JP4830790B2 - Heated toilet seat and sanitary washing device equipped with the same - Google Patents

Description

  The present invention relates to a heating element for heating a toilet seat of a heating toilet seat.

  In this type of conventional heated toilet seat, a plurality of straight-tube radiant heating elements are arranged in the cavity of the toilet seat, a lower reflector is installed below the radiant heating element, and positioned above the radiant heating element. An upper reflector having a plurality of openings with different opening areas is installed on the lower surface of the seating surface, and temperature unevenness of the seating surface is suppressed by changing the area and arrangement of the openings (for example, Patent Documents) 1).

FIG. 11 shows a sectional view of a conventional heated toilet seat described in Patent Document 1, FIG. 12 shows a plan view inside the toilet seat, and FIG. 13 shows a plan view of the upper reflector. As shown in the drawing, two straight tubular radiant heating elements 3 are disposed in the cavity 2 of the toilet seat 1, and a lower reflector 4 is disposed below the radiant heating element 3. An upper reflecting plate 6 is installed on the lower surface of the seating surface 5 of the toilet seat 1, and a plurality of openings 7 having different opening areas are installed on the upper reflecting plate 6 as shown in FIG.
JP 2006-204371 A

However, in the above-described conventional configuration, the upper reflector is installed in order to uniformly heat the entire seating surface with a straight tubular radiant type heating element that covers only a part of the toilet seat, and the radiant type heat is generated by the upper reflector. since heat energy emitted from the body is made uniform dispersed throughout the seating surface, takes a long time to raise the temperature of the seating surface, it is impossible to raise the temperature of the seat surface in a short time a comfortable temperature.

  In addition, the toilet seat has a built-in metal upper reflector, which increases the weight of the toilet seat, which increases the burden on the toilet seat opening and closing mechanism that is required when the toilet seat is opened and closed, leading to an increase in size and complexity of the opening and closing mechanism. It had the problem that.

  The present invention solves the above-described conventional problems, and raises the toilet seat to a comfortable temperature in a short time, and reduces the weight and simplification of the radiation-type heating element, thereby reducing the weight and simplicity of the toilet seat device. It is to provide.

In order to solve the conventional problems, and the toilet seat having a cavity therein and composed of an upper frame and lower frame having a frame-shaped seat, the one for heating the seat in the cavity comprising a radiant heating elements, said radiation type heat generating body, the both end portions by polymerizing with each other in the longitudinal direction of the toilet seat is molded into a substantially annular, said over along a substantially central portion of the seating section all around the ring The both ends of the radiation-type heating element are arranged near the center of the rear part of the seating part .

As a result, the structure becomes simple and lightweight, and the seat seating surface of the toilet seat can be efficiently heated in a short time with the radiation energy radiated from the radiation-type heating element without imposing a burden on the toilet seat opening / closing mechanism.
In addition, both ends that are non-heat generating parts are configured to form an electrical connection part for power feeding, and radiation energy is radiated to the entire seating part without interruption from almost the entire circumference of the annular radiation heating element. A desired temperature distribution can be obtained in almost the entire range of the bent seat.
In addition, by disposing both ends where the radiation amount of radiant energy is small in the vicinity of the center of the rear part of the seating part, the user is less likely to feel uncomfortable and the cavity space at the rear part of the seating part is relatively smaller than other parts. Since a wide space can be secured, it is easy to form a connection structure for supplying power to the radiation-type heating element.

  The heated toilet seat of the present invention can raise the temperature of the toilet seat with radiant energy in an extremely short time, and can provide a toilet seat with a high energy-saving effect with a lightweight and simple configuration.

1st invention consists of the upper frame body which has a frame-shaped seating part, and a lower frame body, the toilet seat which has a cavity part inside, and one radiation type heating element which heats the said seating part in the said cavity part The radiant heating element is formed in a substantially annular shape by polymerizing both ends thereof in the front-rear direction of the toilet seat, and is wrapped around the entire circumference along the substantially central portion of the seat portion , Since both ends of the radiant heating element are arranged near the center of the rear part of the seating part, the radiation energy radiated from the radiant heating element instantaneously reaches almost the entire seating part or is absorbed by the back surface of the seating part. The energy is immediately converted into heat, and the entire surface of the seat can be heated uniformly, and the entire surface of the seat can be heated in a very short time. It is possible to stop energizing the With an Energy, since the entire seat can be heated without temperature variations, it can be comfortably used. In addition, by configuring the radiation type heating element with one, the configuration in the cavity is simplified and the weight of the toilet seat can be reduced.

  In addition, both ends that are non-heat generating parts are configured to form an electrical connection part for power feeding, and radiation energy is radiated to the entire seating part without interruption from almost the entire circumference of the annular radiation heating element. A desired temperature distribution can be obtained in almost the entire range of the bent seating portion, which is comfortable.

  In addition, the radiation heating element will be polymerized at the part corresponding to the tailbone part of the seated user, the user's tailbone part has a low temperature sensation, and the degree of adhesion to the seating part is low and the temperature of the seating part is compared. Therefore, even if both ends having a small amount of radiation energy are arranged in this portion, the user is less likely to feel uncomfortable. In addition, since a relatively wider space can be secured than other portions of the hollow space at the rear of the seating portion, a connection structure for supplying power to the radiation-type heating element can be easily formed.

According to a second aspect of the invention, in particular, in the first aspect of the invention, the radiant heating element is a lamp heater in which a spiral filament is enclosed in a heat transmission tube together with an inert gas, and the filament connects two filaments at a substantially central portion. With this configuration, the filament can be manufactured with a general-purpose coil processing facility in the spiral processing of the filament, and the winding diameter and pitch dimension of the filament can be stably produced. Furthermore, since the filaments of the radiant heating elements are connected at the center so that the lengths are the same, the connection part where the amount of radiation energy is small is located in the center of the front part of the seating part. It is a place where the knees are open and the human body is not directly in close contact with the place where heating is not necessary, and the user does not feel uncomfortable.

In the third aspect of the invention, in particular, in the second aspect of the invention, it is possible to change the radiation amount of the radiant energy of the radiant heating element depending on the location by providing the coarse portion and the dense portion on the spiral winding pitch of the filament. Depending on the distance from the radiant heating element to the seating surface, and the user's skin sensation and adhesion level, the seating area can be made to have an appropriate temperature distribution simply by changing the winding pitch, allowing efficient heating. it can.

In the fourth invention, particularly in the second or third invention, the shape of the heat transmission tube is formed by combining a curved portion and a straight portion to form an annular shape. In general, the straight pipe material is softened by heating and bent. Further, the seat portion of the toilet seat has a substantially elliptical shape in which a plurality of curves are continuously combined. In order to form a heat-transmitting tube having a shape substantially along the central portion of the toilet seat, by approximating the main points of the curve with a straight line and forming a substantially annular shape, in the processing of the heat-transmitting tube, the range of the bending process Since the front and rear materials are straight lines in contact with the arc, it is possible to form by heating and bending a plurality of important points without being bent as a whole. In the general toilet seat shape, if the total of 5 points are bent at the tip and 2 sides on both the left and right sides, it can be approximated to the center line of the substantially elliptical seating part, and there is no hindrance to the radiant heat spreading throughout the seating part. . Further, in the holding of the radiant heating element, the linear portion is held and the arrangement is stable, and a simple shape holder can be used and the productivity is good.

According to a fifth aspect of the present invention, in particular, in any one of the first to fourth aspects, at least the terminal portions to be sealed at both ends of the radiant heating element are linear, so that both ends of the radiant heating element are In order to hermetically seal the terminal portion constituting the power feeding portion, jigs and the like interfere with each other in a state in which both ends are close to each other, making it difficult to process. In order to prevent interference, it is necessary to secure a space at both ends, but in that state, there are restrictions on the dimensions of the cavity of the toilet seat, which further causes temperature unevenness. By performing another bending process in the post-process after sealing and sealing the heat-transmitting tube with both ends of the sealing part linear, the sealing process is easy with a sufficient space in the sealing part. Since the sealing portions can be arranged close to each other, the terminal portion can be polymerized in a limited space of the cavity portion of the toilet seat, and the seat surface can be heated uniformly.

In the sixth aspect of the invention, the seating portion is quickly warmed by using the hot water washing apparatus and the sanitary washing apparatus provided with the heated toilet seat according to any one of the first to fifth aspects, thereby greatly reducing power consumption. Thus, a sanitary washing device that can be used comfortably for a long time can be obtained.

  The following description will be made with reference to the drawings to describe the best mode for carrying out the present invention. 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 configurations and the effects and the same description is not repeated.

(Embodiment 1)
1 is a perspective view of a sanitary washing device equipped with the heating toilet seat according to Embodiment 1 of the present invention, FIG. 2 is a schematic view showing the configuration of the heating toilet seat, and FIG. 3 shows a seating portion of the 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 a main part of a seating portion of the heating toilet seat.

  As shown in the figure, the sanitary washing device of the present embodiment includes a horizontally long main body 21 attached to the rear end portion of the upper surface of the toilet 20, and a frame-shaped toilet seat 22 provided rotatably at the front portion of the main body 21. The main body 21 is composed of a hot water washing device 55 provided on the main body 21 in a heating toilet seat having a toilet lid 23 covering the toilet bowl 20 and the toilet seat 21 as a main constituent member. In addition, the main body 21 is provided with a control unit 49 for controlling the functions of the heated toilet seat and the hot water washing device, and the wall surface of the toilet room is operated with a human body detection sensor 26 for detecting the presence of a human body and a sanitary washing device. A remote controller 56 is provided.

  As shown in FIGS. 1 and 4, the toilet seat 22 includes a synthetic resin lower frame body 27, an upper frame body 24 formed of a seat portion 25 made of aluminum and a synthetic resin hinge cover 53 via a sealing material. By connecting them together to form an outline, the inside has a structure that has a substantially sealed cavity 28 that is drip-proof sealed and can prevent the ingress of water droplets and the like.

  The seat portion 25 of the toilet seat 22 is formed by forming a plate-like aluminum having a thickness of about 1 mm into a substantially elliptical frame shape as shown in FIG. 4 by press drawing, and both surfaces thereof are subjected to a surface treatment. As shown in FIG. 7, the cross-sectional shape of the seating portion 25 is substantially U-shaped with the upper and lower sides hanging down, and the end of the side wall depending on the left and right is provided with a flange portion 25a bent inward. The lower frame body 27 is joined.

FIG. 5 is a cross-sectional view showing the surface treatment state of the seating portion 25. On the inner surface of the seating portion 25, that is, the surface to which the radiation energy of the lamp heater 30 is irradiated, a black-coated radiation absorbing layer 40 that easily absorbs the radiation energy is formed. As for the color of the radiation absorbing layer 40, as a result of checking various colors, it was found that black has the best heat absorption efficiency for absorbing the radiation energy, and the heating rate of the seating portion 25 can be increased. Note that the temperature can be raised even in gray, red, blue, etc. from the viewpoint of a level that can be practically used regardless of the maximum speed. Further, the black color is not necessarily limited to coating, and may be a surface treatment such as dyeing.

  On the outer side of the seating portion 25, that is, the seating surface, an alumite layer 39 having an anticorrosive effect and a surface decorative layer 41 which is a surface layer coated for a desired appearance effect are formed thereon. The surface decorative layer 41 is made of a paint containing silicon or fluorine, and in this way, even if written with oil-based magic, there is an effect that ink is repelled and the surface is not easily soiled. The seating part 25 is hygienic and resistant to dirt, such as dirt, and can be easily cleaned even if the seating part 25 becomes dirty due to stool splashing during use. The user's skin feeling is good and comfortable without stickiness.

  In addition, the surface decorative layer 41 applied to the outer surface of the seating portion 25 in FIG. 5 can be colored so that it can wipe away not only the anticorrosive effect but also the cold appearance of a metal toilet seat such as aluminum. By using pearl-like pearl coating, etc., it is possible to produce a soft image or a high-quality image, and the design is improved. In addition, by including a material having high thermal conductivity such as aluminum in the paint pigment, the heat conduction on the painted surface can be improved, and the seating portion 25 can be heated uniformly.

  The alumite layer 39 and the surface decorative layer 41 do not necessarily have to be both, and only one of the alumite layer 39 or the painted surface decorative layer 41 has a considerable anticorrosion effect such as chemical resistance, and gloss and hue. Etc. can be added. However, by having both the alumite layer 39 and the painted surface decorative layer 41, a higher anticorrosive effect and a sterilizing effect can be added by using, for example, a paint containing a sterilizing material.

  In addition, by using a plate-like aluminum press-drawn product for the seating portion 25, the thermal conductivity is about 200 W · mK, which is orders of magnitude higher than the resin of about 0.1 to 1 W · mK. At the same time that the radiation absorbing layer 40 is heated by receiving the radiation energy of the lamp heater 30, heat can be quickly transferred to the outer surface of the seating portion 25, that is, the surface decorative layer 41. 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 the work hardening of the material itself generated by drawing the plate-like 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.

  Note that the seating portion 24 is not limited to aluminum, and iron, stainless steel, lightweight metal such as magnesium can be used. From the viewpoint of heating the seating portion 25 uniformly, aluminum having high thermal conductivity is used. Is preferred.

A thermistor 43 serving as a toilet seat temperature detecting means is attached to the inner surface of the seating portion 25 in order to detect the temperature of the seating portion 25. The thermistor 43 is attached by contacting the heat sensitive part of the thermistor 43 to the lower surface of the seating part 25 and pressing and fixing it with adhesive aluminum tape. By using the aluminum tape, the radiant energy from the lamp heater 30 does not directly hit the thermistor 43, and the thermistor 43 can accurately detect the temperature of the seating portion 25.

  Further, in consideration of safety against electric leakage in the event that the seat portion 25 is made of metal, a ground connection portion is provided on the flange portion 25a of the seat portion 25 as shown in FIG. By providing the ground connection portion on the flange portion 25a joined to the lower frame body 27 of the toilet seat 22, the ground wire 61 can be easily connected with the screw 62 without impairing the appearance. Similarly to the power supply wiring to the lamp heater 30, the ground wire 61 can be once pulled into the main body 21 from the toilet seat 22 and connected together with the ground of the main body charging portion, so that the ground wire 61 can be directly connected to the outside from the toilet seat 22. And will not get in the way.

  As shown in FIG. 4, a separate hinge cover 53 is disposed at the rear portion of the upper frame 24 of the toilet seat 22. In the case of a resin heating toilet seat that is generally used conventionally, it is formed integrally with the seating portion 25. However, in this embodiment, the seating portion 25 shown in FIG. Is molded from polypropylene resin. By adopting the above configuration, the number of locations to be heated by the lamp heater 30 is minimized, and by reducing the heat capacity to be heated, the temperature of the seating portion 25 can be instantaneously increased more quickly with less power. It becomes possible to further save power. That is, since the aluminum of the seating portion 25 has a high thermal conductivity, the received thermal energy is thermally conducted to the periphery and acts so that the temperature in the wide range of the seating portion 25 becomes uniform. On the other hand, since the hinge cover 53 is made of resin and has low thermal conductivity, the thermal energy of the seating portion 25 is hardly taken away by the hinge cover 54.

  By configuring the upper frame 24 of the toilet seat 22 with a plurality of members having different thermal conductivities in this way, it is possible to suppress heat from being taken away excessively by parts that do not need to be warmed, and to reduce heat loss. it can. The hinge cover 53 is attached to the resinous lower frame 27 at a position where it partially overlaps with the seating portion 25, and a fastening member 69 such as a screw is provided in the internal space without further damaging the appearance. By sandwiching with the upper frame body 24, even if the hinge cover 53 is formed of a separate member, the hinge portion coupled to the product main body can be made stronger.

  The resin lower frame 27 constituting the toilet seat 22 is provided with a radiation reflecting plate 29 on the inner surface thereof, and a lamp heater 30 is provided at a substantially central portion of the upper surface of the radiation reflecting plate 29. A reset thermostat 31 and a non-reset thermostat 32 connected in series to the lamp heater 30 are attached in the vicinity of the lamp heater 30 so as to prevent an excessive temperature rise of the seat 25 of the toilet seat 22 in the event of an unsafe situation. Works.

The radiation reflector 29 is attached to the lower frame 27 at the two rear left and right places, as shown in FIG. 7 (b), provided with fixed bosses 27a with hooks to prevent the radiation reflector 29 from being attached. By pressing against the fixing boss 27a from above, it can be fixed with one touch without using a fixing part such as a screw. On the other hand, is fixed in front of the screwing bosses 27b for screwing in the left and right is provided with right and left two places, Flip 65 through the mounting holes of the radiation plate 29 of the lower frame 27.

  The radiation reflecting plate 29 is substantially similar to the seating portion 25 and is provided substantially in parallel with the lower frame body 27. The inner and outer peripheral ends thereof have a bent portion 29a bent upward substantially over the entire circumference. is doing. The lamp heater 30 is disposed at a position substantially in the center of the radiation reflecting plate 29 with an appropriate space from the radiation reflecting plate 29. Since the radiation energy radiated from the lamp heater 30 in the lateral direction is deflected upward by the bent portion 29 a of the radiation reflector 29, the radiation density of the outer peripheral edge portion and the inner peripheral edge portion of the seating portion 25 away from the lamp heater 30 is reduced. The radiant heat distribution to the seat portion 25 is made uniform. The angle of the bent portion 29a is preferably 30 ° to 60 °. When the angle is 30 ° or less, the temperature of the peripheral portion is higher than the section of the toilet seat 22, and when the angle is 60 ° or more, the temperature near the center is high. Show the trend.

  Note that the radiation reflecting plate 29 is made of aluminum in a plate shape in order to reduce the weight, but a stainless plate, a plated steel plate, or the like may be used. Note that the bent configuration of the bent portion 29a may be configured so that heat can be collected in the seat portion as appropriate according to the shape of the toilet seat.

  A single lamp heater 30, which is a radiant heating element, is mounted around the entire circumference of the upper portion of the radiation reflecting plate 29 along the substantially central portion of the seating portion 25. The lamp heater 30 is fixed to the radiation reflecting plate 29 by fixing the front and rear portions of the lamp heater 30 with a front fixture 36 and a rear fixture 66 formed of spring wire, and a side portion of the lamp heater 30 with a return thermostat 31. Alternatively, the non-returnable thermostat 32 is fixed by a fixture 63 formed of a leaf spring material shared with the attachment.

Fixture 36 prior to use in fixation of the front curved portion of the glass tube 33 of the lamp heater 30, the city of substantially U-shaped having a smaller opening than the diameter of the glass tube 33 as shown in FIG. 7, one end The glass tube 33 is prevented from opening and the glass tube 33 is not detached by fixing the other portion to the reflecting plate 29 with a screw 65 and inserting the other end into a hole provided in the reflecting plate. Without damaging the wire 33, it is possible to hold the radiation heating element with a wire and an inexpensive and simple configuration.

  On the other hand, the rear fixture 66 that fixes both rear ends of the lamp heater 30 is formed by bending a spring wire like the front fixture 36, and sandwiches both ends of the lamp heaters 30 arranged in the front-rear direction. An upper clamping portion is provided at the front and rear, and both end portions of the lamp heater 30 are pressed individually from above to sandwich each end portion individually.

  Further, both side portions of the lamp heater 30 are held by a fixing metal fitting 63 formed of a leaf spring material. The fixing bracket 63 has a heater holding portion for holding the lamp heater 30 at the tip portion, and has a thermostat mounting portion for fixing the thermostat at the original portion.

  The heater holding portion for holding the lamp heater 30 is formed outside the bimetal so as not to block the radiation to the bimetal of the resettable thermostat 31 and the non-resettable thermostat 32. The heater holding part is composed of a pair of opposing clamping pieces, and the outer peripheral surface of the glass tube 33 is clamped by a circular arc part on the free end side, so that it can be easily mounted on the lamp heater 30 and, in addition, the free end thereof. The portion locks the clip 64 formed of a spring wire to prevent the spread, and the lamp heater 30 can be prevented from being detached even when an impact is applied when the toilet seat is raised and lowered.

  With the above configuration of holding the lamp heater 30, even if an impact is applied to the toilet seat 22 when the user turns the toilet seat 22 in the upright state and the substantially horizontal state according to the purpose of use, Since the plate-like aluminum radiation reflecting plate 29, the front fixture 36 and the rear fixture 66 made of spring wire material, and the plate spring material fixture 63 made of an elastic material alleviate the impact, the lamp heater 30 Breakage of the glass tube 33 and the filament 34 can be prevented.

On the other hand, as shown in FIG. 6 , the resettable thermostat 31 is disposed so as to face the lamp heater 30 in the cavity 28 so that the bimetal receives the radiant energy of the lamp heater 30. Further, a heat-resistant black paint is applied to the light receiving surface of the bimetal as a radiation absorbing material. The reset thermostat 31 is configured to efficiently absorb the radiation energy radiated from the radiation-type heating element toward the bimetal by the radiation absorber and to raise the temperature of the bimetal more quickly.

The return thermostat 31 is set so that the distance between the lamp heater 30 and the seating portion 25 is larger than the distance between the lamp heater 30 and the bimetal. This distance indicates the distance to the radiation absorbing layer 40 that is a light receiving surface provided on the inner surface of the seating portion 25. As described above, since the distance between the thermostat and the radiant heating element is important for safety, high dimensional accuracy is required. For this reason, the mounting portion of the return thermostat 31 and the non-reset thermostat 32 and the holding portion of the lamp heater 30 are fixed by a single fixture 63, so the distance between the radiation heating element 30, the return thermostat 31 and the non-reset thermostat is accurate. Since it can be kept constant well, abnormal heating can be detected accurately, and position regulation with respect to the reflector 29 can be realized with a simple configuration.

  In addition, the wiring of the lead wire which connects the lamp heater 30 and the control part 49 built in the main body 21 is a radiation reflecting plate from the hole provided in the radiation reflecting plate 29 and the notch part of the return-type thermostat 31 and the non-return-type thermostat 32 vicinity. Since the back surface of 29 is wired, the reflection of the lead wire is not obstructed and the lead wire is not easily exposed to radiant heat. Therefore, the lead wire to be used does not have to have a heat resistant coating that requires high heat resistance.

  On the lower surface of the lower frame body 27, four legs that are in contact with the upper surface of the toilet 20 with the toilet seat 22 in an inverted state are installed. The legs are made of a soft resin material and absorb the impact caused by the rotation of the toilet seat 22. The legs are fixed by inserting the protrusions of the legs into two fixing holes provided in the lower frame 27.

  The fixing holes of the lower frame body 27 are provided at intervals, and a lower frame inspection hole is provided at the center thereof. A reflector inspection hole is provided at a position corresponding to the lower frame inspection hole of the radiation reflector 29 installed on the upper portion of the lower frame body 27, and a lamp heater 30 is disposed above the reflector inspection hole. . With the above configuration, the lamp heater 30 can be visually inspected from the outside of the toilet seat through the lower frame inspection hole and the reflector inspection hole. In addition, the lower frame inspection hole is concealed by attaching a leg, and can prevent entry of dust and water.

  A thermostat having a structure in which a bimetal is included in a metal cap is usually used. In this configuration, the cap is first heated, and the bimetal is heated by radiation from the cap. Therefore, it takes time for the bimetal to reach a predetermined temperature, so in the case where the temperature of the toilet seat 22 changes in a short time. There was a case where there was a delay in circuit interruption.

  However, in the present embodiment, in order to solve this problem, the resettable thermostat 31 and the non-resettable thermostat 32 expose the bimetal, and apply a heat-resistant black paint as a radiation absorber on the surface of the bimetal. Therefore, since the bimetal directly receives the radiation energy of the lamp heater 30, in addition to the bimetal being directly heated by the radiation energy from the lamp heater 30, a heat resistant black paint is applied to the bimetal surface as a radiation absorber. Therefore, most of the radiant heat reaching the bimetal from the lamp heater 30 is absorbed by the bimetal and quickly follows the rapid fluctuation of the temperature of the toilet seat 22, so that the resettable thermostat 31 and the non-resettable thermostat 32 are connected to the lamp heater 30. Since the electrical connection is made in series, the energization of the lamp heater 30 can be cut off when the temperature is excessive. The return thermostat 31 and the non-reset thermostat 32 have the cap 52 made of transparent glass so that the bimetal receives the radiation energy of the lamp heater 30. The provision of the transparent glass cap 52 makes it possible to provide a drip-proof or waterproof type in which water droplets and dust do not enter the inside of the resettable thermostat 31 and the non-resettable thermostat 32. Even in this case, it is possible to prevent water from flowing into the energizing portions of the resettable thermostat 31 and the non-resettable thermostat 32 and maintain electrical insulation, thereby preventing electric shock.

In addition, the transparent glass of the cap 52 is excellent in the transmission characteristic of the radiant energy of the lamp heater 30 by using quartz glass, and can make a higher-speed response, and can improve 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. Therefore, the plate thickness is preferably 1.5 mm or less, and preferably 1.2 mm or less. 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.

  Further, the return thermostat 31 and the non-reset thermostat 32 are set at positions where the distance between the lamp heater 30 and the seat portion 25 is larger than the distance from the lamp heater 30. As a result, the temperature of the bimetal is raised earlier than the rise of the surface temperature of the seating section 25, so that the lamp heater can be used before the surface temperature of the seating section 25 of the toilet seat 22 rises excessively and becomes dangerous such as a burn. It is possible to safely cut off the 30 energization circuits.

  In the present embodiment, as shown in FIG. 3, a return thermostat 31 and a non-reset thermostat 32 are provided opposite to the lamp heater 30, and each thermostat 31, 32 is electrically connected in series with the radiant heating element. Connected. The return-type thermostat 31 is cut off at a slightly lower temperature, and the non-reset-type thermostat 32 is cut off at a higher temperature than the return-type thermostat 31 to achieve higher multiple safety and long-term operation. Can be used safely and comfortably.

  In other words, a return thermostat 31 and a non-reset type thermostat 32 are connected in series to the lamp heater 30 and further connected in series to form an energization circuit for the lamp heater 30, thereby causing abnormal power supply to the lamp heater 30. In this case, the energization circuit for the lamp heater 30 is shut off by the thermostat, so that the energization to the lamp heater 30 is safely stopped. Since the thermostats 31 and 32 are different from each other in the off operation temperature, even if one of the thermostats malfunctions and the energization circuit of the lamp heater 30 cannot be cut off, the other thermostat is not operated. Therefore, the energization circuit of the lamp heater 30 is cut off, which is safe. In addition, even if the lamp heater 30 is arranged on the substantially entire cavity portion 28 of the toilet seat 24 even when the single lamp heater 30 is arranged, the lamp heater 30 is held by the reflector, so that the weight of the user is slightly bent on the toilet seat 24. Even if this occurs, the problem that the lamp heater 30 is directly stressed is solved, and the risk of breakage of the lamp heater 30 due to bending of the toilet seat 22 or the like can be eliminated. Therefore, the seating part 25 can be uniformly heated in a very short time of several seconds from when a person enters the toilet until the person sits on the toilet seat 22 and can be used safely and comfortably.

  The lamp heater 30 is configured by enclosing a small amount of halogen gas in a filament 34 made of tungsten and an inert gas 35 such as argon inside a glass tube 33 made of quartz glass. By repeating the halogen cycle reaction for forming tungsten carbide, the filament 34 is prevented from being consumed. By this action, the filament 34 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 30 raises the seat 25 of the toilet seat 22 to an appropriate temperature at a high speed within a few seconds until the user enters the toilet room, lowers his clothes, and sits on the seat 25 of the toilet seat 22. It is a radiant heating element that can be heated.

  Since the glass tube 33 absorbs most of the wavelength of 3500 nm or more, in order to effectively heat the seating portion 25 with radiant energy, the infrared ray is emitted from the near infrared ray, and the peak of the spectral distribution of the emission wavelength is The lamp heater 30 that is at least 3500 nm or less is used. In order to realize this, the color temperature of the filament 34 of the lamp heater 30 is set to be 800K or higher. Note that the lamp heater 30 is not necessarily a halogen lamp heater depending on the required degree of characteristics.

The glass tube 33 of the lamp heater 30 has a curved portion and a straight portion 30a to facilitate the forming process.
, 30b and 30c are formed into a substantially annular shape, and feeding connection portions at both ends that overlap each other are arranged in the rear portion of the seating portion 25. The feeding connection portions at both ends are arranged so as to overlap in the front-rear direction at the rear portion of the seating portion 25. The power supply connection part seals the glass tube 33 and covers the outer side with a silicon cover, and no radiant energy is released from this part, but the rear part of the seating part has little influence on the comfort because the degree of close contact with the body is low. .

  The filament 34 has a spiral coil shape and a length of 900 to 1000 mm. The winding pitch of the filament 34 is a configuration in which two filaments 34 are connected in the vicinity of the center of the front part of the toilet seat, which is substantially the center. The amount of radiation energy from the lamp heater 30 is set according to the location, the distance to the seat surface, the distance to the seat surface, the contact state of the human body, and the like. In the present embodiment, the portion corresponding to the front of the seating portion 25 is the ancestor, and the portions corresponding to the side and the rear are dense. This suppresses the amount of heating in front of which the legs are hardly touched in the sitting state, and realizes comfortable heating by increasing the amount of heating in the side where the legs are in close contact with the rear and the capacity of the cavity of the toilet seat 22 is large. Yes.

  The connecting portion of the filament 34 corresponding to the vicinity of the center of the front part of the toilet seat has a winding pitch of the filament 34 approximately twice the wire diameter of the filament 34, the mutual filament 34 is fitted into the gap of the pitch, and a joining pin in the center of the spiral And the filament 34 and the joining pin are connected by spot welding.

  In addition, an electrode 45 is provided on a rotation shaft 44 that pivotally supports the toilet seat 22 on the main body 21, and constitutes a toilet seat position detecting means 46 together with a bearing portion (not shown) of the main body 21. Is detected or whether it is in a substantially horizontal inverted state on the toilet 20 that can be seated and used.

  The main body 21 takes in a detection signal from a room temperature thermistor 47 as a room temperature detection means to control the temperature of the lamp heater 30 and energizes the lamp heater 30 of the toilet seat 22 to start the temperature rise. There is provided a control unit 49 mainly composed of a microcomputer having a timer unit 48 for counting. Then, the control unit 49 takes in signals from the human body detection sensor 26 and the seating detection means 38 and the toilet seat position detection means 46 for detecting a person's entry, and controls the start and stop of energization of the lamp heater 30, and the thermistor 43, room temperature. The temperature of the lamp heater 30 can be controlled so that the signal from the thermistor 47 is taken in and the temperature of the seating portion 25 that is the warming surface becomes a predetermined temperature that is an appropriate temperature.

  About the sanitary washing apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the user enters the toilet, the human body detection sensor 26 detects the entry and the signal is sent to the control unit 49. At this time, when it is confirmed by the signal from the toilet seat position detecting means 46 that the toilet seat 22 is in a substantially horizontal use position, the control unit 49 starts energizing the lamp heater 30. By this initial energization, the input energy is instantaneously converted into radiant energy and radiated from the filament 34 toward the seating portion 25 of the toilet seat 22 through the glass tube 33 and the radiation reflector 29. Further, the radiation energy of the lamp heater 30 raises the temperature of the radiation absorbing layer 40 and the seating portion 25.

As described above, in the present embodiment, when the user enters the toilet, the lamp heater 30 is energized, the warming surface of the seat 25 of the toilet seat 22 can be heated almost instantaneously, and the control unit 49 Even in the unlikely event of an unsafe situation due to a failure or the like, the energization of the lamp heater 30 can be cut off by the fast response reset thermostat 31 and the non-reset thermostat 32 in which the bimetal receives the radiation energy of the lamp heater 30. Unlike a generally used heating toilet seat, which 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.

  In addition, the control unit 49 calculates from the temperature difference between them and the respective temperatures based on the signals of the thermistor 43 and the room temperature thermistor 47 at the start of energization, and initially energizes at a preset and stored high capacity. When the optimum value of the energization limit time for energization is selected and the elapsed time counted by the timer unit 48 reaches the energization limit time, the energization amount is reduced or zero, and then the seating of the toilet seat 22 is performed based on the signal from the thermistor 43 The energization amount is controlled so that the unit 25 has an appropriate temperature.

  As a result, the thermistor 43 detects the temperature in the vicinity of the seating section 25 that is actually touched by the user, and the control section 49 raises and maintains the temperature to an appropriate temperature with high accuracy, so that the use of the toilet seat 22 is comfortable. Since the input amount of the radiant energy is controlled in accordance with the load amount based on the signal from the room temperature thermistor 47, it can be heated to a proper 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 30 repeats a halogen cycle reaction for forming tungsten halide as the filament 34 generates heat, whereby the filament 34. 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 30 to bring the seating portion 25 to an appropriate temperature, the energization cycle is changed within an output range in which the halogen cycle is effective.

  On the other hand, when the toilet seat 22 is in a standing state or when a male user turns the toilet seat 22 into a standing state for small use after entering the toilet room, the control unit based on the signal from the toilet seat position detecting means 46 49 stops energizing the lamp heater 30 or reduces the energization amount. As a result, it is possible to reduce the wasteful heating of the toilet seat 22 and to further save energy, and in addition, it is possible to reduce the life of the filament 34 in the energized state due to the gravitational force applied in the length direction that is the tension direction of the filament 34. Shortening can be prevented.

  Next, when the user is seated for defecation, the energization amount to the lamp heater 30 is controlled by changing the energization amount until the energization amount to the lamp heater 30 is 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 in direct contact with the toilet seat with a built-in lamp heater, sufficient consideration must be given to safety. In a normal use state, it can be used safely and comfortably as described above. However, in the unlikely event that a malfunction occurs in the control unit 49 such as a microcomputer due to some reason, and the lamp heater 30 is continuously energized, etc. It is also necessary to operate safely. In the present embodiment, in the control circuit, in addition to the normal temperature control, a heater energization signal is monitored, and when the toilet seat temperature rises abnormally, a safety circuit is configured to cut off the heater energization.

  After the defecation is completed, the user operates the operation unit, whereby the hot water cleaning device incorporated in the main body 21 is activated, and the local part can be cleaned with the hot water ejected from the nozzle.

  When the user leaves the toilet after the stool, the human body detection sensor 26 ends the detection of the human body and stops transmitting the human body detection signal to the control unit, so that the control unit 49 is connected to the lamp heater 30. Stop energization or reduce the energization amount to lower the temperature of the toilet seat 22.

  As described above, the heating toilet seat according to the present invention can heat the seating portion efficiently by radiant energy from the radiation-type heating element and quickly raise the temperature of the seating portion. It is possible to apply to heating equipment.

The perspective view of the sanitary washing apparatus mounted in the toilet bowl in Embodiment 1 of this invention The schematic diagram of the heating toilet seat in Embodiment 1 of this invention The top view which removed the seating part of the heating toilet seat in Embodiment 1 of this invention The principal part disassembled perspective view of the heating toilet seat in Embodiment 1 of this invention Sectional drawing of the seating part of the heating toilet seat in Embodiment 1 of this invention (A) Perspective view of a thermostat mounting portion in Embodiment 1 of the present invention (b) Side view of a thermostat mounting portion Sectional drawing of the front side heater holding part in Embodiment 1 of this invention Sectional drawing of the reflector holding | maintenance part in Embodiment 1 of this invention (A) Top view of hinge cover attachment part in Embodiment 1 of this invention (b) Sectional drawing of hinge cover attachment part Sectional drawing of the ground connection part in Embodiment 1 of this invention Sectional view of the main part of a conventional heated toilet seat Plan view inside the wind tunnel of a conventional heated toilet seat Plan view of the upper reflector of a conventional heated toilet seat

22 Toilet seat 24 Upper frame body 25 Seating portion 27 Lower frame body 28 Cavity portion 30 Lamp heater (radiant heating element)
34 Filament 35 Inert gas 55 Hot water cleaning device

Claims (6)

A toilet seat comprising an upper frame body and a lower frame body having a frame-shaped seating portion and having a hollow portion therein, and a single radiation-type heating element for heating the seating portion in the hollow portion, the radiation type heating element, its both ends in the direction to be polymerized together before and after the toilet seat is molded into a substantially annular, is so Tamaki over the entire circumference along the substantially central portion of the seating portion, both ends of the radiant heating elements The part is a heated toilet seat arranged near the rear center of the seating part . Radiant heating elements is a lamp heater enclosing the helical filament with inert gas to the heat transmission tubes, toilet seats according to claim 1 wherein the filaments constituted by connecting the two filaments in a substantially central portion. The heating toilet seat according to claim 2, wherein a rough portion and a dense portion are provided on the spiral winding pitch of the filament. The heating toilet seat according to claim 2 or 3, wherein the shape of the heat-transmitting tube is an annular shape formed by combining a curved portion and a straight portion. The heating toilet seat according to any one of claims 1 to 4 , wherein at least terminal portions to be sealed at both ends of the radiant heating element are linear. A sanitary washing apparatus comprising the warm water washing apparatus and the heated toilet seat according to any one of claims 1 to 5 .