JP7461182B2 - Light transmission panel, light transmission device - Google Patents

Description

The present invention relates to a panel that transmits light and a light transmitting device.

In buildings, boards that partition indoors and outdoors or adjacent indoor spaces using lightweight boards such as honeycomb boards that have many holes that communicate in the thickness direction, and various devices that use these boards as constituent elements are known. ing. For example, Patent Document 1 discloses a soundproof panel that surrounds a construction site and reduces the propagation of construction noise to the outside world. Further, Patent Document 2 discloses a ventilation panel for mounting on a door, which is made of a laminate of a honeycomb board and an insect screen, and has a configuration in which each communication hole in the honeycomb board is covered by a plurality of holes in the insect screen. has been done. This also has a structure that allows air to communicate between indoors and outdoors for ventilation, and allows light to pass through while blocking visibility.

Patent Publication No. 2526133 Japanese Patent Application Publication No. 2008-138476

An object of the present invention is to provide a light transmission panel with a novel aspect that can control transmission of light. Further, a light transmitting device including a light transmitting panel is provided.

One aspect of the present disclosure is a light-transmitting panel that includes a plate-shaped main body, a plurality of light-transmitting sections that transmit light in the thickness direction of the main body, and end members that are disposed on the edges of the light-transmitting sections.

The end members may be made of resin.

Another aspect of the present disclosure includes a light-transmitting panel and a face material disposed on at least one surface of the light-transmitting panel, and the light-transmitting panel has a plate-like body and a body that allows light to pass through the body in the thickness direction. The face material has a hole penetrating in the thickness direction, and the hole has a size that includes the plurality of light transmitting parts in a plan view. It is a permeation device. At this time, two facing materials are provided, one of which is placed on one side of the light-transmitting panel, and the other facing is placed on the other side of the light-transmitting panel, and the two facing materials include: At least one of the holes may be configured to have the same in-plane position.

It is also possible to provide a light-transmitting device that includes a panel having a hole penetrating in the thickness direction and a light-transmitting panel arranged inside the hole, the light-transmitting panel having a plate-shaped main body and a plurality of light-transmitting portions that transmit light in the thickness direction of the main body, and the hole is large enough to include a plurality of light-transmitting portions in a plan view.

It is also possible to provide a light-transmitting device that includes a light-transmitting panel and a plurality of surface materials arranged on at least one surface of the light-transmitting panel, the light-transmitting panel having a plate-shaped main body and a plurality of light-transmitting portions that transmit light in the thickness direction of the main body, and that forms an area including a plurality of light-transmitting portions in a planar view in a portion where no surface materials are arranged. In this case, the plurality of surface materials may be arranged on both sides of the light-transmitting panel, and the area arranged on one surface of the light-transmitting panel and the area arranged on the other surface of the light-transmitting panel may be configured to have at least a portion thereof at the same in-plane position.

In the light transmitting device, an end member may be provided at the edge of the light transmitting portion, and this may be made of resin or adhesive.

Two of the above light transmission devices may be stacked on top of each other, and the two light transmission devices may be movable relative to each other.

According to the present disclosure, it is possible to control the transmission of light, to control the incidence of light into a room, to restrict the line of sight, and to give a sense of unity and a new appearance to a space or building.

FIG. 1 is a perspective view of the light transmission panel 10. FIG. 2 is a diagram showing a portion of the light-transmitting panel 10. As shown in FIG. FIG. 3 is a diagram showing examples of the shape of the light transmitting portion 11a. FIG. 4 is a diagram illustrating the shape of one example of the light transmitting portion 11a. FIG. 5 is a diagram for explaining an example of the shape of the light transmitting portion 11a. FIG. 6 is a diagram illustrating the shape of one example of the light transmitting portion 11a. FIG. 7 is a diagram for explaining the function of the light-transmitting panel 10. In FIG. FIG. 8 is a perspective view of the light transmission device 20. FIG. 9 is an exploded perspective view of the light transmission device 20. As shown in FIG. FIG. 10 is a front view of the light transmission device 20. FIG. 11 is a perspective view of the light transmission device 30. FIG. 12 is an exploded perspective view of the light transmission device 30. FIG. 13 is a perspective view of the light transmission device 40. FIG. 14 is an exploded perspective view of the light transmission device 40. FIG. 15 is a front view of the light transmission device 40. As shown in FIG. FIG. 16 is a diagram for explaining a test method for the frontal field of view and the downward field of view. FIG. 17 is a diagram for explaining a test method for the horizontal visual field. FIG. 18 is a diagram illustrating a test method for lighting property. FIG. 19 is a diagram illustrating an air permeability test method. FIG. 20 is a diagram illustrating a scratch resistance test method.

Hereinafter, examples of the light-transmitting panel and the light-transmitting device of the present disclosure will be described with reference to the drawings. However, these drawings are conceptual and do not represent precise dimensions or scales. Furthermore, the present invention is not limited to the following examples.
For convenience, the axial directions of a three-dimensional orthogonal coordinate system are also shown in each drawing. Here, the in-plane directions of the flat light-transmitting panel and light-transmitting device are the XY in-plane directions, and the thickness direction is the Z direction.

[Light-transmitting panel]
Fig. 1 shows an external perspective view of a light-transmitting panel 10 according to one embodiment. The left side of Fig. 2 shows a plan view (as viewed from the Z direction) of a part of the light-transmitting panel 10 (a part indicated by A in Fig. 1), and the right side of Fig. 2 shows a cross-sectional view taken along the line B-B in Fig. 2.

As can be seen from FIGS. 1 and 2, the light transmitting panel 10 is a plate-shaped member as a whole, and has a plate-shaped main body 11. A plurality of light transmitting portions 11a that transmit light are provided.
In this embodiment, the light transmitting portion 11a is constituted by a hole that penetrates the main body 11 in the thickness direction, and this hole is surrounded by a wall 11b that is a part of the main body 11. This embodiment has a so-called honeycomb structure in which hexagonal light transmitting portions 11a are minutely arranged in the XY plane when viewed from above. However, the light transmitting parts 11a do not necessarily have to be arranged minutely, and it is sufficient that a plurality of light transmitting parts 11a are arranged in the XY plane.

Further, the shape of the light transmitting portion 11a in plan view does not need to be hexagonal, and may be any other geometric shape. FIG. 3 shows an example of the shape. The shape shown in the upper part of FIG. 3 is a square example, the shape shown in the center of FIG. 3 is a circular example, and the shape shown in the lower part of FIG. 3 is a triangular example. However, it is not limited to these examples; for example, if it is a quadrilateral, it may be a rectangle, a rhombus, a parallelogram, etc., and may also be an ellipse, a wave shape, or an irregular geometric shape. .

The inner surface properties of the wall 11b that constitutes the light-transmitting portion 11a can also be set as appropriate. For example, the daylighting efficiency can be improved by increasing the light reflectivity of the inner surface of the wall 11b. Conversely, the light blocking ability can be increased by decreasing the light reflectivity of the inner surface (for example, by making it black). Furthermore, by making the inner surface rough, light can be diffusely reflected, which can reduce visibility on the opposite side or create a unique design.

The material constituting the main body 11 is not particularly limited, and is preferably a material that does not transmit light. Among these, lightweight metals are preferred, such as metals such as aluminum and titanium, alloys such as duralumin containing one or more of these metals, and meta-aramid resins (products include Nomex from E.I. du Pon). ), polyethylene, polypropylene, polyethylene terephthalate (PET), polyvinyl chloride (PVC), polycarbonate resin, acrylic resin, phenol resin, urea resin, melamine resin, urethane resin , resin such as epoxy resin, paper, woven fabric, or non-woven fabric such as kraft paper, cardboard, glass woven fabric (glass cloth), glass non-woven fabric, or any one of resin on paper, woven fabric, or non-woven fabric In the case of a curable resin impregnated with more than one species, examples include those obtained by curing the impregnated resin.

Furthermore, in this embodiment of the light-transmitting panel 10, end members 12 are arranged on the front and back surfaces of the main body 11 (both ends in the thickness direction (Z direction)). An explanatory diagram is shown in FIG. 4. The diagram shown in the upper part of FIG. 4 is a plan view focusing on one light-transmitting portion 11a, the diagram shown in the center of FIG. 4 is a cross-sectional view taken along the arrows C-C in FIG. 4, and the diagram shown in the lower part of FIG. 4 is an enlarged view of the portion indicated by D in FIG. 4.

As can be seen from Fig. 4, in the light-transmitting panel 10 of this embodiment, the end members 12 are arranged along the portions of the main body 11 that form the edges of the light-transmitting portions 11a. This makes it possible to give the light-transmitting panel 10 a unique appearance. In addition, by arranging the end members 12 on the edges of the light-transmitting portions 11a, it is possible to obtain functions such as protecting the edges and preventing injuries caused by touching the edges.
In this embodiment, the end members 12 are disposed on both the front and back surfaces of the main body 11, but this is not limiting and the end members 12 may be disposed on only one of the surfaces.
Furthermore, unlike the present embodiment, when adjacent light-transmitting portions 11a are spaced apart and there is a flat portion of the main body 11 between the adjacent light-transmitting portions 11a, the end member 12 may be arranged only on the edge of the light-transmitting portion 11a, or the end member 12 may be arranged on the edge as well as on the flat portion of the main body 11.

The end member 12 may be disposed at least at the edge of the light transmitting portion 11a of the main body 11. For example, in addition to a form in which the end member 12 is arranged only at the edge of the light transmitting part 11a as in this embodiment, a material is arranged inside the light transmitting part 11a as shown in FIGS. 5 and 6. The end member 12 may be configured by doing so. 5 and 6 are views from the same perspective as FIG. 4. The figure shown in the upper part of FIG. 5 is a plan view focusing on one light transmitting part 11a, the figure shown in the center of FIG. 5 is a sectional view taken along the line E--E in FIG. The figure shown in FIG. 5 is an enlarged view of the portion indicated by F in FIG. The figure shown in the upper part of FIG. 6 is a plan view focusing on one light transmitting part 11a, the figure shown in the center of FIG. 6 is a sectional view taken along the line GG in FIG. The figure shown in FIG. 6 is an enlarged view of the portion indicated by H in FIG.
In this embodiment, the material is filled inside the light transmitting portion 11a, so that the material is disposed at the edge of the light transmitting portion 11a, thereby forming the end member 12. The example in FIG. 5 is an example in which the entire inside of the light transmitting part 11a is filled with a light transmitting material, and the example in FIG. 6 is an example in which the material is arranged along the surface of the wall 11b forming the light transmitting part 11a. .

Although there is no particular limitation on the material constituting the end member 12, it is possible to use a resin, such as silicone resin, fluorine resin, polycarbonate resin, polyester resin, acrylic resin, urethane resin, epoxy resin, and melamine resin.
According to this, the resin is applied (dip coating, etc.) to the edge of the light transmitting portion 11a in the form of a solution or dispersion, a liquid composition such as a monomer or prepolymer, or a liquid material obtained by heating and melting the resin, and after the application, if the liquid material is a solution or dispersion, the solvent or dispersion medium is dried to solidify (harden) the resin to form the end member 12. If the liquid material is a liquid composition of a monomer or prepolymer, the end member 12 can be formed by solidifying (hardening) the resin through a crosslinking or polymerization reaction caused by heating, exposure to ionizing radiation such as electron beams or ultraviolet rays, moisture, etc. If the liquid material is a liquid material obtained by heating and melting the resin, the end member 12 can be formed by solidifying (hardening) the resin through cooling the melt.

The resin can also be made of an adhesive, as this also contributes to bonding with the surface material of the light-transmitting device described below. Examples of such adhesives include natural polymer adhesives such as starch and casein, vinyl adhesives such as polyvinyl acetate, acrylic adhesives, polyester adhesives, polyamide adhesives, and thermoplastic resin adhesives such as polyurethane adhesives, and thermosetting resin adhesives such as epoxy resins.

Moreover, it is preferable that the light transmission panel 10 is configured as follows, for example.
The opening area of each light transmitting portion 11a (the area of the opening portion of one light transmitting portion 11a from the perspective of the upper diagram in FIG. 4) is preferably 4 mm ² or more and 900 mm ² or less. The opening areas of the light transmitting portions 11a do not need to be the same in all of the light transmitting portions included in the light transmitting panel 10, and may be intentionally changed beyond the range of error (±5%). In this case, for example, the opening area may be changed steplessly or stepwise from one end of the light transmission panel to the other end in plan view, or each light transmission area may be changed to the extent that it feels irregular. The opening area of the portion 11a may be changed.

In each light transmitting part 11a, when considering the shape of the opening when viewed in plan as shown in the upper diagram of FIG. It is preferable that the shortest distance L is 2 mm or more and 30 mm or less.
Moreover, it is preferable that the shortest distance with respect to the longest distance among the distances is 0.1 or more and 1.0 or less.

The depth of the light transmitting portion 11a (thickness of the light transmitting panel 10) indicated by T in FIG. 2 is preferably 3 mm or more and 100 mm or less.

4 is preferably 10° or more and 80° or less, which allows more remarkable control of the field of view on the opposite side across the light-transmitting panel 10. Here, the angle θ is defined as follows.
First, consider a cross section in the thickness direction corresponding to the diagram shown in the center of Fig. 4 at the shortest distance of the above-mentioned distance L. Next, as shown in the diagram in the center of Fig. 4, a diagonal line is defined so that the Y-direction positions of one end on one side in the Z direction and the other end on the other side are opposite, as shown in the diagram in the center of Fig. 4. Two such lines can be obtained, one rising to the right and one falling to the right in Fig. 4, and the smaller angle with respect to the line parallel to the Z direction (line parallel to the thickness direction) is defined as the prospective angle θ.

The ratio of the total opening area of the light transmitting portion to the planar area of the light transmitting panel (length x width, size in the X direction x size in the Y direction) is preferably 0.70 or more and 0.99 or less.

When there is regularity in the arrangement of the light-transmitting portions 11a, it is preferable that the distance between adjacent light-transmitting portions 11a of the same configuration (e.g., the pitch indicated by P in Figure 2) is 4 mm or more and 60 mm or less.

The light-transmitting panel 10 described above functions, for example, as follows. An explanatory diagram is shown in FIG. 7. FIG. 7 is similar to the diagram shown on the right side of FIG. 2, and shows a cross section of the light-transmitting panel 10.

When the light-transmitting panel 10 is placed between indoors and outdoors or between adjacent spaces indoors (it is placed upright with the Y direction as the vertical direction), the line of sight from both sides of the light-transmitting panel 10 ( Arrow S) in FIG. 7 is limited to viewing angles from angles close to the Z direction, and other lines of sight can be blocked, increasing concealment.
On the other hand, as for light, like the line of sight, light that enters at a large angle to the Z direction is blocked, but light that enters at an angle close to parallel to the Z direction is transmitted (arrow L ₁ in FIG. 7). In particular, it is possible to selectively take in light that reaches deep into the space, ensuring sufficient lighting. Here, if the inner surface of the wall 11b constituting the light transmitting part 11a is configured to have light reflectivity, reflected light can also be collected (arrow L ₂ in FIG. 7), and the amount of incident light can be increased. can. On the other hand, if the inner surface of the wall 11a constituting the light transmitting part 11a is configured so as not to reflect light, light incident at a large angle with respect to the Z direction is blocked; For example, in the summer, light is expected to come from a high altitude, causing a rise in the temperature of the indoor space, so it is possible to block this light and increase cooling efficiency.

In addition, if the light-transmitting portion 11a is configured with a hole that penetrates the thickness direction of the main body 11, breathability can also be ensured.

[Light transmission device]
FIG. 8 shows an external perspective view of a light transmitting device 20 according to one embodiment, FIG. 9 shows an exploded perspective view thereof, and FIG. 10 shows a plan view (viewed from the Z direction). As can be seen from these figures, the light transmitting device 20 of this embodiment includes the above-described light transmitting panel 10 and face materials 21 disposed on the front and back sides thereof.

The light transmitting panel 10 described above can be used as the light transmitting panel 10. This light transmitting panel 10 can be any of the light transmitting panels described above.
Moreover, instead of this light-transmitting panel 10, a light-transmitting panel that does not include the end member 12 that was included in the light-transmitting panel 10 and consists only of the main body 11 and the light-transmitting part 11a can also be used.

The face material 21 is a thin plate-like member, and includes a plate-like face material body 22 and a plurality of holes 22a provided in the face material body 22.

In particular, as can be seen from FIG. 10, one hole 22a includes a plurality of light transmitting portions 11a of the light transmitting panel 10 in a plan view of the face material 21 (view from the Z direction, viewpoint in FIG. 10). The light transmitting portion 11a of the light transmitting portion 11a is exposed. However, it is not necessary that all the holes 22a among the plurality of holes 22a have such a size, and at least in the plurality of holes 22a, a plurality of light transmitting parts 11a are included in one hole 22a in plan view ( A plurality of light transmitting portions 11a are exposed.) Any size may be sufficient.
The size of the holes 22a other than those mentioned above is not particularly limited, and can be changed as appropriate from the viewpoints of line-of-sight control, lighting, ventilation, design, etc.

The shape of the hole 22a is not particularly limited, and can be set as appropriate from the viewpoint of line of sight control, lighting, ventilation, design, etc. In addition to being circular as in this embodiment, it may also be triangular, quadrilateral (square, etc.). polygons such as rectangles, rhombuses, parallelograms, etc.), pentagons, and hexagons; various geometric shapes such as ellipses, ellipses, and waves; shapes in the shape of letters such as the alphabet, hiragana, katakana, and kanji, etc. It can take any form.

The pitch of the holes 22a, the number of arranged holes, the aperture ratio (expressed as a percentage of the area occupied by the holes in the main body of the panel material), etc. should be set appropriately from the viewpoint of line of sight control, lighting, ventilation, design, etc. I can do it.

The material constituting such a surface material is not particularly limited, but is preferably selected from the viewpoint of ensuring the strength of the light transmission device 20. For example, various metals such as aluminum, titanium, iron, copper, etc., or alloys containing one or more of these metals such as duralumin and stainless steel, glass, ceramics such as porcelain, resins such as silicone resin, fluorine resin, polycarbonate resin, polyester resin, acrylic resin, polyvinyl chloride, etc. can be used as appropriate as needed.

The thickness of the face material is also not particularly limited, but from the viewpoint of reducing the weight of the light transmitting device 20, it is preferably thin, and specifically, it is preferably 0.1 mm or more and 10 mm or less, and 0.3 mm or more and 5.0 mm or less. It is more preferable that
In addition, the ratio of the total opening area of the light transmitting portion of the light transmitting panel as viewed in plan to the area of the light transmitting device in plan view (length x width, size in the X direction x size in the Y direction) is 0.20 or more. It is preferably 0.70 or less.

In addition, in this embodiment, the surface material 21 is disposed on both the front and back sides of the light-transmitting panel 10, but it may be disposed on only one side. When the surface material 21 is disposed on both the front and back sides, it is preferable that the positions of the holes 22a of both surface materials 21 coincide in the plane (in the xy plane) in at least a portion of the surface material. This allows light to pass through the light-transmitting device 20 through the holes 22a. The transmission of light at this time is controlled as described above for the light-transmitting panel 10, and the above-mentioned effects are achieved.

The method of joining the light transmitting panel 10 and the face material 21 is not particularly limited, and a known method can be used. For example, the light transmitting panel 10 and the face material 21 may be fixed by one frame, or a combination of bolts and nuts may be used.
Further, if the light transmitting panel 10 is provided with an end member 12 and the end member 12 is made of adhesive, this adhesive can be used for joining with the face material 21, and the adhesion using this can also be performed. It is possible.

The light-transmitting device 20 described above has the same effects as the light-transmitting panel 10, but also has excellent design, making it possible to create a sense of unity with the space, or to create a distinctive space, for example.

FIGS. 11 and 12 are diagrams for explaining a light transmitting device 30 according to another embodiment. FIG. 11 is an external perspective view of the light transmission device 30, and FIG. 12 is an exploded perspective view of the light transmission device 30.
The light transmitting device 20 has a form in which face materials 21 are arranged on both sides of a single plate-shaped light transmitting panel 10, whereas the light transmitting device 30 has a plurality of holes in a single face material main body 32. 32a, and a light transmitting panel 33 is disposed so as to be fitted into each of the plurality of holes 32a.
Such a light transmitting device 30 also provides similar effects.

13 to 15 are diagrams for explaining a light transmission device 40 according to still another embodiment. Fig. 13 is an external perspective view of the light transmission device 40, Fig. 14 is an exploded perspective view of the light transmission device 40, and Fig. 15 is a front view of the light transmission device 40.
The light-transmitting device 20 is configured such that a hole 22a is provided in the surface material 21 to expose a portion of the light-transmitting panel 10, allowing light controlled by the light-transmitting panel 10 to pass through the hole 22a. In contrast, the light-transmitting device 40 has a plurality of surface materials 41 arranged on at least one surface side of the light-transmitting panel 10, and a portion where the surface materials 41 are not arranged is an area 41a, which acts in the same way as the hole 22a to expose a portion of the light-transmitting panel 10, allowing light controlled by the light-transmitting panel 10 to pass through the area 41a.
Such a light transmission device 40 also provides the same effect.

When multiple surface materials 41 are arranged on both the front and back sides, it is preferable that the positions of the regions 41a on both sides coincide within the plane (within the XY plane) for at least a portion of the surfaces. This allows light to pass through the light transmission device 40 through the regions 41a. The transmission of light at this time is controlled as described above for the light transmission panel 10, and the above-mentioned effects are achieved.

In addition, the face material 21a may be arranged on one surface of the light transmission panel 10, and the area|region 41a by the several surface material 41 may be formed on the other surface. In this case as well, it is preferable that the positions of the hole 21a and the region 41a coincide (in the XY plane) at least in part.

The light transmitting devices in each of the examples above are configured with one light transmitting device, but two light transmitting devices are stacked in the thickness direction and are configured to move relatively in the X direction or Y direction. may be done. This allows light to pass through by overlapping the holes in the face material of the two light transmitting devices in the thickness direction, and blocking light by shifting the positions of both holes, allowing you to switch between light transmission and blocking. be able to.

The light transmitting panel and light transmitting device described above can be applied anywhere inside or outside a building. In particular, it is effective to apply it to locations and uses where the advantage of selectively restricting light, line of sight, and wind can be obtained depending on the mounting manner. In other words, for example, with regard to light, there are modes that can cut direct light, decorate the appearance (illumination), and diffuse the light, and with respect to line of sight, there are modes that protect privacy by limiting the viewing angle by blocking a part of the line of sight. As for wind, it is a mode that blocks or weakens strong winds.
More specific application examples include curtains and blinds installed near windows, room partitions, blinds, lighting covers, etc. for indoor applications, and blinds, entrance blind fences, balcony railing curtains, ceiling louvers, and eaves for outdoor applications. Examples include a louver, an external louver, and the like.

In Examples 1 and 2, a light-transmitting panel was produced following the example of the light-transmitting panel 10, and in Examples 3 and 4, a light-transmitting device was produced following the example of the light-transmitting device 20 described above, and its performance was evaluated. The details are as follows.

[Embodiments of Examples 1 to 4]
<Light-transmitting panel>
In Examples 1 to 4, an aluminum honeycomb panel (Morishin Kogyo Co., Ltd.) was used as the light-transmitting panel. All panels had a width of 400 mm, a length of 600 mm, and a thickness (T in FIG. 2) of 8 mm. The shape of each hole in the honeycomb that constitutes the light-transmitting portion is hexagonal, and the size is 1/2 inch in Example 1 and 1/4 inch in Examples 2 to 4.
Here, the size of the honeycomb is expressed as a known indication, which is the distance between the opposing sides of a hexagon (three pairs in total). If the shape is not a regular hexagon, it is expressed by the shortest distance among the three pairs of opposing sides.

An end member was disposed on the edge of the light-transmitting portion of the light-transmitting panel as follows: Note that the end member in Example 3 and Example 4 also served to adhere to the face material.
In Example 1, an epoxy adhesive (Konishi Co., Ltd., MOS7, product number #46811) was applied to give a weight of 70 g/m ² (mass after drying) and left to stand at a temperature of 25° C. for 24 hours or more to harden.
For Example 2, a vinyl acetate adhesive (Konishi Corporation, woodworking bond, product number #40167) was applied to give a thickness of 100 g/m ² (mass after drying) and left to stand at a temperature of 25° C. for 24 hours or more to harden.
For Example 3, a vinyl acetate adhesive (Konishi Corporation, multipurpose woodworking bond, product number #5504) was applied to give a thickness of 150 g/ ^m2 (mass after drying) and left to harden at a temperature of 25°C for 24 hours or more.
For Example 4, a two-part mixed epoxy adhesive (Konishi Corporation, Bond E Set, product number #16023) was applied to give a weight of 100 g/ ^m2 (mass after drying) and left to stand at a temperature of 25°C for 24 hours or more to harden.

<Surface material>
In Example 3, an aluminum sheet (400 mm wide, 600 mm long, 0.5 mm thick) was used, and multiple holes with a diameter of 6 mm were provided at equal intervals so that the aperture ratio was 35% (aperture ratio 0.35). In this example, a surface material was placed on only one side of the light-transmitting panel.
In Example 4, a resin decorative sheet (400 mm wide, 600 mm long, 0.5 mm thick) was used, and multiple holes with a diameter of 30 mm were provided at equal intervals so that the opening rate was 44% (opening ratio 0.44). In this example, face materials were placed on both sides of the light-transmitting panel.

[Form of Comparative Example 1]
In Comparative Example 1, a plurality of long square rods made of aluminum (30 mm square cross section on a side) were arranged with the longitudinal direction being vertical and a plurality of square rods arranged at equal intervals in the horizontal direction (with an aperture ratio of 50% (opening ratio of 50%). The ratio was 0.50)).
[Form of Comparative Example 2]
Comparative Example 2 was a light transmitting panel in which no end member was disposed compared to the light transmitting panel of Example 1.
[Form of Comparative Example 3]
Comparative Example 3 was based on Example 3, with no holes in the face material (that is, the opening ratio was 0% (opening ratio 0)).

[test]
<Front line of sight (front view)>
The test specimen is stood at the boundary with the outdoors (Y direction is the vertical direction), and as shown by P in Figure 16, the tester P is located on the indoor side in front of the specimen, and his/her line of sight is on the XY plane of the specimen. The central part of the test piece was visually observed parallel to the normal direction, and the visibility on the opposite side of the test piece was confirmed. When the opposite side could be seen, it was judged as acceptable, and when it was not possible, it was judged as unacceptable. In this test, being ``passed'' means that visibility is ensured in the front viewing angle.

<Downward gaze (downward field of vision)>
The test specimen was set up at the boundary with the outdoors (Y direction was vertical), and as shown by Q in Figure 16, tester Q was positioned on the indoor side of the test specimen, and looked down at the center of the test specimen so that his line of sight was 60 degrees downward from the normal direction of the XY plane of the test specimen, to visually confirm the visibility of the opposite side of the test specimen. If the opposite side could be seen, it was rated as "OK", and if not, it was rated as "NO". In this test, a "NO" result means that the line of sight was blocked in the vertical direction and the viewing angle was appropriately controlled.

<Horizontal diagonal line of sight (horizontal field of view)>
The test specimen is stood at the boundary with the outdoors (Y direction is the vertical direction), and as shown by R in Figure 17, the tester R is located on the indoor side of the test specimen, and his line of sight is the normal to the XY plane of the test specimen. The visibility on the opposite side of the test piece was visually confirmed by looking at the center of the test piece at an angle of 70° horizontally to the direction. When the opposite side could be seen, it was marked as "passable," and when it was not, it was marked as "fail." In this test, a "fail" means that the line of sight was blocked in the horizontal direction and the viewing angle was properly controlled.

<Light gathering>
As shown in Figure 18, the test specimen for each example was set up at the boundary with the outdoors (Y direction was the vertical direction), and a luminance meter was placed on the floor at a position 150 mm away from the front of the test specimen toward the indoor side, and the intensity of the incident light was measured with the luminance meter.

<Breathability>
As shown in Figure 19, the test specimens of each example were stood vertically indoors, with a dryer (HITACHI HD-1263) on one side and an anemometer (manufacturer: Custom Model number: CW-50) was placed at a distance of 150 mm from the surface of the test specimen and at a height of 150 mm. Cold air was blown from the dryer toward the test specimen, and the wind speed was measured using an anemometer.

<Abrasion resistance (abrasion resistance) when the test specimen ends come into contact with each other>
As shown in FIG. 20, the test specimen of each example was placed horizontally (Y direction is horizontal), and a transparent PET sheet (Lumirror (registered trademark) #38-S10 manufactured by Toray Industries, Inc.) was placed on top of it. Furthermore, a weight (load 1 kg, load for Gakushin type friction fastness tester, manufactured by Tester Sangyo Co., Ltd.) is placed on top of it. In this state, the PET sheet is slid along with the weight 100 mm on the surface of the test piece, and then slid again to the original position (one reciprocation). Thereafter, the surface of the PET sheet was visually observed to confirm the scratch resistance of the test piece. A case where there was a scratch on the PET sheet was judged as "presence", and a case where there was no damage was judged as "no".

The results for each example are shown in Table 1.

As can be seen from the results, for the test specimens according to the examples, the vertical direction (downward field of view) and horizontal field of view were restricted while securing the front field of view, making it possible to appropriately control the field of view. . Furthermore, the test specimen according to the example has abrasion resistance, that is, damage caused by the end of the light-transmitting part to others, and it is possible to protect the end itself.
Furthermore, in this example, since the light transmitting portion is hollow, ventilation is also possible.

10 light transmission panel 11 main body 11a light transmission part 11b wall 12 end member 20, 30 light transmission device 21 face material 22, 32 face material main body 22a, 32a hole 33 light transmission panel

Claims (10)

A plate-shaped main body;
A plurality of light transmitting portions having a honeycomb structure and transmitting light in a thickness direction of the main body;
an end member arranged on an edge portion and an inner surface of the light transmitting portion and made of an adhesive ;
The end member is exposed to the outside.
Light-transmitting panel. The light transmitting panel according to claim 1, wherein the end member is made of resin. A light-transmitting panel and a surface material disposed on at least one surface of the light-transmitting panel,
The light-transmitting panel includes:
A plate-shaped main body;
A plurality of light transmitting portions having a honeycomb structure and transmitting light in a thickness direction of the main body;
An end member disposed on an edge of the light transmitting portion;
having
The surface material has a hole penetrating in a thickness direction, and the hole has a size that includes a plurality of the light transmitting portions in a plan view,
The end member disposed at the hole is exposed to the outside.
Light transmission device. Two of the face materials are provided,
The one surface material is disposed on one surface of the light-transmitting panel, and the other surface material is disposed on the other surface of the light-transmitting panel,
The light transmission device according to claim 3 , wherein at least one of the holes in the two panel members has the same in-plane direction position. A face material having a hole penetrating in the thickness direction, and a light transmitting panel disposed inside the hole,
The light transmitting panel is
A main body that is plate-shaped;
a plurality of light transmitting parts that have a honeycomb structure and transmit light in the thickness direction of the main body;
an end member disposed at the edge of the light transmitting part and exposed to the outside;
The light transmitting device, wherein the hole has a size that includes the plurality of light transmitting portions in a plan view. A light-transmitting panel and a plurality of surface materials arranged on at least one surface of the light-transmitting panel,
The light-transmitting panel includes:
A plate-shaped main body;
A plurality of light transmitting portions having a honeycomb structure and transmitting light in a thickness direction of the main body;
an end member disposed on an edge of the light transmitting portion and exposed to the outside;
In a portion where the surface material is not disposed, a region including a plurality of the light transmitting portions is formed in a plan view, and the end member is exposed to the outside.
Light transmission device. The plurality of face materials are arranged on each of both sides of the light transmission panel,
6. The region disposed on one surface of the light transmission panel and the region disposed on the other surface of the light transmission panel have at least a portion of the same in-plane direction position. The light transmission device described in . The light transmitting device according to any one of claims 3 to 7, wherein the end member is made of resin. The light transmission device according to claim 8, wherein the resin is an adhesive. A light transmitting device, wherein two light transmitting devices according to any one of claims 3 to 9 are stacked on top of each other, and the two light transmitting devices are relatively movable.

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