EP1406275A1 - Illumination for the labelling area of an electrical apparatus - Google Patents

Illumination for the labelling area of an electrical apparatus Download PDF

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Publication number
EP1406275A1
EP1406275A1 EP03019906A EP03019906A EP1406275A1 EP 1406275 A1 EP1406275 A1 EP 1406275A1 EP 03019906 A EP03019906 A EP 03019906A EP 03019906 A EP03019906 A EP 03019906A EP 1406275 A1 EP1406275 A1 EP 1406275A1
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EP
European Patent Office
Prior art keywords
cover
electroluminescent film
light
installation device
chamber
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.)
Withdrawn
Application number
EP03019906A
Other languages
German (de)
French (fr)
Inventor
Andreas Dipl.-Ing. Scheib
Günter Dipl.-Ing. Schulte-Lippern
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 EP1406275A1 publication Critical patent/EP1406275A1/en
Withdrawn legal-status Critical Current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
    • 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
    • H01H2009/186—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks using an electroluminiscent panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/018—Electroluminescent panel

Definitions

  • the invention relates to labeling field lighting of an electrical Installation device according to the preamble of the claim.
  • the invention can for example with sockets, switches, dimmers or buttons - especially with water-protected surface-mounted devices - can be used.
  • From DE 41 22 118 C2 is a lettering field lighting for electrical Installation devices known, with one arranged on a writing medium Writing field from its back illuminating light source and with a Light guide element which is arranged between the light source and the writing medium and an indentation on the back facing away from the writing medium Includes recording of the light source.
  • the light guide element contacts the writing medium to at least two thirds of its area and is in the area of the molding for the Light source reset from the level of the letter holder.
  • the light guide element has Bridges which delimit a funnel-shaped cavity and which act as light channels from serve the light source to the side areas of the light guide element.
  • the centric An indentation arranged in the center of the surface of the light guide element has a Breakthrough on through which light from the light source directly to the back of the writer shines.
  • the back of the The light guide element has in the area of the side areas adjoining the webs a corrugation running transversely to the direction of light propagation.
  • an electrical key switch which one Actuating rocker with lettering field, that with a transparent cover is provided.
  • a fiber optic wedge inserted into an incision or shaft of the rocker, in the Light entry area in the area of its thick wedge light using a light source is feedable.
  • the light exit surface of the light guide wedge faces the cover and adapted to their dimensions.
  • a labeled or inscribable transparent insert can be inserted.
  • the light guide source is a light-emitting diode LED.
  • the surface of the fiber optic wedge is with the exception of the light entry and exit surfaces with light reflecting Coatings.
  • the invention has for its object a very compact structure Labeling field lighting of an electrical installation device at the entrance specified type.
  • the advantages that can be achieved with the invention are, in particular, that with the help the electroluminescent film a very uniform and intensive illumination of the Writing field over the entire defined flat or curved surface.
  • the Electroluminescent film is very durable and has a very high efficiency on. Different basic colors are possible.
  • the design of the title block chamber and the illuminated text field is extremely compact and very flat, so that the Space requirement is very small.
  • the electroluminescent film is very robust (For example, extremely pressure-resistant), practical and flexible, which on the one hand Assembly facilitates and on the other hand the design of a desired design of the Installation device, for example the shape of the device cover, Device frame or the rocker switch relieved.
  • the surface of the Electroluminescent film adapts to the desired shape.
  • Fig. 1 is a view of the device cover of an electrical installation device shown.
  • Device cover 3 is the device cover of a switch or surface-mounted push buttons.
  • a writing field chamber 4 which for receiving a Electroluminescent film 7 is suitable.
  • the connecting strands 8 of the electroluminescent film 7 are through a bottom opening 5 of the title block chamber 4 in the Interior of the electrical installation device, where they by means of their end connection contacts 9 to corresponding contacts of the device insert (see Fig. 3) are inserted.
  • the electroluminescent film 7 is by means of a crystal-clear cover plate 10 covered (this serves as a mechanical protective cover), which over several, in corresponding latching recesses of the switchgear chamber chamber 4 engaging latch hooks 11 can be attached to the top of the device cover 3.
  • a crystal-clear cover plate 10 covered (this serves as a mechanical protective cover), which over several, in corresponding latching recesses of the switchgear chamber chamber 4 engaging latch hooks 11 can be attached to the top of the device cover 3.
  • a crystal-clear cover plate 10 this serves as a mechanical protective cover
  • the electrical installation device 1 in a surface-mounted version consists in a generally known manner from a device box 2 and the Device cover 3, which has a large rocker switch 13 with a central field for has a control light 14.
  • the Device cover 3 Along the upper side edge of the device cover 3 extends the illuminated text field 6 with text field chamber 4 and Electroluminescent film 7.
  • FIG. 3 shows a view of an electrical installation device 1 cut open to the side shown, consisting of device socket 2, device cover 3 (including rocker switch 13) and device insert 12, here designed as a switch insert.
  • device insert 12 here designed as a switch insert.
  • the electroluminescent film 7 is advantageously suitable for direct connection to 230 volts Connection voltage, so that additional voltage-limiting components - such as Series resistors - can advantageously be omitted.
  • the electroluminescent film 7 is constructed in a layered manner, consisting of Front electrode made of transparent material, fluorescent material, insulation and back electrode made of non-transparent material, the connecting strands with the front electrode and the back electrode are connected and the electrical voltage between Front electrode and back electrode is applied.
  • the light effect is based on one Semiconductor phenomenon: Due to the electric field between the front electrode and Back electrodes become electrons of the phosphor in a higher energy level lifted and recombine in the visible range. The light produced is narrow-band, almost monochromatic and absolutely even.

Landscapes

  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The writing field illumination is used for a printed foil, positioned beneath a cover plate (10) within a writing field provided along one side edge of the cover (3) of the installation device, as a writing field chamber (4) containing an electroluminescent foil (7). The writing field chamber has an opening (5) for passage of the terminal leads (8) for the electroluminescent foil, cooperating with terminal contacts (9) within the installation device.

Description

Die Erfindung bezieht sich auf eine Beschriftungsfeldbeleuchtung eines elektrischen Installationsgerätes gemäß dem Oberbegriff des Patentanspruchs. Die Erfindung kann beispielsweise bei Steckdosen, Schaltern, Dimmern oder Tastern - insbesondere bei wassergeschützen Aufputzgeräten - verwendet werden.The invention relates to labeling field lighting of an electrical Installation device according to the preamble of the claim. The invention can for example with sockets, switches, dimmers or buttons - especially with water-protected surface-mounted devices - can be used.

Aus der DE 41 22 118 C2 ist eine Schriftfeldbeleuchtung für elektrische Installationsgeräte bekannt, mit einer das auf einem Schriftträger angeordnete Schriftfeld von seiner Rückseite her beleuchtenden Lichtquelle sowie mit einem Lichtleiterelement, das zwischen der Lichtquelle und dem Schriftträger angeordnet ist und auf seiner dem Schriftträger abgewandten Rückseite eine Einformung zur Aufnahme der Lichtquelle aufweist. Das Lichtleiterelement kontaktiert den Schriftträger zu wenigstens zwei Drittel seiner Fläche und ist im Bereich der Einformung für die Lichtquelle aus der Schriftträggerebene zurückgesetzt. Das Lichtleiterelement besitzt Stege, welche einen trichterförmigen Hohlraum begrenzen und die als Lichtkanäle von der Lichtquelle zu den Seitenbereichen des Lichtleiterelementes dienen. Die zentrisch in der Flächenmitte des Lichtleiterelementes angeordnete Einformung weist eine Durchbruchsöffnung auf, durch welche Licht von der Lichtquelle direkt auf die Rückseite des Schriftträgers strahlt. Die dem Schriftträger abgewandte Rückseite des Lichtleiterelementes weist im Bereich der an die Stege anschließenden Seitenbereiche eine quer zur Lichtausbreitungsrichtung verlaufende Riffelung auf.From DE 41 22 118 C2 is a lettering field lighting for electrical Installation devices known, with one arranged on a writing medium Writing field from its back illuminating light source and with a Light guide element which is arranged between the light source and the writing medium and an indentation on the back facing away from the writing medium Includes recording of the light source. The light guide element contacts the writing medium to at least two thirds of its area and is in the area of the molding for the Light source reset from the level of the letter holder. The light guide element has Bridges which delimit a funnel-shaped cavity and which act as light channels from serve the light source to the side areas of the light guide element. The centric An indentation arranged in the center of the surface of the light guide element has a Breakthrough on through which light from the light source directly to the back of the writer shines. The back of the The light guide element has in the area of the side areas adjoining the webs a corrugation running transversely to the direction of light propagation.

Aus der EP 0 899 760 A2 ist ein elektrischer Tastschalter bekannt, welcher eine Betätigungswippe mit Schriftfeld aufweist, das mit einer transparenten Abdeckung versehen ist. Bei einer Beleuchtungseinrichtung zur Beleuchtung des Schriftfeldes ist ein Lichtleiterkeil in einen Einschnitt oder Schacht der Wippe eingelegt, in dessen Lichteintrittsfläche im Bereich seines dicken Keilendes Licht mittels einer Lichtquelle einspeisbar ist. Die Lichtaustrittsfläche des Lichtleiterkeils ist der Abdeckung zugewandt und an deren Abmessungen angepaßt. Zwischen die Abdeckung und den Lichtleiterkeil ist eine beschriftete oder beschriftbare transparente Einlage einlegbar. Die Lichtleiterquelle ist eine lichtemittierende Diode LED. Die Oberfläche des Lichtleiterkeils ist mit Ausnahme der Lichtein- und -austrittsflächen mit lichtreflektierenden Beschichtungen versehen.From EP 0 899 760 A2 an electrical key switch is known, which one Actuating rocker with lettering field, that with a transparent cover is provided. In the case of an illuminating device for illuminating the writing field a fiber optic wedge inserted into an incision or shaft of the rocker, in the Light entry area in the area of its thick wedge light using a light source is feedable. The light exit surface of the light guide wedge faces the cover and adapted to their dimensions. Between the cover and the optical fiber wedge a labeled or inscribable transparent insert can be inserted. The The light guide source is a light-emitting diode LED. The surface of the fiber optic wedge is with the exception of the light entry and exit surfaces with light reflecting Coatings.

Der Erfindung liegt die Aufgabe zugrunde, eine sehr kompakt aufgebaute Beschriftungsfeldbeleuchtung eines elektrischen Installationsgerätes der eingangs genannten Art anzugeben.The invention has for its object a very compact structure Labeling field lighting of an electrical installation device at the entrance specified type.

Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffes erfindungsgemäß durch die im Kennzeichen des Patentanspruchs angegebenen Merkmale gelöst.This task is combined with the features of the generic term according to the invention indicated in the characterizing part of the claim Features solved.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß mit Hilfe der Elektrolumineszensfolie eine sehr gleichmäßige und intensive Ausleuchtung des Schriftfeldes über die gesamte definierte ebene oder gekrümmte Fläche erfolgt. Die Elektrolumineszensfolie ist sehr langlebig und weist einen sehr hohen Wirkungsgrad auf. Es sind verschiedene Grundfarben möglich. Die Gestaltung der Schriftfeldkammer und des beleuchteten Schriftfeldes ist äußerst kompakt und sehr flach, so daß der Platzbedarf sehr gering ist. Zudem ist die Elektrolumineszensfolie sehr robust (beispielsweise extrem druckbelastbar), praxistauglich und flexibel, was zum einen die Montage erleichtert und zum anderen die Gestaltung eines gewünschten Designs des Installationsgerätes, beispielsweise die Formgebung des Gerätedeckels, Geräterahmens oder der Schaltwippe erleichtert. Die Oberfläche der Elektrolumineszensfolie paßt sich der gewünschten Formgebung an.The advantages that can be achieved with the invention are, in particular, that with the help the electroluminescent film a very uniform and intensive illumination of the Writing field over the entire defined flat or curved surface. The Electroluminescent film is very durable and has a very high efficiency on. Different basic colors are possible. The design of the title block chamber and the illuminated text field is extremely compact and very flat, so that the Space requirement is very small. In addition, the electroluminescent film is very robust (For example, extremely pressure-resistant), practical and flexible, which on the one hand Assembly facilitates and on the other hand the design of a desired design of the Installation device, for example the shape of the device cover, Device frame or the rocker switch relieved. The surface of the Electroluminescent film adapts to the desired shape.

Weitere Vorteile sind aus der nachstehenden Beschreibung ersichtlich.Further advantages are evident from the description below.

Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert. Es zeigen:

Fig.1
eine Sicht auf den Gerätedeckel eines elektrischen Installationsgerätes,
Fig. 2
eine perspektivische Ansicht eines elektrischen Installationsgerätes,
Fig. 3
eine Sicht in ein seitlich aufgeschnittenes elektrisches Installationsgerät.
The invention is explained below with reference to the embodiments shown in the drawing. Show it:
Fig.1
a view of the device cover of an electrical installation device,
Fig. 2
a perspective view of an electrical installation device,
Fig. 3
a view of an electrical installation device cut open to the side.

In Fig. 1 ist eine Sicht auf den Gerätedeckel eines elektrischen Installationsgerätes dargestellt. Beim Gerätedeckel 3 handelt es sich um den Gerätedeckel eines Schalters oder Tasters in Aufputz-Ausführung. Längs der oberen Seitenkante des Gerätedeckels 3 erstreckt sich eine Schriftfeldkammer 4, welche zur Aufnahme einer Elektrolumineszensfolie 7 geeignet ist. Die Anschlußlitzen 8 der Elektrolumineszensfolie 7 werden durch einen bodenseitigen Durchbruch 5 der Schriftfeldkammer 4 in den Innnenraum des elektrischen Installationsgerätes geführt, wo sie mittels ihrer endseitigen Anschlußkontakte 9 auf entsprechende Kontakte des Geräteeinsatzes (siehe Fig. 3) gesteckt werden.In Fig. 1 is a view of the device cover of an electrical installation device shown. Device cover 3 is the device cover of a switch or surface-mounted push buttons. Along the top side edge of the device cover 3 extends a writing field chamber 4, which for receiving a Electroluminescent film 7 is suitable. The connecting strands 8 of the electroluminescent film 7 are through a bottom opening 5 of the title block chamber 4 in the Interior of the electrical installation device, where they by means of their end connection contacts 9 to corresponding contacts of the device insert (see Fig. 3) are inserted.

Die Elektrolumineszensfolie 7 wird mittels eines glasklaren Abdeckschildes 10 abgedeckt (diese dient als mechanische Schutzabdeckung), welches über mehrere, in entsprechende Rastausnehmungen der Schaltfeldkammer 4 eingreifende Rasthaken 11 auf der Oberseite des Gerätedeckels 3 befestigbar ist. Zweckmäßig wird eine in gewünschter Weise mit Buchstaben, Ziffern oder Symbolen gestaltete Beschriftungsfolie zwischen Abdeckschild 10 und Elektrolumineszensfolie 7 eingelegt.The electroluminescent film 7 is by means of a crystal-clear cover plate 10 covered (this serves as a mechanical protective cover), which over several, in corresponding latching recesses of the switchgear chamber chamber 4 engaging latch hooks 11 can be attached to the top of the device cover 3. Appropriately, one in designed with letters, numbers or symbols Labeling film inserted between cover plate 10 and electroluminescent film 7.

In Fig. 2 ist eine perspektivische Ansicht eines als Schalter ausgebildeten elektrischen Installationsgerätes dargestellt. Das elektrische Installationsgerät 1 in Aufputz-Ausführung besteht in allgemein bekannter Weise aus einer Gerätedose 2 und dem Gerätedeckel 3, welcher eine großflächige Schaltwippe 13 mit einem zentralen Feld für eine Kontrollbeleuchtung 14 besitzt. Längs der oberen Seitenkante des Gerätedeckels 3 erstreckt sich das beleuchtete Schriftfeld 6 mit Schriftfeldkammer 4 und Elektrolumineszensfolie 7.2 is a perspective view of an electrical switch Installation device shown. The electrical installation device 1 in a surface-mounted version consists in a generally known manner from a device box 2 and the Device cover 3, which has a large rocker switch 13 with a central field for has a control light 14. Along the upper side edge of the device cover 3 extends the illuminated text field 6 with text field chamber 4 and Electroluminescent film 7.

In Fig. 3 ist eine Sicht in ein seitlich aufgeschnittenes elektrisches Installationsgerät 1 dargestellt, bestehend aus Gerätedose 2, Gerätedeckel 3 (inklusive Schaltwippe 13) und Geräteeinsatz 12, hier als Schalter-Einsatz ausgebildet. Insbesondere ist zu erkennen, daß die Anschlußlitzen 8 der Elektrolumineszensfolie 7 über die Durchbrüche 5 der Schriftfeldkammer 4 zu Anschlußkontakten des Geräteeinsatzes 12 geführt sind. Vorteilhaft eignet sich die Elektrolumineszensfolie 7 für den Direktanschluß an 230 Volt Anschlußspannung, so daß zusätzliche spannungsbegrenzende Bauteile - wie Vorwiderstände - vorteilhaft entfallen können.3 shows a view of an electrical installation device 1 cut open to the side shown, consisting of device socket 2, device cover 3 (including rocker switch 13) and device insert 12, here designed as a switch insert. In particular is too recognize that the connecting strands 8 of the electroluminescent film 7 via the openings 5 of the title block chamber 4 are led to connection contacts of the device insert 12. The electroluminescent film 7 is advantageously suitable for direct connection to 230 volts Connection voltage, so that additional voltage-limiting components - such as Series resistors - can advantageously be omitted.

Die Elektrolumineszensfolie 7 ist schichtförmig aufgebaut, bestehend aus Frontelektrode aus transparentem Material, Leuchtstoff, Isolation und Rückenelektrode aus nicht transparentem Material, wobei die Anschlußlitzen mit der Frontelektrode und der Rückenelektrode verbunden sind und die elektrische Spannung zwischen Frontelektrode und Rückenelektrode angelegt wird. Der Lichteffekt beruht auf einem Halbleiterphänomen: Durch das elektrische Feld zwischen Frontelektrode und Rückenelektrode werden Elektronen des Leuchtstoffes in ein höheres Energieniveau gehoben und rekombinieren im sichtbaren Bereich. Das produzierte Licht ist schmalbandig, beinahe monochromatisch und absolut gleichmäßig.The electroluminescent film 7 is constructed in a layered manner, consisting of Front electrode made of transparent material, fluorescent material, insulation and back electrode made of non-transparent material, the connecting strands with the front electrode and the back electrode are connected and the electrical voltage between Front electrode and back electrode is applied. The light effect is based on one Semiconductor phenomenon: Due to the electric field between the front electrode and Back electrodes become electrons of the phosphor in a higher energy level lifted and recombine in the visible range. The light produced is narrow-band, almost monochromatic and absolutely even.

Claims (1)

Beschriftungsfeldbeleuchtung eines einen Gerätedeckel (3) und einen Geräteeinsatz (12) aufweisenden elektrischen Installationsgerätes (1), wobei eine Beschriftungsfolie unterhalb eines Abdeckschildes (10) eingelegt ist dadurch gekennzeichnet, dass sich längs einer Seitenkante des Gerätedeckels (3) ein aus einer Schriftfeldkammer (4) mit darin eingelegter Elektrolumineszensfolie (7) bestehendes befeuchtetes Schriftfeld (6) erstreckt, dass die Elektrolumineszensfolie (7) mit dem Abdeckschild (10) abgedeckt ist, welches mittels Rasthaken (11) mit der Schriftfeldkammer (4) verbunden ist und dass die Schriftfeldkammer (4) einen Durchbruch (5) zur Durchführung von Anschlußlitzen (8) der Elektrolumineszensfolie (7) zum Geräteeinsatz (12) aufweist, wobei eine elektrische Kontaktierung über Anschlußkontakte (9) am Geräteeinsatz (12) erfolgt. Labeling field lighting of an electrical installation device (1) having a device cover (3) and a device insert (12), a labeling film being inserted underneath a cover plate (10) , that a moistened text field (6) consisting of a text field chamber (4) with an electroluminescent film (7) inserted therein extends along a side edge of the device cover (3), that the electroluminescent film (7) is covered with the cover plate (10) which is connected to the writing field chamber (4) by means of latching hooks (11) and that the writing field chamber (4) has an opening (5) for the passage of connecting strands (8) of the electroluminescent film (7) to the device insert (12), electrical contact being made via connection contacts (9) on the device insert (12).
EP03019906A 2002-10-04 2003-09-02 Illumination for the labelling area of an electrical apparatus Withdrawn EP1406275A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002146399 DE10246399B3 (en) 2002-10-04 2002-10-04 Writing field illumination for electrical installation device e.g. wall-mounted switch, uses electroluminescent foil positioned in writing field chamber below printed foil
DE10246399 2002-10-04

Publications (1)

Publication Number Publication Date
EP1406275A1 true EP1406275A1 (en) 2004-04-07

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ID=30469821

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EP03019906A Withdrawn EP1406275A1 (en) 2002-10-04 2003-09-02 Illumination for the labelling area of an electrical apparatus

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DE (1) DE10246399B3 (en)
PL (1) PL362544A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062039B3 (en) * 2004-06-12 2006-05-11 Albrecht Jung Gmbh & Co. Kg Electrical outlet
ITRM20050164A1 (en) * 2005-04-07 2006-10-08 Bticino Spa SUPPORT FRAME FOR ELECTRIC APPLIANCES.
DE102006017915B3 (en) * 2006-04-18 2007-08-02 Albrecht Jung Gmbh & Co. Kg Electric or electronic installation device for use in building system engineering, has covering frame and base fixed at supporting ring, illuminating device is fixed on base, and has printed circuit board with light emitting diode
DE202006006354U1 (en) * 2006-04-20 2007-08-30 Merten Gmbh & Co. Kg Electrical installation device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410344A1 (en) * 1984-03-21 1985-10-03 Gebrüder Merten GmbH & Co KG, 5270 Gummersbach Illuminated electrical installation apparatus
US5260530A (en) * 1990-03-12 1993-11-09 Tapeswitch Corporation Of America Illuminated, pressure-actuated switch
US20020056628A1 (en) * 2000-10-25 2002-05-16 Capella Joaquin Aubert Key or pushbutton assembly for an electric or electronic mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122118C2 (en) * 1991-07-04 1997-04-24 Abb Patent Gmbh Lettering field lighting
DE19737908A1 (en) * 1997-09-01 1999-03-04 Abb Patent Gmbh Electric key switch with text field
DE19914081A1 (en) * 1999-03-27 2000-09-28 Chrubasik Peter Electroluminescent light element comprises a front electrode which is individualized to a particular purpose and is covered with transparent cast resin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410344A1 (en) * 1984-03-21 1985-10-03 Gebrüder Merten GmbH & Co KG, 5270 Gummersbach Illuminated electrical installation apparatus
US5260530A (en) * 1990-03-12 1993-11-09 Tapeswitch Corporation Of America Illuminated, pressure-actuated switch
US20020056628A1 (en) * 2000-10-25 2002-05-16 Capella Joaquin Aubert Key or pushbutton assembly for an electric or electronic mechanism

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PL362544A1 (en) 2004-04-05
DE10246399B3 (en) 2004-02-19

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