JP5665075B2 - Reflective wall - Google Patents

Description

  The present invention relates to a reflecting wall that reflects sunlight.

As a reflecting wall that reflects sunlight, there is one that reflects sunlight by attaching a reflective tile having an inclined surface to an outer wall surface of a wall body (see, for example, Patent Document 1).
In such a reflection wall, since the temperature rise of the wall body by sunlight can be suppressed, the heat island phenomenon can be suppressed, the cooling efficiency in the building can be improved, and the energy efficiency can be improved.

Japanese Patent Laid-Open No. 2007-192016

  In the conventional reflection wall described above, since the inclination angle of the tile with respect to the outer wall surface is small, the amount of sunlight reflected in the direction other than the incident direction increases, and the amount of light reflected toward other buildings or the ground increases. There is a problem. In particular, when the sun is located at an altitude in the south and middle, the energy of sunlight increases, so the influence of the reflected light reflected toward other buildings, the ground, etc. on the surrounding environment increases.

  Therefore, an object of the present invention is to provide a reflection wall that can solve the above-described problems and reduce the influence of reflected light on the surrounding environment.

In order to solve the above problems, the present invention provides a reflecting wall, the first reflecting surface, a second reflecting surface formed continuously on one side of the first reflecting surface, and the first reflecting surface. A reflecting portion having a third reflecting surface formed continuously on the other side of the reflecting surface is formed on the outer wall surface of the wall body . The first reflecting surface is inclined so as to face the sun located at the south-middle altitude, and the normal line of the second reflecting surface is a vertical where the normal line of the first reflecting surface is arranged. Inclined in the vertical plane rotated in the southeast direction with respect to the plane, the normal of the third reflective surface is southwest of the vertical plane on which the normal of the first reflective surface is arranged. It is characterized by tilting in a vertical plane rotated in the direction .

In this configuration, when the energy of sunlight becomes large and the reflection effect is required, sunlight can be reflected in the sky direction and strong reflection in unintended directions can be prevented. The influence on the surrounding environment can be reduced.
In the above-described configuration, the reflective surface can be directly opposed to the sun located at the south-middle altitude by adjusting the inclination angle of the normal of the reflection surface to the horizontal level. At this time, the inclination angle of the normal line of the reflecting surface does not need to coincide with the south-middle altitude, and may be within a range of plus or minus 10 degrees with respect to the south-middle altitude.
Moreover, in this invention, since a structure is simple compared with the structure which reflects sunlight through several reflective surfaces, manufacturing cost can be made cheap.

In the above-described reflecting wall, when the inclination angle of the normal line of the first reflecting surface with respect to the horizontal plane is set in accordance with the south-central altitude of the summer solstice, the sunlight energy is the largest in the year, and the reflecting effect Since the sunlight can be reflected in the sky direction at the time when the most is needed, the influence of the reflected light on the surrounding environment can be effectively reduced. Even in this configuration, the inclination angle of the normal of the reflecting surface does not need to coincide with the south-middle altitude of the summer solstice, and may be within a range of plus or minus 10 degrees with respect to the south-middle altitude of the summer solstice. .

In the reflection wall described above , when the inclination angle of the normal line of the second reflection surface and the normal line of the third reflection surface is smaller than the inclination angle of the normal line of the reflection surface, Sunlight at times before and after the time can be reflected in the sky direction.

In the reflecting wall, a fourth reflecting surface is formed in the reflecting portion, and an inclination angle of a normal line of the fourth reflecting surface with respect to a horizontal plane is set in accordance with a south-central altitude of the winter solstice, and the fourth reflecting surface is set . The reflective surface may be finished with a lower reflectance than the first reflective surface. In this configuration, the fourth reflecting surface is directly facing the sun located at the southern and middle altitudes of the winter solstice, and the fourth reflecting surface has a higher heat absorption rate due to sunlight in the winter, so the heating efficiency in the building Can be increased.
It should be noted that the inclination angle of the normal line of the fourth reflecting surface does not need to coincide with the south-middle altitude of the winter solstice, and only needs to be within a range of plus or minus 10 degrees with respect to the south-middle altitude of the winter solstice. .

In the above-described reflecting wall, when the reflecting portion is formed by a recess formed on the outer wall surface of the wall body and all the reflecting surfaces are formed on the inner surface of the recess, the reflecting surface is formed on the wall body. While being able to form easily, the thickness of a wall body can be made small.

In the above-described reflecting wall, when the reflecting portion is formed by a protruding portion formed on the outer wall surface of the wall body and all the reflecting surfaces are formed on the outer surface of the protruding portion, the reflecting portion is reflected on the wall body. The surface can be easily formed.

  In the reflection wall described above, it is preferable that sunlight is reflected in the sky direction over a wide range of the outer wall surface by forming a plurality of the reflection portions on the outer wall surface of the wall body.

  In the reflecting wall of the present invention, sunlight can be reflected in the sky direction when a reflection effect is required, and strong reflection in an unintended direction can be prevented. Can be reduced. Further, since the structure is simple, the manufacturing cost can be reduced.

It is the perspective view which showed the reflecting wall of this embodiment. It is the figure which showed the reflection part of this embodiment, (a) is a front view, (b) is a sectional side view. (A) is explanatory drawing which showed the relationship between the reflective surface of this embodiment, and south and middle altitude, (b) is explanatory drawing which showed the direction of the reflective surface of this embodiment. It is the figure which showed the reflection part of other embodiment, and is a perspective view of the structure by which the reflection part is formed of the protrusion part. It is the figure which showed the reflection part of other embodiment, and is a sectional side view of the structure which formed the 4th reflective surface which match | combined the inclination angle of the normal line with the south middle altitude of the winter solstice.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
As shown in FIG. 1, the reflecting wall 1 according to the present embodiment includes a concrete wall body 10 used for a side wall of a structure such as a building.
The wall 10 is formed with an outer wall surface 10a which is a vertical surface exposed to the outside. A plurality of reflecting portions 20 are formed on the outer wall surface 10a. In the present embodiment, the outer wall surface 10a is arranged facing south.

  The reflection part 20 is the recessed part 21 formed in the outer wall surface 10a, and the back surface 21a is formed inside the wall body 10 rather than the outer wall surface 10a (refer FIG.2 (b)). In the present embodiment, in the upper and lower rows, the left-right direction of the reflector 20 so that the other rows of reflectors 20 are disposed above or below the two reflectors 20, 20 arranged in the left-right direction. They are arranged in a shifted position.

  As shown in FIG. 2A, the recess 21 is formed in a substantially semicircular shape when viewed from the front. An arcuate curved surface 21b is formed at the top of the recess 21 and three reflecting surfaces 22a, 22b, 22c are formed at the bottom 21c (bottom) of the recess 21.

  The shape of the concave portion 21 forming the reflective portion 20 is not limited, but, as shown in FIG. 2B, sunlight incident on the concave portion 21 from the outside reflects three reflective surfaces 22a, 22b, and 22c. The height and the opening shape of the recess 21 are set so as to be irradiated.

  As shown in FIG. 2A, the three reflecting surfaces 22a, 22b, and 22c are flat surfaces formed on the upper surface of the bottom portion 21c of the reflecting portion 20, and the first reflecting surface 22a and the first reflecting surface 22a A second reflecting surface 22b and a third reflecting surface 22c are formed on the left and right sides of the reflecting surface 22a. Each of the reflective surfaces 22a, 22b, and 22c is coated with a reflective paint or a white paint in order to increase the reflectance of sunlight.

The normal H1 of the first reflecting surface 22a shown in FIG. 3 (a) is inclined with respect to the horizontal plane in the vertical plane S1 (see FIG. 3 (b)) including the sun disposed in the south. The inclination angle coincides with the south-middle altitude A of the summer solstice at the construction site of the reflecting wall 1. Specifically, the first reflecting surface 22a is an inclined surface whose rear surface 21a side is higher than the outer wall surface 10a side so as to face the sun located at the southern middle altitude of the summer solstice.
Here, in the present embodiment, the outer wall surface 10a is arranged in the south direction, and at the mid-summer time of the summer solstice, the south-middle altitude is about 70 degrees (an angle in the Tokyo region). The first reflecting surface 22a is inclined at an angle of about 20 degrees with respect to the horizontal plane so that the normal line H1 coincides with the south-mid altitude A of the summer solstice.
Such a first reflecting surface 22a can reflect many components of sunlight incident from the sun located at the southern and middle altitudes of the summer solstice in the sky direction (see FIG. 2B).

  In the present embodiment, the inclination angle of the normal line H1 of the first reflection surface 22a with respect to the horizontal plane is made to coincide with the south-central altitude A of the summer solstice, but the inclination angle of the normal line H1 of the first reflection surface 22a. Is set within a range of plus or minus 10 degrees with respect to the south-middle altitude A of the summer solstice, so that the first reflecting surface 22a can be directly opposed to the sun located at the south-middle altitude A of the summer solstice.

The second reflecting surface 22b is arranged on the left side of the first reflecting surface 22a in FIG. The normal H2 of the second reflecting surface 22b shown in FIG. 3A is more southeast than the vertical surface S1 (see FIG. 3B) where the normal H1 of the first reflecting surface 22b is arranged. It is inclined in the vertical plane S2 (see FIG. 3B) rotated in the direction of. The inclination angle of the normal line H2 with respect to the horizontal plane is smaller than the inclination angle of the normal line H1 of the first reflecting surface 22a. That is, the second reflecting surface 22b is inclined with respect to the horizontal plane so as to face the sun at a time (for example, one hour before) before the summer time.
With such a second reflecting surface 22b, it is possible to reflect many components of sunlight incident from the sun at the time before the summer time in the south solstice in the sky direction.

The third reflecting surface 22c is disposed on the right side of the first reflecting surface 22a in FIG. The normal H3 of the third reflecting surface 22c shown in FIG. 3A is southwest of the vertical surface S1 (see FIG. 3B) on which the normal H1 of the first reflecting surface 22b is arranged. It is inclined in the vertical plane S3 (see FIG. 3B) rotated in the direction of. The inclination angle of the normal line H3 with respect to the horizontal plane is smaller than the inclination angle of the normal line H1 of the first reflecting surface 22a. That is, the third reflecting surface 22c is inclined with respect to the horizontal plane so as to face the sun at a time later than the summer time (for example, one hour later).
With such a third reflecting surface 22c, it is possible to reflect many components of sunlight incident from the sun at a time later than the summer time in the middle of the summer solstice in the sky direction.

  In the reflecting wall 1 as described above, as shown in FIG. 2A, the first reflecting surface 22 a can be directly opposed to the sun when the sun is located at the southern middle altitude of the summer solstice. Therefore, the energy of sunlight is the largest in the year, the sunlight can be reflected in the sky direction, and the strong reflection in the unintended direction can be prevented. It can be effectively reduced.

  In addition, by forming the second reflecting surface 22b and the third reflecting surface 22c that face the sun before and after the summer solstice time, the sunlight can be emitted before and after the time that most requires the reflection effect. It can be reflected in the sky direction.

  Moreover, as shown in FIG. 1, since the several reflecting part 20 is formed in the outer wall surface 10a, sunlight can be reflected in the sky direction in the wide range of the outer wall surface 10a, and the temperature rise of the wall 10 is carried out. It can be effectively suppressed.

  Moreover, since the structure is simpler than the configuration in which sunlight is reflected through a plurality of reflecting surfaces, the manufacturing cost can be reduced. Furthermore, since the reflection part 20 is formed by the recessed part 21 formed in the outer wall surface 10a of the wall body 10, while being able to form each reflection surface 22a, 22b, 22c easily with respect to the wall body 10, The thickness of the wall body 10 can be reduced.

The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.
For example, in this embodiment, as shown in FIG. 3B, the outer wall surface 10a is arranged in the south direction, but the direction of the outer wall surface 10a is not limited.
Moreover, in this embodiment, as shown to Fig.3 (a), although the inclination angle with respect to the horizontal surface of the normal line H1 of the 1st reflective surface 22a is match | combined with the south middle altitude A of the summer solstice, It is not limited to the altitude A, and the surrounding environment at the place where the reflecting wall 1 is constructed may be taken into consideration, and the altitude may be adjusted to the south-central altitude when it is effective to reduce the amount of light reflected by the reflecting surface 22a.

  Further, as shown in FIG. 2A, the reflecting portion 20 is formed by a concave portion, but as shown in FIG. 4, the reflecting portion 30 is formed by a protruding portion 31 formed on the outer wall surface 10a of the wall body 10. It can also be formed. In this configuration, the reflecting surfaces 32 a, 32 b, and 32 c can be easily formed on the wall body 10 by forming the reflecting surfaces 32 a, 32 b, and 32 c on the upper surface of the protruding portion 31.

Moreover, like the reflection part 20A shown in FIG. 5, it is located at the southern middle altitude B of the winter solstice, continuously with the first reflecting surface 22a facing the sun located at the southern middle altitude A of the summer solstice. It is also possible to form a fourth reflecting surface 22d facing the sun.
In the fourth reflecting surface 22d, the inclination angle of the normal line H4 with respect to the horizontal plane is set in accordance with the south to middle altitude B of the winter solstice. Since the South-China altitude B is about 30 degrees (angle in the Tokyo region) at the winter solstice time, the normal line H4 of the fourth reflecting surface 22a is inclined at an angle of about 60 degrees with respect to the horizontal plane. ing.
It should be noted that the inclination angle of the normal line H4 of the fourth reflecting surface 22d is set within a range of plus or minus 10 degrees with respect to the south-central altitude B of the winter solstice so that the fourth reflecting surface 22d is in the south-center of the winter solstice. It is possible to face the sun located at the altitude B.
The fourth reflecting surface 22d is finished to have a lower reflectance than the first reflecting surface 22a.

In the reflection part 20A shown in FIG. 5, sunlight is easily irradiated to the fourth reflection surface 22d in winter. Furthermore, since the reflectance of sunlight is low on the fourth reflecting surface 22d, the absorption rate of heat by sunlight can be increased in winter. Therefore, in the reflection part 20A, in the summer, the sunlight can be effectively reflected by the first reflection surface 22a, so that the cooling efficiency in the building can be increased. In the winter, the fourth reflection surface 22d is formed by the sun. By effectively absorbing the heat of light, the heating efficiency in the building can be increased.
In the configuration of FIG. 5, the reflection portion 20 </ b> A is formed on the upward outer wall surface 10 b such as a roof of a building, but the reflection portion 20 </ b> A may be formed on a lateral outer wall surface such as a vertical surface.

DESCRIPTION OF SYMBOLS 1 Reflection wall 10 Wall body 10a Outer wall surface 20 Reflection part 20A Reflection part (other embodiment)
21 Concave portion 21a Back surface 21b Curved surface 21c Bottom portion 22a First reflective surface 22b Second reflective surface 22c Third reflective surface 22d Fourth reflective surface A South mid altitude in summer solstice B South mid altitude in winter solstice H1 First reflective surface Normal line H2 normal line of second reflective surface H3 normal line of third reflective surface H4 normal line of fourth reflective surface

Claims (7)

A first reflective surface;
A second reflecting surface formed continuously on one side of the first reflecting surface;
A reflecting portion having a third reflecting surface formed continuously on the other side of the first reflecting surface is formed on the outer wall surface of the wall body,
The first reflecting surface is inclined so as to face the sun located at the south-middle altitude ,
The normal line of the second reflective surface is inclined in a vertical plane rotated in the southeast direction with respect to the vertical plane where the normal line of the first reflective surface is arranged,
The normal of the third reflecting surface is inclined in a vertical plane rotated in the southwest direction with respect to the vertical plane on which the normal of the first reflecting surface is arranged. wall. 2. The reflecting wall according to claim 1, wherein an inclination angle of a normal line of the first reflecting surface with respect to a horizontal plane is set in accordance with a south-central altitude of the summer solstice. The normal angle of said 2nd reflective surface and the inclination angle of the normal line of said 3rd reflective surface are smaller than the inclination angle of the normal line of said 1st reflective surface, The Claim 1 or Claim characterized by the above-mentioned . The reflecting wall according to 2. The reflective portion is formed with a fourth reflective surface,
The inclination angle of the normal line of the fourth reflecting surface with respect to the horizontal plane is set in accordance with the height of the south and middle of the winter solstice, and the fourth reflecting surface is finished to have a lower reflectance than the first reflecting surface. The reflecting wall according to any one of claims 1 to 3, wherein the reflecting wall is provided. The reflection portion is formed by a recess formed on the outer wall surface of the wall body,
All the said reflective surfaces are formed in the inner surface of the said recessed part, The reflective wall as described in any one of Claims 1-4 characterized by the above-mentioned. The reflection part is formed by a protrusion formed on the outer wall surface of the wall body,
All the said reflective surfaces are formed in the outer surface of the said protrusion part, The reflective wall as described in any one of Claims 1-4 characterized by the above-mentioned.   The reflection wall according to claim 1, wherein a plurality of the reflection portions are formed on an outer wall surface of the wall body.

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