Toilet equipment

Abstract

To provide a toilet device capable of suppressing a decrease in air suction performance of an opening for sucking air inside a toilet bowl, caused by an opening for sucking moisture inside a case provided in a deodorizing device.SOLUTION: A toilet device comprises a case and a deodorizing device provided inside the case, wherein the deodorizing device includes a first opening capable of sucking air outside the case, a second opening capable of sucking air inside the case, a third opening capable of exhausting air sucked through the first opening and the second opening to the outside of the case, a suction fan for sucking air from outside and inside the case through the first opening and the second opening, a first deodorizing passage connecting the first opening and the second opening to the suction fan, and a second deodorizing passage connecting the suction fan to the third opening, wherein the second opening has a smaller aperture area than the first opening.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] Aspects of the present invention generally relate to toilet devices.

Background Art

[0002] When corrosion occurs in electronic components or the like inside the case of a toilet device, there is a possibility that the toilet device may malfunction unintentionally or may not operate. Condensation due to moisture is considered to be one of the factors causing such corrosion. In order to suppress such condensation due to moisture, there is known a toilet device provided with an opening for sucking air inside the case in a deodorizing device for sucking air inside the toilet bowl, and sucking moisture inside the case from this opening (for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described toilet device, the opening for sucking air inside the case provided in the deodorizing device may reduce the air suction performance of the opening for sucking air inside the toilet bowl. If the suction performance decreases, it may not be possible to obtain sufficient deodorizing performance.

[0005] The present invention has been made to solve the above-described problems, and an object thereof is to provide a toilet device capable of suppressing a decrease in the air suction performance at the opening for sucking air inside the toilet bowl by an opening for sucking moisture inside the case provided in the deodorizing device.

Means for Solving the Problems

[0006] A toilet device according to one embodiment of the present invention comprises a case and a deodorizing device provided inside the case, wherein the deodorizing device has a first opening capable of drawing in air from outside the case, a second opening capable of drawing in air from inside the case, a third opening capable of exhausting the air drawn in by the first and second openings to the outside of the case, a suction fan that draws in air from outside and inside the case through the first and second openings, a first deodorizing path connecting the first and second openings and the suction fan, and a second deodorizing path connecting the suction fan and the third opening, wherein the second opening has a smaller opening area than the first opening.

[0007] According to a toilet device relating to one embodiment, the opening area of ​​the second opening is smaller than that of the first opening. Therefore, when the suction fan is driven, the amount of air drawn in from the second opening can be made smaller than the amount of air drawn in from the first opening. Accordingly, by providing the second opening in the deodorizing device, it is possible to suppress a decrease in the suction performance at the first opening.

[0008] In a toilet device according to one embodiment, a human body detection sensor is further provided for detecting a human body, and the suction fan is rotated at a predetermined rotation speed until a first time has elapsed from the state in which the human body detection sensor has detected a human body until a second time has elapsed after the first time has elapsed until a second time has elapsed.

[0009] According to a toilet device relating to one embodiment, the suction fan is rotated at a predetermined speed until a first hour has elapsed from the state in which the human body detection sensor has detected a human body until a second hour has elapsed. From the end of the first hour until a second hour has elapsed, the fan is rotated at a speed lower than the predetermined speed. This makes it possible to reduce the noise of the suction fan during the second hour compared to the noise of the suction fan during the first hour. Therefore, even if there is a user in the toilet room where the toilet device is installed while moisture is being sucked in during the second hour, or if another user enters the toilet room after the previous user has used it, it is possible to suppress condensation inside the case while minimizing discomfort caused by the noise of the suction fan.

[0010] In a toilet device according to one embodiment, a human body detection sensor is further provided to detect a human body, and the suction fan is rotated at a predetermined rotation speed until a first hour has elapsed from the state in which the human body detection sensor has detected a human body until a state in which it has not detected a human body, rotated at a rotation speed greater than the predetermined rotation speed from the elapsed first hour until a second hour has elapsed, and rotated at a rotation speed less than the predetermined rotation speed from the elapsed second hour until a third hour has elapsed.

[0011] There is a concern that the noise from the suction fan may cause discomfort if the toilet has finished flushing and there is a person still in the toilet room, or if someone enters the toilet room immediately after another person has finished flushing the toilet. On the other hand, the rotation speed of the suction fan while seated is kept low enough that the seated person does not feel uncomfortable, so it is preferable to suck up as much odor and moisture as possible during the period when no one is in the toilet room after leaving the seat. Therefore, according to one embodiment of the toilet device, condensation inside the case can be further suppressed by improving the suction performance of the suction fan while suppressing discomfort to people caused by the noise from the suction fan.

[0012] In a toilet device according to one embodiment, the second time period is shorter than the third time period.

[0013] According to a toilet device relating to one embodiment, by making the period of rotation speeds higher than a predetermined rotation speed shorter than the period of rotation speeds lower than a predetermined rotation speed, it is possible to suppress the suction fan from being driven at a rotation speed higher than the predetermined rotation speed for a long period of time, thereby further reducing discomfort to people caused by the operating noise.

[0014] In a toilet device according to one embodiment, the case further comprises a fourth opening through which air can circulate between the outside of the case and the inside of the case.

[0015] According to a toilet device relating to one embodiment, the case further includes a fourth opening through which air from the outside of the case and the inside of the case can circulate. This makes it easier for air from inside the case to flow out and air from outside the case to flow in, thereby reducing the air pressure difference between the inside and outside of the case. For example, if there is a gap in the case that connects the inside and outside of the case, and the inside of the case becomes negatively pressurized by drawing air in from the second opening, there is a concern that moisture will easily flow into the case through the gap. However, by reducing the air pressure difference between the inside and outside of the case, the inflow of moisture into the case can be suppressed.

[0016] In a toilet device according to one embodiment, a filter having a mesh is provided in the fourth opening.

[0017] According to a toilet device relating to one embodiment, a filter having a mesh is provided in the fourth opening. Therefore, even when the inside of the case becomes negatively pressurized, for example, dust and dirt can be prevented from passing through the fourth opening and entering the inside of the case.

[0018] In a toilet device according to one embodiment, the deodorizing device further has ribs that suppress the suction of air into the second opening from a predetermined direction.

[0019] According to the toilet device according to an aspect of the embodiment, the deodorizing device has ribs that suppress the suction of air into the second opening from a predetermined direction. Thereby, the ribs suppress the suction into the second opening from the predetermined direction, and can preferentially suck air from other than the predetermined direction. For example, by suppressing the suction of air from the direction connecting the less likely-to-condense location in the case and the second opening, it becomes possible to preferentially suck moisture in the likely-to-condense location in the case. Therefore, it is possible to suppress condensation in the case and to suppress the occurrence of restrictions in the component layout in the case, such as installing electronic components only in the less likely-to-condense locations inside the case. Note that the likely-to-condense location in the case is, for example, a location where there is no surrounding heat-generating unit and it is easy to get cold, and the less likely-to-condense location in the case is, for example, a location where there is a surrounding heat-generating unit.

[0020] In the toilet device according to an aspect of the embodiment, further, a human body detection sensor for detecting a human body is provided, and the suction fan is rotated at a predetermined rotational speed when the human body detection sensor detects a human body, and when the human body detection sensor stops detecting a human body, it is rotated at a rotational speed smaller than the predetermined rotational speed until a predetermined time has elapsed after the detection of the human body has stopped.

[0021] According to the toilet device according to an aspect of the embodiment, even when another user enters the toilet compartment in succession more frequently after the user has used it, it is possible to suppress condensation inside the case while suppressing discomfort caused by the driving noise of the suction fan.

Advantages of the Invention

[0022] According to an aspect of the embodiment, it is possible to provide a toilet device that can suppress a decrease in the air suction performance of the opening for sucking air in the toilet bowl by the opening for sucking moisture in the case.

Brief Description of the Drawings

[0023] [Figure 1]It is a side view showing a toilet unit equipped with a toilet device according to an embodiment of the present invention. [Figure 2] It is a rear view showing the appearance of a toilet device according to an embodiment of the present invention. [Figure 3] It is a top view showing the inside of a case with the case of a toilet device according to an embodiment of the present invention omitted. [Figure 4] It is a cross-sectional view taken from the direction of arrow A-A without omitting the case in FIG. 3. [Figure 5] It is a cross-sectional view taken from the direction of arrow B-B in FIG. 1. [Figure 6] It is an enlarged view of the vicinity of arrow B1 in FIG. 5 enlarged. [Figure 7] It is a cross-sectional view taken from the direction of arrow C-C without omitting the case in FIG. 3. [Figure 8] It is a cross-sectional view taken from the direction of arrow D-D without omitting the case in FIG. 3. [Figure 9] It is a top view explaining the flow of air in the case. [Figure 10] It is a time chart showing the detection state of a human body detection sensor and the driving state of a suction fan. / / 原文中此标签下无内容,译文也保留无内容状态 [Figure 11] / / 原文中此标签下无内容,译文也保留无内容状态 It is a time chart showing the detection state of a human body detection sensor and the driving state of a suction fan of a toilet device according to a modified example.

Embodiments for Carrying Out the Invention

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each of the drawings, the same reference numerals are assigned to the same components, and detailed descriptions are omitted as appropriate.

[0025] Figure 1 is a side view showing a toilet unit equipped with a toilet device according to one embodiment of the present invention. As shown in Figure 1, the toilet unit 1 is installed in a toilet room and comprises a toilet bowl 2 and a toilet device 10 attached to the upper surface of the toilet bowl 2. The toilet device 10 has a toilet seat 12, a toilet lid 14, and a case 20. The toilet seat 12 and the toilet lid 14 are pivotally supported in relation to the case 20 so as to be able to open and close. In this specification, the directions above, below, in front, behind, to the right, and to the left are referred to as "above," "below," "in front," "behind," "to the right," and "to the left," respectively, from the perspective of a user sitting on the toilet seat 12 with their back to the open toilet lid 14.

[0026] The toilet device 10 is attached to the upper rear surface of the toilet bowl 2. The toilet device 10 may be attached integrally with the toilet bowl 2, or it may be attached detachably to the toilet bowl 2. The toilet device 10 has a case 20 formed in the shape of a hollow box, and a deodorizing device 40 provided inside the case 20 that has the function of reducing odor.

[0027] Furthermore, the case 20 may contain, as needed, an opening / closing unit (not shown) for controlling the opening and closing of the toilet lid 14 and toilet seat 12, a washing unit (not shown) for washing the human body parts, and a communication unit (not shown) capable of communicating with an operating unit such as a remote control. The case 20 pivotally supports the toilet seat 12 and toilet lid 14 at its rear. The toilet lid 14 may be provided in the toilet device 10 as needed, or it may be omitted.

[0028] The toilet seat 12 is equipped with a human body detection sensor, which is a seat detection sensor 13 that detects whether or not a user is seated. The seat detection sensor 13 detects when a human body is detected, that is, when a user is seated. Alternatively, the seat detection sensor 13 may also detect when a human body is not detected, that is, when a user is not seated (away from the seat). The seat detection sensor is not limited to the toilet seat; for example, it may be installed on the case. Furthermore, instead of a seat detection sensor, other human body detection sensors such as an entry detection sensor that detects entry into the toilet room or an approach detection sensor that detects approach to the toilet equipment may be used.

[0029] Figure 2 is a rear view showing the external appearance of a toilet device according to one embodiment of the present invention. Figure 3 is a top view showing the inside of a toilet device according to one embodiment of the present invention, with the case omitted. Figure 4 is a cross-sectional view taken from the direction of arrow AA, without omitting any cases in Figure 3. Figure 5 is a cross-sectional view taken from the direction of arrow BB in Figure 1. Figure 6 is a magnified view of the area around arrow B1 in Figure 5. Figure 7 is a cross-sectional view taken from the direction of arrow CC, without omitting any cases in Figure 3. Figure 8 is a cross-sectional view taken from the direction of arrow DD, without omitting the case in Figure 3.

[0030] As shown in Figures 2 and 4, the case 20 has a side section 21, a bottom section 26 that closes the lower end of the side section 21, and a top section 27 that closes the upper end of the side section 21. The side section 21 has a left side panel 22 and a right side panel 23 that face each other in the left-right direction, and a rear side panel 24 that connects the rear ends of the left side panel 22 and the right side panel 23. The bottom section 26 has a lower side panel 25 that connects the left side panel 22, the right side panel 23, and the rear side panel 24. As shown in Figures 4 and 6, the lower side panel 25 has a first opening 28 and a fourth opening 32 that connect the inside and outside of the case 20. As shown in Figure 4, the rear side panel 24 has a third opening 29 that connects the inside and outside of the case 20. Here, the first opening 28 is an opening that can draw in air from outside the case 20 and is connected to the first deodorization path 41 of the deodorizing device 40 inside the case 20, so that the deodorizing device 40 can draw in odors from the toilet bowl 2. The third opening 29 is an opening that can exhaust the drawn-in air to the outside of the case 20 and is connected to the second deodorization path 43 of the deodorizing device 40 inside the case 20, so that the deodorizing device 40 can discharge air F with reduced odors. Furthermore, the fourth opening 32 is an opening that allows air to flow between the outside and inside of the case 20, so that the air pressure inside the case 20 can be adjusted.

[0031] As shown in Figure 3, the first opening 28 is formed on the left front side of the toilet device 10 and above the bowl surface of the toilet bowl 2 in this embodiment. The first opening 28 may be formed in a different position, such as on the right side of the toilet device 10, as long as it is possible to draw air from inside the toilet bowl 2.

[0032] As shown in Figure 2, the third opening 29 is formed on the left side of the rear side panel 24 in this embodiment. The third opening 29 may also be formed on the left side panel 22 or the right side panel 23, if necessary.

[0033] As shown in Figure 6, the fourth opening 32 is formed on the left side of the toilet device 10 in this embodiment, connecting the outside of the toilet bowl 2 to the inside of the case 20. The fourth opening 32 may also be formed on the right side or rear of the toilet device 10, outside the toilet bowl 2, if necessary.

[0034] Multiple louvers 30 are provided in the third opening 29. As shown in Figure 2, each louver 30 consists of a plate extending horizontally inside the third opening 29 and is formed at predetermined intervals in the vertical direction. Also, as shown in Figure 4, each louver 30 is inclined downward from the inside to the outside of the case 20.

[0035] As shown in Figures 2 and 4, the third opening 29 has a plurality of louver openings 29a formed by being partitioned by each louver 30. In this embodiment, there are eight louver openings 29a. However, the number of louver openings 29a is not limited to eight. As shown in Figure 4, the air F from which the deodorizing device 40 has reduced odor is discharged diagonally downward from each louver opening 29a along each louver 30.

[0036] Furthermore, in case 20, people may wipe it with a wet cloth or spray water on it with a shower during cleaning. In such cases, water may enter through the louver opening 29a. However, since the louver 30 is sloped upward from the outside to the inside of case 20, it is difficult for water to enter the inside of case 20.

[0037] As shown in Figure 4, the deodorizing device 40 is installed inside the case 20. The deodorizing device 40 has a first suction opening 33 for drawing in air from inside the toilet bowl 2 and a second exhaust opening 34 for discharging the drawn-in air. When assembled inside the case 20, the first suction opening 33 is connected to the first opening 28, and the second exhaust opening 34 is connected to the third opening 29. In this connection, for example, a packing is inserted between the first suction opening 33 and the first opening 28, and between the second exhaust opening 34 and the third opening 29, to prevent air leakage. Furthermore, the first suction opening 33 and the first opening 28 may be formed integrally, or the first suction opening may be formed to extend to the lower side plate of the case and function as a single first opening. In this way, the first suction opening functions to draw in air from outside the case, either integrally with the first opening or through the first suction opening. Similarly, the second exhaust opening 34 and the third opening 29 may be formed integrally, or the second exhaust opening may be formed to extend to the rear side panel of the case and function as a third opening. In this way, the second exhaust opening functions to exhaust the air drawn in by the first and second openings to the outside of the case, either integrally with the third opening or through the second exhaust opening.

[0038] Furthermore, the deodorizing device 40 deodorizes the air it draws in and discharges it from the third opening 29. Specifically, the deodorizing device 40 draws in the air F1 inside the toilet bowl 2 and the air F2 inside the case 20. Then, the deodorizing device 40 reduces the odor components such as feces and urine contained in the drawn-in air and discharges the deodorized air F to the outside from the third opening 29 (louver opening 29a) of the case 20. Similarly, the moisture contained in the air drawn in from the toilet device 10 is also discharged to the outside from the third opening 29 (louver opening 29a) of the case 20. The deodorizing device 40 includes a first deodorizing path section 41, a fan 42, a second deodorizing path section 43, and a deodorizing catalyst 48.

[0039] As shown in Figure 3, the control unit 15 is located inside the case 20. When the seating detection sensor 13 detects that a user is seated, the control unit 15 can send commands to each unit built inside the case 20, such as sending a command to the toilet seat heating unit (not shown), which controls the temperature of the toilet seat surface of the toilet seat 12, to raise the temperature of the toilet seat surface of the toilet seat 12.

[0040] As shown in Figure 4, the fan 42 is located inside the case 20 and is provided downstream of the first deodorization path section 41 and upstream of the second deodorization path section 43. This fan 42 is a suction fan for drawing in air from inside the toilet bowl 2, and in this embodiment, it is a sirocco fan. The fan 42 is provided on the upper surface downstream of the first deodorization path section 41 and communicates with a second suction opening 52 formed on the upper surface downstream of the first deodorization path section 41, drawing in air from below upward. The fan 42 is also provided on the front surface of the upstream end of the second deodorization path section 43 and communicates with a first exhaust opening 53 formed on the front surface upstream of the second deodorization path section 43, exhausting the drawn-in air to the rear. Note that an axial flow fan may also be used for the fan 42. By driving this fan 42, the air F1 containing odors from inside the toilet bowl 2 and the air F2 containing moisture from inside the toilet device 10 are drawn in from the first deodorization path section 41 to the second deodorization path section 43.

[0041] Furthermore, the control unit 15 can send commands to the fan 42 to drive at a predetermined timing and rotational speed. For example, the control unit 15 can send a command to the fan 42 to rotate at a predetermined rotational speed for the first hour after the user leaves the toilet seat 12, and then rotate at a rotational speed lower than the predetermined speed from the end of the first hour until the end of the second hour. The first hour is, for example, 2 minutes, and the second hour is, for example, longer than the first hour, 30 minutes. The predetermined rotational speed during the first hour is, for example, 3700 rpm, and the rotational speed lower than the predetermined speed during the second hour is, for example, 1900 rpm. The drive control of the fan 42 performed by the control unit 15 will be explained in detail later.

[0042] The first deodorizing path section 41, the fan 42, and the second deodorizing path section 43 are connected between the first opening 28 and the third opening 29. The first deodorizing path section 41 is a duct through which the air F1 drawn in by the fan 42 from the first opening 28 flows toward the fan 42. As shown in Figures 3 and 4, the upper surface of the first deodorizing path section 41 has a second opening 31 and a rib 50 that connect the inside of the case 20 and the inside of the first deodorizing path section 41. Therefore, the first deodorizing path section 41 can draw in air not only from the first opening 28 but also from the second opening 31. The second deodorizing path section 43 is a duct through which the air discharged from the fan 42 flows toward the third opening 29. The air F1 containing odor components from inside the toilet bowl 2, drawn in by the fan 42, has its odor components reduced by a deodorizing catalyst 48 installed in the middle of the second deodorizing path section 43, and the deodorized air F is discharged from the third opening 29. Similarly, the humid air F2 inside the toilet unit 10 that the fan 42 has drawn in is also discharged from the third opening 29.

[0043] As shown in Figures 3 and 4, the second opening 31 is formed on the upper surface of the first deodorizing path section 41 in this embodiment. The second opening 31 may also be formed on the side surface of the first deodorizing path section 41 if necessary. The opening area S1 of the second opening 31 is smaller than the opening area S2 of the first opening 28. The opening area S1 is preferably about 1 / 20 of the opening area S2; for example, the opening area S1 is 60 mm². 2 (square millimeters), the opening area S2 is 1200 mm² 2 (square millimeters)

[0044] As shown in Figure 6, the fourth opening 32 allows air to flow between the inside and outside of the case 20. In this embodiment, the fourth opening 32 is formed on the left side of the lower side plate 25. When the air pressure inside the case 20 fluctuates, air F3 from outside the case 20 flows in or air from inside the toilet device 10 flows out through the fourth opening 32, thereby preventing the air pressure inside the case 20 from becoming constant.

[0045] As shown in Figure 5, a gap 44 is formed on the inside of the toilet bowl 2 in case 20, connecting the inside and outside of case 20. When there is a gap 44 in case 20, there is a concern that moisture will easily flow into case 20 through the gap 44 when the inside of case 20 becomes negative pressure. The fourth opening 32 can suppress the inflow of moisture into case 20 by reducing the air pressure difference between the inside and outside of case 20. Since a water seal is formed inside the toilet bowl 2, especially when there is a gap on the inside of the toilet bowl 2, moisture will easily flow into case 20 through the gap 44 when the inside of case 20 becomes negative pressure.

[0046] As shown in Figure 6, the filter 45 has a faceplate 47 that is sized to fit into the fourth opening 32 and has a thickness that allows air to flow through the fourth opening 32, and a mesh 46 provided on the faceplate 47 to capture dust and dirt in the air. By fitting this filter 45 into the fourth opening 32, it is possible to prevent dust and dirt contained in the air F3 flowing through the fourth opening 32 from entering the inside of the case 20.

[0047] As shown in Figures 3 and 7, the rib 50 is a vertical wall that prevents suction from areas inside the case 20 where condensation is less likely to occur (for example, near units that heat the air inside the case 20, such as the control unit 15) toward the second opening 31.

[0048] Figure 9 is a top view illustrating the airflow inside the case. As shown in Figures 3, 7, and 9, the rib 50 is formed on the upper surface of the first deodorizing path section 41 in this embodiment. The rib 50 is provided between the control unit 15 and the second opening 31 in the left-right direction when viewed from above, in order to suppress the suction of air into the second opening 31 from the direction connecting the center of the control unit 15 and the center of the second opening 31. As shown in Figure 9, the rib 50 is provided on the right side of the second opening 31. Furthermore, the rib 50 is formed in an L-shape in plan view, protruding at a height that does not contact the upper surface 27 of the case 20. As a result, the opening 60 between the second opening 31 and the fan 42 is reduced on the right side of the second opening 31 due to the rib 50.

[0049] The rib 50 suppresses the suction of air into the second opening 31 from a predetermined direction. The predetermined direction is, for example, the inlet 57 and gap 44 of the nozzle 55 for local cleaning. As shown by the arrow in Figure 9, the rib 50 is designed to facilitate the suction of air from the left rear side inside the case 20 when the second opening 31 suctions air F2 from inside the case 20. In this way, the rib 50 suppresses the entry of humid air from, for example, the toilet bowl 2 into the case 20 through the inlet 57 and gap 44 of the nozzle 55 for local cleaning. The rib 50 may be formed in places other than the duct of the first deodorizing path section 41 inside the toilet device 10. Also, the rib 50 may be formed in a different shape, for example, a U-shape in plan view, as needed.

[0050] The rib 50 is formed to suppress the intake of air from areas inside the case 20 that are less prone to condensation, and to prioritize the intake of air from areas prone to condensation over areas that are less prone to condensation. Areas that are less prone to condensation include, for example, the control unit 15 and the washing unit (not shown), which are units that generate heat during operation and the locations where these units are located. Areas that are prone to condensation include, for example, the remote control receiver 51 (see Figure 8), which is located on the left rear side inside the case 20 and receives signals from the remote control, and is an area where there are no heat-generating units adjacent to it. The rib 50 can effectively generate airflow in areas prone to condensation. As a result, the toilet device 10 can suppress the occurrence of condensation on electronic components such as the remote control receiver 51.

[0051] Figure 10 is a time chart showing the detection status of the human body detection sensor and the operating status of the suction fan. The drive control process for the fan 42 shown in Figure 10 is performed by the control unit 15.

[0052] At time t0, the seat detection sensor 13 (human body detection sensor) turns ON (seat detected). When the control unit 15 receives the seating signal transmitted from the seat detection sensor 13, it sends a first drive signal to the fan 42. When the fan 42 receives the first drive signal, it starts driving at a rotation speed N1 (for example, 3700 rpm).

[0053] This allows the deodorizing device 40 to reduce odor components based on feces and urine from the user. Also, when the user sits on the toilet seat 12, the humidity inside the toilet bowl 2 increases. The toilet device 10 can suppress the increase in humidity inside the case 20 by starting the operation of the fan 42 when the user sits on the toilet seat 12, thereby ensuring smooth air circulation inside the case 20.

[0054] At time t1, the seat detection sensor 13 (human body detection sensor) turns OFF (away from seat). When the control unit 15 receives the away-from-seat signal transmitted from the seat detection sensor 13, it measures (counts) the first time. The first time is a few seconds to a few minutes (for example, 2 minutes) and is pre-stored in the memory unit of the control unit 15.

[0055] At time t2, when the first hour has elapsed from time t1, the fan 42 is driven at a rotational speed N2 (for example, 1900 rpm). That is, the control unit 15 sends a second drive signal to the fan 42 when the first hour has elapsed since the user left the toilet seat 12. When the fan 42 receives the second drive signal, it reduces its rotational speed from rotational speed N1 to rotational speed N2. The control unit 15 also measures (counts) a second hour from time t2. The second hour is set to be longer than the first hour and is stored in the memory of the control unit 15 in advance. The second hour is from a few minutes to several tens of minutes (for example, 30 minutes).

[0056] The time between time t1 and t2 ranges from 0 minutes to several minutes, and the rotation speed may be reduced from rotation speed N1 to rotation speed N2 at the same time the user leaves the toilet seat 12. In other words, the first time does not need to be set. The control unit 15 rotates the fan 42 at a predetermined rotation speed (rotation speed N1) when the seat detection sensor 13 (human body detection sensor) detects a human body (time t0). Then, when the seat detection sensor 13 stops detecting a human body (time t1), the control unit 15 rotates the fan 42 at a rotation speed N2 that is lower than the predetermined rotation speed until a predetermined time has elapsed since the sensor stopped detecting a human body (from time t1 to time t3). The predetermined time is, for example, 30 minutes.

[0057] This makes it possible to suppress condensation inside the case 20 while minimizing the discomfort caused by the fan 42's operating noise, even when other users frequently enter the toilet room after the previous user has used it.

[0058] When a user uses the toilet device 10, the humidity inside the toilet bowl 2 increases due to excrement and the user's body temperature. In addition, the nozzle 55 (see Figure 9) for local cleaning, which discharges hot water towards the user's private parts, may become damp, and if this nozzle 55 is stored inside the case 20, the humidity inside the case 20 may increase.

[0059] Therefore, the fan 42 continues to operate even after the user leaves the toilet seat 12. During the first hour after the user leaves the toilet seat 12, the rotation speed of the fan 42 is increased to efficiently deodorize. During the second hour after the first hour has elapsed, the fan 42 is driven at a rotation speed N2 that is lower than the predetermined rotation speed (rotation speed N1) during the first hour.

[0060] This makes it possible to reduce the noise of the fan 42 during the second period compared to the noise of the fan 42 during the first period. Therefore, even if there is a user in the toilet room where the toilet device 10 is installed while moisture is being sucked in during the second period, or if another user enters the toilet room after the previous user has used it, it is possible to suppress condensation inside the case 20 while minimizing discomfort caused by the noise of the fan 42.

[0061] Then, at time t3, two hours after time t2, the control unit 15 stops the fan 42 from running. This allows the toilet device 10 to efficiently deodorize and suppress condensation inside the case 20. If the human body detection sensor (seat detection sensor 13) detects a user between time t2 and time t3 (second hour), the rotation speed of the fan 42 is changed from N2 to N1, and the control process from time t0 resumes.

[0062] According to the toilet device 10 of one embodiment of the present invention, the second opening 31 has a smaller opening area than the first opening 28. Therefore, when the fan 42 is driven, the amount of air drawn in from the second opening 31 can be made smaller than the amount of air drawn in from the first opening 28. Thus, by providing the second opening 31 in the deodorizing device 40, it is possible to suppress condensation due to moisture inside the case 20 while suppressing a decrease in the suction performance at the first opening 28.

[0063] Furthermore, according to the toilet device 10 of one embodiment of the present invention, the fan 42 is rotated at a predetermined speed until a first hour has elapsed since the user left the toilet seat 12, and then rotated at a speed lower than the predetermined speed from the first hour until a second hour has elapsed. This makes it possible to reduce the operating noise of the fan 42 during the second hour compared to the operating noise of the fan 42 during the first hour. Therefore, even if there is a user in the toilet room where the toilet device 10 is installed while moisture is being sucked in during the second hour, or if another user enters the toilet room after the previous user has used it, it is possible to suppress condensation inside the case 20 while minimizing discomfort caused by the operating noise of the fan 42.

[0064] Furthermore, if the fan 42, which is driven as a measure against condensation, is stopped using a remote control, for example, the likelihood of condensation occurring inside the case 20 increases. By reducing the aforementioned discomfort, the likelihood of the aforementioned fan 42 being stopped using a remote control can be reduced.

[0065] Furthermore, according to the toilet device 10 of one embodiment of the present invention, the case 20 is further provided with a fourth opening 32 through which air can flow between the outside and inside of the case 20. This makes it easier for air inside the case 20 to flow out and for air outside the case 20 to flow in, thereby reducing the air pressure difference between the inside and outside of the case 20. Since there is a gap 44 in the case 20 that connects the inside and outside of the case 20, for example, if the inside of the case 20 becomes negatively pressurized by drawing air in from the second opening 31, there is a concern that moisture will easily flow into the case 20 through the gap 44. However, by reducing the air pressure difference between the inside and outside of the case 20, the inflow of moisture into the case 20 can be suppressed. In addition, since the fourth opening 32 connects the outside of the toilet bowl 2 and the inside of the case 20, the inflow of moisture from the inside of the toilet bowl 2 to the inside of the case 20 via the fourth opening 32 can be suppressed compared to the case where the inside of the toilet bowl 2 and the inside of the case 20 are connected.

[0066] Furthermore, according to the toilet device 10 of one embodiment of the present invention, a filter 45 having a mesh 46 is provided. Therefore, even when the inside of the case 20 becomes negatively pressurized by drawing in air from the second opening 31, dust and dirt can be prevented from passing through the fourth opening 32 and entering the inside of the case 20.

[0067] Furthermore, according to the toilet device 10 of one embodiment of the present invention, the deodorizing device 40 has a rib 50 that suppresses the suction of air to the second opening 31 from a predetermined direction. As a result, the rib 50 suppresses the suction of air to the second opening 31 from the predetermined direction and can preferentially suction air from directions other than the predetermined direction. By suppressing the suction of air from the direction connecting the area in the case 20 that is less prone to condensation and the second opening 31, it becomes possible to preferentially suction moisture from the area in the case 20 that is prone to condensation. Therefore, it is possible to suppress condensation inside the case 20 and to suppress constraints on the layout of components inside the case 20, such as installing electronic components only in areas inside the case that are less prone to condensation or performing potting on electronic components.

[0068] Figure 11 is a time chart showing the detection status of the human body detection sensor and the operating status of the suction fan in a modified toilet device. In the embodiments described above, the case in which the rotation speed (output) of the fan 42 is changed in two stages, the first time and the second time, was used as an example. However, the embodiments of the present invention are not limited to this, and the drive of the fan 42 may be controlled in three stages, for example, as shown in the modified example in Figure 11.

[0069] Specifically, at time t0, the seat detection sensor 13 (human body detection sensor) turns ON (seat). When the control unit 15 receives the seating signal transmitted from the seat detection sensor 13, it sends a first drive signal to the fan 42. When the fan 42 receives the first drive signal, it starts driving at a rotational speed N1 (for example, 3700 rpm).

[0070] This allows the deodorizing device 40 to reduce odor components based on feces and urine from the user. Also, when the user sits on the toilet seat 12, the humidity inside the toilet bowl 2 increases. The toilet device 10 can suppress the increase in humidity inside the case 20 by starting the operation of the fan 42 when the user sits on the toilet seat 12, thereby ensuring smooth air circulation inside the case 20.

[0071] At time t11, the seat detection sensor 13 (human body detection sensor) turns OFF (away from seat). When the control unit 15 receives the away-from-seat signal transmitted from the seat detection sensor 13, it measures (counts) the first time. The first time is a few seconds to a few minutes (for example, 10 seconds) and is pre-stored in the memory unit of the control unit 15.

[0072] At time t12, when the first hour has elapsed from time t11, the fan 42 is driven at a rotational speed N3 (for example, 6300 rpm). Rotational speed N3 is, for example, the maximum output value of the fan 42. That is, the control unit 15 sends a maximum drive signal to the fan 42 when the first hour has elapsed since the user left the toilet seat 12. When the fan 42 receives the maximum drive signal, it increases its rotational speed from rotational speed N1 to rotational speed N3. Note that rotational speed N3 only needs to be greater than rotational speed N1 and does not have to be the maximum output value of the fan 42.

[0073] Furthermore, the control unit 15 measures (counts) a second time period starting from time t12. The second time period is set to be longer than the first time period and is pre-stored in the memory unit of the control unit 15. The second time period is typically several tens of seconds to several minutes (for example, 60 seconds). However, the second time period may also be set to be shorter than the first time period.

[0074] The second time period is set to simulate the time between a user who has used the toilet equipment 10 leaving the toilet equipment 10 and the next user using the toilet equipment 10. In other words, the second time period is a user changeover period. The toilet equipment 10 can draw in as much odor and moisture as possible by increasing the output of the fan 42 during the second time period when no user is in the toilet room.

[0075] At time t13, two hours after time t12, the fan 42 is driven at a rotational speed N2 (for example, 1900 rpm). That is, when the second time has elapsed, the control unit 15 sends a second drive signal to the fan 42. Upon receiving the second drive signal, the fan 42 reduces its rotational speed from N3 to N2. The control unit 15 also measures (counts) a third time from time t13. The third time is set to be longer than the first and second times and is stored in the memory of the control unit 15 beforehand. The third time is typically several minutes to several tens of minutes (for example, 30 minutes).

[0076] Then, at time t14, three hours after time t13, the control unit 15 stops the fan 42 from running. This allows the toilet device 10 to efficiently deodorize and suppress condensation inside the case 20. In the modified example, the operation of the fan 42 is controlled based on whether or not a user is near the toilet device 10. Therefore, the toilet device 10 takes into account not only deodorizing performance and suppression of condensation on electronic components inside the case 20, but also noise based on the operation sound of the fan 42.

[0077] Furthermore, if the human body detection sensor (seating detection sensor 13) detects a user between time t12 and time t14 (second and third time periods), the rotation speeds N3 and N2 of the fan 42 are changed to rotation speed N1, and the control process from time t0 is resumed.

[0078] In the modified toilet device 10, the second period is shorter than the third period. This allows for the extraction of as much odor and moisture as possible during the second period when no one is present in the toilet room after leaving the seat. Furthermore, it suppresses the fan 42 from operating at a rotation speed higher than a predetermined speed for an extended period, further reducing discomfort to people caused by the operating noise.

[0079] In the embodiments and modifications described above, the case in which the rotation speed of the fan 42 is changed in two or three stages was used as an example. However, the embodiments of the present invention are not limited to these, and the rotation speed of the fan 42 may be changed in four or more stages, for example.

[0080] The embodiment may include the following configurations.

[0081] (Composition 1) The case and, A toilet device comprising a deodorizing device provided inside the case, The deodorizing device is, The case has a first opening that allows air from outside to be drawn in, A second opening that allows air to be drawn in from inside the case, A third opening is provided that allows the air drawn in through the first and second openings to be exhausted to the outside of the case, A suction fan that draws in air from the outside and inside of the case through the first opening and the second opening, A first deodorizing path section connecting the first opening, the second opening, and the suction fan, It has a second deodorizing path section that connects the suction fan and the third opening, The second opening has a smaller opening area than the first opening. A toilet device characterized by the following features. (Configuration 2) Furthermore, it is equipped with a human body detection sensor that detects human bodies, The aforementioned suction fan, The toilet device according to configuration 1, characterized in that the human body detection sensor rotates at a predetermined rotation speed until a first hour has elapsed after it has gone from detecting a human body to not detecting a human body, and rotates at a rotation speed lower than the predetermined rotation speed from the time the first hour has elapsed until a second hour has elapsed. (Composition 3) Furthermore, it is equipped with a human body detection sensor that detects human bodies, The aforementioned suction fan, The toilet device according to configuration 1, characterized in that the human body detection sensor rotates at a predetermined rotation speed until a first hour has elapsed after it has stopped detecting a human body, rotates at a rotation speed greater than the predetermined rotation speed from the elapsed first hour until a second hour has elapsed, and rotates at a rotation speed less than the predetermined rotation speed from the elapsed second hour until a third hour has elapsed. (Composition 4) The toilet device according to configuration 3, characterized in that the second time period is shorter than the third time period. (Composition 5) The aforementioned case is, Furthermore, the toilet device according to any one of configurations 1 to 4, characterized by having a fourth opening through which air can circulate between the outside of the case and the inside of the case. (Composition 6) The toilet device according to configuration 5, characterized in that a filter having a mesh is provided in the fourth opening. (Composition 7) The deodorizing device described above is: Furthermore, the toilet device according to any one of configurations 1 to 6, characterized by having a rib that suppresses the suction of air into the second opening from a predetermined direction. (Composition 8) Furthermore, it is equipped with a human body detection sensor that detects human bodies, The aforementioned suction fan, When the human body detection sensor detects a human body, it rotates at a predetermined number of rotations. The toilet device according to configuration 1, characterized in that when the human body detection sensor stops detecting a human body, it rotates at a rotation speed smaller than the predetermined rotation speed until a predetermined time has elapsed since the human body stopped being detected.

[0082] One embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. Any design modifications made by those skilled in the art to the above-described embodiment are also included within the scope of the present invention, as long as they retain the features of the present invention. For example, the shape, dimensions, material, arrangement, and installation configuration of each element of the toilet device are not limited to those exemplified and can be modified as appropriate. Furthermore, the elements of the above-described embodiment can be combined to the extent technically feasible, and any combination thereof is also included within the scope of the present invention, as long as it retains the features of the present invention. [Explanation of symbols]

[0083] 1 Toilet unit 2 toilet bowls 10 Toilet equipment 12 toilet seats 13. Seating detection sensor (human body detection sensor) 14 Toilet lid 15 Control Unit 20 cases 21 Side part 22 Left side plate 23 Right side plate 24 Rear side plate 25 Lower side plate 26 Bottom part 27 Top part 28 First opening 29 Third opening 29a Louver opening 30 louvers 31 Second opening 32 Fourth opening 33 First suction opening 34 Second exhaust opening 40 Deodorizing device 41 First deodorization pathway section 42 Fans 43 Second deodorization pathway section 44. Gap (Gap in the case) 45 Filters 46 mesh 47 Face plate 48 Deodorizing catalyst 50 Ribs 51 Remote control receiver 52 Second suction opening 53 First exhaust opening 55 nozzles 57 Entrance 60 aperture

Claims

1. The case and, A toilet device comprising a deodorizing device provided inside the case, The deodorizing device is, The case has a first opening that allows air from outside to be drawn in, A second opening that allows air to be drawn in from inside the case, A third opening is provided that allows the air drawn in through the first and second openings to be exhausted to the outside of the case, A suction fan that draws in air from the outside and inside of the case through the first opening and the second opening, A first deodorizing path section connecting the first opening, the second opening, and the suction fan, It has a second deodorizing path section that connects the suction fan and the third opening, The second opening has a smaller opening area than the first opening. Furthermore, it is equipped with a human body detection sensor that detects human bodies, The aforementioned suction fan, A toilet device characterized in that it rotates at a predetermined rotation speed until a first hour has elapsed after the human body detection sensor changes from a state in which it detects a human body to a state in which it does not detect a human body, and rotates at a rotation speed lower than the predetermined rotation speed from the time the first hour has elapsed until a second hour has elapsed.

2. The case and, A toilet device comprising a deodorizing device provided inside the case, The deodorizing device is, The case has a first opening that allows air from outside to be drawn in, A second opening that allows air to be drawn in from inside the case, A third opening is provided that allows the air drawn in through the first and second openings to be exhausted to the outside of the case, A suction fan that draws in air from the outside and inside of the case through the first opening and the second opening, A first deodorizing path section connecting the first opening, the second opening, and the suction fan, It has a second deodorizing path section that connects the suction fan and the third opening, The second opening has a smaller opening area than the first opening. Furthermore, it is equipped with a human body detection sensor that detects human bodies, The aforementioned suction fan, A toilet device characterized in that it rotates at a predetermined rotation speed until a first hour has elapsed since the human body detection sensor stopped detecting a human body, rotates at a rotation speed greater than the predetermined rotation speed from the first hour until a second hour has elapsed, and rotates at a rotation speed less than the predetermined rotation speed from the second hour until a third hour has elapsed.

3. The toilet device according to claim 2, characterized in that the second time period is shorter than the third time period.

4. The aforementioned case is, Furthermore, the toilet device according to any one of claims 1 to 3 is characterized by having a fourth opening through which air can circulate between the outside of the case and the inside of the case.

5. The toilet device according to claim 4, characterized in that a filter having a mesh is provided in the fourth opening.

6. The deodorizing device is, Furthermore, the toilet device according to any one of claims 1 to 3 is characterized by having a rib that suppresses the suction of air into the second opening from a predetermined direction.

7. The case and, A toilet device comprising a deodorizing device provided inside the case, The deodorizing device is, The case has a first opening that allows air from outside to be drawn in, A second opening that allows air to be drawn in from inside the case, A third opening is provided that allows the air drawn in through the first and second openings to be exhausted to the outside of the case, A suction fan that draws in air from the outside and inside of the case through the first opening and the second opening, A first deodorizing path section connecting the first opening, the second opening, and the suction fan, It has a second deodorizing path section that connects the suction fan and the third opening, The second opening has a smaller opening area than the first opening. Furthermore, it is equipped with a human body detection sensor that detects human bodies, The aforementioned suction fan, When the human body detection sensor detects a human body, it rotates at a predetermined number of rotations. A toilet device characterized in that, when the human body detection sensor stops detecting a human body, it rotates at a rotation speed lower than the predetermined rotation speed until a predetermined time has elapsed since the sensor stopped detecting a human body.

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