JP7567952B2 - Wall-hung flush toilet - Google Patents

Description

The present invention relates to flush toilets, and in particular to wall-hung flush toilets that are fixed to a wall.

2. Description of the Related Art Conventionally, flush toilets that are fixed to a wall (so-called "wall-hung flush toilets") have been known that are provided with a lighting device on the toilet body, as described in Patent Document 1, for example.
In the conventional wall-hung flush toilet described in Patent Document 1, the lighting device is provided on the underside of the toilet body and forward of the lowest end of the drain trap section, and the illumination range of the lighting device's light source extends in front and to the left and right of the toilet body when viewed in a plan view.

JP 2021-147889 A

However, in the conventional wall-hung flush toilets described above, the lighting device is located on the underside of the toilet body and forward of the lowest end of the drain trap, which means that it is not possible to illuminate the area of the floor directly below the toilet body or behind the lowest end of the drain trap.

The present invention has been made to solve the problems of the prior art described above, and aims to provide a wall-hung flush toilet that can project light from a lighting device onto a specified floor area directly below the toilet body or behind the lowest end of the drain trap.

In order to solve the above-mentioned problems, the present invention is a wall-hung flush toilet that is fixed to a wall and comprises a bowl portion for receiving waste, a drain trap portion having an inlet portion connected to the lower part of the bowl portion for discharging the waste within the bowl portion, a skirt portion that covers the outer shells of the bowl portion and the drain trap portion from the sides, and a rear wall portion formed behind the skirt portion and fixed to the wall, the toilet body being positioned above and spaced apart from the floor surface, and a lighting device fixed to the toilet body for irradiating light onto the floor surface, wherein the drain trap portion forms a curved pipe path that descends to the lowest end rearward and below the inlet portion and then rises to a top rearward and above the inlet portion, and also forms a descending pipe path that descends rearward and downward from the top of the curved pipe path, and the lighting device is provided rearward of the lowest end of the drain trap portion and within the internal space of the toilet body above the lower end of the skirt portion.
In the present invention configured in this manner, the lighting device which is fixed to the toilet body and irradiates light onto the floor surface is provided behind the lowest end of the drain trap portion of the toilet body and within the internal space of the toilet body above the lower end of the skirt portion, so that the lighting device can be concealed within the toilet body so that it is not visible to the user, thereby improving the design of the appearance of the flush toilet.
In addition, when light is irradiated toward the floor surface from a lighting device provided in the internal space of the toilet body, which is positioned above the floor surface, the light is not blocked and is irradiated onto a specified floor area directly below the toilet body or behind the lowest end of the drain trap section, making this specified floor area the brightest.
Furthermore, the light irradiated onto this specified floor area can be made to spread in a gradational manner from the center of the irradiated area, improving the appearance of the flush toilet and the aesthetics of its surroundings as seen by the user.

In the present invention, the lighting device is preferably provided in the internal space of the toilet body behind the curved pipe path through which the drain trap portion rises and below the descending pipe path.
In the present invention configured in this manner, the lighting device is provided within the internal space of the toilet body behind the curved pipe where the drain trap section rises and below the descending pipe, so that the lighting device can clearly irradiate light from behind the curved pipe where the drain trap section rises and below the descending pipe onto a specified floor area directly below the toilet body.
Therefore, the gradation of the light irradiated from the lighting device onto a specific floor area can be made clear.

In the present invention, the lighting device is preferably disposed so that a center of emitted light of maximum illuminance is located forward of the rear wall portion.
In the present invention configured in this manner, a lighting device is positioned so that the center of the light with the maximum illuminance emitted is located forward of the rear wall of the toilet body, thereby ensuring the creation of a light gradation on a specified floor area directly below the toilet body.

In the present invention, the lighting device is preferably arranged so that the emitted light is emitted forward of the lowermost end of the drain trap portion without overlapping with the lowermost end.
In the present invention configured in this manner, the lighting device is positioned so that the irradiated light does not overlap with the lowest end of the drain trap portion and is irradiated forward of this lowest end, so that the irradiated light can be reliably formed into a light gradation on a specified floor area directly below the toilet body without being blocked by the drain trap portion.

In the present invention, the lighting device is preferably arranged so that the center of the light of maximum illuminance emitted is located rearward of the lowermost end of the drain trap portion.
In the present invention configured in this manner, the lighting device is positioned so that the centre of the maximum intensity of light emitted is located behind the lowest end of the drain trap section, and a gradation of light can be formed on a specified floor area directly below the toilet body, centred around the centre of the toilet body, thereby highlighting the effect that makes the entire toilet body appear to the user as if it is floating above the floor.

In the present invention, the toilet body preferably has a wall surface which defines the internal space in which the lighting device is provided, and at least a portion of the surface of this wall surface is coated with glaze.
In the present invention configured in this manner, a glaze is applied to at least a portion of the surface of the wall that forms the internal space of the toilet body in which the lighting device is installed, so that a portion of the light emitted from the lighting device is reflected by the glaze on the wall that forms the internal space of the toilet body, and this reflected light, together with the light emitted from the lighting device, can more clearly illuminate a specified floor area directly below the toilet body.

In the present invention, the lighting device is preferably fixed to a front side of the rear wall portion.
In the present invention configured in this manner, the lighting device is fixed to the front side of the rear wall of the toilet body, making it easy to install the lighting device in the center of the left-right direction of the toilet body, and therefore making it easy to position the center of the light irradiation area within a specified floor area directly below the toilet body.

In the present invention, the lighting device is preferably fixed from the rear side of the rear wall portion by a fastening member.
In the present invention configured in this manner, the lighting device is fixed from the rear side of the rear wall of the toilet body by fastening members, so that the fastening members and the fixing points on the rear side of the rear wall of the toilet body to which the lighting device is fixed can be concealed so as not to be seen by the user.

The wall-hung flush toilet of the present invention can illuminate a specific floor area directly below the toilet body or behind the lowest end of the drain trap.

FIG. 1 is an exploded perspective view showing a wall-hung flush toilet according to an embodiment of the present invention fixed to a wall. FIG. 2 is a central side cross-sectional view showing a state in which a wall-hung flush toilet according to an embodiment of the present invention is fixed to a wall. FIG. 2 is a bottom view of a wall-hung flush toilet according to one embodiment of the present invention. FIG. 2 is a rear view of a wall-hung flush toilet according to an embodiment of the present invention. 4 is a cross-sectional view taken along line VV in FIG. 3. FIG. 1 is a perspective view of a wall-hung flush toilet lighting device according to one embodiment of the present invention, viewed obliquely from below. FIG. 1 is an exploded perspective view of a wall-hung flush toilet lighting device according to one embodiment of the present invention. FIG. 2 is a central side cross-sectional view of a lighting device fixed to a toilet body of a wall-hung flush toilet according to one embodiment of the present invention. FIG. 1 is a schematic central side cross-sectional view of a wall-hung flush toilet according to one embodiment of the present invention, showing a state in which a lighting device is irradiating light onto a floor surface. FIG. 1 is a schematic perspective view of a wall-hung flush toilet according to one embodiment of the present invention, showing a state in which a lighting device is irradiating light onto a floor surface.

A wall-hung flush toilet according to one embodiment of the present invention will be described below with reference to Figs. 1 to 10.
First, Fig. 1 and Fig. 2 respectively show an exploded perspective view and a central side cross-sectional view of a wall-hung flush toilet according to one embodiment of the present invention, showing the state in which the toilet is fixed to a wall.
As shown in Figures 1 and 2, a wall-hung flush toilet 1 according to one embodiment of the present invention has a toilet body 2 whose rear end (rear wall portion 2a) is fixed to a rear wall W within a toilet room T, and is positioned so that the bottom end of the toilet body 2 is spaced above the floor surface F.
Furthermore, as shown in Figure 1, the wall-hung flush toilet 1 of this embodiment, more specifically, is structured in such a way that the toilet body 2 is fixed from the back side of the wall by a fixing unit U provided on the back side of a wall W (the back side of the wall).
Furthermore, on the fixed unit U side, there are provided a flush water supply device 4, which is a water supply source that supplies flush water to the toilet body 2 of the flush toilet 1, and a flush operation device 6 that operates this flush water supply device 4, and these devices 4, 6 are structured to be concealed behind the wall W.
Note that in the flush toilet 1 of this embodiment, the flush water supply device 4, which is the water supply source that supplies flush water to the toilet body 2, is a form that employs a so-called "gravity-fed" water storage tank 4a, in which flush water stored in the water storage tank 4a is supplied to the toilet body 2 by gravity, but as another form of water supply source, a so-called "direct water supply pressure" water supply device may also be employed, in which flush water is supplied directly to the toilet body 2 by utilizing water supply pressure from a water supply.
In addition, a "flush valve type" water supply device or a "pump type" water supply device that supplies flush water stored in a water tank by utilizing the pressure of a pump may be used.

Next, as shown in Figures 1 and 2, the toilet body 2 of the flush toilet 1 of this embodiment is a ceramic toilet body 2 made from ceramic.
The ceramic toilet body 2 also includes a bowl portion 8 for receiving waste, and a drain trap portion 10 having an inlet portion 10a connected to the lower portion of the bowl portion 8 for discharging the waste within the bowl portion 8.
Furthermore, the ceramic toilet body 2 has a skirt portion 12 that covers the outer contours of the bowl portion 8 and the drain trap portion 10 from the sides, and a rear end portion (rear wall portion 2a) that is formed behind this skirt portion 12 and fixed to the wall W.
As shown in FIG. 2, the drain trap portion 10 of the toilet body 2 forms a curved pipe 10d that descends to the lowest end 10b rearward and below the inlet portion 10a and then rises to a top 10c rearward and above the inlet portion 10a, and also forms a descending pipe 10e that descends rearward and downward from the top 10c of the curved pipe 10d.

FIG. 3 is a bottom view of a wall-hung flush toilet according to an embodiment of the present invention.
As shown in Figures 2 and 3, a lighting device 14, details of which will be described later, is provided within the internal space S of the toilet body 2 behind the lowest end 10b of the drain trap portion 10 and above the lower end 12a of the skirt portion 12.
The lighting device 14 is fixed to the rear wall 2 a of the toilet body 2 and is capable of irradiating light onto the floor surface F below the toilet body 2 .

Next, FIG. 4 is a rear view of a wall-hung flush toilet according to one embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line VV in FIG.
As shown in Figures 1, 2, 4 and 5, in a state in which a ceramic toilet body 2 is fixed to a wall W by a fixing unit U, an inlet portion 16a, which is the upstream end (rear end) of a main water passage 16 formed on the upstream side of the bowl portion 8, is connected to a water supply pipe 18 extending downstream from the water storage tank 4a of the flush water supply device 4.
On the other hand, in the toilet body 2 made of ceramic and fixed to a wall W by a fixing unit U, the outlet portion 10f, which is the downstream end (rear end) of the drain trap portion 10, is connected to a drain pipe 20 which extends upward from the floor surface F on the back side of the wall W and then bends forward and extends.
Here, the wall-hung flush toilet 1 of this embodiment may be a so-called "wash-down" flush toilet, in which waste within the bowl portion 8 is washed away by the vertical drop in the bowl portion 8 inside the toilet body 2, or it may be another type of flush toilet, such as a so-called "siphon type" flush toilet, in which waste within the bowl portion 8 is sucked up using the siphon action and discharged to the outside through the drain trap portion 10.

Next, the lighting device 14 of the wall-hung flush toilet 1 according to the present embodiment will be described in detail with reference to FIGS. 2 to 9.
Figure 6 is a perspective view of the lighting device 14 of a wall-hung flush toilet 1 according to this embodiment, seen from diagonally below. Additionally, Figure 7 is an exploded perspective view of the lighting device 14 of a wall-hung flush toilet 1 according to this embodiment. Furthermore, Figure 8 is a central side cross-sectional view of the lighting device 14 in a state where it is fixed to the toilet body 2 of a wall-hung flush toilet 1 according to this embodiment. Additionally, Figure 9 is a schematic central side cross-sectional view of a wall-hung flush toilet 1 according to one embodiment of the present invention, showing a state in which the lighting device 14 is irradiating light onto the floor surface F.

First, as shown in Figures 2, 3, 5, 6, 8 and 9, the lighting device 14 is provided within the internal space S of the toilet body 2 below the descending pipe 10e of the drain trap portion 10 of the toilet body 2.
9, a predetermined floor surface area that is irradiated with the entire light L emitted from the lighting device 14 is defined as an "irradiated area A." The outline of this irradiation area A in a plan view is substantially circular, and is the diffusion range A of the light L irradiated onto the floor surface F.
Moreover, the light irradiated to the center O1 of this irradiation area A (diffusion range A) is referred to as "light L1 at the center O1 of the diffusion range A."
Furthermore, of the entire light L irradiated from the lighting device 14 shown in Figure 9 to the irradiation area A (diffusion range A) of the floor surface F, the light L with the maximum illuminance is defined as the "light L2 of maximum illuminance," and the point O2 within the irradiation area A where this light L2 of maximum illuminance is irradiated is defined as the "center O2 of light L."
Next, as shown in FIG. 9, the lighting device 14 is disposed so that the center O2 of the light L2 of maximum illuminance that is emitted is located forward of the rear wall 2a of the toilet body 2.
Also, as shown in Figure 9, the lighting device 14 is positioned so that the light L3 emitted to the forwardmost side does not overlap with the bottom end 10b of the drain trap portion 10 of the toilet body 2, but is emitted forward of this bottom end 10b.
Furthermore, as shown in FIG. 9, the lighting device 14 is disposed so that the center O2 of the light L2 of maximum illuminance emitted is located behind the bottom end 10b of the drain trap portion 10 of the toilet body 2.
As shown in Figures 3, 5, 6, 8, and 9, the toilet body 2 has a wall surface S1 that forms an internal space S of the toilet body 2 in which the lighting device 14 is provided, and glaze G is applied to at least a portion of the surface of this wall surface S1.

Next, as shown in Figures 3 to 9, the lighting device 14 is fixed to the front side of the rear wall 2a of the toilet body 2, although details such as the configuration of each part and the internal structure will be described later.
The lighting device 14 is fixed to the rear wall 2a of the toilet body 2 by a pair of fastening members (tapping screws 22, 22 and washers 24, 24) from the rear side of the rear wall 2a.

Next, the configuration and internal structure of each part of the illumination device 14 will be described in detail with reference to FIGS.
First, as shown in Figures 6 to 8, the components of the lighting device 14, from the rear side to the front side, are a pair of tapping screws 22, 22, a pair of washers 24, 24, a ceramic side waterproof gasket 26, a plurality (four) of body fixing screws 28, 28, 28, 28, a housing 30, a power supply harness 32, an LED board 34, a plurality (two) of board fixing screws 36, 36, a body side waterproof gasket 38, and a translucent cover 40.
The housing 30 is made entirely of a light-blocking material (a material that does not easily transmit light), and a fixing portion 30a provided on the rear side is fixed from the rear side by a pair of fastening members (tapping screws 22, 22 and washers 24, 24).
As a result, the rear side of the fixing portion 30a of the housing 30 is fixed to the front side of the rear wall portion 2a of the toilet body 2 via the ceramic side water-stopping gasket 26.
The housing 30 also has a support receiving portion 30b that protrudes forward from the rear end portion of the housing 30. A side wall 30c of the support receiving portion 30b is formed in a generally rectangular shape in a plan view so as to surround the internal space.
Furthermore, an LED board 34 is attached to an upper end of the side wall 30c of the support receiving portion 30b of the housing 30. The LED board 34 is fixed to the support receiving portion 30b by a plurality of (two) board fixing screws 36, 36.
Here, the LED board 34 serves as a light-emitting section including a plurality (four) of light sources (LED elements 34a, 34a, 34a, 34a) arranged in the left-right direction on the lower surface thereof.
Furthermore, one end of the power supply harness 32 is electrically connected to a part of the LED board 34, and the other end is electrically connected via a connector (not shown) to a power supply cable (not shown) that supplies power to the functional parts (not shown) of the flush toilet 1.

Next, as shown in FIGS. 5 to 8, the light-transmitting cover 40 is made of a light-transmitting material and is attached to the support receiving portion 30b of the housing 30 and the LED board 34 so as to cover them from above, below, left and right sides, and from the front.
In addition, the rear side of the translucent cover 40 is fixed to the front side of the fixing portion 30a of the housing 30 via a body side water-tight gasket 38 by multiple (four) body fixing screws 28, 28, 28, 28 attached from the rear side of the fixing portion 30a of the housing 30.
Moreover, the light-transmitting cover 40 is made of a single member whose exposed surface portion is integrally formed without any breaks.
Furthermore, the light-transmitting cover 40 has a surface 40a (lower surface 40a) on the irradiation side formed to be substantially flat.

Furthermore, as shown in FIGS. 6 to 8, the LED board 34 is provided with a thin plate-shaped board member 34b on the underside of which a plurality of (four) light sources (LED elements 34a, 34a, 34a, 34a) are arranged in the left-right direction.
This substrate member 34b is a fixing member that fixes multiple (four) light sources (LED elements 34a, 34a, 34a, 34a) within the translucent cover 40, and also functions as a shielding member that shields the upper part of each of the light sources 34a, 34a, 34a, 34a so that the light L emitted from each of the light sources 34a, 34a, 34a, 34a does not diffuse upward.
More specifically, since the housing 30 itself is open upward, the board member 34b of the LED board 34 itself is designed to block the light that flows upward, and the light that goes around the LED board 34 and leaks upward is blocked by the housing 30 itself, which is made of a material that is difficult for light to pass through.

Next, the housing 30 includes a light-shielding portion 30d provided at the lower end of the support receiving portion 30b.
In addition, in this light-shielding portion 30d, openings 30e provided below each of the light sources 34a, 34a, 34a, 34a are formed so as to pass through the light-shielding portion 30d in the vertical direction so as to allow light L emitted from each of the light sources 34a, 34a, 34a, 34a to pass therethrough.

Furthermore, the housing 30 also serves as a fixing member that fixes the LED board 34 (the light sources 34 a, 34 a, 34 a, 34 a) inside the light-transmitting cover 40.
In addition, the main body side waterproof gasket 38 makes the gap between the front surface of the fixed portion 30a of the housing 30, which is such a fixing member, watertight, and the rear step portion (rear step portion 40b) in the light-transmitting cover 40 that faces this front surface in the front-to-rear direction, and also functions as a light-blocking auxiliary member that assists in blocking light so that light L emitted from each light source 34a, 34a, 34a, 34a does not shine out from the gap between the front surface of the fixed portion 30a of the housing 30 and the rear step portion 40b in the light-transmitting cover 40.

Next, the operation of the wall-hung flush toilet 1 according to one embodiment of the present invention will be explained with reference to FIGS.
FIG. 10 is a schematic perspective view of a wall-hung flush toilet 1 according to this embodiment, showing a state in which a lighting device 14 is irradiating light onto a floor surface F.
According to the wall-hung flush toilet 1 of the present embodiment described above, the lighting device 14 which is fixed to the toilet body 2 and irradiates light L onto the floor surface F is provided behind the lowest end 10b of the drain trap portion 10 of the toilet body 2, and is provided within the internal space S of the toilet body 2 above the lower end 12a of the skirt portion 12.
This allows the lighting device 14 to be concealed within the toilet body 2 so that it is not visible to the user, improving the design of the exterior of the flush toilet 1.
In addition, when light L is irradiated toward the floor surface F from the lighting device 14 provided in the internal space S of the toilet body 2 which is positioned at a distance above the floor surface F, the light L is not blocked and is irradiated onto a specified floor surface area A directly below the toilet body 2 and behind the lowest end portion 10b of the drain trap portion 10, making this specified floor surface area A the brightest.
Furthermore, the light L irradiated onto this specified floor area A can be made to spread in a gradational manner from the center O2 of the light L2 with the maximum illuminance in that irradiation area A, thereby improving the appearance of the flush toilet 1 as seen by the user and the aesthetics of its surroundings.

Furthermore, with the wall-hung flush toilet 1 of this embodiment, the lighting device 14 is provided within the internal space S behind the ascending bent pipe 10d of the drain trap section 10 of the toilet body 2 and below the descending pipe 10e.
Therefore, the lighting device 14 can clearly irradiate light from below the descending pipe 10 e of the drain trap portion 10 of the toilet body 2 onto a specified floor area A directly below the toilet body 2 .
Therefore, the gradation LG of the light L irradiated from the lighting device 14 onto the specified floor area A can be made clear.

Furthermore, with the wall-hung flush toilet 1 of this embodiment, the lighting device 14 is positioned so that the centre O2 of the light L2 with the maximum illuminance emitted is located forward of the rear wall 2a of the toilet body 2.
This ensures that a gradation LG of light L is formed in a specified floor area A directly below the toilet body 2.

Furthermore, according to the wall-hung flush toilet 1 of this embodiment, the lighting device 14 is positioned so that the light L2 emitted to the forward-most side does not overlap with the bottom end 10b of the drain trap section 10 of the toilet body 2, but is emitted forward of this bottom end 10b.
This ensures that the irradiated light L is not blocked by the drain trap portion 10 of the toilet body 2, and a gradation LG of the light L can be formed reliably in a specified floor area A directly below the toilet body 2.

Furthermore, according to the wall-hung flush toilet 1 of this embodiment, the lighting device 14 is positioned so that the center O2 of the light L2 of maximum illuminance emitted is located rearward of the bottom end 10b of the drain trap section 10 of the toilet body 2.
This allows a gradation LG of light L to be formed in a specified floor area A directly below the toilet body 2, centered around the center of the toilet body 2, as shown in Figure 10, thereby highlighting the effect of making the entire toilet body 2 appear to the user as if it is floating above the floor F.

Furthermore, with the wall-hung flush toilet 1 of this embodiment, a glaze G is applied to at least a portion of the surface of the wall surface S1 that forms the internal space S of the toilet body 2 in which the lighting device 14 is provided.
As a result, a portion of the light L emitted from the lighting device 14 is reflected by the glaze G of the wall surface S1 that forms the internal space S of the toilet body 2, and this reflected light, together with the light L emitted from the lighting device 14, can more clearly illuminate a specified floor area A directly below the toilet body 2.

Furthermore, with the wall-hung flush toilet 1 according to this embodiment, the lighting device 14 is fixed to the front side of the rear wall 2 a of the toilet body 2 .
This makes it easier to install the lighting device 14 in the center of the left-right direction of the toilet body 2, as shown in Figures 3 and 5, making it easier to position the center O2 of light L2 with maximum illuminance in the irradiation area A of the light L within a specified floor area A directly below the toilet body 2.

Furthermore, with the wall-hung flush toilet 1 of this embodiment, as shown in Figures 4 and 8, the lighting device 14 is fixed from the rear side of the rear wall 2a of the toilet body 2 by a pair of fastening members (tapping screws 22, 22 and washers 24, 24).
This makes it possible to conceal the fixing points on the rear side of the rear wall 2a of the toilet body 2 to which the lighting device 14 is fixed by fastening members (tapping screws 22, 22 and washers 24, 24) and the fastening members (tapping screws 22, 22 and washers 24, 24) so that they are not visible to the user.

LIST OF SYMBOLS 1 Wall-hung flush toilet 2 Toilet body 2a Rear end of toilet body, rear wall 4 Flush water supply device 4a Water storage tank 6 Flush operation device 8 Bowl 10 Drain trap 10a Inlet of drain trap 10b Bottom end of drain trap 10c Top of drain trap 10d Bent pipe of drain trap 10e Descending pipe of drain trap 10f Outlet of drain trap 12 Skirt 12a Bottom end of skirt 14 Lighting device 16 Main water conduit 16a Inlet of main water conduit 18 Water supply pipe 20 Drain pipe 22 Tapping screw 24 Washer 26 Ceramic side water stop packing 28 Screw for fixing main body 30 Housing (fixing part of lighting device, fixing member)
30a: Fixing portion of the housing (fixing portion of the lighting device)
30b Support receiving portion of housing 30c Side wall of support receiving portion of housing 30d Light shielding portion of housing 30e Opening of light shielding portion of housing 32 Power supply harness 34 LED board (light emitting portion)
34a LED element (light source)
34b Base plate member (fixing member)
36 Board fixing screw 38 Main body side water stop packing (light shielding auxiliary member)
40: Light-transmitting cover 40a: Lower surface of the light-transmitting cover (surface on the irradiated side)
40b Rear side step portion in translucent cover A: Predetermined floor area to which light is irradiated, light irradiation area on the floor, light diffusion range F: Floor surface inside the toilet room and behind the wall G: Glaze L: Irradiated light L1: Light irradiated to the center of the irradiation area (diffusion range) L2: Light with maximum illuminance L3: Light irradiated to the frontmost side LG: Light gradation O1: Center of the floor irradiation area, center of the light diffusion range O2: Point to which light with maximum illuminance is irradiated within the light irradiation area (center of light)
S: Internal space of the toilet body S1: Wall surface forming the internal space of the toilet body T: Toilet room U: Fixed unit W: Wall

Claims (8)

A wall-hung flush toilet that is fixed to a wall,
a toilet body provided with a bowl portion for receiving waste, a drain trap portion having an inlet portion connected to the lower portion of the bowl portion for discharging waste within the bowl portion, a skirt portion for laterally covering the outer contours of the bowl portion and the drain trap portion, and a rear wall portion formed behind the skirt portion and fixed to the wall, the toilet body being disposed above and spaced apart from a floor surface;
A lighting device that is fixed to the toilet body and irradiates light onto a floor surface,
The drain trap section forms a curved pipe line that descends to a lowest end portion rearward and below the inlet section and then ascends to a top portion rearward and above the inlet section, and also forms a descending pipe line that descends rearward and downward from the top portion of the curved pipe line,
A wall-hung flush toilet, wherein the lighting device is provided rearward of the lowermost end of the drain trap portion and within the internal space of the toilet body above the lower end of the skirt portion. The wall-hung flush toilet according to claim 1, wherein the lighting device is provided in the internal space of the toilet body behind the curved pipe where the drain trap part rises and below the descending pipe. The wall-hung flush toilet according to claim 1, wherein the lighting device is positioned so that the center of the light with the maximum illuminance emitted is located forward of the rear wall. The wall-hung flush toilet according to claim 1, wherein the lighting device is positioned so that the emitted light is emitted forward of the lowest end of the drain trap section without overlapping with the lowest end of the drain trap section. The wall-hung flush toilet according to claim 4, wherein the lighting device is positioned so that the center of the light with the maximum illuminance emitted is located behind the bottom end of the drain trap section. The wall-hung flush toilet according to claim 4, wherein the toilet body has a wall surface that forms the internal space in which the lighting device is provided, and at least a portion of the surface of the wall surface is coated with glaze. A wall-hung flush toilet according to claim 1, wherein the lighting device is fixed to the front side of the rear wall. A wall-hung flush toilet according to claim 1, in which the lighting device is fixed from the rear side of the rear wall with a fastening member.

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