EP0077584B1 - Lampe électrique à incandescence à deux filaments pour véhicule automobile - Google Patents

Lampe électrique à incandescence à deux filaments pour véhicule automobile Download PDF

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Publication number
EP0077584B1
EP0077584B1 EP82201266A EP82201266A EP0077584B1 EP 0077584 B1 EP0077584 B1 EP 0077584B1 EP 82201266 A EP82201266 A EP 82201266A EP 82201266 A EP82201266 A EP 82201266A EP 0077584 B1 EP0077584 B1 EP 0077584B1
Authority
EP
European Patent Office
Prior art keywords
bulb
plane
lamp
pinch
cap
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
EP82201266A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0077584A2 (fr
EP0077584A3 (en
Inventor
Michel Jacrot
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.)
FABRIQUES REUNIES DE LAMPES ELECTRIQUES
Koninklijke Philips NV
Original Assignee
FABRIQUES REUNIES DE LAMPES ELECTRIQUES
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 FABRIQUES REUNIES DE LAMPES ELECTRIQUES, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical FABRIQUES REUNIES DE LAMPES ELECTRIQUES
Publication of EP0077584A2 publication Critical patent/EP0077584A2/fr
Publication of EP0077584A3 publication Critical patent/EP0077584A3/fr
Application granted granted Critical
Publication of EP0077584B1 publication Critical patent/EP0077584B1/fr
Expired legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to a halogen incandescent electric lamp for a motor vehicle, comprising a tubular glass bulb hermetically sealed in a pinch in a longitudinal plane with respect to the tubular bulb, said pinch inserting current inputs penetrating the 'interior of the bulb and on which are stretched in the bulb two filaments, one of which is partially masked by a cup forming a reflective screen welded on one of these current inputs extending to circumvent said cup longitudinally.
  • a lamp allowing the illumination of the road and the intersection, is known for example from French patent No. 2,285,713.
  • the bulb of this known lamp is produced from a glass tube the first end of which is closed by a shank.
  • the internal electrical equipment of the bulb comprising three current inputs, the filaments and the cup, is fixed in the pinch which closes the tubular bulb at its end opposite the pipe.
  • This fixing must be carried out with precision so as to ensure a correct position of the filaments relative to the bulb, to the pinch, to the lamp base receiving said pinch and finally relative to the reflector receiving the lamp on the vehicle.
  • the internal equipment must not be offset during the pinching by applying jaws tightening the softened wall of the glass bulb.
  • This operation tends, in fact, to tilt the internal equipment around an axis transverse to the tubular bulb parallel to the plane of the nip, in particular when the crossing of the current in the nip is ensured by metal sheets connected to internal current inputs entering the bulb and external current inputs exiting the pinch.
  • the object of the invention is to provide a lamp, the internal equipment of which can be easily inserted into the bulb, while ensuring its own transverse setting when the pinching is carried out.
  • a lamp as described in the preamble is characterized in that the current input carrying and bypassing the cup forms a rounded butt located in a longitudinal plane substantially perpendicular to the plane of the nip, and rests on the wall tubular bulb.
  • the curvature of the stock facilitates the introduction of the equipment into the bulb by compensating for the differences in presentation of said equipment relative to the cylindrical wall of the bulb.
  • the plane of the nip is substantially parallel to the opening of the cup, the latter being, therefore, perpendicular to the plane of the butt.
  • the current input forming the butt and carrying the cup can thus be, for example, welded in the vicinity of the bottom of the cup and not near one of its edges, which would risk deforming this edge and altering the cutting of the light beam it defines.
  • the figures show an incandescent electric lamp for a motor vehicle, the tubular bulb 1 of circular section, for example consisting of hard glass, the composition of which contains at least 80% by mass of Si0 2 or a quartz glass. , this expression covering glasses containing at least 95% by mass of Si0 2 .
  • the internal atmosphere of the bulb consists of a rare gas supplemented with a halogenated compound, for example hydro-bromide.
  • An essential aspect of incandescent halogen lamps is the small diameter of their bulb which surrounds the tungsten filament (s) (here 2, 3) very closely in order to present a sufficiently high wall temperature so that the Tungsten-halogen compounds are volatile at this wall temperature and do not condense on the bulb.
  • a first end of the bulb is closed by a cap 4.
  • the other end is hermetically sealed by a pinch 10, substantially planar, obtained by flattening between two jaws of the glass of the softened bulb.
  • the pinch includes three current crossings 5 which are metallic strips to which are connected, on the one hand, three external current inputs 6 coming out of the pinch and, on the other hand, three internal current inputs 7, 8, entering the 'bulb.
  • the three sets of internal, external current flow, current crossing are, in the nip and in its vicinity, substantially located in the same plane.
  • the internal current input 8 is located between its two neighbors 7 and 9.
  • the internal current inputs 7, 8, 9 extend into the bulb and receive the ends of the filaments 2 and 3 for which they supply the power.
  • the filaments 2 and 3 are aligned longitudinally with respect to the tubular bulb, the insertion of the lamp into the reflector of the motor vehicle positioning them near the focus of this reflector.
  • the filament 2 is intended for road lighting, its straight ends are connected to the extensions of the internal current inputs 7 and 8.
  • the filament 3, for the passing light, is partially masked by a cup 11 whose opening , substantially planar is longitudinal with respect to the bulb and, here, parallel to the plane of the nip.
  • the cup 11 is welded by its bottom to the extension of the current inlet 8 which forms, beyond, a rounded butt 12, bypassing the cup 11 in a longitudinal plane substantially perpendicular to the plane of the nip, therefore also to the plane opening the cup.
  • the butt 12 touches transversely, at at least one point 13, the wall of the bulb 1 and thus serves to fix the position of the internal metallic equipment transverse to the plane of the nip.
  • the current inputs are welded on the right face of the metal strips which, in the nip, are therefore offset to the left of the current inputs.
  • This eccentricity tends to cause, when the pinching is carried out, an inclination of the internal electrical equipment to the left.
  • the butt 12 abutting at 13 against the wall of the bulb, to the left of FIG. 2, prevents this inclination.
  • the rounded shape of the stick, and its position around the cup 11, facilitate the introduction of the internal equipment into the bulb during assembly of the lamp.
  • the three internal current inputs 7, 8, 9 are kept aligned in a plane with a metal rod 14, made of molybdenum for example, ensuring the cohesion of the metallic equipment during the manufacture of the lamp and maintaining it during the pinching, thanks to the stock 12 made on the single current input 8.
  • This rod 14 is subsequently destroyed by passing an electric current.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
EP82201266A 1981-10-16 1982-10-12 Lampe électrique à incandescence à deux filaments pour véhicule automobile Expired EP0077584B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119485 1981-10-16
FR8119485A FR2514948B1 (fr) 1981-10-16 1981-10-16 Lampe electrique a incandescence a deux filaments pour vehicule automobile

Publications (3)

Publication Number Publication Date
EP0077584A2 EP0077584A2 (fr) 1983-04-27
EP0077584A3 EP0077584A3 (en) 1983-08-10
EP0077584B1 true EP0077584B1 (fr) 1985-07-31

Family

ID=9263106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201266A Expired EP0077584B1 (fr) 1981-10-16 1982-10-12 Lampe électrique à incandescence à deux filaments pour véhicule automobile

Country Status (6)

Country Link
US (1) US4529908A (enrdf_load_stackoverflow)
EP (1) EP0077584B1 (enrdf_load_stackoverflow)
JP (1) JPS5875761A (enrdf_load_stackoverflow)
CA (1) CA1181121A (enrdf_load_stackoverflow)
DE (1) DE3265096D1 (enrdf_load_stackoverflow)
FR (1) FR2514948B1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4994707A (en) * 1988-09-22 1991-02-19 Patent-Treuhand Gesellschaft fur elektrische Glum.b.H. Vibration-resistant single-ended halogen incandescent lamp
DE10306178A1 (de) * 2003-02-13 2004-08-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Glühlampe für Fahrzeugscheinwerfer
CN105593970B (zh) * 2013-10-09 2017-10-20 皇家飞利浦有限公司 抗振动机动车前照明灯

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691650A (en) * 1951-05-25 1953-05-20 Lumalampan Ab Low-voltage incandescent lamp, especially for christmas-tree illumination consistingof series-connected lamps
GB1168604A (en) * 1967-05-25 1969-10-29 Westinghouse Electric Corp Electric Lamp with Improved Light Source Mount.
NL7003667A (enrdf_load_stackoverflow) * 1970-03-14 1971-09-16
GB1475739A (en) * 1974-09-19 1977-06-01 Thorn Electrical Ind Ltd Lamps with internal sheet metals supports
JPS5842592B2 (ja) * 1975-12-18 1983-09-20 株式会社東芝 カンガタデンキユウ オヨビ ソノセイゾウホウホウ
GB2050693B (en) * 1979-06-05 1983-04-07 Thorn Electrical Ind Ltd Electric filament lamps
NL184397C (nl) * 1979-06-29 1989-07-03 Philips Nv Halogeengloeilamp.

Also Published As

Publication number Publication date
FR2514948B1 (fr) 1985-06-07
DE3265096D1 (en) 1985-09-05
US4529908A (en) 1985-07-16
EP0077584A2 (fr) 1983-04-27
EP0077584A3 (en) 1983-08-10
JPH0328776B2 (enrdf_load_stackoverflow) 1991-04-22
CA1181121A (en) 1985-01-15
JPS5875761A (ja) 1983-05-07
FR2514948A1 (fr) 1983-04-22

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