DE3541776A1 - Optical display device for electrical equipment - Google Patents

Optical display device for electrical equipment

Info

Publication number
DE3541776A1
DE3541776A1 DE19853541776 DE3541776A DE3541776A1 DE 3541776 A1 DE3541776 A1 DE 3541776A1 DE 19853541776 DE19853541776 DE 19853541776 DE 3541776 A DE3541776 A DE 3541776A DE 3541776 A1 DE3541776 A1 DE 3541776A1
Authority
DE
Germany
Prior art keywords
display device
optical display
emitting diode
light
keys
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Withdrawn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
DE19853541776
Other languages
German (de)
Inventor
Erwin Dipl Ing Awakowicz
Peter Dipl Ing Kleine
Kurt Schiller
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19853541776 priority Critical patent/DE3541776A1/en
Publication of DE3541776A1 publication Critical patent/DE3541776A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • H05K1/0256—Electrical insulation details, e.g. around high voltage areas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10621—Components characterised by their electrical contacts
    • H05K2201/10651—Component having two leads, e.g. resistor, capacitor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/28—Applying non-metallic protective coatings
    • H05K3/284—Applying non-metallic protective coatings for encapsulating mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The invention particularly concerns LEDs (2), which are arranged, together with keys, on a printed circuit board (1), and shine through openings (7, 8) in a housing (9). The object is good protection against contact voltages. For this purpose, the LED (2), together with its electrical terminals, is at least partly surrounded by silicone rubber (6), which is part of the contact mat (3) for the keys (5). <IMAGE>

Description

Die Erfindung beinhaltet eine optische Anzeigevorrichtung für elektrische Geräte, insbesondere für gemeinsam mit Tasten auf einer Leiterplatte angeordnete, in Ausnehmun­ gen eines Gehäuses strahlende Leuchtdioden, wobei die Ta­ sten auf eine Kontaktmatte einwirken.The invention includes an optical display device for electrical devices, especially for together with Keys arranged on a circuit board, in exception against a housing shining LEDs, the Ta act on a contact mat.

Aufgrund der immer empfindlicher werdenden elektrischen Bauelemente ist es erforderlich, diese Bauelemente vor zu hohen Berührungsspannungen zu schützen, um diese vor Zer­ störung zu bewahren. Dabei ist meist eine Störfestigkeit von < 15 kV nötig.Because of the increasingly sensitive electrical Components, it is necessary to before these components to protect high touch voltages to protect them from Zer to preserve interference. There is usually interference immunity of <15 kV necessary.

Es ist bekannt, zu diesem Zweck die Leuchtdioden mit ei­ ner Kappe zu versehen, die aus einem glasklaren Kunst­ stoff besteht. Weiterhin ist es bekannt, die Leuchtdioden unter Abdeckblenden anzuordnen.It is known for this purpose that the LEDs with egg ner cap to be made from a crystal clear art fabric exists. Furthermore, it is known the light emitting diodes to be arranged under cover panels.

Bei der erstgenannten Ausführung ist ein zusätzliches Teil erforderlich, das die Herstellungskosten erhöht. Bei der Verwendung von Abdeckblenden sind unter anderem große Luftstrecken erforderlich, um die notwendige hohe Störfe­ stigkeit zu erzielen.In the former version, there is an additional one Part required that increases manufacturing costs. At the use of cover panels are great among others Clearances required to the necessary high Störfe to achieve stability.

Aufgabe der Erfindung ist es, eine Lösung anzugeben, die bei maximaler Lichtausbeute einen optimalen Schutz gegen hohe Berührungsspannungen garantiert.The object of the invention is to provide a solution that with maximum light output, optimal protection against high contact voltages guaranteed.

Diese Aufgabe wird dadurch gelöst, daß die Leuchtdiode zumindest teilweise von einem Isolierstoff umhüllt ist, wobei der Isolierstoff Teil der Kontaktmatte ist. This object is achieved in that the light emitting diode is at least partially covered by an insulating material, the insulating material being part of the contact mat.  

Dadurch, daß die Leuchtdiode zumindest von einem Teil der Kontaktmatte fest umhüllt wird, ist gewährleistet, daß zwischen den genannten Teilen kein Potentialgefälle und somit keine Überspannungen auftreten können. Dadurch kön­ nen in einfacher Weise empfindliche, auf der Leiterplatte angeordnete Bauteile, wie z. B. Chips, vor unerwünschter statischer Aufladung durch die Bedienungsperson geschützt werden.The fact that the light emitting diode of at least part of the Contact mat is wrapped tightly, it is ensured that no potential gradient between the parts mentioned and thus no overvoltages can occur. This allows sensitive in a simple way, on the circuit board arranged components, such as. B. chips from unwanted static charge protected by the operator will.

Gemäß einer bevorzugten Ausführungsform umgibt der Iso­ lierstoff die Leuchtdiode mit Ausnahme des Abstrahlungs­ bereiches. Dadurch kann bei größtmöglicher Lichtausbeute ein maximaler Berührungsschutz erzielt werden.According to a preferred embodiment, the iso surrounds The light emitting diode with the exception of the radiation area. This allows the greatest possible light output maximum protection against contact can be achieved.

Die Erfindung soll im folgenden anhand eines Ausführungs­ beispiels näher erläutert werden.The invention is based on an embodiment example are explained in more detail.

Die Abbildung zeigt eine teilweise geschnittene Seitenan­ sicht einer mit einer optischen Anzeigevorrichtung verse­ henen Tastatur für nachrichtentechnische Endgeräte.The illustration shows a partially cut side view of a verse with an optical display device keyboard for telecommunications devices.

Mit den Leiterbahnen einer Leiterplatte 1 ist eine Leuchtdiode 2 mittels Löten elektrisch und mechanisch verbunden. Auf dieser Leiterplatte 1 liegt eine Kontakt­ matte 3 auf, die im Bereich der Taste 5 mit einem Hubbalg 4 versehen ist und die im Bereich der Leuchtdiode 2 eine zylinderförmige Ausstülpung 6 aufweist. Diese Ausstülpung 6 ist so bemessen, daß ihre lichte Weite etwas geringer ist als der Außendurchmesser der Leuchtdiode 2, so daß stets eine feste Anlage des Endbereiches der Ausstülpung an der Leuchtdiode gewährleistet ist.A light-emitting diode 2 is electrically and mechanically connected to the conductor tracks of a printed circuit board 1 by means of soldering. On this circuit board 1 there is a contact mat 3 , which is provided with a bellows 4 in the area of the button 5 and which has a cylindrical protuberance 6 in the area of the light-emitting diode 2 . This protuberance 6 is dimensioned such that its inside width is somewhat smaller than the outside diameter of the light-emitting diode 2 , so that a firm contact of the end region of the protuberance with the light-emitting diode is always ensured.

Sowohl die Taste 5 als auch der freie den Abstrahlungsbe­ reich bildende Teil der Leuchtdiode 2 ragen in Ausnehmun­ gen 7 und 8 des Gehäuses 9 hinein. Im Bereich der Leucht­ diode 2 ist die Ausnehmung des Gehäuses mit einer licht­ durchlässigen Abdeckblende 10 verschlossen. Both the key 5 and the free part of the light emitting diode 2, which forms a large region of radiation, protrude into recesses 7 and 8 of the housing 9 . In the area of the light-emitting diode 2 , the recess of the housing is closed with a light-permeable cover panel 10 .

  • Bezugszeichenliste  1 Leiterplatte
     2 Leuchtdiode
     3 Kontaktmatte
     4 Hubbalg
     5 Taste
     6 zylinderförmige Ausstülpung
     7 Ausnehmung
     8 Ausnehmung
     9 Gehäuse
    10 Abdeckblende     1 PCB
    2 LEDs
    3 contact mat
    4 bellows
    5 button
    6 cylindrical protuberance
    7 recess
    8 recess
    9 housing
    10 cover panel

Claims (2)

1. Optische Anzeigevorrichtung für elektrische Geräte, insbesondere für gemeinsam mit Tasten (5) auf einer Lei­ terplatte (1) angeordnete, in Ausnehmungen (8) eines Ge­ häuses (9) strahlende Leuchtdioden (2), wobei die Tasten (5) auf eine Kontaktmatte (3) einwirken, dadurch gekennzeichnet, daß die Leuchtdiode (2) zumindest teilweise von einem Isolierstoff (6) umhüllt ist, wobei der Isolierstoff Teil der Kontaktmatte (3) ist.1. Optical display device for electrical devices, in particular for together with keys ( 5 ) on a Lei terplatte ( 1 ) arranged in recesses ( 8 ) of a Ge housing ( 9 ) shining LEDs ( 2 ), the keys ( 5 ) on a Contact mat ( 3 ) act, characterized in that the light-emitting diode ( 2 ) is at least partially enveloped by an insulating material ( 6 ), the insulating material being part of the contact mat ( 3 ). 2. Optische Anzeigevorrichtung nach Anspruch 1, da­ durch gekennzeichnet, daß der Iso­ lierstoff (6) die Leuchtdiode (2) mit Ausnahme des Ab­ strahlungsbereiches umgibt.2. Optical display device according to claim 1, characterized in that the insulating material ( 6 ) surrounds the light-emitting diode ( 2 ) with the exception of the radiation area.
DE19853541776 1985-11-26 1985-11-26 Optical display device for electrical equipment Withdrawn DE3541776A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853541776 DE3541776A1 (en) 1985-11-26 1985-11-26 Optical display device for electrical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853541776 DE3541776A1 (en) 1985-11-26 1985-11-26 Optical display device for electrical equipment

Publications (1)

Publication Number Publication Date
DE3541776A1 true DE3541776A1 (en) 1987-05-27

Family

ID=6286883

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853541776 Withdrawn DE3541776A1 (en) 1985-11-26 1985-11-26 Optical display device for electrical equipment

Country Status (1)

Country Link
DE (1) DE3541776A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703591A1 (en) 1994-09-21 1996-03-27 Hewlett-Packard Company Input/output device with a lamp and a switch having protection against electrostatic discharge and contamination
EP0712224A2 (en) * 1990-02-15 1996-05-15 Hitachi Telecom Technologies, Ltd. Dealing board
US5776406A (en) * 1994-12-23 1998-07-07 Henkel Dommanditgesellschaft Auf Aktien Moldings of polyurethane hotmelt adhesives
DE19850153A1 (en) * 1998-10-30 2000-05-18 Siemens Ag Semiconductor circuit arrangement, in particular high-current converters with a low intermediate circuit voltage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320272A (en) * 1981-01-26 1982-03-16 Oak Industries Inc. Connector for attaching an electrical component to a flat sheet
DE3421319A1 (en) * 1984-06-08 1985-12-12 Borg Instruments GmbH, 7537 Remchingen Pushbutton with a rubber mat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320272A (en) * 1981-01-26 1982-03-16 Oak Industries Inc. Connector for attaching an electrical component to a flat sheet
DE3421319A1 (en) * 1984-06-08 1985-12-12 Borg Instruments GmbH, 7537 Remchingen Pushbutton with a rubber mat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712224A2 (en) * 1990-02-15 1996-05-15 Hitachi Telecom Technologies, Ltd. Dealing board
EP0712224A3 (en) * 1990-02-15 1996-09-11 Hitachi Telecomm Tech Dealing board
EP0703591A1 (en) 1994-09-21 1996-03-27 Hewlett-Packard Company Input/output device with a lamp and a switch having protection against electrostatic discharge and contamination
US5776406A (en) * 1994-12-23 1998-07-07 Henkel Dommanditgesellschaft Auf Aktien Moldings of polyurethane hotmelt adhesives
DE19850153A1 (en) * 1998-10-30 2000-05-18 Siemens Ag Semiconductor circuit arrangement, in particular high-current converters with a low intermediate circuit voltage
DE19850153B4 (en) * 1998-10-30 2005-07-21 Siemens Ag Semiconductor circuit arrangement, in particular high-current converter with low DC link voltage

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8130 Withdrawal