EP1633024B1 - Steckfassung für eine Keilbasislampe mit Zentrierring - Google Patents

Steckfassung für eine Keilbasislampe mit Zentrierring Download PDF

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Publication number
EP1633024B1
EP1633024B1 EP05291829A EP05291829A EP1633024B1 EP 1633024 B1 EP1633024 B1 EP 1633024B1 EP 05291829 A EP05291829 A EP 05291829A EP 05291829 A EP05291829 A EP 05291829A EP 1633024 B1 EP1633024 B1 EP 1633024B1
Authority
EP
European Patent Office
Prior art keywords
base
lamp
contact
socket according
centring
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.)
Not-in-force
Application number
EP05291829A
Other languages
English (en)
French (fr)
Other versions
EP1633024A1 (de
Inventor
Gérard Dietz
Laurent Meister
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1633024A1 publication Critical patent/EP1633024A1/de
Application granted granted Critical
Publication of EP1633024B1 publication Critical patent/EP1633024B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/09—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for baseless lamp bulb
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the present invention generally relates to the field of sockets for filament lamps with a glass base. More particularly, the invention relates to a lampholder for glass base suitable for use in lighting and / or signaling devices for motor vehicles, including traffic lights.
  • Lamps with a base of glass are of interest for integration into a traffic light of a motor vehicle. Indeed, these lamps have the advantage of a smaller footprint compared to bayonet lamps used more conventionally in traffic lights. This feature of a smaller footprint is likely to facilitate the achievement of more compact traffic lights and providing a better optimization of the surfaces of optical elements, such as reflector or other, included in these lights.
  • W16W type lamps can advantageously replace P21 W bayonet lamps in certain traffic lights.
  • the use of lamps with a glass base is, however, hampered by the difficulties encountered by manufacturers in maintaining a close tolerance for the positioning of the filament in the bulb of the lamp.
  • the tolerance on the distance between the filament and lamp retention grooves may be of the order of ⁇ 2.3 mm.
  • the filament of the lamp must occupy a specific position with respect to optical elements included in the lamp or the projector, and this in order to obtain the optical performance sought. This results in a very tight dimensional tolerance for the mechanical connection between the lamp and its socket.
  • FIG.6 A sectional view of the socket according to EP0404135B1 is shown at the Fig.6 in this application.
  • This socket according EP0404135B1 comprises hook-shaped electrical contact blades 6a and 6b and a sheath 7 for holding the base of the lamp in the socket.
  • the blades 6a and 6b are fixed on the substrate 8 and are arranged to clamp the lamp base 5a together and to make electrical contact with electrodes thereof.
  • the blades 6a and 6b each have a hook shape and are conventionally made of brass or phosphorous copper.
  • the sheath 7 is made of an electrically insulating material and is clipped onto the substrate.
  • the sheath 7 is provided with two hooks 7a.
  • the hooks 7a fit into grooves in the base 5a and serve to maintain the position of the lamp.
  • the combined action of the blades 6a, 6b and hooks 7a on the base 5a ensures retention of the lamp in the socket, but this action is however not sufficient to meet all the constraints that apply during the design of a traffic light, and in particular in terms of the vibratory response of the traffic light.
  • the main object of the present invention is to provide the prior art with the improvements necessary for wider use of lamps with a glass base in lighting and / or signaling devices for a motor vehicle.
  • the present invention aims first of all at providing a lamp base with a glass base comprising a base and at least two electrical contact blades mounted in the base for electrically connecting the electrodes of the lamp to a power supply circuit.
  • electric contact blades each having a resilient clip forming part into which the glass base of the lamp is inserted.
  • the base comprises a centering piece made in the form of a ring extending on a first face, by at least one leg adapted to provide a fixed positioning of the centering piece on the base, and having, on a second face, centering elements forming a portion in contact with the base of the bulb of the lamp in order to center in a predetermined manner the lamp in the base and to oppose a movement of the lamp relative to the base.
  • base designates the portion of the bulb which is adjacent to the lamp base, this portion generally having at least partially a flared shape or a shape with inclined faces in the lamps with a glass base.
  • the invention thus provides a socket perfectly adapted to use in a traffic light for a motor vehicle.
  • the contact blades are made of spring steel. According to a preferred embodiment, the contact blades are made of stainless steel strip steel for spring.
  • the resilient clamp portion of an electric contact blade is designed to exert on the base a clamping force adapted to the type of lamp, W16W or W5W.
  • the centering piece and the base can easily be made of different materials, the material of the centering piece being chosen to be adapted to direct thermal contact with the base of the bulb.
  • This separation into two separate parts also has the advantage of keeping a standard base and only change the centering part when you want to adapt the socket according to the invention to different types of lamp, for example, W16W or W5W.
  • the centering piece is made of polycarbonate and the base is made of polypropylene.
  • the centering piece comprises two axially symmetrical lugs extending from its first face and able to snap onto the base, and on the second face, at least four centering elements forming the part in contact with the base.
  • at least one centering element has the shape of a wedge whose inclined face is in contact with a flared or inclined portion of the base of the bulb.
  • the resilient part forming a gripper of a contact blade comprises two resilient contact tongues in facing each other and forming between them a nip zone, the contact tongues having a substantially curved profile and comprising free ends spaced apart from each other and oriented towards the bulb.
  • the socket according to the invention is integrated in a lamp holder for lighting and / or signaling device comprising several sockets.
  • the invention also relates to a lighting and / or signaling device, in particular for a motor vehicle, in which is included at least one socket as briefly described above.
  • the socket according to the invention is integrated in a lamp holder intended to be mounted on a block of traffic lights for a motor vehicle.
  • a lamp holder for traffic lights is conventionally formed of a molded plastic body equipped with mechanical assembly means and electrical connection. Lamps are inserted into corresponding lampholders of the lamp holder in order to be connected to the vehicle power supply circuit and to form the light sources of the different lights of the signal block. After insertion of the lamps, the lamp holder is assembled on the signal block and closes a rear opening thereof.
  • the socket according to the invention essentially comprises a base 1, electrical contact blades 20 and 21 and a centering ring 3.
  • a lamp with a glass base 5, for example of the W16W type, is inserted into the socket.
  • the base 1 is integrally molded with the body 4 of the lamp holder and thus forms a single piece therewith.
  • Body 4 is only partially shown Fig.1 .
  • the base 1 and the body 4 are made here in the same low-cost material such as for example polypropylene.
  • the base 1 is preferably made in the form of a generally hollow body.
  • conductive strips 40 and 41 forming part of a cut-off electrical circuit of the lamp holder are provided for connecting the contact blades 20 and 21 to the vehicle power supply circuit.
  • the conductive strips 40 and 41 have folded ends (the folded end 400 of the band 40 is shown in FIG. Fig.2 ) which engage in female connecting portions 200 and 210 of the contact blades 20 and 21, respectively.
  • the contact blades 20 and 21 are shown in detail in FIG. Fig.3 , with the same positioning relative to each other as they once mounted in the base 1.
  • the contact blades 20 and 21 have in this embodiment substantially identical shapes and dimensions. Of course, the contact blades may be different in other embodiments.
  • each contact blade 20, 21 comprises an elastic part forming a clamp 201, 211 into which the glass base of the lamp 5 is inserted.
  • the gripper portions 201, 211 are housed in an upper open cavity 10 ( Fig.2 ) of the base 1.
  • Four notches 11 are also provided in the base 1 in order to be able to install the gripper parts 201 and 211 in the cavity 10.
  • a gripper portion 201, 211 comprise two elastic contact tongues facing one another and forming between them a nip area.
  • the contact tabs have a substantially curved profile.
  • the nip region between the contact tabs is located at generally convex surface portions thereof.
  • the facing contact tabs are connected in their lower parts and form at their level a common portion 202, 212 which extends to the female connection part 200, 210.
  • the contact tabs In their upper parts, the contact tabs have free ends oriented towards the bulb of the lamp 5. These free ends are spaced apart from each other by the effect of the curved profile of the contact tongues, thus facilitating the insertion of the base of the lamp 5 between the contact tabs.
  • the contact blades 20 and 21 are preferably of spring steel. More specifically, in this preferred embodiment, the contact blades are made of stainless steel strip steel for spring.
  • the collet elastic portions 201, 211 are designed to exert on the base a nipping force adapted to the type of lamp, W16W or W5W.
  • the terms "correct retention” must be interpreted in the context of lighting and automobile signaling.
  • the retention of the lamp 5 in the socket will be judged correct if maximum displacement stresses of the lamp relative to the socket are satisfied when specific mechanical stresses, such as vibrations and shocks, are applied to the lamp assembly. socket.
  • specific mechanical stresses such as vibrations and shocks
  • the centering ring 3 generally has a shape of hollow cylinder of revolution which is extended in its lower part by two axially symmetrical lugs 30 and 31. In its upper part, the centering ring 3 comprises four centering elements 32 which, in this preferred embodiment, are each in the form of a wedge.
  • the centering ring 3 is made of a material capable of withstanding the thermal stresses imposed by the lamp 5, and in particular by direct contact with the bulb of the lamp 5.
  • the ring of centering 3 can be made of polycarbonate (PC).
  • the tabs 30 and 31 have the function of locking by clipping the centering ring 3 on the base 1.
  • the lugs 30 and 31 respectively comprise protruding lugs 310 and 311 located at their lower free ends.
  • a positioning of the ring 3 in the base 1 along the two perpendicular axes Y and Z is obtained by means of four abutment elements 14 of the base 1.
  • the stops 14 are shown at the Fig.2 .
  • the four stops 14 are located around the axis of symmetry along X of the base 1, on a circle perpendicular to this axis of symmetry and centered on it.
  • the stops 14 are separated from each other by an angle of 45 °.
  • Each stop 14 has a face 140 oriented towards the axis of symmetry of the base 1, which is intended to come into positioning contact with an outline wall 34 of the ring 3.
  • a face 141 and a flange 142 which are also provided in each of the stops 14 for positioning the socket in an optical device such as reflector or the like.
  • stops 14 should not be interpreted in a limiting manner, because these stops 14 may be modified by those skilled in the art to adapt the sleeve according to the invention to different possible applications.
  • the abutments 14 may be replaced by a collar provided with notches provided for mounting the contact blades 20 and 21 in the base 1.
  • the corners 32 of the ring 3 each comprise an inclined face intended to come into contact with the bulb of the lamp 5, at a base 50 of the bulb.
  • the base of the bulb is a lower part of the bulb, adjacent to the base of the lamp. As shown in Fig.5 , in this embodiment adapted to a W16W lamp, the base 50 is located between a cylindrical portion of revolution 51 of the bulb and the base of the lamp 5.
  • the contact of the corners 32 with the base 50 occurs at a flared portion 52 thereof
  • the bulb base of the W5W lamp comprises two substantially plane and axially symmetrical inclined faces at which the contact with the corners 32 preferably intervenes.
  • centering elements 32 should not be interpreted in a limiting manner, since the number and shape of these elements 32 may be modified by those skilled in the art in order to adapt the socket according to the invention to different possible applications.
  • the centering elements 32 may be replaced by a flange providing continuous contact over a full circumference of the base 50.

Claims (10)

  1. Glassockellampenfassung mit einem Kragen (1) und wenigstens zwei elektrischen Kontaktstreifen (20, 21), die in dem Kragen (1) angebracht sind, um Elektroden der Lampe (5) an einen Speisestromkreis elektrisch anzuschließen, wobei die Kontaktstreifen (20, 21) jeweils ein klemmenförmiges elastisches Teil (201, 211) aufweisen, in das der Glassockel der Lampe (5) eingesetzt wird,
    dadurch gekennzeichnet, dass der Kragen (1) ein Zentrierstück (3) aufweist, das in Form eines Ringes ausgeführt ist, der auf einer ersten Seite durch wenigstens einen Arm (30, 31) verlängert ist, der ein festes Positionieren des Zentrierstücks (3) auf dem Kragen (1) zu gewährleisten vermag, und der auf einer zweiten Seite über Zentrierelemente (32) verfügt, die ein Teil bilden, das mit der Basis (50) des Kolbens der Lampe (5) in Kontakt ist, um die Lampe (5) in dem Kragen (1) in vorbestimmter Weise zu zentrieren und ein Verschieben der Lampe (5) bezüglich des Kragens (1) zu verhindern.
  2. Fassung nach Anspruch 1,
    dadurch gekennzeichnet, dass die Kontaktstreifen (20, 21) aus Federstahl oder rostfreiem Federbandstahl ausgeführt sind.
  3. Fassung nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass das klemmenförmige elastische Teil (201, 211) so ausgebildet ist, dass es auf den Sockel eine für den Typ der Lampe (5) geeignete Klemmkraft ausübt.
  4. Fassung nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, dass das Zentrierstück (3) und der Kragen (1) aus unterschiedlichen Werkstoffen ausgeführt sind, wobei der Werkstoff des Zentrierstücks (3) so gewählt ist, dass ein unmittelbarer thermischer Kontakt mit der Basis (50) herstellbar ist.
  5. Fassung nach Anspruch 4,
    dadurch gekennzeichnet, dass das Zentrierstück (3) auf Basis von Polycarbonat (PC) und der Kragen (1) auf Basis von Polypropylen (PP) ausgeführt ist.
  6. Fassung nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass das Zentrierstück (3) zwei axial symmetrische Arme (30, 31) umfasst, die sich von dessen erster Seite aus erstrecken und sich in den Kragen (1) einzuklipsen vermögen, und auf der zweiten Seite wenigstens vier Zentrierelemente (32) aufweisen, die das mit der Basis (50) in Kontakt stehende Teil bilden.
  7. Fassung nach Anspruch 6,
    dadurch gekennzeichnet, dass wenigstens eines der Zentrierelemente (32) die Form eines Keils hat, von dem eine schräge Seite mit einem sich weitenden oder schrägen Teil (52) der Basis (50) in Kontakt ist.
  8. Fassung nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, dass das klemmenförmige elastische Teil (201, 211) eines der Kontaktstreifen (20, 21) zwei elastische Kontaktzungen aufweist, die einander gegenüberliegen und zwischen sich einen Klemmbereich bilden, wobei die Kontaktzungen ein im Wesentlichen bogenförmiges Profil haben und freie Enden aufweisen, die voneinander entfernt und zum Lampenkolben gerichtet sind.
  9. Fassung nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass sie in einen Lampenhalter (4) für eine Beleuchtungs-und/oder Signalgebungsvorrichtung integriert ist.
  10. Beleuchtungs- und/oder Signalgebungsvorrichtung, insbesondere für Kraftfahrzeuge,
    dadurch gekennzeichnet, dass sie wenigstens eine Fassung nach einem der Ansprüche 1 bis 9 aufweist.
EP05291829A 2004-09-07 2005-09-02 Steckfassung für eine Keilbasislampe mit Zentrierring Not-in-force EP1633024B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0409479A FR2875063B1 (fr) 2004-09-07 2004-09-07 Douille equipee d'un anneau de centrage pour lampe a culot en verre

Publications (2)

Publication Number Publication Date
EP1633024A1 EP1633024A1 (de) 2006-03-08
EP1633024B1 true EP1633024B1 (de) 2010-03-17

Family

ID=34948331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05291829A Not-in-force EP1633024B1 (de) 2004-09-07 2005-09-02 Steckfassung für eine Keilbasislampe mit Zentrierring

Country Status (7)

Country Link
US (1) US20060052010A1 (de)
EP (1) EP1633024B1 (de)
JP (1) JP4746386B2 (de)
AT (1) ATE461542T1 (de)
DE (1) DE602005019957D1 (de)
ES (1) ES2340292T3 (de)
FR (1) FR2875063B1 (de)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
KR100791533B1 (ko) * 2006-04-14 2008-01-04 주식회사 신광하이테크 전구 소켓
WO2007119923A1 (en) * 2006-04-14 2007-10-25 Shin Kwang Hi Tech Co., Ltd. Socket for bulb
JP4851309B2 (ja) * 2006-12-06 2012-01-11 矢崎総業株式会社 照明装置
ITUD20090125A1 (it) 2009-06-26 2010-12-27 Automotive Lighting Rear Lamps Ital Ia S P A Portalampade per lampade in vetro e dispositivo di illuminazione e/o segnalazione comprendente tale portalampade
JP5550272B2 (ja) * 2009-07-15 2014-07-16 矢崎総業株式会社 照明ユニット
FR2959069B1 (fr) 2010-04-20 2012-04-27 Tbi Douille a double verrouillage pour ampoule electrique
KR101350371B1 (ko) * 2012-06-14 2014-01-13 정연택 차량용 풀컬러 광원장치
US9142928B2 (en) 2013-08-26 2015-09-22 Tyco Electronics Brasil Ltda. Bulb socket

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Also Published As

Publication number Publication date
ES2340292T3 (es) 2010-06-01
DE602005019957D1 (de) 2010-04-29
FR2875063B1 (fr) 2009-05-15
JP2006080075A (ja) 2006-03-23
FR2875063A1 (fr) 2006-03-10
JP4746386B2 (ja) 2011-08-10
ATE461542T1 (de) 2010-04-15
US20060052010A1 (en) 2006-03-09
EP1633024A1 (de) 2006-03-08

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