EP0845152A1 - Dispositif faisant ecran pour la lampe du projecteur d'un vehicule a moteur et procede de fabrication de ce dispositif - Google Patents

Dispositif faisant ecran pour la lampe du projecteur d'un vehicule a moteur et procede de fabrication de ce dispositif

Info

Publication number
EP0845152A1
EP0845152A1 EP97925900A EP97925900A EP0845152A1 EP 0845152 A1 EP0845152 A1 EP 0845152A1 EP 97925900 A EP97925900 A EP 97925900A EP 97925900 A EP97925900 A EP 97925900A EP 0845152 A1 EP0845152 A1 EP 0845152A1
Authority
EP
European Patent Office
Prior art keywords
shading
shading device
welding
motor vehicle
edge
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.)
Granted
Application number
EP97925900A
Other languages
German (de)
English (en)
Other versions
EP0845152B1 (fr
Inventor
Peter Helbig
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0845152A1 publication Critical patent/EP0845152A1/fr
Application granted granted Critical
Publication of EP0845152B1 publication Critical patent/EP0845152B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/003—Auxiliary devices for installing or removing discharge tubes or lamps
    • H01J9/006—Auxiliary devices for installing or removing discharge tubes or lamps for fluorescent lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/10—Shields, screens, or guides for influencing the discharge

Definitions

  • the invention relates to a shading device for a motor vehicle headlight lamp and a manufacturing method for such a shading device according to the preamble of claim 1 and claim 3, respectively.
  • the shading device is usually located in the interior of the lamp bulb of one with two incandescent filaments, namely the low beam and the high-beam incandescent lamp, equipped motor vehicle headlight lamp.
  • the shading device is usually a dimming cap which partially surrounds the dipped-beam incandescent filament, while the high-beam incandescent filament is arranged outside the dimming cap.
  • Such a shading device is disclosed, for example, in German Patent DD 224 445.
  • This patent describes a two-filament halogen incandescent lamp with a trough-like dimming cap for the dipped-light incandescent filament.
  • the trough-like anti-dazzle device has a flat welding lug formed on the anti-dazzle device edge, which is used for welding to one end of the dipped-beam incandescent filament and which is also used by the gripping tools of the assembly and production machines.
  • the sweat plume is larger here than would be required for this purpose.
  • the anti-dazzle caps In order to produce the anti-dazzle caps from a sheet metal or a sheet metal strip, a plurality of anti-dazzle caps are usually formed and punched out in rows. The distance between two successive anti-glare caps when punching out is greater than the greatest length dimension of the anti-glare cap, so that a relatively high proportion of the metal sheet remains unused as waste when the anti-glare caps are produced.
  • the welding vane is provided with a recess, the shape of which is essentially determined by the shape of a region of the shading device opposite the welding vane.
  • This measure allows a material saving of up to 15% and therefore lowers the manufacturing costs for the shading device accordingly, without thereby impairing the functionality of the shading device.
  • the punching out and shaping of the shading device according to the invention do not require any additional work step.
  • the surface of the shading device which is effective for shading is advantageously curved and, particularly advantageously, trough-shaped. As a result, the shading device can be arranged in this way that it surrounds the filament to be shaded from several sides.
  • the shading device according to the invention also advantageously has a wall region, which is raised in comparison with the other wall parts of the shading device and is referred to as the shading nose, and which lies opposite the welding lug.
  • This raised wall area serves for better shading of the luminous element shaded by the shading device against a second luminous element arranged outside the shading device.
  • the outline or the edge of the recess in the welding lug advantageously has approximately the same shape as the edge line of the shading nose projected onto a plane.
  • the welding vane of the shading device according to the invention is advantageously provided with a transverse rib, which enables a projection to be welded to one end of the shaded filament.
  • the recess in the shading device according to the invention advantageously extends from the edge of the welding vane to the transverse rib.
  • the remaining webs of the welding lug, which are arranged on both sides of the recess and protrude beyond the transverse rib, are sufficient as an attachment for the gripping tools of the automatic placement and production machines.
  • a multiplicity of shading devices are formed and punched out in rows from a sheet metal, the distance between two successive shading devices when punching out of the sheet metal according to the invention being smaller than the largest length dimension of a shading device.
  • the greatest length dimension of a shading device is defined by the length of the longest side of the rectangle with the smallest circumference, which is the edge line of the shading device projected onto a plane running parallel to the welding vane on a scale of 1: 1, including its Sweat flag - completely covered.
  • Figure 1 is a plan view of the preferred embodiment of the shading device according to the invention
  • Figure 2 is a sectional side view of the shading device shown in Figure 1
  • Figure 3 is a front view of the shading device shown in Figure 1
  • Figure 4 is a plan view (schematic) of a sheet metal strip with several punched shading devices according to the preferred embodiment
  • the preferred exemplary embodiment of the shading device according to the invention shown in FIGS. 1 to 3 is a dimming cap 1 made of molybdenum for a motor vehicle headlight lamp, in particular for a two-filament halogen incandescent lamp.
  • Such lamps are commercially available under the designation H4 lamp. 49117 PC ⁇ YDE97 / 01123
  • the anti-dazzle device 1 of the preferred embodiment • of the invention is trough-shaped. It has an essentially flat bottom 2 provided with two welding beads 2a.
  • the anti-dazzle device also has an essentially flat welding lug 3 formed on its edge.
  • the wall area 4a of the anti-dazzle device 1 opposite the welding lug 3 is raised in comparison to the other wall areas 4b of the anti-dazzle device 1 and forms the so-called shading nose 4a, which shades the low-beam and high-beam incandescent filaments (not shown) against one another.
  • the area effective for shading the low-beam incandescent filament is formed by the base 2 and the curved wall areas 4a, 4b of the anti-dazzle device 1.
  • the shape of the anti-dazzle device 1 is reminiscent of the hull of a boat.
  • the welding lug 3 would be formed on the stern of the fuselage and the shading nose 4a would form the raised bow of the fuselage.
  • the anti-dazzle device 1 is mirror-symmetrical with respect to the mirror plane A-A running in the middle, perpendicular to the base 2 and in the longitudinal direction through the anti-dazzle device 1.
  • the welding lug 3 formed on the edge of the surface 2, 4a, 4b effective for shading is equipped with a transverse rib 3a, which is used for projection welding with one end of the low-beam incandescent filament.
  • the welding lug 3 has a cutout 5 which extends from the edge of the welding lug 3 to the transverse rib 3a.
  • the edge of the recess 5 of the welding vane 3 has approximately the same shape or contour as the edge line 6 of the shading nose 4a of the anti-dazzle cap 1 projected onto a plane.
  • the largest length dimension of the anti-dazzle device 1 measured in the longitudinal direction from the shading nose 4a to the outer edge of the webs 7a, 7b running perpendicular to the mirror plane AA, measures 12.7 mm.
  • the maximum depth of the recess 5 is 1.7 mm.
  • the depth of the trough-like anti-dazzle device 1, without taking the welding beads 2a into account, is approximately 2.7 mm.
  • the maximum height of the shading nose 4a, measured from the bottom 2, is approximately 4.1 mm. The shading nose 4a thus projects above the remaining wall areas 4b in height by approximately 1.4 mm.
  • the anti-dazzle caps 1, 1 ', 1 "according to the invention are formed and punched out in rows in the same orientation from a sheet of molybdenum sheet 8 in the same operation (FIG. 4).
  • the distance between two successive anti-dazzle caps 1, 1' or 1 ', 1 "smaller than the largest length dimension of a dimming cap 1, 1', 1".
  • a cutout 5, 5 ' is created in the welding lug 3, 3' of each dimming cap 1, 1 ', into which the immediate the following anti-dazzle cap 1 ', 1 "engages.
  • the shading nose 4a ', 4a "of the next anti-dazzle device 1', 1" is formed from the sheet metal material punched out of the welding lug 3, 3 'of the immediately preceding anti-dazzle device 1, 1'.
  • the shape of the recess 5, 5 'in the welding lug 3, 3' is thus determined by the edge of the shading nose 4a ', 4a ".
  • All anti-dazzle caps 1, 1', 1" are shaped identically.
  • the edge of the recess 5 in the welding lug 3 therefore has approximately the same shape as the edge line 6 of the shading nose 4a of the anti-dazzle device 1 projected onto a plane.
  • the correspondence applies only approximately because the shading nose 4a is simultaneously subjected to a shaping process during the stamping process.
  • the invention is not limited to the exemplary embodiment explained in more detail above.
  • the invention can also be applied to a shading device according to the German patent application with the official file number 196 06 876.2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Le dispositif décrit, notamment une coupelle pour l'éclairage de croisement ou un écran, fait écran par rapport au corps luminescent de la lampe du projecteur d'un véhicule à moteur. Le dispositif (1) est constitué d'une pièce en tôle et comprend un talon de soudage (3) façonné au bord de la surface (2, 4a, 4b), faisant écran, du dispositif (1). Le talon de soudage (3) comprend une découpure (5) dont la forme est sensiblement déterminée par la forme d'une zone (4a) de la paroi du dispositif (1) opposée au talon de soudage (3). Ces dispositifs (1) sont façonnés et découpés en série dans une tôle métallique. L'écartement entre deux dispositifs successifs (1) est inférieur à la plus grande dimension de chaque dispositif (1). Ce dispositif (1) permet d'économiser jusqu'à 15 % de matériau sans que son bon fonctionnement ne soit affecté.
EP97925900A 1996-06-20 1997-06-04 Dispositif faisant ecran pour la lampe du projecteur d'un vehicule a moteur et procede de fabrication de ce dispositif Expired - Lifetime EP0845152B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624688 1996-06-20
DE19624688A DE19624688A1 (de) 1996-06-20 1996-06-20 Abschattungsvorrichtung für eine Kraftfahrzeugscheinwerferlampe und Herstellungsverfahren für eine derartige Abschattungsvorrichtung
PCT/DE1997/001123 WO1997049117A1 (fr) 1996-06-20 1997-06-04 Dispositif faisant ecran pour la lampe du projecteur d'un vehicule a moteur et procede de fabrication de ce dispositif

Publications (2)

Publication Number Publication Date
EP0845152A1 true EP0845152A1 (fr) 1998-06-03
EP0845152B1 EP0845152B1 (fr) 2000-10-18

Family

ID=7797518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97925900A Expired - Lifetime EP0845152B1 (fr) 1996-06-20 1997-06-04 Dispositif faisant ecran pour la lampe du projecteur d'un vehicule a moteur et procede de fabrication de ce dispositif

Country Status (11)

Country Link
EP (1) EP0845152B1 (fr)
JP (1) JPH11511896A (fr)
KR (1) KR100292449B1 (fr)
CN (1) CN1106672C (fr)
AT (1) ATE197103T1 (fr)
BR (1) BR9706545A (fr)
DE (2) DE19624688A1 (fr)
ES (1) ES2152094T3 (fr)
HU (1) HU220312B (fr)
TW (1) TW458239U (fr)
WO (1) WO1997049117A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5817709A (en) * 1990-04-26 1998-10-06 Cytec Technology Corp. Sulfonimide catalysts polyfunctional material combination

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006060029A1 (de) 2006-12-19 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Abblendkappe mit Wendel
DE102006060772A1 (de) * 2006-12-21 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Abblendkappe für Zweiwendelhalogenlampe unterschiedlicher Leistung zur Nutzlichtherhöhung
DE102015207019A1 (de) * 2015-04-17 2016-10-20 Osram Gmbh Kraftfahrzeugscheinwerferlampe
CN106090776B (zh) * 2016-07-22 2019-06-11 张德祥 一种摩托车前大灯
CN116872569A (zh) * 2023-06-20 2023-10-13 中国第一汽车股份有限公司 一种汽车透光包覆件及生产方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE406227A (fr) * 1933-11-17
BE632453A (fr) * 1962-05-16
GB1430070A (en) * 1972-08-11 1976-03-31 Thorn Electrical Ind Ltd Manufacture of electrical devices having sealed envelopes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9749117A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5817709A (en) * 1990-04-26 1998-10-06 Cytec Technology Corp. Sulfonimide catalysts polyfunctional material combination

Also Published As

Publication number Publication date
KR19990037699A (ko) 1999-05-25
HUP9901388A2 (hu) 1999-08-30
BR9706545A (pt) 1999-07-20
HUP9901388A3 (en) 1999-11-29
TW458239U (en) 2001-10-01
ATE197103T1 (de) 2000-11-15
ES2152094T3 (es) 2001-01-16
DE19624688A1 (de) 1998-01-02
HU220312B (hu) 2001-12-28
KR100292449B1 (ko) 2001-08-07
CN1106672C (zh) 2003-04-23
WO1997049117A1 (fr) 1997-12-24
CN1196825A (zh) 1998-10-21
JPH11511896A (ja) 1999-10-12
EP0845152B1 (fr) 2000-10-18
DE59702494D1 (de) 2000-11-23

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