JP6537126B1 - Window insulation structure - Google Patents

Abstract

An object of the present invention is to provide a window thermal insulation structure capable of keeping the room warm by preventing cold air flowing from the window side into the indoor side in winter.
SOLUTION: The heat insulating structure 1 of a window is provided with a convection preventing member 2 which does not transmit air or does not easily transmit air on the indoor side of the window 3, and this convection preventing member 2 is fixed to the window frame 4 for fixing the window. By providing, air on the window side of the convection blocking member 2 is prevented from flowing into the room side of the convection blocking member 2 or air on the room side of the convection blocking member 2 flows to the window side of the convection blocking member 2 Take measures to prevent that.
[Selected figure] Figure 4

Description

  The present invention relates to a thermal insulation structure of a window capable of keeping the room warm by preventing cold draft which flows from the window side to the indoor side during winter, so-called cold draft.

  In general, curtains, blinds, and a sunshade sheet are attached to windows as a sunshade, a cold protection, or a blindfold (for example, Patent Document 1). However, despite the fact that there is no gap near the window in winter, cold air flows from the window side to the indoor side, and even if the heating capacity is enhanced, the cold in the vicinity of the indoor floor can not be accommodated.

JP, 2009-197428, A

  When cold air flows from the window side to the indoor side in winter, even if the room is warmed by heating, the air flowing from the window to the indoor side is cold, especially very cold around the floor of the room. It is a major factor that the air near the ceiling of the room moves toward the window, is cooled by the window, and flows into the room. Even if there are curtains and blinds, the air flows into the window side through the surroundings of the curtain or the body such as the curtain, so the coldness is not eliminated.

  Then, this invention aims at providing the heat insulation structure of the window which can keep room indoors by preventing the cold wind which flows in into a room side from the window side in winter.

  The heat insulating structure of the window of the present invention comprises a convection blocking member which does not transmit air or does not easily permeate air on the indoor side of the window, and the convection blocking member is in close contact with the window frame for fixing the window. Therefore, air on the window side of the convection blocking member is prevented from flowing into the room side of the convection blocking member, or air on the room side of the convection blocking member is prevented from flowing to the window side of the convection blocking member It is characterized by

  In the heat insulating structure for a window according to the present invention, the convection blocking member is formed of a cloth sheet, a resin sheet, or a plastic plate, and provided on the entire circumference of the indoor side of the window frame or the inner surface of the side plate of the window frame It is characterized in that air on the indoor side of the convection blocking member is prevented from flowing into the window side of the convection blocking member.

  The heat insulating structure for a window according to the present invention is characterized in that the convection preventing member is constituted by a window covering member and is provided by a close contact member at the bottom of the window frame and at the lower side of the side plate of the window frame.

  In the heat insulating structure for a window according to the present invention, the convection preventing member is formed of a plastic plate or the like having a height of about 15 cm to 30 cm, the bottom plate of the window frame, and the inner side of the side plate of the window frame, or the bottom plate of the window frame and the window frame The air on the window side rises while absorbing heat from the convection blocking member by blocking the room from the lower region of the indoor side of the window, and the convection from the ceiling side of the room It is characterized in that it is attracted and convection is caused between the window and the convection blocking member to prevent air on the window side from flowing into the room side more than the convection blocking member.

In the heat insulating structure for a window according to the present invention, the convection preventing member is made of a cloth sheet or resin sheet having a height of about 15 cm to 30 cm, and the bottom plate of the window frame and the inner side of the side plate of the window frame or the bottom plate of the window frame The air on the window side rises while absorbing heat from the convection blocking member by close contact with the side of the side plate of the window frame and blocking the room from the lower region of the room on the indoor side from the ceiling side of the room. It is characterized by being attracted to convection, causing convection between the window and the convection blocking member, and preventing air on the window side from flowing into the room side more than the convection blocking member.
In this case, the window frame is preferably provided with a fixing member, and the convection blocking member is preferably fixed to the window frame via the fixing member.

  The heat insulating structure of the window according to the present invention is characterized in that an aluminum vapor-deposited sheet or aluminum foil having a high reflectance to radiant heat, an infrared reflective material or the like is provided on one side or both sides of the convection blocking member.

  The heat insulating structure for a window according to the present invention includes a convection blocking member on the indoor side of the window, and the convection blocking member is in close contact with the window frame. for that reason. Air on the window side of the convection blocking member flows into the room side of the convection blocking member, and air on the room side of the convection blocking member flows into the window side of the convection blocking member. In this way, the room can be kept warm without feeling the cold even if it is near the window. Furthermore, it is not necessary to overheat the room excessively by heating.

Further, the heat insulating structure of the window of the present invention is provided with a convection blocking member formed of a cloth sheet, a resin sheet, or a plastic plate on the indoor side of the window, and the convection blocking member is the bottom plate of the window frame of the window, The inside of the side plate of the window frame or the bottom plate of the window frame and the side of the side plate of the window frame are in close contact with each other to block the indoor lower region of the window from the room. Therefore, the air around the convection blocking member is prevented from flowing into the room. In addition, air on the window side rises while absorbing heat from the convection blocking member, and is drawn to convection from the ceiling side of the room, thereby causing convection between the window and the convection blocking member. Therefore, the air on the window side is prevented from flowing into the room side more than the convection blocking member.
Therefore, so-called cold drafts can be prevented, the user can feel the cold even near the window, the air flow in the room is eased, and a warm environment can be created without excessively warming the room.

  In the heat insulating structure for a window according to the present invention, the convection blocking member may be provided with an aluminum vapor-deposited sheet or aluminum foil having a high reflectance to radiant heat, an infrared reflecting material, or the like. By providing an aluminum vapor deposition sheet or the like, for example, radiant heat on the indoor side can be reflected to the indoor side to make the room warmer.

  In the heat insulating structure of a window according to the present invention, a fixing member is provided on the window frame, and the convection blocking member is fixed to the window frame via the fixing member. Then, the convection blocking member can be easily attached and removed. Therefore, it is possible to provide a thermal insulation structure of a window that can prevent cold draft easily and inexpensively.

It is a figure for demonstrating the movement of the convective heat in window vicinity of the room of winter. It is sectional drawing for demonstrating the heat insulation structure of the window which concerns on 1st embodiment of this invention. It is sectional drawing for demonstrating the heat insulation structure of the window which concerns on 2nd embodiment of this invention. It is sectional drawing for demonstrating the heat insulation structure of the window which concerns on 3rd embodiment of this invention. It is sectional drawing for demonstrating the heat insulation structure of the window which concerns on the other example of 3rd embodiment of this invention. It is sectional drawing for demonstrating the heat insulation structure of the window which concerns on the other example of 3rd embodiment of this invention. It is a figure for demonstrating the fixing member of the heat insulation structure of the window which concerns on the other example of 3rd embodiment of this invention. (A) Top view, (b) Front view It is sectional drawing for demonstrating the effect of the heat insulation structure of the window which concerns on the other example of 3rd embodiment of this invention.

  In winter, tightening the curtains and blinds warms the entire room, but often it feels cold in the bed, sofa or floor near the windows. According to reports of many engines in the United States, the amount of heat passing through the wall of a building is said to be 65 to 80% of radiant heat, 5 to 7% of conduction heat, and 15 to 28% of convective heat. Therefore, in order to maintain a warm indoor environment in winter, it is not enough to just block the radiation of radiant heat from the indoor side to the outdoor side, and it is very important to block the flow of air carrying convective heat. . In particular, no matter how warm the room is heated by heating, the cold air flowing into the room from the window has a large effect of so-called cold draft. Therefore, if this cold draft can be prevented, the indoor environment can be dramatically improved, radiant heat and convective heat can be simultaneously prevented, a warm indoor environment can be created, and a warm indoor environment can be maintained.

Next, cold draft will be described with reference to FIG.
In winter, the heat in the room rises from the floor surface 101 to the vicinity of the ceiling 102 as shown in FIG. 1 (arrow A). Then, it moves as convection heat from the indoor side toward the window side through the gap between the curtain 103 and the curtain rail 104 (arrow B). When the convective heat reaches the window 105, the heat is absorbed by the window 105, the density increases, and the density drops along the surface of the window 105 (arrow C). Then, the cooled convective heat flows into the room side from the lower end of the window frame 106 which fixes the window 105 (arrow D). That is, the air in the room moves to the floor surface 101, the ceiling 102, the window 105, and again to the floor surface 101, and moves in the room while generating a large flow, whereby heat on the indoor side is released to the outside. In winter, to warm the room by heating and to feel cold, in addition to the radiation heat being radiated directly from the room to the window 105, the influence of this convection (cold draft) is large.

The cold draft is not a draft and is generated when the room heat is cooled, and this phenomenon can not be suppressed even if the gap in the window is lost. In order to prevent this phenomenon, it is important to raise the surface temperature of the window, so generally, providing a double window or sticking a film to the window glass is performed.
However, although this phenomenon can be reduced, it can not be completely prevented.

  The heat insulating structure of the window according to the present invention is a system for preventing the convection heat from flowing into the room side. This system enhances the heating effect of the room by adjusting the convective heat from the room to the window on the basis of the heat transfer principle that "the heat moves from the hot side to the cold side".

The heat insulating structure of a window according to the present invention includes a convection blocking member which does not transmit air or hardly transmits air on the indoor side of the window, and by bringing the convection blocking member into close contact with the window frame, the window side of the convection blocking member This prevents the air from flowing into the room more than the convection blocking member, or prevents the air on the room side from the convection blocking member from flowing into the window side of the convection blocking member.
Hereinafter, embodiments for carrying out the present invention will be described.

First Embodiment
As the heat insulation structure 1 of the window which concerns on this embodiment is shown in FIG. 2, the convection prevention member 2 is comprised by the cloth sheet, the resin sheet, or a plastic board etc. As shown in FIG. Then, the convection blocking member 2 is provided in close contact with the entire periphery of the side surface 4A facing the room side of the window frame 4 for fixing the window 3 or the inner surface 4B of the window frame 4.

The convection blocking member 2 is a sheet or a plastic plate made of a cloth or resin which does not transmit air or does not easily transmit air, or the convection blocking member 2 covers the entire surface of the window frame 4 and It seals, and it is set as the structure which prevents that the air by the side of a room moves to the window side (inflow) also from the circumference | surroundings of the convection prevention member 2. FIG. The material of the convection blocking member 2 is not particularly limited, but a material which does not transmit air or does not easily transmit air and which has high thermal insulation is preferable.
Further, when the convection blocking member 2 is used in close contact with the end face of the window frame 4, the sealing property is important, so a flat material that easily adheres to the window frame 4 is preferable. On the other hand, when the convection blocking member 2 is used in close contact with the inner side surface 4B of the window frame 4, it is preferable to use a frame made of resin or the like for sealing.

  A heat shield 5 is provided on the indoor side of the convection blocking member 2. The heat shield 5 may be provided at least on the indoor side of the convection blocking member 2 and may be provided on the surface on the window side. For the heat shield 5, for example, a material having a high reflectance (98%) to radiant heat such as aluminum foil is used. In addition, a material having high reflectance to radiant heat such as aluminum foil can be heat-welded to the surface of the convection blocking member 2.

  In order to improve the adhesion of the convection blocking member 2 to the window frame 4, there is also a method of pressing from outside with a pressing roll, a pressing device or the like. Since the window frame 4 has various shapes, a method having as high sealing performance as possible should be selected.

Next, the effect of the heat insulation structure 1 of the window which concerns on this embodiment is demonstrated.
In the heat insulating structure 1 of the window according to the present embodiment, the warm air in the vicinity of the ceiling 7 on the indoor side is prevented from flowing into the window by sealing the window frame 4 by the convection blocking member 2. Furthermore, since the convection blocking member 2 is made of a material that does not transmit air or that does not easily permeate air, air on the indoor side is also prevented from flowing into the window side from the surface of the convection blocking member 2.
Therefore, the room can be kept warm without feeling cold even if it is near the window 3. Keeping the room warm is effective in preventing cerebral hemorrhage and coldness.

  Furthermore, since the convection blocking member 2 does not transmit air, convection from the indoor side to the window side descends on the surface of the convection blocking member 2 and flows near the floor surface 6 (arrow E). At this time, since the convection blocking member 2 is not as cold as the window 3, the convection drops while maintaining the warm temperature. Therefore, a person in the room can keep the room warm without feeling cold, and there is no need to overheat by heating, which is an energy saving measure.

  The heat insulating structure 1 of the window according to the present embodiment is only required to attach the convection blocking member 2 to the window frame 4, so that the construction is easy and the cost is low.

Further, by providing the heat shield 5 on the indoor surface of the convection blocking member 2, the radiation heat on the indoor side is reflected to the indoor side by the heat shield 5 (arrow F). Then, the temperature of the convection blocking member 2 becomes close to the temperature of the room, and the temperature difference between the vicinity of the ceiling 7 and the floor surface 6 becomes small. As described above, when the temperature difference between the vicinity of the ceiling 7 and the vicinity of the floor surface 6 of the room decreases, the velocity of convection on the room side decreases and the indoor environment becomes warm. In addition, since the reflected radiation heat has a large amount of heat, the room becomes a very warm environment.
On the other hand, since air from the indoor side does not flow between the window 3 and the convection blocking member 2, no heat is supplied, and slow convection occurs in the space between the window 3 and the convection blocking member 2. Because of the degree, dew condensation on the window 3 is also eliminated.

  In the heat insulating structure 1 according to the present embodiment, the space between the window 3 and the convection blocking member 2 also serves as an air thermal insulating material by bringing the convection blocking member 2 into close contact with the window frame 4 to thermally insulate the room from the outside. It can also enhance sex.

Also, generally, the window frame 4 is mostly made of wood and is highly thermally insulating. Therefore, condensation does not occur due to the window frame 4 and the convection blocking member 2 coming into close contact with each other.
Between the window 4 and the convection blocking member 2, cooling is caused along the window 3 and falling convection occurs, but the amount of heat supplied to this space is small due to the effect of the convection blocking member 2. The velocity of convection also decreases, and as a result, the velocity of convection also decreases.
Although radiation heat is also radiated from the convection blocking member 2 to the window 3, the convection blocking member 2 is supplied to this space by providing the heat shield 5 which is a material having a high reflectance to radiation heat such as aluminum foil. The amount of heat is further reduced and becomes very small.

Second Embodiment
Even when a curtain or a blind screen is provided in the room, the convection caused by the cold draft is generated from the room side to the window side through the periphery of the curtain or the like and the clearance of the curtain or the like.

As the heat insulation structure 1 of the window which concerns on this embodiment is shown in FIG. 3, the convection prevention member 2 is comprised by the window coating member. The window covering member (convection preventing member 2) is configured to be impermeable to air (not easily permeable to air). The window covering member is brought into close contact with a bottom plate 4C of the window frame 4 (a member constituting the lower portion of the window frame 4) and the lower portion of the side surface 4A of the side plate (not shown) of the window frame 4 by an adhesion member (not shown). .
In the present embodiment, the window covering member means, for example, a curtain or a blind screen, and in the present embodiment, an example in which the blind screen 8 is used as the window covering member will be described.
The blind screen 8 is provided with a heat shield 5 on the surface on the indoor side. And this blind screen 8 is accommodated in the curtain box 10, and moving the roll screen main axis | shaft 11 moves up and down. At this time, the blind screen 8 is moved up and down using the upper pressing roll 12 and the lower pressing roll 13. The blind screen 8 is brought into close contact with the window frame 4 through the contact member after being moved downward. For example, a surface fastener or double-sided tape is used as the adhesion member.

The effect of the heat insulation structure 1 of the window which concerns on this embodiment is demonstrated.
The heat insulating structure 1 of the window according to the present embodiment can prevent air on the window side of the convection blocking member 2 (window covering member) from flowing into the room side more than the window covering member. Such a configuration can eliminate the convection supplied to the window through the ceiling and create an indoor environment in which a cold draft does not occur.
Moreover, the heat insulation structure 1 of the window according to the present embodiment reduces the construction cost as in the heat insulation structure 1 of the window according to the first embodiment, is effective for energy saving measures, and prevents the occurrence of condensation of the window 3 It also produces effects such as

Third Embodiment
In the heat insulating structure 1 for a window according to the present embodiment, the convection blocking member 2 is formed of a cloth sheet, a resin sheet, a plastic plate or the like. The convection blocking member 2 is made of one that does not transmit air (or that does not easily transmit air).

First, the case where the convection blocking member 2 is formed of a plastic plate or the like will be described.
As shown in FIG. 4, for example, a screen made of plastic cardboard can be used as the convection blocking member 2.
The convection blocking member 2 is in close contact with the bottom plate 4C of the window frame 4 and the inner side of the side plate of the window frame 4, or the side plate 4C of the window frame 4 facing the room side of the bottom plate 4C and side plate (not shown) The blocking member 2 completely shuts off (seals) the window side and the indoor side in a predetermined region (lower region) below the window 3. The convection blocking member 2 is attached at a position several centimeters away from the window 3 and is provided on the window side (inside) of the indoor plane of the window frame 4 or the indoor plane of the window frame 4. Moreover, when the curtain 9 and the blind are provided, the convection prevention member 2 is attached to the window side rather than the curtain 9 and the blind.
The height of the convection blocking member 2 is designed to be about 15 cm to 30 cm to be higher as it is effective, but to avoid being obstructed when looking at the outdoors or going out outdoors during the daytime Is preferred. The convection blocking member 2 is fixed to the window frame 4 so as to be easily removable from the window frame 4.

The effect of the heat insulation structure 1 of the window which concerns on this embodiment is demonstrated.
The heat insulating structure 1 of the window according to the present embodiment prevents air on the window side of the convection blocking member 2 from flowing into the room side of the convection blocking member 2. Specifically, the convection which descends while being cooled along the window 3 reaches near the bottom plate 4 C of the window frame 4. Since the window side and the indoor side are completely shut off by the convection blocking member 2, it is possible to prevent the air which has been lowered while being cooled from flowing into the indoor side. Then, the cooled air comes into contact with the convection blocking member 2 to absorb heat, thereby increasing the expansion buoyancy, forming an ascending air flow and hardly flowing into the indoor side. Then, by being attracted to the convection from the ceiling 7 side of the room, the convection is caused between the window 3 and the convection blocking member 2 and the rising air is prevented from flowing into the room side. Therefore, a cold draft can be prevented, the flow of air in the room can be mitigated, and a warm environment can be created without excessively warming the room.

  Since the temperature of the rising air is increased by absorbing heat from the convection blocking member 2, the room is not cooled so much even when the air flows into the room, and the room is cold. do not feel. Therefore, there is no need to overheat the room by heating.

  In the heat insulating structure 1 of the window of this embodiment, as described in the above embodiment, the convection moving the surface of the window 3 in the direction of the bottom plate 4C of the window frame 4 is the same. The air in contact with the convective blocking member 2 gains heat, thereby increasing expansion buoyancy and rising convection without flowing into the room side, and this convection changes its direction again on the window frame 4 at the top of the window frame 4. That is, a convective vortex that rotates on the indoor side of the window 3 is generated, and it is as if an air curtain was formed on the indoor side of the window 3. As a result, the convective heat flowing into the room from around the bottom plate 4C of the window frame 4 disappears, the room temperature rises, and a warm indoor environment is created.

  For the above reasons, as in the case of the above embodiment, in addition to the fact that the room can be kept warm without feeling cold even in a place close to the window 3, there is no need to overheat the room by heating. , Energy saving measures.

In the heat insulation structure 1 of the present embodiment, as shown in FIG. 5, the heat shield 5 can be provided on the entire area of the front surface 2A which is the indoor side surface of the convection blocking member 2. As the heat shield 5, an aluminum vapor deposition sheet having high reflectance to radiant heat, an aluminum foil, an infrared reflection material, or the like can be used. By providing the heat shield 5 in the whole area of the front surface 2A, radiant heat from the indoor side is reflected by the heat shield 5, and the warmth of the room can be maintained.
The heat shield 5 can also be provided on the entire area of the back surface 2B which is the window side surface of the convection blocking member 2. By providing the heat shield 5 on the entire back surface 2B, it is possible to cut ultraviolet light, and it is possible to prevent the convection blocking member 2 from being deteriorated by sunlight inserted from the window side.

Next, the case where the convection blocking member 2 is made of a resin sheet will be described.
The convection blocking member 2 uses, for example, a transparent sheet with a pattern or a pattern.
The convection blocking member 2 is provided in close contact with the window frame 4 as shown in FIG. The convection blocking member 2 is provided on the window side (inner side) than the flat surface on the indoor side of the window frame 4 or the flat surface on the indoor side of the window frame 4, and the lower region of the indoor side of the window and the room are blocked. At this time, the convection blocking member 2 plays a role of a barrier.

The convection blocking member 2 can be brought into close contact with the window frame 4 via the fixing member 14 provided on the window frame 4 as shown in FIG. Also in this case, the convection blocking member 2 is provided closer to the window than the flat surface of the window frame 4 on the indoor side or the flat surface of the window frame 4 on the indoor side. The fixing member 14 is provided in close contact so that air does not leak from the periphery of the convection blocking member 2.
As shown in FIG. 7A, the fixing member 14 is an L-shaped member, and the double-sided tape 15 is on the surface of the fixing member 14 in contact with the window frame 4 and the surface fastener 16 is on the indoor surface. Each is provided. The fixing member 14 is attached to the inner side surface of the side plate 4D on both sides of the window frame 4 via the double-sided tape 15. Then, as shown in FIG. 7B, the surface fasteners 16 of the fixing member 14 are exposed to the indoor side. The convection blocking member 2 is attached to the fixing member 14 through the hook-and-loop fastener 16 to completely block the lower area (lower area) of the window and the indoor side.
In addition, in FIG.6 and FIG.7, description of the curtain 9 and a blind is abbreviate | omitted.

  When the resin sheet-like convection blocking member 2 is closely attached to the lower side of the window frame 4 so that the air does not leak, as shown in FIG. 8, the air which is lowered while being cooled may flow into the indoor side. It is blocked. Then, the cooled air comes into contact with the convection blocking member 2 to absorb heat, thereby increasing the expansion buoyancy, becoming an ascending air flow, and being attracted to the convection from the ceiling 7 side of the room, the window 3 and the convection are generated. Convection is caused between the blocking member 2 to prevent rising air from flowing into the room. Therefore, a cold draft can be reliably prevented, the flow of air in the room can be mitigated, and a warm environment can be created without excessively warming the room.

The convection blocking member 2 can be easily attached to the fixing member 14 and easily removed from the fixing member 14 by using the surface fastener 16, so for example, by removing the convection blocking member 2 during the daytime ,It does not get in the way. In addition, since the convection preventing member 2 is only attached to or removed from the window frame 4, the heat insulating structure 1 of the window of this embodiment can prevent cold draft easily and inexpensively.
Furthermore, since the convection blocking member 2 is a transparent sheet having a pattern or a pattern, the outside of the window 3 can be seen with the convection blocking member 2 attached, and the appearance on the indoor side is not impaired. .

  Next, by providing the convection blocking member 2, changes in air flow (convection) generated on the window side and the indoor side were examined (Test 1 to Test 3).

[Test 1]
A convection blocking plate (convection blocking member) was installed horizontally at a position about 10 cm below the bottom plate of the window frame so as to project to the indoor side. Then, 10 candles with a length of 4 cm on which light was lit were placed at intervals of 15 cm on the convection blocking plate. A vinyl cloth was attached to the entire circumference of the side of the window frame. The inner dimension of the side plate of the window frame was 176 cm, and the height of the window was 140 cm. The outdoor temperature was 0.7 ° C., and the room temperature was 21.2 ° C. In this state, the shaking of the candle flame and the temperature were observed. In Test 1 to Test 3, a plastic corrugated board was used as the convection blocking plate (convection blocking member).

[Result 1]
Even after a few minutes, all candle flames rose almost straight and hardly shaken.

[Discussion 1]
B) It was found that no convection was generated from the window side into the room.
B) It was found that the flow velocity of the descending air was very slow, as little convection was observed to descend the surface of the vinyl cloth from the ceiling to the floor.

[Test 2]
A convection blocking plate (convection blocking member) was installed at a position about 10 cm below the bottom plate of the window frame so as to project to the indoor side. Then, ten candles with a length of 4 cm were lit were placed on the plate at intervals of 15 cm. A vinyl cloth was put on the entire circumference of the end face of the window frame. Then, about 20 cm in the upper part and about 10 cm in the lower part were cut out in order to eliminate the sealed space between the indoor side and the window side. In addition, thermo recorder thermometers were installed at two points 8 cm below the top of the window frame and 5 cm above the bottom.
The inner dimension of the side plate of the window frame is 176 cm and the height is 140 cm. The outdoor temperature was 0.8 ° C., and the room temperature was 21.0 ° C. In this state, the shaking of the candle flame and the temperature were observed.

[Result 2]
The flames of all the candles shook, and they continued to tilt greatly towards the room. Further, the temperature of the top plate portion of the window frame was 21.2 ° C., and the temperature of the upper portion of the bottom plate was 14.4 ° C.

[Discussion 2]
B) It can be seen that large convection flowing from the top to the bottom has occurred along the window (window glass). If this large convection is prevented, the warmth of the room is considered to be significantly improved.
B) It was found that by lowering the glass surface of the window with a height of 140 cm when the outside temperature was 0.8 ° C. and the room temperature was 21.2 ° C., the temperature dropped by 6.8 ° C.

[Test 3]
A convection blocking plate (convection blocking member) is provided below the window, and a curtain is provided on the outside of the window with a gap of about 1 cm. A convection blocking plate was installed at a position about 10 cm below the bottom plate of the window frame so as to project to the indoor side. Then, on this plate, a candle with a length of 4 cm was placed, one each at a distance of 30 cm from the center of the window, for a total of two.
A vinyl cloth was attached to the entire circumference of the end face of the window frame, and the top about 20 cm and the bottom about 10 cm were cut out. 20 cm in height and 88 cm in width made of plastic corrugated board, the convection prevention plate with heat insulating material stuck only on the indoor side, in close contact with the bottom plate and left side plate of the window frame Fixed. Also, the right side was sealed with tape so that the window was in close contact. Therefore, this space was open only at the top and sealed around.
Then, thermo-recorder thermometers were installed at one location 8 cm below the top of the window frame and at two locations 5 cm above and below the bottom plate, and the temperature of the space was measured.
The inner dimension of the side plate of the window frame is 176 cm and the height is 140 cm. The air conditioner was always operated by automatic operation at 24 ° C. In this state, the shake of the candle and the change of each thermometer were measured.

[Result 3]
B) When a convection blocking plate was provided, the candle flame extended straight up from beginning to end, but without the convection blocking plate, it was always greatly inclined to the indoor side.
B) The temperature at the top of the window, the temperature at the window side of the convection blocking plate (below the heat shield window), the temperature at the bottom of the window without the convection blocking plate, and the temperature outside the room (outside temperature) were measured. The respective temperature measurement results are shown in Tables 1 and 2.

[Discussion 3]
B) If a convection blocking plate is provided, it is considered that the candle flame hardly moves and there is no influence of convection from the window. On the other hand, when the convection preventing plate was not provided, it was clearly understood that the flame was greatly inclined to the indoor side and the flow of air (air) was generated. From this result, it can be seen that the effect of providing the convection blocking plate is great.
B) If the convection prevention plate is not provided, the heat of about 25 ° C near the ceiling is always cooled by 8 ° C to 9 ° C and flows into the room from 17 ° C to 18 ° C, so the room temperature is deprived more and more It can be seen that
C) On the other hand, by providing a convection blocking plate, the heat of about 25 ° C near the ceiling decreases by 15 ° C, but the space between the convection blocking plate and the window (window glass) becomes a stagnant space of low temperature air, and eventually the window It is released to the outside through (window glass). Therefore, it can be seen that the air cooled by the window does not flow into the room, and the room is kept warm.
D) The temperatures at 2:30 and 5 o'clock have dropped significantly twice. This is because radiation heat is always radiated from the thermometer terminal attached to the window to the window (window glass), and even if the air conditioner stops and the convective heat supply to the thermometer terminal decreases, the thermometer Since radiation from the terminal to the window glass surface continues, it is considered that there was a rapid temperature drop.
E) At the window, I felt that the wind was blowing, but by completely sealing the window frame, even if I was in the bed or sofa near the window, it was like before the convective plate was provided I did not feel cold.

As mentioned above, although this embodiment was described, it is possible not only to deviate from the gist of the present invention, but to select the configuration described in the above embodiment or to appropriately change it to another configuration. .
In this embodiment, an example in which an aluminum vapor-deposited sheet or aluminum foil having high reflectance to radiant heat is provided on one side or both sides of the convection preventing member 2 is shown. It is also possible to provide an infrared reflective material or the like.
In the third embodiment, the height of the convection blocking member 2 is about 15 cm to 30 cm, but the height of the convection blocking member 2 can be determined according to the height of the window frame.

DESCRIPTION OF SYMBOLS 1 Thermal insulation structure 2 window Arresting member 2A Front surface 2B Back surface 3 Window 4 Window frame 4A Side surface 4B Inner side 4C Bottom plate 4D Side plate 5 Heat shield 6 Floor 7 Ceiling 8 Blind screen 9 Curtain 10 Curtain 10 roll Screen spindle 12 Upper holding roll 13 Lower holding roll 14 Fixing member 15 Double-sided tape 16 Hook and loop fastener 101 Floor 102 Ceiling 103 Curtain 104 Curtain rail 105 Window 106 Window frame

Claims (1)

The room side of the window is provided with a convection blocking member which does not transmit air or does not easily permeate air, and prevents air on the window side of the convection blocking member from flowing into the room side of the convection blocking member, or It is the heat insulation structure of the window which prevents air on the indoor side of the convection blocking member from flowing into the window side of the convection blocking member ,
A first fixing portion fixed to the inner side surface of the side plate of the window frame , the convection preventing member composed of a cloth sheet or resin sheet having a height of about 15 cm to 30 cm, the window frame fixing the window; An L-shaped fixed member having a second fixed portion connected to one fixed portion and to which the convection blocking member is fixed, and disposed on the inner side of the window frame and on the inner side surfaces of the side plates on both sides of the window frame It adheres through a member , and is fixed to the window side the same as the flat surface on the indoor side of the window frame, or the flat surface on the indoor side of the window frame, and blocks only the lower region on the indoor side of the window from the indoor By doing
The air on the window side rises while absorbing heat from the convection blocking member, and is drawn to convection from the ceiling side of the room, causing convection between the window and the convection blocking member, and Prevent air from flowing into the room more than the convection blocking member ,
Thermal insulation structure of the window characterized by.