Light shielding body opening and closing system

Abstract

To provide a light shielding body opening and closing system capable of effectively controlling the opening and closing of a light shielding body.SOLUTION: A light shielding body opening and closing system 1 for automatically opening and closing a light shielding body 4 provided on a window 3 of a building 2 in accordance with the amount of solar radiation includes a drive unit 10 that drives the light shielding body 4 to open and close, a solar radiation sensor 20 that detects the amount of solar radiation, and a control unit 30 that controls the operation of the drive unit 10 so as to open and close the light shielding body 4 in accordance with the amount of solar radiation detected by the solar radiation sensor 20. The solar radiation sensor 20 is attached to the window 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a light shielding body opening and closing system that automatically opens and closes a light shielding body provided on a window of a building in accordance with the amount of solar radiation. [Background technology]

[0002] 2. Description of the Related Art For example, windows installed in the facades of buildings such as office buildings, hotels, hospitals, and apartment buildings are generally provided with openable and closable light blocking devices such as blinds and roller screens to block sunlight entering the rooms.

[0003] Conventionally, a system for automatically opening and closing such a shade is known that includes a drive unit such as an electric motor that drives the shade to open and close, a solar radiation sensor (light sensor) that detects the amount of solar radiation, and a control unit (control device) that controls the operation of the drive unit to open and close the shade in accordance with the amount of solar radiation detected by the solar radiation sensor (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-114974 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the above conventional system, the solar radiation sensor is installed outdoors, such as near an opening where a window is provided, and therefore, there is a problem that the solar radiation sensor cannot accurately detect the amount of solar radiation entering the room through the window, and therefore, it may not be possible to properly control the opening and closing of a light blocking body such as a blind or a roller screen.

[0006] The present invention has been made in view of the above problems, and has an object to provide a light shielding body opening and closing system capable of effectively controlling the opening and closing of a light shielding body. [Means for solving the problem]

[0007] The light shield opening / closing system of the present invention is a light shield opening / closing system that automatically opens and closes a light shield installed on a window of a building, and is characterized in that it has a drive unit that drives the light shield to open and close, a solar radiation sensor that detects the amount of solar radiation, and a control unit that controls the operation of the drive unit to open and close the light shield in accordance with the amount of solar radiation detected by the solar radiation sensor, and the solar radiation sensor is attached to the window.

[0008] In the light shielding body opening and closing system of the present invention having the above-mentioned configuration, it is preferable that the solar radiation sensor is a solar cell.

[0009] In the light shielding body opening and closing system of the present invention having the above-mentioned configuration, it is preferable that the solar radiation sensor is a spherical solar cell.

[0010] In the above-mentioned configuration of the light blocking opening and closing system of the present invention, it is preferable that the solar radiation sensor is attached to each of a plurality of windows provided in the facade of the building, and the control unit creates a heat map corresponding to the plurality of windows based on input from each of the solar radiation sensors. Effect of the Invention

[0011] According to the present invention, it is possible to provide a light shielding body opening and closing system capable of satisfactorily controlling the opening and closing of a light shielding body. [Brief description of the drawings]

[0012] [Figure 1] 1 is a cross-sectional view of a building facade provided with a shade opening and closing system according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the window shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view of the solar radiation sensor shown in FIG. [Figure 4] 2 is a flow chart of control of the light blocking body opening and closing system shown in FIG. 1. [Diagram 5] FIG. 2 is a front view of a window having multiple solar radiation sensors attached thereto. [Figure 6] FIG. 1 shows a portion of a facade with multiple windows each fitted with a solar radiation sensor. [Figure 7] FIG. 13 is a diagram showing a modified example of the arrangement of the solar radiation sensor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A light blocking body opening / closing system according to an embodiment of the present invention will be described in detail below with reference to the drawings.

[0014] A shade opening / closing system 1 according to one embodiment of the present invention shown in FIG. 1 automatically opens and closes a shade 4 provided on a window 3 of a building 2 in response to the amount of solar radiation.

[0015] The building 2 is a building having a window 3, such as an office building, a hotel, a hospital, or an apartment building. The building 2 may be any type of building as long as it has at least one window 3. In this embodiment, the building 2 is a reinforced concrete building and has a window 3 in its facade 5. Although only one window 3 is shown in FIG. 1, the building 2 may be provided with a plurality of windows 3, and each window 3 may be provided with the light blocking opening and closing system 1 according to this embodiment. The window 3 may also be provided on an exterior wall other than the facade 5 of the building 2.

[0016] The window 3 is configured such that a transparent rectangular plate-shaped window body 3b is attached inside a rectangular window frame (sash) 3a. The window body 3b may be made of glass or transparent synthetic resin. Furthermore, the window body 3b is not limited to being completely transparent, and may be semi-transparent or colored, so long as it has translucency. Furthermore, in this embodiment, the window 3 is a fixed type that does not open or close, but may be configured to be openable and closable.

[0017] The light blocking body 4 can be opened and closed so that when closed, it covers the window 3 and blocks sunlight from entering the room 6 through the window 3, and when open, it allows sunlight to enter the room 6 through the window 3. The light blocking body 4 is, for example, a blind or a roller screen.

[0018] In this embodiment, the light blocking body 4 is a blind 4a arranged on the indoor 6 side of the window 3 and a roller screen 4b arranged on top of the blind 4a on the indoor 6 side. Note that in this embodiment, two light blocking bodies 4, the blind 4a and the roller screen 4b, are provided on the window 3, but it is sufficient that at least one light blocking body 4 is provided on the window 3.

[0019] The blind 4a has a plurality of slats (louvers) 4a1 (for convenience, only one slat is marked in FIG. 1) extending horizontally and arranged at equal intervals in the vertical direction, and a pair of cords 4a2 connecting the plurality of slats 4a1. By changing the angle of the plurality of slats 4a1 with the pair of cords 4a2, the blind 4a can be opened and closed between a closed state in which the plurality of slats 4a1 overlap each other to cover the window 3, and an open state in which the plurality of slats 4a1 are arranged at intervals in the vertical direction, as shown in FIG. 1. Note that the configuration of the blind 4a is not limited to the above, and the configuration can be modified in various ways as long as it can be opened and closed.

[0020] The roller blind 4b is also called a roller curtain and has a winding shaft 4b1 and a screen 4b2. As shown in Fig. 1, the roller blind 4b can be opened and closed between a closed state in which the screen 4b2 is unwound from the winding shaft 4b1 to cover the window 3, and an open state in which the screen 4b2 is wound around the winding shaft 4b1.

[0021] The light blocking body 4 is provided with a drive unit 10 for driving it to open and close.

[0022] The blind 4a is provided with a drive unit 10a equipped with a drive source such as an electric motor. The drive unit 10a drives a pair of strings 4a2 to change the angles of the multiple slats 4a1, thereby opening and closing the blind 4a.

[0023] The roller screen 4b is provided with a drive unit 10b having a drive source such as an electric motor. The drive unit 10b can open and close the roller screen 4b by rotating the winding shaft 4b1 in forward and reverse directions.

[0024] The light blocking device opening / closing system 1 includes a solar radiation sensor 20 that detects the amount of solar radiation. The solar radiation sensor 20 is attached to the window body 3b of the window 3. By being attached to the window body 3b, the solar radiation sensor 20 can accurately detect the amount of solar radiation entering the room 6 through the window body 3b.

[0025] More specifically, in this embodiment, the solar radiation sensor 20 is attached to the inner surface of the window body 3b facing the room 6. Also, as shown in Fig. 2, the solar radiation sensor 20 is attached to a position close to one of the four corners of the window body 3b (the upper left corner in Fig. 2).

[0026] It is preferable to use a spherical solar cell as the solar radiation sensor 20. In this embodiment, Sphelar (registered trademark), a spherical solar cell manufactured by Sphelar Power Co., Ltd., is used as the solar radiation sensor 20. As shown in FIG. 3, the solar radiation sensor 20 has a pn junction surface composed of a spherical core 21 made of a p-type semiconductor and a shell 22 made of an n-type semiconductor covering the outside of the core 21, and is covered as a whole with a light-transmitting cover 23. In addition, an electrode 24 connected to the core 21 and an electrode 25 connected to the shell 22 are exposed to the outside from the cover 23. The solar radiation sensor 20 is spherical with an outer diameter of about 1 to 2 mm, and can generate power by receiving light on its outer circumferential surface. That is, the solar radiation sensor 20 generates power when it receives solar radiation on its outer circumferential surface, and generates a current between the pair of electrodes 24 according to the amount of solar radiation. In addition, since the solar radiation sensor 20 is spherical, it can effectively receive solar radiation regardless of the direction of the solar radiation and accurately detect the amount of solar radiation.

[0027] 1, the light blocking device opening / closing system 1 has a control unit 30. The control unit 30 is configured as a microcomputer having, for example, a determination unit 31 configured as one function of a CPU (Central Processing Unit), a storage unit (memory) 32 storing a control program and the like, an output unit 33 outputting a drive signal to the drive unit 10, and the like.

[0028] The solar radiation sensor 20 and the drive unit 10 (drive units 10a and 10b) are connected to the control unit 30. The control unit 30 controls the operation of the drive unit 10 to open and close the light blocking body 4 in accordance with the amount of solar radiation detected by the solar radiation sensor 20.

[0029] More specifically, as shown in Fig. 4, when light such as sunlight hits the solar radiation sensor 20, the solar radiation sensor 20, i.e., the spherical solar cell, generates electricity (step S1), and generates a current according to the amount of solar radiation (step S2). The amount of solar radiation detected by the solar radiation sensor 20, i.e., an analog current value, is input to the control unit 30, and the judgment unit 31 judges whether the current value input from the solar radiation sensor 20 is equal to or greater than a preset threshold value according to a control program stored in the storage unit 32 (step S3). If the judgment unit 31 judges that the current value input from the solar radiation sensor 20 is equal to or greater than the threshold value, the output unit 33 outputs a control signal to the drive unit 10, i.e., the drive units 10a and 10b, to close the shade 4, i.e., the blind 4a and the roller blind 4b, which are the shade 4, by the drive units 10a and 10b to close them (step S4). On the other hand, if the judgment unit 31 judges that the current value of the solar radiation sensor 20 is less than the threshold value, the output unit 33 outputs a control signal to the drive units 10a and 10b to open the light blocking body 4, and the blinds 4a and the roller screen 4b, which are the light blocking body 4, are driven and opened by the drive units 10a and 10b (step S5). After this, the detection of the amount of solar radiation by the solar radiation sensor 20 and the opening / closing control of the light blocking body 4 by the control unit 30 in accordance with the amount of solar radiation detected by the solar radiation sensor 20 are continuously performed.

[0030] In this manner, in this embodiment, a solar cell is used as the solar radiation sensor 20, and the current generated by the solar cell is used as a signal or trigger to control the opening and closing of the light blocking body 4.

[0031] In this embodiment, the control unit 30 opens and closes the light blocking body 4 by comparing the amount of solar radiation detected by the solar radiation sensor 20 with a predetermined threshold value. However, the control method can be modified in various ways, for example by setting multiple different threshold values ​​and controlling the operation of the drive unit 10 to gradually change the opening degree of the light blocking body 4 according to the threshold values.

[0032] As described above, in the shade opening and closing system 1 according to this embodiment, the solar radiation sensor 20 is attached to the window, so that the solar radiation sensor 20 can accurately detect the amount of solar radiation entering the room 6 through the window body 3b. Therefore, according to the shade opening and closing system 1 according to this embodiment, the opening and closing of the shade 4 can be well controlled based on the amount of solar radiation entering the room 6 through the window body 3b.

[0033] In particular, in this embodiment, a spherical solar cell is used as the solar radiation sensor 20, so that the solar radiation can be effectively received and the amount of solar radiation can be accurately detected regardless of the direction of the solar radiation. Therefore, according to the shade opening / closing system 1 according to this embodiment, the opening / closing control of the shade 4 based on the amount of solar radiation entering the room 6 through the window body 3b can be more effectively performed.

[0034] In addition, in this embodiment, a small spherical solar cell with a diameter of approximately 1 to 2 mm is used as the solar radiation sensor 20, so that the solar radiation sensor 20 can be easily attached to the window 3 and the impact of the solar radiation sensor 20 on the design of the facade 5 can be reduced, thereby improving the aesthetic appearance of the building 2 in which the solar radiation sensor 20 is installed.

[0035] Furthermore, in this embodiment, since the solar radiation sensor 20 is attached to the window 3, the solar radiation sensor 20 is disposed on the outdoor side of the shading body 4 such as the blinds 4a and the roller screen 4b. This allows the solar radiation sensor 20 to detect solar radiation well even when the shading body 4 such as the blinds 4a and the roller screen 4b is closed, and allows the opening and closing of the shading body 4 to be controlled well.

[0036] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention.

[0037] For example, in the above embodiment, one solar radiation sensor 20 is attached to one window 3 as shown in Fig. 1 and Fig. 2, but the present invention is not limited to this. For example, as shown in Fig. 5, four solar radiation sensors 20 may be attached to four corners of the window body 3b of the window 3, and multiple solar radiation sensors 20 may be attached to one window 3. In this case, the control unit 30 may be configured to control the drive unit 10 to close the light blocking body 4 when the amount of solar radiation or the current value detected by at least one of the multiple solar radiation sensors 20 is equal to or greater than a predetermined threshold, and to open the light blocking body 4 when the amount of solar radiation or the current value detected by all of the solar radiation sensors 20 is less than the predetermined threshold. With this configuration, the amount of solar radiation entering the room 6 through the window 3 can be detected more accurately by the multiple solar radiation sensors 20, and the opening and closing control of the light blocking body 4 can be performed more effectively.

[0038] When multiple solar radiation sensors 20 are attached to one window 3, the number of the solar radiation sensors 20 is not limited to four. In addition, the arrangement of the multiple solar radiation sensors 20 on one window 3 is not limited to the arrangement shown in Fig. 5, and can be changed in various ways.

[0039] 6, when a facade 5 of a building 2 has multiple windows 3, a solar radiation sensor 20 can be attached to each window 3, and the control unit 30 can be configured to create a heat map corresponding to the multiple windows 3 based on input from each solar radiation sensor 20. That is, the solar radiation sensor 20 detects the amount of solar radiation for each of the multiple windows 3 provided in the facade 5, and the control unit 30 creates a heat map of the effect of sunlight on each window 3, i.e., the degree of heating by sunlight, based on these detection results.

[0040] In such a configuration, the control unit 30 may be configured to control the opening and closing of the light blocking body 4 provided in each window 3 based on the created heat map. Furthermore, the control unit 30 may be configured to control the operation of an air conditioner (not shown) provided in the room 6 corresponding to each window 3, in addition to or instead of controlling the opening and closing of the light blocking body 4. In this case, the control unit 30 may be configured to control the operation of the air conditioner so as to lower the temperature of the room 6 in which the window 3 determined to have a large influence of sunlight based on the heat map is provided, or to adjust the brightness of the lighting in the room 6, for example.

[0041] In the above embodiment, the solar radiation sensor 20 is attached to the inner surface of the window body 3b facing the room 6 as shown in Figures 1 and 2, but this is not limiting, and the window 3 may be configured as a double-glazed window in which two window bodies 3b are arranged with a gap between them, and the solar radiation sensor 20 may be attached between the two window bodies 3b as shown in Figure 7. With this configuration, the solar radiation sensor 20 is isolated from the outside, and damage to the solar radiation sensor 20 can be prevented.

[0042] Furthermore, in the above embodiment, a spherical solar cell is used as the solar radiation sensor 20, but this is not limited, and solar cells of other shapes, such as a plate shape, may be used. Furthermore, the solar radiation sensor 20 is not limited to a solar cell, and solar radiation sensors of other configurations may be used. [Explanation of symbols]

[0043] 1. Shade opening and closing system 2. Building 3. Windows 3a Window frame 3b Window body 4. Shading body 4a Blinds 4a1 Slat 4a2 String 4b Roller Blind 4b1 Winding shaft 4b2 Screen 5. Facade 6 Indoor 10 Drive unit 10a Drive unit 10b Drive unit 20. Solar radiation sensor 21 cores 22 Shell 23 Cover 24 electrodes 25 electrodes 30 Control section 31 Judgment Department 32 Storage area 33 Output section

Claims

1. A light shielding body opening and closing system that automatically opens and closes a light shielding body installed on a window of a building according to the amount of solar radiation, A drive unit that drives the light blocking body to open and close; A solar radiation sensor for detecting the amount of solar radiation; A control unit controls the operation of the drive unit to open and close the light blocking body in response to the amount of solar radiation detected by the solar radiation sensor, A shade opening and closing system, characterized in that the solar radiation sensor is attached to the window.

2. The shade opening and closing system according to claim 1 , wherein the solar radiation sensor is a solar cell.

3. The shade opening and closing system according to claim 2 , wherein the solar radiation sensor is a spherical solar cell.

4. The solar radiation sensor is attached to each of a plurality of windows provided in the facade of the building; The shade opening / closing system according to any one of claims 1 to 3, wherein the control unit creates a heat map corresponding to the plurality of windows based on input from each of the solar radiation sensors.

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