EP0491156B1 - Anzeigevorrichtung - Google Patents

Anzeigevorrichtung Download PDF

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Publication number
EP0491156B1
EP0491156B1 EP91119148A EP91119148A EP0491156B1 EP 0491156 B1 EP0491156 B1 EP 0491156B1 EP 91119148 A EP91119148 A EP 91119148A EP 91119148 A EP91119148 A EP 91119148A EP 0491156 B1 EP0491156 B1 EP 0491156B1
Authority
EP
European Patent Office
Prior art keywords
optical fibre
display
light collector
display device
radiating body
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 - Lifetime
Application number
EP91119148A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0491156A2 (de
EP0491156A3 (en
Inventor
Erich Killinger
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.)
Dambach Werke GmbH
Original Assignee
Dambach Werke GmbH
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 Dambach Werke GmbH filed Critical Dambach Werke GmbH
Publication of EP0491156A2 publication Critical patent/EP0491156A2/de
Publication of EP0491156A3 publication Critical patent/EP0491156A3/de
Application granted granted Critical
Publication of EP0491156B1 publication Critical patent/EP0491156B1/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 invention relates to a display device with a multiplicity of display points formed on a display panel, in which each display point is formed by the end face of an illuminable optical fiber, with a light collector having a cross section which is rounder in cross section and larger than the cross section of the optical fiber, in front of each end of an optical fiber is fixed, which faces the end of the optical fiber forms a section convexly curved with a predetermined radius.
  • the illuminated display areas of the display points are small because the optical fibers have a diameter of 0.5 to 1 mm.
  • the ends of the optical fibers have also already been connected to radiation bodies which enlarge the display areas to approximately 5 mm.
  • the display points In order to be able to use such display points to display large-area displays that can be easily recognized even at greater distances, the display points must be arranged at a small distance from one another. However, this leads to a very large number of display points. If various displays are also to be displayed with the display device, switchable display points are used, which must be set in succession by a controller. The effort for a large-scale display is also very large in the area of the control.
  • a display device of the type mentioned at the outset is disclosed in EP 0 348 619 A1.
  • light collectors in the form of convex lenses are placed in front of the front (light exit) ends of the optical fibers and have a flat surface on their convex outside facing away from the optical fiber, the size of which should be matched to the intended light exit angle.
  • the lens is inserted in the light exit-side plane of a screw sleeve, which in turn protrudes relatively far beyond the outside of the display panel.
  • the light collector is turned away from the end of the optical fiber is provided with a circumferential chamfer, which is at a predetermined angle to the central axis of the display point, and that the light collector is held in a bore in the display panel by a fit and / or interference fit and only with the portion formed by the chamfer at the front of the display panel and with protrudes from the convex portion at the rear of the display panel.
  • the end of the light collector facing away from the end of the optical fiber is roughened.
  • the radiation angle of the display point is increased, so that the distances between the display points are increased and the number of display points per unit area can be greatly reduced.
  • This configuration of the display device is particularly advantageous for large-area displays that are viewed from a greater distance.
  • the measure that the convexly curved section of the light collector protrudes on the rear side of the display panel facing the end of the optical fiber also makes the light entry into the light collector optimal.
  • the roughened end face of the light collector ensures that this area of the light collector is also uniformly illuminated, although the radiation area of the optical fiber is smaller. This is due to the scatter that occurs on the roughened face.
  • the radiation angle of the display point can be determined so that, depending on the display size and viewing distance, optimal conditions can be achieved with a greatly reduced number of display points.
  • a further advantageous embodiment provides that the end of the optical fiber is connected to a radiation body, the diameter of which is larger than the diameter of the optical fiber, but smaller than the diameter of the light collector, and that the central longitudinal axis of the radiation body is aligned with the central longitudinal axis of the light collector. In this way, the radiation area at the end of the optical fiber is increased.
  • the display device can also be used for differently adjustable displays, it is provided according to a further embodiment that the display panel is arranged at a distance from the end of the optical fibers or radiating bodies and that switching means are arranged between the ends of the optical fibers or the radiating bodies and the light collectors, with which the optical connections between these parts can be blocked and released.
  • the display device for variable displays is designed such that a housing with one compartment per optical fiber or radiating body is provided, that the optical fiber or the radiating body is fixed in an opening in the bottom of the associated compartment and protrudes outside the axis of rotation of a flap mounted in the region of the open side of the compartment into the compartment, that the optical fiber or the radiating body limits the rotary movement of the flap to approximately 90 ° that the flap covers the associated compartment in one position and the optical connection from the optical fiber or the radiating body to the light collector is released in the other position and that the flap can be adjusted into one or another position by means of assigned, pulse-controlled electromagnets, the positions are retained by means of the remanence of the electromagnets.
  • the radiating body has a diameter of 5 mm
  • the display device comprises a housing 10 for rotatably mounting flaps 15, as shown in FIG. 1.
  • This housing 10 consists essentially of a plate which has compartments 11 which are square in cross section to the display side and whose walls are integrally formed on the plate.
  • This housing 10 can also be composed of a plurality of sub-housings lined up in a row in order to obtain a matrix-shaped display device of sufficient size.
  • the compartments 11 are arranged in rows and columns.
  • a flap 15 is rotatably mounted with the axis of rotation 14 in such a way that this flap 15 covers the associated compartment 11 in the initial position shown in FIG. 1, which corresponds to the non-display position.
  • a bore 12 is made in the bottom of the compartment 11, which receives the radiation body 30 attached to the end of the optical fiber 31.
  • the bore 12 is designed so that the radiating body 30 is held therein by a press fit and / or a snug fit and protrudes into the associated compartment 11.
  • the arrangement is such that the radiating body 30 lies outside the axis of rotation 14 of the flap 15, which preferably runs diagonally in the compartment 11 and is arranged in the region of the open side of the compartment 11. Behind the compartment 11 on the outside of the floor, ie the plate, the electromagnet pairs 13 attached to the flap 15 are attached, with which the two positions of the flap 15 are adjusted. In the display position according to FIG.
  • the flap 15 cannot rotate through 180 °, since the radiating body 30 forms a stop for the flap 15, so that it can only rotate through approximately 90 ° and the light emerging from the radiating body 30 releases and can reach a light collector 22 which is fixed in front of the radiating body 30 in a display panel 20.
  • the distance of the display panel 20 is chosen so that the Flaps 15 in the display position of FIG. 1 can adjust.
  • the light collectors 22 are round in cross section and are designed as sections of a glass or a transparent plastic rod.
  • the cross section of the light collectors 22 is larger than the cross section of the radiation bodies 30.
  • the longitudinal central axes of the light collectors 22 are aligned with the longitudinal central axes of the associated radiation bodies 30.
  • the display panel 20 has holes 21 for the light collectors 22, which are held therein by a snug fit and / or an interference fit.
  • the light collector 22 is facing the radiation body 30 and is provided with the section 23 which is convexly curved with a radius r.
  • the light collector 22 protrudes from the display panel 20 with a section provided with a phase 24.
  • This phase 24 is at an angle to the longitudinal central axis of the light collector 22.
  • the radius r and the angle ⁇ are the quantities with which a desired beam angle can be achieved.
  • the end face 25 of the light collector 22 facing away from the radiation body 30 is roughened so that it is illuminated uniformly. This is achieved despite the smaller radiation area of the radiation body 30 with the aid of the scattered light.
  • the display point With increasing distance from the display panel 20, the display point becomes even larger due to the increased radiation angle, so that the adjacent display points of the display device can be set in the display panel 20 at a correspondingly increased distance.
  • a 5x7 matrix of display points can be used to represent numbers and letters that are easily recognizable even at a distance of 10 to 20 meters at a height of approx. 50 cm are.
  • a beam angle of 7 ° has been achieved with the following designs:
  • the electromagnets 13 have a remanence, so that the respectively set position of the flaps 15 is maintained until the other position is actuated.
  • Each compartment 11, i.e. each flap 15 is therefore associated with a pair of electromagnets 13.
  • the one electromagnet 13 of the pairs is used for setting and maintaining the display position according to FIG. 1, while when the other electromagnets 13 of the pairs are energized, the flaps 15 are brought into the starting position according to FIG. 2 and held therein. In the starting position, i.e. the non-display position, the flaps 15 close the associated compartments 11, one side wall of the compartment 11 serving as a stop.
  • the illuminated optical fiber 31 with the radiation body 30 is covered so that no light can reach the associated upstream light collector 22.
  • the display device can be constructed in matrix form, the flaps 15 with the electromagnets 13 in rows and columns are arranged.
  • the wiring can take over a printed circuit board on which the housing 10 with the electromagnetic connections can be plugged on and soldered.
  • the setting coils of the electromagnetic pairs 13 form the setting matrix, while the reset coils of the electromagnetic pairs 13 form the reset matrix.

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)
  • Control Of El Displays (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Vehicle Body Suspensions (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
EP91119148A 1990-12-19 1991-11-11 Anzeigevorrichtung Expired - Lifetime EP0491156B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4040567 1990-12-19
DE4040567A DE4040567C1 (enrdf_load_stackoverflow) 1990-12-19 1990-12-19

Publications (3)

Publication Number Publication Date
EP0491156A2 EP0491156A2 (de) 1992-06-24
EP0491156A3 EP0491156A3 (en) 1992-08-05
EP0491156B1 true EP0491156B1 (de) 1995-08-23

Family

ID=6420671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119148A Expired - Lifetime EP0491156B1 (de) 1990-12-19 1991-11-11 Anzeigevorrichtung

Country Status (4)

Country Link
EP (1) EP0491156B1 (enrdf_load_stackoverflow)
AT (1) ATE126915T1 (enrdf_load_stackoverflow)
CA (1) CA2057949C (enrdf_load_stackoverflow)
DE (2) DE4040567C1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793349A (en) * 1992-03-20 1998-08-11 Mark Iv Industries Limited Electromagnetic shutter and cover
NL9301884A (nl) * 1993-11-02 1995-06-01 Nederland Haarlem B V Lichtschakelaar, alsmede informatiedrager.
DE19824425A1 (de) * 1998-05-30 1999-12-09 Dambach Werke Gmbh Leuchtanzeigevorrichtung für den Straßenverkehr
DE19824499A1 (de) * 1998-06-02 1999-12-09 Dambach Werke Gmbh Leuchtanzeigevorrichtung
DE20121725U1 (de) * 2001-08-17 2003-04-03 Dambach-Werke Gmbh, 76456 Kuppenheim Leuchtanzeigevorrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2172568A5 (enrdf_load_stackoverflow) * 1972-02-18 1973-09-28 Rank Organisation Ltd
DE8124380U1 (de) * 1981-08-20 1983-03-24 Siemens AG, 1000 Berlin und 8000 München Wechselanzeigeeinrichtung, insbesondere fuer verkehrssignalanzeigen
DE3319179A1 (de) * 1983-05-21 1985-01-24 Joachim Dipl.-Phys. 5020 Frechen Schick Lichtleitersystem fuer z.b. kraftfahrzeugrueckleuchtgruppen
DE3511839A1 (de) * 1985-03-30 1986-10-02 Braun Ag, 6000 Frankfurt Lichtleiter zum beleuchten von geraeteanzeigen
DE3822105A1 (de) * 1988-06-30 1990-01-11 Schoelly Fiberoptic Gmbh Wechselzeichen
DE3910678A1 (de) * 1989-04-03 1990-10-04 Philipp Struth Einzelmatrix in punktcharakter, die im zusammenwirken von permanent leuchtenden lichtquellen mittels elektromagnetischer bauteile raeumliche konturen, alpha-numerische zeichen und grafik darstellt
DE8913499U1 (de) * 1989-05-19 1990-02-08 Dambach-Werke Gmbh, 7560 Gaggenau Anzeigevorrichtung für alpha-numerische Anzeigen

Also Published As

Publication number Publication date
CA2057949C (en) 1999-01-05
EP0491156A2 (de) 1992-06-24
DE59106313D1 (de) 1995-09-28
EP0491156A3 (en) 1992-08-05
DE4040567C1 (enrdf_load_stackoverflow) 1992-06-17
CA2057949A1 (en) 1992-06-20
ATE126915T1 (de) 1995-09-15

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