JP2020114974A - Electric blind device and control method of the same - Google Patents

Abstract

To control sunlight toward a room inside and to ensure preferable daylighting.SOLUTION: An electric blind device which electrically raises and lowers a blind having a plurality of slats comprises a light sensor measuring an amount of sunlight S, and a control device controlling the plurality of the slats so as to be in a first fully-closed state and lowering the blind, and also controlling the plurality of the slats so as to be in a second fully-closed state which is an inversion of the first fully-closed state and raising the blind. The control device, when the amount of sunlight S equals to a predetermined value or more, moves the blind to a first position after moving the blind to a lowest position.SELECTED DRAWING: Figure 1

Description

The present invention relates to an electric blind device and a control method thereof.

Patent Document 1 below describes that by adjusting the rotation angles of a plurality of slats based on the output of an optical sensor, it is possible to suppress solar radiation into the room and ensure suitable lighting.
Specifically, in Patent Document 1, an opening/closing mechanism that opens and closes a plurality of slats fixed at a predetermined position and the opening/closing mechanism when the measurement result of an optical sensor provided outdoors exceeds a reference value. An opening/closing control device including a control device for controlling and opening/closing a plurality of slats is disclosed.

Japanese Patent No. 2640996

By the way, in recent years, a plurality of slats are controlled to a first fully closed state, a plurality of slats are lowered, and a plurality of slats are controlled to a second fully closed state which is a reverse of the first fully closed state. An electric blind device for raising a plurality of slats has been proposed. Unlike the patent document 1, this electric blind device moves up and down a plurality of slats. Furthermore, since the electric blind device controls the states of the plurality of slats in relation to the raising and lowering operations of the plurality of slats, it does not have an opening/closing mechanism as in Patent Document 1. Therefore, the opening/closing control device described in Patent Document 1 cannot be directly applied to the electric blind device.

The present invention has been made in view of such circumstances, and an object thereof is to control a plurality of slats to a first fully closed state to lower a plurality of slats and to close the plurality of slats to a first fully closed state. In an electric blind device that raises a plurality of slats by controlling the second fully closed state, which is reversed from the state, it is possible to suppress the solar radiation into the room and to secure a suitable daylighting property.

One aspect of the present invention is an electric blind device that electrically raises and lowers a blind having a plurality of slats, wherein an optical sensor for measuring the amount of solar radiation S and the plurality of slats are controlled to a first fully closed state. A control device that lowers the blind and controls the plurality of slats from the first fully closed state to a second fully closed state in which the slats are reversed to raise the blind. When the amount of solar radiation S is equal to or more than a predetermined value, the blind is moved to the lower limit position and then the blind is moved to the first position.

One aspect of the present invention is the electric blind device described above, wherein the control device raises the blind from the lower limit position to a second position to move the plurality of slats from the first fully closed state. The first position may be set to a position between the lower limit position and the second position by controlling the second fully closed state.

One aspect of the present invention is the electric blind device described above, wherein the control device may move the blind to the lower limit position or the upper limit position when the solar radiation amount S is below the predetermined value. Good.

One aspect of the present invention is the above-described electric blind device, wherein the control device sets the blind to the lower limit regardless of a current position of the blind when the solar radiation amount S is equal to or more than the predetermined value. The blind may be lowered to a position and then raised to control the blind to the first position.

One aspect of the present invention includes a blind including a plurality of slats, the plurality of slats are controlled to a first fully closed state to lower the blind, and the plurality of slats are moved from the first fully closed state. A control method of an electric blind device which controls the second fully closed state which is reversed to raise the blind, wherein when the amount of solar radiation S measured by the optical sensor is equal to or more than a predetermined value, the lower limit of the blind is set. It is a control method including a first step of moving the blind to a position and a second step of raising the blind reaching the lower limit position in the first step to control the blind to a predetermined position.

As described above, according to the present invention, the plurality of slats are controlled to the first fully closed state to lower the plurality of slats, and the second slats are reversed from the first fully closed state. In the electric blind device that controls the fully closed state to raise the plurality of slats, it is possible to suppress the solar radiation into the room and to secure a suitable daylighting property.

It is a figure which shows an example of a schematic structure of the electric blind apparatus A which concerns on this embodiment. It is a figure which shows an example of a schematic structure of the head box 7 which concerns on this embodiment. It is a figure showing an example of the block diagram of the control device 13 concerning this embodiment. It is a figure explaining rotation of a plurality of slats 1a concerning this embodiment. It is a flow figure of operation of electric blind device A concerning this embodiment.

Hereinafter, an electric blind device and a control method thereof according to the present embodiment will be described with reference to the drawings.

The electric blind device A according to this embodiment is arranged in an opening O such as a window or a door of a building, and electrically closes or opens the blind O including a plurality of slats 1a by moving the blind 1 up and down. As a result, the electric bride device A hinders visual recognition from the outside into the room and suppresses solar radiation into the room. Further, the electric blind device A electrically raises the blind 1 by a predetermined distance from the state where the opening O is closed to rotate the plurality of slats 1a by a predetermined angle. As a result, the electric blind device A secures suitable lighting in the room. The electric blind device A according to this embodiment is a so-called horizontal blind. The electric blind device A according to the present embodiment will be specifically described below.

FIG. 1 is a diagram showing an example of a schematic configuration of an electric blind device A according to the present embodiment. FIG. 2 is a diagram showing an example of a schematic configuration of the head box 7 according to the present embodiment.

As shown in FIG. 1, the electric blind device A includes a blind 1, a ladder cord 2, an elevating cord 3, a guide rail 4, an operation unit 5, an optical sensor 6, and a head box 7. As shown in FIG. 2, the head box 7 includes a shaft 8, a motor 9, a first drum 10, a second drum 11, an output unit 12 and a controller 13.

The blind 1 includes a plurality of slats 1a and a bottom rail 1b.

The plurality of slats 1a are long members arranged in the vertical direction and extending in the horizontal direction perpendicular to the vertical direction. Each slat 1a is, for example, a metal such as aluminum or a resin member such as plastic. The plurality of slats 1a are arranged in a plurality of stages in the vertical direction and supported by a ladder cord 2 suspended in the vertical direction.

The bottom rail 1b is provided at the lowermost end of the blind 1. For example, the bottom rail 1b is provided below the lowermost slat 1a among the slats 1a arranged in a plurality of columns in the vertical direction. The bottom rail 1b is supported by the ladder cord 2.

The ladder cord 2 has a first end fixed to the first drum 10 housed in the head box 7, and a second end fixed to the bottom rail 1b. The ladder cord 2 rotatably supports the plurality of slats 1a between the first end portion and the second end portion. For example, the ladder cord 2 includes a pair of vertical cords facing each other in the widthwise direction of the slat 1a and a plurality of horizontal cords passed between the pair of vertical cords. A first end of the pair of vertical cords is fixed to the first drum 10 housed in the head box 7, and a second end thereof is fixed to the bottom rail 1b. Further, each slat 1a is supported by being inserted between the two horizontal cords.

The first end of the lifting cord 3 is fixed to the second drum 11 housed in the head box 7. The second end of the elevating cord 3 is fixed to the bottom rail 1b by inserting each hole provided in each slat 1a in a plurality of vertical stages.

The guide rail 4a and the guide rail 4b are provided in a pair at both ends in the width direction of the blind 1, and are erected vertically to the bottom surface. The guide rails 4a and 4b regulate the lateral displacement of the bottom rail 1b. That is, the bottom rail 1b moves vertically while being regulated by the guide rails 4a and 4b. A stopper may be provided at each lower end of the guide rails 4a and 4b to prevent the bottom rail 1b from being vertically displaced from the guide rails 4a and 4b.

The operation unit 5 is connected to the control device 13 to be operated by wire or wirelessly, and can communicate with the control device 13 mutually. The operation unit 5 is operable by a user (including a worker) and includes a unit for inputting an operation signal to the control device 13. The operation unit 5 is, for example, a remote control device. The user can operate the operation unit 5 to move the blind 1 up and down and rotate the plurality of slats 1a.

In the present embodiment, the operation unit 5 includes a plurality of switches. For example, the plurality of switches are an open switch, a close switch, and a rotation adjustment switch. Therefore, the user can instruct the control device 13 to move the blind 1 up and down, stop the lift, and rotate the plurality of slats 1a by pressing these switches.

Specifically, when one of the switches is pressed by the user, the operation unit 5 outputs an operation signal, which is a signal corresponding to the switch, to the control device 13.
For example, the operation unit 5 transmits to the control device 13 a first operation signal instructing the raising operation of the blind 1 while the open switch is operated. Further, the operation unit 5 transmits a second operation signal for instructing the lowering operation of the blind 1 to the control device 13 while the closing switch is operated. Further, when the rotation adjustment switch is operated, the operation section 5 transmits a third operation signal for instructing the rotation of the plurality of slats 1a to the control device 13.

The optical sensor 6 measures the solar radiation amount S. Then, the measured solar radiation amount S is transmitted to the control device 13 wirelessly or by wire. The optical sensor 6 is, for example, a sunlight sensor. The optical sensor 6 is not particularly limited to the installation location as long as the optical sensor 6 can measure the solar radiation amount S. For example, the optical sensor 6 is installed outdoors and near the opening O.

The shaft 8 is connected to the output shaft of the motor 9. The shaft 8 is rotationally driven by a motor 9 in forward and reverse directions. In accordance with the rotation of the shaft 8, the slat 1a in multiple stages is unwound or wound up.

The motor 9 is a drive source for the raising/lowering operation of the blind 1. The rotation of the motor 9 is controlled by the controller 13.

The first drum 10 is provided on the shaft 8. Further, the first end of the ladder cord 2 (for example, each first end of a pair of vertical cords) is fixed to the first drum 10. The first drum 10 rotates the plurality of slats 1a as the shaft 8 rotates.

The second drum 11 is provided on the shaft 8. The first end of the lifting cord 3 is fixed to the second drum 11. The second drum 11 raises and lowers the plurality of slats 1a and the bottom rail 1b by winding or rewinding the lifting cord 3 as the shaft 8 rotates.

The rotation of the shaft 8 causes the second drum 11 to rotate, whereby the ladder cord 2 tilts and the rotation of the slat 1a is controlled. For example, the first drum 10 is rotated integrally with the second drum 11 only when the second drum 11 rotates by a predetermined angle.

The first drum 10 and the second drum 11 may be separate bodies or may be integrated.

The output unit 12 has a function of outputting the driving status of the motor 9. The output unit 12 is, for example, an encoder built in the motor 9. The output unit 12 outputs a position pulse corresponding to the rotation of the motor 9 to the control device 13. For example, the output unit 12 outputs one position pulse to the control device 13 when the motor 9 makes one rotation. The output unit 12 is not limited to the encoder, and can be arbitrarily selected as long as it can grasp the rotation amount of the winding shaft or the motor 9, such as measuring the rotation angle amount of the motor 9.

The control device 13 electrically drives the plurality of slats 1a to move up and down by controlling the driving of the motor. The control device 13 also controls the rotation of the plurality of slats 1a by controlling the driving of the motor. The configuration of the control device 13 according to the present embodiment will be described below with reference to FIG. FIG. 3 is an example of a configuration diagram of the control device 13 according to the present embodiment.

As shown in FIG. 3, the control device 13 includes a communication unit 14, a drive unit 15, a control unit 16, and a storage unit 17.

The communication unit 14 sends and receives information by communicating with the operation unit 5 in a wired or wireless manner. The communication system of the communication unit 14 is not particularly limited, but in the present embodiment, a wireless communication system such as short-range wireless communication standard RF4CE (Radio Frequency for Consumer Electronics) or Bluetooth (registered trademark) is used. In addition, the communication unit 14 may receive the irradiation amount measured by the optical sensor 6 by communicating with the optical sensor 6 in a wired or wireless manner.

The drive unit 15 drives or stops the motor 9 by generating a drive signal according to a command from the control unit 16 and outputting the drive signal to the motor 9.

The control unit 16 includes, for example, a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, a storage device, or the like.

The control unit 16 electrically drives the plurality of slats 1a to move up and down by controlling the driving of the motor. Specifically, when lowering the plurality of slats 1a, the control unit 16 controls the plurality of slats to the first fully closed state by rotating the motor in the forward direction to lower the blind 1. On the other hand, when raising the plurality of slats 1a, the control unit 16 controls the plurality of slats 1a from the first fully closed state to the second fully closed state by reversing the motor by rotating the motor in the reverse direction. Raise the slat. The first fully closed state is a state in which the plurality of slats 1a are fully closed, and for example, each convex surface of the plurality of slats 1a faces the outdoor side. For example, the first fully closed state is a state in which the plurality of slats 1a are rotated by 80° from the horizontal plane. On the other hand, the second fully closed state is a state in which the plurality of slats 1a are fully closed and, for example, each convex surface of the plurality of slats 1a faces the indoor side. For example, the second fully closed state is a state in which the plurality of slats 1a are rotated −80° from the horizontal plane.

Here, the lifting operation of the plurality of slats in the control unit 16 will be described with reference to FIG. For example, when closing the opening O, the control unit 16 causes the motor to rotate normally. As a result, the blind 1 including the plurality of slats 1a and the bottom rail 1b descends, and the plurality of slats 1a transition to the first fully closed state. That is, the first drum 10 rotates integrally with the second drum 11 only when the second drum 11 rotates by a predetermined angle. Therefore, when the blind 1 descends, the plurality of slats 1a transition to the first fully closed state. To do.

Here, the blind 1 continues to descend even after the plurality of slats 1a have transitioned to the first fully closed state, and when the blind 1 reaches the lower limit position P1, the control unit 16 stops driving the motor. .. For example, when the control unit 16 determines that the bottom rail 1b has reached the lower limit position P1, it stops driving the motor. Thereby, the control unit 16 can close the opening O. The lower limit position P1 is the position of the blind 1 (the bottom rail 1b or the plurality of slats 1a) when the opening O is in the closed state. For example, the lower limit position P1 is the position of the blind 1 when the bottom rail 1b contacts the stopper.

When raising the blind 1 at the lower limit value Pl, the control unit 16 reverses the motor. As a result, the blind 1 at the lower limit value Pl rises. Here, when the blind 1 starts to move upward, the plurality of slats 1a in the first fully closed state start to rotate. That is, since the first drum 10 rotates integrally with the second drum 11 only when the second drum 11 rotates by a predetermined angle, when the blind 1 rises, the plurality of slats 1a are directed to the second fully closed state. To start turning.

When the blind 1 (bottom rail 1b) rises from the lower limit value Pl to the reversal position Pr, the plurality of slats 1a rotate from the first fully closed state to the second fully closed state. That is, when the blind 1 starts the raising operation from the lower limit position P1 to the reversal position Pr, the plurality of slats 1a in the first fully closed state shown in FIG. It rotates in the order of (d) and rotates to the second fully closed state shown in FIG. 4(e). When the blind 1 continues to rise, the blind 1 rises while the plurality of slats 1a are in the second fully closed state.
In this way, the control unit 16 controls the plurality of slats 1a from the first fully closed state to the second fully closed state by raising the blind 1 from the lower limit position P1 to the reversal position Pr.

Even if the blind 1 is controlled to the reverse position Pr, the distance D between the lower limit position P1 and the reverse position Pr is so small that the blind 1 is visually recognized as being at the lower limit position P1. However, in FIG. 4, the distance D between the lower limit position P1 and the reversal position Pr is exaggerated in order to improve the visibility of the drawing.

The control unit 16 controls the drive of the motor 9 according to the operation of the switch of the operation unit 5. Thereby, the control unit 16 can raise and lower the plurality of slats 1a to close or open the opening O.
Further, when the solar radiation amount S measured by the optical sensor 6 is equal to or larger than the predetermined value Sth, the control unit 16 moves the blind 1 to the lower limit position P1 to close the opening O. Then, the control unit 16 moves the blind 1 to the lower limit position P1 to close the opening O, and then raises the blind 1 to move the blind 1 to a predetermined position Px. The predetermined position Px is set to an arbitrary position of the distance D between the lower limit position P1 and the reverse position Pr. For example, the predetermined position Px is stored in the storage unit 17 in advance.
The predetermined position Px is an example of the “first position” in the present invention. The reversal position Pr is an example of the "second position" in the present invention.

The control unit 16 may move the blind 1 to the lower limit position P1 or the upper limit position P2 when the solar radiation amount S measured by the optical sensor 6 falls below a predetermined value Sth. For example, the control unit 16 may close the opening O by lowering the blind 1 to the lower limit position when the solar radiation amount S measured by the optical sensor 6 is lower than the predetermined value Sth. Further, the control unit 16 may raise the blind 1 to the upper limit position P2 and open the opening O when the solar radiation amount S measured by the optical sensor 6 is below a predetermined value Sth. For example, the upper limit position P2 is the position of the blind 1 (for example, the bottom rail 1b) when the plurality of slats 1a are all stored in the head box 7.

The method of determining whether or not the blind 1 has reached the lower limit position P1 in the control unit 16 is not particularly limited, but the following method can be considered as an example.
For example, the control unit 16 recognizes the current position P of the blind 1 by counting the position pulse from the output unit 12. The control unit 16 updates the count value N by adding the number of position pulses (the number of pulses) from the current count value N during the lowering operation of the blind 1. On the other hand, the control unit 16 updates the count value N by subtracting the number of position pulses (the number of pulses) from the current count value N during the raising operation of the blind 1. Thereby, the control unit 16 can recognize the current position P of the blind 1 from the count value N of the position pulse. The position P of the blind 1 may be the position of the bottom rail 1b.

Here, for example, in the storage unit 17, the count value N when the blind 1 at the upper limit position P2 is lowered until reaching the lower limit position P1 with the upper limit position P2 as the reference position is stored in advance as the threshold value Nth. There is. When the count value N reaches the threshold value Nth during the lowering operation of the blind 1, the control unit 16 determines that the current position P of the blind 1 is the lower limit position Pl, that is, the opening O is in the closed state. To do.

Next, an example of a method of setting the predetermined position Px according to the present embodiment will be described.
First, the user operates the operation unit 5 to move the blind 1 to a position where the rotation angles of the plurality of slats 1a are the angles desired by the user. When the user moves the blind 1 to a position desired by the user, the user performs a predetermined operation on the operation unit 5. The operation unit 5 transmits a setting signal to the control unit 16 when a predetermined operation is performed. For example, the predetermined operation is an operation different from a short pressing operation of one of the open switch, the close switch, and the rotation adjustment switch. Specifically, the predetermined operation is a simultaneous push of two or more switches among the open switch, the close switch, and the rotation adjustment switch, or a long push of one or more switches. The setting signal is a signal different from any of the first operation signal, the second operation signal, and the third operation signal. When receiving the setting signal from the operation unit 5, the control unit 16 stores the current position P in the storage unit 17 as the predetermined position Px. Thereby, when the solar radiation amount S measured by the optical sensor 6 is equal to or more than the predetermined value Sth, the control unit 16 moves the blind 1 to the lower limit position P1 and then raises the blind 1 while the count value N is increased. It is determined whether or not the predetermined position Px is reached. When determining that the count value N has reached the predetermined position Px, the control unit 16 stops the rising of the blind 1. Therefore, the control unit 16 can control the blind 1 to the predetermined position Px, can suppress the solar radiation into the room, and can secure a suitable lighting property.

Next, the operation of the electric blind device A according to the present embodiment will be described with reference to FIG. FIG. 5 is a flow chart of the operation of the electric blind device A according to the present embodiment.

The optical sensor 6 measures the amount of solar radiation S at regular intervals (step S101). Then, the optical sensor 6 wirelessly or wiredly transmits the measured solar radiation amount S to the control device 13. The control unit 16 determines whether or not the solar radiation amount S measured by the optical sensor 6 is equal to or greater than a predetermined value Sth at regular intervals (step S102). When the solar radiation amount S measured by the optical sensor 6 is less than the predetermined value Sth, the control unit 16 executes the process of step S101 again. On the other hand, the control unit 16 lowers the blind 1 to the lower limit position P1 when the solar radiation amount S measured by the optical sensor 6 is the predetermined value Sth or more (step S103). At this time, the plurality of slats 1a are in the first fully closed state. The control unit 16 stops the lowering operation of the blind 1 when the blind 1 reaches the lower limit position P1. As a result, the opening O is closed by the blind 1.

Next, the control unit 16 rotates the plurality of slats 1a to a predetermined angle by raising the blind 1 at the lower limit position P1 to a predetermined position Px (step S104). For example, the control unit 16 reads a predetermined position Px from the storage unit 17 and determines whether the count value N has reached the predetermined position Px while raising the blind 1. When the control unit 16 raises the blind 1 from the lower limit position P1, the plurality of slats 1a start rotating from the first fully closed state to the second fully closed state.
When determining that the count value N has reached the predetermined position Px, the control unit 16 stops the rising of the blind 1. Here, the predetermined position Px is a position between the lower limit position P1 and the reverse position Pr. Therefore, the plurality of slats 1a will not be in the second fully closed state. With this, when the amount of solar radiation S measured by the optical sensor 6 is equal to or greater than the predetermined value Sth, the control unit 16 suppresses solar radiation into the room and secures optimum lighting from the plurality of slats 1a into the room. be able to.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes a design and the like within a range not departing from the gist of the present invention.

(Modification 1) In the above embodiment, the control unit 16 determines whether or not the blind 1 has reached the lower limit position P1 based on the count value N, but the present invention is not limited to this. For example, the electric blind device A may include a first sensor and a first switch that detect that the bottom rail 1b has reached the lower limit position P1. Then, when the first sensor or the first switch detects the bottom rail 1b during the lowering operation of the blind 1, the control unit 16 may determine that the blind 1 has reached the lower limit position P1. .. Further, the control unit 16 may determine whether the blind 1 has reached the lower limit position P1 based on the load of the motor 9.

(Modification 2) In the above embodiment, the method of setting the predetermined position Px by the operation unit 5 has been described, but the present invention is not limited to this. That is, in the present embodiment, the method of setting the predetermined position Px may be any method as long as the predetermined position Px can be set. For example, the user may input information on the predetermined position Px from the terminal device to the control device 13 wirelessly or by wire. Then, the control device 13 may set the predetermined position Px by storing the predetermined position Px obtained from the terminal device in the storage unit 17.

(Modification 3) In the above-mentioned embodiment, control part 16 controlled blind 1 to predetermined position Px based on count value N, but it is not limited to this. For example, the electric blind device A may include a second sensor or a second switch that detects that the bottom rail 1b has reached the predetermined position Px. Then, when the second sensor or the second switch detects the bottom rail 1b during the raising operation of the blind 1 in step S104, the control unit 16 determines that the blind 1 has reached the predetermined position Px. You may judge.

As described above, the electric blind device A according to the present embodiment controls the plurality of slats 1a in the first fully closed state to lower the blind 1 and places the plurality of slats 1a in the first fully closed state. The control device 13 for raising the blind 1 by controlling to the second fully closed state which has been reversed. When the amount of solar radiation S measured by the optical sensor 6 is equal to or larger than a predetermined value, the control device 13 moves the blind 1 to the lower limit position P1 and then moves the blind 1 to a predetermined position Px (first position). Let

According to such a configuration, the plurality of slats are controlled to the first fully closed state, the plurality of slats are lowered, and the plurality of slats are changed from the first fully closed state to the second fully closed state. In the electric blind device A that controls and raises the plurality of slats, it is possible to suppress the solar radiation into the room and to secure a suitable daylighting property.

Here, the electric blind device A has a configuration in which the blind 1 is moved up and down by the rotation of the shaft 8 and the ladder cord 2 is tilted and the plurality of slats 1a are rotated as the blind 1 moves up and down. That is, the electric blind A cannot independently control the lifting operation of the blind 1 and the rotating operation of the plurality of slats 1a. Here, when the electric blind device A lowers the blind 1, the plurality of slats 1a transition to the first fully closed state. When the opening O is closed by the blind 1, the blind 1 is in the first fully closed state. When the blind 13 is raised from the lower limit position P1 to open the opening O, the control device 13 causes the plurality of slats 1a to rotate from the first fully closed state and finally to the second fully closed state. Transition. Therefore, in the present embodiment, the blind 1 located at the lower limit position P1 rises to cause the plurality of slats 1a to rotate from the first fully closed state and finally transition to the second fully closed state. Utilizing the structural feature of the device A, the control device 13 moves the blind 1 to the lower limit position P1 and then moves the blind 1 when the solar radiation amount S measured by the optical sensor 6 is equal to or more than a predetermined value. Raise to a predetermined position Px. The predetermined position Px is, for example, a position from the first fully closed state of the plurality of slats 1a to the second fully closed state. As a result, the electric blind device A can suppress the solar radiation into the room and can secure a suitable lighting property.

Further, when the amount of solar radiation S becomes equal to or greater than the predetermined value Sth, the controller 13 lowers the plurality of slats 1a to the lower limit position P1 and then raises the plurality of slats 1a regardless of the current position of the blind 1. You may control to the predetermined position Px. As a result, the control device 13 can suppress the solar radiation into the room and secure a suitable lighting property at low cost.

Further, in the present embodiment, the control device 13 moves the blind 1 to the predetermined position Px when the solar radiation amount S is equal to or larger than the predetermined value Sth. As a result, the blind 1 does not always move according to the sun altitude. As a result, the control device 13 can suppress the annoyance of moving the blind 1 due to, for example, cloudiness. However, the present embodiment is not limited to this, and the control device 13 may change the predetermined position Px according to the value of the solar radiation amount S. In this case, the control device 13 changes the predetermined position Px between the lower limit position P1 and the reverse position Pr.

In addition, you may make it implement|achieve all or one part of the control part 16 in embodiment mentioned above with a computer. In this case, the computer may include a processor such as a CPU and a GPU, and a computer-readable recording medium. Then, a program for realizing all or a part of the functions of the control unit 16 by a computer is recorded in the computer-readable recording medium, and the program recorded in the recording medium is read by the processor and executed. It may be realized by Here, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, the "computer-readable recording medium" means to hold a program dynamically for a short time like a communication line when transmitting the program through a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system that serves as a server or a client in that case may hold a program for a certain period of time. Further, the program may be for realizing a part of the above-mentioned functions, or may be a program for realizing the above-mentioned functions in combination with a program already recorded in a computer system, It may be realized using a programmable logic device such as FPGA.

A Electric blind device 1 Blind 1a Slat 2 Ladder cord 3 Elevating cord 6 Optical sensor 13 Control device

Claims (5)

An electric blind device for electrically moving a blind having a plurality of slats,
An optical sensor for measuring the amount of solar radiation S,
The blinds are lowered by controlling the plurality of slats to a first fully closed state, and the blinds are controlled by controlling the plurality of slats to a second fully closed state which is the inverted state of the first fully closed state. Control device to raise,
Equipped with
The electric blind device, wherein the control device moves the blind to a first position after moving the blind to a lower limit position when the solar radiation amount S is equal to or more than a predetermined value. The control device controls the plurality of slats from the first fully closed state to the second fully closed state by raising the blind from the lower limit position to a second position,
The electric blind device according to claim 1, wherein the first position is set to a position between the lower limit position and the second position. The electric blind device according to claim 1 or 2, wherein the control device moves the blind to the lower limit position or the upper limit position when the solar radiation amount S is below the predetermined value. When the amount of solar radiation S is equal to or greater than the predetermined value, the control device lowers the blind to the lower limit position and then raises the blind to the first position regardless of the current position of the blind. The electric blind device according to claim 1, wherein the electric blind device is controlled according to claim 1. A blind including a plurality of slats, and controlling the plurality of slats to a first fully closed state to lower the blinds; and a second totally slanted state of the plurality of slats from the first fully closed state. A method for controlling an electric blind device for controlling a closed state to raise the blind, comprising:
When the amount of solar radiation S measured by the optical sensor is equal to or more than a predetermined value, a first step of moving the blind to a lower limit position,
A second step of raising the blind reaching the lower limit position in the first step to control the blind to a predetermined position;
Control method including.

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