JP2008174957A - Toilet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the adhesion of urine or diarrheal stool easily spattering in a wide range to the inner surface of a toilet bowl. <P>SOLUTION: Water is sprayed from a water spray nozzle 9 disposed on a toilet bowl body on the inner surface of the toilet bowl before receiving excreta to form a water film on the inner surface of the toilet bowl for suppressing the adhesion of dirt to the inner surface of the toilet bowl. The water spray nozzle 9 comprises a water supply body 35 formed at the center of an annular water jetting part 34 and a water diffusion body 36 for radially diffusing the water jetted from the water jetting part 34. The water diffusion body 36 is circular, and its upper wall opposed to the water jetting part 34 is set in a concave shape. Though the supply amount of water is determined by the opening of the water jetting part 34, the opening can be made large since the water jetting part 34 is positioned at the center of the water supply body 35. Therefore, the opening is hard to be clogged with foreign matter. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a toilet apparatus in which a toilet is provided with a dirt prevention measure.

  When a toilet is used, it is generally known that if the inner surface of the toilet is dry, filth and the like will stick out and it will be difficult to clean.

  In order to solve this problem, water is sprayed on the inner surface of the toilet in advance to make it wet so that dirt can be prevented from adhering with the water film, and can be easily washed away even if it adheres. It can be seen.

  20 to 22 show typical ones. Specifically, a toilet seat 102 is provided in a Western-style toilet 101, and a toilet seat body 103 that pivotally supports the toilet seat 102 so as to be openable and closable is used for local body washing. And a water spray nozzle 105 for spraying water on the inner surface of the toilet bowl 101.

  Water spray from the water spray nozzle 105 is started by detecting that the user has entered the toilet room with a human body detection sensor, and water is sprayed on the inner surface of the toilet bowl 101 until the user sits on the toilet seat 102. A film is to be formed.

  The water spray nozzle 105 includes a water supply body 107 having a water supply path 106 and a water diffuser 108 that diffuses water from the water supply path 106 radially. The diffuser 108 is connected by a plurality of ribs 109 positioned at equal intervals in the circumferential direction.

And the water from the water supply path 106 of the water supply body 107 is diffused radially by the water diffuser 108 and dispersed at a predetermined height on the inner surface of the toilet 101 (see, for example, Patent Document 1).
Japanese Patent No. 3447352

  The water diffuser 108 diffuses water radially, and the flow rate and flow velocity at that time depend solely on the annular gap t set between the water supply 107 and the water diffuser 108. Therefore, in order to spray water reliably from the water spray nozzle 105 located at the rear to the front inner surface of the toilet 101, it is necessary to make the annular gap t as small as possible. Foreign matter was easily clogged.

  In addition, since the plurality of ribs 109 are present in the annular gap t, there is a tendency that the water distribution tends to vary, and in addition, there is a portion where the water is not sprayed.

  As a result, there has conventionally been a problem that a water film cannot be formed evenly on the inner surface of the toilet and a sufficient effect cannot be expected as a countermeasure against dirt.

  The present invention solves such a conventional problem, and an object of the present invention is to form a water film evenly on the inner surface of a toilet and to reliably suppress adhesion of dirt.

  To achieve the above object, a toilet apparatus according to the present invention is disposed on a toilet seat main body that supports the toilet seat so that the toilet seat can be tilted up and down, and a toilet seat main body that wets the inner surface of the toilet bowl. The water spray nozzle is composed of a water supply body formed with a water ejection portion in the central portion and a water diffuser that diffuses the water ejected from the water ejection portion radially. Is.

  The flow rate and flow rate of water sprayed from the water spray nozzle are set to predetermined values by the water jetting part of the water supply body, and the water diffuser is exclusively used for water diffusion to the surroundings, that is, the inner surface of the toilet.

  In the toilet apparatus of the present invention, water diffusion of the water spray nozzles is evenly performed, so that the adhesion of dirt to the inner surface of the toilet bowl is suppressed, and a sanitary toilet environment can be created.

  A toilet apparatus of the present invention comprises a toilet seat that is installed in a toilet bowl so as to be tiltable, a toilet seat body that supports the toilet seat in a tiltable manner, and a water spray nozzle that is disposed on the toilet seat body to wet the inner surface of the toilet bowl. And this water spray nozzle is comprised from the water supply body which formed the water ejection part in the center part, and the water diffuser which diffuses the water ejected from the said water ejection part radially.

  As a specific embodiment, it is desirable that the water diffuser is formed in a concave curved surface shape, while the water ejection portion of the water spray nozzle is configured in an annular shape.

  Therefore, the water whose flow rate and flow velocity are set at the water ejection portion of the water supply body is ejected to the central portion of the water diffuser, diffused radially through the concave curved surface portion, and discharged to the inner surface of the toilet. .

  And the water which reached the toilet inner surface forms a water film on the surface and prevents the adhesion of dirt.

  As described above, since the flow rate and flow velocity are determined by the water ejection portion of the water supply body, there is no need for an annular gap as in the prior art, and foreign substances can be prevented from being clogged as much as possible.

  It is also conceivable that a plurality of water ejection portions of the water spray nozzle are arranged in an annular shape.

  In addition, in order to perform water diffusion evenly and reliably, a low-pressure generating part that forms a low-pressure part by water ejected from the water ejection part is provided in the circumferential direction of the water diffuser, and the water diffuser by the Coanda effect is provided. Promoting water adhesion would also be considered as one embodiment.

  The water diffuser cannot be disposed in the central part of the toilet because of its structure, and in many cases, it is generally low to place the water diffuser in an uneven part such as the rear part of the toilet. Therefore, the flow distribution of the water diffused by the water diffuser is set to be different in the circumferential direction so that the water is evenly spread on the inner surface of the toilet.

  Specific examples of making the water flow distribution different in the circumferential direction include decentering the water diffuser with respect to the water ejection portion of the water spray nozzle, changing the opening degree of the plurality of independent water ejection portions, or a plurality of independent There are cases where the circumferential density of the water ejection part is changed.

Another one of the present invention is a toilet seat installed in a toilet bowl, a toilet seat body that supports the toilet seat in a tiltable manner, and a water spray nozzle disposed in the toilet seat body to wet the toilet bowl inner surface. A lighting device for illuminating the inner surface of the toilet, wherein the water spray nozzle includes a water supply body formed at a central portion of a water ejection portion, and a water diffusion body that diffuses water ejected from the water ejection portion radially. And the lighting device is operated in conjunction with water spraying from the water spray nozzle.

  Therefore, the state of water spraying from the water spraying nozzle is brought up in the lighting, and the toilet space can be transformed into a comfortable space.

  It is desirable that the lighting device is provided with a case for covering the water spray nozzle and interposed between the water spray nozzle and the case.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2, a toilet seat 2 installed on a Western-style toilet 1 is pivotally supported on a toilet seat body 4 together with a toilet lid 3 so that the toilet seat 2 and the toilet lid 3 can be raised and lowered manually. However, when the human body detection sensor 5 detects that the user has entered and exited the toilet room, the up / down operation is automatically performed.

  These driving means are built in the toilet seat body 4, and when the user enters the toilet room, only the toilet lid 3 is activated, the toilet seat 2 is activated as required, and when the user leaves the toilet room, the toilet seat is activated. Of course, the lid 3 is tilted together when the toilet seat 2 is in the raised state.

  The user's seating on the toilet seat 2 is detected by a seating sensor 6 using infrared rays or the like, and the deodorizing device is started.

  The toilet seat 2 has two types of cleaning nozzles 7 and 8, a water spray nozzle 9 for forming a water film on the inner surface of the toilet 1, and a lighting device 10 that illuminates the water spray status from the water spray nozzle 9. It is arranged.

  The selective operation of the cleaning nozzles 7 and 8 and the cleaning conditions can be controlled by the remote controller 11.

  That is, the remote controller 11 includes switches 12 and 13 (for butt cleaning and bidet cleaning) for selectively operating the cleaning nozzles 7 and 8, a drying switch 14, an indicator 15 for each function, and a cleaning nozzle. Use of temperature control switches 16 and 17 and washing nozzles 7 and 8 for varying the temperature of the water ejected from the nozzles 7 and 8-the stop switch 18 and the contamination prevention for arbitrarily spraying water from the water spray nozzle 9 Each switch 19 is provided so as to control various control devices, electric circuits, and the like built in the toilet seat body 4.

  FIG. 3 shows a specific example. A water circuit 22 branched from a water supply source 21 such as a water supply via a branch tap 20 includes a strainer 23, a check valve 24, a constant flow valve 25, an original solenoid valve. 26, the flow path switching valve 27, the flow sensor 28, the hot water unit 29, the pump 30, and the nozzle switching valve 31 are connected in order from the upstream side.

  The flow path switching valve 27 is for selectively switching the water channel to the washing nozzles 7 and 8 side or the water spraying nozzle 9 side, and the nozzle switching valve 31 is for the water channel to one of the washing nozzles 7 and 8. A waste water circuit 32 for discarding excess water downstream from the original electromagnetic valve 26 is branched from between the flow path switching valve 27 and the flow rate sensor 28. It is.

  The original electromagnetic valve 26, the flow path switching valve 27, the hot water unit 29, the pump 30, the nozzle switching valve 31, and the lighting device 10 are controlled by the control means 33.

  In addition to the control devices such as these water channels, the toilet seat body 4 has a built-in deodorizer, a hot air generator for drying, and the like.

  That is, when the use-stop switch 18 of the remote controller 11 is in use, the original electromagnetic valve 26 can be opened. When the butt washing switch 12 is pressed here, the original electromagnetic valve 26 is opened. Then, the pump 30 is activated, and the nozzle switching valve 31 opens the water circuit on the side of the cleaning nozzle 7 for cleaning the buttocks.

  Therefore, the water that has flowed with the original solenoid valve 26, the flow path switching valve 27, and the flow sensor 28 is instantaneously warmed when passing through the next stage hot water unit 29, and is heated as hot water from the washing nozzle 7 via the pump 30. It will be ejected.

  When the bidet cleaning switch 13 is pressed, the nozzle switching valve 31 opens the bidet cleaning nozzle 8 and the bidet cleaning hot water is ejected.

  The temperature of the hot water ejected from these washing nozzles 7 and 8 can be controlled by adjusting the output of the hot water unit 29 by means of the temperature adjustment switches 16 and 17, for example.

  In addition, if the dirt prevention switch 19 of the remote controller 11 is turned ON, water can be sprayed from the water spray nozzle 9 as desired. Normally, the human body detection sensor 5 detects that the user has entered the toilet room. The flow path switching valve 27 opens the water circuit on the water spray nozzle 9 side for a predetermined time later, and sprays water from the water spray nozzle 9 to the inner surface of the toilet 1.

  Therefore, the water film is formed on the inner surface of the toilet 1 before the user adds, so that it is difficult for dirt to adhere.

  And while water spraying is performed from the water spray nozzle 9, the lighting device 10 is operated so that the water spraying state is raised to the lighting.

  Next, the configuration of the water spray nozzle 9 will be described in detail. 4 and 5, the water spray nozzle 9 includes a water supply body 35 having an annular water ejection portion 34 formed at the center thereof, and a water diffusion body 36 that radially diffuses the water ejected from the water ejection portion 34. It is composed of

  The water diffusion body 36 has a circular shape, and the upper wall facing the water ejection portion 34 is set to have a concave curved surface, and from the column portion 38 that enters the internal water passage 37 of the water supply body 35. Supporting ribs 39 are formed radially.

  The water spraying speed and flow rate from the water spraying nozzle 9 are determined by the opening degree of the water jetting part 34. Since the water jetting part 34 is located at the center of the water supply body 35, the conventional dispersion type Instead, it becomes a concentrated type, and the opening area can be increased correspondingly, and clogging with foreign matters is less likely to occur.

  The water flowing through the water flow path 37 of the water supply body 35 is rectified by the ribs 39 in the middle to reach the water ejection portion 34, from which it is ejected to the concave curved upper wall of the water diffuser 36. The Then, the direction of the concave curved upper wall is changed to be dispersed radially.

  By the way, although the rib 39 exhibits a rectifying action, the water is not dispersed in the circumferential direction after the water ejection portion 34 because the water amount is throttled to some extent by the downstream water ejection portion 34, and therefore The water film is surely formed by being evenly sprayed on the inner surface of the toilet 1.

  In FIG. 6, the lighting device 10 is installed inside a case 40 made of a translucent material surrounding the upper portion of the water spray nozzle 9, and the water spray status from the water spray nozzle 9 passes through the case 40. The lighting device 10 comes to light up.

  7 shows a time chart for explaining the operation. Specifically, the opening / closing state of the toilet lid 3, the switching state of the flow path switching valve 27, the opening / closing state of the original electromagnetic valve 26, the lighting device 10 It shows the operating status.

  a is a case where the toilet lid 3 is automatically activated when the human body detection sensor 5 detects a human body. At the same time, the flow path switching valve 27 opens the water circuit of the water spray nozzle 9, and the original electromagnetic valve 26 is turned on at time T1. It opens and operates the illuminating device 10.

  The opening of the original electromagnetic valve 26 and the lighting operation of the lighting device 10 are continued for a time T2, and at the same time, the flow path switching valve 27 closes the water circuit of the water spray nozzle 9 and opens the water circuit to the cleaning nozzles 7 and 8.

  That is, when the user enters the toilet for a period of time T2, water is sprayed from the water spray nozzle 9 to the inner surface of the toilet 1 to form a water film. In addition, the water film prevents the adhesion of dirt as much as possible.

  The time T2 is, for example, the time from when the user enters the toilet until he / she sits on the toilet seat 2, during which time the user performs the water from the water spray nozzle 9 that is produced so as to float on the illumination device 10. The spraying situation can be confirmed, and the toilet can be improved into a comfortable space.

  b is a case where the user is seated on the toilet seat 2 before the elapse of time T2, and the flow path switching valve 27 closes the water circuit on the water spray nozzle 9 side based on the detection signal of the seating sensor 6. Then, the water circuit on the side of the cleaning nozzles 7 and 8 is opened, and the lighting device 10 is also turned off.

  Further, c is a case where the prevention switch 19 is operated as necessary. At this time, the flow path switching valve 27 opens the water circuit of the water spray nozzle 9 during time T3, and when the time T3 elapses, the original electromagnetic valve 26 is opened and the lighting device 10 is operated. This state is continued for the time T4 when the anti-stain switch 19 is turned off. That is, the example of c is very convenient when the toilet 1 is cleaned.

  By the way, the concave curved surface of the upper wall of the water diffuser 36 is set so that the height H of the water spray from the water spray nozzle 9 is approximately equal to the height H of collision with the inner surface of the toilet 1. Therefore, the water sprayed from the water spray nozzle 9 spreads radially toward the outer peripheral portion of the inner surface of the toilet 1, is poured directly under the rim portion, and flows down while wetting the entire surface along the inner surface inclination.

  Moreover, since the illuminating device 10 is in the case 40 that covers the water spray nozzle 9 and is arranged in a gap with the water spray nozzle 9 and irradiates the spray water from the water spray nozzle 9, The sprayed water from the water spray nozzle 9 is illuminated, and the effect of light and sprayed water is given to the user by irregular reflection, which not only confirms the water flow but also gives a refreshing feeling and healing effect.

  In addition, since the case 40 is made of a translucent material, not only the lighting device 10 but also the case 40 itself shines, so that the user can confirm the sprayed water more reliably. Furthermore, since the sprayed water and the toilet 1 are illuminated with the light light, the production of light with less irritation can be achieved.

As described above, according to the first embodiment, when the inner surface of the toilet 1 is wet, when dirt such as stool or urine remains, it can be easily washed away and when the toilet cleaning is necessary. Since can be sprinkled with water arbitrarily, it can be very easy to use.

  Next, the relationship between the spraying flow rate from the water spraying nozzle 9, that is, the jetting speed from the water jetting part 34 and the spreading spread width will be described with reference to FIG. Here, the spreading width represents the diameter of a sprayed water diffused in a bowl shape from the water diffuser 36 on a plane 100 mm away.

  In FIG. 8, when the ejection flow rate is 2 m / s or less, the spreading width is small, and a sufficient wet area cannot be secured. On the other hand, when the ejection flow rate is 10 m / s or more, droplets are ejected from the toilet 1.

  Therefore, by setting the ejection flow rate to 2 to 10 m / s, the necessary wet area can be secured on the inner surface of the toilet 1 without the sprayed water jumping out. As an experimental result, an ideal wetted area was secured at an ejection speed of 4 to 8 m / s.

(Embodiment 2)
9 further improves the water spraying from the water spraying nozzle 9, and the same reference numerals are given to the components that perform the same actions as in FIG. 4, and the detailed description of the first embodiment is used.

  The difference is that a concave portion 41 for generating a low-pressure vortex is provided in the upper circumferential direction of the water diffusion body 36 corresponding to the ejection side of the water ejection section 34 of the water supply body 35.

  In the above configuration, a part of the water ejected from the water ejection part 34 generates a low-pressure vortex in the recess 41, and as a result, the entire flow comes to adhere to the water diffuser 36 (Coanda effect).

  Therefore, the water from the water ejection part 34 is guided to the water diffuser 36 and is surely dispersed radially.

(Embodiment 3)
10 to 13 show a structure in which a plurality of water ejection portions of the water spray nozzle are configured, and the same reference numerals are given to components that perform the same operations as those in FIG. 4, and the detailed description is based on those in the first embodiment. To do.

  First, what is shown in FIGS. 10 and 11 is formed between the outer circumferential surface of the column portions 38 of the water diffuser 36 by forming recesses at intervals of 90 degrees from the wall of the internal water passage 37 in the water supply body 35. Independent water ejection portions 42 are provided.

  Moreover, what is shown in FIGS. 12 and 13 is a structure in which the water diffusion body 36 and the water supply body 35 are integrally formed, and a plurality of independent water ejection portions 43 made of round holes are concentrically arranged. is there.

  The water jet part 42 and the water jet part 43 are the same as those in the first embodiment in that the jet speed and flow rate of water sprayed from the water spray nozzle 9 are determined, and independent water jet parts 42 and 43. When the water ejected independently from the water hits the water diffuser 36 and is diffused radially, it becomes a continuous annular radial shape.

  Since the water ejection portions are dispersed and independent, the degree of opening is small, but the opening area is larger than that of the conventional annular gap t, and the possibility of clogging of foreign matters can be reduced.

  In these configurations, the center shift of the water diffuser 36 can be eliminated, and a water film can be formed by stable water diffusion.

(Embodiment 4)
By the way, the arrangement of the water spray nozzles must be arranged backwardly with respect to the center of the toilet bowl. In this arrangement, when the amount of water sprayed from the water spray nozzle is the same, the amount of water sprayed in the forward direction of the toilet is long, so the amount of water decreases, and conversely, the distance is short and the amount of water increases. Thus, a big difference will arise in the amount of sprayed water before and behind the toilet bowl inner surface.

  Therefore, the amount of water sprayed from the water spray nozzle is biased so that it increases in the forward direction of the toilet and decreases in the backward direction, thereby making the water volume per unit area of the toilet inner surface substantially uniform, thereby improving the efficiency of the toilet inner surface. It can be wetted widely and uniformly.

  14 and 15, the water spray 36 of the water spray nozzle 9 of FIGS. 4 and 5 in the first embodiment is eccentric with respect to the water supply body 35, and the degree of opening of the water ejection part 34 is a toilet bowl. It is set larger as the front of 1.

  Therefore, water is evenly sprayed on the inner surface of the toilet 1 and a water film can be reliably formed on the entire inner surface.

  The second specific measure shown in FIG. 16 is the one in which the number of independent water ejection portions 42 in FIGS. 10 and 11 in the third embodiment is set to the front of the toilet 1, and the third specific measure shown in FIG. The opening degree of the water ejection part 42 is set to be larger toward the front of the toilet 1.

  The fourth specific measure shown in FIG. 18 is the one in which the number of independent water ejection portions 43 in FIGS. 12 and 13 in Embodiment 3 is set to the front of the toilet 1, and the fifth specific measure shown in FIG. 19 is independent. The opening degree of the water ejection part 43 is set to be larger toward the front of the toilet 1.

  From the above, even if the water spray nozzle 9 is arranged in an eccentric position with respect to the toilet 1, a water film can be uniformly and surely formed on the inner surface thereof, and the action of suppressing dirt is not uneven. Is something that can be done.

  In addition, although the representative representative selected in the first embodiment has been introduced, the following implementation means may be considered in addition to this.

  (1) In the first embodiment, after the human body is detected, the toilet lid 3 is opened, and then water is sprayed from the water spray nozzle 9. However, for example, immediately after the human body is detected, the water spray nozzle 9 The inner surface of the toilet 1 may be quickly wetted by spraying water, so that the toilet 1 can be used more quickly.

  (2) In the first embodiment, the water spraying from the water spray nozzle 9 is stopped after the time T2 has elapsed or when the seating detection is performed. In addition, for example, the use-stop switch 18 of the remote controller 11 is used. You may stop arbitrarily by operating. According to this, it can respond to the case where the user does not want to wet the toilet 1 urgently.

  (3) In the first embodiment, the human body detection sensor 5 is arranged independently. However, although it is inferior to quick detection, the human body detection sensor 5 may be built in the toilet seat body 4 or the remote controller 11. Depending on the situation, the toilet seat body 4 and the remote controller 11 may be incorporated.

(4) In the first embodiment, the lighting device 10 is turned on or off in accordance with the timing of water spraying from the water spraying nozzle 9. It can be used actively or as a spotlight as a urine target for boys.

  As described above, the toilet apparatus according to the present invention is capable of creating a sanitary toilet environment by preventing the dirt from adhering to the inner surface of the toilet bowl because the water diffusion of the water spray nozzle is evenly performed. Other applications are possible.

External appearance perspective view of a toilet apparatus in Embodiment 1 of the present invention The perspective view of the remote controller in Embodiment 1 Water circuit diagram in the first embodiment Vertical sectional view of the water spray nozzle in the first embodiment Cross section of the water spray nozzle Sectional drawing of the toilet apparatus in Embodiment 1 Toilet device time chart in the first embodiment Operation explanatory diagram showing the relationship between the jet velocity and spreading width of the water spray nozzle in the first embodiment The longitudinal cross-sectional view of the water spray nozzle in Embodiment 2 of this invention The longitudinal cross-sectional view of the water spray nozzle in Embodiment 3 of this invention Cross section of the water spray nozzle Vertical sectional view of a water spray nozzle showing another example of the third embodiment Cross section of the water spray nozzle The longitudinal cross-sectional view of the water spray nozzle in Embodiment 4 of this invention Cross section of the water spray nozzle Vertical sectional view of a water spray nozzle showing another example of the fourth embodiment Cross section of the water spray nozzle Vertical sectional view of a water spray nozzle showing still another example of the fourth embodiment Cross section of the water spray nozzle Cross-sectional view of a conventional toilet device Side view of a conventional water spray nozzle Cross section

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet 2 Toilet seat 9 Water spray nozzle 10 Illumination device 34,42,43 Water ejection part 35 Water supply body 36 Water diffuser 40 Case 41 Low pressure part (recessed part)

Claims (11)

A toilet seat installed in a toilet bowl so as to be tiltable, a toilet seat body that supports the toilet seat in a tiltable manner, and a water spray nozzle disposed on the toilet seat body to wet the inner surface of the toilet bowl. The toilet apparatus comprised from the water supply body which formed the water ejection part in the center part, and the water diffuser which diffuses the water ejected from the said water ejection part radially. The toilet device according to claim 1, wherein the water diffuser is formed in a concave curved surface shape. The toilet apparatus according to claim 1, wherein the water ejection portion of the water spray nozzle is configured in an annular shape. The toilet apparatus according to claim 1, wherein a plurality of water ejection portions of the water spray nozzle are arranged in an annular shape. The toilet apparatus according to claim 1, wherein a low-pressure generating portion that forms a low-pressure portion with water ejected from the water ejection portion is provided in the circumferential direction of the water diffuser, and the water diffuser is diffused while adhering water to the water diffuser. The toilet apparatus according to claim 1, wherein the flow distribution of water diffused by the water diffuser is set to be different in the circumferential direction. The toilet device according to claim 6, wherein the flow rate distribution of the water diffused by the water diffuser is made different in the circumferential direction by decentering the water diffuser with respect to the water ejection portion of the water spray nozzle. The toilet device according to claim 4 or 6, wherein the flow rate distribution of the water diffused by the water diffuser is varied in the circumferential direction by changing the opening degree of the plurality of water ejection portions. The toilet device according to claim 6, wherein the flow rate distribution of the water diffused by the water diffuser is varied in the circumferential direction by changing the circumferential density of the plurality of water ejection portions. Toilet seat installed in the toilet bowl so that it can be tilted and tilted, a toilet seat body that supports the toilet seat so that it can be tilted up and down, a water spray nozzle arranged in the toilet seat body to wet the toilet bowl inner surface, and a lighting device that illuminates the toilet bowl The water spray nozzle is composed of a water supply body formed with a water jet part at the center and a water diffuser that diffuses the water jetted from the water jet part radially. A toilet device that operates the lighting device in conjunction with water spray from a nozzle. The toilet apparatus according to claim 10, wherein a case covering the water spray nozzle is provided, and an illumination device is interposed between the water spray nozzle and the case.