GB1178492A - Improvements in or relating to Electric Incandescent Lamps for Vehicle Headlights - Google Patents

Improvements in or relating to Electric Incandescent Lamps for Vehicle Headlights

Info

Publication number
GB1178492A
GB1178492A GB02323/67A GB1232367A GB1178492A GB 1178492 A GB1178492 A GB 1178492A GB 02323/67 A GB02323/67 A GB 02323/67A GB 1232367 A GB1232367 A GB 1232367A GB 1178492 A GB1178492 A GB 1178492A
Authority
GB
United Kingdom
Prior art keywords
screen
filament
lamp
envelope
dipping
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
GB02323/67A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1178492A publication Critical patent/GB1178492A/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

Abstract

1,178,492. Lamps for vehicle headlights. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 16 March, 1967 [19 March, 1966], No. 12323/67. Heading H1F. [Also in Division F4] A halogen lamp comprising a cylindrical envelope containing a main filament and an axially extending dipping filament has a screen for the dipping filament arranged on the wall of the lamp envelope and subtending an angle between 165 and 180 degrees at the axis, the envelope having an outer diameter of between 8 mm. and 14 mm. In the form shown, the main filament 2 is located at the focus of a parabolic reflector 4 and extends transversely to the reflector axis X-X. The dipping filament 3 is arranged in front of the focus and a tranverse screen 12 is disposed between the filaments 2 and 3. A further screen 13 is formed by a coating of paint applied to the envelope between the pip 5 and the screen 12 and covers the lower half up to a horizontal boundary on one side and a boundary up to 15 degrees below the horizontal at the other. In a modification, the dipping filament is arranged parallel to but displaced from the axis of the lamp, and between the focal point of the reflector and the pinch. In this case, the internal screen 12 is omitted and the screen 13 is formed by painting an area of the upper half of the lamp.
GB02323/67A 1966-03-19 1967-03-16 Improvements in or relating to Electric Incandescent Lamps for Vehicle Headlights Expired GB1178492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6603641A NL6603641A (en) 1966-03-19 1966-03-19

Publications (1)

Publication Number Publication Date
GB1178492A true GB1178492A (en) 1970-01-21

Family

ID=19796035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02323/67A Expired GB1178492A (en) 1966-03-19 1967-03-16 Improvements in or relating to Electric Incandescent Lamps for Vehicle Headlights

Country Status (9)

Country Link
US (1) US3493806A (en)
AT (1) AT282757B (en)
BE (1) BE695724A (en)
CH (1) CH460946A (en)
ES (1) ES338162A1 (en)
FR (1) FR1514723A (en)
GB (1) GB1178492A (en)
NL (1) NL6603641A (en)
SE (1) SE336840B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1772256C3 (en) * 1968-04-20 1978-05-03 Robert Bosch Gmbh, 7000 Stuttgart Dimmable vehicle headlight for asymmetrical dipped beam
NL154058B (en) * 1968-06-08 1977-07-15 Philips Nv HALOGEN BULB FOR VEHICLE LIGHTING.
DE1901179A1 (en) * 1969-01-10 1970-08-06 Patra Patent Treuhand Two-filament halogen light bulb for motor vehicle headlights
DE2323520A1 (en) * 1973-05-10 1974-11-28 Bosch Gmbh Robert GAS-TIGHT HEADLIGHT FOR VEHICLES
DE3176330D1 (en) * 1981-01-15 1987-08-27 American Sterilizer Co Electrically focused surgical light
US4389700A (en) * 1981-04-13 1983-06-21 Gte Products Corporation Projection unit with separable lamp capsule and slidable means for ejecting same
US4390935A (en) * 1981-04-13 1983-06-28 Gte Products Corporation Projection unit with separable lamp capsule and means for ejecting same
US4587601A (en) * 1981-07-23 1986-05-06 Collins Dynamics, Inc. Combined flood and spot light incorporating a reflector member of circular and parabolic longitudinal cross section
US4480296A (en) * 1981-12-28 1984-10-30 Gte Products Corporation Two-filament lamp for automobile headlight
US4553066A (en) * 1983-08-08 1985-11-12 Gte Products Corporation Multiple filament lamp having wire grid to provide filament redundancy
US5578893A (en) * 1993-11-16 1996-11-26 Piaa Corporation Bulb for vehicular lighting equipment
JPH09237504A (en) * 1996-02-23 1997-09-09 Patent Treuhand Ges Elektr Gluehlamp Mbh Automobile headlight for downward and upward light
DE102006060006A1 (en) * 2006-12-19 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lamp vessel for a halogen headlamp

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1250030A (en) * 1917-02-03 1917-12-11 Lillie E Schickerling Electric-lamp attachment.
US1262395A (en) * 1917-07-07 1918-04-09 Lillie E Schickerling Automobile-lamp bulb.
US1693672A (en) * 1926-11-22 1928-12-04 Charles J Schroeder Electric light
US2006140A (en) * 1932-01-15 1935-06-25 Gen Electric Illumination
US2795722A (en) * 1954-12-29 1957-06-11 Gen Electric Electric incandescent lamp
DE1081972B (en) * 1958-06-03 1960-05-19 Franz Lollert Two-filament light bulb for vehicle headlights
US3234421A (en) * 1961-01-23 1966-02-08 Gen Electric Metallic halide electric discharge lamps
US3160777A (en) * 1962-10-22 1964-12-08 Gen Electric Filament and reflector support for an elongated tube
DE1197825B (en) * 1963-05-07 1965-08-05 Bosch Gmbh Robert Headlights for motor vehicles
DE1622402B1 (en) * 1964-06-20 1969-09-11 Bosch Gmbh Robert Vehicle headlights

Also Published As

Publication number Publication date
FR1514723A (en) 1968-02-23
ES338162A1 (en) 1968-04-01
SE336840B (en) 1971-07-19
US3493806A (en) 1970-02-03
DE1589242A1 (en) 1970-03-26
DE1589242B2 (en) 1975-10-09
CH460946A (en) 1968-08-15
BE695724A (en) 1967-09-18
NL6603641A (en) 1967-09-20
AT282757B (en) 1970-07-10

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