GB1309143A - Vehicle direction indicator winking frequency control circuit - Google Patents

Vehicle direction indicator winking frequency control circuit

Info

Publication number
GB1309143A
GB1309143A GB1897470A GB1897470A GB1309143A GB 1309143 A GB1309143 A GB 1309143A GB 1897470 A GB1897470 A GB 1897470A GB 1897470 A GB1897470 A GB 1897470A GB 1309143 A GB1309143 A GB 1309143A
Authority
GB
United Kingdom
Prior art keywords
winking
lamps
switch
direction indicator
voltage
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
GB1897470A
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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
Priority claimed from DE19691921034 external-priority patent/DE1921034C/en
Application filed by Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1309143A publication Critical patent/GB1309143A/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
    • B60Q11/007—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 the lighting devices indicating change of drive direction
    • 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

1309143 Lamp failure alarms ITT INDUSTRIES Inc 21 April 1970 [25 April 1969] 18974/70 Heading G4N In a lamp failure alarm for a vehicle direction indicator using winking lamps repeatedly operated by a switch, a leakage path is provided across the switch and a control signal derived from the voltage across the lamps or the switch and used to change the frequency of winking in the event of failure of one or more lamps. As described, capacitor C charges via resistor R1 until the voltage at point A is sufficient to operate a threshold circuit SWS when an electronic switch S is set to its lower position so as to discharge capacitor C. This operation continues to repeat, and the resulting waveform is fed to a switching circuit AS which periodically closes the winking contacts S2 controlling the power to the direction indicator lamps L1, L2. The threshold of circuit SWS is controlled by the voltage across a leak resistor R2 halfway through the dark period, hence the frequency of winking will be doubled in the event of failure of one or both lamps L1, L2.
GB1897470A 1969-04-25 1970-04-21 Vehicle direction indicator winking frequency control circuit Expired GB1309143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691921034 DE1921034C (en) 1969-04-25 Monitoring procedures for flashing lamps and their failure

Publications (1)

Publication Number Publication Date
GB1309143A true GB1309143A (en) 1973-03-07

Family

ID=5732274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1897470A Expired GB1309143A (en) 1969-04-25 1970-04-21 Vehicle direction indicator winking frequency control circuit

Country Status (4)

Country Link
US (1) US3643246A (en)
FR (1) FR2040246A1 (en)
GB (1) GB1309143A (en)
NL (1) NL7006137A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789232A (en) * 1972-11-21 1974-01-29 K Wareing Flasher switch with outage indication
DE3118240C2 (en) * 1981-05-08 1984-08-02 Telefunken electronic GmbH, 7100 Heilbronn Flasher
JP6926929B2 (en) * 2017-10-18 2021-08-25 株式会社デンソー Display control device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719288A (en) * 1953-06-11 1955-09-27 Eastman Kodak Co Circuit failure detecting device
US3421157A (en) * 1966-01-24 1969-01-07 Wagner Electric Corp Lamp outage detector

Also Published As

Publication number Publication date
DE1921034B2 (en) 1971-04-29
FR2040246A1 (en) 1971-01-22
DE1921034A1 (en) 1970-11-05
NL7006137A (en) 1970-10-27
US3643246A (en) 1972-02-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees