Toilet cleaning device and toilet device

Abstract

To provide a sanitary washing device and a toilet device that can suppress bacterial growth in a nozzle storage part and a bowl part by short-time irradiation with sterilizing light while preventing cost increase due to the increased number of illumination parts.SOLUTION: A sanitary washing device, installed on a toilet bowl having a bowl part for receiving waste matter, comprises: an intimate washing nozzle with a water discharge port for discharging wash water toward a user's private parts, which advances and retracts; a casing having a nozzle storage part capable of storing the intimate washing nozzle in a retracted state; and an illumination part that emits sterilizing light having a sterilization action, wherein the illumination part simultaneously emits sterilizing light to the nozzle storage part and the bowl part.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] Embodiments of the present invention generally relate to a sanitary cleaning device and a toilet device.

Background Art

[0002] In a toilet device, it is known that visible stains are likely to occur in the nozzle storage part inside the casing and the bowl part outside the casing due to the growth of bacteria. In such a toilet device, for example, there is a known technique of suppressing the growth of bacteria by irradiating a germicidal light such as ultraviolet light on a part where bacteria are likely to grow, and suppressing the occurrence of visible stains (for example, Patent Document 1). Bacteria become visible stains when the number of bacteria per unit area exceeds a predetermined value. In general, the intensity of suppressing the growth of bacteria by ultraviolet irradiation is expressed by the integrated irradiance, which is the product of the irradiance and the irradiation time. When the number of bacteria per unit area at the start of ultraviolet irradiation is defined as the initial number of bacteria, the occurrence of visible stains can be suppressed by suppressing the growth of bacteria by ultraviolet irradiation so that the number of bacteria does not reach the number of bacteria that become visible stains from the initial number of bacteria.

[0003] In the prior art, although the inside of the nozzle storage part is sterilized by ultraviolet light, there is a problem that the surface of the bowl part cannot be sterilized. In Patent Document 1, in order to solve this problem, the irradiation part that irradiates ultraviolet light is moved between the inside of the casing and the bowl part, so that both the nozzle storage part and the bowl part can be irradiated with ultraviolet light by a common irradiation part. In this way, in Patent Document 1, by sharing the irradiation part, cost reduction can be achieved compared with the case where an irradiation part is provided for each of the nozzle storage part and the bowl part to be irradiated.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the toilet device described in Patent Document 1, since a common illumination unit is used, it is necessary to irradiate the nozzle storage unit and the bowl unit with ultraviolet light in sequence, and there is a problem that it takes time to complete the irradiation sequence. Since bacteria grow by division, they grow exponentially with respect to time. That is, if the irradiation is delayed, the number of bacteria that must be killed (initial number of bacteria) will grow exponentially with respect to the elapsed time. Generally, the effect of suppressing the growth of bacteria by light irradiation is expressed by the number of digits of the decreasing number of bacteria with respect to the integrated irradiance. For example, the effect of suppressing the growth of bacteria by irradiation with germicidal rays is a three-digit decrease at 5 mJ / cm 2 . Since the number of bacteria that should be maintained to prevent visible stains is below a predetermined value, if the initial number of bacteria increases, the integrated irradiance required to reduce the number of bacteria below the predetermined value also increases. By starting the light irradiation at the earliest possible timing after the bacteria adhere, the number of bacteria can be reduced to below the predetermined value (or the number of bacteria can be kept below the predetermined value) with a smaller integrated irradiance, and the formation of visible stains can be suppressed.

[0006] The embodiment of the present invention has been made based on the recognition of such problems, and an object thereof is to provide a sanitary cleaning device and a toilet device that can suppress the growth of bacteria in the nozzle storage unit and the bowl unit by irradiating sterilizing light for a short time while preventing an increase in cost due to an increase in the illumination unit.

Means for Solving the Problems

[0007] A first invention is a sanitary cleaning device installed on a toilet having a bowl unit for receiving dirt, the sanitary cleaning device having a water discharge port for discharging cleaning water toward a user's genital area, a local cleaning nozzle that moves forward and backward, a casing having a nozzle storage unit capable of storing the local cleaning nozzle in a state where the local cleaning nozzle is retracted, and an illumination unit that irradiates sterilizing light, which is light having a sterilizing effect. The sanitary cleaning device is characterized in that the illumination unit simultaneously irradiates the nozzle storage unit and the bowl unit with the sterilizing light.

[0008] According to this sanitary cleaning device, by irradiating the nozzle storage part and the bowl part with sterilizing light from a common light irradiation part, an increase in cost can be prevented. Further, by irradiating the nozzle storage part and the bowl part with sterilizing light simultaneously, the irradiation of sterilizing light can be started in a state where the initial number of bacteria attached to the nozzle storage part and the bowl part is minimized as much as possible. Therefore, the integrated irradiance necessary for suppressing the growth of bacteria can be reduced. When the irradiance is the same, starting irradiation simultaneously rather than sequentially can reach a predetermined integrated irradiance with a shorter irradiation time, making it possible to suppress the growth of bacteria. Accordingly, while preventing an increase in cost due to an increase in the light irradiation part, the growth of bacteria in the nozzle storage part and the bowl part can be suppressed by irradiating sterilizing light for a short time. Thereby, the generation of dirt can be suppressed, and a highly sanitary sanitary cleaning device can be provided.

[0009] A second invention is a sanitary cleaning device according to the first invention, wherein an average value of the irradiance of the inner surface of the nozzle storage part irradiated with the sterilizing light is larger than an average value of the irradiance of the surface of the bowl part irradiated with the sterilizing light.

[0010] Among the objects irradiated with the sterilizing light, the nozzle storage part is inside the casing, and the bowl part is outside the casing. The bowl part is cleaned every time the toilet device (toilet) is used by the user. On the other hand, for example, when a man stands and urinates, the local cleaning nozzle is not used, so the local cleaning nozzle and the nozzle storage part are not cleaned. That is, in the bowl part, since bacteria are washed away by cleaning every time the toilet device is used, the number of bacteria tends to decrease. In contrast, in the nozzle storage part, since it may not be cleaned even when the toilet device is used, the number of bacteria is difficult to decrease. Therefore, the number of bacteria in the nozzle storage part may be larger than that in the bowl part. As the number of bacteria increases, the integrated irradiance required to suppress the growth of bacteria becomes larger. Therefore, by making the average value of the irradiance on the inner surface of the nozzle storage part irradiated with the sterilizing light larger than the average value of the irradiance on the surface of the bowl part irradiated with the sterilizing light, the sterilization intensity in the nozzle storage part where the number of bacteria is more likely to be larger than that in the bowl part can be made stronger than the sterilization intensity in the bowl part. Therefore, the growth of bacteria in the nozzle storage part and the bowl part can be efficiently suppressed. As a result, the generation of dirt in the nozzle storage part and the bowl part can be efficiently suppressed.

[0011] The third invention is a sanitary cleaning device according to the first invention, characterized in that the light irradiating part is provided inside the casing.

[0012] Compared with the bowl part, the nozzle storage part has fewer cleaning times and there is a possibility that the number of bacteria will increase. When the number of bacteria increases, the integrated irradiance required to suppress the growth of bacteria becomes larger. Generally, for light sources other than lasers, the closer the distance, the larger the irradiance emitted from the light source. By providing an illumination unit inside the casing, it becomes possible to irradiate the nozzle storage part with sterilizing light at a larger irradiance than the bowl part. Therefore, by providing an illumination unit inside the casing, even if the sterilizing light is simultaneously irradiated from a common illumination unit to the nozzle storage part, where the number of bacteria is more likely to be larger than that of the bowl part, and the bowl part, the difference between the time required to reduce the number of bacteria to a predetermined value or less in the nozzle storage part and the time required to reduce the number of bacteria to a predetermined value or less in the bowl part can be reduced, so that the irradiation time of the sterilizing light can be shortened.

[0013] The fourth invention is the first invention, wherein the bowl part has a rear bowl part located behind the anal cleaning position and a front bowl part located in front of the anal cleaning position with reference to the anal cleaning position, and the average value of the irradiance on the surface of the rear bowl part irradiated with the sterilizing light is larger than the average value of the irradiance on the surface of the front bowl part irradiated with the sterilizing light. It is a sanitary cleaning device characterized by this.

[0014] As described above, as the number of bacteria increases, the cumulative irradiance required to reduce the number of bacteria to a predetermined value or less also increases. The anus cleaning position corresponds to the general position of the anus when the user is seated on the toilet seat. The user seated on the toilet seat defecates in a forward-leaning posture. Then, the organic matter contained in the feces is likely to adhere to the rear part of the bowl, which is located behind the anus cleaning position. That is, compared with the front part of the bowl, the rear part of the bowl is more likely to have organic matter that serves as food for bacteria adhering to it, creating an environment where bacteria are more likely to grow, resulting in a larger initial number of bacteria. Therefore, by making the average value of the irradiance on the surface of the rear part of the bowl irradiated with the sterilizing light larger than the average value of the irradiance on the surface of the front part of the bowl irradiated with the sterilizing light, the sterilization intensity in the rear part of the bowl, where the initial number of bacteria is more likely to be larger than that in the front part of the bowl, can be made stronger than the sterilization intensity in the front part of the bowl. Therefore, the growth of bacteria in the rear part and the front part of the bowl can be efficiently suppressed. As a result, even if the sterilizing light is simultaneously irradiated from a common illumination unit to the rear part of the bowl, where the initial number of bacteria is more likely to be larger than that in the front part of the bowl, and the front part of the bowl, the difference between the time required to reduce the number of bacteria in the rear part of the bowl to a predetermined value or less and the time required to reduce the number of bacteria in the front part of the bowl to a predetermined value or less can be reduced. Therefore, the irradiation time of the sterilizing light can be shortened, and the generation of dirt in the bowl part can be efficiently suppressed.

[0015] A fifth invention is a toilet device including the sanitary cleaning device according to any one of the first to fourth inventions and the toilet bowl.

[0016] According to this toilet device, by irradiating the nozzle storage part and the bowl part with sterilizing light from a common illumination unit, an increase in cost can be prevented. Also, by simultaneously irradiating the nozzle storage part and the bowl part with sterilizing light, it becomes possible to suppress the growth of bacteria with a shorter irradiation time compared to the case where the bacteria are irradiated with light in sequence. Therefore, while preventing an increase in cost due to an increase in the illumination unit, the growth of bacteria in the nozzle storage part and the bowl part can be suppressed with a short-time irradiation of the sterilizing light. As a result, the generation of dirt can be suppressed, and a highly hygienic toilet device can be provided.

Effects of the Invention

[0017] According to an aspect of the present invention, it is possible to provide a sanitary cleaning device and a toilet device that can suppress the growth of bacteria in the nozzle storage part and the bowl part by irradiating sterilizing light for a short time while preventing an increase in cost due to an increase in the light irradiation part.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Best Mode for Carrying Out the Invention

[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a toilet device according to an embodiment. As shown in FIG. 1, the toilet device 1 includes a toilet bowl 800 and a sanitary washing device 100 installed thereon. The toilet bowl 800 is a so-called wall-mounted toilet bowl. The toilet bowl 800 has a bowl portion 801 for receiving excrement. The toilet bowl 800 will be described later.

[0020] The sanitary washing device 100 includes a casing 400, a toilet seat 200, and a toilet lid 300. The toilet seat 200 and the toilet lid 300 are respectively pivotally supported with respect to the casing 400 so as to be openable and closable.

[0021] In the present specification, the upper, lower, front, rear, right side, and left side as viewed from a user sitting on the toilet seat 200 with the toilet lid 300 on the back are referred to as "upper", "lower", "front", "rear", "right side", and "left side", respectively.

[0022] Inside the casing 400, a body washing function unit for realizing washing of the "buttocks" of a user sitting on the toilet seat 200 and the like is incorporated. Further, for example, inside the casing 400, a seating detection sensor 404 (see FIG. 2) for detecting the seating of a user on the toilet seat 200 is provided. When the seating detection sensor 404 detects a user sitting on the toilet seat 200, if the user operates an operation unit 500 such as a remote control, a local washing nozzle (hereinafter, simply referred to as a "nozzle" for convenience of explanation) 473 can be advanced into the bowl portion 801 of the toilet bowl 800 or retracted from the inside of the bowl portion 801. In the sanitary washing device 100 shown in FIG. 1, the nozzle 473 is shown in a state of being advanced into the bowl portion 801.

[0023] One or more water discharge ports 474 are provided at the tip of the nozzle 473. The water discharge port 474 discharges washing water toward the user's local area. The nozzle 473 can wash the local area such as the "buttocks" of the user sitting on the toilet seat 200 by jetting water from the water discharge port 474 provided at its tip.

[0024] FIG. 2 is a block diagram showing the main part configuration of the sanitary washing device according to the embodiment. In FIG. 2, the main part configurations of the water channel system and the electric system are shown together.

[0025] As shown in FIG. 2, the sanitary washing device 100 has a water guiding part 20. The water guiding part 20 has a pipeline 20a extending from a water supply source 10 such as a water supply or a water storage tank to the nozzle 473. The water guiding part 20 guides the water supplied from the water supply source 10 to the nozzle 473 through the pipeline 20a. The pipeline 20a is formed by, for example, each part such as a solenoid valve 431, a heat exchanger unit 440, a flow path switching part 472 described below, and a plurality of pipes connecting these parts.

[0026] A solenoid valve 431 is provided on the upstream side of the water guiding part 20. The solenoid valve 431 is an electromagnetic valve that can be opened and closed, and controls the water supply based on a command from a control part 405 provided inside a casing 400. In other words, the solenoid valve 431 opens and closes the pipeline 20a. By setting the solenoid valve 431 to the open state, the water supplied from the water supply source 10 flows into the pipeline 20a.

[0027] A pressure regulating valve 432 is provided downstream of the solenoid valve 431. The pressure regulating valve 432 adjusts the pressure in the pipeline 20a to a predetermined pressure range when the water supply pressure is high. A check valve 433 is provided downstream of the pressure regulating valve 432. The check valve 433 suppresses the backflow of water to the upstream side of the check valve 433 when the pressure in the pipeline 20a decreases.

[0028] Downstream of the check valve 433, a heat exchanger unit 440 (heating section) is provided. The heat exchanger unit 440 has a heater and heats the water supplied from the water supply source 10 to raise the temperature, for example, to a specified temperature. That is, the heat exchanger unit 440 generates hot water.

[0029] The heat exchanger unit 440 is an instantaneous heating type (instantaneous type) heat exchanger using, for example, a ceramic heater. Compared with a storage water heating type heat exchanger using a hot water storage tank, the instantaneous heating type heat exchanger can raise the temperature of water to a specified temperature in a short time. Note that the heat exchanger unit 440 is not limited to an instantaneous heating type heat exchanger and may be a storage water heating type heat exchanger. Further, the heating section is not limited to a heat exchanger and may use other heating methods, such as those utilizing microwave heating.

[0030] The heat exchanger unit 440 is connected to the control unit 405. The control unit 405 controls the heat exchanger unit 440 according to the operation of the operation unit 500 by the user, for example, to raise the temperature of the water to the temperature set by the operation unit 500.

[0031] Downstream of the heat exchanger unit 440, a flow rate sensor 442 is provided. The flow rate sensor 442 detects the flow rate of the water discharged from the heat exchanger unit 440. That is, the flow rate sensor 442 detects the flow rate of the water flowing in the pipeline 20a. The flow rate sensor 442 is connected to the control unit 405. The flow rate sensor 442 inputs the detection result of the flow rate to the control unit 405.

[0032] Downstream of the flow rate sensor 442, an electrolytic cell unit 450 is provided. The electrolytic cell unit 450 generates a liquid (functional water) containing hypochlorous acid from tap water by electrolyzing the tap water flowing inside. The electrolytic cell unit 450 is connected to the control unit 405. The electrolytic cell unit 450 generates sterilized water (functional water) based on the control by the control unit 405.

[0033] The functional water generated in the electrolytic cell unit 450 may be a solution containing metal ions such as silver ions and copper ions. Further, the functional water generated in the electrolytic cell unit 450 may be a solution containing electrolytic chlorine, ozone, or the like. Alternatively, the functional water generated in the electrolytic cell unit 450 may be acidic water or alkaline water.

[0034] A vacuum breaker (VB) 452 is provided downstream of the electrolytic cell unit 450. The vacuum breaker 452 has, for example, a flow path for flowing water, an intake port for taking in air into the flow path, and a valve mechanism for opening and closing the intake port. The valve mechanism closes the intake port when water is flowing in the flow path, and opens the intake port to take in air into the flow path as the water flow stops. That is, the vacuum breaker 452 takes in air into the pipe line 20a when there is no water flow in the water guiding part 20. For example, a float valve is used for the valve mechanism.

[0035] By taking in air into the pipe line 20a as described above, the vacuum breaker 452 promotes, for example, the draining of water in a portion downstream of the vacuum breaker 452 in the pipe line 20a. The vacuum breaker 452 promotes, for example, the draining of water in the nozzle 473. In this way, by draining the water in the nozzle 473 and taking in air into the nozzle 473, the vacuum breaker 452 suppresses, for example, the backflow of the cleaning water in the nozzle 473 and the dirty water accumulated in the bowl part 801 to the water supply source 10 (city water) side.

[0036] A pressure modulation unit 454 is provided downstream of the vacuum breaker 452. The pressure modulation unit 454 imparts pulsation or acceleration to the water flow in the pipe line 20a of the water guiding part 20, and imparts pulsation to the water discharged from the water discharge part 478a of the nozzle 473 and the nozzle cleaning part 478. That is, the pressure modulation unit 454 varies the flow state of the water flowing in the pipe line 20a. The pressure modulation unit 454 is connected to the control unit 405. The pressure modulation unit 454 varies the flow state of the water based on the control by the control unit 405. The pressure modulation unit 454 varies the pressure of the water in the pipe line 20a.

[0037] Downstream of the pressure modulation unit 454, a flow rate adjustment unit 471 is provided. The flow rate adjustment unit 471 adjusts the water potential (flow rate). Downstream of the flow rate adjustment unit 471, a flow path switching unit 472 is provided. The flow path switching unit 472 opens, closes, and switches the water supply to the nozzle 473 and the nozzle cleaning unit 478. The flow rate adjustment unit 471 and the flow path switching unit 472 may be provided as one unit. The flow rate adjustment unit 471 and the flow path switching unit 472 are connected to the control unit 405. The operations of the flow rate adjustment unit 471 and the flow path switching unit 472 are controlled by the control unit 405.

[0038] Downstream of the flow path switching unit 472, a nozzle 473, a nozzle cleaning unit 478, and a spray nozzle 479 are provided. The nozzle 473 receives the driving force from the nozzle motor 476 and advances into or retracts from the bowl portion 801 of the toilet 800. The nozzle motor 476 constitutes a nozzle drive unit and advances or retracts the nozzle 473 based on a command from the control unit 405.

[0039] The nozzle cleaning unit 478 cleans and disinfects the outer peripheral surface 473c (body) of the nozzle 473 by spraying sterilized water (functional water) from the water discharge portion 478a. Note that the nozzle cleaning unit 478 may clean the outer peripheral surface 473c of the nozzle 473 by spraying water from the water discharge portion 478a. The spray nozzle 479 sprays water or functional water in a mist form onto the bowl portion 801. In this example, a spray nozzle 479 is provided separately from the nozzle 473 for cleaning the human body. Without being limited to this, a water discharge port for spraying a mist-like liquid onto the bowl portion 801 may be provided in the nozzle 473.

[0040] Also, downstream of the flow path switching section 472, a buttock washing flow path 21, a gentle washing flow path 22, and a bidet washing flow path 23 are provided. The buttock washing flow path 21 and the gentle washing flow path 22 guide the water supplied from the water supply source 10 via the water guiding section 20 or the functional water generated in the electrolytic cell unit 450 to the buttock washing water outlet 474b. The bidet washing flow path 23 guides the water supplied from the water supply source 10 via the water guiding section 20 or the functional water generated in the electrolytic cell unit 450 to the bidet washing water outlet 474a.

[0041] Also, downstream of the flow path switching section 472, a surface washing flow path 24 and a spraying flow path 25 are provided. The surface washing flow path 24 guides the water supplied from the water supply source 10 via the water guiding section 20 or the functional water generated in the electrolytic cell unit 450 to the nozzle cleaning section 478. The spraying flow path 25 guides the water supplied from the water supply source 10 via the water guiding section 20 or the functional water generated in the electrolytic cell unit 450 to the spray nozzle 479.

[0042] The control unit 405 controls the flow path switching section 472 to switch the opening and closing of each of the buttock washing flow path 21, the gentle washing flow path 22, the bidet washing flow path 23, the surface washing flow path 24, and the spraying flow path 25. In this way, the flow path switching section 472 switches between a state in which it is communicated with the pipeline 20a and a state in which it is not communicated with the pipeline 20a for each of a plurality of water outlets such as the bidet washing water outlet 474a, the buttock washing water outlet 474b, the nozzle cleaning section 478, and the spray nozzle 479.

[0043] The control unit 405 is supplied with power from the power supply circuit 401 and controls the operations of the solenoid valve 431, the heat exchanger unit 440, the electrolytic cell unit 450, the pressure modulation section 454, the flow rate adjustment section 471, the flow path switching section 472, the nozzle motor 476, etc. based on signals from the human body detection sensor 403, the seating detection sensor 404, the flow rate sensor 442, the operation unit 500, etc.

[0044] Further, the control unit 405 controls the illumination unit 600 based on detection information from, for example, the human body detection sensor 403 or the seating detection sensor 404. The illumination unit 600 simultaneously irradiates the periphery of the nozzle 473 (such as the nozzle storage unit 480 described later) and the bowl unit 801 with sterilizing light, which is light having a sterilizing effect. The illumination unit 600 will be described later.

[0045] The human body detection sensor 403 detects a user (human body) approaching the toilet seat 200. In other words, the human body detection sensor 403 detects a user near the sanitary cleaning device 100. The control unit 405 automatically opens the toilet lid 300 in response to the detection of the user by, for example, the human body detection sensor 403.

[0046] Also, the casing 400 may be appropriately provided with various mechanisms (additional function parts) such as a "warm air drying function" for blowing warm air toward the "buttocks" of a user sitting on the toilet seat 200 to dry, a "deodorizing unit", and an "indoor heating unit". However, in the present invention, these additional function parts do not necessarily have to be provided.

[0047] FIGS. 3(a) and 3(b) are cross-sectional views showing the periphery of the local cleaning nozzle of the toilet device according to the embodiment. FIG. 3(a) is a cross-sectional view showing a state where the nozzle 473 has retracted and is stored in the nozzle storage unit 480. FIG. 3(b) is a cross-sectional view showing a state where the nozzle 473 has advanced.

[0048] As shown in FIG. 3(a), the casing 400 has a nozzle storage unit 480. The nozzle storage unit 480 can store the entire nozzle 473 in a state where the nozzle 473 has retracted. That is, the nozzle storage unit 480 is a portion inside the casing 400 where the nozzle 473 is stored.

[0049] The nozzle storage portion 480 has a bottom portion 481a located below the nozzle 473, side wall portions 481b located on both the left and right sides of the nozzle 473 (bottom portion 481a), and an opening 482 provided at the front end of the nozzle storage portion 480. In this example, the bottom portion 481a is a part of the case plate 400a that constitutes the bottom surface of the casing 400. In this example, the side wall portions 481b are parts of the case plate 400a or the case cover 400b that constitute the side surfaces of the casing 400. When other components are provided between the side surface of the casing 400 and the nozzle 473 in the left - right direction (that is, when other components covering the side of the nozzle 473 are provided), the side surface of this component corresponds to the side wall portion 481b. The inner wall 481 of the nozzle storage portion 480 is constituted by the bottom portion 481a and the side wall portions 481b. The upper part of the nozzle storage portion 480 is covered by the case cover 400b that constitutes the upper surface of the casing 400. That is, in this example, the case cover 400b constitutes the upper surface portion of the inner wall 481. When other components are provided between the case cover 400b and the nozzle 473 in the up - down direction (that is, when other components covering the upper part of the nozzle 473 are provided), this component corresponds to the upper surface portion of the inner wall 481. The nozzle storage portion 480 is provided with a nozzle support portion 484 that supports the nozzle 473 so as to be movable forward and backward.

[0050] The bottom portion 481a is inclined toward the bowl portion 801 of the toilet 800. Thereby, the antibacterial water discharged from the nozzle cleaning portion 478, the video cleaning discharge port 474a, and the buttocks cleaning discharge port 474b flows down from the bottom portion 481a into the bowl portion 801 of the toilet 800.

[0051] The nozzle support portion 484 supports the nozzle 473 below the nozzle 473. The nozzle support portion 484 is inclined downward in the direction from the rear to the front. The nozzle 473 advances and retracts while sliding with respect to the nozzle support portion 484. In the nozzle storage portion 480, for example, a cylindrical member for storing the nozzle 473 may be provided. In this case, among the cylindrical members, the portion located below the nozzle 473 corresponds to the bottom portion 481a, the portion located on the side of the nozzle 473 corresponds to the side wall portion 481b, and the portion located above the nozzle 473 corresponds to the upper surface portion.

[0052] The nozzle cleaning portion 478 is provided at the tip of the nozzle 473 in a state where the nozzle 473 is retracted inside the casing 400. The nozzle cleaning portion 478 has a water discharge portion 478a in which water discharge holes for discharging sterilized water and water toward the outer peripheral surface 473c of the nozzle 473 are formed. An opening 482 is provided at the front end of the nozzle storage portion 480. The opening 482 is provided on the lower side of the front surface of the casing 400. The nozzle cleaning portion 478 is located behind the opening 482. The nozzle cleaning portion 478 cleans the outer peripheral surface 473c (body) of the nozzle 473 by spraying sterilized water or water from the water discharge portion 478a, for example, when the nozzle 473 advances and retracts.

[0053] When not in use, the nozzle 473 is stored in the nozzle storage portion 480 as shown in FIG. 3(a). When local cleaning is performed by the nozzle 473, the nozzle 473 slides forward and downward with respect to the nozzle storage portion 480 as shown in FIG. 3(b). For example, the nozzle 473 is cleaned by the water discharged from the nozzle cleaning portion 478 until the nozzle 473 reaches a predetermined position.

[0054] When the nozzle 473 reaches a predetermined position, water is discharged from the bidet washing water outlet 474a or the buttocks washing water outlet 474b toward the user's genital area, and washing is performed. When the local washing is completed, the nozzle 473 slides rearward and upward toward the nozzle storage portion 480. For example, until the nozzle 473 is stored in the nozzle storage portion 480, the nozzle 473 is washed by the water discharged from the water discharge portion 478a. The nozzle 473 retracts to a predetermined position and is stored in the nozzle storage portion 480.

[0055] At this time, the water discharged (sterilized water) from the water discharge portion 478a flows inside the nozzle storage portion 480, and most of it flows down from the opening 482 into the bowl portion 801 of the toilet 800. However, for example, due to the shape of the nozzle storage portion 480, the surface tension of the sterilized water, etc., sterilized water may remain on the inner wall 481 of the nozzle storage portion 480. In the water that remains in this way, the concentration of the sterilizing component decays over time. Then, the inside of the nozzle storage portion 480 becomes an environment where bacteria and mold are likely to occur.

[0056] FIG. 4(a) and FIG. 4(b) are cross-sectional views showing a toilet device according to an embodiment. FIG. 5(a) and FIG. 5(b) are a perspective view and a plan view showing a toilet bowl of the toilet device according to the embodiment. FIG. 4(a) and FIG. 4(b) are cross-sectional views at the position of the line A1 - A2 shown in FIG. 5(b).

[0057] As shown in FIG. 4(a), the toilet 800 has a concave bowl portion 801 for receiving excrement and a drainage portion 802 for discharging excrement together with water. The bowl portion 801 has a receiving portion 804 and a rim portion 805 provided on the receiving portion 804. The rim portion 805 is an annular portion that forms the upper edge portion of the toilet 800. The rim portion 805 has an upper surface 806. The upper surface 806 is a surface facing the back surface 204 of the closed toilet seat 200. The bowl portion 801 corresponds to the portion shown by hatching in FIG. 4(b). In the bowl portion 801, stored water 801w is stored.

[0058] FIG. 5(a) is a perspective view showing the toilet bowl 800, and FIG. 5(b) is a plan view showing the toilet bowl 800. The toilet bowl 800 has a water outlet 811 provided in the rim portion 805. The water outlet 811 discharges washing water for discharging dirt (e.g., the user's excrement, etc.) from inside the bowl portion 801 into the bowl portion 801.

[0059] For example, when the user operates the toilet cleaning by operating a switch provided on an operation unit (remote control) 500 or the like, or when the user stands up from the toilet seat 200, toilet cleaning is executed in which washing water is supplied from the water outlet 811 into the bowl portion 801. As a result, the dirt in the bowl portion 801 is discharged to the drainage portion 802, and the surface of the bowl portion 801 is cleaned. Thus, since the bowl portion 801 comes into contact with dirt, organic substances contained in the dirt tend to adhere to the bowl portion 801. Therefore, the bowl portion 801 is a portion where dirt is likely to occur due to the growth of bacteria using the organic substances as food.

[0060] As means for suppressing the growth of bacteria, in addition to the germicidal water described above, there are also means using ions, ozone, etc. Ions, ozone, etc. are means aimed at expressing an effect on the dirt suppression target site by an air flow. However, it is difficult to control the effect range of the air flow, and the air flow that cannot be completely controlled may cause problems such as malfunction due to corrosion of electronic components inside the case and deterioration of resin materials. On the other hand, light can be irradiated limited to the dirt suppression target site. Regarding the deterioration of the resin material, it is possible to avoid problems by appropriately managing the irradiation amount according to the wavelength and the irradiation target material.

[0061] In the prior art, the inside of the nozzle storage portion is sterilized by ultraviolet rays, but in response to the problem that the inner surface of the bowl portion cannot be sterilized, in Patent Document 1, an illumination unit that irradiates ultraviolet rays is moved to the nozzle storage portion and the bowl portion, so that both the nozzle storage portion and the bowl portion can be irradiated with ultraviolet rays by the common illumination unit. Thus, in Patent Document 1, by using the common illumination unit 600, the cost due to the addition of the illumination unit is reduced.

[0062] However, in Patent Document 1, since the common irradiation unit is used to irradiate ultraviolet rays to the nozzle storage unit and the bowl unit in order, there is a problem that it takes time until the completion of the irradiation sequence. Since bacteria grow by division, they grow exponentially with respect to time. That is, if the irradiation is delayed, the number of bacteria to be killed (initial number of bacteria) grows exponentially with respect to the elapsed time. Since the number of bacteria to be maintained to suppress visible stains should be below a predetermined value, if the initial number of bacteria increases, the integrated irradiance required to reduce the number of bacteria below the predetermined value also increases. By starting the light irradiation at the earliest possible timing after the bacteria adhere, the number of bacteria can be reduced to below the predetermined value (or the number of bacteria can be kept below the predetermined value) with a smaller integrated irradiance, and the occurrence of visible stains can be suppressed.

[0063] Therefore, in the present embodiment, the common irradiation unit 600 simultaneously irradiates the nozzle storage unit 470 and the bowl unit 801 with sterilizing light.

[0064] FIG. 6 is a cross-sectional view showing an example of a toilet device according to the embodiment. FIG. 6 is a cross-sectional view taken at the position of line A1 - A2 shown in FIG. 5(b). As shown in FIG. 6, the sanitary washing device 100 includes an irradiation unit 600 that irradiates sterilizing light, which is light having a sterilizing effect. The sterilizing effect is, for example, an effect of suppressing the growth of bacteria.

[0065] By irradiating with sterilizing light, at least a part of the bacteria adhering to the target can be killed or inactivated, thereby suppressing (sterilizing) the growth of bacteria. The wavelength of the sterilizing light is 250 nm to 480 nm. The sterilizing light preferably contains, for example, ultraviolet rays. As a result of the study by the present inventors, it has been found that by irradiating light having a wavelength in the vicinity of 250 nm to 300 nm, the DNA of bacteria, molds, etc. can be rewritten and inactivated so that they cannot grow. Also, by irradiating light having a wavelength in the vicinity of 300 to 480 nm, the light acts on the moisture in the body of bacteria, molds, etc. to generate reactive oxygen species, and it has been found that the bacteria can be killed or inactivated by the reactive oxygen species. Incidentally, the present inventors have confirmed that hydrogen peroxide is generated in tap water by irradiating light having a wavelength of 365 nm. This means that hydrogen peroxide is generated in water during the process of radical generation. Also, the present inventors have confirmed that bacteria in water can be sterilized by irradiating light having a wavelength of 300 nm to 480 nm to the bacteria in water. In this example, the irradiation unit 600 is provided on the back surface of the toilet lid 300.

[0066] The irradiation unit 600 has, for example, at least one light-emitting unit (light emitter). The number of light-emitting units included in the irradiation unit 600 may be one or a plurality. The light-emitting unit is, for example, an LED (Light Emitting Diode). The light-emitting unit is not limited to an LED, and may be, for example, an LD (Laser Diode), an OLED (Organic Light Emitting Diode), or the like. Also, instead of the light-emitting element, a cold cathode tube or a hot cathode tube may be used. The light-emitting unit is connected to the control unit 405 shown in FIG. 2 via a substrate, for example, and turns on and off based on the control of the control unit 405. The control unit 405 controls the operation of the irradiation unit 600 by controlling the turning on and off of the light-emitting unit. Also, the control unit 405 may control the total luminous flux of the light-emitting unit by adjusting the voltage applied to the light-emitting unit, for example.

[0067] In Fig. 6, the illumination unit 600 irradiates the nozzle storage unit 480 and the bowl unit 801 with sterilizing light having a sterilizing effect toward the bowl unit 801. By irradiating the sterilizing light, the growth of bacteria in the nozzle storage unit 480 and the bowl unit 801 is suppressed. Also, thereby, the generation of dirt in the nozzle storage unit 480 and the bowl unit 801 is suppressed. The illumination unit 600 irradiates the sterilizing light to at least a part of the nozzle storage unit 480 and at least a part of the bowl unit 801. The illumination unit 600 may irradiate the entire nozzle storage unit 480 with the sterilizing light. The illumination unit 600 may irradiate the entire bowl unit 801 with the sterilizing light.

[0068] For example, when the light emitting unit is a germicidal lamp (that is, when the sterilizing light is germicidal rays), the minimum integrated irradiance necessary for suppressing the growth of bacteria that may exist in the toilet device 1 is 5 mJ / cm 2 2. The germicidal rays are ultraviolet rays with a wavelength of around 260 nm. If the sterilizing light with an integrated irradiance of 5 mJ / cm 2 2 or more is irradiated from the light emitting unit to the nozzle storage unit 480 and the bowl unit 801, it is possible to suppress the growth of bacteria and the generation of dirt.

[0069] As shown in Fig. 6, by irradiating the sterilizing light from the common illumination unit 600 to the nozzle storage unit 480 and the bowl unit 801, an increase in cost can be prevented. Also, by irradiating the sterilizing light to the nozzle storage unit 480 and the bowl unit 801 simultaneously, the irradiation of the sterilizing light can be started in a state where the number of bacteria attached to the nozzle storage unit 480 and the bowl unit 801 is as small as possible. Therefore, the integrated irradiance necessary for suppressing the growth of bacteria can be reduced. When the irradiance is the same, starting the irradiation simultaneously rather than irradiating in order can reach a predetermined integrated irradiance with a short-time irradiation, and it becomes possible to suppress the growth of bacteria. Therefore, while preventing an increase in cost due to an increase in the illumination unit 600, the growth of bacteria in the nozzle storage unit 480 and the bowl unit 801 can be suppressed by irradiating the sterilizing light for a short time. Thereby, the generation of dirt can be suppressed, and a highly hygienic sanitary cleaning device 100 (toilet device 1) can be provided.

[0070] As described above, when the sterilizing light is the germicidal ray, the integrated irradiance required for suppressing the growth of bacteria is 5 mJ / cm 2 or more. Since the integrated irradiance is the product of the irradiance and the irradiation time, for example, when suppressing the growth of bacteria over 1.4 hours, an irradiance of 1 μW / cm 2 or more is required. The irradiance can be measured using, for example, an ultraviolet integrated light meter C9536 / H9535 (Hamamatsu Photonics K.K.) if the wavelength of the sterilizing light is in the range of 250 to 300 nm, an ultraviolet integrated light meter C9536 / H9958 (Hamamatsu Photonics K.K.) if the wavelength of the sterilizing light is in the range of 300 to 410 nm, or an ACCU-CALTM 50-LED UV illuminometer (Dymax Corporation) if the wavelength of the sterilizing light is in the range of 350 to 450 nm. The irradiance can be measured, for example, by a method conforming to JIS Z 8000-7:2022.

[0071] Furthermore, it is preferable that the average value of the irradiance on the inner surface of the nozzle housing portion 480 irradiated with the sterilizing light is greater than the average value of the irradiance on the surface of the bowl portion 801 irradiated with the sterilizing light.

[0072] The inner surface of the nozzle housing portion 480 is the surface of the inner wall 481 of the nozzle housing portion 480. When a nozzle lid 483 (see FIG. 9) that can be opened and closed is provided at the opening 482 of the nozzle housing portion 480, the nozzle lid 483 constitutes a part of the nozzle housing portion 480. In this case, the back surface (the rear side surface) of the nozzle lid 483 is also included in the inner surface of the nozzle housing portion 480. The surface of the bowl portion 801 refers to the surface of the portion shaded in FIG. 4(b) as described above.

[0073] The average value of the irradiance is a value obtained by measuring and calculating the value of the irradiance irradiated per unit partition area (for example, a 1 mm × 1 mm partition) when the calculation target surface (the inner surface of the nozzle housing portion 480 or the surface of the bowl portion 801) is divided into a certain partition area, and dividing the sum of the measured irradiances by the number of partitions. For measuring the irradiance per unit partition area, a measuring instrument such as an ultraviolet integrated light meter C9536 / H9958 (Hamamatsu Photonics K.K.) may be used.

[0074] Of the objects irradiated with the sterilizing light, the nozzle storage portion 480 is inside the casing 400, and the bowl portion 801 is outside the casing 400. The bowl portion 801 is cleaned every time the toilet device 1 (toilet bowl 800) is used by the user. On the other hand, for example, when a man urinates standing up, the nozzle 473 is not used, so the nozzle 473 and the nozzle storage portion 480 are not cleaned. That is, in the bowl portion 801, since bacteria are washed away by cleaning every time the toilet device 1 is used, the number of bacteria tends to decrease. In contrast, in the nozzle storage portion 480, since it may not be cleaned even when the toilet device 1 is used, the number of bacteria is difficult to decrease. Therefore, the number of bacteria in the nozzle storage portion 480 may be larger than that in the bowl portion 801. As the number of bacteria increases, the integrated irradiance required to suppress the growth of bacteria increases. Therefore, by making the average value of the irradiance on the inner surface of the nozzle storage portion 480 irradiated with the sterilizing light larger than the average value of the irradiance on the surface of the bowl portion 801 irradiated with the sterilizing light, the sterilization intensity in the nozzle storage portion 480 where the number of bacteria is more likely to be larger than that in the bowl portion 801 can be made stronger than the sterilization intensity in the bowl portion 801. Therefore, the growth of bacteria in the nozzle storage portion 480 and the bowl portion 801 can be efficiently suppressed. Thereby, the generation of dirt in the nozzle storage portion 480 and the bowl portion 801 can be efficiently suppressed.

[0075] The average value of the irradiance on the inner surface of the nozzle storage portion 480 irradiated with the sterilizing light is, for example, 4 μW / cm 2 or more and 100 mW / cm 2 or less. The average value of the irradiance on the surface of the bowl portion 801 irradiated with the sterilizing light is, for example, 1 μW / cm 2 or more and 25 mW / cm 2 or less.

[0076] FIG. 7 is a cross-sectional view showing an example of the toilet device according to the embodiment. FIG. 7 is a cross-sectional view at the position of the line A1 - A2 shown in FIG. 5(b). As shown in FIG. 7, it is desirable that the common irradiation unit 600 for irradiating the nozzle storage unit 480 and the bowl unit 801 with sterilizing light be provided inside the casing 400.

[0077] As described above, compared with the bowl unit 801, the nozzle storage unit 480 has fewer cleaning times and there is a possibility that the number of bacteria increases. When the number of bacteria increases, the integrated irradiance required to suppress the growth of bacteria increases. Generally, for light sources other than lasers, the irradiance emitted from the light source increases as the distance is closer. By providing the irradiation unit 600 inside the casing 400, it becomes possible to irradiate the nozzle storage unit 480 with a higher irradiance of sterilizing light than the bowl unit 801. Therefore, by providing the irradiation unit 600 inside the casing 400, even if the common irradiation unit 600 irradiates the nozzle storage unit 480, where the number of bacteria is likely to be larger than that of the bowl unit 801, and the bowl unit 801 with sterilizing light at the same time, the difference between the time required to reduce the number of bacteria in the nozzle storage unit 480 to a predetermined value or less and the time required to reduce the number of bacteria in the bowl unit 801 to a predetermined value or less can be reduced, so that the irradiation time of the sterilizing light can be shortened.

[0078] When the irradiation unit 600 is provided inside the casing 400 and the nozzle storage unit 480 and the bowl unit 801 are irradiated, it is preferable to irradiate the bowl unit 801 with sterilizing light through the opening 482 provided at the front end of the nozzle storage unit 480. The opening 482 is, for example, a portion surrounded by the bottom portion 481a, the side wall portion 481b, and the case cover 400b. Alternatively, the irradiation unit 600 may be provided inside the casing 400, and the bowl unit 801 may be irradiated with sterilizing light through the opening provided in the bottom portion 481a. At this time, the opening provided in the bottom portion 481a may be filled with a transparent material, and the bowl unit 801 may be irradiated with sterilizing light after passing through the transparent material. When a nozzle lid 483 capable of opening and closing the opening 482 is provided (see FIG. 9), the irradiation unit 600 may be provided inside the casing 400, and the bowl unit 801 may be irradiated with sterilizing light from the gap between the bottom portion 481a and the nozzle lid 483.

[0079] Furthermore, it is desirable that the average value of the irradiance on the surface of the rear portion 801b of the bowl irradiated with the sterilizing light be greater than the average value of the irradiance on the surface of the front portion 801a of the bowl irradiated with the sterilizing light.

[0080] FIGS. 8(a) and 8(b) are explanatory views of the front portion and the rear portion of the bowl of the toilet device according to the embodiment. FIG. 8(a) is a cross-sectional view taken at the position of the line A1-A2 shown in FIG. 5(b). As shown in FIGS. 8(a) and 8(b), the bowl portion 801 is divided into a front portion 801a and a rear portion 801b of the bowl with respect to the anus washing position ОW. The anus washing position ОW is the point where a straight line along the discharge direction of the water W discharged from the anus washing discharge port 474b in a state where the nozzle 473 has advanced to the maximum length and the extension surface S1 of the upper surface 806 of the rim portion 805 intersect. The anus washing position ОW corresponds to the general position of the anus when the user sits on the toilet seat 200. In FIGS. 8(a) and 8(b), a vertical plane S2 orthogonal to the extension surface S1 and the anus washing position ОW is shown. The front portion 801a of the bowl is the portion of the bowl portion 801 located in front of the vertical plane S2 (anus washing position ОW). The rear portion 801b of the bowl is the portion of the bowl portion 801 located behind the vertical plane S2 (anus washing position ОW).

[0081] The user sitting on the toilet seat 200 defecates in a forward-leaning posture. Then, the organic matter contained in the feces is likely to adhere to the rear part 801b of the bowl, which is located behind the anus washing position OW. That is, compared with the front part 801a of the bowl, the rear part 801b of the bowl is more likely to have organic matter that serves as food for bacteria attached, creating an environment where bacteria are likely to grow, so the initial number of bacteria increases. As described above, if the initial number of bacteria increases, the cumulative irradiance required to reduce the number of bacteria to a predetermined value or less also increases. Therefore, by making the average value of the irradiance on the surface of the rear part 801b of the bowl irradiated with antibacterial light larger than the average value of the irradiance on the surface of the front part 801a of the bowl irradiated with antibacterial light, the antibacterial intensity in the rear part 801b of the bowl, where the initial number of bacteria is more likely to be larger than that in the front part 801a of the bowl, can be made stronger than the antibacterial intensity in the front part 801a of the bowl. Therefore, the growth of bacteria in the front part 801a and the rear part 801b of the bowl can be efficiently suppressed. As a result, even if antibacterial light is simultaneously irradiated from the common irradiation unit 600 to the rear part 801b of the bowl, where the initial number of bacteria is more likely to be larger than that in the front part 801a of the bowl, and the front part 801a of the bowl, the difference between the time required to reduce the number of bacteria to a predetermined value or less in the rear part 801b of the bowl and the time required to reduce the number of bacteria to a predetermined value or less in the front part 801a of the bowl can be reduced, so the irradiation time of the antibacterial light can be shortened, and the generation of dirt in the bowl part 801 can be efficiently suppressed.

[0082] Note that the specific configurations of the nozzle storage part 480 and the irradiation part 600 can be appropriately changed.

[0083] FIG. 9 is a cross-sectional view showing an example around the local cleaning nozzle of the toilet device according to the embodiment. As shown in FIG. 9, the nozzle storage portion 480 may be provided with a nozzle lid 483 that can open and close the opening 482 of the nozzle storage portion 480. The nozzle lid 483, for example, is in an open state when the nozzle 473 extends and in a closed state when the nozzle 473 retracts. Also, the illumination unit 600 may be installed inside the casing 400 and provided above the front end of the nozzle 473. By providing the illumination unit 600 inside the casing 400 above the front end of the nozzle 473, it becomes possible to irradiate the back surface (the rear side surface) of the nozzle lid 483 with sterilizing light, and it is possible to efficiently irradiate the nozzle storage portion 480 and the bowl portion 801 with sterilizing light.

[0084] FIG. 10 is a cross-sectional view showing an example of the vicinity of the local cleaning nozzle of the toilet device according to the embodiment. As shown in FIG. 10, the nozzle storage portion 480 may be provided with a nozzle lid 483 that can open and close the opening 482 of the nozzle storage portion 480. Also, the illumination unit 600 may be installed inside the casing 400 and provided between the nozzle 473 and the bottom 481a of the nozzle storage portion 480. The locations where dirt is likely to occur are, for example, locations where water is likely to remain. Examples of locations where water is likely to remain include the bottom 481a of the nozzle storage portion 480 where water droplets slide and accumulate, the end 481c of the nozzle storage portion 480 where water tends to stay due to surface tension, and the lower back surface 483a of the nozzle lid 483. By installing the illumination unit 600 between the nozzle 473 and the bottom 481a, it is possible to efficiently irradiate locations where water is likely to remain and dirt is likely to occur with sterilizing light.

[0085] FIGS. 11(a) and 11(b) are a cross-sectional view and a front view showing an example of the vicinity of the local cleaning nozzle of the toilet device according to the embodiment. FIG. 11(b) shows a state in which the case cover 400b and the nozzle lid 483 are removed. As shown in FIGS. 11(a) and 11(b), the nozzle storage portion 480 may be provided with a nozzle lid 483 that can open and close the opening 482 of the nozzle storage portion 480. Further, the illumination unit 600 may be installed on the side of the nozzle 473. By installing the illumination unit 600 on the side of the nozzle 473, as in the example shown in FIG. 10, it is possible to efficiently irradiate the areas where water is likely to remain and dirt is likely to occur with sterilizing light.

[0086] Further, it is preferable that a gap such as the opening 482 is provided between the illumination unit 600 and the bowl portion 801. By providing the gap, the illumination unit 600 can irradiate the bowl portion 801 with sterilizing light passing through the gap.

[0087] FIG. 12 is a cross-sectional view showing an example of the periphery of the nozzle for local cleaning of the toilet device according to the embodiment. As shown in FIG. 12, a bottom portion 481a may not be provided below the tip of the nozzle 473. That is, at least a part of the bottom portion 481a located below the nozzle storage portion 480 may be cut out. Further, the bottom portion 481a may not be provided. By not providing the bottom portion 481a below the tip of the nozzle 473, it is possible to efficiently irradiate the portion of the bowl portion 801 located directly below the casing 400 with sterilizing light.

[0088] In this example, the case plate 400a is located below the nozzle and has a first portion 491 extending in the front-rear direction and a second portion 492 extending downward from the front end of the first portion 491. The second portion 492 constitutes a part of the inner wall 481 of the nozzle storage portion 480. A part of the sterilizing light irradiated from the illumination unit 600 is irradiated onto the second portion 492.

[0089] FIG. 13 is an explanatory view showing an example of the periphery of the nozzle lid of the toilet device according to the embodiment. As shown in FIG. 13, with the nozzle lid 483 in the closed state, by irradiating the nozzle storage part 480 and the bowl part 801 with sterilizing light from the illumination part 600 in the casing 400, it is possible to make the vicinity of the nozzle lid 483 glow in a state visible to the user. In this case, the illumination part 600 irradiates the bowl part 801 (below the rim part 805) with sterilizing light for suppressing the growth of bacteria, and irradiates light (for example, sterilizing light) for making it visible to the user upward of the rim part 805. The light for making it visible to the user is emitted directly upward of the rim part 805 from the vicinity of the nozzle lid 483, for example. The luminous flux of the light for making it visible to the user (the luminous flux of the light emitted upward of the rim part 805) is preferably smaller than the luminous flux of the light emitted toward the bowl part 801 (the luminous flux of the light emitted below the rim part 805). The luminous flux of the light for making it visible to the user (the luminous flux of the light emitted upward of the rim part 805) may be 0.

[0090] The total sum of the luminous fluxes of all the light emitted from the illumination part 600 is defined as the total luminous flux, and the unit of the luminous flux is [W]. "Visibility" means that the light reaches the user's eyes. Also, the intensity of the light irradiated on the surface of the bowl part 801 is represented by the irradiance obtained by dividing the luminous flux by the area. The human eye can perceive even an extremely small amount of irradiance. Therefore, the irradiance required for visibility may be smaller than the irradiance required for suppressing the growth of bacteria. Thus, by making the luminous flux of the light emitted directly upward of the rim part 805 from the vicinity of the nozzle lid 483 for making it visible smaller than the luminous flux of the light emitted toward the bowl part 801, it is possible to efficiently suppress dirt while making it visible to the user.

[0091] A transparent or translucent material can be used for the whole or a part of the nozzle lid 483. Examples of the material in that case include polypropylene, polycarbonate, acrylic, ABS (acrylonitrile, butadiene, styrene copolymer synthetic resin), PBT (polybutylene terephthalate), PET (polyethylene terephthalate), and the like.

[0092] The irradiation of germicidal light can be performed at any timing. The irradiation of germicidal light may be performed when there is no user in the toilet compartment, or it may be performed when there is a user in the toilet compartment. Further, the irradiation of germicidal light may be performed, for example, so that the accumulated irradiance of germicidal light that is equal to or greater than the accumulated irradiance required to reduce the number of bacteria to a predetermined value or less within a day is irradiated, and it may be performed continuously or intermittently.

[0093] The embodiment may include the following configuration.

[0094] (Configuration 1) A sanitary washing device installed on a toilet having a bowl portion for receiving excrement, having a water discharge port for discharging washing water toward the user's genital area, a genital washing nozzle that moves forward and backward, a casing having a nozzle storage portion capable of storing the genital washing nozzle in a state where the genital washing nozzle is retracted, an irradiation unit that irradiates germicidal light, which is light having a germicidal action, and comprising A sanitary washing device, characterized in that the irradiation unit simultaneously irradiates the germicidal light to the nozzle storage portion and the bowl portion.

[0095] (Configuration 2) The sanitary washing device according to Configuration 1, characterized in that an average value of the irradiance of the inner surface of the nozzle storage portion irradiated with the germicidal light is greater than an average value of the irradiance of the surface of the bowl portion irradiated with the germicidal light.

[0096] (Configuration 3) The sanitary washing device according to Configuration 1 or 2, characterized in that the irradiation unit is provided inside the casing.

[0097] (Configuration 4) The bowl portion has a rear bowl portion located behind the anal washing position and a front bowl portion located in front of the anal washing position, with reference to the anal washing position. The average irradiance of the surface of the rear part of the bowl irradiated with the sterilizing light is greater than the average irradiance of the surface of the front part of the bowl irradiated with the sterilizing light, and the sanitary cleaning device according to any one of Configurations 1 to 3.

[0098] (Configuration 5) A sanitary cleaning device according to any one of Configurations 1 to 4, the toilet bowl, and a toilet device provided with the same.

[0099] As described above, according to the embodiment, it is possible to provide a sanitary cleaning device and a toilet device that can suppress the growth of bacteria in the nozzle storage part and the bowl part by irradiating the sterilizing light for a short time while preventing an increase in cost due to an increase in the light irradiation part.

[0100] The embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. Regarding the above-described embodiments, those obtained by appropriately modifying the design by those skilled in the art are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, dimensions, material, arrangement, installation form, etc. of each element provided in the sanitary cleaning device and the toilet device are not limited to those illustrated and can be appropriately changed. In addition, each element provided in each of the above-described embodiments can be combined as long as it is technically possible, and those obtained by combining these are also included in the scope of the present invention as long as they include the features of the present invention.

Explanation of Reference Numerals

[0101] 1 Toilet device 10 Water supply source 20 Water guiding part 20a Pipeline 21 Anus cleaning flow path 22 Soft cleaning flow path 23 Video cleaning flow path 24 Surface cleaning flow path 25 Spraying flow path 100 Sanitary cleaning device 200 Toilet seat 204 Back surface 300 Toilet lid 400 Casing 400a Case Plate 400b Case Cover 401 Power Circuit 403 Human Detection Sensor 404 Seating Detection Sensor 405 Control Unit 431 Solenoid Valve 432 Pressure Regulating Valve 433 Check Valve 440 Heat Exchanger Unit 442 Flow Sensor 450 Electrolytic Cell Unit 452 Vacuum Breaker (VB) 454 Pressure Modulation Unit 471 Flow Adjustment Unit 472 Flow Path Switching Unit 473 Nozzle 473c Outer Peripheral Surface 474 Water Discharge Port 474a Buttock Washing Water Discharge Port 474b Anus Washing Water Discharge Port 476 Nozzle Motor 478 Nozzle Cleaning Unit 478a Water Discharge Part 479 Spray Nozzle 480 Nozzle Storage Part 481 Inner Wall 481a Bottom 481b Side Wall Part 481c End 482 Opening 483 Nozzle Cover 483a Lower Inner Surface 484 Nozzle Support Part 491 First Part 492 Second Part 500 Operation Part 600 Illumination Part 800 Toilet 801 Bowl Part 801w Standing Water 801a Front of Bowl 801b Rear of Bowl 802 Drainage Part 804 Receiving Part 805 Rim part 806 Upper surface 811 Water outlet ОW Anus washing position S1 Extension surface S2 Vertical plane

Claims

1. A sanitary cleaning device installed on a toilet having a bowl portion for receiving waste, comprising: a water discharge port for discharging cleaning water toward the user's genital area, and a local cleaning nozzle that moves forward and backward; a casing having a nozzle storage portion capable of storing the local cleaning nozzle in a state where the local cleaning nozzle is retracted; an irradiation unit that irradiates sterilizing light, which is light having a sterilizing effect; and comprising: simultaneously irradiating the sterilizing light from the irradiation unit to the nozzle storage portion and the bowl portion; The irradiation unit is provided inside the casing, and irradiates the entire bowl portion with the sterilizing light. A sanitary cleaning device characterized by this.

2. The average irradiance of the inner surface of the nozzle storage portion irradiated with the sterilizing light is greater than the average irradiance of the surface of the bowl portion irradiated with the sterilizing light. The sanitary cleaning device according to claim 1, characterized by this.

3. The bowl portion has a rear bowl portion located behind the anal cleaning position and a front bowl portion located in front of the anal cleaning position, with reference to the anal cleaning position. The average irradiance of the surface of the rear bowl portion irradiated with the sterilizing light is greater than the average irradiance of the surface of the front bowl portion irradiated with the sterilizing light. The sanitary cleaning device according to claim 1, characterized by this.

4. A sanitary cleaning device installed on a toilet having a bowl portion for receiving waste, comprising: a water discharge port for discharging cleaning water toward the user's genital area, and a local cleaning nozzle that moves forward and backward; a casing having a nozzle storage portion capable of storing the local cleaning nozzle in a state where the local cleaning nozzle is retracted; an irradiation unit that irradiates sterilizing light, which is light having a sterilizing effect; and comprising: simultaneously irradiating the sterilizing light from the irradiation unit to the nozzle storage portion and the bowl portion; The nozzle storage portion has a bottom portion located below the local cleaning nozzle. The irradiation unit is provided between the local cleaning nozzle and the bottom portion inside the casing, and irradiates the sterilizing light forward and downward. A sanitary cleaning device characterized by this.

5. A sanitary cleaning device installed on a toilet having a bowl portion for receiving waste, comprising: a water discharge port for discharging cleaning water toward the user's genital area, and a local cleaning nozzle that moves forward and backward; a casing having a nozzle storage portion capable of storing the local cleaning nozzle in a state where the local cleaning nozzle is retracted; An illumination unit that irradiates sterilizing light, which is light having a sterilizing effect; A toilet lid; Comprising: The illumination unit simultaneously irradiates the nozzle storage unit and the bowl unit with the sterilizing light; The illumination unit is provided on the back surface of the toilet lid and irradiates the entire bowl unit with the sterilizing light. A sanitary cleaning device characterized by this.

6. A toilet device comprising the sanitary cleaning device according to any one of Claims 1 to 5; The toilet; Comprising.

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