EP0210913A1 - Anzeigezelle für eine Auszugstafel bestehend aus einer Punktmatrix - Google Patents

Anzeigezelle für eine Auszugstafel bestehend aus einer Punktmatrix Download PDF

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Publication number
EP0210913A1
EP0210913A1 EP86401583A EP86401583A EP0210913A1 EP 0210913 A1 EP0210913 A1 EP 0210913A1 EP 86401583 A EP86401583 A EP 86401583A EP 86401583 A EP86401583 A EP 86401583A EP 0210913 A1 EP0210913 A1 EP 0210913A1
Authority
EP
European Patent Office
Prior art keywords
plate
display cell
optical fiber
cell according
elementary display
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
EP86401583A
Other languages
English (en)
French (fr)
Other versions
EP0210913B1 (de
Inventor
Jacques Le Gars
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.)
D'etudes Pour Le Developpement Des Productions Electroniques SA Ste
Original Assignee
D'etudes Pour Le Developpement Des Productions Electroniques SA Ste
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 D'etudes Pour Le Developpement Des Productions Electroniques SA Ste filed Critical D'etudes Pour Le Developpement Des Productions Electroniques SA Ste
Priority to AT86401583T priority Critical patent/ATE68282T1/de
Publication of EP0210913A1 publication Critical patent/EP0210913A1/de
Application granted granted Critical
Publication of EP0210913B1 publication Critical patent/EP0210913B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 present invention relates to dot matrix display panels, that is to say display panels in which each sign or character is represented by means of a dot matrix each consisting of a display cell , each matrix being controlled by a generally electronic device so as to display the desired sign or character by activating a certain number of cells of the matrix.
  • These matrices are for example of the type with seven rows and five columns.
  • the invention relates more particularly to display panels which must be visible from a very great distance so as to attract the attention of the public who will read the indications carried by the panel when it approaches it.
  • This is the case in particular of the signs placed on automobile traffic lanes such as motorways; indeed, it is necessary to send messages concerning security and the panels carrying these security messages must be able to be perceived at a long distance even if they are not read immediately by the user, taking into account the speed to which the vehicles circulate.
  • it is necessary that the attention of the motorist is drawn while the panel is still at a great distance so as to avoid, for example, pile-ups in chains.
  • each elementary cell is constituted by a plate having a reflecting face and a black face, said plate being pivotally mounted between an active position where it has its reflecting face and a rest position where it presents its black face; all the matrices of this panel display is illuminated by a light source such as a neon lamp.
  • a light source such as a neon lamp.
  • Display matrices are also known in which each cell is constituted by the end of an optical fiber, the other end of which receives light from a light source, a concealment device being able to be placed in front of the end of fiber optic output.
  • a display panel of this type which is described in French patent application 2,535,882 has a very strong visual impact, even under very unfavorable conditions such as fog, so that it can be perceived from a long distance.
  • the beam emitted by each optical fiber has a very closed solid angle, for example 12 ° at half power, so that this beam can only be perceived at a great distance, taking into account the fact that the panel is arranged at a significant height and the motorist quickly reaches below the area scanned by the optical fiber beams, so that he cannot read or decipher the message carried by the panel.
  • the present invention therefore proposes to produce an elementary display cell of the type mentioned in the introduction which has a significant light impact while keeping a very open viewing angle.
  • the elementary display cell according to the invention is notably remarkable in that the end of a light-transmitting optical fiber is disposed behind said plate with a reflective face and with a black face and in that said plate has a hole placed opposite the end of said optical fiber when it is in the active position . Therefore, in the "on" position, the beam emitted by the optical fiber crosses the plate through the aforementioned hole so that the display point thus formed has a strong visual impact which makes it possible to attract the attention of a user when he is at long distance; moreover, the passage of the beam in the plate being in the active position reinforces the reflection effect of the latter. When the cell is in the rest position, the plate rocks to present its black face and obscures the beam emitted by the optical fiber so that no light is emitted by said cell.
  • said plate is constituted by a round patch pivoting about a diametrical axis.
  • the end of the optical fiber is fixed to the printed circuit for controlling the matrix of cells, said optical fiber passing through said printed circuit perpendicularly to the latter.
  • the end of the optical fiber is fixed to the printed circuit for controlling the matrix of cells, said optical fiber passing through said printed circuit perpendicularly to the latter.
  • optical fibers of the cells of the same display panel are lit by a common intense light source; advantageously, this light source is constituted by the light source illuminating the plates when they are in active position.
  • this light source is constituted by the light source illuminating the plates when they are in active position.
  • FIGS. 1 and 2 show a basic display cell which is part of a matrix, for example of the 7 ⁇ 5 type; all of the cells of each matrix are carried by a printed support circuit 1 which serves both as a support for each of the cells and which also constitutes the electronic circuit for controlling the matrix.
  • Each elementary cell is essentially constituted by a plate 2 comprising a reflecting face 3 and a black face 4; this plate which is for example constituted by a round pellet rotating around a horizontal diametral axis 5 is controlled by an electro-mechanical device such as an electromagnet so as to be able to take two stable positions, a first active position shown in FIG. 1 in which the reflecting face 3 is directed towards the outside facing the user and a rest position shown in FIG. 2 in which the plate 2 has pivoted by an angle at least equal to 90 ° so as to present its face black 4 outwards.
  • an electro-mechanical device such as an electromagnet
  • an optical fiber 6 supplied at one of its ends by a powerful light source has its other outlet end 7 disposed behind the plate 2 which has a hole 8 disposed opposite the end 7 of the fiber 6 when the plate 3 is in the active position shown in FIG. 1.
  • the diameter of this hole is at least determined to allow the beam 9 emitted by the end 7 of the optical fiber 6 to pass entirely, beam whose solid angle is for example 12 °.
  • the end 7 of the optical fiber 6 crosses the support printed circuit 1 perpendicularly to the latter and is fixed to said printed circuit 1.
  • the end 7 of the optical fiber 6 being located very close to the printed circuit 1, we obtain precise positioning of the end 7 and, consequently, of the beam 9 that it emits.
  • FIG. 3 represents another embodiment of the invention in which the end 7 of the optical fiber 6 is brought in the vicinity of the pivoting plate 2 and it is provided with a lens 11.
  • this lens 11 is supported by a sleeve 12 engaging on the end of the optical fiber 6. Thanks to this arrangement, the hole 13 arranged in the plate 2 is of much smaller dimensions and this limits the loss of reflective surface 3 due to the use of optical fiber. Furthermore, this improves the functioning of the elementary cell, in particular when the sun is facing.
  • the semi-reflecting plate 2 can no longer tilt completely as in the example of claim 1 since the optical fiber comes in the vicinity of said plate when it is in the reflecting position and the end 7 of the optical fiber with the sleeve 12 opposes the rotation of the semi-reflecting plate 2. In this non-operating position which is shown in broken lines in FIG. 3, the semi-reflecting plate 2 does not obscure the beam of the optical fiber 6.
  • C ' is why there is provided on the black face 4 of the semi-reflecting patch 2 a sealing element which is constituted for example by a flat element fixed perpendicularly on the black face 4.
  • this element 14 is interposed on the path of the light beam coming from the optical fiber 6.
  • the face 15 of this shutter element 14 which is directed outwards in the position of non-use is non-reflective.
  • This sealing element can be for example a sheet of synthetic material such as that known under the trade name of MYLAR, which makes it possible to produce this sealing element very easily and at low cost.
  • optical fibers can be placed side by side, in each elementary cell.
  • a hole of larger dimensions is provided in the plate 2, for example an elongated hole as shown at 16 in FIG. 4.
  • all the optical fibers of the display cells constituting a display panel are supplied by a common light source of high power; the upstream ends of the set of optical fibers 6 can be brought in front of the light source used to illuminate the reflecting plates 2.
  • the modifications to be made to a conventional display panel with pivoting plates are limited to the installation opitic fibers 6.
  • the optical fibers can be supplied with a yellow or red light source for example; it is also possible to provide the holes 8, 13 and 16 with a colored translucent wall.
  • the invention makes it possible to obtain a particularly reliable display panel since it is based on the technology of display panels with pivoting reflecting plates whose reliability is very high; the addition of optical fibers to such display panels does not cause any modification to the operation of these panels, the reliability of which is preserved.
  • the integration of optical fibers makes it possible to greatly increase the aggressiveness of such display panels.
  • shutter elements makes it possible to improve the operation without severely reducing the cost price, which is particularly interesting for semi-reflective pads of large dimensions.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
EP86401583A 1985-07-22 1986-07-16 Anzeigezelle für eine Auszugstafel bestehend aus einer Punktmatrix Expired - Lifetime EP0210913B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401583T ATE68282T1 (de) 1985-07-22 1986-07-16 Anzeigezelle fuer eine auszugstafel bestehend aus einer punktmatrix.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8511176A FR2585164B1 (fr) 1985-07-22 1985-07-22 Cellule elementaire d'affichage pour panneau d'affichage a matrice de points
FR8511176 1985-07-22

Publications (2)

Publication Number Publication Date
EP0210913A1 true EP0210913A1 (de) 1987-02-04
EP0210913B1 EP0210913B1 (de) 1991-10-09

Family

ID=9321513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401583A Expired - Lifetime EP0210913B1 (de) 1985-07-22 1986-07-16 Anzeigezelle für eine Auszugstafel bestehend aus einer Punktmatrix

Country Status (8)

Country Link
US (1) US4833806A (de)
EP (1) EP0210913B1 (de)
AT (1) ATE68282T1 (de)
CA (1) CA1260265A (de)
DE (2) DE210913T1 (de)
ES (1) ES2000546A6 (de)
FR (1) FR2585164B1 (de)
PT (1) PT83034B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349109A1 (de) * 1988-06-29 1990-01-03 Mark IV Industries Limited Anzeigevorrichtung
EP0401980A2 (de) * 1989-06-09 1990-12-12 Mark IV Industries Limited Anzeigeelement

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4974353A (en) * 1989-08-28 1990-12-04 The Staver Company Matrix display assembly having multiple point lighting
US5022171A (en) * 1989-08-28 1991-06-11 The Staver Company Inc. Matrix display assembly having multiple point lighting
US5050325A (en) * 1990-05-14 1991-09-24 Dayco Products Canada, Inc. Display indicator and reed switch
US5351065A (en) * 1990-07-17 1994-09-27 Dambach-Werke Gmbh Indicator device
US5337077A (en) * 1992-03-20 1994-08-09 Mark Iv Industries Limited Electromagnetic shutter
US5793349A (en) * 1992-03-20 1998-08-11 Mark Iv Industries Limited Electromagnetic shutter and cover
DE4212125C1 (de) * 1992-04-13 1993-04-01 Dambach-Werke Gmbh, 7554 Kuppenheim, De
US5790088A (en) * 1995-12-04 1998-08-04 American Electronic Sign Company Electronic display element for electronic display device
US5898418A (en) * 1995-03-06 1999-04-27 Kao; Pin-Chi Magnetically operated display
US6677922B1 (en) 1995-12-04 2004-01-13 3M Innovative Properties Company Display element having retroreflective surface
ATE192257T1 (de) * 1996-03-05 2000-05-15 Mark Iv Ind Ltd Anzeigevorrichtung und-anordnung
US5970199A (en) * 1996-12-11 1999-10-19 Act Communications, Inc. Frame for supporting fiber optic cable splices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975728A (en) * 1975-03-28 1976-08-17 Ferranti-Packard Limited Electromagnetic displays with resiliently mounted components
FR2466819A1 (fr) * 1979-10-05 1981-04-10 Pariente Elie Dispositif d'affichage a fibres optiques
EP0054336A1 (de) * 1980-12-11 1982-06-23 American Sign & Indicator Corporation Matrixanzeigetafel
FR2517445A1 (fr) * 1981-12-01 1983-06-03 World Acrilux Dispositif d'affichage a fibres optiques
FR2533342A1 (fr) * 1982-09-22 1984-03-23 Fibres Optiques Rech Technolo Nouvel interrupteur magneto-optique, son application aux parties elementaires ou points d'affichage et dispositifs d'affichage comportant de tels points d'affichage optique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535882B1 (fr) * 1982-11-05 1987-08-28 Securite Signalisation Matrice d'affichage a fibres lumineuses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975728A (en) * 1975-03-28 1976-08-17 Ferranti-Packard Limited Electromagnetic displays with resiliently mounted components
FR2466819A1 (fr) * 1979-10-05 1981-04-10 Pariente Elie Dispositif d'affichage a fibres optiques
EP0054336A1 (de) * 1980-12-11 1982-06-23 American Sign & Indicator Corporation Matrixanzeigetafel
FR2517445A1 (fr) * 1981-12-01 1983-06-03 World Acrilux Dispositif d'affichage a fibres optiques
FR2533342A1 (fr) * 1982-09-22 1984-03-23 Fibres Optiques Rech Technolo Nouvel interrupteur magneto-optique, son application aux parties elementaires ou points d'affichage et dispositifs d'affichage comportant de tels points d'affichage optique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349109A1 (de) * 1988-06-29 1990-01-03 Mark IV Industries Limited Anzeigevorrichtung
EP0401980A2 (de) * 1989-06-09 1990-12-12 Mark IV Industries Limited Anzeigeelement
EP0401980A3 (de) * 1989-06-09 1992-03-11 Mark IV Industries Limited Anzeigeelement
USRE35357E (en) * 1989-06-09 1996-10-22 Mark Iv Industries, Ltd. Display element with notched disk

Also Published As

Publication number Publication date
FR2585164B1 (fr) 1988-04-22
DE210913T1 (de) 1987-05-21
US4833806A (en) 1989-05-30
PT83034B (pt) 1990-07-31
ATE68282T1 (de) 1991-10-15
DE3681849D1 (de) 1991-11-14
FR2585164A1 (fr) 1987-01-23
ES2000546A6 (es) 1988-03-01
CA1260265A (en) 1989-09-26
EP0210913B1 (de) 1991-10-09
PT83034A (fr) 1986-08-01

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