JP2006034394A - Heating device with bactericidal function, and heated toilet seat and toilet apparatus using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe heated toilet seat which performs bactericidal heating action and does not damage the human body even if a user accidentally touches the toilet seat during the bactericidal action. <P>SOLUTION: A heated toilet seat is provided with a toilet seat 22 which has a cavity section 29 inside, a radiant heating element 32 which is installed in the cavity 29, a toilet seat body made of a radiant energy-transparent material, a radiant energy absorptive layer 42 provided to the outer surface of the seat section 30, and the heated toilet seat performs bactericidal action and is safe even if a user accidentally touches the heated section during the bactericidal action as it controls heating of the seat section 30 at temperature which does not damage the human body by a control section 50. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heating device having a sterilizing function, a heating toilet seat equipped with the heating device, and a toilet device including the heating toilet seat.

In this type of conventional heated toilet seat, as shown in FIG. 10, the toilet seat 1 is made of aluminum or an alloy thereof, and the seating surface 3 is heated to a high temperature by an electric heater 2 embedded in the toilet seat 1, and the temperature of the toilet seat 1 is increased. In some cases, the seating surface 3 of the toilet seat 1 is sterilized by holding for a predetermined time (see, for example, Patent Document 1).
JP-A-2-36828

  However, in the conventional configuration, the toilet seat surface is heated to a high temperature of about 130 ° C. in order to carry out sterilization, and the toilet seat is made of aluminum having a high thermal conductivity. There was concern that touching the toilet seat by mistake immediately after sterilization could damage the human body.

  In view of the above-described conventional problems, the problem to be solved by the present invention is to provide a heating device that is safe even if a user accidentally touches a seat during a sterilization operation.

  In order to solve the above-mentioned problems, the present invention includes a control unit that controls energization of a radiation-type heating element and heats and disinfects a seating part at a temperature that does not damage the human body.

  The heating device of the present invention can suppress the growth of mold and bacteria in the seating section, and is safe even if the user accidentally touches or sits on the seating section during the sterilization operation, and also uses no chemicals. It is safe for the human body to touch.

  According to a first aspect of the present invention, there is provided a seating portion formed of a material that transmits radiation energy, a radiation-type heating element that radiates radiant energy provided inside the seating portion, an outer surface side of the seating portion, and the radiation A radiation energy absorbing layer that absorbs energy and heats the outer surface of the seating portion, and a control unit that controls energization of the radiation-type heating element so as to heat the seating portion at a temperature that does not damage the human body during sterilization It is a heating device provided with.

  Thereby, growth of mold and fungi is suppressed, and a hygienic heating device can be obtained. Moreover, it is safe even if the user touches the seating part accidentally during the sterilization operation, and it is safe even if the human body touches it because no chemicals are used. In addition, the temperature of the seating portion can be increased in a short time, thus saving energy. In addition, when the heating operation is stopped and the temperature of the seating portion is lowered, the temperature can be lowered in a short time, so that the temperature can be quickly set.

  In a second aspect of the invention, in the first aspect of the invention, in the first aspect of the invention, the control unit is in the sterilization heating control of the seating portion, and after the seating portion has reached a temperature higher than the sterilization set temperature, It is the structure which hold | maintains. Thereby, since a lot of thermal shocks can be given to mold and fungi at a temperature higher than the sterilization set temperature, a more sanitary heating device can be obtained. In addition, since the temperature can be quickly raised to the sterilization set temperature, the sterilization time can be shortened.

  In a third aspect of the invention, in particular, in the first or second aspect of the invention, the control unit is provided with temperature detection means for detecting the temperature of the seating portion heated by the radiation type heating element, and the radiation type is determined by a signal from the temperature detection means. It is the structure which controls a heat generating body. As a result, fine temperature control is possible, and an abnormal temperature rise, a heat generation stop of the radiation type heating element, and the like can be detected, and an appropriate response can be made when an abnormality occurs.

  In the fourth invention, in particular, the radiant heating element according to any one of the first to third inventions is used as a lamp heater. Thereby, high temperature rising performance can be obtained.

  In particular, the fifth invention is the one of the first to fourth inventions, in which a sterilization switch that starts sterilization by being pressed is provided. Thereby, sterilization can be performed aiming at a time zone in which the frequency of using the heating device is low, and usability can be improved.

  In the sixth aspect of the invention, in particular, in the fifth aspect of the invention, while the user is seated, the control unit does not start sterilization even if the sterilization switch is pushed. As a result, even if the sterilization switch is pushed by mistake during sitting, the sterilization mode is not entered, and the seating portion does not become hot, so that it can be used safely.

  In a seventh aspect of the invention, in particular, in any one of the first to sixth aspects of the invention, a notification means for notifying that sterilization is being performed is provided. As a result, it can be recognized that sterilization is in progress, so that it can be used safely without being seated without noticing.

  In an eighth aspect of the invention, in particular, in any one of the first to seventh aspects of the invention, the control unit is configured to continue the notification by the notification means for a predetermined time after the end of the sterilization. Thereby, even after the sterilization is completed, the notification is continued until the seating surface temperature is lowered, so that there is no discomfort at the time of sitting and it can be used comfortably.

  In the ninth aspect of the invention, in particular, in any one of the first to eighth aspects of the invention, the place to be sterilized is at least the upper surface of the seating portion. As a result, it is possible to disinfect the seating portion with which the human body comes into contact when sitting, and a hygienic heating device can be provided.

  In a tenth aspect of the invention, in particular, in any one of the first to ninth aspects, the place to be sterilized is other than the upper surface of the seating portion. Thereby, for example, in a heated toilet seat provided with a heating device, it is possible to sterilize the lower surface of the toilet seat contaminated by splattered sewage and the like, and a sanitary heated toilet seat can be provided.

  The eleventh aspect of the invention is particularly a heated toilet seat equipped with the heating device of any one of the first to tenth aspects of the invention, whereby the action of any one of the first to tenth aspects of the invention is obtained, and hygiene is achieved. Can provide a modern heated toilet seat.

  The twelfth invention is a toilet device in which the heating toilet seat of the eleventh invention is provided on the toilet, and the operation of the heated toilet seat of the eleventh invention is obtained, and a toilet device having a comfortable use environment can be provided.

  The object of the present invention can be achieved by making the main parts of the first to twelfth inventions into embodiments, so that the details of the embodiments corresponding to each claim will be described below with reference to the drawings. It will be described and the best mode for carrying out the present invention will be described. The present invention is not limited to the present embodiment. Further, in the description of the present embodiment, the same reference numerals are given to the same configurations and the effects and the same description is not repeated.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram showing a cross section of a main part of a toilet seat of a heating toilet seat equipped with a heating device according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of a toilet device equipped with the heating toilet seat, and FIG. FIG. 4 is a cross-sectional view of a main part of a seating portion of the heating toilet seat.

  1 to 4, a horizontally long main body 21 is attached to the rear end portion of the toilet bowl 20, and a hot water cleaning function is provided in the main body 21 for injecting hot water into a local part of the human body after the toilet. A ring-shaped toilet seat 22 and a toilet lid 23 mounted on the toilet bowl 20 are rotatably provided. The main body 21 includes a human body detection sensor 24 for detecting the presence or absence of a human body in the toilet room using infrared rays, and a seating detection sensor 25 for detecting the user's seating on the toilet seat 22. Further, the main body 21 is provided with a sterilization switch 26 for performing sterilization of the toilet seat 22 and an LED 27 as a notification means for informing by flashing that the toilet seat 22 is hot during sterilization. As shown in FIG. 1, the toilet seat 22 forms a toilet seat case 28 by welding and joining two upper and lower members made of synthetic resin at the inner and outer peripheral edges of each, and the interior of the toilet seat 22 is filled with water and the like. The structure has a sealed cavity 29 that can be blocked.

  The ring-shaped toilet seat case 28 has an aluminum plate as a mirror surface facing a seat portion 30 corresponding to the upper surface of the toilet seat 22 on which a user who uses the toilet apparatus sits in the left and right cavities 29 placed on the left and right sides of the toilet 20. The radiant energy reflecting plate 31 having a bent portion 31a that is finished and has the entire inner and outer end portions inclined upward, and the radiant energy reflecting plate 31 so that the radiant energy can be efficiently taken out to the seating portion 30. The two lamp heaters 32, which are located on the top and have a function of immediate heating / cooling (heating quickly when energized, heating quickly, and cooling quickly when energized), match the shape of the toilet seat 22 Is provided.

  Accordingly, the seat 30 of the toilet seat 22 is immediately warmed by receiving light radiated radially by the lighting of the lamp heater 32. In the present embodiment, two lamp heaters 32 are used. However, no matter how many lamp heaters 32 are used, there is no problem as long as the object of the present invention can be achieved. A thermostat 33 and a thermal fuse 34 that are electrically connected in series with the lamp heater 32 are provided in the vicinity of the lamp heater 32, and act to prevent overheating in the event of an unsafe situation. If the thermostat 33 and the thermal fuse 34 are provided so as to correspond to the two lamp heaters 32, the safety is further improved.

  The lamp heater 32 is configured by penetrating a filament 36 made of tungsten and enclosing a halogen gas 37 inside a glass tube 35, and repeats a halogen cycle reaction that forms tungsten halide as the filament 36 generates heat. Thus, the filament 36 is prevented from being consumed. By this action, the filament 36 having a very small heat capacity can be used as a heat source, and an extremely steep rise can be performed. The lamp heater 32 is fixed to the radiant energy reflecting plate 31 by a lamp heater fixture 39 having a rubber bush 38 that is an elastic material, and the radiant energy reflecting plate 31 is fixed to a lower member of the toilet seat case 28 by rubber feet 40. Yes.

  FIG. 4 is a cross-sectional view of the main part of the upper member of the toilet seat case 28 of the heating toilet seat. The toilet seat case 28 constituting the toilet seat 22 is made of a transparent polypropylene resin material, and a radiant energy absorption layer 42 containing a large amount of carbon black is formed on the upper surface of the case body 41, and further emitted from the lamp heater 32 thereon. The surface decorative layer 43 is formed as a light blocking layer that shields all visible light and considers surface hardness, chemical resistance, gloss, and the like.

  Since the toilet seat case 28, the radiant energy absorbing layer 42, and the surface decorative layer 43 are all made of resin, if the thermal conductivity is low and the toilet seat surface temperature is up to about 75 ° C., it is only a short time. There is no burn even if the human body comes into contact. The seat portion 30 of the toilet seat case 28 is heated by a radiant energy absorbing layer 42 that absorbs the radiant energy of the lamp heater 32 that has passed through the case body 41 and immediately heats the radiant energy without being conducted. It is configured to cool immediately when power is turned off.

  The case body 41 of the toilet seat case 28 constituting the toilet seat 22 is formed of a transparent polypropylene resin material with an average thickness of 2.5 mm, so that the radiation energy transmittance is set to 70% or more, and at the same time, the rigidity of the toilet seat 22 is increased. It functions as a structural rectangle. The formed radiation energy absorbing layer 42 has a thickness of 0.1 mm, and the surface decorative layer 43 has a thickness of 0.2 mm. These layers completely absorb the radiation energy transmitted through the case body 41 and have a heat capacity. Is so small that the temperature rises instantaneously and at the same time the radiation visible light is completely shielded. In addition, although the example which used the transparent polypropylene resin material was given for the toilet seat case 28, if it is transparent resin, such as a transparent polyethylene resin material, an ABS resin, and an acrylic resin, the objective of this invention can be achieved. Further, even if the surface decorative layer 43 does not block all visible light emitted from the lamp heater 32, the object of the present invention can be achieved.

  Further, the case body 41 of the toilet seat case 28 constituting the toilet seat 22 is provided with a thermistor 44 as a temperature detecting means in a recess opened on the inner surface thereof, so that the temperature in the vicinity of the radiation energy absorbing layer 42 can be detected. It has become. Since the thermistor 44 is provided corresponding to the seating portion 30 heated by the two lamp heaters 32, it is possible to perform fine temperature control for controlling each temperature separately, an abnormal temperature rise, and a lamp A stoppage of heat generation of the heater 32 can also be detected and can be appropriately handled.

  The toilet seat 22 has an electrode 46 formed on the rotation shaft 45 thereof, and constitutes a toilet seat position detecting means 47 together with a bearing portion (not shown) of the main body 21, and the toilet seat 22 is in an upright state or seated for use. It is designed to detect whether the use position is substantially horizontal.

  The main body 21 takes in a detection signal of a room temperature thermistor 48 as a room temperature detection means, controls the temperature of the lamp heater 32, and energizes the lamp heater 32 of the toilet seat 22 to start the temperature rise. There is provided a control unit 50 including a microcomputer having a timer unit 49 for counting and peripheral circuits thereof. Then, the control unit 50 takes in signals from the human body detection sensor 24, the seating detection sensor 25, and the toilet seat position detection means 47 to control the start and stop of energization of the lamp heater 32, and the signals from the thermistor 44 and the room temperature thermistor 48. The temperature of the lamp heater 32 can be controlled so that the temperature of the seating portion 30 that is taken in and becomes a warming surface becomes a predetermined temperature that is an appropriate temperature.

  Further, when the sterilization switch 26 is pushed, the control unit 50 takes in the signal and starts energizing the lamp heater 32, and sets the seating portion 30 of the toilet seat 22 to a predetermined temperature (a temperature that does not damage the human body). In order to perform the sterilization operation of the toilet seat 2, and in the heat sterilization control of the seating portion 30, after the seating portion 30 has reached a temperature higher than the sterilization set temperature, the sterilization setting is performed. A program for executing a control sequence shown in a time chart of FIG. 5 described later is stored so as to maintain the temperature. Further, as long as the seating signal from the seating detection sensor 25 is input, the control unit 50 stores a program that does not perform sterilization control even if a sterilization start signal is input from the sterilization switch 26.

  If the sterilization switch 26 is provided in this manner, toilet seat sterilization can be executed at any time. For example, by pressing the toilet seat sterilization switch 26 and performing sterilization of the toilet seat during times when the usage frequency of the hot water cleaning device is low, the possibility of using the heated toilet seat for sterilization during sterilization is low. Become. In addition, there is a method in which even when the sterilization switch 26 is not provided, a time zone in which the toilet is not used is learned and sterilization is performed in a time zone where the frequency of use is low.

  Furthermore, as it can be seen that the toilet seat is being sterilized, during the sterilization, it can be confirmed whether the toilet seat is being sterilized by blinking the LED 27 as a notification means. It can be used safely and safely. As the notification means, there are a method that appeals to the sight in this way, and a method that appeals to the sight by sounding a buzzer, for example.

  In addition, by notifying only during sterilization, but by controlling with the control unit 50 that incorporates the temperature of the seating portion 30 by the thermistor 44 so as to continue to be notified until the toilet seat surface temperature is sufficiently lowered even after sterilization ends, The toilet seat surface temperature immediately after the end of sterilization will not be seated on the toilet seat. Therefore, it is possible to provide a warm toilet seat that can be used comfortably without causing the user to feel uncomfortable.

  About the heating toilet seat for the warm water washing | cleaning comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. When the user enters the toilet, the human body detection sensor 24 detects this and a signal is sent to the control unit 50. At this time, when it is confirmed by the signal from the toilet seat position detecting means 47 that the toilet seat 22 is in a substantially horizontal use position, the control unit 50 starts energizing the lamp heater 32. By this initial energization, the input energy is instantaneously converted into radiant energy and radiated from the filament 36 toward the case body 41 through the glass tube 35 and the radiant energy reflector 31. The radiant energy is partially absorbed or reflected inside the case body 41, but most of it is transmitted and contributes to the temperature rise of the radiant energy absorbing layer 42 and the surface decorative layer 43. Therefore, after the controller 50 detects that the user has entered the toilet room by the human body detection sensor 24, the lamp heater 32 starts to raise the temperature of the seating section 30, and the user lowers the clothes and the seating section 30. For example, the temperature of the seating section 30 can be instantaneously increased to an appropriate temperature in several seconds until the user is seated. Therefore, it is possible to realize a very power-saving heating toilet seat that does not need to be energized at all times and keep the toilet seat 22 warm.

  Based on the signals of the thermistor 44 and the room temperature thermistor 48 at the start of energization, the control unit 51 calculates the temperature difference between them and the respective temperatures, and sets the initial energization time limit for initial energization that is set and stored in advance. When a value is selected and the elapsed time counted by the timer unit 49 reaches the energization limit time, the energization amount is reduced or zero, and then the seating unit 30 of the toilet seat 22 is set to an appropriate temperature based on a signal from the thermistor 44. Control the energization amount.

  As a result, the thermistor 44 detects the temperature in the vicinity of the seating section 30 that is actually touched by the user, and the control section 50 accurately raises and maintains the temperature to an appropriate temperature, so that the toilet seat 22 can be used comfortably. Since the input amount of radiant energy is controlled in accordance with the load amount based on the signal from the thermistor 48, it can be heated to an appropriate temperature with higher accuracy and safety.

  Next, when the user is seated for defecation, the output range in which the halogen cycle is effective as described above until the energization amount to the lamp heater 32 is zero or the toilet seat temperature does not rise excessively by the signal of the seating detection sensor 25. Control by changing the energization cycle. Thereby, the toilet seat temperature does not rise excessively during use, there is no worry of causing burns, etc., it is safe and secure, and the user can use it comfortably.

  In particular, since the heated toilet seat is seated with the skin in direct contact with the toilet seat 22 with a built-in heater, sufficient consideration is required for safety. Although it can be used safely and comfortably as described above in a normal use state, in the unlikely event that a microcomputer (not shown) malfunctions for some reason and the lamp heater 32 is continuously energized, etc. It is necessary to operate safely. In the present embodiment, a thermostat 33 is used to realize this.

  In the above embodiment, the lamp heater 32 is described as being provided with a pair of left and right, but is not limited thereto. Moreover, although the radiation energy absorption layer 42 and the surface decorative layer 43 are configured to completely shield light and radiation emitted from the lamp heater 32, some or most of them may be intentionally transmitted.

  Next, a method for sterilizing the toilet seat 22 will be described. When performing the sterilization of the toilet seat, the control unit 50 executes the sterilization switch 26 of the main body 21 of the heating toilet seat by pushing the button. That is, the push button of the sterilization switch 26 first detects whether or not the user is seated by the seating detection sensor 25, and shifts to the toilet seat sterilization operation only when not seated. Do not execute. Thereby, the toilet seat 22 does not become high temperature at the time of sitting, and safety improves.

When the sterilization switch 26 is pushed in the non-sitting state, the control unit 50 that takes in these signals controls the surface temperature of the seating unit 30 of the toilet seat 22 as shown in the time chart of FIG. That is, the time when the sterilization switch 26 to t ₁ is the push button, the lamp current to the heater 32 is started, a temperature T than the set temperature T ₂ at the time of sterilization of the surface temperature T ₃ of the seating section 30 of the normal state Overshoot to ₁ . Thereafter, it lowered to reduce the power supply amount to the eradication set temperature T _2, performing the sterilization operation of the predetermined time (time t ₃ ~t _4).

Here, after overshooting to temperatures T _1, by performing sterilization by sterilizing the set temperature T _2, when performing heating sterilization at a temperature control which does not overshoot to a temperature T ₁ of 6 As compared with the total sterilization time t _{1 to} t _{5 to} t ₆ , the total sterilization time t _{1 to} t ₄ when performing temperature control for overshooting to the temperature T _{1 as} shown in FIG. It can be shortened. Therefore, the time during which the heated toilet seat for washing with hot water during sterilization cannot be used is shortened, and a heated toilet seat for washing with warm water that is easy to use can be provided.

Also, by overshooting to the temperature T _1, a thermal shock higher than the sterilization set temperature T ₂ can be given between the times t _{2 and} t ₃ , so that efficient sterilization against mold and fungi can be achieved. It can be carried out. Therefore, a sanitary warm water washing heating toilet seat can be provided.

The setting temperature T ₂ at the time of sterilization is preferably before and after 55 ° C.. This is because, when seated immediately after the end of sterilization, that is, even when seated when the toilet seat surface temperature is 55 ° C., the toilet seat when seated when the surface temperature of the toilet seat 22 immediately after sterilization ends is 55 ° C. As can be seen from the graph obtained by measuring the surface temperature and the human skin temperature, the human skin temperature rises only from about 36 ° C to about 43 ° C. This is unpleasant, but it does not damage the human body.

Further, the temperature T ₁ is not a problem as long as it is within the heat-resistant temperature of the toilet seat components, but is preferably about 75 ° C. This is because the toilet seat surface is made of resin, so that the thermal conductivity is low, and if the toilet seat surface temperature is about 75 ° C., even if the human body comes into contact for a very short time, it will not cause a burn. . Here, the sterilization result when the toilet seat surface temperature is 55 ° C. is shown. 10 ⁴ CFU / ml order Escherichia coli and black mold were cultured at 25 ° C., and the number of bacteria (colony) was increased by heating at 55 ° C. for 3 minutes once a day while culturing at 25 ° C. When the change in the number) was compared, the number of bacteria could be suppressed from the order of 10 ⁴ CFU / ml to a level of 10 CFU / ml or less.

  Moreover, the place which disinfects is made into the seating part 30 which is the upper surface of a heating toilet seat. As a result, it is possible to disinfect the seating portion with which the human body comes into contact when sitting, and a hygienic heating toilet seat can be provided.

(Embodiment 2)
FIG. 8 is a cross-sectional view of a main part of the heating toilet seat equipped with the heating device according to Embodiment 2 of the present invention, and FIG. 9 is a perspective view of the radiant energy reflecting plate 31 of the heating toilet seat. In the present embodiment, the difference from FIGS. 1 to 4 shown in the first embodiment is that the radiant energy reflecting plate 31 is provided with a plurality of through holes 51. Further, the radiant energy absorbing layer 42 is provided not only on the toilet seat case 28 but also on the lower portion.

  About the warm water washing toilet seat comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. Since the radiant energy reflecting plate 31 is provided with the through hole 51 and the radiant energy absorbing layer 42 is provided not only on the upper part but also on the lower part of the toilet seat case 28, a part of the radiant energy from the lamp heater 32 by energization is radiated. The lower surface of the toilet seat case 28, that is, the lower portion of the toilet seat 22 facing the toilet bowl 20 is also heated by passing through the through hole 51 of the energy reflecting plate 31 and absorbed by the radiation energy absorbing layer 42.

  Therefore, when the sterilization switch 26 is pressed, not only the upper surface of the seating section 30 is sterilized as described in the first embodiment, but also the lower surface of the toilet seat 22 is sterilized by heating. It is possible to disinfect the lower surface of the toilet seat 22 contaminated by sewage splattered by local washing or the like, and a sanitary heating toilet seat can be provided.

  As described above, the heating device according to the present invention can suppress the growth of mold and bacteria in the seating section, and is safe even if a user accidentally touches or sits on the seating section during the sterilization operation. Applicable to toilet seats, chairs, etc.

1 is a schematic configuration diagram of a heating toilet seat equipped with a heating device according to Embodiment 1 of the present invention. The perspective view of the toilet apparatus provided with the heating toilet seat in Embodiment 1 of this invention The partially cutaway plan view of the heating toilet seat according to Embodiment 1 of the present invention Sectional drawing of the principal part of the case upper part of the heating toilet seat in Embodiment 1 of this invention Time chart showing toilet seat surface temperature during sterilization in Embodiment 1 of the present invention Time chart showing toilet seat surface temperature during sterilization for comparison with the time chart shown in FIG. Graph of human skin temperature when seated on toilet seat with 55 ° C. toilet seat surface temperature in Embodiment 1 of the present invention Sectional drawing of the principal part of the heating toilet seat which mounts the heating apparatus in Embodiment 2 of this invention. Perspective view of the radiant energy reflector of the heating toilet seat Cross section of a conventional heated toilet seat

Explanation of symbols

22 Toilet seat 30 Seating part 26 Sanitization switch 27 LED (notification means)
32 Lamp heater (radiant heating element)
42 Radiation energy absorption layer 44 Thermistor (temperature detection means)
50 Control unit

Claims (12)

A seating portion formed of a material that transmits radiation energy; a radiation-type heating element that radiates radiant energy; and an outer surface of the seating portion that absorbs the radiation energy, A heating apparatus comprising: a radiation energy absorbing layer for heating the outer surface of the seating portion; and a control unit for controlling energization of the radiation heating element so as to heat the seating portion at a temperature that does not damage a human body during sterilization. . The heating device according to claim 1, wherein the control unit is sterilization heating control of the seating portion, and the seating portion is held at the sterilization set temperature after reaching the temperature higher than the sterilization set temperature. 3. The heating device according to claim 1, wherein the control unit includes a temperature detection unit that detects a temperature of the seating portion heated by the radiation type heating element, and controls the radiation type heating element by a signal of the temperature detection unit. . The heating device according to any one of claims 1 to 3, wherein the radiant heating element is a lamp heater. The heating apparatus according to any one of claims 1 to 4, further comprising a sterilization switch that starts sterilization by being pushed. 6. The heating device according to claim 5, wherein the control unit is configured so that sterilization is not started even when the sterilization switch is pushed while the user is seated. The heating apparatus according to any one of claims 1 to 6, further comprising an informing unit for informing that sterilization is being performed. The heating device according to any one of claims 1 to 7, wherein the control unit is configured to continue the notification by the notification means for a predetermined time after the end of the sterilization. The heating apparatus according to any one of claims 1 to 8, wherein the place for sterilization is at least the upper surface of the seating portion. The heating device according to any one of claims 1 to 9, wherein the place for sterilization is other than the upper surface of the seating portion. The heating toilet seat which mounts the heating apparatus in any one of Claims 1-10 in a toilet seat. The toilet apparatus which provides the heating toilet seat of Claim 11 on a toilet bowl.

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