EP0109328B1 - Anzeigematrix mit Lichtfasern - Google Patents

Anzeigematrix mit Lichtfasern Download PDF

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Publication number
EP0109328B1
EP0109328B1 EP83402115A EP83402115A EP0109328B1 EP 0109328 B1 EP0109328 B1 EP 0109328B1 EP 83402115 A EP83402115 A EP 83402115A EP 83402115 A EP83402115 A EP 83402115A EP 0109328 B1 EP0109328 B1 EP 0109328B1
Authority
EP
European Patent Office
Prior art keywords
poles
occulting
rotor
disc
fibers
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.)
Expired
Application number
EP83402115A
Other languages
English (en)
French (fr)
Other versions
EP0109328A1 (de
Inventor
Michel Batt
Richard Costa
Roland Gassmann
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.)
Securite et Signalisation SAS
Original Assignee
Securite et Signalisation SAS
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 Securite et Signalisation SAS filed Critical Securite et Signalisation SAS
Priority to AT83402115T priority Critical patent/ATE31834T1/de
Publication of EP0109328A1 publication Critical patent/EP0109328A1/de
Application granted granted Critical
Publication of EP0109328B1 publication Critical patent/EP0109328B1/de
Expired legal-status Critical Current

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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
    • G09F9/305—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 invention relates to a display matrix formed by the downstream ends of a set of optical fibers, the upstream ends of which are arranged to receive light from a light source.
  • Document DE-A-2 83.1 174 discloses a matrix of the aforementioned type at the top of this document, in which the optical fibers are associated individually or in very small sets with screening devices arranged on the front of the end downstream of the fibers concerned and capable of modifying the color and / or the intensity of the light emitted towards the front of the matrix, control devices for the screening devices making it possible to selectively control the screening of specific groups of fibers so as to transform the display at will.
  • the concealment devices can be of the optoelectric type (liquid crystals, etc.): this is not satisfactory for applications in the field of display on roads or motorways, on the one hand because of the very disturbed operation of the devices of this kind at very low temperatures in the winter season or too high when exposed to the sun, and on the other hand, due to the fact that they never completely obscure the light, hence a definition imperfect messages.
  • the occultation devices of the mentioned document can also be of the electromechanical type: they are screens pushed in translation by jacks, or alternatively tilting valves controlled by electromagnets.
  • the lateral dimensions are relatively large and do not allow very close fibers to be fitted downstream.
  • the slightest power cut causes the collapse of all the valves, that is to say the annihilation of the message.
  • the system is noisy.
  • concealment or absence of concealment It does not allow the realization on a same matrix of variable messages with several colors (which is necessary for the representation of certain road signs).
  • the object of the invention is to provide a matrix with light fibers, allowing the display of a practically unlimited number of messages, with electromechanical masking devices, not having the drawbacks of the known matrix, and which can operate very quickly.
  • each concealment device comprises a disc comprising different concealment sectors capable of interposing on the path of the light, as a function of a rotation controlled by the control, each disc being driven in rotation by a rotary motor with two stable equilibrium positions, the rotation of which is controlled by pulses and in that the motor comprises a rotor rotating freely on an axis and consisting of a small permanent magnet to two poles oriented radially with respect to the axis, a stator formed by a circuit magnetizable by pulse in a material with good remanence, having two poles diametrically opposite with respect to the axis of the rotor, the stator comprising near each of its poles an indexing element not aligned with said poles of the stator intended to destabilize the position of the rotor at the time of a pulse.
  • the blackout areas can consist of free openings, color filters, or solid parts.
  • a reduction gear is provided between the disc and the axis of the motor so as to transform the rotation of a half-turn of the axis of the motor into a desired angle rotation of the disc to pass from one sector to the neighboring sector.
  • FIG. 1 represents a display panel element 1 in the form of a matrix of 7 ⁇ 5 cells, with a height of 105 mm and a width of 75 mm.
  • a complete display panel includes several elements 1.
  • each cell ends the downstream end 2 of a light conductor 3 made of optical fibers, fixed by a conventional end piece 4 in the support face 5 of the panel element.
  • a concealment disc 6 can rotate on an axis 7 parallel to the axis of the end piece 4.
  • On this disc are arranged one or more openings 8, 9, 10, centered on a circumference passing through the axis of the tip of the light conductor during the rotation of the disc.
  • the light passes and the light point is visible.
  • the openings can be fitted with colored filters according to the desired result (openings 9, 10 fig. 3), or free (openings 8, figure 4).
  • the light point becomes invisible.
  • a protective plate 11, pierced with holes 12 in the axis of the end pieces 4 of the conductors 3, can be placed at the front of the support face 5 and of the discs 6.
  • the ends of a very small set of optical fibers for example three or four, coming from one or more light sources which may or may not be lit, associated with the same occultation disc whose rotation and openings are calculated according to the arrangement of said ends and the desired ends.
  • Providing several fibers for a disc makes it possible to increase the brightness of the message by increasing the number of light ends functioning as the same “point” of the message, and / or to increase security in the event of a lamp failure, and / or to provide colored fibers upstream of the fibers and thus to increase the possibilities of changing the color of the message displayed.
  • the axis of the occultation disc is mounted on the rotor of a motor 13 for angular positioning of the disc, capable of carrying out the orders of a control logic.
  • This motor can be in different forms depending on the application for which the screen is intended.
  • it may consist of a permanent magnet secured to the axis and placed in the air gap of an electromagnet.
  • the motor must be designed to take up minimal space.
  • a preferred embodiment in the case of a single free opening disc 8 taking two positions: one coinciding with the axis of the nozzle 4 (shown in solid lines in Figure 4), l 'other, opposite the first, for the occlusion (in dotted lines in Figure 4).
  • the rotor of the motor 13 is constituted by a small magnet 14 with a high coercive field, magnetized with two poles arranged radially with respect to the axis.
  • the complete rotor fitted therefore consists of an axis carrying on the one hand the blackout disc, and on the other hand the rotating magnet 14.
  • This magnet can be constituted, in practice, by a small cylinder of diametrically magnetized plastoferrite.
  • the stator consists of a magnetic circuit 15 made of a material with good remanence but a low coercive field. It can have the shape that one wishes as long as its two poles 16, 17 are presented diametrically relative to the axis of the rotor, at the level of the magnet 14.
  • It can be in one or more pieces, round section or other etc.
  • the short current pulses (typically less than 1 ms) sent by the control unit in one direction or the other in the coil have the effect of stably magnetizing the stator, thanks to its remanence.
  • the rotor therefore tends to be positioned so that its N and S poles correspond respectively to the S and N poles of the stator 15.
  • the stable equilibrium position of the rotor is 180 ° from the previous one (% revolution).
  • a new pulse of a current of the same direction does not modify anything.
  • a new pulse of a reverse current again turns the rotor 180 ° in the same direction.
  • the equilibrium position is at the point of minimum reluctance, and the pulse as before.
  • the control logic is of a conventional type and does not need to be described.
  • the invention makes it possible to obtain a matrix operating in a wide range of temperatures (for example from -30 ° C to + 110 ° C), requiring only short pulses (energy savings) to operate in addition to l light energy, making it possible to write a wide variety of messages (both written messages, such as "ACCIDENT AT 800 M", as well as pictograms, such as traffic signs).

Landscapes

  • 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)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Lubricants (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Traffic Control Systems (AREA)

Claims (3)

1. Anzeigetafel (1), die durch die lichtentfernten Enden (2) einer Gesamtheit von optischen Fasern (3) gebildet wird, deren lichtnahe Enden so angeordnet sind, dass sie Licht einer Lichtquelle empfangen, von der Art, bei der die optischen Fasern (3) einzeln oder in kleinen Gruppen elektromagnetischen Blendeneinrichtungen (6) zugeordnet sind, die vor den lichtabgewandten Enden (2) der betreffenden Fasern (3) angeordnet sind und die in der Lage sind, die Farbe und/oder Intensität des von der Anzeigetafel ausgehenden Lichtes zu ändern und mit Regeleinrichtungen (13) für die Blendeneinrichtungen (6), die es erlauben, vorgegebene Gruppen von Fasern abzublenden, um frei gewählt die Anzeige zu verändern, dadurch gekennzeichnet, dass jede Blendeneinrichtung eine Scheibe (6) aufweist, die verschiedene Abblendsektoren (8, 9, 10) trägt, die in Abhängigkeit von der Verdrehung, die durch die Regeleinrichtung (13) bewirkt wird, in den Lichtweg geschoben werden können, wobei jede Scheibe durch einen Drehmotor mit zwei stabilen Gleichgewichtslagen in Drehung versetz wird, wobei die Verdrehung durch Impulse ausgelöst wird und wobei der Motor einen frei auf einer Achse (7) drehbaren Rotor (14) aufweist und aus einem kleinen permanentmagneten mit zwei bezüglich der Achse (7) radial orientierten Polen besteht, mit einem Stator (15) aus einem durch Impulse magnetisierbaren Leiter aus einem Material mit guter Remanenz, der zwei Pole (16, 17; 16', 17'), die bezüglich der Achse (7) des Rotors diametral gegenüberliegen aufweist, wobei der Stator nahe eines jeden seiner Pole ein Zeigerelement (18, 19; 18', 19') aufweist, welches mit den genannten Polen des Stators nicht fluchtend angeordnet ist, dazu dienend, die Lage des Rotors im Moment eines Impulses zu destabilisieren.
2. Anzeigetafel nach Anspruch 1, dadurch gekennzeichnet, dass jede Scheibe (6) einer sehr kleinen Anzahl von Fasern, die zur selben Lichtquelle oder zu verschiedenen Lichtquellen führen, zugeordnet ist.
3. Anzeigetafel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Scheibe mit dem Motor durch ein Reduktionsgetriebe verbunden ist.
EP83402115A 1982-11-05 1983-10-28 Anzeigematrix mit Lichtfasern Expired EP0109328B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402115T ATE31834T1 (de) 1982-11-05 1983-10-28 Anzeigematrix mit lichtfasern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8218625A FR2535882B1 (fr) 1982-11-05 1982-11-05 Matrice d'affichage a fibres lumineuses
FR8218625 1982-11-05

Publications (2)

Publication Number Publication Date
EP0109328A1 EP0109328A1 (de) 1984-05-23
EP0109328B1 true EP0109328B1 (de) 1988-01-07

Family

ID=9278953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402115A Expired EP0109328B1 (de) 1982-11-05 1983-10-28 Anzeigematrix mit Lichtfasern

Country Status (5)

Country Link
EP (1) EP0109328B1 (de)
AT (1) ATE31834T1 (de)
DE (1) DE3375241D1 (de)
DK (1) DK163614C (de)
FR (1) FR2535882B1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585164B1 (fr) * 1985-07-22 1988-04-22 Soc Et Dev Prod Electron Cellule elementaire d'affichage pour panneau d'affichage a matrice de points
FR2634933B1 (fr) * 1988-07-29 1990-10-12 Soc Et Dev Prod Electron Dispositif d'affichage, notamment pour panneau d'affichage a structure matricielle
ATE107787T1 (de) * 1989-05-19 1994-07-15 Dambach Werke Gmbh Anzeigevorrichtung für alphanumerische anzeigen.
US5055832A (en) * 1989-06-09 1991-10-08 Dayco Products Canada Inc. Display element with notched disk
US5022171A (en) * 1989-08-28 1991-06-11 The Staver Company Inc. Matrix display assembly having multiple point lighting
US4974353A (en) * 1989-08-28 1990-12-04 The Staver Company Matrix display assembly having multiple point lighting
DE4022649C1 (de) * 1990-07-17 1991-10-24 Dambach-Werke Gmbh, 7560 Gaggenau, De
FR2688088B1 (fr) * 1992-02-27 1994-06-03 Securite Signalisation Dispositif d'affichage.
US5793349A (en) * 1992-03-20 1998-08-11 Mark Iv Industries Limited Electromagnetic shutter and cover
FR2718555B1 (fr) * 1994-04-07 1996-06-28 Ses Inc Matrice d'affichage à fibres lumineuses oscultables par des disques à plusieurs secteurs.
DE4437675C2 (de) * 1994-10-21 1998-12-03 Dambach Werke Gmbh Leuchtanzeigevorrichtung für den Straßenverkehr
CN112269326B (zh) * 2020-06-12 2022-10-04 洪海光电集团有限公司 基于视频亮度信号的采集控制装置及视频特征采集的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578973A (en) * 1969-03-06 1971-05-18 American Atomics Corp Self-luminous light sources employing fiber optics
US3909823A (en) * 1974-03-26 1975-09-30 Keith L Knowlton An optical fiber variable display system utilizing a single light source
US3889196A (en) * 1974-03-29 1975-06-10 Gen Instrument Corp VHF and UHF fiber optic channel indicia display having a common display area
DE2831174A1 (de) * 1977-07-15 1979-01-18 Kawaguchiko Seimitsu Kk Leuchtanzeige-vorrichtung
GB2028561A (en) * 1978-07-19 1980-03-05 Murakami T Optical fibre illuminating device employing optical fibres

Also Published As

Publication number Publication date
ATE31834T1 (de) 1988-01-15
DK163614B (da) 1992-03-16
DK506383D0 (da) 1983-11-04
DK163614C (da) 1992-08-24
FR2535882A1 (fr) 1984-05-11
DK506383A (da) 1984-05-06
EP0109328A1 (de) 1984-05-23
FR2535882B1 (fr) 1987-08-28
DE3375241D1 (en) 1988-02-11

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