EP0165260A1 - Luminous display device. - Google Patents

Luminous display device.

Info

Publication number
EP0165260A1
EP0165260A1 EP84904141A EP84904141A EP0165260A1 EP 0165260 A1 EP0165260 A1 EP 0165260A1 EP 84904141 A EP84904141 A EP 84904141A EP 84904141 A EP84904141 A EP 84904141A EP 0165260 A1 EP0165260 A1 EP 0165260A1
Authority
EP
European Patent Office
Prior art keywords
light
downstream end
section
shutter member
front panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84904141A
Other languages
German (de)
French (fr)
Other versions
EP0165260B1 (en
Inventor
Robert Fournier
Roland Gasmann
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.)
CETEHOR (CENTRE TECHNIQUE DE L'INDUSTRIE HORLOGERE)
CETEHOR
Original Assignee
CETEHOR (CENTRE TECHNIQUE DE L'INDUSTRIE HORLOGERE)
CETEHOR
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 CETEHOR (CENTRE TECHNIQUE DE L'INDUSTRIE HORLOGERE), CETEHOR filed Critical CETEHOR (CENTRE TECHNIQUE DE L'INDUSTRIE HORLOGERE)
Priority to AT84904141T priority Critical patent/ATE36086T1/en
Publication of EP0165260A1 publication Critical patent/EP0165260A1/en
Application granted granted Critical
Publication of EP0165260B1 publication Critical patent/EP0165260B1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
    • G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/305—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being the ends of optical fibres

Definitions

  • the present invention relates to a light display device comprising at least one front panel provided with a regular network of openings each of which is associated with a downstream end of a light conductor and a shutter member controlled by an electro- magnet, the upstream end of the light conductors being associated with a light source.
  • Display matrices of this type are already known in which the light conductors are constituted by bundles of optical fibers and where the concealment means comprise rotatable discs around an axis substantially parallel to the end sections of the fibers optical.
  • the present invention proposes to overcome this drawback by providing a relatively economical device which allows a light display, in particular of fixed, variable or continuously scrolling alphanumeric characters.
  • each opening of the front panel is associated with a rigid body provided with an axial bore in which is engaged a section adjacent to the downstream end of a conductor.
  • this body carries said electromagnet as well as an opaque cap constituting said shutter member capable of pivoting about an axis substantially perpendicular to said section of light conductor, between a first stable position called the closed position and a second stable position called the lighting position.
  • the opaque cap is linked to a bipolar permanent magnet pivoting around said axis substantially perpendicular to said section of light conductor, and this magnet is arranged to be able to occupy two stable positions corresponding respectively to said closed position and at said lighting position of said opaque cap, these positions being a function of the direction of an alternating magnetic field generated by said electromagnet.
  • the moving element of the shutter member comprising said opaque cap and said permanent magnet preferably has an inertia less than: 0.1. 10-9 Kg.m 2 .
  • the light conductors each advantageously comprise a downstream end section, oriented towards an opening of the front panel, the cross section of which is smaller than that of the upstream end section, oriented towards the light source.
  • the upstream end sections of these light conductors advantageously have a substantially frustoconical shape, the downstream end sections having a substantially cylindrical shape.
  • these light conductors can have a conical or frustoconical shape over their entire length.
  • the upstream ends of the light conductors are preferably connected to a light conducting base plate adjacent to the light source.
  • the light conductors are formed by cylindrical, conical or frustoconical points secured to a base plate and erected substantially perpendicularly to a surface of this plate. These points and this plate are preferably made of a molded block of light-conducting synthetic material.
  • Fig. 1 represents an overall perspective view of the light display device according to the invention
  • Fig. 2 shows an exploded view, in cross section, of the device of FIG. 1,
  • Fig. 3 represents a partial perspective view of a particular embodiment of the light conductors of the device according to the invention
  • Fig. 4 represents a schematic sectional view of another embodiment of the light conductors and their arrangement in the device according to the invention
  • Fig. 5 shows a view schematically illustrating the operating principle of the shutter member
  • Fig. 6 shows a perspective view of a preferred embodiment of the shutter member.
  • the light display device 10 is in the form of a housing provided with a front panel 11 comprising a regular network of openings 12 which may or may not be individually lit from the rear so as to allow the writing alphanumeric characters arranged in rows or columns in order to display a fixed message, variable in time or scrolling continuously.
  • This display is made using a control logic (not shown) which can be connected to a console 13 provided with a keyboard 14 allowing the introduction of data relating to the message to be displayed.
  • the housing of the display device 10 is for example constituted by a sheet bent in the shape of a U whose face front has an opening 15 intended to receive a matrix 16 composed of a set of cells 17 provided for each receiving a shutter member 18.
  • the front face 19 of the matrix 16 is provided with a network of openings 12 each of which is disposed substantially in the center of the surface constituting the bottom of one of the cells 17.
  • the front panel 11 of the display device 10 is preferably constituted by several front faces 19 of several matrices 16 juxtaposed.
  • Each of these dies has two fixing flanges 20 intended to bear between the folded edges 21 of the housing of the device 10. Openings 22 are formed through said fixing flanges 20 and the support edges 21 of the housing to allow the assembly of these various components, for example by means of screws 23.
  • the shutter members 18 are mounted on a printed circuit board 24 whose conductive tracks of the printed circuit are individually connected to the connectors (not shown) of a connection strip 25.
  • the light conductors 26 consist of a unitary block preferably produced by molding using a translucent material which diffuses the light.
  • This block advantageously consists of a base plate 27 bristling with a series of points 28 each of which corresponds to a shutter member 18 and to an opening 12 in the front panel.
  • the points 28 each consist of an upstream end section 29 of frustoconical shape and of a downstream end section 30 of cylindrical shape.
  • the light conductors 26 are illuminated from the rear using a lighting module 31 essentially composed of a fluorescent tube 32 and a reflector 33 mounted respectively on two bases 34 and a support 35 secured to a housing 36.
  • the lighting module is preferably housed in a housing comprising lateral flanges 37 which can be coupled to the housing of the device 10 by means of notches 38 in which engage pins 39 shown in broken lines. In this way, the lighting module can be easily separated from the rest of the device, for example to allow the replacement of a defective lighting tube, cleaning the reflector etc ...
  • each shutter member 18 At the time of assembly, the downstream end sections 30 of the light conductors will be engaged respectively in a central bore of each shutter member 18. These shutter members associated respectively with the light conductors will be introduced into the cells 17 of the dies 16.
  • the light generated by the fluorescent tube 32 is reflected by the reflector 33 and diffused by the base plate 27 and transmitted towards the openings 12 of the front panel by the tips 28.
  • the openings 12 can be obscured individually by means of the shutter members 18 manipulated by a control logic.
  • Fig. 3 illustrates another embodiment of the light conductors.
  • the points 28 'integral with the base plate 27' are in the form of truncated cones whose base which constitutes the upstream end is oriented towards the light source constituted as previously of a fluorescent tube 32 ' and a 33 'parabolic reflector.
  • Fig. 4 schematically shows another embodiment of the light conductors which are in the form of individual elements 40 each composed of a downstream end section 41 of circular, square or any other cross-section, and of a section upstream end 42 of frustoconical shape.
  • the area of the upstream end section, i.e. that which is directed towards the light source is preferably larger than the area of the downstream end section, so that said upstream end collects a maximum of light emitted by the light source 43 and reflected by the reflector 44.
  • the shape of the straight sections of the upstream and downstream end sections may be any.
  • Fig. 5 schematically represents the electromagnet for controlling the shutter member.
  • This closure member preferably comprises a spherical cap 50 linked by a rigid rod 51 to a magnet bipolar permament 52, preferably in the form of a magnetic bar.
  • the spherical cap 50, the rod 51 and the bipolar magnet 52 constitute the rotary movable assembly around an axis 53. This axis is substantially perpendicular to the downstream end section 54 of the light conductor.
  • the control electromagnet consists of a U-shaped stator 55 carrying a coil 56 intended to generate an alternating magnetic field which determines the two stable positions of the permanent magnet 52 and therefore of the spherical cap 50 which associated with it.
  • the spherical cap 52 obscures an opening 12 of the front panel 11.
  • the spherical cap In its position 50 'corresponding to the position 52' of the permanent magnet, the spherical cap has tilted so as to release the passage of the light emitted by the downstream end of the section of light conductor 54 so that the corresponding opening 12 appears as a light spot.
  • control of the obturation member can be carried out at relatively high frequency, equal to or greater than 24 cycles per second, which allows, thanks to the retinal persistence, display scrolling messages continuously or intermittently on the front panel.
  • Fig. 6 shows a perspective view of the shutter member associated with each of the light conductors and with each of the openings in the front panel.
  • This shutter member essentially consists of a rigid body 60 serving as a support for the electromagnet provided with a U-shaped stator 61, a coil 62 mounted on one of the branches of the stator and d 'a magnetic bar 63 housed in a plastic sleeve 64 connected by an arm 65 to a spherical cap 66.
  • the body of the shutter member 60 comprises two arms 67 and 68 on which are articulated around a common axis 69 on the one hand the sleeve 64 and on the other hand an arm 70 diametrically opposite the arm 65 and also carrying the spherical cap 66.
  • the axis 69 is substantially perpendicular to the axis of the central bore 71 passing through the body 60 and intended to receive the downstream end section (not shown) of the light conductor.
  • Two pins 72 and 73 held by appropriate supports 74 and 75 integral with the body 60 ensure the electrical connection of the coil 62 of the electromagnet.
  • the particularly compact construction of the shutter member allows very dense implantation of openings, and consequently of light spots on the front panel of the display device.
  • the movement of the shutter member is caused by the action of a magnetic field with alternating polarity, created in the two branches of the U-shaped stator, and acting on the bipolar magnet secured to the shutter member.
  • the peculiarity lies in the fact that the material of the U-shaped stator is remanent, that is to say that it keeps, for a theoretically infinite time, its magnetization, the polarity of the latter being defined by the direction of the last electrical pulse received by the winding.
  • the screen is bistable and requires no external energy to maintain one of its two states. Among other things, it does not use gravity, which allows it to function in all positions. The only energy he uses is the remanent magnetization existing between the stator and the magnet.
  • the average power consumed, at maximum oscillation speed is below 100 milliwatts
  • consumption is, of course, zero when a displayed message is immobilized.
  • the screen can operate using very short pulses, which can be much less than the mechanical response time of the shutter member.
  • the magnetic memory effect of stator allows the shutter member to take its position well after the end of the control pulse. Thus, even if, by an external action, the shutter member is blocked in its initial position, and it is released long after the impulse, it will recover its final position by itself.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Dispositif d'affichage lumineux comprenant au moins un panneau frontal pourvu d'un réseau régulier d'ouvertures dont chacune est associée à une extrémité aval d'un conducteur de lumière et à un organe d'obturation commandé par un électro-aimant, l'extrémité amont des conducteurs de lumière étant associée à une source de lumière. Il comporte essentiellement un organe d'obturation constitué par un corps (60) pourvu d'un alésage axial (71) destiné à loger l'extrémité aval d'un conducteur de lumière. Ce corps porte un stator (61) pourvu de bobines d'excitation (62) et un aimant bipolaire (63) rotatif autour d'un axe (69). L'aimant bipolaire (63) est lié à une calotte sphérique (66) susceptible de pivoter autour de l'axe (69) entre une position d'obturation dans laquelle l'extrémité aval du tronçon de conducteur de lumière est occulté et une position d'éclairement dans laquelle l'extrémité aval de ce conducteur de lumière apparait comme un point lumineux dans une ouverture du panneau frontal. Ce dispositif permet un affichage de messages fixes, variables ou défilant en continu.Luminous display device comprising at least one front panel provided with a regular network of openings, each of which is associated with a downstream end of a light conductor and with a shutter member controlled by an electromagnet, the upstream end of the light conductors being associated with a light source. It essentially comprises a shutter member constituted by a body (60) provided with an axial bore (71) intended to accommodate the downstream end of a light conductor. This body carries a stator (61) provided with excitation coils (62) and a bipolar magnet (63) rotating around an axis (69). The bipolar magnet (63) is linked to a spherical cap (66) capable of pivoting around the axis (69) between a closed position in which the downstream end of the section of light conductor is obscured and a position in which the downstream end of this light conductor appears as a point of light in an opening in the front panel. This device allows a display of fixed, variable or scrolling messages continuously.

Description

DISPOSITIF D'AFFICHAGE LUMINEUX LIGHT DISPLAY DEVICE
La présente invention concerne un dispositif d'affichage lumineux comprenant au moins un panneau frontal pourvu d'un réseau régulier d'ouvertures dont chacune est associée à une extrémité aval d'un conducteur de lumière et un organe d'obturation commandé par un électro-aimant, l'extrémité amont des conducteurs de lumière étant associée à une source de lumière.The present invention relates to a light display device comprising at least one front panel provided with a regular network of openings each of which is associated with a downstream end of a light conductor and a shutter member controlled by an electro- magnet, the upstream end of the light conductors being associated with a light source.
On connait déjà des matrices d'affichage de ce type dans lesquelles les conducteurs de lumière sont constitués par des faisceaux de fibres optiques et où les moyens d'occultation comportent des disques rotatifs autour d'un axe sensiblement parallèle aux tronçons d'extrémité des fibres optiques.Display matrices of this type are already known in which the light conductors are constituted by bundles of optical fibers and where the concealment means comprise rotatable discs around an axis substantially parallel to the end sections of the fibers optical.
Par ailleurs, la demande de brevet européen publiée sous le No 73842 décrit un système d'affichage comportant un panneau muni d'un réseau d'ouvertures derrière lesquelles peuvent se être amenés alternativement deux volets de couleurs différentes.Furthermore, the European patent application published under No. 73842 describes a display system comprising a panel provided with a network of openings behind which two flaps of different colors can be brought in alternately.
Ces dispositifs qui donnent satisfaction dans certains cas, présentent une inertie relativement importante, ce qui les rend inutilisables pour d'autres applications, notamment lorsqu'on souhaite effectuer un affichage alphanumérique défilant en continu sur le panneau.These devices, which are satisfactory in certain cases, have a relatively high inertia, which makes them unusable for other applications, in particular when an alphanumeric display scrolling continuously on the panel is desired.
La présente invention se propose de pallier cet inconvénient en réalisant un dispositif relativement économique qui permet un affichage lumineux, notamment de caractères alphanumériques fixes, variables ou défilant en continu.The present invention proposes to overcome this drawback by providing a relatively economical device which allows a light display, in particular of fixed, variable or continuously scrolling alphanumeric characters.
Dans ce but, le dispositif selon l'invention est caractérisé en ce qu'à chaque ouverture du panneau frontal est associé un corps rigide pourvu d'un alésage axial dans lequel est engagé un tronçon adjacent à l'extrémité aval d'un conducteur de lumière, en ce que ce corps porte ledit électro-aimant ainsi qu'une calotte opaque constituant ledit organe d'obturation susceptible de pivoter autour d'un axe sensiblement perpendiculaire audit tronçon de conducteur de lumière, entre une première position stable dite position d'obturation et une seconde position stable dite position d'éclairement.For this purpose, the device according to the invention is characterized in that each opening of the front panel is associated with a rigid body provided with an axial bore in which is engaged a section adjacent to the downstream end of a conductor. light, in that this body carries said electromagnet as well as an opaque cap constituting said shutter member capable of pivoting about an axis substantially perpendicular to said section of light conductor, between a first stable position called the closed position and a second stable position called the lighting position.
Selon un mode de réalisation préféré, la calotte opaque est liée à un aimant permanent bipolaire pivotant autour dudit axe sensiblement perpendiculaire audit tronçon de conducteur de lumière, et cet aimant est agencé pour pouvoir occuper deux positions stables correspondant respectivement à ladite position d'obturation et à ladite position d'éclairement de ladite calotte opaque, ces positions étant fonction du sens d'un champ magnétique alterné engendré par ledit électroaimant.According to a preferred embodiment, the opaque cap is linked to a bipolar permanent magnet pivoting around said axis substantially perpendicular to said section of light conductor, and this magnet is arranged to be able to occupy two stable positions corresponding respectively to said closed position and at said lighting position of said opaque cap, these positions being a function of the direction of an alternating magnetic field generated by said electromagnet.
L'équipage mobile de l'organe d'obturation comportant ladite calotte opaque et ledit aimant permanent a de préférence une inertie inférieure à : 0,1 . 10-9 Kg.m2.The moving element of the shutter member comprising said opaque cap and said permanent magnet preferably has an inertia less than: 0.1. 10-9 Kg.m 2 .
Les conducteurs de lumière comportent avantageusement chacun un tronçon d'extrémité aval, orienté vers une ouverture du panneau frontal, dont la section est inférieure à celle du tronçon d'extrémité amont, orienté vers la source de lumière. Les tronçons d'extrémité amont de ces conducteurs de lumière ont avantageusement une forme sensiblement tronconique, les tronçons d'extrémité aval ayant une forme sensiblement cylindrique. Toutefois, ces conducteurs de lumière peuvent avoir une forme conique ou tronconique sur toute leur longueur.The light conductors each advantageously comprise a downstream end section, oriented towards an opening of the front panel, the cross section of which is smaller than that of the upstream end section, oriented towards the light source. The upstream end sections of these light conductors advantageously have a substantially frustoconical shape, the downstream end sections having a substantially cylindrical shape. However, these light conductors can have a conical or frustoconical shape over their entire length.
Les extrémités amont des conducteurs de lumière sont de préférence liés à une plaque de base conductrice de lumière adjacente à la source de lumière.The upstream ends of the light conductors are preferably connected to a light conducting base plate adjacent to the light source.
Selon un mode de réalisation préféré, les conducteurs de lumière sont constitués par des pointes cylindriques, coniques ou tronconiques solidaires d'une plaque de base et dressées sensiblement perpendiculairement par rapport à une surface de cette plaque. Ces pointes et cette plaque sont de préférence réalisées d'un bloc moulé en matière synthétique conductrice de la lumière. La présente invention sera mieux comprise en référence à la description d'un exemple de réalisation et du dessin annexé dans lequel :According to a preferred embodiment, the light conductors are formed by cylindrical, conical or frustoconical points secured to a base plate and erected substantially perpendicularly to a surface of this plate. These points and this plate are preferably made of a molded block of light-conducting synthetic material. The present invention will be better understood with reference to the description of an exemplary embodiment and the attached drawing in which:
La fig. 1 représente une vue d'ensemble en perspective du dispositif d'affichage lumineux selon l'invention,Fig. 1 represents an overall perspective view of the light display device according to the invention,
La fig. 2 représente une vue éclatée, en coupe transversale, du dispositif de la fig. 1,Fig. 2 shows an exploded view, in cross section, of the device of FIG. 1,
La fig. 3 représente une vue partielle en perspective d'une forme de réalisation particulière des conducteurs de lumière du dispositif selon l'invention,Fig. 3 represents a partial perspective view of a particular embodiment of the light conductors of the device according to the invention,
La fig. 4 représente une vue schématique en coupe d'une autre forme de réalisation des conducteurs de lumière et de leur agencement dans le dispositif selon l'invention,Fig. 4 represents a schematic sectional view of another embodiment of the light conductors and their arrangement in the device according to the invention,
La fig. 5 représente une vue illustrant schématiquement le principe de fonctionnement de l'organe d'obturation et,Fig. 5 shows a view schematically illustrating the operating principle of the shutter member and,
La fig. 6 représente une vue en perspective d'une forme de réalisation préférée de l'organe d'obturation.Fig. 6 shows a perspective view of a preferred embodiment of the shutter member.
En référence à la fig. 1, le dispositif d'affichage lumineux 10 se présente sous la forme d'un boîtier pourvu d'un panneau frontal 11 comportant un réseau régulier d'ouvertures 12 qui peuvent ou non être éclairées individuellement par l'arrière de manière à permettre l'inscription de caractères alphanumériques disposés en lignes ou en colonnes dans le but d'afficher un message fixe, variable dans le temps ou défilant en continu. Cet affichage se fait grâce à une logique de commande (non représenttée) qui peut être connectée à une console 13 pourvue d'un clavier 14 permettant l'introduction de données relatives au message à afficher.With reference to fig. 1, the light display device 10 is in the form of a housing provided with a front panel 11 comprising a regular network of openings 12 which may or may not be individually lit from the rear so as to allow the writing alphanumeric characters arranged in rows or columns in order to display a fixed message, variable in time or scrolling continuously. This display is made using a control logic (not shown) which can be connected to a console 13 provided with a keyboard 14 allowing the introduction of data relating to the message to be displayed.
En référence à la fig. 2, le boîtier du dispositif d'affichage 10 est par exemple constitué par une tôle pliée en forme de U dont la face frontale comporte une ouverture 15 destinée à recevoir une matrice 16 composée d'un ensemble d'alvéoles 17 prévus pour recevoir chacun un organe d'obturation 18. La face antérieure 19 de la matrice 16 est pourvue du réseau d'ouvertures 12 dont chacune est disposée sensiblement au centre de la surface constituant le fond d'un des alvéoles 17. Le panneau frontal 11 du dispositif d'affichage 10 est de préférence constitué par plusieurs faces antérieures 19 de plusieurs matrices 16 juxtaposées. Chacune de ces matrices comporte deux rebords de fixation 20 destinés à prendre appui entre les bords repliés 21 du boîtier du dispositif 10. Des ouvertures 22 sont ménagées à travers lesdits rebords de fixation 20 et les bords d'appui 21 du boîtier pour permettre l'assemblage de ces divers composants par exemple au moyen de vis 23.With reference to fig. 2, the housing of the display device 10 is for example constituted by a sheet bent in the shape of a U whose face front has an opening 15 intended to receive a matrix 16 composed of a set of cells 17 provided for each receiving a shutter member 18. The front face 19 of the matrix 16 is provided with a network of openings 12 each of which is disposed substantially in the center of the surface constituting the bottom of one of the cells 17. The front panel 11 of the display device 10 is preferably constituted by several front faces 19 of several matrices 16 juxtaposed. Each of these dies has two fixing flanges 20 intended to bear between the folded edges 21 of the housing of the device 10. Openings 22 are formed through said fixing flanges 20 and the support edges 21 of the housing to allow the assembly of these various components, for example by means of screws 23.
Les organes d'obturation 18 sont montés sur une carte imprimée 24 dont les pistes conductrices du circuit imprimé sont raccordées individuellement aux connecteurs (non représentés) d'une barrette de raccordement 25.The shutter members 18 are mounted on a printed circuit board 24 whose conductive tracks of the printed circuit are individually connected to the connectors (not shown) of a connection strip 25.
Dans l'exemple représenté, les conducteurs de lumière 26 se composent d'un bloc unitaire réalisé de préférence par moulage à l'aide d'une matière translucide qui diffuse la lumière. Ce bloc se compose avantageusement d'une plaque de base 27 hérissée d'une série de pointes 28 dont chacune correspond à un organe d'obturation 18 et à une ouverture 12 du panneau frontal. Dans l'exemple représenté les pointes 28 se composent chacune d'un tronçon d'extrémité amont 29 de forme tronconique et d'un tronçon d'extrémité aval 30 de forme cylindrique.In the example shown, the light conductors 26 consist of a unitary block preferably produced by molding using a translucent material which diffuses the light. This block advantageously consists of a base plate 27 bristling with a series of points 28 each of which corresponds to a shutter member 18 and to an opening 12 in the front panel. In the example shown, the points 28 each consist of an upstream end section 29 of frustoconical shape and of a downstream end section 30 of cylindrical shape.
L'éclairage des conducteurs de lumière 26 s'effectue par l'arrière à l'aide d'un module d'éclairage 31 composé essentiellement d'un tube fluorescent 32 et d'un réflecteur 33 montés respectivement sur deux embases 34 et un support 35 solidaire d'un boîtier 36.The light conductors 26 are illuminated from the rear using a lighting module 31 essentially composed of a fluorescent tube 32 and a reflector 33 mounted respectively on two bases 34 and a support 35 secured to a housing 36.
Le module d'éclairage est de préférence logé dans un boîtier comportant des flasques latéraux 37 pouvant être couplés au boîtier du dispositif 10 au moyen d'encoches 38 dans lesquelles s'engagent des tétons 39 représentés en traits interrompus. De cette manière, le module d'éclairage peut être séparé aisément du reste du dispositif, par exemple pour permettre le remplacement d'un tube d'éclairage défectueux, du nettoyage du réflecteur etc...The lighting module is preferably housed in a housing comprising lateral flanges 37 which can be coupled to the housing of the device 10 by means of notches 38 in which engage pins 39 shown in broken lines. In this way, the lighting module can be easily separated from the rest of the device, for example to allow the replacement of a defective lighting tube, cleaning the reflector etc ...
Au moment du montage, les tronçons d'extrémités avals 30 des conducteurs de lumière seront engagés respectivement dans un alésage central de chaque organe d'obturation 18. Ces organes d'obturation associés respectivement aux conducteurs de lumières seront introduits dans les alvéoles 17 des matrices 16. La lumière engendrée par le tube fluorescent 32 est réfléchie par le réflecteur 33 et diffusée par la plaque de base 27 et transmise en direction des ouvertures 12 du panneau frontal par les pointes 28. En cours de fonctionnement, les ouvertures 12 peuvent être occultées individuellement au moyen des organes d'obturation 18 manipulés par une logique de commande.At the time of assembly, the downstream end sections 30 of the light conductors will be engaged respectively in a central bore of each shutter member 18. These shutter members associated respectively with the light conductors will be introduced into the cells 17 of the dies 16. The light generated by the fluorescent tube 32 is reflected by the reflector 33 and diffused by the base plate 27 and transmitted towards the openings 12 of the front panel by the tips 28. During operation, the openings 12 can be obscured individually by means of the shutter members 18 manipulated by a control logic.
La fig. 3 illustre une autre forme de réalisation des conducteurs de lumière. Dans cet exemple, les pointes 28' solidaires de la plaque de base 27' se présentent sous la forme de troncs de cônes dont la base qui constitue l'extrémité amont est orientée vers la source lumineuse constituée comme précédemment d'un tube fluorescent 32' et d'un réflecteur parabolique 33'.Fig. 3 illustrates another embodiment of the light conductors. In this example, the points 28 'integral with the base plate 27' are in the form of truncated cones whose base which constitutes the upstream end is oriented towards the light source constituted as previously of a fluorescent tube 32 ' and a 33 'parabolic reflector.
La fig. 4 représente schématiquement une autre forme de réalisation des conducteurs de lumière qui se présentent sous la forme d'éléments individuels 40 composés chacun d'un tronçon d'extrémité aval 41 de section droite circulaire, carrée ou de forme quelconque, et d'un tronçon d'extrémité amont 42 de forme tronconique. La surface de la section de l'extrémité amont, c'est-à-dire celle qui est orientée vers la source de lumière est de préférence plus grande que la surface de la section de l'extrémité aval, afin que ladite extrémité amont recueille un maximum de lumière émise par la source lumineuse 43 et réfléchie par le réflecteur 44. La forme des sections droites des tronçons d'extrémité amont et aval peut être quelconque.Fig. 4 schematically shows another embodiment of the light conductors which are in the form of individual elements 40 each composed of a downstream end section 41 of circular, square or any other cross-section, and of a section upstream end 42 of frustoconical shape. The area of the upstream end section, i.e. that which is directed towards the light source is preferably larger than the area of the downstream end section, so that said upstream end collects a maximum of light emitted by the light source 43 and reflected by the reflector 44. The shape of the straight sections of the upstream and downstream end sections may be any.
La fig. 5 représente schématiquement 1'électro-aimant de commande de l'organe d'obturation. Cet organe d'obturation comporte de préférence une calotte sphérique 50 liée par une tige rigide 51 à un aimant permament bipolaire 52 se présentant de, préférence sous la forme d'un barreau aimanté. La calotte sphérique 50, la tige 51 et l'aimant bipolaire 52 consituent l'équipage mobile rotatif autour d'un axe 53. Cet axe est sensiblement perpendiculaire au tronçon d'extrémité aval 54 du conducteur de lumière. L'électro-aimant de commande se compose d'un stator 55 en forme de U portant un bobinage 56 destiné à engendrer un champ magnétique alterné qui détermine les deux positions stables de l'aimant permanent 52 et par conséquent de la calotte sphérique 50 qui lui est associée. Dans la position d'obturation représentée en traits pleins, la calotte sphérique 52 occulte une ouverture 12 du panneau frontal 11. Dans sa position 50' correspondant à la position 52' de l'aimant permanent, la calotte sphérique a basculé de manière à libérer le passage de la lumière émise par l'extrémité aval du tronçon de conducteur de lumière 54 de telle manière que l'ouverture correspondante 12 apparaisse comme un point lumineux.Fig. 5 schematically represents the electromagnet for controlling the shutter member. This closure member preferably comprises a spherical cap 50 linked by a rigid rod 51 to a magnet bipolar permament 52, preferably in the form of a magnetic bar. The spherical cap 50, the rod 51 and the bipolar magnet 52 constitute the rotary movable assembly around an axis 53. This axis is substantially perpendicular to the downstream end section 54 of the light conductor. The control electromagnet consists of a U-shaped stator 55 carrying a coil 56 intended to generate an alternating magnetic field which determines the two stable positions of the permanent magnet 52 and therefore of the spherical cap 50 which associated with it. In the closed position shown in solid lines, the spherical cap 52 obscures an opening 12 of the front panel 11. In its position 50 'corresponding to the position 52' of the permanent magnet, the spherical cap has tilted so as to release the passage of the light emitted by the downstream end of the section of light conductor 54 so that the corresponding opening 12 appears as a light spot.
Grâce à la faible inertie de l'équipage mobile, la commande de l'organe d'obturation peut s'effectuer à fréquence relativement élevée, égale ou supérieure à 24 cycles par seconde, ce qui permet, grâce à la persistance rétinienne, d'afficher des messages défilant en continu ou par intermittence sur le panneau frontal.Thanks to the low inertia of the moving assembly, the control of the obturation member can be carried out at relatively high frequency, equal to or greater than 24 cycles per second, which allows, thanks to the retinal persistence, display scrolling messages continuously or intermittently on the front panel.
La fig. 6 représente une vue en perspective de l'organe d'obturation associé à chacun des conducteurs de lumière et à chacune des ouvertures du panneau frontal. Cet organe d'obturation se compose essentiellement d'un corps rigide 60 servant de support à l'électro-aimant pourvu d'un stator 61 en forme de U, d'un bobinage 62 monté sur l'une des branches du stator et d'un barreau aimanté 63 logé dans un manchon en matière synthétique 64 relié par un bras 65 à une calotte sphérique 66. Le corps de l'organe d'obturation 60 comporte deux bras 67 et 68 sur lesquels sont articulés autour d'un axe commun 69 d'une part le manchon 64 et d'autre part un bras 70 diamétralement opposé au bras 65 et portant également la calotte sphérique 66. L'axe 69 est sensiblement perpendiculaire à l'axe de l'alésage central 71 traversant le corps 60 et destiné à recevoir le tronçon d'extrémité aval (non représenté) du conducteur de lumière. Deux broches 72 et 73 maintenues par des supports appropriés 74 et 75 solidaires du corps 60 assurent le raccordement électrique de la bobine 62 de l'électro-aimant. La construction particulièrement compacte de l'organe d'obturation permet une implantation très dense d'ouvertures, et par conséquent de points lumineux sur le panneau frontal du dispositif d'affichage.Fig. 6 shows a perspective view of the shutter member associated with each of the light conductors and with each of the openings in the front panel. This shutter member essentially consists of a rigid body 60 serving as a support for the electromagnet provided with a U-shaped stator 61, a coil 62 mounted on one of the branches of the stator and d 'a magnetic bar 63 housed in a plastic sleeve 64 connected by an arm 65 to a spherical cap 66. The body of the shutter member 60 comprises two arms 67 and 68 on which are articulated around a common axis 69 on the one hand the sleeve 64 and on the other hand an arm 70 diametrically opposite the arm 65 and also carrying the spherical cap 66. The axis 69 is substantially perpendicular to the axis of the central bore 71 passing through the body 60 and intended to receive the downstream end section (not shown) of the light conductor. Two pins 72 and 73 held by appropriate supports 74 and 75 integral with the body 60 ensure the electrical connection of the coil 62 of the electromagnet. The particularly compact construction of the shutter member allows very dense implantation of openings, and consequently of light spots on the front panel of the display device.
Le mouvement de l'organe d'obturation, d'un quart de tour dans le sens horaire ou d'un quart de tour dans le sens antihoraire, est provoqué par l'action d'un champ magnétique à polarité alternée, créé dans les deux branches du stator en U, et agissant sur l'aimant bipolaire solidaire de l'organe d'obturation.The movement of the shutter member, a quarter turn clockwise or a quarter turn counterclockwise, is caused by the action of a magnetic field with alternating polarity, created in the two branches of the U-shaped stator, and acting on the bipolar magnet secured to the shutter member.
La particularité réside dans le fait que le matériau du stator en U est rémanent, c'est-à-dire qu'il garde, pendant un temps théoriquement infini, son aimantation, la polarité de celle-ci étant définie par le sens de la dernière impulsion électrique reçue par le bobinage.The peculiarity lies in the fact that the material of the U-shaped stator is remanent, that is to say that it keeps, for a theoretically infinite time, its magnetization, the polarity of the latter being defined by the direction of the last electrical pulse received by the winding.
Il se dégage de ceci, deux principaux avantages :Two main advantages emerge from this:
1/ L'occulteur est bistable et ne nécessite aucune énergie extérieure de maintien dans l'un de ses deux états. Entre autres, il ne fait pas appel à la gravité, ce qui lui permet de fonctionner en toutes positions. La seule énergie dont il se sert est l'aimantation rémanente existant entre le stator et l'aimant.1 / The screen is bistable and requires no external energy to maintain one of its two states. Among other things, it does not use gravity, which allows it to function in all positions. The only energy he uses is the remanent magnetization existing between the stator and the magnet.
Bien que la consommation instantanée puisse être relativement importante, de l'ordre de quelques centaines de milliampères,Although instantaneous consumption can be relatively large, on the order of a few hundred milliamps,
- d'une part, la puissance moyenne consommée, à régime maximum d'oscillation, se situe en dessous de 100 milliwatts,- on the one hand, the average power consumed, at maximum oscillation speed, is below 100 milliwatts,
- d'autre part, la consommation est, bien entendu, nulle lorsqu'un message affiché est immobilisé.- on the other hand, consumption is, of course, zero when a displayed message is immobilized.
2/ L'occulteur peut fonctionner grâce à des impulsions de très courte durée, celles-ci pouvant être très inférieures au temps de réponse mécanique de l'organe d'obturation. L'effet de mémoire magnétique du stator permet à l'organe obturateur de prendre sa position bien après la fin de l'impulsion de commande. Ainsi, même si, par une action extérieure, on bloque l'organe obturateur dans sa position initiale, et qu'on le relâche longtemps après l'impulsion, celui-ci retrouvera de lui-même sa position finale.2 / The screen can operate using very short pulses, which can be much less than the mechanical response time of the shutter member. The magnetic memory effect of stator allows the shutter member to take its position well after the end of the control pulse. Thus, even if, by an external action, the shutter member is blocked in its initial position, and it is released long after the impulse, it will recover its final position by itself.
Il est bien entendu que la présente invention n'est pas limitée aux formes de réalisation décrites mais peut se présenter sous diverses variantes évidentes pour l'homme de l'art. It is understood that the present invention is not limited to the embodiments described but can come in various variants obvious to those skilled in the art.

Claims

Revendications claims
1. Dispositif d'affichage lumineux comprenant au moins un panneau frontal pourvu d'un réseau régulier d'ouvertures dont chacune est associée à une extrémité aval d'un conducteur de lumière et à l'organe d'obturation commandé par un électro-aimant, l'extrémité amont des conducteurs de lumière étant associée à une source de lumière; caractérisé en ce qu'à chaque ouverture (12) du panneau frontal (11) est associé un corps rigide (60) pourvu d'un alésage axial (71) dans lequel est engagé un tronçon adjacent à l'extrémité aval d'un conducteur de lumière, en ce que ce corps (60) porte ledit électroaimant (61, 62, 63) ainsi qu'une calotte opaque (66) constituant ledit organe d'obturation susceptible de pivoter autour d'un axe (69), sensiblement perpendiculaire audit tronçon de conducteur de lumière , entre une première position stable dite position d'obturation et une seconde position stable dite position d'éclairement.1. Luminous display device comprising at least one front panel provided with a regular network of openings each of which is associated with a downstream end of a light conductor and with the shutter member controlled by an electromagnet , the upstream end of the light conductors being associated with a light source; characterized in that each opening (12) of the front panel (11) is associated with a rigid body (60) provided with an axial bore (71) in which is engaged a section adjacent to the downstream end of a conductor of light, in that this body (60) carries said electromagnet (61, 62, 63) as well as an opaque cap (66) constituting said shutter member capable of pivoting about an axis (69), substantially perpendicular to said section of light conductor, between a first stable position known as the closed position and a second stable position known as the lighting position.
2. Dispositif selon la revendication 1, caractérisé en ce que la calotte opaque (66) est liée à un aimant permanent bipolaire (63), pivotant autour dudit axe (69) sensiblement perpendiculaire audit tronçon de conducteur de lumière, et en ce que cet aimant (63) est agencé pour pouvoir occuper deux positions stables correspondant respectivement à ladite position d'obturation et ladite position d'éclairement de ladite calotte opaque, ces positions étant fonction du sens d'un champ magnétique alterné engendré par ledit électroaimant.2. Device according to claim 1, characterized in that the opaque cap (66) is linked to a bipolar permanent magnet (63), pivoting around said axis (69) substantially perpendicular to said section of light conductor, and in that this magnet (63) is arranged to be able to occupy two stable positions corresponding respectively to said closed position and said lighting position of said opaque cap, these positions being a function of the direction of an alternating magnetic field generated by said electromagnet.
3. Dispositif selon la revendication 2, caractérisé en ce que l'équipage mobile de l'organe d'obturation comportant la calotte opaque (66) et l'aimant permanent (63) a une inertie inférieure à : 0,1 . 10-9 Kg.m2 3. Device according to claim 2, characterized in that the movable assembly of the shutter member comprising the opaque cap (66) and the permanent magnet (63) has an inertia less than: 0.1. 10-9 Kg.m 2
4. Dispositif selon la revendication 1 , caractérisé en ce que les conducteurs de lumière comportent chacun un tronçon d'extrémité aval (30, 41) orienté vers une ouverture du panneau frontal, dont la section est inférieure à celle du tronçon d'extrémité amont (29, 42), orientée vers la source de lumière (32, 43). 4. Device according to claim 1, characterized in that the light conductors each comprise a downstream end section (30, 41) oriented towards an opening of the front panel, the section of which is smaller than that of the upstream end section (29, 42), oriented towards the light source (32, 43).
5. Dispositif selon la revendication 4, caractérisé en ce qu'au moins les tronçons d'extrémité amont (29, 42) ont une forme sensiblement tronconique, les tronçons d'extrémité aval (30, 41) ayant une forme sensiblement cylindrique.5. Device according to claim 4, characterized in that at least the upstream end sections (29, 42) have a substantially frustoconical shape, the downstream end sections (30, 41) having a substantially cylindrical shape.
6. Dispositif selon la revendication 4, caractérisé en ce que les extrémités amont (29) sont liées à une plaque de base (27) conductrice de lumière, adjacente à la source de lumière (32).6. Device according to claim 4, characterized in that the upstream ends (29) are linked to a light conducting base plate (27), adjacent to the light source (32).
7. Dispositif selon la revendication 6, caractérisé en ce que les conducteurs de lumière sont constitués par des pointes cylindriques, coniques ou tronconiques (28, 28') solidaires d'une plaque de base (27, 27') et dressées sensiblement perpendiculairement par rapport à une surface de cette plaque.7. Device according to claim 6, characterized in that the light conductors are constituted by cylindrical, conical or frustoconical points (28, 28 ') integral with a base plate (27, 27') and erected substantially perpendicularly by compared to a surface of this plate.
8. Dispositif selon la revendication 7, caractérisé en ce que les conducteurs de lumière se composant desdites pointes et de ladite plaque de base sont réalisés en un bloc unitaire moulé en matière synthétique conductrice de la lumière. 8. Device according to claim 7, characterized in that the light conductors consisting of said spikes and said base plate are made of a unitary block molded of light-conducting synthetic material.
EP84904141A 1983-11-23 1984-11-21 Luminous display device Expired EP0165260B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84904141T ATE36086T1 (en) 1983-11-23 1984-11-21 LIGHT DISPLAY ARRANGEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8318776 1983-11-23
FR8318776A FR2555343B1 (en) 1983-11-23 1983-11-23 LIGHT DISPLAY DEVICE

Publications (2)

Publication Number Publication Date
EP0165260A1 true EP0165260A1 (en) 1985-12-27
EP0165260B1 EP0165260B1 (en) 1988-07-27

Family

ID=9294493

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Application Number Title Priority Date Filing Date
EP84904141A Expired EP0165260B1 (en) 1983-11-23 1984-11-21 Luminous display device

Country Status (6)

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EP (1) EP0165260B1 (en)
CA (1) CA1266973A (en)
DE (1) DE3473072D1 (en)
FR (1) FR2555343B1 (en)
IT (1) IT1178257B (en)
WO (1) WO1985002478A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397917B1 (en) * 1989-05-19 1994-06-22 Dambach-Werke GmbH Display for alphanumeric images
US5055832A (en) * 1989-06-09 1991-10-08 Dayco Products Canada Inc. Display element with notched disk
DE4022649C1 (en) * 1990-07-17 1991-10-24 Dambach-Werke Gmbh, 7560 Gaggenau, De
FR2666159B1 (en) * 1990-08-22 1992-12-11 Aerospatiale BISTABLE DEVICE WITHOUT FRICTION FOR SPATIAL USE, IN PARTICULAR FOR THE SEALING OF AN INPUT PORT OF AN OPTICAL SPATIAL INSTRUMENT.
US5793349A (en) * 1992-03-20 1998-08-11 Mark Iv Industries Limited Electromagnetic shutter and cover
US5337077A (en) * 1992-03-20 1994-08-09 Mark Iv Industries Limited Electromagnetic shutter

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Publication number Priority date Publication date Assignee Title
GB1365911A (en) * 1971-04-14 1974-09-04 Universal Telewriters Pty Ltd Information display devices
GB1464001A (en) * 1973-03-07 1977-02-09 Buchert C Data display panels
DE2831174A1 (en) * 1977-07-15 1979-01-18 Kawaguchiko Seimitsu Kk Optical display using fibre optics - has light signals transmitted to bulbs on display table through fibre optic links
FR2517445A1 (en) * 1981-12-01 1983-06-03 World Acrilux Fibre=optic matrix display panel e.g. for road signalling - has array of fibres terminating at respective apertures each selectively blocked by solenoid-activated shutters
DE3148276A1 (en) * 1981-12-05 1983-06-16 Friedrich Merk-Telefonbau GmbH, 8000 München DISPLAY DEVICE
FR2533342B1 (en) * 1982-09-22 1985-07-26 Fibres Optiques Rech Technolo NOVEL MAGNETO-OPTICAL SWITCH, ITS APPLICATION TO ELEMENTARY PARTS OR DISPLAY POINTS AND DISPLAY DEVICES HAVING SUCH OPTICAL DISPLAY POINTS

Non-Patent Citations (1)

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Title
See references of WO8502478A1 *

Also Published As

Publication number Publication date
FR2555343A1 (en) 1985-05-24
IT8449194A0 (en) 1984-11-22
FR2555343B1 (en) 1987-01-23
WO1985002478A1 (en) 1985-06-06
EP0165260B1 (en) 1988-07-27
IT1178257B (en) 1987-09-09
IT8449194A1 (en) 1986-05-22
CA1266973A (en) 1990-03-27
DE3473072D1 (en) 1988-09-01

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