JP2018123557A - Thermal insulation wall structure of building and building with thermal insulation wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal insulation wall structure of a building having high heat shielding effect and thermal insulation effect, and a building with such a thermal insulation wall structure.SOLUTION: A heat shielding sheet is wrapped around various structural members constituting a construction object wall, for example on an outer periphery of a bedding 11 and a pole plate 14, and a heat shielding sheet 31 is attached on both the outside surface and the inside surface of the various structural members constituting the construction object wall. By this, a space surrounded by the bedding 11, the pole plate 14 and the heat shielding sheet 31 becomes a heat shielding sealed air layer 40 to suppress heat convection and conduction. As the heat shielding sheet 31, a plastic base material 311 on which at least one surface is formed with a reflection layer 312 of an electromagnetic wave made of aluminum foil is used.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a heat insulating wall structure of a building and a building including the heat insulating wall structure.

  Recent buildings are required to have a high thermal insulation performance and airtight performance in order to provide a comfortable living space in both summer and winter and to reduce energy consumption required for indoor air conditioning. Heat transfer in buildings is about 75% due to radiation, about 20% due to convection, and about 5% due to conduction. In order to improve the heat insulation performance of buildings, Rather than fitting a heat insulating material such as glass wool in the wall structure, it is more effective to put a heat shield sheet having an electromagnetic wave reflection layer on the wall surface of the building. In order to improve the heat insulation performance of the building, it is also effective to form a sealed air layer (heat-insulating sealed air layer) in the wall structure. Furthermore, in order to improve the heat insulation performance of the building, a ventilation layer is provided between the outer wall material and the inner wall material constituting the wall structure of the building so that indoor warm air and cold air can be quickly released to the outside air. It is also effective to do.

  For this reason, conventionally, a synthetic material including a three-dimensional net material for forming a ventilation layer and bubbles functioning as a heat-shielding sealed air layer between an outer wall material and an inner wall material constituting a wall structure of a building. There has been proposed a heat insulating wall structure in which a resin foam sheet layer and a heat insulating sheet material provided with a metal vapor deposition material layer functioning as an electromagnetic wave reflection layer are attached (see, for example, Patent Document 1).

Japanese Patent No. 5162434

  However, since the conventional technology is a construction in which the heat insulating sheet material is applied with the metal vapor deposition material layer facing either the outdoor side or the indoor side, the heat transfer due to radiation cannot be sufficiently suppressed, and construction is performed. The heat insulation effect of the object is insufficient, and there is room for improvement in this respect.

  In addition, since the conventional technology is configured to allow the bubbles contained in the synthetic resin foam sheet layer to function as a heat-insulating sealed air layer, the thickness of the heat-insulating sealed air layer is insufficient, and heat transfer due to convection and conduction In this respect, it is difficult to exhibit a sufficient heat insulating effect.

  The present invention has been made to solve such problems of the prior art, and has a heat insulating wall structure for a building having a high heat shielding effect and a heat insulating effect, and a building having such a heat insulating wall structure. The purpose is to provide goods.

  In order to solve such a problem of the prior art, one aspect of the present invention is that a heat shield sheet having an electromagnetic wave reflection layer is attached to a construction target wall that is an outer surface constituted by a combination of various structural materials. In the heat insulating wall structure of the building, the heat shielding sheet is pasted on both the outdoor side surface and the indoor side surface of the various structural materials constituting the construction target wall, and the various structures constituting the construction target wall The space surrounded by the material and the heat shield sheet is a heat shield sealed air layer that suppresses heat convection and conduction.

  According to the present invention, since the heat shielding sheet is disposed on both the outdoor side and the indoor side of the structural material constituting the construction target wall that is the outer skin surface, the heat transfer due to the radiation from the outdoor side and the radiation from the indoor side The movement of heat due to can be suppressed. Further, according to the present invention, a large heat-insulating sealed air layer having a width of the structural material constituting the construction target wall can be formed between the outdoor-side heat-shielding sheet and the indoor-side heat-shielding sheet. Heat transfer due to conduction can also be efficiently suppressed. Therefore, it is possible to provide a heat insulating wall structure with a high heat shielding effect by a synergistic effect of the shielding effect of radiant heat by the reflective layer provided in the heat shielding sheet and the shielding effect of convection heat and conduction heat by the heat shielding airtight layer. it can. Problems, configurations, and effects other than those described above will become apparent from the description of the embodiments described below.

It is sectional drawing of the building provided with the heat insulation wall structure which concerns on embodiment. It is sectional drawing which shows the 1st example of the outer side wall which comprises the building which concerns on embodiment. It is sectional drawing which shows the 1st example of the attic wall which comprises the building which concerns on embodiment. It is a figure which illustrates the layer structure of the various heat insulation sheets which concern on embodiment. It is sectional drawing which shows the 2nd example of the outer side wall which comprises the building which concerns on embodiment. It is sectional drawing which shows the 2nd example of the attic wall which comprises the building which concerns on embodiment. It is principal part sectional drawing which shows an example of the winding method around the structural material of the heat shield sheet which concerns on embodiment. It is sectional drawing which shows the 3rd example of the outer side wall which comprises the building which concerns on embodiment. It is sectional drawing which shows the 3rd example of the attic wall which comprises the building which concerns on embodiment. It is sectional drawing which shows the 4th example of the outer side wall which comprises the building which concerns on embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a building having a heat insulating wall structure and a heat insulating wall structure for a building according to the present invention will be described below with reference to the drawings. It should be noted that the scope of the present invention is not limited to the scope of the embodiments described below, and includes, of course, those that are implemented with various design changes without departing from the gist of the present invention. is there.

<Example 1>
As shown in FIG. 1, a building 1 having a heat insulating wall structure according to the first embodiment is a general house composed of a one-story conventional wooden structure with an attic space, and is a root excavated on the ground surface. The crushed stone layer 2 spread on the bottom of the cut (root cutting bottom), the heat shield sheet 3 covering the surface of the crushed stone layer 2, the foundation concrete 4 placed on the heat shield sheet 3, and the outer periphery of the foundation concrete 4 The foundation is comprised with the foundation heat insulation sheet 5 which covers.

  As the heat shield sheet 3, a plastic sheet excellent in moisture resistance and having an electromagnetic wave reflection layer formed on one side or both sides thereof is used. When using the heat shield sheet 3 having an electromagnetic wave reflection layer formed on one side of the plastic sheet, the surface of the crushed stone layer 2 is covered with the heat shield sheet 3 with the reflection layer facing upward. The specific configuration of the heat shield sheet 3 will be described later in detail with reference to FIG. On the other hand, as the basic heat insulating sheet 5, a plastic sheet such as polystyrene foam having excellent heat insulating properties is used. Therefore, in the building 1 of this example, heat loss from under the floor is suppressed, and the indoor energy saving performance of the building 1 is enhanced by enhancing the effect of storing and raising the amount of heat supplied from the air conditioning equipment indoors. In addition, it is possible to suppress moisture from entering from the base portion into the room.

  A plurality of pillars 12 are erected on the upper surface of the rising portion 4 a of the foundation concrete 4 via a base 11. The plurality of pillars 12 are assembled so as to have a required seismic resistance by means of a torso 13, an eaves girder 14 and beams (not shown), purlins, purlins, studs, pipe pillars, braces, and the like. In this specification, these foundation 11, pillar 12, girder 13, eaves girder 14, beams, purlins, purlins, studs, pipe pillars, braces, and the like constituting the framework of the building 1 are collectively referred to. This is called “structural material”.

  A joist 15 for supporting the flooring is attached via a floor bundle 15 a above the bottom plate portion 4 b of the foundation concrete 4, and both ends of the joist 15 are connected to the base 11. A structural plywood 16 is stretched on the upper surface of the joist 15, and a flooring material 17 is stretched on the upper surface of the structural plywood 16.

  Further, a plurality of pedestals 18 for attaching the ceiling plate are provided above the pillars 12, and a ceiling plate 19 is stretched on the pedestal 18. The ceiling plate 19 is provided with a ventilation hole 20 for communicating the first floor portion of the building 1 and the attic space 23, so that the first floor portion of the building 1 and the attic space 23 can be warmed or cooled. It can discharge | release to external air through the ventilation window and / or ventilation fan which are mentioned later.

  In addition, a lattice-like flooring attachment 21 is attached further above the pillar 12, and a structural plywood 16 for constituting the floor surface of the attic space 23 is stretched on the flooring attachment 21. ing. A flooring material 22 is stretched on the structural plywood 16. From the first floor portion of the building 1 to the attic space 23, the stairs 24 can be used.

  The roof of the building 1 according to the embodiment includes a purlin and a main building (not shown) arranged at the uppermost end of the pillar 12, a rafter (not shown) passed to the purlin and the main building, and a field stretched on the upper surface of the rafter. It is composed of a base plate 25 and a roof material 26 sown on the upper surface of the base plate 25.

  Next, the heat insulating wall structure according to the first embodiment will be described.

  As shown in FIGS. 1 and 2, the outer wall 30 </ b> A that is the skin surface of the building 1 according to the first embodiment is provided on the outdoor side surface of the base 11 and the eaves girder 14 and on the indoor side of the base 11 and eaves girder 14. A heat shield sheet 31 attached to the surface, an outer wall material 33 such as fire siding disposed on the outdoor side of the heat shield sheet 31 via a vent layer 32, and a vent layer 34 on the indoor side of the heat shield sheet 31. It has a heat insulating wall structure provided with an inner wall material 35 such as a plaster board. An interior material such as a cloth is stretched on the surface of the inner wall member 35 on the indoor side. In addition, the skin surface of the building 1 refers to a portion of the wall structure that does not include the foundation and the opening.

  A ventilation window 41 for discharging warm-up or cold air in the attic space 23 to the outside is opened on the outer wall of the attic space 23. In the building 1 according to the embodiment, the ventilation fan 42 is installed on the outer wall of the attic space 23. However, it is not always necessary to provide both the ventilation window 41 and the ventilation fan 42 on the outer wall of the attic space 23, and it is sufficient to install either the ventilation window 41 or the ventilation fan 42. The ventilation window 41 can be formed by cutting the heat shield sheet 31 into the shape of the ventilation window 41 and fitting the window frame into the structural material of the cutout portion. The same applies to the ventilation fan 42, and the heat shield sheet 31 can be cut into the shape of the ventilation fan 42 and installed by fitting the ventilation fan 42 into the structural material of the cutout portion.

  If ventilation means such as a ventilation window 41 and a ventilation fan 42 are provided on the outer wall of the attic space 23, warm-up and cold air in the building 1 can be efficiently released to the outside air. Can be increased.

  On the other hand, as shown in FIGS. 1 and 3, the ceiling wall 30 </ b> B, which is another outer surface of the building 1 according to the embodiment, is a surface on the outdoor side of the purlin and the main building and a surface on the indoor side of the purlin and the main building. A heat insulating sheet 31 attached to the heat insulating sheet 31, a field board 25 disposed on the outdoor side of the heat shielding sheet 31 via a ventilation layer 36, and a roof material 26 wound on the upper surface of the field board 25. It has a wall structure. A building ventilation port (not shown) is provided on the purlin side of the ceiling wall 30B, and an eaves ventilation port (not shown) is provided on the eaves side of the ceiling wall 30B.

  Note that the heat shield sheet 31 can be fixed to the structural material using an adhesive tape, a nail, a hook, or the like.

  As the heat shield sheet 31, as shown in FIG. 4A, an electromagnetic wave reflection layer 312 made of aluminum foil is laminated on one side of a base material 311 made of a plastic sheet, or in FIG. As shown, an electromagnetic wave reflection layer 312 made of aluminum foil is laminated on both front and back surfaces of a base material 311 made of a plastic sheet. Since the aluminum foil has a remarkably higher electromagnetic wave reflection efficiency than the aluminum vapor deposition film, the heat shielding effect and energy saving effect of the building 1 can be obtained by using the heat shielding sheet 31 provided with the aluminum foil as the reflective layer 312. It can be further increased.

  The base material 311 can be configured with a single-layer plastic sheet, or can be configured with a laminate of a plurality of plastic sheets. FIG. 4C shows a structure in which an electromagnetic wave reflection layer 312 made of aluminum foil is laminated on both front and back surfaces of a base material 311 made of a laminate of plastic sheets 311a, 311b, and 311c laminated in three layers. . For the two plastic sheets 311a and 311c in contact with the reflective layer 312, a smooth plastic sheet having a smooth surface is used in order to smooth the surface of the reflective layer 312 and increase the reflection efficiency of electromagnetic waves. On the other hand, a foamed plastic sheet is used for the central plastic sheet 311b not in contact with the reflective layer 312 in order to further enhance the heat insulating effect of the heat insulating wall structure. Of course, the number of layers of the plastic sheet constituting the base material 311 is not limited to one or more and three or less, and can be any number of one or more. Which layer structure to select the heat shield sheet 31 can be appropriately determined according to the installation location of the heat shield sheet 31, the heat insulating performance required for the building 1, and the like.

  In the case of using the heat shielding sheet 31 in which the electromagnetic wave reflection layer 312 is laminated on one side of the base material 311, the reflection layer 312 is provided on the outdoor side and the indoor side of the building 1 in order to increase the reflection efficiency of the electromagnetic wave. Attached to a predetermined structural material.

  In addition, also as the heat insulation sheet 3 which covers the surface of the crushed stone layer 2, the heat insulation sheet 31 illustrated to Fig.4 (a)-(c) can be diverted.

  As described above, the heat insulating wall structure of the building 1 according to the first embodiment has the reflective layer 312 facing the outdoor side and the indoor side of the building 1, and the heat shield sheet 31 on the outdoor side surface of the predetermined structural material. Since it was attached to the indoor side surface, electromagnetic waves such as sunlight radiated from the outdoors were reflected by the reflective layer 312 on the outdoor side, and it was possible to suppress the movement of heat from the outdoors to the indoors due to radiation, and it was installed indoors Electromagnetic waves emitted from heating equipment such as halogen lamps are reflected by the reflection layer 312 on the indoor side, and heat transfer from indoors to outdoors due to radiation can be suppressed.

  Further, the heat insulating wall structure of the building 1 according to the first embodiment is such that the reflective layer 312 faces the outdoor side and the indoor side of the building 1, and the heat shield sheet 31 is on the outdoor side surface and the indoor side of the predetermined structural material. 2 and 3, as shown in FIGS. 2 and 3, a large heat-insulating sealed air layer 40 having a width of a structural material to which the heat-insulating sheet 31 is attached is formed. Therefore, this heat-insulating sealed air layer 40 can effectively suppress heat transfer due to convection and conduction, and suppresses heat transfer due to convection and conduction only by bubbles contained in the foamed plastic sheet. Compared to the heat insulating wall structure, the heat shielding effect and energy saving effect of the building 1 can be enhanced.

  Further, in the heat insulating wall structure of the building 1 according to the first embodiment, for the outer wall 30A, a ventilation layer 32 is provided between the outdoor side surface of the heat shield sheet 31 and the outer wall material 33, and the heat shield sheet. Since the ventilation layer 34 is provided between the indoor side surface 31 and the inner wall member 35, as shown in FIG. 2, the cold air and moisture in the ventilation layers 32 and 34 are transferred from the lower side of the outer wall 30A to the outside air in winter. In summer, warm air and moisture in the ventilation layers 32 and 34 can be released from the upper side of the outer wall 30A to the outside air. Further, since the warm air of the first floor portion of the building 1 is guided into the attic space 23 through the ventilation hole 20 opened in the ceiling plate 19, it can be discharged to the outside air through the ventilation window 41 and / or the ventilation fan 42. Therefore, compared with the building which does not have a ventilation layer, outer skin heat loss can be suppressed remarkably, and the heat insulation effect, energy-saving effect, and humidity control effect of the building 1 can be improved.

  In addition, the ceiling wall 30B is also provided with a ventilation layer 36 between the outdoor side surface of the heat shield sheet 31 and the base plate 25. Therefore, as shown in FIG. The warm-up and humidity of the roof part are discharged to the outside, and in the winter, the cooler and moisture of the roof part are discharged to the outside from the eaves vent. Thereby, a high heat insulation effect and a humidity control effect are exhibited.

  In the above description, the outer wall and the ceiling wall of the building 1 have been described as an example. However, other skin surfaces constituting the building 1 can have a heat insulating wall structure similar to the above. Thereby, the whole skin surface which comprises the building 1 can be made into the heat insulation wall structure where the heat-shielding sheet 31 was affixed on the structural material, and it can be set as the building 1 with a high heat-shielding effect.

  In addition, the gist of the present invention is to cover the entire outer skin surface constituting the building 1 with the heat shield sheet 31, and the structural material to which the heat shield sheet 31 is attached is described above. The form is not limited. The structural material around which the heat shield sheet 31 is wound can be appropriately changed according to the structure of the building 1, construction conditions such as whether it is a new construction or a renovation.

<Example 2>
Next, a heat insulating wall structure of the building 1 according to the second embodiment will be described.

  As shown in FIGS. 5 and 6, the heat insulating wall structure that constitutes the outer skin surface of the building 1 according to the second embodiment is the outdoor side surface and the outdoor side surface of the structural material on which the heat shield sheet 31 is installed. It is characterized in that it is wound around three surfaces of the structural material instead of being attached to.

  That is, as shown in FIG. 5, in the outer wall 30 </ b> A according to the second embodiment, the heat shielding sheet 31 is wound around the outer surface of the base 11 and the outer surface (not shown) of the eaves beam 14. As shown in FIG. 6, in the ceiling wall 30 </ b> B according to the second embodiment, a heat shield sheet 31 is wound around a purlin (not shown) and a purlin. Other parts are the same as those of the heat insulating wall structure according to the first embodiment, and the corresponding parts are denoted by the same reference numerals and description thereof is omitted.

  When the thermal insulation sheet 31 is wound around the structural material, as shown in FIG. 7, the three surfaces of the structural material (in the example of FIG. A small area heat shield sheet 31A sufficient to cover both sides) and large area heat shield sheets 31B and 31C sufficient to cover the outdoor and indoor wall surfaces of the wall structure are prepared in advance. After the thermal sheet 31A is wrapped around the three surfaces of the structural material, the lower and upper end portions of the large area heat shield sheets 31B and 31C are bonded to the end portions of the small area heat shield sheet 31A at the side portions of the structural material. A method of fixing using a fixing tool P such as a tape, a nail or a hook can also be adopted.

  In the heat insulating wall structure according to Example 2, since the heat insulating sheet 31 is wound around the three surfaces of the structural material, the entire structural material constituting the heat insulating wall structure can be covered with the heat insulating sheet 31. The heat shielding effect can be further enhanced.

<Example 3>
Next, the heat insulating wall structure of the building 1 according to Example 3 will be described.

  As shown in FIGS. 8 and 9, the heat insulating wall structure constituting the outer skin surface of the building 1 according to the third embodiment is the outdoor side of the heat shield sheet 31 attached to or wound around the structural material and / or The second heat shield sheet 52 is arranged on the indoor side through the air layer 51.

  That is, as shown in FIG. 8, the outer wall 30 </ b> A according to the third embodiment has an air layer on the outdoor side of the heat shield sheet 31 wound around the outer surface of the base 11 and the outer surface (not shown) of the eaves beam 14. A second heat shield sheet 52 is disposed via 51. As shown in FIG. 9, the ceiling wall 30 </ b> B according to the third embodiment has a second heat shield via an air layer 51 on the indoor side of the heat shield sheet 31 wound around the purlin and the purlin (not shown). A sheet 52 is disposed. Other parts are the same as those of the heat insulating wall structure according to the second embodiment, and the corresponding parts are denoted by the same reference numerals and description thereof is omitted.

  In the heat insulating wall structure according to the third embodiment, since the double heat insulating sealed air layer 40 is formed on the wall structure, the heat insulating effect of the building 1 can be further enhanced.

<Example 4>
Next, the heat insulating wall structure of the building 1 according to Example 4 will be described.

  As shown in FIG. 10, the heat insulating wall structure constituting the outer skin surface of the building 1 according to Example 4 was attached to or wrapped around the base 11, the eaves girder 14, and these structural materials constituting the outer wall. Other predetermined structural members 61 and other plural thermal barrier sheets 31 attached to or wrapped around the predetermined structural members 61 on the outdoor side of the heat insulating wall structure including the heat insulating sheets 31 (example of FIG. 10) Then, four rows of heat insulating wall structures are arranged in parallel with each other between adjacent heat insulating wall structures with a ventilation layer 62 interposed therebetween.

  Since the heat insulating wall structure according to the fourth embodiment has a structure in which a plurality of heat insulating wall structures are stacked, the heat shielding effect of the building 1 can be further enhanced.

  In addition, in the above-mentioned embodiment, although it demonstrated taking the case of the general house which consists of a 1-story conventional wooden structure frame which has the attic space 23, the summary of this invention is not limited to this, Other The present invention can be applied to all buildings used by people such as general houses, general buildings, condominiums, schools, hospitals, public halls, companies, factories, and station buildings having a skeleton structure.

  Moreover, of course, it is also possible to build one building by combining the heat insulation wall structure which concerns on Examples 1-4 mentioned above suitably.

  DESCRIPTION OF SYMBOLS 1 ... Building, 2 ... Crushed stone layer, 3 ... Heat insulation sheet, 4 ... Foundation concrete, 5 ... Foundation heat insulation sheet, 11 ... Base, 12 ... Pillar, 13 ... Trunk, 14 ... Eaves girder, 15 ... joist, 16 ... structural plywood, 17 ... flooring material, 18 ... pier, 19 ... ceiling board, 20 ... ventilation hole, 21 ... flooring material, 22 ... flooring material, 23 ... attic space, 24 ... stairs, 25 ... field board, 26 ... Roof material, 30A ... Outer wall, 30B ... Ceiling wall, 31 ... Heat shield sheet, 31A ... Small area heat shield sheet, 31B, 31C ... Large area heat shield sheet, 311 (311a, 311b, 311c) ... Base material, 312 ... Reflective layer, 32 ... Vent layer, 33 ... Outer wall material, 34 ... Vent layer, 35 ... Inner wall material, 36 ... Vent layer, 40 ... Thermal insulation sealed air layer, 41 ... Ventilation window, 42 ... Ventilation fan, 51 ... Air layer, 52 ... Second heat shield sheet, 61 Other structural materials, 62 ... ventilation layer.

In order to solve such a problem of the prior art, one aspect of the present invention is that a heat shield sheet having an electromagnetic wave reflection layer is attached to a construction target wall that is an outer surface constituted by a combination of various structural materials. In the heat insulating wall structure of the building, the thermal insulation sheet is wound around two structural materials arranged on the outermost side of the construction target wall among the various structural materials constituting the construction target wall. covers the surface and the surface of the interior side of the outdoor side between two structural members arranged on the outside in the heat shielding sheet, a space surrounded by the heat insulating sheet, heat insulating closed air suppress convection and conduction of heat It is characterized as a layer.

In order to solve such a problem of the prior art, one aspect of the present invention is that a heat shield sheet having an electromagnetic wave reflection layer is attached to a construction target wall that is an outer surface constituted by a combination of various structural materials. In the heat insulating wall structure of the building to be constructed, among the various structural materials constituting the construction target wall, the outer wall is wrapped around the base and eaves girder or the base and the trunk, and the ceiling wall is wrapped around The heat shield sheet is wrapped around the purlin and the main building, and the three sides excluding the surface where the base and the eaves girder on which the heat shield sheet is wound and the outdoor side between the base and the eaves girder The entire surface and the indoor side surface, or three surfaces excluding the surface where the base and the torso face each other, and the entire outdoor side surface and the indoor side surface between the base and the torso, and The purlin and the purlin Three sides and the entire surface of the surface and the interior side of the outdoor side in between the main building and the purlin covered with the heat insulating sheet, a space surrounded by the heat insulating sheet, heat convection except the surface on which the facing And a heat-shielding sealed air layer that suppresses conduction.

Claims (8)

In the heat insulating wall structure of the building formed by pasting a heat shielding sheet having an electromagnetic wave reflection layer on the construction target wall that is an outer surface composed of a combination of various structural materials,
The heat shielding sheet is attached to both the outdoor side surface and the indoor side surface of various structural materials constituting the construction target wall, and is surrounded by the various structural materials constituting the construction target wall and the heat shielding sheet. A heat insulating wall structure for a building, characterized in that the space to be formed is a heat-shielding sealed air layer that suppresses heat convection and conduction.   The heat shield sheet is wrapped around the outermost periphery of various structural materials constituting the construction target wall, and the shielding is applied to both the outdoor side surface and the indoor side surface of the various structural materials constituting the construction target wall. The heat insulating wall structure for a building according to claim 1, wherein a heat sheet is attached.   A ventilation layer is formed between the outer wall material constituting the construction target wall and the heat shield sheet, and between the inner wall material constituting the construction target wall and the heat shield sheet. The heat insulation wall structure of the building of Claim 1 or Claim 2.   The building according to claim 3, wherein a plurality of the heat-shielding sealed air layers are arranged in parallel between the outer wall material and the inner wall material constituting the construction target wall, respectively through a ventilation layer. Insulated wall structure of things.   The building according to any one of claims 1 to 4, wherein the heat shielding sheet is obtained by laminating an aluminum foil as the reflective layer on at least one surface of a plastic base material. Insulated wall structure.   The plastic base material constituting the heat shield sheet includes a foamed plastic sheet for enhancing the heat insulation performance of the construction target wall and a smooth plastic sheet for enhancing the smoothness of the aluminum foil as the reflective layer. It consists of a laminated body, The heat insulation wall structure of the building of Claim 5 characterized by the above-mentioned. In a building with a heat insulating wall structure in which a heat shielding sheet having an electromagnetic wave reflection layer is attached to a construction target wall that is an outer surface constituted by a combination of various structural materials,
The heat insulating wall structure is formed by attaching the heat shield sheet to both the outdoor side surface and the indoor side surface of various structural materials constituting the construction target wall, and the various structural materials constituting the construction target wall and the above A building provided with a heat insulating wall structure, characterized in that a space surrounded by the heat shielding sheet is a heat shielded air layer that suppresses convection and conduction of heat.   Ventilation between the outer wall material constituting the construction target wall and the reflective layer constituting the heat shield sheet, and between the inner wall material constituting the construction target wall and the reflective layer constituting the heat shield sheet. The building having a heat insulating wall structure according to claim 7, further comprising an exhaust unit that forms a layer and forcibly exhausts the air in the ventilation layer to the outside of the building.