GB1048946A - Means for dimming a vehicle headlamp - Google Patents

Means for dimming a vehicle headlamp

Info

Publication number
GB1048946A
GB1048946A GB42872/64A GB4287264A GB1048946A GB 1048946 A GB1048946 A GB 1048946A GB 42872/64 A GB42872/64 A GB 42872/64A GB 4287264 A GB4287264 A GB 4287264A GB 1048946 A GB1048946 A GB 1048946A
Authority
GB
United Kingdom
Prior art keywords
transistor
dimming
photo
cell
headlamps
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
GB42872/64A
Inventor
John Francis Shirley Mccombe
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 GB42872/64A priority Critical patent/GB1048946A/en
Publication of GB1048946A publication Critical patent/GB1048946A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H05B39/04—Controlling
    • H05B39/041—Controlling the light-intensity of the source
    • H05B39/044—Controlling the light-intensity of the source continuously
    • 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
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • 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
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

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

Abstract

1,048,946. Systems for dimming vehicle headlamps. JOSEPH LUCAS (INDUSTRIES) Ltd. Sept. 29, 1965 [Oct. 21, 1964], No. 42872/64. Heading H2H. A system for dimming the headlamps 16 of a motor vehicle comprises a transistor 15 having its collector emitter path in series with the lamps, means being provided to vary the base current of the transistor to control the lamp current. The base current control means comprises a second transistor 14 having its collector connected to the base of the transistor 15, the transistor 14 being controlled by means of a potentiometer 13 connected across the battery 11, 12. A photo-cell 17 is included to make the system responsive to incident light. If required an amplifier may be included between the photo-cell 17 and the transistor 15.
GB42872/64A 1964-10-21 1964-10-21 Means for dimming a vehicle headlamp Expired GB1048946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB42872/64A GB1048946A (en) 1964-10-21 1964-10-21 Means for dimming a vehicle headlamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB42872/64A GB1048946A (en) 1964-10-21 1964-10-21 Means for dimming a vehicle headlamp

Publications (1)

Publication Number Publication Date
GB1048946A true GB1048946A (en) 1966-11-23

Family

ID=10426329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42872/64A Expired GB1048946A (en) 1964-10-21 1964-10-21 Means for dimming a vehicle headlamp

Country Status (1)

Country Link
GB (1) GB1048946A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242018A (en) * 1990-03-13 1991-09-18 Chen Min Shiung Automatic brightness control device for motor vehicle headlamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242018A (en) * 1990-03-13 1991-09-18 Chen Min Shiung Automatic brightness control device for motor vehicle headlamps

Similar Documents

Publication Publication Date Title
GB1387857A (en) Lighting control system
GB1525344A (en) Control system for automatically switching lights
GB1048946A (en) Means for dimming a vehicle headlamp
GB1286956A (en) Spark ignition systems
GB1333325A (en) Vehicle tail-lamp systems for use in fog
GB1078961A (en) Improvements in or relating to dimmed headlight systems
GB961111A (en) Motor road vehicle signal lamp system
GB1082054A (en) Improvements in or relating to electric lamps and control systems therefor
GB1098610A (en) Lighting systems for road vehicles
GB898150A (en) Electronic device for the automatic lighting of the side lights of motor vehicles
GB1067845A (en) Improvements in or relating to lighting systems for road vehicles
GB1072394A (en) Photoelectric controlled lighting circuits
ES414814A1 (en) Vehicle lighting systems
GB1091419A (en) A sealed-beam automobile headlight lamp
GB1162125A (en) Electronic Device for Automatic Light Changing on Vehicles
GB1338093A (en) Lighting systems for road vehicles
GB1010201A (en) Light sensitive circuits
ES300089A1 (en) Connection system for lighting on automobile vehicles (Machine-translation by Google Translate, not legally binding)
GB1213005A (en) Circuit arrangement for checking motor vehicle lighting installations
GB1098609A (en) Lighting systems for road vehicles
GB1037210A (en) Control assembly, particularly for motor vehicle heating and ventilating systems
GB1255955A (en) Vehicle lamp assembly
SE308671B (en)
ES248814A2 (en) System of automatic change of road lights to crossing, in motor vehicles (Machine-translation by Google Translate, not legally binding)
GB1274989A (en) A lighting system for automotive vehicles