GB1195689A - Lamp Failure Warning Circuit - Google Patents

Lamp Failure Warning Circuit

Info

Publication number
GB1195689A
GB1195689A GB51140/66A GB5114066A GB1195689A GB 1195689 A GB1195689 A GB 1195689A GB 51140/66 A GB51140/66 A GB 51140/66A GB 5114066 A GB5114066 A GB 5114066A GB 1195689 A GB1195689 A GB 1195689A
Authority
GB
United Kingdom
Prior art keywords
transistor
lamp
switch
lights
illuminate
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
GB51140/66A
Inventor
William Frank Hill
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 GB51140/66A priority Critical patent/GB1195689A/en
Priority to JP7331067A priority patent/JPS4421144B1/ja
Priority to ES347650A priority patent/ES347650A1/en
Priority to FR128243A priority patent/FR1544497A/en
Publication of GB1195689A publication Critical patent/GB1195689A/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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel

Landscapes

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

Abstract

1,195,689. Semi-conductor switching circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. 24 Oct., 1967 [15 Nov., 1966], No. 51140/66. Heading H3T. [Also in Division G4] A lamp failure warning circuit comprises a plurality of series circuits each including a resistor 13, 13a . . ., and a lamp 14, 14a . . ., e.g. the lamps on a road vehicle, the junction of the resistor and lamp in each circuit being connected to operate warning apparatus in the event of any one of the lamps failing. When a lamp fails, its respective diode 16, 16a . . . conducts to switch off transistor 17 and hence switch on transistor 22 and illuminate warning light 23. Further means may be provided, as shown, to indicate failure of the warning light: the currents provided to warning light 23 and further light 23a through 24, 25 and 24a, 25a are normally insufficient to illuminate the lights, but should one of these lights fail, the associated diode 27 or 27a conducts to switch off transistor 17 and switch on transistor 22 and thus illuminate whichever of lamps 23, 23a is still intact. The circuit of Fig. 3 (not shown) is modified to monitor the stop lights, in addition to the other lights, of the vehicle.
GB51140/66A 1966-11-15 1966-11-15 Lamp Failure Warning Circuit Expired GB1195689A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB51140/66A GB1195689A (en) 1966-11-15 1966-11-15 Lamp Failure Warning Circuit
JP7331067A JPS4421144B1 (en) 1966-11-15 1966-11-15
ES347650A ES347650A1 (en) 1966-11-15 1967-11-15 Lamp Failure Warning Circuit
FR128243A FR1544497A (en) 1966-11-15 1967-11-15 Lamp out of service warning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB51140/66A GB1195689A (en) 1966-11-15 1966-11-15 Lamp Failure Warning Circuit

Publications (1)

Publication Number Publication Date
GB1195689A true GB1195689A (en) 1970-06-17

Family

ID=10458801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51140/66A Expired GB1195689A (en) 1966-11-15 1966-11-15 Lamp Failure Warning Circuit

Country Status (3)

Country Link
JP (1) JPS4421144B1 (en)
ES (1) ES347650A1 (en)
GB (1) GB1195689A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129633A (en) * 1982-09-28 1984-05-16 Electronic Components Ltd Lamp monitoring circuit
CN104290651A (en) * 2014-09-29 2015-01-21 马瑞利汽车零部件(芜湖)有限公司 Steering lamp fault detection circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129633A (en) * 1982-09-28 1984-05-16 Electronic Components Ltd Lamp monitoring circuit
CN104290651A (en) * 2014-09-29 2015-01-21 马瑞利汽车零部件(芜湖)有限公司 Steering lamp fault detection circuit
CN104290651B (en) * 2014-09-29 2016-09-14 马瑞利汽车零部件(芜湖)有限公司 A kind of steering indicating light failure detector circuit

Also Published As

Publication number Publication date
ES347650A1 (en) 1969-02-16
JPS4421144B1 (en) 1969-09-10

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Legal Events

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