JP2006328802A - Sash frame with ventilation function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To impart ventilation function to a sash frame of a building and prevent dew condensation from generating on a surface on the indoor side. <P>SOLUTION: A partition wall 13 is formed between a pair of side walls 12 of a frame main body 11 of a sash frame 10R and a first space 10a inside the frame on the outdoor side and a second space 10b inside the frame on the indoor side are formed. An opening on the outdoor side of the first space 10a inside the frame is covered with a first decorative cover 21 and an opening on the indoor side of the second space 10b inside the frame is covered with a second decorative cover 22. A first ventilation hole 21a is formed in the first decorative cover 21 and a communication hole 13a is formed in the partition wall 13, and a second ventilation hole 22a is formed in the second decorative cover 22 and the communication hole 13a is opened/closed by an opening/closing device 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sash frame, and particularly to a sash frame provided with a ventilation function.

In general, the sash window frame is made of an aluminum mold, and the inside is a single cavity.
JP 2001-173325 A

  In winter, the sash window frame is cooled by the outside air and condensation tends to occur on the indoor side. In addition, convenience is improved if the frame itself has a ventilation function.

The present invention was made to solve the above problems, and is a sash frame with a ventilation function,
(A) having a pair of side walls and a partition wall that partitions the side walls into a first frame space and a second frame space, the first frame space being opened to the outside of the room; A frame body in which a space is opened indoors and a communication port is formed in the partition;
(B) a first decorative cover having a first ventilation hole and detachably closing an opening to the outdoor space in the first frame space;
(C) a second decorative cover having a second ventilation hole and detachably closing an opening to the room in the space in the second frame;
(D) An operation knob that is exposed indoors from the second decorative cover is attached to the inside of the frame main body (either the space in the first frame or the space in the second frame), and by operation of the operation knob An opening and closing device for opening and closing the communication port of the partition;
It is provided with. As a result, a ventilation function can be imparted to the sash frame, and condensation on the indoor side surface of the sash frame can be suppressed. Moreover, the space in the first frame of the frame body can be used as a housing space for various pipes or wires, and for example, a hose or the like that connects an outdoor unit and an indoor unit of an air conditioner can be housed. At this time, the appearance is not impaired.

  It is preferable that the frame main body is formed of an aluminum mold material that has the pair of side walls and the partition wall integrally and has a substantially H cross section.

  The 1st wall part which forms the 1st frame inner space of the said side wall, and the 2nd wall part which forms the 2nd frame inner space may be a different body. The partition may be integrally connected to any one of the first and second wall portions. The first wall portion is integrally connected to the partition wall, while the second wall portion is integrally connected to the second decorative cover, and the second wall portion and the second decorative cover that are integrated with each other are formed on the first wall portion. It may be connected so that attachment or detachment is possible. Thereby, the dew condensation to the indoor side part of a sash frame can be prevented more reliably.

An exposure opening for the indoor side portion of the opening / closing device is formed in the second decorative cover,
The second ventilation hole may be formed in the indoor side portion of the opening / closing device instead of the second decorative cover.

Preferably, a heat insulating material is provided on an inner surface of the first frame space and / or the second frame space of the frame body. Thereby, it is possible to more reliably prevent condensation on the indoor side surface of the sash frame.
Preferably, a drain is provided from the space in the second frame toward the outside of the room. Thereby, when dew condensation is made on the inner surface of the space in the second frame, it can be discharged outside the room.

The opening / closing device may be housed in the first frame space, may be housed in the second frame space, or may straddle these frame spaces.
The opening / closing device may be housed in the space in the second frame, and the inside of the opening / closing device may be a communication path that connects the communication port and the second ventilation hole. Furthermore, the inside of the opening / closing device, that is, the communication path may be separated from the space in the second frame, and the space in the first frame may communicate with the room without passing through the space in the second frame. The second decorative cover may be formed with a vent hole that communicates the space in the second frame and the room separately from the second vent hole.
The opening / closing device includes an operating plate that is displaceable between a closed position that closes the communication port of the partition wall and an open position that opens the communication port, and a connection mechanism that connects the displacement of the operating plate to the operation of the operation knob. Are preferably provided.

  Preferably, the sash frame extends vertically, and the heights of the first ventilation hole and the second ventilation hole are different from each other. This can prevent wind and rainwater from entering the room directly.

  It is preferable that the first ventilation hole is disposed at a lower side portion of the first decorative cover, and the second ventilation hole is disposed at an upper portion of the second decorative cover. This can more reliably prevent wind and rainwater from entering the room directly.

  It is desirable that the outer surface of the first decorative cover be black. As a result, the first decorative cover can be endothermic, the air can be warmed and sent into the room in the first frame space, and a heating effect can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to provide a ventilation function to a sash frame, it can prevent that dew condensation arises on the surface inside a sash frame.

Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a terrace window of a building. The building housing 1 is provided with an opening 1a for a terrace window. As shown in FIGS. 1 and 2, a sash frame 10 (vertical frame, vertical) is attached to the left and right edges of the opening 1 a of the housing 1. The sash frame 10 extends vertically. A sliding door shoji 2 is provided between the left and right sash frames 10, 10. Although not shown in detail, the upper end portions and the lower end portions of the left and right sash frames 10, 10 are connected to each other via a horizontal frame and are structurally integrated.

  When the left and right sash frames 10 and 10 are distinguished from each other, the left sash frame is denoted by “L” and the right sash frame is denoted by “L”.

  As shown in FIGS. 3 to 5, the sash frame 10 includes a frame body 11, a first decorative cover 21, and a second decorative cover 22.

  The frame body 11 is made of an aluminum mold and extends long in the vertical direction. The frame main body 11 has a pair of side walls 12 and a partition wall 13 connecting the intermediate portions of the side walls 12 together, and has a substantially H cross section. The interior of the frame body 11 (the space between the pair of side walls 12) is partitioned by a partition wall 13 into a first frame space 10a on the outdoor (outdoor) side and a second frame space 10b on the indoor (indoor) side. It has been. The first inner frame space 10a is opened to the outdoors, and the second inner frame space 10b is opened to the indoors.

  The opening to the outside of the first inner frame space 10 a is closed by the first decorative cover 21. The first decorative cover 21 is made of aluminum, has a flat plate shape, and extends vertically. Claws 21 f are provided on both the left and right edges of the first decorative cover 21. The claw 21f is hooked on the locking portion 12f at the outdoor side end of the side wall 12 of the frame main body 11. Thus, the first decorative cover 21 is detachably attached to the frame body 11.

  The surface of the first decorative cover 21 on the outdoor side is painted black. Thereby, the first decorative cover 21 is given heat absorption or heat retention.

  The indoor opening of the second inner space 10 b is closed by the second decorative cover 22. The second decorative cover 22 is made of aluminum, has a flat plate shape, and extends vertically. Claws 22 f are provided on both the left and right edges of the second decorative cover 22. The claw 22f is hooked on the locking portion 12g at the indoor side end of the side wall 12 of the frame main body 11. Thus, the second decorative cover 22 is detachably attached to the frame body 11.

  As shown in FIGS. 1 and 4, the sash frame 10L on the left side of the terrace window does not have a ventilation mechanism. The first decorative cover 21 and the second decorative cover 22 of the sash frame 10L are not provided with ventilation or ventilation holes. The first frame inner space 10 a and the second frame inner space 10 b are closed spaces, and are completely blocked by the partition wall 13 and are not in communication.

On the other hand, as shown in FIGS. 1 and 5, the sash frame 10R on the right side of the terrace window has a ventilation mechanism. The ventilation mechanism is configured as follows.
As shown in FIGS. 3 and 5, a number of first ventilation holes 21 a are formed in the first decorative cover 21 of the sash frame 10 </ b> R with a ventilation function. The first ventilation holes 21a are arranged in a biased manner on the lower side of the first decorative cover 21, have a slit shape that extends to the left and right, and are arranged in a line at a narrow interval vertically. The first frame space 10a communicates with the outside via the first ventilation hole 21a.

  A communication port 13a is formed in the partition wall 13 of the sash frame 10R with a ventilation function. The communication port 13 a is disposed so as to be biased toward the upper side of the frame body 11. Although the communication port 13a is elongated vertically and is divided into two, it is not limited to this, and the shape, size (length), number, etc. of the communication port 13a can be set as appropriate. The communication port 13 a is opened and closed by the opening / closing device 30.

  The opening / closing device 30 includes a device body 31 that is in the shape of a container that is vertically elongated and an opening / closing mechanism that is stored in the device body 31. The apparatus main body 31 is accommodated in the second inner frame space 10b, and is detachably installed on the indoor side surface of the partition wall 13 using bolts or brackets. The back plate 32 on the partition wall 13 side of the apparatus main body covers the communication port 13a. A through hole 32 a is formed in the back plate 32. When the opening / closing mechanism is “open”, the communication port 13a communicates with the inside of the apparatus main body 31 through the through hole 32a.

  The internal space of the apparatus body 31 and the second in-frame space 10 b of the frame body 11 are separated by the apparatus body 31.

  The opening / closing mechanism of the opening / closing device 30 includes an operation plate 33 and a cam 36. The operation plate 33 extends vertically so as to follow the inner surface of the back plate 32 of the apparatus main body 31. The actuating plate 33 is disposed so as to be slidable between a closed position approaching the back plate 32 (solid line in FIG. 5) and an open position spaced apart from the back plate 32 to the indoor side (virtual line in FIG. 5). . The operation plate 33 is biased toward the open position by a spring (not shown). A packing 34 is attached to the back plate facing surface of the operation plate 33.

  A shaft 35 that extends vertically (in the direction perpendicular to the plane of FIG. 5) is provided inside the apparatus main body 31. A cam 36 is fixed to the shaft 35.

An operation knob 37 is provided on the lower side of the apparatus main body 31. The operation knob 37 may be a push type or a lever type. By this operation knob 37, the shaft 35 and thus the cam 36 are rotated in an angle range of about 90 degrees around the axis of the shaft 35, and the operation plate 33 is slidably displaced between the closed position and the open position. .
The cam 36, the shaft 35, and a spring (not shown) constitute a linkage mechanism that links the displacement of the operation plate 33 and the operation of the operation knob 37.

  As shown by the solid line in FIG. 5, in the closed position, the cam 36 presses the operating plate 33 against the back plate 32 against the spring. Thus, the packing 34 closes the through hole 32 a of the back plate 32 and eventually closes the communication port 13 a of the partition wall 13.

  As shown by an imaginary line in FIG. 5, in the open position, the cam 36 faces sideways and the operation plate 33 and the packing 34 are separated from the back plate 32. As a result, the communication port 13 a of the partition wall 13 is communicated with the inside of the switchgear main body 31 through the through hole 32 a of the back plate 32.

  As shown in FIGS. 3 and 5, the second decorative cover 22 of the sash frame 10 </ b> R with a ventilation function is formed with a number of second ventilation holes 22 a. The second ventilation holes 22a each have a slit shape extending in the left-right direction, and are arranged in a row at a narrow interval vertically. The second ventilation hole 22 a is biased to the upper portion of the second decorative cover 22 and is disposed at the same height as the opening / closing device 30. Through the second ventilation hole 22a, the inside (communication path) of the switchgear main body 31 and the communication port 13a of the partition wall 13 are communicated indoors.

  A large number of ventilation holes 22e are formed on the left and right sides of the second ventilation hole 22a row of the second decorative cover 22. The ventilation holes 22e are each formed in a slit shape shorter than the second ventilation hole 22a, and are arranged at narrow intervals vertically in two rows on the left and right sides of the second ventilation hole 22a. The second frame internal space 10b communicates indoors through the vent hole 22e.

Furthermore, the drain 50 is provided in the sash frame 10R with a ventilation function. The drain 50 is configured as follows.
A notch is provided in the lower end portion of the partition wall 13 of the frame body 11, and a drain valve 51 is fitted therein. The drain valve 51 is a check valve that allows only the flow of fluid from the second frame inner space 10b to the first frame inner space 10a. As a result, when the outdoor wind blows into the first inner space 10a, the wind is closed and the wind is blocked. On the other hand, the drain valve 51 is opened when water accumulates at the lower end portion of the second frame inner space 10b and flows out into the first frame inner space 10a. A drain port 52 for discharging the water is formed at the lower end of the first decorative cover 21.

  According to the sash frame 10 having the above configuration, the interior is partitioned into two chambers, the outdoor side and the indoor side, and therefore, condensation is unlikely to occur on the indoor side surface of the second decorative cover 22. In particular, in the sash frame 10R with a ventilation function on the right side, indoor air can enter the second frame space 10b through the vent hole 22e, so that even if condensation can occur, the indoor side surface of the partition wall 13 is mainly used. It will be possible. Thereby, it is possible to prevent condensation on the indoor side surface of the second decorative cover 22. Condensation attached to the indoor side surface of the partition wall 13 accumulates at the lower end portion of the second inner frame space 10b, and is then discharged to the outside through the drain valve 51 and the drain port 52.

Furthermore, in the right sash frame 10R, when the opening / closing device 30 is opened (the phantom line in FIG. 5), the outdoor is the first ventilation hole 21a, the first frame inner space 10a, the communication port 13a, the through hole 32a, the device main body. The interior of 31 and the second ventilation hole 22a are communicated indoors sequentially. Thereby, outdoor and indoor ventilation can be performed via the sash frame 10R.
When the switchgear 30 is closed (solid line in FIG. 5), ventilation can be blocked.
Whether the opening / closing device 30 is open or closed, dew condensation on the indoor side surface of the second decorative cover 22 can be reliably prevented.

When the opening / closing device 30 is open, that is, when ventilation is performed, outside air enters the first frame inner space 10a from the first ventilation hole 21a on the lower side of the sash frame 10R, rises in the first frame inner space 10a, and passes through the sash frame. It is sent indoors through the opening / closing device 30 on the upper side of 10R.
The first decorative cover 21 facing the outside becomes hot when exposed to sunlight or the like. And since the surface of the 1st decorative cover 21 is black-processed, heat absorption is good and it can be made higher temperature. Thus, during ventilation, the outside air that has entered the first frame space 10a from the first ventilation hole 21a can be raised while warming. This warmed outside air can be sent indoors and a heating effect can be obtained.

  Since the heights of the first ventilation hole 21a and the second ventilation hole 22a are different from each other, it is possible to prevent outside air and rainwater from being blown straight into the room. Moreover, since the outdoor first ventilation hole 21a is disposed on the lower side and the indoor second ventilation hole 22a is disposed on the upper side, it is possible to reliably prevent the outside air and rainwater from being blown into the room. .

The first inner space 10a can also be used as a housing space for various fluid pipes and electrical wiring. For example, as shown in FIG. 5, a hose 70 that connects an outdoor unit and an indoor unit of an air conditioner can be housed. The air conditioner hose 70 can be hidden by the first decorative cover 21. Therefore, the appearance is not impaired. On the other hand, if the 1st decorative cover 21 is removed, the air-conditioner hose 70 can be confirmed easily and maintenance can be facilitated.
As long as the opening / closing device 30 does not get in the way, the second inner space 10b can be used as a housing space for various fluid pipes and electrical wiring.
As shown in FIG. 4, similarly for the sash frame 10L on the left side, the first frame inner space 10a and the second frame inner space 10b are used as accommodation spaces for various fluid pipes such as the air conditioner hose 70 and electric wiring. Can be used.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are given to the drawings and the description thereof will be omitted for the configurations described above.
In the embodiment shown in FIG. 6, the heat insulating material 60 is provided on the inner surface of the first frame inner space 10 a and the inner surface of the second frame inner space 10 b of the frame body 11. The heat insulating material 60 may be a dry heat insulating material having a long plate shape or a block shape, or may be a sprayed heat insulating material that is blown and foamed. The dry heat insulating material is preferably detachable.

  Accordingly, it is possible to prevent condensation on the surface on the indoor side of the second decorative cover 22 as well as condensation on the surface on the second frame space 10 b side of the partition wall 13. Since the first frame inner space 10a and the second frame inner space 10b are covered with the first decorative cover 21 and the second decorative cover 22, the heat insulating material 60 is not visible from the outside, and the aesthetic appearance is not impaired.

FIG. 6 shows the sash frame 10L having no ventilation function, but the heat insulating material 60 may be provided also on the sash frame 10R with the ventilation function.
The heat insulating material 60 is provided on both the inner surface of the first frame inner space 10a and the inner surface of the second frame inner space 10b of the frame main body 11, but is provided only on the inner surface of either one of the frame inner spaces 10a or 10b. You may decide.

  The arrangement position of the first ventilation hole 21a is not limited to the lower side portion of the sash frame 10. As shown in FIG. 7 (a), the first ventilation hole 21a may be arranged at the upper part of the first decorative cover 21, and as shown in FIG. Alternatively, as shown in FIG. 3C, the upper and lower portions may be provided over almost the entire length.

  The arrangement positions of the second ventilation hole 22a and the ventilation hole 22e are not limited to the upper part of the sash frame 10. As shown in FIG. 8A, the second ventilation hole 22a and the ventilation hole 22e may be disposed on the lower side of the second decorative cover 22, and as shown in FIG. It may be arranged at a height, or as shown in FIG.

The mutual relationship between the arrangement positions of the first ventilation holes 21a and the arrangement positions of the ventilation holes 22e and the second ventilation holes 22a can be appropriately combined. For example, the first ventilation hole 21a may be disposed on the upper side of the sash frame 10, and the ventilation hole 22e and the second ventilation hole 22a may be disposed on the lower side of the sash frame 10. It is preferable to arrange | position the 1st ventilation hole 21a, the ventilation hole 22e, and the 2nd ventilation hole 22a in a different position up and down.
Since the decorative covers 21 and 22 can be attached to and detached from the frame body 11, they can be changed as needed even after the building is in service, and the positions of the holes 21 a, 22 e, and 22 a can be changed as appropriate. it can.
The appearance design can be freely changed by changing the decorative covers 21 and 22.

  In the embodiment shown in FIG. 9, the indoor side opening end portion of the device main body 31 of the opening / closing device 30 is separated from the second decorative cover 22 to the outdoor side, and is positioned at the intermediate portion of the second inner frame space 10 b. The internal space of the apparatus main body 31 is continuous with the second frame internal space 10 b, and the second internal frame space 10 b is continuous with the second ventilation hole 22 a of the second decorative cover 22. The second ventilation hole 22a of this embodiment also serves as the ventilation hole 22e of the first embodiment.

The second ventilation hole may be provided in the opening / closing device 30 instead of the second decorative cover 22.
That is, in the embodiment shown in FIG. 10, the front wall 38 (indoor side portion) is provided on the device main body 31 of the opening / closing device 30. A second ventilation hole 38 a is formed in the front wall 38.
The second decorative cover 22 has an exposure opening 22c. The front wall 38 of the opening / closing device 30 is fitted into the exposure port 22c, and the front wall 38 is exposed indoors.

In the embodiment shown in FIG. 11, the first wall portion 12A that forms the first frame space 10a on the outdoor side of the side wall 12 and the second wall portion 12B that forms the second frame space 10b on the indoor side are: They are separate from each other. The partition wall 13 is integrally connected to the second wall portion 12B. The first wall portion 12A and the second wall portion 12B are connected by a bridge 80 made of a heat insulating resin. The bridge 80 faces the first in-frame space 10a. The partition wall 13 may be integrated with the first wall portion 12A instead of the second wall portion 12B, and the bridge 80 may face the second in-frame space 10b.
Accordingly, the first wall portion 12A and the second wall portion 12B of the side wall 12 can be thermally blocked, and the occurrence of condensation on the indoor side portion of the sash frame 10 can be reliably prevented.

  In the embodiment shown in FIG. 12, the side wall 12 is separated into a first wall portion 12A and a second wall portion 12B as in the embodiment of FIG. On the other hand, the partition wall 13 is integrated with the first wall portion 12A. In addition, the second wall portion 12 </ b> B and the second decorative cover 22 are integrally connected to form a walled cover 25 having a U-shaped cross section. A hook 16 is attached to the edge of the second wall portion 12B of the walled cover 25 on the outdoor side. The hook 16 is made of a hardware, but may be formed into a claw shape integral with the walled cover 25. The hook 16 is detachably engaged with a locking portion 12h provided on the first wall portion 12A. As a result, the walled cover 25 is detachably connected to the first wall portion 12A.

In the engaged state, the second wall portion 12B is overlapped on the outer surface of the first wall portion 12A, and the packing 81 is provided between the overlapping portions. The packing 81 may be attached to the first wall portion 12A or may be attached to the second wall portion 12B. The packing 81 may be omitted, and a gap may be formed between overlapping portions of the first wall portion 12A and the second wall portion 12B.
According to the embodiment of FIG. 12, the first wall portion 12A and the second wall portion 12B can be thermally blocked, and it is possible to more reliably prevent the occurrence of condensation on the indoor side portion of the sash frame 10. it can.
The first decorative cover 21 is provided with a hook 21g made of a metal for engaging with the locking portion 12f of the first wall portion 12A. However, as in the first embodiment, the first decorative cover 21 is provided. Alternatively, a claw 21f integrated with 21 may be provided.

Furthermore, the present invention is not limited to the above embodiment, and various modifications can be made.
For example, in the case where there is no ventilation mechanism such as the left sash frame 10 </ b> L of the first embodiment, the second decorative cover 22 may be formed with the air holes 22 e. Thereby, it is possible to reliably prevent condensation on the indoor side surface of the second decorative cover 22. In this case, it is preferable to provide a drain 50 for discharging condensation formed on the side surface of the second inner space 10 b of the partition wall 13.
A ventilation mechanism may also be provided on the left sash frame 10L.

You may decide to equip | install the 1st space 10a with the instrument (a heater or a heat exchanger) which warms air.
The first decorative cover 21 may have heat reflectivity or heat dissipation. Thereby, it is possible to prevent warm outdoor air from being further heated and sent indoors in summer or in warm regions.

  The present invention is not limited to terrace windows and can be applied to various windows in buildings. It can be applied to windows in residential buildings and office buildings.

It is a top view of the terrace window of a building which shows 1st Embodiment of this invention. It is a side view of the sash frame of the said terrace window. It is a disassembled perspective view of the sash frame with a ventilation function. It is a plane sectional view of a sash frame without a ventilation function. It is a plane sectional view of a sash frame with a ventilation function. It is plane sectional drawing which shows the modification which provided the heat insulating material in the inner surface of the space in a sash frame. (A)-(c) is a front view which shows the modification of the arrangement position of the 1st ventilation hole of a 1st decorative cover. (A)-(c) is a front view which shows the modification of the arrangement position of the 2nd ventilation hole and ventilation hole of a 2nd decorative cover. It is a plane sectional view of a sash frame with a ventilation function showing an embodiment with a small depth of an opening and closing device. It is a plane sectional view of a sash frame with a ventilation function showing an embodiment in which the switchgear is exposed indoors. It is a plane sectional view showing an embodiment of a sash frame with a ventilation function in which an outdoor portion and an indoor portion of a side wall are separated. It is a plane sectional view showing an embodiment of a sash frame with a ventilation function in which the outdoor portion and the indoor portion of the side wall are separated and the indoor portion and the second decorative cover are integrated.

Explanation of symbols

10L Sash Frame 10R Without Ventilation Function Sash Frame 10a with Ventilation Function First Frame Space 10b Second Frame Space 11 Frame Body 12 Side Wall 12A First Wall Portion 12B Second Wall Portion 13 Partition Wall 13a Communication Port 21 First Makeup Cover 21a First ventilation hole 22 Second decorative cover 22a Second ventilation hole 22c Exposed port 22e Vent hole 25 Cover with wall 30 Opening / closing device 31 Opening / closing device main body (forming member of communication port and communication path of second ventilation hole)
33 Actuating plate 35 Shaft 36 Cam 37 Operation knob 38 Front wall (inner side of the switchgear)
50 Drain 51 Drain valve 52 Drain port 60 Heat insulating material 70 Air conditioner hose 80 Bridge 81 Packing

Claims (9)

(A) having a pair of side walls and a partition wall that partitions the side walls into a first frame space and a second frame space, the first frame space being opened to the outside of the room; A frame body in which a space is opened indoors and a communication port is formed in the partition;
(B) a first decorative cover having a first ventilation hole and detachably closing an opening to the outdoor space in the first frame space;
(C) a second decorative cover having a second ventilation hole and detachably closing an opening to the room in the space in the second frame;
(D) an opening / closing device that has an operation knob that is exposed from the second decorative cover to the room and is attached to the inside of the frame body, and that opens and closes the communication port of the partition wall by operation of the operation knob;
A sash frame with a ventilation function characterized by comprising. An exposure opening for the indoor side portion of the opening / closing device is formed in the second decorative cover,
2. The sash frame with a ventilation function according to claim 1, wherein the second ventilation hole is formed in an indoor side portion of the opening / closing device in place of the second decorative cover.   The sash frame with a ventilation function according to claim 1 or 2, wherein a heat insulating material is provided on an inner surface of the first frame inner space and / or the second frame inner space of the frame main body.   The sash frame with a ventilation function according to any one of claims 1 to 3, wherein a drain is provided from the space in the second frame toward the outside of the room.   The sash frame with a ventilation function according to any one of claims 1 to 4, wherein the sash frame extends vertically, and the heights of the first ventilation hole and the second ventilation hole are different from each other.   6. The ventilation according to claim 5, wherein the first ventilation hole is disposed on a lower side of the first decorative cover, and the second ventilation hole is disposed on an upper side of the second decorative cover. Sash frame with function.   The sash frame with a ventilation function according to claim 6, wherein a surface on the outdoor side of the first decorative cover is black.   The first wall portion forming the first frame inner space of the side wall and the second wall portion forming the second frame inner space are separated, and the first wall portion is integrally connected to the partition wall. The second wall portion is integrally connected to the second decorative cover, and the integrated second wall portion and the second decorative cover are detachably connected to the first wall portion. The sash frame with a ventilation function in any one of claim | item 1 -7.   The opening / closing device according to any one of claims 1 to 8, wherein an operation plate displaceable between a closed position for closing the communication port of the partition wall and an open position for opening the communication port, An opening / closing device for a sash frame with a ventilation function, comprising a linkage mechanism for linking displacement with an operation of the operation knob.

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