JP2021143535A

JP2021143535A - Building board

Info

Publication number: JP2021143535A
Application number: JP2020043535A
Authority: JP
Inventors: 早希古谷; Saki Furuya; 亜里彩三宅; Arisa Miyake
Original assignee: KMEW Co Ltd
Current assignee: KMEW Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-09-24
Anticipated expiration: 2040-03-12
Also published as: JP7397724B2

Abstract

To provide a building board in which a specific part is hardly stained.SOLUTION: A building plate 100 has a projection 3 projecting in the normal direction X from a reference surface 2 on the surface of a base material 1. The projection 3 is formed in a shape extending in the vertical direction. The projection 3 has an upper end surface 31, a lower end surface 32, and a side surface 33 between the upper end surface 31 and the lower end surface 32. The upper end surface 31 is formed obliquely downward from the reference surface 2 in the normal direction X. The lower end surface 32 is formed obliquely upward from the reference surface 2 in the normal direction X. The side surface 33 is formed in an arc shape projecting in the projecting direction of the projecting part 3 in the transverse section of the projecting part 3. A portion where water is concentrated and flows is reduced.SELECTED DRAWING: Figure 1

Description

本発明は、建築板に関する。より詳細には、本発明は、凸部を有する建築板に関する。 The present invention relates to a building board. More specifically, the present invention relates to a building board having a convex portion.

特許文献１には、外壁等に使用される建築板が記載されている。この建築板は、基材の表面に、立体的な形状を有する立体形状部が複数形成されている。立体形状部は、基準面上に位置する多角形状の輪郭と、輪郭に囲まれた領域内における基準面の法線上で、かつ前記基準面とは異なる高さに位置する一点と、側周面とを備えている。側周面は、前記輪郭を構成する一辺の両端の点と、前記一点との三つの点を結ぶ三角形で囲まれた面を複数有し、複数の面が輪郭を構成するすべての辺に対応して設けられる。すなわち、立体形状部は、ほぼ四角錐状に形成された形状である。 Patent Document 1 describes a building board used for an outer wall or the like. In this building board, a plurality of three-dimensional shaped portions having a three-dimensional shape are formed on the surface of the base material. The three-dimensional shape portion includes a polygonal contour located on the reference plane, a point located on the normal line of the reference plane in the area surrounded by the contour and at a height different from the reference plane, and a side peripheral surface. And have. The side peripheral surface has a plurality of points surrounded by a triangle connecting the points at both ends of one side forming the contour and the three points connecting the three points, and the plurality of faces correspond to all the sides forming the contour. Is provided. That is, the three-dimensional shape portion has a shape formed in a substantially quadrangular pyramid shape.

特開２０１８−５９３４７号公報JP-A-2018-59347

しかし、特許文献１に記載の建築板では、雨水等の水が表面を伝って流れ落ちる際に、立体形状部の側周面は流れにくく、輪郭の部分には流れやすい傾向にある。したがって、立体形状部の輪郭部分が汚れやすくなるという問題があった。 However, in the building board described in Patent Document 1, when water such as rainwater flows down along the surface, the side peripheral surface of the three-dimensional shape portion tends to be difficult to flow, and the contour portion tends to flow easily. Therefore, there is a problem that the contour portion of the three-dimensional shape portion is easily soiled.

本発明は、上記事由に鑑みてなされており、特定の部分が汚れにくい建築板を提供することを目的とする。 The present invention has been made in view of the above reasons, and an object of the present invention is to provide a building board in which a specific portion is not easily soiled.

本発明の一態様に係る建築板は、基材の表面上の基準面から法線方向に突出する凸部を有する建築板である。前記凸部は、上下方向に延びる形状に形成され、かつ上端面、下端面及び当該上端面と当該下端面との間の側面を有して形成されている。前記上端面は、前記基準面から前記法線方向に向かって斜め下方に傾斜して形成されている。前記下端面は、前記基準面から前記法線方向に向かって斜め上方に傾斜して形成されている。前記側面は、前記凸部の横断面において、該凸部の突出方向に凸となる弧状に形成されている。 The building board according to one aspect of the present invention is a building board having a convex portion protruding in the normal direction from a reference plane on the surface of the base material. The convex portion is formed in a shape extending in the vertical direction, and has an upper end surface, a lower end surface, and a side surface between the upper end surface and the lower end surface. The upper end surface is formed so as to be inclined diagonally downward from the reference surface toward the normal direction. The lower end surface is formed so as to be inclined diagonally upward from the reference surface toward the normal direction. The side surface is formed in an arc shape that is convex in the projecting direction of the convex portion in the cross section of the convex portion.

本発明によれば、水が集中して流れる部分が少なくなり、特定の部分が汚れにくい、という利点がある。 According to the present invention, there is an advantage that the portion where water flows in a concentrated manner is reduced and a specific portion is less likely to be contaminated.

図１Ａは、本発明に係る建築板の一実施形態を示す正面図である。図１Ｂは、同上の一部を示す正面図である。図１Ｃは、同上の一部を示す断面図である。FIG. 1A is a front view showing an embodiment of a building board according to the present invention. FIG. 1B is a front view showing a part of the same. FIG. 1C is a cross-sectional view showing a part of the above. 図２Ａは、本発明に係る建築板の一実施形態を示す斜視図である。図２Ｂは、図２ＡにおけるＢ−Ｂ断面図である。図２Ｃは、図２ＡにおけるＣ−Ｃ断面図である。図２Ｄは、図２ＡにおけるＤ−Ｄ断面図である。FIG. 2A is a perspective view showing an embodiment of a building board according to the present invention. FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A. FIG. 2C is a cross-sectional view taken along the line CC in FIG. 2A. FIG. 2D is a cross-sectional view taken along the line DD in FIG. 2A. 図３Ａは、本発明に係る建築板の変形例を示す一部の正面図である。図３Ｂは、同上の他の変形例を示す一部の正面図である。図３Ｃは、同上のさらに他の変形例を示す一部の正面図である。FIG. 3A is a partial front view showing a modified example of the building board according to the present invention. FIG. 3B is a partial front view showing another modification of the same. FIG. 3C is a partial front view showing still another modification of the same.

（実施形態）
図１Ａは、本実施形態に係る建築板１００を示している。建築板１００は、外壁を形成するための外装材である。建築板１００は、窯業系サイディング材により構成されているが、これに限らず、建築板１００は金属系サイディング材などの他の材質で形成されたサイディング材であってもよい。本実施形態の建築板１００は、横張り（横長状態での設置）および縦張り（縦長状態での設置）のいずれにも対応可能であるが、図１Ａの横張りされた状態に基づいて説明する。したがって、建築板１００は、上下方向に平行な方向が幅方向となり、左右方向に平行な方向が長さ方向となる。また幅方向および長さ方向に直交する方向が前後方向となる。 (Embodiment)
FIG. 1A shows a building board 100 according to this embodiment. The building board 100 is an exterior material for forming an outer wall. The building board 100 is made of a ceramic siding material, but the building board 100 is not limited to this, and the building board 100 may be a siding material made of another material such as a metal siding material. The building board 100 of the present embodiment can be used for both horizontal (horizontal installation) and vertical (vertical installation), but the description will be based on the horizontal installation of FIG. 1A. do. Therefore, in the building board 100, the direction parallel to the vertical direction is the width direction, and the direction parallel to the left-right direction is the length direction. Further, the direction orthogonal to the width direction and the length direction is the front-rear direction.

建築板は、基材１により主体が構成されている。基材１は、セメントを主成分とする無機質板の硬化物である。基材１の表面には、図１Ａ〜Ｃに示すように、複数の凸部３と複数の凹部４とが形成されている。すなわち、建築板１００は、基材１の表面に凸部３と凹部４とを含む凹凸形状を有することで構成されている。凸部３及び凹部４は、硬化前の基材１である無機質板の平坦な表面に、例えば、ロール型やプレス型を用いて、凸部３と凹部４とに対応する対応する形状を転写して形成することができる。 The building board is mainly composed of the base material 1. The base material 1 is a cured product of an inorganic plate containing cement as a main component. As shown in FIGS. 1A to 1C, a plurality of convex portions 3 and a plurality of concave portions 4 are formed on the surface of the base material 1. That is, the building board 100 is configured to have a concavo-convex shape including a convex portion 3 and a concave portion 4 on the surface of the base material 1. The convex portion 3 and the concave portion 4 transfer the corresponding shapes corresponding to the convex portion 3 and the concave portion 4 to the flat surface of the inorganic plate which is the base material 1 before curing by using, for example, a roll mold or a press mold. Can be formed.

図１Ｂは図１ＡのＡ部分を示す正面図である。正面図とは建築板１００を前方向から見た場合の図面である。図１Ｃは建築板１００を上下方向に沿って切断した場合の一部の断面図である。 FIG. 1B is a front view showing a portion A of FIG. 1A. The front view is a drawing when the building board 100 is viewed from the front direction. FIG. 1C is a partial cross-sectional view of the building board 100 cut along the vertical direction.

建築板１００は、基材１の表面上の基準面２から法線方向Ｘに突出する凸部３を有している。ここで、基準面２は、前後方向と直交する平面状の仮想面であり、本実施形態では、左右方向で隣り合う凸部３と凹部４との境界部分に規定されている。また法線方向Ｘは基準面２から前方に垂直に突出する方向である。したがって、凸部３の基部（後端部分）は基準面２上にあり、基準面２から前方に突出するように凸部３が形成されている。 The building board 100 has a convex portion 3 protruding in the normal direction X from the reference surface 2 on the surface of the base material 1. Here, the reference surface 2 is a planar virtual surface orthogonal to the front-rear direction, and is defined as a boundary portion between the convex portion 3 and the concave portion 4 adjacent to each other in the left-right direction in the present embodiment. Further, the normal direction X is a direction vertically protruding forward from the reference plane 2. Therefore, the base portion (rear end portion) of the convex portion 3 is on the reference surface 2, and the convex portion 3 is formed so as to project forward from the reference surface 2.

凸部３は、上下方向に延びる形状に形成されている。凸部３は、左右方向の寸法よりも上下方向の寸法の方が長く形成されている。また凸部３は、上端面３１と下端面３２とを有して形成されている。上端面３１は凸部３の上側の端面であり、凸部３の上方に隣接する凹部４と境界部分である。下端面３２は凸部３の下側の端面であり、凸部３の下方に隣接する凹部４と境界部分である。 The convex portion 3 is formed in a shape extending in the vertical direction. The convex portion 3 is formed so that the vertical dimension is longer than the horizontal dimension. Further, the convex portion 3 is formed to have an upper end surface 31 and a lower end surface 32. The upper end surface 31 is the upper end surface of the convex portion 3, and is a boundary portion with the concave portion 4 adjacent above the convex portion 3. The lower end surface 32 is the lower end surface of the convex portion 3, and is a boundary portion with the concave portion 4 adjacent below the convex portion 3.

図１Ｃに示すように、上端面３１は、基準面２から法線方向Ｘに向かって斜め下方に傾斜して形成されている。上端面３１は基準面２から斜め下方前方に突出するように形成されている。また図１Ｃに示すように、下端面３２は、基準面２から法線方向Ｘに向かって斜め上方に傾斜して形成されている。下端面３２は基準面２から斜め上方前方に突出するように形成されている。さらに、凸部３は、上端面３１と下端面３２との間に側面３３を有している。側面３３は、上端が上端面３１と連続しており、下端が下端面３２と連続しており、側端が基準面２から前方に突出するように、形成されている。側面３３は全面にわたってなめらかな面に形成されており、角がなく、稜線がない。すなわち、側面３３は、凸部３の横断面（左右方向の断面）において、凸部３の突出方向（すなわち、法線方向Ｘ）に凸となる弧状に形成されている。凸部３は、例えば、軸方向で略半分にした円柱で、かつ上端面と下端面が前方へ傾斜したような形状を有している。 As shown in FIG. 1C, the upper end surface 31 is formed so as to be inclined obliquely downward from the reference surface 2 in the normal direction X. The upper end surface 31 is formed so as to project diagonally downward and forward from the reference surface 2. Further, as shown in FIG. 1C, the lower end surface 32 is formed so as to be inclined diagonally upward from the reference surface 2 in the normal direction X. The lower end surface 32 is formed so as to project diagonally upward and forward from the reference surface 2. Further, the convex portion 3 has a side surface 33 between the upper end surface 31 and the lower end surface 32. The side surface 33 is formed so that the upper end is continuous with the upper end surface 31, the lower end is continuous with the lower end surface 32, and the side end projects forward from the reference surface 2. The side surface 33 is formed on a smooth surface over the entire surface, has no corners, and has no ridgeline. That is, the side surface 33 is formed in an arc shape that is convex in the projecting direction (that is, the normal direction X) of the convex portion 3 in the cross section (cross section in the left-right direction) of the convex portion 3. The convex portion 3 is, for example, a cylinder that is substantially halved in the axial direction, and has a shape in which the upper end surface and the lower end surface are inclined forward.

本実施形態では、複数の凸部３が上下方向に並んで形成されている。上下で隣り合う凸部は所定の間隔を介して配置されており、上下方向で隣り合う凸部３の間には、基準面２から法線方向Ｘと反対方向に凹む凹部４が形成されている。言い換えると、上下方向で隣り合う凹部４の間に凸部３が形成されている。凹部４の上側には凸部３が隣接して形成されており、凹部４の下側には上記とは別の凸部３が形成されている。また凸部３は基準面２から前方へ突出しているのに対して、凹部４は基準面２から後方に凹んでいる。凹部４は、凹面（凹部４の最も深い部分から基準面２に至る面）４３を有している。凹面４３は凹部４の横断面において、凹部４の凹む方向（すなわち、法線方向Ｘと反対方向）に凸となる弧状に形成されている。凹面４３は、後述の凹部上端面４１と凹部下端面４２との間に形成されている。 In the present embodiment, a plurality of convex portions 3 are formed side by side in the vertical direction. The convex portions adjacent to each other in the vertical direction are arranged at predetermined intervals, and the concave portions 4 recessed from the reference surface 2 in the direction opposite to the normal direction X are formed between the convex portions 3 adjacent to each other in the vertical direction. There is. In other words, the convex portion 3 is formed between the concave portions 4 adjacent to each other in the vertical direction. A convex portion 3 is formed adjacent to the upper side of the concave portion 4, and a convex portion 3 different from the above is formed on the lower side of the concave portion 4. Further, the convex portion 3 protrudes forward from the reference surface 2, while the concave portion 4 is recessed rearward from the reference surface 2. The recess 4 has a concave surface (a surface extending from the deepest portion of the recess 4 to the reference surface 2) 43. The concave surface 43 is formed in an arc shape that is convex in the concave direction (that is, the direction opposite to the normal direction X) of the concave portion 4 in the cross section of the concave portion 4. The concave surface 43 is formed between the concave upper end surface 41 and the concave lower end surface 42, which will be described later.

凹部４は、上側に隣接する凸部３の下端面３２と連続して傾斜する凹部上端面４１を有している。言い換えると、凸部３の下端面３２は、下側に隣接する凹部４の凹部上端面４１と繋がっており、かつ下端面３２と凹部上端面４１とは同じ傾斜角度で傾斜している。よって、凹部上端面４１は基準面２から法線方向Ｘと反対方向（後方）に向かって斜め下方に突出するように形成されている。また凹部上端面４１は凹面４３の上端と連続して形成されている。 The recess 4 has a recess upper end surface 41 that is continuously inclined with the lower end surface 32 of the convex portion 3 adjacent to the upper side. In other words, the lower end surface 32 of the convex portion 3 is connected to the concave upper end surface 41 of the concave portion 4 adjacent to the lower side, and the lower end surface 32 and the concave upper end surface 41 are inclined at the same inclination angle. Therefore, the concave end upper end surface 41 is formed so as to project diagonally downward from the reference surface 2 in the direction opposite to the normal direction X (rearward). Further, the concave upper end surface 41 is formed continuously with the upper end of the concave surface 43.

また凹部４は、下側に隣接する凸部３の上端面３１と連続して傾斜する凹部下端面４２を有している。言い換えると、凸部３の上端面３１は、上側に隣接する凹部４の凹部下端面４２と繋がっており、かつ上端面３１と凹部下端面４２とは同じ傾斜角度で傾斜している。よって、凹部下端面４２は基準面２から法線方向Ｘと反対方向（後方）に向かって斜め上方に突出するように形成されている。また凹部下端面４２は凹面４３の下端と連続して形成されている。 Further, the concave portion 4 has a concave lower end surface 42 that is continuously inclined with the upper end surface 31 of the convex portion 3 adjacent to the lower side. In other words, the upper end surface 31 of the convex portion 3 is connected to the concave lower end surface 42 of the concave portion 4 adjacent to the upper side, and the upper end surface 31 and the concave lower end surface 42 are inclined at the same inclination angle. Therefore, the lower end surface 42 of the recess is formed so as to project diagonally upward from the reference surface 2 in the direction opposite to the normal direction X (rearward). The lower end surface 42 of the recess is formed continuously with the lower end of the concave surface 43.

上記のように形成される建築板１００は、凸部３と凹部４とを含む凹凸形状部７を有している。凹凸形状部７は、凸部３と凹部４とが上下方向に交互に並んで構成されている。また凹凸形状部７は左右方向に複数並んでいる。そして、左右方向で隣接する凹凸形状部７は、上端面３１及びそれと連続する凹部下端面４２（後述のハイライト面５）と、下端面３２及びそれと連続する凹部上端面４１（後述のローライト面６）と、が隣接するように並んでいる。 The building board 100 formed as described above has a concave-convex shape portion 7 including a convex portion 3 and a concave portion 4. The concave-convex shape portion 7 is configured such that the convex portions 3 and the concave portions 4 are alternately arranged in the vertical direction. Further, a plurality of uneven shape portions 7 are arranged in the left-right direction. The concave-convex shape portion 7 adjacent to each other in the left-right direction includes an upper end surface 31 and a concave lower end surface 42 (highlight surface 5 described later) continuous with the upper end surface 31, and a lower end surface 32 and a concave upper end surface 41 (low light described later) continuous with the lower end surface 32. Surface 6) and are lined up so as to be adjacent to each other.

そして、本実施形態では、凸部３の上端面３１と凹部４の凹部下端面４２とによりハイライト面５が形成されている。また凸部３の下端面３２と凹部上端面４１とでローライト面６が形成されている。ハイライト面５はローライト面６よりも明るく見える。逆に、ローライト面６はハイライト面５よりも暗く見える。本実施形態に係る建築板１００が外壁材として使用された場合、太陽光等の光が斜め上方から照射されやすくなる。したがって、法線方向Ｘに対して上向きのハイライト面５にはローライト面６よりも照射される光量が多くなる。一方、ローライト面６は、凸部３の側面３３で影になって、斜め上方からの光の照射量がハイライト面５よりも少なくなる。よって、ハイライト面５からの反射光がローライト面６の反射光よりも少なくなり、ローライト面６はハイライト面５よりも暗く見える。言い換えると、ハイライト面５は、ローライト面６よりも反射光が多くなり、ローライト面６よりも明るく見える。なお、図１Ｂでは、ハイライト面５をローライト面６よりもドットの少ない模様で示している。 Then, in the present embodiment, the highlight surface 5 is formed by the upper end surface 31 of the convex portion 3 and the concave end surface 42 of the concave portion 4. Further, a low light surface 6 is formed by the lower end surface 32 of the convex portion 3 and the concave upper end surface 41. The highlight surface 5 looks brighter than the low light surface 6. On the contrary, the low light surface 6 looks darker than the highlight surface 5. When the building board 100 according to the present embodiment is used as an outer wall material, light such as sunlight is likely to be irradiated from diagonally above. Therefore, the amount of light emitted to the highlight surface 5 facing upward with respect to the normal direction X is larger than that to the low light surface 6. On the other hand, the low light surface 6 is shaded by the side surface 33 of the convex portion 3, and the amount of light emitted from diagonally above is smaller than that of the highlight surface 5. Therefore, the reflected light from the highlight surface 5 is less than the reflected light from the low light surface 6, and the low light surface 6 looks darker than the highlight surface 5. In other words, the highlight surface 5 has more reflected light than the low light surface 6 and looks brighter than the low light surface 6. In FIG. 1B, the highlight surface 5 is shown with a pattern having fewer dots than the low light surface 6.

本実施形態では、凹凸形状部７を構成する凸部３と凹部４とは、互いに同じ上下寸法を有している。すなわち、凸部３の上下方向の寸法Ｌ３と、凹部４の上下方向の寸法Ｌ４とは、同じに形成されている。また、左右方向で隣接する凹凸形状部７は、凸部３と凹部４とが隣接するように並んでいる。すなわち、凸部３と凹部４とは左右方向に交互に並んで形成されている。したがって、ハイライト面５とローライト面６とが左右方向に交互に並んで配置されている。図１Ａでは、ハイライト面５が白っぽい点で示されており、ローライト面６が黒っぽい点で示されている。 In the present embodiment, the convex portion 3 and the concave portion 4 constituting the concave-convex shape portion 7 have the same vertical dimensions. That is, the vertical dimension L3 of the convex portion 3 and the vertical dimension L4 of the concave portion 4 are formed to be the same. Further, the concave-convex shape portions 7 adjacent to each other in the left-right direction are arranged so that the convex portions 3 and the concave portions 4 are adjacent to each other. That is, the convex portions 3 and the concave portions 4 are formed so as to be alternately arranged in the left-right direction. Therefore, the highlight surface 5 and the low light surface 6 are arranged alternately in the left-right direction. In FIG. 1A, the highlight surface 5 is indicated by whitish dots, and the low light surface 6 is indicated by blackish dots.

本実施形態では、ハイライト面５及びローライト面６は、各々、平坦面で形成されている。すなわち、例えば、法線方向Ｘに対する下端面３２の傾斜角度Ｄ３と、法線方向Ｘに対する凹部上端面４１の傾斜角度Ｄ４との合計の角度（Ｄ３＋Ｄ４）が１８０°になるように形成されている。ここでいう「１８０°」は厳密な値ではなく、ほぼ１８０°を含む。したがって、下端面３２と凹部上端面４１との間には段差がほとんどなく、面一である。また、法線方向Ｘに対する上端面３１の傾斜角度と、法線方向Ｘに対する凹部下端面４２の傾斜角度との合計の角度も１８０°になるように形成されている。なお、上端面３１、下端面３２、凹部上端面４１及び凹部下端面４２の左右方向の傾きは、全て同じてあってもよいし、各々、異なっていてもよい。ここで、上端面３１、下端面３２、凹部上端面４１及び凹部下端面４２の左右方向の傾きとは、法線方向Ｘを軸として、上端面３１、下端面３２、凹部上端面４１及び凹部下端面４２を回転させた場合の傾きである。 In the present embodiment, the highlight surface 5 and the low light surface 6 are each formed of a flat surface. That is, for example, the total angle (D3 + D4) of the inclination angle D3 of the lower end surface 32 with respect to the normal direction X and the inclination angle D4 of the concave end surface 41 with respect to the normal direction X is formed to be 180 °. .. “180 °” here is not an exact value and includes almost 180 °. Therefore, there is almost no step between the lower end surface 32 and the concave upper end surface 41, and they are flush with each other. Further, the total angle of the inclination angle of the upper end surface 31 with respect to the normal direction X and the inclination angle of the concave end surface 42 with respect to the normal direction X is also formed to be 180 °. The inclinations of the upper end surface 31, the lower end surface 32, the concave upper end surface 41, and the concave lower end surface 42 in the left-right direction may all be the same, or may be different from each other. Here, the inclination of the upper end surface 31, the lower end surface 32, the concave upper end surface 41, and the concave lower end surface 42 in the left-right direction is the upper end surface 31, the lower end surface 32, the concave upper end surface 41, and the concave portion with the normal direction X as the axis. This is the inclination when the lower end surface 42 is rotated.

本実施の形態では、下端面３２の法線方向Ｘに対する上下方向の傾斜角度Ｄ３は、０°より大きく９０°よりも小さければよいが、より好ましくは、１０°以上８０°以下の範囲であり、更に好ましくは、２０°以上７０°以下である。上端面３１の法線方向Ｘに対する上下方向の傾斜角度も下端面３２と同様の範囲とすることができる。上端面３１と下端面３２との法線方向Ｘに対する傾斜角度は同じであってもよいし、異なっていてもよい。 In the present embodiment, the vertical inclination angle D3 of the lower end surface 32 with respect to the normal direction X may be larger than 0 ° and smaller than 90 °, but more preferably in the range of 10 ° or more and 80 ° or less. More preferably, it is 20 ° or more and 70 ° or less. The vertical inclination angle of the upper end surface 31 with respect to the normal direction X can also be in the same range as the lower end surface 32. The inclination angles of the upper end surface 31 and the lower end surface 32 with respect to the normal direction X may be the same or different.

また凹部上端面４１の法線方向Ｘに対する上下方向の傾斜角度Ｄ４は、９０°より大きく１８０°よりも小さければよいが、より好ましくは、１００°以上１７０°以下の範囲である。更に好ましくは、１１０°以上１６０°以下である。凹部下端面４２の法線方向Ｘに対する上下方向の傾斜角度も凹部上端面４１と同様の範囲とすることができる。凹部上端面４１と凹部下端面４２との法線方向Ｘに対する傾斜角度は同じであってもよいし、異なっていてもよい。 The vertical inclination angle D4 of the concave end surface 41 with respect to the normal direction X may be larger than 90 ° and smaller than 180 °, but more preferably in the range of 100 ° or more and 170 ° or less. More preferably, it is 110 ° or more and 160 ° or less. The vertical inclination angle of the concave end surface 42 with respect to the normal direction X can also be in the same range as the concave upper end surface 41. The inclination angles of the concave upper end surface 41 and the concave lower end surface 42 with respect to the normal direction X may be the same or different.

そして、本実施形態に係る建築板１００では、凸部３及び凹部４が形成された表面における特定の部分が汚れにくい。すなわち、建築板の表面が平坦に形成されていると、雨水等の水が建築板の上から下に向かってほぼ一直線に流れ落ちるため、汚れが筋状に生じやすい。一方、建築板１００では、表面に凸部３及び凹部４が形成されているため、雨水等の水が建築板の上端から下端に向かって一直線に流れ落ちにくく、左右方向に分散されながら流れ落ちるため、筋状の汚れが生じにくい。また凹部４からは、ハイライト面５を通じて水が排出されやすく、凸部３からは、ローライト面６を通じて水が流れ落ちやすくなり、建築板１００の表面に水が溜まりにくく、特定の部分に汚れが生じにくい。しかも、凸部３の側面３３及び凹部４の凹面４３が、各々、横断面で円弧状に形成されているため、水がスムーズに流れやすくなって、特定の部分に偏って流れにくくなり、特定の部分が汚れにくい。 Then, in the building board 100 according to the present embodiment, a specific portion on the surface on which the convex portion 3 and the concave portion 4 are formed is less likely to be soiled. That is, when the surface of the building board is formed flat, water such as rainwater flows down in a substantially straight line from the top to the bottom of the building board, so that dirt is likely to occur in a streak pattern. On the other hand, since the convex portion 3 and the concave portion 4 are formed on the surface of the building board 100, it is difficult for water such as rainwater to flow down in a straight line from the upper end to the lower end of the building board, and the water flows down while being dispersed in the left-right direction. Streaky stains are less likely to occur. Further, water is easily discharged from the concave portion 4 through the highlight surface 5, water is likely to flow down from the convex portion 3 through the low light surface 6, water is less likely to collect on the surface of the building board 100, and a specific portion is contaminated. Is unlikely to occur. Moreover, since the side surface 33 of the convex portion 3 and the concave surface 43 of the concave portion 4 are each formed in an arc shape in the cross section, it becomes easy for water to flow smoothly, and it becomes difficult for water to flow unevenly to a specific portion. The part is hard to get dirty.

（変形例）
実施形態は、本開示の様々な実施形態の一つに過ぎない。実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更が可能である。 (Modification example)
An embodiment is just one of the various embodiments of the present disclosure. The embodiment can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved.

実施形態では、建築板１００が外装材（外壁材）の場合について説明したが、これに限られず、建築板１００の意匠性を重要視して、内壁材などの内装材や天井板などとして使用することができる。 In the embodiment, the case where the building board 100 is an exterior material (outer wall material) has been described, but the present invention is not limited to this, and the building board 100 is used as an interior material such as an inner wall material or a ceiling board with an emphasis on the design. can do.

実施形態では、凸部３の上側と下側の両方に凹部４が形成されており、かつ凸部３の左側と右側の両方に凹部４が形成されている場合について説明したが、これに限られず、凸部３と凹部４との配置は、ランダムであってもよい。例えば、図３Ａでは、二つの凸部３が左右方向に並んで形成されている。また各凸部３の上側と下側の両方に凹部４が形成されている。 In the embodiment, the case where the concave portion 4 is formed on both the upper side and the lower side of the convex portion 3 and the concave portion 4 is formed on both the left side and the right side of the convex portion 3 has been described, but the present invention is limited to this. However, the arrangement of the convex portion 3 and the concave portion 4 may be random. For example, in FIG. 3A, two convex portions 3 are formed side by side in the left-right direction. Further, concave portions 4 are formed on both the upper side and the lower side of each convex portion 3.

実施形態では、凸部３の上下方向の寸法Ｌ３と、凹部４の上下方向の寸法Ｌ４と、が同じに形成されている場合について説明したが、これに限られず、凸部３の上下方向の寸法Ｌ３と、凹部４の上下方向の寸法Ｌ４と、は異なっていてもよい。例えば、図３Ｂでは、凹部４は、上下方向の寸法が凸部３よりも長い凹部４ａを含んでいる。この場合、凹部４ａの上下方向の寸法は、凸部の上下方向の寸法の約２倍である。なお、凸部３上下方向の寸法が凹部４よりも長くてもよい。 In the embodiment, the case where the vertical dimension L3 of the convex portion 3 and the vertical dimension L4 of the concave portion 4 are formed to be the same has been described, but the present invention is not limited to this, and the case where the convex portion 3 is formed in the vertical direction is not limited thereto. The dimension L3 and the vertical dimension L4 of the recess 4 may be different. For example, in FIG. 3B, the recess 4 includes a recess 4a whose vertical dimension is longer than that of the convex portion 3. In this case, the vertical dimension of the concave portion 4a is about twice the vertical dimension of the convex portion. The vertical dimension of the convex portion 3 may be longer than that of the concave portion 4.

実施形態では、上下方向の寸法が同じ凸部３と凹部４とが左右方向に隣接して並んでいたが、これに限られず、上下方向の寸法が同じ凸部３と凹部４とが上下方向にずれて配置されていてもよい。例えば、図３Ｃでは、左右方向で隣接する凸部３と凹部４とが上下方向に半分の長さ分ずれて配置されている。また左右方向で隣接する凸部３と凹部４との上下方向の寸法は同じである。 In the embodiment, the convex portion 3 and the concave portion 4 having the same vertical dimension are arranged adjacent to each other in the horizontal direction, but the present invention is not limited to this, and the convex portion 3 and the concave portion 4 having the same vertical dimension are arranged in the vertical direction. It may be arranged so as to be offset from each other. For example, in FIG. 3C, the convex portion 3 and the concave portion 4 adjacent to each other in the left-right direction are arranged so as to be offset by half the length in the vertical direction. Further, the convex portion 3 and the concave portion 4 adjacent to each other in the left-right direction have the same vertical dimensions.

凸部３と凹部４の配置は、建築板１００の表面おける水の流れ方、建築板１００の表面のデザインなどを考慮して設定することができる。また凸部３と凹部４の上下方向の寸法も、建築板１００の表面おける水の流れ方、建築板１００の表面のデザインなどを考慮して設定することができる。 The arrangement of the convex portion 3 and the concave portion 4 can be set in consideration of the flow of water on the surface of the building board 100, the design of the surface of the building board 100, and the like. Further, the vertical dimensions of the convex portion 3 and the concave portion 4 can also be set in consideration of the flow of water on the surface of the building board 100, the design of the surface of the building board 100, and the like.

（まとめ）
以上説明したように、第１の態様に係る建築板１００は、基材１の表面上の基準面２から法線方向Ｘに突出する凸部３を有している。凸部３は、上下方向に延びる形状に形成されている。また凸部３は、上端面３１、下端面３２及び上端面３１と下端面３２との間の側面３３を有して形成されている。上端面３１は、基準面２から法線方向Ｘに向かって斜め下方に傾斜して形成されている。下端面３２は、基準面２から法線方向Ｘに向かって斜め上方に傾斜して形成されている。側面３３は、凸部３の横断面において、凸部３の突出方向に凸となる弧状に形成されている。 (summary)
As described above, the building board 100 according to the first aspect has a convex portion 3 protruding in the normal direction X from the reference surface 2 on the surface of the base material 1. The convex portion 3 is formed in a shape extending in the vertical direction. Further, the convex portion 3 is formed to have an upper end surface 31, a lower end surface 32, and a side surface 33 between the upper end surface 31 and the lower end surface 32. The upper end surface 31 is formed so as to be inclined diagonally downward from the reference surface 2 in the normal direction X. The lower end surface 32 is formed so as to be inclined diagonally upward from the reference surface 2 in the normal direction X. The side surface 33 is formed in an arc shape that is convex in the projecting direction of the convex portion 3 in the cross section of the convex portion 3.

第１の態様によれば、雨水等の水が建築板１００の上から下に向かって一直線に流れ落ちにくく、凸部３と凹部４により左右方向に分散されながら流れ落ちるため、しかも、凸部３の弧状の側面３３を水がスムーズに流れやすくなって、特定の部分が汚れにくい、という利点がある。 According to the first aspect, water such as rainwater does not easily flow down in a straight line from the top to the bottom of the building board 100, and flows down while being dispersed in the left-right direction by the convex portion 3 and the concave portion 4, and moreover, the convex portion 3 There is an advantage that water easily flows smoothly on the arc-shaped side surface 33 and a specific part is not easily contaminated.

第２の態様は、第１の態様の建築板１００において、複数の凸部３が上下方向に並んで形成されている。上下方向で隣り合う凸部３の間に、基準面２から法線方向Ｘと反対方向に凹む凹部４が形成されている。凹部４は、上側に隣接する凸部３の下端面３２と連続して傾斜する凹部上端面４１を有している。また凹部４は、下側に隣接する凸部３の上端面３１と連続して傾斜する凹部下端面４２を有している。また凹部４は、凹部上端面４１と凹部下端面４２との間の凹面４３を有している。凹面４３は、凹部４の横断面において、法線方向Ｘと反対方向に凸となる弧状に形成されている。 In the second aspect, in the building board 100 of the first aspect, a plurality of convex portions 3 are formed side by side in the vertical direction. A concave portion 4 recessed from the reference surface 2 in the direction opposite to the normal direction X is formed between the convex portions 3 adjacent to each other in the vertical direction. The recess 4 has a recess upper end surface 41 that is continuously inclined with the lower end surface 32 of the convex portion 3 adjacent to the upper side. Further, the concave portion 4 has a concave lower end surface 42 that is continuously inclined with the upper end surface 31 of the convex portion 3 adjacent to the lower side. Further, the recess 4 has a concave surface 43 between the concave upper end surface 41 and the concave lower end surface 42. The concave surface 43 is formed in an arc shape that is convex in the direction opposite to the normal direction X in the cross section of the concave portion 4.

第２の態様によれば、上端面３１、下端面３２、凹面４３、凹部上端面４１及び凹部下端面４２により、凸部３から凹部４へ水が流れやすくなり、また凹部４から凸部３へも水が流れやすくなり、水が溜まる部分が少なくなって、特定の部分に汚れが生じにくい、という利点がある。 According to the second aspect, the upper end surface 31, the lower end surface 32, the concave surface 43, the concave upper end surface 41 and the concave lower end surface 42 facilitate the flow of water from the convex portion 3 to the concave portion 4, and the concave portion 4 to the convex portion 3 There is an advantage that water easily flows to the tongue, the part where water collects is reduced, and dirt is less likely to occur in a specific part.

第３の態様は、第２の形態の建築板１００において、凸部３と凹部４とが上下方向に交互に並んで構成された凹凸形状部７が、左右方向に複数並んでいる。隣接する凹凸形状部７は、上端面３１及びそれと連続する凹部下端面４２と下端面３２及びそれと連続する凹部上端面４１とが隣接するように並ぶ。 In the third aspect, in the building board 100 of the second embodiment, a plurality of concave-convex shaped portions 7 formed by alternately arranging the convex portions 3 and the concave portions 4 in the vertical direction are arranged in the horizontal direction. The adjacent concave-convex shape portions 7 are arranged so that the upper end surface 31, the lower end surface 42 of the concave portion continuous with the upper end surface 31, the lower end surface 32, and the upper end surface 41 of the concave portion continuous with the lower end surface 32 are adjacent to each other.

第３の態様によれば、上端面３１及びそれと連続する凹部下端面４２で現出される形態と、下端面３２及びそれと連続する凹部上端面４１で現出される形態とが、左右方向で隣接するように並ぶため、陰影の異なる形態が左右方向で隣接するデザインを容易に形成することができる、という利点がある。 According to the third aspect, the form that appears on the upper end surface 31 and the concave end surface 42 that is continuous with the upper end surface 31 and the form that appears on the lower end surface 32 and the concave end surface 41 that is continuous with the lower end surface 32 are in the left-right direction. Since they are arranged so as to be adjacent to each other, there is an advantage that different forms of shading can easily form adjacent designs in the left-right direction.

第４の態様は、第３の形態の建築板１００において、凹凸形状部７を構成する凸部３と凹部４とは、互いに同じ上下寸法を有している。隣接する凹凸形状部７は、凸部３と凹部４とが隣接するように並ぶ。 In the fourth aspect, in the building board 100 of the third embodiment, the convex portion 3 and the concave portion 4 constituting the concave-convex shape portion 7 have the same vertical dimensions. The concavo-convex shape portions 7 adjacent to each other are arranged so that the convex portion 3 and the concave portion 4 are adjacent to each other.

第４の態様によれば、凹凸形状部７の上端部と下端部とに陰影の異なる形態を形成することができ、陰影の異なる形態が左右方向で並ぶデザインを容易に形成することができる、という利点がある。 According to the fourth aspect, different forms of shadows can be formed on the upper end portion and the lower end portion of the concave-convex shape portion 7, and a design in which different forms of shadows are arranged in the left-right direction can be easily formed. There is an advantage.

１基材
２基準面
３凸部
３１上端面
３２下端面
３３側面
４凹部
４１凹部上端面
４２凹部下端面
４３凹面
７凹凸形状部
１００建築板
Ｘ法線方向 1 Base material 2 Reference surface 3 Convex part 31 Upper end surface 32 Lower end surface 33 Side surface 4 Recessed 41 Recessed upper end surface 42 Recessed lower end surface 43 Concave surface 7 Concavo-convex shape part 100 Building board X normal direction

Claims

A building board having a convex portion protruding in the normal direction from a reference plane on the surface of the base material.
The convex portion is formed in a shape extending in the vertical direction, and has an upper end surface, a lower end surface, and a side surface between the upper end surface and the lower end surface.
The upper end surface is formed so as to be inclined diagonally downward from the reference surface toward the normal direction.
The lower end surface is formed so as to be inclined diagonally upward from the reference surface toward the normal direction.
The side surface is formed in an arc shape that is convex in the projecting direction of the convex portion in the cross section of the convex portion.
Building board.

In claim 1,
A plurality of the convex portions are formed side by side in the vertical direction, and a concave portion recessed from the reference surface in the direction opposite to the normal direction is formed between the convex portions adjacent to each other in the vertical direction.
The concave portion includes a concave upper end surface that is continuously inclined with the lower end surface of the convex portion adjacent to the upper side, a concave lower end surface that is continuously inclined with the upper end surface of the convex portion adjacent to the lower side, and the like. It has a concave surface between the upper end surface of the concave portion and the lower end surface of the concave portion, and has a concave surface.
The concave surface is formed in an arc shape that is convex in the direction opposite to the normal direction in the cross section of the concave portion.
Building board.

In claim 2,
A plurality of concave-convex shaped portions formed by alternately arranging the convex portions and the concave portions in the vertical direction are arranged in the horizontal direction.
The adjacent concave-convex shape portions are arranged so that the upper end surface and the lower end surface of the concave portion continuous with the upper end surface and the lower end surface and the upper end surface of the concave portion continuous with the lower end surface are adjacent to each other.
Building board.

In claim 3,
The convex portion and the concave portion constituting the concave-convex shape portion have the same vertical dimensions as each other.
The adjacent concave-convex shape portions are arranged so that the convex portion and the concave portion are adjacent to each other.
Building board.