JP7577481B2 - Building board - Google Patents

Description

The present invention relates to building boards such as siding boards used as exterior walls of buildings such as houses.

Some building boards, such as siding boards used as the exterior walls of buildings, have multiple block sections protruding from the surface. The block sections are rectangular with two horizontal edges running horizontally and two vertical edges running vertically, and are arranged vertically and horizontally with joints in between. The block sections of typical building boards are formed so that the vertical edges are the same length, and the horizontal edges are arranged on the same straight line. In this type of building board, various patterns and irregularities are provided on the surface of the block sections to avoid a monotonous impression (see, for example, Patent Document 1).

JP 2019-108743 A

Conventional building boards have in common that, when viewed head-on, they have rectangular block sections arranged vertically and horizontally. For this reason, even if the pattern or unevenness of the block sections is changed, there is a limit to how much differentiation can be achieved between the board and other building boards. In particular, with building boards in which the block sections are attached to thin metal sheets, such as metal siding boards, the dimensions of the unevenness are also significantly limited, making it even more difficult to differentiate the board.

In view of the above situation, the present invention aims to provide a building board that can promote sales by making its differentiation more prominent.

In order to achieve the above-mentioned object, the building board of the present invention is a building board in which a plurality of block portions are provided so as to protrude from the surface, and these block portions are arranged vertically and horizontally, and the plurality of block portions form a rectangular shape surrounded by two horizontal edges in the horizontal direction and two vertical edges in the vertical direction that extend parallel to each other when viewed from the surface side, and at least a portion of the plurality of block portions have the vertical edges extending at an angle relative to the horizontal edges, and the block portions have triangular end regions at both horizontal ends, with the vertical edges as one side and surrounded by straight portions , and have two decorative regions between the horizontal edges and a ridge-like portion connecting the vertices of the end regions, and the end regions are configured so that their shapes are different on the left and right, and the vertices are located at positions that are asymmetrical with respect to a virtual symmetry plane perpendicular to the horizontal edges, and are configured at an angle so that they gradually approach each other as they protrude toward the front side, and the ridge-like portions extend at an angle relative to the horizontal edges.

According to the present invention, by randomly extending the horizontal and vertical edges between the block sections, it is possible to clearly distinguish the board from ordinary building boards, in which the horizontal and vertical edges extend only in the vertical and horizontal directions, even when viewed from the front. This results in noticeable differentiation, which can contribute to sales promotion.

1 is a diagram showing a building board according to an embodiment of the present invention, viewed from the front side. FIG. 2 is a partial perspective view of the building board shown in FIG. 1 . 2A and 2B show a part of the building board shown in FIG. 1, in which FIG. 2A shows a case where light is irradiated from the right side in the figure, and FIG. 2B shows a case where light is irradiated from the left side in the figure. FIG. 2 is an enlarged longitudinal sectional view of the surface material shown in FIG. 1 . These show representative examples of block portions provided on the surface of the building board shown in Figure 1, which are included in the first group of block portions whose vertical edges are inclined in the same direction, where (a) is a schematic diagram of one having end regions on both sides that are triangular, (b) is a schematic diagram of one having end regions on both sides that are rectangular, (c) is a schematic diagram of one having end regions on both sides that are pentagonal, (d) is a schematic diagram of one end region that is triangular and the other end region that is pentagonal, and (e) is a schematic diagram of one end region that is rectangular and the other end region that is pentagonal. This shows representative examples of block portions provided on the surface of the building board shown in Figure 1, which are included in the second block portion group in which the vertical edges are inclined in opposite directions, where (a) is a schematic diagram of one where the end regions on both sides are triangular, (b) is a schematic diagram of one where the end regions on both sides are rectangular, (c) is a schematic diagram of one where the end regions on both sides are pentagonal, (d) is a schematic diagram of one end region that is triangular and the other end region that is pentagonal, and (e) is a schematic diagram of one end region that is rectangular and the other end region that is pentagonal. 5(a) shows a specific example of the block portion shown in FIG. 5(a), where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). 6(a) shows a specific example of the block portion shown in FIG. 6(a), where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). 5A and 5B show a specific example of the block portion shown in FIG. 5B, where (a) is a view from the front side and (b) is a view in which imaginary lines have been added to the portions corresponding to the horizontal edges, vertical edges, and ridge-like portions of (a). 6(b) shows a specific example of the block portion shown in FIG. 6(a), where FIG. 6(a) is a view from the front side, and FIG. 6(b) is a view in which imaginary lines have been added to the portions corresponding to the horizontal edges, vertical edges, and ridge-like portions of FIG. 6(a). 5A and 5B show a specific example of the block portion shown in FIG. 5C, where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the portions corresponding to the horizontal edges, vertical edges, and ridge-like portions of (a). 6(c) show a specific example of the block portion shown in FIG. 6(a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). 5A and 5B show a specific example of the block portion shown in FIG. 5(d), where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). 6(b) shows a specific example of the block portion shown in FIG. 6(d), where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). 5A and 5B show a specific example of the block portion shown in FIG. 5E, where (a) is a view from the front side and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). 6(e) shows a specific example of the block portion shown in FIG. 6(a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a). This shows a block portion where the horizontal edges do not coincide with the horizontal reference line, where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal and vertical edges of (a). This shows a block portion having curved ridge-like portions, where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the horizontal edges, vertical edges, and portions corresponding to the ridge-like portions of (a). This shows a block portion with an increased number of decorative areas, where (a) is a view from the front side, and (b) is a view in which imaginary lines have been added to the parts corresponding to the horizontal edges, vertical edges, and ridge-like parts of (a).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the building board according to the present invention will be described in detail with reference to the accompanying drawings.
1 to 3 show a building board according to an embodiment of the present invention. The building board exemplified here is a so-called metal siding board used as an exterior wall of a building such as a house. As shown in FIG. 4, the building board of this embodiment is constructed by filling a resin material 3 having heat insulating properties between a surface material 1 and a backing material 2 made of a thin metal plate, and is provided so as to cover the exterior surface of a building with the surface material 1 exposed to the outside. Engagement parts 4, 5 that can be fitted into each other are provided on both the upper and lower edges of the building board. The engagement parts 4, 5 are integrally formed with the surface material 1 by bending and shaping the edges of the surface material 1.

The surface material 1 has a surface portion 6 in the portion between the engaging portions 4 and 5. The surface portion 6 has a horizontally long rectangular shape with a horizontal side 6a arranged horizontally relative to the building and a vertical side 6b arranged vertically, and has a plurality of block portions 10 on its surface. The block portion 10 has a rectangular shape surrounded by two horizontal edges 11 extending parallel to the horizontal side 6a and two vertical edges 12 extending to connect the ends of the horizontal edges 11, and is configured to protrude from the surface of the surface portion 6. The horizontal edges 11 and vertical edges 12 of the block portion 10 are located on approximately the same plane on the surface of the surface portion 6. In the illustrated example, the vertical dimensions, i.e., the spacing between the horizontal edges 11, are approximately the same, while the multiple block portions 10 are arranged vertically and horizontally on the surface portion 6 so that the horizontal dimensions are various lengths. In most of the blocks 10, at least one of the vertical edges 12 is inclined at an arbitrary angle in an arbitrary direction with respect to the horizontal edge 11, and the external shape is an irregular rectangular shape. The protruding shapes of the blocks 10 are also various, and each surface has an irregular uneven pattern that imitates the surface of a stone. As a result, the surface portion 6 is provided with a plurality of types of blocks 10 with different external shapes and protruding shapes. Although not shown in the figure, the surface material 1 is formed by passing a flat plate between two forming rolls with unevenness formed on the outer circumferential surface, and forming each block 10 into an embossed shape. As a method for forming the unevenness on the surface of the forming roll, CNC (Computerized Numerical Control) cutting is applied to correspond to the part that is inclined with respect to the surface of the surface portion 6 and the irregular uneven pattern that imitates the surface of a stone.

The specific configuration of the block portion 10 provided on the surface portion 6 will be described in detail below, and the characteristic parts of the present invention will also be described. As shown in Figures 5 and 6, the surface portion 6 includes a mixture of block portions 10 included in the first block portion group, which are rhombic in shape with two vertical edges 12 inclined in the same direction with respect to a virtual inclination reference line L perpendicular to the horizontal edge 11, and block portions 10 included in the second block portion group, which are trapezoidal in shape with two vertical edges 12 inclined in opposite directions with respect to the inclination reference line L. The block portions 10 included in the first block portion group include those in which the two vertical edges 12 are inclined in the opposite direction (to the right when facing upward) to those shown in Figure 5. The block portions 10 included in the second block portion group include those in which the two vertical edges 12 are inclined in the opposite direction to those shown in Figure 6, forming an inverted V shape, with only one vertical edge 12 inclined and the other vertical edge 12 extending in a direction perpendicular to the horizontal edge 11.

The block parts 10 included in each block part group have end regions 13 at both lateral ends, and have multiple decorative part regions 14 between the end regions 13. The end regions 13 and the multiple decorative part regions 14 each have an approximately planar shape. That is, as described above, the surface of the block part 10 has an irregular pattern with bumps and recesses that imitate the surface of a stone. For this reason, the block part 10 cannot be said to be composed of a simple combination of flat surfaces, but for convenience, the areas that can be regarded as one flat surface when the bumps and recesses of the pattern are smoothed and simplified will be treated as the approximately planar end region 13 and the approximately planar decorative part region 14, respectively. Similarly, no clear ridges or vertices appear in the mutual adjacencies of the end region 13 and the decorative part region 14, or in the mutual adjacencies of the decorative part region 14 and the decorative part region 14, but a linear ridge-like portion 15 exists at the boundary between the approximate flat surfaces, and a point-like vertex portion 16 exists at the intersection of the ridge-like portion 15 and the ridge-like portion 15. Therefore, the area surrounded by multiple straight-line ridge portions 15 is treated as having a polygonal shape such as a triangle or a rectangle. In order to distinguish between ridge portions 15 that appear between decorative areas 14 and 14 and between end areas 13 and decorative areas 14, the former are sometimes referred to as ridge portions 15A. The intersection of horizontal edges 11 and vertical edges 12 may also be treated as vertex portions 16'.

As is clear from the figures, the end regions 13 of the block portion 10 are provided with an external shape that is triangular, rectangular, or pentagonal. One side of each end region 13 coincides with the vertical edge 12, and the end regions 13 are provided at an angle so that they gradually approach each other as they protrude. The end regions 13 of both horizontal ends of each block portion 10 may have an external shape in which the number of vertices 16 is the same, as shown in Figures 5(a) to 5(c), 6(a) to 6(c), and 7 to 12, or may have an external shape in which the number of vertices 16 is different, as shown in Figures 5(d), 5(e), 6(d), 6(e), and 13 to 16. However, it is preferable that the end regions 13 on both sides are configured so that at least one pair of apexes 16 located at both ends of the ridgeline portion 15A is asymmetric with respect to an imaginary plane of symmetry P perpendicular to the side edge 11, so that at least one of the ridgeline portions 15A appearing between the two decorative regions 14 is inclined with respect to the side edge 11. The inclination angle of the end regions 13 (the protruding angle from the surface portion 6) may be symmetric on both sides.

The decorative area 14 of the block part 10 is defined by the ridge line portion 15A and the side edge 11 that connect the vertices 16 between the end areas 13, and is configured to have a surface area larger than the sum of the surface areas of the two end areas 13. More specifically, as shown in Figures 5(a), 6(a), 7, and 8, when the end areas 13 on both sides are triangular, one ridge line portion 15A and two rectangular decorative areas 14 are provided in the block part 10. As shown in Figures 5(b), 6(b), 9, and 10, when the end areas 13 on both sides are rectangular, two ridge line portions 15A and three rectangular decorative areas 14 are provided in the block part 10. As shown in Figures 5(c), 6(c), 11 and 12, when both lateral end regions 13 are pentagonal, three ridgeline portions 15A and four quadrangular decorative regions 14 are provided in the block portion 10. As shown in Figures 5(d), 6(d), 13 and 14, when one end region 13 is triangular and the other is pentagonal, three ridgeline portions 15A and four decorative regions 14 are provided, but two of the decorative regions 14 are quadrangular and two are triangular. In the cases of Figures 5(d), 6(d) and 14, the intersection of the horizontal edge 11 and the vertical edge 12 in the triangular end region 13 is set as a vertex 16', and two ridgeline portions 15A are provided between the vertex 16' of the pentagonal end region 13. In the case of Fig. 13, in the triangular end region 13, the intersection of the horizontal edge 11 and the vertical edge 12 is set as the apex 16', and one ridge line portion 15A is provided between the apex 16 of the pentagonal end region 13, and further, two ridge line portions 15A are provided from the two apex portions 16 of the pentagonal end region 13 to one apex portion 16 of the triangular end region 13. As shown in Figs. 5(e), 6(e), 15 and 16, when one end region 13 is rectangular and the other is pentagonal, three ridge line portions 15A and four decorative regions 14 are provided, but there are three rectangular decorative regions 14 and one triangular decorative region 14. In this example, two ridge portions 15A are provided at two vertices 16 of the pentagonal end region 13 to one vertex 16 of the quadrilateral end region 13.

As described above, the end regions 13 on both sides have at least one pair of vertices 16 at positions that are asymmetrical with respect to the imaginary symmetry plane P. Therefore, at least one of the ridge-like portions 15A connecting the vertices 16 (including 16') on both sides extends so as to be inclined with respect to the horizontal edge 11, and at least one of the decorative regions 14 is inclined with respect to the surface of the surface portion 6. Moreover, since the inclination angles of the ridge-like portions 15A vary, the inclination states of the decorative regions 14 provided on each block portion 10 are also different from each other. Furthermore, since the end regions 13 are also inclined so as to be close to each other, when facing the surface material 1, the reflected light from the end regions 13 can also be recognized. As a result, when light is irradiated onto the surface portion 6, the reflected light from each block portion 10 becomes random and the positions of the shaded portions also differ, making it possible to recognize that many types of block portions 10 with different uneven shapes are provided on the surface portion 6.

As shown in Figures 1 to 3, the different types of block portions 10 described above are randomly arranged on the surface portion 6. The block portions 10 are basically arranged so that the horizontal edges 11 of the block portions 10 are aligned with imaginary horizontal reference lines H that are parallel to the horizontal sides 6a of the surface portion 6 and are equally spaced apart. However, as shown in Figure 17, some of the block portions 10 are shifted in parallel along the vertical direction and are arranged so that the horizontal edges 11 do not match the horizontal reference lines H.

It is preferable that adjacent block parts 10 in the vertical and horizontal directions have different numbers and shapes of decorative areas 14. By providing pairs of block parts 10 with different numbers and shapes of decorative areas 14, the differences between them become more noticeable. Therefore, although it is actually not possible to create large irregularities within the limited dimensions of a thin metal plate, the irregularities can be emphasized by greatly varying the shapes and inclination angles of adjacent decorative areas 14, and there is no risk of the impression being monotonous.

With a building board having the surface material 1 configured as described above, the extension direction of the vertical edges 12 arranged between the block parts 10 is random, making it possible to recognize the presence of multiple block parts 10 with different external shapes. In particular, the presence of diamond-shaped block parts 10 included in the first block part group and trapezoidal block parts 10 included in the second block part group makes it possible to recognize a greater number of types of block parts 10. Therefore, even if there is no stone-like pattern applied to the surface, it is possible to recognize a clear difference between this and a general building board in which the vertical edges 12 extend only vertically, which makes the differentiation more noticeable and contributes to sales promotion.

Furthermore, the block portion 10 is provided with a decorative area 14 that is inclined relative to the surface of the surface portion 6, and two end areas 13 that are inclined relative to the surface of the surface portion 6 are provided on both sides of the decorative area 14. The decorative area 14 and the two end areas 13 have different inclination directions, and the decorative area 14 has a different inclination direction for each block portion 10. Therefore, when light is irradiated onto the surface portion 6, the reflected light from each block portion 10 becomes random, and the positions of the shaded areas also differ, making it possible to recognize that many types of block portions 10 are provided on the surface portion 6. In particular, for adjacent portions of block portions 10 with significantly different shapes and inclination angles of the decorative area 14, the difference is prominent, so that the uneven state is emphasized, giving the impression that the unevenness is formed with dimensions larger than the actual size. In addition, even if the block portion 10 is the same, as shown in FIG. 3, if the position of the light source is different, the light reflecting portion and the shaded portion are interchanged, giving a different impression. As a result, even if the external shape of the block portions 10 is the same, they will be recognized as different block portions 10 because the direction of light reflection and the areas in shadow are different, making it possible to differentiate building boards with many different types of block portions 10 attached to the surface material 1.

In the above embodiment, the block parts 10 are arranged so that the horizontal edge 11 extends along the horizontal side 6a of the surface part 6 and the vertical edge 12 is inclined relative to the vertical side 6b, but the present invention is not limited to this. The block parts 10 may be arranged so that the vertical edge 12 extends along the vertical side 6b of the surface part 6 and the horizontal edge 11 is inclined relative to the horizontal side 6a, or the block parts 10 may be arranged so that the vertical edge 12 and the horizontal edge 11 are both inclined relative to the horizontal side 6a and the vertical side 6b. In addition, the two horizontal edges 11 do not need to be parallel to each other. Furthermore, in the case where the horizontal edge 11 extends along the horizontal side 6a of the surface part 6, the block parts 10 are arranged so that the horizontal edge 11 coincides with the virtual horizontal reference line H extending in the horizontal direction, and the block parts 10 are arranged so that the horizontal edge 11 does not coincide with the horizontal reference line H. Therefore, for example, even if the position of adjacent building boards in the horizontal direction is shifted during the renovation of a building, this position shift is difficult to recognize. However, the present invention is not necessarily limited to this, and for example, the lateral edges 11 of all the block portions 10 may be arranged to coincide with the lateral reference line H.

In addition, in the above-mentioned embodiment, the ridge line portion 15A that appears at the mutually adjacent portions of the multiple decorative areas 14 is linear, but it is also possible to configure the multiple decorative areas 14 so that the ridge line portion 15A' that forms a curved shape appears between them, as in the block part 10 shown in FIG. 18. In the illustrated example, the ridge line portion 15A' that forms a curved shape is branched off from the linear ridge line portion 15A, so that the number of decorative areas 14 provided in the block part 10 can be increased. That is, since three ridge line portions 15 are provided in each of the rectangular end areas 13, three decorative areas 14 can be provided by simply providing the ridge line portion 15A between the vertices 16. In contrast, as shown in FIG. 18, the ridge line portion 15A is branched off midway, and one of them is provided between the vertex portion 16' that is the intersection of the horizontal edge 11 and the vertical edge 12, so that four decorative areas 14 can be configured. Similarly, for example, as in the block portion 10 shown in FIG. 19, by adding a ridge portion 15A from the apex portion 16 of one end region 13 to the apex portion 16', which is the intersection of the horizontal edge 11 and the vertical edge 12 in the other end region 13, it is possible to increase the number of decorative regions 14.

As described above, the building board of the present invention is a building board having a plurality of block portions protruding from the surface, the block portions being arranged vertically and horizontally, the plurality of block portions forming a rectangular shape surrounded by two horizontal edges and two vertical edges, and at least a portion of the plurality of block portions are characterized in that the horizontal edges and vertical edges extend at an angle to each other.
According to this invention, by randomly extending the horizontal and vertical edges between the blocks, it is possible to clearly distinguish the board from ordinary building boards, in which the horizontal and vertical edges extend only in the vertical and horizontal directions, even when the board is viewed from the front. This makes the board distinctive and contributes to sales promotion.

Furthermore, the present invention is characterized in that, in the above-mentioned building board, the plurality of block portions extend such that the two lateral edges are parallel to each other.
According to this invention, when the panel is installed on the exterior wall of a building, the horizontal edges coincide with the horizontal plane, giving the building an impression of stability.

The present invention is also characterized in that, in the above-mentioned building board, the building board is provided with a block portion in which the two vertical edges are both inclined with respect to the horizontal edge.
The present invention is also characterized in that, in the above-mentioned building board, the multiple block portions include a first block portion group in which the two vertical edges form a diamond shape inclined in the same direction relative to a virtual inclination reference line perpendicular to the horizontal edge, and a second block portion group in which the two vertical edges form a trapezoid shape inclined in opposite directions relative to the inclination reference line.
According to these inventions, it is possible to increase the variety of block portions with different external shapes, making it easier to differentiate them.

The present invention is also characterized in that, in the above-mentioned building board, it comprises a block portion arranged so that the lateral edge coincides with a virtual lateral reference line extending laterally, and a block portion arranged so that the lateral edge does not coincide with the lateral reference line.
According to this invention, since the horizontal edges of multiple block portions arranged laterally are not on the same horizontal line, even if the position of adjacent building boards becomes misaligned during renovation of a building, for example, this misalignment is difficult to notice, making it possible to prevent a situation in which the appearance quality is impaired.

The present invention is also characterized in that, in the above-mentioned building board, it has end regions on both lateral ends and a plurality of decorative areas between the end regions, and is provided with a block portion in which ridge-like portions appearing at the mutual adjoining portions of the plurality of decorative areas extend so as to be inclined or curved relative to the lateral edges.
According to this invention, the decorative areas with different light reflection directions are adjacent to each other so as to be inclined or curved relative to the horizontal edges, so that the block portion can be recognized as having a complex three-dimensional shape, making differentiation easier.

Furthermore, the present invention is characterized in that, in the above-mentioned building board, each of the end regions is configured to have an outer shape surrounded by three or more straight line portions.
According to this invention, a large number of ridge-like portions appear on the surface of the block portion, and the block portion can be recognized as having a more complex three-dimensional shape.

The present invention is also characterized in that, in the above-mentioned building board, the multiple block portions extend so that the two lateral edges are parallel to each other, and the end region is provided in such a position that at least one pair of vertex portions are asymmetrical with respect to an imaginary symmetry plane perpendicular to the lateral edges.
According to this invention, since the ridge line portion connecting the vertices of the end region is inclined with respect to the lateral edge, the decorative region is also inclined, and the direction of light reflection becomes random, making it easier to differentiate.

Furthermore, the present invention is characterized in that in the above-mentioned building board, the end regions are configured to be inclined so as to gradually approach each other as they protrude.
According to this invention, when facing the surface directly, the shape of the edge region can also be recognized, making differentiation easier.

The present invention is also characterized in that, in the above-mentioned building board, it has a surface portion whose outer shape is rectangular having horizontal and vertical sides, and the multiple block portions are arranged so that the horizontal edges extend along the horizontal sides.
According to this invention, the horizontal edges of the block parts are arranged along the horizontal sides of the outer shape, so that even when they are installed side by side above and below against the exterior wall of a building, there is no need to align the upper and lower block parts, making it possible to facilitate installation work.

Furthermore, the present invention is characterized in that in the above-mentioned building board, the surface of the decorative area is provided with an irregular, uneven pattern.
According to this invention, even in decorative areas arranged in the same direction in the block portion, the reflective direction differs due to the uneven pattern, making it easier to differentiate them.

Furthermore, the present invention is characterized in that the building board described above comprises a pair of block portions which are different from each other in the number of ridge-like portions and which are arranged adjacent to each other.
According to this invention, block portions differing in the number and shape of decorative areas are arranged adjacent to each other in pairs, so that the difference between the two block portions is more clearly noticeable, making differentiation easier.

1 Surface material, 6 Surface portion, 6a Horizontal side, 6b Vertical side, 10 Block portion, 11 Horizontal edge, 12 Vertical edge, 13 End region, 14 Decorative portion region, 15 Ridge line portion, 15A Ridge line portion, 16 Vertex portion, H Horizontal reference line, L Slope reference line, P Symmetry plane

Claims (6)

A building board having a plurality of block portions protruding from a surface thereof and arranged vertically and horizontally,
When viewed from the front surface side, each of the plurality of block portions has a rectangular shape surrounded by two horizontal edges extending parallel to each other and two vertical edges extending vertically, and at least some of the plurality of block portions have vertical edges extending at an angle with respect to the horizontal edges,
The block portion has a triangular end region at each of the two lateral ends, the triangular end region having the vertical edge as one side and surrounded by straight line portions , and has two decorative regions between the lateral edges and a ridge line portion connecting the vertices of the end regions,
The end regions are configured so that they have different shapes on the left and right, and the vertices are located at positions that are asymmetrical with respect to an imaginary plane of symmetry perpendicular to the horizontal edge, and are configured to be inclined so that they gradually approach each other as they protrude toward the front, and the ridge-like portions extend at an angle relative to the horizontal edge. The building board according to claim 1, characterized in that the two vertical edges each have a block portion that is inclined relative to the horizontal edge. The building board according to claim 2, characterized in that the plurality of block parts are included in a first group of block parts that form a diamond shape with the two vertical edges inclined in the same direction relative to a virtual inclination reference line perpendicular to the horizontal edges, and in a second group of block parts that form a trapezoid shape with the two vertical edges inclined in opposite directions relative to the inclination reference line. The building board according to claim 2, characterized in that it comprises a block portion arranged so that the lateral edge coincides with a virtual lateral reference line extending laterally, and a block portion arranged so that the lateral edge does not coincide with the lateral reference line. The building board according to claim 1, characterized in that it has a surface portion whose outer shape is a rectangle having horizontal and vertical sides, and the multiple block portions are provided so that the horizontal edges extend along the horizontal sides. The building board according to claim 1, characterized in that the block portion has an irregular, uneven pattern.

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