US3904904A - Sealed beam headlight - Google Patents

Sealed beam headlight Download PDF

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Publication number
US3904904A
US3904904A US463198A US46319874A US3904904A US 3904904 A US3904904 A US 3904904A US 463198 A US463198 A US 463198A US 46319874 A US46319874 A US 46319874A US 3904904 A US3904904 A US 3904904A
Authority
US
United States
Prior art keywords
lamp
cap
shaped
wire
pinch
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
US463198A
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English (en)
Inventor
Klaus Meinecke
Dieter Wilhelm
Leo Coir
Jurgen Tillack
Helmut Samulowitz
Karl Gebhardt
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.)
US Philips Corp
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Priority to US05/596,956 priority Critical patent/US4011642A/en
Application granted granted Critical
Publication of US3904904A publication Critical patent/US3904904A/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

  • a sealed beam lamp unit comprising a quartz iodine lamp accommodated in an outer envelope the lamp is provided with a sleeve-shaped cap which is made of a metal strip material and surrounds the lamp pinch of substantially rectangular cross-section and to which a wire is secured which Serves as the sole support for the lamp.
  • the invention relates to an electric sealed beam lamp unit, in particular for use as a motor-vehicle head lamp, comprising an outer envelope which consists of a concave reflector portion and a transparent from glass lens and in which a filament lamp of high luminous inten sity, for example a quartz halogen lamp is arranged which is provided with a pinch-shaped lamp cap mounted in a lamp holder which is held by a wire support secured in sleeveshaped pinches of the reflector part.
  • a filament lamp of high luminous inten sity for example a quartz halogen lamp
  • Such lamps are also referred to as halogen sealed beam lamps.
  • the halogen cycle operates only at comparatively high temperatures which in turn are achieved only in a correspondingly small bulb.
  • halogen sealed beam lamps cannot be used without additionally sealed inner bulbs.
  • a filament lamp having no cap is inserted into a ceramic plate in which it first is adjusted into the correct position and then secured by means of a cement.
  • the lamp unit is then aligned with respect to the parabolic reflector part in that three metal tubes anchored on the ceramic plate are slipped onto three supporting pins which are secured by brazing in the pinches in the reflector part. Subsequently the lamp is fixed by squeezing the metal tubes about the pins so that the latter are clamped in the tubes.
  • the ceramic bulb support member or the ceramic plate so increases the mass of the lamp that, in particular if the unit is used as a motor-vehicle head lamp, inadmissible vibration may be produced so that the filament lamp is likely to lose its correct position relative to the outer envelope.
  • an electric sealed beam unit of the specified type in that the filament lamp is provided with a sleeve-shaped bulb support member which is made of metal strip material and surrounds the lamp pinch of substantially rectangular cross-section and to which is secured a crank shaped supporting wire which is the sole lampsupporting member.
  • the term cranked wire is to be understood to mean a wire bent at least twice the oppositely directed ends of which extend substantially parallel to one another and preferably are co-planar.
  • the sleeve-shaped cap of metal strip folded in known manner (British patent specification No. 1,053,822) around the pinch substantially does not increase the mass of the lamp.
  • the comparatively stiff supporting wire which serves as the single supporting member also has comparatively little mass and at the same time by its cranked shape enables the lamp to be simply aligned relative to the reflector part.
  • the sleeve-shaped cap preferably comprises two symmetrical cap halves.
  • the sealed beam lamp unit there is secured to the sleeve-shaped cap a wire which extends parallel to the lamp axis to a point beyond the lamp and serves to carry a metal front light shield.
  • one of the current supply leads of the filament lamp is electrically connected to the sleeveshaped cap, the support wire also acting as a lead.
  • the invention further relates to a method of manufacturing such a sealed beam lamp unit in which the filament lamp together with the support wire and possibly with further leads is mounted in the sleeve-shaped pinches of the reflector part and secured therein by soldering. According to the invention, before the insertion of the supporting wire in the fixed reflector part the filament lamp is aligned relative to said part by bending the cranked supporting wire.
  • the filament lamp is preferably clamped in an adjustable device, the free end of the supporting wire being immovably held in front of the respective pinch of the reflector, after which the filament lamp is given the required position relative to the reflector part by bending the supporting wire and then the reflector part is axially slipped onto said wire.
  • the cranked supporting wire is at least partly heated before the filament lamp is aligned. This heating is preferably effected by the passage of current.
  • FIG. 1 shows, partly in section, a sealed beam lamp unit according to the invention in substantially actual size
  • FIG. 2 shows the quartz iodine filament lamp used in the unit shown in FIG. I
  • FIG. 3 is a side elevation of the quartz iodine lamp of FIG. 2, and
  • FIG. 4 illustrates the alignment of the quartz iodine filament lamp of FIGS. 2 and 3 relative to the reflector part of the sealed beam lamp unit of FIG. 1.
  • a sealed beam lamp unit has an outer envelope 1 which comprises a concave, in particular parabolic, glass reflector part 2 and a transparent front glass lens 3 sealed to the reflector part.
  • the reflector part 2 is internally coated with a reflecting metal layer 4.
  • the outer envelope 1 is filled with an inert gas; the pressure of the gas filling is 62 cm of mercury column at 20C.
  • the rear surface of the reflector part 2 is provided with three sleeveshaped pinches, only two of which (5 and 6) are visible in FIG. 1.
  • the outer envelope 1 encloses a quartz iodine lamp 8 which has a dip filament 9 and a high beam filament 10 (FIG. 4).
  • Reference numeral 11 denotes a cupshaped dipping shield and 12 denotes current supply leads in the lamp 8.
  • the lamp 8 has a pinch 13 of substantially rectangular cross-section which is surrounded by a sleeve-shaped cap 14 made of thin metal sheet (FIGS. 2 and 3).
  • the cap 14 comprises two half-caps l5 and 16 made of a resilient material. for example nickel-chromium steel, from 0.2 to 0.25 mm thick. which are joined to one another by spot welding and at their ends nearer the bulb have flanges 21 serving as a shield.
  • the latter is formed with small projections 17 which extend in corresponding slots 18 in the half-caps l5 and 16.
  • a holding wire 19 which extends parallel to the axis of the lamp 8 and beyond the latter and carries a cup-shaped metal shield 20 disposed in front of the lamp 8.
  • the holding wire 19 preferably islocated behind the cup-shaped dipping shield 11 for the dipped-beam filament 9 (FIG. 4).
  • the current supply leads 22 are made of a manganese-nickel alloy and each have a diameter of 0.75 mm.
  • a downwardly projecting cranked supporting wire 23 which is made of titanium-stabilised iron and has a diameter of 1.8 mm.
  • the wire 23 is secured in the sleeve-shaped pinch 5 of the reflector part 2 by soldering and is virtually the sole support for the lamp 8 in the outer envelope 1; it further acts as a current supply conductor for that current supply lead 12 of the dipped-beam filament 9 which is electrically connected to the cap 14.
  • FIGS. 2 and 3 The arrangement and alignment of the lamp 8 in the reflector part 2 will now be described with reference to FIG. 4.
  • the lamp shown in FIGS. 2 and 3 is clamped in a suitable device.
  • the crank shaped supporting wire 23 is clamped between two tongs 24 and 25. the tong 25 being fixed and the tong 24 being movable. This ensures that the free end of the supporting wire 23 does not change position relative to the reflector pinch 5 of the reflector part 2, which is held in a suitable device beneath the lamp 8, during subsequent alignment of the lamp 8.
  • an electric voltage U is applied between the tongs 24 and 25 which causes a current to flow through the crank shaped part of the supporting wire 23 such that said part is heated and hence becomes deformable.
  • the filaments 9 and 10 are rendered operative and the outlines of the filaments and the cup-shaped dipping shield are either projected greatly magnified onto a screen, so that the positions of the filaments and the shield are clearly visible, or the filament outlines are electronically scanned.
  • the geometry of the lamp 8 is moved into the desired tolerance region, i.e. the filament is so aligned relative to the reflector part 2 disposed beneath it that the focal point 26 of the reflector part 2 eventually lies between the filaments 9 and 10 on the longitudinal axis of the lamp 8.
  • the free end of the supporting wire 23 is immovably held in front of its reflector pinch 5 by the tong 25, so that the geometry of the lamp is definitely aligned in a desired position relative to the single supporting wire 23.
  • the reflector part 2 together with the device holding it is moved into a position 20 beneath the lamp 8, which position is shown by broken lines. This movement is effected by axial dis placement of the reflector part 2, the supporting wire 23 and the current conductors 22 slipping into the reflector pinches 5 in which they are then secured by brazing.
  • the lamp 8 is uniquely fixed with respect to the parabolic reflector part 2.
  • the operations of aligning the lamp 8 and securing it in the reflector part 2 are performed by means of a single supporting wire 23 the free end of which is so held during alignment as to ensure that it is immersed into the molten solder in the pinch 5.
  • front glass lens 3 is sealed to the reflector part 2, and the outer envelope 1 is filled with an inert gas.
  • An electric sealed beam lamp unit having an outer envelope which comprises a concave reflector part and a front glass and in which a filament lamp of high luminous intensity is disposed, said filament lamp having a pinehshapcd lamp cap, a lamp holder accommodating said lamp cap, said reflector part having sleeve shaped pinches, and a wire support secured to said sleeve shaped pinches, wherein said cap is sleeve-shaped and made of metal strip material, said cap being disposed surrounding said pinch, said pinch having a substantially rectangular cross-section and said wire support being crank shaped and serving as the sole support for the lamp.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US463198A 1973-04-28 1974-04-22 Sealed beam headlight Expired - Lifetime US3904904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/596,956 US4011642A (en) 1973-04-28 1975-07-17 Method for manufacturing a sealed beamed headlight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2321709A DE2321709C3 (de) 1973-04-28 1973-04-28 Elektrische Strahlerlampe, insbesondere für den Einsatz als Fahrzeugscheinwerfer, und Verfahren zu ihrer Herstellung

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/596,956 Division US4011642A (en) 1973-04-28 1975-07-17 Method for manufacturing a sealed beamed headlight

Publications (1)

Publication Number Publication Date
US3904904A true US3904904A (en) 1975-09-09

Family

ID=5879642

Family Applications (1)

Application Number Title Priority Date Filing Date
US463198A Expired - Lifetime US3904904A (en) 1973-04-28 1974-04-22 Sealed beam headlight

Country Status (11)

Country Link
US (1) US3904904A (de)
JP (1) JPS5511268B2 (de)
AT (1) ATA341374A (de)
BE (1) BE814280A (de)
CA (1) CA1005036A (de)
DD (1) DD113417A5 (de)
DE (1) DE2321709C3 (de)
FR (1) FR2227149B1 (de)
GB (1) GB1408746A (de)
IT (1) IT1010096B (de)
NL (1) NL7405494A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2909259A1 (de) * 1978-03-13 1979-09-27 Gte Sylvania Inc Wolfram-halogen-lampe fuer einen monoblock-scheinwerfer sowie methode zu ihrer herstellung
US4189657A (en) * 1978-04-20 1980-02-19 Gte Sylvania Incorporated Method of making sealed beam lamp
US4195245A (en) * 1977-06-20 1980-03-25 Stanley Electric Co., Ltd. Sealed beam lamp for automobile
DE2945242A1 (de) * 1978-11-13 1980-05-22 Gte Sylvania Inc Wolfram-halogen-kapsel und damit ausgestatteter scheinwerfer
US4225903A (en) * 1977-05-10 1980-09-30 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle headlight for low and high beams
US4241391A (en) * 1978-02-27 1980-12-23 Westinghouse Electric Corp. Inner lamp-mount assembly for sealed-beam headlamp and similar lighting apparatus
FR2462039A1 (fr) * 1979-07-18 1981-02-06 Wagner Electric Corp Lampe electrique, notamment pour un phare de vehicule
US4339685A (en) * 1979-05-14 1982-07-13 Koito Manufacturing Company, Ltd. Sealed beam lamp assembly
US4564783A (en) * 1982-07-09 1986-01-14 Patent-Treuhand Gesellschaft Fur Elektrische Gluhlampen Gmbh Halogen incandescent lamp-and-reflector unit
US4663558A (en) * 1984-02-16 1987-05-05 Ichikoh Industries Limited Incandescent lamp bulb assembly
US4747029A (en) * 1986-11-13 1988-05-24 General Motors Corporation Headlamp assembly
US4829210A (en) * 1987-01-23 1989-05-09 Gte Products Corporation Multifunctional structural member and reflector lamp employing same
US4882660A (en) * 1986-11-13 1989-11-21 General Motors Corporation Headlamp assembly
US20060077664A1 (en) * 2004-10-08 2006-04-13 Coretronic Corporation Light blocking apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56104692A (en) * 1979-09-07 1981-08-20 Ciucani Mario Box calf hemming sewing machine for moccasin as popular name
US4363994A (en) * 1980-07-07 1982-12-14 Cortorillo Salvatore F Halogen lamp with strap-type bulb support mechanism
US4728875A (en) * 1986-10-20 1988-03-01 Allegheny Ludlum Corporation Method and apparatus for monitoring a liquid level

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2177705A (en) * 1936-08-11 1939-10-31 Gen Electric Electric lamp
US2880347A (en) * 1954-12-08 1959-03-31 Gen Electric Sealed beam headlight with internal shield
US3413508A (en) * 1966-12-19 1968-11-26 Westinghouse Electric Corp Sealed-beam type electric lamp with non-circular lens component
US3553519A (en) * 1967-08-16 1971-01-05 Lucas Industries Ltd High intensity vehicle lamp with shield preventing unwanted reflection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4711779U (de) * 1971-03-02 1972-10-12

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2177705A (en) * 1936-08-11 1939-10-31 Gen Electric Electric lamp
US2880347A (en) * 1954-12-08 1959-03-31 Gen Electric Sealed beam headlight with internal shield
US3413508A (en) * 1966-12-19 1968-11-26 Westinghouse Electric Corp Sealed-beam type electric lamp with non-circular lens component
US3553519A (en) * 1967-08-16 1971-01-05 Lucas Industries Ltd High intensity vehicle lamp with shield preventing unwanted reflection

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225903A (en) * 1977-05-10 1980-09-30 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle headlight for low and high beams
US4195245A (en) * 1977-06-20 1980-03-25 Stanley Electric Co., Ltd. Sealed beam lamp for automobile
US4241391A (en) * 1978-02-27 1980-12-23 Westinghouse Electric Corp. Inner lamp-mount assembly for sealed-beam headlamp and similar lighting apparatus
DE2909259A1 (de) * 1978-03-13 1979-09-27 Gte Sylvania Inc Wolfram-halogen-lampe fuer einen monoblock-scheinwerfer sowie methode zu ihrer herstellung
US4189657A (en) * 1978-04-20 1980-02-19 Gte Sylvania Incorporated Method of making sealed beam lamp
DE2945242A1 (de) * 1978-11-13 1980-05-22 Gte Sylvania Inc Wolfram-halogen-kapsel und damit ausgestatteter scheinwerfer
US4339685A (en) * 1979-05-14 1982-07-13 Koito Manufacturing Company, Ltd. Sealed beam lamp assembly
US4262228A (en) * 1979-07-18 1981-04-14 Wagner Electric Corporation Electric lamp with U-shaped support wires
FR2462039A1 (fr) * 1979-07-18 1981-02-06 Wagner Electric Corp Lampe electrique, notamment pour un phare de vehicule
US4564783A (en) * 1982-07-09 1986-01-14 Patent-Treuhand Gesellschaft Fur Elektrische Gluhlampen Gmbh Halogen incandescent lamp-and-reflector unit
US4663558A (en) * 1984-02-16 1987-05-05 Ichikoh Industries Limited Incandescent lamp bulb assembly
US4747029A (en) * 1986-11-13 1988-05-24 General Motors Corporation Headlamp assembly
US4882660A (en) * 1986-11-13 1989-11-21 General Motors Corporation Headlamp assembly
US4829210A (en) * 1987-01-23 1989-05-09 Gte Products Corporation Multifunctional structural member and reflector lamp employing same
US20060077664A1 (en) * 2004-10-08 2006-04-13 Coretronic Corporation Light blocking apparatus
US7160011B2 (en) * 2004-10-08 2007-01-09 Coretronic Corporation Light blocking apparatus

Also Published As

Publication number Publication date
DD113417A5 (de) 1975-06-05
GB1408746A (en) 1975-10-01
JPS5511268B2 (de) 1980-03-24
NL7405494A (de) 1974-10-30
DE2321709A1 (de) 1974-11-07
DE2321709B2 (de) 1975-03-06
CA1005036A (en) 1977-02-08
FR2227149B1 (de) 1979-02-16
ATA341374A (de) 1977-06-15
BE814280A (fr) 1974-10-28
DE2321709C3 (de) 1975-10-16
FR2227149A1 (de) 1974-11-22
IT1010096B (it) 1977-01-10
JPS5014182A (de) 1975-02-14

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