JP2007239302A - Method and equipment for ventilation in wall body of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and equipment for ventilation in a wall body of a building, which enable the ventilation in the wall body of an exterior wall, in even the building such that an opening is provided almost throughout the exterior wall. <P>SOLUTION: In this building where an airway communicating with outside air in an attic is formed in the exterior wall, a first horizontal member 16 is laid on the exterior wall 15; a plurality of vertical members 2 are provided on first horizontal member at predetermined intervals in the lengthwise direction of the horizontal member; an opening, which is provided in a space between the vertical members, is formed almost throughout a surface where the vertical members are provided; a second horizontal member 17 is laid on the vertical members; the first horizontal member, the vertical members, and the second horizontal member are provided with a ventilation means which communicates with the airway; and the air passing through the airway is guided to the attic via the ventilation means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall ventilation method and apparatus for ventilating a wall in order to prevent dew condensation inside the wall on the outer wall of a building such as a wooden detached house.

  Conventionally, in order to improve the heat insulation of a building, it has been performed to insert a heat insulating material on the outer wall of the building. However, heat insulation does not allow heat to pass through, but moisture passes through.Therefore, moisture generated inside the room penetrates into the wall, and if the outside temperature is low and the temperature difference between the outside and the room is large, such as in winter, it contains a lot of moisture. However, when the air cools as it approaches the outside air and falls below the dew point temperature, a phenomenon occurs in which condensation occurs inside the wall. Especially in buildings such as wooden detached houses, it has a serious adverse effect on the durability of the building, such as corroding structural materials such as joists and foundations. Condensation inside the wall of the wall was a problem.

  Therefore, in order to solve such problems, the applicant of the present application forms a ventilation path communicating with the outside air under the floor on the outer wall of the lower floor, and forms a ventilation path communicating with the outside air of the attic on the outer wall of the upper floor. In addition, a vent hole communicating with either one of the two air passages is provided vertically through the horizontal member, and a vent groove communicating with the vent hole and the air passage is provided at least on the upper surface or the lower surface of the horizontal member. By forming one of them and securing a continuous air passage from the underfloor to the attic on the outer wall, it is possible to release the moisture-rich air in the building wall to the outside air in the attic and ventilate the wall A wall ventilation device for buildings was proposed (see Patent Document 1).

  On the other hand, in a building, even if the window of the same area is higher, the horizontal projection area is larger and more advantageous for lighting, and there is a request to make effective use of the space, or if you realize a large space by raising the ceiling height even a little For that reason, an opening is provided over almost the entire outer wall (full width) of one side of the building, and the opening is used for lighting, ventilation, ventilation, etc. .

  However, in the building wall ventilation device of Patent Document 1, as described above, a continuous air passage is formed in the outer wall from the floor to the attic, and the air in the wall is ventilated toward the back of the ceiling to ventilate the wall. It is carried out. For this reason, in a building in which an opening is provided over almost the entire outer wall, the air passage from the wall of the outer wall to the attic is blocked by the opening and the horizontal member on the wall. There was a problem that the body could not be ventilated.

JP 7-259204 A

  Therefore, the present invention solves the problems of the conventional one, and even in a building in which an opening is provided over almost the entire outer wall, the inside of the wall of the building can be ventilated. It is an object to provide a method and apparatus.

  In order to solve the above-mentioned problems, the wall ventilation method according to the first aspect of the present invention provides a first horizontal installation on the outer wall in a building in which an air passage communicating with the outside air of the attic is formed on the outer wall. A plurality of vertical members are provided on the first horizontal member at predetermined intervals in the length direction of the horizontal member, and the vertical members are used as openings in the vertical direction. And forming a second horizontal member on the longitudinal member, and passing the air passage to the first horizontal member, the vertical member, and the second horizontal member. Ventilating means communicating is provided, and ventilation in the ventilation path is guided to the attic through the ventilation means.

  According to a second aspect of the present invention, in the wall ventilation apparatus according to the second aspect of the present invention, in a building in which a ventilation path communicating with the outside air of the attic is formed on the outer wall, a first horizontal member is bridged on the outer wall. A plurality of vertical members are provided on one horizontal member at a predetermined interval in the length direction of the horizontal member, and the intervals between the vertical members serve as openings and are substantially on the surface of the vertical member. The second horizontal member is stretched over the longitudinal member, and is communicated with the air passage through the first horizontal member, the vertical member, and the second horizontal member. Ventilation means for guiding ventilation in the ventilation path to the attic is provided.

  According to a third aspect of the present invention, in the wall ventilator according to the second aspect of the present invention, in the second aspect of the present invention, the ventilation means includes a ventilation groove formed in communication with the ventilation path on the lower surface of the first horizontal member, A through hole formed through the first horizontal member in communication with the concave groove, a vent groove formed in the upper surface of the first horizontal member in communication with the through hole, and the concave A vent hole formed in the longitudinal direction of the longitudinal member in communication with the groove, a vent groove formed in the lower surface of the second horizontal member in communication with the vent hole, and in communication with the groove And a through hole formed through the second horizontal member.

  According to a fourth aspect of the present invention, in the wall ventilator according to the second or third aspect of the present invention, the longitudinal member is a bundle whose longitudinal direction is the vertical direction.

  According to a fifth aspect of the present invention, in the wall ventilator according to the second or third aspect of the invention, the longitudinal member is a hollow pipe member whose longitudinal direction is the lengthwise direction.

  The bundle according to the invention described in claim 6 is a bundle used in the building wall ventilator according to claim 4, wherein the groove is formed in the length direction of the side surface of the groove, It has the ventilation hole comprised from the cover which covers the opening side, It is characterized by the above-mentioned.

  According to a seventh aspect of the present invention, the bundle according to the sixth aspect of the present invention is characterized in that, in the sixth aspect, the air vent has a substantially rectangular cross section and is formed in at least one protruding corner.

  This invention is as described above, and the invention according to claim 1 guides the ventilation in the ventilation path formed on the outer wall to the attic through the ventilation means, so that an opening is provided over almost the entire outer wall. Even in buildings like the ones mentioned, the walls can be ventilated. For this reason, the durability of such a building can be improved. In addition, since the invention according to claim 2 is configured as described above, the inside of the wall of the outer wall can be ventilated even in a building in which an opening is provided over almost the entire outer wall. At the same time, it is possible to provide an inexpensive wall ventilation device that is waterproof and has no problem and is not complicated in structure. For this reason, the durability of the building as described above can be improved.

  An embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1A is a front view of a girder surface showing a wooden two-story building as an example of a building, and FIG. 1B is a side view of a wife surface of the building. FIG. 2 is a schematic front view showing the main part of a typical building. In the figure, reference numeral 1 denotes a building. The building 1 includes a foundation 11 made of reinforcing steel bars and concrete, a base 12 installed on the foundation 11, and a pillar built on the foundation 12. An outer wall 13 on the first floor, a torso 14 that is a horizontal member spanned on the outer wall 13, and an outer wall 15 on the second floor that includes a pillar and the like built on the torso 14. , And a girder 16 which is a main structural material spanned on the outer wall 15. Further, in this building 1, a plurality of longitudinal members, aerating bundles 2, 2,... Are installed at predetermined intervals in the longitudinal direction of the girder 16 on the girder 16 that is the first horizontal member. The eaves girder 17 as the second horizontal member is bridged on the upper ends of the ventilation bundles 2, 2,..., And an opening 18 is provided over almost the entire surface between the girder 16 and the eaves girder 17. ing. In other words, almost all of the gaps between the beam 16, the eaves beam 17, and the gaps between the airflow bundles 2, 2,... Are the opening 18, and the opening 18 is provided with a daylighting window 18a. A roof 19 is formed on the eaves girder 17, and an attic space 3 extends inside the roof 19 and on the ceiling.

  As shown in FIG. 2, through holes 120 and 140 of the same diameter penetrating up and down at predetermined intervals in the length direction are respectively provided in the horizontal members of the base 12, the trunk 14, the girder 16 and the eaves girder 17. , 160, and 170, and the upper and lower surfaces of the horizontal members have ventilation grooves (described later in detail in the length direction over the entire length of the horizontal members) (FIGS. 3, 5, and 6). Reference) is formed. In the embodiment, the predetermined interval in which the through holes are provided is about 500 mm. The through holes 120, 140, 160, and 170 are formed as small as possible so as not to cause a decrease in strength of the horizontal member provided with the through holes. In this embodiment, bolt holes that do not cause a problem in strength are provided. It is formed in a hole having a diameter of about 18 mm or less.

  In this way, if the through holes 120, 140, 160, and 170 that are opened in the horizontal members of the base 12, the girder 14, the girder 16, and the eaves girder 17 are made common, the same machine, the same drill, etc. Therefore, the machining time can be reduced and the machining cost can be reduced. In addition, if the cross-sections of these horizontal members can be made the same in design, different horizontal members can be diverted, so the generation of half-finished materials can be reduced when processing and attaching members. Waste is reduced and even better.

  A notch (not shown) is formed in the upper end surface of the foundation 11 facing the through hole 120 of the base 12. Therefore, the through hole 120 of the base 12 communicates with the underfloor space 4. Further, this notch may be provided so that the through-hole 120 communicates with the outside air outside the foundation 11. However, if the notch is provided so that the through-hole 120 communicates with the underfloor space 4, rainwater or the like does not directly enter the notch, which is preferable for waterproofing. The foundation 11 is provided with a ventilation packing (not shown) on the underfloor ventilation port 11a or the foundation 11 that penetrates the side surface thereof and communicates the outside air with the underfloor space 4.

  As shown in FIG. 3, the outer wall 15 on the second floor includes a through column 15 a, an intermediate column 15 b, and a panel member 15 c in which both sides of a wooden frame 150 assembled in a rectangular shape from a bar material such as a pier are closed with a plate material 151. Have. The panel member 15c is provided with a reinforcing material 152 as required for strength, such as when the entire panel is elongated. And in order to improve the heat insulation of the building 1, the heat insulating material D (refer FIG.5, 6) is inserted in the space enclosed by this wooden frame 150 and the reinforcing material 152. FIG. Further, the wooden frame 150 and the reinforcing material 152 are formed with notches 150a at appropriate positions so as to ventilate the inside of the outer wall 15. For this reason, the air in the wall of the outer wall 15 can be circulated as shown by the arrows in the figure. As described above, the outer wall 15 on the second floor has been described, but the outer wall 13 on the first floor has the same configuration.

  As shown in FIGS. 3 to 6, a girder 16 is bridged on the outer wall 15, and a plurality of ventilation bundles 2 are provided on the girder 16 at predetermined intervals in the length direction of the girder 16. The intervals between the bundles 2 are formed as openings 18 over almost the entire surface of the building 1 where the ventilation bundle 2 is located. An eaves girder 17 is bridged over the ventilation bundle 2, and the girder 16, the ventilation bundle 2, and the eaves girder 17 communicate with the ventilation path 5 formed in the outer wall 15 to ventilate the ventilation path 5. A post-ventilating means for guiding to the attic space 3 is provided.

  As described above, the outer wall 15 contains the heat insulating material D made of glass wool or the like inside the wooden frame 150 and the inner and outer plate-shaped materials 151 and 151, and the heat insulating material D and the outer plate-shaped material 151. In between, the ventilation path 5 for ventilating the moist air in the wall of the outer wall 15 is formed. This ventilation path 5 is provided above the outer wall 15 by a notch 150a provided in the wooden frame 150 of the panel 15c, a ventilation path 153 provided in the through pillar 15a, or a ventilation path 154 provided in the intermediate pillar 15b. The vent groove 161 communicates with the through hole 160 or the through hole 160. Further, a plate-like material 151 of the outer wall 15 is attached to the inner side surface of the girder 16 by extension, and a lower frame 163 to be an opening frame of the opening 18 is attached to the upper end surface of the girder 16. .

  A plurality of rectangular ventilation bundles 2 having a vertical direction in the longitudinal direction are erected on the upper end surface of the beam 16 at a predetermined interval in the length direction of the beam 16. The ventilation bundle 2 is formed with ventilation holes 21 and 21 at the two outer corners of the outside, and the ventilation hole 21 and the ventilation path 5 include a through-hole 160 of the girder 16, a ventilation groove 161, and It communicates with the vent groove 162. The vent hole 21 is composed of a vent groove 22 formed in the longitudinal direction across the upper end of the main body 20 of the vent bundle 2 and a corner cover 23 covering the vent groove. It is attached to the main body 20 with nails, screws or the like. Further, the ventilation groove 22 may be formed in a U-shaped cross section like the ventilation groove 22 ′ provided at the protruding corner of the ventilation bundle 2 ′ shown at the right end of FIG. 4. The cross-sectional area of the vent hole 21 is determined by the range of the outer walls 13 and 15 that must be ventilated by the vent path 5 communicating with the vent hole 21. In this way, the time for ventilating the air in the walls of the outer walls 13 and 15, that is, the amount of air to be ventilated per hour is constant, so that the outer walls 13 and 15 can be ventilated evenly. .

  As described above, the eaves girder 17 is bridged over the upper end of the ventilation bundle 2 and is supported by the ventilation bundle 2. As described above, the eaves girder 17 is provided with the through-hole 170 and the ventilation grooves 171 and 172, and the ceiling C is fixed via the adjusting member 173 and the like. A roof 19 is formed on the eaves girder 17, and a space surrounded by the inside of the roof 19 and the ceiling C is the attic space 3.

  A vent groove 161 formed on the lower surface of the spar 16 in communication with the vent channel 5, a through hole 160 formed in communication with the vent groove 161 and penetrating the spar 16, A vent groove 162 formed on the upper surface of the girder 16 in communication, a vent hole 21 formed in the length direction of the vent bundle 2 in communication with the vent groove 162, and an eaves girder in communication with the vent hole 21. 17 is formed on the lower surface of the eaves girder 17, the through hole 170 formed through the eaves girder 17 through the eaves groove 17, and the upper surface of the eaves girder 17 through the through hole 170. The ventilation concave groove 172 constitutes a ventilation means. This ventilation means is an example, and when the notch 150a, the through-hole 160, the ventilation hole 21, and the through-hole 170 are arranged in a straight line with each other, the ventilation concave grooves 161, 162 therebetween are provided. 171 and 172 may be omitted. Further, since the vent groove 172 is provided for sharing the horizontal member as described above, it may be omitted.

  A lighting window 18a is provided on the outside of the opening 18, and a sash 180 is provided in the lighting window 18a. The sash 180 is made of an aluminum C-type channel material or the like in which a pair of glass is fitted, and is between a base material 181 attached to the outside of the girder 16 and a base material 182 attached to the outside of the eaves girder 17. It is attached via a draining frame 183 made of a galvanium steel plate. Further, the upper surface of the base material 181 is set lower than the upper surface of the girder 16 corresponding to the lower end of the opening 18 in consideration of the waterproof surface and the drainage surface, and the drain hole provided in the sash 180 even when rainwater or the like enters. It can be drained through (not shown). An eaves T is provided at the lower part of the roof 19 and outside the daylighting window 18a, and an exterior material 15d such as a siding of the outer wall 15 is provided extending to the lower surface of the base material 181. 4 to 6 are not shown in the drawings because they have a well-known configuration. However, waterproof treatment such as attaching a waterproof sheet, sealing, attaching a decorative material, finishing such as applying a cloth, etc. are of course appropriately performed. ing.

  As shown by the arrows in FIG. 7, the moist air in the wall of the outer wall 15 flows into the ventilation holes 21 (see FIG. 6) of the ventilation bundle 2, the ventilation grooves 171 and the through holes 170 (see FIG. 6) of the eaves girder 17. And then reaches the attic space 3 and is discharged to the outside air from a ventilation opening 19a provided in the ridge of the roof 19 like a rooftop or a ventilation opening 19b provided under the eaves. As shown in FIG. 8A, the ventilation port 19a may be a ventilation port 19c provided on the end face of the building 1, and the ventilation port 19b under the eaves may not be provided in consideration of the spread of fire. Also good. Further, as shown in FIG. 8B, the ceiling C may be a sloped ceiling. By doing so, the space in the attic can be used effectively.

  Next, the ventilation bundle will be described in detail. As shown in FIG. 9A, the air flow bundle 2 includes at least a main body 20 which is a substantially rectangular bundle having a length direction in the vertical direction and made of wood containing laminated wood, and on the outer side of the main body 20. It is composed of two ventilation grooves 22, 22 formed over the entire length of the main body 20 along the two protruding corners of the side surface, and a corner cover 23 made of an aluminum angle member covering the ventilation groove 22. ing. As described above, the space surrounded by the ventilation groove 22 and the corner cover 23 is the ventilation hole 21 (see FIG. 4). Further, as shown in FIG. 9B, two corner covers 23, 23 attached to one ventilation bundle 2 may be connected to form a corner cover 23 '. By doing so, it is possible to save labor in attaching the corner cover.

  2A shown in FIG. 10 (A) is a modification of the ventilation bundle, and has a main body 20a which is a rectangular bundle made of wood containing laminated timber and whose longitudinal direction is the length direction, and the outside of the main body 20a. A vent 21a is formed in the length direction near the side surface on the side. For this reason, a corner cover becomes unnecessary and material costs and installation costs can be reduced. Further, as shown in FIG. 10B, two ventilation holes 21b and 21b having a smaller diameter than the ventilation hole 21a may be provided separately in one ventilation bundle 2b. By doing so, the strength fall by opening the hole of the ventilation bundle 2b which is a structural material can be reduced.

The ventilation bundles 2c and 2d according to the modification shown in FIGS. 10C and 10D have main bodies 20c and 20d made of a metal hollow pipe member, and the hollow shapes of the main bodies 20c and 20d are the same. Vent holes 21c and 21d are formed in the space. In the form shown in (C), the ventilation bundle 2c is made of a round pipe, and in the form shown in (d), the ventilation bundle 2d is made of a square pipe.
The ventilation bundle 2e according to the modified example shown in FIG. 10E includes a main body 20e which is a rectangular bundle made of wood containing laminated timber and whose longitudinal direction is the length direction, and along the left and right side surfaces of the main body 20e. Plate-like decorative materials 23e, 23e attached to the left and right sides of the main body 20e, and recessed grooves 22e, 22e are formed over the entire length toward the outside, A groove 24e is formed on the side surface at a position facing the groove 22e. A space surrounded by the concave groove 22e and the concave groove 24e is a vent hole 21e. 9 and 10, the left-right direction refers to a direction orthogonal to the inner and outer directions as shown.

  If the building 1 is configured as described above, even in a building in which an opening is provided over almost the entire outer wall where it is usually difficult to form an air passage, the underfloor space 4 communicating with the outside air, the outer wall 13, The ventilation path 5 in 15 can be communicated, and the ventilation path 5 and the attic space 3 can be communicated by the ventilation means. That is, it is possible to form a continuous air passage from the under floor to the attic in the building 1 in which the opening is provided over almost the entire outer wall. For this reason, the moist air in the wall of the building 1 gradually warms up and rises with the heat of the room, etc., and is released from the attic space 3 to the outside air. One wall can be ventilated. However, it is of course possible to provide mechanical ventilation by providing a ventilation fan or the like in the roof ridge or under the floor.

  In the above-described embodiment, the shape, structure, etc. of the members shown in the drawings are merely preferable examples, and design changes / corrections can be arbitrarily made within the scope described in the claims. It is something that can be done. In addition, although a two-story wooden building has been described as a building, it can be applied to other buildings such as a one-story building, a three-story or higher building, an ALC structure, and an S structure. .

  Next, the specific effects of the invention described in the dependent claims will be described. According to a third aspect of the present invention, in the second aspect, the ventilation means includes a ventilation groove formed on the lower surface of the first horizontal member so as to communicate with the ventilation channel, and the ventilation groove communicates with the groove. A through hole formed through the first horizontal member, a vent groove formed in the upper surface of the first horizontal member in communication with the through hole, and a vertical hole in communication with the groove. A ventilation hole formed in the longitudinal direction of the directional member, a ventilation groove formed in the lower surface of the second horizontal member in communication with the ventilation hole, and a second horizontal bridge in communication with the groove. A through hole formed through the material, so that the vent hole is provided regardless of the position of the through hole provided in the second horizontal member and the vent hole provided in the longitudinal member. The air that has passed through the wall body can be guided to the through hole by the vent groove and vented to the attic. For this reason, the freedom degree of the layout of opening parts, such as a lighting window provided between the 1st horizontal member and the 2nd horizontal member, increases.

  According to invention of Claim 4, in Claim 2 or 3, since a vertical direction member is a bundle which makes an up-down direction the length direction, it comprises a vertical direction member only from the bundle which is a structural material. Is possible. Therefore, if the longitudinal member is composed only of bundles, the inside of the wall can be ventilated and other members are not required, so that the number of parts of the apparatus and the labor required for preparation can be reduced. For this reason, the production cost of the whole apparatus can be reduced.

  According to the invention of claim 5, in claim 2 or 3, the longitudinal member is a hollow pipe member having a longitudinal direction in the vertical direction, and is lighter than that made from wood or the like. And it can be made durable.

  According to the invention described in claim 6, since the vent hole is configured by the concave groove formed in the length direction of the side surface of the bundle and the cover that covers the opening side of the concave groove, A groove can be formed with a tool such as a circular saw, and can be formed more easily than using a long drill pit to make a vent hole.

  According to the seventh aspect of the present invention, since the vent hole has a substantially rectangular cross section and is formed in at least one protruding corner portion, the groove can be formed so as to drop the protruding corner portion. There is no need to work such as sucking the bottom, thus saving labor.

(A) is a front view of the girder surface showing the building which concerns on one embodiment of this invention, (B) is a side view of the wife surface same as the above. It is a schematic front view showing the principal part of the schematic building same as the above. It is the B section enlarged view of FIG. 2 which mainly shows the outline of a structure of an outer wall. It is a principal part cross-sectional view in alignment with the AA of FIG. It is a principal part longitudinal cross-sectional view which follows the XX line of FIG. It is a principal part longitudinal cross-sectional view which follows the YY line of FIG. It is effect | action explanatory drawing which shows the flow of ventilation | gas flow from an attic to outside air. (A), (B) is an operation explanatory view corresponding to Drawing 7 showing the modification of a building, respectively. (A), (B) is an exploded perspective view which shows a ventilation bundle, respectively. (A)-(E) is a perspective view which shows the modification of a ventilation bundle, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 13, 15 Outer wall 16 Girder 160 Through hole 17 Eaves girder 170 Through hole 2 Vent bundle 21 Vent hole 3 Attic space 4 Under floor space 5 Ventilation path

Claims (7)

  In a building in which an air passage communicating with the outside air of the attic is formed on the outer wall, a first horizontal member is bridged on the outer wall, and a vertical member is placed on the first horizontal member. A plurality of longitudinal members are provided at predetermined intervals in the longitudinal direction, and the longitudinal members are formed as openings over substantially the entire surface of the longitudinal member, and a second horizontal mount is provided on the longitudinal member. The material is bridged, the first horizontal member, the longitudinal member and the second horizontal member are provided with ventilation means communicating with the ventilation path, and the ventilation in the ventilation path is guided to the attic through the ventilation means. Ventilation method for building walls.   In a building in which an air passage communicating with the outside air of the attic is formed on the outer wall, a first horizontal member is bridged on the outer wall, and a vertical member is placed on the first horizontal member. A plurality of longitudinal members are provided at predetermined intervals in the longitudinal direction of the longitudinal direction, and the intervals between the longitudinal members are formed as openings over substantially the entire surface of the longitudinal member. Two horizontal members are bridged, and the first horizontal member, the longitudinal member, and the second horizontal member are provided with ventilation means that communicates with the ventilation path and guides ventilation in the ventilation path to the attic. Ventilation device for building walls.   3. The building wall ventilation device according to claim 2, wherein the ventilation means includes a ventilation groove formed on the lower surface of the first horizontal member in communication with the ventilation channel, and a ventilation groove formed in communication with the groove. A through hole formed through one horizontal member, a vent groove formed in the upper surface of the first horizontal member in communication with the through hole, and a longitudinal member in communication with the groove A vent hole formed in the longitudinal direction of the gas, a vent groove formed in the lower surface of the second horizontal member in communication with the vent hole, and a second horizontal member in communication with the groove. A building wall ventilation apparatus having a through-hole formed therethrough.   4. The building wall ventilation apparatus according to claim 2, wherein the longitudinal member is a bundle whose length direction is the vertical direction.   4. The building wall ventilation apparatus according to claim 2, wherein the longitudinal member is a hollow pipe member having a length direction in a vertical direction.   It is a bundle used for the wall ventilation apparatus of the building of Claim 4, Comprising: The ventilation hole comprised from the concave groove formed in the length direction of the side surface, and the cover which covers the opening side of this concave groove A bundle characterized by having.   The bundle according to claim 6, wherein the air hole has a substantially rectangular cross section and is formed in at least one protruding corner.

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