connecting the central plate 531a, the edge members 532b, and the corner members 532a has the curved portion 532 smoothly continuous at the four corners, and the curved portion 532 continuous with the four sides is formed on the reflecting plate 53.

[0038] A hole 53d through which wiring from the solar panel 55 passes is formed at a predetermined position of the curved portion 532. The reflection lens 54 is fixed by adhesion or the like on the flat portion 531 of the reflection plate 53 formed by connecting the central plate 531a, the edge member 532b, and the corner member 532a.

[0039] Note that the reflection plate 53 may be configured such that the entire flat portion 531 is formed by the central plate 531a, or the entire flat portion 531 and the curved portion 532 may be integrally formed.

[0040] The support plate 51 is a rectangular plate-like member, and as shown in FIG. 10, a frame member 52 arranged on the four sides is fixed to the outdoor side surface of the support plate 51. The support plate 51 and the frame member 52 of the present embodiment are made of a metal material such as aluminum.

[0041] As shown in FIGS. 7(b) and 7(c), the frame member 52 has a frame member body 521 that holds the reflection plate 53 of the solar panel 55 and a pressing edge member 522 that is attached to the frame member body 521 and holds the solar panel 55.

[0042] The frame member body 521 has a main body portion 521a fixed to the support plate 51 and an upper wall portion 521b continuous with the upper portion of the main body portion 521a, and an insertion portion 521c for holding the reflection plate 53 is formed by the main body portion 521a and the upper wall portion 521b.

[0043] The pressing edge member 522 has a mounting portion 522a attached to the frame member body 521 and a holding portion 522b for holding the solar panel 55. By fixing the mounting portion 522a to the outer peripheral surface of the main body portion 521a of the frame member body 521 by screwing or the like, a holding groove 522c for holding the edge of the solar panel 55 is formed between the upper wall portion 521b of the frame member body 521 and the holding portion 522b of the pressing edge member 522. A sealing member 523 such as an airtight rubber for making the space between the solar panel 55 airtight is arranged in the holding groove 522c. Note that the space between the holding groove 522c and the solar panel 55 may be made airtight by filling a sealing material.

[0044] As shown in FIG. 11, the assembly of the solar panel unit 5 is carried out by arranging the three-sided frame members 52, 52, 52 on the outdoor side surface of the support plate 51 in a rectangular shape such that the insertion portions 521c are on the inner peripheral side, and fixing them from the back surface of the support plate 51 by fixing means such as screws. The end faces of the frame members 52, 52, 52 are cut at an angle of 45 degrees, and the ends of the frame members 52, 52, 52 are abutted and fixed to each other.

[0045] A reflection plate 53 to which a reflection lens 54 is fixed is inserted into the insertion portions 521c of the frame members 52, 52, 52 from the open side of the three-sided frame members 52, 52, 52 fixed to one surface of the support plate 51. After that, as shown in FIG. 12, the solar panel 55 is inserted into the holding grooves 522c of the frame members 52, 52, 52 from the open side of the three-sided frame members 52, 52, 52.

[0046] After the reflection plate 53 and the solar panel 55 are completely inserted into the three-sided frame members 52, 52, 52, the frame member 52 is attached to the open side to complete the assembly of the solar panel unit 5. Note that the assembly method of the solar panel unit 5 is not limited to the above method.

[0047] As shown in FIG. 5, the assembled solar panel unit 5 is erected from the indoor side with respect to the frame body framed on all four sides, and the shoji 2 equipped with the solar panel unit 5 is formed by fixing it to the frame body from the back surface of the support plate 51 by fixing means such as screws. At this time, the solar panel unit 5 can be stably attached by inserting a synthetic resin spacer 9 into the glass clear openings 21a, 22a, 23a, 24a of each frame member 21, 22, 23, 24.

[0048] The solar panel unit 5 attached to the shoji 2 generates electricity when sunlight L hits its outdoor side surface. However, as shown in Fig. 13(a), among the sunlight L hitting the solar panel unit 5, the sunlight L1 hitting the peripheral portion 55b of the solar panel 55 passes through the peripheral portion 55b and is reflected by the curved portion 532 of the reflection plate 53 and guided to the back side of the solar panel 55. Also, the sunlight L2 and L3 hitting the gaps 55c between the cells 551 of the solar panel 55 pass through the gaps 55c and are guided to the back side of the solar panel 55.

[0049] The sunlight L1, L2, and L3 guided to the back of the solar panel 55 hit the reflection lens 54 arranged on the flat portion 531 of the reflection plate 53 and are diffusely reflected, hitting the back of the solar panel 55 evenly.

[0050] In this way, by evenly illuminating the back of the solar panel 55 with light, it is possible to prevent the occurrence of leakage from the non-illuminated portions, contributing to an improvement in the power generation rate. Also, when forming a module by connecting several cells 551 of the solar panel 55 in series, etc., by evenly illuminating the back of each cell 551 with light, it is possible to suppress the difference in the current values output by each cell 551 and prevent a decrease in the current value of the cell 551 that limits the output current of the module, and increase the output current of the entire module.

[0051] And in the solar panel unit 5 of this embodiment, since the reflection lens 54 is formed by the convex lens 54a, as shown in Fig. 14(a), among the sunlight L1, L4, and L5 hitting the peripheral portion 55b of the solar panel 55, the sunlight L5 that is reflected by the curved portion 532 of the reflection plate 53 and travels relatively parallel to the solar panel 55 can also be applied to the convex lens 54a and guided to the back side of the solar panel 55.

[0052] That is, the solar panel unit 5 of the embodiment adopting the convex lens 54a can prevent the sunlight L5, which was reflected on the back surface of the solar panel 55 in the embodiment adopting glass or the like as the reflecting lens 54 shown in FIG. 14(b), from passing over the reflecting lens 54 and escaping outside from the peripheral portion 55b on the opposite side, and can apply more sunlight to the cells 551 of the solar panel 55.

[0053] -Other Embodiments- The solar panel unit 5 may be configured to introduce part of the sunlight taken in on the back surface of the solar panel 55 into the room. For example, as shown in FIG. 13(b), the solar panel unit 5 of the present embodiment forms the central plate 531a that constitutes most of the flat portion 531 of the reflecting plate 53 with a transparent acrylic cast plate, and forms the support plate 51 by attaching a magic mirror film 51b with a reflectance of 49% and a light transmittance of 18% to the transparent acrylic plate 51a.

[0054] By forming a light transmission portion that transmits a certain amount of light on the flat portion 531 of the reflecting plate 53 and the support plate 51, the sunlight (for example, sunlight L1) taken in from the peripheral portion 55b of the solar panel unit 5 to the back surface of the solar panel 55 and the light (for example, sunlight L2, L3) that has entered the back surface of the solar panel 55 from the gap 55c of the cells 551 of the solar panel 55 hit the reflecting lens 54 arranged on the flat portion 531 of the reflecting plate 53 and are diffusely reflected, hitting the back surface of the solar panel 55 evenly, and a part of the light L1a, L2a, L3a passes through the light transmission portion and is taken into the room.

[0055] As described above, in the solar panel unit of the present embodiment, by forming a light transmission portion on the reflecting plate 53 of the solar panel unit 5, part of the sunlight can be taken into the room even when the natural ventilation window is in a closed state, and a natural ventilation window with excellent design can be formed.

[0056] Note that the reflectance and light transmittance of the light transmission part provided in the solar panel unit 5 may be appropriately set based on the required power and the degree of light introduction into the room. Also, the configuration of the light transmission part is not limited to the above configuration. For example, the support plate 51 may be formed of a transparent acrylic plate, and a magic mirror film may be attached to the central plate 531a of the reflection plate 53 to form it with a transparent acrylic plate. Further, the configuration of the light transmission part is not limited to the combination of a transparent acrylic cast plate and a magic mirror film.

[0057] Furthermore, depending on the required degree of light introduction into the room, the amount of light introduced into the room may be adjusted by actively providing a gap 55c between the cells 551, 551 that make up the solar panel 55.

[0058] As described above, in the natural ventilation window of this embodiment, the shoji 2 naturally opens and closes by the wind force, and without the need for electrical power, the window formed at a high position in the room can be opened and closed for ventilation. Also, in the natural ventilation window of this embodiment, in bad weather, based on the output information of the wind speed sensor 81, the rainfall sensor 82, etc., the opening and closing arm 4 can be rotated to forcibly close the window or limit the opening and closing angle.

[0059] Furthermore, in the natural ventilation window of this embodiment, since the solar panel unit 5 is arranged on the shoji 2, it can generate electricity by the sunlight hitting the shoji 2, and the electricity generated can supply the power to drive the drive motor 85 of the opening and closing arm 4. Therefore, while suppressing the use of the commercial power supply 86, a natural ventilation window capable of performing forced closing control in bad weather can be provided, and the excess power can be stored and used as needed.

[0060] Moreover, the solar panel unit 5 of this embodiment employs a double-sided light-receiving type cell as the cell disposed on the solar panel 55, and a reflection plate 53 is disposed on the back side (indoor side) of the solar panel 55. Therefore, sunlight hitting the peripheral portions or gaps of the solar panel 55 can be guided to the back surface of the solar panel 55 and applied to the back surface of the cell, enabling acquisition of more light energy.

[0061] As a result, the solar panel unit 5 of this embodiment can have a relatively wide gap formed between a plurality of cells 551 of the same size, increasing the degree of freedom in arranging the plurality of cells, facilitating wiring construction, etc., and improving workability.

[0062] In addition, the solar panel unit of this embodiment can make the amount of light hitting the back side of the cell uniform by disposing a reflection lens 54 composed of a convex lens 54a on the reflection plate 53, preventing occurrence of leakage, etc. from cell portions not hit by light, and improving the power generation efficiency.

[0063] Furthermore, by forming a light transmission portion on the reflection plate and the support plate disposed on the back side of the solar panel 55, a part of the sunlight hitting the solar panel unit 5 can be taken into the room to improve the design property.

[0064] It should be noted that the power generated by the solar panel unit of the above embodiment may be used for any purpose, and it goes without saying that the drive motor 85 for driving the opening / closing arm 4 may be driven by the power from the commercial power supply 86. In addition, the above embodiments do not limit the invention described in the claims and are of course treated as examples.

Explanation of Reference Numerals

[0065] 5: Solar panel unit 51: Support plate 52: Frame member 53: Reflection plate 531: Flat part 531a: Central plate 531b: Transparent acrylic cast plate 531c: Magic mirror film 532: Curved part 532a: Corner member 532b: Edge member 54: Reflective lens 54a: Convex lens 55: Solar panel 55a: Central part 55b: Peripheral part 55c: Gap 551: Cell L: Sunlight L1 - L5: Sunlight

Claims

1. A solar panel unit comprising: a solar panel; a reflecting plate having a flat portion disposed in parallel with and spaced apart from the solar panel; and a reflecting lens disposed on the solar panel side of the flat portion of the reflecting plate. The solar panel has a central portion formed by sandwiching a plurality of cells of a double-sided light-receiving type, each spaced apart by a predetermined interval, with a transparent member, and a peripheral portion where no cells are disposed. The reflecting plate has a light-transmitting portion that transmits a certain amount of light hitting the solar panel to the indoor side. The reflecting lens is a convex lens disposed on the solar panel side of the flat portion. A solar panel unit.

2. A building member comprising the solar panel unit according to Claim 1.

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