building

Abstract

The aim is to provide a building with a simple structure that prevents the indoor space, where the ceiling is in contact with the attic space, from becoming excessively hot, even if the roof becomes hot due to radiant heat from the sun. [Solution] The wooden building 1 is equipped with an attic space which is the space between the ceiling 77 and the roof 60, an air cooler AC which is attached to the interior space adjacent to the ceiling 77 and sends cool air into the interior space, an air circulation space S1 which is provided in the attic space and communicates with the outdoor space, and a blower F which is attached to the ceiling 77 and sends air from the interior space into the air circulation space S1, and the height of the air circulation space S1 is 2 cm to 20 cm.

Description

Technical Field

[0001] The present invention relates to a building.

Background Art

[0002] Indoor spaces where the ceiling is in contact with the attic space, such as the indoor space of a single-story building or the indoor space on the second floor of a two-story building, become extremely hot in summer. This is because the roof heated by radiant heat from the sun radiates heat into the room as if it were a heater.

[0003] Therefore, there is a demand for a building in which, even if the roof becomes hot due to radiant heat from the sun, the indoor space where the ceiling is in contact with the attic space is suppressed from becoming hot. In particular, in buildings such as temporary houses, offices, rest rooms, and event booths, where construction is premised on cost reduction, even if the roof becomes hot due to radiant heat from the sun, it is required that the indoor space can be suppressed from becoming hot with a simple structure and at a reduced cost.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, in view of the above circumstances, an object of the present invention is to provide a building in which, even if the roof becomes hot due to radiant heat from the sun, the indoor space where the ceiling is in contact with the attic space is suppressed from becoming hot with a simple structure.

Means for Solving the Problems

[0005] In order to solve the above problems, the building according to the present invention includes: "an attic space, which is a space between the ceiling and the roof, a cold air blower that is attached to the indoor space in contact with the ceiling and sends cold air into the indoor space, an air circulation space that is provided in the attic space and communicates with the outdoor space, The system comprises a fan mounted on the ceiling for supplying air from the indoor space to the air circulation space, The height of the aforementioned air circulation space is 2 cm to 20 cm.

[0006] In this configuration, air cooled by a cooling fan is sent from the indoor space to an air circulation space by a blower, and the sent air is circulated in the air circulation space and discharged into the outdoor space. By creating a layer of cool air between the roof and the ceiling, the transfer of heat from the roof, which has become hot due to solar radiation, to the ceiling is suppressed, and the ceiling is cooled by the cool air moving through the air circulation space. Furthermore, since the height of the air circulation space is kept low, between 2 cm and 20 cm, convection is less likely to occur, and the temperature of the air circulating in the air circulation space that would rise due to convection can be suppressed. In other words, in this configuration, the cool air sent into the air circulation space can be moved while remaining cool. Therefore, even if the roof becomes hot due to solar radiation, the rise in the ceiling temperature can be suppressed, and the indoor space can be kept from becoming hot.

[0007] Furthermore, this configuration allows for a simple setup where an air circulation space in the attic is connected to the outdoor space, and a fan is installed in the ceiling. This reduces costs and effectively prevents the indoor space from becoming excessively hot.

[0008] Here, the material of the building to which this configuration is applied is not particularly limited. This invention can be applied to various types of buildings, such as wooden buildings with a main wooden structure, steel-framed buildings such as container houses, and steel buildings known as prefabricated buildings.

[0009] In addition to the above configuration, the building according to the present invention, "A wooden base that is frame-shaped, Multiple wooden pillars erected on the base, A wooden beam section is frame-shaped and is positioned to span between multiple columns at the upper end of the column, Multiple lower support parts that are in contact with the lower surface of the base, It may be made to include a plurality of lifting parts, each being in the shape of a long rod, with its lower end fixed to the lower support part and penetrating the base and the beam part vertically.

[0010] This configuration applies a system that uses a blower to send air from an indoor space into an air circulation space, and then circulates the sent air through the air circulation space before discharging it into an outdoor space, to wooden buildings whose main structure is made of wood and which are transported by lifting.

[0011] Buildings designed for transport often have small attic spaces to keep the overall height low. This has the disadvantage that when the roof becomes hot from solar radiation, the ceiling is more likely to become hot due to the close distance between the roof and the ceiling. In this invention, however, the small attic space can actually be an advantage. In other words, while convection is suppressed by limiting the height of the air circulation space to a small range of 2 cm to 20 cm, if the attic space is small and its height does not exceed 20 cm, the attic space can be used as an air circulation space as is.

[0012] Furthermore, buildings intended for transport, such as small temporary structures, are often required to be manufactured at low cost. As described above, the present invention can suppress the rise in indoor temperature during the summer with a simple configuration, making it suitable for application to wooden buildings that are lifted and transported. The fact that this configuration is suitable for buildings that are lifted and transported will be explained later.

[0013] In addition to the above configuration, the building according to the present invention, "The aforementioned attic space is larger than the aforementioned air circulation space, The attic space may be provided with a partition screen that divides it into the air circulation space and the remaining space.

[0014] This configuration is used when the height of the attic space exceeds 20 cm, either partially or entirely. By simply creating a partitioned section in the attic space, a portion of the attic can be easily converted into an air-circulating space.

[0015] In addition to the above configuration, the building according to the present invention, The system may further be equipped with a lifting attachment that is detachably attached to the upper end of the lifting portion which protrudes upward from the beam portion, and which integrally fixes the upper end and the beam portion.

[0016] The lifting attachment specified in this configuration is used to connect the upper end of the lifting section to the crane's wire when lifting a building, and can be removed after the lifting operation is completed. Here, "fixed as a single unit" means fixing the upper end of the lifting section so that it does not move relative to the beam section, and includes not only cases where the upper end and the beam section are directly fixed, but also cases where they are indirectly fixed via other members. [Effects of the Invention]

[0017] As described above, according to the present invention, even if the roof becomes hot due to radiant heat from the sun, it is possible to provide a building in which the indoor space where the ceiling is in contact with the attic space is prevented from becoming hot with a simple structure. [Brief explanation of the drawing]

[0018] [Figure 1] This is a cross-sectional view of a wooden building, which is a first embodiment of the present invention, and shows the wooden building in the process of being relocated. [Figure 2] (a) is an enlarged cross-sectional view of area A in Figure 1, (b) is an enlarged cross-sectional view of area B in Figure 1, and (c) is an enlarged cross-sectional view of area C in Figure 1. [Figure 3](a) Side view of the high - side suspension attachment in FIG. 1, (b) Side view of the low - side suspension attachment in FIG. 1, (c) Exploded perspective view of the low - side suspension attachment in FIG. 1. [Figure 4] Perspective view showing the state where a suspension frame is attached to the low - side suspension attachment in FIG. 1. [Figure 5] (a) Side view of the wooden building in the state shown in FIG. 4 (however, the outer wall and roof etc. are omitted from the illustration), (b) Plan view of the suspension frame and wire shown in FIG. 5(a). [Figure 6] (a) Cross - sectional view showing the state of attaching the hanger and cap of the metal roof part, (b) Cross - sectional view showing the state where the suspension attachment is removed, (c) Cross - sectional view showing the state where the cover is attached. [Figure 7] (a) Partial front view partially showing the ground - side base and concrete foundation of the wooden building which is a modification of the first embodiment, (b) Partial front view showing the state during the installation of the base on the ground - side base, (c) Partial front view showing the state where the base and the ground - side base are fixed, (d) A view corresponding to part (c) of FIG. 2, which is a partial cross - sectional view partially showing the lower part of the wooden building including the lifting part and the receiving part. [Figure 8] Cross - sectional view of the wooden building of the second embodiment, showing the state during the relocation of the wooden building. [Figure 9] Cross - sectional view of the main part of the wooden building of the third embodiment.

Mode for Carrying Out the Invention

[0019] Hereinafter, a building which is a specific embodiment of the present invention will be described with reference to the drawings. Here, an example in which the present invention is applied to a wooden building that can be relocated by being lifted and transported will be described. Hereinafter, "up" and "down" will be described based on the installation state of the wooden building.

[0020] First, the wooden building 1 of the first embodiment will be described with reference to Figures 1 to 6. The wooden building 1 is a single-story building used on its own, and is a smaller, integrated building compared to a unit-type building that combines multiple units. The wooden building 1 comprises a frame 10, a roof 60, an exterior wall 80, an interior wall 84, a ceiling 77, a floor 85, multiple lower support parts 20, and multiple lifting parts 30.

[0021] The framework 10 comprises a base 11, a plurality of columns 12, and beam sections 13. The base 11, columns 12, and beam sections 13 are made of wood. In other words, the framework 10 is made of wood. The base 11 is formed in a frame shape so as to be aligned horizontally when the wooden building 1 is installed, and is placed on a concrete foundation 90 that supports the wooden building 1. A foundation packing 14 is placed between the base 11 and the concrete foundation 90. The columns 12 are erected on the base 11. The columns 12 are provided at multiple locations, including the four corners of the base 11. The beam section 13 consists of a plurality of beams arranged to span between each column 12 at the upper ends of the columns 12. In the first embodiment, the beam section 13 is formed in a frame shape so as to overlap with the base 11 when viewed from directly above. As a result, the framework 10 as a whole is formed in a substantially rectangular parallelepiped frame shape.

[0022] The roof 60 comprises rafters 61 that constitute the roof structure, roof sheathing 62 and roofing felt 63 that constitute the roof base, and a metal roof section 64. Structural plywood can be used as the roof sheathing 62. The roof 60 is a single-slope roof that slopes from one side of the beam section 13 to the other (sloping downwards from right to left on the plane of the paper in Figure 1). Hereinafter, the direction of the slope of the roof 60 will be simply referred to as the "direction of slope". Multiple rafters 61 are arranged at intervals to span between two parallel beams that constitute the beam section 13 and are fixed to the beam section 13. The roof sheathing 62 and roofing felt 63 are laid on top of the rafters 61 and form a roof base having an upper surface 75 that extends planarly along the direction of slope.

[0023] The exterior wall 80 constitutes the exterior of the wooden building 1. The floor 85, interior wall 84, and ceiling 77 constitute the interior of the wooden building 1. Known materials can be used for these exterior wall 80, floor 85, interior wall 84, and ceiling 77. For example, the exterior wall 80 is composed of structural plywood 81, ventilation battens 82, and wooden exterior wall panels 83 arranged in order from the column 12 toward the exterior.

[0024] The interior wall 84 is composed of multiple flat panels that span between the columns 12 from the interior space side, and the surface facing the interior space is decorated with wallpaper or the like.

[0025] Furthermore, the ceiling 77 is composed of multiple flat boards, each board being supported from above by multiple joists 78 spaced apart in a direction perpendicular to the columns 12. The joists 78 are supported by the beam section 13 via hangers and joist supports (not shown).

[0026] The attic space, which is the space between the ceiling 77 and the roof 60, is connected to the outdoor space via a ventilation trim 79, thereby forming an air circulation space S1. The height of the air circulation space S1, that is, the distance between the ceiling 77 and the roof sheathing 62, is set to be in the range of 2 cm to 20 cm. In other words, in this embodiment, the entire attic space is the air circulation space S1.

[0027] The ventilation trim 79 is formed by bending a long, narrow metal plate, and the cross-sectional shape when cut perpendicular to the longitudinal direction is a continuous U-shape that opens upward and a U-shape that opens downward. The opening end of the U-shaped portion that opens upward is fixed to the eaves of the roof 60, and the U-shaped portion that opens downward is placed over the upper end of the wooden exterior wall panel 83, with its opening end inserted into the space between the wooden exterior wall panel 83 and the structural plywood 81. Numerous slits 79h are provided through the ventilation trim 79, extending from the bottom surface of the U-shaped portion that opens upward to the side adjacent to this bottom surface on the exterior wall 80 side.

[0028] A blower F is installed on the ceiling 77, and when the blower F is operated, air from the indoor space is sent into the air circulation space S1. The sent air circulates through the air circulation space S1 and is discharged into the outdoor space through the slit 79h of the ventilation trim 79. Therefore, by continuing to operate the blower F, a constant flow of air from the blower F towards the ventilation trim 79 is created.

[0029] The floor 85 is composed of insulation material 86, structural plywood 87, and flooring material 88, which are arranged in order from the base 11 toward the interior space.

[0030] In the first embodiment, the roof 60 is a corrugated metal roof. The metal roof section 64 includes a groove plate 65, a cover 70, a hanger 72, and a cap 74 (see Figure 6). There are multiple groove plates 65, each having a thin plate-shaped roof surface section 66 that extends along the upper surface 75 of the roof substrate, and rising sections 67 erected from both ends of the roof surface section 66 in a direction perpendicular to the inclination direction. The multiple groove plates 65 are arranged in a direction perpendicular to the inclination direction. Each of the multiple groove plates 65 is spaced apart between its own rising section 67 and the rising section 67 of the adjacent groove plate 65. Of the multiple groove plates 65, two adjacent groove plates 65 may be arranged on either side of a lifting section 30, which will be described in detail later (Case 1), or they may be arranged in a position where there is no lifting section 30 between them (Case 2).

[0031] In Case 1 described above, the upper end 31 of the lifting portion 30 protrudes from the upper surface 75 of the roof base between the rising portions 67 of the two adjacent groove plates 65, as will be described later. A core timber 71 made of wood is placed in the space between the two rising portions 67 at a position that does not interfere with the upper end 31. Then, a cover 70 is placed over the two rising portions 67 and the core timber 71 (see Figure 6(c)).

[0032] In Case 2 described above, a U-shaped hanger 72 with an angular cross-section is fitted between the rising portions 67 of two adjacent groove plates 65. The bottom of the hanger 72 is fixed to the roof base and rafters 61 with screws 73. A cap 74 is then placed over the two rising portions 67 and the hanger 72. The cap 74 is crimped and fixed on both sides in a direction perpendicular to the inclination direction (see Figures 6(a) and (b)).

[0033] The lower support portion 20 is a metal member that abuts against the lower surface 16 of the base 11. In the first embodiment, the lower support portion 20 is made of a flat plate and is positioned so that its thickness direction coincides with the vertical direction. The lower support portion 20 also has an extension portion 21 that extends outward (towards the outdoor side) from the base 11. An internal through hole 22 that penetrates vertically is formed in the portion of the lower support portion 20 that abuts against the lower surface 16 of the base 11. An external through hole 23 that penetrates vertically is formed in the extension portion 21 (see Figure 2(c)).

[0034] Furthermore, the lower support sections 20 are provided in multiple locations in a distributed manner so that they can evenly support the load of the lifted wooden building 1, as described later. In the first embodiment, the lower support sections 20 are provided in four locations. A plate receiving groove 15 that is recessed upward is formed in the lower part of the base 11. The lower surface 16 is the bottom surface of the base 11 within the plate receiving groove 15. The lower support sections 20 are housed in the plate receiving groove 15, and the bottom surface of the lower support sections 20 is on the same plane as the bottom surface of the part of the base 11 where the plate receiving groove 15 is not formed (see the enlarged view of the lower part in Figure 5(a)).

[0035] The lifting section 30 is long and rod-shaped, with its lower end fixed to the lower support section 20, and penetrates the base 11 and beam section 13 vertically. In the first embodiment, the lifting section 30 is made of metal and is provided at four positions that overlap with the rafters 61 when viewed from directly above, corresponding to the number of lower support sections 20. The lifting section 30 penetrates the lower support section 20, base 11, beam section 13, rafters 61, and roof underlayment (roof sheathing 62 and roofing felt 63) in order from bottom to top. The upper end 31 of the lifting section 30 protrudes above the upper surface 75 of the roof underlayment.

[0036] Specifically, the lifting section 30 is equipped with three rod-shaped members that can be divided into multiple parts vertically. In this embodiment, these three rod-shaped members are a lower bolt 32, an intermediate bolt 34, and an upper bolt 35. The lower bolt 32 is a bolt with a head, which is inserted from below into the inner insertion hole 22 of the lower support section 20 and passes through the base 11, and is detachably fastened from above the base 11 with a nut 36. As a result, the lower support section 20 and the base 11 are sandwiched between the head 33 of the lower bolt 32 and the nut 36, and are fixed together as one unit. The intermediate bolt 34 is a fully threaded bolt and is positioned to extend upward from the lower bolt 32. The lower end of the intermediate bolt 34 is detachably connected to the upper end of the lower bolt 32 with a long nut 37. The upper bolt 35 is a fully threaded bolt and is positioned to extend upward from the intermediate bolt 34. The lower end of the upper bolt 35 is detachably connected to the upper end of the intermediate bolt 34 by a long nut 37.

[0037] Anchor bolts 91 are embedded in the concrete foundation 90 that supports the wooden building 1. The upper part of the anchor bolts 91 protrudes above the concrete foundation 90. The protruding portion of the anchor bolts 91 is inserted from below into the outer insertion hole 23 of the extension portion 21 and secured with a nut 92 (see Figure 2(c)). In this way, the base 11 is fixed to the concrete foundation 90 via the lower support portion 20. The lower support portion 20 serves both as a fixing bracket for fixing the wooden building 1 to the concrete foundation 90 in this manner, and as described above, it also serves to fix the lower end of the lifting portion 30 to the base 11.

[0038] The detailed procedure for relocation will be described later, but in the relocation in progress shown in Figure 1, the upper end portion 31 (upper end portion of the upper bolt 35) of the lifting portion 30 that protrudes upward from the upper surface 75 of the roof base is detachably fitted with lifting attachments 40 and 50 that integrally fix the upper end portion 31 and the beam portion 13. The upper end portion 31 is provided to be as short in the vertical direction as possible while still allowing the lifting attachments 40 and 50 to be detachably fitted. In the first embodiment, the upper end portion 31 is the portion of the upper bolt 35 that extends above the upper surface 75 and is of a length that does not protrude above the rising portion 67. The lifting attachment 40 is used on the higher side of the sloping roof 60, and the lifting attachment 50 is used on the lower side of the roof 60.

[0039] Specifically, the lifting attachment 40 on the high-altitude side comprises an eyebolt 41, a long nut 43, and a fixing plate 44. The eyebolt 41 has a bolt portion 42a and a ring portion 42b, and the ring portion 42b connects it to the lifting frame 95 of the crane.

[0040] The fixing plate 44 is a metal member interposed between the seating surface of the eyebolt 41 and the upper surface of the roof surface portion 66 of the groove plate 65. The fixing plate 44 consists of a central raised portion 45 having a U-shaped cross-section that opens downwards, and two flat roof surface contact portions 46 that extend outward from both ends of the central raised portion 45. An insertion hole 47 is drilled in the upper center of the central raised portion 45.

[0041] When attaching the suspension attachment 40 to the roof 60, the bolt portion 42a of the eyebolt 41 is inserted from above into the insertion hole 47 of the fixing plate 44, and the upper end portion 31 protruding from the upper surface 75 of the roof substrate at the suspension portion 30 and the bolt portion 42a are connected with a long nut 43. As a result, interference between the two rising portions 67 on both sides of the upper end portion 3 and the fixing plate 44 is avoided by the central raised portion 45, and the two roof surface contact portions 46 come into contact with the roof surface portion 66. A cushioning material (not shown) is placed below the roof surface contact portions 46 to prevent damage to the metal roof portion 64. The roof surface contact portions 46 are formed at an angle with respect to the horizontal plane so as to follow the inclined roof surface, i.e., the upper surface of the roof surface portion 66.

[0042] The only differences between the lower-side suspension attachment 50 and the suspension attachment 40 are that the lower-side suspension attachment 50 is further equipped with a connecting bolt 51 and a long nut 53, and that the central raised portion 55 of the fixing plate 54 is formed to be higher in the vertical direction compared to the central raised portion 45 of the fixing plate 44. Otherwise, the configuration is the same and it is attached to the roof 60 in the same way. The connecting bolt 51 and the long nut 53 are provided between the eye bolt 41 and the long nut 43. The height of the central raised portion 55 and the length of the connecting bolt 51 are set to match the slope of the roof 60, so that the height of the ring portion 42b of the suspension attachment 40 and the height of the ring portion 42b of the suspension attachment 50 are the same.

[0043] When attaching the lifting attachments 40 and 50 to the roof 60, screwing the long nut 43 into the upper end 31 causes the seating surface of the eyebolt 41 to push down on the central raised portion 45 and 55, and the roof surface contact portion 46 to press against the roof 60. At this time, the fixing plates 44 and 54 act as interpositions between the eyebolt 41 and the roof 60, bracing vertically and resisting the force that would cause the eyebolt 41 and the long nut 43 to move downward. As a result, a tensile force (axial force) is generated in the lifting portion 30 and a compressive force (tightening force) is generated in the fixing plate 44, and the upper end 31 is fixed integrally with the roof 60 and the beam portion 13. In the first embodiment, the long nut 43 is screwed into the upper end 31 such that the above-mentioned tightening force is greater than the lifting force applied to the lifting portion 30 (the force acting on the lifting portion 30 when lifting the wooden building 1 via the lifting attachments 40 and 50).

[0044] The lifting frame 95 comprises two H-shaped steel beams 93 and two connecting steel beams 94 that connect the ends of the two H-shaped steel beams 93, and is formed in a rectangular frame shape when viewed from above. The lifting frame 95 is connected to the ring portion 42b by connecting shafts 96 attached to each of the four corners (see Figure 4). The lifting frame 95 also has wire shafts 97 attached to each of the four corners near the connecting shafts 96. In order to suspend the lifting frame 95 from one location, one end of a wire 98 is attached to each wire shaft 97, and the other ends of the four wires are bundled together and connected to the crane (see Figures 5(a) and (b)).

[0045] In the completed installation state of the wooden building 1 shown in Figure 6(c), the lifting attachments 40 and 50 have been removed, as will be described later. In this state, of the components used for lifting the wooden building 1, only the upper end portion 31 protrudes above the upper surface 75 of the roof base. The upper end portion 31 is covered by the exterior cover 70 so that it is not visible from the outside. When the wooden building 1 is moved again, the cover 70 is removed and the lifting attachments 40 and 50 are attached to the upper end portion 31.

[0046] As described above, in the wooden building 1 of the first embodiment, the framework 10, consisting of the base 11, columns 12, and beams 13, is made of wood. Multiple lower support parts 20 are arranged on the lower surface 16 of the base 11, which abut against the lower surface 16. The lower end of a long rod-shaped lifting part 30 is fixed to the lower support parts 20. The lifting part 30 penetrates the base 11 and beams 13 vertically. As a result, the wooden building 1 can be lifted by connecting the portion of the lifting part 30 that protrudes above the upper surface 75 of the roof base to the crane's wire. At this time, even though the crane's wire is connected to the top of the wooden building 1 for lifting, the wooden building 1 is lifted from below the base 11. Therefore, the framework 10 can be lifted without deformation or damage.

[0047] Furthermore, in the first embodiment, the lifting force is applied to the base 11 via the lifting unit 30, lifting the base 11 from below, making it possible to lift and move the building with the interior and exterior already finished. For example, a wooden building 1 can be lifted and moved with one or both of the interior and exterior already finished in the factory, and even after it has been installed at the installation site and the interior and exterior have been finished, it can be moved again.

[0048] Furthermore, in the first embodiment, since the lifting section 30 penetrates the base 11 and the beam section 13 vertically, the lifting section 30 is positioned between the interior wall 84 and the exterior wall 80, similar to the column 12. As a result, the lifting section 30 becomes invisible from the outside of the wooden building 1 when the exterior wall 80 is installed, and can also be made invisible from the outside of the wooden building 1 when the interior wall 84 is finished.

[0049] Furthermore, in the first embodiment, since the frame 10 is made of wood, the weight of the wooden building 1 is lighter compared to conventional container houses and the like, where the frame is made of steel, making transportation and lifting work easier when relocating. Regarding transportation, it becomes possible to transport the wooden building 1 with a smaller transport vehicle with a lower load capacity limit, making it possible to transport even when it is necessary to go through narrow roads, for example. Regarding lifting work, there is more leeway in the lifting load limit of the crane, allowing for safer work. In addition, if there is not enough space around the installation site and both a transport vehicle and a crane truck cannot enter, it is conceivable to use a truck with a crane mounted between the driver's seat and the cargo bed to perform both transportation and lifting work. Even when using such a crane-equipped truck, the relatively lightweight wooden building 1 of the first embodiment can relatively easily meet the load capacity limit and lifting load limit conditions.

[0050] Furthermore, in the first embodiment, the lifting section 30 is divisible into multiple parts. Specifically, it is divisible between the lower bolt 32 and the intermediate bolt 34 above the base 11, and between the intermediate bolt 34 and the upper bolt 35 below the beam section 13. Therefore, when installing the lifting section 30 so as to penetrate the base 11 and the beam section 13 vertically, the divided parts can be attached one by one, making installation easier compared to the case where the lifting section consists of a single long rod-shaped member. Also, if it becomes necessary to replace the lifting section 30 after lifting, it is possible to replace it partially in divided units rather than replacing the entire lifting section 30, that is, to replace each of the lower bolt 32, intermediate bolt 34, and upper bolt 35 individually. In addition, when the wooden building 1 is installed in its location (when it does not need to be lifted), the intermediate bolt 34 can be removed.

[0051] Furthermore, in the first embodiment, the suspension attachments 40 and 50 are attached to the upper end portion 31, and the upper end portion 31 is fixed integrally with the beam portion 13 and the roof 60. This prevents the wooden building 1 from swaying when lifted, even if there is a clearance between the lifting portion 30, which is inserted through the through hole formed in the beam portion 13 and the roof 60, and the through hole, due to the lifting portion 30 moving relative to the through hole by the amount of the clearance.

[0052] Furthermore, in the first embodiment, lifting attachments 40 and 50 with different heights are used to match the slope of the roof 60. Specifically, the length of each part is set so that the height of the ring portion 42b of the lifting attachment 40 on the higher side is the same as the height of the ring portion 42b of the lifting attachment 50 on the lower side. As a result, the wooden building 1 can be lifted while maintaining a horizontal position using a single wire of the crane (a wire connected to four bundled wires 98).

[0053] Furthermore, in the first embodiment, when attaching the lifting attachments 40 and 50, the long nuts 43 are screwed into the upper end portion 31 such that the tightening force of the long nuts 43 is greater than the lifting force applied to the lifting portion 30. Therefore, when the wooden building 1 is lifted by the crane, it is possible to prevent the lifting attachments 40 and 50 from becoming loose. Consequently, the swaying of the lifted wooden building 1 can be minimized, and the workability when placing it on the concrete foundation 90 is improved.

[0054] Furthermore, in the first embodiment, the crane's lifting device (lifting frame 95) is not directly connected to the upper end 31, but is connected via the lifting attachments 40 and 50. This reduces the risk of damage to the lifting frame 95 from hitting the roof 60 or the like during preparatory work before lifting. Also, during the preparatory work, the lifting frame 95 can be placed on the lifting attachments 40 and 50 before the connection work can be carried out calmly.

[0055] Furthermore, in the first embodiment, the crane is connected to the upper end 31 using a frame-shaped lifting frame 95. This allows the upper end 31 to be lifted straight up when the wooden building 1 is lifted. If the crane's wires 98 were directly connected to each upper end 31, a force would act to pull the tip of each upper end 31 towards the lifting center, potentially causing the lifting section 30 to bend and become distorted. In contrast, in the first embodiment, the upper end 31 can be lifted straight up, thus minimizing distortion of the lifting section 30.

[0056] Furthermore, in the first embodiment, the lower support portion 20 has an extension portion 21 that extends outward from the base 11. An external insertion hole 23 is formed in the extension portion 21 that penetrates vertically. The extension portion 21 is fastened with an anchor bolt 91 inserted through the external insertion hole 23 from below and secured with a nut 92. In this way, the lower support portion 20 that supports the base 11 from below when lifting the wooden building 1 also serves as a fixing bracket for fixing the wooden building 1 to the concrete foundation 90. Therefore, there is no need to provide a separate fixing bracket, and the number of parts can be reduced.

[0057] Next, a method for relocating wooden building 1 will be described. This relocation method includes an attachment installation step, a first lifting step, a transportation step, a second lifting step, a fixing step, an attachment removal step, and a cover installation step.

[0058] In the attachment installation process, lifting attachments 40 and 50 are detachably attached to the upper end 31 of the lifting section 30 that protrudes upward from the beam section 13. In the first lifting process, the wooden building 1 is lifted by a crane via the lifting attachments 40 and 50 and placed on a transport vehicle. If the lifting location is a factory, a hoist may be used instead of a crane. In the transport process, the wooden building 1 is transported by the transport vehicle to the installation site where the concrete foundation 90 is located.

[0059] In the second lifting process, the wooden building 1 is lifted by a crane via the lifting attachments 40 and 50 and placed on the concrete foundation 90. In the fixing process, the wooden building 1 is fixed to the concrete foundation 90 by fastening the extension 21 to anchor bolts 91 embedded in the concrete foundation 90 with nuts 92. In the attachment removal process, the lifting attachments 40 and 50 are removed from the upper end 31. In the cover installation process, the upper end 31 is covered with a cover 70 so that it is not visible from the outside.

[0060] As described above, according to the method for relocating the wooden building 1 of the first embodiment, the suspension attachments 40 and 50 are detachably attached to the upper end portion 31, and when the installation on the concrete foundation 90 is completed, the suspension attachments 40 and 50 are removed from the upper end portion 31. By making the suspension attachments 40 and 50 detachable in this way, the only part of the structure provided for lifting that protrudes above the beam portion 13 is the upper end portion 31 of the lifting portion 30. Therefore, the upper end portion 31 can be easily covered with a cover 70 (part of the roof) so that it is not visible from the outside. In particular, in the first embodiment, the roof 60 is a corrugated metal roof, and the upper end portion 31 is positioned between the rising portions 67 of two adjacent groove plates 65. By providing the cover 70 so as to cover the space between these two rising portions 67 from above, the area where the cover 70 is attached is almost indistinguishable from the area where the hangers 68 and caps 71 of the corrugated metal roof are located. Therefore, it is not apparent from the outside that the upper end portion 31 protrudes upward from the upper surface 75 of the roof underlayment.

[0061] Next, a modified example of the wooden building 1 of the first embodiment, wooden building 1B, will be described with reference to Figure 7. Compared to wooden building 1, wooden building 1B differs in that it has a lower support portion 20B instead of the lower support portion 20, and a ground-side base 17 is placed below the base 11, but the other configurations are the same. In the following, the same reference numerals are used for components similar to those in the first embodiment, and detailed explanations are omitted. The lower support portion 20B does not extend outward beyond the base 11, and corresponds to a configuration in which the extension portion 21 is removed from the lower support portion 20.

[0062] The ground-side base 17 is made of wood, is frame-shaped, and is fixed to the concrete foundation 90 using anchor bolts 91 and nuts 92. A positioning projection 18 is provided on the upper surface of the ground-side base 17. Here, the positioning projection 18 is made of a pin. A positioning recess 19 is provided on the lower surface of the base 11. The positioning recess 19 is made of a hole that fits into the positioning projection 18, and by fitting into the positioning projection 18, the base 11 is positioned when it is placed on the ground-side base 17. The base 11 is fixed to the ground-side base 17 using a plate-shaped connecting member 25 that is positioned to bridge the gap between the base 11 and the ground-side base 17, and a number of screws.

[0063] As described above, according to the wooden building 1B, which is a modified version of the first embodiment, the framework 10 is made of wood, but it can be lifted without deforming or damaging the framework 10, just like the wooden building 1 of the first embodiment.

[0064] Furthermore, in this modified version, after fixing the ground-side base 17 to the concrete foundation 90, the wooden building 1B (excluding the ground-side base 17) is lifted and placed on the ground-side base 17, and the base 11 and the ground-side base 17 are fixed together with the connecting member 25, thereby completing the installation of the wooden building 1B. Therefore, the installation work of the wooden building 1B is easy. In addition, since the ground-side base 17 can be manufactured in the same factory as the base 11, sufficient positioning accuracy between the positioning protrusion 18 and the positioning recess 19 can be ensured.

[0065] Furthermore, when the base 11 and the ground-side base 17 are stacked and placed on top of the concrete foundation 90, as in the case of wooden building 1B, the underfloor space between the floor 85 and the concrete foundation 90 can be made wider by the height of the ground-side base 17 compared to when only the base 11 is placed on the concrete foundation 90. As a result, plumbing and other water-related pipes can be housed in the underfloor space. When multiple wooden buildings 1B are used as units to constitute a single building, the building formed by combining these units may require water supply and drainage facilities at locations different from those adjacent to the exterior walls. In such cases, adopting a configuration that allows plumbing and other water-related pipes to be housed in the underfloor space, as in this embodiment, is suitable. Such a configuration significantly increases the freedom of the floor plan within the building formed by combining the units.

[0066] The wooden building structure 1,1B is completed in its main parts at the factory, then transported by transport vehicle and installed at the installation site. After installation, as described above, the lifting attachments 40 and 50 are removed, and the roof 60 is finished by covering it with cover 70. In addition, plumbing and gas piping and electrical wiring are installed, and the water supply, drainage and gas equipment are attached to the wooden building structure 1,1B. Furthermore, an air cooler AC that sends cool air into the interior space is installed on the interior wall 84. As the air cooler AC, an air conditioner that has both cooling and heating functions or a cooler that has only a cooling function can be used.

[0067] In summer, the roof 60 becomes extremely hot due to solar radiation, and this heat is transferred to the ceiling 77 by radiation and conduction, and further to the interior walls 84 and floor 85, causing the temperature of the indoor space to rise. In such cases, even if an air cooler AC is operated in the indoor space, the temperature of the indoor space often does not drop sufficiently. In particular, in wooden buildings 1,1B, which are designed to be transported, the attic space is smaller than in normal buildings in order to keep the overall height down, and the distance between the roof and ceiling is small, so heat is easily transferred from the roof, which has become hot from solar radiation, to the ceiling, and the temperature of the indoor area tends to rise as the ceiling becomes hot.

[0068] Therefore, in wooden building 1,1B, the air cooler AC is operated, and then the fan F installed on the ceiling 77 is also operated. As a result, the air in the indoor space cooled by the cool air sent from the air cooler AC is sent by the fan F into the air circulation space S1, circulates inside the air circulation space S1, and is then discharged from the slit 79h of the ventilation trim 79 at the eaves. This creates a layer of air in which cool air is constantly moving along the ceiling 77 in the air circulation space S1. This layer of cool air acts as a barrier to heat transfer from the roof 60, which has become hot due to solar radiation, to the ceiling 77, and the ceiling 77 is cooled by the moving cool air. As a result, the temperature of the interior walls 84 and floor 85 decreases via the ceiling 77, and the temperature of the indoor space decreases.

[0069] As a result, the effect of the air cooler AC in lowering the temperature of the indoor space is enhanced, and the temperature of the air sent from the indoor space to the air circulation space S1 via the fan F is also lowered, resulting in a better circulation effect where the ceiling 77 is cooled by the cool air circulating in the air circulation space S1.

[0070] In this case, if the air circulation space S1 is a large space, convection will occur due to the temperature difference between the cold air sent in via the blower F and the warm air heated by the high-temperature roof 60, causing the temperature of the air circulating in the air circulation space S1 to rise, which may reduce the cooling effect of the air circulating in the air circulation space S1 on the ceiling 77. In contrast, in this embodiment, the height of the air circulation space S1 (the distance between the ceiling 77 and the roof sheathing 62) is kept small, between 2 cm and 20 cm, so the above-mentioned convection is less likely to occur. In other words, the cold air sent into the air circulation space S1 by the blower F moves from the blower F towards the ventilation trim 79 while remaining cold. Therefore, the ceiling 77 is effectively cooled by a layer of cold air that continues to move while remaining cold, resulting in the above-mentioned good circulation effect and allowing the air cooler AC to efficiently exert its effect of lowering the temperature of the indoor space.

[0071] In wooden building 1, insulation material IS is placed on the upper surface of the ceiling 77, and insulation material IS is in contact with the air circulation space S1. Therefore, the insulation material IS is continuously cooled by the cold air that continues to move through the air circulation space S1. This insulation material IS has the effect of suppressing the movement of heat from the indoor space to the outdoors through the ceiling when the temperature of the indoor space is higher than the temperature of the outside air, such as in winter.

[0072] A test was conducted to measure the temperature change inside a building caused by circulating cool air in an air circulation space S1, using a building with the same configuration as wooden building 1. The height of the air circulation space S1 was set to 20 cm. The test was conducted on a building located in Yamato City, Gujo City, Gifu Prefecture, during the daytime on September 3, 2025. The interior space of the building was equivalent to 3 tatami mats in size, and the air cooler AC was set to 26°C. After a predetermined amount of time had elapsed since the air cooler AC was running, but the blower F was not running, the temperatures of the outer surface of the roof 60, the east, south, west, and north surfaces of the exterior wall 80, the roof 60 side of the ceiling 77, the east, south, west, and north surfaces of the interior wall 84, and the interior space side of the floor 85 were measured. Subsequently, the blower F was activated, and the temperatures of the ceiling 77 facing the roof 60, the east, south, west, and north sides of the interior wall 84, and the floor 85 facing the interior space were measured 10 minutes and 30 minutes after the start of operation. The measurement results are shown in Table 1. Although the building being tested is located outdoors, the presence of the air circulation space S1 and blower F in the building cannot be seen from the outside, therefore this test is not a public test.

[0073] [Table 1]

[0074] As shown in Table 1, outside the building, the roof temperature was high, exceeding 50°C, and the exterior wall temperature was also high, exceeding 45°C. Inside the building, even with the air cooler set to 26°C, the ceiling, interior walls, and floor were all high, exceeding 40°C, when the fan was not running. However, after the fan was started, the temperature in all areas decreased over time, dropping by approximately 10°C to over ten°C after 30 minutes. In particular, the ceiling temperature was the highest when the fan was started, and it was the lowest temperature after 10 minutes and 30 minutes.

[0075] Based on these considerations, it was hypothesized that by sending air cooled by the air cooler AC from the indoor space to the air circulation space S1 via the blower F, a layer of cool air is created between the roof 60 and the ceiling 77. This suppresses the transfer of heat from the roof 60, which has become hot due to solar radiation, to the ceiling 77, while simultaneously cooling the ceiling 77 with constantly moving, cool air. Furthermore, it was hypothesized that the cooling of the ceiling 77 would suppress radiation and heat conduction from the ceiling 77, and as the temperature of the ceiling 77 decreases, the temperatures of the interior walls 84 and the floor 85 would decrease in accordance with the decrease in the temperature of the ceiling 77.

[0076] As mentioned above, in buildings designed for transportation, the small attic space has the disadvantage that the distance between the roof, which becomes hot due to solar radiation, and the ceiling is close, making the ceiling prone to high temperatures. However, in this embodiment, the small attic space is turned into an advantage, and this small attic space is used as an air circulation space S1 where convection is less likely to occur, allowing cool air to circulate while remaining cool.

[0077] The wooden buildings 1 and 1B described above were examples where the attic space was small, and the entire attic space was an air circulation space S1. Even in buildings that are also intended for transportation, depending on the use of the building, the height of the attic space may exceed 20 cm in part or overall. Therefore, the configuration of the second embodiment of wooden building 2, which is adopted in such cases, will be explained using Figure 8.

[0078] The difference between wooden building 2 and wooden building 1 of the first embodiment and wooden building 1B, a modified example thereof, is that the attic space is divided into an air circulation space S1 and the remaining space S2; the other configurations are the same. The same reference numerals are used for identical components, and detailed explanations are omitted.

[0079] In the wooden building 2, the partition section 77B divides the attic space (the space between the ceiling 77 and the roof sheathing 62) into an air circulation space S1 and the remaining space S2. The partition section 77B has a planar configuration parallel to the ceiling 77 and is located on the roof 60 side of the ceiling 77, with a gap of 2 cm to 20 cm between them. The partition section 77B is supported from above by multiple joists 78b, each of which is either directly supported by the beam section 13 or supported by the beam section 13 via hangers or joist supports (not shown). The partition section 77B is supported by the joists 78b so as to bend upward near the ventilation trim 79, and the air circulation space S1 and the ventilation trim 79 are in communication through the gap formed between the partition section 77B and the column 12 and beam section 13. In this configuration, the space between the ceiling 77 and the partition screen section 77B is the air circulation space S1, and the space between the partition screen section 77B and the roof sheathing 62 is the remaining space S2 in the attic.

[0080] With this configuration, even if the height of the attic space exceeds 20 cm, an air circulation space S1 with a height in the range of 2 cm to 20 cm can be provided in the attic space, and the above effects can be obtained. Airtight sheet material or flat plate material can be used for the partition section 77B.

[0081] The wooden structures 1,1B,2 described above are fixed to a concrete foundation 90, making them suitable as long-term residences. However, their compact design, intended for transport, makes them suitable as temporary structures, such as temporary housing during disasters, rest areas near factories for factory workers, or booths for events. Traditionally, so-called prefabricated buildings and container houses have been used as portable temporary structures, but these have the problem of becoming too hot in the summer. In contrast, the wooden structures 1,1B,2 have an air circulation space S1 that allows cool air to circulate while remaining cool. Therefore, even in summer, the temperature of the indoor space can be maintained at a comfortable level by effectively utilizing the effect of the air cooler AC installed in the indoor space.

[0082] Furthermore, it is common to install an air cooler AC in the interior space, and in wooden buildings 1 and 1B, a simple configuration is achieved by further installing a fan F on the ceiling 77 and a ventilation trim 79 at the eaves, thereby suppressing the indoor space from becoming hot due to the roof becoming hot from solar radiant heat. In wooden building 2, a similar effect can be obtained with a simple configuration that further installs a partition screen section 77B in the attic space.

[0083] Furthermore, conventional prefabricated and container houses often use metal for their walls, and because metal has high thermal conductivity, the walls tend to get hot in the summer. In contrast, wooden buildings 1,1B, and 2 use wooden exterior wall panels 83 as the wall material that makes up the exterior wall 80. Since wood has lower thermal conductivity than metal, the temperature of the exterior wall 80 in the summer is suppressed, and the above effect of suppressing the rise in indoor temperature by circulating the air sent from the air cooler F into the air circulation space S1 is further enhanced.

[0084] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various improvements and design changes are possible without departing from the spirit of the present invention, as shown below.

[0085] For example, in the above embodiment, we illustrated a case where wooden buildings 1, 1B, and 2, which are intended for transport, are equipped with a configuration that sends air from a cooler AC to an air circulation space S1 communicating with the outdoor space via a blower F, and circulates the air in the air circulation space S1. Furthermore, the roofs 60 of the wooden buildings 1, 1B, and 2 were single-slope roofs. The embodiments to which the present invention is applied are not limited to these, and the configuration can be applied to buildings with roofs other than single-slope roofs, or to buildings that are not intended for transport.

[0086] For example, as shown in Figure 9, the present invention can be applied to a wooden building 3 of a third embodiment in which the roof 60B is a gable roof and is not intended for transport. In the case of a gable roof, the roof surface gets higher as you approach the ridge, so the height of the attic space exceeds 20 cm. Even so, by providing a partition section 77B as in wooden building 3, the attic space can be divided into an air circulation space S1 with a height of 2 cm to 20 cm and the remaining space S2.

[0087] Furthermore, the configuration to which air from the air cooler AC is sent through the blower F to the air circulation space S1, which is connected to the outdoor space, is applied is not limited to wooden buildings. For example, this configuration can be applied to steel-framed buildings, such as container houses, and steel buildings, such as prefabricated buildings. Even in buildings other than wooden buildings, the above-mentioned effect of suppressing the rise in indoor temperature during the summer can be achieved without any problems by applying this configuration. [Explanation of Symbols]

[0088] 1,1B Wooden building (building) 2 Wooden buildings (buildings) 3 Wooden buildings (buildings) 11. Base 12 pillars 13 Beam section 16 Bottom side 17. Ground-side base 20,20B Lower support section 25 Joining members 30 Lifting section 31 Upper end 40, 50 Lifting attachments 60,60B roof 77 Ceiling 77B Sectional section AC cooling fan F Blower S1 Air circulation space

Claims

1. The attic space is the space between the ceiling and the roof, A fan is installed in the interior space adjacent to the ceiling and blows cool air into the interior space, An air circulation space provided in the aforementioned attic space and communicating with the outdoor space, The system comprises a fan mounted on the ceiling for supplying air from the indoor space to the air circulation space, The height of the aforementioned air circulation space is 2 cm to 20 cm. A building characterized by the following features.

2. A wooden base in the shape of a frame, Multiple wooden pillars erected on the base, A wooden beam section is frame-shaped and is positioned to span between multiple columns at the upper end of the column, Multiple lower support parts that are in contact with the lower surface of the base, It comprises a plurality of lifting parts, each in the shape of a long rod, with their lower ends fixed to the lower support part and penetrating the base and the beam part vertically. The building according to feature 1.

3. The aforementioned attic space is larger than the aforementioned air circulation space. The attic space is provided with a partition section that divides it into the air circulation space and the remaining space. A building according to claim 1 or 2.

4. The system further comprises a lifting attachment that is detachably attached to the upper end of the lifting portion which protrudes upward from the beam portion, and which integrally fixes the upper end and the beam portion. The building according to feature 2.

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