US3824421A - Electric filament lamp - Google Patents

Electric filament lamp Download PDF

Info

Publication number
US3824421A
US3824421A US00286933A US28693372A US3824421A US 3824421 A US3824421 A US 3824421A US 00286933 A US00286933 A US 00286933A US 28693372 A US28693372 A US 28693372A US 3824421 A US3824421 A US 3824421A
Authority
US
United States
Prior art keywords
filament
ridge
cap
spot
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 - Lifetime
Application number
US00286933A
Other languages
English (en)
Inventor
L Schuringa
H Roefs
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
Application granted granted Critical
Publication of US3824421A publication Critical patent/US3824421A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Definitions

  • the screening cap comprises one or several ridges which areat least partly squeezed by the spotwelding operation.
  • a cap is used the flat part of which comprises at least one ridge in the place where the relevant straight end of the conductor is welded to the cap. Said ridge extends transverse to the longitudinal direction of the end of the filament or the conductor which is forced into the ridge by the spot-welding operation.
  • a cap having one or several ridges a larger contact resistance is formed as a result of which a lower energy consumption and a small detrition of the welding electrodes is achieved.
  • the spot-weld in a cap having a flat part with one or several ridges is considerably stronger than in the known cap.
  • the ridge is preferably in the form of a pleat in the material of the flat part of the cap, said pleat having a V-shaped cross-section.
  • the invention will be described in greater detail with reference to a drawing, in which a cap 1 of a filament according to the invention is shown.
  • the helically wound anti-dazzle filament 2 extends approximately.
  • the sleeve 7 with the filament end 5 incorporated therein is connected as follows: First the sleeve 7 is moved to such a position relative to the flat edge 8, that the sleeve 7 engages the raised portion of the ridge. The contact surface between the ridge 9 and the sleeve 7 is substantially punctiform. The crossing of the ridge 9 and the sleeve 7 is then arranged between the electrodes of a spot-welding device, after which the spotwelding operation is carried out. As a result of this spot-welding operation, the sleeve 7 is forced into the ridge 9. The parts of the ridge 9 present on either side of the sleeves 7 are squeezed more or less.
  • the ridge 9 has a V-shaped crosssection, as a result of which a very small contact surface exists between the ridge 9 and the sleeve 7 prior to the spot-welding operation.
  • end 5 of the filament may also be spotwelded directly to the edge 8 so without the interposition of thesleeve 7.
  • the ridge 9 shown in the FIGURE extends over the full length of the edge 8, only locally interrupted by the spot-welding operation. Of course, a shorter ridge which covers only the area of the welding place will do.
  • the edge 8 may also be constructed with two or more ridges which preferably extend in parallel and which extend throughout the length of the edge 8 or not.
  • an electric filament lamp in particular a halogen twin lamp for motor-cars, in which an anti-dazzle filament and a cap which partly screens said filament are arranged in the lamp envelope, the anti-dazzle filament being secured to a flat part of said cap with one of its straight ends connected thereto by means of a spot-welding operation
  • the flat part of the cap includes at least one ridge extending with its raised portion to the end of the filament and extends transverse thereto with its longitudinal direction, the said end of the filament being spotwelded to said ridge, said ridge including a deformation resulting from the spot-welding operation.
  • An electric filament as claimed in claim 1 wherein a tubular conductor is connected to one of the ends of the filament, the conductor being spot-welded to the ridge.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Resistance Heating (AREA)
US00286933A 1971-09-09 1972-09-07 Electric filament lamp Expired - Lifetime US3824421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7112394A NL7112394A (de) 1971-09-09 1971-09-09

Publications (1)

Publication Number Publication Date
US3824421A true US3824421A (en) 1974-07-16

Family

ID=19813986

Family Applications (1)

Application Number Title Priority Date Filing Date
US00286933A Expired - Lifetime US3824421A (en) 1971-09-09 1972-09-07 Electric filament lamp

Country Status (9)

Country Link
US (1) US3824421A (de)
JP (1) JPS4836985A (de)
BE (1) BE788518A (de)
CA (1) CA946456A (de)
DE (1) DE2243717C3 (de)
FR (1) FR2152218A1 (de)
GB (1) GB1348949A (de)
IT (1) IT967198B (de)
NL (1) NL7112394A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058749A (en) * 1976-04-05 1977-11-15 Wagner Electric Corporation Filament shield for sealed headlamp and mounting method therefor
EP0776025A1 (de) * 1995-11-27 1997-05-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Glühlampe mit Abblendkappe und Verfahren zur Herstellung einer derartigen Lampe sowie Abblendkappe für eine elektrische Glühlampe
EP0812004A2 (de) * 1996-06-04 1997-12-10 Honda Giken Kogyo Kabushiki Kaisha Lampenbirne für Fahrzeuge
WO1998038670A1 (de) * 1997-02-25 1998-09-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur herstellung einer elektrischen glühlampe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680655B2 (ja) * 1987-03-16 1994-10-12 沖電気工業株式会社 絶縁膜形成方法
JPH088265B2 (ja) * 1988-09-13 1996-01-29 株式会社東芝 化合物半導体装置とその製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US974891A (en) * 1909-03-11 1910-11-08 Universal Electric Welding Co Method of making metallic fabric.
US2745045A (en) * 1952-07-19 1956-05-08 Sylvania Electric Prod Semiconductor devices and methods of fabrication
US2795722A (en) * 1954-12-29 1957-06-11 Gen Electric Electric incandescent lamp
US2869011A (en) * 1954-03-02 1959-01-13 Philips Corp Electric incandescent lamp for motor-car lighting
US3287591A (en) * 1961-12-13 1966-11-22 Sylvania Electric Prod Tantalum carbide incandescent lamp and method of manufacture thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US974891A (en) * 1909-03-11 1910-11-08 Universal Electric Welding Co Method of making metallic fabric.
US2745045A (en) * 1952-07-19 1956-05-08 Sylvania Electric Prod Semiconductor devices and methods of fabrication
US2869011A (en) * 1954-03-02 1959-01-13 Philips Corp Electric incandescent lamp for motor-car lighting
US2795722A (en) * 1954-12-29 1957-06-11 Gen Electric Electric incandescent lamp
US3287591A (en) * 1961-12-13 1966-11-22 Sylvania Electric Prod Tantalum carbide incandescent lamp and method of manufacture thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058749A (en) * 1976-04-05 1977-11-15 Wagner Electric Corporation Filament shield for sealed headlamp and mounting method therefor
EP0776025A1 (de) * 1995-11-27 1997-05-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Glühlampe mit Abblendkappe und Verfahren zur Herstellung einer derartigen Lampe sowie Abblendkappe für eine elektrische Glühlampe
US5856723A (en) * 1995-11-27 1999-01-05 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Incandescent lamp with low-beam screening cap
EP0812004A2 (de) * 1996-06-04 1997-12-10 Honda Giken Kogyo Kabushiki Kaisha Lampenbirne für Fahrzeuge
EP0812004A3 (de) * 1996-06-04 1998-02-25 Honda Giken Kogyo Kabushiki Kaisha Lampenbirne für Fahrzeuge
US5850124A (en) * 1996-06-04 1998-12-15 Honda Giken Kogyo Kabushiki Kaisha Automobile lamp bulb with welded low beam shield
CN1115712C (zh) * 1996-06-04 2003-07-23 本田技研工业株式会社 汽车灯泡
WO1998038670A1 (de) * 1997-02-25 1998-09-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur herstellung einer elektrischen glühlampe
US5984751A (en) * 1997-02-25 1999-11-16 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Method for manufacturing an electric light bulb

Also Published As

Publication number Publication date
GB1348949A (en) 1974-03-27
DE2243717A1 (de) 1973-03-15
NL7112394A (de) 1973-03-13
DE2243717B2 (de) 1977-09-08
BE788518A (fr) 1973-03-07
JPS4836985A (de) 1973-05-31
DE2243717C3 (de) 1978-05-18
FR2152218A1 (de) 1973-04-20
CA946456A (en) 1974-04-30
IT967198B (it) 1974-02-28

Similar Documents

Publication Publication Date Title
US3824421A (en) Electric filament lamp
GB976445A (en) Electric lamp
US2183952A (en) Fuse lead construction for electric lamps
US3014196A (en) Lamp base
US2341716A (en) Welded joint and method of making the same
US3582704A (en) Manufacture of foil seals
CA1043850A (en) Electric lamp with butt welded molybdenum tungsten conductors
GB1578768A (en) Lamp leads
DE1489616C3 (de) Kurzbogen-Entladungslampe
US3621111A (en) Lead-in conductor for electrical devices
US2247688A (en) Method of making electron discharge devices
US2471424A (en) Electron discharge device
US3265922A (en) Electric lamp
US2082602A (en) Thermionic cathode
US2174382A (en) Electric discharge device and seal therefor
GB502603A (en) Improvements in and relating to electric discharge lamps
US2515699A (en) Glow discharge lamp
US2069814A (en) Electric discharge device
US2100879A (en) Electric lamp
US3211952A (en) Fluorescent lamp operating circuit
US2406827A (en) Electron discharge device
US2482509A (en) Incandescent electricl lamp for series service
US2056861A (en) Electric discharge tube or incandescent lamp
US1738169A (en) Rectifier
US2447159A (en) Lamp terminal structure and method of manufacture