FR3023510A1 - PAVILION GLAZING FOR A MOTOR VEHICLE HAVING ACTIVE FILM AND PROTECTIVE MEANS TO EXTEND ITS LIFETIME - Google Patents
PAVILION GLAZING FOR A MOTOR VEHICLE HAVING ACTIVE FILM AND PROTECTIVE MEANS TO EXTEND ITS LIFETIME Download PDFInfo
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- FR3023510A1 FR3023510A1 FR1456690A FR1456690A FR3023510A1 FR 3023510 A1 FR3023510 A1 FR 3023510A1 FR 1456690 A FR1456690 A FR 1456690A FR 1456690 A FR1456690 A FR 1456690A FR 3023510 A1 FR3023510 A1 FR 3023510A1
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- power supply
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- glazing according
- temperature
- active film
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
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- 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
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- 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
- B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
- B32B17/10467—Variable transmission
- B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
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- 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
- B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
- B32B17/10467—Variable transmission
- B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
- B32B17/10504—Liquid crystal layer
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
Vitrage de pavillon pour véhicule automobile comprenant une feuille de verre extérieure (1) et une feuille de verre intérieure (2) séparées l'une de l'autre par au moins une couche (3) de matière plastique transparente et par un film actif (8) devenant transparent lorsqu'il est alimenté électriquement et étant opaque lorsqu'il n'est pas alimenté, caractérisé en ce que le vitrage comporte au moins un capteur de température (12) et un boîtier électronique permettant de commander la coupure de l'alimentation électrique du film actif (8) lorsque la température mesurée par ledit capteur atteint une valeur prédéterminée.Pavement glazing for a motor vehicle comprising an outer glass sheet (1) and an inner glass sheet (2) separated from each other by at least one layer (3) of transparent plastic material and with an active film ( 8) becoming transparent when electrically powered and being opaque when not powered, characterized in that the glazing comprises at least one temperature sensor (12) and an electronic box for controlling the breaking of the supplying power to the active film (8) when the temperature measured by said sensor reaches a predetermined value.
Description
VITRAGE DE PAVILLON POUR VÉHICULE AUTOMOBILE COMPORTANT UN FILM ACTIF ET DES MOYENS DE PROTECTION POUR PROLONGER SA DURÉE DE VIE La présente invention concerne un vitrage de pavillon pour véhicule automobile. Les vitrages de pavillon classiques nécessitent un rideau d'occultation pour protéger les occupants du véhicule à l'égard du soleil. Les inconvénients d'un tel rideau d'occultation résident dans le fait qu'il augmente les coûts du vitrage de pavillon et qu'il réduit l'espace disponible au- dessus de la tête des occupants du véhicule. Le document W02013/189794 décrit un vitrage de pavillon comprenant une couche de verre extérieure et une couche de verre intérieure séparées par une ou plusieurs couches intercalaires de matière plastique transparente et par un film actif qui devient transparent lorsqu'il est alimenté électriquement et qui est opaque lorsqu'il n'est plus alimenté électriquement. Ainsi pour protéger les occupants du véhicule à l'égard du rayonnement solaire, le conducteur du véhicule commande la coupure de l'alimentation électrique du film actif pour que celui-ci devienne opaque.BACKGROUND OF THE INVENTION The present invention relates to a roof glazing for a motor vehicle. BACKGROUND OF THE INVENTION Conventional roof glazing requires a blackout curtain to protect the occupants of the vehicle from the sun. The drawbacks of such a blackout curtain lie in the fact that it increases the costs of the roof glazing and reduces the space available above the heads of the occupants of the vehicle. The document WO2013 / 189794 describes a roof glazing comprising an outer glass layer and an inner glass layer separated by one or more interlayer layers of transparent plastic material and by an active film which becomes transparent when it is electrically powered and which is opaque when no longer electrically powered. Thus, to protect the occupants of the vehicle with respect to solar radiation, the driver of the vehicle controls the cut-off of the power supply of the active film so that it becomes opaque.
De même, le conducteur du véhicule peut rétablir l'alimentation électrique lorsque l'intensité du rayonnement solaire a diminué pour que le film actif redevienne transparent. Cependant, le film actif ci-dessus qui est constitué par des cristaux liquides a une plage de température qui est limitée.Similarly, the driver of the vehicle can restore the power supply when the intensity of solar radiation has decreased so that the active film becomes transparent again. However, the above active film which consists of liquid crystals has a temperature range which is limited.
En dessous de -20°C, les cristaux liquides sont congelés. Le film n'arrive plus à réaliser la transition transparence/opacité dans un temps acceptable (moins de trois secondes). Au-delà de +60°C, le film commence à se détériorer. En effet : - à température classique (20°C), les cristaux liquides sont non conducteurs, la consommation du film est faible, - mais à partir de 60°C les cristaux liquides deviennent progressivement conducteurs et des arcs électriques peuvent se former dans le film, ce qui réduit la durée de vie du film, - à partir de 85°C, les cristaux liquides deviennent très conducteurs, la consommation électrique du film augmente exponentiellement. En quelques instants le film se détruit. Le but de la présente invention est de remédier à cet inconvénient.Below -20 ° C, the liquid crystals are frozen. The film can no longer perform the transparency / opacity transition in an acceptable time (less than three seconds). Beyond + 60 ° C, the film begins to deteriorate. Indeed: at conventional temperature (20 ° C.), the liquid crystals are non-conductive, the consumption of the film is low, but from 60 ° C. the liquid crystals gradually become conductive and electric arcs can form in the film, which reduces the life of the film, - from 85 ° C, the liquid crystal become very conductive, the power consumption of the film increases exponentially. In a few moments the film is destroyed. The object of the present invention is to overcome this disadvantage.
Ce but est atteint, selon l'invention, grâce à un vitrage de pavillon pour véhicule automobile comprenant une feuille de verre extérieure et une feuille de verre intérieure séparées l'une de l'autre par au moins une couche de matière plastique transparente et par un film actif devenant transparent lorsqu'il est alimenté électriquement et étant opaque lorsqu'il n'est pas alimenté, caractérisé en ce que le vitrage comporte au moins un capteur de température et un boîtier électronique permettant de commander la coupure de l'alimentation électrique du film actif lorsque la température mesurée par ledit capteur atteint une valeur prédéterminée. Ainsi, grâce au capteur de température l'alimentation électrique du film actif 15 est automatiquement coupée lorsque sa température atteint une valeur préjudiciable à l'égard de sa durée de vie. Dans une version préférée de l'invention, le boîtier électronique comprend un composant électronique qui permet de mesurer la puissance électrique consommée par le film actif et des moyens qui permettent de couper l'alimentation 20 électrique de ce film, lorsque la puissance électrique mesurée par ledit composant atteint une valeur prédéterminée. Le fait que la coupure de l'alimentation électrique du film soit commandée en cas de dépassement de la puissance électrique consommée permet de protéger encore davantage le film à l'égard des risques de destruction prématurée. 25 De préférence également, ledit boîtier électronique comprend en outre des moyens pour rétablir l'alimentation électrique du film actif, lorsque la température mesurée par le ou les capteurs ou la puissance électrique mesurée par ledit composant a chuté en-dessous de l'une ou l'autre desdites valeurs prédéterminées. 30 La valeur prédéterminée de la température de coupure de l'alimentation électrique du film est de préférence égale à 60°C. De même, la valeur prédéterminée de la puissance électrique entraînant la coupure de l'alimentation du film est de préférence égale à 10 Watts.This object is achieved, according to the invention, by a roof glazing for a motor vehicle comprising an outer glass sheet and an inner glass sheet separated from each other by at least one layer of transparent plastic material and by an active film becoming transparent when electrically powered and being opaque when not powered, characterized in that the glazing comprises at least one temperature sensor and an electronic box for controlling the power failure active film when the temperature measured by said sensor reaches a predetermined value. Thus, thanks to the temperature sensor the power supply of the active film 15 is automatically cut off when its temperature reaches a detrimental value with respect to its lifetime. In a preferred version of the invention, the electronic box comprises an electronic component which makes it possible to measure the electrical power consumed by the active film and means which make it possible to cut off the electric power supply of this film, when the electric power measured by said component reaches a predetermined value. The fact that the cut-off of the power supply of the film is controlled in the event of exceeding the electrical power consumed makes it possible to further protect the film with regard to the risks of premature destruction. Also preferably, said electronic box further comprises means for restoring the power supply of the active film, when the temperature measured by the one or more sensors or the electrical power measured by said component has dropped below one or the other of said predetermined values. The predetermined value of the cut-off temperature of the film power supply is preferably 60 ° C. Similarly, the predetermined value of the electrical power causing the cutoff of the power supply of the film is preferably equal to 10 Watts.
Dans un mode de réalisation avantageux de l'invention, le vitrage comporte plusieurs capteurs de température et ledit boîtier électronique comporte des moyens pour commander la coupure de l'alimentation électrique du film actif lorsque la température mesurée par l'un quelconque des capteurs atteint ladite valeur prédéterminée. Le fait d'utiliser plusieurs capteurs répartis sur le vitrage permet d'augmenter la fiabilité du fonctionnement sachant que la température du film peut varier d'un point à l'autre de celui-ci. De préférence, le ou lesdit(s) capteur(s) de température est(sont) un(des) 10 thermocouple(s). Selon d'autres particularités avantageuses de l'invention : - le boîtier électronique comporte des moyens pour envoyer vers le tableau de bord ou autre emplacement du véhicule un message d'alerte, lorsque la coupure de l'alimentation a été commandée par ledit boîtier, 15 - le vitrage de pavillon selon l'invention comporte une couche intercalaire de matière plastique comportant un évidement dans lequel est(sont) disposées(s) une ou plusieurs plaquettes portant chacune un capteur de température relié par un fil conducteur audit boîtier électronique. D'autres particularités et avantages de l'invention apparaîtront encore tout au 20 long de la description ci-après. Aux dessins annexés, donnés à titre d'exemples, non limitatifs : - la figure 1 est une vue éclatée d'un vitrage de pavillon selon l'invention, - la figure 2 est une vue montrant partiellement la face de dessous d'un vitrage de pavillon selon l'invention. 25 la figure 3 montre un exemple de logique de fonctionnement de l'invention. On va d'abord décrire la vue éclatée d'un vitrage de pavillon, tel que représenté sur la figure 1. Ce vitrage comporte des parties connues selon le document WO 2013/189794 qui a été déposé au nom de la société AGC GLASS EUROPE. 30 Ainsi, le vitrage représenté sur la figure 1 comprend de façon connue une feuille de verre extérieure 1 et une feuille de verre intérieure 2 séparées l'une de l'autre par plusieurs couches intercalaires 3, 4, 5, 6, 7 de matière plastique transparente en PVB (polyvinylbutylène) ou EVA (Éthylène-acétate de vinyle) et par un film actif 8. Le film actif 8 est disposé dans un évidement 4a de la couche intercalaire 4. Ce film 8 est opaque.In an advantageous embodiment of the invention, the glazing comprises a plurality of temperature sensors and said electronic box comprises means for controlling the interruption of the power supply of the active film when the temperature measured by any of the sensors reaches said temperature. predetermined value. The fact of using several sensors distributed on the glazing makes it possible to increase the reliability of the operation knowing that the temperature of the film can vary from one point to another of this one. Preferably, said temperature sensor (s) is (are) a thermocouple (s). According to other advantageous features of the invention: the electronic box comprises means for sending to the dashboard or other location of the vehicle an alert message, when the power failure has been controlled by said housing, - The roof glazing according to the invention comprises an intermediate layer of plastic material having a recess in which is (are) arranged (s) one or more plates each carrying a temperature sensor connected by a conductive wire to said electronic box. Other features and advantages of the invention will become apparent throughout the description hereinafter. In the accompanying drawings, given by way of nonlimiting example: - Figure 1 is an exploded view of a roof glazing according to the invention; - Figure 2 is a view partially showing the bottom face of a glazing unit; flag according to the invention. Figure 3 shows an exemplary operating logic of the invention. We will first describe the exploded view of a roof glazing, as shown in Figure 1. This glazing comprises known parts according to WO 2013/189794 which was filed on behalf of AGC GLASS EUROPE. Thus, the glazing shown in FIG. 1 comprises, in known manner, an outer glass sheet 1 and an inner glass sheet 2 separated from each other by several interlayers 3, 4, 5, 6, 7 of material transparent plastic PVB (polyvinylbutylene) or EVA (ethylene-vinyl acetate) and an active film 8. The active film 8 is disposed in a recess 4a of the intermediate layer 4. This film 8 is opaque.
Il devient transparent lorsqu'il est alimenté électriquement. Il redevient opaque lorsque l'alimentation électrique est coupée. La couche intercalaire 6 comporte une échancrure 9 dans laquelle vient se loger une plaquette 10. Cette plaquette 10 porte des diodes électroluminescentes 11 qui permettent d'éclairer l'intérieur du véhicule. Conformément à l'invention, le vitrage comporte au moins un capteur de température 12 et un boîtier électronique permettant de commander la coupure de l'alimentation électrique du film actif 8 lorsque la température mesurée par le capteur 12 atteint une valeur prédéterminée.It becomes transparent when powered electrically. It becomes opaque again when the power supply is cut off. The intermediate layer 6 has a notch 9 in which is housed a wafer 10. This wafer 10 carries light emitting diodes 11 that illuminate the interior of the vehicle. According to the invention, the glazing comprises at least one temperature sensor 12 and an electronic box for controlling the cut-off of the power supply of the active film 8 when the temperature measured by the sensor 12 reaches a predetermined value.
Cette valeur prédéterminée est inférieure à la température maximale admissible par le film actif 8. Les essais ont montré que pour éviter tout risque de destruction prématurée du film actif 8, il était préférable de couper l'alimentation électrique du film 8 lorsque sa température dépasse 60°C.This predetermined value is lower than the maximum admissible temperature by the active film 8. The tests have shown that to avoid any risk of premature destruction of the active film 8, it was preferable to cut the power supply of the film 8 when its temperature exceeds 60 ° C.
De préférence, le boîtier électronique cité plus haut comprend un composant électronique qui permet de mesurer la puissance électrique consommée par le film actif 8 et des moyens qui permettent de couper l'alimentation électrique de ce film 8, lorsque la puissance électrique mesurée par le composant précité atteint une valeur prédéterminée, par exemple égale à 10 Watts.Preferably, the electronic unit mentioned above comprises an electronic component which makes it possible to measure the electrical power consumed by the active film 8 and means which make it possible to cut off the power supply of this film 8, when the electrical power measured by the component above reaches a predetermined value, for example equal to 10 Watts.
Le boîtier électronique précité comprend en outre des moyens pour rétablir l'alimentation électrique du film actif 8, lorsque la température mesurée par le ou les capteurs ou la puissance électrique mesurée par ledit composant a chuté en-dessous de l'une ou l'autre des valeurs prédéterminées, c'est-à-dire respectivement 60°C et 10 Watts.The aforementioned electronic unit further comprises means for restoring the power supply of the active film 8, when the temperature measured by the sensor or the electrical power measured by said component has dropped below one or the other. predetermined values, that is to say respectively 60 ° C and 10 Watts.
Pour éviter des écarts trop brefs entre les coupures et rétablissements de l'alimentation, il est préférable que l'alimentation électrique soit rétablie à une température inférieure à 60°C par exemple égale à 55°C ou lorsque la puissance consommée est inférieure à 10 Watts par exemple égale à 9 Watts.To avoid short intervals between power cuts and restores, it is preferable for the power supply to be restored to a temperature below 60 ° C., for example equal to 55 ° C. or when the power consumed is less than 10 ° C. Watts for example equal to 9 Watts.
Compte tenu des dimensions importantes des vitrages de pavillon, il peut exister des différences importantes de la température entre deux points espacés du vitrage. Pour éviter l'incidence de ces différences, il est préférable que le vitrage comporte plusieurs capteurs de température 12 et que le boîtier électronique comporte des moyens pour commander la coupure de l'alimentation électrique du film actif 8 lorsque la température mesurée par l'un quelconque des capteurs atteint la valeur prédéterminée. Ainsi, le vitrage peut comporter trois capteurs de température de préférence régulièrement répartis sur la surface du vitrage. Dans une version préférée de l'invention, le ou les capteur(s) de température est(sont) un(des) thermocouple(s). Ces thermocouples engendrent des signaux électriques qui sont proportionnels à la température de la zone dans laquelle est située le 15 thermocouple. Le boîtier électronique peut comporter en outre des moyens pour envoyer vers le tableau de bord ou autre emplacement du véhicule un message d'alerte, lorsque la coupure de l'alimentation électrique a été commandée par le boîtier électronique. 20 Dans le mode de réalisation représenté sur la figure 1, chacun des capteurs 12, c'est-à-dire chacun des thermocouples est disposé sur une plaquette 10 qui sert déjà de support pour les diodes électroluminescentes. Chacun des thermocouples est relié par un fil conducteur à un boîtier électronique qui gère les signaux émis par les thermocouples et décide en 25 fonction de l'amplitude de ces signaux de couper ou non l'alimentation électrique du film actif 8. Ce boîtier électronique gère également le signal qu'il reçoit du composant qui mesure la puissance électrique consommée par le film actif 8. Ces signaux constituent les données d'entrée. 30 Une relation logique (de type ET) entre ces données permet ou interdit le fonctionnement du film actif 8. L'organigramme de la figure 3 montre un exemple simplifié de logique de fonctionnement.Given the large dimensions of the roof glazing, there may be significant differences in the temperature between two spaced points of the glazing. To avoid the impact of these differences, it is preferable that the glazing comprises several temperature sensors 12 and that the electronic box comprises means for controlling the cut-off of the power supply of the active film 8 when the temperature measured by one any of the sensors reaches the predetermined value. Thus, the glazing may comprise three temperature sensors preferably evenly distributed on the surface of the glazing. In a preferred version of the invention, the temperature sensor (s) is (are) a thermocouple (s). These thermocouples generate electrical signals that are proportional to the temperature of the zone in which the thermocouple is located. The electronic box may further comprise means for sending to the dashboard or other location of the vehicle an alert message, when the power failure has been controlled by the control unit. In the embodiment shown in FIG. 1, each of the sensors 12, i.e. each of the thermocouples, is disposed on a wafer 10 which already serves as a support for the light-emitting diodes. Each of the thermocouples is connected by a conducting wire to an electronic box which manages the signals emitted by the thermocouples and decides, depending on the amplitude of these signals, to cut or not the power supply of the active film 8. This control unit manages also the signal it receives from the component that measures the electrical power consumed by the active film 8. These signals constitute the input data. A logical (AND-like) relationship between these data permits or disables the operation of the active film 8. The flowchart of Fig. 3 shows a simplified example of operating logic.
La figure 2 montre la face de dessous d'un vitrage de pavillon selon l'invention.Figure 2 shows the underside of a roof glazing according to the invention.
Les références 13, 14, 15 et 16 représentent respectivement le boîtier électronique général du vitrage, le boîtier électronique de gestion du film 8, le boîtier électronique de gestion des diodes électroluminescentes de la liseuse gauche et le boîtier électronique de gestion des diodes électroluminescentes de la liseuse droite.The references 13, 14, 15 and 16 respectively represent the general electronic control unit of the glazing unit, the electronic control unit for the film 8, the control unit for the management of the light emitting diodes of the left reading lamp and the electronic control unit for the management of the light-emitting diodes of the right reading light.
La flèche 17 désigne la zone tactile d'activation du film 8. Les flèches 18 et 19 désignent respectivement la zone tactile d'activation de la liseuse gauche et la zone tactile d'activation de la liseuse droite. Bien entendu, l'invention n'est pas limitée aux exemples décrits. Ainsi, le vitrage peut comporter d'autres couches intercalaires que celles représentées sur la figure 1. Par exemple, le vitrage selon l'invention peut comporter une couche de protection contre les rayons IR (infra-rouge), une couche de protection contre les UV (ultra-violet), une couche photochromique, une couche anti-reflet.The arrow 17 designates the activation touching zone of the film 8. The arrows 18 and 19 respectively designate the touch zone for activating the left reading light and the touching zone for activating the right reading light. Of course, the invention is not limited to the examples described. Thus, the glazing may comprise other intermediate layers than those shown in FIG. 1. For example, the glazing according to the invention may comprise a protective layer against IR (infra-red) radiation, a protective layer against UV (ultra-violet), a photochromic layer, an anti-reflective layer.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1456690A FR3023510B1 (en) | 2014-07-11 | 2014-07-11 | PAVILION GLAZING FOR A MOTOR VEHICLE HAVING ACTIVE FILM AND PROTECTIVE MEANS TO EXTEND ITS LIFETIME |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1456690A FR3023510B1 (en) | 2014-07-11 | 2014-07-11 | PAVILION GLAZING FOR A MOTOR VEHICLE HAVING ACTIVE FILM AND PROTECTIVE MEANS TO EXTEND ITS LIFETIME |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3023510A1 true FR3023510A1 (en) | 2016-01-15 |
| FR3023510B1 FR3023510B1 (en) | 2016-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1456690A Expired - Fee Related FR3023510B1 (en) | 2014-07-11 | 2014-07-11 | PAVILION GLAZING FOR A MOTOR VEHICLE HAVING ACTIVE FILM AND PROTECTIVE MEANS TO EXTEND ITS LIFETIME |
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| Country | Link |
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| FR (1) | FR3023510B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039390A (en) * | 1996-08-20 | 2000-03-21 | Donnelly Corporation | Chromogenic window assembly construction and other chromogenic devices |
| US20080007086A1 (en) * | 2005-12-10 | 2008-01-10 | Ram Pattikonda | Vehicle shading system and method using an electrically controlled transmission control material |
| WO2008090438A2 (en) * | 2007-01-22 | 2008-07-31 | Ho Keung Tse | Apparatus for light control and method for light control |
| WO2012156779A1 (en) * | 2011-05-16 | 2012-11-22 | Tofas Turk Otomobil Fabrikasi Anonim Sirketi | A window darkening system and method for vehicles |
| WO2013099165A1 (en) * | 2011-12-26 | 2013-07-04 | シャープ株式会社 | Liquid crystal display device |
| WO2013189794A1 (en) * | 2012-06-19 | 2013-12-27 | Agc Glass Europe | Sunroof comprising lighting means |
| WO2014015742A1 (en) * | 2012-07-26 | 2014-01-30 | 法国圣戈班玻璃公司 | Vehicle safety reminding device and vehicle safety reminding method |
-
2014
- 2014-07-11 FR FR1456690A patent/FR3023510B1/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039390A (en) * | 1996-08-20 | 2000-03-21 | Donnelly Corporation | Chromogenic window assembly construction and other chromogenic devices |
| US20080007086A1 (en) * | 2005-12-10 | 2008-01-10 | Ram Pattikonda | Vehicle shading system and method using an electrically controlled transmission control material |
| WO2008090438A2 (en) * | 2007-01-22 | 2008-07-31 | Ho Keung Tse | Apparatus for light control and method for light control |
| WO2012156779A1 (en) * | 2011-05-16 | 2012-11-22 | Tofas Turk Otomobil Fabrikasi Anonim Sirketi | A window darkening system and method for vehicles |
| WO2013099165A1 (en) * | 2011-12-26 | 2013-07-04 | シャープ株式会社 | Liquid crystal display device |
| WO2013189794A1 (en) * | 2012-06-19 | 2013-12-27 | Agc Glass Europe | Sunroof comprising lighting means |
| WO2014015742A1 (en) * | 2012-07-26 | 2014-01-30 | 法国圣戈班玻璃公司 | Vehicle safety reminding device and vehicle safety reminding method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3023510B1 (en) | 2016-07-15 |
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