JP5708304B2 - Remote control system - Google Patents

Description

  The present invention relates to a remote control system, and more specifically, an audio signal from a music playback device input to one remote controller can be output from a speaker of another remote controller using a voice call function between remote controllers. Related to remote control system.

  Conventionally, hot water supply devices equipped with so-called bath functions such as bathing in a bathtub or retreating a bath have remote control devices other than a bathroom remote control installed in the bathroom (so-called bath remote control) and a bathroom such as a kitchen. And a remote controller outside the bathroom (so-called kitchen remote controller) installed at the location.

  In such a remote control system having a bath remote controller and a kitchen remote controller, each remote controller is connected to a controller (control unit) of a hot water supply device by a communication cable, and a control signal generated by each remote controller according to the operation of the remote controller is transmitted. The hot water supply apparatus can be remotely operated by being given to the controller of the hot water supply apparatus via the communication cable.

  By the way, in such a remote control system, the bath remote controller and the kitchen remote controller can communicate with each other via the hot water supply device, and the contents operated by the bath remote controller are reflected in the kitchen remote controller (for example, with the bath remote controller). The set hot water set temperature is also set and displayed as the hot water set temperature on the kitchen remote control. On the other hand, the contents operated by the kitchen remote control are also reflected in the bath remote control (for example, the hot water set temperature set by the kitchen remote control is It is set and displayed as the hot water supply set temperature on the bath remote control).

  In recent years, using the communication function of the bath remote control and kitchen remote control, each remote control has a microphone (microphone) and a speaker so that a voice call can be made between the bath remote control and the kitchen remote control ( Remote control system with voice call function). Recently, using such a voice call function, a connection terminal for connecting a music playback device to the kitchen remote control is provided, and an audio signal from the music playback device input to the connection terminal is transmitted to the bath remote control. Thus, there has been proposed a device (a remote control system with a BGM function) that can listen to music reproduced by a music reproducing device through a speaker of a bath remote controller (see, for example, Patent Document 1).

  In addition, kitchen remote control and bath remote control tend to increase the number of items that can be operated due to the recent multi-functionalization. On the other hand, due to demands for miniaturization and design, a front panel can be opened and closed (hidden cover). There has been proposed one in which a push button type operation switch is provided under the hidden lid (see, for example, Patent Document 2).

JP 2002-277050 A FIG. 2 of JP-A-2005-302357

  However, such a conventional configuration has the following problems, and improvements have been desired.

  That is, in the above-described remote control system having the BGM function, for example, when the above-described hidden cover is provided on the kitchen remote control, the music playback device is connected to the kitchen remote control and the music playback is performed. If you open the hidden lid and push down the operation switch below it, the operation of the kitchen remote control will be bent slightly, but this will cause poor connection between the kitchen remote control and the music playback device. In some cases, noise is mixed with the music output from the speaker of the bath remote control, and the user feels uncomfortable.

  Specifically, normally, in this type of remote control, a phone jack is preferably employed as a connection terminal for connecting the music playback device, and the connection between the music playback device and the kitchen remote control is connected to the phone jack from the music playback device. Since the phone plug provided on the electrical line for outputting the audio signal is inserted, if the housing of the remote control bends, the connection between this plug and the jack will be shifted or loosened. There was a case where noise was added to the input audio signal, and the music output from the speaker of the bath remote control was mixed with harsh noise.

  The present invention has been made in view of such problems, and an object of the present invention is to provide audio output from a music playback device connected to one remote controller using a voice call function between remote controllers. It is an object of the present invention to provide a remote control system that can prevent unpleasant noise associated with remote control operation from being mixed with music output from a speaker in a remote control system that can output signals from speakers of other remote controls.

  In order to achieve the above object, a remote control system according to the present invention is a remote control system in which one remote controller and another remote controller that are connected for communication are each provided with a microphone and a speaker, and a voice call can be performed between these remote controllers. The remote controller of 1 is provided with a music input terminal for inputting an audio signal output from the music playback device, and the audio signal input to the music input terminal uses the voice call function to In the remote control system that can output from the speaker of the remote controller, the remote controller of 1 includes cover opening / closing detection means for detecting opening / closing of the hidden cover of the operation switch provided in the remote controller. When the lid opening / closing detection means detects that the hidden lid has been opened, the audio signal from the speaker is detected. Characterized by comprising a control arrangement for stopping the output of.

  Here, the “control for stopping the output of the audio signal from the speaker” refers to the control of the other remote controller by controlling the remote controller 1 or the other remote controller without stopping the music playback on the music playback device. It means control to stop the music output from the speaker.

  That is, in the remote control system according to the present invention, when the hidden cover for concealing the operation switch is opened in one remote control to which the music playback device is connected, the operation switch that causes the casing of the one remote control to bend thereafter is pressed. Since it is expected that the lowering operation will be performed, the music (audio signal output) from other remote control speakers is stopped by the control in the remote control system when it is detected that the hidden cover is opened. I try to let them. Therefore, in the remote control system of the present invention, even if the operation switch under the hidden cover of one remote control is pressed down, music output from the speaker is already stopped at that time, so that the user is noisy. You don't have to hear mixed sounds.

  The remote control system according to claim 2 of the present invention is the remote control system according to claim 1, wherein the hidden lid is closed by the lid open / close detection means while the output of the audio signal from the speaker is stopped. When this is detected, a control configuration for canceling output stop of the audio signal from the speaker is provided.

  In the remote control system according to claim 2, when the hidden cover of the first remote controller is opened, the music output by the speaker of the other remote controller is stopped and the hidden cover is closed. After that, since it is unlikely that the operation switch hidden by the hidden lid will be operated after that, when it is detected that the hidden lid is closed, the music output from the speaker of another remote controller is resumed. I am doing so. For this reason, when the operation of the operation switch hidden by the hidden cover is completed and the hidden cover is closed, music output from another remote controller is automatically resumed.

  The remote control system according to claim 3 of the present invention is the remote control system according to claim 1 or 2, wherein the lid open / close detection means opens the hidden lid while the output of the audio signal from the speaker is stopped. A control structure for canceling the output stop of the audio signal from the speaker when it is not detected that the hidden cover is closed even if a predetermined time has passed after detecting that And

  That is, in the remote control system according to claim 3, the hidden cover is forgotten to be closed in a state in which music output by the speaker of the other remote control is stopped as the hidden cover of the one remote control is opened. If it is left unchecked for a predetermined time, for example, it is assumed that the hidden lid has been forgotten to be closed, and the music output from the speaker of another remote controller is resumed. Therefore, even if the operation of the operation switch hidden by the hidden lid is completed and the hidden lid is left unclosed, music output from another remote controller is automatically resumed after a predetermined time has elapsed. .

  A remote control system according to a fourth aspect of the present invention is the remote control system according to any one of the first to third aspects, wherein the signal for cutting off the audio signal input from the music playback device to the first remote controller is provided. A shut-off means is provided, and output of the audio signal from the speaker is stopped by operating the signal shut-off means.

  That is, in the remote control system according to claim 4, as a means for performing the above-described “control to stop the output of the audio signal from the speaker”, the audio signal input from the music playback device to the one remote controller is blocked. Signal blocking means is provided. Then, in order to stop the music emitted from the speaker of another remote controller, the transmission of music is stopped on one remote controller side.

  According to the present invention, in one remote controller to which a music playback device is connected, when it is detected that the hidden cover that hides the operation switch is opened, the audio from the speaker of another remote controller is controlled by the control in the remote control system. Since the output of the signal is stopped, the music output from the speaker is already stopped at that time even if the hidden cover of one remote control is opened and the operation switch under it is operated. The user does not have to listen to unpleasant sounds mixed with noise, and can comfortably listen to the music reproduced by the music reproducing apparatus.

It is explanatory drawing which shows an example of schematic structure of the remote control system which concerns on this invention. It is a schematic block diagram of the remote control system which shows the outline | summary of the voice call function in the same remote control system, and a BGM function. It is a circuit diagram which shows the example of a connection of the music input terminal and intercom communication circuit in the kitchen remote control of the same remote control system. It is a flowchart which shows an example of the process sequence of the BGM function in the kitchen remote control.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
A remote control system according to the present invention is a remote control system used for remote operation of a hot water supply device having a bath function, and as shown in FIG. 1, a hot water supply device 1 and a kitchen installed in a place other than the bathroom such as a kitchen. A remote controller (1 remote controller) 2 and a bath remote controller (other remote controller) 3 installed in the bathroom are mainly configured.

  Here, the kitchen remote controller 2 and the bath remote controller 3 are communicatively connected via the hot water supply device 1. Specifically, the two-core communication cable 4 connected to each of the remote controllers 2 and 3 is connected to each other via a terminal block (not shown) of the hot water supply device 1, so that the kitchen remote controller 2 and the bath remote controller are connected. 3 is connected for communication.

  The remote control system shown in FIG. 1 has a function (voice call function) for making a voice call between the kitchen remote control 2 and the bath remote control 3, and a kitchen remote control using this voice call function, as will be described later. 2 and a BGM function that allows an audio signal output from a music player (music playback device) 5 connected to 2 to be output through a speaker of the bath remote controller 3.

  Therefore, in the following, the configuration of the remote control system of the present invention will be described with reference to FIG. In the description, components common to the kitchen remote controller 2 and the bath remote controller 3 are denoted by the same reference numerals and redundant description is omitted (however, even in the same configuration, the two are distinguished for convenience of description). When necessary, the component parts of the kitchen remote controller 2 are distinguished from each other by adding “a” at the end of the reference numeral and “b” at the end of the reference numeral of the constituent parts of the bath remote control 3.

  Each of the kitchen remote control 2 and the bath remote control 3 is a remote control device provided for remote control of the hot water supply device, and the microcomputer 6 as a control center is connected between the hot water supply device and other remote controls. The hot water supply 2-core communication circuit 7 for transmitting and receiving the control signal and the interphone communication circuit 8 for realizing the voice call function and the BGM function described above are provided as main parts.

  The microcomputer 6 is a control means for storing data necessary for realizing various functions such as a remote operation function, a voice call function, a BGM function, etc. of the hot water supply device 1 in each remote controller 2, 3. As is well known, a CPU, ROM, RAM, and the like are configured as main parts.

  The hot water supply 2-core communication circuit 7 is a communication means provided for the microcomputer 6 to transmit and receive control signals to and from the hot water supply device 1 and the other remote controller 2 or 3 via the communication cable 4. That is, by providing the hot water supply 2-core communication circuit 7, the microcomputer 6a of the kitchen remote controller 2 can exchange control signals with a controller (control unit) of the hot water supply apparatus 1 and a microcomputer 6b of the bath remote controller 3 (not shown). Similarly, the microcomputer 6b of the bath remote controller 3 can also exchange control signals with the controller of the hot water supply device 1 (not shown) and the microcomputer 6a of the kitchen remote controller 2.

  The intercom communication circuit 8 is a communication means provided for performing a voice call between the kitchen remote control 2 and the bath remote control 3, and the interphone communication circuit 8 has a microphone for inputting voice during the voice call. 9, a microphone amplifier 10 that amplifies an audio signal converted into an electric signal by the microphone 9, an FM wave oscillation circuit 11 that modulates the frequency of the audio signal amplified by the microphone amplifier 10 and supplies the frequency to the communication cable 4, A filter 12 that removes noise from the modulation signal received via the cable 4, an FM detection circuit 13 that demodulates the received modulation signal, a speaker amplifier 14 that amplifies the audio signal demodulated by the FM detection circuit 13, and a speaker The speaker 15 that outputs the sound signal amplified by the amplifier 14 as sound that can be heard to the outside, and the transmission / reception (sending and receiving) of the sound signal are switched off. And a call switch circuit 16 to obtain includes, as principal components.

  That is, the kitchen remote control 2 and the bath remote control 3 are provided with such an interphone communication circuit 8 so that, for example, when a call is made from the kitchen remote control 2 to the bath remote control 3, an operation of a call switch of the kitchen remote control 2 (not shown) is performed. For example, the call switching circuit 16a is switched to a transmission operation, whereby an audio signal input through the microphone 9a and the microphone amplifier 10a is frequency-modulated by the FM wave oscillation circuit 11a and transmitted to the bath remote controller 3 through the communication cable 4. The When the bath remote controller 3 receives the modulation signal via the communication cable 4, the noise is removed by the filter 12b, demodulated by the FM detection circuit 13b, and supplied to the call switching circuit 16b as a voice signal. Is done. At this time, the call switching circuit 16b is in a receiving operation, and the demodulated audio signal is amplified by the speaker amplifier 14b so as to have a predetermined volume, supplied to the speaker 15b, and externally as sound that can be heard from the speaker 15b. Is output.

  Note that the sound volume output from the speaker 15b at this time is determined by the volume setting in the speaker amplifier 14b, but the speaker amplifiers 14 of the remote controllers 2 and 3 shown in the present embodiment suppress an increase in component costs. In addition, the volume setting can be set in four levels including mute (specifically, four levels of mute, low volume, medium volume, and high volume), and the user can set any of these four levels. It has become so.

  On the other hand, when a telephone call is made from the bath remote controller 3 to the kitchen remote controller 2, a communication path opposite to the above-described path, that is, an audio signal input from the microphone 9b is frequency-modulated by the FM wave oscillation circuit 11b. The modulated signal received by the kitchen remote controller 2 is demodulated by the FM detection circuit 13a and output to the outside as sound that can be heard from the speaker 15a via the speaker amplifier 14a.

  In the remote control system shown in the present embodiment, in order to realize the above-described BGM function by using such a voice call function, an audio signal output from the music player 5 is input to the kitchen remote control 2. A music input terminal 17 is provided. The music input terminal 17 is provided only in the kitchen remote controller 2 due to the nature of the BGM function, and is not provided in the bath remote controller 3.

  Here, as the music player 5 used for the BGM function, for example, various music playback devices such as a digital audio player and a CD player are used. The music input terminal 17 is supplied with an audio signal (for example, headphone output) that can be adjusted in volume in these music playback devices. As the music input terminal 17, a terminal suitable for inputting such an audio signal, for example, a phone jack is employed.

  As shown in FIG. 2, the audio signal input to the music input terminal 17 is input to the call switching circuit 16a of the intercom communication circuit 8a. When the audio signal output from the music player 5 is transmitted to the bath remote controller 3, the call switching circuit 16a performs the same processing as the voice transmission during the voice call described above, and transmits the audio signal to the bath remote controller 3. It has become. That is, the audio signal input to the call switching circuit 16a is frequency-modulated by the FM wave oscillation circuit 11a and transmitted to the bath remote control 3, demodulated by the FM detection circuit 13b of the bath remote control 3, and set by the speaker amplifier 14b. The sound is amplified to the volume and output from the speaker 15b.

FIG. 3 shows a connection example of the music input terminal 17 and the intercom communication circuit 8a.
As shown in FIG. 3, the music input terminal 17 includes three pins 21 to 23 as contacts with a phone plug (not shown). Among these, the pin 21 is connected to the intercom communication circuit 8a of the kitchen remote controller 2 via the FET 24 whose control terminal (gate terminal) is connected to the microcomputer 6a. The pin 22 is connected to the microcomputer 6a of the kitchen remote controller 2. The pin 23 is grounded. When a phone plug is inserted into the music input terminal 17, the pin 23 is electrically connected to the pin 22 and grounded. In addition to the intercom communication circuit 8a, the pin 21 is also connected to the speaker 15 (speaker amplifier 14a) of the kitchen remote controller 2 via the FET 25 whose control terminal (gate terminal) is connected to the microcomputer 6a. . That is, when the microcomputer 6a of the kitchen remote controller 2 controls the FET 24 to be turned on, an audio signal input to the music input terminal 17 is input to the interphone communication circuit 8a, and when the FET 25 is controlled to be turned on. The audio signal input to the music input terminal 17 is input to the speaker 15a.

  In this embodiment, the front panel of the kitchen remote controller 2 to which the music player 5 is connected is provided with a hidden lid 2a that can be freely opened and closed (see FIG. 1), and is shown below the hidden lid 2a. A push button type operation switch (hidden switch) is provided. That is, operation switches that are not normally operated are hidden by the hidden lid 2a.

  In relation to the hidden lid 2a, the kitchen remote controller 2 is provided with lid opening / closing detection means 18 for detecting opening / closing of the hidden lid 2a (see FIG. 2). The lid opening / closing detection means 18 is configured to detect whether the hidden lid 2a is in an open state or a closed state by using a magnetic sensor (not shown). It is input to the microcomputer 6a of the kitchen remote controller 2 (see FIG. 3).

  Thus, in the remote control system configured as described above, in this embodiment, when the hidden cover 2 of the kitchen remote control 2 is opened during music reproduction by the music player 5 with respect to the BGM function, the speaker 15b of the bath remote control 3 The music output is stopped. The operation will be described below with reference to FIG.

FIG. 4 shows a processing procedure of the BGM function in the microcomputer 6a of the kitchen remote controller 2.
As shown in FIG. 4, in order to execute the BGM function, the microcomputer 6a of the kitchen remote controller 2 first inputs an audio signal output from the music player 5 to the music input terminal 17 provided in the kitchen remote controller 2. It is determined whether or not a phone plug (not shown) is inserted (see step S1 in FIG. 4).

  As described above, when a phone plug is connected to the music input terminal 17 as described above, the pin 22 of the music input terminal 17 is electrically connected to the pin 23 and becomes the ground level. to decide.

  When the music player 5 is connected to the music input terminal 17 (when the microcomputer 6a detects the insertion of the plug), the microcomputer 6a sends the audio signal input from the music player 5 to the music input terminal 17 to the bath remote controller 3. The BGM mode for transmission is started (see step S2 in FIG. 4).

  That is, the microcomputer 6a turns on the FET 24 so that the audio signal input to the music input terminal 17 is input to the intercom communication circuit 8a. As a result, the intercom communication circuit 8a operates, and the audio signal is transmitted to the bath remote controller 3 in the above-described procedure, and the music reproduced by the music player 5 is output from the speaker 15b of the bath remote controller 3 so as to be audible. Become.

  In this BGM mode, music input from the music player 5 can also be output from the speaker 15a of the kitchen remote controller 2, and in the BGM mode setting, the music player is connected to the speaker 15a of the kitchen remote controller 2 in the BGM mode. If the microcomputer 6a is set to listen to the music reproduced at 5, the microcomputer 6a turns on the FET 25 so that the music is output from the speaker 15a of the kitchen remote controller 2.

  When the microcomputer 6a shifts to the BGM mode in this way, the microcomputer 6a next determines whether or not a signal indicating the open state of the hidden cover 2a is detected from the cover opening / closing detection means 18 (FIG. When the hidden cover 2a is opened (see the open state of the hidden cover 2a), the BGM mode is stopped (see step S4 in FIG. 4).

  Here, when the hidden lid 2a of the kitchen remote controller 2 is opened in the BGM mode, the BGM mode is stopped because the operation hidden under the hidden lid 2a is subsequently performed when the hidden lid 2a is opened. While the switch is likely to be pressed down, when the operation switch is pressed down, the housing of the kitchen remote control 2 is bent and the connection between the plug of the music input terminal 17 and the jack is shifted or loosened. As a result, noise may be added to the audio signal and unpleasant noise may be mixed with the music output from the speaker 15b of the bath remote control 3, so that a sound with such noise is not output from the speaker 15b. It is to make it.

  The stop of the BGM mode is performed when the microcomputer 6a of the kitchen remote controller 2 turns off the FET 24 and / or the FET 25 according to the setting of the BGM mode. That is, when the setting of the BGM mode is set to listen to music with the bathroom remote controller 3, the microcomputer 6a of the kitchen remote controller 2 controls the FET 24 to be turned off and is supplied from the music player 5 to the music input terminal 17. The audio signal is blocked so that the audio signal is not input to the intercom communication circuit 8a. On the other hand, when the setting of the BGM mode is set to listen to music by the kitchen remote controller 2, the microcomputer 6a of the kitchen remote controller 2 controls the FET 25 to be off and supplies the music input terminal 17 from the music player 5. The audio signal is blocked so that the received audio signal is not input to the microphone amplifier 9a of the kitchen remote controller 2. That is, in the present embodiment, these FETs 24 and 25 function as means for stopping the output of the audio signal from the speaker 15, that is, as signal blocking means for blocking the audio signal.

  As a method for stopping the output of the audio signal from the speaker 15, in addition to the method of blocking the signal path of the audio signal as described above, for example, the speaker amplifier 14 is stopped or the speaker amplifier 14 is Other methods can be employed as appropriate, such as silencing the volume setting. At that time, if the processing on the bath remote control 3 side is necessary, the microcomputer 6a of the kitchen remote control 2 and the microcomputer 6b of the bath remote control 3 exchange control signals to execute the necessary processing on the bath remote control 3 side. Configured to order.

  When the BGM mode is stopped in this way, during the stop period of the BGM mode, the microcomputer 6a of the kitchen remote controller 2 determines whether or not the closed state of the hidden lid 2a is detected from the lid open / close detection means 18. (See step S5 in FIG. 4).

  When detecting that the hidden lid 2a is closed (when the hidden lid 2a is closed) (when step S5 in FIG. 4 is “No”), the microcomputer 6a cancels the stop of the BGM mode and resumes the BGM mode. (See step S2 in FIG. 4). That is, when the hidden lid 2a is closed, the operation switch hidden under the hidden lid 2a is not operated, and the BGM mode is resumed.

  Specifically, when the stopped BGM mode is set to listen to music by the bathroom remote controller 3, the microcomputer 6a of the kitchen remote controller 2 controls the FET 24 to be turned on so that the music player 5 can input a music input terminal. The audio signal supplied to 17 is input to the intercom communication circuit 8a. On the other hand, if the stopped BGM mode is set to listen to music by the kitchen remote controller 2, the microcomputer 6 a of the kitchen remote controller 2 controls the FET 25 to be turned on so that the music player 5 can input the music input terminal 17. The audio signal supplied to is input to the microphone amplifier 9a of the kitchen remote controller 2.

  Note that the music played back by the music player 5 again is output from the speaker 15 by the restart of the BGM mode, but the music playback itself by the music player 5 continues even during the BGM mode stop period. The music that flows when the BGM mode is resumed is not continuous with the music before the BGM mode is stopped.

  On the other hand, when the lid opening / closing detection means 18 does not detect the closed state of the hidden lid 2a (when step S5 in FIG. 4 is “Yes”), the microcomputer 6a indicates that this state has passed a predetermined time (for example, 1 minute). (See step S6 in FIG. 4), and if this state continues for a predetermined time (when step S6 in FIG. 4 is “Yes”), forgetting to close the hidden lid 2a Therefore, the microcomputer 6a cancels the stop of the BGM mode and restarts the BGM mode as in the case of detecting the closed state of the hidden lid 2a (see step S2 in FIG. 4).

  As described above, in the remote control system shown in the present embodiment, when the kitchen remote controller 2 to which the music player 5 is connected is in the BGM mode, it is detected that the hidden lid 2a that hides the operation switch is opened. At that time, since the audio signal output (music output) from the speaker 15b of the bath remote controller 3 is stopped, even if the operation switch under the hidden lid 2a is operated, the user feels uncomfortable noise mixed with noise. It is possible to listen to music reproduced by the music player 5 comfortably.

  Moreover, when the hidden lid 2a is closed in a state where the output of music from the speaker 15 is stopped due to the opening of the hidden lid 2a (or when the hidden lid 2a is left unchecked for a predetermined time). Since the music output from the speaker 15 is automatically resumed, the user can enjoy the music without bothering to resume the BGM mode.

  The above-described embodiments show preferred embodiments of the present invention, and the present invention is not limited to these, and various design changes can be made within the scope of the invention.

  For example, in the above-described embodiment, the case where the magnetic sensor is used as the lid opening / closing detection means 18 for detecting the opening / closing of the hidden lid 2a is shown. However, the lid opening / closing detection means 18 can detect the opening / closing of the hidden lid 2a. For example, other sensors can be used.

  In the above-described embodiment, the music player 5 is configured to continue playing the music even during the BGM mode stop period. For example, when the BGM mode is stopped, the music player 5 plays music from the kitchen remote controller 2. It may be configured to transmit a pause signal for instructing pause of reproduction. In other words, in this case, the microcomputer 6a of the kitchen remote controller 2 transmits the pause signal to the music player 5 when the lid open / close detection means 18 detects the open state of the hidden lid 2a during the BGM mode. 5 is stopped while the closed state of the hidden lid 2a is detected or the open state continues beyond the predetermined time, the pause signal cancel signal is sent to the music player 5. Is transmitted to resume music playback on the music player 5. Thereby, the music that flows when the BGM mode is resumed becomes continuous with the music before the stop of the BGM mode, and it is possible to prevent the music being listened to from being skipped due to the stop of the BGM mode.

  In the above-described embodiment, when the lid opening / closing detection means 18 does not detect the closed state of the hidden lid 2a for more than a predetermined time during the BGM mode stop period, the microcomputer 6a stops the BGM mode. In this point, for example, during the BGM mode stop period, no operation state in which none of the operation switches hidden by the hidden lid 2a is operated for a predetermined time (for example, It is also possible that the microcomputer 6a cancels the stop of the BGM mode and restarts the BGM mode when the time exceeds 1 minute).

  In the above-described embodiment, the interphone communication circuit 8 is configured with a communication circuit that performs frequency modulation on a voice signal or a music signal, but the communication method in the voice call function or the BGM function is a frequency. The design can be changed as appropriate without being limited to modulation.

1 Water heater 2 Kitchen remote control (1 remote control)
3 Bath remote control (other remote control)
4 Communication cable 5 Music player (music player)
6 microcomputer 7 hot water supply 2-core communication circuit 8 intercom communication circuit 9 microphone 15 speaker 17 music input terminal 18 lid open / close detection means 24, 25 FET (signal cutoff means)

Claims (4)

A remote control system in which one remote controller and another remote controller connected to each other are provided with a microphone and a speaker, and a voice call can be performed between these remote controllers,
The remote controller of 1 is provided with a music input terminal for inputting an audio signal output from the music playback device, and the audio signal input to the music input terminal of the other remote controller using the voice call function. In the remote control system that can output from the speaker,
The remote controller of 1 comprises a lid open / close detecting means for detecting opening / closing of a hidden lid of an operation switch provided in the remote controller of the 1;
A remote control system comprising a control configuration for stopping output of an audio signal from the speaker when the lid opening / closing detection means detects that the hidden lid is opened. When the output of the audio signal from the speaker is stopped, when the cover opening / closing detection unit detects that the hidden cover is closed, the control configuration is provided to cancel the output stop of the audio signal from the speaker. The remote control system according to claim 1. When the output of the audio signal from the speaker is stopped, the lid opening / closing detection means does not detect that the hidden lid has been closed even after a predetermined time has elapsed after detecting that the hidden lid has been opened. The remote control system according to claim 1, further comprising a control configuration for canceling output stop of the audio signal from the speaker. The remote controller of 1 includes a signal blocking means for blocking an audio signal input from the music playback device,
The remote control system according to any one of claims 1 to 3, wherein the output of the audio signal from the speaker is stopped by operating the signal blocking means.

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