US2020130A - Vehicle headlight lamp - Google Patents

Vehicle headlight lamp Download PDF

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Publication number
US2020130A
US2020130A US606633A US60663332A US2020130A US 2020130 A US2020130 A US 2020130A US 606633 A US606633 A US 606633A US 60663332 A US60663332 A US 60663332A US 2020130 A US2020130 A US 2020130A
Authority
US
United States
Prior art keywords
lamp
stem
reflector
filament
bulb
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 - Lifetime
Application number
US606633A
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English (en)
Inventor
Astor Ernest
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2020130A publication Critical patent/US2020130A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • Fig. 1 is a perspective view of a lamp comprising my invention
  • Fig. 2 is a plan view of a lamp located in 'a reflector
  • Fig. 3 is a diagrammatic side view of the lamp
  • Fig. 4 is a diagrammatic view of a lamp and reflector showing various reflected rays
  • Figs. 5 and 6 are detailed perspective viewsv of modifications of one of the reflecting screens.
  • the lamp comprises a-base ID and bulb II and filaments I2 and I3 in said bulb.
  • filament I3 being I Said filament I2, preferably V-shaped, is mounted on lead wires I4, I5 which are sealed in a stem press I6.
  • Filament I3, disposed along theaxis of the bulb I I, is mounted at one end on a'lead wire H which mounted directly below said filament I3 on the lead wire l5.
  • the filament I2 is so located as to lie at the focalpoint III of a reflector 20.
  • the cup I8 serves to limit the projection of light from the filament I3 to the upper part of the reflector 20 from which it is directed below the horizontal as shown by a ray 2
  • screens 23 comprising metal strips adjacent to the stem press I6 and lead wires I5, I! and extending beyond said stem press.
  • Said 20 "screens or shields 23 may be mounted on the lead wires I5, I! along opposite sides'of said stem press I6 and are preferably wide enough to extend above and below the stem press and lead wires.
  • Said shield 24 may be mounted on the lead wires l5, II, or it may be made integral with the shields 23 from a piece of suitably formed metal. As shown in Fig.3, the shield 24 is prefer- 4o ably. inclinedforward and intercepts the seco-ndary rays which are reflected back from the bulb II and directs them back toward the reflector. The back of said shield 24 being unlighted will not give rise to brilliant spots in the reflector.
  • FIGs. 5 and 6 are shown modifications of the shield 24 comprising a rectangular sheet 25 in Fig. 5 and a sheet 26 in Fig. 6 curved into an arc. 1
  • a lamp for vehicldheadlamps the com-" bination of a bulb, a stem sealed therein having lead wires embedded in the press thereof, a filament supported .by said stem and a pair of shields l6 ment supported by said stem, a pair of shields mounted adjacent to and on opposite sides of said stem press, and a shield mounted just beyond the forward edge of said stem press and above the longitudinal axis of said lamp, said shield being inclined forward at an angle to said longitudinal axis of said lamp.
  • a lamp for vehicle headlamps the combination of a bulb, a stem sealed therein having lead wires embedded in the press thereof, a pair of filaments disposed substantially on the longitudinal axis of the lamp one ahead of the other, with a concave light reflector disposed under the forward filament, a pair of shields mounted adjacent to and on opposite sides of said stem press, and a shield mounted just beyond the forward edge of said stem press and above the longitudinal axis of said lamp, said shield being inclined forward at an angle to said longitudinal axis of said lamp.
  • a lamp for vehicle headlamps the combination of a substantially spherical bulb,'a stem sealed to the rear wall of said bulb and having lead wires embedded in the press thereof, a filament'in said bulb electrically connected to said 'lead wires and located between the center and the forward end of said bulb, said stem and filament being located substantially in the longitudinal axis of said lamp, a concave light reflector disposed below said filament and adapted to reflect light therefrom upwardly, and a forwardly inclined shield mounted adjacent the forward edge of said stem press above the longitudinal axis of the lamp.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US606633A 1931-05-04 1932-04-21 Vehicle headlight lamp Expired - Lifetime US2020130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR732284T 1931-05-04

Publications (1)

Publication Number Publication Date
US2020130A true US2020130A (en) 1935-11-05

Family

ID=9121403

Family Applications (1)

Application Number Title Priority Date Filing Date
US606633A Expired - Lifetime US2020130A (en) 1931-05-04 1932-04-21 Vehicle headlight lamp

Country Status (2)

Country Link
US (1) US2020130A (fr)
FR (1) FR732284A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912610A (en) * 1954-07-24 1959-11-10 Philips Corp Electrical incandescent lamp mounting structure
US3107866A (en) * 1961-01-25 1963-10-22 Nowak Karl Motor vehicle headlamp
US3200281A (en) * 1961-10-09 1965-08-10 Mickley Rolf Two-filament incandescent lamp for non-dazzling high and low beams in automobile headlights
US3622778A (en) * 1967-12-19 1971-11-23 Cibie Projecteurs Vehicle headlamp with two light sources
US3774064A (en) * 1970-04-16 1973-11-20 Thorn Electrical Ind Ltd Incandescent lamp filament supports
US3962596A (en) * 1973-11-14 1976-06-08 British Sealed Beams Limited Filament shields
US3979622A (en) * 1973-05-01 1976-09-07 U.S. Philips Corporation Headlight and incandescent lamp for anti-dazzle beam
US5578893A (en) * 1993-11-16 1996-11-26 Piaa Corporation Bulb for vehicular lighting equipment
US20060114687A1 (en) * 2004-11-26 2006-06-01 Koito Manufacturing Co., Ltd. Vehicle headlamp

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912610A (en) * 1954-07-24 1959-11-10 Philips Corp Electrical incandescent lamp mounting structure
US3107866A (en) * 1961-01-25 1963-10-22 Nowak Karl Motor vehicle headlamp
US3200281A (en) * 1961-10-09 1965-08-10 Mickley Rolf Two-filament incandescent lamp for non-dazzling high and low beams in automobile headlights
US3622778A (en) * 1967-12-19 1971-11-23 Cibie Projecteurs Vehicle headlamp with two light sources
US3774064A (en) * 1970-04-16 1973-11-20 Thorn Electrical Ind Ltd Incandescent lamp filament supports
US3979622A (en) * 1973-05-01 1976-09-07 U.S. Philips Corporation Headlight and incandescent lamp for anti-dazzle beam
US3962596A (en) * 1973-11-14 1976-06-08 British Sealed Beams Limited Filament shields
US5578893A (en) * 1993-11-16 1996-11-26 Piaa Corporation Bulb for vehicular lighting equipment
US20060114687A1 (en) * 2004-11-26 2006-06-01 Koito Manufacturing Co., Ltd. Vehicle headlamp
US7461953B2 (en) * 2004-11-26 2008-12-09 Koito Manufacturing Co., Ltd. Vehicle headlamp

Also Published As

Publication number Publication date
FR732284A (fr) 1932-09-15

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