WO2019145644A1 - Luminous device for aircraft cabin - Google Patents

Luminous device for aircraft cabin Download PDF

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Publication number
WO2019145644A1
WO2019145644A1 PCT/FR2019/050157 FR2019050157W WO2019145644A1 WO 2019145644 A1 WO2019145644 A1 WO 2019145644A1 FR 2019050157 W FR2019050157 W FR 2019050157W WO 2019145644 A1 WO2019145644 A1 WO 2019145644A1
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WO
WIPO (PCT)
Prior art keywords
core
optical fibers
aircraft cabin
light device
light
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Application number
PCT/FR2019/050157
Other languages
French (fr)
Inventor
Marc MOULIN
Nicolas RATERO
Original Assignee
P.G.A. Electronic
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 P.G.A. Electronic filed Critical P.G.A. Electronic
Priority to EP19710014.2A priority Critical patent/EP3746698A1/en
Publication of WO2019145644A1 publication Critical patent/WO2019145644A1/en

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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
    • G02B6/0005—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 of the fibre type
    • G02B6/001—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 of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre

Definitions

  • the invention relates to the field of lighting dedicated to aircraft cabins, in particular optical fiber lighting devices for aircraft cabins.
  • Some polymethyl methacrylate optical fibers when properly treated, have particularly interesting light diffusion and flexibility characteristics. However, these fibers are totally incompatible with an aeronautical use because they are particularly flammable.
  • the light devices dedicated to aircraft cabins are based on low-flammability optical fibers but having lower light qualities and having unsatisfactory mechanical characteristics for its installation.
  • the invention improves the situation.
  • the invention proposes a light device for an aircraft cabin, comprising a polymethylmethacrylate optical fiber core, characterized in that the optical fiber core is integrally embedded in a material having flame retardant properties.
  • the light device according to the invention can have one or more of the following characteristics:
  • the material is a coating made in a material of the silicone type
  • the material is a potting made in a material of silicone or polyurethane type
  • the device further comprises a non-flammable support arranged to receive the core of optical fibers embedded in the material, the support is made of a material of silicone, polyurethane or PTFE, FEP or THV type,
  • the support has an open section
  • the support has a closed section
  • the support is flexible and opaque, translucent or opalescent
  • the optical fiber core comprises between 7 and 120 optical fibers
  • the optical fiber core comprises 30 optical fibers
  • the optical fibers of the core each have a diameter of substantially between 250 and 1 000 muh each
  • the optical fibers of the core each have a diameter substantially equal to 500 ⁇ m each
  • the device is flexible, and that it does not show significant light leak when folded with a radius of curvature of the order of 25 mm.
  • the invention also relates to a method for manufacturing an aircraft cabin light device comprising the following operations:
  • the material is a coating or a potting
  • the operation b) comprises an extrusion or a co-extrusion of the optical fiber core and the material.
  • FIG. 1 represents a cross-sectional view of a first embodiment of a light device according to the invention
  • FIG. 2 represents a cross-sectional view of a second embodiment of a light device according to the invention
  • FIG. 3 represents a front view of a light device according to the embodiment of FIG. 1 or FIG. 2, and - Figure 4 and Figure 5 show a front view of a variant of the device of Figure 3.
  • Figure 1 shows a cross-sectional view of a first embodiment of a light device 2 according to the invention.
  • the light device 2 comprises a core 4 of optical fibers 6 in polymethyl methacrylate.
  • the core 4 is composed of 30 optical fibers whose diameter is about 500 ⁇ m.
  • the core 4 may comprise between 7 and 120 optical fibers, whose diameter may vary between 250 mhi and 1000 mhi.
  • the number of fibers may vary as described in Table 1 below:
  • the optical fibers 6 are treated according to the method described in the French patent FR 2 714 147 in order to create a large number of irregularities on their surface. These irregularities have the particularity of rendering the optical fibers 6 diffusing radially in an extremely regular manner. This treatment is particularly advantageous because it makes it possible to obtain an optical fiber whose linear linear loss is low, while offering an excellent diffusion of radial light. Alternatively, other treatments could be applied, for example the method described in the international patent application WO 2016/198772.
  • the light device 2 has in the example described here a diffusing length of between 500 mm and 4000 mm. Alternatively, the length could be between 300 mm and 8000 mm.
  • the core 4 is embedded in a coating 8.
  • the coating 8 is in the example described here a silicone type material having flame retardant properties.
  • the core 4 of the optical fibers 6 is inserted in an extruder-type machine, and the coating 8 is extruded homogeneously around the core 4 according to profiles of shapes adapted to the needs , as for example that illustrated in FIG.
  • the coating 8 it is necessary to use a flexible material, transparent or diffusing or opalescent and having flame retardant properties.
  • the amount of coating 8 is chosen so that the coating volume 8 is 3 times greater than the volume of the core 4. The Applicant's work has demonstrated that it allows to obtain flame retardant performance. satisfactory while maintaining good light scattering properties.
  • the coating 8 constitutes itself a support.
  • a support could be added around the coating 8. This support could be chosen as that of the embodiment of Figure 2.
  • the coating 8 could impose a different cross section to the light device 2, for example a cylindrical cross section, rectangular, or any other transverse profile achievable by coextrusion.
  • the light device 2 thus produced is capable of passing the flammability tests according to the aeronautical standards mentioned above, thanks to the absence of air around the optical fibers 6.
  • Figure 2 is a cross-sectional view of an alternative embodiment.
  • the coating 8 is replaced by a potting 10, and the support 12 becomes necessary, and surrounds the potting 10 in which is embedded the core 4 of optical fibers 6.
  • the potting material is of silicone or polyurethane type. This material is deposited either by gravity or under pressure in the support 12.
  • the support 12 is made of a silicone material, polyurethane, PTFE (Polytetrafluoroethylene), FEP (Fluorinated Ethylene Propylene) or THV (Tertiofluorethylene terpolymer, hexafluoropropylene and vinylidene fluoride).
  • the amount of potting 10 is chosen so that the potting volume 10 is 1.2 times greater than the volume of the core 4. The Applicant's work has demonstrated that this makes it possible to obtain flame retardant performance. satisfactory while maintaining good light scattering properties.
  • the material of the support 12 must be flexible, opaque or translucent or opalescent and non-flammable.
  • the shape of the support 12 must correspond to the desired shape for the light device 2.
  • the support 12 could impose a different cross section to the light device 2, for example a cylindrical cross section, rectangular, or any other profile transversal workable by extrusion.
  • the thickness of the support 12 is between 0.5 mm and 2 mm, in order to have both good flame-retardant and luminous properties.
  • FIG. 3 represents a front view of a light device 2 embodying the embodiment of FIG. 1 or FIG. 2.
  • the light device 2 has a profile shape of which the cross section depends on the profile and the chosen embodiment.
  • the light device comprises a connector 14 for connecting it to a light source, not shown, and an opaque sleeve 16 which serves to make the junction between the connector 14 and the coating 8 or the support 12, and to limit the light leaks at the connector 14.
  • the light device 2 could comprise other types of connector, or engage in an output connector of a light source, and the sleeve 16 could be made differently or omitted.
  • the light device 2 may comprise a second connector 14 to be able to connect a light source to the other end - as shown in FIG. 4 - or to bring the two ends together in the same connector 14 to form a loop - as shown in Figure 5.
  • the luminous device 2 makes it possible to restore a homogeneous light over a length that can go up to 4 meters, while presenting an excellent flexibility, allowing in particular a radius of curvature of the order of 25 mm without mechanical problem nor significant luminous loss.
  • the support 12 may have a closed or open section according to the selected variants.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Multicomponent Fibers (AREA)

Abstract

A luminous device for an aircraft cabin comprises a core (4) of optical fibres (6) made of poly(methyl methacrylate). The core (4) of optical fibres (6) is entirely embedded in a material (8, 10) having fire-retardant properties.

Description

Dispositif lumineux pour cabine d’aéronef  Luminous device for aircraft cabin
L’invention concerne le domaine de l’éclairage dédié aux cabines d’aéronef, en particulier les dispositifs d’éclairage à fibres optiques pour cabines d’aéronef. The invention relates to the field of lighting dedicated to aircraft cabins, in particular optical fiber lighting devices for aircraft cabins.
Le domaine de l’aéronautique est particulier en ce que les normes notamment celles consacrées à la sécurité du passager sont drastiques. En effet, il ne peut être envisageable qu’un incident puisse se produire alors qu’un avion est en phase de vol. The field of aeronautics is particular in that standards including those devoted to passenger safety are drastic. Indeed, it can not be considered that an incident can occur while an aircraft is in flight phase.
Dans ce contexte, les normes liées à la flammabilité des équipements sont particulièrement sévères, et n’ont rien de commun avec les applications terrestres. In this context, standards related to the flammability of equipment are particularly severe, and have nothing in common with terrestrial applications.
Certaines fibres optiques en polyméthacrylate de méthyle, lorsque traitées de manière appropriée, présentent des caractéristiques de diffusion lumineuse et de souplesse particulièrement intéressantes. Cependant, ces fibres sont totalement incompatibles avec un usage aéronautique, car particulièrement inflammables. Some polymethyl methacrylate optical fibers, when properly treated, have particularly interesting light diffusion and flexibility characteristics. However, these fibers are totally incompatible with an aeronautical use because they are particularly flammable.
Pour cette raison, les dispositifs lumineux dédiés aux cabines d’aéronef se basent sur des fibres optiques peu inflammables mais ayant des qualités lumineuses inférieures et présentant des caractéristiques mécaniques insatisfaisantes pour son installation. For this reason, the light devices dedicated to aircraft cabins are based on low-flammability optical fibers but having lower light qualities and having unsatisfactory mechanical characteristics for its installation.
L’invention vient améliorer la situation. A cet effet, l’invention propose un dispositif lumineux pour cabine d’aéronef, comprenant un cœur de fibres optiques en polyméthacrylate de méthyle, caractérisé en ce que le cœur de fibres optiques est intégralement noyé dans un matériau ayant des propriétés ignifuges. The invention improves the situation. For this purpose, the invention proposes a light device for an aircraft cabin, comprising a polymethylmethacrylate optical fiber core, characterized in that the optical fiber core is integrally embedded in a material having flame retardant properties.
Dans diverses variantes, le dispositif lumineux selon l’invention peut présenter une ou plusieurs des caractéristiques suivantes : In various variants, the light device according to the invention can have one or more of the following characteristics:
- le matériau est un enrobage réalisé dans une matière de type silicone,  the material is a coating made in a material of the silicone type,
- le matériau est un rempotage réalisé dans une matière de type silicone ou polyuréthane, the material is a potting made in a material of silicone or polyurethane type,
- le dispositif comprend en outre un support ininflammable agencé pour recevoir le cœur de fibres optiques noyé dans le matériau, - le support est réalisé dans une matière de type silicone, polyuréthane ou PTFE, FEP ou THV, the device further comprises a non-flammable support arranged to receive the core of optical fibers embedded in the material, the support is made of a material of silicone, polyurethane or PTFE, FEP or THV type,
- le support présente une section ouverte,  the support has an open section,
- le support présente une section fermée,  the support has a closed section,
- le support est flexible et opaque, translucide ou opalescent,  the support is flexible and opaque, translucent or opalescent,
- le cœur de fibres optiques comprend entre 7 et 120 fibres optiques,  the optical fiber core comprises between 7 and 120 optical fibers,
- le cœur de fibres optiques comprend 30 fibres optiques,  the optical fiber core comprises 30 optical fibers,
- les fibres optiques du cœur présentent chacune un diamètre sensiblement compris entre 250 à 1 OOOmhi chacune,  the optical fibers of the core each have a diameter of substantially between 250 and 1 000 muh each,
- les fibres optiques du cœur présentent chacune un diamètre sensiblement égal à 500mhi chacune, et  the optical fibers of the core each have a diameter substantially equal to 500 μm each, and
- le dispositif est flexible, et en qu’il ne présente pas de fuite significative de lumière lorsqu’il est plié avec un rayon de courbure de l’ordre de 25 mm.  - The device is flexible, and that it does not show significant light leak when folded with a radius of curvature of the order of 25 mm.
L’invention concerne également un procédé de fabrication d’un dispositif lumineux pour cabine d’aéronef comprenant les opérations suivantes : The invention also relates to a method for manufacturing an aircraft cabin light device comprising the following operations:
a) Préparer un cœur de fibres optiques en polyméthacrylate de méthyle, a) Prepare a fiber optic core made of polymethylmethacrylate,
b) Noyer le cœur de fibres optiques dans un matériau ayant des propriétés ignifuges. b) Core the fiber optic core in a material with flame retardant properties.
Selon une variante de ce procédé, le matériau est un enrobage ou un rempotage, et dans lequel l’opération b) comprend une extrusion ou une co-extrusion du cœur de fibres optiques et du matériau. According to a variant of this method, the material is a coating or a potting, and wherein the operation b) comprises an extrusion or a co-extrusion of the optical fiber core and the material.
D’autres caractéristiques et avantages de l’invention apparaîtront mieux à la lecture de la description qui suit, tirée d’exemples donnés à titre illustratif et non limitatif, tirés des dessins sur lesquels : Other features and advantages of the invention will appear better on reading the following description, taken from examples given for illustrative and non-limiting purposes, taken from the drawings in which:
- la figure 1 représente une vue en coupe transversale d’un premier mode de réalisation d’un dispositif lumineux selon l’invention,  FIG. 1 represents a cross-sectional view of a first embodiment of a light device according to the invention,
-la figure 2 représente une vue en coupe transversale d’un deuxième mode de réalisation d’un dispositif lumineux selon l’invention,  FIG. 2 represents a cross-sectional view of a second embodiment of a light device according to the invention,
- la Figure 3 représente une vue de face d’un dispositif lumineux selon le mode de réalisation de la Figure 1 ou de la Figure 2, et - la Figure 4 et la Figure 5 représentent une vue de face d’une variante du dispositif de la Figure 3. FIG. 3 represents a front view of a light device according to the embodiment of FIG. 1 or FIG. 2, and - Figure 4 and Figure 5 show a front view of a variant of the device of Figure 3.
Les dessins et la description ci-après contiennent, pour l'essentiel, des éléments de caractère certain. Ils pourront donc non seulement servir à mieux faire comprendre la présente invention, mais aussi contribuer à sa définition, le cas échéant. The drawings and the description below contain, for the most part, elements of a certain character. They can therefore not only serve to better understand the present invention, but also contribute to its definition, if any.
La Figure 1 représente une vue en coupe transversale d’un premier mode de réalisation d’un dispositif lumineux 2 selon l’invention. Figure 1 shows a cross-sectional view of a first embodiment of a light device 2 according to the invention.
Le dispositif lumineux 2 comprend un cœur 4 de fibres optiques 6 en polyméthacrylate de méthyle. Le cœur 4 est composé de 30 fibres optiques dont le diamètre est d’environ 500 pm. En variante, le cœur 4 peut comprendre entre 7 et 120 fibres optiques, dont le diamètre peut varier entre 250 mhi et 1000 mhi. The light device 2 comprises a core 4 of optical fibers 6 in polymethyl methacrylate. The core 4 is composed of 30 optical fibers whose diameter is about 500 μm. Alternatively, the core 4 may comprise between 7 and 120 optical fibers, whose diameter may vary between 250 mhi and 1000 mhi.
Suivant le diamètre des fibres optiques 6, à surface totale utile égale, le nombre de fibres peut varier comme décrit dans le tableau 1 ci-dessous : Depending on the diameter of the optical fibers 6, with equal effective total area, the number of fibers may vary as described in Table 1 below:
Figure imgf000004_0001
Figure imgf000004_0001
Tableau 1  Table 1
Les fibres optiques 6 sont dans l’exemple décrit ici traitées conformément à la méthode décrite dans le brevet français FR 2 714 147 afin de créer sur leur surface un grand nombre d’irrégularités. Ces irrégularités ont la particularité de rendre les fibres optiques 6 diffusantes radialement de manière extrêmement régulière. Ce traitement est particulièrement avantageux car il permet d’obtenir une fibre optique dont la perte lumineuse linéaire est faible, tout en offrant une excellente diffusion de lumière radiale. En variante, d’autres traitements pourraient être appliqués, par exemple le procédé décrit dans la demande de brevet internationale WO 2016/198772. In the example described here, the optical fibers 6 are treated according to the method described in the French patent FR 2 714 147 in order to create a large number of irregularities on their surface. These irregularities have the particularity of rendering the optical fibers 6 diffusing radially in an extremely regular manner. This treatment is particularly advantageous because it makes it possible to obtain an optical fiber whose linear linear loss is low, while offering an excellent diffusion of radial light. Alternatively, other treatments could be applied, for example the method described in the international patent application WO 2016/198772.
Le problème principal des fibres optiques en polyméthacrylate de méthyle est leur inflammabilité. Ainsi, bien que la demande de brevet internationale WO 2016/198772 mentionne une possible résistance au feu, les tests réalisés par la Demanderesse ont démontré qu’un cœur de fibres en polyméthacrylate de méthyle inséré dans un fourreau, aussi résistant au feu soit-il, est incompatible avec un usage aéronautique, notamment les essais de flammabilité décrits par le standard FAR/CS 25.853, App.F, Part I,(a)(l)(ii) And 18 23.6.2016 Vertical bum l2s, repris par les normes avioniques Airbus ABD0031 et Boeing BSS7230/F2. The main problem of optical fibers in polymethyl methacrylate is their flammability. Thus, although international patent application WO 2016/198772 mentions a possible fire resistance, the tests carried out by the Applicant have demonstrated that a fiber core made of polymethyl methacrylate inserted into a sheath, as fire-resistant as it is , is incompatible with an aeronautical use, in particular the flammability tests described by the standard FAR / CS 25.853, App.F, Part I, (a) (l) (ii) And 18 23.6.2016 Vertical bum l2s, taken over by Airbus ABD0031 and Boeing BSS7230 / F2 avionics standards.
Le dispositif lumineux 2 présente dans l’exemple décrit ici une longueur diffusante comprise entre 500 mm et 4000 mm. En variante, la longueur pourrait être comprise entre 300 mm et 8000 mm. The light device 2 has in the example described here a diffusing length of between 500 mm and 4000 mm. Alternatively, the length could be between 300 mm and 8000 mm.
Le cœur 4 est noyé dans un enrobage 8. L’enrobage 8 est dans l’exemple décrit ici une matière de type silicone ayant des propriétés ignifuges. Afin de noyer le cœur 4 dans l’enrobage 8, le cœur 4 de fibres optiques 6 est inséré dans une machine de type extrudeuse, et l’enrobage 8 est extrudé de manière homogène autour du cœur 4 suivant des profils de formes adaptés aux besoins, comme par exemple celui illustré en figure 1. The core 4 is embedded in a coating 8. The coating 8 is in the example described here a silicone type material having flame retardant properties. In order to embed the core 4 in the coating 8, the core 4 of the optical fibers 6 is inserted in an extruder-type machine, and the coating 8 is extruded homogeneously around the core 4 according to profiles of shapes adapted to the needs , as for example that illustrated in FIG.
Pour l’enrobage 8, il convient d’utiliser une matière flexible, transparente ou diffusante ou opalescente et ayant des propriétés ignifuges. Dans l’exemple décrit ici, la quantité d’enrobage 8 est choisie de sorte que le volume d’enrobage 8 soit 3 fois supérieur au volume du cœur 4. Les travaux de la Demanderesse ont démontré que cela permet d’obtenir des performances ignifuges satisfaisantes tout en maintenant de bonnes propriétés de diffusion de lumière. For the coating 8, it is necessary to use a flexible material, transparent or diffusing or opalescent and having flame retardant properties. In the example described here, the amount of coating 8 is chosen so that the coating volume 8 is 3 times greater than the volume of the core 4. The Applicant's work has demonstrated that it allows to obtain flame retardant performance. satisfactory while maintaining good light scattering properties.
Dans l’exemple décrit ici, l’enrobage 8 constitue par lui-même un support. En variante, un support pourrait être ajouté autour de l’enrobage 8. Ce support pourrait être choisi comme celui du mode de réalisation de la Figure 2. L’enrobage 8 pourrait imposer une section transversale différente au dispositif lumineux 2, par exemple une section transversale cylindrique, rectangulaire, ou tout autre profil transversale réalisable par co-extrusion. In the example described here, the coating 8 constitutes itself a support. Alternatively, a support could be added around the coating 8. This support could be chosen as that of the embodiment of Figure 2. The coating 8 could impose a different cross section to the light device 2, for example a cylindrical cross section, rectangular, or any other transverse profile achievable by coextrusion.
Les travaux de la Demanderesse ont démontré que le dispositif lumineux 2 ainsi réalisé est capable de passer les tests flammabilité suivant les normes aéronautiques citées précédemment, grâce à l’absence d’air autour des fibres optiques 6. The work of the Applicant has demonstrated that the light device 2 thus produced is capable of passing the flammability tests according to the aeronautical standards mentioned above, thanks to the absence of air around the optical fibers 6.
La Figure 2 représente une vue en coupe transversale d’un mode de réalisation en variante. Dans ce mode de réalisation, l’enrobage 8 est remplacé par un rempotage 10, et le support 12 devient nécessaire, et entoure le rempotage 10 dans lequel est noyé le cœur 4 de fibres optiques 6. Figure 2 is a cross-sectional view of an alternative embodiment. In this embodiment, the coating 8 is replaced by a potting 10, and the support 12 becomes necessary, and surrounds the potting 10 in which is embedded the core 4 of optical fibers 6.
Afin de noyer le cœur 4 dans le rempotage 10, il convient d’utiliser une matière de rempotage flexible, transparente ou diffusante ou opalescente et ayant des propriétés ignifuges. Dans l’exemple décrit ici, la matière de rempotage est de type silicone ou polyuréthane. Cette matière est déposée soit par gravité soit sous pression dans le support 12. Dans l’exemple décrit ici, le support 12 est réalisé dans une matière de type silicone, polyuréthane, PTFE (Polytétrafluoroéthylène), FEP (Fluorinated Ethylene Propylene) ou encore THV (Terpolymer oftetrafluoroethylene, Hexafluoropropylene and Vinylidene fluoride). In order to drown the heart 4 in the potting 10, it is necessary to use a flexible potting material, transparent or diffusing or opalescent and having fireproof properties. In the example described here, the potting material is of silicone or polyurethane type. This material is deposited either by gravity or under pressure in the support 12. In the example described here, the support 12 is made of a silicone material, polyurethane, PTFE (Polytetrafluoroethylene), FEP (Fluorinated Ethylene Propylene) or THV (Tertiofluorethylene terpolymer, hexafluoropropylene and vinylidene fluoride).
Dans l’exemple décrit ici, la quantité de rempotage 10 est choisie de sorte que le volume de rempotage 10 soit 1,2 fois supérieur au volume du cœur 4. Les travaux de la Demanderesse ont démontré que cela permet d’obtenir des performances ignifuges satisfaisantes tout en maintenant de bonnes propriétés de diffusion de lumière. In the example described here, the amount of potting 10 is chosen so that the potting volume 10 is 1.2 times greater than the volume of the core 4. The Applicant's work has demonstrated that this makes it possible to obtain flame retardant performance. satisfactory while maintaining good light scattering properties.
La matière du support 12 doit être flexible, opaque ou translucide ou opalescente et ininflammable. La forme du support 12 doit correspondre à la forme recherchée pour le dispositif lumineux 2. Comme pour la Figure 1, le support 12 pourrait imposer une section transversale différente au dispositif lumineux 2, par exemple une section transversale cylindrique, rectangulaire, ou tout autre profil transversal réalisable par extrusion. De manière préférée, l’épaisseur du support 12 est comprise entre 0,5 mm et 2mm, afin de présenter à la fois de bonnes propriétés ignifuges et lumineuses. The material of the support 12 must be flexible, opaque or translucent or opalescent and non-flammable. The shape of the support 12 must correspond to the desired shape for the light device 2. As for Figure 1, the support 12 could impose a different cross section to the light device 2, for example a cylindrical cross section, rectangular, or any other profile transversal workable by extrusion. Preferably, the thickness of the support 12 is between 0.5 mm and 2 mm, in order to have both good flame-retardant and luminous properties.
La Figure 3 représente une vue de face d’un dispositif lumineux 2 mettant en œuvre le mode de réalisation de la Figure 1 ou de la Figure 2. Comme on peut le voir sur cette figure, le dispositif lumineux 2 présente une forme de profilé dont la section transversale dépend du profil et du mode de réalisation choisi. FIG. 3 represents a front view of a light device 2 embodying the embodiment of FIG. 1 or FIG. 2. As can be seen in this figure, the light device 2 has a profile shape of which the cross section depends on the profile and the chosen embodiment.
A une extrémité, le dispositif lumineux comprend un connecteur 14 permettant de le relier à une source lumineuse non représentée, et un manchon 16 opaque qui sert à réaliser la jonction entre le connecteur 14 et l’enrobage 8 ou le support 12, et à limiter les fuites de lumière au niveau du connecteur 14. At one end, the light device comprises a connector 14 for connecting it to a light source, not shown, and an opaque sleeve 16 which serves to make the junction between the connector 14 and the coating 8 or the support 12, and to limit the light leaks at the connector 14.
En variante, le dispositif lumineux 2 pourrait comprendre d’autres types de connecteur, ou venir s’engager dans un connecteur de sortie d’une source lumineuse, et le manchon 16 pourrait être réalisé différemment ou être omis. Alternatively, the light device 2 could comprise other types of connector, or engage in an output connector of a light source, and the sleeve 16 could be made differently or omitted.
En variante, le dispositif lumineux 2, peut comprendre un deuxième connecteur 14 pour pouvoir connecter une source lumineuse à l’autre extrémité - comme représenté sur la Figure 4 - ou rassembler les deux extrémités dans le même connecteur 14 afin de former une boucle - comme représenté sur la Figure 5. Alternatively, the light device 2 may comprise a second connector 14 to be able to connect a light source to the other end - as shown in FIG. 4 - or to bring the two ends together in the same connector 14 to form a loop - as shown in Figure 5.
Grâce à la combinaison de la fibre optique en polyméthacrylate de méthyle, de la réalisation spécifique du cœur 4 et de l’enrobage 8 ou du rempotage 10 combiné au support 12, le dispositif lumineux 2 permet de restituer une lumière homogène sur une longueur pouvant aller jusqu’à 4 mètres, tout en présentant une flexibilité excellente, permettant notamment un rayon de courbure de l’ordre de 25 mm sans problème mécanique ni perte lumineuse significative. Le support 12 pourra présenter une section fermée ou ouverte selon les variantes retenues. By virtue of the combination of the polymethyl methacrylate optical fiber, the specific embodiment of the core 4 and the coating 8 or the potting combined with the support 12, the luminous device 2 makes it possible to restore a homogeneous light over a length that can go up to 4 meters, while presenting an excellent flexibility, allowing in particular a radius of curvature of the order of 25 mm without mechanical problem nor significant luminous loss. The support 12 may have a closed or open section according to the selected variants.

Claims

Revendications claims
1. Dispositif lumineux pour cabine d’aéronef, comprenant un cœur (4) de fibres optiques (6) en polyméthacrylate de méthyle, caractérisé en ce que le cœur (4) de fibres optiques (6) est intégralement noyé dans un matériau (8, 10) ayant des propriétés ignifuges. An aircraft cabin light device comprising a core (4) of optical fibers (6) of polymethylmethacrylate, characterized in that the core (4) of optical fibers (6) is integrally embedded in a material (8). 10) having flame retardant properties.
2. Dispositif selon la revendication 1, dans lequel le matériau (8) est un enrobage réalisé dans une matière de type silicone. 2. Device according to claim 1, wherein the material (8) is a coating made of a silicone material.
3. Dispositif selon la revendication 1, dans lequel le matériau (10) est un rempotage réalisé dans une matière de type silicone ou polyuréthane. 3. Device according to claim 1, wherein the material (10) is a potting made of a material of the silicone or polyurethane type.
4. Dispositif lumineux pour cabine d’aéronef selon l’une des revendications 1 à 3, comprenant en outre un support (12) ininflammable agencé pour recevoir le cœur (4) de fibres optiques noyé dans le matériau (10). 4. luminaire device for aircraft cabin according to one of claims 1 to 3, further comprising a support (12) non-flammable arranged to receive the core (4) of optical fibers embedded in the material (10).
5. Dispositif lumineux selon la revendication 4, dans lequel le support (12) est réalisé dans une matière de type silicone, polyuréthane ou PTFE (Polytétrafluoroéthylène), FEP (Fluorinated Ethylene Propylene) ou THV5. Light device according to claim 4, wherein the support (12) is made of a material of the silicone type, polyurethane or PTFE (Polytetrafluoroethylene), FEP (Fluorinated Ethylene Propylene) or THV
(Terpolymer of tetrafluoroethylene, Hexafluoropropylene and Vinylidene fluoride). (Terpolymer of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride).
6. Dispositif lumineux pour cabine d’aéronef selon la revendication 4 ou 5, dans lequel le support (12) présente une section ouverte. Aircraft cabin light device according to claim 4 or 5, wherein the carrier (12) has an open section.
7. Dispositif lumineux pour cabine d’aéronef selon la revendication 4 ou 5, dans lequel le support (12) présente une section fermée. Aircraft cabin light device according to claim 4 or 5, wherein the carrier (12) has a closed section.
8. Dispositif lumineux pour cabine d’aéronef selon l’une des revendications 4 à 7, dans lequel le support (12) est flexible et opaque, translucide ou opalescent. 8. An aircraft cabin light device according to one of claims 4 to 7, wherein the support (12) is flexible and opaque, translucent or opalescent.
9. Dispositif lumineux pour cabine d’aéronef selon l’une des revendications précédentes, dans lequel le cœur (4) de fibres optiques comprend entre 7 et 120 fibres optiques. 9. Light device for aircraft cabin according to one of the preceding claims, wherein the core (4) of optical fibers comprises between 7 and 120 optical fibers.
10. Dispositif lumineux pour cabine d’aéronef selon la revendication 9, dans lequel dans lequel le cœur (4) de fibres optiques comprend 30 fibres optiques. Aircraft cabin light apparatus according to claim 9, wherein the optical fiber core (4) comprises 30 optical fibers.
11. Dispositif lumineux pour cabine d’aéronef selon l’une des revendications précédentes, dans lequel les fibres optiques du cœur (4) présentent chacune un diamètre sensiblement compris entre 250 à 1 OOOmhi chacune. 11. Light device for aircraft cabin according to one of the preceding claims, wherein the optical fibers of the core (4) each have a diameter substantially between 250 to 1 000mhi each.
12. Dispositif lumineux pour cabine d’aéronef selon la revendication 11, dans lequel les fibres optiques du cœur (4) présentent chacune un diamètre sensiblement égal à 500mhi chacune. 12. Light device for aircraft cabin according to claim 11, wherein the optical fibers of the core (4) each have a diameter substantially equal to 500mhi each.
13. Dispositif selon l’une des revendications précédentes, caractérisé en ce qu’il est flexible, et en qu’il ne présente pas de fuite significative de lumière lorsqu’il est plié avec un rayon de courbure de l’ordre de 25 mm. 13. Device according to one of the preceding claims, characterized in that it is flexible, and that it does not show significant leakage of light when folded with a radius of curvature of about 25 mm .
14. Procédé de fabrication d’un dispositif lumineux pour cabine d’aéronef comprenant les opérations suivantes : 14. A method of manufacturing an aircraft cabin light device comprising the following operations:
a) Préparer un cœur (4) de fibres optiques (6) en polyméthacrylate de méthyle, b) Noyer le cœur de fibres optiques (6) dans un matériau (8, 10) ayant des propriétés ignifuges.  a) Prepare a fiber core (4) of polymethylmethacrylate optical fibers (6). b) Core the fiber optic core (6) in a material (8, 10) having flame retardant properties.
15. Procédé selon la revendication 14, dans lequel le matériau (8, 10) est un enrobage ou un rempotage, et dans lequel l’opération b) comprend une extrusion ou une co- extrusion du cœur (4) de fibres optiques (6) et du matériau (8,10). The method of claim 14, wherein the material (8, 10) is a coating or a potting, and wherein the step b) comprises extruding or coextruding the optical fiber core (4) (6). ) and the material (8, 10).
PCT/FR2019/050157 2018-01-29 2019-01-24 Luminous device for aircraft cabin WO2019145644A1 (en)

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FR1850691A FR3077396B1 (en) 2018-01-29 2018-01-29 LIGHT DEVICE FOR AIRCRAFT CABIN
FR1850691 2018-01-29

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2714147A1 (en) 1993-12-17 1995-06-23 Bernasson Andre Optical fiber with side lighting.
US20110103757A1 (en) * 2008-02-14 2011-05-05 Jochen Alkemper Side-emitting step index fiber
FR2975709A1 (en) * 2011-05-27 2012-11-30 Bat Buro Arquitectura Textil Textile sheet for oven, has binding threads formed by bundle of polyester filaments that are covered with sheath, and optical fibers locally fixed with binding threads, where sheath is made of thermoplastic material
US20160208434A1 (en) * 2013-09-30 2016-07-21 Saint-Gobian Adfors Fabric comprising a transparent, fire-resistant coating
US20160299276A1 (en) * 2015-04-08 2016-10-13 Furukawa Electric Co., Ltd. Linear light guide, linear light guide structure, planar light guide structure, and illuminating device
WO2016198772A1 (en) 2015-06-08 2016-12-15 Brochier Technologies Method for producing a lighting device and resulting device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2714147A1 (en) 1993-12-17 1995-06-23 Bernasson Andre Optical fiber with side lighting.
US20110103757A1 (en) * 2008-02-14 2011-05-05 Jochen Alkemper Side-emitting step index fiber
FR2975709A1 (en) * 2011-05-27 2012-11-30 Bat Buro Arquitectura Textil Textile sheet for oven, has binding threads formed by bundle of polyester filaments that are covered with sheath, and optical fibers locally fixed with binding threads, where sheath is made of thermoplastic material
US20160208434A1 (en) * 2013-09-30 2016-07-21 Saint-Gobian Adfors Fabric comprising a transparent, fire-resistant coating
US20160299276A1 (en) * 2015-04-08 2016-10-13 Furukawa Electric Co., Ltd. Linear light guide, linear light guide structure, planar light guide structure, and illuminating device
WO2016198772A1 (en) 2015-06-08 2016-12-15 Brochier Technologies Method for producing a lighting device and resulting device

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EP3746698A1 (en) 2020-12-09
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