JP2015206860A - window structure unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window structure unit such that display of a character, a diagram and the like on an exterior wall of a building can be performed by lighting a window while securing prospect landscape from an indoor side.SOLUTION: A window structure unit 10 includes: a polarization member 1 that has a first principal surface 1a and a second principal surface 1b and has one polarization surface; a light source 2 that emits polarization light L having a polarization surface substantially orthogonal to the polarization surface of the polarization member 1 toward a direction of the first principal surface 1a of the polarization member 1; and a transparent member 3 that is disposed between the light source 2 and the polarization member 1 and is capable of reflecting the polarization light L emitted from the light source 2.

Description

  The present invention relates to a window structure unit. More specifically, when viewed from the outdoor side, a display formed by light is observed, and when viewed from the indoor side, a window structure unit that enables viewing of the scenery without being disturbed by light About.

  Conventionally, a window plate provided with a half mirror layer has been used as a window structure unit that prevents a peep from the outdoor side while ensuring a view landscape from the indoor side. For example, Patent Document 1 discloses a glass plate, a light source that emits light toward the side wall of the glass plate, a half mirror disposed on the inner main surface of the glass plate, and an outer main surface of the glass plate. A window structure unit is described that comprises a diffusion layer disposed on the top.

JP 2014-47572 A

  By the way, there is a demand to display characters, figures, and the like on the outer wall of a building by making a window emit light while ensuring a view from the indoor side. Since the window structure unit of Patent Document 1 can recognize light from the indoor side, it is difficult to see the scenery, and the request cannot be sufficiently met.

  The main object of the present invention is to provide a window structure unit that can display characters, figures, etc. on the outer wall of a building by making the window emit light while ensuring a view from the indoor side. It is in.

  By using a polarizing member, a light source that emits polarized light, and a transparent member that can reflect polarized light, the inventor causes a window to emit light while ensuring a view from the indoor side, and characters on the outer wall of the building. It has been found that it is possible to display images and graphics.

  That is, the window structure unit of the present invention has a first main surface and a second main surface, a polarizing member having one polarizing surface, and a direction of the first main surface of the polarizing member, A light source that emits polarized light having a polarization plane substantially orthogonal to the polarization plane of the polarization member; a transparent member that is disposed between the light source and the polarization member and that can reflect the polarization emitted from the light source; It is characterized by providing.

  If it is such a structure, a character, a figure, etc. can be displayed on the outer wall of a building using the reflected light which reflects the polarized light from a light source with a transparent member. The polarized light transmitted through the transparent member is shielded by the polarizing member, and out of the natural light from the outdoor side, polarized light having a polarization plane parallel to the polarization plane of the polarizing member passes through the polarizing member and enters the indoor side. Therefore, it is possible to secure a view from the indoor side.

  In the window structure unit of the present invention, it is preferable that the polarized light is S-polarized light with respect to the incident surface of the transparent member.

  With such a configuration, it is possible to clearly display the outer wall of the building.

  In the window structure unit of the present invention, it is preferable that the transparent member has a main surface facing the light source, and the main surface of the transparent member has a concave portion and / or a convex portion.

  With such a configuration, since the transparent member reflects polarized light from the light source in various directions, the range in which the display of the outer wall of the building can be confirmed can be expanded.

  Moreover, it is preferable that the thickness of the said transparent member is 0.05-5 mm in the window structure unit of this invention. The thickness of the transparent member is preferably 2 mm or less in terms of weight reduction, and more preferably 1 mm or less.

  If it is such a structure, distortion will not arise in the view scenery from the indoor side, and the range which can confirm the display of the outer wall of a building can be expanded.

  Providing a window structure unit that enables display of characters, figures, and the like on the outer wall of a building by causing the window to emit light while ensuring a view from the indoor side by the present invention described above. Is possible.

FIG. 1 is a schematic side view of a window structure unit according to the first embodiment of the present invention. FIG. 2 is a schematic side view of a window structure unit according to the second embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described. However, the present invention is not limited to the following embodiments, and is based on ordinary knowledge of a person skilled in the art without departing from the gist of the present invention. It should be understood that modifications and improvements as appropriate to the following embodiments also fall within the scope of the present invention. Moreover, in each drawing referred in embodiment etc., the member which has a substantially the same function shall be referred with the same code | symbol. The drawings referred to in the embodiments and the like are schematically described. A ratio of dimensions of an object drawn in a drawing may be different from a ratio of dimensions of an actual object. The dimensional ratio of the object may be different between the drawings. The specific dimensional ratio of the object should be determined in consideration of the following description.

(First embodiment)
FIG. 1 is a schematic side view of the window structure unit according to the first embodiment. As shown in FIG. 1, the window structure unit 10 includes a polarizing member 1, a light source 2, and a transparent member 3. Note that the window structure unit 10 may be supported by a support member such as a window frame (not shown).

  The polarizing member 1 has a first main surface 1a and a second main surface 1b. The first main surface 1a faces the outdoor side, and the second main surface 1b faces the indoor side. The polarizing member 1 has one polarization plane. Natural light has the property of a wave and vibrates in various directions. The polarizing member 1 is an element (member) for extracting polarized light limited to one specific polarization plane, so-called “linearly polarized light”.

  As such a polarizing member 1, a TAC film for a liquid crystal polarizing plate, a wire grid polarizing plate, polarizing glass, or the like can be used. When using the TAC film for liquid crystal polarizing plates as the polarizing member 1, it is preferable to use the TAC film for liquid crystal polarizing plates attached to the surface of a transparent substrate having the same size as the TAC film for liquid crystal polarizing plates. As the transparent substrate, a plate glass, a polycarbonate plate, an acrylic plate, or the like can be used.

  A light source 2 is provided on the first main surface 1 a side of the polarizing member 1. The light source 2 is not particularly limited as long as the light source 2 emits polarized light L having a polarization plane substantially orthogonal to the polarization plane of the polarization member 1 toward the first main surface 1 a of the polarization member 1. Here, “substantially orthogonal” represents an angle range of 80 ° to 100 °. Although only one line of polarized light L is shown in FIG. 1, in the present embodiment, polarized light L is emitted from the light source 2 toward the entire surface of the polarizing member 1. The light source 2 is arrange | positioned according to the position which confirms the display of the window structure unit 10. FIG. For example, as shown in FIG. 1, when the light source 2 is positioned below the window structure unit 10 to confirm the display of the window structure unit 10, the light source 2 has the polarization L as the window structure unit as shown in FIG. 1. It is preferable that the polarizing member 1 is disposed above the polarizing member 1 in the height direction so as to be reflected downwardly.

  The light source 2 can be constituted by an LED (Light Emitting Diode), a laser light source, a halogen light bulb, a HID (High Intensity Discharge) light bulb, an incandescent light bulb, or the like. When an LED, a halogen light bulb, an HID light bulb, an incandescent light bulb, or the like is used as the light source 2, the light emitted from the light source 2 is polarized on the first main surface 1a side of the polarizing member 1 of the light source 2. By providing a polarizing filter, the polarized light L can be obtained. When using a laser light source that is polarized, the polarization L can be obtained by appropriately setting the polarization axis.

  The luminous intensity, luminous flux, illuminance, luminance, and the like of the polarized light L emitted from the light source 2 can be appropriately set according to the purpose and range of display. Further, the polarized light L may be continuously emitted from the light source 2 or blinked. In addition, by arbitrarily setting the color of the polarized light L emitted from the light source 2, it is possible to improve the expressive power of displaying characters, figures, and the like on the outer wall of the building.

  The transparent member 3 is disposed between the light source 2 and the polarizing member 1. More specifically, the transparent member 3 is disposed at a position where the polarized light L emitted from the light source 2 toward the first main surface 1a of the polarizing member 1 is irradiated. The transparent member 3 is made of at least a material that can reflect the polarized light L emitted from the light source 2. Examples of such materials include glass, quartz, polycarbonate resin, acrylic resin, and polyethylene terephthalate resin. Among these, it is preferable that the glass is excellent in strength and weather resistance and inexpensive.

  The transparent member 3 preferably has an average reflectance of natural light (visible light) at an incident angle of 60 ° of 20% or more and 40% or more in order to make the display of the outer wall of the building clear. More preferred.

  The average reflectance of natural light of the transparent member 3 can be adjusted, for example, by changing the refractive index of the transparent member 3. For example, in order to increase the average reflectance, the refractive index of the transparent member 3 may be increased. The refractive index can be adjusted by changing the composition of the glass and the degree of polymerization of the polycarbonate resin or acrylic resin.

  The polarized light L irradiated to the transparent member 3 is reflected and transmitted according to the refractive index of the transparent member 3 and the incident angle θ of the polarized light L. If the polarized light L is S-polarized light whose electric field oscillates perpendicularly to the incident surface of the transparent member 3, the average reflectance of the polarized light L at an incident angle of 60 ° is about 40% or more. Can be clarified.

  Moreover, in order to ensure the view scenery from the indoor side, the transparent member 3 needs to be able to transmit natural light from the outdoor side. From the viewpoint of securing a view from the indoor side, the linear transmittance (average reflectance when the incident angle is 0 °) of the transparent member 3 is preferably 70% or more, and preferably 80% or more. More preferred.

  In addition, all the said average reflectance or average transmittance | permeability is the value calculated | required in the wavelength range of 380-780 nm.

  The polarized light L reflected by the transparent member 3 functions as a display unit for the outdoor side. On the other hand, the polarized light L transmitted through the transparent member 3 is blocked by the polarizing member 1 without being transmitted to the indoor side because its polarization plane is substantially orthogonal to the polarization plane of the polarizing member 1. Furthermore, out of the natural light from the outdoor side, polarized light (not shown) having a polarization plane parallel to the polarization plane of the polarization member 1 passes through the polarization member 1 and is incident on the indoor side. Therefore, even if the polarized light L from the light source 2 is emitted, a view landscape from the indoor side can be secured.

(Second Embodiment)
FIG. 2 is a schematic side view of the window structure unit according to the second embodiment. As shown in FIG. 2, in the window structure unit 20 of the present embodiment, a transparent member 13 having a corrugated shape is provided instead of the transparent member 3.

  The transparent member 13 has a first main surface 13a facing the light source 2 side. In the present embodiment, the transparent member 13 has a second main surface 13 b facing the polarizing member 1. The first main surface 13a of the transparent member 13 has a wave shape. That is, the 1st main surface 13a of the transparent member 13 has a recessed part and a convex part. Further, the second main surface 13b of the transparent member 13 is also wavy. The transparent member 13 is formed by forming a transparent plate into a corrugated shape by means such as hot pressing. Moreover, it can also be set as the transparent member 13 by arrange | positioning the film-form member which has flexibility so that a corrugated shape may be provided. In the present embodiment, the convex portion of the second main surface 13b of the transparent member 13 deformed so as to have a corrugated shape is bonded to the first main surface 1a of the polarizing member 1 with an adhesive or the like.

  Since the first main surface 13a of the transparent member 13 has a concave portion and / or a convex portion like a wave shape, and the transparent member 13 reflects polarized light in various directions, the display of the outer wall of the building is possible. The range that can be observed can be expanded. In the present embodiment, since the first main surface 13a of the transparent member 13 has a wave shape along the height direction, the polarized light L1 and the polarized light L2 emitted from the light source 2 are reflected toward different directions. Thus (θ1 ≠ θ2), the range in which the display of the appearance of the building can be observed can be expanded as compared with the case where the transparent member 3 is flat as shown in FIG.

  Moreover, even if the 1st main surface 13a of the transparent member 13 is a corrugated shape as the thickness of the transparent member 13 is 0.05-5 mm, distortion may arise in the view scenery from the indoor side. The range in which the display of the outer wall of the building can be confirmed can be expanded. Moreover, if the thickness of the transparent member 13 is uniform, even if the main surface 13a of the transparent member 13 has a corrugated shape, the view scenery from the indoor side is not distorted and the outer wall of the building is displayed. Can be expanded. If the thickness of the transparent member is 2 mm or less, it is preferable for weight reduction, more preferably 1 mm or less, and if 0.5 mm or less, it becomes easy to form into a corrugated plate, preferably 0.1 mm or less. If so, molding utilizing flexibility is possible, which is more preferable.

(Other embodiments)
In the above embodiment, the light source 2 emits all the polarized light L toward the transparent members 3 and 13, but a part of the polarized light L may be emitted toward the outdoor side.
In addition, since the first main surface 13a of the transparent member 13 has a large number of small island-shaped convex portions, the transparent member 13 can reflect polarized light in various directions and can observe the display of the outer wall of the building. Can be spread. In order to prevent the main surface 13a of the transparent member 13 from surface contamination due to adhesion of raindrops, dust and the like from the outside, a transparent cover plate may be provided on the outdoor side of the transparent member 13. In order to suppress undesired reflection on the surface of the transparent cover, it is preferable to subject the surface to a treatment such as an antireflection coating.

DESCRIPTION OF SYMBOLS 1 Polarizing member 1a 1st main surface 1b 2nd main surface 2 Light source 3, 13 Transparent member 10, 20 Window structure unit 13a 1st main surface L Polarization

Claims (4)

A polarizing member having a first main surface and a second main surface and having one polarizing surface;
A light source that emits polarized light having a polarization plane substantially orthogonal to the polarization plane of the polarization member toward the first main surface of the polarization member;
A transparent member disposed between the light source and the polarizing member and capable of reflecting the polarized light emitted from the light source;
A window structure unit comprising:   The window structure unit according to claim 1, wherein the polarized light is S-polarized light with respect to an incident surface of the transparent member.   The window structure unit according to claim 1 or 2, wherein the transparent member has a main surface facing the light source, and the main surface of the transparent member has a concave portion and / or a convex portion. The thickness of the said transparent member is a window structure unit as described in any one of Claims 1-3 which is 0.05-5 mm.