JP2023096400A - Electrically-driven sun shading device and electrically-driven sun shading system - Google Patents

Abstract

To provide an electrically-driven sun shading device and an electrically-driven sun shading system that enable reduction of standby power.SOLUTION: A shading member control unit 7 includes: a motor 10 that operates a solar radiation shading member; a microcomputer 31 that controls the operation of the motor 10; a capacitor 50 connected to the microcomputer 31; a power supply circuit 28 that supplies power to the motor 10, the microcomputer 31, and the capacitor 50 from the supply of a commercial AC power supply 17; and a relay 27 connected to the power supply circuit 28. The microcomputer 31 is configured to be able to control the relay 27. The relay 27 is controlled by the microcomputer 31 to be in one of a conductive state in which the commercial AC power supply 17 can be supplied to the power supply circuit 28 and a non-conductive state in which the supply of the commercial AC power supply 17 to the power supply circuit 28 is cut off. When the relay 27 is in the non-conductive state, the capacitor 50 supplies the power stored therein to the microcomputer 31.SELECTED DRAWING: Figure 2

Description

The present invention relates to an electric solar shading device and an electric solar shading system.

Conventionally, an electric solar radiation shielding device includes a solar radiation shielding material and a shielding material control unit that controls the operation of the solar radiation shielding material (see, for example, Patent Document 1). The shielding material control unit includes a motor that operates the solar radiation shielding material, a microcomputer that controls the operation of the motor, and a power supply circuit that supplies power to the motor and the microcomputer based on supply of commercial power, for example. The power supply circuit includes, for example, a power transformer, a rectifier circuit, a stabilization circuit, and the like. In such an electric solar radiation shielding device, the solar radiation shielding material is operated by driving a motor based on an input of a command signal from an operation switch or the like.

JP 2008-163577 A

In the electric solar radiation shielding device of Patent Literature 1, the power supplied to the primary coil of the high-power transformer that supplies power to the motor in the power supply circuit is cut off during standby to reduce standby power. However, since the primary coil of the low-power transformer that supplies power to the microcomputer in the power supply circuit needs to be continuously supplied with power even during standby, there is a problem that standby power cannot be sufficiently reduced.

An electric solar radiation shielding device that solves the above problems is an electric solar radiation shielding device that includes a solar radiation shielding material and a shielding material control unit that controls the operation of the solar radiation shielding material based on a command signal output from a command source. The shielding material control unit includes a motor that operates the solar radiation shielding material, a motor control unit that controls the operation of the motor, an electric storage member connected to the motor control unit, and based on power supply, A power supply circuit for supplying power to the motor, the motor control unit, and the power storage member, and a relay connected to the power supply circuit, the relay being conductive to enable supply of the power to the power supply circuit. and a non-conducting state in which the supply of power to the power supply circuit is interrupted. The motor control unit is capable of controlling the relay, and brings the non-conducting relay into the conducting state based on the signal output from the command source.

In the above electric solar radiation shielding device, when a time period during which no command signal from the command source is input to the shielding material control unit reaches a predetermined time, the motor control unit switches the relay in the conductive state. It may be configured to be in the non-conducting state.

In the above electric solar radiation shielding device, the power storage member may store electric power supplied from the power supply circuit when the relay is in the conducting state.
In the above electric solar radiation shielding device, when the motor is driven by power supply from the power supply circuit, power supply may also be supplied to the power storage member from the power supply circuit.

In the above electric solar radiation shielding device, when the voltage of the electricity storage member falls below a preset specified value, the motor control unit puts the relay in the conducting state so that power can be supplied from the power supply circuit to the electricity storage member. state.

An electric solar shading system for solving the above problems includes a plurality of electric solar shading devices each having a solar shading material and a shading material control unit for controlling the operation of the solar shading material based on a command signal; an output command source, wherein the shielding material control unit of each of the electric solar radiation shielding devices includes a motor that operates the solar radiation shielding material, and a motor control unit that controls the operation of the motor. a power storage member connected to the motor control unit; a power supply circuit that supplies power to the motor, the motor control unit, and the power storage member based on the supply of power; a relay connected to the power supply circuit; wherein the relay is in either a conductive state that enables the supply of the power to the power supply circuit or a non-conductive state that cuts off the supply of the power to the power supply circuit, and the power storage member supplies electric power stored by itself to the motor control unit when the relay is in the non-conducting state, and the motor control unit can control the relay, and responds to a signal output from the command source. Based on this, the relay in the non-conducting state is brought into the conducting state.

The electric solar shading device and electric solar shading system of the present disclosure exhibit the effect of reducing standby power.

1 is a block diagram showing a schematic configuration of an electric solar shading system according to an embodiment; FIG. It is a block diagram which shows the electrical structure of the shielding material control part in the electric solar radiation shielding apparatus of the same form. It is a block diagram which shows the power supply circuit in the shielding material control part of the same form. It is a flowchart which shows the operation|movement of the shielding material control part in the same form. It is a flowchart which shows the operation|movement of the shielding material control part in the same form.

An embodiment of an electric solar shading device and an electric solar shading system will be described below with reference to the drawings.
As shown in FIG. 1 , the electric solar shading system S of this embodiment includes a floor controller 1 , a central control device 3 such as a personal computer, a plurality of electric solar shading devices 5 , and an operation switch 8 . A plurality of electric solar radiation shielding devices 5 are installed, for example, on a plurality of floors of a building. The electric solar radiation shielding device 5 is, for example, a horizontal electric blind. A floor controller 1 is installed for each floor. A floor controller 1 on each floor is connected to a central control unit 3 via a communication line 2a.

Each of the plurality of electric solar radiation shielding devices 5 includes a headbox 6 , a solar radiation shielding material 11 , and a shielding material control section 7 that controls the operation of the solar radiation shielding material 11 . The solar radiation shielding material 11 is, for example, a slat suspended from the headbox 6 . The shielding material control unit 7 is housed inside the headbox 6 .

The floor controller 1 is connected via a communication line 2c to a shielding material control section 7 of a plurality of electric solar radiation shielding devices 5 installed on the floor. The operation switch 8 is connected to the shielding material control unit 7 of the electric solar radiation shielding device 5 installed on the floor through the communication line 2d. A commercial AC power supply 17 is supplied to the floor controller 1 and the shielding material control unit 7 via a distribution board 9 . The shielding material control unit 7 of each electric solar radiation shielding device 5 controls the operation of the solar radiation shielding material 11 based on a command signal input from the central controller 3 or the operation switch 8 .

The central controller 3 performs automatic solar radiation control for each electric solar radiation shielding device 5 . Specifically, the central controller 3 outputs a command signal to the target electric solar radiation shielding device 5 based on a preset program. The program is set based on the location, direction, time, etc. where the electric solar radiation shielding device 5 is installed. For this reason, the electric solar radiation shielding device 5 installed in a place where the sun does not shine for a long period of time reduces the frequency of input of the command signal by the automatic solar radiation control. Also, during the time period from sunset to sunrise, the frequency of input of the command signal for automatic solar radiation control to each electric solar radiation shielding device 5 decreases. The automatic solar radiation control by the central control unit 3 is not limited to that based on a preset program. For example, control based on a sensor signal from a sunshine sensor or the like, an analysis result of sky image analysis, or the like, or control combining them with a preset program may be performed.

(Configuration of shielding material control unit 7)
As shown in FIG. 2, the shielding material control unit 7 includes a motor 10 for operating the solar radiation shielding material 11, a relay 27, a power supply circuit 28, a microcomputer 31 as a motor control unit, and a capacitor 50 as a storage member. , provided. Motor 10 is, for example, a DC motor. A motor 10 is provided in the headbox 6 .

The microcomputer 31 controls the operation of the motor 10 based on command signals output from the command source 12 . 2, the command source 12 is the central control unit 3 or the operation switch 8. As shown in FIG. The solar radiation shielding material 11 is moved up and down or its angle is adjusted by the operation of the motor 10 .

The power supply circuit 28 supplies DC power to the motor 10 , the microcomputer 31 and the capacitor 50 based on the commercial AC power supply 17 . Specifically, the power supply circuit 28 is supplied with the commercial AC power supply 17 via the connector 26 and the relay 27 . The power supply circuit 28 converts the commercial AC power supply 17 into a DC power supply of a required voltage. The power supply circuit 28 supplies DC power to the microcomputer 31, the motor drive circuit 32, and the capacitor 50, respectively. A motor drive circuit 32 controls the operation of the motor 10 based on a motor control signal output from the microcomputer 31 .

The relay 27 is, for example, a contactless relay. A contactless relay is also called a solid state relay (SSR). The relay 27 is connected to the power circuit 28 . Note that the relay 27 is not limited to a non-contact relay, and may be a contact relay (mechanical relay), for example.

The microcomputer 31 is configured to be able to control the relay 27 . Under the control of the microcomputer 31, the relay 27 is in either a conductive state that enables the supply of the commercial AC power 17 to the power supply circuit 28 or a non-conductive state that cuts off the supply of the commercial AC power 17 to the power supply circuit 28. state. Specifically, the relay 27 becomes conductive when the control signal PS is input from the microcomputer 31, and becomes non-conductive, operating as a normally open contact, when the control signal PS is not input. That is, the relay 27 supplies the commercial AC power 17 supplied to the connector 26 to the power supply circuit 28 when the control signal PS is input, and supplies the commercial AC power 17 to the power supply circuit 28 when the control signal PS is not input. cut off the supply of The relay 27 has a known function to start supplying AC power to the power supply circuit 28 at the zero cross point of the AC power supply, ie, at the timing when the AC power supply voltage becomes an intermediate voltage.

Capacitor 50 is connected to microcomputer 31 . As the capacitor 50, one having a capacitance necessary for operating the microcomputer 31 is used. Note that the operating voltage of the microcomputer 31 is, for example, 5 V or less. The capacitor 50 is charged by the DC power supplied from the power supply circuit 28 . Capacitor 50 supplies power stored by itself to microcomputer 31 when relay 27 is in a non-conducting state, that is, when supply of commercial AC power supply 17 to power supply circuit 28 is interrupted.

A command signal supplied from the command source 12 to the communication port 34 of the shielding material control unit 7 is input to the microcomputer 31 via the communication interface 35 . A ROM 36, a RAM 37 and an EEPROM 38 are connected to the microcomputer 31, respectively. The microcomputer 31 operates based on programs stored in the ROM 36 . The RAM 37 temporarily stores the processing result of the microcomputer 31 . The EEPROM 38 stores current data such as the position and angle of the solar radiation shielding material 11 in the electric solar radiation shielding device 5 .

A status display LED 39 connected to the microcomputer 31 displays the operation mode of the electric solar radiation shielding device 5, that is, whether it is in the normal mode or the energy saving mode. Also, a DIP switch 40 connected to the microcomputer 31 can set address information and the like of the electric solar radiation shielding device 5 .

(Specific Configuration of Power Supply Circuit 28)
FIG. 3 shows a specific configuration of the power supply circuit 28 of the shielding material control section 7. As shown in FIG. The power supply circuit 28 includes a high-power transformer 41 that supplies operating current to the motor drive circuit 32 and a low-power transformer 42 that supplies operating current to the microcomputer 31 and the like. A commercial AC power supply 17 is supplied via a relay 27 to the primary side coils of the high-power transformer 41 and the low-power transformer 42 .

The capacitor 50 is connected in parallel with the microcomputer 31 . Specifically, the negative terminal of the capacitor 50 is connected to the ground, and the positive terminal of the capacitor 50 is connected to the stabilizing circuit 46 and the microcomputer 31 .

When the control signal PS is input from the microcomputer 31 , the relay 27 supplies the commercial AC power supply 17 to the primary coils of the high-power transformer 41 and the low-power transformer 42 . Also, the relay 27 cuts off the supply of the commercial AC power supply 17 to the primary side coils of the high-power transformer 41 and the low-power transformer 42 when the control signal PS is not input. Therefore, when the control signal PS is not input to the relay 27, power consumption in the large power transformer 41 and the small power transformer 42 is eliminated.

The high-power transformer 41 steps down the commercial AC power supply 17 to a required voltage and outputs the voltage. The AC output voltage of the high-power transformer 41 is converted into a DC voltage by the rectifying circuit 43 and the stabilizing circuit 44 and supplied to the motor driving circuit 32 .

The low-power transformer 42 steps down the commercial AC power supply 17 to a required voltage and outputs the voltage. The AC output voltage of the low-power transformer 42 is converted into a DC voltage by the rectifying circuit 45 and the stabilizing circuit 46 and supplied to the capacitor 50 and the microcomputer 31 .

(Operation of shielding material control unit 7)
The shielding material control unit 7 of each electric solar radiation shielding device 5 controls the solar radiation shielding material 11 in either the normal mode or the energy saving mode based on the command signal output from the command source 12 . Note that the command source 12 selectively outputs a command signal to the electric solar radiation shielding device 5 to be controlled among the plurality of electric solar radiation shielding devices 5, or outputs a command signal to the plurality of electric solar radiation shielding devices 5. batch output.

In the normal mode, the control signal PS is input to the relay 27 and the commercial AC power supply 17 is supplied to the primary coils of the large power transformer 41 and the small power transformer 42 . Then, the motor drive circuit 32 operates based on the command signal output from the command source 12, and the solar radiation shielding material 11 is moved up and down or adjusted in angle. Further, when the motor drive circuit 32 operates to drive the motor 10, power is also supplied from the power supply circuit 28 to the capacitor 50, so that the capacitor 50 is charged.

As shown in FIG. 4, in the normal mode, the microcomputer 31 monitors whether or not a command signal is received from the command source 12 (step S1).
Next, in step S2, the microcomputer 31 determines whether the conditions for switching to the energy saving mode are satisfied. As a condition for shifting to the energy-saving mode, for example, the time during which no command signal is input from the command source 12 reaches a preset specified time. Note that the specified time is set to a time between several tens of seconds and several minutes, for example.

If the condition for shifting to the energy saving mode is not satisfied in step S2, the process returns to step S1. If the condition for shifting to the energy saving mode is satisfied in step S2, the process shifts to step S3.

In step S<b>3 , the microcomputer 31 scans current data such as the position and angle of the solar radiation shielding material 11 and stores the scan results in the EEPROM 38 . In step S3, if the solar radiation shielding material 11 is in operation, the microcomputer 31 scans the current data after the operation is stopped.

In the next step S4, the microcomputer 31 stops outputting the control signal PS to the relay 27. FIG. Then, the relay 27 becomes non-conducting, and the supply of the commercial AC power supply 17 to the primary side coils of the high power transformer 41 and the low power transformer 42 is cut off.

In the next step S5, the microcomputer 31 transmits the current data scanned in step S3 to the central control unit 3 via the floor controller 1, and ends the process of shifting to the energy saving mode. In the energy saving mode, the microcomputer 31 operates with power supplied from the capacitor 50 .

FIG. 5 shows the operation of the microcomputer 31 in the energy saving mode and when shifting from the energy saving mode to the normal mode.
As shown in the figure, at step S11, the microcomputer 31 monitors whether a command signal is received from the command source 12 or not. In this state, when a command signal is input from the command source 12 to the shielding material control unit 7, if the command signal is a signal for commanding data scanning (steps S12 and S13), the microcomputer 31 stores the data in the EEPROM 38. Current data is read out (step S14). Then, the microcomputer 31 transmits the current data to the central control device 3 via the floor controller 1 in step S15.

When a signal instructing to cancel the energy-saving mode is input in step S12, the microcomputer 31 proceeds to step S16 and determines whether or not the command signal includes an operation command signal for the solar radiation shielding material 11 as well.

Then, when the operation command signal is included, the microcomputer 31 temporarily stores the operation command signal in the RAM 37 (step S17).
Next, in step S18, the microcomputer 31 controls the relay 27 to be conductive. That is, the microcomputer 31 inputs the control signal PS to the relay 27 . Then, the relay 27 becomes conductive, and the commercial AC power supply 17 is supplied to the primary coils of the large power transformer 41 and the small power transformer 42 . As a result, the motor driving circuit 32, the microcomputer 31 and the capacitor 50 are switched to the normal mode in which power is supplied.

In the next step S19, the microcomputer 31 drives the solar radiation shielding material 11 based on the operation command signal stored in the RAM 37 in step S17. At this time, power is supplied from the power supply circuit 28 to the motor drive circuit 32 to drive the motor 10, and at the same time power is supplied to the capacitor 50 from the power supply circuit 28 so that the capacitor 50 is charged.

Further, the microcomputer 31 stores the current data of the solar radiation shielding material 11 in the EEPROM 38 when the control operation of the solar radiation shielding material 11 is completed. After that, the microcomputer 31 transfers the current data to the central control unit 3 via the floor controller 1 in step S15.

In step S16, if the command signal does not include an operation command signal for the solar radiation shielding material 11, the process proceeds to step S18, but the process of step S19 is not performed.
In the shielding material control section 7 of each electric solar radiation shielding device 5 , the microcomputer 31 monitors the voltage of the capacitor 50 . In the energy saving mode, the microcomputer 31 outputs a control signal PS to the relay 27 when the voltage of the capacitor 50 falls below a preset specified value. Then, the relay 27 becomes conductive, and power is supplied from the power supply circuit 28 to the microcomputer 31 and the capacitor 50 . Thereby, the capacitor 50 is charged so that the voltage becomes equal to or higher than the specified value.

Effects of the present embodiment will be described.
(1) When the relay 27 is in a non-conducting state, power supply from the commercial AC power supply 17 to the power supply circuit 28 is interrupted, so power consumption in the power supply circuit 28 can be reduced. When the relay 27 is in a non-conducting state, the capacitor 50 supplies the power stored by itself to the microcomputer 31 . As a result, the microcomputer 31 can be operated by the power of the capacitor 50 while the power supply from the commercial AC power supply 17 to the power supply circuit 28 is cut off. In addition, the microcomputer 31 brings the non-conducting relay 27 into the conducting state based on the signal output from the command source 12 . As a result, when the solar radiation shielding material 11 is operated based on the command signal from the command source 12, the relay 27 is brought into a conductive state, so that power can be supplied to the motor 10. FIG.

Further, the electric solar radiation shielding system S of this embodiment includes a plurality of electric solar radiation shielding devices 5 each having the solar radiation shielding material 11 and the shielding material control unit 7 . As a result, the greater the number of electric solar shading devices 5 provided in the electric solar shading system S, the more remarkable the energy saving effect can be obtained.

As a comparative configuration different from the above embodiment, a configuration in which a power supply controller is provided separately from each electric solar radiation shielding device 5 is considered. In the comparative configuration, the power controller is connected to each electric solar radiation shielding device 5 , and the power controller controls the relay 27 of each electric solar radiation shielding device 5 based on the command signal from the command source 12 . Compared to the comparative configuration, in the above-described embodiment, the power supply controller and the power supply line connecting the power supply controller and each electric solar radiation shielding device 5 are not required, and the work of connecting the power supply line to each electric solar radiation shielding device 5 is eliminated. can be eliminated.

(2) When the time during which no command signal is input from the command source 12 reaches a preset specified time, the microcomputer 31 changes the conductive state of the relay 27 to a non-conductive state. As a result, for example, when the frequency of input of command signals from the central control unit 3 due to automatic solar radiation control is low, such as at night, power consumption in the power supply circuit 28 can be suppressed by keeping the relay 27 in a non-conducting state for a long period of time. Become.

(3) The capacitor 50 stores electric power supplied from the power supply circuit 28 when the relay 27 is in a conducting state. This makes it possible to maintain the voltage of the capacitor 50 .
(4) When the motor 10 is driven by the power supply circuit 28, the power supply circuit 28 also supplies the capacitor 50 with power. Thereby, the voltage of the capacitor 50 can be preferably maintained.

(5) When the voltage of the capacitor 50 falls below a predetermined value, the microcomputer 31 turns on the relay 27 so that the power supply circuit 28 can supply power to the capacitor 50 . This makes it possible to charge the capacitor 50, for example, when the non-conducting state of the relay 27 continues for a long time and the voltage of the capacitor 50 drops.

This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
・In the shielding material control unit 7 of the above embodiment, the capacitor 50 is used as the electricity storage member connected to the microcomputer 31, but the electricity storage member is not limited to this. may be used.

- The operation of the shielding material control unit 7 in the above embodiment is an example, and can be changed as appropriate.
- In the above-described embodiment, the microcomputer 31 may change the non-conducting relay 27 to the conducting state based on the input of the operation command signal to the shielding material control section 7 . In this case, a plurality of operation command signals may be output by pressing the button of the operation switch 8 once. This makes it possible to reliably execute the operation of the solar radiation shielding material 11 based on the operation command signal.

Further, when the operation command signal is output from the central control unit 3, a preliminary signal is output before the operation command signal, and the microcomputer 31 makes the relay 27 conductive based on the input of the preliminary signal. good too. This also makes it possible to reliably execute the operation of the solar radiation shielding material 11 based on the operation command signal.

- In the above embodiment, the relay 27 may be configured to be conductive when the control signal PS is not input, and to be non-conductive when the control signal PS is input.
- In the above embodiment, an AC motor may be used as the motor 10 .

- In the above embodiment, the central control device 3 or the floor controller 1 may be configured to monitor the voltage of the capacitor 50 in each electric solar radiation shielding device 5 .
- Although the electric solar shading system S of the above embodiment includes a plurality of electric solar shading devices 5 , the present invention is not limited to this, and may be applied to an electric solar shading system having only one electric solar shading device 5 .

- In the above-described embodiment, the power source connected to the power circuit 28 via the relay 27 is the commercial AC power source 17, but it is not particularly limited to this. For example, the power supply connected to the power supply circuit 28 via the relay 27 may be a solar cell or a battery storing electric power generated by the solar cell.

- In the above-described embodiment, the command source 12 is the central control unit 3 or the operation switch 8, but the command source 12 may include an external interlocking unit, which will be described later, for example. For example, the electric solar radiation shielding system S may be configured to include an external interlocking unit that receives signals (emergency signals, etc.) from other devices. The signal from the other device is, for example, a serial signal such as RS485 standard or RS232C standard or a contact signal. The external interlocking unit outputs a command signal to the shielding material control section 7 of each electric solar radiation shielding device 5 based on a signal from another device.

- In the above embodiment, the power storage member connected to the power supply circuit 28 and the motor drive circuit 32 may be provided separately from the capacitor 50 . For example, the power storage member is connected to a stabilizing circuit 44 connected to a large power transformer 41 in the power supply circuit 28 and to the motor drive circuit 32 . The storage member supplies power to the motor drive circuit 32 when the relay 27 is in a non-conducting state. That is, the motor 10 is driven by the electric power of the electricity storage member when the relay 27 is in the non-conducting state. The electric storage member is capable of storing electric power required to drive the motor 10. For example, an electric double layer capacitor, a lithium ion battery, or the like can be used as the electric storage member.

According to such a configuration, even when the relay 27 is rendered non-conductive and the power supply to the power supply circuit 28 is interrupted, the electric power of the storage member can be used to drive the motor 10 . Therefore, power consumption in the power supply circuit 28 can be further reduced.

Further, a configuration may be adopted in which power is supplied to both the microcomputer 31 and the motor drive circuit 32 from one power storage member when the relay 27 is in a non-conducting state.
- The configuration of the electric solar shading device 5 of the above embodiment may be used for electric vertical blinds, electric shades, electric roller blinds, electric curtains, electric awnings, and the like.

- The embodiments and modifications disclosed this time are exemplifications in all respects, and the present invention is not limited to these exemplifications. That is, the scope of the present invention is indicated by the claims, and is intended to include all changes within the meaning and range of equivalents to the claims.

S... Electric solar radiation shielding system 5... Electric solar radiation shielding device 7... Shielding material control unit 10... Motor 11... Solar radiation shielding material 12... Command source 17... Commercial AC power supply (power supply)
27... Relay 28... Power supply circuit 31... Microcomputer (motor control unit)
50... Capacitor (storage member)

Claims (6)

a solar shielding material;
an electric solar radiation shielding device comprising: a shielding material control unit that controls the operation of the solar radiation shielding material based on a command signal output from a command source,
The shielding material control unit is
a motor that operates the solar radiation shielding material;
a motor control unit that controls the operation of the motor;
a power storage member connected to the motor control unit;
a power supply circuit that supplies power to the motor, the motor control unit, and the power storage member based on the supply of power;
and a relay connected to the power supply circuit,
The relay is in either a conducting state that enables the supply of the power to the power supply circuit or a non-conducting state that cuts off the supply of the power to the power supply circuit,
the power storage member supplies electric power stored by itself to the motor control unit when the relay is in the non-conducting state;
The motor control unit is capable of controlling the relay, and brings the non-conducting relay into the conducting state based on a signal output from the command source.
Electric solar shading device. When the time during which no command signal from the command source is input to the shielding material control unit reaches a predetermined time, the motor control unit changes the conductive state of the relay to the non-conductive state.
The electric solar shading device according to claim 1. The power storage member stores power supplied from the power supply circuit when the relay is in the conductive state.
The electric solar shading device according to claim 1 or 2. When the motor is driven by power supply from the power supply circuit, the power storage member is also supplied with power from the power supply circuit.
The electric solar shading device according to claim 3. When the voltage of the power storage member falls below a preset specified value, the motor control unit places the relay in the conductive state so that power can be supplied from the power supply circuit to the power storage member.
The electric solar radiation shielding device according to claim 3 or 4. a plurality of electric solar radiation shielding devices each having a solar radiation shielding material and a shielding material control unit that controls the operation of the solar radiation shielding material based on a command signal;
a command source that outputs the command signal;
A motorized solar shading system comprising:
The shielding material control unit of each electric solar radiation shielding device,
a motor that operates the solar radiation shielding material;
a motor control unit that controls the operation of the motor;
a power storage member connected to the motor control unit;
a power supply circuit that supplies power to the motor, the motor control unit, and the power storage member based on the supply of power;
and a relay connected to the power supply circuit,
The relay is in either a conducting state that enables the supply of the power to the power supply circuit or a non-conducting state that cuts off the supply of the power to the power supply circuit,
the power storage member supplies electric power stored by itself to the motor control unit when the relay is in the non-conducting state;
The motor control unit is capable of controlling the relay, and brings the non-conducting relay into the conducting state based on a signal output from the command source.
Motorized solar shading system.

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