US3144643A - Push-button illuminating device - Google Patents

Push-button illuminating device Download PDF

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Publication number
US3144643A
US3144643A US151220A US15122061A US3144643A US 3144643 A US3144643 A US 3144643A US 151220 A US151220 A US 151220A US 15122061 A US15122061 A US 15122061A US 3144643 A US3144643 A US 3144643A
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United States
Prior art keywords
push
button
lamp
light
illuminated
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Expired - Lifetime
Application number
US151220A
Inventor
Andersson Percy Hugo Anders
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.)
Svenska AB Gasaccumulator
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Svenska AB Gasaccumulator
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
    • 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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/06—Reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H01H2219/0622—Light conductor only an illuminated ring around keys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S116/00—Signals and indicators
    • Y10S116/28—Push button structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/47—Light guides for switch indicators, e.g. prisms, reflectors or cables

Definitions

  • the invention relates to an arrangement comprising a push-button and in which the push-button is adapted to be illuminated by a lamp forming part of the arrangement.
  • This type of illuminated push-button may be used within various technical fields, for instance in circuit breakers, radio apparatus and the like.
  • the following description of the invention is therefore not directed to any special field of application for the push-button but refers only to the push-button proper with its illuminating device.
  • the invention is based on the assumption that the pushbutton is made of translucent material, a lamp for illuminating it being placed on the side of the push-button.
  • the push-button is arranged relative to the lamp and a screening member surrounding the push-button in such a manner that the signal image created on thefree end surface of the push-button by the illumination changes when the push-button is pressed owing to the axial displacement thereof within the screening member.
  • FIG. 1 shows a pair of pushbuttons, one of which is assumed to be in the operative and the other in the inoperative position.
  • FIG. 2 shows an example of the signal image that can be produced by one of the push-buttons.
  • 1 designates a panel, which serves in the present case as screening member, a pair of pushbuttons 2 and 3 being arranged axially displaceable in the panel.
  • the push-buttons may be urged by springs or similar members towards the outer position, a spring 4 of this type being shown by way of example on the drawing.
  • a flange 5 formed on the push-buttons may be adapted to limit their displacement in one direction; other means that may be of a similar nature but not shown on the drawing can be used for limiting displacement of of the push-buttons in the other direction.
  • a lamp 6 is provided for illumination on the push-buttons and it is assumed in the present case that the light of the lamp is conducted to the push-buttons through a disc 7 of the translucent material. This material, as that of the pushbuttons 2 and 3, may be of plexiglass.
  • the free end of the push-buttons is coated with an opaque layer 8, this layer being broken through in a suitable manner, as indicated in FIG. 2, to form a suitable sign on the free end of the push-button.
  • the central portion of the free end is illuminated by the lamp 6 through light from the lamp being reflected at a reflecting surface 9 which is provided in a notch 10 formed on the push-button.
  • the notch is arranged in such a way that the reflecting surface 9 is constantly illuminated by the lamp 6, whether the push-button is in its operative or in its inoperative posi tion.
  • the sign formed in the layer 8 will therefore be constantly illuminated.
  • the layer 8 extends outwardly to an annular, uncoated portion 11 of the free end of the push-button.
  • This annular portion 11 is adapted to be illuminated by the lamp when the push-button is in its inner position, the light from the lamp being then reflected at a surface 12.
  • This surface is arranged relative to the panel 1, which forms the screening member in such a way as to be cut off from the supply of light when the push-button is in its outer position, as shown on the drawing in the case of the push-button 3.
  • the boundary layer 13 between the central portion of the push-button and the mantle-like portion is assumed to have the property of not letting through the light. It is possible to have several lamps adapted for illuminating the push-buttons from different directions, however, in the majority of cases this will not be necessary owing to the good light-scattering properties of the plexiglass.
  • the sign formed on the push-buttons is constantly illuminated, whereas the sign of the push-button that is at the moment in its operative position is surrounded by an illuminated ring.
  • Such a construction is of particular advantage for the controls of electronic air-craft equipment, since the strength of the illumination of the pushbuttons may be adjusted so as not to dazzle the pilot at the same time as he obtains, owing to the illuminated ring, an immediate and positive indication of which pushbutton is actuated.
  • Push-button assembly including a push-button of light transmitting material having a visible end and being axially displaceable in a housing comprising a screening member surrounding a part of the push-button, a lamp disposed laterally of the push-button, said push-button having light reflecting surfaces located at at least two axially displaced positions of the push-button for reflecting light from the lamp to mutually different parts of the visible end of the push-button, a first one of said reflecting surfaces being illuminated by the lamp in a first position of the push-button and being shielded from the lamp by the screening member in a second position of the push-button, the second reflecting surface being constantly illuminated in both positions of the pushbutton.
  • Push-button assembly as defined in claim 1 wherein a first surface part of said visible end, which is illuminated by said reflecting surface in said first position of the pushbutton, forms a ring surrounding a second surface part of said visible end, which is constantly illuminated by said second reflecting surface.
  • Push-button assembly as defined in claim 2 wherein said second surface part of said visible end is coated with a layer of opaque material, markings being formed through said opaque layer.
  • Push-button assembly as defined in claim 1 wherein a boundary layer inside the push-button separates one light channel comprising said first reflecting surface and said first surface part of said visible end from the rest of the push-button.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Aug. 1 1, 1964 P. H. A. ANDERBSON PUSH-BUTTON ILLUMINATING DEVICE Filed Nov. 9. 1961 INVENTOR Percy Hugo A. Andersson BY ozzgyaq Q ATTORNEYS United States Patent 3,144,643 PUSH-BUTTON ILLUR HNATING DEVICE Percy Hugo Anders Andersson, Enebyberg, Sweden, as-
signor to Svenska Aktiebolaget Gasaccumulator, Lidingo, Sweden, a corporation of Sweden Filed Nov. 9, 1961, Ser. No. 151,220 Claims priority, application Sweden Dec. 10, 1960 4 Claims. (Cl. 346-380) The invention relates to an arrangement comprising a push-button and in which the push-button is adapted to be illuminated by a lamp forming part of the arrangement.
This type of illuminated push-button may be used within various technical fields, for instance in circuit breakers, radio apparatus and the like. The following description of the invention is therefore not directed to any special field of application for the push-button but refers only to the push-button proper with its illuminating device.
The invention is based on the assumption that the pushbutton is made of translucent material, a lamp for illuminating it being placed on the side of the push-button.
According to the invention the push-button is arranged relative to the lamp and a screening member surrounding the push-button in such a manner that the signal image created on thefree end surface of the push-button by the illumination changes when the push-button is pressed owing to the axial displacement thereof within the screening member.
On the annexed drawing, FIG. 1 shows a pair of pushbuttons, one of which is assumed to be in the operative and the other in the inoperative position. FIG. 2 shows an example of the signal image that can be produced by one of the push-buttons.
In the drawing, 1 designates a panel, which serves in the present case as screening member, a pair of pushbuttons 2 and 3 being arranged axially displaceable in the panel. The push-buttons may be urged by springs or similar members towards the outer position, a spring 4 of this type being shown by way of example on the drawing. A flange 5 formed on the push-buttons may be adapted to limit their displacement in one direction; other means that may be of a similar nature but not shown on the drawing can be used for limiting displacement of of the push-buttons in the other direction. A lamp 6 is provided for illumination on the push-buttons and it is assumed in the present case that the light of the lamp is conducted to the push-buttons through a disc 7 of the translucent material. This material, as that of the pushbuttons 2 and 3, may be of plexiglass.
In the present case it is assumed that the free end of the push-buttons is coated with an opaque layer 8, this layer being broken through in a suitable manner, as indicated in FIG. 2, to form a suitable sign on the free end of the push-button. The central portion of the free end is illuminated by the lamp 6 through light from the lamp being reflected at a reflecting surface 9 which is provided in a notch 10 formed on the push-button. The notch is arranged in such a way that the reflecting surface 9 is constantly illuminated by the lamp 6, whether the push-button is in its operative or in its inoperative posi tion. The sign formed in the layer 8 will therefore be constantly illuminated.
ice
In the present case the layer 8 extends outwardly to an annular, uncoated portion 11 of the free end of the push-button. This annular portion 11 is adapted to be illuminated by the lamp when the push-button is in its inner position, the light from the lamp being then reflected at a surface 12. This surface is arranged relative to the panel 1, which forms the screening member in such a way as to be cut off from the supply of light when the push-button is in its outer position, as shown on the drawing in the case of the push-button 3. The boundary layer 13 between the central portion of the push-button and the mantle-like portion is assumed to have the property of not letting through the light. It is possible to have several lamps adapted for illuminating the push-buttons from different directions, however, in the majority of cases this will not be necessary owing to the good light-scattering properties of the plexiglass.
As a consequence of the construction described for the push-buttons and the illuminating device, the sign formed on the push-buttons is constantly illuminated, whereas the sign of the push-button that is at the moment in its operative position is surrounded by an illuminated ring. Such a construction is of particular advantage for the controls of electronic air-craft equipment, since the strength of the illumination of the pushbuttons may be adjusted so as not to dazzle the pilot at the same time as he obtains, owing to the illuminated ring, an immediate and positive indication of which pushbutton is actuated.
What is claimed is:
l. Push-button assembly including a push-button of light transmitting material having a visible end and being axially displaceable in a housing comprising a screening member surrounding a part of the push-button, a lamp disposed laterally of the push-button, said push-button having light reflecting surfaces located at at least two axially displaced positions of the push-button for reflecting light from the lamp to mutually different parts of the visible end of the push-button, a first one of said reflecting surfaces being illuminated by the lamp in a first position of the push-button and being shielded from the lamp by the screening member in a second position of the push-button, the second reflecting surface being constantly illuminated in both positions of the pushbutton.
2. Push-button assembly as defined in claim 1 wherein a first surface part of said visible end, which is illuminated by said reflecting surface in said first position of the pushbutton, forms a ring surrounding a second surface part of said visible end, which is constantly illuminated by said second reflecting surface.
3. Push-button assembly as defined in claim 2 wherein said second surface part of said visible end is coated with a layer of opaque material, markings being formed through said opaque layer.
4. Push-button assembly as defined in claim 1 wherein a boundary layer inside the push-button separates one light channel comprising said first reflecting surface and said first surface part of said visible end from the rest of the push-button.
References Cited in the file of this patent UNITED STATES PATENTS 2,585,503 Schulze Feb. 12, 1952

Claims (1)

1. PUSH-BUTTON ASSEMBLY INCLUDING A PUSH-BUTTON OF LIGHT TRANSMITTING MATERIAL HAVING A VISIBLE END AND BEING AXIALLY DISPLACEABLE IN A HOUSING COMPRISING A SCREENING MEMBER SURROUNDING A PART OF THE PUSH-BUTTON, A LAMP DISPOSED LATERALLY OF THE PUSH-BUTTON, SAID PUSH-BUTTON HAVING LIGHT REFLECTING SURFACES LOCATED AT LEAST TWO AXIALLY DISPLACED POSITIONS OF THE PUSH-BUTTON FOR REFLECTING LIGHT FROM THE LAMP TO MUTUALLY DIFFERENT PARTS OF THE VISIBLE END OF THE PUSH-BUTTON, A FIRST ONE OF SAID REFLECTING SURFACES BEING ILLUMINATED BY THE LAMP IN A FIRST POSITION OF THE PUSH-BUTTON AND BEING SHIELDED FROM THE LAMP BY THE SCREENING MEMBER IN A SECOND POSITION
US151220A 1960-12-10 1961-11-09 Push-button illuminating device Expired - Lifetime US3144643A (en)

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377452A (en) * 1966-05-09 1968-04-09 Swf Spezialfabrik Fur Autozuhe Lighting or illuminating device for switches
US3601567A (en) * 1969-09-10 1971-08-24 Globe Union Inc Illuminated button switch construction
US3619591A (en) * 1970-02-19 1971-11-09 Gen Dynamics Corp Illuminated pushbuttons using piped light
US3632938A (en) * 1970-03-25 1972-01-04 Motorola Inc Pushbutton switch assembly
US3676689A (en) * 1970-12-30 1972-07-11 Ibm Optical code generating apparatus
US3717402A (en) * 1968-12-16 1973-02-20 Canadian Patents Dev Light collector for gamma ray cameras
JPS5046197U (en) * 1973-08-25 1975-05-08
US3895204A (en) * 1972-05-06 1975-07-15 Lucas Electrical Co Ltd Electrical switches
US4071726A (en) * 1975-02-11 1978-01-31 Lucas Electrical Company, Limited Electrical switch having actuator light transmissive region, intermediate lens and light source
JPS5387880U (en) * 1976-12-21 1978-07-19
US4104981A (en) * 1975-09-10 1978-08-08 Nissan Motor Company, Ltd. Indicator using changeable path through transparent material
JPS5463280A (en) * 1978-09-27 1979-05-22 Hitachi Ltd Thin type pushhbutton
JPS56117434U (en) * 1980-02-08 1981-09-08
FR2483679A1 (en) * 1980-05-30 1981-12-04 Westinghouse Electric Corp ELECTRICAL SWITCHING DEVICE COMPRISING AN OPERATING CONDITION INDICATOR DEVICE
US4343975A (en) * 1979-12-07 1982-08-10 Shin-Etsu Polymer Co., Ltd. Key board switch unit with illumination
JPS60174028U (en) * 1984-04-19 1985-11-18 株式会社東海理化電機製作所 Illuminated switch-on display
JPS6176633U (en) * 1984-10-26 1986-05-23
US4670633A (en) * 1983-10-19 1987-06-02 Matsushita Electric Industrial Co., Ltd. Keyboard assembly with lighting
DE3601941A1 (en) * 1986-01-23 1987-07-30 Norbert Just Display device for an electromagnetic relay
US4710602A (en) * 1986-02-03 1987-12-01 General Motors Corporation Illuminated rocker switch assembly
US4772769A (en) * 1987-02-06 1988-09-20 Burr-Brown Corporation Apparatus for selective backlighting of keys of a keyboard
US4776120A (en) * 1984-05-29 1988-10-11 Kabushiki Kaisha Toshiba Display device for telephone or a similar electric appliance
US4792884A (en) * 1987-10-19 1988-12-20 Prince Corporation Illuminated vanity mirror visor
US4924044A (en) * 1986-04-30 1990-05-08 Kabushiki Kaisha Toshiba Light emitting push button switch for an electronic apparatus
US4993808A (en) * 1988-05-18 1991-02-19 U.S. Philips Corporation Directed optical signaling
US5027103A (en) * 1988-06-25 1991-06-25 Dr. Ing. H.C.F. Porsche Ag Arrangement for visually indicating the readiness of a vehicle alarm system
US5451732A (en) * 1992-09-21 1995-09-19 Societe De Telecommunications, Electronique Aeronautique Et Maritime (Team) Selection and/or adjustment button, in particular for a front panel on board an aircraft
US5510782A (en) * 1992-08-03 1996-04-23 Itt Corporation Back lit keypad
WO2005090668A2 (en) * 2004-03-15 2005-09-29 BSH Bosch und Siemens Hausgeräte GmbH Module for displaceably mounting in a holding space of a domestic appliance and domestic appliance comprising this module
WO2006040581A1 (en) * 2004-10-15 2006-04-20 Gamesman Limited Push button assembly
US20070153528A1 (en) * 2005-12-30 2007-07-05 Hon Hai Precision Industry Co., Ltd. Front panel of computer system with light-reflecting member

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DE1765678B1 (en) * 1968-06-28 1972-06-08 Siemens Ag ILLUMINATED BUTTON
DE2540945C3 (en) * 1975-09-13 1983-04-28 Schoeller & Co Elektrotechnische Fabrik Gmbh & Co, 6000 Frankfurt Push button assembly
US4124879A (en) * 1977-05-20 1978-11-07 Motorola, Inc. Illumination apparatus for use in an illuminatable pushbutton keyset and the like
DE7814996U1 (en) * 1978-05-18 1979-10-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen Push button switch
DE2936192C2 (en) * 1979-09-07 1981-10-22 Daimler-Benz Ag, 7000 Stuttgart Illuminable pushbuttons, in particular for motor vehicles
JPS59139510A (en) * 1983-01-28 1984-08-10 寺崎電気産業株式会社 Display unit for electric switch
DE3346485A1 (en) * 1983-12-22 1985-07-04 Siemens AG, 1000 Berlin und 8000 München KEY COVER FOR A KEYBOARD ARRANGED IN A HOUSING
DE8423758U1 (en) * 1984-08-10 1984-11-15 Standard Elektrik Lorenz Ag, 7000 Stuttgart Pushbutton switch with step switch
DE3511496A1 (en) * 1985-03-29 1986-10-09 Telefunken electronic GmbH, 7100 Heilbronn Key-switching device having a transparent covering film
US5521345A (en) * 1994-09-30 1996-05-28 Tokheim Corporation Backlit membrane keypad
EP0917409B1 (en) 1997-11-17 2005-03-16 Molex Incorporated Electroluminescent lamp and method of fabrication
CN104713191A (en) * 2013-12-17 2015-06-17 法雷奥汽车内部控制（深圳）有限公司 Control mechanism
DE102018221841A1 (en) * 2018-12-14 2020-06-18 Volkswagen Aktiengesellschaft Illuminated display device

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US2585503A (en) * 1950-11-29 1952-02-12 Hotpoint Inc Selector switch signaling system for electric ranges and the like

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DE719951C (en) * 1939-10-08 1942-04-20 Telefunken Gmbh Radio with push button operation
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US2585503A (en) * 1950-11-29 1952-02-12 Hotpoint Inc Selector switch signaling system for electric ranges and the like

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377452A (en) * 1966-05-09 1968-04-09 Swf Spezialfabrik Fur Autozuhe Lighting or illuminating device for switches
US3717402A (en) * 1968-12-16 1973-02-20 Canadian Patents Dev Light collector for gamma ray cameras
US3601567A (en) * 1969-09-10 1971-08-24 Globe Union Inc Illuminated button switch construction
US3619591A (en) * 1970-02-19 1971-11-09 Gen Dynamics Corp Illuminated pushbuttons using piped light
US3632938A (en) * 1970-03-25 1972-01-04 Motorola Inc Pushbutton switch assembly
US3676689A (en) * 1970-12-30 1972-07-11 Ibm Optical code generating apparatus
US3895204A (en) * 1972-05-06 1975-07-15 Lucas Electrical Co Ltd Electrical switches
JPS5710024Y2 (en) * 1973-08-25 1982-02-26
JPS5046197U (en) * 1973-08-25 1975-05-08
US4071726A (en) * 1975-02-11 1978-01-31 Lucas Electrical Company, Limited Electrical switch having actuator light transmissive region, intermediate lens and light source
US4104981A (en) * 1975-09-10 1978-08-08 Nissan Motor Company, Ltd. Indicator using changeable path through transparent material
JPS5387880U (en) * 1976-12-21 1978-07-19
JPS5463280A (en) * 1978-09-27 1979-05-22 Hitachi Ltd Thin type pushhbutton
JPS5718286B2 (en) * 1978-09-27 1982-04-15
US4343975A (en) * 1979-12-07 1982-08-10 Shin-Etsu Polymer Co., Ltd. Key board switch unit with illumination
JPS56117434U (en) * 1980-02-08 1981-09-08
FR2483679A1 (en) * 1980-05-30 1981-12-04 Westinghouse Electric Corp ELECTRICAL SWITCHING DEVICE COMPRISING AN OPERATING CONDITION INDICATOR DEVICE
US4670633A (en) * 1983-10-19 1987-06-02 Matsushita Electric Industrial Co., Ltd. Keyboard assembly with lighting
JPS60174028U (en) * 1984-04-19 1985-11-18 株式会社東海理化電機製作所 Illuminated switch-on display
US4776120A (en) * 1984-05-29 1988-10-11 Kabushiki Kaisha Toshiba Display device for telephone or a similar electric appliance
JPS6176633U (en) * 1984-10-26 1986-05-23
DE3601941A1 (en) * 1986-01-23 1987-07-30 Norbert Just Display device for an electromagnetic relay
US4710602A (en) * 1986-02-03 1987-12-01 General Motors Corporation Illuminated rocker switch assembly
US4924044A (en) * 1986-04-30 1990-05-08 Kabushiki Kaisha Toshiba Light emitting push button switch for an electronic apparatus
US4772769A (en) * 1987-02-06 1988-09-20 Burr-Brown Corporation Apparatus for selective backlighting of keys of a keyboard
US4792884A (en) * 1987-10-19 1988-12-20 Prince Corporation Illuminated vanity mirror visor
US4993808A (en) * 1988-05-18 1991-02-19 U.S. Philips Corporation Directed optical signaling
US5027103A (en) * 1988-06-25 1991-06-25 Dr. Ing. H.C.F. Porsche Ag Arrangement for visually indicating the readiness of a vehicle alarm system
US5510782A (en) * 1992-08-03 1996-04-23 Itt Corporation Back lit keypad
US5451732A (en) * 1992-09-21 1995-09-19 Societe De Telecommunications, Electronique Aeronautique Et Maritime (Team) Selection and/or adjustment button, in particular for a front panel on board an aircraft
WO2005090668A2 (en) * 2004-03-15 2005-09-29 BSH Bosch und Siemens Hausgeräte GmbH Module for displaceably mounting in a holding space of a domestic appliance and domestic appliance comprising this module
WO2005090668A3 (en) * 2004-03-15 2006-05-04 Bsh Bosch Siemens Hausgeraete Module for displaceably mounting in a holding space of a domestic appliance and domestic appliance comprising this module
WO2006040581A1 (en) * 2004-10-15 2006-04-20 Gamesman Limited Push button assembly
US20080000763A1 (en) * 2004-10-15 2008-01-03 James Cove Push Button Assembly
AU2005293311B2 (en) * 2004-10-15 2010-10-21 Gamesman Limited Push button assembly
US20070153528A1 (en) * 2005-12-30 2007-07-05 Hon Hai Precision Industry Co., Ltd. Front panel of computer system with light-reflecting member

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Publication number Publication date
GB1002157A (en) 1965-08-25
DE1221707B (en) 1966-07-28

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