GB1514172A - Road vehicle electrical systems - Google Patents

Road vehicle electrical systems

Info

Publication number
GB1514172A
GB1514172A GB21732/74A GB2173274A GB1514172A GB 1514172 A GB1514172 A GB 1514172A GB 21732/74 A GB21732/74 A GB 21732/74A GB 2173274 A GB2173274 A GB 2173274A GB 1514172 A GB1514172 A GB 1514172A
Authority
GB
United Kingdom
Prior art keywords
vehicle
lamps
switch
handbrake
closed
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
GB21732/74A
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB21732/74A priority Critical patent/GB1514172A/en
Publication of GB1514172A publication Critical patent/GB1514172A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/80—Circuits; Control arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

1514172 Vehicle electrical systems LUCAS ELECTRICAL LTD 2 May 1975 [16 May 1974] 21732/74 Heading H2H The interior lamp of a vehicle is arranged to remain illuminated for a predetermined time after a vehicle door has been closed only if the hand-brake is on. The interior lamps 28 of a road vehicle are connected to the vehicle battery 11 by way of a normally open contact 27 of a relay 24 and a switch 25 which is closed when the handbrake is on. Opening of a vehicle door closes a switch 16 or 17 causes the rapid charging of a capacitor 15 and the transistors 21, 22 turn on to energize the winding of the relay 24 to close contact 27 thereby illuminating the lamps 28 if the switch 25 is closed by the handbrake being on. Closure of the door opens the switch 16 or 17, the transistors 21, 22 then remain turned on by the discharge of the capacitor 15 for a period of say, 60 seconds, to maintain the illumination of the lamps 28 for that time. Should the handbrake be released, the lamps 28 will be extinguished.
GB21732/74A 1975-05-02 1975-05-02 Road vehicle electrical systems Expired GB1514172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB21732/74A GB1514172A (en) 1975-05-02 1975-05-02 Road vehicle electrical systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21732/74A GB1514172A (en) 1975-05-02 1975-05-02 Road vehicle electrical systems

Publications (1)

Publication Number Publication Date
GB1514172A true GB1514172A (en) 1978-06-14

Family

ID=10167895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21732/74A Expired GB1514172A (en) 1975-05-02 1975-05-02 Road vehicle electrical systems

Country Status (1)

Country Link
GB (1) GB1514172A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628345A1 (en) * 1986-08-21 1988-02-25 Bayerische Motoren Werke Ag Interior-lighting circuit
DE4134558A1 (en) * 1991-10-19 1993-04-22 Daimler Benz Ag Vehicle interior lighting circuit - prevents early extinction of interior light until safety switch contact for seat belt or handbrake is closed

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628345A1 (en) * 1986-08-21 1988-02-25 Bayerische Motoren Werke Ag Interior-lighting circuit
DE4134558A1 (en) * 1991-10-19 1993-04-22 Daimler Benz Ag Vehicle interior lighting circuit - prevents early extinction of interior light until safety switch contact for seat belt or handbrake is closed

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Legal Events

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