JP2011143264A - Sanitary washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary washing device which highly accurately detects room temperature and controls the temperature of a toilet seat, so as to achieve energy saving. <P>SOLUTION: A power supply to a first room temperature detector 602 driven by an internal battery 601 of a first remote unit 600 is stopped when a person detector 600a detects the exit of a user. A control part 90 determines a target temperature of a toilet seat heater 450 according to a temperature T1 detected before the power supply is stopped, and thereafter, determines the target temperature according to the temperature T2 detected by a second room temperature detector. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sanitary washing apparatus, and in particular, a toilet seat body having a heater that generates hot water by heating water supplied from the outside, and a hot water jet part that jets hot water, and a toilet seat heater that electrically heats the toilet seat And a sanitary washing device.

  Conventional hygiene cleaning devices have been proposed with various functions to adjust the temperature of the point of direct contact with the user to an appropriate temperature so as not to cause discomfort to the user. Has been. For example, Patent Document 1 below discloses a configuration for controlling the toilet seat temperature so that the user can sit on the toilet seat without feeling uncomfortable even when the room temperature is low, such as in winter.

  In the sanitary washing device described in Patent Document 1, a toilet seat temperature detecting means for detecting the temperature of the toilet seat, a room temperature detecting means for detecting the temperature in the toilet room, and a toilet seat provided in the toilet seat are provided in the toilet seat. A heater and a control unit that controls energization of the toilet seat heater are provided.

  In such a configuration, the control unit controls the energization amount of the toilet seat heater based on the temperature of the toilet seat detected by the toilet seat temperature detection unit and the room temperature detected by the room temperature detection unit. In addition, in the configuration equipped with human body detection means for detecting the user's entrance and exit, for the sake of power saving, it is set to a low temperature (standby temperature) with a small energization amount when the user is not detected. When the person is detected, control is also performed to raise the toilet seat temperature from the standby temperature to a set temperature at which the user does not feel cold when seated on the toilet seat (see, for example, Patent Document 2).

JP 2000-210230 A JP 2007-83026 A

  However, when the toilet seat body is provided with room temperature detection means, it is easy to be affected by the heat from the heater or drying device for generating hot water provided in the toilet seat body during use of the sanitary washing device, and the room temperature is highly accurate. It is difficult to detect.

  The present invention has been made to solve the above-described problems, and provides a sanitary washing device that can achieve energy saving by detecting the room temperature with high accuracy and performing temperature control of the toilet seat with high accuracy. The purpose is to provide.

  A typical aspect of the sanitary washing device according to the present invention is a toilet seat body having a toilet seat, a heater that generates warm water by heating water supplied from the outside, and a hot water ejection portion that ejects the warm water to the outside And a toilet seat heater provided in the toilet seat for electrically heating the toilet seat, and a first room temperature detector provided in the toilet room separately from the toilet seat body for detecting the ambient temperature T1. A remote device that transmits the ambient temperature T1 detected by the first room temperature detector to the toilet seat body, a second room temperature detector that is provided in the toilet seat body and detects the ambient temperature T2, and the toilet seat A heater temperature detector for detecting the temperature T3 of the heater, an exit detector for detecting that the user has exited the toilet room, and controlling the energization amount to the toilet seat heater based on the temperature T3; Detecting exit from the exit detector And a controller that determines that the remote controller is in a standby state, the remote device is driven by a built-in battery, the first room temperature detector is also supplied with power from the built-in battery, and the exit detector is exited. When the power supply from the built-in battery is stopped, the control unit is configured to stop the power supply from the built-in battery to the first room temperature detector. Is determined based on the temperature T1 detected before power supply to the first room temperature detector is stopped, and the target temperature thereafter is determined based on the temperature T2. Configured to determine.

  According to another aspect of the present invention, in addition to the representative aspect, the remote unit includes the exit detector, and the exit detector detects the presence or absence of a human body in the toilet room. If the human body detector detects the presence of a human body, the power supply from the built-in battery to the first room temperature detector is started. Configured to stop power supply.

  According to still another aspect of the present invention, in addition to the other aspects, when the human body detector detects the presence of a human body, the control unit determines the temperature of the seating surface of the toilet seat as a standby temperature Tp in a standby state. The standby amount Tp is configured to control the energization amount of the toilet seat heater so that the temperature is raised to a predetermined temperature TU, and the standby temperature Tp is determined after the presence of a human body is detected by the human body detector in the toilet seat heater. In the meantime, the temperature is set as a temperature that can be raised to at least a cooling sensation limit temperature Tc at which the user does not feel cold even when touching the toilet seat.

  According to another aspect of the present invention, in addition to the representative aspect, the remote unit is configured to transmit a battery dead signal to the control unit when the built-in battery becomes less than a predetermined voltage, and the control The unit is configured to control the energization amount to the toilet seat heater so that the temperature of the seating surface of the toilet seat becomes a predetermined temperature TU based on the temperature T3 when the battery dead signal is received.

  The present invention is configured as described above, and achieves energy saving by detecting the room temperature with high accuracy and controlling the temperature of the toilet seat with high accuracy in the configuration that detects the room temperature by being driven by a battery. There is an effect that can be.

It is an external appearance perspective view which shows the sanitary washing apparatus in Embodiment 1 of this invention. It is a block diagram which shows the control structure of the sanitary washing apparatus shown in FIG. It is a flowchart which shows the flow of the toilet seat temperature control in the sanitary washing apparatus of FIG. It is a figure which shows the relationship between the time at the time of toilet seat heater heating, and toilet seat temperature. It is a flowchart which shows the flow of control which determines whether temperature control using a 1st room temperature detector is performed. It is a flowchart which shows the flow of control for determining the possibility of room temperature control.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout the drawings, and redundant description thereof is omitted.

  1 is an external perspective view showing a sanitary washing apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram showing a control configuration of the sanitary washing apparatus shown in FIG.

  As shown in FIGS. 1 and 2, the sanitary washing device 100 has a toilet seat body 200 having a toilet seat 400. A toilet seat 400 and a toilet lid 500 are attached to the toilet seat body 200, and the toilet lid 500 can be opened and closed with respect to the toilet seat 400. The toilet seat body 200 is fixed in a state where the toilet seat 400 is positioned on a toilet bowl 700 installed in a toilet room, and the toilet seat 400 is fixed to the toilet bowl 700 together with the toilet lid 500 in a state where the toilet seat body 200 is fixed. Can be opened and closed. Further, the toilet seat main body 200 includes a heater 210 that heats water supplied from the outside to generate hot water, and a washing water supply mechanism that includes a hot water jetting unit 220 that jets hot water to the outside, and a local area after the toilet is used as hot water. And a cleaning nozzle 40 for cleaning using a cleaning device. In addition, the toilet seat body 200 may be provided with a drying device for drying the washed parts. Further, the toilet seat body 200 is provided with a control unit 90, which controls operation of each part of the sanitary washing device 100 such as operation control of the cleaning device and temperature control of the toilet seat 400. The control unit 90 may include one control unit, and the one control unit may perform centralized control, or may include a plurality of control units, and each may perform distributed control.

  As shown in FIG. 2, a toilet seat heater 450 is provided inside the toilet seat 400, and the toilet seat surface is heated by electrically heating the toilet seat 400. Further, a heater temperature detection unit 401a that detects the temperature of the toilet seat heater 450 is provided inside the toilet seat 400, and the toilet seat temperature detected by the heater temperature detection unit 401a is sent to the control unit 90. The heater temperature detection unit 401a is realized by a thermistor, for example.

  The sanitary washing device 100 is provided in the toilet room separately from the toilet seat body 200, and has a human body detector 600a that detects entry into and exit from the toilet room. The human body detector 600a is attached to an entrance of a toilet room or the like, and detects whether a user is in the toilet room by being driven by a battery. More specifically, the human body detector 600a is provided in the first remote device 600 (corresponding to the remote device according to the present invention) driven by the built-in battery 601. The human body detector 600a is, for example, a reflective infrared sensor. In this case, the human body detector 600a detects the infrared light reflected by the human body, thereby detecting that the user is present in the toilet room, and detecting that the infrared light is no longer reflected, thereby presenting the user. Detect that it has stopped. The human body detector 600a is configured to detect the presence or absence of a human body in the toilet room at preset time intervals. The human body detector 600a is not limited to this, and may be, for example, an infrared pyroelectric sensor. The human body detector 600a has a projector and a light receiver near the entrance of the toilet room, and the light projection to the light receiver is interrupted once. It is good also as a photoelectric tube type detector which detects entrance into a case and detects exit when light is interrupted again. In addition, the exit from the toilet room may be detected based on detection of separation by a seating sensor 610, which will be described later, or a predetermined number in the second remote device 300 indicating that the sanitary washing device 100 is no longer used. You may detect based on operation.

  The first remote device 600 has a transmitter 603 for sending human body detection information detected by the human body detector 600a to the toilet seat body 200 and a controller (not shown) (for example, composed of a microcomputer). The operation is controlled by the controller. While the human body detector 600a detects the human body, the first remote controller 600 transmits a human body detection signal S1 indicating the presence of the human body to the toilet seat body 200 at a preset time interval (for example, every 30 seconds). However, the human body detection signal S1 is not transmitted to the toilet seat body 200 while the human body detector 600a does not detect the presence of the human body. When the human body detector 600a detects the presence of a human body, the first remote device 600 includes temperature information including an ambient temperature T1 detected by a first room temperature detector 602 described later together with the human body detection information and the built-in battery 601. A signal including battery information corresponding to the voltage state is transmitted to the toilet seat body 200 as an entrance signal. The toilet seat body 200 is provided with a receiving unit 403 that receives a signal from the first remote device 600.

  Furthermore, the sanitary washing device 100 includes a first room temperature detector 602 provided in the first remote device 600. The first room temperature detector 602 operates using the internal battery 601 as a power source. As described above, the first remote device 600 sends the temperature T1 around the first room temperature detector 602 together with the human body detection information to the toilet seat body 200 using the transmitter 603 as temperature information.

  When the human body detector 600a is an infrared pyroelectric sensor, the detection accuracy varies depending on the room temperature. Therefore, the detection result of the human body detector 600a using the ambient temperature detected by the room temperature detector 602 or other room temperature detectors. May be controlled (for example, corrected).

  When the human body detector 600a detects the presence of the human body, the first remote device 600 starts supplying power from the built-in battery 601 to the first room temperature detector 602, and the human body detector 600a detects the presence of the human body. When it runs out, power supply from the built-in battery 601 to the first room temperature detector 602 is stopped. More specifically, when the human body detector 600a detects that the first remote device 600 has left the room, the first remote device 600 other than the human body detector 600a from the built-in battery 601 (for example, the control unit of the first room temperature detector 602 and the first remote device 600). Etc.) is stopped.

  The toilet seat body 200 is provided with a second room temperature detector 620 that detects the ambient temperature T2. The second room temperature detector 620 is provided at a predetermined location of the toilet seat body 200 (for example, a sleeve (arm) portion provided on the side of the toilet seat 400), and can detect the detected ambient temperature to the control unit 90. It is configured. Further, the second room temperature detector 620 operates using the power source of the toilet seat body 200. Other configurations of the second room temperature detector 620 have the same configuration as the first room temperature detector 602. The second room temperature detector 620 is connected to the control unit 90, and sends the ambient temperature T <b> 2 detected by the second room temperature detector 620 to the control unit 90.

  The sanitary washing device 100 according to this embodiment includes a second remote device 300 that performs various operations such as setting the toilet seat temperature and starting or stopping washing. The second remote device 300 is driven by a built-in battery (not shown). The receiving unit 403 of the toilet seat body 200 can also receive a signal from the second remote device 300.

  The control unit 90 is configured by, for example, a microcomputer and its peripheral circuits. Based on the detection result of the presence or absence of the human body detected by the human body detector 600a, the control unit 90 determines whether the human body is in a use state where the human body exists in the toilet room or a standby state where the human body does not exist in the toilet room. . Further, the control unit 90 includes the ambient temperature T1 detected by the first room temperature detector 602, the ambient temperature T2 detected by the second room temperature detector 620, and the toilet seat heater detected by the heater temperature detection unit 401a. The energization amount to the toilet seat heater 450 is controlled based on at least one of the temperatures T3 of 450. Specifically, the toilet seat main body 200 includes a heater driving unit 402 that is connected to the control unit 90 and drives the toilet seat heater 450, and the control unit 90 controls the heater driving unit 402, thereby The amount of energization to 450 is controlled.

  In the present embodiment, the toilet seat body 200 is provided with a seating sensor 610 that detects the seating of the user in the upper front portion. The seating sensor 610 is, for example, a reflective infrared sensor. In this case, the seating sensor 610 detects infrared rays reflected by the human body, thereby detecting that the user has approached the seat 400. The seating sensor 610 detects that the user has stood up from the toilet seat 400 and left when the infrared ray is no longer detected after detecting the infrared ray reflected by the human body.

  Here, the flow of toilet seat temperature control in the present embodiment will be described. FIG. 3 is a flowchart showing the flow of toilet seat temperature control in the sanitary washing apparatus of FIG.

  First, as shown in FIG. 3, the control unit 90 monitors whether or not the human body detector 600a detects the presence of a human body (that is, whether or not the human body detection signal S1 is sent from the human body detector 600a). (Step S1).

  When the human body detector 600a detects the presence of a human body (Yes in step S1), the control unit 90 determines that the human body is in a use state in the toilet room, and is transmitted from the first remote device 600. The ambient temperature T1 detected by the first room temperature detector 602 included in the detected human body detection signal S1 is stored in the storage unit (step S2). More specifically, the first room temperature detector 602 is driven by the built-in battery 601 and detects the ambient temperature T1 when the human body detector 600a detects that the user has entered the room. The human body detection signal S1 including the human body detection information detected by the human body detector 600a by the transmitter 603 of the first remote device 600 and the information on the ambient temperature T1 detected by the first room temperature detector 602 is the toilet body 200. Sent to. When the control unit 90 receives the human body detection signal S1, the control unit 90 stores information on the temperature T1 around the first room temperature detector 602 included in the human body detection signal S1 in the storage unit.

  Furthermore, when the control unit 90 determines that the seat is in use, the toilet seat heater is configured so that the temperature of the seating surface of the toilet seat 400 becomes a predetermined temperature TU (for example, the cooling sensation limit temperature Tc or a temperature set by the user). The energization amount to 450 is controlled (step S3).

  Here, toilet seat temperature control when the human body detector 600a detects the presence of a human body will be described. FIG. 4 is a diagram showing the relationship between the time when the toilet seat heater is heated and the toilet seat temperature.

  In the standby state in which the user is not seated on the toilet seat 400, the toilet seat 400 does not need to be warmed, so the energization amount of the toilet seat heater 450 may be 0, but when the room temperature is low as shown in FIG. In the example 3, the temperature Tx of the seating surface of the toilet seat 400 is substantially the same as the room temperature. This is particularly noticeable when the toilet seat 400 is made of metal. In such a state, when the human body detector 600a detects a human body, a human body detection signal S1 is transmitted to the toilet seat body 200. When the control unit 90 of the toilet seat body 200 determines that the use state is changed from the standby state based on the human body detection signal S1 sent from the human body detector 600a, the temperature Tx of the seating surface of the toilet seat 400 is set to a predetermined temperature TU. The amount of energization of the toilet seat heater 450 is controlled so as to be raised (time ta). At this time, the control unit 90 controls the energization amount of the toilet seat heater 450 using a heater control pattern based on the measured temperature value of the heater temperature detection unit 401a and the toilet seat set temperature stored in advance. The control unit 90 controls the driving time and driving heat amount of the heater driving unit 402 based on the heater control pattern and time information by a timer (not shown) built in the control unit 90. Thereby, the temperature Tx of the seating surface of the toilet seat 400 rises to the set temperature TU.

  Here, the user sits on the seating surface of the toilet seat 400 after entering the toilet room at time tb. Therefore, it is necessary to raise the temperature Tx of the seating surface of the toilet seat 400 to a predetermined set temperature TU between time tb and time tc. Here, the predetermined set temperature TU is at least a cool sensation limit temperature Tc at which the user does not feel cold even when touching the toilet seat 400 (in the metal toilet seat 400, 26 ° C. to 32 ° C. is preferable, and 29 ° C. is More preferred). However, when the room temperature is low, as indicated by a broken line in FIG. 4, it takes a time tc later than the time tb to increase from the temperature substantially the same as the room temperature to the cooling sensation limit temperature Tc at the time ta. Therefore, at time tb when the user is seated on the toilet seat 400, the cool sensation limit temperature Tc has not yet been reached, and the user feels cold, resulting in discomfort to the user.

  Therefore, the control unit 90 of the toilet seat body 200 sets the toilet seat temperature in the standby state where the presence of the user is not detected to a preset standby temperature Tp (18 ° C. in the example of FIG. 4). This means that the temperature at which the temperature of the toilet seat 400 can be raised to the cooling sensation limit temperature Tc between the time ta when the presence of the human body is detected and the time tb when the user is seated on the toilet seat 400 is set as the standby temperature Tp. means. Therefore, as shown by a solid line in FIG. 3, since the temperature rise control from the standby temperature to the cooling sensation limit temperature Tc can be performed from when the user enters the room until the user sits on the toilet seat 400, the user can It can prevent feeling cold. Note that the time from the time ta to the time tb is appropriately determined by experiments, simulations, or the like in consideration of the time required for the user to sit after entering the toilet room. For example, the time from time ta to time tb is set to 6 seconds.

  In the use state after time tb, the control unit 90 determines the temperature difference between the temperature Tx of the seating surface of the toilet seat 400 and the temperature T3 of the toilet seat heater 450 so that the temperature Tx of the seating surface of the toilet seat 400 becomes a predetermined temperature TU. In consideration of ΔT, the energization amount to the toilet seat heater 450 is controlled. The seating surface of the toilet seat 400 on which the user actually sits is detected by the heater temperature detection unit 401a because heat is likely to escape because it is exposed to the outside air compared to the inside of the toilet seat 400 where the heater temperature detection unit 401a is provided. Since the temperature T3 of the toilet seat heater 450 and the temperature Tx of the seating surface of the toilet seat 400 do not coincide with each other and a temperature difference ΔT is generated, the temperature difference ΔT between the temperature Tx of the seating surface of the toilet seat 400 and the temperature T3 of the toilet seat heater is Considering this, by controlling the energization amount of the toilet seat heater, the temperature Tx of the seating surface of the toilet seat can be controlled to the desired temperature TU with high accuracy.

  Subsequently, referring to FIG. 3 again, when the human body detector 600a no longer detects the presence of a human body (No in step S1), the control unit 90 is in a standby state in which no human body exists in the toilet room. The time from the time t0 when the use state is changed to the standby state is measured using the internal timer of the control unit 90 or an external timer (none of which is shown), and the first standby time t1 elapses. Is determined (step S4). In the present embodiment, the control unit 90 determines the time point when the human body detection signal S1 is not received as the time point t0 when the use state is changed to the standby state. As a result, the time t0 when the use state is changed to the standby state can be determined with high accuracy.

  Then, the control unit 90 supplies the ambient temperature T1 transmitted from the remote device 600 to the toilet seat heater 450 within the first standby time t1 from the time t0 when the use state is changed to the standby state (No in step S4). It is used as a room temperature for controlling the energization amount (step S5). That is, the energization amount to the toilet seat heater 450 is controlled so that the temperature of the seating surface of the toilet seat 400 becomes the standby temperature Tp using the latest information related to the ambient temperature T1 stored in the storage unit in step S2.

  As described above, the temperature T3 of the toilet seat heater 450 detected by the heater temperature detection unit 401a does not coincide with the temperature Tx of the seating surface of the toilet seat 400, and a temperature difference ΔT is generated. Furthermore, this temperature difference ΔT changes according to the room temperature. That is, for example, even if the same standby temperature Tp is set, if the room temperature is high, the temperature Tx of the seating surface of the toilet seat 400 becomes higher than the maintenance temperature Tp. Therefore, the temperature of the seating surface of the toilet seat 400 can be maintained at the same standby temperature Tp by controlling the energization amount of the toilet seat heater 450 according to the ambient temperature T1 detected by the first room temperature detector 602.

  In this way, in order to keep the standby temperature Tp constant, the energization amount of the toilet seat heater 450 is precisely controlled in accordance with the change in room temperature, thereby preventing unnecessary energization and energy saving. Further, by keeping the standby temperature Tp constant, the temperature Tx of the seating surface of the toilet seat 400 after the temperature rise control of the toilet seat 400 (after time tb) can be controlled to be constant regardless of the room temperature.

  More specifically, the control unit 90 determines that the ambient temperature T1 transmitted from the first remote device 600 is equal to or higher than the reference temperature Ts within the first standby time t1 from the time t0 when the use state is changed to the standby state. In this case (when T1 ≧ Ts), the toilet seat heater 450 is set so that the energization amount is smaller than when the ambient temperature T1 transmitted from the first remote device 600 is lower than the reference temperature Ts (when T1 <Ts). Controls the amount of electricity applied to the. For example, when it is desired to maintain the temperature Tx of the seating surface of the toilet seat 400 at the standby temperature Tp = 18 ° C., the ambient temperature T1 detected by the first room temperature detector 602 is a temperature lower than the reference temperature Ts (for example, 12 ° C.). If so, the temperature detected by the heater temperature detector 401a is controlled to be 20.5 ° C. If the ambient temperature T1 detected by the first room temperature detector 602 is a temperature between a temperature equal to or higher than a reference temperature Ts (for example, 12 ° C.) and an upper limit temperature of the room temperature (for example, 19.5 ° C.), the heater Control is performed so that the temperature detected by the temperature detection unit 401a is a predetermined temperature lower than 20.5 ° C. (eg, 19.5 ° C.).

  Thus, the temperature of the seating surface of the toilet seat 400 can be controlled with high accuracy by controlling the energization amount to the toilet seat heater 450 according to the ambient temperature T1 detected by the first room temperature detector 602. At the same time, the amount of power supplied to the toilet seat heater 450 can be suppressed to save energy. In addition, since the reference temperature Ts is set in advance and only a simple comparison between the reference temperature Ts and the ambient temperature T1 detected by the first room temperature detector 602 is required, a complicated control circuit ( Controller) can be dispensed with. Therefore, the temperature control can be realized with a simple configuration and cost saving.

  In the present embodiment, an example in which control is performed in two stages according to the room temperature has been described. However, control may be performed in more stages, or may be controlled linearly with respect to the room temperature. By adopting a configuration that controls linearly with respect to room temperature, although the control is complicated, the energization amount of the front heater 450 can be finely controlled, so that energy saving can be further achieved.

  The reference temperature Ts is determined according to the result of an experiment or a simulation from the balance between the obtained energy saving effect and the complexity of the control circuit.

  In addition, the control unit 90 stores the ambient temperature T2 detected by the second room temperature detector 620 after the first standby time t1 has elapsed from the time point t0 when the use state is changed to the standby state (Yes in step S4). (Step S6), and the ambient temperature T2 detected by the second room temperature detector 620 is used as the room temperature for controlling the energization amount to the toilet seat heater 450 (step S7). More specifically, the control unit 90 determines that the ambient temperature T1 transmitted from the first remote controller 600 is equal to or higher than the reference temperature Ts after the first standby time t1 has elapsed from the time point t0 when the use state is changed to the standby state. In some cases (when T1 ≧ Ts), the toilet seat heater is set so that the energization amount is smaller than when the ambient temperature T1 transmitted from the first remote controller 600 is lower than the reference temperature Ts (when T1 <Ts). The amount of current supplied to 450 is controlled.

Here, the first waiting time t1 is set in advance at a temperature detected by the second room temperature detector 620 after the time when the influence of heat by the heater 210, the drying device, etc. disappears. That is, the ambient temperature T2 detected by the second room temperature detector 620 is not adopted until the ambient temperature T2 around the second room temperature detector 620 becomes substantially the same as the room temperature in the toilet room, because the reliability decreases. The specific length of the first waiting time t1 is determined based on the surrounding usage environment (average room temperature or the like) where the toilet seat body 200 is installed and the arrangement conditions of the second room temperature detector 620 in the toilet seat body 200. Determined by rules of thumb. For example, the time when the ambient temperature T2 detected by the second room temperature detector 620 is not adopted is set to 1 hour, and the time is detected by the second room temperature detector 620 after 1 hour and 5 minutes after adding the blank time of 5 minutes. The ambient temperature T2 may be adopted.

  According to the above configuration, the controller 90 uses the ambient temperature T1 detected by the first room temperature detector 602 as the room temperature within the first waiting time t1 after the human body no longer exists in the toilet room, High-precision temperature control can be performed. Furthermore, after the first waiting time t1 has elapsed since the human body no longer exists in the toilet room, the ambient temperature T2 detected by the second room temperature detector 620 provided in the toilet seat body 200 is used as the room temperature. Since the ambient temperature T2 detected by the second room temperature detector 620 can be prevented from being affected by the heat of the heater 210, the drying device, etc. generated when the sanitary washing device 100 is used, the high accuracy can be achieved. Temperature control can be performed. Thus, energy saving can be achieved by detecting the room temperature with high accuracy and controlling the temperature of the toilet seat with high accuracy.

  In the present embodiment, the human body detection signal transmitted to the toilet seat main body 200 when the human body detector 600a detects the presence of the human body is the temperature information related to the ambient temperature T1 detected by the first room temperature detector 602. Although the configuration in which the control unit 90 performs temperature control using the temperature information when the presence of a human body is detected has been described, for example, it is detected by the first room temperature detector 602 in step S5 of FIG. When the ambient temperature T1 becomes necessary, the control unit 90 provides first temperature information including the ambient temperature T1 detected by the first room temperature detector 602 regardless of the detection result of the human body detector 600a. The remote device 600 may be requested to transmit temperature information, or the first remote device 600 may transmit temperature information from the first remote device 600 by periodically transmitting the temperature information. As described above, the ambient temperature T1 detected by the first room temperature detector 602 may be detected in real time. However, even in this case, the controller 90 detects the presence of the human body after the human body detector 600a detects the presence of the human body. Until the first standby time t1 elapses, the ambient temperature T2 detected by the second room temperature detector 620 is not adopted as temperature information. As described above, the ambient temperature detected by the second room temperature detector 620 is the reliability as the room temperature until the first waiting time t1 elapses after the human body detector 600a detects the presence of the human body. This is because the property is low.

  In the present embodiment, when the human body detector 600a detects the presence of a human body, the first remote device 600 starts supplying power from the built-in battery 601 to the first room temperature detector 602, and the human body detector 600a When the presence is not detected, the power supply from the built-in battery 601 to the first room temperature detector 602 is stopped.

  The room temperature detector is preferably provided separately from the toilet seat body in order to prevent the influence of heat generated by the toilet seat heater or the like. The human body detector is also preferably provided separately from the toilet seat body having the toilet seat in order to detect the user's entry or exit from the room with high accuracy. In such a case, it is preferable that the room temperature detector and the human body detector are battery driven in order to increase the degree of freedom of installation, and the temperature information and human body detection information detected by wireless transmission are transmitted to the toilet seat body. However, when the room temperature detector uses a battery as a power source, the temperature information detected by the room temperature detection means is periodically sent to the toilet seat body even when the presence of the human body is not detected by the human body detector. The battery life is shortened.

  Therefore, as in the present embodiment, power is supplied from the built-in battery 601 to the first room temperature detector 602 only while the human body detector 600a detects the presence of the human body, so that the first room temperature detector 602 Since the power supply to the first room temperature detector 602 is stopped while not being used, the first room temperature detector 602 and the first room temperature detector 602 are effectively suppressed while consuming the internal battery 601 as a power source of the first room temperature detector 602. Wasteful energy consumption can be suppressed by performing highly accurate temperature control using a reliable temperature among the ambient temperatures T1 and T2 detected by each of the second room temperature detectors 620 as the room temperature.

  In the present embodiment, the sanitary washing device 100 includes a notification device 280 as a notification unit that notifies the temperature rise state of the toilet seat 400. As a result, blinking starts immediately after the start of the temperature increase control of the toilet seat 400, and when the temperature rises above the cool sensation limit temperature Tc that does not cool even when seated on the toilet seat 400, it is continuously lit, Announce the temperature rise. Moreover, it is good also as notifying a user also at the time of abnormality, such as the disconnection of the toilet seat heater 450 and the thermistor 401a.

  Further, in step S3 of FIG. 3, the control unit 90 determines the ambient temperature T1 and the second temperature detected by the first room temperature detector 602 within the first standby time t1 from the time t0 when the use state is changed to the standby state. When any of the surrounding temperatures T2 detected by the room temperature detector 620 is equal to or higher than the reference temperature Ts, control for reducing the energization amount to the toilet seat heater 450 may be performed.

  FIG. 5 is a flowchart showing a control flow for determining whether or not to perform temperature control using the first room temperature detector. In this example, in step S5 of the control shown in FIG. 3, the control unit 90 acquires the ambient temperature T2 detected by the second room temperature detector 620 and stores it in the storage unit. As shown in FIG. 5, the control unit 90 determines whether or not the ambient temperature (first room temperature) T1 detected by the first room temperature detector 602 stored in the storage unit is equal to or higher than the reference temperature Ts ( Step S31). When the first room temperature T1 is equal to or higher than the reference temperature Ts (Yes in step S31), the control unit 90 determines whether the ambient temperature (second room temperature) T2 detected by the second room temperature detector 620 is equal to or higher than the reference temperature Ts. Is determined (step S32). When the second room temperature T1 is equal to or higher than the reference temperature Ts (Yes in Step S32), the control unit 90 performs control to reduce the energization amount to the toilet seat heater 450 with respect to the same target temperature (Step S33). Even if the first room temperature T1 is equal to or higher than the reference temperature Ts, if the second room temperature T2 is less than the reference temperature Ts (No in step S32), the control unit 90 does not reduce the energization amount to the toilet seat heater 450. The normal energization amount is controlled (step S34). For example, when the standby temperature is set to 18 ° C., the control unit 90 sets the target temperature detected by the heater temperature detection unit 401a to 20.5 ° C. during normal control, and sets the first room temperature T1 and the first temperature. If the two room temperatures T2 are both equal to or higher than the reference temperature Ts (for example, 12 ° C.), the target temperature detected by the heater temperature detection unit 401a is set to 19.5 ° C. In the present embodiment, the example in which the reference temperature of the first room temperature T1 and the reference temperature of the second room temperature T2 are both the same temperature Ts has been described, but the respective reference temperatures may be different. In particular, since it is assumed that the second room temperature T2 is likely to be higher than the first room temperature T1, the reference temperature of the second room temperature T2 may be set higher than the reference temperature of the first room temperature T1.

  Thus, even if the ambient temperature T1 detected by the first room temperature detector 602 is equal to or higher than the reference temperature Ts, the ambient temperature T2 detected by the second room temperature detector 620 is lower than the reference temperature Ts. Since the control to reduce the energization amount to the toilet seat heater 450 is not performed, even if the ambient temperature detected by the first room temperature detector 602 is erroneously detected as a high temperature, The energization amount does not decrease and the temperature of the toilet seat 400 does not decrease too much, and it is possible to prevent the user from feeling cold.

  Note that the control unit 90 detects the temperature of both the first room temperature detector 602 and the second room temperature detector 620 even when using either the first room temperature detector 602 or the second room temperature detector 620. If temperature information cannot be obtained from any of the above, the energization amount to the toilet seat heater 450 is controlled without using the ambient temperatures T1 and T2 detected by the first room temperature detector 602 and the second room temperature detector 620. Also good.

  As described above, the energization amount control for the toilet seat heater 450 using the room temperature is performed only when the ambient temperature can be detected in both the first room temperature detector 602 and the second room temperature detector 620. In addition, it is possible to prevent erroneous temperature information from being used for the energization amount control of the toilet seat heater 450, and to improve the reliability of the sanitary washing device 100.

  Furthermore, it may be determined in advance whether or not the energization amount of the toilet seat heater 450 is controlled according to a change in room temperature with respect to the same target temperature (standby temperature). FIG. 6 is a flowchart showing a control flow for determining whether or not room temperature control is possible.

  As shown in FIG. 6, first, the control unit 90 determines whether or not the first room temperature detector 602 is normal (step SA1). Specifically, when receiving the entry signal, the control unit 90 reads temperature information related to the ambient temperature T1 detected by the first room temperature detector 602 included in the entry signal, and the ambient temperature T1 is a predetermined value. It is determined whether it is within the temperature range. Here, the predetermined temperature range means a temperature range that can normally be assumed, and out of the predetermined temperature range means that the first room temperature detector 602 has failed. When there is no abnormality in the first room temperature detector 602 (No in Step SA1), the control unit 90 determines whether or not room entry detection has been performed except for the human body detector 600a (Step SA2). That is, it is determined whether or not there is an abnormality in the human body detector 600a. Specifically, before receiving the entry signal from the human body detector 600a, the seating sensor 610 detects the seating on the toilet seat 400, and various operation inputs such as an on / off operation of the cleaning device and the drying device are performed. If it is broken, the control unit 90 determines that entry into the room is detected by a device other than the human body detector 600a. Furthermore, when there is no abnormality in the human body detector 600a (No in Step SA2), the control unit 90 determines whether or not the first room temperature detector 602 is out of battery (Step SA3). Specifically, the first remote device 600 monitors whether or not the voltage V of the built-in battery 601 is less than a predetermined voltage value V1. As a result, the transmitter 603 is controlled to transmit a battery exhaustion signal indicating a battery exhaustion state. The control unit 90 determines whether or not such a battery exhaustion signal has been received. If the signal has not been received (Yes in step SA3), the control unit 90 determines that room temperature control is possible, and FIG. 4 and FIG. Is controlled (step SA4). That is, when all the determinations in step SA1 to step SA3 are No, the control unit 90 performs room temperature control. On the other hand, if the determination in step SA1 to step SA3 is Yes, the control unit 90 determines that room temperature control is not possible, and does not perform the control of FIGS. 4 and 5 (step SA5). At this time, the control unit 90 controls the energization amount to the toilet seat heater 450 based only on the temperature of the toilet seat 400 detected by the heater temperature detection unit 401a. In such room temperature control availability determination, the control unit 90 determines whether or not an abnormality of the first room temperature detector 602 occurs within a predetermined period, whether or not an abnormality of the human body detector 600a occurs, and It is preferable to determine whether or not the first room temperature detector 602 has run out of battery, and if any one of them is met, the room temperature control is not performed in the subsequent period.

  As described above, when the first room temperature detector 602 or the human body detector 600a is abnormal, the room temperature control is not performed based on the signals transmitted from these, so the temperature of the toilet seat 400 is the actual room temperature. Can be prevented from being controlled based on different temperatures, and can prevent the user from feeling uncomfortable.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various improvements, changes, and modifications can be made without departing from the spirit of the present invention.

  For example, the human body detection mode in the human body detector 600a is not limited to this embodiment. For example, the human body detector is configured to detect the presence or absence of a human body in the toilet room at a preset time interval, and the first remote controller 600 detects the presence of the human body in the toilet room. If the human body absence signal S2 indicating the absence of the human body is transmitted to the toilet seat body 200 at a preset time interval, and the human body detector detects the presence of the human body in the toilet room, the human body absence signal S2 is transmitted. You may comprise so that it may not transmit to the toilet seat main body 200. FIG. In this case, the control unit 90 may determine the time when the human absence signal S2 is transmitted as the time t0 when the use state is changed to the standby state.

  Alternatively, the human body detector is configured to detect the presence or absence of a human body in a toilet room at a preset time interval, and the first remote device 600 detects the presence of a human body in the toilet room. The human body detection signal S1 indicating the presence of the human body is transmitted to the toilet seat body 200 at a preset time interval while the human body detector is not detecting the presence of the human body in the toilet room. You may comprise so that the human body absence signal S2 which shows the absence of a human body in a time interval may be transmitted to a toilet seat main body. In this case, the control unit 90 may determine the time point when the human body absence signal S2 is transmitted instead of the human body detection signal S1 as the time point t0 when the use state changes to the standby state.

  Moreover, in the said embodiment, although it was set as the structure which communicates between the 1st remote device 600 and the 2nd remote device 300, and the toilet seat main body 200 wirelessly, it is good also as a structure which communicates by wire.

  In the above embodiment, the first remote device 600 and the second remote device 300 are driven by the built-in battery 601, but may be driven by a commercial power source.

  Thus, the typical aspect of the sanitary washing device according to the present invention includes a toilet seat, a heater that heats water supplied from the outside to generate hot water, and a hot water ejection unit that ejects the warm water to the outside. A toilet seat body, a toilet seat heater provided in the toilet seat for electrically heating the toilet seat, a heater temperature detector for detecting a temperature T3 of the toilet seat heater, and a toilet body separately from the toilet seat body A first room temperature detector provided in the room for detecting an ambient temperature T1 and a human body detector for detecting the presence or absence of a human body in the toilet room, the ambient temperature T1 detected by the first room temperature detector; A remote device that transmits the detection result of the presence or absence of the human body detected by the human body detector to the toilet seat body, a second room temperature detector that is provided in the toilet seat body and detects an ambient temperature T2, and the remote device The presence or absence of a human body sent from Based on the result, it is determined whether the human body is in a use state where the human body is present in the toilet room or the standby state where the human body is not present in the toilet room, and the ambient temperature T1 transmitted from the remote device, the second Control for controlling the energization amount to the toilet seat heater based on at least one of the ambient temperature T2 detected by the room temperature detector and the temperature T3 of the toilet seat heater detected by the heater temperature detector. And the control unit energizes the toilet seat heater with the ambient temperature T1 transmitted from the remote device within a first standby time t1 from the time t0 when the use state is changed to the standby state. The ambient temperature T2 detected by the second room temperature detector after the first waiting time t1 has elapsed is used to control the energization amount to the toilet seat heater. Adapted for use as a room temperature for.

  According to the above configuration, within the first waiting time t1 after the human body no longer exists in the toilet room, the control unit uses the ambient temperature T1 detected by the first room temperature detector as the room temperature, thereby achieving high accuracy. Temperature control can be performed. Furthermore, after the first waiting time t1 has elapsed since the human body no longer exists in the toilet room, the ambient temperature T2 detected by the second room temperature detector provided in the toilet seat body is used as the room temperature. 2 Since it is possible to prevent the ambient temperature T2 detected by the room temperature detector from being affected by the heat of the toilet seat heater generated when the sanitary washing device is used, highly accurate temperature control can be performed. Thus, energy saving can be achieved by detecting the room temperature with high accuracy and controlling the temperature of the toilet seat with high accuracy.

  According to another aspect of the present invention, in addition to the representative aspect, the control unit transmits from the remote unit within the first standby time t1 from the time t0 when the use state is changed to the standby state. When the ambient temperature T1 is equal to or higher than the reference temperature Ts, the energization to the toilet seat heater is reduced so that the energization amount is smaller than when the ambient temperature T1 transmitted from the remote device is lower than the reference temperature Ts. Control the amount.

  Thereby, the temperature of the toilet seat can be controlled with high accuracy by controlling the energization amount to the toilet seat heater in accordance with the ambient temperature T1 detected by the first room temperature detector, and the energization to the toilet seat heater. Energy can be saved by reducing the amount. In addition, since the reference temperature Ts is set in advance and the reference temperature Ts is compared with the ambient temperature T1 detected by the first room temperature detector, the temperature control can be performed with a simple configuration. Can be realized at a cost.

  According to still another aspect of the present invention, in addition to the representative aspect, the control unit is configured so that, in the use state, the temperature Tx of the seating surface of the toilet seat becomes a predetermined temperature TU. In consideration of the temperature difference ΔT between the temperature Tx of the seating surface and the temperature T3 of the toilet seat heater, the energization amount to the toilet seat heater is controlled.

  Since the temperature Tx of the seating surface of the toilet seat on which the user actually sits is different from the temperature T3 of the toilet seat heater, the temperature difference ΔT between the temperature Tx of the seating surface of the toilet seat and the temperature T3 of the toilet seat heater is taken into consideration. By controlling the energization amount of the toilet seat heater, the temperature Tx of the seating surface of the toilet seat can be controlled to the desired temperature TU with high accuracy.

  According to still another aspect of the present invention, in addition to the representative aspect, the human body detector is configured to detect presence or absence of a human body in the toilet room at a preset time interval, The remote unit transmits a human body detection signal S1 indicating the presence of a human body to the toilet seat body at a preset time interval while the human body detector detects the human body, and the human body detector detects the presence of the human body. While not detecting, the human body detection signal S1 is configured not to be transmitted to the toilet seat body, and the control unit determines when the human body detection signal S1 is not received from the use state to the standby state. It is determined as the time t0 when the state changes.

  As a result, the time t0 when the use state is changed to the standby state can be determined with high accuracy.

  According to still another aspect of the present invention, in addition to the representative aspect, the control unit detects the first room temperature detection within a first standby time t1 from a time point t0 when the use state is changed to the standby state. When the ambient temperature T1 detected by the detector and the ambient temperature T2 detected by the second room temperature detector are both equal to or higher than the reference temperature Ts, the ambient temperature T1 transmitted from the remote device is the reference temperature. The energization amount to the toilet seat heater is controlled so that the energization amount is smaller than the case where it is less than Ts.

  Thus, even if the ambient temperature T1 detected by the first room temperature detector is equal to or higher than the reference temperature Ts, the toilet seat heater is used when the ambient temperature T2 detected by the second room temperature detector is lower than the reference temperature Ts. Therefore, even if the ambient temperature T1 detected by the first room temperature detector is erroneously detected as a high temperature, the amount of power supplied to the toilet seat heater is reduced. Therefore, the temperature of the toilet seat is not lowered too much, and it is possible to prevent the user from feeling cold.

  According to still another aspect of the present invention, in addition to the representative aspect, when the control unit cannot obtain temperature information from any of the first room temperature detector and the second room temperature detector, The energization amount to the toilet seat heater is controlled without using the ambient temperatures T1 and T2 detected by the first room temperature detector and the second room temperature detector.

  Thereby, since the energization amount control to the toilet seat heater using the room temperature is performed only when the ambient temperatures T1 and T2 are in a detectable state in both the first room temperature detector and the second room temperature detector, It is possible to prevent erroneous temperature information from being used for energization control of the toilet seat heater, and to improve the reliability of the sanitary washing device.

  According to still another aspect of the present invention, in addition to the representative aspect, the remote unit includes a built-in battery that drives the first room temperature detector and the human body detector, and the human body detector is a human body. When the presence of a human body is detected, power supply from the built-in battery to the first room temperature detector is started. When the human body detector no longer detects the presence of a human body, the built-in battery detects the first room temperature detector. Stop power supply to

  The room temperature detector is preferably provided separately from the toilet seat body in order to prevent the influence of heat generated by the toilet seat heater or the like. The human body detector is also preferably provided separately from the toilet seat body having the toilet seat in order to detect the user's entry or exit from the room with high accuracy. In such a case, the room temperature detector and the human body detector are battery driven in order to increase the degree of freedom of installation, and it is considered that the temperature information and human body detection information detected by wireless transmission are transmitted to the toilet seat body. . However, when the room temperature detector uses a battery as a power source, the temperature information detected by the room temperature detection means is periodically sent to the toilet seat body even when the presence of the human body is not detected by the human body detector. The battery life is shortened.

  By setting it as the said aspect, since the electric power supply to a 1st room temperature detector is stopped while a 1st room temperature detector is not utilized, the consumption of the internal battery which is a power supply of a 1st room temperature detector is suppressed effectively However, useless energy is obtained by performing highly accurate temperature control using a reliable temperature among the ambient temperatures T1 and T2 detected by the first room temperature detector and the second room temperature detector as the room temperature. Consumption can be suppressed.

  The sanitary washing device of the present invention is useful for achieving energy saving by detecting the room temperature with high accuracy and performing temperature control of the toilet seat with high accuracy.

40 Washing nozzle 90 Control unit 100 Sanitary washing device 200 Toilet seat body 210 Heater 220 Hot water ejection unit 280 Alarm 300 Second remote device 400 Toilet seat 401a Heater temperature detection unit 402 Heater drive unit 403 Reception unit 450 Toilet seat heater 500 Toilet lid 600 1 remote device (remote device)
600a Human body detector (exit detector)
601 Built-in battery 602 First room temperature detector 603 Transmitter 610 Seating sensor 620 Second room temperature detector 700 Toilet bowl

Claims (4)

A toilet seat body having a toilet seat, a heater that heats water supplied from the outside to generate hot water, and a hot water jet part that jets the hot water to the outside;
A toilet seat heater provided inside the toilet seat for electrically heating the toilet seat;
Provided in the toilet room separately from the toilet seat body, having a first room temperature detector for detecting the ambient temperature T1, and transmitting the ambient temperature T1 detected by the first room temperature detector to the toilet seat body A remote to
A second room temperature detector provided on the toilet seat body for detecting an ambient temperature T2,
A heater temperature detector for detecting the temperature T3 of the toilet seat heater;
An exit detector for detecting that the user has exited the toilet room;
Based on the temperature T3, the amount of current supplied to the toilet seat heater is controlled, and a controller that determines that a waiting state is detected when the exit detector detects exit,
With
The remote is driven by a built-in battery;
The first room temperature detector is also supplied with power from the built-in battery, and when the exit detector detects exit, the power supply from the built-in battery is stopped.
When the power supply from the built-in battery to the first room temperature detector is stopped, the control unit stops the power supply to the first room temperature detector with the target temperature of the toilet seat heater in the standby state. Determining based on the temperature T1 detected before being performed, and then determining the target temperature based on the temperature T2.
Sanitary washing device. The remote device has the exit detector,
The exit detector is composed of a human body detector that detects the presence or absence of a human body in the toilet room,
If the human body detector detects the presence of a human body, power supply from the built-in battery to the first room temperature detector is started. If no human body is detected, power supply from the built-in battery is stopped. It is characterized by
The sanitary washing device according to claim 1. When the human body detector detects the presence of the human body, the control unit controls the energization amount of the toilet seat heater so that the temperature of the seating surface of the toilet seat is increased from a standby temperature Tp in a standby state to a predetermined temperature TU. Configured to control,
The standby temperature Tp is a cooling sensation limit temperature Tc at which the user does not feel cold even if the user touches the toilet seat after the presence of the human body is detected by the human body detector in the toilet seat heater. It is set as a temperature that can be increased to
The sanitary washing device according to claim 2. The remote device is configured to transmit a battery exhaustion signal to the control unit when the built-in battery becomes less than a predetermined voltage,
The control unit, when receiving the battery dead signal, controls the energization amount to the toilet seat heater so that the temperature of the seating surface of the toilet seat becomes a predetermined temperature TU based on the temperature T3. To
The sanitary washing device according to any one of claims 1 to 3.

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