EP0899760B1 - Electrical push-button switch with legend - Google Patents

Electrical push-button switch with legend Download PDF

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Publication number
EP0899760B1
EP0899760B1 EP98111591A EP98111591A EP0899760B1 EP 0899760 B1 EP0899760 B1 EP 0899760B1 EP 98111591 A EP98111591 A EP 98111591A EP 98111591 A EP98111591 A EP 98111591A EP 0899760 B1 EP0899760 B1 EP 0899760B1
Authority
EP
European Patent Office
Prior art keywords
push
light
button switch
rocker
button
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
EP98111591A
Other languages
German (de)
French (fr)
Other versions
EP0899760A3 (en
EP0899760A2 (en
Inventor
Stefan Dipl.-Ing. Wieske
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.)
ABB Patent GmbH
Original Assignee
ABB Patent 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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0899760A2 publication Critical patent/EP0899760A2/en
Publication of EP0899760A3 publication Critical patent/EP0899760A3/en
Application granted granted Critical
Publication of EP0899760B1 publication Critical patent/EP0899760B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/025—Light-emitting indicators

Definitions

  • the invention relates to an electrical push button switch with an operating rocker, that has a title block.
  • the key switch can be part of a key arrangement be with several such push buttons.
  • Button arrangements with inscribable, strip-shaped control surfaces are preferred so e.g. mounted on a wall so that the characters run horizontally, the actuating rocker pivots about a vertical axis. They are orders known, in which a frame that surrounds several buttons, a title block carries, or where the pushbuttons all over or on partial areas of the text fields to have. Such button arrangements are particularly electronic for operation Installation devices used. Button arrangements with inscribable rockers are known for example from G 93 05 822 and G 94 06 434.
  • buttons that a label is only available Ambient light is legible because there is no self-illumination.
  • the invention has for its object to provide an electrical push button switch, the rocker is provided with an illuminated text field and with a largely uniform backlighting of the text field.
  • This button is achieved by means of a fiber optic wedge, that despite almost punctiform light introduction by a light-emitting diode LED a largely uniform backlighting of the entire text field is given.
  • a status display is also proposed as an advantageous embodiment to create by means of a further light-emitting diode LED, the light of which means a light guide element is guided to the rocker surface, and also one To provide a separator on the bottom of the rocker, with which a mutual influence the lighting equipment is avoided.
  • Fig. 1 shows a button arrangement 26 with three electrical push buttons 10, wherein their respective actuation rockers 3 are essentially visible from the buttons 10 are.
  • the rockers 3 are in a base 8 by locking means 24, 25 and spring means 13 held in a rest position.
  • the base 8 is more common Base for all buttons 10 of the arrangement 26.
  • Each button 10 has a text field 11 and a status display 19.
  • With reference numeral 27 is an infrared transparent front cover of the base 8 referred to, but related is not important with the invention. A protrudes through the cover 27 Operating button 20 of a pressure sequence switch or pushbutton, with which the lighting means, so let the LEDs 4 switch.
  • the writing fields 11 are each through an incision or shaft 21 of the rockers 3 formed, which can be covered by a transparent cover 1.
  • the strip-shaped covers 1 are each at their ends with locking elements 17, 18 provided.
  • a light guide wedge 2 can be inserted in each of the incisions 21.
  • buttons 10 there is a light guide wedge 2 inserted.
  • the cover 1 is in the middle button 10 with its first locking element 17 hooked into the rocker 3.
  • a transparent label Insert 12 e.g. a translucent film is shown, which is arranged under the cover 1 is.
  • the cover 1 is indicated by folding it down Arrow direction closed, being at its second end by means of the second Snap element 18 snaps into rocker 3.
  • the covers 1 can be used as a magnifying glass be designed to improve the readability of one located on the insert 12 Font.
  • reference numerals 22, 23 are reflective coatings of the light guide wedge 2 referred to, applied with the recess of the light entry and exit surfaces 14, 16 can be. By such a measure, the brightness on the Increase light exit surface 16.
  • Fig. 2 shows a section through the key switch 10 at a point where the Labeling field 11 of the rocker 3 is located.
  • the base 8 and the rocker 3 are plastic parts.
  • the rocker 3 is with the help of Locking means 24, 25 hooked into the base and is spring-loaded in two Contact elements 13, in particular microswitches is generated in the rest position held.
  • a circuit board 9 is arranged on which the contact elements 13, as well as the first LED 4 for lettering field lighting and a second LED 5 for Status display, i.e. are arranged to display a switching status.
  • the contact elements 13 are actuated via actuation cams 30 on the rocker 3.
  • the first LED 4 feeds light into the light entry surface 14 of the light guide wedge 2, that emerges at the exit surface 16 and backlit the transparent insert 12.
  • the second LED 5 feeds light into a light guide element 6, which is on the surface the rocker 3 emerges as a status display 19.
  • a separator 7 at the bottom of the Rocker 3 prevents the passage of light from the lettering field lighting to the status display. It can be seen that the light guides 2, 6 are spaced somewhat apart from the LEDs 4, 5 are, which enables a rocker movement.
  • pin 28 and a multiple plug 29 is the key switch 10, or the button arrangement 26 (Fig. 1) attachable to a flush-mounted device, not shown.

Landscapes

  • Push-Button Switches (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The push-button switch (10) has an operating wiper (3) provided with a character field (11) with a transparent cover (1), which is illuminated from the rear by a light source, e.g. an LED, cooperating with a light conductor prism (2) inserted in a reception shaft (21) in the operating wiper, with its light output surface (6) facing the transparent cover.

Description

Die Erfindung bezieht sich auf einen elektrischen Tastschalter mit einer Betätigungswippe, die ein Schriftfeld aufweist. Der Tastschalter kann Teil einer Tasteranordnung mit mehreren solcher Tastschalter sein.The invention relates to an electrical push button switch with an operating rocker, that has a title block. The key switch can be part of a key arrangement be with several such push buttons.

Tasteranordnungen mit beschriftbaren, streifenförmigen Bedienflächen werden vorzugsweise so z.B. an einer Wand montiert, daß die Schriftzeilen horizontal verlaufen, wobei die Betätigungswippe um eine vertikale Achse schwenkt. Es sind Anordnungen bekannt, bei denen ein Rahmen, der mehrere Taster umgibt, ein Schriftfeld trägt, oder bei denen die Tasterwippen ganzflächig oder auf Teilflächen Schriftfelder haben. Solche Tasteranordnungen werden insbesondere zur Bedienung elektronischer Installationsgeräte verwendet. Tasteranordnungen mit beschriftbaren Wippen sind beispielsweise aus G 93 05 822 und G 94 06 434 bekannt.Button arrangements with inscribable, strip-shaped control surfaces are preferred so e.g. mounted on a wall so that the characters run horizontally, the actuating rocker pivots about a vertical axis. They are orders known, in which a frame that surrounds several buttons, a title block carries, or where the pushbuttons all over or on partial areas of the text fields to have. Such button arrangements are particularly electronic for operation Installation devices used. Button arrangements with inscribable rockers are known for example from G 93 05 822 and G 94 06 434.

Nachteilig ist bei den bekannten Tastern, daß eine Beschriftung nur bei vorhandenem Umgebungslicht lesbar ist, da keine Eigenbeleuchtung vorhanden ist.A disadvantage of the known buttons that a label is only available Ambient light is legible because there is no self-illumination.

Der Erfindung liegt die Aufgabe zugrunde, einen elektrischen Tastschalter anzugeben, dessen Betätigungswippe mit einem beleuchtbaren Schriftfeld versehen ist und wobei eine weitgehend gleichmäßige Hinterleuchtung des Schriftfelds gegeben ist.The invention has for its object to provide an electrical push button switch, the rocker is provided with an illuminated text field and with a largely uniform backlighting of the text field.

Diese Aufgabe wird durch einen Tastschalter mit den im Anspruch 1 angegebenen Merkmalen gelöst. This object is achieved by a push button switch with the specified in claim 1 Features resolved.

Bei diesem Taster wird mittels eines Lichtleiterkeils erreicht, daß trotz nahezu punktförmiger Lichteinleitung durch eine lichtemittierende Diode LED eine weitgehend gleichmäßige Hinterleuchtung des gesamten Schriftfelds gegeben ist.This button is achieved by means of a fiber optic wedge, that despite almost punctiform light introduction by a light-emitting diode LED a largely uniform backlighting of the entire text field is given.

Als vorteilhafte Ausgestaltung wird vorgeschlagen, zusätzlich eine Statusanzeige mittels einer weiteren lichtemittierenden Diode LED zu schaffen, deren Licht mittels eines Lichtleiterelements zur Wippenoberfläche geführt wird, und außerdem einen Trennsteg an der Wippenunterseite vorzusehen, mit dem eine gegenseitige Beeinflussung der Beleuchtungseinrichtungen vermieden wird.A status display is also proposed as an advantageous embodiment to create by means of a further light-emitting diode LED, the light of which means a light guide element is guided to the rocker surface, and also one To provide a separator on the bottom of the rocker, with which a mutual influence the lighting equipment is avoided.

Weitere Einzelheiten und Vorteile des Tasters ergeben sich aus der nachstehenden Beschreibung eines Ausführungsbeispiels anhand der Zeichnungsfiguren.Further details and advantages of the button result from the following Description of an embodiment with reference to the drawing figures.

Es zeigen:

Fig. 1
eine Tasteranordnung mit drei Tastern, die jeweils ein beleuchtetes Schriftfeld haben und
Fig. 2
einen Schnitt durch einen Taster mit Beleuchtungseinrichtungen zur Schriftfeldbeleuchtung und zur Statusanzeige.
Show it:
Fig. 1
a button arrangement with three buttons, each with an illuminated text field and
Fig. 2
a section through a button with lighting devices for lettering field lighting and status display.

Fig. 1 zeigt eine Tasteranordnung 26 mit drei elektrischen Tastschaltern 10, wobei von den Tastern 10 im wesentlichen ihre jeweiligen Betätigungswippen 3 sichtbar sind. Die Wippen 3 sind in einem Sockel 8 durch Rastmittel 24, 25 und Federmittel 13 in einer Ruhestellung gehalten. Im Ausführungsbeispiel ist der Sockel 8 gemeinsamer Sockel für alle Taster 10 der Anordnung 26. Jeder Taster 10 hat ein Schriftfeld 11 und eine Statusanzeige 19. Mit Bezugszeichen 27 ist eine infrarotlichtdurchlässige frontseitige Abdeckung des Sockels 8 bezeichnet, die jedoch im Zusammenhang mit der Erfindung nicht von Bedeutung ist. Durch die Abdeckung 27 ragt ein Betätigungsknopf 20 eines Druckfolgeschalters oder Tasters, mit dem sich die Beleuchtungsmittel, also die LED's 4 schalten lassen.Fig. 1 shows a button arrangement 26 with three electrical push buttons 10, wherein their respective actuation rockers 3 are essentially visible from the buttons 10 are. The rockers 3 are in a base 8 by locking means 24, 25 and spring means 13 held in a rest position. In the exemplary embodiment, the base 8 is more common Base for all buttons 10 of the arrangement 26. Each button 10 has a text field 11 and a status display 19. With reference numeral 27 is an infrared transparent front cover of the base 8 referred to, but related is not important with the invention. A protrudes through the cover 27 Operating button 20 of a pressure sequence switch or pushbutton, with which the lighting means, so let the LEDs 4 switch.

Die Schriftfelder 11 sind jeweils durch einen Einschnitt oder Schacht 21 der Wippen 3 gebildet, der jeweils durch eine transparente Abdeckung 1 abdeckbar ist. Die streifenförmigen Abdeckungen 1 sind jeweils an ihren Enden mit Rastelementen 17, 18 versehen. In die Einschnitte 21 ist jeweils ein Lichtleiterkeil 2 einlegbar.The writing fields 11 are each through an incision or shaft 21 of the rockers 3 formed, which can be covered by a transparent cover 1. The strip-shaped covers 1 are each at their ends with locking elements 17, 18 provided. A light guide wedge 2 can be inserted in each of the incisions 21.

In Fig. 1 sind unterschiedliche Montageschritte zur Fertigstellung der Beleuchtungseinrichtung gezeigt. In den mittleren der drei Taster 10 ist ein Lichtleiterkeil 2 eingelegt. Die Abdeckung 1 ist beim mittleren Taster 10 mit ihrem ersten Rastelement 17 in die Wippe 3 eingehängt. Außerdem ist eine beschriftbare transparente Einlage 12, z.B. eine transluzente Folie dargestellt, die unter der Abdeckung 1 angeordnet ist. Die Abdeckung 1 wird durch Herunterklappen in der angegebenen Pfeilrichtung geschlossen, wobei sie an ihrem zweiten Ende mittels des zweiten Rastelements 18 in der Wippe 3 einrastet. Die Abdeckungen 1 können als Lupe ausgebildet sein zur Verbeserung der Lesbarkeit einer auf der Einlage 12 befindlichen Schrift.1 shows different assembly steps for the completion of the lighting device shown. In the middle of the three buttons 10 there is a light guide wedge 2 inserted. The cover 1 is in the middle button 10 with its first locking element 17 hooked into the rocker 3. There is also a transparent label Insert 12, e.g. a translucent film is shown, which is arranged under the cover 1 is. The cover 1 is indicated by folding it down Arrow direction closed, being at its second end by means of the second Snap element 18 snaps into rocker 3. The covers 1 can be used as a magnifying glass be designed to improve the readability of one located on the insert 12 Font.

Mit Bezugszeichen 22, 23 sind reflektierende Beschichtungen des Lichtleiterkeils 2 bezeichnet, die unter Aussparung der Lichtein- und -austrittsflächen 14, 16 aufgebracht werden können. Durch eine solche Maßnahme läßt sich die Helligkeit an der Lichtaustrittsfläche 16 erhöhen.With reference numerals 22, 23 are reflective coatings of the light guide wedge 2 referred to, applied with the recess of the light entry and exit surfaces 14, 16 can be. By such a measure, the brightness on the Increase light exit surface 16.

Fig. 2 zeigt einen Schnitt durch den Tastschalter 10 an einer Stelle, an der sich das Beschriftungsfeld 11 der Wippe 3 befindet.Fig. 2 shows a section through the key switch 10 at a point where the Labeling field 11 of the rocker 3 is located.

Der Sockel 8 und die Wippe 3 sind Kunststoffteile. Die Wippe 3 ist mit Hilfe von Rastmitteln 24, 25 in den Sockel eingehängt und wird durch Federkraft, die in zwei Kontaktelementen 13, insbesondere Mikroschaltern erzeugt wird, in der Ruhelage gehalten. Im Sockel 8 ist eine Leiterplatte 9 angeordnet, auf der die Kontaktelemente 13, sowie die erste LED 4 zur Schriftfeldbeleuchtung und eine zweite LED 5 zur Statusanzeige, also zur Anzeige eines Schaltzustands angeordnet sind. Die Kontaktelemente 13 werden über Betätigungsnocken 30 an der Wippe 3 betätigt.The base 8 and the rocker 3 are plastic parts. The rocker 3 is with the help of Locking means 24, 25 hooked into the base and is spring-loaded in two Contact elements 13, in particular microswitches is generated in the rest position held. In the base 8, a circuit board 9 is arranged on which the contact elements 13, as well as the first LED 4 for lettering field lighting and a second LED 5 for Status display, i.e. are arranged to display a switching status. The contact elements 13 are actuated via actuation cams 30 on the rocker 3.

Die erste LED 4 speist Licht in die Lichteintrittsfläche 14 des Lichtleiterkeils 2 ein, das an der Austrittsfläche 16 austritt und die transparente Einlage 12 hinterleuchtet. Die zweite LED 5 speist Licht in ein Lichtleiterelement 6 ein, das an der Oberfläche der Wippe 3 als Statusanzeige 19 austritt. Ein Trennsteg 7 an der Unterseite der Wippe 3 verhindert einen Lichtübertritt von der Schriftfeldbeleuchtung zur Statusanzeige. Es ist ersichtlich, daß die Lichtleiter 2, 6 von den LED's 4, 5 jeweils etwas beabstandet sind, wodurch eine Wippenbewegung ermöglicht ist.The first LED 4 feeds light into the light entry surface 14 of the light guide wedge 2, that emerges at the exit surface 16 and backlit the transparent insert 12. The second LED 5 feeds light into a light guide element 6, which is on the surface the rocker 3 emerges as a status display 19. A separator 7 at the bottom of the Rocker 3 prevents the passage of light from the lettering field lighting to the status display. It can be seen that the light guides 2, 6 are spaced somewhat apart from the LEDs 4, 5 are, which enables a rocker movement.

Mit Zapfen 28 und einem Mehrfachstecker 29 ist der Tastschalter 10, bzw. Die Tasteranordnung 26 (Fig. 1) auf ein nicht dargestelltes Unterputzgerät aufsteckbar. With pin 28 and a multiple plug 29 is the key switch 10, or the button arrangement 26 (Fig. 1) attachable to a flush-mounted device, not shown.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
transparente Abdeckungtransparent cover
22
LichtleiterkeilLight guide wedge
33
Betätigungswipperocker switch
44
erste lichtemittierende Diode LEDfirst light-emitting diode LED
55
zweite LEDsecond LED
66
Lichtleitelementlight guide
77
Trennsteg oder TrennwandDivider or partition
88th
Sockelbase
99
Leiterplattecircuit board
1010
TastschalterPush switch
1111
SchriftfeldTitle Block
1212
beschriftbare transparente Einlagewritable transparent insert
1313
Mikroschaltermicroswitch
1414
LichteintrittsflächeLight entry surface
1515
dickes Keilendethick wedge end
1616
LichtaustrittsflächeLight-emitting surface
1717
erstes Rastelement der Abdeckungfirst locking element of the cover
1818
zweites Rastelement der Abdeckungsecond locking element of the cover
1919
Statusanzeigestatus display
2020
Betätigungsknopf eines Mikroschalters oder TastersActuation button of a microswitch or push button
2121
Lichtleiterschacht oder Einschnitt in der WippeOptical fiber shaft or incision in the seesaw
2222
erste Beschichtungfirst coating
2323
zweite Beschichtungsecond coating
2424
Rasthaken oder Rastmittel der WippeLocking hook or locking means of the rocker
2525
Rastmittel am SockelLatching means on the base
2626
Tastschalteranordnungkeyswitch
2727
infrarotlichtdurchlässige AbdeckungInfrared transparent cover
2828
Zapfenspigot
2929
MehrfachsteckerMultiple plug
3030
Betätigungsnockenactuating cam

Claims (9)

  1. An electrical push-button switch, with an actuating rocker (3) comprising a legend (11) which is provided with a transparent cover (1), characterized in that the push-button switch is provided with a lighting device for lighting the legend (11) in which a light guide wedge (2) is inserted into a cut-out or shaft (21) of the rocker (3), in whose light inlet surface (14) light can be fed by means of a light source (4) in the region of its thick edge end (15) and whose light outlet surface (16) faces the cover (1) and is adjusted to its dimensions, and that a transparent insert (12) is placed between the cover (1) and the light guide wedge (2)
  2. A push-button switch as claimed in claim 1, characterized in that the light source (4) is a light-emitting diode LED.
  3. A push-button switch as claimed in one of the preceding claims, characterized in that the insert (12) is a translucent film.
  4. A push-button switch as claimed in one of the preceding claims, characterized in that the cover (1) comprises latching elements (17, 18) with the help of which it can be hooked into the rocker (3) and can be latched when it is closed.
  5. A push-button switch as claimed in one of the preceding claims, characterized in that with the exception of its light inlet and outlet surfaces (14, 16) the surface of the light guide wedge (2) is provided with light-reflective coatings (22, 23).
  6. A push-button switch as claimed in one of the preceding claims, characterized in that a base (8) is present on which a printed circuit board (9) is arranged on which the light source (4) is arranged and in which the rocker (3) is held in its idle position with the help of latching and spring means (13, 24, 25).
  7. A push-button switch as claimed in one of the preceding claims, characterized in that furthermore a status display (19) is present which is formed by a second light source (5), preferably an LED, with which the light can be supplied to a light guide element (6) with which the light is guided into the region of the surface of the rocker (3) and is visible there as a status display (19).
  8. A push-button switch as claimed in claim 7, characterized in that towards the interior of the switch the rocker (3) is connected to a substantially light-impermeable separating bridge (7) which ensures that the control panel lighting and the status lighting do not influence each other.
  9. A push-button switch as claimed in one of the preceding claims, characterized in that it is part of a push-button arrangement (26) with several push-button switches (10).
EP98111591A 1997-09-01 1998-06-24 Electrical push-button switch with legend Expired - Lifetime EP0899760B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19737908A DE19737908A1 (en) 1997-09-01 1997-09-01 Electric key switch with text field
DE19737908 1997-09-01

Publications (3)

Publication Number Publication Date
EP0899760A2 EP0899760A2 (en) 1999-03-03
EP0899760A3 EP0899760A3 (en) 1999-09-15
EP0899760B1 true EP0899760B1 (en) 2003-08-27

Family

ID=7840689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111591A Expired - Lifetime EP0899760B1 (en) 1997-09-01 1998-06-24 Electrical push-button switch with legend

Country Status (3)

Country Link
EP (1) EP0899760B1 (en)
AT (1) ATE248430T1 (en)
DE (2) DE19737908A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10234023B4 (en) * 2002-07-26 2010-02-11 Abb Ag Labeling field illumination of an electrical installation device
DE10242171C1 (en) * 2002-09-10 2003-08-21 Abb Patent Gmbh Rocker for an electrical unit, has a large surface light conductor to give a homogenous illumination over visible field, placed centrally at rocker surface area together with injection molded function elements
DE10242170B4 (en) * 2002-09-10 2005-07-21 Abb Patent Gmbh Optical fiber of an electrical installation device
DE10251871B4 (en) * 2002-09-30 2022-03-17 BSH Hausgeräte GmbH switch device
DE10246399B3 (en) * 2002-10-04 2004-02-19 Abb Patent Gmbh Writing field illumination for electrical installation device e.g. wall-mounted switch, uses electroluminescent foil positioned in writing field chamber below printed foil
DE10325344A1 (en) * 2003-06-05 2004-12-30 Daimlerchrysler Ag Electrical switch has built in lighting provided by a strip of light emitting diode elements with a diffuser plate
DE202004018756U1 (en) * 2004-12-04 2006-04-13 Weidmüller Interface GmbH & Co. KG Electrical device with a status indicator
DE102011016220A1 (en) * 2011-04-06 2012-10-11 Abb Ag Rocker support with at least one rocker switch a door station or home station of a home communication system
DE102011016219A1 (en) * 2011-04-06 2012-10-11 Abb Ag Rocker support with at least one rocker switch of a door station or home station of a home communication system
DE102013205577A1 (en) 2013-03-28 2014-10-02 Zf Friedrichshafen Ag Key module for a key of a keyboard and method for producing a key module for a key of a keyboard

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314323A1 (en) * 1983-04-20 1984-10-31 Robert Bosch Gmbh, 7000 Stuttgart Device for illuminating passive displays
JPS61127506U (en) * 1985-01-30 1986-08-11
DE3639008A1 (en) * 1986-11-14 1988-05-19 Bosch Gmbh Robert DISPLAY DEVICE WITH LIQUID CRYSTAL CELL, PREFERABLY FOR MOTOR VEHICLES
DE9015937U1 (en) * 1990-11-22 1991-02-07 Erwin Renz Metallwarenfabrik GmbH + Co KG, 7141 Kirchberg Bell panel
DE9305822U1 (en) * 1993-04-20 1993-06-24 Gira Giersiepen Gmbh & Co Kg, 42477 Radevormwald Electrical installation device, especially buttons
DE9406434U1 (en) * 1994-04-18 1994-09-08 Gira Giersiepen Gmbh & Co Kg, 42477 Radevormwald Electrical push button

Also Published As

Publication number Publication date
ATE248430T1 (en) 2003-09-15
DE59809396D1 (en) 2003-10-02
EP0899760A3 (en) 1999-09-15
DE19737908A1 (en) 1999-03-04
EP0899760A2 (en) 1999-03-03

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