WO2009118930A1

WO2009118930A1 - Panel block

Info

Publication number: WO2009118930A1
Application number: PCT/JP2008/067035
Authority: WO
Inventors: 村岡仁美; 中田泰詩; 五藤昌彦; 末永雅裕
Original assignee: 積水化学工業株式会社
Priority date: 2008-03-28
Filing date: 2008-09-19
Publication date: 2009-10-01
Also published as: EP2267234A1; JPWO2009118930A1

Abstract

A panel block, when installed in an opening of a building, exhibiting a sufficient daylighting property as well as a high heat insulating property comparable to that of a wall material. The invention relates to a panel block to be installed in an opening of a building which is configured such that at least two daylighting-heat insulating material members are disposed between two pieces of hard resin or glass plates, the at least two daylighting-heat insulating material members being disposed facing each other with a 1 to 12mm-thick gas layer interposed therebetween, wherein each of the daylighting-heat insulating material members has a structure in which a plurality of base films are respectively facing each other, with a 1 to 5mm-thick gas layers interposed therebetween, and a total thickness of the panel block as a whole is 100mm or over, and a visible light transmittance of the whole panel block is 15% or more.

Description

Panel block

The present invention relates to a panel block that exhibits sufficient daylighting properties by being installed in an opening of a building, and that can exhibit high heat insulation similar to a wall material.

Sufficient lighting is one of the conditions for comfortable housing. In order to achieve high daylighting performance, it is preferable to increase the size of the opening (window) as much as possible. However, the size of the opening in a conventional building is limited mainly from the viewpoint of the strength of the frame and the heat insulation.
Regarding the strength of the frame, recently, a method has been proposed in which the strength of the frame is maintained by a pillar, such as a steel frame ramen structure, and the wall does not contribute to strength maintenance. If such a structure is adopted, a large opening can be provided without impairing the strength of the housing.

On the other hand, there is currently no sufficient solution in terms of heat insulation.
In recent years, from the viewpoint of energy saving, attempts have been made to achieve a high heat insulation effect with the outside world and to increase the efficiency of air conditioning to the limit. In order to increase the efficiency of air conditioning, it is necessary to perform independent air conditioning for each room. Various window materials having high heat insulating properties have been proposed for such purposes (for example, Patent Document 1). However, with conventional window materials, it is difficult to achieve a high thermal insulation effect compared to wall materials, etc., and according to the “Energy Saving Technology Strategy Report” (June 12, 2002, Ministry of Economy, Trade and Industry) It is said that 45% of energy is lost from openings such as windows.
There has been a demand for a window material that has sufficient daylighting properties and has a high heat insulating property (thermal penetration rate of 0.4 to 0.5 kW / m ² or less) similar to a wall material.
Japanese Patent Laid-Open No. 2003-026453

An object of this invention is to provide the panel block which exhibits sufficient lighting property by installing in the opening part of a building in view of the said present condition, and can exhibit high heat insulation like a wall material.

A first aspect of the present invention is a panel block installed in an opening of a building, wherein at least two or more daylight insulating materials sandwich a gas layer having a thickness of 1 to 17 mm between two hard resin plates or glass plates. The lighting insulation material has a structure in which a plurality of base film films face each other with a gas layer having a thickness of 0.4 mm to 17 mm interposed therebetween, The panel block has a thickness of 70 mm or more and a visible light transmittance of 15% or more of the entire panel block.
A second aspect of the present invention is a panel block installed in an opening of a building, wherein at least two or more daylight insulation materials are provided with a gas layer having a thickness of 1 to 17 mm on one hard resin plate or glass plate. The lighting heat insulating material has a structure in which a plurality of substrate films are opposed to each other with a gas layer having a thickness of 0.4 mm to 17 mm interposed therebetween, The panel block has a thickness of 70 mm or more and a visible light transmittance of 15% or more of the entire panel block.
The present invention is described in detail below.

The present inventors have found that a light insulating heat insulating material having a structure in which a plurality of resin films are opposed to each other with an air layer having a thickness of 100 μm to 3 mm sandwiched therebetween can exhibit high heat insulating properties despite being extremely light, An application was filed (Japanese Patent Laid-Open No. 2006-291608). However, the wall material of a general building has a thickness of 100 mm or more. Even if the daylighting heat insulating material described in JP-A-2006-291608 is merely 100 mm or more in thickness, although high heat insulating properties can be obtained, the daylighting properties are almost lost.
The present inventors have arranged at least two or more daylight insulation materials facing each other with a gas layer having a thickness of 1 to 17 mm, and sandwiched between two hard resin plates or glass plates (first block). 1 of the present invention), or a panel block (second present invention) in which this is arranged with respect to one hard resin plate or glass plate, has high daylighting properties, and has high heat insulation similar to a wall material. As a result, the present invention has been completed.

The panel block of the present invention (hereinafter, the matters common to the first and second aspects of the present invention are also simply referred to as “the present invention”) includes at least one hard resin plate or glass plate. And at least two or more daylight insulation materials.
The hard resin plate or glass plate gives necessary and sufficient strength to the panel block of the present invention.
It does not specifically limit as said hard resin board, For example, a polycarbonate board, an acrylic board, etc. are mentioned.
It does not specifically limit as said glass plate, For example, what was conventionally used for buildings, such as a float glass plate, a type | mold plate glass plate, a hazy glass plate, or those tempered glass, can be used.

As the above-mentioned hard resin plate or glass plate, a plate having a high haze although the surface is subjected to processing such as embossing and has a high total light transmittance can be used. By using such a hard resin plate or glass plate, the reflection on the surface, the appearance of the inner member, etc. are alleviated while taking in sunlight, and the design is good.

When only one hard resin plate or glass plate is used (second invention of the present application), it is preferable to dispose the hard resin plate or glass plate indoors in consideration of impact resistance and durability.

The preferable lower limit of the thickness of the hard resin plate or glass plate is 30 μm, and the preferable upper limit is 10 mm. When the thickness of the hard resin plate or the glass plate is less than 30 μm, the strength of the obtained panel block is lowered and the handleability is inferior. When the thickness exceeds 10 mm, the obtained panel block becomes heavy and the handleability is increased. May be inferior. The more preferable lower limit of the thickness of the hard resin plate or the glass plate is 50 μm, and the more preferable upper limit is 5 mm.

The daylighting heat insulating material has a structure in which a plurality of substrate films are opposed to each other with a gas layer having a thickness of 0.4 to 17 mm interposed therebetween.
The daylighting heat insulating material may have a structure in which a gas layer is sandwiched between two base film, but as long as the visible light transmittance described later is satisfied, it is between three or more base films. The thing of the structure by which the gas layer was clamped is preferable. The lighting heat insulating material having a plurality of gas layers can exhibit a high heat insulating effect. Moreover, the temperature difference between base films is small, and the occurrence of condensation can be suppressed. This reduces or eliminates the amount of desiccant that was previously required when installing frame materials used in edge processing of face materials such as glass and heat insulating materials used in conventional openings. Can do.
However, as a whole panel block, it is preferable that the sum total of the base film used for each lighting insulation material is 30 or less. If it exceeds 30, the visible light transmittance described later may not be satisfied.

The present inventors have found that when the thickness of the gas layer of the daylighting heat insulating material is within a specific range, a particularly high heat insulating effect can be exhibited. The heat transmissivity is related to the thickness of the gas layer, the total thickness, and the number of layers.
Furthermore, if the gas layer spacing is such that convection does not occur under a certain total thickness, if the total thickness of the gas layer in the total thickness is greater than or equal to a certain level, the Stefan-Boltzmann increases with the number of layers. Due to the effect of reducing radiant heat based on this law, the heat transmissivity shows a minimum value. Furthermore, if it is the structure which satisfy | fills this, a heat transmissivity will become small with total thickness increase.
That is, it is particularly high when the lower limit of the gas layer thickness of each daylighting insulating material is 0.4 mm, the upper limit is 17 mm, and the number of layers of the base film as the whole panel block is 10 to 29. It was found that a heat insulating effect can be obtained. At this time, the panel block of the present invention can exhibit high heat insulation like a wall while maintaining a visible light transmittance of 15% or more. More preferably, the lower limit of the thickness of the gas layer of the daylighting heat insulating material is 0.9 mm, the upper limit is 15 mm, and the number of layers of the base film as the whole panel block is 15 to 25 layers.

The gas layer may seal the periphery. With such a structure, internal condensation can be prevented. The gas layer may communicate with another gas layer through the base film, or may have a structure in which gas can move between the gas layers. That is, a non-woven fabric, a perforated film of about 5 mmφ can be used as a substrate.

The gas layer is preferably divided into a plurality of cells. By dividing the gas layer into a plurality of cells, it is possible to increase the strength of the daylighting heat insulating material as a whole. In the present invention, the resin spacer plays the role of this cell division. Preferred lower limit is 4 cm ² in size for each cell of the gas layer, the upper limit thereof is preferably 1800 cm ^2. When it is less than 4 cm ² , the visible light insulating material obtained may have inferior visible light transmittance or may have poor heat insulation properties. When it exceeds 1800 cm ² , the strength of the obtained lighting heat insulating material may be inferior. The preferable lower limit of the size of each cell of the gas layer is 25 cm ² , and the preferable upper limit is 1000 cm ² .

It does not specifically limit as gas which comprises the said gas layer, For example, air, a carbon dioxide, etc. are mentioned.
Further, as the gas, a gas having a fragrance effect, a gas colored with smoke or the like can be filled. By filling such a gas, various functions can be imparted to the panel block of the present invention.

A liquid for imparting design properties may be inserted into the gas layer.
Although it does not specifically limit as said liquid, For example, colored water etc. are preferable. By using colored water or the like, design properties can be imparted to the panel block of the present invention.
When a gas other than the liquid or air is inserted into the gas layer, it is necessary to sufficiently seal and seal the gas layer into which the liquid is inserted.

When the liquid is inserted into the gas layer, the liquid may be inserted so as to fill the entire space of the gas layer, and a part of the gas layer, for example, a part of the cell in the gas layer Can be inserted only.

A solid for imparting design properties may be inserted into the gas layer.
The solid is not particularly limited. For example, colored beads, dolls, stuffed toys, cloth / clothing, paper moldings, dried flowers, materials used for displays such as fresh flowers with a humidity control agent, pictures, books Examples thereof include materials that improve the interior properties of living spaces such as light emitters such as lights and lamps.

When the solid is inserted into the gas layer, the solid may be inserted so as to fill the entire space of the gas layer, and a part of the gas layer, for example, a part of the cell in the gas layer Can be inserted only. When the solid is inserted into the gas layer, a part of the solid may be fixed by a method using a wire, piano wire, glass fiber, or the like, or a method of sticking.

A combination of the liquid and solid may be inserted into the gas layer, and the solid may be suspended in the liquid or submerged in the liquid in the gas layer.

When the liquid or solid is inserted into the gas layer, the base film preferably has a strength capable of withstanding its own weight.

Although it does not specifically limit as a base film which comprises the said lighting insulation material, Since it is lightweight, a resin film is suitable.
The resin film is not particularly limited as long as it is excellent in transparency, and is made of, for example, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyethylene, acrylic, vinyl chloride, polyvinyl alcohol, cellulose triacetate, fluorine-containing resin, or the like. Things.
Of these, polycarbonate and vinyl chloride are preferable because they are self-extinguishing and have good compatibility as a building material. Moreover, it is preferable to use the resin film which gave the hard coat for the purpose of improving the scratch resistance of the resin film. Such a hard coat is not particularly limited, and examples thereof include those made of an acrylic resin. As the resin film to which such a hard coat is applied, for example, a resin film having a two-layer structure in which an acrylic resin layer is formed on the surface of a polycarbonate film or the like can be suitably used. Furthermore, when laminating a resin film on another base film, for example, polybutylene terephthalate can be suitably used.

As said base film, the film for the purpose of various functions, such as the designable film for the purpose of designability provision, the optical adjustment film for the purpose of visibility adjustment, may be sufficient as part or all of the said base film. . Further, depending on the purpose, an advertising logo, a partially pasted seal, or the like may be attached to the base film.

Although it does not specifically limit as thickness of the said base film, A preferable minimum is 10 micrometers and a preferable upper limit is 300 micrometers. When the thickness is less than 10 μm, the strength of the obtained heat insulating material may be inferior. When it exceeds 300 μm, the light insulating material may be thicker than necessary to obtain the same heat insulating effect. A more preferable lower limit is 20 μm, and a more preferable upper limit is 250 μm. In the above-described daylighting insulating material, when the strength of only the surface is required, a thick base film may be used only for the surface layer.

It is preferable that the said lighting insulation material has a spacer between base film. The spacer is used for maintaining the gas layer (maintaining the base film interval), sealing the periphery of the gas layer, dividing the gas layer, and the like.

Although it does not specifically limit as said spacer, In order to ensure the visible light transmittance | permeability of a daylighting heat insulating material, it is preferable that it is transparent, and in order not to inhibit the heat insulating performance of a daylighting heat insulating material, it is a thing with high heat insulation. Is preferred. Although it does not specifically limit as such a spacer, For example, a hollow body (a foam is included), FRP, the acrylic resin which has self-adhesiveness, etc. are suitable.

The shape of the spacer is not particularly limited, and may be particulate, linear, or the like. Moreover, you may provide designability to the obtained lighting heat insulating material with the shape of the said spacer. In addition, when there are a plurality of the gas layers, the spacers defining each gas layer may have the same shape or different shapes. For example, the spacers defining the adjacent gas layers may be orthogonal, and the spacers may have a lattice shape as a whole.

Although it does not specifically limit as thickness of the said lighting insulation material, A preferable minimum is 3.5 mm and a preferable upper limit is 100 mm. If it is less than 3.5 mm, if it maintains a visible light transmittance of 15%, it may not be able to exhibit the same level of heat insulation as the wall, and if it exceeds 100 mm, the gap between the gas layers will increase, resulting in poor cutting accuracy, The strength as a face material may decrease, and the handleability may be inferior.

Considering the workability of the panel block of the present invention, it is preferable to install a frame material for imparting rigidity (hereinafter also referred to as “lighting heat insulating material surrounding frame agent”) around the daylighting heat insulating material. . In particular, when a thin and light material is selected as the base film or the like, the strength of the daylighting heat insulating material is insufficient, and therefore it is effective to provide the surrounding frame for the daylighting heat insulating material.

The lighting heat insulating material surrounding frame may have a U-shaped cross section or may be simply fitted into the light insulating heat insulating material, or may be fixed with an adhesive, a sealing material, a double-sided tape or the like. When a fitting type simple air tight structure frame is adopted as the frame material around the daylighting heat insulating material, the frame material can be more easily fixed around the daylighting heat insulating material.
In order to ensure the flatness and right angle of the daylighting heat insulating material, a corner member is prepared separately and fitted into the corner of the daylighting heat insulating material.

Further, in order to simplify the construction, a jig for inserting the daylighting heat insulating material into the frame material of the panel block may be used. Although it will not specifically limit if the said jig | tool is for making insertion of the said lighting heat insulating material easy, For example, the U-shaped jig etc. which three sides fixed are mentioned. The above-mentioned lighting material face material is fitted into the U-shaped jig with the three sides fixed, and after inserting it into the panel block frame material, it can be easily constructed by removing the jig.

In the panel block of the present invention, the daylighting heat insulating materials are arranged to face each other across a gas layer having a thickness of 1 to 17 mm.
The panel block of the present invention has sufficient daylighting properties and high heat insulation properties similar to wall materials under the restriction that the thickness is 70 mm or more for use as a daylighting block application having heat insulation properties similar to wall materials. Desired. In order to achieve such performance, it is important to reduce the number of substrate films used for the daylighting heat insulating material as a whole as long as possible within a range that does not impair the heat insulating properties.
As a result of intensive studies, the present inventors have arranged two or more of the above-described daylighting insulating materials so as to face each other with a gas layer having a certain thickness interposed therebetween, thereby achieving high heat insulation with a minimum number of base films. I have found that I can achieve it.

The lower limit of the thickness of the gas layer between the daylighting insulators is 1 mm, and the upper limit is 17 mm. When the thickness is less than 1 mm, the number of substrate films used for the daylighting heat insulating material as the whole panel block increases when the panel block has a thickness of 100 mm or more, and the daylighting property cannot be ensured. When it exceeds 17 mm, it is impossible to achieve high heat insulation like a wall when a panel block is formed. A preferred lower limit is 1.5 mm and a preferred upper limit is 15 mm.

The method of fixing the hard resin plate or glass plate and the daylighting heat insulating material is not particularly limited, and examples thereof include a method of connecting and fixing with a connecting member made of resin or metal.

The panel block of the present invention has a thickness lower limit of 70 mm and an upper limit of 200 mm. When the thickness of the panel block of the present invention is less than 70 mm, it is impossible to achieve high heat insulation like a wall. When the thickness of the panel block of the present invention exceeds 200 mm, it is not possible to ensure daylighting, and the panel block protrudes into the room by protruding the frame of the opening, and the appearance is not good, or the living space is compressed. There is a risk of A preferred lower limit is 75 mm and a preferred upper limit is 150 mm.

In the panel block of the present invention, the lower limit of the visible light transmittance is 15%. If it is less than 15%, sufficient lighting cannot be obtained. A preferable lower limit of the visible light transmittance is 20%, and a more preferable lower limit is 25%.

Although it does not specifically limit as the weight of the panel block of this invention, A preferable upper limit is 20 kg from the problem of workability.

In FIG. 1, the schematic diagram of an example of the structure of the panel block of this invention was shown.
The panel block 1 in FIG. 1 includes two hard resin plates or glass plates 2, four sets of daylight insulating materials 3, and a connecting member 5 that holds them. The two hard resin plates or glass plates 2 are respectively arranged on the outermost part of the panel block 1. The four sets of daylighting heat insulating materials 3 are arranged to face each other with the gas layer 4 interposed therebetween.
Each of the daylighting insulating materials 3 has a structure in which the base film 31 is opposed to each other with the gas layer 32 interposed therebetween. The gas layer 32 is secured by a spacer 33 installed on the base film 31.

As for the panel block of this invention, it is preferable that the whole is integrated by the frame material. By integrating in this way, high workability can be exhibited. Further, when the frame material can be fitted to the periphery, higher workability can be exhibited.
Moreover, when the panel block of this invention can be fitted by the air tight structure frame mentioned later, workability improves more.

There is no limitation in particular as a material of the said frame material. When a metal such as aluminum is used for design reasons, it is preferable to have a structure in which only the surface is made of metal and the central portion is cut with a resin in order to prevent a decrease in heat insulation.
In addition, it is possible to improve the design by changing the size and shape of the panel block.

In FIG. 5, the schematic diagram which shows an example of the construction method of the panel block of this invention was shown.
In the panel block construction method shown in FIG. 5, within the frame of the opening of the building, slightly separated from the opening glass (in consideration of the thickness of the opening sash and the depth of the indoor surface, about 5 to 100 mm) ), The frame framework 16 for installing the panel block is installed. Examples of the frame framework 16 include those made of a metal such as aluminum or a resin and having a fitting portion that can be fitted with a frame material of the panel block. The panel block 1 is installed on the frame 16 and fitted and fixed. In addition, when the material excellent in durability, such as glass, an acrylic board, a polycarbonate board, is used as the outermost part of the panel block of this invention, opening part glass can also be abbreviate | omitted.
Further, as in the second aspect of the present invention, when the opening glass is present, the outermost hard plate on the opening glass side of the panel block to be attached can be omitted. Reducing the number of members also leads to cost reduction.

In FIG. 6, the schematic diagram which shows another example of the construction method of the panel block of this invention was shown.
In the construction method of the panel block shown in FIG. 6A, a method of directly fitting the panel blocks 1 to each other is used instead of using the frame structure 16 as shown in FIG. Although it does not specifically limit as a fitting method of the panel blocks 1, For example, a nail | claw shape etc. as shown in FIG.6 (b) are mentioned. Moreover, you may install the blindfold board 17 for concealing the fitting part of the panel blocks 1 for the purpose of improving the designability. In FIG. 6A, the frame framework 16 is used at the outer peripheral portion, but it can be omitted if the panel block 1 can be directly fitted into the frame of the opening of the building. In addition, when the material excellent in durability, such as glass, an acrylic board, a polycarbonate board, is used as the outermost part of the panel block of this invention, opening part glass can also be abbreviate | omitted.

In FIG. 7, the schematic diagram which shows another example of the construction method of the panel block of this invention was shown.
In the panel block construction method shown in FIG. 7, a method of fitting the panel block 1 to the opening glass 18 with an air tight structure frame is employed.
In the present specification, the air tight structure frame is a frame material having a fitting part of a male part and a female part, and particularly means that the fitting part has an airtight structure. One of the fitting portions is previously attached to the periphery of the panel block with a fixing agent such as a double-sided tape, and the fitting is performed by fitting into a pair of fitting members installed at the edge of the opening glass.

In FIG. 7, the panel block 1 and the opening glass 18 are fitted together by an air tight structure frame 19. The air tight structure frame 19 includes a detachable frame member 191 and a pressing member 192. The frame member 191 is arranged in a seal frame shape, for example, with an adhesive 20 or the like, around the opening glass 18. The panel block 1 is disposed inside the seal frame made of the frame member 191 so as to be in contact with the seal frame. In this state, the presser member 192 is attached to the frame member 191. Since the pressing member 192 has a protruding panel block pressing portion 193, the panel block 1 is securely fixed.
When removing the panel block 1, it is only necessary to remove the presser member 192 from the frame member 191.

A method for fixing the air tight frame to the opening glass is not particularly limited, but a method using a double-sided tape is preferable because it is dry and simple.
The method of fixing the panel block to the air tight structure frame is not particularly limited, and examples thereof include a method using a double-sided tape or an adhesive, a method using a pincher clip previously installed on the frame material, and the like. Although fixing the panel block to the air tight structure frame has an advantage that the construction becomes easier, it is not always necessary to fix the panel block. When not fixed, there is also an advantage that the panel block can be easily replaced.

By fitting the panel block and the opening glass using the air tight structure frame, it can be easily removed from the opening glass without damaging the panel block, and the removed panel block can be opened again if necessary. It can also be attached to.

A construction method in which a hard plate, a lighting heat insulating material, or the like is inserted or fitted into the outer frame material of the panel block having the rail groove in the frame is also possible.
In addition, the outer frame material of the panel block is divided into several members together with the rail groove or as a separate member. Set the face material on the first block outer frame material according to the procedure. A sequential coupling method in which the next face material is set after attaching the next block outer frame material is also possible.

Since the panel block of the present invention has sufficient daylighting properties, it can exhibit heat insulation similar to a wall only by being installed in a conventional opening. Moreover, if a glass plate or a resin hard plate with sufficient weather resistance is used as the outermost surface material on the indoor side, it can be used instead of the conventional opening member by improving the sealing property of the fitting shape of the panel block. It becomes. In any case, the opening area can be increased in housing design, and the degree of freedom in design can be dramatically increased.
When installing the panel block of this invention with respect to the conventional opening part, durability is guaranteed by opening glass.

ADVANTAGE OF THE INVENTION According to this invention, the panel block which can exhibit sufficient lighting property by installing in the opening part of a building, and can exhibit high heat insulation like a wall material can be provided.

Hereinafter, embodiments of the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

Example 1
(1) Preparation of daylighting heat insulating material An acrylic resin spacer having an outer diameter of 1.8 mm was coated on the film at intervals of 50 mm. A lighting heat insulating material was manufactured using six polyethylene terephthalate films having a width of 1000 mm and a thickness of 250 μm as a base film. The total thickness of the obtained lighting insulation was about 10 mm.
FIG. 2 is a front view of the obtained daylighting heat insulating material, and FIG. 3 is a cross-sectional view taken along line AA ′ of FIG.
In FIG. 3, 14 is a spacer made of acrylic resin, and 15 is a polyethylene terephthalate film.

(2) Preparation of panel block Four sets of the daylighting heat insulating materials prepared in (1) were used. A template acrylic plate 4 mm was used as the outdoor hard plate, and a template glass 4 mm thick was used as the indoor hard plate.
From a 4 mm thick acrylic board, 2 mm of daylight insulation 1, further through a 10 mm air layer, 2 daylight insulation 2, further through a 10 mm air layer, daylight insulation 3, and further through a 10 mm air layer Then, a 4 mm thick template glass was installed through the daylighting heat insulating material 4 and a 2 mm air layer.
The thickness of the air layer was defined by resin spacers provided inside the frame material.

(Example 2)
(1) Preparation of daylighting heat insulating material An acrylic resin spacer having an outer diameter of 1.0 mm was coated on the film at intervals of 50 mm. Two sheets of polyethylene terephthalate film (A4300-188 manufactured by Toyobo Co., Ltd.) having a width of 1000 mm and thickness of 188 μm and four sheets of polyethylene terephthalate film (A4300-125 manufactured by Toyobo Co., Ltd.) having a width of 1000 mm and thickness of 125 μm were used as the base film. A daylighting heat insulating material was manufactured such that a polyethylene terephthalate film having a thickness of 188 μm was the outermost layer. The total thickness of the obtained lighting heat insulating material was about 6 mm.

(2) Preparation of panel block Four sets of the daylighting heat insulating materials prepared in (1) were used. A 0.05 mm thick acrylic plate (Acryprene # HBS027 manufactured by Mitsubishi Rayon Co., Ltd.) was used as the outdoor hard plate, and a 4 mm thick plate glass (manufactured by Nippon Sheet Glass Co., Ltd.) was used as the indoor hard plate.
From the 0.05 mm thick acrylic board, the daylight insulation material 1 without any gap, the daylight insulation material 2 through the 14.5 mm air layer, and the daylight insulation material 3 through the 14.5 mm air layer, Furthermore, the lighting insulation 4 was installed through the air layer of 14.5 mm, and the plate glass 4mm thickness was installed without providing a clearance gap.
The thickness of the air layer was defined by resin spacers provided inside the frame material.

(Example 3)
A panel block was produced in the same manner as in Example 2 except that an acrylic plate having a thickness of 0.05 mm was not used.

(Comparative Example 1)
A panel block was produced in the same manner as in Example 1 except that no daylight insulation was used.

(Evaluation)
The panel block manufactured in Example 1 and Comparative Example 1 was evaluated as follows.
The results are shown in Table 1.

(1) Measurement of heat transmissivity 300mm x height 1200mm Opening using a heat insulating box with a planar rubber heater installed on the surface facing the opening and temperature-controllable by a slidac. The penetration rate was evaluated. A sample having a size of 300 × 1200 mm was fastened to the opening, and the heater was controlled so that the difference in air temperature between the inside and outside was about 20 ° C., and the amount of heat passing through the sample surface was measured in a steady state. The heat flow rate was calculated from the amount of heat passing through and the air temperature.
In addition, the heat transmissivity measured the thing of the panel block independent and the whole thing including an opening glass.

(2) Measurement of total light transmittance Total light transmittance (%) was measured by a method based on JIS R 3106 using a U-4100 spectrophotometer (manufactured by Hitachi High-Technologies Corporation).
For this measurement, a small sample having the same conditions as the installation was prepared and used for the measurement.

The panel block of Example 1 having a size of 350 × 350 mm was applied to one side with respect to an opening (1820 × 2500 mm) having a 6 mm-thick float glass / 12 mm argon gas layer / 6 mm-thick heat ray reflective glass paya glass. The surface temperature was observed with a thermo camera, and it was confirmed that the temperature was the same as that of the surrounding wall (heat transmissivity 0.4 W / m ² K). FIG. 4 shows a thermocamera image when the panel block of Example 1 is used.

It is a schematic diagram of an example of the structure of the panel block of this invention. It is a front view of the lighting insulation material produced in the Example. FIG. 3 is a cross-sectional view taken along the line A-A ′ of FIG. 2. It is a thermo camera image at the time of evaluating heat insulation using the panel block of Example 1. FIG. It is a schematic diagram which shows an example of the construction method of the panel block of this invention. It is a schematic diagram which shows an example of the construction method of the panel block of this invention. It is a schematic diagram which shows an example of the construction method of the panel block of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panel block 2 Hard resin board or glass board 3 Lighting insulation material 31 Base film 32 Gas layer 33 Spacer 4 Gas layer 5 Connecting member 14 Spacer 15 made of acrylic resin 15 Polyethylene terephthalate film 16 Frame frame 17 Blindfold plate 18 Open glass 19 Air tight Structural frame 191 Frame member 192 Press member 193 Panel block pressing portion 20 Adhesive

Claims

A panel block installed in an opening of a building,
Between the two hard resin plates or glass plates, at least two or more daylight insulating heat insulating materials are arranged to face each other with a gas layer having a thickness of 1 to 17 mm interposed therebetween,
The daylighting heat insulating material has a structure in which a plurality of substrate films are opposed to each other with a gas layer having a thickness of 0.4 mm to 17 mm interposed therebetween,
A panel block, wherein the entire panel block has a thickness of 70 mm or more and the visible light transmittance of the entire panel block is 15% or more.
A panel block installed in an opening of a building,
A structure in which at least two or more daylight insulation materials are arranged to face each other across a gas layer having a thickness of 1 to 17 mm with respect to one hard resin plate or glass plate,
The daylighting heat insulating material has a structure in which a plurality of substrate films are opposed to each other with a gas layer having a thickness of 0.4 mm to 17 mm interposed therebetween,
A panel block, wherein the entire panel block has a thickness of 70 mm or more and the visible light transmittance of the entire panel block is 15% or more.
The panel block according to claim 1, further comprising a frame material that can be fitted around.
The panel block according to claim 1, wherein the panel block can be fitted to the periphery by an air tight structure frame.