GB804194A - Improvements in or relating to headlamp systems for motor road vehicles - Google Patents

Improvements in or relating to headlamp systems for motor road vehicles

Info

Publication number
GB804194A
GB804194A GB38679/56A GB3867956A GB804194A GB 804194 A GB804194 A GB 804194A GB 38679/56 A GB38679/56 A GB 38679/56A GB 3867956 A GB3867956 A GB 3867956A GB 804194 A GB804194 A GB 804194A
Authority
GB
United Kingdom
Prior art keywords
focal point
lamp
switch
lamps
filament
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
GB38679/56A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB804194A publication Critical patent/GB804194A/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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F21S41/164—Incandescent light sources, e.g. filament or halogen lamps having two or more filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated

Landscapes

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

Abstract

804,194. Vehicle lamps. GENERAL MOTORS CORPORATION. Dec. 19, 1956 [Jan. 16, 1956], No. 38679/56. Class 75(4) A headlamp system for motor vehicles consists of two lamps mounted side by side at one side of the vehicle, the first lamp having one light source at the focal point and a second light source offset from the focal point and the second lamp having a light source at the focal point only. Each lamp may have a parabolic reflector and a lens adapted to give a light distribution pattern having a disperse field of relatively low illumination and a concentrated field of relatively high illumination. In the construction, shown, the outer lamp 16, Fig. 2, has a filament 70 provided with a light shield 73 above it and mounted with one end at the focal point of the reflector 17 and extending to the left as viewed in the direction of the light beam, and a second filament 72 mounted symmetrically to the vertical through the focal point but slightly below this. The inner lamp 18 has a single filament arranged at the focal point of the reflector 19. The axis of the parabolic reflector of lamp 16 is displaced down and to the right when viewed in the direction of the beam. The lamps are arranged in a common casing 20 having cup shaped rear portions 30, 32, Fig. 3, with seating surfaces 34, 36 against which mounting rings 38, 40 for the lamps are held by coil springs, screws 58, 60 and 46, 48 being provided for adjustment of the rings for aiming the light beams. The filaments 72, 78 are connected to earth through conductors 80, 90 and to the contact 84 of a switch 86. The filament 70 is also earthed through the conductor 90 and is connected to the contact 96 of the switch 86. The switch 86 is cannected via a switch 100 to a battery 102, the other terminal of which is earthed. Figs. 7-10 (not shown) give diagrams of the resultant light distribution pattern.
GB38679/56A 1956-01-16 1956-12-19 Improvements in or relating to headlamp systems for motor road vehicles Expired GB804194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US804194XA 1956-01-16 1956-01-16

Publications (1)

Publication Number Publication Date
GB804194A true GB804194A (en) 1958-11-12

Family

ID=22157238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38679/56A Expired GB804194A (en) 1956-01-16 1956-12-19 Improvements in or relating to headlamp systems for motor road vehicles

Country Status (1)

Country Link
GB (1) GB804194A (en)

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