JP2001146876A - Heat insulating sash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating sash reducible in manufacturing cost and positively providing moisture condensation proof performance. SOLUTION: The respective frames 11-13 of a window frame 10 are formed of heat insulating shapes comprising indoor members 111, 121, outdoor members 112, 122 and heat insulating members 113, 123, while a transom body 150 of a transom 15 is formed of an aluminum extruded shape and jointed to the outdoor member of the vertical frame 13. The transom body 150 can be formed at a lower cost than being formed of a heat insulating shape, while bonding strength to the vertical frame 13 can be sufficiently ensured even if the transom body 150 is thinned, so that the cost can be further reduced by the thinned portion. The transom body 150 has a large contact area with indoor air, but sufficient moisture condensation proof performance can be imparted to the transom 15 by covering the transom body 150 with a heat insulating cover 151.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating sash, in which a vertical aggregate and a horizontal aggregate are arranged in a frame having four frames formed by an upper frame, a lower frame, and right and left vertical frames formed of so-called heat-insulated profiles. And a heat insulating sash comprising a window frame and the like.

[0002]

2. Description of the Related Art As a recent heat insulating sash, there has been known a heat insulating sash in which an upper frame, a lower frame, and right and left vertical frames constituting a window frame are formed of heat insulating profiles. Such a heat-insulated profile is composed of a metal indoor member, a metal outdoor member, and a heat insulating member connecting these indoor and outdoor members, and the outdoor member exposed to the outside is cooled by outside air. However, since the heat is not conducted to the indoor member by the heat insulating member, the surface temperature on the indoor side surface of the indoor member becomes close to room temperature, and dew condensation hardly occurs.

On the other hand, even in such a heat insulating sash,
There is a case where a horizontal or vertical window is formed by disposing a vertical or horizontal aggregate in a window frame. In such a continuous window, good lighting can be obtained by using a larger window frame,
There is a merit that the strength as a window frame can be reliably ensured.

[0004]

However, in the conventional continuous window type heat-insulating sash, not only the frame around the window frame but also the vertical and horizontal aggregates are made of metal indoor and outdoor members and resin. Because it is formed of a heat-insulating member made of a heat-insulating member,
The use of heat-insulated members increases the work required to connect indoor and outdoor members with heat-insulating members, and increases the manufacturing cost, such as the necessity of preparing resin materials in addition to metal materials such as aluminum. There is.

An object of the present invention is to reduce the manufacturing cost,
Another object of the present invention is to provide a heat insulating sash capable of reliably obtaining dew-proof performance.

[0006]

According to the present invention, an upper frame, a lower frame,
And a frame in which the left and right vertical frames are framed four times, and a heat insulating sash including at least one of a vertical aggregate and a horizontal aggregate disposed in the frame. Each frame is configured to include a metal indoor member, a metal outdoor member, and a heat insulating member that connects these indoor and outdoor members, and the aggregate includes a metal aggregate main body, A heat insulating cover that covers an indoor side surface of the aggregate body, and wherein an end of the metal aggregate body is joined to a metal outdoor member of the frame. It is a sash.

In the present invention, as an aggregate such as a vertical aggregate or a horizontal aggregate, instead of using an insulated shape, for example, a metal aggregate main body made of an extruded shape and a resin or wooden aggregate are used. Is used, the cost of the aggregate member is reduced, and the overall manufacturing cost of the heat insulating sash is reduced. By joining the metal aggregate body to a similar metal outdoor member, even when the aggregate body is made thinner, each joint strength can be strengthened, and as much as the aggregate body can be made thinner, the aggregate Material costs are further reduced. Also, the aggregate body has a larger area that comes into contact with indoor air than the frame attached to the opening of the building frame, but the indoor side surface of such an aggregate body is covered with a heat insulating cover. As the metal aggregate body that comes in contact with the outside air is joined to the outdoor member of the frame, there is no need to worry about the cold heat of the aggregate body being transmitted to the indoor member of the frame. To prevent the deterioration of the dew-proofing performance, thereby preventing the occurrence of dew condensation.

Further, in the heat-insulating sash of the present invention, it is desirable that the indoor member constituting each frame of the frame is also provided with a heat-insulating cover for covering the indoor side surface. In such a configuration, the heat-insulating cover that further covers the indoor side surface is provided on the indoor member that is normally hard to be cooled, so that the surface substantially exposed to the indoor side is more difficult to be cooled, and the dew-proof performance as the frame body is improved. Is significantly improved.

In the heat-insulating sash of the present invention, the heat-insulating cover provided on the indoor member straddles the indoor member and the outdoor member, and at least the entire area of the indoor side surface of the indoor member and at least the outdoor member. It is desirable to cover a part of the indoor side. In such a configuration, in addition to the indoor member of the frame, the visible portion of the outdoor member, for example, from the indoor side, can be easily covered with the heat insulating cover, so that the dew-proof performance of the entire frame is further improved. I do.

[0010] In the heat insulating sash of the present invention, the expected size of the aggregate is smaller than the expected size of the frame.
It is desirable that the indoor-side end surface of the aggregate is located more outdoor than the indoor-side end surface of the frame. Since the aggregate does not have a heat insulating member unlike the frame of the frame, the expected size can be easily reduced compared to the frame, and when the expected size is reduced,
By positioning the indoor side end surface outside the indoor side end surface of the frame, a large opening space that is not partitioned by aggregate is formed on the indoor side inside the frame, and a feeling of openness is obtained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In the second and third embodiments described below, the same reference numerals are given to the same functional members as in the first embodiment described below, and the description thereof will be omitted or simplified.

[First Embodiment] FIG. 1 is a longitudinal sectional view showing a heat insulating sash 1 according to the present embodiment, and FIGS. 2 and 3 are seen from arrows II-II and III-III in FIG. 1, respectively. FIG. The heat insulating sash 1 is a vertically continuous window in which the upper side in the window frame 10 which is a frame is a fitting window, and the lower side is a vertical sliding window, and a multilayer glass surface material 20 is arranged on the fitting window side. On the side of the vertical sliding window, a shoji (shoji) 30 is arranged to be openable and closable via upper and lower hinges.

The window frame 10 has a structure in which an upper frame 11, a lower frame 12, and left and right vertical frames 13 are framed around four times.
Inside, a blind 15 as a horizontal aggregate is arranged.
The upper side of the window is a fitting window, and the lower side is a sliding window. Window frame 1
The frames 11, 12, and 13 are made of aluminum extruded members and outdoor members 112, 122, and 132 similarly made of extruded aluminum members.
And resin heat insulating members 113 and 12 for connecting them.
3 and 133. On the other hand, the blind 15 has a blind body 150 as an aggregate body made entirely of an extruded aluminum member, and a resin heat-insulating fitting fitted to the indoor side of the blind body 150 to cover the indoor side surface. And a heat-insulating profile. This is one of the points different from the conventional one. In the blind 15, both ends of the blind body 150 are joined to the outdoor members 132 of the respective vertical frames 13, and even if the blind body 150 is cooled by the outside air, the heat is not transmitted to the indoor members 131 of the vertical frame 13. ,Also,
By joining the seamless body 150 and the outdoor member 132, both of which are made of aluminum, the joining strength is reliably ensured.

In this embodiment, each of the heat insulating members 11
3, 123 and 133 are formed by an injection method of a urethane resin or the like. As the heat insulating member, for example, a synthetic resin plate-shaped member fixed by caulking between a metal indoor member and an outdoor member is used. Good.

To describe each component specifically, the upper frame 1
1 is provided with a heat insulating cover 114 made of resin so as to straddle the indoor and outdoor members 111 and 112. The heat-insulating cover 114 is provided on the indoor side together with the indoor member 111 with the screws 11.
5 and fixed to a lintel or the like, and the outdoor side is locked to an outdoor member 112. On the indoor side of the heat insulating cover 114, a resin closing member 116 for hiding the screw 115 is fitted, and on the outdoor side, a resin upper pressing edge for holding the indoor upper edge of the glass panel 20. 117 are fitted. As a result, the entirety of the indoor side surface of the indoor member 111 of the upper frame 11 is covered with the heat insulating cover 114, and the visible portion of the outdoor member 112 from the indoor side is part of the outdoor side of the heat insulating cover 114 and the upper ridge. 117 to hide.

The lower frame 12 has indoor and outdoor members 121 and 122.
A heat insulating cover 124 made of resin is provided so as to straddle
Another heat insulating cover 125 is provided so as to be sandwiched between the upper and lower mounting pieces 121A, 121B of the indoor member 121. The heat insulating cover 124 has an outdoor member 122 on the outdoor side.
In the state where the screw 12 is locked, the screw 12
6 and 127, and the heat insulating cover 125 is fixed to the mounting piece 121A with the screw 126 with the lower side locked to the mounting piece 121B of the indoor member 121. As a result, the entire indoor side surface of the indoor member 121 of the lower frame 12 is covered with the heat insulating covers 124 and 125.
The part of the outdoor member 122 that is visible from the indoor side is hidden by a part of the heat insulating cover 124 on the outdoor side.

The vertical frame 13 will be described with reference to FIGS. First, in the fitting window portion (FIG. 2), the vertical frame 13 is provided with a heat insulating cover 134 made of resin so as to straddle the indoor and outdoor members 131 and 132. Insulation cover 13
4 is provided with a closing member 136 for hiding a wood screw 135 for fixing the heat insulating cover 134 and the indoor member 131, and a vertical ridge 137 for holding the glass panel 20 is provided on the outdoor side. ing. The cross-sectional shapes of the heat-insulating cover 134, the closing member 136, and the vertical edge 137 are the same as the cross-sectional shapes of the heat-insulating cover 114, the closing member 116, and the vertical edge 117 for the upper frame 11. Even in such a vertical frame 13, the entire indoor side surface of the indoor member 131 is covered with the heat insulating cover 134, and the outdoor member 112.
Of the heat-insulating cover 134 is hidden by a part of the heat-insulating cover 134 on the outdoor side and the vertical ridge 137.

In the vertical sliding window portion (FIG. 3), the indoor side of the shoji screen 30 abuts on the indoor side of the heat insulating cover 134 straddling the indoor and outdoor members 131 and 132 instead of the vertical ridge 137 shown in FIG. A hollow portion 134A is integrally provided, and a handle 138 is locked to the hollow portion 134A of one of the heat insulating covers 134.

Returning to FIG. 1, the upper portion of the heat-insulating cover 151 fitted to the blind 15 extends to a height that holds the lower edge of the face material 20 on the indoor side, and the lower portion of the heat-insulating cover 151 has A resin attachment 152 to which the upper edge of the shoji 30 contacts is fitted. The entire expected size w1 of the blind 15 is smaller than the expected size W1 of the window frame 10, and the indoor side end surface 15A of the seamless 15 (insulating cover 151) is located outside the indoor side end surface 10A of the window frame 10. positioned. As a result, a large opening space A that is surrounded by the closing members 116 and 136 and the heat-insulating cover 124 on the indoor side inside the window frame 10 and is not partitioned by the blind 15 is formed. Have been. In addition, the indoor side end face 15A of the blind 15 is fitted to each of the ridges 1 on the side of the fitting window.
17, 137 and the interior side surface of the attachment 152 and the hollow portion 134A of the vertical frame 13 on the side of the vertical sliding window to improve the interior design from the interior side. .

In the above description, the four outer edges of the glass facing material 20 on the outdoor side are, as shown in FIGS.
3 and an aluminum holding member 16 previously screwed to the eye 15 in advance.

On the other hand, the shoji screen 30 is composed of an upper frame 31, a lower frame 32, and left and right vertical frames 3 made of extruded aluminum members.
3 (FIG. 3) is provided with a frame 34 having four frames around which a glass panel 35 is disposed. In addition, resin-made heat-insulating covers 311, 321, 331 that cover the indoor side surfaces are fitted to the respective frames 31, 32, 33, which improve the dew-proofing performance of the shoji 30 and are made of glass. The pressing edge on the indoor side of the face material 35 is also used. As shown in FIGS. 1 and 3, the shoji screen 30 has a lower frame 12 and a vertical frame 1.
3, and the sealing material 12B, 13B,
15B. At this time, the lip groove 13A of the vertical frame 13 to which the sealing material 13B is attached is
The glass facing 20 is used to attach the holding member 16.

According to this embodiment, the following effects can be obtained. 1) The window frame 10 is such that each frame 11, 12, 13 is an indoor member 11
1, 121, 131, outdoor members 112, 122, 12
3, and the heat-insulating members 113, 123, and 133, but since the seamless body 150 of the blind 15 is a normal extruded shape, the conventional body 150 is also formed of a heat-insulating member. And the manufacturing cost of the heat insulating sash 1 can be reduced. Further, since both ends of the aluminum aggregate body 150 are joined to the similar aluminum outdoor member 132 of the vertical frame 13, even when the aggregate body 150 is made thin, the joint strength of each can be increased, and The member cost of the aggregate 15 can be further reduced as much as the material body 150 can be made thinner.

2) The blind body 150 has a larger area in contact with the room air than the frames 11, 12, and 13 attached to the opening of the building frame, but the indoor side surface of the blind body 150 has a heat insulating cover. Since it is covered with 151, it is possible to reliably obtain the dew-proof performance and prevent the occurrence of dew condensation. Moreover, since the blind body 150 that contacts the outside air is joined to the outdoor member 132 of the vertical frame 13, there is no concern that cold heat of the blind body 150 is transmitted to the indoor member 131 of the vertical frame 13, and the vertical frame 13 is also good. It is possible to obtain excellent dew-proof performance.

3) In the heat-insulating sash 1 of this embodiment, the heat-insulating covers 114, 124, and 12 that cover the indoor side surfaces are also provided on the indoor members 111, 121, and 131 of the frames 11, 12, and 13, respectively.
Since the members 5, 134 are provided, the interior members 111, 112, 131, which are hardly cooled even under normal conditions, can be further hardly cooled, and the dew-proof performance can be remarkably improved.

4) At this time, the heat insulating covers 114 and 12
4, 134 cover the entire area of the indoor side surface of the indoor members 111, 121, 131, and the outdoor members 112, 122,
132 also covers the visible portion from the indoor side, so that the outdoor members 112, 122, and 13 through which cold heat is easily conducted.
2, dew condensation can be prevented, and the dew-proof performance of the entire window frame 10 can be further improved.

5) The expected size w1 of the blind 15 is the window frame 1
0, which is smaller than the expected dimension W1
Since A is located outside the indoor side end surface 10A of the window frame 10, the surroundings of the indoor side inside the window frame 10 are surrounded by the closing members 116 and 136 and the indoor side portion of the heat insulating cover 124. In addition, it is possible to form the opening space A that is largely open toward the room, and it is possible to give a feeling of opening.

6) The indoor side end face 15A of the blind 15 is flush with the interior side face of each of the pressing edges 117 and 137 on the side of the fitting window, and the hollow part 134A of the attachment 152 and the vertical frame 13 on the side of the vertical sliding window. Because it is flush with the interior side of the room, even in the case of a multi-window that has a different window form such as a fitted window on the upper side and a vertical sliding window on the lower side,
The interior from the indoor side can be refreshed, and the design can be improved.

7) Each frame 3 constituting the frame 34 of the shoji screen 30
1, 32, and 33 also have the heat insulating covers 311, 321, and 331 that cover the indoor side surface, so that heat from the outdoor side of the shoji screen 30 can be prevented from being conducted to the surface exposed to the indoor side, The dew proof performance of the shoji 30 can also be improved.

8) In this case, each frame 31, 3 of the shoji 30
Although it is possible to further improve the dew-proofing performance by forming the heat insulating members 2 and 33 from heat-insulating profiles, each of the frames 31 and 33 of the vertical sliding window can be improved.
Since 32 and 33 have a large area in contact with room air, sufficient dew-proofing performance can be obtained without using such a heat-insulating profile, and the cost can be reduced because no heat-insulating profile is used. In addition, since the expected size of the shoji 30 can be reduced by not using the heat-insulating shape member, the shoji 30 can be reliably contained within the expected size w1 of the blind 15.

[Second Embodiment] FIG. 4 is a longitudinal sectional view of a heat insulating sash 2 according to a second embodiment. The heat insulating sash 2 is a vertically continuous window in which both the upper and lower sides are fitted and killed, and are provided with glass surface materials 20 above and below.

In such a heat insulating sash 2 as well, the frames 11, 12, 13 of the window frame 10 are connected to the indoor / outdoor members 111, 121, 1, 1.
31, 112, 122, 132 and the heat insulating member 11
3,123,133
Numeral 5 is composed of a blind body 150 made of an extruded aluminum profile and a heat-insulating cover 151, and is not a heat-insulated profile. Both ends of the aluminum blind body 150 are also attached to each vertical frame 1.
3 and is joined to an aluminum outdoor member 132 to ensure heat insulation performance and joining strength. Further, in the present embodiment, the attachment 152 attached to the heat insulating cover 151 functions as an upper edge that holds the indoor upper edge of the lower glass surface material 20. The expected size w of this blind 15
1 is smaller than the expected size W1 of the window frame 10 and
The indoor side end face 15A is located outside the indoor side end face 10A of the window frame 10 and is flush with the indoor side faces of the pressing edges 117 and 137 and the attachment 152.

The outside of the lower glass panel 20 is held by holding members 16 screwed to the lower frame 12 and the eyelets 15 similarly to the upper side. Further, in the heat insulating sash 2, the lower frame 12 and the blind 15 are formed of the same heat insulating and extruded members as those of the first embodiment, and the holding member 16 is formed of the sealing members 12B and 15B (see FIG. 1). By changing to, it can be used for both fitting windows and sliding windows. Of course, the same applies to the upper frame 11.

Here, the same vertical frame (see FIGS. 2 and 3) as that of the first embodiment may be used as the vertical frame 13, but FIG.
A vertical frame 13 shown on the right side in the middle may be used. In the vertical frame 13 on the right side, unlike the vertical frame 13 on the left side (that is, the vertical frame 13 in the first embodiment), a holding piece 13C for holding the outdoor side of the glass surface material 20 is integrally formed and held. Member 16
There is no need to use This is because the upper and lower portions of the heat insulating sash 2 are both fitted windows. In addition, the heat insulating cover 134, the closing member 136, and the vertical ridge 13
7 and the like have the same cross-sectional shape as the first embodiment.

According to the present embodiment, the same effects as in the above 1) to 6) can be obtained by the same configuration as in the above-described first embodiment, and the same lower frame 12 and the same structure as those in the first embodiment can be obtained. The sliding window can be replaced with a blind window by using the eye 15, and in some cases, the vertical frame 13 can be made the same as that of the first embodiment, and the common use of members can be promoted.

Third Embodiment FIG. 5 is a cross-sectional view of a heat insulating sash 3 according to a third embodiment. The heat insulating sash 3 is a horizontal window in which the right side in the drawing is a fitting window and the left side is a vertical sliding window. Therefore, a ridge 17 as a vertical aggregate is erected in the center of the window frame 10.

Each frame 11 of the window frame 10 (see FIGS. 1 and 4),
12, 13 are indoor and outdoor members 111, 121, 131, 1
12, 122, 132, and heat insulating members 113, 12
3,133, the cubic 17 is a cubic body 1 as an aggregate body made of an extruded aluminum member.
70 and a heat insulating cover 171 that covers the indoor side surface, and is not a heat-insulated profile. Both ends of the aluminum cubic main body 170 are joined to the aluminum outdoor members 122 of the upper frame (not shown) and the lower frame 12 to ensure heat insulation performance and joining strength. In addition, on the side of the window that is fitted with the heat insulating cover 171, the vertical edge 1 that holds the glass surface material 20 is provided.
72 are fitted. The expected size w2 of the cubic 17 is
The indoor side end face 17A of the cubic 17 is smaller than the expected dimension W1 of the window frame 10, and is flush with the indoor side faces of the vertical ridges 137, 172 and the hollow portion 134A.

In the present embodiment, the upper ridge 117 of the upper frame 11 (see FIGS. 1 and 4) is of a two-part type, one of which is used as the ridge for the glass panel material 20 and the other is in contact with the indoor side of the shoji 30. Function as an attachment. In the lower frame 12, a holding member 16 for holding the glass surface material 20 is provided at the outdoor end on the side of the fitted window, and a sealing material 12B (see FIG. 1) interposed between the sliding window 30 and the sliding window 30 is provided on the sliding window side. Each is attached and corresponds to a window part of a different form. As described in the second embodiment, the vertical frame 13 on the side of the fitted window is of a type having the holding piece 13C integrally. However, the vertical frame 13 may be replaced with the vertical frame 13 on the side of the vertical sliding window. In this case, a holding member 16 as shown in FIG. 2 is required. The other configuration is almost the same as the first embodiment or the second embodiment.

According to the present embodiment, the cubic body 170 of the cubic 17 is also formed of an extruded profile unlike the frames 11, 12, and 13 formed of the heat-insulated profile. Although there is a difference from the blind 15, the effect of 1) described above can be obtained, and the heat insulating cover 1 provided on the
The effect of 2) can be similarly obtained by the joint structure of the ridge 71 and the cubic body 170. Further, the effects of 3) to 6) can be obtained by the same configuration as in the first embodiment.

Further, even if one of the left and right directions is a fitting window and the other is a sliding window, the upper pressing edge 117 is divided into two parts to the left and right, or the sealing material 12B for the lower frame 12 is provided on one side in the left and right direction. By providing the holding member 16 on the other side, the upper frame 11 and the lower frame 12 of the heat insulating sash 3 can be shared with the heat insulating sashes 1 and 2, and the other vertical frame 13 and the heat insulating covers 114 and 124 can be provided. Various members such as a heat insulating sash 1,2
Therefore, it is possible to reduce the manufacturing cost by sharing the members.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the window frame 10
Each of the frames 11, 12, 13 has a heat insulating cover 114, 12
Although 4,125,134 were provided (composite heat insulating frame), such a heat insulating cover may be provided according to the required dew-proofing performance and the like. 1 included.

The heat insulating sashes 1 and 2 of the first and second embodiments are vertically continuous windows having a blind 15 in a window frame 10, and the heat insulating sash 3 of the third embodiment has a Although the present invention is not limited to this, the present invention is applicable to a heat insulating sash having both a blind and a cubic.

Further, the form of each window portion formed as a vertical window or a horizontal window may be, for example, a horizontal window, a casement window, a sliding window, a single sliding window, in addition to a fitting window and a vertical window. etc,
Any form can be applied.

The heat-insulating cover according to the present invention is not limited to resin, but may be made of wood or a composition obtained by mixing wood powder with resin. The material and the like are arbitrary.

[0044]

As described above, according to the present invention,
There is an effect that the anti-dew performance can be reliably obtained and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view as viewed from an arrow II-II in FIG.

FIG. 3 is a cross-sectional view as viewed from an arrow III-III in FIG. 1;

FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.

FIG. 5 is a transverse sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

1, 2, 3 ... heat insulating sash, 10 ... window frame which is a frame, 11
... upper frame, 12 ... lower frame, 13 ... vertical frame, 15 ... blind as horizontal aggregate, 17 ... cubic as vertical aggregate, 111, 121, 13
1: indoor member, 112, 122, 132: outdoor member, 1
13, 123, 133 ... heat insulating member, 114, 124, 1
25, 134, 151, 171: heat insulating cover.

Claims (4)

[Claims] 1. A frame having four frames formed by an upper frame, a lower frame, and right and left vertical frames, and an aggregate of at least one of a vertical aggregate and a horizontal aggregate disposed in the frame. It is a heat insulating sash provided, wherein each frame of the frame body is provided with a metal indoor member, a metal outdoor member, and a heat insulating member connecting these indoor and outdoor members, and the aggregate is provided. Comprises a metal aggregate body and a heat-insulating cover for covering the indoor side surface of the aggregate body, and an end of the metal aggregate body is a metal outdoor member of the frame. Insulation sash that is joined to the. 2. The heat insulating sash according to claim 1, wherein the indoor member forming each frame of the frame body is provided with a heat insulating cover for covering an indoor side surface. 3. The heat insulating cover provided on the indoor member straddles the indoor member and the outdoor member, and covers the entire area of the indoor side surface of the indoor member and at least a part of the outdoor member on the indoor side. The heat insulating sash according to claim 2, which covers the sash. 4. The expected size of the aggregate is smaller than the expected size of the frame, and the indoor end face of the aggregate is located outside the indoor end face of the frame. Item 4. The heat insulating sash according to any one of Items 3.