GB920496A - Improvements in vehicle headlamps with double filaments - Google Patents

Improvements in vehicle headlamps with double filaments

Info

Publication number
GB920496A
GB920496A GB7895/59A GB789559A GB920496A GB 920496 A GB920496 A GB 920496A GB 7895/59 A GB7895/59 A GB 7895/59A GB 789559 A GB789559 A GB 789559A GB 920496 A GB920496 A GB 920496A
Authority
GB
United Kingdom
Prior art keywords
reflector
filament
axis
light
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
GB7895/59A
Inventor
John Willoughby Thomas Wright
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.)
A E I LAMP AND LIGHTING COMPAN
Original Assignee
A E I LAMP AND LIGHTING COMPAN
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 A E I LAMP AND LIGHTING COMPAN filed Critical A E I LAMP AND LIGHTING COMPAN
Priority to GB7895/59A priority Critical patent/GB920496A/en
Priority to BE588329A priority patent/BE588329A/en
Priority to CH245260A priority patent/CH380239A/en
Priority to DEA34140A priority patent/DE1120012B/en
Publication of GB920496A publication Critical patent/GB920496A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
    • 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
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/125—Coloured light

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

920,496. Incandescent electric lamps. A.E.I. LAMP & LIGHTING CO. Ltd. Feb. 23, 1960 [March 6, 1959], No. 7895/59. Class 39 (2). In a dual filament assembly for a gas-filled incandescent lamp of the kind which produces in association with a suitable reflector, beams of light having different orientations in relation to the reflector, one filament being so located as to produce a beam coaxial with the reflector and the other filament a beam displaced from the axis of the reflector, a colour filter is so associated with the latter filament as to intercept only light rays from that filament to the reflector, the colour filter conforming to the surface of the upper half of the reflector so that correction currents in the filling gas are deflected by the surface of the filter and limit the deposit thereon of material sputtered from the filament. The assembly may be used in a lamp for mounting in a vehicle headlamp or may be mounted in a headlamp of the sealed beam type. The assembly comprises a main filament 1 at the focus of the reflector 4 with its axis at right angles to the axis of the reflector and a filament 2 arranged with its axis along the axis of the reflector. The filter 3 is mounted between the filaments so as to intercept light from the filament 2 falling on the upper half of the reflector, a shield 5 being arranged below the filament 2 to prevent light from this filament reaching the lower half of the reflector. Specification 365,775 is referred to.
GB7895/59A 1959-03-06 1959-03-06 Improvements in vehicle headlamps with double filaments Expired GB920496A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB7895/59A GB920496A (en) 1959-03-06 1959-03-06 Improvements in vehicle headlamps with double filaments
BE588329A BE588329A (en) 1959-03-06 1960-03-04 Improvements to double filament vehicle headlights
CH245260A CH380239A (en) 1959-03-06 1960-03-04 Light with reflector and lamp with double filament
DEA34140A DE1120012B (en) 1959-03-06 1960-03-05 Two-filament incandescent lamp, especially for vehicle headlights, with a color filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7895/59A GB920496A (en) 1959-03-06 1959-03-06 Improvements in vehicle headlamps with double filaments

Publications (1)

Publication Number Publication Date
GB920496A true GB920496A (en) 1963-03-06

Family

ID=9841874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7895/59A Expired GB920496A (en) 1959-03-06 1959-03-06 Improvements in vehicle headlamps with double filaments

Country Status (4)

Country Link
BE (1) BE588329A (en)
CH (1) CH380239A (en)
DE (1) DE1120012B (en)
GB (1) GB920496A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE841777C (en) * 1950-12-08 1952-06-19 Carl Prawitz Multiple lighting system lamp

Also Published As

Publication number Publication date
BE588329A (en) 1960-07-01
CH380239A (en) 1964-07-31
DE1120012B (en) 1961-12-21

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