FR2987323A1 - Luminous glazing for vehicle i.e. car, has light source comprising transmitter, and extraction unit arranged on one of main faces of glass leaf, where extraction unit comprises focusing unit for focusing extracted light - Google Patents

Luminous glazing for vehicle i.e. car, has light source comprising transmitter, and extraction unit arranged on one of main faces of glass leaf, where extraction unit comprises focusing unit for focusing extracted light Download PDF

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Publication number
FR2987323A1
FR2987323A1 FR1251671A FR1251671A FR2987323A1 FR 2987323 A1 FR2987323 A1 FR 2987323A1 FR 1251671 A FR1251671 A FR 1251671A FR 1251671 A FR1251671 A FR 1251671A FR 2987323 A1 FR2987323 A1 FR 2987323A1
Authority
FR
France
Prior art keywords
light
glass sheet
glazing
light source
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.)
Withdrawn
Application number
FR1251671A
Other languages
French (fr)
Inventor
Frederic Guidez
Dall Christophe Le
Whilk Marcelino Goncalves
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to FR1251671A priority Critical patent/FR2987323A1/en
Publication of FR2987323A1 publication Critical patent/FR2987323A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10155—Edge treatment or chamfering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
    • B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10541—Functional features of the laminated safety glass or glazing comprising a light source or a light guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/20—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for lighting specific fittings of passenger or driving compartments; mounted on specific fittings of passenger or driving compartments
    • B60Q3/208—Sun roofs; Windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/76—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for spotlighting, e.g. reading lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/80—Circuits; Control arrangements
    • B60Q3/85—Circuits; Control arrangements for manual control of the light, e.g. of colour, orientation or intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

The glazing has a glass leaf (5) comprising two main faces (52, 53) and a slice (51). A light source (7) comprises a transmitter that is extended to the slice of the glass leaf. An extraction unit (9) extracts the light emitted by the light source and guided by the glass leaf. The extraction unit is arranged on one of the main faces of the glass leaf. The extraction unit comprises a focusing unit (20) for focusing the extracted light. The focusing unit is fixed on the main face of the glass leaf with a connection kneecap.

Description

"VITRAGE LUMINEUX POUR VEHICULE AUTOMOBILE" L'invention concerne un vitrage lumineux pour un véhicule de type automobile, notamment un vitrage 5 lumineux pour un toit panoramique en verre. Actuellement, pour faire une vitre de toit panoramique éclairante telle qu'illustrée en figure 1, un vitrage lumineux est utilisé. Ce vitrage lumineux 10 comporte une barre comprenant des sources lumineuses 7 positionnées en regard d'une tranche 51 d'une feuille de verre 5 réalisant un verre intérieur de la vitre de toit panoramique, de telle manière à ce que la lumière 10 issue des sources lumineuses 7 puisse entrer et se 15 propager par réflexion dans la feuille de verre 5. La barre de source lumineuse 7 est intégrée dans la vitre de toit panoramique dans une encapsulation 1 comprenant un faisceau d'alimentation 6 des sources lumineuses de la barre de source lumineuse 7. De la colle 8 assemble la 20 barre de source lumineuse 7 à la tranche 51 de la feuille de verre 5. Une sérigraphie d'extraction de lumière 9 est réalisée sur une portion d'une face inférieure 52 de la feuille de verre 5. Cette sérigraphie d'extraction de lumière 9 permet de faire sortir la lumière 10 qui se 25 propage par réflexion dans la feuille de verre 5 en un flux 11 vers l'intérieur de l'habitacle du véhicule automobile. Ainsi, l'occupant bénéficie d'un flux lumineux pour éclairer l'habitacle ou lire. Un exemple d'un tel vitrage lumineux est décrit dans le document EP 30 0 856 615. Toutefois, la sérigraphie d'extraction 9 diffuse la lumière selon un flux lumineux 11 dans toutes les directions. En effet, la sérigraphie d'extraction 9 se comporte comme une source lumineuse lambersienne. Comparée à une liseuse classique d'un habitacle de véhicule automobile qui concentre la lumière dans un cône prédéfini, la sérigraphie d'extraction de lumière 9 précédemment décrite génère un flux lumineux 11 qui éclaire l'ensemble de l'habitacle et génère ainsi de l'inconfort : les autres passagers sont éblouis, il y a de la réflexion lumineuse sur le tableau de bord ou dans les cadrans de conduite ou encore cela génère un éblouissement dans le rétroviseur intérieur, ce qui perturbe le conducteur. Un but de l'invention est de fournir un vitrage 15 lumineux présentant des moyens d'extraction de la lumière qui ne se comportent pas comme une source lumineuse lambersienne. A cette fin, il est prévu, selon l'invention, un 20 vitrage lumineux pour un véhicule automobile comportant : - une feuille de verre comportant des première et deuxième faces principales et une tranche ; une source lumineuse comportant une face émettrice agencée de sorte à ce que la face émettrice 25 s'étende en regard de la tranche de la feuille de verre ; et, - des moyens d'extraction d'une lumière émise par la source lumineuse et guidée par la feuille de verre, les moyens d'extraction étant aménagés sur une des 30 première et deuxième faces de la feuille de verre, caractérisé en ce que les moyens d'extraction comportent des moyens de concentration de la lumière extraite. The invention relates to a luminous glazing for a vehicle of the automotive type, in particular a luminous glazing for a panoramic glass roof. Currently, to make an illuminating panoramic roof window as illustrated in Figure 1, a bright glazing is used. This luminous glazing unit 10 comprises a bar comprising light sources 7 positioned facing a slice 51 of a glass sheet 5 forming an inside glass of the panoramic roof pane, so that the light 10 coming from the sources The light source bar 7 is integrated in the panoramic roof pane in an encapsulation 1 comprising a feed beam 6 of the light sources of the source bar. 7. Glue 8 assembles the light source bar 7 at the slice 51 of the glass sheet 5. A light extraction screen printing 9 is made on a portion of a lower face 52 of the glass sheet 5. This light extraction screen printing 9 makes it possible to release the light 10 which propagates by reflection into the glass sheet 5 into a flow 11 towards the inside of the passenger compartment of the automobile vehicle. e. Thus, the occupant has a luminous flux to illuminate the cabin or read. An example of such a luminous glazing is described in EP 30 0 856 615. However, the extraction screen printing 9 diffuses the light according to a luminous flux 11 in all directions. Indeed, the silkscreen extraction 9 behaves as a lambersian light source. Compared to a conventional reading lamp of a passenger compartment of a motor vehicle which concentrates the light in a predefined cone, the light extraction screenprinting screen 9 previously described generates a luminous flux 11 which illuminates the entire passenger compartment and thus generates light. Discomfort: Other passengers are dazzled, there is bright reflection on the dashboard or in the driving dials or it generates a glare in the rearview mirror, which disturbs the driver. An object of the invention is to provide a luminous glazing having light extraction means which does not behave as a Lambersian light source. For this purpose, it is provided, according to the invention, a luminous glazing for a motor vehicle comprising: - a glass sheet having first and second main faces and a wafer; a light source comprising an emitter face arranged so that the emitting face 25 extends opposite the edge of the glass sheet; and, means for extracting a light emitted by the light source and guided by the glass sheet, the extraction means being arranged on one of the first and second faces of the glass sheet, characterized in that the extraction means comprise means for concentrating the extracted light.

Ainsi, la présence de moyens de concentration de la lumière extraite au sein des moyens d'extraction de la lumière prévus sur le vitrage lumineux permettent d'orienter et de concentrer la lumière dans un cône prédéfini comme une liseuse classique d'un habitacle de véhicule automobile et évite ainsi le comportement des moyens d'extraction comme une source lumineuse lambersienne. Thus, the presence of means for concentrating the light extracted within the light extraction means provided on the luminous glazing makes it possible to orient and concentrate the light in a predefined cone such as a conventional reading lamp of a vehicle interior. automobile and thus avoids the behavior of the extraction means as a lambersian light source.

Avantageusement, mais facultativement, le vitrage lumineux présente au moins l'une des caractéristiques suivantes : - les moyens de concentration comprennent un système de lentilles ; - les moyens de concentration sont montés mobiles à rotation par rapport à la feuille de verre selon au moins un axe parallèle à l'une des première et deuxième faces de la feuille de verre ; - les moyens de concentrations sont fixés sur l'une 20 des première et deuxième faces de la feuille de verre avec une liaison rotule ; - les moyens de concentration sont fixés sur une encapsulation de la feuille de verre avec une liaison rotule ; 25 - les moyens d'extraction comportent en outre une sérigraphie d'extraction aménagée sur une partie de l'une des première et deuxième faces de la feuille de verre ; - les moyens de concentration sont intégrés à la sérigraphie d'extraction ; et 30 - la source lumineuse comporte des LEDs. L'invention vise également un véhicule comportant un toit panoramique, qui comporte un vitrage lumineux tel que précédemment défini. 35 D'autres caractéristiques et avantages de l'invention apparaitront lors de la description ci-après de deux modes de réalisation de l'invention ainsi que d'une variante de réalisation. Aux dessins annexés : - la figure 1 est une vue schématique partielle en coupe d'une vitre de toit panoramique comportant un 5 vitrage lumineux de l'art antérieur ; - la figure 2 est une vue schématique partielle en coupe d'une vitre de toit panoramique comportant un vitrage lumineux selon un premier mode de réalisation de l'invention ; 10 - la figure 3 est une vue schématique partielle en coupe d'une vitre de toit panoramique comportant un vitrage lumineux selon un deuxième mode de réalisation de l'invention ; et - la figure 4 est une vue partielle schématique et 15 en coupe d'une vitre de toit panoramique comportant une variante de réalisation d'un vitrage lumineux selon l'invention de la figure 3. Nous allons maintenant décrire un mode de 20 réalisation préféré d'un vitrage lumineux selon l'invention appliqué à une vitre de toit panoramique de véhicule automobile. Il est à noter que cette application à une vitre de toit panoramique n'est pas restrictive et que le vitrage lumineux selon l'invention peut être 25 appliqué à tout autre dispositif dans lequel un tel vitrage lumineux peut être utilisé. En référence à la figure 1, une vitre de toit panoramique comporte une première feuille de verre 2, 30 correspondant à la vitre externe qui est de préférence colorée. La vitre de toit panoramique comporte une deuxième feuille de verre 5 qui s'étend en regard de la première feuille de verre 2 et qui forme la vitre interne de la vitre de toit panoramique. Cette deuxième feuille de verre 5 s'étend en regard de la première feuille de verre 2 de sorte à ce qu'une face supérieure 53 de la deuxième feuille de verre 5 est collée à la première feuille de verre 2 à l'aide d'une couche de matériau adhésif 4, comme du polyvinyle de butyral (ou PVB). Sur une périphérie de la première feuille de verre 2, la vitre de toit panoramique comporte une bande d'émail noir 3 appliquée au niveau d'une surface inférieure de la première feuille de verre 2. Au niveau d'une périphérie de la vitre de toit panoramique, cette dernière comporte une encapsulation 1 qui comprend une source lumineuse 7, par exemple une barre lumineuse comportant une série de LEDs dont une face émettrice d'un rayonnement lumineux s'étend en regard d'une tranche 51 de la deuxième feuille de verre 5. Afin d'assurer le bon positionnement de cette face émettrice de la source lumineuse 7 par rapport à la tranche 51 de la deuxième feuille de verre 5, la source lumineuse est liée à la deuxième feuille de verre 5 l'aide d'une colle 8. Enfin, la vitre de toit panoramique en verre comporte des moyens d'alimentation 6 de la source lumineuse 7 qui se présente, ici, sous la forme d'un faisceau d'alimentation connu en soi. Lors d'un fonctionnement de la source lumineuse 7, la deuxième feuille de verre 5 se comporte comme un guide d'ondes lumineuses dans lequel le faisceau lumineux 10 émis par la source lumineuse 7 se propage par réflexion sur la face supérieure 53 et une face inférieure 52 de la deuxième feuille de verre 5. Afin de permettre l'extraction du faisceau lumineux 10 ainsi guidé dans la deuxième feuille de verre 5, la deuxième feuille de verre 5 comporte au niveau de sa face inférieure 52 des moyens d'extraction 9. Ces moyens d'extraction 9, lorsqu'ils sont touchés par un rayon du faisceau lumineux 10, sont agencés de sorte à permettre à ce rayon lumineux de sortir de la deuxième feuille de verre 5 en un rayon lumineux extrait 11. Les moyens d'extraction 9 comportent ici une sérigraphie réalisée sur une portion de la face inférieure 52, cette sérigraphie est appelée sérigraphie d'extraction de lumière. Elle est ici réalisée selon des moyens connus en soi. Le rayonnement lumineux 11 ainsi extrait par les moyens d'extraction 9 se propage alors à l'intérieur de l'habitacle du véhicule. En regard de la figure 2, nous allons maintenant décrire un premier mode de réalisation d'un vitrage lumineux selon l'invention. Le vitrage lumineux selon l'invention se différencie du vitrage lumineux précédemment décrit en référence à la figure 1 par le fait que les moyens d'extraction comportent des moyens de concentration de la lumière extraite 20 qui sont, ici, intégrés dans la sérigraphie d'extraction de la lumière 9. Ici, les moyens de concentration de la lumière extraite 20 se présentent sous la forme d'un système de lentilles comportant une série de lentilles 21 qui permettent de concentrer le rayonnement lumineux extrait en un rayonnement concentré 12 selon un cône prédéfini. Advantageously, but optionally, the luminous glazing has at least one of the following characteristics: the concentration means comprise a lens system; - The concentrating means are rotatably mounted relative to the glass sheet according to at least one axis parallel to one of the first and second faces of the glass sheet; the concentration means are fixed on one of the first and second faces of the glass sheet with a ball joint; - The concentration means are fixed on an encapsulation of the glass sheet with a ball joint; The extraction means furthermore comprise an extraction screen printing made on a part of one of the first and second faces of the glass sheet; the concentration means are integrated in the extraction screen printing; and the light source comprises LEDs. The invention also relates to a vehicle comprising a panoramic roof, which comprises a luminous glazing as previously defined. Other features and advantages of the invention will appear in the following description of two embodiments of the invention as well as an alternative embodiment. In the accompanying drawings: - Figure 1 is a partial schematic sectional view of a panoramic roof pane comprising a light glazing of the prior art; - Figure 2 is a partial schematic sectional view of a panoramic roof pane comprising a light pane according to a first embodiment of the invention; FIG. 3 is a partial schematic sectional view of a panoramic roof pane comprising a luminous pane according to a second embodiment of the invention; and FIG. 4 is a schematic sectional view of a panoramic roof pane comprising an alternative embodiment of a luminous glazing unit according to the invention of FIG. 3. We will now describe a preferred embodiment a luminous glazing according to the invention applied to a panoramic roof window of a motor vehicle. It should be noted that this application to a panoramic roof window is not restrictive and that the luminous glazing according to the invention can be applied to any other device in which such a luminous glazing can be used. Referring to Figure 1, a panoramic roof pane comprises a first glass sheet 2, 30 corresponding to the outer pane which is preferably colored. The panoramic roof pane comprises a second glass sheet 5 which extends opposite the first glass sheet 2 and which forms the inner pane of the panoramic roof pane. This second glass sheet 5 extends facing the first glass sheet 2 so that an upper face 53 of the second glass sheet 5 is glued to the first glass sheet 2 with the aid of a layer of adhesive material 4, such as polyvinyl butyral (or PVB). On a periphery of the first glass sheet 2, the panoramic roof pane comprises a black enamel strip 3 applied at a lower surface of the first glass sheet 2. At a periphery of the glass pane panoramic roof, the latter comprises an encapsulation 1 which comprises a light source 7, for example a light bar comprising a series of LEDs, a face emitting a light radiation extends opposite a wafer 51 of the second sheet of 5. In order to ensure the correct positioning of this emitting face of the light source 7 with respect to the wafer 51 of the second glass sheet 5, the light source is bonded to the second glass sheet 5 by means of Finally, the glass panoramic roof pane comprises means 6 for supplying the light source 7 which is here in the form of a power supply beam known per se. During operation of the light source 7, the second glass sheet 5 behaves like a light waveguide in which the light beam 10 emitted by the light source 7 propagates by reflection on the upper face 53 and a face lower part 52 of the second sheet of glass 5. In order to allow the extraction of the light beam 10 thus guided in the second sheet of glass 5, the second sheet of glass 5 has at its lower face 52 extraction means 9 These extraction means 9, when they are touched by a ray of the light beam 10, are arranged so as to allow this light ray to emerge from the second glass sheet 5 into an extracted light ray 11. 9 extraction here comprise a screen printing performed on a portion of the lower face 52, this screen printing is called screen printing light extraction. It is here carried out according to means known per se. The light radiation 11 thus extracted by the extraction means 9 then propagates inside the passenger compartment of the vehicle. With reference to FIG. 2, we will now describe a first embodiment of a luminous glazing unit according to the invention. The luminous glazing according to the invention differs from the light glazing previously described with reference to FIG. 1 in that the extraction means comprise means for concentrating the extracted light, which are here incorporated into the screen printing of Here, the means for concentrating the extracted light 20 are in the form of a lens system comprising a series of lenses 21 which make it possible to concentrate the extracted light radiation into a concentrated radiation 12 according to a cone. predefined.

Dans ce premier mode de réalisation, la série de lentilles 21 est directement intégrée dans la sérigraphie d'extraction de lumière 9. En variante de réalisation, la série de lentilles 21 sont réalisées avec un matériau différent d'un matériau utilisé pour réaliser la sérigraphie d'extraction de lumière 9. De ce fait, la sérigraphie d'extraction lumineuse 9, qui précédemment illustrée à la figure 1 était plane, bidimensionnelle, devient, dès lors, tridimensionnelle. Une telle série de lentilles permet de concentrer et de diriger les rayonnements lumineux extraits 12 selon un cône prédéfini. Un tel système de lentilles permet d'éviter une diffusion omni sens de la lumière extraite par les moyens d'extraction de la lumière. Afin de réaliser de tels moyens d'extraction de la lumière, lors de la fabrication, un moule tridimensionnel contenant le substrat de sérigraphie comportant la série de lentilles 21 est apposé sur la face inférieure 52 de la deuxième feuille de verre 5. L'ensemble est alors chauffé, la sérigraphie durcit en collant à la feuille de verre 5. Le moule est alors retiré, laissant en place la série de lentilles 21 sur la face inférieure 52 de la deuxième feuille de verre 5. D'autres procédés de fixation connus en soi peuvent être utilisés. Maintenant, en référence à la figure 3, nous allons décrire un deuxième mode de réalisation d'un vitrage lumineux selon l'invention. Dans ce deuxième mode de réalisation, la vitre de toit panoramique est similaire à la vitre de toit panoramique décrite en relation avec la figure 1. Les moyens d'extraction de la lumière qui comportent la sérigraphie d'extraction 9 sont complétés par des moyens de concentration de la lumière 30 qui sont placés sous, et en regard de, la sérigraphie d'extraction 9 et reliés de manière mobile à la deuxième feuille de verre 5. Les moyens de concentration 20 comportent un système de type lentille 20 comportant une série de lentilles 21 similaire à la série de lentilles 21 de la figure 2. Le système de type lentille 20 est monté sur un support transparent à la lumière 33. Ce support transparent 33 est relié à la face inférieure 52 de la deuxième feuille de verre 5 de manière mobile par l'intermédiaire d'un premier 31 et d'un deuxième 32 supports. Chacun des premier et deuxième supports comporte un élément mâle reçu à coulissement translation dans un élément femelle. Les deux mouvements 5 de coulissement à translation étant indépendants l'un de l'autre, ceci permet d'orienter les moyens de concentration de la lumière 30 comme si ces derniers étaient montés selon une liaison rotule par rapport à la deuxième feuille de verre 5. Ceci permet d'orienter le 10 cône de lumière concentrée 12. De cette manière, l'occupant oriente ainsi selon ses souhaits la direction de diffusion de la lumière concentrée 12. En variante de réalisation, les premier 21 et deuxième 32 supports sont remplacés par un support 15 unique, de préférence entourant sur une périphérie du support transparent à la lumière 33, réalisant la liaison rotule. Ce support unique comporte un élément mâle reçu à coulissement à translation dans un élément femelle. Ce support unique peut être de forme circulaire.In this first embodiment, the lens series 21 is directly integrated into the light extraction screen printing screen 9. In an alternative embodiment, the series of lenses 21 are made of a material different from a material used to produce the screen printing As a result, the light extraction screenprint 9, which previously illustrated in FIG. 1 was plane, two-dimensional, becomes, therefore, three-dimensional. Such a series of lenses makes it possible to concentrate and direct the extracted light rays 12 according to a predefined cone. Such a lens system makes it possible to avoid an omni-directional diffusion of the light extracted by the light extraction means. In order to achieve such light extraction means, during manufacture, a three-dimensional mold containing the screen printing substrate comprising the lens series 21 is affixed to the lower face 52 of the second glass sheet 5. The assembly is then heated, the screen printing hardens by sticking to the glass sheet 5. The mold is then removed, leaving in place the series of lenses 21 on the lower face 52 of the second glass sheet 5. Other known fixing methods in themselves can be used. Now, with reference to FIG. 3, we will describe a second embodiment of a luminous glazing unit according to the invention. In this second embodiment, the panoramic roof pane is similar to the panoramic roof pane described in connection with FIG. 1. The light extraction means which comprise the extraction screen printing screen 9 are supplemented by means of FIG. concentration of the light 30 which are placed under and in front of the extraction screen printing 9 and movably connected to the second glass sheet 5. The concentration means 20 comprise a lens-like system 20 comprising a series of lenses 21 similar to the series of lenses 21 of Figure 2. The lens-type system 20 is mounted on a light transparent support 33. This transparent support 33 is connected to the lower face 52 of the second glass sheet 5 of movably through a first 31 and a second 32 supports. Each of the first and second supports comprises a male element that is slidably translated in a female element. The two translational sliding movements being independent of one another, this makes it possible to orient the light concentration means 30 as if they were mounted in a ball joint relation to the second glass sheet 5 This makes it possible to orient the cone of concentrated light 12. In this way, the occupant thus directs the direction of diffusion of the concentrated light according to his wishes 12. In an alternative embodiment, the first 21 and second 32 supports are replaced. by a single support 15, preferably surrounding on a periphery of the light-transparent support 33, producing the ball joint. This single support comprises a male element received sliding translationally in a female element. This unique support can be circular in shape.

20 Maintenant, en référence à la figure 4, nous allons décrire une variante de réalisation du vitrage lumineux de la figure 3. Cette variante de réalisation se différencie du deuxième mode de réalisation de la figure 25 3 par le fait que les moyens de concentration de la lumière 40 comportent le système de type lentille 20 identique au système de type lentille de la figure 3 fixé sur un support 42 au moins transparent à la lumière au niveau du système de type lentille 20. Le support 42 est 30 fixé mobile à rotation selon une liaison rotule 41 sur l'encapsulation 1 de la vitre de toit panoramique. L'ensemble est positionné de sorte que le système de type lentille 20 s'étende en regard de la sérigraphie d'extraction 9 réalisée sur la face inférieure 52 de la deuxième feuille de verre 5. Comme pour le deuxième mode de réalisation de la figure 3, les moyens de concentration 40 sont de ce fait orientables, permettant ainsi à l'occupant d'orienter le cône de lumière concentrée 12 selon ses désirs. Bien entendu, de nombreuses modifications peuvent être apportées à l'invention sans pour autant sortir du 10 cadre de celle-ci. Now, with reference to FIG. 4, we will describe an alternative embodiment of the luminous glazing unit of FIG. 3. This embodiment variant differs from the second embodiment of FIG. 3 in that the means for concentrating the the light 40 comprises the lens-like system 20 identical to the lens-type system of FIG. 3 fixed on a support 42 at least transparent to light at the lens-type system 20. The support 42 is rotatably fixed according to a ball joint 41 on the encapsulation 1 of the panoramic roof pane. The assembly is positioned so that the lens-type system 20 extends next to the extraction screen printing 9 made on the lower face 52 of the second glass sheet 5. As for the second embodiment of FIG. 3, the concentration means 40 are thereby adjustable, thus allowing the occupant to orient the cone of concentrated light 12 according to his wishes. Of course, many modifications can be made to the invention without departing from the scope thereof.

Claims (9)

REVENDICATIONS1. Vitrage lumineux pour un véhicule automobile comportant : - une feuille de verre (5) comportant des première (52) et deuxième (53) faces principales et une tranche (51) ; - une source lumineuse (7) comportant une face émettrice agencée de sorte à ce que la face émettrice 10 s'étende en regard de la tranche (51) de la feuille de verre (5) ; et, - des moyens d'extraction (9;20;30;40) d'une lumière émise par la source lumineuse et guidée par la feuille de verre, les moyens d'extraction étant aménagés 15 sur une (52) des première et deuxième faces de la feuille de verre, caractérisé en ce que les moyens d'extraction comportent des moyens de concentration (20;30;40) de la lumière extraite. 20 REVENDICATIONS1. Glazing glazing for a motor vehicle comprising: - a glass sheet (5) comprising first (52) and second (53) main faces and a wafer (51); - A light source (7) having an emitter face arranged so that the emitter face 10 extends opposite the wafer (51) of the glass sheet (5); and - extraction means (9; 20; 30; 40) of a light emitted by the light source and guided by the glass sheet, the extraction means being arranged on one (52) of the first and second faces of the glass sheet, characterized in that the extraction means comprise means for concentrating (20; 30; 40) the extracted light. 20 2. Vitrage lumineux selon la revendication 1, caractérisé en ce que les moyens de concentration comprennent un système (20) de lentilles (21). 25 2. Glazing window according to claim 1, characterized in that the concentrating means comprise a system (20) of lenses (21). 25 3. Vitrage lumineux selon la revendication 1 ou 2, caractérisé en ce que les moyens de concentration sont montés mobile à rotation par rapport à la feuille de verre selon au moins un axe parallèle à l'une des première et deuxième faces de la feuille de verre. 30 3. Light pane according to claim 1 or 2, characterized in that the concentrating means are rotatably mounted relative to the glass sheet along at least one axis parallel to one of the first and second faces of the sheet of glass. glass. 30 4. Vitrage lumineux selon la revendication 3, caractérisé en ce que les moyens de concentrations (30) sont fixés sur l'une des première et deuxième faces de la feuille de verre avec une liaison rotule (31,32). 35 4. Light pane according to claim 3, characterized in that the concentration means (30) are fixed on one of the first and second faces of the glass sheet with a ball joint (31,32). 35 5. Vitrage lumineux selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de concentration(40) sont fixés sur une encapsulation (1) de la feuille de verre avec une liaison rotule (41). 5. Glazing window according to one of claims 1 to 3, characterized in that the concentrating means (40) are fixed on an encapsulation (1) of the glass sheet with a ball joint (41). 6. Vitrage lumineux selon l'une des revendications 1 à 3, caractérisé en ce que les moyens d'extraction comportent en outre une sérigraphie d'extraction (9) aménagée sur une partie de l'une des première et deuxième faces de la feuille de verre. 6. Glazing window according to one of claims 1 to 3, characterized in that the extraction means further comprises an extraction screen printing (9) arranged on a portion of one of the first and second faces of the sheet of glass. 7. Vitrage lumineux selon la revendication 6, caractérisé en ce que les moyens de concentration (20) sont intégrés à la sérigraphie d'extraction. 7. Luminous glazing according to claim 6, characterized in that the concentrating means (20) are integrated in the extraction screen printing. 8. Vitrage lumineux selon l'une des revendications 15 1 à 7, caractérisé en ce que la source lumineuse comporte des LEDs. 8. Luminous glazing according to one of claims 1 to 7, characterized in that the light source comprises LEDs. 9. Véhicule comportant un toit panoramique, caractérisé en ce que le toit panoramique comporte un 20 vitrage lumineux selon l'une des revendications 1 à 8. 9. Vehicle with a panoramic roof, characterized in that the panoramic roof comprises a luminous glazing unit according to one of claims 1 to 8.
FR1251671A 2012-02-23 2012-02-23 Luminous glazing for vehicle i.e. car, has light source comprising transmitter, and extraction unit arranged on one of main faces of glass leaf, where extraction unit comprises focusing unit for focusing extracted light Withdrawn FR2987323A1 (en)

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FR1251671A FR2987323A1 (en) 2012-02-23 2012-02-23 Luminous glazing for vehicle i.e. car, has light source comprising transmitter, and extraction unit arranged on one of main faces of glass leaf, where extraction unit comprises focusing unit for focusing extracted light

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FR1251671A FR2987323A1 (en) 2012-02-23 2012-02-23 Luminous glazing for vehicle i.e. car, has light source comprising transmitter, and extraction unit arranged on one of main faces of glass leaf, where extraction unit comprises focusing unit for focusing extracted light

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WO2014167291A1 (en) * 2013-04-12 2014-10-16 Pilkington Group Limited A glazing

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Publication number Priority date Publication date Assignee Title
WO2005018283A1 (en) * 2003-08-08 2005-02-24 Saint-Gobain Glass France Luminous element comprising at least one substrate and a light-emitting coating
US20050073851A1 (en) * 2003-10-01 2005-04-07 Yoshiyasu Itoh Sunroof panel apparatus for a vehicle
FR2899852A3 (en) * 2006-04-13 2007-10-19 Renault Sas Glazed element for a motor vehicle, comprises obscuring design of an external light radiation, where the glazed element is separating an external zone and an internal zone
EP1903359A2 (en) * 2005-06-02 2008-03-26 Grupo Antolin-Ingenieria, S.A. Light for vehicle roofs
FR2955539A1 (en) * 2010-01-26 2011-07-29 Saint Gobain LUMINOUS VEHICLE GLAZING, MANUFACTURING

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005018283A1 (en) * 2003-08-08 2005-02-24 Saint-Gobain Glass France Luminous element comprising at least one substrate and a light-emitting coating
US20050073851A1 (en) * 2003-10-01 2005-04-07 Yoshiyasu Itoh Sunroof panel apparatus for a vehicle
EP1903359A2 (en) * 2005-06-02 2008-03-26 Grupo Antolin-Ingenieria, S.A. Light for vehicle roofs
FR2899852A3 (en) * 2006-04-13 2007-10-19 Renault Sas Glazed element for a motor vehicle, comprises obscuring design of an external light radiation, where the glazed element is separating an external zone and an internal zone
FR2955539A1 (en) * 2010-01-26 2011-07-29 Saint Gobain LUMINOUS VEHICLE GLAZING, MANUFACTURING

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014167291A1 (en) * 2013-04-12 2014-10-16 Pilkington Group Limited A glazing
EP2983909B1 (en) 2013-04-12 2021-06-09 Pilkington Group Limited A glazing

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