JP2017066753A - Ventilation unit for curtain wall and curtain wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation unit for a curtain wall in which sufficient ventilation capacity can be secured even when a room temperature of an indoor space partitioned by the curtain wall rises, and provide the curtain wall equipped with the ventilation unit.SOLUTION: A curtain wall 11 is configured such that a cover member 64 of a storing box 38 serving as a ceiling member forming the ceiling of a living space 12b opposing to a multilayer panel 28 is connected to an indoor side surface of an intermediate crosspiece 14e serving as a crosspiece of an upper side of a vision part 11b, and a headbox 36a for supporting an upper end of a blind 36 being shielding means disposed in the indoor side from the multiple layer panel 28 is attached to the cover member 64. Then, a ventilation unit 10 is configured such that a communication hole 46 for making air communicate in a circulating manner in the indoor side and outdoor side of the curtain wall 11 is provided in the intermediate crosspiece 14e, and a vent 46a on the indoor side of the communication hole 46 is brought into communication with a position serving as the outdoor side of the headbox 36a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a curtain wall ventilation unit constituting an outer wall of a building and a curtain wall equipped with the ventilation unit.

  2. Description of the Related Art Conventionally, a configuration in which a ventilation unit that circulates air inside and outside of a room is attached to a curtain wall that forms the outer wall of a building. For example, in the patent document 1, the present applicant connects a ventilation unit to an indoor side surface of a communication hole provided in a cross member constituting a curtain wall, and connects the ventilation unit to a ceiling of a living space via a duct extending to the back of the ceiling. A configuration with an opening is proposed.

JP2015-71919A

  By the way, shielding means such as a blind may be provided on the indoor side of a panel body such as a glass plate constituting the curtain wall. When the panel body is shielded by such shielding means, the temperature of the space sandwiched between the indoor side of the panel body and the outdoor side of the shielding means may greatly increase due to the influence of solar radiation. Of course, for example, even in a state where a blind as a shielding means is rolled up, the room temperature in the vicinity of the panel body may be greatly increased as compared with the back side of the living space depending on the condition of solar radiation.

  In this way, when the room temperature at the window rises, an updraft along the panel body and the shielding means is generated. However, in the configuration of Patent Document 1, since the duct extending from the ventilation unit is opened in the ceiling of the living space, it may be difficult to smoothly discharge the hot air generated at the window to the outside. In particular, when the panel body is shielded by the shielding means, there is a possibility that the shielding means itself becomes a barrier and hot air stays at the window.

  The present invention has been made in consideration of the above-mentioned problems of the prior art, and is a curtain wall ventilation unit capable of ensuring sufficient ventilation capacity even when the room temperature of the indoor space partitioned by the curtain wall rises. Another object is to provide a curtain wall equipped with the ventilation unit.

  A ventilation unit for a curtain wall according to the present invention is a ventilation unit for a curtain wall in which a panel body is provided between upper and lower horizontal members and left and right vertical members. A ceiling member that forms a ceiling of a space facing the panel body is connected, and a support portion that supports an upper end portion of shielding means disposed on the indoor side from the panel body is attached to the ceiling member, The upper cross member is provided with a communication hole through which air can flow in and out of the curtain wall, and the air vent on the indoor side of the communication hole is communicated with a position on the outside of the support portion. It is characterized by that.

  According to such a configuration, even if the room temperature at the window of the curtain wall rises due to the influence of solar radiation and the like, and the rising air flow along the panel body and the shielding means is generated, the hot air due to the rising air flow is shielded. The air is smoothly exhausted from the communication port communicating with the position on the outdoor side of the support portion of the means to the outdoor side of the curtain wall. Thereby, even when the room temperature of the indoor space partitioned by the curtain wall rises, sufficient ventilation capacity can be ensured. Moreover, since the vent hole of the communication hole communicates with the position on the outdoor side of the support portion that supports the upper end of the shielding means, even if the indoor side of the panel body is completely shielded by the shielding means, It is possible to smoothly exhaust the hot air generated by solar radiation to the space between the panel body and the shielding means and the shielding means itself from the vent to the outside of the room.

  In the ventilation unit for a curtain wall according to the present invention, the ceiling member is provided between the indoor side surface of the upper side member and the ceiling plate of the ceiling, and the support portion is attached to the top surface thereof. It is good also as a structure which comprises the storage box which accommodates this support part, and made the ventilation hole of the indoor side of the said communicating hole connect in the said storage box. If it does so, the hot air which flowed in the storage box which accommodates and supports the upper end part of shielding means, such as a blind, can be discharged | emitted smoothly outside the room, and it can prevent that a hot air retains in the storage box and its peripheral part.

  In the curtain wall ventilation unit according to the present invention, the indoor vent of the communication hole may be formed in the outdoor wall surface of the storage box. Then, there is no need to connect a duct or the like between the communication hole and the storage box, and the cost and efficiency of installation work are improved.

  In the ventilation unit for a curtain wall according to the present invention, the communication hole may be housed within a range of a prospective width of the cross member, and may be configured integrally with the cross member. If it does so, the assembly | attachment operation | work of a ventilation unit can also be performed with the unit assembly operation | work of the curtain wall in a factory etc. For this reason, it is possible to install a ventilation unit at the same time by installing a curtain wall at the construction site, thereby improving cost and efficiency of installation work.

  The curtain wall according to the present invention is characterized in that the curtain wall ventilation unit having the above-described configuration is mounted. Thereby, sufficient ventilation capability can be ensured inside and outside the room.

  In the curtain wall according to the present invention, the support portion is configured to be attached to the ceiling member via a connecting means for allowing air to flow between the indoor side and the outdoor side of the shielding means. May be. Then, for example, the hot air staying in the vicinity of the ceiling in the living space of the building can be smoothly circulated from the upper part of the shielding means to the vent hole of the communication hole via the connecting means.

  The curtain wall according to the present invention has an upper cross member and a lower cross member extending between the left and right vertical members, and an intermediate horizontal member extending between the left and right vertical members between the upper cross member and the lower cross member. A vision part is formed between the intermediate cross member and the lower cross member to face the living space of the building, and the upper and lower floors of the building are formed between the upper cross member and the intermediate cross member. A spandrel portion facing the boundary portion may be formed, the ceiling member may be connected to the intermediate cross member, and the communication hole may be provided in the intermediate cross member. Then, the hot air generated in the living space can be discharged smoothly from the communication hole to the outside of the room.

  According to the present invention, sufficient ventilation capacity is ensured even when the room temperature at the window of the curtain wall rises due to the influence of solar radiation or the like, and an upward air flow along a shielding means such as a panel body or a blind occurs. It becomes possible.

FIG. 1 is an enlarged front view of an essential part of a building in which an outer wall is configured by a curtain wall including a curtain wall ventilation unit according to an embodiment of the present invention as viewed from the outdoor side. FIG. 2 is a longitudinal sectional view of the building shown in FIG. 1 in the vicinity of the curtain wall. FIG. 3 is a longitudinal sectional view in the vicinity of an intermediate cross member provided with a ventilation unit. FIG. 4 is a schematic cross-sectional view along IV-IV in FIG.

  Hereinafter, a curtain wall ventilation unit according to the present invention will be described in detail with reference to the accompanying drawings by giving a preferred embodiment by exemplifying a curtain wall equipped with the unit.

  FIG. 1 is an enlarged front view of a main part of a building 12 having an outer wall constituted by a curtain wall 11 including a ventilation unit 10 for a curtain wall according to an embodiment of the present invention, as viewed from the outdoor side. It is a longitudinal cross-sectional view in the vicinity of the curtain wall 11 of the building 12 shown in FIG.

  As shown in FIGS. 1 and 2, the curtain wall 11 has a unit structure in which a spandrel part 11 a and a vision part 11 b are vertically arranged inside a frame body 14, and each unit is arranged side by side vertically and horizontally. Spandrel portions 11a and vision portions 11b are alternately arranged in the vertical direction.

  The building 12 includes a floor 20 provided with a floor plate 19 on the upper surface side of the floor slab 18 attached to the housing 16, and a ceiling plate 22 suspended and supported on the lower surface side of the floor slab 18. In the building 12, the space between the lower surface of the floor slab 18 and the upper surface of the ceiling plate 22 is a boundary portion 12 a between the upper and lower floors, and the space between the lower surface of the ceiling plate 22 and the upper surface of the floor 20 is a living space 12 b.

  In the curtain wall 11, the spandrel portion 11a faces the boundary portion 12a and becomes the outer wall of the boundary portion 12a, and the vision portion 11b faces the living space 12b and becomes the outer wall of the living space 12b.

  The frame 14 is configured by a four-round framework of an upper cross member 14a, a lower cross member 14b, and left and right vertical members 14c, 14d, and left and right vertical members 14c, 14d between the upper cross member 14a and the lower cross member 14b. It is the structure which provided the intermediate cross member 14e which is a seamless material over. Each material 14a-14e is a metal extrusion shape material, such as aluminum, for example. The frame body 14 is fixed to the housing 16 using a fastener 24.

  The curtain wall 11 has a spandrel portion 11a formed by attaching an indoor side panel 26 and an outdoor side panel 27 to a portion surrounded by an upper horizontal member 14a, an intermediate horizontal member 14e, and left and right vertical members 14c, 14d. The vision portion 11b is formed by attaching a multilayer panel (panel body) 28 composed of the indoor side glass 28a and the outdoor side glass 28b to a portion surrounded by the material 14e, the lower horizontal member 14b, and the left and right vertical members 14c, 14d. Has been. In the case of this embodiment, the indoor side panel 26 is constituted by a board-like panel material having fire resistance, and the outdoor side panel 27 is constituted by a float glass plate. Moreover, the multilayer panel 28 is comprised by arrange | positioning the indoor side glass 28a and the outdoor side glass 28b which are two glass plates which have heat insulation and heat insulation through a spacer member.

  As shown in FIG. 2, the upper cross member 14a has a downward facing member arrangement groove 30a in which the upper edge of the indoor panel 26 is arranged on the prospective surface at the indoor edge, and the outdoor panel on the prospective surface. 27 has a downward facing member arrangement groove 31a in which the upper edge portion is arranged at the outdoor side edge portion. The intermediate cross member 14e has an upward facing member arrangement groove 30b on the indoor side edge portion where the lower edge portion of the indoor side panel 26 is arranged on the prospective surface, and the lower edge portion of the outdoor side panel 27 is arranged on the prospective surface. An upward facing face material arrangement groove 31b is provided at the outdoor edge. Although not shown, the left and right vertical members 14c and 14d each have a face material arrangement groove in which the side edge portion of the indoor side panel 26 is arranged at the indoor side edge portion thereof, and the outdoor side panel at the outdoor side edge portion thereof. Each has 27 face material placement grooves in which 27 side edges are placed.

  The intermediate cross member 14e has a downward facing face member arrangement groove 32a in which the upper edge portion of the multilayer panel 28 is arranged on the prospective surface at the outdoor side edge portion, and the lower cross member 14b is formed on the prospective surface of the multilayer panel 28. An upward facing member arrangement groove 32b in which the lower edge portion is arranged is provided at the outdoor edge portion. Although not shown, the left and right vertical members 14c and 14d each have a face material arrangement groove in which the side edge portion of the multilayer panel 28 is arranged at the outdoor side edge portion thereof.

  Between adjacent units of the curtain wall 11, the upper cross member 14 a and the lower cross member 14 b are bonded by pressure bonding between the primary seals 34, 34 on the outdoor side and pressure bonding between the secondary seals 35, 35 on the indoor side. Water is stopped (see FIG. 2), and water is also stopped between the longitudinal member 14c and the longitudinal member 14d by the same structure as the primary seal 34 and the secondary seal 35.

  In such a curtain wall 11, the ventilation unit 10 which opens over the longitudinal direction is integrally provided in the intermediate cross member 14e. The ventilation unit 10 is a natural ventilation device that naturally ventilates air inside and outside a building 12 partitioned by a curtain wall 11. The ventilation unit 10 opens between the spandrel portion 11a and the vision portion 11b on the outdoor side, and opens in a storage box 38 of a blind 36 provided between the intermediate cross member 14e and the ceiling plate 22 on the indoor side. ing.

  3 is a longitudinal sectional view in the vicinity of the intermediate cross member 14e provided with the ventilation unit 10, and FIG. 4 is a schematic sectional view along IV-IV in FIG.

  As shown in FIG. 3, the intermediate cross member 14 e includes an upper member 40 having face material arrangement grooves 30 b and 31 b for holding the indoor side panel 26 and the outdoor side panel 27 of the spandrel part 11 a on the upward prospective surface, and a vision part. It comprises a lower member 41 having a face material arrangement groove 32a for holding the multi-layer panel 28 of 11b on its downward prospective surface.

  The upper member 40 has a base portion 40a formed in a rectangular hollow shape and having a substantially downward L shape, and a substantially L-shaped protruding piece portion 40b connected to the outdoor side of the base portion 40a. A face material arrangement groove 30b is provided on the indoor side edge of the upper surface of the base portion 40a, and a face material arrangement groove 31b is provided on the upper surface of the protruding piece portion 40b.

  The lower member 41 has a base portion 41a formed in a rectangular hollow shape and in an approximately L shape, and a downwardly approximately L-shaped protruding piece portion 41b connected to the outdoor side of the base portion 41a. A face material arrangement groove 32a is provided on the lower surface of the protruding piece portion 41b.

  A gap for installing the ventilation unit 10 is provided between the upper member 40 and the lower member 41. That is, the ventilation unit 10 is accommodated in a rectangular space surrounded by the lower surface of the base portion 40a of the upper member 40, the upper surface of the base portion 41a of the lower member 41, and the prospective surfaces of the left and right vertical members 14c and 14d. (See also FIG. 1). The gap between the protruding piece 40b of the upper member 40 and the protruding piece 41b of the lower member 41 forms an intake / exhaust port 42 that opens the ventilation unit 10 to the outer wall surface.

  The ventilation unit 10 includes a frame 44 attached between the upper member 40 and the lower member 41 constituting the intermediate cross member 14e, a communication hole 46 penetrating through the inside of the frame 44 in the indoor and outdoor directions, and communication. A constant air volume flap 48 is provided in the middle of the hole 46 so as to be swingable.

  The frame 44 includes an upper frame 50 that is connected and fixed to the lower surface of the base portion 40 a of the upper member 40, and a lower frame 51 that is connected and fixed to the upper surface of the base portion 41 a of the lower member 41. A communication hole 46 is formed between the lower frame 51.

  On the indoor side surfaces of the upper frame 50 and the lower frame 51, a plate 52 in which a vent hole 46a serving as an opening on the indoor side of the communication hole 46 is formed is fixed. The plate 52 is fixed to the angle member 54 screwed and fixed to the upper member 40 and the lower member 41 using an attachment screw 56. A sealing material 58 is disposed between the plate 52 and the indoor side surfaces of the upper frame 50 and the lower frame 51, and the peripheral edge portion of the indoor vent 46 a is water-stopped. By removing the mounting screw 56 and removing the plate 52, the ventilation unit 10 can be easily accessed and maintenance can be performed.

  A frame-shaped base member 60 in which a vent hole 46 b serving as an opening on the outdoor side of the communication hole 46 is formed is connected to the outdoor side surfaces of the upper frame 50 and the lower frame 51. A sealing material 62 is disposed between the base member 60 and the outdoor side surfaces of the upper frame 50 and the lower frame 51, so that the peripheral edge of the outdoor vent 46 b is stopped. A plurality of louvers 63 extending in the left-right direction are installed on the upper and lower sides of the base member 60 (see also FIG. 1). The louver 63 is a gutter member that prevents rainwater and the like from entering the communication port 46 b of the communication hole 46.

  In the communication hole 46, the vent 46 a opens to the indoor side (the living space 12 b) of the curtain wall 11, and the vent 46 b opens to the outdoor side of the curtain wall 11. This is an air flow path that allows air to circulate. The communication hole 46 extends horizontally with a large cross-sectional area in the direction from the outdoor vent 46b to the indoor vent 46a, and is bent vertically upward by the rising portion 51a of the lower frame 51. In addition, the cross-sectional area is reduced to form a crank shape extending horizontally. The communication hole 46 is configured in such a crank shape to prevent rainwater or the like entering from the vent hole 46b from entering the indoor side.

  The constant air volume flap 48 controls the opening amount of the communication hole 46 by moving to the rocking position according to the air pressure difference inside and outside the communication hole 46 and the air volume difference, thereby keeping the air volume of the air passing through constant. To do. The communication hole 46 can be completely closed by setting the constant air flow flap 48 to the closing position indicated by a two-dot chain line in FIG. 3 by operating a manual operation mechanism or an electric operation mechanism (not shown). The ventilation unit 10 may be a natural ventilation device having a configuration in which the constant air amount flap 48 is omitted, for example, other than the constant air amount natural ventilation device including the constant air amount flap 48.

  In such a ventilation unit 10, the vent hole 46 a on the indoor side of the communication hole 46 is opened in the storage box 38 that stores and supports the upper end of the blind 36.

  As shown in FIG. 3, the storage box 38 includes a cover member 64 having a substantially L-shaped cross section connected between the outdoor side end of the ceiling plate 22 and the indoor side surface of the upper member 40 of the intermediate cross member 14 e. And a downward concave box formed by the plate 52 of the ventilation unit 10.

  The cover member 64 functions as a ceiling member that partitions the boundary portion 12 a and the living space 12 b together with the ceiling plate 22 by closing the gap between the ceiling plate 22 and the curtain wall 11. A head box (supporting portion) 36 a that supports the upper end portion of the blind 36 is attached to the top surface of the storage box 38, that is, the top surface 64 a of the cover member 64 via a connecting component 66.

  The blind 36 extends between the left and right vertical frames 14c and 14d, and has an outer shape capable of shielding substantially the entire surface of the multilayer panel 28 constituting the vision unit 11b with each slat 36b being fed out to the maximum. Have. For this reason, the head box 36a also extends between the left and right vertical frames 14c and 14d.

  As shown in FIG. 4, the connecting component 66 is a component having a longitudinal dimension sufficiently shorter than the longitudinal dimension of the head box 36a, and a plurality of coupling components 66 are attached at arbitrary intervals in the longitudinal direction of the head box 36a. Thus, the indoor side and the outdoor side near the upper end of the blind 36 partitioned by the head box 36a and the slat 36b are communicated with each other through the gaps between the connecting components 66 so that air can flow.

  As described above, such a storage box 38 has the outdoor side surface constituted by the plate 52 of the ventilation unit 10, that is, the vent hole 46 a of the communication hole 46 is formed in the outdoor side wall surface of the storage box 38.

  In this case, the curtain wall 11 according to the present embodiment is a ceiling member that forms the ceiling of the living space 12b facing the multilayer panel 28 on the indoor side surface of the intermediate cross member 14e that is the upper cross member of the vision unit 11b. A cover member 64 of the storage box 38 is connected, and a head box 36 a that supports the upper end portion of the blind 36 that is a shielding means disposed on the indoor side from the multilayer panel 28 is attached to the cover member 64. . The ventilation unit 10 is provided with a communication hole 46 that allows the intermediate cross member 14e to communicate with air inside and outside the curtain wall 11, and the ventilation hole 46a on the indoor side of the communication hole 46 is connected to the chamber of the head box 36a. It communicates with the outer position.

  Accordingly, the room temperature in the vicinity of the indoor side of the multilayer panel 28 that becomes the window of the curtain wall 11 rises due to the influence of solar radiation and the like, and the air A1 (FIGS. Even if this occurs, the air A1 is smoothly exhausted from the communication port 46a communicating with the position on the outdoor side of the head box 36a of the blind 36 to the outdoor side of the curtain wall 11. As a result, the ventilation unit 10 can ensure a sufficient ventilation capacity even when the room temperature of the indoor space partitioned by the curtain wall 11 rises. Further, since the vent hole 46a of the communication hole 46 is communicated with the position of the blind 36 on the outdoor side of the head box 36a, the slat 36b of the blind 36 is sent out to the maximum extent, and the interior side of the multilayer panel 28 is the blind 36. Even in a state where the air is completely shielded by the air, the air A1 which is hot air generated by the sun hitting the space between the multilayer panel 28 and the blind 36 and the blind 36 itself is smoothly transferred from the vent 46a to the outdoor. Can be exhausted. In addition, air A2 (see FIGS. 2 and 3), which is hot air staying in the vicinity of the ceiling plate 22 in the living space 12b due to the attracting action accompanying the outflow of the air A1 from the communication hole 46 at the window, is also from the communication port 46a. The effect of exhausting outside can be expected.

  In the ventilation unit 10, the air vent 46 a on the indoor side of the communication hole 46 of the ventilation unit 10 is communicated with the storage box 38 of the blind 36. For this reason, the air A1 flowing into the storage box 38 can be smoothly exhausted to the outside of the room, and hot air can be prevented from staying in and around the storage box 38 in the ceiling portion of the living space 12b. The communication port 46a of the communication hole 46 of the ventilation unit 10 and the storage box 38 may be communicated with each other by a duct or the like.

  In the curtain wall 11, the top surface of the storage box 38, which is a ceiling member, is connected to the head box 36 a via a connecting part 66 that constitutes a connecting means for allowing air to flow between the indoor side and the outdoor side of the blind 36. 64a. As a result, the air A2 (see FIGS. 2 and 3) that is hot air staying in the vicinity of the ceiling plate 22 in the living space 12b circulates from the ceiling plate 22 along the cover member 64, and is radiated from between the connecting components 66. It circulates along the surface 64a, and is smoothly exhausted from the vent 46a to the outdoor side of the curtain wall 11. In the present embodiment, as the connecting means for attaching the head box 36a to the top surface 64a, a configuration in which a plurality of connecting parts 66 are used and the gaps between the connecting parts 66 are used is illustrated. Directional communication holes may be formed.

  In such a ventilation unit 10, the air A3 (see FIG. 3), which is the outside air, can be taken together with the exhaust of the air A1 and A2 to the outside, and high ventilation performance can be obtained. Note that arrows A1 to A3 illustrating the air flow in FIGS. 2 and 3 schematically show the air flow in the ventilation unit 10 and the curtain wall 11, and the ventilation unit 10 and the curtain. Of course, the air flow in the wall 11 is not limited to this.

  As shown in FIG. 3, the ventilation unit 10 according to the present embodiment is housed within the range of the expected width of the intermediate cross member 14e and is configured integrally with the intermediate cross member 14e. For this reason, the assembly work of the ventilation unit 10 can be performed together with the assembly work of the unit of the curtain wall 11 in a factory or the like. At the construction site of the building 12, the ventilation unit 10 can be installed at the same time just by installing the curtain wall 11. Can be installed. Therefore, unlike the conventional ventilation unit, after the curtain wall is installed, it is not necessary to install the ventilation unit or its duct by an air conditioner or the like, and the cost and work efficiency are improved.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  In the above embodiment, the configuration in which the head box 36a of the blind 36 is attached to the top surface 64a of the cover member 64 as a ceiling member that forms the ceiling of the living space 12b is illustrated, but the storage box 38 is not provided. In this case, the head box 36a may be attached to the top surface (lower surface) of the ceiling plate 22 as a ceiling member.

  In the above-described embodiment, the intermediate cross member 14e and the lower cross member 14b are provided as the upper and lower cross members, and the ventilation unit 10 is integrally installed on the intermediate cross member 14e serving as the upper cross member. For example, in the case of a configuration in which a panel body is installed between the upper cross member 14a and the lower cross member 14b as the upper and lower cross members without the intermediate cross member 14e that is a seamless material, the upper cross member 14a has a ventilation unit. 10 may be provided.

  In the above embodiment, the blind 36 is exemplified as the shielding means, but the shielding means may be a curtain, a roll screen, or the like.

  DESCRIPTION OF SYMBOLS 10 Ventilation unit, 11 Curtain wall, 11a Spandrel part, 11b Vision part, 12 Building, 12a Boundary part, 12b Living space, 14 Frame, 14a Upper cross member, 14b Lower cross member, 14c, 14d Vertical member, 14e Middle cross Material, 16 frame, 20 floors, 22 ceiling panels, 26 indoor panel, 27 outdoor panel, 28 multi-layer panel, 28a indoor glass, 28b outdoor glass, 36 blind, 36a head box, 36b slat, 38 storage box 40 upper member, 41 lower member, 44 frame, 46 communication hole, 46a, 46b vent, 48 constant air volume flap, 50 upper frame, 51 lower frame, 63 louver, 64 cover member, 64a top surface, 66 connection parts

Claims (7)

A curtain wall ventilation unit with a panel between upper and lower horizontal members and left and right vertical members,
A ceiling member that forms a ceiling of a space facing the panel body is connected to an indoor side surface of the upper cross member, and an upper end of shielding means disposed on the indoor side from the panel body is connected to the ceiling member The support part that supports the part is attached,
The upper cross member is provided with a communication hole through which air can flow in and out of the curtain wall and communicates with a vent on the indoor side of the communication hole at a position outside the support portion. A ventilation unit for curtain walls, characterized by The ventilation unit for curtain walls according to claim 1,
The ceiling member is provided between the indoor side surface of the upper cross member and the ceiling plate of the ceiling, and constitutes a storage box for storing the support portion by attaching the support portion to the top surface thereof.
A curtain wall ventilation unit, wherein a ventilation hole on the indoor side of the communication hole is communicated with the storage box. In the ventilation unit for curtain walls according to claim 2,
A ventilating unit for a curtain wall, wherein a vent hole on the indoor side of the communication hole is formed in an outer wall surface of the storage box. In the ventilation unit for curtain walls according to any one of claims 1 to 3,
The ventilating unit for a curtain wall, wherein the communication hole is accommodated in a range of a prospective width of the cross member and is configured integrally with the cross member.   A curtain wall comprising the curtain wall ventilation unit according to any one of claims 1 to 4. The curtain wall according to claim 5,
The curtain wall is characterized in that the support portion is attached to the ceiling member via a connecting means for allowing air to flow between the indoor side and the outdoor side of the shielding means. The curtain wall according to claim 5 or 6,
While having an upper cross member and a lower cross member between the left and right vertical members, an intermediate cross member is provided between the left and right vertical members between the upper cross member and the lower cross member,
A vision portion is formed between the intermediate cross member and the lower cross member so as to face the living space of the building, and is opposed to a boundary portion between the upper and lower floors of the building between the upper cross member and the intermediate cross member. The spandrel part is formed,
The curtain wall, wherein the ceiling member is connected to the intermediate cross member, and the communication hole is provided in the intermediate cross member.

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