Roll-up screen device

Abstract

Roll-up screen device (10, 40) which can be arranged or is arranged at an opening of a building, comprising: a screen part (14) formed into an arc shape; a solar cell (28) located in the screen part (14); a holding part (17) which suspends and holds the umbrella part (14); a frame (15, 16) arranged on one side of the screen part (14); and a charging and discharging control board (23) housed inside the frame (15, 16) and configured to control the charging and discharging of the electrical energy generated in the solar cell (28).

Description

[0001] The present invention relates to a roll-up screen device comprising a solar cell.

[0002] A roll-up screen device is known from the prior art in which a solar cell is provided in a screen part (see, for example, JP 2011-179193). However, how the generated energy can be utilized is not disclosed in this roll-up screen device with a conventional power generation function.

[0003] The present disclosure addresses the problem described above, and an object thereof is to provide a technology that enables effective use of generated energy in roll-up screen devices with solar cells.

[0004] To solve the above problem, a roll-up screen device having the features of claim 1 is provided. Further embodiments are recited in the dependent claims.

[0005] To solve the above problem, a roll-up screen device according to an embodiment of the present invention is a roll-up screen device disposed at an opening of a building, comprising: a screen member formed into an arc shape; a solar cell provided in the screen member; a holding member that suspends and holds the screen member; a frame disposed on one side of the screen member; and a charging and discharging control board disposed inside the frame and that controls charging and discharging of the electric power generated in the solar cell. Fig. 1 is a schematic perspective view for explaining a roll screen device according to the first embodiment. Fig. 2 is a schematic perspective view for explaining a roll screen device according to the second embodiment.

[0006] Hereinafter, the present invention will be described by way of preferred embodiments with reference to the drawings. The following configuration is for illustrative purposes for understanding the present disclosure, and the scope of the present disclosure is determined only by the scope of the appended claims. The same or equivalent elements and components shown in each drawing are denoted by the same reference numerals, and duplicate explanations are omitted accordingly. The dimensions of the parts in the drawings are enlarged or reduced for clarity. Some of the components may be omitted from each figure if they are not important for the explanation. First embodiment

[0007] Fig. Fig. 1 is a schematic perspective view illustrating a roll-up screen device 10 according to the first embodiment. This roll-up screen device 10 is used while being attached to an opening of a building. Fig. In the embodiment shown in Figure 1, the building opening is formed by frame materials such as posts (vertical frames) 11 and 12 extending vertically and cross members (horizontal frames, not shown) extending horizontally. A glass pane 13 is arranged on the outside of the building opening. The glass pane 13 is secured to the posts 11 and 12 by a predetermined support means, such as a structural sealant. The roller shade device 10 is arranged on the inside of the building opening.

[0008] The roll-up screen device 10 includes a screen member 14, a support member 17 that suspends and supports the screen member 14, guide rails 30 that guide the raising and lowering of the screen member 14, and a pair of frames 15 and 16 that have a built-in loading / unloading control panel and the like and are useful in forming the guide rails 30.

[0009] The shade member 14 is formed into a rectangular, arcuate body with flexibility. In this shade member 14, the upper end portion is longitudinally connected to a winding mechanism in the support member 17, and a lower rail 18 is provided at its lower end portion. The lower rail 18 exerts a force in the downward direction to pull the shade member 14 down and imparts tension to the shade member 14 to increase flatness.

[0010] A plurality of solar cells 28 are installed in the shielding part 14. In the Fig. In the example shown in Figure 1, a plurality of rectangular solar cells 28 are arranged side by side in the vertical direction (height direction). However, the size, shape, and arrangement method of the solar cells 28 are not particularly limited, and any size, shape, and arrangement is possible. For example, a plurality of solar cells 28 having a square shape in plan view may be arranged in a matrix pattern over the entire screen part 14. In general, the matrix arrangement is often used in crystalline silicon solar cells. The solar cells 28 are constructed to utilize the photovoltaic effect and convert light energy into electric power.

[0011] The electrical energy generated by each solar cell 28 is discharged via a wire 27 from the upper end of the shade portion 14. At this time, the wire 27 can be pulled out via a winding drum 29 attached to the holding portion 17 that holds the shade portion 14.

[0012] The holding part 17 comprises the winding drum 29 for winding the shield part 14 and a tubular motor 19 for rotating the winding drum 29. In the Fig. In the embodiment shown in Figure 1, the tubular motor 19 is shown outside the support member 17 for illustrative purposes; however, in reality, the tubular motor 19 is arranged such that the rotor is located inside the winding drum 29. The umbrella member 14 can be raised or lowered by driving the tubular motor 19.

[0013] The guide rails 30 are arranged at the respective left and right ends of the shade part 14 and are structured to sandwich the end portions of the shade part 14. The guide rails 30 are fixed to the side surfaces of the frames 15 and 16. The shade part 14 with the built-in solar cells 28 has the characteristic that wrinkles and uneven surfaces are more likely than in a fabric shade without built-in solar cells. The guide rails 30 can reduce wrinkles and uneven surfaces of the shade part 14. In addition, the guide rails 30 can prevent light and heat leakage from the side of the shade part 14, and thus improve the light-shielding performance, heat-shielding performance, and heat-insulating performance. Gaps between the guide rails 30 and the shade part 14 can be filled with mohair or the like.The guide rails 30 can be attached to the side surfaces of the posts 11 and 12, respectively. Alternatively, gaps can be provided between the post 11 and the frame 15, or between the post 12 and the frame 16, so that the guide rails 30 are attached while being received between the post 11 and the frame 15, and between the post 12 and the frame 16, respectively, at the respective ends thereof.

[0014] Frames 15 and 16 are hollow square columns and are arranged on the sides of the screen part 14 so that their longitudinal direction runs parallel to the longitudinal direction of the posts. Frame 15 is attached to post 11, and frame 16 is attached to post 12. The method of attaching the frames and the respective posts is not particularly limited and can be achieved by screwing, gluing, fitting, welding, or the like. The pairs of frames 15, 16 are spaced apart depending on the width of the opening.

[0015] In another embodiment, frames 15 and 16 can be U-shaped cross-section elements arranged so that their longitudinal direction runs parallel to the longitudinal direction of the posts. Furthermore, frames 15 and 16 can be attached to the top and bottom of the crossbeam or base block and glued to the posts 11 and 12.

[0016] In the rolling screen device 10 according to the present embodiment, a charging and discharging unit 34, which charges and discharges the electrical energy generated by the solar cells 28, is housed in the frame 16. The charging and discharging unit 34 includes a motor control panel 20, a Maximum Power Point Tracking (MPPT) control panel 22, a charging and discharging control panel 23, a communication control panel 24, a power supply panel 25, storage batteries (BMU (Battery Management Unit)) 21, an external power connector, a circuit breaker, and a fan, with the fan located on the top of the frame 16. These various panels and the storage batteries 21 are housed in the frame 16. However, the communication control panel 24 is not limited to being located within the frame 16, but can be arranged in a location where communication can be performed according to the communication method.When the communication control panel 24 is housed in the frame 16, an opening for wireless communication may be provided in the frame. When the communication control panel 24 is arranged outside the frame 16, the communication control panel 24 may be arranged, for example, on the upper part of the holding part 17. Furthermore, a power supply terminal 26 for supplying electric power to an external electronic device is arranged on a side surface of the frame 16. The location for the arrangement of the power supply terminal 26 is not limited to the side surface and may be arranged at any point on the frame 16. The power supply terminal 26 may be, for example, a USB port or a DC jack. In . Fig. 1, the various panels and the storage batteries 21 are shown transparent for explanation purposes; in reality, however, they are located inside the frame 16 and are therefore not visible from the outside. Furthermore, in Fig. 1, the motor control panel 20 is shown outside the frame 16 for the sake of simplicity; however, in reality, the motor control panel 20 is housed within the frame 16. The motor control panel 20 can be arranged inside the support part 17 or on the upper part of the support part 17.

[0017] The MPPT control panel 22 tracks the maximum operating point during power generation in real time according to changes in weather conditions. The charge and discharge control panel 23 controls the charging and discharging of the storage batteries 21. The communication control panel 24 controls communication with an external mobile terminal such as a smartphone. The power supply panel 25 controls the external power supply via the power supply port 26. The motor control panel 20 uses the electrical energy stored in the storage batteries 21 to control the drive of the tubular motor 19.

[0018] Thus, all components for energy generation, charging, and supply are integrated in the roller shutter device 10 according to the present embodiment, and the functions of energy generation, charging, and supply can be realized by simply attaching this roller shutter device 10 to an opening in a building. Since the frames 15 and 16 are separate from the posts 11 and 12, retrofitting to an existing building is easy.

[0019] When the electric power generated by the solar cells 28 is charged into a distant storage battery, the cable length becomes long, and in addition to the need to secure wiring space for this purpose, the structure becomes more complicated; furthermore, there is a possibility of increased power loss. On the other hand, in the roll-up screen device 10 according to the present embodiment, the generated electric power can be effectively utilized because the electric power generated by the solar cells 28 can be charged into the storage battery 21 located in the nearby frame 16.

[0020] Furthermore, in the roll-up screen device 10 according to the present embodiment, the tubular motor 19 is driven by self-generated electrical energy. Since no separate external power supply is required, this is extremely efficient and can save energy. Furthermore, it is possible to ensure external power supply (external power connection) in the event of a malfunction, etc.

[0021] Furthermore, in the roll-up screen device 10 according to the present embodiment, a power supply port 26 is provided on a side surface of the frame 16. For example, a portable information terminal such as an LED light, a desk fan, or a smartphone can be charged via the power supply port 26, and the generated electrical energy can be effectively utilized.

[0022] In the embodiment described above, the charging and discharging unit 34 is housed in only one frame 16; however, part or all of the structure of the charging and discharging unit may be arranged in the other frame 15. Furthermore, a plurality of PV modules (two or more in parallel) may be arranged in one frame containing a charging and discharging circuit. Second embodiment

[0023] Fig.2 is a schematic perspective view for explaining a rolling screen device 40 according to the second embodiment. This rolling screen device 40 has a configuration in which a charging and discharging unit including various panels and storage batteries is disposed within the posts 31 and 32 forming openings. That is, the posts 31 and 32 in the second embodiment can be regarded as the frames 15 and 16 and the posts 11 and 12 in the above-described first embodiment being integrally formed. The support member 17 can be supported by the posts 31 and 32. While the rolling screen device 10 according to the first embodiment is suitable for retrofitting to an existing building, the rolling screen device 40 according to the second embodiment is considered suitable for installation at the time of new construction of a building.At this time, the posts 31 and 32 are preferably provided with a door for performing maintenance work on a loading and unloading circuit and the like.

[0024] The roll-up screen device according to the above embodiment is configured to include a storage battery within a frame; however, in another embodiment, a roll-up screen device may be configured such that the frame does not include a storage battery, and the charging and discharging control board housed in the frame controls the charging and discharging of an external storage battery via a power supply terminal. In this case, too, the electric power generated by the solar cells 28 can be controlled by a nearby charging and discharging control board, so that the generated electric power can be effectively utilized.

[0025] The above description is an explanation of the present invention based on the embodiments. These embodiments are intended for illustrative purposes only, and it will be apparent to those skilled in the art that various modifications and changes can be developed 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. Therefore, the descriptions and figures in the specification should be treated as demonstrative rather than in a limited manner.

[0026] The present invention is applicable to a roll-up screen device comprising a solar cell. LIST OF REFERENCE SYMBOLS 10, 40 Roll-up screen device 11, 12, 31, 32 posts 13 Glass pane 14 Umbrella part 15, 16 frames 17 Holding part 18 floor rail 19 tubular engine 20 Motor control panel 21 Storage battery 22 MPPT control panel 23 Loading and unloading control panel 25 Power supply panel 26 Power supply connection 27 wire 28 solar cells 29 winding drum 30 guide rail 34 Loading and unloading unit QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 2011-179193

[0002]

Claims

[1] Roll-up screen device (10, 40) which can be arranged or is arranged at an opening of a building, comprising: a screen part (14) formed into an arc shape; a solar cell (28) located in the screen part (14); a holding part (17) which suspends and holds the umbrella part (14); a frame (15, 16) arranged on one side of the screen part (14); and a charging and discharging control board (23) housed inside the frame (15, 16) and configured to control the charging and discharging of the electrical energy generated in the solar cell (28). [2] A roll-up screen device (10, 40) according to claim 1, further comprising a storage battery (21) controllable or controlled by the charging and discharging control panel (23) housed inside the frame (15, 16). [3] A roll screen device (10, 40) according to claim 1 or 2, further comprising an MPPT control panel (22) housed inside the frame (15, 16). [4] Roll-up screen device (10, 40) according to one of claims 1 to 3, wherein the frame is formed integrally with a vertical frame (31, 32) of the opening. [5] Roll-up screen device (10, 40) according to one of claims 1 to 3, wherein the frame (15, 16) is formed as a body separate from a vertical frame (11, 12) of the opening and is fixed to the vertical frame (11, 12) by a fixing element. [6] Roll screen device (10, 40) according to one of the preceding claims, further comprising: an electric motor (19) for raising and lowering the umbrella part (14), wherein the electric motor (19) is driven by the electrical energy stored in the storage battery (21). [7] Roll screen device (10, 40) according to one of claims 1 to 6, wherein the frame (15, 16) has a power supply connection (26) for supplying an external electronic device with electrical power. [8] Roll-up screen device (10, 40) according to one of the preceding claims, wherein an external power connection is further provided for the power supply from the outside. [9] Roll screen device (10, 40) according to one of the preceding claims, wherein the charging and discharging control panel (23) is arranged to charge and discharge an external storage battery (21).

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