EP0964112A1 - Transparent panel for building improving the natural brightness inside the building - Google Patents

Transparent panel for building improving the natural brightness inside the building Download PDF

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Publication number
EP0964112A1
EP0964112A1 EP99401403A EP99401403A EP0964112A1 EP 0964112 A1 EP0964112 A1 EP 0964112A1 EP 99401403 A EP99401403 A EP 99401403A EP 99401403 A EP99401403 A EP 99401403A EP 0964112 A1 EP0964112 A1 EP 0964112A1
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EP
European Patent Office
Prior art keywords
grooves
panel
building
glass sheet
glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99401403A
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German (de)
French (fr)
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EP0964112B1 (en
Inventor
Jean-Marc Halleux
Jean-Pierre Beaufays
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
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Saint Gobain Vitrage SA
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Publication of EP0964112A1 publication Critical patent/EP0964112A1/en
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Publication of EP0964112B1 publication Critical patent/EP0964112B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/54—Slab-like translucent elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S11/00—Non-electric lighting devices or systems using daylight

Definitions

  • the invention relates to a transparent panel intended to be mounted, in particular, in a building window bay and making it possible to reorient the incident natural light rays so as to homogenize the brightness at inside the building.
  • the invention will be described more particularly for a building window in which the transparent panel will be mounted so as to redirect the incident natural light rays towards the ceiling of the room in said building, but the invention is not limited to this type of application, any type of opening made in a building and able to receive a transparent panel also enters in the context of the invention.
  • a technique known to improve the level of natural light in inside a room is to deflect the natural light rays incident by through glazing so that at least some of it is reflected towards the ceiling of the room which in turn reflects them inside the room.
  • we increase the level of natural light throughout the room by modifying the distribution of light rays, in particular in the areas of the that are far from the window.
  • the means used to deflect the shelves luminous incidents through glazing consist either of the use of prisms made of a transparent material which refract the incident light ray either by using metallic surfaces which reflect the light ray incident.
  • glazing one face of which is molded so as to form a series of prisms.
  • such glazing with prismatic surface do not allow to deflect the light rays by an angle greater than 45 ° and it turns out that a deviation of an angle greater than 45 ° from solar rays are often necessary so that they can be directed towards the ceiling of the room.
  • such glazing with a prismatic surface offers, as window, a vision through said glazing which is deformed and the surface of the glazing which presents the series of prisms, is difficult to clean.
  • the present invention aims to provide a panel intended to be mounted, in particular, in a window bay of a building making it possible to deflect incident light rays at an angle greater than 45 ° so as to redirect the rays towards the ceiling of the room and thus improve the level of brightness at inside the room, offering a vision through it which is not distorted and can be cleaned without difficulty.
  • the solution consists in using a flat transparent plastic panel having a plurality of parallel laser cuts and spaced apart from each other by a regular pitch, these cuts being made perpendicular to the panel so as to divide the panel into parallelepipeds on at least part of its thickness.
  • the cutouts are protected from dust with a thin transparent sheet attached to said panel.
  • the object of the invention is to provide a panel intended to be mounted, in particular, in a window bay of a building which obviates disadvantages previously mentioned and can be implemented quickly and easily without stage of finishing the surface condition of the cuts.
  • the invention thus provides a transparent panel intended to be mounted, in particular, in a window bay of a building and making it possible to reorient incident natural light rays so as to homogenize the brightness at inside the room, the panel is such that it includes at least one sheet of glass having, on at least part of its thickness, grooves arranged horizontally and parallel to each other.
  • the grooves are laser cuts of the sheet of glass.
  • the grooves present on the surface of the glass sheet are produced by the creation of cracks whose depth is controlled. Their surface internal is optically smooth and thus allows a total reflection of the rays bright natural incidents.
  • the grooves are substantially perpendicular to the plane of the glass sheet.
  • the grooves are distributed uniformly over the surface of the glass sheet.
  • the glass sheet is part of a laminated panel and the depth of the grooves is equal to the thickness of the sheet of glass.
  • the grooves are made directly on the whole laminate and the depth of the laser cutting of the grooves is advantageously controlled by the presence of the interlayer of the laminated panel, the rest of the glass sheet being held in place by the same interlayer.
  • the ratio of the depth of the grooves on the distance between two grooves is between 0.5 and 2 and, from preferably between 1 and 2. In this way, the number of rays is optimized bright natural incidents that are going to be redirected.
  • the transparent panel is part multiple insulating glazing.
  • the surface of the panel presenting the grooves is in contact with the gas plate of the insulating multiple glazing and is thus protected from dust and moisture.
  • such a variant makes it possible to realize multiple insulating glazing combining insulating performance with advantages of glazing improving the brightness of a room.
  • the transparent panel allows, as explained above, to deviate incident light rays at an angle greater than 45 ° so as to redirect the rays towards the ceiling of the room and thus improve the level of brightness natural inside the room.
  • Such a panel also makes it possible to obtain a vision through without distortions.
  • Figure 1 shows a part of a vertical section of a panel 1 according to the invention.
  • the panel 1 consists of a glass sheet 2 on which a series of grooves 3 has been produced by a laser cutting technique such as, for example, by the technique described in European patent EP-B -0 633 867.
  • the grooves 3 have, for example, a depth of 0.8 mm for a total thickness of the glass sheet 2 of 2 mm.
  • the grooves 3 are arranged horizontally with respect to the general plane of the glass sheet 2 and are parallel to each other and spaced from each other by a pitch of 0.5 mm by for example, a depth / step ratio of 1.6.
  • the grooves 3 are perpendicular to the plane general of the glass sheet 2 and are delimited by two internal faces 4 and 5.
  • These internal faces 4 and 5 represent the walls of the crack generated by laser beam and are distant from each other, but sufficiently close so as to remain invisible to the eye.
  • An incident light ray 6 comes into contact with the glass sheet 2 on its face 7, it is deflected by refraction at the level of face 7, then by refraction total at the level of the internal face 4 of the groove 3 and again by refraction at level of the face 8 of the glass sheet 2.
  • Another incident light ray 9 comes into contact with the glass sheet 2 but from a much lower incident angle, it is then deflected only by refraction at the faces 7 and 8 of the glass sheet 2, to as far as it does not meet a groove 3.
  • FIG. 2 shows a part of a vertical section of another type of panel 1 according to the invention.
  • the panel 1 consists of two sheets of glass 10 and 11 joined together by an interlayer 12.
  • This interlayer 12 is, for example, a polyvinyl butyral sheet (PVB).
  • the glass sheet 11 has a series of grooves 3 identical to that of the Figure 1, with the difference that the glass sheet 11 is thinner than the sheet of glass 2, its thickness being identical to the depth of the grooves.
  • the glass sheet 10 has a thickness greater than that of the glass sheet 11 and thus serves as a support for the whole of the panel 1.
  • the glass sheet 10 has a thickness of 4 mm and the glass sheet 11 a thickness of 0.8 mm.
  • FIG. 3 represents a vertical section of a building room on which the panel 1 according to the invention has been mounted as a window.
  • FIG. 4 represents a part of a vertical section of a double insulating glazing in which the panel 1 according to the invention has been inserted.
  • the double insulating glazing consists of transparent panel 1 according to the invention and a glass sheet 15, the panel 1 and the glass sheet 15 being separated from each other by an air knife 16 and joined together at their periphery by means of a profiled frame here not shown in the figure and known to those skilled in the art.
  • the grooves 3 of the panel 1 are in contact with the air gap 16.
  • the invention is not limited to these types of embodiment and must be interpreted in a nonlimiting manner and encompassing any type of transparent panel intended to be mounted, in particular, in a window opening and making it possible to redirect the incident natural light rays so as to homogenize the brightness inside the building, said panel comprising a sheet of glass having, on at least part of its thickness, grooves arranged horizontally and parallel to each other.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Panels For Use In Building Construction (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Finishing Walls (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

The transparent panel has at least one sheet of glass (1) with horizontal and parallel grooves (3) made through part of its thickness. The grooves lie perpendicular to the surface of the glass sheet and are spaced at even intervals. The transparent panel can be multilayered, with the depth of the grooves equivalent to the thickness of the glass sheet, and the ratio of the grooves' depth to the distance between them being between 0.5 and 2:1, and preferably between 1 and 2:1.

Description

L'invention concerne un panneau transparent destiné à être monté, notamment, dans une baie de fenêtre de bâtiment et permettant de réorienter les rayons lumineux naturels incidents de manière à homogénéiser la luminosité à l'intérieur du bâtiment.The invention relates to a transparent panel intended to be mounted, in particular, in a building window bay and making it possible to reorient the incident natural light rays so as to homogenize the brightness at inside the building.

L'invention sera décrite plus particulièrement pour une fenêtre de bâtiment dans laquelle sera montée le panneau transparent de manière à réorienter les rayons lumineux naturels incidents vers le plafond du local dudit bâtiment, mais l'invention ne se limite pas à ce type d'application, tout type d'ouverture réalisée dans un bâtiment et apte à recevoir un panneau transparent entre également dans le cadre de l'invention.The invention will be described more particularly for a building window in which the transparent panel will be mounted so as to redirect the incident natural light rays towards the ceiling of the room in said building, but the invention is not limited to this type of application, any type of opening made in a building and able to receive a transparent panel also enters in the context of the invention.

Une technique connue pour améliorer le niveau de lumière naturelle à l'intérieur d'un local consiste à dévier les rayons lumineux naturels incidents par l'intermédiaire d'un vitrage de sorte qu'au moins une partie de ceux-ci soient réfléchis vers le plafond du local qui les refléchit à son tour vers l'intérieur du local. Ainsi, on augmente le niveau de lumière naturelle dans l'ensemble du local en modifiant la répartition des rayons lumineux, en particulier au niveau des zones du local qui sont éloignées de la fenêtre.A technique known to improve the level of natural light in inside a room is to deflect the natural light rays incident by through glazing so that at least some of it is reflected towards the ceiling of the room which in turn reflects them inside the room. Thus, we increase the level of natural light throughout the room by modifying the distribution of light rays, in particular in the areas of the that are far from the window.

De façon traditionnelle, les moyens employés pour dévier les rayons lumineux incidents par l'intermédiaire d'un vitrage consistent soit en l'utilisation de prismes faits d'un matériau transparent qui réfractent le rayon lumineux incident soit en l'utilisation de surfaces métalliques qui réfléchissent le rayon lumineux incident. Traditionally, the means used to deflect the shelves luminous incidents through glazing consist either of the use of prisms made of a transparent material which refract the incident light ray either by using metallic surfaces which reflect the light ray incident.

En particulier, il est connu d'employer des vitrages dont une face est moulée de manière à former une série de prismes. Cependant, de tels vitrages à surface prismatique ne permettent pas de dévier les rayons lumineux d'un angle supérieur à 45° et il s'avère qu'une déviation d'un angle supérieur à 45° des rayons solaires est souvent nécessaire pour que ceux-ci puissent être dirigés vers le plafond du local.In particular, it is known to use glazing, one face of which is molded so as to form a series of prisms. However, such glazing with prismatic surface do not allow to deflect the light rays by an angle greater than 45 ° and it turns out that a deviation of an angle greater than 45 ° from solar rays are often necessary so that they can be directed towards the ceiling of the room.

Par ailleurs, de tels vitrages à surface prismatique offrent, en tant que fenêtre, une vision au travers dudit vitrage qui est déformée et la surface du vitrage qui présente la série de prismes, est difficile à nettoyer.Furthermore, such glazing with a prismatic surface offers, as window, a vision through said glazing which is deformed and the surface of the glazing which presents the series of prisms, is difficult to clean.

Il est également connu d'employer des réflecteurs métalliques intégrés dans un vitrage sous la forme d'une jalousie. Cependant, de tels réflecteurs métalliques ne sont pas totalement satisfaisants. En effet, l'angle de réflexion du rayon lumineux dépend fortement de l'angle d'incidence de la lumière et les surfaces réfléchissantes sont difficiles à nettoyer et présentent un encombrement important.It is also known to use integrated metal reflectors in glazing in the form of jealousy. However, such reflectors are not entirely satisfactory. Indeed, the angle of reflection of the light ray strongly depends on the angle of incidence of light and the reflective surfaces are difficult to clean and clutter important.

La présente invention a pour but de fournir un panneau destiné à être monté, notamment, dans une baie de fenêtre d'un bâtiment permettant de dévier des rayons lumineux incidents d'un angle supérieur à 45° de manière à réorienter les rayons vers le plafond du local et ainsi d'améliorer le niveau de luminosité à l'intérieur du local, offrant une vision au travers de celui-ci qui n'est pas déformée et pouvant être nettoyé sans difficultés.The present invention aims to provide a panel intended to be mounted, in particular, in a window bay of a building making it possible to deflect incident light rays at an angle greater than 45 ° so as to redirect the rays towards the ceiling of the room and thus improve the level of brightness at inside the room, offering a vision through it which is not distorted and can be cleaned without difficulty.

Le brevet américain US 4,989,952 a déjà proposé une solution à de tels inconvénients. La solution consiste à utiliser un panneau plat en plastique transparent présentant une pluralité de découpes laser parallèles et espacées les unes des autres d'un pas régulier, ces découpes étant réalisées perpendiculairement au panneau de manière à diviser le panneau en parallélépipèdes sur au moins une partie de son épaisseur. Les découpes sont protégées des poussières à l'aide d'une feuille mince transparente fixée audit panneau.American patent US Pat . No. 4,989,952 has already proposed a solution to such drawbacks. The solution consists in using a flat transparent plastic panel having a plurality of parallel laser cuts and spaced apart from each other by a regular pitch, these cuts being made perpendicular to the panel so as to divide the panel into parallelepipeds on at least part of its thickness. The cutouts are protected from dust with a thin transparent sheet attached to said panel.

Cependant, une telle solution n'est pas totalement satisfaisante d'un point de vue optique. En effet, pour obtenir une réflexion spéculaire des rayons lumineux incidents, il est nécessaire que les faces internes des découpes au laser soient parfaitement lisses. Il est connu que la découpe laser d'une matière plastique ne permet pas d'obtenir une surface optiquement parfaitement lisse et cela du fait que, sous l'action du laser, la matière plastique fond et ne permet pas de créer un découpe nette et franche. Il s'avère donc nécessaire d'effectuer une étape supplémentaire afin de rendre les surfaces internes des découpes optiquement adéquates. Or une telle étape supplémentaire est contraignante et n'est pas toujours aisément réalisable du fait de la taille des découpes.However, such a solution is not entirely satisfactory from a point optically. Indeed, to obtain a specular reflection of the rays bright incidents, it is necessary that the inner faces of the laser cuts are perfectly smooth. It is known that the laser cutting of a material plastic does not provide an optically perfectly smooth surface and this is because, under the action of the laser, the plastic material melts and does not allow to create a clean and frank cut. It is therefore necessary to carry out a additional step to make the internal surfaces of the cutouts optically adequate. However, such an additional step is binding and is not always easily achievable because of the size of the cuts.

L'invention a pour but de fournir un panneau destiné à être monté, notamment, dans une baie de fenêtre d'un bâtiment obviant aux inconvénients précédemment cités et pouvant être mis en oeuvre rapidement et facilement sans étape de finition de l'état de surface des découpes.The object of the invention is to provide a panel intended to be mounted, in particular, in a window bay of a building which obviates disadvantages previously mentioned and can be implemented quickly and easily without stage of finishing the surface condition of the cuts.

L'invention propose ainsi un panneau transparent destiné à être monté, notamment, dans une baie de fenêtre d'un bâtiment et permettant de réorienter les rayons lumineux naturels incidents de manière à homogénéiser la luminosité à l'intérieur du local, le panneau est tel qu'il comprend au moins une feuille de verre présentant, sur au moins une partie de son épaisseur, des sillons disposés horizontalement et parallèles entre-eux.The invention thus provides a transparent panel intended to be mounted, in particular, in a window bay of a building and making it possible to reorient incident natural light rays so as to homogenize the brightness at inside the room, the panel is such that it includes at least one sheet of glass having, on at least part of its thickness, grooves arranged horizontally and parallel to each other.

De manière préférée, les sillons sont des découpes au laser de la feuille de verre. De cette manière, les sillons présents à la surface de la feuille de verre sont réalisés par la création de fissures dont on contrôle la profondeur. Leur surface interne est optiquement lisse et permet ainsi une réflexion totale des rayons lumineux naturels incidents.Preferably, the grooves are laser cuts of the sheet of glass. In this way, the grooves present on the surface of the glass sheet are produced by the creation of cracks whose depth is controlled. Their surface internal is optically smooth and thus allows a total reflection of the rays bright natural incidents.

Selon une variante avantageuse de l'invention, les sillons sont sensiblement perpendiculaires au plan de la feuille de verre.According to an advantageous variant of the invention, the grooves are substantially perpendicular to the plane of the glass sheet.

De préférence, les sillons sont répartis de manière uniforme sur la surface de la feuille de verre.Preferably, the grooves are distributed uniformly over the surface of the glass sheet.

Selon une variante avantageuse de l'invention, la feuille de verre fait partie d'un panneau feuilleté et la profondeur des sillons est égale à l'épaisseur de la feuille de verre. De cette façon, les sillons sont réalisés directement sur l'ensemble feuilleté et la profondeur de la découpe laser des sillons est avantageusement contrôlée par la présence de l'intercalaire du panneau feuilleté, le reste de la feuille de verre étant maintenu en place grâce au même intercalaire. According to an advantageous variant of the invention, the glass sheet is part of a laminated panel and the depth of the grooves is equal to the thickness of the sheet of glass. In this way, the grooves are made directly on the whole laminate and the depth of the laser cutting of the grooves is advantageously controlled by the presence of the interlayer of the laminated panel, the rest of the glass sheet being held in place by the same interlayer.

Selon une réalisation préférée de l'invention, le ratio de la profondeur des sillons sur la distance entre deux sillons est compris entre 0,5 et 2 et, de préférence, entre 1 et 2. De cette manière, on optimise le nombre de rayons lumineux naturels incidents qui vont être réorientés.According to a preferred embodiment of the invention, the ratio of the depth of the grooves on the distance between two grooves is between 0.5 and 2 and, from preferably between 1 and 2. In this way, the number of rays is optimized bright natural incidents that are going to be redirected.

Selon une variante préférée de l'invention, le panneau transparent fait parti d'un vitrage multiple isolant. De cette façon, la surface du panneau présentant les sillons est en contact avec la lame de gaz du vitrage multiple isolant et est ainsi protégée des poussières et de l'humidité. De plus, une telle variante permet de réaliser un vitrage multiple isolant combinant les performances isolantes avec les avantages d'un vitrage améliorant la luminosité d'un local.According to a preferred variant of the invention, the transparent panel is part multiple insulating glazing. In this way, the surface of the panel presenting the grooves is in contact with the gas plate of the insulating multiple glazing and is thus protected from dust and moisture. In addition, such a variant makes it possible to realize multiple insulating glazing combining insulating performance with advantages of glazing improving the brightness of a room.

Le panneau transparent permet, comme explicité précédemment, de dévier des rayons lumineux incidents d'un angle supérieur à 45° de manière à réorienter les rayons vers le plafond du local et ainsi améliorer le niveau de luminosité naturelle à l'intérieur du local. Un tel panneau permet également d'obtenir une vision au travers sans déformations.The transparent panel allows, as explained above, to deviate incident light rays at an angle greater than 45 ° so as to redirect the rays towards the ceiling of the room and thus improve the level of brightness natural inside the room. Such a panel also makes it possible to obtain a vision through without distortions.

D'autres détails et caractéristiques avantageuses de l'invention ressortiront, ci-après, de la description d'exemples de réalisation de l'invention en référence aux figures 1, 2, 3 et 4 qui représentent :

  • Figure 1 : une coupe verticale d'un panneau selon l'invention.
  • Figure 2 : une coupe verticale d'un autre type de panneau selon l'invention.
  • Figure 3 : une coupe verticale d'un local de bâtiment sur lequel le panneau selon l'invention a été monté en tant que fenêtre.
  • Figure 4 : une coupe verticale d'un vitrage double dans lequel a été inséré le panneau selon l'invention.
Other details and advantageous characteristics of the invention will emerge below from the description of exemplary embodiments of the invention with reference to FIGS. 1, 2, 3 and 4 which represent:
  • Figure 1 : a vertical section of a panel according to the invention.
  • Figure 2 : a vertical section of another type of panel according to the invention.
  • Figure 3 : a vertical section of a building room on which the panel according to the invention has been mounted as a window.
  • Figure 4 : a vertical section of a double glazing in which the panel according to the invention has been inserted.

On précise tout d'abord que, par souci de clarté, toutes les figures ne respectent pas rigoureusement les proportions entre les divers éléments représentés.It should be noted first of all that, for the sake of clarity, all the figures do not not strictly respect the proportions between the various elements represented.

La figure 1 représente une partie d'une coupe verticale d'un panneau 1 selon l'invention. Figure 1 shows a part of a vertical section of a panel 1 according to the invention.

Selon cette représentation, la panneau 1 est constitué d'une feuille de verre 2 sur laquelle une série de sillons 3 a été réalisée par une technique de découpe au laser telle que, par exemple, par la technique décrite dans le brevet européen EP-B-0 633 867. According to this representation, the panel 1 consists of a glass sheet 2 on which a series of grooves 3 has been produced by a laser cutting technique such as, for example, by the technique described in European patent EP-B -0 633 867.

Les sillons 3 ont, par exemple, une profondeur de 0,8 mm pour une épaisseur totale de la feuille de verre 2 de 2 mm. Les sillons 3 sont disposés horizontalement par rapport au plan général de la feuille de verre 2 et sont parallèles entre-eux et distants les uns des autres d'un pas de 0,5 mm par exemple, soit un ratio profondeur/pas de 1,6.The grooves 3 have, for example, a depth of 0.8 mm for a total thickness of the glass sheet 2 of 2 mm. The grooves 3 are arranged horizontally with respect to the general plane of the glass sheet 2 and are parallel to each other and spaced from each other by a pitch of 0.5 mm by for example, a depth / step ratio of 1.6.

Selon cette représentation, les sillons 3 sont perpendiculaires au plan général de la feuille de verre 2 et sont délimités par deux faces internes 4 et 5.According to this representation, the grooves 3 are perpendicular to the plane general of the glass sheet 2 and are delimited by two internal faces 4 and 5.

Ces faces internes 4 et 5 représentent les parois de la fissure générée par rayon laser et sont distantes l'une de l'autre, mais de manière suffisamment proches de manière à rester invisible à l'oeil.These internal faces 4 and 5 represent the walls of the crack generated by laser beam and are distant from each other, but sufficiently close so as to remain invisible to the eye.

Un rayon lumineux 6 incident arrive au contact de la feuille de verre 2 sur sa face 7, il est dévié par réfraction au niveau de la face 7, puis par réfraction totale au niveau de la face interne 4 du sillon 3 et à nouveau par réfraction au niveau de la face 8 de la feuille de verre 2.An incident light ray 6 comes into contact with the glass sheet 2 on its face 7, it is deflected by refraction at the level of face 7, then by refraction total at the level of the internal face 4 of the groove 3 and again by refraction at level of the face 8 of the glass sheet 2.

Un autre rayon lumineux 9 incident arrive en contact avec la feuille de verre 2 mais sous un angle incident beaucoup plus faible, celui-ci est alors dévié uniquement par réfraction au niveau des faces 7 et 8 de la feuille de verre 2, pour autant qu'il ne rencontre pas de sillon 3.Another incident light ray 9 comes into contact with the glass sheet 2 but from a much lower incident angle, it is then deflected only by refraction at the faces 7 and 8 of the glass sheet 2, to as far as it does not meet a groove 3.

De cette manière, on observe que les rayons lumineux ayant un grand angle d'incidence, sont totalement déviés vers le plafond du local et que les rayons lumineux ayant un petit angle d'incidence ne sont pas obligatoirement réfléchis par les faces internes 4 des sillons. Ainsi, quel que soit l'angle d'incidence, on garde une constance en luminosité dans l'ensemble du local.In this way, it is observed that the light rays having a large angle of incidence, are totally deflected towards the ceiling of the room and that the light rays with a small angle of incidence are not necessarily reflected by the internal faces 4 of the grooves. So whatever the angle incidence, there is consistency in brightness throughout the room.

Par ailleurs, il est évident que tous les rayons réfractés au niveau de la face 7 de la feuille de verre 2 dans une direction parallèle aux sillons 3 vont traversés le panneau 1 sans être déviés. Ainsi, la vision au travers du panneau 1 dans des directions sensiblement parallèles aux angles des découpes 3 ne va pas être déformée.In addition, it is obvious that all the rays refracted at the level of the face 7 of the glass sheet 2 in a direction parallel to the grooves 3 go through panel 1 without being deflected. Thus, the vision through the panel 1 in directions substantially parallel to the angles of the cutouts 3 is not going to be distorted.

La figure 2 représente une partie d'une coupe verticale d'un autre type de panneau 1 selon l'invention. 2 shows a part of a vertical section of another type of panel 1 according to the invention.

Selon cette représentation, le panneau 1 est constitué de deux feuilles de verre 10 et 11 réunies ensemble par l'intermédiaire d'un intercalaire 12. Cet intercalaire 12 est, par exemple, une feuille de polyvinylbutyral (PVB). On observe que la feuille de verre 11 présente une série de sillons 3 identique à celle de la figure 1, à la différence que la feuille de verre 11 est moins épaisse que la feuille de verre 2, son épaisseur étant identique à la profondeur des sillons. Avantageusement, la feuille de verre 10 présente une épaisseur supérieure à celle de la feuille de verre 11 et ainsi, sert de support à l'ensemble du panneau 1. Par exemple, la feuille de verre 10 a une épaisseur de 4 mm et la feuille de verre 11 une épaisseur de 0,8 mm.According to this representation, the panel 1 consists of two sheets of glass 10 and 11 joined together by an interlayer 12. This interlayer 12 is, for example, a polyvinyl butyral sheet (PVB). We observe that the glass sheet 11 has a series of grooves 3 identical to that of the Figure 1, with the difference that the glass sheet 11 is thinner than the sheet of glass 2, its thickness being identical to the depth of the grooves. Advantageously, the glass sheet 10 has a thickness greater than that of the glass sheet 11 and thus serves as a support for the whole of the panel 1. For example, the glass sheet 10 has a thickness of 4 mm and the glass sheet 11 a thickness of 0.8 mm.

La figure 3 représente une coupe verticale d'un local de bâtiment sur lequel le panneau 1 selon l'invention a été monté en tant que fenêtre. FIG. 3 represents a vertical section of a building room on which the panel 1 according to the invention has been mounted as a window.

Selon cette représentation, on observe clairement le chemin suivi par deux types de rayon incident. Le rayon 12 présente un petit angle d'incidence, et traverse le panneau 1 sans déviation importante par simple réfraction. Ainsi, le fond du local reste illuminé. Le rayon 13 présente, par contre, un grand angle d'incidence et est dévié lors de son passage au travers du panneau 1 vers le plafond du local, ledit plafond réfléchissant alors de manière diffuse le rayon 13 vers l'ensemble du local. Ainsi, lorsque les rayons lumineux incidents arrive selon un grand angle, la luminosité de la pièce reste homogène.According to this representation, we clearly observe the path followed by two incident ray types. The radius 12 has a small angle of incidence, and crosses the panel 1 without significant deviation by simple refraction. So the background of the room remains illuminated. Ray 13, on the other hand, has a wide angle incidence and is deflected as it passes through panel 1 towards the ceiling of the room, said ceiling then diffusely reflecting the beam 13 towards the whole room. So when the incident light rays arrive according to a wide angle, the brightness of the room remains uniform.

Afin de mieux comparer les avantages du panneau 1 selon l'invention, nous avons représenté en pointillé le chemin qu'aurait effectué le rayon 13 en traversant une feuille de verre banale, ce chemin étant référencé 14. Par ailleurs, il est évident que le rayon 12 qui passerait au travers d'une banale feuille de verre, suiverait le même chemin que celui représenté sur la figure.In order to better compare the advantages of panel 1 according to the invention, we we have shown in dotted the path that would have taken the ray 13 in crossing a banal sheet of glass, this path being referenced 14. Furthermore, it is obvious that the ray 12 which would pass through an ordinary sheet of glass, would follow the same path as that shown in the figure.

La figure 4 représente une partie d'une coupe verticale d'un vitrage double isolant dans lequel a été inséré le panneau 1 selon l'invention. FIG. 4 represents a part of a vertical section of a double insulating glazing in which the panel 1 according to the invention has been inserted.

Selon cette représentation, le vitrage double isolant est constitué du panneau transparent 1 selon l'invention et d'une feuille de verre 15, le panneau 1 et la feuille de verre 15 étant séparés l'un de l'autre par une lame d'air 16 et réunis à leur périphérie par l'intermédiaire d'un cadre profilé ici non représenté sur la figure et connu de l'homme du métier. De manière avantageuse, les sillons 3 du panneau 1 sont en contact avec la lame d'air 16. Une telle réalisation permet d'obtenir un vitrage isolant connu qui permet, en plus, de réorienter les rayons lumineux incidents et cela sans augmenter l'épaisseur totale du vitrage isolant.According to this representation, the double insulating glazing consists of transparent panel 1 according to the invention and a glass sheet 15, the panel 1 and the glass sheet 15 being separated from each other by an air knife 16 and joined together at their periphery by means of a profiled frame here not shown in the figure and known to those skilled in the art. Advantageously, the grooves 3 of the panel 1 are in contact with the air gap 16. Such an embodiment allows to obtain a known insulating glazing which makes it possible, in addition, to reorient the rays luminous incidents without increasing the total thickness of the insulating glass.

L'invention ne se limite pas à ces types de réalisation et doit être interprétée de façon non limitative et englobant tout type de panneau transparent destiné à être monté, notamment, dans une baie de fenêtre et permettant de réorienter les rayons lumineux naturels incidents de manière à homogénéiser la luminosité à l'intérieur du bâtiment, ledit panneau comprenant une feuille de verre présentant, sur au moins une partie de son épaisseur, des sillons disposés horizontalement et parallèles entre-eux.The invention is not limited to these types of embodiment and must be interpreted in a nonlimiting manner and encompassing any type of transparent panel intended to be mounted, in particular, in a window opening and making it possible to redirect the incident natural light rays so as to homogenize the brightness inside the building, said panel comprising a sheet of glass having, on at least part of its thickness, grooves arranged horizontally and parallel to each other.

Claims (7)

Panneau transparent destiné à être monté, notamment, dans une baie de fenêtre d'un bâtiment et permettant de réorienter les rayons lumineux naturels incidents de manière à homogénéiser la luminosité à l'intérieur du bâtiment, caractérisé en ce qu'il comprend au moins une feuille de verre présentant, sur au moins une partie de son épaisseur, des sillons disposés horizontalement et parallèles entre-eux.Transparent panel intended to be mounted, in particular, in a window opening of a building and making it possible to redirect the incident natural light rays so as to homogenize the brightness inside the building, characterized in that it comprises at least one sheet of glass having, over at least part of its thickness, grooves arranged horizontally and parallel to each other. Panneau selon la revendication 1, caractérisé en ce que les sillons sont des découpes au laser de la feuille de verre.Panel according to claim 1, characterized in that the grooves are laser cuts of the glass sheet. Panneau selon la revendication 1 ou 2, caractérisé en ce que les sillons sont sensiblement perpendiculaires au plan de la feuille de verre.Panel according to claim 1 or 2, characterized in that the grooves are substantially perpendicular to the plane of the glass sheet. Panneau selon l'une des revendications 1 à 3, caractérisé en ce que les sillons sont répartis de manière uniforme sur la surface de la feuille de verre.Panel according to one of claims 1 to 3, characterized in that the grooves are distributed uniformly over the surface of the glass sheet. Panneau selon l'une des revendications précédentes, caractérisé en ce que la feuille de verre fait partie d'un panneau feuilleté et en ce que la profondeur des sillons est égale à l'épaisseur de la feuille de verre.Panel according to one of the preceding claims, characterized in that the glass sheet is part of a laminated panel and in that the depth of the grooves is equal to the thickness of the glass sheet. Panneau selon l'une des revendications 1 à 5, caractérisé en ce que le ratio de la profondeur des sillons sur la distance entre deux sillons est compris entre 0,5 et 2 et, de préférence, entre 1 et 2.Panel according to one of claims 1 to 5, characterized in that the ratio of the depth of the furrows to the distance between two furrows is between 0.5 and 2 and, preferably, between 1 and 2. Panneau selon l'une des revendications précédentes, caractérisé en ce qu'il fait parti d'un vitrage multiple isolant.Panel according to one of the preceding claims, characterized in that it is part of an insulating multiple glazing.
EP99401403A 1998-06-10 1999-06-10 Transparent panel for building improving the natural brightness inside the building Expired - Lifetime EP0964112B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9807275A FR2779755B1 (en) 1998-06-10 1998-06-10 TRANSPARENT PANEL FOR A BUILDING IMPROVING NATURAL BRIGHTNESS INSIDE THE BUILDING
FR9807275 1998-06-10

Publications (2)

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EP0964112A1 true EP0964112A1 (en) 1999-12-15
EP0964112B1 EP0964112B1 (en) 2004-01-21

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EP99401403A Expired - Lifetime EP0964112B1 (en) 1998-06-10 1999-06-10 Transparent panel for building improving the natural brightness inside the building

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EP (1) EP0964112B1 (en)
AT (1) ATE258257T1 (en)
DE (1) DE69914256T2 (en)
ES (1) ES2213990T3 (en)
FR (1) FR2779755B1 (en)
PT (1) PT964112E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112659055A (en) * 2020-12-15 2021-04-16 南京凡芽智能设备有限公司 Method for manufacturing and processing building glass curtain wall

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092322A1 (en) * 1982-04-18 1983-10-26 Yitzchak Bar Yonah Selectively light transmitting panel
US4989952A (en) * 1987-11-06 1991-02-05 Edmonds Ian R Transparent light deflecting panel for daylighting rooms
JPH04265243A (en) * 1991-02-21 1992-09-21 Kosaka Kenkyusho:Kk Cutting method of glass panel
EP0538728A1 (en) * 1991-10-23 1993-04-28 Helmut Frank Ottomar Prof. Dr.-Ing. Müller Light conductive device
EP0577445A1 (en) * 1992-06-03 1994-01-05 Saint-Gobain Vitrage International Light diffusing glass block
WO1994025792A2 (en) * 1993-05-04 1994-11-10 Milner Peter J An optical component suitable for use in glazing
EP0633867B1 (en) * 1992-04-02 1996-08-21 Fonon Technology Limited Splitting of non-metallic materials

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092322A1 (en) * 1982-04-18 1983-10-26 Yitzchak Bar Yonah Selectively light transmitting panel
US4989952A (en) * 1987-11-06 1991-02-05 Edmonds Ian R Transparent light deflecting panel for daylighting rooms
JPH04265243A (en) * 1991-02-21 1992-09-21 Kosaka Kenkyusho:Kk Cutting method of glass panel
EP0538728A1 (en) * 1991-10-23 1993-04-28 Helmut Frank Ottomar Prof. Dr.-Ing. Müller Light conductive device
EP0633867B1 (en) * 1992-04-02 1996-08-21 Fonon Technology Limited Splitting of non-metallic materials
EP0577445A1 (en) * 1992-06-03 1994-01-05 Saint-Gobain Vitrage International Light diffusing glass block
WO1994025792A2 (en) * 1993-05-04 1994-11-10 Milner Peter J An optical component suitable for use in glazing

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112659055A (en) * 2020-12-15 2021-04-16 南京凡芽智能设备有限公司 Method for manufacturing and processing building glass curtain wall

Also Published As

Publication number Publication date
EP0964112B1 (en) 2004-01-21
ES2213990T3 (en) 2004-09-01
DE69914256T2 (en) 2004-11-18
DE69914256D1 (en) 2004-02-26
ATE258257T1 (en) 2004-02-15
PT964112E (en) 2004-06-30
FR2779755B1 (en) 2000-07-21
FR2779755A1 (en) 1999-12-17

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