Roller screen device

Abstract

To suitably extract the electric power generated by a solar cell to the outside while avoiding the situation where wiring cables become tangled.SOLUTION: A roll screen device 10 includes a screen unit 12 and a winding mechanism 19. The screen unit 12 includes a solar battery cell, a first positive electrode wiring cable 35, and a first negative electrode wiring cable 36. The winding mechanism 19 includes a rotary shaft 40, a winding drum 41 which is rotatable about the rotary shaft 40 and to which an upper end 12a of the screen unit 12 is fixed, a conductive tubular body 44 fixed to the rotary shaft 40, a positive conductive rotor 45 and a negative conductive rotor 46 which rotate about the rotary shaft together with the take-up drum 41 while contacting the outer peripheral surface of a conductive tubular body 44 and which are electrically connected to the first positive electrode wiring cable 35 and the first negative electrode wiring cable 36, and a second positive cable 48 and a second negative cable 49 which are electrically connected to the inner peripheral surface of the conductive tubular body 44.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a roll screen device provided with a solar cell.

Background Art

[0002] Conventionally, a roll screen device provided with solar cells in a screen portion is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a roll screen device, a method for extracting the electric power generated by the solar cells to the outside becomes an issue. In the case of the method of pulling out the wiring cable from the lower end portion of the screen portion, the structure becomes simple, but since the wiring cable also moves up and down together with the vertical movement of the screen portion, the processing of the wiring cable is not easy.

[0005] On the other hand, in the case of the method of pulling out the wiring cable from the upper end portion of the screen portion, since the screen is wound up by the winding mechanism at the upper end portion, the vertical movement of the wiring cable does not occur. However, in this case, since the wiring cable rotates and moves together with the winding of the screen portion, the wiring cable is likely to become entangled or damaged, and there is a problem that the wiring makes a rattling sound when it hits the inner wall of the moving shaft.

[0006] This disclosure is made in view of these issues, and its purpose is to provide a technology that can suitably extract power generated by solar cells to the outside while avoiding situations such as wiring cables becoming entangled in a roll screen device (including winding devices such as shutters) equipped with solar cells. [Means for solving the problem]

[0007] To solve the above problems, a roll screen device according to one embodiment of the present disclosure comprises a screen portion configured in the shape of a sheet and a winding mechanism for winding up the screen portion. The screen portion comprises a solar cell and a first wiring cable drawn out from the upper end of the screen portion for extracting power generated by the solar cell. The winding mechanism comprises a rotating shaft, a winding drum rotatable around the rotating shaft and to which the upper end of the screen portion is fixed, a conductive cylindrical body fixed to the rotating shaft, a conductive member which is in contact with the circumferential surface of the conductive cylindrical body and rotates together with the winding drum, and to which the first wiring cable is electrically connected, and a second wiring cable which is electrically connected to the conductive cylindrical body. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic front view of a roller screen device according to the first embodiment. [Figure 2] This is a schematic horizontal cross-sectional view of a roller screen device according to the first embodiment. [Figure 3] This is a schematic cross-sectional view illustrating the configuration of the winding mechanism. [Figure 4] Figures 4(a) to 4(c) are diagrams illustrating the operation of the winding mechanism. [Figure 5] This is a schematic cross-sectional view illustrating the configuration of a modified winding mechanism. [Figure 6] This diagram illustrates the method of routing wiring cables within a winding drum. [Modes for carrying out the invention]

[0009] The present invention will be described below with reference to the drawings, based on preferred embodiments. The following configurations are illustrative for the purpose of understanding the present disclosure, and the scope of the present disclosure is defined solely by the appended claims. Identical or equivalent components and members shown in each drawing are denoted by the same reference numerals, and redundant descriptions are omitted where appropriate. In addition, the dimensions of members in each drawing are shown enlarged or reduced as appropriate for ease of understanding. Furthermore, some members that are not important for explaining the embodiments are omitted in each drawing.

[0010] (First Embodiment) Figure 1 is a schematic front view of a roller screen device 10 according to the first embodiment. The roller screen device 10 is used by being installed in an opening in a building.

[0011] The roller screen device 10 comprises a screen section 12, a holding section 14 for suspending and holding the screen section 12, and a pair of guide rails 16 and 17 for guiding the raising and lowering of the screen section 12.

[0012] The screen section 12 is made up of a flexible rectangular sheet-like body. The upper end of the screen section 12 in the longitudinal direction is connected to the winding mechanism 19 in the holding section 14, and a bottom rail 18 is provided at the lower end. The bottom rail 18 applies force in a direction that pulls the screen section 12 downward and also applies tension to the screen section 12 to improve its flatness.

[0013] The screen section 12 incorporates multiple solar cells 20. In the example shown in Figure 1, multiple rectangular solar cells 20 are arranged in a vertical (height) direction, but the size, shape, and arrangement method of the solar cells 20 are not particularly limited, and any size, shape, and arrangement is possible. For example, multiple square solar cells 20 in plan view may be arranged in a matrix across the entire screen section 12. Generally, matrix arrangements are frequently used in crystalline silicon solar cells. The solar cells 20 are configured to convert light energy into electricity using the photovoltaic effect. The layer structure of the screen section 12 will be described later.

[0014] Each solar cell 20 has positive and negative extraction electrodes 31 and 32 formed thereon. The positive extraction electrodes 31 formed on each solar cell 20 are connected to each other by positive electrode wiring 33. Similarly, the negative extraction electrodes 32 formed on each solar cell 20 are connected to each other by negative electrode wiring 34. Multiple solar cells 20 are connected to each other in this way by positive electrode wiring 33 and negative electrode wiring 34. The positive electrode wiring 33 and negative electrode wiring 34 are led out of the screen section 12 at the upper end of the screen section 12 by a first positive electrode wiring cable 35 and a first negative electrode wiring cable 36, respectively. The first positive electrode wiring cable 35 and the first negative electrode wiring cable 36 are collectively called the "first wiring cable". The wiring configuration can be in series or parallel, and is not limited to this configuration.

[0015] The holding unit 14 includes a winding mechanism 19 for winding up the screen unit 12 and a case 15 for housing the winding mechanism 19. The screen unit 12 can be raised and lowered using known methods such as a pull cord or chain. Alternatively, an electric motor may be installed inside the case 15 to provide an electric operation. Details of the winding mechanism 19 will be described later.

[0016] The guide rails 16 and 17 are positioned at both the left and right ends of the screen section 12 and are configured to clamp the ends of the screen section 12.

[0017] In addition, the screen portion 12 incorporating the solar cell 20 has a property that wrinkles and uneven surfaces are likely to occur as compared with a fabric screen that does not incorporate a solar cell. By providing the guide rails 16 and 17, wrinkles and uneven surfaces of the screen portion 12 can be reduced. The gap between the guide rail and the roll screen may be filled with mohair or the like.

[0018] FIG. 2 is a schematic horizontal cross-sectional view of the roll screen device 10 according to the first embodiment. The screen portion 12 includes the solar cell 20, a light-receiving surface side sealing layer 24 formed on the light-receiving surface (also referred to as a power generation surface or a front surface) 20a of the solar cell 20, a back surface side sealing layer 26 formed on the back surface (also referred to as a non-light-receiving surface) 20b of the solar cell 20, a light-receiving surface side coating layer 28 formed on the light-receiving surface side sealing layer 24, and a back surface side coating layer 30 formed on the back surface side sealing layer 26. The roll screen device 10 is attached to an opening of a building such that the light-receiving surface of the solar cell 20 faces the outdoor side and the back surface of the solar cell 20 faces the indoor side. The thickness of the screen portion 12 may be, for example, 0.5 mm to 2.0 mm.

[0019] The solar cell 20 includes, for example, a polyimide substrate 21, a thin film silicon 22 formed on the polyimide substrate 21, and a transparent conductive film (ITO) 23 formed on the thin film silicon 22. The solar cell is not limited to thin film silicon and may be an organic thin film, dye-sensitized, perovskite, CIGS, CIS, or a tandem structure thereof.

[0020] The light-receiving surface side sealing layer 24 is provided so as to cover the light-receiving surface 20a of the solar cell 20. In addition, the back surface side sealing layer 26 is provided so as to cover the back surface 20b of the solar cell 20. As the material of the sealing layer, an olefin-based elastomer (TPO) can be used.

[0021] The backside covering layer 30 is provided so as to cover the backside sealing layer 26. The backside covering layer 30 may be formed of fibers and plastics (synthetic resins) such as polypropylene, polyethylene, and polyester. In order to give the backside covering layer 30 light-shielding properties, for example, a colored and opaque resin may be used. Alternatively, a separate light-shielding layer may be provided on the backside covering layer 30.

[0022] The light-receiving surface side covering layer 28 is provided so as to cover the light-receiving surface side sealing layer 24. The light-receiving surface side covering layer 28 may be formed of a transparent or semi-transparent resin such as ETFE (Ethylene Tetra Fluoro Ethylene). Alternatively, the light-receiving surface side covering layer 28 may be formed of a colored resin for the purpose of improving designability, or may be printed with a design pattern or subjected to embossing. Also, for improving designability, the light-receiving surface side sealing layer 24 itself may be printed with a color, semi-transparency, or a design pattern.

[0023] As described above, in the roller screen device 10 according to the first embodiment, the left end 28a and the right end 28b of the screen part 12 are sandwiched by the guide rails 16 and 17. By adopting such a configuration, light leakage and heat leakage from the side of the screen part 12 can be prevented, so that the light-shielding performance, heat-shielding performance, and heat-insulating performance can be improved. Also, an effect of suppressing wrinkles of the screen part 12 can be expected.

[0024] FIG. 3 is a schematic cross-sectional view for explaining the configuration of the winding mechanism 19. The winding mechanism 19 includes a rotating shaft 40, a winding drum 41, a tubular motor 42, and a drive transmission part 43.

[0025] The rotating shaft 40 is a hollow rod-shaped body and is fixed to the left side portion 15a of the case 15. The rotating shaft 40 is made of an insulating material or a material that has been treated to provide insulation. The winding drum 41 is a hollow cylindrical body and is rotatably positioned around the rotating shaft 40. The tubular motor 42 comprises a stator 42a and a tubular rotor 42b that rotates relative to the stator 42a. The stator 42a is fixed to the right side portion 15b of the case 15. The rotor 42b is inserted into the winding drum 41. The rotor 42b is connected to the winding drum 41 via a drive transmission unit 43. When the rotor 42b rotates due to the supply of power, the rotational force is transmitted to the winding drum 41 via the drive transmission unit 43, causing the winding drum 41 to rotate around the rotating shaft 40.

[0026] The upper end portion 12a of the screen portion 12 is fixed to the outer circumferential surface of the winding drum 41. When the winding drum 41 rotates, the screen portion 12 is wound onto the outer circumferential surface of the winding drum 41, and the screen portion 12 can be stored inside the case 15.

[0027] In this embodiment, the winding mechanism 19 further comprises a conductive cylindrical body 44, a conductive rotating body 45 for the positive electrode, a conductive rotating body 46 for the negative electrode, a support member 47, a second positive electrode wiring cable 48, and a second negative electrode wiring cable 49. The second positive electrode wiring cable 48 and the second negative electrode wiring cable 49 are collectively referred to as the "second wiring cable."

[0028] The conductive cylindrical body 44 is a cylindrical body with a circular cross-section perpendicular to its longitudinal direction, mainly formed of a conductive metal such as copper, copper alloy, or aluminum, aluminum alloy, or formed of resin or the like with a conductive metal coating such as gold applied to the power extraction portion. The conductive cylindrical body 44 is arranged coaxially with the rotating shaft 40 and surrounding the rotating shaft 40. The conductive cylindrical body 44 is fixed to the rotating shaft 40 by an insulating fixing member 50. In other words, this conductive cylindrical body 44 is fixed to the case 15 and does not rotate together with the winding drum 41.

[0029] The conductive cylindrical body 44 consists of a positive electrode cylindrical portion 44a, a negative electrode cylindrical portion 44b, and an insulating cylindrical portion 44c formed between the positive electrode cylindrical portion 44a and the negative electrode cylindrical portion 44b. The insulating cylindrical portion 44c insulates the positive electrode cylindrical portion 44a and the negative electrode cylindrical portion 44b. The positive electrode cylindrical portion 44a, the negative electrode cylindrical portion 44b, and the insulating cylindrical portion 44c may be formed integrally or combined.

[0030] The support member 47 is fixed to the left end of the winding drum 41 and pivotally supports the winding drum 41 so that it can rotate with respect to the rotation shaft 40. This support member 47 rotates together with the winding drum 41. The support member 47 is made of an insulating material or a material that has been treated to be insulating.

[0031] The positive electrode conductive rotating body 45 and the negative electrode conductive rotating body 46 are substantially disc-shaped rotating bodies mainly made of conductive metals such as copper-copper alloys and aluminum-aluminum alloys. The positive electrode conductive rotating body 45 is rotatably supported on a rotating shaft 51 provided on a support member 47 so as to contact the positive electrode cylindrical portion 44a of the conductive cylindrical body 44. Similarly, the negative electrode conductive rotating body 46 is rotatably supported on a rotating shaft 52 provided on a support member 47 so as to contact the negative electrode cylindrical portion 44b of the conductive cylindrical body 44.

[0032] When the winding drum 41 rotates, the conductive rotating body 45 for the positive electrode rotates around the rotation axis 40 together with the winding drum 41, while rotating on the outer surface of the cylindrical portion 44a for the positive electrode. Similarly, when the winding drum 41 rotates, the conductive rotating body 46 for the negative electrode rotates around the rotation axis 40 together with the winding drum 41, while rotating on the outer surface of the cylindrical portion 44b for the negative electrode.

[0033] As described above, in this embodiment, a first positive electrode wiring cable 35 and a first negative electrode wiring cable 36 are drawn out from the upper end portion 12a of the screen portion 12. The first positive electrode wiring cable 35 is electrically connected to the positive electrode conductive rotating body 45 through a through hole formed in the support member 47. Similarly, the first negative electrode wiring cable 36 is electrically connected to the negative electrode conductive rotating body 46 through a through hole formed in the support member 47. All of these cables are covered and their insulation is maintained.

[0034] The second positive electrode wiring cable 48 is electrically connected to the inner circumferential surface of the positive electrode cylindrical portion 44a. Similarly, the second negative electrode wiring cable 49 is electrically connected to the inner circumferential surface of the negative electrode cylindrical portion 44b. As shown in Figure 3, the second positive electrode wiring cable 48 and the second negative electrode wiring cable 49 are inserted into the hollow rotating shaft 40 through through holes formed in the rotating shaft 40 and are pulled out to the outside of the winding mechanism 19 through the inside of the rotating shaft 40.

[0035] In the winding mechanism 19 configured as described above, the first positive electrode wiring cable 35 is electrically connected to the second positive electrode wiring cable 48 via the positive electrode conductive rotating body 45 and the positive electrode cylindrical portion 44a. Similarly, the first negative electrode wiring cable 36 is electrically connected to the second negative electrode wiring cable 49 via the negative electrode conductive rotating body 46 and the negative electrode cylindrical portion 44b.

[0036] Figures 4(a) to 4(c) are diagrams illustrating the operation of the winding mechanism 19. Figures 4(a) to 4(c) are schematic diagrams of the winding mechanism 19 viewed from the axial direction. In Figures 4(a) to 4(c), only the conductive rotating body 46 for the negative electrode is shown for simplicity of explanation, and the operation of the negative electrode side will be mainly described below.

[0037] Figure 4(a) shows the state of the screen section 12 before winding begins. The first negative electrode wiring cable 36 drawn out from the screen section 12 is connected to the negative electrode conductive rotating body 46, which is in contact with the outer surface of the negative electrode cylindrical section 44b, and the second negative electrode wiring cable 49 is connected to the inner surface of the negative electrode cylindrical section 44b. Therefore, the first negative electrode wiring cable 36 and the second negative electrode wiring cable 49 are electrically connected, and the power generated by the solar cell provided in the screen section 12 is extracted by the second negative electrode wiring cable 49.

[0038] Figure 4(b) shows the state of the screen section 12 immediately after winding begins. Figure 4(c) shows the state of the screen section 12 as winding progresses. When the tubular motor 42 is driven, the winding drum 41 rotates and the screen section 12 is wound onto the winding drum 41. As the winding drum 41 rotates, the negative electrode conductive rotating body 46 also rotates around the rotation axis 40. At this time, the negative electrode conductive rotating body 46 rotates on its outer circumferential surface. Since the negative electrode conductive rotating body 46 is always in contact with the outer circumferential surface of the negative electrode cylindrical section 44b, the conductivity between the first negative electrode wiring cable 36 and the second negative electrode wiring cable 49 is maintained. Furthermore, since the first negative electrode wiring cable 36 and the second negative electrode wiring cable 49 are physically separated, even if the first negative electrode wiring cable 36 rotates around the rotation axis 40 together with the winding drum 41, the second negative electrode wiring cable 49 remains unaffected and stationary.

[0039] The same operation applies to the positive electrode side. In the conductive cylindrical body 44, the positive electrode cylindrical portion 44a and the negative electrode cylindrical portion 44b are insulated by the insulating cylindrical portion 44c, thus preventing a short circuit between the positive and negative electrodes.

[0040] Thus, in the winding mechanism 19 according to this embodiment, even when the first wiring cable (first positive electrode wiring cable 35, first negative electrode wiring cable 36) rotates around the rotation axis 40 together with the winding drum 41, the second wiring cable (second positive electrode wiring cable 48, second negative electrode wiring cable 49) remains stationary. Furthermore, the conductivity between the first and second wiring cables is always maintained. Therefore, according to the winding mechanism 19 according to this embodiment, the electrodes generated in the solar cell can be suitably extracted while avoiding situations such as the wiring cables becoming entangled as the screen portion 12 is wound up.

[0041] Furthermore, in the winding mechanism 19 according to this embodiment, the second positive electrode wiring cable 48 and the second negative electrode wiring cable 49 are routed through the inside of the rotating shaft 40 to the outside of the winding mechanism 19, making it easier to route the wiring cables.

[0042] In the above-described embodiment, the conductive rotating body is configured to rotate on the outer circumferential surface of the cylindrical portion, but the conductive rotating body may also be configured to rotate on the inner circumferential surface of the cylindrical portion. Furthermore, in the above-described embodiment, the second wiring cable is connected to the inner circumferential surface of the cylindrical portion, but the connection position of the second wiring cable to the cylindrical portion is not particularly limited as long as an electrical connection is ensured and it does not interfere with the rotating components.

[0043] Figure 5 is a schematic cross-sectional view illustrating the configuration of a modified winding mechanism. The winding mechanism 59 shown in Figure 5 differs from the winding mechanism 19 shown in Figure 3 in that it includes a conductive sliding body 55 for the positive electrode and a conductive sliding body 56 for the negative electrode, instead of a conductive rotating body 45 for the positive electrode and a conductive rotating body 46 for the negative electrode.

[0044] The conductive sliding body 55 for the positive electrode and the conductive sliding body 56 for the negative electrode are, for example, an electrically sliding contact mechanism for electrical conductivity between a stationary object and a moving object, and may be, for example, a sliding brush or a sliding sheet. The conductive sliding body 55 for the positive electrode is supported by a support portion 61 so as to slide on the outer circumferential surface of the cylindrical portion 44a for the positive electrode. The conductive sliding body 56 for the negative electrode is supported by a support portion 62 so as to slide on the outer circumferential surface of the cylindrical portion 44b for the negative electrode. The conductive sliding body 55 for the positive electrode is electrically connected to the first positive electrode wiring cable 35, and the conductive sliding body 56 for the negative electrode is electrically connected to the first negative electrode wiring cable 36. It is also possible to omit the support portions 61 and 62 by providing a sliding function to the ends of the first positive electrode wiring cable 35 and the first negative electrode wiring cable 36.

[0045] In the winding mechanism 59 according to this modified example, the first wiring cable (first positive electrode wiring cable 35, first negative electrode wiring cable 36) and the second wiring cable (second positive electrode wiring cable 48, second negative electrode wiring cable 49) are electrically connected but physically separated. Therefore, similar to the winding mechanism 19 described above, it is possible to suitably extract the electrodes generated in the solar cell while avoiding situations such as the wiring cables becoming entangled as the screen portion 12 is wound up.

[0046] In the above modified example, the conductive sliding body is configured to slide on the outer circumferential surface of the cylindrical portion, but it may also be configured to slide on the inner circumferential surface of the cylindrical portion. Furthermore, in this modified example, the second wiring cable is connected to the inner circumferential surface of the cylindrical portion, but the connection position of the second wiring cable to the cylindrical portion is not particularly limited as long as an electrical connection is ensured and it does not interfere with the rotating components.

[0047] Figure 6 is a diagram illustrating the method of routing wiring cables within a winding drum 41. In the winding mechanism 19 shown in Figure 6, the rotating shaft 40 is fixed to an end bracket 60. The end bracket 60 has a hole in its center, through which the second positive electrode wiring cable 48 and the second negative electrode wiring cable 49, which pass through the inside of the rotating shaft 40, can be pulled out to the outside. The end bracket 60 is attached to the upper frame 72 via an end bracket support fitting 70. An end cover 74 may be provided to cover the end bracket support fitting 70.

[0048] The support member 47 is fixed to the inner wall of the winding drum 41 and rotatably supports the winding drum 41 with respect to the rotation shaft 40. The support member 47 rotates together with the winding drum 41. The internal configuration of the support member 47 is the same as that of the embodiment shown in Figure 3.

[0049] In this embodiment as well, as shown in Figure 6, the first positive electrode wiring cable 35 and the first negative electrode wiring cable 36 are drawn out from the upper end of the screen section 12. The first positive electrode wiring cable 35 and the first negative electrode wiring cable 36 are pulled into the winding drum 41 through through holes formed in the winding drum 41.

[0050] The winding mechanism 19 according to the embodiment shown in Figure 6 differs from the embodiment shown in Figure 3 in that a positive electrode connector 64, a negative electrode connector 65, and a connector holder 68 are arranged inside the winding drum 41. The positive electrode connector 64 and the negative electrode connector 65 are held by the connector holder 68. The connector holder 68 is fixed to the inner wall of the winding drum 41.

[0051] In the winding mechanism 19 according to this embodiment, the first positive electrode wiring cable 35 is connected to the positive electrode connector 64. One end of the third positive electrode wiring cable 66 is connected to this positive electrode connector 64. The first positive electrode wiring cable 35 and the third positive electrode wiring cable 66 are electrically connected by the positive electrode connector 64. The other end of the third positive electrode wiring cable 66 is electrically connected to the positive electrode conductive rotating body 45. Therefore, in this embodiment, the first positive electrode wiring cable 35 is electrically connected to the positive electrode conductive rotating body 45 via the positive electrode connector 64 and the third positive electrode wiring cable 66. The positive electrode conductive rotating body 45 is electrically connected to the second positive electrode wiring cable 48 via the positive electrode cylindrical portion 44a.

[0052] Furthermore, the first negative electrode wiring cable 36 is connected to the negative electrode connector 65. One end of the third negative electrode wiring cable 67 is connected to this negative electrode connector 65. The first negative electrode wiring cable 36 and the third negative electrode wiring cable 67 are electrically connected by the negative electrode connector 65. The other end of the third negative electrode wiring cable 67 is electrically connected to the negative electrode conductive rotating body 46. Therefore, in this embodiment, the first negative electrode wiring cable 36 is electrically connected to the negative electrode conductive rotating body 46 via the negative electrode connector 65 and the third negative electrode wiring cable 67. The negative electrode conductive rotating body 46 is electrically connected to the second negative electrode wiring cable 49 via the negative electrode cylindrical portion 44b.

[0053] Next, the assembly method of the winding mechanism 19 shown in Figure 6 will be described. First, outside the winding drum 41, the first positive electrode wiring cable 35 and the third positive electrode wiring cable 66 are connected to the positive electrode connector 64. The other end of the third positive electrode wiring cable 66 is connected to the positive electrode conductive rotating body 45. Similarly, the first negative electrode wiring cable 36 and the third negative electrode wiring cable 67 are connected to the negative electrode connector 65. The other end of the third negative electrode wiring cable 67 is connected to the negative electrode conductive rotating body 46.

[0054] Next, the positive terminal connector 64 and the negative terminal connector 65 are held by the connector holder 68, the connector holder 68 is inserted into the winding drum 41, and fixed to the inner wall of the winding drum 41 in a predetermined position.

[0055] Next, the support member 47 and the components assembled to the support member 47 (such as the rotating shaft 40) are inserted into the winding drum 41, and the support member 47 is fixed to the inner wall of the winding drum 41.

[0056] Finally, the end bracket 60 is inserted onto the rotating shaft 40, completing the assembly of the winding mechanism 19. The assembled winding mechanism 19 is attached to the frame 72 by the end bracket support fitting 70. At the end of the winding drum 41 opposite to the support member 47, the stator 42a of the tubular motor 42 is attached to the end bracket 60 fixed to the winding drum 41, and is attached to the frame 72 by the end bracket support fitting 70. In this way, the winding mechanism 19 is fixed to the frame 72.

[0057] Thus, according to the winding mechanism 19 of this embodiment, by employing a positive terminal connector 64, a negative terminal connector 65, and a connector holder 68, the routing of the wiring cable becomes easier, and the assembly of the winding mechanism 19 can be performed smoothly. ru.

[0058] Furthermore, since the positive terminal connector 64 and the negative terminal connector 65 are held by the connector holder 68, the movement of the wiring cable when the winding drum 41 rotates is suppressed. This suppresses the generation of noise associated with the movement of the wiring cable and prevents the wiring cable from breaking.

[0059] In the above example, this cable routing method was applied to the winding mechanism 19 shown in Figure 3, but it is also possible to apply this cable routing method to the winding mechanism 59 shown in Figure 5.

[0060] The present invention has been described above based on embodiments. These embodiments are illustrative, and it will be understood by those skilled in the art that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes are also within the scope of the claims of the present invention. Accordingly, the descriptions and drawings herein should be treated as illustrative rather than limiting. [Explanation of Symbols]

[0061] 10 Roll screen device, 12 Screen section, 14 Holding section, 15 Case, 16 Guide rail, 19, 59 Winding mechanism, 20 Solar cell, 35 Wiring cable for first positive electrode, 36 Wiring cable for first negative electrode, 40 Rotating shaft, 41 Winding drum, 42 Tubular motor, 43 Drive transmission section, 44 Conductive cylindrical body, 45 Conductive rotating body for positive electrode, 46 Conductive rotating body for negative electrode, 47 Support member, 48 Wiring cable for second positive electrode, 49 Wiring cable for second negative electrode, 55 Conductive sliding body for positive electrode, 56 Conductive sliding body for negative electrode, 60 End bracket, 64 Connector for positive electrode, 65 Connector for negative electrode, 66 Wiring cable for third positive electrode, 67 Wiring cable for third negative electrode, 68 Connector holder.

Claims

1. A roll screen device comprising a screen portion configured in a sheet shape and a winding mechanism for winding up the screen portion, The aforementioned screen section is Solar cells and A first wiring cable for extracting power generated by the solar cell is drawn out from the upper end of the screen section, Equipped with, The aforementioned winding mechanism is The axis of rotation and A winding drum that is rotatable around the aforementioned rotation axis and to which the upper end of the screen portion is fixed, A conductive cylindrical body fixed to the aforementioned rotating shaft, A conductive member that rotates together with the winding drum around the rotation axis while in contact with the circumferential surface of the conductive cylindrical body, wherein the conductive member to which the first wiring cable is electrically connected, A second wiring cable electrically connected to the conductive cylindrical body, Equipped with, The aforementioned conductive member is a conductive rotating body arranged to rotate on the circumferential surface of the conductive cylindrical body, in a roller screen device.

2. The roller screen device according to claim 1, wherein the second wiring cable passes through the inside of the rotating shaft and is drawn out to the outside of the winding mechanism.

3. The connector to which the first wiring cable is connected, A third wiring cable connected to the aforementioned connector, Furthermore, The roller screen device according to claim 1 or 2, wherein the first wiring cable is electrically connected to the conductive member via the connector and the third wiring cable.

4. The connector holder further comprises the connector holder for holding the aforementioned connector, The roller screen device according to claim 3, wherein the connector holder is fixed inside the winding drum.

5. The roll screen device according to any one of claims 1 to 4, wherein the winding mechanism further comprises a tubular motor for rotating the winding drum around the rotation axis.

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