JP2001271502A - Bathroom ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathroom ceiling capable of surely preventing the direct falling of dew condensation from a domy ceiling panel. SOLUTION: In the bathroom ceiling having the ceiling panel disposed to the upper section of a wall panel, the ceiling panel is formed of a resin mold in a domy shape, and hydrophilic sections and hydrophobic and water-repellent sections along the inclined direction are formed alternately onto a surface on the indoor side of the ceiling panel in the orthogonal direction to the inclined direction while the intervals of the adjacent hydrophilic sections are set at a fixed value, where grown condensation can be divided to the adjacent hydrophilic sections before the condensation reaches the holding capacity or more of the hydrophilic sections. The fixed value is set at a value from 1 mm to 5 mm, and the hydrophilic sections and the hydrophobic and water-repellent sections are formed alternately by executing hydrophilic or hydrophobic and water-repellent treatment to the surface of a base material made of a hydrophobic and water-repellent or hydrophilic resin in the ceiling panel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling of a bathroom such as a system bathroom, and more particularly to a bathroom ceiling for preventing dew condensation generated on a dome-shaped ceiling panel from directly falling into the bathroom.

[0002]

2. Description of the Related Art Conventionally, as a bathroom ceiling of this type, for example, Japanese Patent Application Laid-Open No.
No. 1 discloses this. The former (JP-A-7-2170)
No. 50), the bathroom ceiling disclosed in FIG.
As the ceiling member 50 disposed at a predetermined angle,
Adhering to the lower surface of the ceiling member 50 by using an uneven groove-shaped plate 51 having a concave portion 51a and a convex portion 51b shown in (a) and a saw blade-shaped plate 52 having a valley portion 52a and a mountain portion 52b shown in (b). The condensed condensation is transferred to the concave portion 51a, the convex portion 51b, or the valley portion 52a.
Flow along the ridges 52b, that is, dew condensation
By collecting and flowing in the valley portion 52a, it is possible to prevent dew condensation from directly dropping into a bathtub or a washing place.

As shown in FIG. 7, the bathroom ceiling disclosed in the latter (Japanese Patent Laid-Open No. 2-85451) has an arc-shaped, rippled, saw-toothed surface on the surface of a ceiling member 61 disposed in an inclined state. A concave portion 61a or a convex portion 61b having a triangular wave shape or the like is formed, and the convex portion 61b prevents the dew condensation from diffusing to the other surface. It is configured to flow down from Further, as a material which solves the prevention of the drop of dew condensation from the viewpoint of material, for example, a material in which the entire surface of the ceiling member on the indoor side is made hydrophilic is known.

[0004]

However, in the bathroom ceiling shown in FIGS. 6 and 7, the surface of the ceiling members 50, 61 provided in an inclined state has uneven portions 51a, 51a.
b, 61a, 61b and valleys 52a, 52b are formed,
Since the condensed water collected along the concave portions 51a and 61a and the valley portion 52a flows, the ceiling members 50 and 6
When the inclination angle of 1 is large, the collected dew drops down well along the recesses 51a, 61a and the like, and the dew is prevented from dropping directly into a bathtub or a washing place.

However, when the inclination angle of the ceiling members 50 and 61 is small, there is a case where the dew does not flow down well along the concave portions 51a and 61a, and in such a case, the dew forms along the concave portions 51a and 61a. There is a problem in that the dew grows along with the gentle flow to form large dew, and when the dew grows to a predetermined size, the dew easily falls directly on a bathtub or a washing place. In addition, in the case of a ceiling member having a hydrophilic surface, the dew attached to the surface tends to spread in a direction other than the flowing direction. Therefore, when the inclination angle of the ceiling member is small, the surrounding dew is collected and grown. However, there is a problem that the grown dew easily falls directly.
/ 10 was remarkable.

By the way, in recent system bathrooms, a dome-shaped ceiling panel is used in order to obtain a sense of openness by, for example, improving the design and raising the ceiling surface. In the case of panels, due to restrictions on the height of the bathroom in the house,
It is difficult to set a small round shape, and a relatively large round shape (that is, a gentle inclination angle) is set. In general, the inclination angle in the vicinity of the zenith is more gradually set among the ceiling panels. In the case of such a ceiling panel, the structure of the ceiling members 50 and 61 and the entire surface are hydrophilic. With such a structure, it is difficult to reliably prevent the direct drop of dew.

In view of such circumstances, the present invention has made intensive studies on the relationship between the shape of the hydrophilic portion and the hydrophobic / water-repellent portion provided on the dome-shaped ceiling panel and the growth and drop of dew. -It has been found that by setting the position and the dimensional relationship of the water-repellent portion to a predetermined value, it is possible to reliably prevent condensation from falling even if the inclined surface of the ceiling panel is gentle.

Another object of the present invention is to provide a bathroom ceiling capable of reliably preventing dew condensation from directly falling from a dome-shaped ceiling panel. The object of the invention described in claim 2 is to provide, in addition to the object of the invention described in claim 1, a bathroom ceiling capable of more reliably preventing dew condensation from dropping.
Another object of the present invention is to provide a bathroom ceiling in which a hydrophilic portion and a hydrophobic / water-repellent portion can be easily formed on a ceiling panel. Another object of the present invention is to provide a bathroom ceiling capable of suppressing unnecessarily growth of dew condensation and more reliably preventing the fall thereof, in addition to the objects of the first to third inventions. is there.

[0009]

In order to achieve the above object, according to the present invention, there is provided a bathroom ceiling having a ceiling panel disposed above a wall panel.
The ceiling panel is formed in a dome shape by resin molding, and hydrophilic portions along the inclined direction and hydrophobic / water-repellent portions are alternately formed on the indoor side surface in a direction orthogonal to the inclined direction, and adjacent hydrophilic portions are formed. Is set to a predetermined value that allows the dew condensation to be divided into adjacent hydrophilic portions before the grown dew reaches the holding capacity of the hydrophilic portion.
Further, the invention according to claim 2 is characterized in that the predetermined value is set to 1 mm or more and 5 mm or less.

[0010] With this configuration, the condensation formed on the indoor side surface of the ceiling panel due to the adhesion of moisture in the bathroom causes the hydrophilic portion and the hydrophobic / water repellent alternately provided on the dome-shaped inclined surface. It grows while flowing down in the inclined direction along the hydrophilic part of the part. At this time, the dew that has grown under the flow along the hydrophilic portion while the hydrophobic / water-repellent portion is prevented from spreading in a direction other than the flow-down direction, the distance between adjacent hydrophilic portions is one.
Since it is set to be not less than 5 mm and not more than 5 mm, the hydrophilic portion is divided into adjacent hydrophilic portions before reaching the dew holding capability or more, and further flows down along each hydrophilic portion.
As a result, the dew condensation flowing down each hydrophilic portion does not exceed the holding capacity of the hydrophilic portion, and the dew condensation satisfactorily flows down to the wall panel, thereby reliably preventing the dew condensation from directly falling into a bathtub or a washing place. You.

The invention according to claim 3 is characterized in that the ceiling panel is provided with a hydrophilic or hydrophobic / water-repellent treatment on the surface of a hydrophobic / water-repellent or hydrophilic resin substrate so that the hydrophilic panel has a hydrophilic portion. And a hydrophobic / water-repellent portion are alternately formed. With such a configuration, for example, a hydrophobic resin made of a thermoplastic resin or a thermosetting resin is used.
A hydrophilic portion can be formed on the surface of a water-repellent resin substrate by applying a pattern coating process, a chemical process, or a physical process with a hydrophilic paint, so that the hydrophilic portion and the hydrophobic The formation of the water portion can be performed easily.

Further, the invention according to claim 4 is characterized in that the width of the hydrophilic portion is set to 1 mm or more and 5 mm or less. With such a configuration, in the hydrophilic portion set to have a width of 1 mm or more and 5 mm or less, dew condensation grows to a size that is easily split, and unnecessary growth is suppressed, and the fall thereof is more reliably prevented. .

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show an embodiment in which a bathroom ceiling according to the present invention is applied to a system bathroom, FIG. 1 is a schematic perspective view of the inside, FIG. 2 is a plan view of a main part of a ceiling panel, FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, and FIGS. 4 and 5 are schematic diagrams showing a flowing down state of dew condensation.

In FIG. 1, a bathroom 1 includes a waterproof pan 2,
Four wall panels 3a to 3d (wall panel 3d is not shown)
And the ceiling panel 4 and the like. A bathtub 5 is arranged on the wall panel 3a side of the waterproof pan 2, and a washing place 6 is provided on the waterproof pan 2 and a counter 8 is arranged on the wall panel 3b side of the washing pan 6 on which a mirror 7 and the like are attached. Have been. Further, a mirror panel 11 in which the mirror 7, the storage shelf 9, the lighting device 10, and the like are integrated is disposed on the wall panel 3b.

The ceiling panel 4 is formed of, for example, a ceiling member 4a arranged above a bathtub 5 and a ceiling member 4b arranged above a washing place 6. The two ceiling members 4a, 4a
Each of b has a dome shape, and a substantially arc-shaped inclined surface is formed on the surface thereof. Further, the ceiling material 4a and the ceiling material 4b are provided with a stepped portion 13 at a connection portion between the ceiling materials 4a and 4b, for example, by disposing the ceiling material 4a at a high position and the ceiling material 4b at a low position. ing. Note that the ceiling member 4 is not limited to the connection structure of the two ceiling members 4 a and 4 b having the step portion 13, and it is of course possible to use one dome-shaped ceiling member.

The ceiling material 4a of the ceiling panel 4
4b is a hydrophobic / water-repellent thermoplastic resin (PS,
(ABS, PE, etc.) or polyester SMC or the like, and a plurality of linear hydrophilic portions 14 of a predetermined width are formed on the inclined surface of the inside of the bathroom 1 over substantially the entire area in the inclined direction A. Are formed at predetermined intervals. Therefore, on the surfaces of the ceiling panels 4a and 4b, the hydrophobic / water-repellent portions 15 and the hydrophilic portions 14 where the resin base material is exposed are alternately formed in a direction (width direction) orthogonal to the inclined direction A. Will be.

As shown in FIGS. 2 and 3, the hydrophilic portion 14 is formed to a predetermined thickness (for example, H = 10 μm) by, for example, performing a pattern coating process on a hydrophilic paint.
The distance between adjacent hydrophilic portions 14 is L = 1 mm to 5 mm
(Preferably L = 1 mm to 3 mm), and the width of the hydrophilic portion 14 is set to W = 1 mm to 5 mm. The formation of the hydrophilic portion 14 is not limited to the above-described coating treatment, but may be formed by a chemical treatment with an acid or an alkali or a physical treatment such as heat, light, or imparting a fine shape.

Here, a description will be given of test results regarding the shape of the hydrophilic portion 14 of the ceiling panel 4 and the state of dew condensation. First, as a sample, a PS resin 30 cm × 80 c
A static contact angle of 30 ° C. on the surface of a sample plate of mx 5 mm
And the same hydrophilic paint was applied at a distance L = 1 mm and a width W =
A sample 2 coated at 5 mm was prepared.

As a comparative example, Comparative Example 1 in which the coating material was applied to the surface of the sample plate at an interval L = 6 mm and a width W = 6 mm, and the coating material was applied at an interval L = 1 mm and a width W = 7 mm
Comparative Example 2 in which the paint was applied, and Comparative Example 3 in which the paint was applied to the entire surface.
It was created. Then, these samples 1 and 2 and comparative examples 1 to
3 is set at an inclination angle of 4/10, 3/10, the external temperature is 0 ° C., the internal temperature is 40 ° C., and the humidity is 95%.
%, And the amount of dew dropping during 1 hour and 30 minutes was measured. Table 1 shows the results.

[0020]

[Table 1]

From Table 1, when the inclination angle is 4/10, there is almost no difference in the amount of dew drop between Samples 1 and 2 and Comparative Examples 1 to 3, but the inclination angle is gently 3/10. , The amount of dew drops in the case of sample 1 and sample 2,
It can be seen that Comparative Examples 1 to 3 increase with respect to Samples 1 and 2. Regarding the difference between the results of Samples 1 and 2 and Comparative Examples 1 to 3, the following may be considered.

That is, in the case of the samples 1 and 2, as shown in FIG. 4, by setting the interval L and the width W of the hydrophilic portions 14 to predetermined values, the dew condensation K0 that grows while flowing down the hydrophilic portions 14 is reduced. When it grows to a predetermined size and becomes dew condensation K1,
The hydrophilic portions 14 on both sides adjacent to the outer peripheral edge of the condensation K1
By contacting the ends of the hydrophilic portions 14 on both sides, respectively.
Three dew condensation K2 due to suction force (pulling force) in the direction
To K4, and each of the divided dew condensation K2 to K4 flows down in each hydrophilic portion 14 in the flowing direction B.

In other words, the dew condensation K1 is divided by the hydrophilic portions 14 whose spacing L and width W are set to predetermined values before reaching the limit of the dew holding ability of each hydrophilic portion 14, as in the above-described embodiment. Even under severe conditions, the amount of dew drops is small, and in the case of the actual ceiling panel 4, the drop of dew is reliably prevented.

On the other hand, for example, in the case of Comparative Example 3,
As shown in FIG. 5, since the entire surface is the hydrophilic portion 14, the dew condensation K 0 spreads beyond the downstream direction B and collects each dew, exceeding the limit of the dew holding capability of the dew condensation K 6 and the dew condensation K 6 and the hydrophilic portion 14. It grows to the size and this dew K
6 will drop and the amount will increase significantly. Also,
In the case of the comparative example 1, since the interval L between the adjacent hydrophilic portions 14 is large, the grown dew is difficult to be divided, and the amount of the fall is increased. In the case of the comparative example 2, the width W of the hydrophilic portion 14 itself is reduced. Is large, the dew grows to a size larger than the holding capacity, and the amount of the drop increases. When the distance L between the hydrophilic portions 14 is less than 1 mm, the dew condensation itself is not divided, so that the effect of preventing dew condensation and drop of the present invention is not obtained.
Also, it has been confirmed that when the width W of the hydrophilic portion 14 is less than 1 mm, the width is too narrow to obtain the effect of preventing dew condensation and dropping.

As described above, in the ceiling panel 4 of the above embodiment, the dome-shaped ceiling members 4a, 4b
On the inclined surface, a line-shaped hydrophilic portion 14 and a hydrophobic / water-repellent portion 15 are alternately formed in the width direction along the inclined direction A, and the distance L between the adjacent hydrophilic portions 14 is 1 mm to 5 mm.
(Preferably 1 mm to 3 mm) and the width W of the hydrophilic portion 14 is set to 1 mm to 5 mm,
When the dew flowing down along the hydrophilic portion 14 grows to a predetermined size corresponding to the interval L, the dew is divided to flow down in the adjacent hydrophilic portion 14 so that the wall panels 3b, 3
It is possible to flow downward from d, and it is possible to reliably prevent dew condensation that directly falls from the ceiling panel 4 to the bathtub 5 or the washing place 6.

In particular, since the hydrophilic portion 14 is formed over the entire sloped surfaces of the ceiling members 4a and 4b, even if the dome portion of the dome-shaped ceiling panel 4 is gradually inclined, dew condensation occurs at the hydrophilic portion 14. It is possible to flow down to both sides (sides of the wall panels 3b and 3d) while preventing the falling, and it is possible to reliably prevent the drop of dew condensation on the dome-shaped ceiling panel 4.

Further, the ceiling material 4a, 4b formed of a resin having hydrophobicity and water repellency is coated with a hydrophilic paint in a linear pattern on the surface of the base material.
Since the hydrophilic portion 14 and the hydrophobic / water-repellent portion 15 can be alternately formed on the surface of the ceiling 4b, the ceiling members 4a and 4b can be easily manufactured, and the ceiling panel 4 itself can be formed at low cost. be able to. Further, by providing the hydrophilic portion 14, the design of the dome-shaped ceiling panel 4 itself of the bathroom 1 is not impaired, and the hydrophilic panel 14 can give a design change to the ceiling panel 4. The design value can be improved.

In the above embodiment, the ceiling material 4
Although the hydrophobic and water-repellent resin was used for the base material of a and 4b, and the hydrophilic portion 14 was formed on the surface thereof, the present invention is not limited to this. In the case of the resin described above, a hydrophobic / water-repellent portion 15 is formed on the surface. In this case, the hydrophilic portion 14 is slightly recessed as compared with the hydrophobic / water-repellent portion 15, so that the flow of dew condensation becomes smoother and the growth thereof is further suppressed. In addition, the shape of the hydrophilic portion 14 in the above embodiment is not limited to a linear shape along the inclination direction A, but deviates from the gist of each invention of the present invention, for example, adopting a waveform shape along the inclination direction as a whole. Various changes can be made without departing from the scope.

[0029]

As described in detail above, claim 1 or 2
According to the invention described above, the hydrophilic portion and the hydrophobic / water-repellent portion along the inclined direction are alternately formed on the inclined surface of the dome-shaped ceiling panel in a direction substantially orthogonal to the inclined direction, and the adjacent hydrophilic portions are formed. Is set to a predetermined value of 1 mm to 5 mm at which the dew condensation can be divided into adjacent hydrophilic portions before the grown dew condensation becomes equal to or greater than the dew holding capability of the hydrophilic portion. Before the capacity is exceeded, the water can be divided into adjacent hydrophilic portions and flow down along each hydrophilic portion, so that dew condensation can be reliably prevented from dropping directly into a bathtub or a washing place.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, for example, a hydrophobic / water-repellent resin base made of a thermoplastic resin or a thermosetting resin is used. A hydrophilic part can be formed by subjecting the surface to a pattern coating treatment with a hydrophilic paint, a chemical treatment, or a physical treatment, making it easy to form a hydrophilic part and a hydrophobic / water-repellent part on the ceiling panel. Can be done to
Inexpensive ceiling panels can be obtained.

According to the fourth aspect of the invention, in addition to the effects of the first to third aspects, the width of the hydrophilic portion is set to 1 mm or more and 5 mm or less. It is possible to grow to a size that is easy to be divided and to suppress the growth more than necessary, so that it is possible to more reliably prevent the direct fall of the dew condensation.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of the inside of a system bathroom to which a ceiling according to the present invention is applied.

FIG. 2 is a plan view of a main part of the ceiling panel.

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

FIG. 4 is a schematic view showing a falling state of the dew condensation.

FIG. 5 is a schematic view showing another flowing state of the dew condensation.

FIG. 6 is a sectional view of a ceiling member of a conventional bathroom.

FIG. 7 is a perspective view of another ceiling member of a conventional bathroom.

[Explanation of symbols]

 1 bathroom 3a-3d wall panel 4 ceiling panel 4a, 4b ceiling material 5 ·············································································································· ····· Hydrophobic / water-repellent part L · ··················································· ..Inclination direction B

Claims (4)

[Claims] 1. A bathroom ceiling having a ceiling panel provided on an upper part of a wall panel, wherein the ceiling panel is formed in a dome shape by resin molding, and a hydrophilic portion along a slope direction and a hydrophobic / hydrophobic portion are formed on the indoor side surface. The water-repellent portion and alternately formed in a direction substantially perpendicular to the inclined direction, and the interval between the adjacent hydrophilic portions, the dew condensation on the adjacent hydrophilic portion before the grown dew becomes more than the retention capacity of the hydrophilic portion. A bathroom ceiling set to a predetermined value that can be divided. 2. The bathroom ceiling according to claim 1, wherein said predetermined value is set to 1 mm or more and 5 mm or less. 3. The ceiling panel is provided with a hydrophilic portion and a hydrophobic / water repellent portion by subjecting the surface of a hydrophobic / water repellent or hydrophilic resin base material to a hydrophilic / hydrophobic / water repellent treatment. The bathroom ceiling according to claim 1 or 2, wherein are alternately formed. 4. The method according to claim 1, wherein the width of the hydrophilic portion is set to 1 mm or more and 5 mm or less.
Bathroom ceiling according to any of the above.