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GB1369815A - Lamp failure warning systems for road vehicles - Google Patents

Lamp failure warning systems for road vehicles

Info

Publication number
GB1369815A
GB1369815A GB1125271A GB1125271A GB1369815A GB 1369815 A GB1369815 A GB 1369815A GB 1125271 A GB1125271 A GB 1125271A GB 1125271 A GB1125271 A GB 1125271A GB 1369815 A GB1369815 A GB 1369815A
Authority
GB
United Kingdom
Prior art keywords
lamps
switch
circuit
relay
lamp
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
GB1125271A
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries 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 Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB1125271A priority Critical patent/GB1369815A/en
Publication of GB1369815A publication Critical patent/GB1369815A/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
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not

Landscapes

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

Abstract

1369815 Lamp failure indicators JOSEPH LUCAS (INDUSTRIES) Ltd 16 March 1972 [24 April 1971] 11252/71 Heading G4N In a lamp failure indicator for a road vehicle, a first switch 12 completes the circuit to a first set of lamps 17a... 17d and a second switch 14 completes a circuit to the second set of lamps 19a, 19b. A warning device 24 is connected in a circuit which is completed when either the first or the second switch is closed, a first shortcircuit path 18a ... 18d being included for bridging the warning device 24 when all the lamps of the first set are energized, a second shortcircuit path 22a, 22b bridging the warning device 24 when all the lamps 19a, 19b of the second set are energized and has means 27 for opening the first short-circuit path whenever the second switch 14 is closed. As described, when switch 12 is closed the vehicle lighting lamps 17a ... 17d of the first set are energized, energizing relays 16a ... 16d and also energizing relay 28 via diode 29. The failure of any lamp 17a ... 17d will open one of the relay contacts 18a ... 18d and remove the short-circuit from the warning lamp 24. Operation of the brakes closes second switch 14 to light the stop lamps 19a, 19b; diode 32 releases relay 28 so that no test is made of the vehicle lighting lamps 17a ... 17d during braking. Failure of one of the stop lamps 19a, 19b, however, releases the appropriate relay 21a, 21b and removes the short-circuit from the warning lamp 24 imposed by contacts 22a, 22b. In Fig. 2 (not shown) diodes 29, 32 are omitted and a differentially-wound relay 28 is employed.
GB1125271A 1972-03-16 1972-03-16 Lamp failure warning systems for road vehicles Expired GB1369815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1125271A GB1369815A (en) 1972-03-16 1972-03-16 Lamp failure warning systems for road vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1125271A GB1369815A (en) 1972-03-16 1972-03-16 Lamp failure warning systems for road vehicles

Publications (1)

Publication Number Publication Date
GB1369815A true GB1369815A (en) 1974-10-09

Family

ID=9982820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1125271A Expired GB1369815A (en) 1972-03-16 1972-03-16 Lamp failure warning systems for road vehicles

Country Status (1)

Country Link
GB (1) GB1369815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2865861A1 (en) * 2004-02-04 2005-08-05 Henri Guillemaut Equipment e.g. lighting device, failure indicator, has coil that is not fed, in case of damage of one of two lights, and another coil permitting to move core and to close contactor which then feeds klaxon and warning light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2865861A1 (en) * 2004-02-04 2005-08-05 Henri Guillemaut Equipment e.g. lighting device, failure indicator, has coil that is not fed, in case of damage of one of two lights, and another coil permitting to move core and to close contactor which then feeds klaxon and warning light

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Legal Events

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