Eaves

Abstract

To provide an eaves capable of switching between blocking solar heat and capturing solar heat.SOLUTION: An eaves 10 provided to an outer wall 102 of a building includes: a top panel 11 that has multiple belt-like solar heat-reflective films 14 formed over the bottom surface 11a at a predetermined interval; a bottom panel 12 arranged parallel to the top panel 11, which has multiple belt-like solar heat reflective films 15 formed on the top surface 12a arranged at a predetermined interval; and a panel movement mechanism 30 that advances / retreats one side of the bottom panel 12 with respect to the top panel 11.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a canopy provided on the exterior wall of a building. [Background technology]

[0002] Eaves are provided above openings of a building so as to protrude from the exterior wall, and serve to provide shade from the sun and rain (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-223346 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, while conventional eaves can block solar heat in the summer, they have the problem of blocking the solar heat that you want to let into the room in the winter. In addition, conventional eaves do not allow light to pass through, so less light enters and the room becomes dark. This is especially true in the summer, when it becomes dark and the view becomes narrow. There are also things like louvered eaves that are designed to let in solar heat in the winter, but they still block the incoming light in the summer, so it becomes dark in the summer and the view becomes narrow.

[0005] The present disclosure has been made in consideration of such problems, and its purpose is to provide a canopy that can switch between blocking solar heat and taking in solar heat. [Means for solving the problem]

[0006] To solve the above problems, one aspect of the present disclosure provides a canopy provided on the exterior wall of a building, the canopy including: a translucent upper panel having a plurality of strip-shaped solar heat reflecting or absorbing films formed at predetermined intervals on its underside; a translucent lower panel arranged parallel to the upper panel having a plurality of strip-shaped solar heat reflecting or absorbing films formed at predetermined intervals on its upper surface; and a panel movement mechanism for moving one of the upper panel and the lower panel toward and away from the other. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a schematic cross-sectional view illustrating a canopy according to an embodiment of the present disclosure. [Figure 2] FIG. 10 is a diagram showing a state in which the lower panel has been moved by the panel moving mechanism. [Figure 3] 3(a) and 3(b) are diagrams for explaining the function of the canopy according to the embodiment of the present disclosure. [Figure 4] 4(a) and 4(b) are diagrams showing an embodiment of the panel moving mechanism. [Figure 5] 5(a) and 5(b) are diagrams showing another embodiment of the panel moving mechanism. [Figure 6] 6(a) and 6(b) are diagrams showing still another embodiment of the panel moving mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0008] The present disclosure will be described below with reference to the drawings based on preferred embodiments. The same or equivalent components and parts shown in each drawing are designated by the same reference numerals, and redundant explanations will be omitted where appropriate. The dimensions of the components in each drawing are enlarged or reduced as appropriate for ease of understanding. Some components that are not important for explaining the embodiments are omitted from the drawings. When terms indicating directions, such as "up," "down," "front," "back," "left," "right," "inside," and "outside," are used in this specification, they refer to the directions in the position in which the eaves are installed on the building.

[0009] 1 is a schematic cross-sectional view illustrating a canopy 10 according to an embodiment of the present disclosure. The canopy 10 is provided above an opening 100 of a building in which a window glass 101 is arranged, protruding laterally from an exterior wall 102.

[0010] As shown in Fig. 1, canopy 10 includes upper and lower panels 11 and 12, which are translucent. Upper and lower panels 11 and 12 are arranged parallel to each other. Upper and lower panels 11 and 12 may be glass panels or resin panels (for example, polycarbonate or acrylic).

[0011] In Figure 1, the upper panel 11 and the lower panel 12 extend horizontally, but they may also be installed so that they slope downward in the protruding direction P of the eave 10 (i.e., the direction from the base 20 to the tip 21).

[0012] In the eaves 10 according to this embodiment, a plurality of strip-shaped solar heat reflecting films 14 are formed on the lower surface 11a of the upper panel 11 at a predetermined interval B in the protruding direction P. Similarly, a plurality of strip-shaped solar heat reflecting films 15 are formed on the upper surface 12a of the lower panel 12 at a predetermined interval B in the protruding direction P. The width A of the solar heat reflecting films 14, 15 is approximately the same as the interval B. The width A and the interval B may be from several mm to several cm.

[0013] The solar heat reflecting films 14, 15 have high visible light transmittance and also have the function of reflecting solar heat, and may be made of, for example, titanium, stainless steel, tin, chromium, or the like.

[0014] The upper panel 11 and the lower panel 12 are arranged parallel to each other so that the solar heat reflecting films 14 and 15 face each other. In FIG. 1, for the sake of explanation, the thickness of the solar heat reflecting films 14 and 15 is exaggerated. The thickness of the solar heat reflecting films 14 and 15 is approximately 0.1 mm, so there are almost no irregularities. Therefore, it should be noted that in reality, there is almost no gap between the lower surface 11a of the upper panel 11 and the upper surface 12a of the lower panel, and the lower surface 11a of the upper panel 11 and the upper surface 12a of the lower panel are in a state of nearly abutting each other.

[0015] In this embodiment, the lower panel 12 is supported so as to be movable in the protruding direction P relative to the upper panel 11 fixed to the exterior wall 102. The support structure for the lower panel 12 is not particularly limited. For example, guide rails may be arranged on both ends of the upper panel 11 and the lower panel 12 in a direction perpendicular to the protruding direction P, thereby supporting the lower panel 12 so as to be movable relative to the upper panel 11.

[0016] The eave 10 according to this embodiment further includes a panel movement mechanism 30. This panel movement mechanism 30 moves the lower panel 12 back and forth relative to the upper panel 11 in the protruding direction P. In FIG. 1, the panel movement mechanism 30 is configured to act on the end of the lower panel 12 on the outer wall 102 side, and is shown as being located within the outer wall 102, but its point of action and position are not particularly limited.

[0017] 1 shows a state in which the lower panel 12 has not been moved relative to the upper panel 11. In this state, the solar heat reflecting films 14, 15 are in approximately the same position in the protruding direction P (i.e., the solar heat reflecting films 14, 15 are exactly overlapping), and a gap 16 exists between the solar heat reflecting films 14, 15.

[0018] 2 shows the state in which the lower panel 12 has been moved by the panel moving mechanism 30. In FIG. 2, the lower panel 12 has been moved a distance C in the protruding direction P relative to the upper panel 11. The distance C is approximately the same as the width A and the interval B. Therefore, with the lower panel 12 moved, the solar heat reflecting films 14 and 15 are positioned alternately in the protruding direction P, and no gaps exist between the solar heat reflecting films.

[0019] 3(a) and 3(b) are diagrams for explaining the function of the canopy 10 according to the embodiment of the present disclosure. Fig. 3(a) shows the state of use in winter, and Fig. 3(b) shows the state of use in summer. Fig. 3(a) and Fig. 3(b) illustrate the solar radiation heat from the sun.

[0020] As shown in Figure 3(a), in winter when the sun's altitude is relatively low, the lower panel 12 is not moved relative to the upper panel 11, i.e., the solar heat reflecting film 14 and the solar heat reflecting film are in approximately the same position in the protruding direction P, and a gap 16 exists between the solar heat reflecting films 14, 15. Therefore, some of the solar heat can be taken in to the inside of the window glass 101 (i.e., the room) through this gap 16 (incident heat). In this way, with the eaves 10 of this embodiment, the necessary solar heat can be taken in to the room in winter, and the solar heat gain coefficient can be made relatively high.

[0021] On the other hand, as shown in Figure 3(b), in the summer when the sun's altitude is relatively high, the lower panel 12 is moved in the protruding direction P relative to the upper panel 11 by the width A (spacing B) of the solar heat reflecting films 14, 15, i.e., the solar heat reflecting films 14 and 15 are positioned alternately in the protruding direction P, and no gaps exist between the solar heat reflecting films 14, 15. Therefore, solar heat is reflected by the solar heat reflecting films 14, 15 and released (reflected heat) above the eaves 10 (i.e., away from the window glass 101). In this way, the eaves 10 of this embodiment can block unnecessary solar heat in the summer, thereby keeping the solar heat gain coefficient relatively low.

[0022] As described above, with the eaves 10 according to this embodiment, it is possible to switch between blocking solar heat and taking in solar heat by moving the lower panel 12 relative to the upper panel 11 only by the width of the solar heat reflecting films 14, 15, i.e., by just a few millimeters to a few centimeters. It is possible to block unnecessary solar heat in the summer and efficiently take in necessary solar heat in the winter, thereby making efficient use of solar energy. Note that while the use of the eaves 10 in the summer and winter has been described here for the sake of clarity, it should be noted that the eaves 10 according to this embodiment can block solar heat when the user feels hot and take in solar heat when the user feels cold, regardless of the season.

[0023] In the eaves 10 according to this embodiment, the upper panel 11, the lower panel, and the solar heat reflecting films 14, 15 transmit visible light, so light can be effectively taken into the room, keeping the room bright. In addition, the eaves 10 according to this embodiment is nearly transparent to the eye, creating a sense of openness.

[0024] 4(a) and 4(b) show an embodiment of the panel movement mechanism. The panel movement mechanism 40 shown in Figures 4(a) and 4(b) is an orthogonal slide mechanism and includes a drive slider 42 and a driven slider 44. The abutment portion 44a of the driven slider 44 is fixed to the end surface of the lower panel 12.

[0025] As shown in Fig. 4(a), when the drive slider 42 is pressed down while the lower panel 12 is not being moved relative to the upper panel 11, the driven slider 44 moves in the protruding direction P and presses the lower panel 12, causing the lower panel 12 to move in the protruding direction P relative to the fixed upper panel 11. This results in the state in which the lower panel 12 has moved relative to the upper panel 11, as shown in Fig. 4(b).

[0026] On the other hand, as shown in Fig. 4(b), when the drive slider 42 is pushed up while the lower panel 12 has been moved relative to the upper panel 11, the driven slider 44 moves in the direction opposite to the protruding direction P, pulling the lower panel 12 and moving the lower panel 12 relative to the fixed upper panel 11 in the direction opposite to the protruding direction P. This results in a state in which the lower panel 12 is not moved relative to the upper panel 11, as shown in Fig. 4(a).

[0027] Figures 5(a) and 5(b) show another embodiment of a panel moving mechanism. The panel moving mechanism 50 shown in Figures 5(a) and 5(b) is a slider-crank mechanism, and includes a crank 52, a slider 54, and a connecting rod 56 that connects the crank 52 and the slider 54. An abutment portion 54a of the slider 54 is fixed to the end surface of the lower panel 12.

[0028] As shown in Fig. 5(a), when crank 52 is rotated counterclockwise around axis 51 while lower panel 12 is not being moved relative to upper panel 11, slider 54 moves in protruding direction P via connecting rod 56 and presses lower panel 12, moving lower panel 12 in protruding direction P relative to fixed upper panel 11. This results in a state in which lower panel 12 has been moved relative to upper panel 11, as shown in Fig. 5(b).

[0029] On the other hand, as shown in Figure 5(b), when crank 52 is rotated clockwise around axis 51 while lower panel 12 has been moved relative to upper panel 11, slider 54 moves in the opposite direction to protruding direction P via connecting rod 56, pulling lower panel 12 and moving lower panel 12 in the opposite direction to protruding direction P relative to fixed upper panel 11. This results in a state in which lower panel 12 is not moved relative to upper panel 11, as shown in Figure 5(a).

[0030] Figures 6(a) and 6(b) show yet another embodiment of a panel movement mechanism. The panel movement mechanism 60 shown in Figures 6(a) and 6(b) is a cross slider mechanism, and includes a lever 62 and a slider 64. An abutment portion 64a of the slider 64 is fixed to the end surface of the lower panel 12.

[0031] As shown in Fig. 6(a), when lever 62 is rotated clockwise around shaft 61 while lower panel 12 is not being moved relative to upper panel 11, slider 64 moves in protruding direction P and presses lower panel 12, moving lower panel 12 in protruding direction P relative to fixed upper panel 11. This results in a state in which lower panel 12 has been moved relative to upper panel 11, as shown in Fig. 6(b).

[0032] On the other hand, as shown in Fig. 6(b), when lever 62 is rotated counterclockwise around shaft 61 while lower panel 12 has been moved relative to upper panel 11, slider 64 moves in the direction opposite to protruding direction P, pulling lower panel 12 and moving lower panel 12 relative to fixed upper panel 11 in the direction opposite to protruding direction P. This results in a state in which lower panel 12 is not moved relative to upper panel 11, as shown in Fig. 6(a).

[0033] Although three examples of the panel movement mechanism have been given above, it should be noted that other mechanisms can also be used. For example, a linear actuator using a motor or a hydraulic mechanism may be used as the panel movement mechanism.

[0034] The present disclosure has been described above based on the embodiments. These embodiments are merely examples, and it will be understood by those skilled in the art that various modifications and changes are possible within the scope of the claims of the present disclosure, and that such modifications and changes are also within the scope of the claims of the present disclosure. Therefore, the descriptions and drawings in this specification should be treated as illustrative rather than restrictive.

[0035] In the above-described embodiment, the solar heat reflecting film is formed on the main surface of the panel in the protruding direction of the eaves, but the solar heat reflecting film may be formed on the main surface of the panel in any predetermined direction.

[0036] The strip-shaped solar heat reflecting film may be formed in a straight line without any interruptions, or may be formed in a straight line with interruptions along the way.

[0037] In the above-described embodiment, a solar heat reflecting film is formed on the main surface of the panel. However, instead, a solar heat absorbing film that absorbs solar heat may be formed. In this case, too, it is possible to switch between blocking solar heat and taking in solar heat. The solar heat absorbing film may be formed from, for example, iron, nickel, cobalt, etc.

[0038] In the above embodiment, the lower panel is movable relative to the fixed upper panel, but the upper panel may also be movable relative to the fixed lower panel.

[0039] In the above embodiment, the eave is described as having two panels, an upper panel and a lower panel, but the number of panels is not limited to two, and more panels may be provided. [Explanation of symbols]

[0040] 10 eaves, 11 upper panel, 12 lower panel, 14 solar heat reflective film, 15 solar heat reflective film, 30, 40, 50, 60 panel movement mechanism, 100 opening, 101 window glass, 102 exterior wall.

Claims

1. A canopy installed on the exterior wall of a building, an upper panel having translucency, the upper panel having a plurality of band-shaped solar heat reflecting films or solar heat absorbing films formed at predetermined intervals on a lower surface thereof; a lower panel having translucency and arranged parallel to the upper panel, the lower panel having a plurality of strip-shaped solar heat reflecting or absorbing films formed at predetermined intervals on an upper surface thereof; a panel moving mechanism that moves one of the upper panel and the lower panel toward and away from the other; Equipped with The panel moving mechanism includes: an orthogonal slide mechanism including a drive slider that can be pushed in a direction perpendicular to the direction of the forward and backward movement of the upper panel or the lower panel, and a driven slider that moves one of the upper panel and the lower panel forward and backward relative to the other in response to the pushing operation of the drive slider; a slider crank mechanism including a rotatable crank and a slider that moves one of the upper panel and the lower panel toward and away from the other in response to the rotation of the crank; A cross slider mechanism including a lever that can be rotated, and a slider that moves one of the upper panel and the lower panel toward or away from the other in response to the rotation of the lever. A canopy characterized by including any one of the above.

2. The canopy according to claim 1 , wherein a width of the solar heat reflecting film or the solar heat absorbing film and the predetermined interval are approximately the same size.

3. The awning according to claim 2 , wherein the panel moving mechanism moves one of the upper panel and the lower panel back and forth relative to the other by a distance substantially equal to a width of the solar heat reflecting film or the solar heat absorbing film.

4. The canopy according to any one of claims 1 to 3, wherein the solar heat reflecting film or the solar heat absorbing film has visible light transmittance.

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