JP2010084469A - Lighting glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide lighting glass having gaze shielding function while ensuring clearness, transparency and lighting properties of glass. <P>SOLUTION: The lighting glass 10 is constituted by joining at least two glass plates 12 and 14 through a transparent or translucent intermediate medium 16. An end surface 12A of the glass plate 12 is exposed through a slit 22 formed in one surface 20 of a surface structure 18, and an end surface 14B of the glass plate 14 is exposed through a slit 26 formed in the other surface 24 of the surface structure 18. According to this lighting glass 10, even if the end surface 12A of the glass plate 12 is straightly gazed from in front of an end surface 10A of the lighting glass 10, the opposite side of the glass 10 is hardly viewed since the ratio of reflection is extremely increased, compared with transmission from the viewpoint of angle, and a gaze shielding effect can be obtained. Since light incident from a direction inclined to some degree or more to the end surface 14B is emitted from the end surface 12A at the same inclination as in the incidence, and a sufficient transmitted light quantity can be ensured, lighting property can be maintained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a daylighting glass, and more particularly to a daylighting glass whose small facet is exposed in a slit formed in a surface structure such as a wooden wall surface, a concrete wall surface, or a door of a building.

  Non-Patent Document 1 discloses a daylighting glass in which a slit penetrating a surface structure such as a wooden wall surface, a concrete wall surface, or a door of a building is formed and a small surface of a single glass plate is fitted into the slit. Yes.

According to this daylighting glass, outside light (sunlight) outside the building can be taken inside the building during the daytime, and illumination light inside the building can be put outside the building at night. It can be used as illumination light.
MY HOME 100sen vol. 2 (Fusosha publication date February 2008)

  However, in a conventional daylighting glass made of a single glass plate, the transparency through direct viewing when facing the small facet of the daylighting glass is good, and the other side can be clearly seen from one side across the surface structure. From the viewpoint of privacy protection, a gaze shielding function has been required.

  Therefore, if the small edge surface of the glass is roughened by blasting, etc., the daylighting glass can have a line-of-sight shielding function, but the clearness and transparency of the glass will be lost and the characteristics of the daylighting glass cannot be demonstrated. There was a problem.

  In addition, if the small edge of the glass is covered with a curtain, the line of sight can be blocked, but the clearness and transparency of the glass will be lost and the characteristics of daylighting glass will not be exhibited. There was a problem of harm.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a daylighting glass having a line-of-sight shielding function while maintaining the clearness, transparency, and daylighting properties of glass.

  In order to achieve the above object, the present invention is a daylighting glass incorporated in a planar structure, and at least two glass plates face each other with a transparent or translucent intermediate medium therebetween. The small edge surfaces of the two glass plates are joined so as to be stepped, and projecting outward from the small edge surface of the other glass plate of the two glass plates at one of the two opposing side portions. One of the two glass plates is exposed in a slit formed in one surface of the surface structure, and the other side portion of the two opposing side surfaces is exposed to one of the two glass plates. Provided is a daylighting glass characterized in that the fore edge surface of the other glass plate projecting outward from the fore edge surface of the glass plate is exposed from a slit formed in the other surface of the surface structure. .

  Here, the characteristics of glass will be described. The refractive index of normal glass is about 1.52, while the refractive index of air is about 1. When light enters from the small edge surface of the glass plate on this assumption, the refraction angle is about 41 degrees at the maximum. That is, the refraction angle when light is incident from an angle close to the side of the facet is almost 41 degrees, and the incident angle when the light strikes the side surface of the glass plate is 49 degrees or more. In this case, the light is totally reflected on the side surface of the glass plate due to the refractive index relationship between the glass plate and air. That is, the outside of the fore edge cannot be seen from the side surface of the glass plate. Here, the side surface of the glass plate refers to a surface having a large area that exists in a direction perpendicular to the facet surface.

  By the way, when a transparent or anti-transparent intermediate medium having a refractive index of 1.15 or more (preferably 1.3 to 1.7) is brought into close contact with the side surface of the glass plate, a part of light entering from the small edge surface is obtained. The light is transmitted from the side surface of the glass plate, and the remaining light is reflected from the side surface. In other words, the outer side of the fore edge can be seen from the side surface to which the intermediate medium of the glass plate is closely attached.

  Utilizing this principle, the daylighting glass of the present invention joins at least two glass plates through a transparent or translucent intermediate medium so that the facets of the two opposing sides are stepped. Then, in one side portion of the two opposing side portions, the small edge surface of one glass plate that protrudes outward from the small edge surface of the other glass plate of the two glass plates is one of the surface structures. Of the other glass plate that is exposed from the slit formed on the surface of the glass plate and that protrudes outward from the small edge surface of one of the two glass plates at the other side of the two opposing sides. The facet surface is exposed from a slit formed on the other surface of the surface structure.

  According to the daylighting glass having such a structure, even if the facet of the daylighting glass is directly faced, for example, even if the facet of one glass plate is directly viewed, the ratio of reflection is very high compared to the transmission, and the other side. Since the amount of light transmitted through the glass is very small, the outside of the other glass is almost invisible.

  Therefore, according to the daylighting glass of the present invention, it is possible to provide a line-of-sight shielding function without roughening the facet of the glass plate. Further, in the daylighting glass of the present invention, only the light incident from the direction inclined at a predetermined angle with respect to one of the facets is emitted from the other facet with a predetermined inclination angle. Although it is reduced as compared with the glass for lighting, the daylighting property can be sufficiently maintained. Therefore, according to the daylighting glass of the present invention, it is possible to provide a line-of-sight shielding function while maintaining the clearness, transparency, and daylighting properties of the glass.

  According to the present invention, it is preferable that the fore edge surface of the glass plate is disposed substantially flush with the surface of the surface structure. Thereby, according to the present invention, the facet of the glass plate is not uneven with respect to the surface of the surface structure, and the entire surface of the surface structure becomes flat, so that the appearance of the surface structure having the daylighting glass is improved. The design will be improved.

  According to the invention, the intermediate medium is preferably a film-like member, a viscous body, or a liquid. Any intermediate medium having a refractive index of 1.15 or more (preferably 1.3 to 1.7) can be used as the intermediate medium.

  According to the present invention, it is preferable that the film-like member is colored or patterned. A unique visual effect can be provided by using a design film with a pattern such as colored or wood grain.

  As described above, according to the daylighting glass of the present invention, it is possible to provide a line-of-sight shielding function while providing the clearness, transparency, and daylighting properties of the glass.

  Hereinafter, preferred embodiments of a daylighting glass according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a top view of a daylighting glass 10 according to an embodiment, showing a basic configuration. The daylighting glass 10 is composed of two glass plates 12 and 14 formed in a rectangular shape and a transparent or translucent intermediate medium 16, and the intermediate medium 16 is sandwiched between the two glass plates 12 and 14. It is comprised by joining by.

  Further, the two glass plates 12 and 14 of the daylighting glass 10 are joined so that the small edge surfaces 12A and 14A and the small edge surfaces 12B and 14B of the two opposite side portions 10A and 10B are different by a predetermined amount. Has been.

  When constructing the daylighting glass 10 on the surface structure 18 shown in cross section, the other side of the two glass plates 12 and 14 in the side 10A of the two sides 10A and 10B facing each other. The small edge surface 12A of one glass plate 12 projecting outward from the small edge surface 14A of the glass plate 14 is exposed from the slit 22 formed on the one surface 20 of the surface structure 18. Then, the other glass projecting outward from the small edge surface 12B of one glass plate 12 of the two glass plates 12 and 14 in the other side portion 10B of the two glass plates 12 and 14 facing each other. The small edge surface 14 </ b> B of the plate 14 is exposed from the slit 26 formed on the other surface 24 of the surface structure 18. As described above, the daylighting glass 10 is applied to the surface structure 18.

  2 shows an example of a holder 28 (see FIG. 2) that holds the daylighting glass 10 applied to the surface structure 18 in the space 11 between the surface 20 and the surface 24 of the surface structure 18 of FIG. It is shown.

  The holder 28 includes a column 30 that is disposed in the space 11 and also serves as a crosspiece of the surface structure 10, and brackets 32 and 32 that sandwich the two glass plates 12 and 14 in the thickness direction. The upper side portion and the lower side portion of the daylighting glass 10 are sandwiched by the brackets 32 and 32, and the flat portion 33 of the brackets 32 and 32 is fixed to the pillar 30 by the wood screws 34 and 34, so that the daylighting glass 10 is It is held in the space 11.

  In addition, although the form of the holder 28 is not limited to this, as will be described later, the small facets 12A and 14B are held as the light incident face and the light outgoing face, so that the small face faces 12A and 14B are held. It is preferably not a holding tool that holds the upper side and the lower side of the daylighting glass 10 as shown in FIG. Moreover, although the glass 10 for lighting of embodiment was comprised by inserting | pinching the intermediate | middle medium 16 with the two glass plates 12 and 14, it is not limited to this, Three or more glass plates are used. Alternatively, it may be a daylighting glass having a different structure in which an intermediate medium is sandwiched between two adjacent glass plates. Further, the arrangement direction of the daylighting glass 10 may be the vertical direction or the horizontal direction.

  FIG. 3 is a top view of the daylighting glass 10 showing an example in which the daylighting glass 10 according to the embodiment is applied to the wall surface (surface structure) 36 of the wooden building.

  The wall surface 36 includes an outer wall base material 38, an exterior material 40, and an interior material 42. Exterior rails 44 and 44 are provided on the outer side of the outer wall base material 38 apart from each other, and the exterior material 40 is fixed to the exterior rails 44 and 44. In addition, the outer wall base material 38 is fixed to the outdoor side of the intermediate pillar 46, and the interior material 42 is fixed to the indoor side of the intermediate pillar 46. Thereby, a space 11 for arranging the daylighting glass 10 is formed between the outer wall member 38 and the interior member 42. Reference numeral 45 is an outer wall base material rail, and reference numeral 47 is an interior rail.

  The daylighting glass 10 is disposed in the space 11, and the small edge surface 12 </ b> A of the glass plate 12 is exposed from the slit 50 formed in the exterior member 40 through the slit 48 formed in the outer wall base material 38. Is done. Further, the small edge surface 14 </ b> B of the glass plate 14 is exposed from the slit 52 formed in the interior material 42. Accordingly, the daylighting glass 10 is disposed in the space 11.

  In addition, the gap surface between the slit 50 and the glass plate 12 is sealed in the small facet 12A exposed from the slit 48 by the packings 54 and 54 and the sealing materials 56 and 56. Moreover, the parting materials 58 and 58 are fixed to the circumference | surroundings of the small edge surface 14B which exposed from the slit 52 and protruded indoors. Thereby, the gap between the slit 52 and the glass plate 14 is hidden by the parting materials 58 and 58. Further, a moisture permeable waterproof sheet 60 is covered on the outdoor side surface of the outer wall base material 38, and a gap between the slit 48 and the glass plate 12 is sealed with waterproof tapes 62 and 62. The waterproof tape 62 is laid from the periphery of the slit 48 of the outer wall base material 38 toward the slit 48, is bent at a right angle, and is attached to the side surface of the glass plate 12.

  FIG. 4 is a top view of the daylighting glass 10 showing an example in which the daylighting glass 10 is constructed on a reinforced concrete wall surface (surface structure) 64.

  A slit-like through-hole 66 is formed in the concrete wall surface 64, and the daylighting glass 10 is inserted into the through-hole 66, and the small edge surface 12 </ b> A of the glass plate 12 is an outdoor opening (slit) 68 of the concrete wall surface 64. Exposed from. In addition, an interior material 72 is applied to the interior side of the concrete wall surface 64 via interior rails 70 and 70. The small end surface 14B of the glass plate 14 protrudes from the slit 74 formed in the interior material 72 and is exposed.

  The gap surface between the outdoor opening 68 and the glass plate 12 is sealed by the packings 76 and 76 and the sealing materials 78 and 78 on the small facet 12A exposed from the outdoor opening 68. Moreover, the parting materials 80 and 80 are fixed around the small facet 14B exposed from the slit 74 and protruding to the indoor side. Thereby, the gap between the slit 74 and the glass plate 14 is hidden by the parting materials 80 and 80. Further, the daylighting glass 10 is placed on the setting block 82 in the through hole 66 as shown in FIG. 5 and is positioned in the through hole 66 by a plurality of packings 84, 84.

  Here, the characteristics of the daylighting glass 10 shown in FIG. 1 will be described on the assumption that the refractive index of glass is 1.52, while the refractive index of air is about 1.

  When light is incident from the small facet 14B of the glass plate 14, the refraction angle θ1 is about 41 degrees at the maximum. In other words, the angle of refraction when light is incident on the small facet 14B from an angle close to 0 degrees is almost 41 degrees, and the incident angle θ2 when the light strikes the side surface 14C of the glass plate 14 is 49. More than degree. In this case, the light is totally reflected by the side surface 14 </ b> C of the glass plate 14 due to the refractive index relationship between the glass plate 14 and air. That is, the outer side of the fore edge surface 14B cannot be seen from the side surface 14C of the glass plate 14.

  By the way, when the transparent or anti-transparent intermediate medium 16 having a refractive index of 1.15 or more (preferably 1.3 to 1.7) is brought into close contact with the side surface 14D of the glass plate 14, the side surface 14C of the glass plate 14 is A part of the reflected light is transmitted from the side surface 14D of the glass plate 14, and the remaining light is reflected by the side surface 14D. That is, the outer side of the fore edge surface 14B can be seen from the side surface 14D side where the intermediate medium 16 of the glass plate 14 is in close contact.

  Utilizing this principle, the daylighting glass 10 of the embodiment joins at least two glass plates 12 and 14 via a transparent or translucent intermediate medium 16, and the small edge surface 12A of the glass plate 12 is The small surface 14B of the glass plate 14 is exposed from the slit 26 formed on the other surface 24 of the surface structure 18 and is exposed from the slit 22 formed on the one surface 20 of the surface structure 18. As a result, the light transmitted through the intermediate medium 16 enters the glass plate 12 from the side surface 12C of the glass plate 12, is totally reflected by the side surface 12D of the glass plate 12, and is emitted from the small edge surface 12A at a predetermined inclination angle θ3.

  Therefore, according to the daylighting glass 10 of the embodiment, even when facing the small edge surface 10A side of the daylighting glass 10 and directly viewing the small edge surface 12A of the glass plate 12, the ratio of reflection compared to transmission in terms of angle. Is so high that the opposite side of the daylighting glass 10 is hardly visible.

  Therefore, according to the daylighting glass 10 of the embodiment, it is possible to provide a line-of-sight shielding function without roughening the facet of the glass plate. Moreover, although the amount of transmitted light is reduced as compared with the conventional daylighting glass, the daylighting property can be sufficiently maintained. As described above, according to the daylighting glass 10 of the embodiment, it is possible to provide a line-of-sight shielding function while providing the clearness, transparency, and daylighting property of the glass.

  Further, according to the daylighting glass 10 of the embodiment, the facets 12A and 14B are preferably arranged substantially flush with the surfaces 20 and 24 of the surface structure 18. Thus, according to the daylighting glass 10 of the embodiment, the surfaces 20 and 24 of the surface structure 18 do not become uneven due to the facets 12A and 14B, and the entire surfaces 20 and 24 become flat. The surface structure 18 having a good appearance is improved and the design is improved.

  Furthermore, the intermediate medium 16 is preferably a film-like member, a viscous body, or a liquid. As long as the intermediate medium 16 has a refractive index of 1.15 or more (preferably 1.3 to 1.7), it may be a film-like member, a viscous body, or a liquid.

  In the case of a film-like member, it is preferable to apply an adhesive on both surfaces and bond the two glass plates 12 and 14 together. In the case of a viscous body or liquid, it is preferable to seal the enclosed space with a sealing member so that the viscous body and liquid do not leak from between the two glass plates 12 and 14.

  Furthermore, it is preferable that the film-like member is colored or patterned. Has a visual effect by using a design film such as colored, grained, or the like, or a rough glass crush pattern shown in FIG. 6, a fine glass crush pattern shown in FIG. 7, or a fine bubble pattern shown in FIG. Can be made.

  Moreover, if the color of the glass plates 12 and 14 is light green and the color of a film-like member is light pink, the transmitted light has a color tone close to an achromatic color. That is, the transmitted light is a color in which the colors of the glass plates 12 and 14 and the color of the film-like member are mixed.

  Further, the daylighting glass 10 can be incorporated into a wall surface (surface structure) of a door or an indoor partition (surface structure).

  Even when two glass plates are joined via a transparent or translucent intermediate medium so that the facets of the two opposing sides are not stepped, the same effects as in the embodiment are obtained. Obtainable. For example, it is only necessary to cover each of the opposing facets of the two glass plates with an exterior material or interior material. In addition, there may be cases where two pieces of glass that are joined so that the facets of the two opposing sides are not stepped can be applied even to the stepped portion of the surface structure. In any case, in these cases, the side surface of the glass plate and the surface of the surface structure are not flat.

Top view showing the basic structure of the daylighting glass of the embodiment Explanatory drawing of the holder which hold | maintains the glass for lighting of embodiment in a plane structure The top view by which the glass for lighting of embodiment was arranged on the wall of a wooden building Top view of daylighting glass placed on a reinforced concrete wall Vertical section of the daylighting glass shown in FIG. Illustration showing a rough glass crush pattern design film Illustration showing a design film with a fine glass crash pattern A figure showing a design film such as a fine bubble pattern

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Daylighting glass, 10A, 10B ... Small edge surface of lighting glass 10, 11 ... Space, 12 ... Glass plate, 12A, 12B ... Small edge surface of glass plate 12, 12C, 12D ... Side surface of glass plate 12, 14 ... Glass plate, 14A, 14B ... Small edge surface of glass plate 14, 14C, 14D ... Side surface of glass plate 14, 16 ... Intermediate medium, 18 ... Surface structure, 20 ... One surface of surface structure 18, 22 ... Surface structure A slit on one surface of the body 18, 24 ... the other surface of the surface structure 18, 26 ... a slit on the other surface of the surface structure 18, 28 ... a holder, 30 ... a pillar, 32 ... a bracket, 33 ... a flat part , 34 ... wood screws, 36 ... wall surface of a wooden building, 38 ... exterior wall base material, 40 ... exterior material, 42 ... interior material, 44 ... exterior rail, 45 ... exterior wall foundation rail, 46 ... stud, 47 ... interior Cross, 48 ... slit, 50 ... slit, 52 Slit, 54 ... packing, 56 ... sealing material, 58 ... parting material, 60 ... moisture permeable waterproof sheet, 62 ... waterproof tape, 64 ... concrete wall surface, 66 ... through hole, 68 ... outdoor opening, 70 ... interior beam 72 ... Interior material, 74 ... Slit, 76 ... Packing, 78 ... Sealing material, 80 ... Parting material, 82 ... Setting block, 84 ... Packing

Claims (4)

A daylighting glass incorporated into the surface structure,
At least two glass plates are joined via a transparent or translucent intermediate medium so that the facets of each of the two opposing sides are stepped,
In one of the two opposing sides, the fore surface of one of the two glass plates that protrudes outward from the fore surface of the other glass plate is the surface structure. Exposed from a slit formed on one side,
In the other side of the two opposing sides, the fore surface of the other glass plate protruding outward from the fore surface of one of the two glass plates is the surface structure. A daylighting glass that is exposed from a slit formed on the other surface.   The daylighting glass according to claim 1, wherein a fore edge surface of the glass plate is disposed substantially flush with a surface of the surface structure.   The daylighting glass according to claim 1, wherein the intermediate medium is a film-like member, a viscous body, or a liquid.   The daylighting glass according to claim 3, wherein the film-like member is colored or patterned.

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