EP1171860B1 - Dispositif d'affichage electromagnetique - Google Patents

Dispositif d'affichage electromagnetique Download PDF

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Publication number
EP1171860B1
EP1171860B1 EP99927654A EP99927654A EP1171860B1 EP 1171860 B1 EP1171860 B1 EP 1171860B1 EP 99927654 A EP99927654 A EP 99927654A EP 99927654 A EP99927654 A EP 99927654A EP 1171860 B1 EP1171860 B1 EP 1171860B1
Authority
EP
European Patent Office
Prior art keywords
display device
panel
pixel
flap
tilting
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
EP99927654A
Other languages
German (de)
English (en)
Other versions
EP1171860A1 (fr
Inventor
Helmut Fischer
Wolfgang KÖGLER
Rudolf Pongratz
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.)
Annax Anzeigesysteme GmbH
Original Assignee
Annax Anzeigesysteme 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
Priority claimed from DE19802218A external-priority patent/DE19802218B4/de
Application filed by Annax Anzeigesysteme GmbH filed Critical Annax Anzeigesysteme GmbH
Publication of EP1171860A1 publication Critical patent/EP1171860A1/fr
Application granted granted Critical
Publication of EP1171860B1 publication Critical patent/EP1171860B1/fr
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
    • G09F9/37—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

Definitions

  • the invention relates to an electromagnetic display device consisting of a plate with a Number of two, essentially square, parts Pixels, each rotatable with one stored, bistable, with respect to their axis of rotation asymmetrical tilt flap are provided in each their two stable positions each one of the two parts of the plate surfaces in the area of Covering pixels, which is the front of the Plate facing side of the tilt flap and that of the tilt flap in this position concealed part of the Plate in the area of the pixel with a first color and the other side of the tilt flap and the other Part of the plate in the area of the pixel with a second color are colored on each tilt flap a permanent magnet is attached near the axis of rotation is and the movement of the tilt flap from one first layer into a second layer by one Pixel assigned, arranged on the back of the plate, a bobbin with bobbin and Coil base and an electromagnet with a core takes place, and the tightening device a carrier has, the coil foot of the electromagnet inserted into the carrier and the coil head is attached
  • Such electromagnetic display devices are used to build up scoreboards where the information presented in a simple manner change, i.e. replace or have adjusted.
  • the scoreboard consists of a large number of individual pixels arranged in a matrix, the pixels that are electromagnetic between two different states back and forth can switch, so that they can be in a light or dark color appear. From these Pixels can be any letters, numbers or other characters, where a Matrix of seven lines with five pixels each Most characters are sufficient.
  • EP 0 401 980 B1 describes one display device readable even in the dark, their individual pixels each from a circular disk with a radial slot, which is one perpendicular to the slot on the Diameter of the circular axis of rotation is rotatably mounted.
  • the circular disc can be by one arranged next to her on the axis of rotation Permanent magnet and one behind it Electromagnets at an angle of approximately 180 ° rotate between two stops, causing the viewer in one position the light front facing the circular disc and the end of one behind it arranged light guide visible in the slot while in the other position the dark one Side of the circular disk facing forward and the Light guide covers.
  • the present invention given the task of an electromagnetic To create display device that both at brightness easy to read as in the dark guaranteed of the information presented.
  • this object is achieved by that each pixel with an opening in the Plate is provided, one on each pixel Carrier arranged in the direction of the opening Base is assigned, and on the base a light emitting diode is supported.
  • the present invention is based on the idea the electromagnetic display device with pixels that are easy to read in daylight, those with bistable tilt flaps between two colors, for example a light one like white or yellow, formed with a reflective film can be, and a dark such as black can be switched back and forth, and every pixel with at least one preferably in the light area arranged light-emitting diode (LED) to be provided at diminishing lighting the legibility of the display device supports and even in the dark ensures good legibility.
  • LED light-emitting diode
  • To do this electromagnetic display device with square Pixels are equipped with bistable Tilting flaps, which depending on the switching status one of take two possible positions on the pixel, between two colors, preferably a light one a dark, switchable.
  • the Tilt flaps are close to their axes of rotation equipped with a permanent magnet, each depending on the position of the tilt flap either with its north or with its south pole towards the on the Rear of the plate arranged and the respective Pixel associated electromagnet has the itself from a bobbin and one in the bobbin inserted magnetic core made of pins soft or remanent material.
  • the use of a remanent core has the advantage of triggering a switching process magnetization of the core is sufficient, the current pulse on the coil is therefore essential shorter than the actual switching process of the Tilt flap can be. Guaranteed at the same time the magnetization of the remanent core a safe Hold the tilting flap in the once set Location.
  • the light emitting diode can be so low Electricity is operated that its lifespan is practically unlimited.
  • One arranged behind the plate Serves to electromagnets and LEDs in defined positions and intervals, that correspond to the pitch of the pixels holders.
  • the coil feet are in the carrier used and this is in the direction of the openings equipped in the pixel-pointing bases, which take up the LEDs and on them Way a uniform distance to the openings ensure in the individual pixels, from which overall good readability of the display device results in darkness.
  • a particularly simple and therefore preferred rotatable Storage of the tilt flaps is obtained by molding appropriate bearing blocks on the plate, the one located at the ends of the axis of rotation of the tilting flap Pick up bearing journal.
  • the tilt flap should be in its two stable positions each cover one half of the square pixel. This can be done, for example, by a Achieve the shape of a rectangular flap, where the axis of rotation is through one of the long ones Sides of the rectangle.
  • Higher switching speeds and the possibility of a 90 ° rotation of the display without Change their physical properties are the advantages of this design of the tilting flaps. For a good area filling of the scoreboard those adjacent to the axis of rotation, possibly also other corners of the tilt flaps with cutouts for Recording the bearing blocks are provided.
  • the one required for the movement of the tilting flaps Permanent magnet can in the simplest case in the Glued to the tilting flap near the axis of rotation his. In a further development of the invention, he is in a pocket inserted in the tilt flap and then closed it, for example taped or welded. To this The permanent magnet is wise against harmful environmental influences securely protected and runs no risk to corrode, still fall off or to move.
  • the attachment of the electromagnet Plate and carrier via detachable snap connections which takes advantage of the elasticity of the material form in recesses of plate and carrier and lock the coil head and coil foot into it.
  • the carrier of the display device is preferred in this way trained that the coil foot of the electromagnet from the side in the radial direction into the carrier can be inserted and locked, one in a groove engaging on the coil foot on the support the electromagnet against axial displacement sets.
  • the display device according to the invention can the display device according to the invention with permanent glowing Operate LEDs. To reduce electricity consumption and operating costs are recommended, however To connect the light emitting diodes of the individual pixels that they are with the movements of the associated tilting flap be switched on and off, so only then light up when they come from the associated tilt flap are released.
  • the display device For good readability of the display device according to the invention in the dark is a large opening angle the one emitted by the individual pixels Light desirable.
  • the Height of the base arranged on the carrier for the LEDs of the individual pixels selected so that the top end of the light emitting diode with the front the plate is flush, so with the The front of the plate is located on one level, which means the shadowing of that emitted by the light emitting diode Light through the side walls of the opening is minimized without the movement of the tilt flaps to affect. From this flush installation method the LED has a large reading angle, which enables a quick detection of the image point the eye enables.
  • the individual pixels with a transparent windscreen equipped by its back from that assigned to the pixel LED is illuminated and as a lens the passing light is scattered.
  • the transparent cover expedient, the opening in the plate so that the light of the LED by as large a part of the part of the pixel not covered by the tilt flap can step through.
  • both Parts of each pixel with one or each equipped with several LEDs expediently different colors on both pixel parts LEDs are used, the Color to the respective coloring of the assigned Parts of the pixels are adjusted. Leave this way create display devices that also in the dark colored characters in front of a different colored Can represent background and yourself therefore excellent for information and advertising purposes suitable.
  • the individual pixels on the plate in the form of a Matrix can be arranged, for example seven Lines with five pixels each, for a total of 35 pixels can contain what numbers, letters and have other characters displayed. From a variety such displays can be then scoreboards to display many characters build, the size of which is flexible to that of each Purpose of the insert dependent need can be adjusted. It is also conceivable Place the matrix-like arrangement of the pixels to choose a strip-like arrangement of the plate, the stripes in columns or stripes also arranged a matrix for displaying Numbers, letters and characters result.
  • the bearing blocks a tilt flap so far out that they partially survive the square pixel area and together with the respective pedestal Neighbor pixels in the area of at the corners of the recessed square pixels are.
  • the field distribution of that generated by the electromagnet Magnetic field can be determined by the exact shape of the pin-shaped coil core.
  • the invention recommends the coil core in axial direction through the coil foot extend what the bundling of the field lines on Reinforced coil head in the desired manner and at the same time unwanted stray fields in the area of the neighboring coils reduced.
  • the lower ends of the Coil cores can be seen through holes in the circuit board be plugged into the electrical connections of LEDs and electromagnets for Power supply are soldered. This gives one a guide that populates the circuit board relieved, and increased mechanical Stability of the entire arrangement.
  • FIG 1 is a supervision of an inventive electromagnetic display device to see the 5 pixels arranged on a strip consists.
  • Each of the pixels essentially has one square shape with cutouts the four corners and is along its diagonals divided in two, each part of a tilting flap (1) is covered.
  • Have the tilt flaps (1) the shape of right-isosceles Triangles with cutouts at the corners, the Hypotenuse (2) of the triangles with the axis of rotation of the Tilt flap collapses.
  • At both ends of the Axes of rotation are arranged on trunnions (3) which the tilting flap is rotatably mounted in bearing blocks (4) is.
  • the Plate (5) In the bottom right of every pixel is the Plate (5) with an opening through which an LED (6) can be seen.
  • the tilting flap (1) is in one position from the left shown in which it covers the light-emitting diode (6).
  • the side of the tilt flap facing up here (1) and the visible part of the pixel Part of the plate (5) are in one here shaded shading shown.
  • the other four shown in the drawing pixels are in the other possible switching state in which the tilt flap occupies a position in which the pixel is in a bright Color appears and the LED (6) closes see is. Switching between the two positions takes place over one located below each pixel Electromagnet on the one on the tilt flap attached permanent magnet (7) acts.
  • the plate (5) is on its sides with the bearing blocks (4) provide adjacent recesses (8), which allow multiple lines of the invention electromagnetic display device with no space between the pixels in a defined Positioning one another and so for example to form a matrix of seven such rows with which letters, numbers and other characters can be displayed easily.
  • Figure 2 is a partially in section drawn pixel of the display device according to the invention seen in side view.
  • There is an electromagnet below the center of the pixel arranged with a bobbin (9) arranged coil head (11) above and below arranged coil foot (12) and a pin-shaped Core (10) consists of retentive material.
  • coil head (11) and coil foot (12) engage in corresponding Recesses in the plate (5) and carrier (16) one where it snaps into detachable snap connections are.
  • the plate (5) only two of the pixels, for example the second and fourth, with Snap connections for the coil head (11) equipped.
  • On the carrier (16) is on the opening for the light emitting diode (6) in the plate (5) pointing base (13) arranged on its has a recess in the upper end the light-emitting diode (6) is held in a well-defined position is.
  • On its surface in the axial direction running grooves serve to accommodate the electrical Connections (14) of the light emitting diode (6).
  • the result is an electromagnetic display device which is characterized by a high area filling distinguished and equally day and night is clearly recognizable and legible.

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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)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Led Device Packages (AREA)

Claims (16)

  1. Dispositif d'affichage électromagnétique composé d'une plaque (5) renfermant un certain nombre de pixels essentiellement de forme carrée et divisés en deux parties, respectivement dotés d'un clapet bistable pivotant (1), asymétrique par rapport à son axe de pivotement,
    les clapets recouvrant dans chacune de leurs deux positions stables l'une des deux parties de la surface de la plaque dans la zone du pixel,
    le côté du clapet (1) pivotant tourné vers la face antérieure de la plaque (5) et la partie de la plaque (5) masquée par le clapet pivotant (1) dans cette position étant d'une couleur au niveau du pixel et l'autre côté du clapet pivotant et l'autre partie de la plaque (5) étant d'une autre couleur,
    chacun des clapets pivotants (1) étant pourvu d'un aimant permanent (7) situé à proximité de l'axe de pivotement,
    et le mouvement du clapet pivotant (1) de la première position à la deuxième étant commandé au moyen d'un électroaimant correspondant au pixel, placé au dos de la plaque (5) et présentant une armature (9), une tête (11), un pied (12) de bobine et un noyau (10),
    caractérisé en ce que
    le dispositif d'affichage est équipé d'un support (16),
    le pied (12) de la bobine de l'électroaimant rentre dans le support (16), et
    la tête (11) de la bobine est fixée sur la plaque (5),
    chaque pixel est doté d'un orifice percé dans la plaque (5),
    à chaque pixel correspond un socle (13) tourné vers l'orifice et monté sur le support, et
    une diode électroluminescente est fixée sur le socle.
  2. Dispositif d'affichage selon la revendication 1, caractérisé en ce que les clapets (1) pivotent sur des tourillons (3) situés aux deux extrémités de l'axe de pivotement et rentrant dans les paliers (4) réalisés sur la plaque (5).
  3. Dispositif d'affichage selon la revendication 1 ou 2, caractérisé en ce que les clapets pivotants (1) sont essentiellement de forme rectangulaire.
  4. Dispositif d'affichage selon la revendication 1 ou 2, caractérisé en ce que les clapets pivotants (1) sont essentiellement de forme triangulaire et en ce que l'axe de pivotement coïncide avec l'hypoténuse (2) respective du triangle.
  5. Dispositif d'affichage selon l'une des revendications 1 à 4, caractérisé en ce que l'aimant permanent (7) est collé sur le clapet pivotant (1) ou est logé dans une sorte de poche ménagée dans le clapet pivotant (1).
  6. Dispositif d'affichage selon l'une des revendications 1 à 5, caractérisé en ce que la plaque (5) et le support (16) sont dotés d'évidements dans lesquels la tête (11) et le pied (12) de la bobine sont fixés au moyen de systèmes de fixation amovibles à encliquetage.
  7. Dispositif d'affichage selon la revendication 6, caractérisé en ce que l'armature (9) et le pied (12) de la bobine peuvent être introduits radialement dans l'évidemment du support (16).
  8. Dispositif d'affichage selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif est équipé de diodes électroluminescentes.
  9. Dispositif d'affichage selon l'une des revendications 1 à 8, caractérisé en ce que les diodes électroluminescentes des différents pixels s'allument et s'éteignent suivant les mouvements des clapets pivotants (1).
  10. Dispositif d'affichage selon l'une des revendications 1 à 9, caractérisé en ce que l'extrémité supérieure de la diode électroluminescente arrive au même niveau que la face antérieure de la plaque (5)
  11. Dispositif d'affichage selon l'une des revendications 1 à 10, caractérisé en ce que l'orifice est recouvert d'une plaque transparente.
  12. Dispositif d'affichage selon l'une des revendications 1 à 11, caractérisé en ce que les deux parties de chaque pixel sont équipées d'au moins une diode électroluminescente.
  13. Dispositif d'affichage selon l'une des revendications 1 à 12, caractérisé en ce que les pixels sont ordonnés en matrices sur la plaque (5).
  14. Dispositif d'affichage selon l'une des revendications 1 à 13, caractérisé en ce que les pixels sont ordonnés en rangées sur la plaque (5).
  15. Dispositif d'affichage selon l'une des revendications 1 à 14, caractérisé en ce que le bord de la plaque (5) est doté d'évidements (8) au niveau des paliers (4), dans lesquels viennent se loger les paliers (4) d'une plaque (5) avoisinante.
  16. Dispositif d'affichage selon l'une des revendications 1 à 15, caractérisé en ce que le noyau (10) de la bobine est prolongé dans le sens axial et traverse le pied (12) de la bobine.
EP99927654A 1998-01-22 1999-04-09 Dispositif d'affichage electromagnetique Expired - Lifetime EP1171860B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19802218A DE19802218B4 (de) 1998-01-22 1998-01-22 Elektromagnetische Anzeigevorrichtung
DE29824339U DE29824339U1 (de) 1998-01-22 1998-01-22 Elektromagnetische Anzeigevorrichtung
PCT/DE1999/001102 WO2000062274A1 (fr) 1998-01-22 1999-04-09 Dispositif d'affichage electromagnetique

Publications (2)

Publication Number Publication Date
EP1171860A1 EP1171860A1 (fr) 2002-01-16
EP1171860B1 true EP1171860B1 (fr) 2004-09-22

Family

ID=27208839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99927654A Expired - Lifetime EP1171860B1 (fr) 1998-01-22 1999-04-09 Dispositif d'affichage electromagnetique

Country Status (6)

Country Link
EP (1) EP1171860B1 (fr)
AT (1) ATE277399T1 (fr)
CA (1) CA2352821C (fr)
DE (2) DE29824339U1 (fr)
ES (1) ES2230859T3 (fr)
WO (1) WO2000062274A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11841586B1 (en) * 2022-07-21 2023-12-12 Dell Products L.P. Position-adjustable backlight

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501912A1 (de) * 1985-01-22 1986-07-24 Friedrich Merk-Telefonbau GmbH, 8000 München Elektromagnetische anzeigevorrichtung
US4860470A (en) * 1988-02-01 1989-08-29 Nei Canada Limited Single core display device
US5771616C1 (en) * 1996-07-19 2001-07-03 Mark Iv Ind Ltd Display device with disk and led

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11841586B1 (en) * 2022-07-21 2023-12-12 Dell Products L.P. Position-adjustable backlight

Also Published As

Publication number Publication date
EP1171860A1 (fr) 2002-01-16
WO2000062274A1 (fr) 2000-10-19
DE29824339U1 (de) 2000-12-21
ATE277399T1 (de) 2004-10-15
CA2352821C (fr) 2007-06-26
DE59910607D1 (de) 2004-10-28
CA2352821A1 (fr) 2000-10-19
ES2230859T3 (es) 2005-05-01

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