Toilet seat device

Abstract

To provide a toilet seat device which uses a filter while switching it between two filters including a photocatalyst filter with a simple configuration to enhance deodorization efficiency and improve a service life of the filter.SOLUTION: A deodorization device of a toilet seat device comprises: a channel having a first channel in which a first filter including a photocatalyst is arranged and a second channel in which a second filter different in kind from the first filter is arranged and whose pressure loss is greater than that of the first channel, the first channel and the second channel being provided in parallel therein; a lamp for radiating light to the photocatalyst; a fan for blowing air; and a storage tank which can store the first filter and water. The toilet seat device comprises: a water feeding part for feeding water to the storage tank; and a control part for performing first deodorization control for making air circulate in the first channel in a state where the storage tank doe not store water to perform deodorization by the first filter, and second deodorization control for making air circulate in the second channel in a state of suppressing circulation of the air in the first channel while storing water in the storage tank so that the first filter is immersed in the water, to perform deodorization by the second filter.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a toilet seat apparatus. [Background technology]

[0002] Conventionally, toilet seat devices have been proposed that include a deodorizing device that adsorbs and deodorizes odorous components. For example, Patent Document 1 describes a device that includes a deodorizing device with multiple adsorbents. Furthermore, Patent Document 2 describes a deodorizing device that includes two types of filters, an allergen filter and a deodorizer, arranged in a flow path, and a deodorizing device that further includes a switching device that switches the flow of air (odor). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-81829 [Patent Document 2] Japanese Patent Application Laid-Open No. 2005-336953 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, it is conceivable that a deodorizing device equipped with a photocatalytic filter containing a photocatalyst that can be regenerated by cleaning, and a deodorizing filter containing activated carbon or the like that cannot be regenerated but has relatively high deodorizing performance, and by switching between the two types of filters as needed, it is possible to improve deodorizing efficiency while extending the life of the filters. However, providing a switching means for switching between the filters and a cleaning means for cleaning the photocatalytic filter would complicate the structure, leading to an increase in the size and cost of the entire device.

[0005] The main object of the present disclosure is to improve deodorizing efficiency and extend the life of the filters by using two types of filters, including a photocatalytic filter, while switching between them in a simple configuration. [Means for solving the problem]

[0006] The present disclosure has adopted the following means to achieve the above-mentioned main object.

[0007] The toilet seat device of the present disclosure comprises: A toilet seat device equipped with a deodorizing device, The deodorizing device is a first filter having a photocatalyst and a second filter of a different type from the first filter; a lamp for irradiating the photocatalyst of the first filter with light; a flow path in which a first flow path in which the first filter is disposed and a second flow path in which the second filter is disposed and which has a larger pressure loss than the first flow path are provided in parallel inside the air intake port, and air taken in through an intake port flows through either the first flow path or the second flow path and is discharged from an exhaust port; a fan that blows air so that the air flows from the intake port toward the exhaust port; a storage tank provided in the first flow path, the storage tank accommodating the first filter and capable of storing water; Equipped with a water supply unit that supplies water to the storage tank; a control unit that executes a first deodorization control that controls the lamp, the water supply unit, and the fan to circulate air through the first flow path and deodorize with the first filter when no water is stored in the storage tank, and a second deodorization control that controls the water supply unit and the fan to circulate air through the second flow path and deodorize with the second filter when water is stored in the storage tank so that the first filter is immersed in water and air flow through the first flow path is suppressed; The gist of the project is to provide the following:

[0008] The toilet seat device of the present disclosure performs a first deodorization control in which air is circulated through the first flow path while no water is stored in the storage tank of the first filter, thereby deodorizing with the first filter, and a second deodorization control in which water is stored in the storage tank so that the first filter is immersed in water, thereby restricting air flow through the first flow path, thereby deodorizing with the second filter, thereby allowing air to circulate through the second flow path while the storage tank is immersed in water. This allows the air flow to be switched from the first flow path to the second flow path, and the photocatalyst to be cleaned and regenerated. Therefore, with a simple configuration that does not require separate flow path switching means and photocatalyst cleaning means, switching between two types of filters can be used to improve deodorizing efficiency and extend the life of the filters.

[0009] In the toilet seat apparatus of the present disclosure, the second filter may have a larger pressure loss and a higher deodorizing performance than the first filter, the first flow path may be configured to prevent air from passing through when the storage tub is filled with water, and the second flow path may be provided with a throttle portion that throttles the air flow. In this way, in the second deodorizing control, air is reliably passed through the second flow path, allowing efficient deodorization by the second filter. Furthermore, in the first deodorizing control, the pressure loss of the second filter and the throttle portion of the second flow path have a synergistic effect, encouraging air to pass through the first flow path and causing deodorization by the first filter, thereby reducing the usage time of the second filter.

[0010] In the toilet seat device of the present disclosure, the storage tub may be configured to constantly discharge a predetermined amount of water into the toilet bowl of the toilet, and the control unit may control the water supply unit to supply water to the storage tub at a rate exceeding the predetermined amount of water discharge in order to start the second deodorizing control when the user starts using the toilet seat device, to supply water to the storage tub at a rate that makes up for the predetermined amount of water discharge during the second deodorizing control, and to stop supplying water to the storage tub when the second deodorizing control ends. This allows for quick switching between storing water in the storage tub (immersing the first filter) and releasing the water storage (immersion) with a simple configuration.

[0011] In the toilet seat device of the present disclosure, the control unit may be configured to turn off the lamp, end the first deodorization control, and start the second deodorization control when a user starts using the toilet seat device, and when a predetermined time has passed since the user has finished using the toilet seat device, end the second deodorization control, turn on the lamp, and start the first deodorization control. In this way, the lamp is only turned on while the first deodorization control is being executed, allowing appropriate deodorization by the first filter.

[0012] The toilet seat device of the present disclosure may include a flushing nozzle that sprays wash water onto a human private part, the water supply unit being configured to be able to switch the water supply destination between the flushing nozzle and the storage tub, and the control unit controlling the water supply unit to supply water to the storage tub when the second deodorization control is started, and controlling the water supply unit to supply water to the flushing nozzle when an instruction to wash a human private part is given during the second deodorization control. In this way, the water supply unit can be shared for both washing a human private part and supplying water to the storage tub, thereby achieving a simple configuration and preventing the device from becoming large. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is an external perspective view of a toilet 1 to which a cleaning toilet seat device 10 is attached. [Figure 2] FIG. 1 is a diagram illustrating the configuration of a toilet seat cleaning device 10. [Figure 3] 10 is a flowchart illustrating an example of a deodorization process. [Figure 4] 10 is a time chart showing an example of a deodorizing process being performed. [Figure 5] FIG. 10 is an explanatory diagram showing the state of air flow when in-use deodorization control is performed. [Figure 6] 10 is an explanatory diagram showing the state of air flow when deodorization control is performed when the appliance is not in use. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] Next, an embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is an external perspective view of a toilet 1 to which a cleaning toilet seat device 10 is attached. Fig. 2 is a configuration diagram of the cleaning toilet seat device 10. The toilet 1 is a Western-style toilet, and the cleaning toilet seat device 10 is installed on the upper surface of the toilet 1.

[0015] 1, the cleaning toilet seat device 10 comprises a toilet seat device main body 11 installed behind the toilet bowl 1, a toilet seat 12 rotatably supported on the toilet seat device main body 11, a toilet lid 13 rotatably supported on the toilet seat device main body 11, and an operation panel 14 operated by the user. The cleaning toilet seat device 10 also comprises, in the toilet seat device main body 11, a nozzle unit 20 having cleaning nozzles 21 such as a rear washing nozzle or a bidet washing nozzle for washing the user's private parts, a deodorizing unit 30 for deodorizing odors, and a control unit 50 for controlling the cleaning toilet seat device 10 as a whole.

[0016] The nozzle unit 20 includes a water supply valve 23 that switches the flow of water through a water supply channel 22 connected to a water supply source, a heater 24 that heats the cleansing water that has passed through the water supply valve 23, and a switching valve 25 that can switch the supply destination of the cleansing water output from the heater 24 and adjust the amount of water supplied. The heater 24 is, for example, a ceramic heater that instantaneously heats the cleansing water and has a rated output of, for example, 1500 W. The switching valve 25 is configured to selectively supply cleansing water to one of a posterior cleansing supply channel 26a that supplies cleansing water to the cleansing nozzle 21 for posterior cleansing, a bidet cleansing supply channel 26b that supplies cleansing water to the cleansing nozzle 21 for bidet cleansing, and a photocatalyst supply channel 26c that supplies cleansing water to a photocatalyst filter 44 (described later) of the deodorizing unit 30. In addition, the nozzle unit 20 also includes a nozzle drive unit that moves each cleaning nozzle 21 back and forth, a flow rate sensor that detects the flow rate of the cleaning water, and a temperature sensor that detects the temperature of the cleaning water heated by the heater 24.

[0017] The deodorizing unit 30 deodorizes air (odor) that is drawn in through an air intake 31a, flows through a cylindrical flow path 31, and is discharged through an air exhaust 31b. In this embodiment, the flow path 31 is formed so that the air intake 31a opens into the toilet bowl of the toilet 1, for example, and the air exhaust 31b opens into the toilet room in which the toilet 1 is installed. The deodorizing unit 30 includes an activated carbon filter 42, a photocatalytic filter 44, an LED lamp 46, and a fan 48 within the flow path 31.

[0018] The activated carbon filter 42 is a filter in which activated carbon is supported on a substrate, and is capable of adsorbing and removing odorous components such as ammonia and hydrogen sulfide using the activated carbon. The photocatalytic filter 44 is a filter in which a photocatalyst, such as titanium oxide, is supported on a substrate, and is capable of decomposing and removing odorous components when irradiated with light such as ultraviolet light from the LED lamp 46. The activated carbon filter 42 has a higher pressure loss and higher deodorizing performance than the photocatalytic filter 44, and is formed to have, for example, a pressure loss that is approximately twice that of the photocatalytic filter 44. Although not particularly limited, for example, the pressure loss of the activated carbon filter 42 is 80 to 90 Pa, and the pressure loss of the photocatalytic filter 44 is 40 to 50 Pa. The pressure loss of the activated carbon filter 42 may be more than twice that of the photocatalytic filter 44. Furthermore, the lamp that irradiates light onto the photocatalytic filter 44 is not limited to the LED lamp 46, and may be a halogen lamp, a fluorescent lamp, or the like. The fan 48 draws air into the flow path 31 through the intake port 31a and blows the air out through the exhaust port 31b.

[0019] Furthermore, a partition wall 32 extending along the air flow direction (the left-right direction and the axial direction in FIG. 2 ) is provided in a portion of the flow path 31 of the deodorizing unit 30 upstream of the fan 48. In this embodiment, a portion of the flow path 31 is divided into upper and lower sections by the partition wall 32, with the upper section being an activated carbon flow path (activated carbon filter flow path) 33 in which an activated carbon filter 42 is arranged, and the lower section being a photocatalyst flow path (photocatalyst filter flow path) 35 in which a photocatalyst filter 44 is arranged. In this manner, the activated carbon filter 42 and the photocatalyst filter 44 are arranged in parallel within the flow path 31. Therefore, air taken in through the intake port 31a passes through either the activated carbon filter 42 of the activated carbon flow path 33 or the photocatalyst filter 44 of the photocatalyst flow path 35 before being discharged from the exhaust port 31b.

[0020] The activated carbon flow path 33 has a flow path area at the outlet on the downstream side (the outlet side, the fan 48 side) narrowed by a narrowing wall 34 extending from the inner wall surface of the flow path 31 toward the partition wall 32. In the photocatalyst flow path 35, for example, two photocatalytic filters 44 are arranged side by side along the flow direction, and partition walls 36 and 37 extending from the inner wall surface of the flow path 31 toward the partition wall 32 are provided on the upstream and downstream sides, respectively. The partition wall 32 has an extension wall 32a extending downward between the two photocatalytic filters 44 from the surface on the photocatalyst flow path 35 side (the bottom surface in FIG. 2 ). Therefore, the photocatalytic filter 44 on the intake port 31a side is arranged so as to be sandwiched between the upstream partition wall 36 and the extension wall 32a, and the photocatalytic filter 44 on the exhaust port 31b side is arranged so as to be sandwiched between the extension wall 32a and the downstream partition wall 37. Therefore, the air flowing through the photocatalyst flow path 35 flows sequentially between the partition wall 36 and the partition wall 32, through the photocatalyst filter 44 on the intake port 31a side, below the extension wall 32a, through the photocatalyst filter 44 on the exhaust port 31b side, and between the partition wall 37 and the partition wall 32. Two LED lamps 46 are attached to the surface of the partition wall 32 on the photocatalyst flow path 35 side (the lower surface in FIG. 2) so as to face each photocatalyst filter 44.

[0021] Additionally, the photocatalyst flow path 35 is provided with a storage tank (storage tank) 38, which is configured to accommodate two photocatalyst filters 44 and store water (cleaning water), by a portion of the inner wall of the flow path 31 and partition walls 36 and 37. The bottom of the storage tank 38 is connected to the photocatalyst supply path 26c, and cleaning water is supplied from the photocatalyst supply path 26c. The cleaning water supplied to the storage tank 38 from the photocatalyst supply path 26c is stored so as to immerse the photocatalyst filter 44, thereby cleaning the photocatalyst filter 44. Furthermore, when cleaning water is stored in the storage tank 38 above the lower end of the extension wall 32a and the photocatalyst filter 44 is immersed, air cannot circulate through the photocatalyst flow path 35. A drainage path 39 is connected to the bottom of the storage tank 38, and cleaning water in the tank is discharged through the drainage path 39 into the toilet bowl of the toilet 1. The drainage channel 39 has a smaller cross-sectional area than the photocatalyst supply channel 26c, and constantly discharges flush water from the storage tank 38 into the toilet bowl.

[0022] The operation panel 14 is provided with a rear wash switch for instructing rear wash, a bidet wash switch for instructing bidet wash, a stop switch for instructing stopping of wash, a temperature adjustment switch for adjusting the temperature of the wash water, and a deodorization switch for instructing whether or not deodorization operation is performed by the deodorizing unit 30.

[0023] The control unit 50 is configured as a microcomputer centered around a CPU 52, and in addition to the CPU 52, it is equipped with a ROM 54, a RAM 56, a timer 58, input / output ports, etc. As shown in Fig. 2, the control unit 50 receives inputs such as operation signals from the operation panel 14, detection signals from a human body detection sensor 15 that detects a human body (user) in the toilet room, and detection signals from a seating detection sensor 16 that detects whether a user is sitting on the toilet seat 12 via input ports. In addition, the control unit 50 outputs drive signals to the heater 24 and switching valve 25 of the nozzle unit 20 and the drive unit of the cleaning nozzle 21, as well as drive signals to the LED lamp 46 and fan 48 of the deodorizing unit 30 via output ports.

[0024] Next, the operation of the deodorizing unit 30 of the thus configured toilet seat cleaning device 10 will be described. Fig. 3 is a flowchart showing an example of the deodorizing process. This process is executed by the CPU 52 of the control unit 50 when the deodorizing switch is on (deodorizing operation is on). Fig. 4 is a time chart showing an example of the deodorizing process. Fig. 4 shows the time progression of the amount of water stored in the storage tank 38 of the photocatalytic filter 44, the amount of water supplied to the storage tank 38, and the on / off status of the LED lamp 46.

[0025] 3, the CPU 52 of the control unit 50 first starts driving the fan 48 to blow (suck) a constant amount of air (S100), and determines whether a user has been detected based on a detection signal from the human body detection sensor 15 (S110) and whether non-use deodorization (first deodorization control) is in progress (S120). If the CPU 52 determines in S110 that a user has not been detected and determines in S120 that non-use deodorization is in progress, the process returns to S110. If the CPU 52 determines in S120 that non-use deodorization is not in progress, the process proceeds to S220 and starts non-use deodorization, details of which will be described later.

[0026] On the other hand, when the CPU 52 determines in S110 that a user has been detected, it controls the switching valve 25 to switch the supply destination of cleaning water to the photocatalyst supply path 26c, thereby supplying water to the storage tank 38 of the photocatalyst filter 44, and turns off the LED lamp 46 (S130, time t0 in FIG. 4). In S130, water is supplied at a maximum water supply rate (100%) that exceeds the predetermined drainage rate of the drainage path 39 per unit time so that the storage tank 38 is quickly filled with water.

[0027] As a result, the amount of water stored in the storage tank 38 increases (times t0 to t1 in FIG. 4), and the photocatalytic filter 44 is immersed in water, preventing air (odor) from flowing through the photocatalyst flow path 35. Therefore, as shown in FIG. 5, the air (odor) drawn in from the air intake 31a flows through the activated carbon flow path 33 (solid arrow in FIG. 5), and in-use deodorization control (second deodorization control) is initiated, in which the odor is quickly removed by the activated carbon filter 42. In this way, by supplying cleaning water to the storage tank 38 and immersing the photocatalytic filter 44, the flow path within the flow path 31 is switched from the photocatalyst flow path 35 to the activated carbon flow path 33, and deodorization is performed by the activated carbon filter 42. Note that in S130, room-temperature cleaning water may be supplied to the storage tank 38 without driving the heater 24, or heated cleaning water may be supplied to the storage tank 38 by driving the heater 24. In the latter case, the effect of cleaning the photocatalytic filter 44 can be enhanced compared to the former case, and therefore the effect of restoring the deodorizing performance (removal performance) of the photocatalytic filter 44 by cleaning can be enhanced.

[0028] When the supply of cleaning water to fill the storage tank 38 is completed, the CPU 52 replenishes (supplies) the amount of water to be drained so as to maintain the immersion of the photocatalytic filter 44 (the amount of water stored in the storage tank 38) (S140, time t1 in FIG. 4). As described above, the storage tank 38 constantly drains cleaning water from the drainage channel 39. Therefore, during in-use deodorization, the immersion of the photocatalytic filter 44 is maintained by replenishing the amount of water to be drained in S140. Next, the CPU 52 determines whether or not a local cleaning has been instructed based on an operation signal from the operation panel 14 (S150), and if it determines that a local cleaning has not been instructed, the process proceeds to S190.

[0029] When the CPU 52 determines in S150 that a private parts washing has been instructed, it controls the switching valve 25 to switch the supply destination of the cleansing water to the supply channel for private parts washing (S160). In S160, the CPU 52 controls the switching valve 25 to switch to the private parts washing supply channel 26a if a private parts washing has been instructed, and controls the switching valve 25 to switch to the bidet parts washing supply channel 26b if a bidet part washing has been instructed. As a result, cleansing water is no longer replenished to the storage tank 38 of the photocatalytic filter 44, and the amount of water stored in the storage tank 38 decreases (times t2 to t3 in FIG. 4). Note that even if the amount of water stored in the storage tank 38 decreases, the amount of stored water does not immediately become zero. Because air does not easily flow through a wet photocatalytic filter 44, the air (odor) flows through the activated carbon flow channel 33 and is deodorized.

[0030] The CPU 52 then waits for the local cleaning to finish (S170), and when it determines that the local cleaning has finished, it controls the switching valve 25 to switch the supply destination of the cleaning water to the photocatalyst supply path 26c, thereby restarting the supply of water to the storage tub 38 (S180). In S180, as in S130, the maximum amount of water (100%) is supplied so that the storage tub 38 is quickly filled with water (times t3 to t4 in FIG. 4). The time from times t3 to t4 can be calculated as the time required to replenish the amount of water discharged from the storage tub 38 during the local cleaning from times t2 to t3. Next, the CPU 52 determines whether the user has left their seat based on a detection signal from the seat detection sensor 16 (S190), and if it determines that the user has not left their seat, it returns to S140 and repeats the process.

[0031] On the other hand, if the CPU 52 determines in S190 that a seating error has been detected, it starts counting the time since seating error using the timer 58 (S200) and waits until the time since seating error reaches a predetermined time (S210). The predetermined time is set to a few minutes, such as one minute. If the CPU 52 determines that the time since seating error has reached the predetermined time, it stops the water supply to the storage tank 38 of the photocatalytic filter 44 and turns on the LED lamp 46 (S220, time t5 in FIG. 4), and returns to S110. When the water supply to the storage tank 38 is stopped, the water stored in the storage tank 38 is drained through the drainage channel 39, gradually reducing the amount of water stored in the storage tank 38. Furthermore, when the photocatalytic filter 44 dries and the pressure loss magnitude relationship returns to normal, air (odor) primarily flows through the photocatalyst flow path 35 (solid arrow in FIG. 6) and is less likely to flow through the activated carbon flow path 33, which has a large pressure loss (dotted arrow in FIG. 6). In this way, when the deodorization during non-use, which mainly uses the photocatalytic filter 44, has started, the CPU 52 returns to S110 and repeats the process.

[0032] The above-described cleansing toilet seat device 10 performs deodorization control during non-use (first deodorization control) in which air is circulated through the photocatalyst flow path 35 when the storage tub 38 is empty, thereby deodorizing with the photocatalytic filter 44, and deodorization control during use (second deodorization control) in which air is circulated through the activated carbon flow path 33 when the storage tub 38 is filled with water so that the photocatalytic filter 44 is immersed in water, thereby deodorizing with the activated carbon filter 42. As a result, by storing water in the storage tub 38, the flow path through which air flows can be switched, and the photocatalytic filter 44 can be cleaned to remove products produced during odor decomposition, thereby restoring deodorizing performance. Therefore, with a simple configuration that does not require separate means for switching between the flow paths and means for cleaning the photocatalyst filter 44 (means for supplying flushing water), it is possible to appropriately switch between the two types of filters, thereby improving deodorizing efficiency and extending the filter's lifespan.

[0033] The activated carbon filter 42 has a larger pressure loss and better deodorizing performance than the photocatalytic filter 44, but cannot be regenerated like the photocatalytic filter 44. The photocatalyst flow path 35 is configured so that air cannot flow through the photocatalyst filter 44 when it is immersed in water. The activated carbon flow path 33 is also provided with a throttle wall 34 that throttles the air flow. As a result, when the cleansing toilet seat device 10 is in use, air is reliably circulated through the activated carbon flow path 33, and deodorization is performed by the activated carbon filter 42, which has high adsorption efficiency, enabling rapid deodorization of odors. When the cleansing toilet seat device 10 is not in use, the pressure loss of the activated carbon flow path 33 is reliably greater than that of the photocatalyst flow path 35 due to the synergistic effect of the pressure loss of the activated carbon filter 42 and the throttle wall 34 of the activated carbon flow path 33. This promotes air flow through the photocatalyst flow path 35 when not in use, allowing the photocatalyst filter 44 to deodorize odors that were not completely deodorized during use. Furthermore, when not in use, the flow of air to the activated carbon filter 42 is restricted to limit the usage time, thereby extending the life of the activated carbon filter 42.

[0034] Furthermore, when in-use deodorization control is started, water is supplied to storage tank 38 at a rate that exceeds the predetermined amount of water discharged from drainage channel 39, and during in-use deodorization control, water is supplied to storage tank 38 at a rate that compensates for the predetermined amount of water discharged, and when in-use deodorization control is ended, the water supply to storage tank 38 is stopped and the water is drained. Therefore, it is possible to quickly switch between immersing and releasing photocatalytic filter 44 in storage tank 38 with a simple configuration.

[0035] Furthermore, when a user is detected, the LED lamp 46 is turned on only during deodorization when not in use, preventing unnecessary lighting, so that deodorization by the photocatalytic filter 44 can be performed appropriately.

[0036] Furthermore, the switching valve 25 is configured to be able to switch the supply destination of the cleaning water circulating through the water supply passage 22 between the cleaning nozzle 21 (posterior cleaning nozzle or bidet cleaning nozzle) and the storage tub 38. When in-use deodorization control is started, the control unit 50 controls the switching valve 25 so that cleaning water is supplied to the storage tub 38, and when a command to clean private parts is issued during in-use deodorization control, the control unit 50 controls the switching valve 25 so that cleaning water is supplied to the cleaning nozzle 21. Therefore, since the configuration for supplying water for private parts cleaning and the configuration for supplying water to the storage tub 38 are shared, a simple configuration can be achieved and the size of the cleaning toilet seat device 10 can be prevented from increasing. Furthermore, by supplying cleaning water heated by the heater 24 to the storage tub 38, the effectiveness of cleaning the photocatalytic filter 44 can be improved.

[0037] In the above-described embodiment, the configuration for supplying water for private parts washing and the configuration for supplying water to the storage tub 38 are shared, but this is not limited to this, and the configuration for supplying wash water for private parts washing and the configuration for supplying wash water to the storage tub 38 may be provided separately. That is, the deodorizing unit 30 may be provided with a dedicated water supply section for supplying wash water to the storage tub 38. In this way, even if private parts washing is performed during in-use deodorizing control, the storage tub 38 can be reliably maintained in a full water state (with the photocatalytic filter 44 immersed). Note that the deodorizing unit 30 may also be provided with a water supply section that supplies wash water to the storage tub 38 and a control section that executes in-use deodorizing control and out-of-use deodorizing control.

[0038] In the embodiment, when a user is detected, the LED lamp 46 is turned off, the non-use deodorization control is terminated, and the in-use deodorization control is initiated. When a predetermined time has elapsed since the user was detected as having left the toilet (when the predetermined time has elapsed since the user left the toilet), the in-use deodorization control is terminated, the LED lamp 46 is turned on, and the non-use deodorization control is initiated. However, this is not limited to this. For example, when the seat detection sensor 16 detects a user sitting on the toilet seat 12, the LED lamp 46 may be turned off, the non-use deodorization control may be terminated, and the in-use deodorization control may be initiated. Also, when water storage in the storage tub 38 is completed, the LED lamp 46 may be turned off, the non-use deodorization control may be terminated, and the in-use deodorization control may be initiated. Also, when the human body detection sensor 15 no longer detects a user, the in-use deodorization control may be terminated, the LED lamp 46 may be turned on, and the non-use deodorization control may be initiated. Also, when water drainage from the storage tub 38 is completed, the LED lamp 46 may be turned on and the non-use deodorization control may be initiated. Alternatively, the LED lamp 46 may be kept lit at all times. In addition, in the embodiment, the first deodorization control is executed as the deodorization control when the cleansing toilet seat device 10 is not in use, and the second deodorization control is executed as the deodorization control when the cleansing toilet seat device 10 is in use, but this is not limited to this. That is, the first deodorization control and the second deodorization control may be switched and executed regardless of whether the cleansing toilet seat device 10 is in use.

[0039] In the embodiment, the storage tub 38 (drainage channel 39) is configured to constantly discharge water into the toilet bowl, but this is not limited thereto and the system may be configured to allow switching between draining and not draining. However, for simplicity, the configuration as in the embodiment is preferred.

[0040] In the embodiment, the activated carbon filter 42 is provided as a second filter of a different type from the photocatalytic filter 44 (first filter), but this is not limited to this. The second filter may be any filter that does not have a photocatalyst, unlike the first filter, and may be a filter that physically adsorbs with activated carbon or the like, a chemical filter that chemically adsorbs with ion exchange fibers, or a filter that is capable of both chemical and physical adsorption.

[0041] In the embodiment, the fan 48 is driven at a constant rotation speed to keep the airflow constant, but this is not limited to this and the airflow may be varied. For example, the rotation speed of the fan 48 may be increased to increase the airflow during deodorization when the appliance is in use, and the rotation speed of the fan 48 may be decreased to decrease the airflow during deodorization when the appliance is not in use. Alternatively, the airflow may be varied based on an operational command from the user.

[0042] The correspondence between the main elements of the embodiment and the main elements of the present disclosure described in the "Means for Solving the Problem" section will be explained below. The cleansing toilet seat device 10 of the embodiment corresponds to the "toilet seat device" of the present disclosure, the deodorizing unit 30 corresponds to the "deodorizing device," the photocatalyst filter 44 corresponds to the "first filter," the activated carbon filter 42 corresponds to the "second filter," the LED lamp 46 corresponds to the "lamp," the photocatalyst flow path 35 corresponds to the "first flow path," the activated carbon flow path 33 corresponds to the "second flow path," the flow path 31 corresponds to the "flow path," the fan 48 corresponds to the "fan," the storage tank 38 corresponds to the "storage tank," the water supply path 22, the water supply valve 23, and the switching valve 25 correspond to the "water supply unit," and the control unit 50 corresponds to the "control unit." The throttle wall 34 corresponds to the "throttle unit." The cleaning nozzle 21 corresponds to the "cleaning nozzle."

[0043] Note that the correspondence between the main elements of the embodiments and the main elements of the present disclosure described in the "Means for Solving the Problem" section does not limit the elements of the present disclosure described in the "Means for Solving the Problem" section, because the embodiments are examples for specifically explaining the modes for implementing the present disclosure described in the "Means for Solving the Problem" section. In other words, the present disclosure described in the "Means for Solving the Problem" section should be interpreted based on the description in that section, and the embodiments are merely specific examples of the present disclosure described in the "Means for Solving the Problem" section.

[0044] The above describes the forms for implementing the present disclosure, but the present disclosure is not limited to these embodiments in any way, and it goes without saying that the present disclosure can be implemented in various forms within the scope that does not deviate from the gist of the present disclosure. [Industrial Applicability]

[0045] The present disclosure is applicable to the toilet seat device manufacturing industry and the like. [Explanation of symbols]

[0046] 1 toilet bowl, 10 cleaning toilet seat device, 11 toilet seat device body, 12 toilet seat, 13 toilet lid, 14 operation panel, 15 human body detection sensor, 16 seating detection sensor, 20 nozzle unit, 21 cleaning nozzle, 22 water supply channel, 23 water supply valve, 24 heater, 25 switching valve, 26a rear cleansing supply channel, 26b bidet cleansing supply channel, 26c photocatalyst supply channel, 30 deodorizing unit, 31 flow channel, 31a air intake port, 31b exhaust port, 32 partition wall, 32a extension portion, 33 activated carbon flow channel, 34 throttle wall, 35 photocatalyst flow channel, 36, 37 partition wall, 38 storage tank, 39 drain channel, 42 activated carbon filter, 44 photocatalyst filter, 46 LED lamp, 48 fan, 50 control unit, 52 CPU, 54 ROM, 56 RAM, 58 timers.

Claims

1. A toilet seat device equipped with a deodorizing device, The deodorizing device is a first filter having a photocatalyst and a second filter of a different type from the first filter; a lamp for irradiating the photocatalyst of the first filter with light; a flow path in which a first flow path in which the first filter is disposed and a second flow path in which the second filter is disposed and which has a larger pressure loss than the first flow path are provided in parallel inside the air intake port, and in which air taken in through an air intake port flows through either the first flow path or the second flow path and is discharged from an air exhaust port; a fan that blows air so that the air flows from the intake port toward the exhaust port; a storage tank provided in the first flow path, the storage tank accommodating the first filter and capable of storing water; Equipped with a water supply unit that supplies water to the storage tank; a control unit that executes a first deodorization control that controls the lamp, the water supply unit, and the fan to circulate air through the first flow path and deodorize with the first filter when no water is stored in the storage tank, and a second deodorization control that controls the water supply unit and the fan to circulate air through the second flow path and deodorize with the second filter when water is stored in the storage tank so that the first filter is immersed in water and air flow through the first flow path is suppressed; A toilet seat device comprising:

2. 2. The toilet seat device according to claim 1, the second filter has a larger pressure loss and a higher deodorizing performance than the first filter, the first flow path is configured so that air cannot flow through it when the storage tank is filled with water, The second flow path is provided with a throttle portion that throttles the flow of air. Toilet seat device.

3. 3. The toilet seat device according to claim 1 or 2, The storage tank is configured to constantly discharge a predetermined amount of water into the toilet bowl, The control unit controls the water supply unit so that when a user starts using the toilet seat device, the water supply unit supplies water to the storage tub at a water supply amount exceeding the predetermined drainage amount in order to start the second deodorization control, supplies water to the storage tub at a water supply amount that makes up for the predetermined drainage amount during the second deodorization control, and stops supplying water to the storage tub when the second deodorization control ends. Toilet seat device.

4. 4. A toilet seat device according to any one of claims 1 to 3, When a user starts using the toilet seat device, the control unit turns off the lamp, ends the first deodorization control, and starts the second deodorization control, and when a predetermined time has passed since the user has finished using the toilet seat device, the control unit turns on the lamp and starts the first deodorization control. Toilet seat device.

5. 5. A toilet seat device according to any one of claims 1 to 4, Equipped with a cleaning nozzle that sprays cleaning water onto the human body part, the water supply unit is configured to be able to switch the water supply destination between the cleaning nozzle and the storage tank, The control unit controls the water supply unit to supply water to the storage tank when the second deodorization control is started, and controls the water supply unit to supply water to the washing nozzle when an instruction to wash a human private part is given during the second deodorization control. Toilet seat device.

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