Heat-shielding panels and heat-shielding structures using heat-shielding panels

Abstract

To provide a heat shielding panel for a folded-plate roof, which has a high cooling effect and excellent design for the folded-plate roof.SOLUTION: A heat shielding panel that is connected to a folded-plate roof via a connecting member near the flat upper portion of a convex portion of the folded-plate roof, covers the folded-plate roof convex portion up to the midway of the side along the shape of both sides of the folded-plate roof convex portion, extends parallel to the horizontal plane, and then bends downward at an angle of approximately 45° at both ends is applied over the folded-plate roof to insulate it from heat. Another heat shielding panel is connected to the folded-plate roof via the connecting member near the flat upper portion of the convex portion of the folded-plate roof, and a part of the heat shielding panel is smoothly recessed to form a cavity, thereby forming an approximately circular hole, and the hole follows the recess of the uneven structure, and the heat shielding panel that is regularly arranged directly above the recess is applied over the folded-plate roof to insulate it from heat.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a heat-shielding panel for covering a folded-plate roof, and a heat-shielding structure using the heat-shielding panel.

Background Art

[0002] Folded-plate roofs are uneven structures widely used for roofs of large warehouses, supermarkets and the like. Since folded-plate roofs are formed in an uneven shape, they have excellent drainage performance and do not require a substrate, so they can be installed at low cost. On the other hand, such folded-plate roofs are mainly manufactured using Galvalume steel sheet (registered trademark). When a folded-plate roof is directly exposed to sunlight, the roof itself tends to reach a very high temperature, and consequently the internal space of the building directly below the folded-plate roof also tends to become hot.

[0003] To solve such problems, various measures have been taken to prevent the temperature of folded-plate roofs from rising. For example, there is a technique for preventing temperature rise of a folded-plate roof by providing through holes of approximately 100 mm in diameter at regular intervals in a synthetic resin sheet covering the folded-plate roof to impart air permeability and ventilation performance to the sheet, and allowing wind to flow through the space between the folded-plate roof and the sheet (Patent Document 1), and a technique for lowering the temperature of the internal space of the building under the folded-plate roof by providing a certain gap at the bonded portion between sheets covering the folded-plate roof, and allowing wind to flow through the internal space between the folded-plate roof and the sheet and the gap between the sheets (Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the conventional heat-shielding mechanisms described above are insufficient for cooling corrugated metal roofs. Furthermore, in recent years, a significant rise in average temperatures has been observed due to global warming. As a result, the cost of cooling is increasing, and consequently, CO2 emissions associated with electricity consumption are also rising. For these reasons, the demand for environmentally friendly products has been increasing in recent years.

[0006] Corrugated metal roofs, in particular, are made of metal panels and are often installed in factories and other facilities where machinery is in operation and the room temperature tends to rise. Therefore, cooling costs are higher in factories and similar facilities than in ordinary houses.

[0007] In this invention, the upper part of the corrugated metal roof is Covered with heat-shielding panels This aligns the direction of airflow between the convex and concave sections of the corrugated metal roof, enabling ventilation in a specific direction, which in turn helps prevent the temperature of the corrugated metal roof from rising. technology To provide. [Means for solving the problem]

[0008] The present invention relates to regularly uneven structures, including corrugated metal roofs. A heat-shielding structure comprising multiple heat-shielding panels, wherein the heat-shielding panels are connected to the upper part of the protrusions of the uneven structure, and ventilation openings are provided by the heat-shielding panels to allow air to circulate in the space between the uneven structure and the heat-shielding panels. Furthermore, the heat-shielding panel constituting the heat-shielding structure according to one aspect of the present invention is The above-mentioned uneven structure is connected to the above-mentioned uneven structure via a connecting member near the upper flat portion of the protrusions. flat section and , From both ends of the flat portion outward The shape of both sides of the protrusions of the aforementioned uneven structure And it stretches The above-mentioned uneven structure covers up to the middle of the side portion of the protrusion. Sloping section and , Outward from the aforementioned slope Flat bottom surface of the recess of the aforementioned uneven structure An extended portion that extends parallel to the same , It has a terminal portion that is further bent downward and outward from the extended portion. .

[0009] Furthermore, the present invention, The aforementioned Heat-shielding panels in The uneven structure thing This heat-shielding structure uses a heat-shielding panel, characterized by creating a temperature buffer air layer in the space between the heat-shielding panel and the uneven structure by covering it. Furthermore, the present invention relates to a heat-shielding structure in which a plurality of heat-shielding panels are covered over a regularly uneven structure including a corrugated metal roof, characterized in that the heat-shielding panels are connected to the upper part of the protrusions of the uneven structure, and ventilation openings are provided by the heat-shielding panels that allow ventilation into the space between the uneven structure and the heat-shielding panels. Another aspect of the present invention provides a heat-shielding structure in which the heat-shielding panel has a flat portion connected to the uneven structure via a connecting member near the upper flat portion of the protrusions of the uneven structure; inclined portions extending outward from both ends of the flat portion along the shape of the side surface of the protrusions of the uneven structure and covering up to the middle of the side surface of the protrusions of the uneven structure; extended portions extending outward from the inclined portions parallel to the bottom flat surface of the recesses of the uneven structure; and end portions that are further bent downward and outward from the extended portions, wherein when the heat-shielding panels are arranged in a row by connecting the flat portion to the protrusions of the uneven structure, the ventilation opening is formed by the end portions of adjacent heat-shielding panels that are arranged facing each other.

[0010] Furthermore, the present invention Heat-shielding panels in other embodiments relates to a heat-shielding panel that covers a regular concavo-convex structure including a folded-plate roof, the heat-shielding panel being ,before connected to the concavo-convex structure via a connecting member in the vicinity of the upper flat portion of the convex part of the concavo-convex structure, a part of the heat-shielding panel is smoothly recessed to form a hollow portion, thereby forming a substantially perfect circular hole in plan view, and the holes are regularly arranged substantially directly above the concave portions of the concavo-convex structure along the concave portions ru.

[0011] Furthermore, a heat shielding structure according to another aspect of the present invention is the aforementioned By covering the concavo-convex structure with the heat-shielding panel, a temperature-buffering air layer is generated in the space between the heat-shielding panel and the concavo-convex structure Shielding to form a heat-resistant structure.

[0012] Furthermore, the present invention Heat-shielding panels in other embodiments relates to a heat-shielding panel disposed on the roof portion of a building having a regularly concavo-convex structured roof portion, the heat-shielding panel having a function of buffering temperature changes in the internal space of the building, wherein when the heat-shielding panel is disposed on the roof portion, the heat-shielding panel comprises: ventilation openings for ventilation, which are disposed in the vicinity of the position directly above the side slopes of the concavo-convex structured roof portion along the side slopes; a ventilation opening covering portion which covers the ventilation openings and is disposed above the ventilation openings in a constant inclined manner to guide the ventilation direction; and connection holes for connecting to the upper flat portion of the convex part of the roof portion ru.

[0013] Furthermore, the present invention Heat-shielding structure relating to other embodiments is The aforementioned the one in which the concavo-convex structure is covered with the heat-shielding panel thing .

[0014] Furthermore, the present invention Heat-shielding structure relating to other embodiments is characterized in that a solar panel is disposed on the upper flat portion of the heat-shielding panel ru. Effects of the Invention

[0015] According to the present invention, a significant heat shielding effect can be obtained on a folded-plate roof. Accordingly, it is possible to suppress an increase in air temperature in the internal space located under such a folded-plate roof. In addition, the structure takes into account ventilation mechanisms, sunlight shielding, and the like, and has a high cooling effect. As a result, significant cost reductions due to power saving effects and the like can be expected, and the product is also friendly to the global environment. Furthermore, the product of the present invention has excellent design properties, and its aesthetic appearance is not lost even when disposed on a folded-plate roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] [Figure 1] It is a perspective view showing an installed state of the heat shielding panel according to Embodiment 1 of the present invention. [Figure 2] It is a transverse cross-sectional view showing an installed state of the heat shielding panel according to Embodiment 1 of the present invention. [Figure 3] It is a side view of the heat shielding panel according to Embodiment 1 of the present invention. [Figure 4] It is a bottom view and a plan view of the heat shielding panel according to Embodiment 1 of the present invention. [Figure 5] It is a front view and a perspective view of the heat shielding panel according to Embodiment 1 of the present invention. [Figure 6] It is a perspective view showing an installed state of the heat shielding panel according to Embodiment 2 of the present invention. [Figure 7] It is a transverse cross-sectional view showing an installed state of the heat shielding panel according to Embodiment 2 of the present invention. [Figure 8] It is a plan view of the heat shielding panel according to Embodiment 2 of the present invention. [Figure 9] It is a bottom view of the heat shielding panel according to Embodiment 2 of the present invention. [Figure 10] It is a side view of the heat shielding panel according to Embodiment 2 of the present invention. [Figure 11] It is a perspective view when the heat shielding panel according to Embodiment 3 of the present invention is disposed on a folded-plate roof. [Figure 12] It is a cross-sectional view when the heat shielding panel according to Embodiment 3 of the present invention is disposed on a folded-plate roof. [Figure 13] It is a perspective view of the heat shielding panel according to Embodiment 3 of the present invention. [Figure 14] This is a perspective view showing a solar panel installed on the upper part of a heat-shielding panel according to Embodiment 3 of the present invention. [Modes for carrying out the invention]

[0017] In this invention, a heat-shielding panel is connected to the corrugated metal roof via a connecting member near the upper flat portion of the protrusions, follows the shape of both sides of the protrusions, covers up to the middle of the side portions of the protrusions, extends parallel to the horizontal plane, and then bends downward at approximately 45° at both ends, thereby covering and shielding the corrugated metal roof from heat. Alternatively, another heat-shielding panel is connected to the corrugated metal roof via a connecting member near the upper flat portion of the protrusions, and such a heat-shielding panel has a portion that is smoothly recessed to form a cavity, creating a roughly circular hole. This hole follows the recess of the uneven structure, and heat-shielding panels are regularly arranged directly above the recess to cover and shield the corrugated metal roof from heat, thereby providing a highly effective heat shielding for the corrugated metal roof. structure It provides.

[0018] [1. Structure of a heat-shielding panel according to one embodiment of the present invention] First, one embodiment for carrying out the present invention will be described with reference to the drawings. Figure 1 is a perspective view showing a state in which the heat-shielding panels 3 are arranged to cover a corrugated metal roof (this embodiment will be called Embodiment 1). In this figure, three rows of heat-shielding panels 3 are arranged for three rows of protrusions on the corrugated metal roof, but normally they are used to cover all of the protrusions on the corrugated metal roof. Also, although the depth of the corrugated metal roof is only shown up to a certain point in Figure 1, the protrusions of the corrugated metal roof extend to the far end of the drawing, and the heat-shielding panels cover the protrusions of the corrugated metal roof accordingly.

[0019] Figure 2 is a cross-sectional view of a corrugated metal roof covered with heat-shielding panels during use. This figure is a front view of the cross-section of the corrugated metal roof perspective view in Figure 1. One heat-shielding panel and the corrugated metal roof on both sides are shown, but this part is only a portion of the corrugated metal roof; the heat-shielding panels cover and are installed over the entire corrugated metal roof.

[0020] Figure 3 is a side view of the heat shield panel. The left and right side views are similar. Figure 4 is a bottom view and a top view of the heat shield panel. Figure 5 is a front view and a perspective view of the heat shield panel. The rear view is similar to the front view in Figure 5(a).

[0021] Figure 6 shows a perforated heat shield panel, which is another embodiment of the present invention, and is applicable to a corrugated metal roof. This is a perspective view of a roof covered with a perforated heat-shielding panel. While this diagram shows three rows of corrugated metal roofing, this will vary depending on the size of the roof and the perforated heat-shielding panel. Also, although the depth is only partially shown, the panel will cover the entire corrugated metal roof. Figure 7 is a cross-sectional view of the perforated heat-shielding panel in use when covering a corrugated metal roof. This diagram shows the positions of the through-holes and bolts in the cross-section.

[0022] Figure 8 is a top view of one perforated heat shield panel, which is another embodiment of the present invention. The dotted lines of the through holes indicate the portion where the panel begins to fold smoothly and form the through holes. Figure 9 is a bottom view of one perforated heat shield panel. Figure 10 is a side view of a perforated heat shield panel. The left and right side views of such a perforated heat shield panel are similar to those in Figure 10.

[0023] Next, the structure of the articles constituting the present invention will be explained using Figures 1 to 5. Figure 1 is Embodiment 1 of the present invention This is heat shield panel 3. (This embodiment will be referred to as Embodiment 1) The heat-shielding panel 3 has a structure in which a vertically elongated rectangular metal panel is bent. The type of metal used for the panel is not limited as long as it possesses durability, toughness, etc. The material of the heat-shielding panel 3 may also be synthetic resin, etc. A cushioning material, etc., is placed as a connecting member 4 on the flat part 5a of the upper surface of the convex part of the folded plate roof, and the heat-shielding panel 3 is stacked on top of the cushioning material. The thickness of the cushioning material is approximately 5 mm. The cushioning material is a synthetic resin product such as urethane, but the type of material is not limited as long as it possesses a certain degree of rigidity, durability, and heat retention.

[0024] Furthermore, the flat upper surface portion 3a of the heat shield panel 3 has a planar structure, and this flat upper surface portion 3a of the heat shield panel is parallel to the flat upper surface portion 5a of the corrugated roof 5. In this area, the heat shield panel 3, the connecting member 4, and the flat upper surface portion 5a of the corrugated roof 5 are firmly fixed together at regular intervals along the vertical direction of the heat shield panel 3 using bolts 1 and nuts 2, etc. The bolts 1 are driven in from the bottom of the corrugated roof 5 toward upward, and the structure is such that the corrugated roof 5, the connecting member 4, and the heat shield panel 3 are sandwiched from below and fixed with nuts 2. In this embodiment, bolts and nuts are used for fixing, but any type of fixing device that can fix in a similar manner is acceptable.

[0025] The heat-shielding panel 3 is then bent downward at both ends of the flat upper surface 5a of the corrugated roof so that the surface of the heat-shielding panel 3 and the sloping side surface 5b of the corrugated roof are parallel. The heat-shielding panel 3 is parallel to the surface of the sloping side surface 5b of the corrugated roof and extends downward along this side surface. Connecting members 4 are continuously arranged in this area as well, and even in this sloping area, the connecting members 4 fill the gap space between the heat-shielding panel 3 and the corrugated roof 5.

[0026] Furthermore, the heat-shielding panel 3 runs parallel to the middle of the sloping side portion 5b of the corrugated metal roof (sloping portion 3b of the heat-shielding panel), and then extends laterally so as to be parallel to the ground (lateral extension portion 3c of the heat-shielding panel). After that, it bends downward at a 45-degree angle approximately directly above the bottom surface of the flat portion 5c of the bottom surface of the recess of the corrugated metal roof, forming both ends (end portions 3d of the heat-shielding panel). There are no other members connected to these end portions 3d of the heat-shielding panel, and these end portions 3d have an open structure within the internal space 6 of the recess of the corrugated metal roof. At these end portions 3d of the heat-shielding panel, one end portion 3d of the heat-shielding panel and another adjacent end portion 3d of the heat-shielding panel form a groove structure portion 7. By allowing wind to circulate between these groove structure portions 7, the temperature of the corrugated metal roof 5 can be reduced.

[0027] Next, another embodiment of the present invention is as follows: This is a heat shield panel according to a second embodiment of the present invention.The perforated heat shield panel 11 will be described using Figures 6 to 10 (this embodiment will be called Embodiment 2). The perforated heat shield panel 11 is a vertically elongated rectangular metal panel, with dimensions of approximately 600 mm in height and approximately 1000 mm in width. The perforated heat shield panel 11 has a structure in which through holes 13 are regularly spaced. These through holes 13 are approximately φ30 mm in diameter and are arranged along the flat bottom surface 5c of the folded plate roof recess at approximately 100 mm intervals horizontally. Furthermore, the shape of the through holes 13 is such that the through holes 13 are perforated heat shield Hot The flannel portion 11a is smoothly recessed downwards, and the recessed portion 11b of the perforated heat-shielding panel, which floats in the recessed space 14 of the corrugated roof, forms a hole.

[0028] Similar to the heat shield panel 3 described above, the perforated heat shield panel 11 is installed on the flat upper surface 5a of the protruding part of the corrugated roof via an intermediate member 12, covering the upper part of the intermediate member 12. The thickness of the intermediate member is approximately 5 mm. At this location, a bolt 1 is driven vertically upward from the lower part of the flat upper surface 5a of the protruding part of the corrugated roof, passing through the intermediate member 12 and the perforated heat shield panel 11. The intermediate member 12 and the perforated heat shield panel 11 are then sandwiched and fixed with a nut 2. This fixing part is located directly above the flat upper surface 5a of the protruding part of the corrugated roof and is positioned 200 mm inward from both lateral ends of the perforated heat shield panel 11. The number of such fixing parts depends on the size of the corrugated roof on which the perforated heat shield panel 11 is installed, but for the aforementioned single perforated heat shield panel 11 measuring approximately 600 mm vertically x approximately 1000 mm horizontally, there are approximately 8 fixing points.

[0029] Furthermore, such perforated heat-shielding panel 11 may take on other similar forms. That is, a heat-shielding panel measuring 1000 mm vertically x 1000 mm horizontally, with through-holes arranged at intervals of 100 mm vertically and 200 mm horizontally. Such a heat-shielding panel does not have any connecting parts such as corrugated metal roofs, and is used by directly covering the top of a building without fixing the heat-shielding panel in place.

[0030] [2. Mechanism of low-temperature generation in one embodiment of the present invention] Next, the present invention of This section describes the mechanism of temperature reduction when using heat-shielding panels. First, This section describes a heat-shielding structure in which heat-shielding panels 3 according to Embodiment 1 are arranged in a row on a corrugated metal roof. The mechanism for lowering the temperature involves both ventilation of the internal space 6 of the recessed corrugated roof and a heat-shielding effect on the recessed space of the corrugated roof.

[0031] First, the mechanism of cooling through ventilation in the groove structure section 7 will be described using Figure 2. Wind flows into the internal space 6 of the recessed corrugated roof from the top of the groove structure section 7. The wind flowing in from the top of the heat shield panel 3 moves downward along the protruding part of the corrugated roof, the sloping part 3b of the heat shield panel, the lateral extension part 3c of the heat shield panel, and the end part 3d of the heat shield panel in that order. Then it flows from the groove structure section 7 into the internal space 6 of the recessed corrugated roof. At this time, the wind from the top of the heat shield panel 3 converges toward the narrow groove structure section 7 and passes through the gap between the end parts 3d of the heat shield panel. As a result, the incoming winds converge and pressure is generated. Then, as the wind passes through the gap between the end parts 3d of the heat shield panel and exits into the wider internal space 6 of the recessed corrugated roof, the outflow velocity increases due to the nozzle effect. Therefore, the air flowing into the recessed interior space 6 of the corrugated roof from the groove structure section 7 gains momentum and moves toward the vicinity of the flat bottom surface 5c of the recessed corrugated roof, reaches the sloping side surface 5b of the corrugated roof, is then swirled up and moves toward the upper part of the recessed interior space 6 of the corrugated roof. The heated air in the recessed interior space 6 of the corrugated roof is then pushed by the air that flows in later and moves toward the upper external space from the end of the heat-shielding panel 3 that covers the final end of the corrugated roof, and is discharged as heated air. Through these mechanisms, the air in the recessed interior space 6 of the corrugated roof is agitated, and the heated air is discharged to the outside, preventing an excessive temperature rise in the recessed interior space 6 of the corrugated roof. As a result, it is possible to prevent a temperature rise in the internal space at the bottom of the corrugated roof.

[0032] Next, we will discuss the heat shielding effect on the corrugated metal roof. The heat shielding panel 3 used in Figures 1 and 2 has both ends inclined downward at approximately 45°. Therefore, when sunlight enters the corrugated metal roof 5 at an oblique angle, some of the sunlight is shielded by the lateral extension portion 3c and the end portion 3d of the heat shielding panel 3, reducing the amount of sunlight entering the internal space 6 of the recessed corrugated metal roof. As a result, more shaded areas are created inside the internal space of the recessed corrugated metal roof, which helps to suppress the temperature rise inside the internal space 6 of the recessed corrugated metal roof. Consequently, a reduction in temperature can be expected in the internal space under the corrugated metal roof. Here, since the end portion 3d of the heat shielding panel is inclined downward at approximately 45°, the structure is designed to maintain sufficient airflow while providing an appropriate heat shielding effect.

[0033] Next, as shown in Figures 6 and 7, etc. Heat shielding structure using perforated heat shielding panel 11 according to Embodiment 2 Regarding this, the mechanism of cooling will be described. In this perforated heat shield panel 11, air flows in from the top of the through-hole 13 of the perforated heat shield panel 11. Furthermore, since the through-hole 13 is formed as a smoothly curved recess, air flows in along the recessed portion 11b of the perforated heat shield panel which curves smoothly toward the through-hole 13. Here, since the recessed portion 11b of the perforated heat shield panel is formed as a curve and smoothly, it promotes smooth ventilation from the top of the perforated heat shield panel 11 toward the through-hole 13. In addition, since the through-hole 13 is structured so that the diameter of the hole smoothly contracts from the top to the bottom, backflow of air from the bottom to the top can be reduced, and a unidirectional ventilation direction can be more ensured. As a result, the airflow path is clearly defined, and a sufficient cooling effect is achieved.

[0034] Furthermore, because the through-hole 13 has a structure in which the diameter of the hole is larger at the top and smaller at the bottom, when wind flows into the through-hole 13 from above, it enters the narrower part rather than the wider part, creating pressure. Therefore, when the wind passes through the through-hole 13 and flows out into the recessed space 14 of the corrugated roof, the outflow velocity increases due to the nozzle effect. As a result, the air present in the recessed space 14 of the corrugated roof is more thoroughly agitated.

[0035] The air flowing in through the through-holes 13 moves towards the flat bottom surface 5c of the recessed area of ​​the corrugated roof. A portion of the incoming air hits the vicinity of the flat bottom surface 5c of the recessed area of ​​the corrugated roof and is swirled up, agitating the air in the recessed space 14 of the corrugated roof. This heated air is then discharged to the outside through the through-holes 13 of the perforated heat-shielding panel 11 at the edge of the corrugated roof. Through this mechanism, the perforated heat-shielding panel 11 achieves a sufficiently low temperature in the internal space beneath the corrugated roof.

[0036] Furthermore, regarding the heat shielding effect of the heat shielding method described in Figures 6 and 7, because the through-holes 13 are smoothly formed in a curved shape, when sunlight enters such a part at an oblique angle, a portion of the incoming sunlight can be blocked at the curved surface. This mechanism of blocking sunlight has a greater sun shielding effect compared to when the through-holes are formed in a straight line, because the through-holes 13 are smoothly formed in a curved shape.

[0037] In summary, the curved portion of the through-hole 13 has a highly effective cooling structure that combines the functions of ensuring sufficient airflow while also providing a heat-shielding effect against sunlight. As a result, the temperature rise in the recessed space 14 of the corrugated roof can be suppressed.

[0038] [3. Another Embodiment of the Invention (Embodiment 3)] Next, the present invention other One embodiment Heat-shielding panel and heat-shielding structure using the heat-shielding panel This will be described. Another embodiment of the present invention. Heat-shielding panel 21 Then, the configuration will be as shown in Figure 11 (this embodiment will be called Embodiment 3).

[0039] Embodiment 3 Heat-shielding panel 21 Figure 12 shows a cross-sectional view of the heat shield panel 21 when it is installed on a corrugated metal roof. As shown in Figure 12, the heat shield panel 21 of Embodiment 3 is installed on the corrugated metal roof 20, in contact with the flat bottom surface 20c of the recessed part of the corrugated metal roof 20. At this time, the heat shield panel 21 is installed approximately parallel to the entire corrugated metal roof 20 (for example, if the entire corrugated metal roof is installed so as to be approximately parallel to the horizontal plane, the heat shield panel 21 is also installed approximately parallel to the horizontal plane).

[0040] The heat shield panel 21 is connected to the flat upper surface portion 20a of the protrusions of the corrugated metal roof 20 via other connecting members 22 such as bolts and nuts, similar to the other embodiments described above (Embodiment 1 and Embodiment 2). In one embodiment, these connecting members 22 are provided regularly at regular intervals along the flat upper surface portion 20a of the protrusions, but the position of the connecting members 22 is not limited as long as the heat shield panel 21 can be fixed in place.

[0041] Furthermore, a vent 23, which is a hole for ventilation or airflow, is provided near the flat portion 20a on the upper surface of the protruding portion of the heat shield panel 21. The position of this vent 23 is approximately directly above the sloping side portion 20b. This vent 23 is provided along the sloping side portion 20b, so that in a plan view of the entire heat shield structure, the position of the vent 23 overlaps with a part of the sloping side portion 20b, that is, the vent 23 is approximately parallel to a part of the sloping side portion 20b.

[0042] The shape of the vent 23 may be a roughly rectangular corner shape, as shown in Figure 13, for example, or it may be a configuration in which multiple circular openings are provided along the upper part of the side slope 20b. Alternatively, the vents 23 may be provided in a series along the upper part of the side slope 20b, or sections without vents 23 may be provided regularly.

[0043] Furthermore, a ventilation opening covering portion 24 is provided above the ventilation opening 23 of the heat shield panel 21 to cover the ventilation opening 23 (Figure 12). As an example, the ventilation opening covering portion 24 starts from the contact portion 25, which is the part where the heat shield panel 21 and the flat upper surface portion 20a of the protrusion meet, and extends in an inclined manner toward the opposite side from the connecting member 22 from the contact portion 25.

[0044] Furthermore, the angle of inclination of the ventilation opening covering portion 24 is, as an example, approximately 45 degrees from the main body of the heat shield panel 21.

[0045] The ventilation cover portion 24 that covers the ventilation opening 23 is not provided in areas where there is no ventilation opening 23.

[0046] Furthermore, the ventilation opening covering portion 24 may be formed by bending and molding a part of the heat shield panel 21, or it may be provided by arranging a new metal part.

[0047] Next, we will describe the mechanism of the temperature change buffering function of the building's interior space 30 when the heat shielding panel 21 of Embodiment 3 is installed.

[0048] First, let's describe the ventilation mechanism. As shown in Figure 12, a cross-sectional view of the heat-shielding panel 21 and the corrugated metal roof 20, the wind 31 blowing from the top of the heat-shielding panel 21 hits the vent cover 24 and enters the space 26 below the heat-shielding panel. At this time, since the vent cover 24 is installed at an angle of approximately 45° to the heat-shielding panel 21, an appropriate amount of wind enters the space 26 below the heat-shielding panel.

[0049] The air that enters the lower space 26 of the heat shield panel enters the interior of the lower space 26 and then descends within the space along the sloping side portion 20b. Then, on the flat bottom portion 20c of the recessed surface of the folded plate roof, it collides with another airflow that is flowing into the same lower space 26 of the heat shield panel, causing both airflows to rise to the upper part of the lower space 26 of the heat shield panel and return to the side from which they entered.

[0050] Through the mechanism described above, the air in the space 26 below the heat-shielding panel is constantly agitated. The incoming air is then released into the outside space from the end of the corrugated metal roof, where the space 26 below the heat-shielding panel is exposed to the outside.

[0051] Due to the mechanism described above, the air in the space 26 below the heat-shielding panel is constantly circulated, so the interior space 30 of the building under the corrugated metal roof does not experience an excessive temperature rise.

[0052] Furthermore, since sunlight itself is reflected by the heat-shielding panel 21, the very existence of the heat-shielding panel 21 has a buffering function that mitigates the temperature rise in the interior space 30 of the building.

[0053] Furthermore, as another example of the use of Embodiment 3, as shown in Figure 14, the photovoltaic power generation panel 28 may be installed on a flat portion 27 of the heat shield panel 21 that lacks the connecting member 22, the ventilation opening 23, and the ventilation opening covering portion 24. In this configuration, the ventilation opening 23 prevents excessive temperature rise of the photovoltaic power generation panel 28, which contributes to increasing the efficiency of photovoltaic power generation.

[0054] The dimensions of this heat-shielding panel 21 are, for example, such as a width (with the direction perpendicular to the protrusions of the corrugated metal roof being the width) which is the width between one protrusion of the corrugated metal roof, but it may also be a length that spans multiple protrusions. The vertical dimensions are, for example, approximately 1000 mm, but as long as it can be installed on a corrugated metal roof, it may be of various sizes.

[0055] Therefore, the configuration of the corrugated metal roof can be either a single large plate structure as shown in Figure 14, or multiple short plates joined together and installed side by side.

[0056] [4. Advantages of the present invention, etc.] Next, we will describe the advantages of the heat-shielding panel of the present invention. As mentioned above, by using the heat-shielding panel of the present invention, it is possible to lower the temperature of the internal space under the corrugated metal roof.

[0057] Regarding the temperature change when the heat-shielding panel is installed, temperature measurements that actually measured the temperature reduction showed that the installation of this heat-shielding panel resulted in a temperature drop of 6°C compared to the temperature of the outside space. In this respect, it can be said that the heat-shielding panel of the present invention has a sufficient cooling effect.

[0058] Furthermore, the heat-shielding panels of this invention only need to be installed once, eliminating the need to replace equipment due to seasonal changes. Therefore, they do not require much effort in terms of equipment maintenance.

[0059] Furthermore, once installed, the heat-shielding panel of this invention can be expected to maintain a consistently low temperature in the space beneath it. Therefore, it is more cost-effective and economically superior to cooling with cooling devices such as air conditioners.

[0060] Furthermore, corrugated metal roofs are commonly installed in facilities that operate at high temperatures, such as factories. Therefore, by installing such heat-shielding panels, a large reduction in cooling costs can be expected due to the low-temperature effect. In this respect, the present invention is particularly economically superior in terms of electricity costs.

[0061] Furthermore, these heat-shielding panels are also superior in terms of CO2 reduction costs. Specifically, the amount of CO2 required to lower the temperature of such corrugated metal roofs is only that generated by the electrical energy needed during product manufacturing, and a significant reduction in CO2 emissions can be expected compared to the amount of CO2 generated when continuously cooling with air conditioners, etc. In this respect, this invention is an environmentally conscious product and makes a significant contribution to a sustainable society.

[0062] Furthermore, the heat-shielding structure including the heat-shielding panels (3,11,21) according to Embodiments 1 to 3 can also be said to have the following configuration. That is, the heat-shielding structure is a heat-shielding structure in which a plurality of heat-shielding panels (3,11,21) are covered with a regularly uneven structure including a folded plate roof (5,20), the heat-shielding panels (3,11,21) are connected to the upper part of the protrusions of the uneven structure, and ventilation openings (groove structure portion 7, through hole 13, ventilation opening 23) are provided by the heat-shielding panels (3,11,21) to allow ventilation into the space between the uneven structure and the heat-shielding panels (3,11,21). Furthermore, the heat-shielding panel 3 according to Embodiment 1 can also be said to have the following configuration. In other words, a heat shield panel 3 installed on a regularly uneven structure including a corrugated metal roof 5, having a flat portion (heat shield panel upper flat portion 3a) that is connected to the uneven structure via a connecting member 4 near the upper flat portion of the convex portion of the uneven structure (flat portion 5a of the corrugated metal roof convex portion), a slanted portion (heat shield panel slanted portion 3b) that extends outward from both ends in the width direction of the flat portion (heat shield panel upper flat portion 3a) along the side shape on both sides of the convex portion of the uneven structure and covers up to the middle of the side portion of the convex portion of the uneven structure (slanted portion 5b of the corrugated metal roof side), an extended portion (heat shield panel lateral extended portion 3c) that extends outward from the slanted portion (heat shield panel slanted portion 3b) parallel to the bottom surface of the concave portion of the uneven structure (flat portion 5c of the bottom surface 5c of the corrugated metal roof), and an end portion (heat shield panel end portion 3d) that is further bent downward and outward from the extended portion. Also, Embodiment 1 Heat-shielding panel 3 A heat-shielding structure that includes The gap between the heat shield panels (Groove structure part 7) In this design, the recesses in the folded metal roof are arranged in a straight line. Therefore, when cleaning, it is easy to clean by pushing a broom or similar tool into these gaps and sweeping the debris aside. In this respect, this invention is highly convenient.

[0063] Also, Embodiment 1 Heat-shielding panel 3 A heat-shielding structure that includes The gap between the heat shield panels (Groove structure part 7) In this structure, the folded plate roof has a linearly opening recess. Gap section (groove structure section 7) that functions as a ventilation opening In contrast, when wind blows, the direction of airflow is aligned, and air flows in one direction. As a result, the recessed space of the corrugated metal roof 6 Smooth airflow ensures sufficient cooling effect.

[0064] Furthermore, the heat-shielding structure including the heat-shielding panel according to Embodiment 2 can be said to have the following configuration. That is, in the heat-shielding structure, the heat-shielding panel (perforated heat-shielding panel 11) is a flat plate connected to the uneven structure via connecting members (bolts 1, nuts 2) near the upper flat portion of the protrusions of the uneven structure (flat portion 5a on the upper surface of the protrusions of the corrugated roof), and ventilation openings (through holes 13) are formed at predetermined intervals, penetrating the flat plate so as to be located above the recesses of the uneven structure. Also, Embodiment 2 The perforated heat shield panel 11 is connected to the heat shield panel at the protruding portion of the corrugated roof and penetrates directly above the recessed portion of the corrugated roof. Hole 13All that is required is to install it. Therefore, the size and other specifications can be flexibly changed to match the size of the corrugated metal roof being used, making it easy to use. Furthermore, by using the heat-shielding panel of the present invention, it is possible to easily carry out expansion work as it only needs to be covered from above on an already installed corrugated metal roof. In this respect as well, it is highly convenient.

[0065] Also, Embodiment 2 The perforated heat-shielding panel 11 can be installed on any structure that has a flat area of ​​a certain size, simply by covering the structure with the invention. Therefore, its use is not limited to corrugated metal roofs, making it very convenient.

[0066] Also, Embodiment 2 The perforated heat shield panel 11 may also be installed vertically along the wall. In this embodiment as well, a gap is created between the perforated heat shield panel 11 and the wall, and a temperature reduction can be expected as air circulates through this gap.

[0067] Also, Embodiment 1 The heat-shielding panel 3 has excellent design. Therefore, the appearance of a building on which such heat-shielding panels 3 are installed does not detract from the aesthetics and blends in with the surrounding landscape. In this respect, the heat-shielding panel 3 of the present invention has commercial value. Furthermore, the heat-shielding structure including the heat-shielding panel according to Embodiment 3 can also be said to have the following configuration. That is, in the heat-shielding structure, the heat-shielding panel 21 is a flat plate that is connected to the uneven structure via a connecting member 22 near the upper flat portion of the protrusions of the uneven structure (upper flat portion 20a of the protrusions) and has a flat portion 27 that covers the upper part of the recesses of the uneven structure. Ventilation openings (ventilation openings 23) are formed near both ends in the width direction of the flat plate, and ventilation opening covering portions (ventilation opening covering portions 24) are provided above the ventilation openings (ventilation openings 23) at a certain inclination, and connection holes for inserting the connecting member 22 are formed at positions closer to the ends than the ventilation openings (ventilation openings 23) in the width direction of the flat plate. With this configuration, a flat section 27 can be provided between the ventilation openings 23 near both ends in the width direction of the flat heat-shielding panel 21, on which a solar panel 28 or the like can be placed.

[0068] The embodiments described above are examples of the present invention, and the present invention is not limited to the embodiments described above. Therefore, it goes without saying that various modifications are possible depending on the design, etc., even in embodiments other than those described above, as long as they do not depart from the technical idea of ​​the present invention. Furthermore, the effects described in this embodiment are merely examples, and other effects may also exist. [Explanation of Symbols]

[0069] 1 bolt 2 nuts 3. Heat-shielding panels 4 Connecting Members 5. Corrugated metal roof 6. Internal space of the recessed area of ​​the corrugated metal roof 7 Groove structure part 11 Perforated heat shield panel 12 Intermediary components 13 Through hole 14. Recessed space in a corrugated metal roof 20 corrugated metal roof 21 Heat-shielding panels 22 Connecting Member 23 Ventilation holes 24 Ventilation opening covering 25 Contact area 26 Space below the heat-shielding panel 27 Flat area 28 Solar panels 30 Building interior space 31 Wind

Claims

1. A heat-shielding panel installed on a regularly undulating structure, including a corrugated metal roof, The structure has a flat portion connected to the uneven structure via a connecting member near the upper flat portion of the protrusion of the uneven structure, a slanted portion extending outward from both ends of the flat portion in the width direction along the side shape of both sides of the protrusion of the uneven structure and covering up to the middle of the side portion of the protrusion of the uneven structure, an extended portion extending outward from the slanted portion parallel to the bottom surface of the recess of the uneven structure, and a terminal portion that is further bent downward and outward from the extended portion. A heat-shielding panel characterized by the following features.

2. A heat-shielding structure comprising multiple heat-shielding panels covering a regularly shaped structure including a corrugated metal roof, The heat shield panel is connected to the upper part of the protrusions of the uneven structure, and the heat shield panel provides ventilation openings that allow air to circulate in the space between the uneven structure and the heat shield panel. The aforementioned heat shielding panel is The structure has a flat portion connected to the uneven structure via a connecting member near the upper flat portion of the protrusion of the uneven structure, a slanted portion extending outward from both ends of the flat portion along the shape of the side surface of the protrusion of the uneven structure and covering up to the middle of the side surface of the protrusion of the uneven structure, an extended portion extending outward from the slanted portion parallel to the bottom flat surface of the recess of the uneven structure, and a terminal portion that is further bent downward outward from the extended portion. When the heat shield panels are arranged in a row by connecting the flat portion to the protrusion of the uneven structure, the ventilation opening is formed by the end portions of adjacent heat shield panels that are positioned opposite each other. A heat-shielding structure characterized by the following features.

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