EP0178595B1 - Dispositif de fixation démontable pour une lampe électrique dans un projecteur - Google Patents

Dispositif de fixation démontable pour une lampe électrique dans un projecteur Download PDF

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Publication number
EP0178595B1
EP0178595B1 EP85112876A EP85112876A EP0178595B1 EP 0178595 B1 EP0178595 B1 EP 0178595B1 EP 85112876 A EP85112876 A EP 85112876A EP 85112876 A EP85112876 A EP 85112876A EP 0178595 B1 EP0178595 B1 EP 0178595B1
Authority
EP
European Patent Office
Prior art keywords
reflector
lamp
holding device
inclined surface
clamp
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
EP85112876A
Other languages
German (de)
English (en)
Other versions
EP0178595A1 (fr
Inventor
Max Pouce
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.)
NEIMAN
Original Assignee
Neiman SA
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 Neiman SA filed Critical Neiman SA
Publication of EP0178595A1 publication Critical patent/EP0178595A1/fr
Application granted granted Critical
Publication of EP0178595B1 publication Critical patent/EP0178595B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/196—Wire spring attachments

Definitions

  • the invention relates to a removable holding device for headlight bulbs, in which the light bulbs are provided with an insert collar with angled fitting elements for positioning the light bulb in an opening in the reflector of the headlight.
  • Such assemblies consisting of an incandescent lamp and reflector are used in particular in automotive headlights.
  • the light bulb must be easy to replace in the event of a defect, but must also be securely held while driving.
  • a piano wire clip is generally used, which is bent in a more or less complicated form and at least at one point the part of the incandescent lamp protruding from the reflector at at least one point, i.e. on the insert collar or on the lamp base, elastically supported.
  • Holding devices of this known type are associated with some difficulties which are related to the elasticity of the connection between the incandescent lamp and the reflector.
  • the constant elastic pressure generally exerted on a very small area of the reflector causes a deformation in the contact zone, as a result of which the effectiveness of the holder and the operating behavior of the headlamp as a whole are impaired.
  • the object of the invention is to improve a device of the type mentioned in such a way that it is simple and economical to manufacture, safe and durable in operation and exerts a very low pressure on the reflector.
  • This object is achieved in that the device has an elastic clip which is provided with essentially rigid ends oriented at right angles to the lamp axis, a clip end being held between at least one cam bevel surface on the reflector and the insert collar of the incandescent lamp by a wedge or clamping action or the related cam bevels are arranged on the insert collar.
  • the effective part of the holder consists of essentially rigid elements for support between the insert collar and the inclined surface on the reflector cam.
  • This bracket automatically adjusts itself to any deviations in the lamp size or the reflector opening due to the wedge or clamping action against the oblique cam, the residual pressure on the insert collar only making up a relatively small fraction of the force acting on the rigid clamp ends.
  • the bulb is held securely in the reflector opening because the forces that tend to push the bulb out or tilt it out of the opening are immediately counteracted by the rigid system of the assembly consisting of the lamp, clamping element and insert collar.
  • the reflector 1 has a central opening 2, in which an incandescent lamp is fastened with an insert collar 3 in a certain angular position.
  • the reflector 1 has outer projections or cams 4, each with an inclined surface 5 oriented towards the opening 2, an essentially rigid clamp end 6 being clamped or wedged between the insert collar 3 of the incandescent lamp and the cam bevel 5.
  • the action of the clip on the clip end 6 takes place essentially at right angles to the lamp axis, at least as indicated by the arrow F.
  • any force used to move or tilt the incandescent lamp, ie its insert collar 3, increases the clamping or wedge effect of the clamp end 6 against the cam bevel surface 5, so that the incandescent lamp is properly held in place, particularly in the case of vibrations such as occur in motor vehicles.
  • the force acting on the end of the clamp 6 in the direction of the arrow F is transmitted to the inclined surface 5 only by its right-angled component, this component being in any case less than the force F.
  • the latter can be chosen to be low because it is not directly involved in the bracket. It can thus be seen that the component of the force F acting at right angles on the insert collar 3 can be very low, with the wedge or clamping action of the clamp end 6 against the inclined surface 5 achieving a secure and permanent holding.
  • the clip consists of a piano wire bracket 7 with two diverging arms 8, which is pivotally mounted on the reflector 1 in the region 9 between the arms 8 about an axis or a pin 10.
  • the arms 8 each open into an essentially rigid end 6, which can be prepared by simply bending the wire of the clamp 7.
  • the clamp 7 Before inserting an incandescent lamp, the clamp 7 is in the rest position and swung out to release the reflector opening 2.
  • the incandescent lamp is inserted into the opening 2 and brought into the correct angular position using suitable aids, for example in a known manner by means of a lamp tongue which engages in a groove in the opening 2; The tongue and groove are not shown here.
  • the bracket or the clamp 7 is pivoted about the axis 10 until its ends 6 come into abutment against an inclined surface 11 on the outside of the cam 4 on the reflector 1.
  • the present invention is not limited to the elastic embodiment described above.
  • the elastic element can be replaced by fasteners in the form of horizontal or vertical tilting or swivel locks, with at least one semi-rigid end that is essentially perpendicular to the lamp axis between at least one inclined surface on the reflector cam and the insert collar of the incandescent lamp has a wedge or clamping effect brings about or the inclined surface and the bolt end on the reflector or on the fastener can be reversed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (3)

1. Dispositif de fixation démontable pour une lampe électrique dans un réflecteur, dans lequel la lampe comporte une collerette d'arrêt (3) munie de moyens de positionnement angulaires de ladite lampe dans une ouverture (2) dans le réflecteur (1) du projecteur, caractérisé par le fait que le dispositif comprend une pince élastique (7) munie d'extrémités sensiblement rigides (6) disposées sensiblement orthogonales à l'axe de la lampe, une extrémité de pince étant maintenue avec effet de coin ou de pince entre au moins une surface inclinée (5) correspondante du réflecteur (1) et ladite collerette (3) de la lampe électrique, ou bien la rampe inclinée (5) correspondante est disposée sur la collerette d'arrêt (3).
2. Dispositif de fixation selon la revendication 1, caractérisé par le fait que la pince élastique (7) est à deux branches (8) et est monté pivotante par sa portion (9) comprise entre les branches (8) autour d'un axe ou tenon (10) du réflecteur.
3. Dispositif de fixation selon la revendication 1, caractérisé par le fait que ladite surface inclinée (5) est prolongée vers l'extérieur du réflecteur (1) par un plan (11) incliné en sens inverse.
EP85112876A 1984-10-19 1985-10-11 Dispositif de fixation démontable pour une lampe électrique dans un projecteur Expired EP0178595B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416020A FR2572164B1 (fr) 1984-10-19 1984-10-19 Dispositif de maintien demontable d'une lampe electrique dans un reflecteur
FR8416020 1984-10-19

Publications (2)

Publication Number Publication Date
EP0178595A1 EP0178595A1 (fr) 1986-04-23
EP0178595B1 true EP0178595B1 (fr) 1989-05-10

Family

ID=9308813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112876A Expired EP0178595B1 (fr) 1984-10-19 1985-10-11 Dispositif de fixation démontable pour une lampe électrique dans un projecteur

Country Status (3)

Country Link
EP (1) EP0178595B1 (fr)
DE (1) DE3570116D1 (fr)
FR (1) FR2572164B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713330C2 (de) * 1987-04-21 1993-12-23 Hella Kg Hueck & Co Glühlampenhalterung für Kraftfahrzeugscheinwerfer
DE19911347B4 (de) * 1999-03-15 2004-12-30 NORKA Norddeutsche Kunststoff- und Elektro-Gesellschaft Stäcker mbH & Co. KG Leuchte für eine langgestreckte Lampe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE512215A (fr) *
FR1529782A (fr) * 1967-05-08 1968-06-21 Sev Marchal Perfectionnements apportés aux projecteurs tels que ceux des véhicules automobiles
FR2241966A5 (fr) * 1973-08-21 1975-03-21 Cibie Projecteurs

Also Published As

Publication number Publication date
DE3570116D1 (en) 1989-06-15
FR2572164A1 (fr) 1986-04-25
FR2572164B1 (fr) 1988-07-22
EP0178595A1 (fr) 1986-04-23

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