JP3952068B2 - Heating toilet seat and toilet device equipped with it - Google Patents

Description

  The present invention relates to a toilet seat having a heating function.

  In this type of conventional heated toilet seat, as shown in FIG. 9, a hollow portion 1 is formed inside, and a seat portion 3 of a ring-shaped toilet seat 2 used on a toilet bowl is made of a transparent polypropylene resin. The radiant heat from the lamp heater 4 provided along the entire ring shape of the toilet seat 2 is quickly transmitted to the seating section 3 to quickly raise the temperature of the warming surface on which the user is seated, while in series with the lamp heater 4 It was the structure which prevents the temperature rise of the toilet seat 2 with the connected thermostat 5 (for example, refer patent document 1).

  However, although the thermostat 5 is installed in the configuration of FIG. 9 to ensure safety against overheating, there is no detailed description of the thermostat 5, and in the case of a commonly used bimetallic thermostat, As shown in FIG. 10, since a slight gap d is formed between the heat-sensitive surface 6 and the bimetal 7 which are metal caps that receive the radiant heat of the lamp heater 4, heat transfer from the heat-sensitive surface 6 to the bimetal 7 is Since radiation from the heat-sensitive surface 6 and heat conduction via air take time, it takes time for the temperature of the bimetal 7 to rise, and it is conceivable that the safety aspect is jeopardized due to this response delay due to the detection delay of the overtemperature.

In other words, in this type of heated toilet seat, the lamp heater 4 has to quickly bring the toilet seat to an appropriate temperature in a short period of time until it is energized and seated immediately before the user sits on the toilet seat for power saving. A lamp heater in the form of a temperature rise must be used. Therefore, when the thermostat of the above-mentioned form is connected to such a lamp heater energization circuit and used as a means for preventing overheating, the response of the thermostat which is hardly a problem with an electric heater used in a normal heating appliance. Even with a delay, a heated toilet seat that uses a lamp heater that puts the buttocks directly and instantaneously rises in temperature quickly becomes overheated, giving the user discomfort and even exceeding discomfort. If the temperature rises, the user may have to get up from the toilet seat.
JP 2000-210230 A

  The problem to be solved by the present invention in view of the problems of the prior art is to provide a heated toilet seat that can quickly detect a temperature change of a radiant heating element and can be used safely and comfortably.

In order to solve the above-described problems, the present invention provides a seat, a toilet seat having a hollow portion therein, a radiation-type heating element provided in the cavity, a temperature detection means for detecting the temperature of the seat portion of the toilet seat, and a radiation type connected in series to the heating element, and comprising a thermostat having a bimetal to be heated Ri pressurized by the radiant light from the radiant heating elements, and a control unit for controlling the energization of the radiant heating elements by a signal of the temperature detection means A heating toilet seat , wherein the thermostat is a heating toilet seat provided with a cap that allows light to pass through so that the bimetal receives radiation light .

With this configuration, the heating toilet seat is heated by directly receiving the radiation light from the radiant heating element by the thermostat's bimetal, so the temperature change can be detected quickly and temperature control with no response delay is used to make the heating toilet seat safe and comfortable In addition, by providing a cap that allows light to pass through, it is possible to make the thermostat drip-proof or waterproof so that water droplets and dust do not enter the interior of the thermostat. Since electric insulation can be maintained, electric shock can be prevented.

The heating toilet seat of the present invention is a cap that allows the bimetal of the thermostat to be directly heated by the radiation light from the radiation-type heating element to quickly detect a temperature change, to quickly control the temperature change of the toilet seat, and to transmit light. It is possible to make the thermostat drip-proof or waterproof so that water droplets and dust do not enter the thermostat, and even if the cavity is submerged, it can prevent water from entering the current-carrying part of the thermostat and provide electrical insulation. Since it can be maintained, electric shock can be prevented.

The first invention is in series with a seat portion and a toilet seat having a hollow portion therein, a radiation type heating element provided in the cavity portion, temperature detecting means for detecting the temperature of the seat portion of the toilet seat, and a radiation type heating element. connected, and a thermostat having a bimetal to be heated by Ri addition to light radiated from the radiation heating elements, a heating toilet seat and a control unit for controlling the energization of the radiant heating elements by a signal of the temperature detection means The thermostat is a heating toilet seat provided with a cap that allows light to pass through so that the bimetal receives radiation light .

According to the first aspect of the invention, when the thermostat is heated by the radiant light from the radiant heating element, the temperature change of the toilet seat is quickly predicted, and when the abnormality occurs in the energization circuit of the radiant heating element, The energization circuit can be shut off before the temperature rises abnormally. Therefore, there is no need to keep the radiant heating element energized at all times, and the toilet seat does not need to be heated. For example, the seating portion of the toilet seat can be instantly taken for several seconds until the user enters the toilet and sits on the toilet seat. It is possible to use a radiation-type heating element that can raise the temperature of the battery to an appropriate temperature at a high speed, and a highly energy-saving heating toilet seat can be used safely. In addition, by providing a cap that allows light to pass, it is possible to make the thermostat drip-proof or waterproof so that water droplets and dust do not enter the inside of the thermostat, and even if the cavity is submerged, the thermostat can be immersed in the current-carrying part. Since electric insulation can be maintained and electric insulation can be maintained, electric shock can be prevented.

In the second invention, since the thermostat cap is made of transparent glass in the first invention, the thermostat can be made to be a drip-proof type or a waterproof type with high-speed response.

A third aspect of the invention is a toilet apparatus provided with a heated toilet seat according to the first or second aspect of the invention in a toilet, and a toilet apparatus that can be expected to have the effects of each of the inventions described above can be obtained and used comfortably. it can.

The object of the present invention can be achieved by using the first to third aspects of the present invention as the main part of the embodiment, so the details of the embodiment 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. Note that the present invention is not limited to the embodiments. Further, in the description of the present embodiment, the same reference numerals are given to the same configuration 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 according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of a toilet apparatus equipped with the heating toilet seat, and FIG. 3 is a toilet seat of the heating toilet seat FIG. 4 is an exploded perspective view of the heating toilet seat, and FIG. 5 is a cross-sectional view of the main part of the seating portion of the heating toilet seat.

  1 to 5, a heated toilet seat with a hot water washing function for washing an anus and a bidet after a stool has a horizontally long main body 21 attached to the rear end of the toilet 20 of the toilet device. A part of the warm water washing function is internally provided, and a ring-shaped toilet seat 22 and a toilet lid 23 mounted on the toilet 20 are rotatably provided. Further, a human body detection sensor 25 for detecting the presence or absence of a human body in the toilet room is incorporated in the sleeve portion of the main body 21. As shown in FIG. 1, the toilet seat 22 is formed by fixing an aluminum seating portion 24 to the upper portion of a synthetic resin lower frame body 26 with a sealing material, and prevents water droplets or the like from entering the inside. The structure has a drip-proof sealed cavity 27.

  Inside the hollow portion 27, a radiation reflecting plate 28 (reflector) having a mirror-finished aluminum plate facing the seating portion 24 of the toilet seat 22 on which a user who uses the toilet device sits, and both sides of the seating portion 24 Are provided with two lamp heaters 29 which are a plurality of radiation-type heating elements. As shown in FIG. 1, the radiant light reflection plate 28 has an upward bent portion 28a on the entire circumference of the inner and outer end portions thereof, and the radiated light from the lamp heater 29 is deflected by the bent portion 28a. Therefore, the radiant heat distribution to the seating portion 24 is made uniform by acting so as to increase the radiation density of the outer peripheral edge portion and the inner peripheral edge portion of the seating portion 24 away from the lamp heater 29. A thermostat 30 electrically connected in series with the lamp heater 29 is provided in the vicinity of the lamp heater 29, and acts to prevent an overtemperature of the seating portion 24 of the toilet seat 22 in the event of an unsafe situation. To do. The radiant light reflecting plate 28 is made of an aluminum plate to reduce the weight, but a stainless plate, a plated steel plate or the like may be used.

  The lamp heater 29 is configured by enclosing a small amount of halogen in a filament 33 made of tungsten and an inert gas 34 such as argon inside a glass tube 32, and forms tungsten halide as the filament 33 generates heat. By repeating the halogen cycle reaction, the filament 33 is prevented from being consumed. By this action, the filament 33 having a very small heat capacity can be used as a heat source, and the radiation energy can be caused to rise very steeply. That is, the lamp heater 29 instantaneously moves the seating portion 24 of the toilet seat 22 for a few seconds, for example, until the user enters the toilet room, lowers clothes, and seats the buttocks on the seating portion 24 of the toilet seat 22. It is a radiation-type heating element that can be heated up to an appropriate temperature at high speed. Note that the lamp heater 29 is not necessarily a halogen lamp heater depending on the required degree of characteristics.

  The lamp heater 29 is fixed to the radiant light reflecting plate 28 by a lamp heater fixture 36 formed of a leaf spring material, and the radiant light reflecting plate 28 is fixed to the boss 37 of the resin lower frame body 26 with screws. .

  FIG. 5 shows an enlarged cross section of a part of the aluminum seating portion 24 constituting the toilet seat 22. In FIG. 5, the cavity 27 side of the toilet seat 22, that is, the inner surface to which the radiation light of the lamp heater 29 is irradiated forms a black-coated radiation absorption layer 42 that easily absorbs the radiation light, and the outer side, that is, the seating side. Is formed with an alumite layer 41 having an anticorrosive effect and a surface decorative layer 43 coated thereon for a desired appearance effect. The alumite layer 41 and the painted surface decorative layer 43 do not necessarily have to be both, and only one of the alumite layer 41 or the painted surface decorative layer 43 has a significant anticorrosion effect such as chemical resistance and gloss. Design such as color and shade can be added. However, by having both the alumite layer 41 and the painted surface decorative layer 43, a higher anticorrosive effect and a sterilizing effect can be added by using, for example, a paint containing a sterilizing material. In addition, as a result of confirming various colors with respect to the color of the radiation absorbing layer 42, it was found that black has the highest endothermic efficiency and the heating rate of the seating portion 24 can be increased. It should be noted that the temperature can be raised even in gray, red, blue, etc. from the viewpoint of being practical without regard to the maximum speed. The black color is not necessarily limited to coating, and surface treatment such as dyeing may be used. In the case of aluminum, boehmite treatment is also practical. Further, the surface decorative layer 43 applied to the outer surface of the seating portion 24 in FIG. 5 can be dyed, but at least if the coating is applied to the surface of the seating portion, not only the anticorrosive effect but also a metal such as aluminum is used. Even if it is a toilet seat, it can wipe away the cold feeling it sees. For example, a soft image or a high-class image can be produced by pearl coating such as pearls.

  Because the seat 24 of the toilet seat 22 is made of a metal and aluminum press (drawing) product, the thermal conductivity is about 200 W · mK, which is an order of magnitude higher than the resin of about 0.1 to 1 W · mK. The radiation absorbing layer 42 is heated by receiving radiation from the lamp heater 29, and at the same time, heat can be quickly transferred to the outer surface of the seating portion 24, that is, the surface decorative layer 43. And since it is aluminum with high heat conductivity, the soaking | uniform-heating effect which makes temperature distribution more uniform is acquired. Further, the required strength can be ensured even if the plate thickness is reduced by work hardening by pressing (drawing) aluminum. For example, in the case of resin, a thickness of about 3 mm is required from the viewpoint of strength, but in the case of a drawn product of an aluminum plate, half of 1.5 mm or less is sufficient. As the thickness is reduced, the heat capacity can be reduced, so that the amount of heat and time required for temperature increase can be reduced. As a result of the experiment, it was concluded that the aluminum plate thickness is preferably 0.8 to 1.2 mm in terms of strength and heating time.

  The lower frame 26 constituting the toilet seat 22 is provided with a radiant light reflecting plate 28 on the inner surface thereof, and the radiant light reflecting plate 28 is provided with a lamp heater 29 and a thermostat 30 connected in series with the lamp heater 29. . An aluminum seat 24 is attached to the upper part of the lower frame body 26, and a thermistor 44, which is a toilet seat temperature detecting means, is attached to the inner surface of the seat 24 to detect the temperature of the aluminum seat 24. It has been. Further, 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 a standing state or is used by being seated. It can be detected whether the toilet 20 is in a substantially horizontal use position.

  The main body 21 takes in a detection signal of a room temperature thermistor 48 as a room temperature detection means to control the temperature of the lamp heater 29 and energizes the lamp heater 29 of the toilet seat 22 to start the temperature rise. There is provided a control unit 50 mainly composed of a microcomputer having a timer unit 49 for counting the number of times. The control unit 50 takes in signals from the human body detection sensor 25, the seating detection means 38, and the toilet seat position detection means 47 that detect a person entering the room, controls the start and stop of energization of the lamp heater 29, the thermistor 44, the room temperature. The temperature of the lamp heater 29 can be controlled so that the signal from the thermistor 48 is taken in so that the temperature of the seating portion 24 which is a warming surface becomes a predetermined temperature which is an appropriate temperature.

  In FIG. 6, the thermostat 30 has a configuration in which a bimetal 51 is exposed in the cavity 27 so as to receive radiation light from the lamp heater 29. Further, a heat-resistant black paint is applied to the light receiving surface of the bimetal 51 as the radiant heat absorbing material 52. The thermostat 30 is configured to efficiently absorb the heat radiated from the radiation-type heating element toward the bimetal 51 by the radiant heat absorber 52, and to raise the temperature of the bimetal more quickly. The thermostat 30 is set such that the distance a between the lamp heater 29 and the seating portion 24 of the toilet seat 22 is larger than the distance b between the lamp heater 29 and the bimetal 51. This distance a indicates the distance to the radiation absorbing layer 42 which is a light receiving surface provided on the inner surface of the seating portion 24 in the present embodiment.

  In the above embodiment, when the user enters the toilet, the human body detection sensor 25 detects the entry and the 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 29. By this initial energization, the input energy is instantaneously converted into radiant energy and radiated from the filament 33 through the glass tube 32 and the radiant light reflector 28 toward the seating portion 24 of the toilet seat 22. Further, the radiation energy of the lamp heater 29 raises the temperature of the radiation absorbing layer 42 and the seating portion 24 provided on the inner surface of the seating portion 24 of the toilet seat 22. As described above, in this embodiment, when the user enters the toilet, the lamp heater 29 is energized, the warming surface of the seating portion 24 of the toilet seat 22 can be heated almost instantaneously, and the control unit 50 Even in the unlikely event of an unsafe situation due to a failure or the like, the energization of the lamp heater 29 can be cut off by the fast-responsive thermostat 30 in which the bimetal 51 receives the radiated light of the lamp heater 29. Unlike a heating toilet seat that is always energized and kept warm and has a large heat dissipation loss, there is almost no heat dissipation loss, and an extremely energy-saving and safe heating toilet seat is realized. The hinge cover 55 shown in FIGS. 3 and 4 is formed integrally with the seating portion 24 in the case of a resin heated toilet seat (not shown) generally used conventionally. In the above embodiment, the seating portion 24 shown in FIGS. 3 and 4 is made of metal (aluminum material) and the hinge cover 55 is made of propylene resin. This is because, by minimizing the number of locations to be heated by the lamp heater 29 and reducing the heat capacity to be heated, the seating section 24 can be raised in temperature instantaneously with less power, In addition, power can be saved. In other words, the aluminum material of the seating portion 24 has a high thermal conductivity and conducts heat so that the temperature is uniform. However, since the hinge cover 55 is made of resin and has a low thermal conductivity, the heat of the seating portion 24 is transferred to the hinge cover 55. Is hardly taken away. In this way, by configuring the upper member of the toilet seat 22 with a plurality of members having different thermal conductivities, it is possible to prevent heat from being taken away excessively by a portion that does not need to be warmed, and heat loss can be reduced. . As described above, the seat 24, which is the upper constituent member of the toilet seat 22, the hinge cover 55, and the lower frame 26, the toilet seat 22 having the cavity 27 therein, and the radiation-type heating element provided in the cavity 27 29 and a reflector 28 provided on the lower frame 26 side so as to face the radiation-type heating element 29, and at least the seating portion 24 of the upper frame is made of metal (aluminum material), and the upper frame is seated. With the configuration in which the radiation absorbing layer 42 is provided on the inner surface of the part 24, an energy-saving instantaneous heating toilet seat that can instantaneously raise the temperature of the seating part 24 more quickly with less power can be realized.

  Further, the control unit 50 calculates from the temperature difference between them and the respective temperatures based on the signals of the thermistor 44 and the room temperature thermistor 48 at the start of energization, and the energization limit time for initial energization that is set and stored in advance. When the elapsed time counted by the timer unit 49 reaches the energization limit time, the energization amount is reduced or reduced to zero, and then the seating portion 24 of the toilet seat 22 is set to an appropriate temperature based on the signal from the thermistor 44. The energization amount is controlled so that

  Thereby, the thermistor 44 detects the temperature in the vicinity of the seating portion 24 that is actually touched by the user, and the control unit 50 accurately raises and maintains the temperature to an appropriate temperature, so that the use of the toilet seat 22 is comfortable. Since the amount of radiant energy input is controlled in accordance with the amount of load based on the signal from the room temperature thermistor 48, it can be heated to a suitable temperature with higher accuracy and safety.

  In addition, since the initial energization time control is prioritized, the energization amount is reduced and the temperature rise rate is reduced after the energization limit time, so even if the response speed of the toilet seat temperature detection means is slow, the toilet seat can be warmed safely. In addition, an inexpensive toilet seat temperature detecting means can be used. In general, many common heaters control the temperature by reducing the applied voltage, but the lamp heater 29 repeats a halogen cycle reaction for forming tungsten halide as the filament 33 generates heat, so that the filament 33 Therefore, when the temperature of the glass tube is 200 ° C. or lower, the halogen cycle becomes unstable. Therefore, in order for the lamp heater 29 to bring the seating portion 24 to an appropriate temperature, the energization cycle is changed within an output range where the halogen cycle is effective.

  On the other hand, when the toilet seat 22 is in a standing state or a male user stands the toilet seat 22 in a standing state for small use after entering the toilet room, the control unit 50 is based on a signal from the toilet seat position detecting means 47. Stops energizing the lamp heater 29. As a result, it is possible to reduce the wasteful heating of the toilet seat 22 and to further save energy, and in the energized state, the lifetime of the filament 33 in the length direction, which is the tension direction of the filament 33, is applied, resulting in a disconnection. Shortening can be prevented.

  Further, even if the user opens and closes the toilet seat 22 in an upright state and a substantially horizontal state according to the purpose, the impact of the lamp heater fixture 36 of the leaf spring material, which is an elastic material, is reduced, thereby reducing the glass tube or Filament breakage can be prevented.

  Next, when the user is seated for defecation, the energization amount to the lamp heater 29 is controlled by changing the energization amount to zero or the toilet seat temperature does not rise excessively according to the signal of the seating detection means 38. Thereby, the toilet seat temperature does not rise excessively during use, and it can be used safely without fear of causing burns or the like.

  In particular, since the heated toilet seat is seated with the skin in direct contact with the toilet seat with a built-in lamp heater, sufficient consideration must be given to safety. In the normal use state, it can be used safely and comfortably as described above. However, for some reason, a malfunction occurs in the control unit 50 such as a microcomputer (not shown), and the lamp heater 29 is continuously energized. It is necessary to operate safely in the event of a break.

  As shown in FIG. 10, a thermostat is usually used in which a bimetal 7 is enclosed in a metal cap 6 and blocks light. In this configuration, the cap 6 is first heated, and the bimetal is heated from the cap 6. Therefore, when the temperature of the toilet seat 22 changes in a short time, there may be a delay in circuit shut-off.

  However, in the present embodiment, in order to solve this problem, the thermostat 30 exposes the bimetal 51 and applies a heat-resistant black paint as a radiant heat absorber 52 on the surface of the bimetal 51. Therefore, since the bimetal 51 directly receives the radiant light from the lamp heater 29, the bimetal 51 is directly heated by the radiant light from the lamp heater 29, and in addition, the bimetal 51 has a heat resistant material as a radiant heat absorber 52 on the surface. Since the black paint is applied, most of the radiant heat reaching the bimetal 51 from the lamp heater 29 is absorbed by the bimetal 51 and quickly follows the rapid fluctuation of the temperature of the toilet seat 22, and the thermostat 30 is in series with the lamp heater 29. Since it is electrically connected, the power supply to the lamp heater 29 can be cut off when the temperature rises.

  Further, the thermostat 30 is set at a position where the distance a between the lamp heater 29 and the toilet seat 22 is larger than the distance b between the lamp heater 29 and the thermostat 30. As a result, the temperature of the bimetal 51 is raised earlier than the rise in the surface temperature of the toilet seat 22, so that the energization circuit of the lamp heater 29 is shut off before the toilet seat 22 surface temperature rises excessively and becomes dangerous such as a burn. You can do it safely.

  In the present embodiment, if the temperature of the bimetal 51 can be raised quickly, malfunction of the thermostat 30 can also be prevented. That is, if the temperature of the bimetal 51 can be raised quickly, the operating temperature of the thermostat 30 (opening the energization circuit of the lamp heater 29) can be set higher than the normal use temperature of the toilet seat 22, so that the normal use The danger that the thermostat 30 sometimes operates and the toilet seat heating function cannot be used can be avoided.

That is, FIG. 7 is a result of measuring the temperature near the bimetal 51 and the surface temperature of the seating portion 24 when the lamp heater 29 is energized with the distance b = 7 mm and the distance a = 15 mm in the thermostat 30 having the configuration shown in FIG. . In FIG. 7, curve (A) is the surface temperature of the seating portion 24. At room temperature of 5 ° C., the temperature can be raised to the normal toilet seat control temperature (T ₁ ) in about 7.5 seconds (t ₁ ). On the other hand, the temperature of the bimetal 51 of the thermostat 30 rises faster than the seating portion 24 to the toilet seat control temperature (T ₁ ) in t ₂ hours as shown by the curve (B). When the seating portion 24 becomes equal to or higher than the maximum set temperature (T ₂ ) of the toilet seat 22, the temperature of the bimetal 51 reaches the off (opening) operating temperature (T ₃ ) of the thermostat 29 and interrupts the energization circuit of the lamp heater 29.

In the unlikely event that a malfunction occurs in the thermostat 30 and the energization circuit of the lamp heater 29 cannot be shut off, the non-returnable thermostat 31 (or temperature fuse) is reached before the safety limit temperature (T ₄ ) is reached. Is activated to cut off the energization circuit of the lamp heater 29. At this time, the surface temperature of the toilet seat 22 does not reach the safety limit temperature (T ₄ ).

Further, by setting the operating temperature (T ₃ ) of the thermostat 30 to be not less than the maximum set temperature (T ₂ ) of the toilet seat 22 and not more than the safety limit temperature (T ₄ ), the non-returnable thermostat 31 (or temperature fuse) can be easily provided. As a result, the energization circuit of the lamp heater 29 is interrupted, and the danger that the heating function of the toilet seat 22 cannot be used is eliminated. That is, the first stage of the initial energization time is temperature control by the timer 49 and the thermistor 44 of the control unit 50, and the second stage is shut off of the energization circuit of the lamp heater 29 by turning off the thermostat 30 (however, the circuit is restored due to the temperature drop). In the third stage, the energization circuit of the lamp heater 29 is shut off by the non-returnable thermostat 31 (or temperature fuse) (the circuit cannot be restored), and a multi-stage safety function is set for long-term safety and comfort. Can be used for

  Further, in the present embodiment, as shown in FIG. 3, a plurality of front lamp heaters 29 and rear lamp heaters 29b are arranged in front of and behind the toilet seat 22 and face each of the lamp heaters 29 and 29b. Thermostats 30 and 30b are provided, and each thermostat 30 and 30b is electrically connected in series. The return-type thermostats 30 and 30b are cut off at a slightly lower temperature, and the non-return-type thermostats 31 and 31b are cut off at a higher temperature than the return-type thermostats 30 and 30b. High multiple safety and long-term safe and comfortable use.

  That is, the thermostats 30 and 30b are connected in series to the lamp heaters 29 and 29b, and further connected in series to form an energization circuit for the lamp heaters 29 and 29b, so that either of the lamp heaters 29 and 29b is connected. When an abnormality occurs, the energization circuit of the lamp heaters 29 and 29b is shut off by the thermostats 30 and 30b, so that energization to both the lamp heaters 29 and 29b is safely stopped. Since the thermostats 30 and 30b have different off-operation temperatures, even if one of the thermostats 30 has a problem and the energization circuit of the lamp heaters 29 and 29b cannot be cut off, Since one thermostat 30b cuts off the energization circuit of the lamp heaters 29 and 29b, it is safe. Further, since the lamp heaters 29 and 29b are divided into a plurality of pieces, in the conventional ring-shaped toilet seat 2 shown in FIG. 9, one ring-shaped lamp heater 4 is arranged in substantially the entire cavity 1 of the toilet seat 2. Thus, the problem that the lamp heater 4 is directly stressed due to the deflection of the toilet seat 2 and the installation error of the lamp heater 4 is solved, and the risk of the lamp heater 29 being damaged due to the deflection of the toilet seat 22 or the like can be eliminated.

(Embodiment 2)
FIG. 8 is a cross-sectional view of a main part of the heating toilet seat according to the second embodiment of the present invention, and particularly shows a partial cross-sectional view of the thermostat. The basic configuration of the present embodiment is the same as that of the first embodiment, except that the structure of the thermostat connected in series to the lamp heater is improved. Therefore, only the structure of the different thermostat will be described. .

  In FIG. 8, the thermostat 30 c has a cap 53 made of transparent glass so that the bimetal 51 receives the radiation from the lamp heater 29. The provision of the transparent glass cap 53 makes it possible to provide a drip-proof or waterproof type in which water droplets and dust do not enter the thermostat 30c, and even if the cavity 27 is submerged, the energizing portion of the thermostat 30c. Inundation of water can be prevented and electrical insulation can be maintained, so that electric shock can be prevented. Further, in the thermostat 30c, a heat-resistant black paint is applied as a radiant heat absorbing material 52 to the light receiving surface of the bimetal 51 as in FIG. The thermostat 30 is configured to efficiently absorb the heat radiated from the radiation-type heating element toward the bimetal 51 by the radiant heat absorber 52, and to raise the temperature of the bimetal more quickly. The thermostat 30c is set such that the distance a between the lamp heater 29 and the surface of the toilet seat 22 is larger than the distance b between the lamp heater 29 and the bimetal 51. Therefore, since the bimetal 51 directly receives the radiant light from the lamp heater 29, the bimetal 51 is directly heated by the radiant light from the lamp heater 29, and in addition, the bimetal 51 has a heat resistant material as a radiant heat absorber 52 on the surface. Since the black paint is applied, most of the radiant heat reaching the bimetal 51 from the lamp heater 29 is absorbed by the bimetal 51 and quickly follows the rapid fluctuation of the temperature of the toilet seat 22, and the thermostat 30 is in series with the lamp heater 29. Since it is electrically connected, the power supply to the lamp heater 29 can be cut off when the temperature rises.

  In addition, the transparent glass of the cap 53 is excellent in the transmission characteristic of the radiant light of the lamp heater 29 by using quartz glass, can be made to respond more rapidly, and can improve the safety | security of interruption | blocking. Of course, other glasses can be used practically depending on the degree of necessity. Further, if the plate pressure of the transparent glass 53 is too thick, the transmission performance is deteriorated. In each of the above embodiments, the material of the seating portion is a pressed product of an aluminum plate, but the same effect can be obtained even by other processing methods such as aluminum die casting. The type of metal may also be a copper plate or a steel plate.

  As described above, in the heating toilet seat of the present invention, the bimetal of the thermostat is heated by the radiant light from the radiant heating element, and a temperature change can be detected quickly, and a heating toilet seat that can be used safely is obtained. It can be applied as a heating technology for the equipment to be used.

Schematic configuration diagram showing a cross section of the main part of the toilet seat of the heating toilet seat according to Embodiment 1 of the present invention. The perspective view of the toilet apparatus which mounted the heating toilet seat in the same Embodiment 1 in the toilet bowl The top view which removed the seating part of the heating toilet seat in Embodiment 1 The principal part disassembled perspective view of the heating toilet seat in Embodiment 1 Sectional view of the seating portion of the heating toilet seat in the first embodiment Sectional drawing of the principal part of the heating toilet seat in Embodiment 2 Characteristic chart of temperature control of heating toilet seat in the first embodiment Sectional drawing of the principal part of the heating toilet seat in Embodiment 2 Sectional view of the main part of a conventional heated toilet seat Cross section of a conventional heated toilet seat thermostat

Explanation of symbols

22 Toilet seat 24 Seating section 27 Cavity section 29 Lamp heater (radiant heating element)
30 thermostat 41 anodized layer 42 radiation absorbing layer 43 surface decorative layer 44 thermistor (temperature detection means)
48 Room temperature thermistor (room temperature detection means)
50 Control Unit 51 Bimetal 52 Radiant Heat Absorbing Material a Distance between Radiant Heating Element and Toilet Seat Surface b Distance between Radiant Heating Element and Thermostat T ₂ Maximum Set Temperature for Toilet Seat T ₄ Safety Limit Temperature for Toilet Seat

Claims (3)

A toilet seat having a hollow portion inside the seat portion, a radiation-type heating element provided in the cavity portion, temperature detecting means for detecting the temperature of the seat portion of the toilet seat, and the radiation-type heating element are connected in series, and a thermostat having a bimetal to be heated Ri pressurized by the radiant light from the radiant heating elements, a heating toilet seat and a control unit for controlling the radiation heating elements energized by a signal of the temperature sensing means The thermostat is a heating toilet seat provided with a cap that allows light to pass through so that the bimetal receives radiation light . The cap is heated toilet seat according to claim 1, wherein the transparent glass. A toilet device provided with a heating toilet seat according to claim 1 or 2 in a toilet.