Light-transmitting member

Abstract

To prevent or inhibit the settling of aerogel in a hollow layer formed between translucent plates whose edges are closed therebetween.SOLUTION: A translucent member 10 includes a multilayer glass 50 having a hollow layer 54 formed between two glass plates 52 with edges 53 closed, a hollow polycarbonate plate 100 provided in the hollow layer 54 and having a hollow portion 106 filled with an aerogel M, a holding member 150 for holding an outer edge 110 of the hollow polycarbonate plate 100 at a distance from the glass plate 52, and a buffer member 160 provided between an end 112 of the hollow polycarbonate plate 100 and the holding member 150.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a translucent member.

Background Art

[0002] Patent Document 1 discloses a technique related to a multilayer glass. In this prior art, a spacer member is interposed between the outer peripheries of two opposing glass plates, and a translucent heat insulating material is filled in an airtight state between the opposing glass plates. The translucent heat insulating material is an aerogel composed of silica fine particles.

[0003] Patent Document 2 discloses a technique related to a translucent member using an aerogel. In this prior art, the translucent member includes a first translucent plate and a second translucent plate, and a translucent region defined between the first translucent plate and the second translucent plate. The translucent region is filled with at least translucent particles of an aerogel within a section between the first translucent plate and the second translucent plate. And the average particle diameter of the translucent particles is in the range of 0.05 to 0.5 mm.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a translucent member in which an aerogel is filled between translucent plates such as glass and the edges are closed, when the temperature rises or the like, the volume of the space filled with the aerogel increases, so that the granules or particles of the aerogel are packed most densely. And then, when the volume returns to its original state later, the aerogel settles, which may damage the aesthetic appearance or cause glare.

[0006] In view of the above facts, an object of the present invention is to provide a translucent member that prevents or suppresses the sedimentation of aerogel provided in a hollow layer formed between translucent plates with closed edges. **Means for Solving the Problems**

[0007] A first aspect is a multilayer translucent body in which a hollow layer is formed between a plurality of translucent plates with closed edges, a translucent resin plate provided in the hollow layer and filled with aerogel in a hollow portion, a holding member that holds an outer edge portion of the translucent resin plate at an interval from the translucent plate, and a buffer portion provided in at least one of a space between an end portion of the translucent resin plate and the holding member and the holding member. It is a translucent member provided with.

[0008] In the translucent member of the first aspect, by providing a translucent resin plate filled with aerogel in the hollow layer of the multilayer translucent body, the heat insulation property of the translucent member is improved. In addition, a space is formed between the translucent material and the translucent resin plate, and no thermal bridge occurs, so the heat insulation effect is improved compared to the case where the two are in contact.

[0009] Even if the translucent resin plate filled with aerogel thermally expands, the buffer portion deforms to prevent or suppress the out-of-plane deformation of the translucent resin plate. Further, even if the translucent plate is deformed out of plane due to the pressure difference between the air pressure in the hollow layer of the multilayer translucent body and the external air pressure, a space is formed between the translucent resin plate and the translucent plate, so that the out-of-plane deformed translucent plate presses the translucent resin plate. Thus, the out-of-plane deformation of the translucent resin plate is prevented or suppressed.

[0010] Here, if the translucent resin plate is deformed out of plane, the volume of the hollow portion changes. Then, there is a possibility that sedimentation occurs in the aerogel as the aerogel behaves to be most densely packed according to the volume change of the hollow portion.

[0011] However, as described above, in the translucent member of this aspect, the out-of-plane deformation of the translucent resin plate is prevented or suppressed, so the sedimentation of the aerogel filled in the hollow portion of the translucent resin plate is prevented or suppressed.

[0012] Furthermore, by disposing the translucent resin plate in the hollow layer, the pressure acting on the surface of the translucent resin plate is always constant, so the volume of the hollow portion does not change, and in this respect, the sedimentation of the aerogel is also prevented or suppressed.

[0013] A second aspect is a multilayer translucent body in which a hollow layer is formed between a plurality of translucent plates with their edges closed, a pair of translucent resin plates disposed at intervals in the hollow layer, a holding member that holds the outer edges of the pair of translucent resin plates at intervals from the translucent plates, a buffer portion provided in at least one of the space between the ends of the pair of translucent resin plates and the holding member and in the holding member, and an aerogel layer formed by filling aerogel between the pair of translucent resin plates.

[0014] In the translucent member of the second aspect, by filling aerogel between a pair of translucent resin plates provided in the hollow layer of the multilayer translucent body to form an aerogel layer, the heat insulation property of the translucent member is improved. In addition, a space is formed between the translucent body and the transparent resin plate material, and no thermal bridge occurs, so the heat insulation effect is improved as compared with the case where the two are in contact.

[0015] Even if the translucent resin plate thermally expands, the deformation of the translucent resin plate in the out-of-plane direction is prevented or suppressed by the deformation of the buffer portion. Also, even if the translucent plate is deformed out of plane due to the pressure difference between the air pressure in the hollow layer of the multilayer translucent body and the external air pressure, since a space is formed between the translucent resin plate and the translucent plate, the out-of-plane deformation of the translucent resin plate caused by the out-of-plane deformed translucent plate pushing the translucent resin plate is prevented or suppressed. Furthermore, even if the translucent plate is deformed out of plane, the pressures generated on the surface of the translucent resin plate on the side of the translucent plate and the surface on the side of the aerogel layer are the same, so the out-of-plane deformation of the translucent resin plate due to the pressure difference is prevented or suppressed.

[0016] Here, if the translucent resin plate is deformed out of plane, the volume of the aerogel layer between the pair of translucent resin plates changes. And there is a possibility that sedimentation occurs in the aerogel as the aerogel behaves to be most densely packed in response to the volume change of this aerogel layer.

[0017] Further, if the translucent resin plate is deformed out of plane, the volume of the hollow portion changes. Then, there is a possibility that sedimentation occurs in the aerogel because the aerogel behaves to be most densely packed according to the volume change of the hollow portion.

[0018] However, as described above, in the translucent member of the present aspect, out-of-plane deformation of the translucent resin plate is prevented or suppressed. Therefore, sedimentation of the aerogel in the aerogel layer between the pair of translucent resin plates and the aerogel filled in the hollow portion of the translucent resin plate is prevented or suppressed.

[0019] The third aspect is the translucent member according to the second aspect, wherein the translucent resin plate has a hollow portion filled with an aerogel.

[0020] In the translucent member of the third aspect, since the hollow portion of the translucent resin plate is filled with an aerogel, the heat insulation effect is improved. Further, even if, for example, unevenness occurs in the aerogel of the aerogel layer due to splicing or the like by a plurality of filling operations, since the hollow portion of the translucent resin plate is filled with an aerogel, unevenness in the aerogel layer is hardly recognized.

[0021] Further, since out-of-plane deformation of the translucent resin plate is prevented or suppressed, sedimentation of the aerogel filled in the hollow portion of the translucent resin plate is prevented or suppressed.

Advantages of the Invention

[0022] According to the present invention, sedimentation of the aerogel provided in the hollow layer formed between a plurality of translucent plates with the edges thereof closed in the translucent member can be suppressed.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0024] <First Embodiment> The light-transmitting member according to the first embodiment of the present invention will be described.

[0025] (Structure) First, the structure of the light-transmitting member according to the first embodiment will be described.

[0026] The light-transmitting member 10 shown in FIG. 1 includes a multilayer glass 50 as an example of a multilayer light-transmitting body, a hollow polycarbonate plate 100 as an example of a light-transmitting resin plate, a holding member 150, and a buffer member 160 as an example of a buffer portion. In the present embodiment, the light-transmitting member 10 is attached to a window frame 15, but is not limited thereto.

[0027] The multilayer glass 50 has a structure in which a hollow layer 54 is formed between two glass plates 52 as an example of a light-transmitting plate. A spacer 20 is sandwiched between the edge portions 53 of the two glass plates 52. In the present embodiment, the edge portion 53 of the glass plate 52 and the spacer 20 are adhered with a butyl-based tape material 22, but are not limited thereto. Further, the outside of the spacer 20 between the edge portions 53 of the two glass plates 52 is closed by a silicone-based sealing material 30 as an example of a closing material.

[0028] Note that the spacer 20 of the present embodiment has a hollow inside, and a desiccant (not shown) is filled in the hollow portion, but is not limited to such a structure.

[0029] A hollow polycarbonate plate 100 is provided in a hollow layer 54 of a multilayer glass 50. As shown in FIG. 4, the hollow polycarbonate plate 100 of the present embodiment is a member in which a plurality of cylindrical hollow portions 106 are formed side by side by a plurality of ribs 104 provided between two polycarbonate plates 102.

[0030] As shown in FIG. 1, the hollow portion 106 (see also FIG. 4) of the hollow polycarbonate plate 100 is filled with an aerogel M.

[0031] Here, an aerogel is a granular or powdery porous low-density structure obtained by replacing a solvent contained in a gel with a gas by a supercritical drying method or the like.

[0032] The holding member 150 has a U-shaped cross section and holds the outer edge portion 110 of the hollow polycarbonate plate 100 at a distance L from the glass plate 52. The holding member 150 of the present embodiment is made of a resin-based material and has a function of preventing the outflow of the aerogel M filled in the hollow portion 106 (see also FIG. 4) of the hollow polycarbonate plate 100, but is not limited thereto. The holding member 150 may have at least a function of holding the hollow polycarbonate plate 100 at a distance from the glass plate 52 in the hollow layer 54. Note that the spacer 20 and the holding member 150 may be separated.

[0033] The buffer member 160 is provided between the end portion 112 of the hollow polycarbonate plate 100 and the holding member 150. In the present embodiment, the buffer member 160 is formed of a resin tube, but is not limited thereto, and may be formed of, for example, a rubber-based material or a foamed foam material.

[0034] (Manufacturing method) Next, an example of a manufacturing method of the light-transmitting member 10 of the present embodiment will be described.

[0035] First, place the hollow polycarbonate plate 100 with the rib 104 (see Fig. 4), that is, with the direction along the rib 104 (see Fig. 4), namely the axial direction of the cylindrical hollow portion 106 (see Fig. 4) as the vertical direction. Excluding the upper end portion 112, join the buffer member 160 and the holding member 150 to close the lower open end of the hollow portion 106.

[0036] Fill the hollow portion 106 of the hollow polycarbonate plate 100 with aerogel M from the upper open end.

[0037] After the filling of aerogel M in all the hollow portions 106 is completed, join the buffer member 160 and the holding member 150 to the upper end portion 112 of the hollow polycarbonate plate 100 to close the upper open end of the hollow portion 106.

[0038] Next, place the hollow polycarbonate plate 100 filled with aerogel M so as to overlap on one of the glass plates 52 constituting the horizontally installed multilayer glass 50. Arrange the spacers 20 along the four circumferences of the hollow polycarbonate plate 100, and fix one of the glass plates 52 and the spacers 20 with a butyl-based tape material 22.

[0039] Lay the other glass plate 52 on the hollow polycarbonate plate 100, and fix the other glass plate 52 and the spacers 20 with a butyl-based tape material 22.

[0040] Finally, fill and seal the entire outer circumference of the spacers 20 between the edges 53 of the two glass plates 52 with a silicone-based sealing material 30.

[0041] (Function and Effect) Next, the function and effect of the light-transmitting member 10 of the present embodiment will be described.

[0042] By providing the hollow polycarbonate plate 100 filled with aerogel M in the hollow layer 54 of the multilayer glass 50, the heat insulation property of the light-transmitting member 10 is improved. Also, a gap L is formed between the glass 52 and the hollow polycarbonate plate 100, and no thermal bridge occurs. Therefore, compared with the case where the two are in contact, the heat insulation effect is improved.

[0043] Even if the hollow polycarbonate plate 100 filled with aerogel M undergoes thermal expansion, the out-of-plane deformation of the hollow polycarbonate plate 100 is prevented or suppressed by the deformation of the buffer member 160. Further, even if the glass plate 52 undergoes out-of-plane deformation due to the pressure difference between the air pressure in the hollow layer 54 of the multilayer glass 50 and the external air pressure, a gap L is formed between the glass plate 52 and the hollow polycarbonate plate 100. Therefore, the out-of-plane deformation of the hollow polycarbonate plate 100 caused by the out-of-plane deformed glass plate 52 pressing against the hollow polycarbonate plate 100 is prevented or suppressed.

[0044] Here, if the hollow polycarbonate plate 100 undergoes out-of-plane deformation, the volume of the hollow portion 106 changes. Then, there is a possibility that sedimentation may occur in the aerogel M as the aerogel M tries to behave so as to be most densely packed in response to the volume change of the hollow portion 106.

[0045] However, as described above, in the light-transmitting member 10 of the present embodiment, the out-of-plane deformation of the hollow polycarbonate plate 100 is prevented or suppressed. Therefore, sedimentation of the aerogel M filled in the hollow portion 106 of the hollow polycarbonate plate 100 is prevented or suppressed.

[0046] <Second Embodiment> Next, the light-transmitting member of the second embodiment of the present invention will be described. The same members as those in the first embodiment are denoted by the same reference numerals, and duplicate explanations are omitted or simplified.

[0047] (Structure) First, the structure of the light-transmitting member of the second embodiment will be described.

[0048] The light-transmitting member 12 shown in FIG. 2 includes a multilayer glass 51 as an example of a multilayer light-transmitting body, two hollow polycarbonate plates 100 as examples of light-transmitting resin plates, holding members 151 and 152, first and second buffer members 161 and 162 as examples of buffer portions, and an aerogel layer 130. In the present embodiment, the light-transmitting member 12 is attached to the window frame 16, but is not limited thereto.

[0049] The multilayer glass 51 has a structure in which a hollow layer 55 is formed between two glass plates 52 as an example of a light-transmitting plate. A spacer 21 is sandwiched between the edges 53 of the two glass plates 52. In the present embodiment, the edge 53 of the glass plate 52 and the spacer 21 are adhered with a butyl-based tape material 22, but it is not limited thereto. Further, the outside of the spacer 21 between the edges 53 of the two glass plates 52 is closed by a silicone-based sealing material 31 as an example of a closing material.

[0050] Note that the spacer 21 of the present embodiment has a hollow interior, and a desiccant (not shown) is filled in the hollow portion, but it is not limited to such a structure.

[0051] The hollow portion 106 of the hollow polycarbonate plate 100 is filled with aerogel M. Two hollow polycarbonate plates 100 are provided in the hollow layer 55 of the multilayer glass 51 at intervals.

[0052] The holding member 151 is composed of two holding portions 151A having a U-shaped cross section and a connecting portion 151B connecting the two holding portions 151A.

[0053] The holding member 152 is composed of two holding portions 151A having a U-shaped cross section, a connecting portion 151B connecting the two holding portions 151A, and a second buffer member 162. In the present embodiment, the second buffer member 162 is sandwiched and joined between the two holding portions 151A and the connecting portion 151B. Note that the second buffer member 162 and the connecting portion 151B do not have to be joined. That is, they may only be in contact with each other.

[0054] Then, by holding the outer edges 110 of the two hollow polycarbonate plates 100 with the respective holding portions 151A of the holding members 151 and 152, the hollow polycarbonate plates 100 are provided in the hollow layer 55 at an interval L from the glass plates 52.

[0055] Note that the holding members 151 and 152 of the present embodiment are made of a resin-based material and have a function of preventing the outflow of the aerogel M filled in the hollow portion 106 of the hollow polycarbonate plate 100, but are not limited thereto. The holding members 151 and 152 only need to have a function of holding at least two hollow polycarbonate plates 100 in the hollow layer 55 with a gap L from the glass plate 52.

[0056] The first buffer member 161 is provided between the end portion 112 of the hollow polycarbonate plate 100 and the holding portion 151A of the holding members 151 and 152. Note that the first buffer member 161 is the same member as the buffer member 160 (see FIG. 1) of the first embodiment.

[0057] The second buffer member 162 is provided inside the holding member 152. Specifically, as described above, both ends are provided so as to contact the glass plate 52 between the holding portion 151A and the connecting portion 151B.

[0058] In the present embodiment, both the first buffer member 161 and the second buffer member 162 are made of resin tubes, but are not limited thereto. For example, they may be made of a rubber-based material or a foamed foam material. Note that the spacer 21 and the holding member 151 may be separated.

[0059] The aerogel layer 130 is formed by filling aerogel N between two hollow polycarbonate plates 100.

[0060] The aerogel N filled in the aerogel layer 130 between the two hollow polycarbonate plates 100 may contain an aerogel having an average particle size of about 1 mm to 5 mm, or may contain an aerogel having an average particle size of 1 mm or less. Further, an aerogel mixed with opaque silica particles may be contained.

[0061] Also, the aerogel N filled in the aerogel layer 130 and the aerogel M filled in the hollow portion 106 of the hollow polycarbonate plate 100 may be the same, or may have different particle sizes, mixing ratios of opaque silica, etc.

[0062] Note that the structure shown in FIG. 2 is merely an example and is not limited thereto. For example, as in the modification shown in FIG. 5, a structure may be adopted in which a holding member 159 is provided between the connecting portion 151B of the holding member 151 and the spacer 21. A second buffer member 162 may be provided between the connecting portion 151B and the holding portion 159.

[0063] (Manufacturing method) Next, an example of the manufacturing method of the translucent member 12 of the present embodiment will be described.

[0064] In the same manner as in the first embodiment, two hollow polycarbonate plates 100 filled with aerogel M are manufactured. Specifically, the two hollow polycarbonate plates 100 are installed with the direction along the rib 104 as the vertical direction, and the buffer members 161, 162 and the holding members 151, 152 are joined except for the upper end portion 112, and the openings at the lower ends of the hollow portion 106 and the aerogel layer 130 are closed.

[0065] The hollow portion 106 of the hollow polycarbonate plate 100 is filled with aerogel M from the upper opening end. Further, aerogel N is filled between the two hollow polycarbonate plates 100.

[0066] After the filling of aerogel M and aerogel N is completed, the buffer member 161 and the holding member 151 are joined to the upper end portion 112 of the hollow polycarbonate plate 100 to close the upper opening ends of the hollow portion 106 and the aerogel layer 130.

[0067] Next, the two hollow polycarbonate plates 100 filled with aerogel M and aerogel N are installed so as to overlap on one glass plate 52 constituting the multilayer glass 51 installed horizontally. The spacers 21 are arranged around the hollow polycarbonate plate 100, and one glass plate 52 and the spacers 21 are fixed with a butyl-based tape material 22.

[0068] Place the other glass plate 52 on top of the hollow polycarbonate plate 100, and fix the other glass plate 52 and the spacer 21 with a butyl tape material 22.

[0069] Finally, fill and seal the entire outer circumference of the spacer 21 between the edges 53 of the two glass plates 52 with a silicone-based sealing material 31.

[0070] (Function and Effect) Next, the function and effect of the light-transmitting member 12 of this embodiment will be described.

[0071] In the light-transmitting member 12, by filling an aerogel N between the two hollow polycarbonate plates 100 filled with two aerogels M provided in the hollow layer 55 of the double-layer glass 51 to form an aerogel layer 130, the heat insulation property of the light-transmitting member 12 is improved. Also, a gap L is formed between the glass plate 52 and the hollow polycarbonate plate 100, and no thermal bridge occurs, so the heat insulation effect is improved compared to the case where the two are in contact.

[0072] Even if the hollow polycarbonate plate 100 thermally expands, the out-of-plane deformation of the hollow polycarbonate plate 100 is prevented or suppressed by the deformation of the first buffer member 161 and the second buffer member 162. Also, even if the glass plate 52 undergoes out-of-plane deformation due to the pressure difference between the air pressure in the hollow layer 55 of the double-layer glass 51 and the external air pressure, since a gap L is formed between the glass plate 52 and the hollow polycarbonate plate 100, the out-of-plane deformation of the hollow polycarbonate plate 100 caused by the out-of-plane deformed glass plate 52 pushing the hollow polycarbonate plate 100 is prevented or suppressed. Furthermore, even if the glass plate 52 undergoes out-of-plane deformation, the pressures generated on the surface of the hollow polycarbonate plate 100 on the side of the glass plate 52 and the surface on the side of the aerogel layer 130 are the same, so the out-of-plane deformation of the hollow polycarbonate plate 100 due to the pressure difference is prevented or suppressed.

[0073] Here, if the hollow polycarbonate plate 100 is deformed out of plane, the volume of the aerogel layer 130 between the two hollow polycarbonate plates 100 changes. Then, due to the behavior of the aerogel N trying to be most densely packed in response to the volume change of this aerogel layer 130, there is a risk of sedimentation occurring in the aerogel N.

[0074] Also, if the hollow polycarbonate plate 100 is deformed out of plane, the volume of the hollow portion 106 changes. Then, due to the behavior of the aerogel M trying to be most densely packed in response to the volume change of this hollow portion 106, there is a risk of sedimentation occurring in the aerogel M.

[0075] However, as described above, in the light-transmitting member 12 of the present embodiment, the out-of-plane deformation of the hollow polycarbonate plate 100 is prevented or suppressed. Therefore, sedimentation of the aerogel N filled in the aerogel layer 130 between the two hollow polycarbonate plates 100 and the aerogel M filled in the hollow portion 106 of the hollow polycarbonate plate 100 is prevented or suppressed.

[0076] Further, even if, for example, unevenness occurs in the aerogel N in the aerogel layer 130 due to splicing or the like by a plurality of filling operations, since the aerogel M is filled in the hollow portion 106 of the hollow polycarbonate plate 100, the unevenness of the aerogel layer 130 is difficult to be recognized.

[0077] <Experiment with test specimens> Next, the experiment regarding the presence or absence of sedimentation of the aerogel with test specimens will be described.

[0078] First, the structures of the first test specimen 510, the second test specimen 520, and the third test specimen 530 shown in FIG. 3 will be described.

[0079] (First test specimen) The first test specimen 510 shown in Fig. 3(A) has a structure in which the hollow layer 552 of the double-glazed glass 550 is filled with aerogel N to form an aerogel layer 132. The double-glazed glass 550 has a structure in which a hollow layer 55 is formed between two glass plates 52 that are 300 mm square and 6 mm thick. A spacer 24 is sandwiched between the edges 53 of the two glass plates 52. The spacer 24 is made of wood. Also, the outside of the spacer 24 between the edges 53 of the two glass plates 52 is blocked by a silicone-based sealing material 34.

[0080] (Second test specimen) The second test specimen 520 shown in Fig. 3(B) has a structure in which two hollow polycarbonate plates 100 filled with aerogel M in the hollow portions 106 are provided with a gap in the hollow layer 552 of the double-glazed glass 550, and aerogel N is filled between the two hollow polycarbonate plates 100 to form an aerogel layer 130. The two hollow polycarbonate plates 100 are held by a holding member 151, but no first buffer member 161 (see Figs. 2 and 3(C)) or the like is provided between the end portions 112 and the holding member 151.

[0081] (Third test specimen) The third test specimen 530 shown in Fig. 3(C) has a structure in which a first buffer member 161 is provided between the end portions 112 of the two hollow polycarbonate plates 100 of the second test specimen 520 (see Fig. 3(B)) and the holding member 151.

[0082] Note that for all of the first test specimen 510, the second test specimen 520, and the third test specimen 530, the aerogel N used was a mixture of a silica aerogel with an average particle size of about 0.4 mm and a silica aerogel with an average particle size of about 1.5 mm. Also, for the second test specimen 520 and the third test specimen 530, a holding member 159 may be provided between the connecting portion 151B of the holding member 151 and the spacer 24, as in the modification of the second embodiment shown in Fig. 5.

[0083] (Test method) The first test specimen 510, the second test specimen 520, and the third test specimen 530 are installed in a thermostat in the vertical direction (the out-of-plane direction is the horizontal direction), Raise the temperature from 20°C to 80°C over 2 hours Maintain at 80°C for 1 hour Lower the temperature from 80°C to 20°C over 2 hours After the cycle, visual inspection was performed.

[0084] (Test results) ·First test body 510 The silica aerogel with an average particle size of about 1.5 mm that constitutes aerogel N settled, and an air layer of about 5 cm was generated above the hollow layer 552.

[0085] ·Second test body 520 Neither the silica aerogel with an average particle size of about 0.4 mm nor the silica aerogel with an average particle size of about 1.5 mm that constitutes aerogel N settled. However, residual deformation presumably due to thermal expansion occurred in the hollow polycarbonate plate 100.

[0086] ·Third test body 530 There were no noticeable changes.

[0087] <Others> Note that the present invention is not limited to the above embodiments.

[0088] For example, in the light-transmitting member 10 of the first embodiment above, the buffer member 160 was provided at both end portions 112 of the hollow polycarbonate plate 100, but it is not limited thereto. It may be provided only at one end portion 112. Also, a buffer member may be provided in the holding member 150 as in the second buffer member 162 of the second embodiment. Further, when a buffer member is provided in the holding member 150, the buffer member 160 may not be provided.

[0089] Further, for example, in the light-transmitting member 12 of the second embodiment, the first buffer member 161 was provided at both end portions 112 of the hollow polycarbonate plate 100, but it is not limited thereto. It may be provided only at one end portion 112. Also, the second buffer member 162 may be provided inside the holding member 151, or may not be provided at all. Further, when the second buffer member 162 is provided, the first buffer member 161 may not be provided.

[0090] Also, although the second buffer member 162 formed of a resin tube or the like is provided in the holding member 152, it is not limited thereto. An air layer may be provided in the holding member, and this air layer may be made to function as a buffer portion.

[0091] In short, as long as a buffer portion having a function of suppressing or preventing out-of-plane deformation of the hollow polycarbonate plate 100 by deforming and absorbing the thermal expansion of the hollow polycarbonate plate 100 is provided in at least one of the end portion 112 of the hollow polycarbonate plate 100 and the holding member.

[0092] Also, for example, in the above embodiment, the hollow polycarbonate plate 100 is used as the light-transmitting resin plate, but it is not limited thereto. Any light-transmitting resin plate having a hollow portion that can be filled with aerogel may be used. Also, in the second embodiment, a light-transmitting resin plate having no hollow portion may be used.

[0093] Also, for example, in the above embodiment, the multilayer glasses 50 and 51 use two glass plates 52, but it is not limited thereto. It may be configured using three or more glass plates 52. When it is configured with three or more glasses, it has a plurality of hollow layers, but as long as a light-transmitting resin plate to which the present invention is applied is provided in at least one of the plurality of hollow layers.

[0094] Also, for example, in the above embodiment, the glass plate 52 is used as the light-transmitting member, but it is not limited thereto. A light-transmitting member other than glass, for example, a resin light-transmitting member such as an acrylic plate or a polycarbonate plate may be used. In the case of a resin light-transmitting member, the fire resistance and durability are lower than those of glass, but it is lighter than glass.

[0095] Also, the light-transmitting member, the light-transmitting plate, and the light-transmitting resin plate only need to allow light to pass through, and may be transparent, translucent, or opaque.

[0096] Furthermore, it can be implemented in various modes without departing from the gist of the present invention. A plurality of embodiments and modification examples can be implemented in combination as appropriate.

Explanation of Reference Numerals

[0097] 10 Light-transmitting member 12 Light-transmitting member 50 Double-glazed glass (an example of a multi-layer light-transmitting body) 51 Double-glazed glass (an example of a multi-layer light-transmitting body) 52 Glass plate (an example of a light-transmitting plate) 54 Hollow layer 55 Hollow layer 100 Hollow polycarbonate plate (an example of a light-transmitting resin plate) 106 Hollow portion 110 Outer edge portion 112 End portion 130 Aerogel layer 150 Holding member 151 Holding member 152 Holding member 160 Buffer member (an example of a buffer portion) 161 First buffer portion (an example of a buffer portion) 162 Second buffer member L Spacing M Aerogel N Aerogel

Claims

1. A multilayer light-transmitting body formed by sandwiching and adhering a spacer between the edges of two light-transmitting plates, A light-transmitting resin plate provided in a hollow layer surrounded by the two light-transmitting plates and the spacer, with the hollow portion filled with an aerogel, A holding member disposed along the inner surface of the spacer in the hollow layer, holding the outer edge portion of the light-transmitting resin plate at a distance from the light-transmitting plate, A buffer portion provided in at least one of the space between the end portion of the light-transmitting resin plate and the holding member and in the holding member, A light-transmitting member comprising the above.

2. A multilayer light-transmitting body formed by sandwiching and adhering a spacer between the edges of two light-transmitting plates A pair of light-transmitting resin plates provided at intervals in the plate thickness direction in a hollow layer surrounded by the two light-transmitting plates and the spacer, A holding member disposed along the inner surface of the spacer in the hollow layer, holding the outer edge portion of the light-transmitting resin plate at a distance from the light-transmitting plate, A buffer member provided in at least one of the space between the end portions of the pair of light-transmitting resin plates and the holding member and in the holding member, An aerogel layer formed by filling the space between the pair of light-transmitting resin plates with a first aerogel, A light-transmitting member comprising the above.

3. The light-transmitting resin plate has a hollow portion, and the hollow portion is filled with a second aerogel, The light-transmitting member according to Claim 2.

4. The average particle size of the first aerogel and the average particle size of the second aerogel are different, The light-transmitting member according to Claim 3.

5. The pressures generated on the light-transmitting plate side surface and the aerogel layer side surface of the light-transmitting resin plate due to out-of-plane deformation of the light-transmitting plate are made the same, The light-transmitting member according to any one of Claims 2 to 4.

6. The buffer member is composed of either a rubber-based material or a foamed foam material as a material, The light-transmitting member according to any one of Claims 2 to 5.

Images