GB1499218A - Luminous key switches - Google Patents

Luminous key switches

Info

Publication number
GB1499218A
GB1499218A GB4351575A GB4351575A GB1499218A GB 1499218 A GB1499218 A GB 1499218A GB 4351575 A GB4351575 A GB 4351575A GB 4351575 A GB4351575 A GB 4351575A GB 1499218 A GB1499218 A GB 1499218A
Authority
GB
United Kingdom
Prior art keywords
light
cap
switch
oct
switches
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
Application number
GB4351575A
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.)
Dav SA
Original Assignee
Dav SA
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 Dav SA filed Critical Dav SA
Publication of GB1499218A publication Critical patent/GB1499218A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Push-Button Switches (AREA)

Abstract

1499218 Illuminated switches DAV 23 Oct 1975 [23 Oct 1974] 43515/75 Heading H1N A switch unit for the instrument panel of an automobile comprises an opaque housing 1 containing a number of switches 2, each switch 2 comprising contacts (not shown) on a slider 11 and on a casing 4 together with a transparent methyl methacrylate plastics light transmitter body 26 interposed between a 1 watt red or amber warning light 17 and the translucent or transparent cap 23 of the press-button key 15, the body 26 having a concave recess 21 to accommodate the top of light 17. The housing 1 contains a 3 watt green panel light 32 and has an internal surface of high reflectivity such as white paint. Warning light 17 shows when the switch is on, the body 26 being shaped to concentrate the light on the cap 23, while the cap can be seen by light from 32 when the switch is off. The cap 23 may be detachable and carry a symbol indicating the function of the switch. In an alternative embodiment (not shown) the cap 23 is replaced by the outer surface of body 26 which is then ground or frosted.
GB4351575A 1974-10-23 1975-10-23 Luminous key switches Expired GB1499218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7435521A FR2289044A1 (en) 1974-10-23 1974-10-23 LUMINOUS BUTTON ELECTRIC SWITCH

Publications (1)

Publication Number Publication Date
GB1499218A true GB1499218A (en) 1978-01-25

Family

ID=9144377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4351575A Expired GB1499218A (en) 1974-10-23 1975-10-23 Luminous key switches

Country Status (2)

Country Link
FR (1) FR2289044A1 (en)
GB (1) GB1499218A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825833A1 (en) * 1978-06-13 1979-12-20 Standard Elektrik Lorenz Ag Signal switch or push-button illuminated by LED - has transparent cover over LED to collimate light for even distribution at outer surface
GB2158647A (en) * 1984-04-02 1985-11-13 Philips Nv Coffee maker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758701A (en) * 1984-03-14 1988-07-19 Allen-Bradley Company Indicator light assembly for control panel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB629997A (en) * 1947-10-10 1949-10-03 Standard Telephones Cables Ltd Improvements in or relating to switching keys having indicator lamps
DE1765641A1 (en) * 1968-06-22 1971-09-02 Bosch Gmbh Robert Switches, especially for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825833A1 (en) * 1978-06-13 1979-12-20 Standard Elektrik Lorenz Ag Signal switch or push-button illuminated by LED - has transparent cover over LED to collimate light for even distribution at outer surface
GB2158647A (en) * 1984-04-02 1985-11-13 Philips Nv Coffee maker

Also Published As

Publication number Publication date
FR2289044A1 (en) 1976-05-21
FR2289044B1 (en) 1978-12-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee