Toilet device

Abstract

The invention provides a toilet flushing device capable of improving deodorization performance. The toilet device is characterized by being provided with: a case; the deodorization unit is arranged in the shell and is used for deodorizing the air in the toilet, and the deodorization unit is provided with a channel; and a fan that sucks air into the interior of the passage, the passage having: a first extension part that extends from the case; a second extension portion extending from the case at a position different from that of the first extension portion; and a connection portion connecting the first extension portion and the second extension portion, the first extension portion, the second extension portion, and the connection portion being integrally formed in the case.

Description

Technical Field

[0001] Aspects of the present invention generally relate to a toilet flushing device. Background Art

[0002] A toilet flushing device is known that has a deodorizing unit in a housing that can deodorize the inside of a toilet bowl (Patent Document 1). The deodorizing unit has a fan that sucks in air in the toilet bowl and a passage that circulates the sucked air.

[0003] Patent Literature Patent Document 1: Japanese Patent Application Publication No. 2016-148188 Summary of the invention

[0004] Since the duct described in Patent Document 1 is formed by combining two parts divided in the vertical direction, air leakage may occur from the gap between the joints of the parts, which may reduce the deodorizing performance.

[0005] The present invention is made based on the recognition of such problems, and the technical problem to be solved is to provide a toilet flushing device that can improve the deodorizing performance.

[0006] The first invention is a toilet flushing device, characterized in that it comprises: a shell; and a deodorizing unit, which is arranged inside the shell and deodorizes the air in the toilet, and the deodorizing unit has: a channel; and a fan, which draws air into the inside of the channel, and the channel has: a first extension portion extending from the shell; a second extension portion extending from the shell at a position different from the first extension portion; and a connecting portion connecting the first extension portion and the second extension portion, and the first extension portion, the second extension portion and the connecting portion are formed integrally on the shell.

[0007] According to the toilet flushing device, since the entire channel is integrated with the shell, the air tightness of the channel can be improved. Therefore, air leakage from the channel can be suppressed, thereby improving quietness and deodorizing performance. In addition, since the channel does not need to be assembled, the assembly man-hour can be reduced.

[0008] The second invention is the following toilet flushing device, characterized in that, in the first invention, the passage has: an air intake port for inhaling air; an air exhaust port for exhausting deodorized air; and a passage portion formed by the first extension portion, the second extension portion and the connecting portion, connecting the air intake port and the air exhaust port, and the passage portion is formed integrally on the shell over the span from the air intake port to the air exhaust port.

[0009] According to this toilet device, since the entire passage portion is formed integrally with the shell, the airtightness of the passage can be further improved. Thus, the deodorizing performance of the deodorizing unit can be improved.

[0010] A third invention is a toilet device according to the second invention, wherein a rotation axis of the fan extends upward relative to a bottom surface portion of the casing, and the fan discharges air in a direction orthogonal to the rotation axis.

[0011] According to the toilet device, the rotation axis of the fan extends upward relative to the bottom surface of the housing, and the air is discharged in a direction perpendicular to the rotation axis, so that even when the blade portion of the fan is enlarged, the height dimension of the housing can be suppressed from increasing. Thus, a toilet device that is compact as a whole and has high design properties can be made.

[0012] The fourth invention is a toilet flushing device according to the second or third invention, wherein the passage portion comprises: a first passage portion located on the air inlet side; and a second passage portion located on the air outlet side, and the fan is arranged between the first passage portion and the second passage portion.

[0013] According to the toilet flushing device, since the fan is arranged between the first passage portion and the second passage portion of the passage, the fan can be arranged in consideration of the influence of the pressure loss due to the shape of the passage. In addition, since the fan is arranged between the first passage portion and the second passage portion, the fan can be arranged in the passage without damaging the airtightness of the passage integrated with the shell. Thus, the deodorizing performance of the deodorizing unit can be improved.

[0014] A fifth invention is a toilet device according to the fourth invention, wherein the second passage portion is bent at an obtuse angle in the air flow direction.

[0015] According to this toilet device, it is possible to reduce the pressure loss when air flows through the second passage portion. Thus, it is possible to improve the deodorizing performance of the deodorizing unit.

[0016] A sixth invention is a toilet device according to the first invention, wherein the housing has a fixing portion for fixing the fan with a bolt.

[0017] According to the toilet flushing device, the fan is bolted to the fixing portion of the shell, so that the fan can be prevented from being deviated due to vibration or the like. Thus, the deodorizing performance of the deodorizing unit can be improved. In addition, the fixing portion is made into a bolt-fixed structure, so that the durability can be improved compared to the case of fixing by buckles or the like. Thus, the breakage of the fixing portion can be prevented, and the occurrence of situations such as replacing the entire shell due to the breakage of the fixing portion can be reduced.

[0018] According to the present invention, a toilet flushing device capable of improving deodorizing performance is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a perspective view showing a toilet unit including the toilet device according to the embodiment. Figure 2 It is an exploded perspective view showing a state where the shell cover is removed from the shell plate. Figure 3 This is a top view of the deodorizing unit as seen from above. Figure 4 is from Figure 3 A cross-sectional view of the shell plate and the deodorization unit observed from the AA direction. Figure 5 is from Figure 3 A cross-sectional view of the shell plate and the deodorization unit observed from the BB direction. Figure 6 is from Figure 4 Cross-sectional view of the shell plate and deodorization unit observed from the CC direction. Figure 7 is from Figure 4 Cross-sectional view of the shell plate and deodorization unit in the DD direction. Figure 8 It is an exploded perspective view showing a state where the fan is removed from the shell plate. Explanation of symbols 1-toilet flushing unit; 2-toilet; 2a-bowl; 10-toilet flushing device; 12-toilet seat; 14-toilet cover; 20-shell; 21-shell plate; 21a-fixing part; 22-bottom part; 24-side part; 25-cover; 25a-opening; 28-shell cover; 30-deodorizing unit; 40-channel; 40a-first extension part; 40b-second extension part; 40c-connecting part; 41-intake port; 43-exhaust port; 45-passage part; 45a-first passage part; 45b-second passage part; 45c-installing part; 45c1-inflow port; 45c2-outflow port; 47-sealing member; 50-first filter; 55-second filter; 60-fan; 61-rotating shaft; 62-blade part; 65-bolt; F-air. DETAILED DESCRIPTION

[0020] Hereinafter, the embodiments will be described with reference to the drawings. In each of the drawings, the same components are denoted by the same reference numerals and detailed descriptions thereof will be appropriately omitted.

[0021] Figure 1 It is a perspective view showing a toilet unit including the toilet device according to the embodiment. like Figure 1As shown, the toilet unit 1 includes a Western-style toilet (hereinafter, for convenience of explanation, simply referred to as a "toilet") 2 and a toilet device 10 installed on the top of the toilet 2. The toilet 2 has a bowl 2a for receiving excrement. The toilet device 10 includes a toilet seat 12, a toilet cover 14, and a shell 20. The toilet seat 12 and the toilet cover 14 are respectively supported by the shell 20 so as to be openable and closable. In the present application specification, "up", "down", "front", "back", "right", and "left" are directions viewed from a user sitting on the toilet seat 12 with his back to the toilet cover 14 in an opened state.

[0022] The toilet device 10 is mounted on the upper surface of the rear side of the toilet 2. The toilet device 10 can be mounted integrally with the toilet 2 or can be detachably mounted on the toilet 2. The toilet device 10 includes: a housing 20 formed in a hollow box shape; and a deodorizing unit 30 disposed inside the housing 20 and reducing odor components.

[0023] In addition, inside the shell 20, as needed, there are built-in functional parts such as: an opening and closing unit for controlling the opening and closing of the toilet seat 12 and the toilet cover 14; a toilet seat heating unit for controlling the temperature of the toilet seat 12; a local washing unit for washing the human body; and a communication unit that can communicate with an operating unit such as a remote controller. In addition, as needed, the toilet cover 14 is provided in the toilet flushing device 10 and can be omitted.

[0024] Figure 2 It is an exploded perspective view showing a state where the shell cover is removed from the shell plate. Figure 3 This is a top view of the deodorizing unit as seen from above. Figure 4 is from Figure 3 A cross-sectional view of the shell plate and the deodorization unit observed from the AA direction. Figure 5 is from Figure 3 A cross-sectional view of the shell plate and the deodorization unit observed from the BB direction. Figure 6 is from Figure 4 Cross-sectional view of the shell plate and deodorization unit observed from the CC direction. Figure 7 is from Figure 4 Cross-sectional view of the shell plate and deodorization unit in the DD direction. Figure 8 It is an exploded perspective view showing a state where the fan is removed from the shell plate.

[0025] The shell 20 includes a shell plate 21 and a shell cover 28 mounted on the shell plate 21. The shell plate 21 is equipped with functional parts such as a deodorizing unit 30 and a toilet seat heating unit. In each figure, for the sake of convenience, functional parts other than the deodorizing unit 30 are omitted. The shell cover 28 is formed in a box shape with an opening at the bottom. The shell cover 28 covers the functional parts provided on the shell plate 21.

[0026] The shell plate 21 has a bottom portion 22 and a side portion 24 extending upward from the bottom portion 22. An air inlet 41 of the deodorizing unit 30 described later is provided on the bottom portion 22. An air outlet 43 of the deodorizing unit 30 is provided on the side portion 24. Figure 2 to Figure 8 As shown in FIG. 1 , a detachable cover 25 is attached to the exhaust port 43 . The cover 25 is formed with an opening 25 a for exhausting the air F from the exhaust port 43 .

[0027] Next, the deodorizing unit 30 will be described.

[0028] The deodorizing unit 30 is provided inside the housing 20 and deodorizes the air in the toilet. Specifically, the deodorizing unit 30 deodorizes the air sucked in from the air inlet 41 and then discharges the deodorized air to the toilet from the air outlet 43. The deodorizing unit 30 is provided on the housing plate 21. The deodorizing unit 30 has a duct 40 and a fan 60.

[0029] The passage 40 is integrally provided on the shell plate 21 of the shell 20. The passage 40 forms a flow path through which the sucked air F flows. The passage 40 has: a first extension portion 40a extending from the bottom surface portion 22 of the shell plate 21; a second extension portion 40b extending from the bottom surface portion 22 of the shell plate 21 at a position different from the first extension portion 40a; and a connection portion 40c connecting the first extension portion 40a and the second extension portion 40b.

[0030] The lower end side of the first extension portion 40a is integrally connected to the bottom surface portion 22 of the shell plate 21 and extends upward. The first extension portion 40a, for example, constitutes the left side surface portion of the passage 40. The lower end side of the second extension portion 40b is integrally connected to the bottom surface portion 22 of the shell plate 21 and extends upward. The second extension portion 40b, for example, constitutes the right side surface portion of the passage 40. That is, the second extension portion 40b is opposite to the first extension portion 40a.

[0031] The connecting portion 40c connects the upper end of the first extension portion 40a and the upper end of the second extension portion 40b. The connecting portion 40c is integrally connected to the first extension portion 40a and the second extension portion 40b. The connecting portion 40c, for example, constitutes the upper portion of the passage 40. The first extension portion 40a, the second extension portion 40b, and the connecting portion 40c are integrally formed on the shell plate 21 of the shell 20. That is, the passage 40 cannot be removed from the shell plate 21.

[0032] The channel 40 has an air intake port 41, an air exhaust port 43, and a passage portion 45 that connects the air intake port 41 and the air exhaust port 43. Figure 4 As shown, the air inlet 41 is formed in the bottom surface portion 22 of the shell plate 21. The air inlet 41 is located above the bowl portion 2a of the toilet 2. Thus, the air in the toilet is sucked into the passage portion 45 from the air inlet 41 through the bowl portion 2a.

[0033] like Figure 4 , Figure 6 As shown, the first filter 50 is provided in the passage portion 45 and covers the air inlet 41. The first filter 50 is, for example, a dust collecting filter, and prevents dust from entering the passage portion 45. In addition, the first filter 50 prevents excrement splashed from the bowl portion 2a from entering the passage portion 45.

[0034] The exhaust port 43 is formed on the side surface 24 of the shell plate 21. Figure 5 to Figure 7 As shown in the figure, a detachable cover 25 is installed at the exhaust port 43. The second filter 55 is provided in the passage portion 45 and can be removed from the exhaust port 43. That is, the user can replace the second filter 55 after removing the cover 25. The second filter 55 contains a deodorizing catalyst, which removes the odor components from the air F containing the odor components flowing through the passage portion 45.

[0035] The passage portion 45 is formed by the first extension portion 40a, the second extension portion 40b, and the connecting portion 40c, and communicates between the air intake port 41 and the exhaust port 43. The passage portion 45 is formed integrally with the shell plate 21 of the shell 20 over the span from the air intake port 41 to the exhaust port 43. The air F sucked from the air intake port 41 flows toward the exhaust port 43 through the interior surrounded by the bottom surface portion 22 of the shell plate 21, the first extension portion 40a, the second extension portion 40b, and the connecting portion 40c.

[0036] The passage portion 45 includes a first passage portion 45a located on the side of the air inlet 41 and a second passage portion 45b located on the side of the air outlet 43. A mounting portion 45c for mounting the fan 60 is provided between the first passage portion 45a and the second passage portion 45b. Figure 8 As shown, the upper part of the mounting portion 45c is open, and the connecting portion 40c is not provided. The first passage portion 45a and the second passage portion 45b are connected by the fan 60.

[0037] The first passage portion 45a extends from the air inlet 41 toward the mounting portion 45c. The front end opening of the first passage portion 45a is covered by the housing cover 28 via the sealing member 47. The second passage portion 45b extends from the mounting portion 45c toward the air outlet 43. Figure 4 , Figure 8As shown, the connection portion 40c of the second passage portion 45b is located above the connection portion 40c of the first passage portion 45a. The mounting portion 45c has an inlet 45c1 through which air F flows from the first passage portion 45a into the fan 60, and an outlet 45c2 through which air F flows from the fan 60 into the second passage portion 45b.

[0038] like Figure 7 As shown, the outflow port 45c2 faces obliquely to the left and rearward. As a result, the second passage portion 45b is bent at an obtuse angle in the flow direction of the air F. That is, the mainstream of the air F flowing out of the outflow port 45c2 is bent at an angle α (90°<α<180°) and discharged from the exhaust port 43. As a result, the pressure loss when the air F flows through the second passage portion 45b can be reduced. Thus, the deodorizing unit 30 can make the flow of the air F flowing from the second passage portion 45b to the exhaust port 43 smooth, thereby improving the deodorizing performance.

[0039] The fan 60 is located inside the housing 20 and is disposed at the mounting portion 45c between the first passage portion 45a and the second passage portion 45b. The fan 60 is an intake fan that sucks air from the bowl portion 2a and the toilet, and is, for example, a fan that blows air in the centrifugal direction of rotation, such as a sirocco fan or a centrifugal fan, or a fan that blows air in the axial direction of rotation, such as an axial flow fan.

[0040] like Figure 5 As shown, the fan 60 is, for example, a Sirocco fan, having a rotating shaft 61 and a blade portion 62 arranged around the rotating shaft 61, and the air outlet is orthogonal to the rotating shaft 61. That is, the rotating shaft 61 of the fan 60 extends upward relative to the bottom portion 22 of the shell 20 (shell plate 21), and the air F is discharged in a direction orthogonal to the rotating shaft 61. The fan 60 sucks the air F from the bottom to the top, and discharges the air F in a lateral direction. As a result, the air F flows upward from the inlet 45c1 (the first passage portion 45a) due to the action of the fan 60, and then flows from the outlet 45c2 to the left oblique rear (the second passage portion 45b).

[0041] Here, the fan 60 is bolted to the shell 20 by bolts 65. The shell plate 21 has a fixing portion 21a for fixing the fan 60 by bolts. That is, the fixing portion 21a is a threaded seat having an internal thread that is screwed by the bolt 65. For example, two fixing portions 21a are arranged in parallel on the mounting portion 45c. The fan 60 is located on the mounting portion 45c and is mounted to the shell plate 21 by the bolts 65.

[0042] The fan 60 is fixed to the fixing portion 21a of the housing 20 by bolts, so that the fan 60 can be prevented from being displaced due to vibration or the like. Thus, the deodorizing performance of the deodorizing unit 30 can be improved. In addition, the fixing portion 21a is made into a bolt-fixed structure, so that the durability can be improved compared with the case of fixing by buckles, etc. Thus, the damage of the fixing portion 21a can be prevented, and the occurrence of a situation such as replacing the entire housing 20 due to the damage of the fixing portion 21a can be reduced.

[0043] The toilet device 10 according to the present embodiment has the above-described structure, and the operation of the deodorizing unit 30 will be described below.

[0044] The control device (not shown) provided inside the housing 20 operates the fan 60 for a predetermined time, for example, when it is detected that the user has left the toilet seat 12 or at predetermined intervals, thereby sucking the air F containing odor components from the air inlet 41 into the passage 40. At this time, the dust in the air F is captured by the first filter 50 provided at the air inlet 41. In this way, the air F can be refreshed and the dust attached to the rotating shaft 61 and the blade portion 62 of the fan 60 can be reduced.

[0045] The air F flowing into the first passage portion 45a from the air inlet 41 flows from the first passage portion 45a to the second passage portion 45b through the fan 60 due to the operation of the fan 60. The air F flowing into the second passage portion 45b passes through the second filter 55, thereby removing the odor components. The air F from which the odor components have been removed flows out from the opening 25a of the cover portion 25 through the exhaust port 43 to the toilet.

[0046] Here, for example, in the case where the channel and the shell are separate bodies, a joint is formed between the shell and the channel. In this way, the air sucked into the channel may leak from the joint. If air leaks from the inside of the channel, the deodorizing performance may be reduced, or a whistling sound may be generated when air leaks from the joint. In addition, when the shell vibrates due to the movement of the functional part housed inside the shell, a shaking sound may be generated at the joint between the shell and the channel.

[0047] In the present embodiment, the first extension portion 40a, the second extension portion 40b and the connecting portion 40c constituting the channel 40 are integrally formed on the shell plate 21 of the shell 20. Thus, the deodorizing unit 30 improves the air tightness of the channel 40. Thus, the deodorizing unit 30 can suppress the leakage of air F from the inside of the channel 40, thereby improving the quietness and the deodorizing performance. In addition, the channel 40 vibrates together with the shell plate 21, so the shaking sound can be suppressed. In addition, since there is no need to assemble the channel 40, the assembly man-hour can be reduced. Moreover, by making the channel 40 and the shell plate 21 integral, the strength of the shell plate 21 can be improved.

[0048] At this time, the passage portion 45 is formed integrally with the shell plate 21 of the shell 20 over the span from the air intake port 41 to the air exhaust port 43. Thus, since the entire passage portion 45 is formed integrally with the shell 20, the airtightness of the passage 40 can be further improved. Thus, the toilet device 10 can improve the deodorizing performance of the deodorizing unit 30.

[0049] In addition, the fan 60 is disposed between the first passage portion 45a and the second passage portion 45b. Since the fan 60 is disposed between the first passage portion 45a and the second passage portion 45b of the duct 40, the fan 60 can be disposed in consideration of the influence of the pressure loss due to the shape of the duct 40. Furthermore, since the fan 60 is disposed between the first passage portion 45a and the second passage portion 45b, the fan 60 can be disposed in the duct 40 without damaging the airtightness of the duct 40 integrated with the housing 20. Thus, the toilet device 10 can improve the deodorization performance of the deodorization unit 30.

[0050] In addition, the fan 60 is a sirocco fan. The rotating shaft 61 of the sirocco fan extends upward relative to the bottom surface 22 of the shell 20. Therefore, even when the blade portion 62 of the fan 60 is enlarged, the height dimension of the shell 20 can be suppressed from increasing. Thus, the toilet device 10 can be made compact as a whole and highly designed.

[0051] In addition, the second passage portion 45b is bent at an obtuse angle in the flow direction of the air F. This can reduce the pressure loss when the air F flows through the second passage portion 45b. Therefore, the toilet device 10 can improve the deodorizing performance of the deodorizing unit 30.

[0052] In addition, the housing 20 has a fixing portion 21a for fixing the fan 60 with bolts. The fan 60 is fixed to the fixing portion 21a of the housing 20 with bolts, so that the fan 60 can be prevented from being deviated due to vibration or the like. Thus, the deodorizing performance of the deodorizing unit 30 can be improved. In addition, the fixing portion 21a is made into a bolt-fixed structure, so that the durability can be improved compared to when it is fixed by buckles or the like. Thus, the damage of the fixing portion 21a can be suppressed, and the occurrence of situations such as replacing the entire housing due to the damage of the fixing portion 21a can be reduced.

[0053] Furthermore, in the above-mentioned embodiment, the case where the duct 40 is provided integrally with the shell plate 21 is described as an example. However, the present invention is not limited to this, and for example, the duct may be provided integrally with the shell cover 28 of the shell 20 .

[0054] In the above embodiment, the exhaust port 43 is provided on the left side of the housing 20. However, the present invention is not limited thereto, and the exhaust port may be provided on the rear or right side of the housing 20, for example.

[0055] In the above embodiment, the air inlet 41 is provided above the bowl 2a to suck the air in the bowl 2a. However, the present invention is not limited thereto, and for example, the air inlet may be provided on the front, rear, and right side of the shell 20 to suck the air in the toilet.

[0056] In addition, in the above-mentioned embodiment, the case where both the first passage portion 45a and the second passage portion 45b are integrated with the shell plate 21 of the shell 20 is described as an example. However, the form of the present invention is not limited to this, and for example, either the first passage portion 45a or the second passage portion 45b may be integrated with the shell 20. In addition, for example, the first passage portion 45a may be integrated with the shell plate 21, and the second passage portion 45b may be integrated with the shell cover 28, or the first passage portion 45a may be integrated with the shell cover 28, and the second passage portion 45b may be integrated with the shell plate 21.

[0057] The embodiment may further include the following configurations. Composition 1 A toilet flushing device, characterized in that: With: shell; and a deodorizing unit, which is disposed inside the shell and deodorizes the air in the toilet, The deodorizing unit comprises: a passage; and a fan to draw air into the interior of the channel, The channel has: a first extension portion extending from the shell; a second extension portion extending from the shell at a position different from the first extension portion; and a connecting portion connecting the first extension portion and the second extension portion, The first extension portion, the second extension portion, and the connection portion are integrally formed on the shell. Composition 2 The toilet flushing device described in configuration 1 is characterized in that: The passage has: an air intake port for sucking in air; An exhaust port to discharge the deodorized air; and a passage portion, formed by the first extension portion, the second extension portion and the connecting portion, connecting the air intake port and the air exhaust port, The passage portion is formed integrally with the shell over a span from the air intake port to the air discharge port. Composition 3 The toilet device described in configuration 2 is characterized in that the rotation axis of the fan extends upward relative to the bottom surface of the housing, and the fan discharges air in a direction orthogonal to the rotation axis. Composition 4 The toilet flushing device described in any one of configurations 2 or 3 is characterized in that: The passage portion includes: a first passage portion located on the air inlet side; and a second passage portion, located on the exhaust port side, The fan is arranged between the first passage portion and the second passage portion. Composition 5 The toilet device according to configuration 4 is characterized in that the second passage portion is bent at an obtuse angle in the air flow direction. Composition 6 The toilet device according to any one of configurations 1 to 5 is characterized in that the housing has a fixing portion for fixing the fan with a bolt.

[0058] The above is an explanation of the embodiments of the present invention. However, the present invention is not limited to the above description. Regarding the aforementioned embodiments, as long as they have the characteristics of the present invention, inventions that are appropriately designed and modified by those skilled in the art are also included in the scope of the present invention. For example, the shape, size, material, configuration, and setting method of each element of the toilet flushing device are not limited to the exemplified contents, but can be appropriately changed. In addition, as long as it is technically feasible, the various elements of the aforementioned embodiments can be combined, and as long as they include the characteristics of the present invention, the technology of combining these is also included in the scope of the present invention.

Claims

1. A toilet flushing device, Its characteristics are: With: shell; and a deodorizing unit, which is disposed inside the shell and deodorizes the air in the toilet, The deodorizing unit comprises: a passage; and a fan to draw air into the interior of the channel, The channel has: a first extension portion extending from the shell; a second extension portion extending from the shell at a position different from the first extension portion; and a connecting portion connecting the first extension portion and the second extension portion, The first extension portion, the second extension portion, and the connection portion are integrally formed on the shell.

2. The toilet flushing device according to claim 1, characterized in that: The passage has: an air intake port for sucking in air; An exhaust port to discharge the deodorized air; and a passage portion, formed by the first extension portion, the second extension portion and the connecting portion, connecting the air intake port and the air exhaust port, The passage portion is formed integrally with the shell over a span from the air intake port to the air discharge port.

3. The toilet flushing device according to claim 2, characterized in that: The fan has a rotation axis extending upward relative to the bottom surface portion of the housing, and discharges air in a direction orthogonal to the rotation axis.

4. The toilet flushing device according to claim 2 or 3, characterized in that: The passage portion includes: a first passage portion located on the air inlet side; and a second passage portion, located on the exhaust port side, The fan is arranged between the first passage portion and the second passage portion.

5. The toilet flushing device according to claim 4, characterized in that: The second passage portion is bent at an obtuse angle in the air flow direction.

6. The toilet flushing device according to claim 1, characterized in that: The case has a fixing portion for fixing the fan with bolts.

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