JP5581185B2 - Load control switch and load control switch system - Google Patents

Description

  The present invention provides a load control switch that can be improved in function so that a user can easily have a wireless signal reception function even if the electrician is not qualified, and to remotely control the load control switch. The present invention relates to a load control switch system using a remote control device.

  In recent years, a load control switch provided on a wall of a building or the like provided with a wireless signal receiving function has been proposed so that a load such as a ventilation fan or a lighting device can be turned on and off by a remote control device or the like. Assuming that a load control switch that simply controls on / off of a load was originally installed, replacing such a load control switch with one having a radio signal receiving function requires wiring work. Therefore, the user cannot replace it by himself and has to ask a person who has the qualification of an electrician.

  On the other hand, in recent years, as called DIY (Do It Yourself), it has become popular for users to purchase parts at home centers and to replace parts themselves. In the current system, for example, as described in Non-Patent Document 1, the user can only select the color and design of the operation handle in a home center and the like, and the load control switch body cannot be freely replaced. The annoyance remains.

  Further, in the case of an electronic switch having a semiconductor switch element such as a triac as a main switch element, it is possible to control on / off of a load in accordance with a signal output from a radio signal receiving device or a human body sensor. . Therefore, if an external signal input terminal is provided in advance in an electronic load control switch and a radio signal receiver or a human body sensor can be connected to the electronic load control switch by the user himself / herself, the load control switch can be manufactured at low cost. Function can be improved.

  Furthermore, in the conventional lighting system, there is disclosed a lighting system capable of simultaneously controlling a plurality of lighting devices arranged in the space with a single remote controller and controlling the plurality of lighting devices individually. (For example, refer to Patent Document 1). However, in such a conventional lighting system, when the user performs all extinction of lights or dimming control using the remote control device, a response signal is sent from the lighting device that has received the control signal to the remote control device. Is not transmitted, the communication establishment / non-establishment state between the illumination and the remote control device cannot be confirmed. For this reason, even when multiple lights cannot be completely turned off or dimming controlled, the user can mistake the one that can completely turn off the lights or dimming by simply pressing a button on the remote control device. There is.

JP-A-8-8068

Panasonic Electric Works Electrical Equipment Catalog 2010-2012 Page 19

  The present invention has been made in view of the above-described conventional problems, and provides a load control switch that can be improved in function so that a user can easily have a wireless signal reception function without wiring work. And it aims at providing the load control switch system which also improved the communication reliability between this load control switch and a remote control device.

  In order to achieve the above object, a load control switch according to the present invention is directly attached to a mounting frame installed on a wall surface of a building, and is detachably attached to a terminal module to which an electric wire is connected, and the terminal module, An open / close function module having an electronic switch function for controlling on / off of a load in accordance with a control signal input from the outside, and a radio that is detachably attached to the open / close function module and transmits / receives a signal to / from a remote control device An operation handle having a signal transmission / reception circuit and a control circuit is provided.

  In addition, when the radio signal transmission / reception circuit receives a control signal from the remote control device, the control circuit of the operation handle preferably returns a response signal indicating reception confirmation of the control signal to the remote control device.

  In order to achieve the above object, a load control switch system according to the present invention is a load control switch system that remotely controls a load control switch using a remote control device, and the load control switch is provided on a wall of a building. A terminal module that is directly attached to an installed mounting frame and to which an electric wire is connected, and an electronic switch function that is detachably attached to the terminal module and that controls on / off of a load according to a control signal input from the outside An open / close function module, a radio signal transmission / reception circuit that is detachably attached to the open / close function module, and transmits / receives a signal to / from the remote control device, and an operation handle having a control circuit. A control signal output unit for generating a control signal for controlling the open / close function module; and the open / close function Load control by the open / close function module according to a transmission / reception unit for transmitting / receiving a radio signal to / from the radio signal transmission / reception circuit and a signal transmission / reception result between the transmission / reception unit and the radio signal transmission / reception circuit to remotely control the module. And a load control state notifying unit for notifying the user of the state.

  In the load control switch system, when the radio signal transmitting / receiving circuit receives a control signal from the remote control device, the control circuit of the operation handle returns a response signal indicating confirmation of reception of the control signal to the remote control device. It is preferable to do.

  In the load control switch system, when the transmission / reception unit receives a response signal or cannot receive a response signal, the load control state notification unit updates the content of the load control state through visual or auditory sense. It is preferable to do.

  In the load control switch system, when the control signal output unit of the remote control device cannot receive a response signal within a predetermined time after transmitting the control signal to the load control switch, the control signal is transmitted to the load control switch. It is preferable to retransmit to the switch.

  In the load control switch system, when the control signal output unit of the remote control device does not receive a response signal even if the control signal is retransmitted to the load control switch, the control signal output unit notifies the load control state notification unit. It is preferable to update the contents.

  In the load control switch system, the load control switch system includes a plurality of remote control devices or a plurality of load control switches, and the control signal output unit of the remote control device or the control circuit of the load control switch includes a control signal. Is received, it is preferable to relay the control signal to another load control switch.

  In the load control switch system, the radio signal transmission / reception circuit transmits a load control state signal of the open / close function module to the remote control device every predetermined period, and a control signal output unit of the remote control device transmits the transmission / reception When the unit receives the load control state signal, it is preferable to update the content of the notification of the load control state notification unit based on the load control state signal.

  In the load control switch system, it is preferable that the wireless signal transmission / reception circuit and the control circuit are supplied with driving power from a primary battery built in the operation handle.

  In the load control switch system, the operation handle includes a power generation element and a secondary battery for charging electric power generated by the power generation element, and the radio signal transmission / reception circuit and the control circuit included in the operation handle. The driving power is preferably supplied from the power generation element or the secondary battery.

  According to the present invention, the load control switch is divided into a terminal module to which an electric wire is connected and an opening / closing function module that is detachably attached to the terminal module, and a radio signal transmission / reception circuit is provided on the operation handle. Therefore, the user can select only the operation handle or a combination of the opening / closing function module and the operation handle and perform replacement without performing wiring work.

  Also, the load control switch and the remote control device are connected by wireless communication, and the load control switch that has received the control signal from the remote control device returns a response signal for confirmation of reception to the remote control device. Therefore, communication reliability between the load control switch and the remote control device can be improved, and the user can check lighting on / off control, dimming control, and the like via the display unit.

The figure which shows the structure of the load control switch system which concerns on one Embodiment of this invention. The sequence diagram in the case of returning a response signal from the load control switch to the remote control device in the load control switch system. FIG. 6 is a sequence diagram when a response signal is not returned from the load control switch to the remote control device in the load control switch system. Explanatory drawing in the case of relay-transmitting a control signal using another remote control apparatus in the load control switch system. The sequence diagram in the case of periodically transmitting an open / close state signal from the open / close function module to the remote control device. The figure which shows the structure of the 1st modification of the load control switch system. The figure which shows the structure of the 2nd modification of the load control switch system.

  A load control switch system according to an embodiment of the present invention will be described. FIG. 1 is a diagram showing a basic configuration of a load control switch system A according to the present embodiment, and includes a load control switch 1 and a remote control device 7. The load control switch 1 includes, for example, a terminal module 2 to which an electric wire 5 such as a VVF (Vinyl insulated Vinyl sheathed Flat-type cable) is connected, an opening / closing function module 3 having a switch function, and an operation handle. 4 is configured.

  The terminal module 2 includes an inlet 21 into which the core wire 51 of the electric wire 5 from which the insulation coating has been removed is inserted, and an outlet 22 into which the socket 31 of the open / close function module 3 is inserted. The inlet 21 is the same as that of a conventional load control switch that is automatically locked when the core wire 51 of the electric wire 5 is inserted. The structure of the outlet 22 is not particularly limited, and may be a simple electrical contact or a structure like an outlet. In the latter case, a sliding shutter may be provided on the outlet 22 in order to prevent electric shock. In FIG. 1, the terminal module 2 is exemplified by a two-wire type, but may be a three-wire type. The terminal module 2 is installed by an electrician who has specialized knowledge, such as an electrician. According to the configuration of this embodiment, once the terminal module 2 is installed, it is not normally replaced. Note that the terminal module 2 is smaller than the conventional load control switch because the open / close function module 3 is separated. For this reason, the adapter 6 or the like is used when it is attached to a conventional attachment frame.

  FIG. 1 exemplifies an electronic switch having a semiconductor switch element as a main switch element as the open / close function module 3, for example. A push-on / push-off switch 33 operated by the operation handle 4 is provided on the mounting surface 32 to which the operation handle 4 of the opening / closing function module 3 is mounted. Further, on the mounting surface 32 of the opening / closing function module 3, a support shaft 34 that is fitted to a bearing 42 provided on the back surface 41 of the operation handle 4 is provided. The back surface 41 of the operation handle 4 is in contact with the push-on / push-off switch 33 in a state where the bearing 42 is fitted to the support shaft 34, that is, in a state where the operation handle 4 is mounted on the opening / closing function module 3. A projection 43 is provided. The operation handle 4 is normally held biased in one direction by a spring of a push-on / push-off switch 33 formed asymmetrically with respect to the support shaft 34 (or the bearing 42).

  As is well known from Non-Patent Document 1, the size of the operation handle 4 is determined by the number of load control switches attached to the attachment frame. For example, when only one load control switch is attached to the attachment frame, an operation handle having a size substantially the same as a rectangular opening formed in the decorative plate is used so as to be called a single. In addition, when two load control switches are attached to the attachment frame, an operation handle having a size that is ½ of the height dimension of the rectangular opening formed in the decorative plate is used (width), as called double. Directional dimensions are the same). Furthermore, when three load control switches are attached to the attachment frame, an operation handle having a size of 1/3 of the height dimension of the rectangular opening formed in the decorative plate is used as a triple. Needless to say, you can choose from multiple colors and designs as before.

  A circuit board 35 is provided inside the open / close function module 3, and a control circuit 36 composed of a semiconductor switch element such as a triac is mounted on the circuit board 35. When the operation handle 4 is operated by the user, the push-on / push-off switch 33 is turned on or off, and the load is turned on or off accordingly.

  A circuit board 44 is provided inside the operation handle 4, and a radio signal transmission / reception circuit 45, antennas 46 and 47, and a control circuit 50 are mounted on the circuit board 44. Further, a plurality of (for example, three) first contacts 37 are provided on the mounting surface of the open / close function module 3, and a plurality of (general) contacts the first contact 37 on the back surface 41 of the operation handle 4. The same number of second contacts (spring pieces) 48 are provided. Thus, the electronic switch control circuit 36, the radio signal transmission / reception circuit 45, and the control circuit 50 are connected via the first contact 37 and the second contact 47.

  In the embodiment shown in FIG. 1, the driving power of the radio signal transmission / reception circuit 45 is supplied from the electronic switch (opening / closing function module 3 side) via the first contact 37 and the second contact 48. With this configuration, since the operation handle 4 is driven by the electric power supplied from the electronic switch module, maintenance such as battery replacement of the operation handle 4 becomes unnecessary.

  The antennas 46 and 47 are arranged so that substantially the same parts are orthogonal to each other, and only one of them is selected and used. As is well known, a radio wave transmitted from a remote control device (not shown) or the like includes a horizontal polarization component and a vertical polarization component, and whichever of the reception states is better depending on the surrounding radio wave environment. The antenna 46 or 47 can be selected. The selection of the antenna 46 or 47 may be switching of a switch by the user or automatic switching by the radio signal transmission / reception circuit 45.

  For example, when a lighting device such as an incandescent lamp or an LED is connected as a load, it is effective to give the load control switch a dimming function. In that case, a dimming circuit is further provided in the control circuit 36 of the electronic switch, and the dimming signal transmitted from the remote control device is received by the radio signal transmission / reception circuit 45. The dimming circuit is an illumination that is a load according to the dimming signal. What is necessary is just to comprise so that light control of an apparatus may be carried out.

  The remote control device 7 is used to remotely control the opening / closing of the load control switch 1 and the dimming intensity by performing wireless communication with the wireless signal transmission / reception circuit 45 of the operation handle 4. The remote control device 7 may be in a form that is reduced in weight so that it can be carried or fixed in a wall that cannot be carried.

  The remote control device 7 includes an operation button unit 71, a control unit (control signal output unit) 72, a transmission / reception unit 73, and a display unit (load control state notification unit) 74. The operation button unit 71 includes a plurality of button units that receive an input operation of the load control switch 1 requested by the user, and includes, for example, an on / off button and a brightness adjustment button of the load control switch 1. The control unit 72 includes a CPU, generates a control signal to be transmitted to the load control switch 1 corresponding to the operation button unit 71, and outputs the control signal to the transmission / reception unit 73. In addition, the control unit 72 performs display control of the display unit 74 according to the transmitted signal or the signal received from the load control switch 1. The transmission / reception unit 73 receives a command from the control unit 72 and transmits / receives a control signal to / from the load control switch 1. The display unit 74 is a liquid crystal display unit for notifying the user of a communication state with the load control switch 1, an LED (light emitting diode), a buzzer for generating a warning sound, or the like. For example, if a response signal is not returned from the load control switch 1 after the control signal is transmitted from the remote control device 7 to the load control switch 1, a warning message such as “cannot communicate with illumination” is displayed on the display unit 74 of the remote control device 7. The

  Next, the operation of the load control switch system A according to this embodiment will be described. As shown in FIG. 2, first, when an instruction input such as lighting on / off, for example, is made via the operation button unit 71 of the remote control device 7 (S21), the control unit 72 determines the type of the operation button unit 71. Is generated and output to the transmitter / receiver 73 (S22). And the transmission / reception part 73 transmits a control signal to the radio signal transmission / reception circuit 45 of the operation handle 4 (S23).

  Next, the control circuit 50 of the operation handle 4 acquires the control signal via the wireless signal transmission / reception circuit 45 that has received the control signal (S24), and sends a command signal corresponding to the acquired control signal to the opening / closing function module 3. A control signal is sent to the control circuit 36 (S25), and a response signal reply command indicating reception confirmation of the control signal is issued (S26). Then, the radio signal transmission / reception circuit 45 transmits a response signal to the remote control device 7 (S27), and the transmission / reception unit 73 of the remote control device 7 receives the response signal (S28). Next, the control unit 72 that has received the response signal displays on the display unit 74 that the instruction input performed using the operation button unit 71 has been completed (S29).

  As shown in FIG. 3, the control unit 72 of the remote controller 7 does not receive a response signal from the load control switch 1 within a predetermined time after transmitting a control signal to the load control switch 1 (S23) (S31). The control signal is retransmitted (S32). Thereby, the communication reliability between the remote control device 7 and the load control switch 1 can be further improved.

  In addition, when the control signal 72 cannot be received even after the retransmission of the control signal (S32) (S33, S34), the control unit 72 of the remote control device 7 displays on the display unit 74 that communication is not possible (S35). This is because, for example, even when the user performs an operation input for turning off all of the plurality of lights using the operation button unit 71 of the remote control device 7, response signals from all the load control switches 1 may not be received. In this case, the display unit 74 displays that the lights corresponding to some of the load control switches 1 cannot be turned off, and the user can surely know that the lights are not turned off completely.

  As shown in FIG. 4, the remote control device 7 uses the other load control switch 1 or remote control device 7 existing in the load control switch system A as a repeater for the retransmission of the control signal shown in S32 described above. Thus, the control signal can be retransmitted to the desired load control switch 1. This is because if the first control signal transmission is impossible, there is a high possibility that the transmission of the control signal will be impossible again even if the control signal is retransmitted using the same remote control device 7. The communication reliability between the remote control device 7 and the load control switch 1 is enhanced by requesting another remote control device 7 or the load control switch 1 in the control switch system A to perform relay processing. In this case, the header part of the control signal includes a command indicating a relay request, address information of the load control switch 1 as a transfer destination, and the like. In addition to FIG. 4, there is a method in which the remote control device 7 broadcasts the relay of the control signal to the remote control device 7 and the load control switch 1 in the load control switch system A.

  Further, in order to ensure that the user can confirm the current on / off state of the lighting, as shown in FIG. 5, the control circuit 36 of the open / close function module 3 periodically sends a load control state signal (for example, And is transmitted to the control circuit 50 of the operation handle 4 (S51). Then, a load control state signal is transmitted from the control circuit 50 of the operation handle 4 to the remote control device 7 via the wireless signal transmission / reception circuit 45 (S52, 53), and the control unit 72 of the remote control device 7 receives the received load control state signal. Based on the above, the on / off state of the illumination is displayed on the display unit 74 (S54, 55). Therefore, even when the user has a plurality of remote control devices 7 or connects a plurality of load control switches 1 to one illumination using a three-way switch or a four-way switch, The lighting on / off state at can be confirmed.

(First modification)
A first modification of the present embodiment will be described with reference to FIG. In the first modification shown in FIG. 6, there are at least two first contacts 37 and two second contacts 48, and the primary battery 49 built in the operation handle 4 is connected to the radio signal transmitting / receiving circuit 45 and the control circuit 50. It is configured to supply driving power. For example, in the case of two-wire wiring, the load control switch 1 is connected in series with the commercial power source and the load. The driving power of the control circuit 36 of the open / close function module 3 of the load control switch 1 is supplied from a commercial power source. That is, even when the load is off, standby power for causing the CPU of the control circuit 36 to stand by is consumed, resulting in a minute current flowing through the load. Similarly, the radio signal transmission / reception circuit 45 and the control circuit 50 are also on standby so that they can always receive a control signal from the remote control device 7 even when the load is off.

  Here, as in the configuration example shown in FIG. 1, when the driving power of the radio signal transmission / reception circuit 45 and the control circuit 50 is supplied from the switching function module 3, the current flowing through the load increases when the load is off. When the load is an incandescent lamp, etc., it will not be a problem. However, in the case of a load that has low power consumption and a current value that decreases as the voltage of the commercial power supply increases, such as an LED, a control circuit There is a possibility that the LED is turned on by the current resulting from the standby power of 36. Accordingly, by supplying driving power from the built-in primary battery 49 to the wireless signal transmitting / receiving circuit 45 and the control circuit 50 as in the modification shown in FIG. 6, it is possible to prevent erroneous lighting of the LEDs. In addition, the power receiving terminal of the operation handle 4 is not required, and the open / close function module 3 does not require power supply to the operation handle 4, thereby simplifying the circuit configuration. If a lithium ion battery, for example, is used as the built-in primary battery 49, a battery life of 3 to 5 years is ensured (depending on the frequency of use). Further, when the remaining battery life is low, an alarm that prompts battery replacement may be output.

  Further, the remote control device 7 shown in FIG. 6 includes a built-in battery 75, and by driving each processing unit using the built-in battery 75 as a power source, the weight of the remote control device 7 can be reduced and user convenience can be improved. Note that the remote control device 7 of the type fixed to the wall may have a power receiving circuit for receiving power from a commercial power source.

(Second modification)
A second modification of the present embodiment will be described with reference to FIG. In the second modified example shown in FIG. 7, the operation handle 4 includes a power generation element 61 such as a solar battery and a secondary battery 62 for charging the power generated by the power generation element 61. The circuit 50 is configured to be supplied with driving power from the power generation element 61 or the secondary battery 62.

  As the power generation element 61, a piezoelectric element or the like can be used in addition to the solar battery. For example, the operation handle 4 is biased in a certain direction by a spring of the push-on / push-off switch 33. Therefore, if a piezoelectric element is provided on the back surface 41 of the operation handle 4 so that pressure is constantly applied to the piezoelectric element, it is possible to generate power about the driving power of the radio signal transmission / reception circuit 45 and the control circuit 50. It is. Further, since the operation handle 4 includes the power generation element 61, the operation handle 4 does not need a power receiving terminal and does not require power supply from the open / close function module 3, thereby simplifying the circuit configuration. Furthermore, by using the power generation element 61, the user does not need maintenance such as battery replacement of the operation handle 4.

  The simplest configuration of the open / close function module 3 includes a mechanical switch having a movable contact and a fixed contact. For example, if the operating handle is rotated in one direction around the spindle, the movable contact contacts the fixed contact, and if the operating handle is rotated in the reverse direction, the movable contact moves away from the fixed contact, or A mechanical push-on / push-off switch or the like is conceivable (not shown because of public knowledge). These mechanical switches are simple in function only to turn the load on or off, but at a low cost.

  According to the load control switch system A configured as described above, as long as the terminal module 2 is installed in advance, the user can install the opening / closing function module 3 suitable for his / her purpose in the home center and the operation handle 4 adapted thereto. By purchasing, the load control switch 1 can be replaced by itself. For example, assuming that the cheapest mechanical switch is mounted as the opening / closing function module 3 when moving in, and the user wants to control the lighting device on and off from a remote control device, the opening / closing function module 3 having an electronic switch, It is only necessary to purchase the operation handle 4 and the remote control device 7 having a signal receiving function and replace them by themselves. As a result, for example, it is not necessary to request a construction contractor to perform electrical work, and the function of the load control switch can be improved or changed at a low cost and at any time.

  Further, in the load control switch system A according to the present invention, when the load control switch 1 is operated from the remote control device 7, a response signal returned from the load control switch 1 is received and the communication state is displayed on the display unit 74. In addition to improving the communication reliability between the remote control device 7 and the load control switch 1, the user can check on / off of lighting and dimming control via the display unit 74.

  The load control switch system A of the present invention includes, for example, two types of terminal modules 2 for two wires and three wires, a plurality of types of opening / closing function modules 3 exemplified in the above embodiment, and a plurality of types of operations adapted thereto. A handle 4 or the like can be used. In the above embodiment, the case where radio waves are used as the wireless signal receiving function has been described. However, the present invention is not limited to this, and a wireless signal receiving function using infrared rays or the like may be used.

A Load control switch system 1 Load control switch 2 Terminal module 3 Open / close function module 31 Socket 32 Mounting surface 33 Push-on / push-off switch 34 Support shaft 35 Circuit board 36 Control circuit 4 Operation handle 41 Back surface 42, 42A, 42B Bearing 43 Projection 44 Circuit board 45 Radio signal transmission / reception circuit 46, 47 Antenna 49 Primary battery 50 Control circuit 5 Electric wire 51 Core wire 61 Power generation element 62 Secondary battery 7 Remote control device 71 Operation button part 72 Control part 73 Transmission / reception part 74 Display part 75 Built-in battery

Claims (11)

A terminal module that is directly attached to a mounting frame installed on the wall of the building and to which an electric wire is connected;
An open / close function module that is detachably attached to the terminal module and has an electronic switch function for controlling on and off of a load in accordance with a control signal input from the outside;
A load control switch comprising: a wireless signal transmission / reception circuit that is detachably attached to the open / close function module and transmits / receives a signal to / from a remote control device; and an operation handle having a control circuit.   2. The load control switch according to claim 1, wherein when the wireless signal transmitting / receiving circuit receives a control signal from the remote control device, the control circuit returns a response signal indicating reception confirmation to the remote control device. A load control switch system for remotely controlling a load control switch using a remote control device,
The load control switch is
A terminal module that is directly attached to a mounting frame installed on the wall of the building and to which an electric wire is connected;
An open / close function module that is detachably attached to the terminal module and has an electronic switch function for controlling on and off of a load in accordance with a control signal input from the outside;
A radio signal transmission / reception circuit that is detachably attached to the open / close function module and transmits / receives a signal to / from the remote control device, and an operation handle having a control circuit;
The remote control device is
A control signal output unit for generating a control signal for controlling the open / close function module;
In order to remotely operate the open / close function module, a transmission / reception unit that transmits / receives a radio signal to / from the radio signal transmission / reception circuit;
A load control switch comprising: a load control state notifying unit for notifying a user of a load control state by the open / close function module according to a signal transmission / reception result between the transmission / reception unit and the wireless signal transmission / reception circuit. system.   The control signal of the operation handle returns a response signal indicating reception confirmation of the control signal to the remote control device when the wireless signal transmission / reception circuit receives the control signal from the remote control device. The load control switch system described.   5. The load control state notification unit updates the content of the load control state visually or audibly when the transmission / reception unit receives a response signal or cannot receive a response signal. The load control switch system described.   The control signal output unit of the remote control device retransmits the control signal to the load control switch when a response signal cannot be received within a predetermined time after transmitting the control signal to the load control switch. The load control switch system according to claim 4.   When the control signal output unit of the remote control device does not receive a response signal even if the control signal is retransmitted to the load control switch, the control signal output unit updates the content of the notification of the load control state notification unit. The load control switch system according to claim 6. The load control switch system has a plurality of remote control devices or a plurality of load control switches,
The control signal output unit of the remote control device or the control circuit of the load control switch, when receiving the control signal, relays the control signal to another load control switch and transmits it. The load control switch system described. The radio signal transmitting / receiving circuit transmits a load control state signal of the open / close function module to the remote control device every predetermined period,
When the transmission / reception unit receives the load control state signal, the control signal output unit of the remote control device updates the content of the notification of the load control state notification unit based on the load control state signal. The load control switch system according to claim 3.   4. The load control switch system according to claim 3, wherein the wireless signal transmitting / receiving circuit and the control circuit are supplied with driving power from a primary battery built in the operation handle.   The operation handle includes a power generation element and a secondary battery for charging electric power generated by the power generation element, and the radio signal transmission / reception circuit and the control circuit included in the operation handle include the power generation element or the secondary battery. 4. The load control switch system according to claim 3, wherein driving power is supplied from the battery.

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