JPH08338117A - Wall surface facing material - Google Patents

Abstract

PURPOSE: To introduce the reflected light of sunlight to space below at higher efficiency than a wall painted white, and ensure a lighting effect of quality higher than a flat mirror surface. CONSTITUTION: A flat stainless steel sheet 22 is spot welded to the interior side of a wall surface facing material 17 made of an array of cylinders split so as to have corrugated appearance. Also, the exterior side of the material 17 is finished to mirror surface. As a result, direct sunlight incident from a position slantwise above is introduced slantwise in a downward direction without generating scattered light, regarding the vertical direction of the material 17. Regarding the horizontal direction, the cross section of the mirror surface of the material 17 has curvature convex toward forward space. Thus. reflected light scatters over a wide range. According to this construction, dazzle is reduced, even when the reflected light is looked at squarely, and the benefit of lighting extends even to a direction shaded against the sun. Also, a lighting effect with a faint shadow can be provided in space under the material 17 over a wide range for long hours in the daytime.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall surface exterior material which is attached to a structure of a wall surface which receives direct sunlight or its reflected light to form a wall surface.

[0002]

2. Description of the Related Art By painting a wall surface that receives direct sunlight and its reflections white, a road surface in a narrow street and an indoor space with a small window become bright. The outer wall painted white with titanium oxide pigment or lime has high reflectance of visible light to infrared light, and forms scattered light from direct sunlight and spreads it to every corner of the lower space. In addition, the amount of heat absorbed by the outer wall is reduced to suppress the temperature rise in the indoor space even under strong direct sunlight, so that an indoor space that is cool and easy to survive even in hot weather can be obtained.

[0003]

When direct sunlight entering obliquely from above is guided to the lower space by the white-painted wall surface, scattered light emitted in the sky or in the horizontal direction is wasted. The proportion of scattered light emitted from a surface exposed to direct sunlight toward the lower space is less than half as viewed from the solid angle. The white wall, which is shining white even when viewed from above, throws away not a small amount of scattered light that is generated into the space above. Therefore, the road surface and the floor surface that receive sunlight indirectly through the white painted wall surface have lower illuminance than the surface that receives direct sunlight, and the growth of plants such as lawns and the expulsion of moisture and the sterilization and mold prevention. Can not expect the effect of. Also, if it is a street sandwiched between buildings of 1 or 2 floors, the reflected light reaches the bottom with one turn, so you can expect a sufficient lighting effect, but if the number of floors increases and the height of the building increases, The bottom cannot be reached unless the reflection is repeated twice or three times, and more than half of the light escapes to the sky side as scattered light at each reflection, so that the road surface cannot be illuminated with sufficient brightness.

Here, if the wall surface that receives direct sunlight is made a mirror surface, it is possible to directly guide the direct sunlight incident from the obliquely upward sky to the lower space. For example, an atrium covered with transparent glass is placed between two high-rise buildings, and the flat, large-area reflective surface formed on the outer wall of the high-rise building is used to multiplex the reflected light of sunlight into the atrium. It has been known that various plants are grown in an atrium.
However, the direct sunlight reflected by a flat mirror surface is too dazzling to be viewed directly, which is annoying to users of buildings receiving the reflected light and street passers-by. In addition, since the range where the reflected light reaches is narrow and it moves every moment, the illumination range is limited and many places where the light does not reach are formed.
The quality of lighting is poor, such as the formation of thick shadows, high contrast, and easy eyestrain.

The present invention provides a wall exterior material that can guide sunlight to the lower space with higher efficiency than a white painted wall surface and can provide a high quality lighting effect as compared with a flat mirror surface. The purpose is to do.

[0006]

The wall exterior material of the present invention is
A building material that is attached to the structure of a wall that receives direct sunlight or its reflected light to form the surface of the wall. It has a mirror surface member that forms a mirror surface that reflects the direct sunlight incident from diagonally above and emits it obliquely downward.While maintaining the vertical light guiding performance by reflection, the horizontal cross section of the mirror surface is in front of the wall surface. It has a shape in which a plurality of curved lines that are convex toward the space are arranged along the wall surface. Then, a backing structure for holding the mirror surface member and fixing it to the structure of the wall surface is provided to facilitate the construction on the wall surface. Specifically, the horizontal section has a shape in which a plurality of identical fragments of the quadratic curve are arranged in the horizontal direction, and the mirror surface has a wavy appearance in which the sections of the quadratic curve are continuous in the vertical direction. It is possible to Such a mirror surface member is formed, for example, by molding a pair of glass plates into a corrugated surface that is convex toward the front space, and forming a metal thin film on one surface of one of the molded glass plates and viewing it from the opposite side. It is embodied by stacking the other glass plate on a reflective layer containing a metal thin film and adhering it integrally as a reflective surface.

In the structure provided with a backing structure, for example, a thin plate mirror member formed into a corrugated shape and having a mirror surface on the surface in contact with the external space is connected to the bottom surface of the corrugated surface seen from the external space side on the back surface side. And a thin plate supporting member integrally fixed to the mirror surface member, and an opening for fixing to a wall surface is formed in the supporting member. Further, for example, the corrugated metal plate is integrated and embodied on the surface of a concrete panel that is assembled into a building structure and constitutes an outer wall.

[0008]

According to the wall exterior material of the first aspect, the reflected light of the incident light is diffused in the horizontal direction while ensuring the light guide in one direction in the vertical direction. Similar to a flat mirror surface in the vertical direction, it guides the light to the lower space without forming scattered light, but in the horizontal direction, a mirror surface convex toward the front space diffuses the outgoing direction of the reflected light to make it flat. The reflected light also reaches the direction of the angle that the reflected light does not reach on the mirror surface. In the wall surface exterior material of the second aspect, the backing structure is arranged between the mirror surface member and the wall surface to prevent direct contact and heat conduction between the two. In addition, the mirror surface member is prevented from being deformed or warped, so that it can be easily attached to the wall surface.

In the wall surface exterior material of claim 3, an arc, an ellipse,
A quadratic curve such as a parabola forms a convex mirror surface toward the front space. Since the horizontal cross section is uniformly continuous in the vertical direction, it has a corrugated plate-like appearance in which the reflecting surfaces on the columns are arranged in the horizontal direction. In the wall surface exterior material of the fourth aspect, the reflection layer of the metal thin film is sandwiched between the pair of glass plates to be shielded from the outside air. The corrugated structure with the reflection layer sandwiched is disclosed in Japanese Patent Application No. 6-
As shown in the specification and drawings of No. 27227, it may be attached to a formwork and poured into concrete to be integrated with a wall, or may be fixed to a completed wall surface with an adhesive or mortar. The outer wall panel may be formed by forming a support layer such as concrete on the back surface.

In the wall surface exterior material of the present invention, between the corrugated plate-like mirror surface member formed of a thin plate of metal or resin and the flat support member, there is a space that penetrates in the vertical direction and is divided in the horizontal direction. It is formed. Further, the wall surface exterior material is fixed to the structure of the wall surface, that is, the skeleton or the base surface by passing a bolt through the opening formed in the support member. In the wall surface exterior material of claim 6,
A mirror member is placed on the outer surface of an outer wall panel of lightweight cellular concrete or heavy concrete. The outer wall with the mirror surface of the building facing outward is completed only by assembling the outer wall panel to the steel frame or fixing the outer wall panels to each other to form a wall structure.

[0011]

[Embodiment] FIG. 1 is an explanatory view of indoor wall surface treatment of the first embodiment,
FIG. 2 is an explanatory view of the structure of the wall exterior material. In FIG.
(A) is a front view and (b) is a horizontal sectional view. In FIG. 1, direct sunlight is guided to the indoor space through a skylight 12 provided on a roof 11. Since the space between adjacent buildings 10 is narrow, direct sunlight cannot be obtained even if a window is formed on the outer wall 14.
The outer wall 14 has a windowless structure that prioritizes heat insulation,
The inner surface 14A is painted white.

The inner wall 13 separates the indoor space from the outer wall 1.
An open space 19 that reaches the floor surface (dirt surface) of the first floor is formed between the space 4 and the space 4. The stairwell space 19 is used as a staircase or an entrance hall, and is located on the opposite side of the inner wall 13 between the staircase 16
The floor 15 is arranged to form a living room on the first and second floors. On the inner wall 13, the white painted surface 14A of the outer wall 14
Openings, windows, and shoji doors (not shown) are formed to capture the scattered light generated in 1. Wall surface exterior materials 17, 18 are installed on the surface of the inner wall 13 that can receive direct sunlight through the skylight 12. As shown in FIG. 2A, the wall surface exterior material 1
7 and 18 are attached side by side in the horizontal direction so that the projection image of the skylight 12 from the sunrise to the sunset on the surface of the inner wall 13 is occupied. The vertical length of the wall exterior materials 17 and 18 is a distance corresponding to the difference in height of the sun between winter and summer.

As shown in FIG. 2B, the wall surface exterior material 1
7 and 18 use, as reflecting members, thin stainless steel plates 21 and 28 that are press-molded to have an appearance in which a large number of side surfaces of columns are arranged. The corrugated bottoms 23, 29 of the sheets 21, 28 are spot-welded to the flat stainless sheets 22, 25 to give the overall structure the property and strength of maintaining a flat shape. The surfaces of the thin plates 21 and 28 are polished and mirror-finished before press molding. Immediately after forming the mirror surface,
A thin resin film with holes formed at spot welding points is attached to the mirror surface so that the mirror surface will not be damaged in subsequent processing steps and mounting operations.

In the corrugated mountain line at both ends of the wall exterior material 17,
The thin plates 21 having a mirror surface are formed with the openings 24 arranged in a line in the vertical direction, and the mounting holes 27 are formed at the positions overlapping the openings 24 in the thin plate 22 of the lining. On the other hand, at both ends of the wall surface exterior material 18, there is no thin plate 28 having a mirror surface, and mounting holes 27 are formed at positions overlapping the openings 24 of the backing thin plate 25. The wall exterior materials 17 and 18 are overlapped at both ends and the mounting holes 27 of the backing thin plates 22 and 25 are aligned to form the opening 2
The screw 26 is inserted into the mounting hole 27 through the inner wall 1
The screw 26 is cut into the lower ground of the No. 3 to be fixed.

Direct sunlight that has entered the indoor space through the skylight 12 in FIG. 1 is reflected by the mirror surfaces of the wall exterior materials 17 and 18, and illuminates the white painted surface 14A of the outer wall 14. At this time, since the mirror surfaces of the wall surface exterior materials 17 and 18 are corrugated and the horizontal cross section of the mirror surface is a curved curve convex toward the blow-through space 19 side, the reflected light is diffused and reaches a wide range of the surface 14A. To do. Therefore, a clear projected image of the skylight as in the case where a flat mirror surface is arranged is not formed on the surface 14A.
Scattered light is generated from a wide area of 4A, and the space 1
The whole 9 is in a bright illumination state with a uniform shadow.

As shown in FIG. 2B, the thin plate 2
A semi-cylindrical space is formed between the first and the second plates 28, 25 and the thin plates 22, 25, and the space prevents direct heat conduction to the inner wall 13. Further, since the upper and lower ends of this space are open, even if the thin plates 21 and 28 are heated by direct sunlight, the heat rapidly carried away to the ceiling side by the air rising by thermal convection in this space. The temperature rise of the inner wall 13 is suppressed. In the first embodiment, the wall surface exterior material 1
Since 7 and 18 are used indoors, requirements for weather resistance and water resistance can be relaxed. Therefore, the same wall exterior material may be formed of a thin resin plate such as transparent vinyl chloride, and the mirror surface may be formed by plating with aluminum or chromium or by sputter deposition.

FIG. 3 is an explanatory view of the structure of the wall exterior material of the second embodiment. In FIG. 3, (a) shows the structure of the wall exterior material,
(B) is a cross-section joining structure. Here, unlike the first embodiment, which is mounted on a wall surface, the wall surface exterior material itself has a function as an outer wall. As shown in FIG. 3A, in the wall surface exterior material of the second embodiment, a foam concrete backing layer 32 is formed inside a box-shaped mirror surface member 31 formed of a thin stainless plate. Mirror surface member 3
No. 1 has a reflection plate 33 having a corrugated appearance by press-processing after polishing the surface to form a mirror surface. Mirror surface member 31
In the box-shaped structure of, the mirror surface is opposite to the backing layer 32,
A pair of thin plates, which form the upper and lower bottoms of the corrugation, are welded to the edges of the reflection plate 33 which is raised at right angles on both sides.

The backing layer 32 is formed by pouring foamed concrete into a dedicated mold having a mirror surface member 31 attached to the bottom to solidify it. On the four side surface portions of the formed backing layer 32 protruding from the mirror surface member 31 and on the surface opposite to the reflection plate 31, a groove structure, a protrusion structure or an opening (not shown) is formed, and the corresponding mounting on the building structure side is performed. It enables positioning and fixing to the structure. The mold of the backing layer 32 is provided with unevenness on the side surface for transferring the groove structure or the protrusion structure. Inside the lining layer 32, in order to secure the strength as the outer wall panel, a reinforcing steel structure for reinforcement and a wire mesh (not shown) are embedded.

As shown in FIG. 3B, the bell surface member 31
An auxiliary member 32, which is formed of a thin stainless steel plate and has an open leg shape, is spot-welded to the back surface of the plate to ensure connection between the mirror-like member 31 and the backing layer 32 after curing. The wall exterior material of the second embodiment is fixed to the steel frame of a building by connecting and fixing outer wall panels to each other in the same manner as in a normal pre-hap structure, or in the same manner as a concrete panel for outer wall in a heavy steel frame structure or the like. Form the outer wall of the building. Since the backing layer 32 is formed of foamed concrete, it is lightweight, has a light load on the steel frame structure, etc., is easy to carry and construct, and has excellent heat insulating properties.

FIG. 4 is an explanatory view of a modification of the appearance of the mirror surface. In FIG. 4, (a), (b), and (c) are examples of horizontal cross sections of the mirror surface, and (d), (e), (f), and (g) are examples of plane patterns of the mirror surface. In the first and second embodiments, the horizontal cross section of the mirror surface has the same array of arcs, and the planar pattern of the mirror surface has an appearance in which cylindrical side surfaces are regularly arranged. The appearance can be variously modified as shown in FIG.

The cross section in the horizontal direction shown in FIG.
The ridge portion where the two curves 41 and 42 intersect is formed in a linear shape in the vertical direction to reduce the amount of reflection in the front direction when direct light is incident on the wall surface exterior material in a plane perpendicular to the wall surface exterior material. are doing. In the horizontal cross section shown in FIG. 4B, a straight line 44 is arranged at the hem of the quadratic curve 43, and when the direct light is incident at a shallow angle within the horizontal cross section of the wall exterior material, A large amount of reflected light can be guided in the lower space, that is, in the direction of an observer who has his or her back to the sun. In the horizontal cross section shown in FIG. 4C, the curve has two steps to increase the curvature of each portion, thereby enhancing the ability to diffuse the reflected light in the horizontal direction.

In the appearance shown in FIG. 4D, the vertical inclination angle (opening angle) of the upper conical surface is made larger than the vertical inclination angle (opening angle) of the lower conical surface. It improves the light guiding performance downward. In the appearance shown in (e) of FIG. 4, due to the irregular arrangement of the cylindrical side surface, a change in shading is given in the diffusion direction of the reflected light. In the appearance shown in FIG. 4 (f), the mountain streaks of the corrugated reflection surface are undulated so that the reflection surface itself of the thin plate tends to be flat. Therefore, even without the backing thin plate of the first embodiment and the backing layer of the second embodiment, warpage is less likely to occur as compared with the appearances shown in (d), (e), and (f). The appearance shown in (g) of FIG.
The spindle-shaped protrusions are arranged to give some vertical diffusion to the reflected light.

The wall surface exterior material of the third embodiment will be described with reference to FIGS. FIG. 5 is an explanatory view of various structures of the wall exterior material, and FIG. 6 is an explanatory view of a construction example of the wall exterior material. Here, several techniques for forming a corrugated reflective surface in glass are described. In FIG. 5A, a pair of thick glass plates each having a corrugated corrugated surface that mesh with each other are joined to form a wall surface exterior material. The reflecting member 51 on the front surface side and the backing member 52 on the back surface side are formed by pressing a glass material which is softened by heating to a mold having irregularities in which the respective waveforms are inverted.

A highly transparent glass material is used for the reflecting member 51, and the corrugated surface removed from the mold is smoothed by blowing a flame. The reason why the surface of the reflecting member 51 is made flat is to ensure the convenience of cleaning the surface and wiping off dirt when it is mounted on the outer wall surface. After the outer shape and the corrugated surface are molded and cooled, chromium or silver is sputter-deposited on the corrugated surface to form a mirror surface viewed from the surface side. The reflective layer 53 is formed by applying a resin paint on the metal thin film. The coating increases water resistance and oxidation resistance, ensuring the life of the metal thin film (mirror surface). The backing member 52 is made of an inexpensive glass material having a thermal expansion coefficient substantially equal to that of the reflecting member 51. The backing member 52 and the reflecting member 51 are integrally joined using a resin adhesive.

Here, foamed glass having a spongy structure may be used for the backing member 52. The coating of the resin coating of the reflection layer 53 is replaced with a glass thin film formed by sputtering, glass powder having a low melting point is sandwiched between the backing member and the reflection member 51 and the whole is heated to be integrated, and the whole is made of only an inorganic material. It is also possible to form. The back surface of the backing member may not be flat, but may have irregularities for facilitating the bonding to the wall surface. Wires such as stainless steel may be projected from the back surface of the backing member, or holes or recesses for hooking the hook structure provided on the wall surface side may be formed.

FIG. 5B shows a glass reflecting member 54.
And a ceramic backing member 55 in combination are shown. The corrugated surface of the reflecting member 54 and the reflecting layer 57
Is formed by the same processing procedure as the wall surface exterior material of FIG. The backing member 55 is made of a ceramic material that is well compatible with cement mortar and has a coefficient of thermal expansion that is not so different from that of the glass material of the reflecting member 54. A ceramic material is molded and sintered to form a simple shape having unevenness 56 on the back surface but no corrugation on the surface. In order to maintain the airtightness of the reflection layer 57 of the reflection member 54, the four edges of the resin film 60 are heat-welded to the portion surrounding the reflection layer 57 of the reflection member 54. A space 5 is formed between the reflecting member 54 and the backing member 55.
Therefore, the air holes 59 are provided so that the pressure in the space 58 does not increase even if the temperature rises. The reflecting member 54 and the backing member 55 are integrally joined by using a flexible silicone rubber sealing material.

FIG. 5C shows a method of forming a thin glass plate into a corrugated shape. As shown in the specification and drawings of Japanese Patent Application No. 6-27227 filed on January 14, 1994, the wall exterior material has a pair of thin glass plates formed in a corrugated plate shape with a reflective layer. It may have a structure in which it is sandwiched from both sides and sealed. Since the surface is corrugated, the problems that the surface reflection becomes dazzling as in the case where the surface is flat and the processing and finishing of the corrugated surface forming the mirror surface become complicated are solved.
Further, since the wall surface exterior material is composed of the pair of curved thin glass plates, the glass material is saved.

As shown in FIG. 5 (c), two transparent thin glass plates 61 and 62 are stacked and heated to a temperature equal to or higher than the softening point, and placed on a mold 63 that is heated to the same degree. The position corresponding to the valley portion of 63 is gently pushed by the blade 64 extending in the direction perpendicular to the paper surface, and the curved surface of the mountain streak of the mold 63 is copied onto the glass plates 61 and 62. A temperature and a processing speed at which the glass plates 61 and 62 are not fused are selected. The glass plates 61 and 62 are cooled together with the mold 63 to a temperature below the softening point, removed from the mold 63, and further slowly cooled. According to this method, the two surfaces that are required to have smoothness, that is, the front surface and the back surface of the glass plate 61, are not brought into contact with the mold 63 during molding, so that it is not necessary to finish the formed corrugated surface. After cooling is completed, the glass plates 61, 62
Then, a metal thin film of silver or aluminum is sputtered on the corrugated surface of the back surface of the glass plate 61 to form a mirror surface viewed from the front surface, and a protective film of a glass material is sputtered on the metal thin film. The glass plates 61 and 62 are again overlapped with the projections and depressions and are integrally bonded with a silicone rubber sealing material.

The glass plates 61 and 62 may be individually formed into a corrugated shape by two types of molds, and instead of being pushed by the blade 64, a vacuum is drawn from the mold 63 side to suck the glass plate 62 on the surface of the mold 63. The glass plate 6 stacked on the mold 63 may be used.
The so-called blow molding may be performed by applying air pressure to the entire surface of the 1, 62. In order to facilitate the separation of the stacked glass plates 61, 62 when a high temperature is applied to facilitate the molding, a thin film of a refractory metal, such as chromium, is formed on the surface of the glass plate 62 before molding facing the glass plate 61. The sputter-deposited film may be formed in advance.

As shown in FIG. 6, the various wall exterior materials produced in this manner are applied to the facing surfaces of two buildings built across a narrow street. In addition, you may construct the wall surface exterior material of a 1st Example or a 2nd Example. The direction of the facing surface, the change in the altitude of the sun over the four seasons, and the trajectory of the sun throughout the day are taken into consideration. The reflecting surfaces 73, 74 cover the widest possible area of the surface receiving the direct sunlight and the opposite surface.
By arranging, the whole street will be illuminated uniformly.

A reflective surface 73 made of a wall exterior material is formed on the outer wall of the building 71, and a reflective surface 74 made of a wall exterior material is formed on the outer wall of the building 72. Direct sunlight that is obliquely incident from the sky reaches the bottom street surface after being reflected multiple times by the reflecting surfaces 73 and 74. Since the reflected light loses its directivity and is more evenly dispersed by the folding back a plurality of times, the reflecting surfaces 73 and 74 on the lower floors are observed to be in a substantially uniform weak shining state and further dazzle. Is reduced. The shadow of the road surface becomes even thinner, and the illuminance is averaged further. As a result, in every corner of the street, the contrast is low and the shadows are light,
A high-quality lighting condition is obtained by averaging the illuminance changes of each part throughout the day. The reflection surfaces 73 and 74 occupy the full width of the buildings 71 and 72, respectively, and are formed in the height range of the second floor or higher. The reason why the reflecting surfaces 73 and 74 are not provided on the wall surface of the first floor is
This is because the corrugated surface that generates reflected light is an obstacle to passers-by and drivers of passing vehicles. The reason why the reflective surface 73 is not provided on the wall surface on the top floor of the building 71 is that the reflected light merely irradiates the roof of the building 72 when viewed from the height of the opposing reflective surface 74 and is not guided to the street. is there.

In FIG. 7, the reflection states on the corrugated reflection surface and the flat reflection surface are compared. In FIG. 7, (a) is a corrugated reflecting surface, and (b) is a flat reflecting surface. On the reflecting surface 77 in which the horizontal cross section of FIG. 7A is formed in a waveform that is convex outward, the luminous flux of sunlight incident in parallel is diffused in a wide angle range. Therefore, the reflected light reaches all directions in a wide angle range (directions of respective arrows) to benefit from illumination. On the contrary, when viewed from all directions in a wide angle range (directions of respective arrows), it is observed that all the mountain stripes of the reflecting surface 77 are linearly shining only partially.
In other words, it is observed that parts of all the mountain streaks forming the reflecting surface 77 are shining in places located in all directions in a wide angle range. The reflected light supplied from one peak of the reflecting surface 77 is diffused and weak, and the glare is small, but the reflected light from many mountain lines of the entire reflecting surface 77 is integrated to obtain a bright irradiation state with a thin shadow. To be The incident angle of sunlight on the reflecting surface 77 changes every day from morning to dusk, but due to this diffusing action of the reflecting surface 77, the angle (and time zone) of turning the sun toward the sun is also increased. The reflected light continues to be supplied for a long time.

On the other hand, in the flat reflecting surface of FIG. 7B,
Only in the direction of the reflection angle equal to the incident angle, the glint reflected light is observed. The reflected light does not reach at all in other directions, especially in the direction of the angle to turn the back to the sun. The portion where the reflected light reaches is extremely bright, but the angle direction where the reflected light does not reach becomes a shadow. In bright areas, the shadows are dark and the contrast is high, which causes eyestrain. The direct glare of reflected light in the shade is annoying.

The wall covering material of the embodiment described above can be applied to applications other than those shown in FIGS. For example, it can be used for various applications shown in the specification of Japanese Patent Application No. 6-27227 and the drawings. Further, it is also possible to use it in a construction form other than that shown in FIGS. For example, if it is installed on a wall that receives sunlight folded back with a flat mirror surface, or if the incident direction of sunlight is limited, match the direction of the peaks of the waveform with the incident direction (that is, the mountain line is It may be installed at an angle to guide sunlight to a deeper position in the building. Further, the member that is disposed on the surface side of the wall surface exterior member and forms the mirror surface can be replaced with a material having a certain optical property such as a metal plate, a metal thin film, glass, or a resin plate, and the mirror surface is lined. For the member, the material and the molding method can be freely selected regardless of the optical property.

[0035]

According to the wall exterior material of the present invention, since the reflected light is guided to the lower space without letting the scattered light escape to the sky, the energy of sunlight is effectively used as compared with the wall painted in white. It The corners of the space below the constructed wall, such as the space between buildings and the surface of the street, are brightly illuminated, and drying, sterilization, and deodorization by sunlight even in places where direct sunlight does not reach or where sunshine duration is limited You can enjoy the effects of mildew prevention. Sunbathing and plant cultivation are also possible. In addition, since the mirror surface formed in a waveform diffuses the reflected light in the horizontal direction (a wide range diagonally below), the irradiation range and the irradiation angle are wider than the flat mirror surface. Therefore, the glare of the reflected light directly when the mirror surface is directly viewed is reduced, and the reflected light is guided to the shadowed portion on the flat mirror surface. Further, since the reflected light arrives at the same place from a plurality of curved surfaces (wavy peaks), the contrast of the shadow is low, and a good lighting effect without eye strain can be obtained.

The structure provided with the backing member ensures the strength of the wall surface exterior material even if the mirror surface member is weak, so that the storability, transportability, and workability are increased. By carrying the standardized wall exterior materials to the site for installation, it will be easier to attach them to the building structure and the number of construction days will be reduced.

When the horizontal cross section of the wall surface exterior material is made continuous in the vertical direction to form a corrugated shape as a whole, the production including the molding die becomes easy. On the other hand, when the peaks and troughs of the curved surface are formed slightly obliquely and intersected from two directions, the basic property of diffusing in the horizontal direction while maintaining the light guide in the vertical direction is maintained, It is possible to give a slight change to the diffusion direction or the shading of the diffusion. When a wall exterior material is constructed by sandwiching a reflective layer between a pair of corrugated glass plate materials, the required corrugation can be formed by heat deformation of a thin glass plate. Compared with the case of forming a glass, less glass material is required and processing cost is reduced. If two sheets are overlapped and formed into a corrugated shape, the surface forming the mirror surface is not brought into contact with the mold, so that smoothness is maintained, and finishing such as flame polishing for ensuring smoothness is unnecessary.

When the wall covering material is composed of a pair of thin plates (a mirror surface member and a supporting member) and a space which is vertically penetrated and horizontally divided is formed between them, the wall covering material becomes lighter. , The structure of the wall to be mounted is less burdensome and the structure for mounting is simple. Further, the heat insulation effect of the space suppresses the temperature rise of the wall surface. When the wall exterior material has a structure in which the corrugated metal plate is integrated with the surface of the outer wall panel of concrete, the required light guiding performance can be secured without attaching the wall exterior material to the surface of the outer wall panel afterwards.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of indoor wall surface processing according to a first embodiment.

FIG. 2 is an explanatory diagram of a structure of a wall exterior material.

FIG. 3 is an explanatory diagram of a structure of a wall surface exterior material of a second embodiment.

FIG. 4 is an explanatory diagram of a modified example of a mirror surface.

FIG. 5 is an explanatory diagram of a structure of a wall surface exterior material of a third embodiment.

FIG. 6 is an explanatory diagram of a construction example of a wall exterior material.

FIG. 7 is a comparison diagram of a corrugated reflection surface and a flat reflection surface.

[Explanation of symbols]

 10 Adjacent Buildings 11 Roof 12 Skylight 13 Inner Wall 14 Outer Wall 15 Floor 16 Beam 17, 18 Wall Exterior Material 19 Blowing Space 21, 22, 25, 28 Thin Plate 24 Opening 26 Screw 27 Mounting Hole 23, 29 Corrugated Bottom 31 Mirror Surface Member 32 Backing layer 33 Reflector 34 Opening member 41, 42, 43, 45, 46 Curve 44 Straight line 51, 54 Reflecting member 52, 55 Backing member 53, 57 Reflecting layer 61, 62 Glass plate 63 Type 64 Blade 71, 72 Building 73 , 74, 77, 78 Reflective surface

Claims (6)

[Claims] 1. In a wall surface exterior material that is attached to a structure of a wall surface that receives direct sunlight or reflected light thereof and forms the surface of the wall surface, it reflects the direct sunlight or its reflected light incident from obliquely above and obliquely downward. A mirror surface member that forms a mirror surface to be ejected onto the wall surface, wherein the horizontal cross section of the mirror surface is formed by arranging a plurality of curved curves convex toward the front space of the wall surface along the wall surface. Exterior material. 2. The wall surface exterior material according to claim 1, further comprising a backing structure for holding the mirror surface member and fixing it to the structure of the wall surface. 3. The wall exterior material according to claim 1, wherein the horizontal section has a plurality of identical quadratic curves arranged in the horizontal direction, and the mirror surface has the quadratic section in the vertical direction. A wall exterior material characterized by a continuous corrugated appearance. 4. The wall surface exterior material according to claim 1, wherein the mirror surface member is formed by molding a pair of glass plates into a corrugated surface that is convex toward the front space, and is formed on one surface of one molded glass plate. A wall exterior material having a structure in which a reflective layer including a metal thin film is formed to form a reflective surface viewed from the opposite side, and then the other glass plate is superposed on the reflective layer and integrally bonded. 5. The wall surface exterior material according to claim 2, wherein a thin plate mirror surface member formed into a corrugated shape and having a mirror surface formed on a surface contacting the external space is connected to the bottom surface of the corrugated surface viewed from the external space side on the back surface side. And a thin plate support member integrally fixed to the mirror surface member, and an opening for fixing to the wall surface is formed in the support member. 6. The wall exterior material according to claim 2, wherein a corrugated metal plate is integrally formed on a surface of a concrete panel which is assembled to a building structure and constitutes an outer wall.