EP0415951B1 - Lampholder - Google Patents

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Publication number
EP0415951B1
EP0415951B1 EP89905037A EP89905037A EP0415951B1 EP 0415951 B1 EP0415951 B1 EP 0415951B1 EP 89905037 A EP89905037 A EP 89905037A EP 89905037 A EP89905037 A EP 89905037A EP 0415951 B1 EP0415951 B1 EP 0415951B1
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EP
European Patent Office
Prior art keywords
lamp holder
lamp
base
back plate
terminals
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EP89905037A
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German (de)
French (fr)
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EP0415951A1 (en
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Manfred Treichl
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Individual
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Individual
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/34Supporting elements displaceable along a guiding element
    • F21V21/35Supporting elements displaceable along a guiding element with direct electrical contact between the supporting element and electric conductors running along the guiding element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/0005Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14Adjustable mountings
    • F21V21/30Pivoted housings or frames

Definitions

  • the invention relates to a lamp holder for a low-voltage lamp rotatable about an axis, with an insulating base which has two lamp contacts and two connecting terminals conductively connected to the lamp contacts, each with a receiving bore for a rigid conductor.
  • a lighting device with a lamp socket of this type which can be pivoted like a universal joint is known, for example, from DE-U-8633208.
  • conventional screw terminals are arranged, into which the two conductor ends are inserted parallel to one another.
  • the two rigid conductors are angled several times so that the second ends lie in the axis of rotation and can be stored in bearing bushes of a further conductor section.
  • WO-A-88/02460 also shows a lamp socket which can be pivoted in the manner of a universal joint, two diametrically projecting rods projecting from the base and being fixed in the base.
  • a radial blind bore for receiving one of the two contact pins of the lamp to be used is formed in the end region of each current-conducting rod, which is accessible in the interior and is thus plugged directly into the current-conducting rods.
  • the outer ends of the current conducting rods are rotatably supported in quarter-circle-shaped supporting pieces, so that the first axis of rotation of the universal joint is defined by the rotary bearings of the curved supporting pieces.
  • the invention has now set itself the task of enabling the formation of an axis of rotation on the lamp holder.
  • the conductor ends engaging in the bearing bushes form a bearing axis about which the socket can be rotated, so that intermediate spacers and additional bearing bushings are saved compared to the prior art mentioned above. Since low-voltage lighting devices of this type also serve decorative purposes, this results in a further advantage that a second base can be provided on the two terminals, which with respect to the axis of rotation first base is arranged opposite. This makes it possible to create a double-turn version that can be rotated all around, with lamps that emit in opposite directions, which means that special lighting effects can be achieved.
  • connection terminals represent the support part for one or two bases, while usually the base also forms the support part for the connection terminals.
  • each base is formed by a cylindrical disk which has fastening bores diametrically to the disk axis, and that threaded pins are provided on each connection terminal perpendicular to the conductor receiving bore, each of which projects through a fastening bore of a base.
  • each threaded pin penetrates a flat contact spring which has a curved contact tongue which projects into the insertion opening of the contact pins.
  • the clamping spring thus creates both the electrical and the frictional connection between the lamp and the lamp holder, it being shown that so-called cold mirror lamps, i.e. those which have a glazed reflector screen and therefore have a relatively high weight, are clamped properly.
  • screw terminals are provided as connecting terminals, which is also possible without further ado in the lamp holder according to the invention.
  • at least one of the two setscrews can be formed by the clamping screw of the screw terminal. If a headless clamping screw is used, the base can be fixed using a nut that can be screwed onto the clamping screw.
  • Another embodiment on the other hand, can provide that the connecting terminals form screwless terminals, the contact spring having a clamping tongue which is inclined in the insertion direction and assigned to the conductor receiving bores.
  • FIG. 1 to 5 show axial sections through lamp holders according to the invention
  • FIG. 6 shows a top view of a lamp holder clamped to two lead wires
  • FIG. 7 shows a clamping element according to FIG. 6 in an oblique view.
  • a lamp holder 35 has a base 1 formed by a cylindrical disk made of insulating material, on which an outer sleeve 12 is locked by means of lugs 14 engaging behind the base edge.
  • the base 1 is fastened to two connecting terminals 2, each of which has a conductor receiving bore 3 for clamping rigid conductor ends 15 (FIG. 2).
  • the two conductor receiving bores 3 are aligned with one another, which results in an axis of rotation 10 which is perpendicular to the axis 6 of the Socket 1 runs.
  • the lamp holder can be rotated about the conductor ends 15 which can be inserted from the outside and penetrate an opening 13 in the sleeve 12.
  • the base 1 is also provided with insertion openings 11 for the contact pins 17 of a lamp 16, the diameter of the insertion openings 11 being enlarged.
  • a curved contact piece of a flat contact spring 9 projects through the insertion opening 11 and establishes the mechanical and electrical connection to the contact pins 17, with a good fit and a secure hold of the lamp 16 being achieved.
  • connection terminals 2 are designed as screw terminals.
  • Each connection terminal 2 consists of a cuboid base body having the conductor receiving bore 3, which carries a threaded pin 4 radially to the conductor receiving bore 3 on one side and has a threaded bore on the opposite side, into which a further threaded pin 7 with an actuating opening 8 at the end is inserted.
  • the base pin 7 forms the clamping screw for clamping the conductor end 15 and for fixing the desired position of the lamp holder.
  • the grub screw 7 can also run out on the conductor side into a tip which, when the grub screw 7 is tightened, is pressed into the conductor end 15, which otherwise could also be provided with a circumferential groove.
  • the threaded pin 7 can also be formed by a conventional cap screw.
  • the set screw 4 protruding from the connecting terminal 2 passes through a bore in the base 1, and is provided on the back with a nut 5, which is inserted in a recess in the base 1, in particular in a form-fitting manner.
  • the flat contact spring 9 penetrated by the grub screw 4 clamped, the free angled end of which forms the aforementioned contact piece projecting through the insertion opening 11 for contact with the contact pin 17 of the inserted lamp 16.
  • a cap screw could also be inserted into a second threaded hole in the base body of the connecting terminal 2.
  • the lamp holder can be rotated about the conductor ends 15 defining the axis of rotation 10 (arrow 25), the base bodies of the two connection bushings forming the connection terminals 2 being fixed in any desired position by the set screws 7.
  • FIG. 3 shows a second embodiment in which a second base 21 of the same design is attached to the base bodies of the connecting terminals 2 in mirror image of the base 1 with respect to the axis of rotation 10.
  • the setscrews 7 in turn form the clamping screws for the conductor ends 15 and for the further contact springs 23. These, with their angled ends forming contact tongues, project through insertion openings 22 for the contact pins 17 of a second lamp 16.
  • the remaining design corresponds to the lamp holder shown in FIG. 3 that described with reference to FIGS. 1 and 2.
  • FIG. 4 A further embodiment of a single version, which can also be doubled, is shown in FIG. 4.
  • the essential difference from the first embodiment according to FIGS. 1 and 2 lies in the arrangement of the contact spring 9, which is bent from a flat component into a U-shape and is threaded through at both ends of the threaded pin 4.
  • the bent contact piece projecting through the insertion opening 11 the contact spring 9 will deform approximately as asymmetrically as a result of the clamping at the end when a contact pin 17 is inserted in the insertion direction, as shown in dashed lines in FIG. 4.
  • Fig. 5 shows a slightly modified embodiment of a single version, which can also be supplemented by a second base to a double version.
  • the base body of the connection terminals 2 cries again into a cuboid shape and has a threaded bore 26 perpendicular to the conductor receiving bore on both sides.
  • the base 1 (and a possible second base 21) are provided on the outside with a larger recess 19 into which the contact spring 9 is inserted.
  • the grub screw 4 is formed by the head screw shown, the head 20 of which is countersunk in the recess 19.
  • the cap screw penetrates the contact spring 9 and the base 1 and is screwed into the base body of the connection terminal 2, but it is not used to fix the conductor ends 15.
  • Each terminal 2 is namely in this embodiment a screwless terminal, in which the fixing of the conductor end 15 is carried out by a clamping tongue 18 which is arranged obliquely to the inlet opening of the conductor receiving bore 3 and forms the second end portion of the contact spring 9, the first end portion of which in turn the tongue protruding through the insertion opening 11 of the base 1 forms.
  • the clamping tongue 18 runs in the usual way into a cutting edge which presses into the inserted conductor end or into a circumferential groove formed there. The clamping tongue 18 which bends out during insertion thus clamps the conductor end 15 and ensures the electrical contact.
  • a clamping screw can optionally be additionally screwed into the free threaded bore 26 in the embodiment shown as a single socket.
  • the additional anti-rotation lock is not required, since the symmetrical design provides an indifferent balance in every position, and the clamping effect on the conductor end 15, which is doubled by the second contact spring 9, is reinforced anyway.
  • threaded pin 4 could also be used as an additional clamping screw for the anti-rotation device on the conductor end 15, if appropriate also by a corresponding curvature of the clamping spring 9 in the contact region of the head 20 or by a snap ring or another spring element.
  • FIG. 6 shows an assembly example of a lamp holder 35 according to FIGS. 1 to 5 with the aid of the clamping element shown in FIG. 7.
  • Lead wires 31 and 32 are arranged at a distance from one another in a conventional manner, not explained in detail, for example horizontally braced.
  • the connecting wires 33, 34 the ends 15 of which are fixed in the connecting terminals 2, run approximately radially outward from the lamp socket 35 to be installed and then run in a half circular arc.
  • the free ends are held by means of insulating connecting parts 36 on the other conductor, so that the two connecting wires 33, 34 complement each other to form an approximately circular, closed arrangement.
  • connection of the two connecting wires 33, 34 to the lead wires 31, 32 takes place by means of clamping elements in the form of helical springs 37.
  • These comprise a plurality of windings 38 which merge into a first end section 40 which extends in the interior 42 of the helical spring 37, on the end of which a hook 41 is formed.
  • the second end 39 of the coil spring 37 terminates in the usual manner approximately in one plane.
  • the hook 41 lies in the relaxed position (FIG. 7) approximately in the middle of the helical spring 37, and emerges upon compression at the second end 39, so that it can be hooked into the connecting wire 33, 34 (FIG. 6). Due to the compression of the helical spring 37, the connecting wire 33, 34 is pressed against the last turn 38 at the second end 39, and is thus caught in the hook 41. The connecting wire 33, 34 can be moved in the hook 41 in the direction of the double arrow 28, whereby a rotation of the lamp holder 35 is achieved about its axis.
  • the windings 38 of the helical spring 37 pretensioned in this way are thus so closely spaced that a feed wire 31, 32 can be clamped anywhere between two windings 38, which comes into contact with the end section 40, and passes through the helical spring 37 essentially diametrically.
  • Each coil spring 37 can be moved along the lead wire 31, 32 in the direction of the double arrow 27.
  • the helical spring 37 can be pivoted about the axis 42 in the direction of the double arrow 29, the end section 40 on the lead wire 31, which is clamped between the turns 38, 32 rolls.
  • the lamp holder 35 can be aligned in any position in the room.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Connecting Device With Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

PCT No. PCT/AT89/00042 Sec. 371 Date Oct. 29, 1990 Sec. 102(e) Date Oct. 29, 1990 PCT Filed May 2, 1989 PCT Pub. No. WO89/11062 PCT Pub. Date Nov. 16, 1989.A lampholder for a low-voltage lamp comprises an insulating base (1) and two connecting terminals (2), and can be rotated about an axis of rotation (10) formed by two mutually aligned holes (3) for the passage of leads in the connecting terminals (2). Preferably, a second base (21) is arranged on the two connecting terminals (2) on the opposite side of the axis of rotation (10) to the first base (1).

Description

Die Erfindung betrifft eine Lampenfassung für eine um eine Achse drehbare Niederspannungslampe, mit einem isolierenden Sockel, der zwei Lampenkontakte und zwei mit den Lampenkontakten leitend verbundene Anschlußklemmen mit je einer Aufnahmebohrung für einen biegesteifen Leiter aufweist.The invention relates to a lamp holder for a low-voltage lamp rotatable about an axis, with an insulating base which has two lamp contacts and two connecting terminals conductively connected to the lamp contacts, each with a receiving bore for a rigid conductor.

Eine Beleuchtungseinrichtung mit einer kreuzgelenkartig verschwenkbaren Lampenfassung dieser Art ist beispielsweise aus dem DE-U-8633208 bekannt. An der Lampenfassung sind endseitig übliche Schraubklemmen angeordnet, in die die beiden Leiterenden parallel zueinander eingesteckt sind. Die beiden biegesteifen Leiter sind mehrfach so abgewinkelt, daß die zweiten Enden in der Drehachse liegen, und in Lagerbuchsen eines weiterführenden Leiterabschnittes gelagert werden können.A lighting device with a lamp socket of this type which can be pivoted like a universal joint is known, for example, from DE-U-8633208. At the end of the lamp, conventional screw terminals are arranged, into which the two conductor ends are inserted parallel to one another. The two rigid conductors are angled several times so that the second ends lie in the axis of rotation and can be stored in bearing bushes of a further conductor section.

Auch die WO-A-88/02460 zeigt eine kreuzgelenkartig verschwenkbare Lampenfassung, wobei aus dem Sockel diametral zwei Stromleitstäbe vorstehen, die im Sockel fixiert sind. In dem im Inneren zugänglichen Endbereich jedes Stromleitstabes ist eine radiale Sackbohrung zur Aufnahme eines der beiden Kontaktstifte der einzusetzenden Lampe ausgebildet, die somit direkt an die Stromleitstäbe angesteckt wird. Die äußeren Enden der Stromleitstäbe sind in viertelkreisförmig gebogenen Tragstücken drehbar gelagert, sodaß die erste Drehachse des Kreuzgelenkes durch die Drehlager der gebogenen Tragstücke definiert ist.WO-A-88/02460 also shows a lamp socket which can be pivoted in the manner of a universal joint, two diametrically projecting rods projecting from the base and being fixed in the base. A radial blind bore for receiving one of the two contact pins of the lamp to be used is formed in the end region of each current-conducting rod, which is accessible in the interior and is thus plugged directly into the current-conducting rods. The outer ends of the current conducting rods are rotatably supported in quarter-circle-shaped supporting pieces, so that the first axis of rotation of the universal joint is defined by the rotary bearings of the curved supporting pieces.

Die Erfindung hat es sich nun zur Aufgabe gestellt, die Ausbildung einer Drehachse an der Lampenfassung zu ermöglichen.The invention has now set itself the task of enabling the formation of an axis of rotation on the lamp holder.

Erfindungsgemäß wird dies dadurch gelöst, daß die beiden Anschlußklemmen des Sockels Lagerbuchsen der Lampenfassung bilden und miteinander fluchtende Leiteraufnahmebohrungen aufweisen.According to the invention this is achieved in that the two terminals of the base bearing bushes of the lamp holder form and have aligned conductor receiving holes.

Somit bilden die in die Lagerbuchsen eingreifenden Leiterenden eine Lagerachse, um die die Fassung verdrehbar ist, sodaß gegenüber dem oben angeführten Stand der Technik Leiterzwischenstücke und zusätzliche Lagerbuchsen eingespart werden. Da Niederspannungsbeleuchtungseinrichtungen dieser Art auch dekorativen Zwecken dienen, ergibt sich daraus als weiterer Vorteil, daß an den beiden Anschlußklemmen ein zweiter Sockel vorgesehen sein kann, der in bezug auf die Drehachse dem ersten Sockel gegenüberliegend angeordnet ist. Somit wird die Ausbildung einer rundum drehbaren Doppelfassung mit entgegengesetzt abstrahlenden Lampen möglich, wodurch sich besondere Beleuchtungseffekte erzielen lassen.Thus, the conductor ends engaging in the bearing bushes form a bearing axis about which the socket can be rotated, so that intermediate spacers and additional bearing bushings are saved compared to the prior art mentioned above. Since low-voltage lighting devices of this type also serve decorative purposes, this results in a further advantage that a second base can be provided on the two terminals, which with respect to the axis of rotation first base is arranged opposite. This makes it possible to create a double-turn version that can be rotated all around, with lamps that emit in opposite directions, which means that special lighting effects can be achieved.

Es ergibt sich weiters eine gewisse Umkehrung der Trägerfunktion, d.h. die Anschlußklemmen stellen den Trägerteil für einen oder zwei Sockel dar, während üblicherweise der Sockel auch den Trägerteil für die Anschlußklemmen bildet. In einer weiteren bevorzugten Ausführung ist vorgesehen, daß jeder Sockel durch eine zylindrische Scheibe gebildet ist, die diametral zur Scheibenachse Befestigungsbohrungen aufweist, und daß an jeder Anschlußklemme senkrecht zur Leiteraufnahmebohrung Gewindestifte vorgesehen sind, die jeweils eine Befestigungsbohrung eines Sockels durchragen. Hierdurch wird eine konstruktiv sehr einfache, leichte Ausführung erzielt, wobei vorzugsweise eine Hülse, die an einer Sockelscheibe verrastet werden kann, eine umhüllende Abdeckung für eine oder beide Fassungen bietet.There is also a certain reversal of the carrier function, i.e. the connection terminals represent the support part for one or two bases, while usually the base also forms the support part for the connection terminals. In a further preferred embodiment it is provided that each base is formed by a cylindrical disk which has fastening bores diametrically to the disk axis, and that threaded pins are provided on each connection terminal perpendicular to the conductor receiving bore, each of which projects through a fastening bore of a base. As a result, a structurally very simple, lightweight design is achieved, wherein preferably a sleeve, which can be locked on a base plate, offers an enveloping cover for one or both sockets.

Käufliche Niederspannungslampen besitzen meint Kontaktstifte, sodaß die Lampenfassungen Steckkontakte und demzufolge die Sockel Einstecköffnungen für die Kontaktstifte aufweisen. Eine bevorzugte Ausführung einer erfindungsgemäßen Lampenfassung mit Steckkontakten sieht nun vor, daß jeder Gewindestift eine flache Kontaktfeder durchdringt, die eine in die Einstecköffnung der Kontaktstifte ragende, gebogene Kontaktzunge aufweist. Die Klemmfeder stellt damit sowohl die elektrische als auch die reibungsschlüssige Verbindung zwischen der Lampe und der Lampenfassung her, wobei sich gezeigt hat, daß auch sogenannte Kaltspiegellampen, also solche die einen verglasten Reflektorschirm, und daher ein relativ hohes Gewicht aufweisen, einwandfrei geklemmt werden.Commercial low-voltage lamps have contact pins, so that the lamp sockets have plug contacts and consequently the bases have plug-in openings for the contact pins. A preferred embodiment of a lamp holder according to the invention with plug contacts now provides that each threaded pin penetrates a flat contact spring which has a curved contact tongue which projects into the insertion opening of the contact pins. The clamping spring thus creates both the electrical and the frictional connection between the lamp and the lamp holder, it being shown that so-called cold mirror lamps, i.e. those which have a glazed reflector screen and therefore have a relatively high weight, are clamped properly.

Beim eingangs angeführten Stand der Technik sind als Anschlußklemmen Schraubklemmen vorgesehen, was auch bei der erfindungsgemäßen Lampenfassung ohne weiters möglich ist. In diesem Fall kann zumindest einer der beiden Gewindestifte durch die Klemmschraube der Schraubklemme gebildet sein. Wird eine kopflose Klemmschraube verwendet, so kann der Sockel mittels einer auf die Klemmschraube aufschraubbaren Mutter fixiert sein. Eine andere Ausführung kann hingegen vorsehen, daß die Anschlußklemmen schraubenlose Klemmen bilden, wobei die Kontaktfeder eine in Einsteckrichtung geneigte, der Leiteraufnahmebohrungen zugeordnete Klemmzunge aufweist.In the prior art mentioned at the beginning, screw terminals are provided as connecting terminals, which is also possible without further ado in the lamp holder according to the invention. In this case, at least one of the two setscrews can be formed by the clamping screw of the screw terminal. If a headless clamping screw is used, the base can be fixed using a nut that can be screwed onto the clamping screw. Another embodiment, on the other hand, can provide that the connecting terminals form screwless terminals, the contact spring having a clamping tongue which is inclined in the insertion direction and assigned to the conductor receiving bores.

Nachstehend wird nun die Erfindung an Hand der Figuren der beiliegenden Zeichnungen in mehreren Ausführungsbeispielen näher beschrieben, ohne darauf beschränkt zu sein.The invention will now be described in more detail in several exemplary embodiments with reference to the figures of the accompanying drawings, without being limited thereto.

Die Fig. 1 bis 5 zeigen Axialschnitte durch erfindungsgemäße Lampenfassungen, die Fig. 6 eine Draufsicht auf eine an zwei Leitungsdrähten geklemmte Lampenfassung und Fig. 7 ein Klemmelement nach Fig. 6 in Schrägansicht.1 to 5 show axial sections through lamp holders according to the invention, FIG. 6 shows a top view of a lamp holder clamped to two lead wires and FIG. 7 shows a clamping element according to FIG. 6 in an oblique view.

Eine Lampenfassung 35 weist einen durch eine zylindrische Scheibe aus Isoliermaterial gebildeten Sockel 1 auf, an dem eine äußere Hülse 12 mittels den Sockelrand hintergreifender Nasen 14 verrastet ist. Der Sockel 1 ist an zwei Anschlußklemmen 2 befestigt, die zur Klemmung biegesteifer Leiterenden 15 (Fig. 2) je eine Leiteraufnahmebohrung 3 aufweisen. Die beiden Leiteraufnahmebohrungen 3 sind miteinander fluchtend angeordnet, wodurch sich eine Drehachse 10 ergibt, die senkrecht zur Achse 6 des Sockels 1 verläuft. Dadurch ist die Lampenfassung um die von außen einsteckbaren und eine öffnung 13 in der Hülse 12 durchdringenden Leiterenden 15 drehbar. Der Sockel 1 ist weiters mit Einstecköffnungen 11 für die Kontaktstifte 17 einer Lampe 16 versehen, wobei der Durchmesser der Einstecköffnungen 11 vergrößert ist. Ein gebogenes Kontaktstück einer flachen Kontaktfeder 9 durchragt die Einstecköffnung 11 und stellt die mechanische und elektrische Verbindung zu den Kontaktstiften 17 her, wobei ein guter Sitz und ein sicherer Halt der Lampe 16 erzielt wird.A lamp holder 35 has a base 1 formed by a cylindrical disk made of insulating material, on which an outer sleeve 12 is locked by means of lugs 14 engaging behind the base edge. The base 1 is fastened to two connecting terminals 2, each of which has a conductor receiving bore 3 for clamping rigid conductor ends 15 (FIG. 2). The two conductor receiving bores 3 are aligned with one another, which results in an axis of rotation 10 which is perpendicular to the axis 6 of the Socket 1 runs. As a result, the lamp holder can be rotated about the conductor ends 15 which can be inserted from the outside and penetrate an opening 13 in the sleeve 12. The base 1 is also provided with insertion openings 11 for the contact pins 17 of a lamp 16, the diameter of the insertion openings 11 being enlarged. A curved contact piece of a flat contact spring 9 projects through the insertion opening 11 and establishes the mechanical and electrical connection to the contact pins 17, with a good fit and a secure hold of the lamp 16 being achieved.

In den in den Fig. 1 bis 4 gezeigten Ausführungen sind die Anschlußklemmen 2 als Schraubklemmen ausgebildet. Jede Anschlußklemme 2 besteht aus einem die Leiteraufnahmebohrung 3 aufweisenden quaderförmigen Grundkörper, der radial zur Leiteraufnahmebohrung 3 an einer Seite einen Gewindestift 4 trägt und an der gegenüberliegenden Seite eine Gewindebohrung aufweist, in die ein weiterer Gewindestift 7 mit endseitiger Betätigungsöffnung 8 eingesetzt ist. Der Grundstift 7 bildet dabei die Klemmschraube zur Klemmung des Leiterendes 15 und zur Fixierung der gewünschten Position der Lampenfassung. Der Gewindestift 7 kann dabei leiterseitig auch in eine Spitze auslaufen, die sich beim Anziehen des Gewindestiftes 7 in das Leiterende 15 eindrückt, das im übrigen auch mit einer Umfangsrille versehen sein könnte. Selbstverständlich kann der Gewindestift 7 auch durch eine übliche Kopfschraube gebildet sein.In the embodiments shown in FIGS. 1 to 4, the connection terminals 2 are designed as screw terminals. Each connection terminal 2 consists of a cuboid base body having the conductor receiving bore 3, which carries a threaded pin 4 radially to the conductor receiving bore 3 on one side and has a threaded bore on the opposite side, into which a further threaded pin 7 with an actuating opening 8 at the end is inserted. The base pin 7 forms the clamping screw for clamping the conductor end 15 and for fixing the desired position of the lamp holder. The grub screw 7 can also run out on the conductor side into a tip which, when the grub screw 7 is tightened, is pressed into the conductor end 15, which otherwise could also be provided with a circumferential groove. Of course, the threaded pin 7 can also be formed by a conventional cap screw.

Der von der Anschlußklemme 2 abstehende Gewindestift 4 durchsetzt eine Bohrung des Sockels 1, und ist rückseitig mit einer Mutter 5 versehen, die in eine Vertiefung des Sockels 1 insbesondere formschlüssig eingesetzt ist. Zwischen der Anschlußklemme 2 und dem Sockel 1 ist die flache, vom Gewindestift 4 durchsetzte Kontaktfeder 9 geklemmt, deren freies abgewinkeltes Ende das erwähnte durch die Einstecköffnung 11 ragende Kontaktstück zur Anlage an den Kontaktstift 17 der eingesteckten Lampe 16 bildet. Anstelle des mit einer Mutter 5 versehenen Gewindestiftes 4 könnte auch eine Kopfschraube in eine zweite Gewindebohrung des Grundkörpers der Anschlußklemme 2 eingesetzt werden. Wie aus Fig. 2 ersichtlich, kann die Lampenfassung um die die Drehachse 10 definierenden Leiterenden 15 verdreht werden (Pfeil 25), wobei die Grundkörper der bei den Anschlußklemmen 2 zwei Lagerbuchsen bilden, und in jeder gewünschten Stellung durch die Gewindestifte 7 fixiert werden.The set screw 4 protruding from the connecting terminal 2 passes through a bore in the base 1, and is provided on the back with a nut 5, which is inserted in a recess in the base 1, in particular in a form-fitting manner. Between the terminal 2 and the base 1 is the flat contact spring 9 penetrated by the grub screw 4 clamped, the free angled end of which forms the aforementioned contact piece projecting through the insertion opening 11 for contact with the contact pin 17 of the inserted lamp 16. Instead of the threaded pin 4 provided with a nut 5, a cap screw could also be inserted into a second threaded hole in the base body of the connecting terminal 2. As can be seen from FIG. 2, the lamp holder can be rotated about the conductor ends 15 defining the axis of rotation 10 (arrow 25), the base bodies of the two connection bushings forming the connection terminals 2 being fixed in any desired position by the set screws 7.

In Fig. 3 ist eine zweite Ausführung gezeigt, in der in bezug auf die Drehachse 10 spiegelbildlich zum Sockel 1 ein zweiter Sockel 21 gleicher Ausbildung an den Grundkörpern der Anschlußklemmen 2 befestigt ist. Die beiden in dieser Ausführung etwas längeren Gewindestifte 7 durchdringen je eine weitere Kontaktfeder 23 und den zweiten Sockel 21, an dessen Außenseite Muttern 24 in Vertiefungen angeordnet sind. Dabei bilden die Gewindestifte 7 wiederum die Klemmschrauben für die Leiterenden 15 und für die weiteren Kontaktfedern 23. Diese durchragen mit ihren Kontaktzungen bildenden, abgewinkelten Enden Einstecköffnungen 22 für die Kontaktstifte 17 einer zweiten Lampe 16. Die restliche Ausbildung der in Fig. 3 gezeigten Lampenfassung entspricht der zu den Fig. 1 und 2 beschriebenen.FIG. 3 shows a second embodiment in which a second base 21 of the same design is attached to the base bodies of the connecting terminals 2 in mirror image of the base 1 with respect to the axis of rotation 10. The two threaded pins 7, which are somewhat longer in this embodiment, each penetrate a further contact spring 23 and the second base 21, on the outside of which nuts 24 are arranged in depressions. The setscrews 7 in turn form the clamping screws for the conductor ends 15 and for the further contact springs 23. These, with their angled ends forming contact tongues, project through insertion openings 22 for the contact pins 17 of a second lamp 16. The remaining design corresponds to the lamp holder shown in FIG. 3 that described with reference to FIGS. 1 and 2.

Eine weitere Ausführung einer Einfachfassung, die auch verdoppelt werden kann, zeigt Fig. 4. Der wesentliche Unterschied zur ersten Ausführung nach Fig. 1 und 2 liegt in der Anordnung der Kontaktfeder 9, die aus einem flachen Bauteil zu einer U-Form gebogen ist und an beiden Enden vom Gewindestift 4 durchsetzt wird. Das die Einstecköffnung 11 durchragende gebogene Kontaktstück der Kontaktfeder 9 wird sich durch die endseitige Einspannung beim Einstecken eines Kontaktstiftes 17 in Einsteckrichtung annähernd so asymmetrisch verformen, wie in Fig. 4 rechts strichliert dargestellt ist. Dies führt einerseits zu einem höheren Anpreßdruck an den eingesetzten Kontaktstift 17 und andererseits zu einem erhöhten Anfangswiderstand gegen das Herausziehen des Kontaktstiftes 17, da das Kontaktstück vorerst in die in Ausziehrichtung spiegelbildlich asymmetrische Form überführt werden muß (Fig. 4 links), währenddessen sie einer stärkeren Kompression unterworfen wird. Die übrige Ausbildung der Lampenfassung entspricht ebenfalls der bereits zu Fig. 1 beschriebenen.A further embodiment of a single version, which can also be doubled, is shown in FIG. 4. The essential difference from the first embodiment according to FIGS. 1 and 2 lies in the arrangement of the contact spring 9, which is bent from a flat component into a U-shape and is threaded through at both ends of the threaded pin 4. The bent contact piece projecting through the insertion opening 11 the contact spring 9 will deform approximately as asymmetrically as a result of the clamping at the end when a contact pin 17 is inserted in the insertion direction, as shown in dashed lines in FIG. 4. This leads on the one hand to a higher contact pressure on the inserted contact pin 17 and on the other hand to an increased initial resistance to the pulling out of the contact pin 17, since the contact piece must first be transferred into the mirror-image asymmetrical shape in the pulling direction (Fig. 4 left), during which it is stronger Compression is subjected. The remaining design of the lamp holder also corresponds to that already described for FIG. 1.

Fig. 5 zeigt eine etwas abgeänderte Ausführungsform einer Einfachfassung, die ebenso durch einen zweiten Sockel zu einer Doppelfassung ergänzt werden kann. Der Grundkörper der Anschlußklemmen 2 weint wieder eine Quaderform auf und besitzt beidseitig eine zur Leiteraufnahmebohrung senkrechte Gewindebohrung 26. Der Sockel 1 (und ein eventueller zweiter Sockel 21) sind an der Außenseite mit einer größeren Ausnehmung 19 versehen, in die die Kontaktfeder 9 eingelegt ist. Der Gewindestift 4 wird durch die dargestellte Kopfschraube gebildet, deren Kopf 20 in der Ausnehmung 19 versenkt ist. Die Kopfschraube durchdringt die Kontaktfeder 9 und den Sockel 1 und ist in dem Grundkörper der Anschlußklemme 2 eingeschraubt, wobei sie jedoch nicht zur Fixierung der Leiterenden 15 dient. Jede Anschlußklemme 2 stellt nämlich in dieser Ausführung eine schraubenlose Klemme dar, in der die Fixierung des Leiterendes 15 durch eine Klemmzunge 18 erfolgt, die zur Eintrittsöffnung der Leiteraufnahmebohrung 3 schräg verlaufend angeordnet ist und den zweiten Endabschnitt der Kontaktfeder 9 bildet, dessen erster Endabschnitt wiederum die die Einstecköffnung 11 des Sockels 1 durchragende Kontaktzunge bildet. Die Klemmzunge 18 läuft in üblicher Weise in eine Schneide aus, die sich in das eingesteckte Leiterende oder eine dort ausgebildete Umfangsrille eindrückt. Die beim Einschieben sich ausbiegende Klemmzunge 18 klemmt damit das Leiterende 15 fest und stellt den elektrischen Kontakt sicher. Zur verdrehfesten Fixierung kann in der gezeigten Ausführung als Einfachfassung in die freie Gewindebohrung 26 gegebenenfalls eine Klemmschraube zusätzlich eingeschraubt werden. In einer Fig. 3 entsprechenden Ausführung als Doppelfassung ist die zusätzliche Verdrehsicherung nicht erforderlich, da durch die symmetrische Ausbildung in jeder Position ein indifferentes Gleichgewicht gegeben ist, und die durch die zweite Kontaktfeder 9 verdoppelte Klemmwirkung auf das Leiterende 15 ohnedies verstärkt ist.Fig. 5 shows a slightly modified embodiment of a single version, which can also be supplemented by a second base to a double version. The base body of the connection terminals 2 cries again into a cuboid shape and has a threaded bore 26 perpendicular to the conductor receiving bore on both sides. The base 1 (and a possible second base 21) are provided on the outside with a larger recess 19 into which the contact spring 9 is inserted. The grub screw 4 is formed by the head screw shown, the head 20 of which is countersunk in the recess 19. The cap screw penetrates the contact spring 9 and the base 1 and is screwed into the base body of the connection terminal 2, but it is not used to fix the conductor ends 15. Each terminal 2 is namely in this embodiment a screwless terminal, in which the fixing of the conductor end 15 is carried out by a clamping tongue 18 which is arranged obliquely to the inlet opening of the conductor receiving bore 3 and forms the second end portion of the contact spring 9, the first end portion of which in turn the tongue protruding through the insertion opening 11 of the base 1 forms. The clamping tongue 18 runs in the usual way into a cutting edge which presses into the inserted conductor end or into a circumferential groove formed there. The clamping tongue 18 which bends out during insertion thus clamps the conductor end 15 and ensures the electrical contact. For twist-proof fixing, a clamping screw can optionally be additionally screwed into the free threaded bore 26 in the embodiment shown as a single socket. In an embodiment corresponding to FIG. 3 as a double version, the additional anti-rotation lock is not required, since the symmetrical design provides an indifferent balance in every position, and the clamping effect on the conductor end 15, which is doubled by the second contact spring 9, is reinforced anyway.

Des weiteren könnte, gegebenenfalls auch durch eine entsprechende Wölbung der Klemmfeder 9 im Anlagebereich des Kopfes 20 bzw. durch einen Sprengring oder ein anderes Federelement, auch der Gewindestift 4 als zusätzliche Klemmschraube für die Verdrehsicherung auf dem Leiterende 15 herangezogen werden.Furthermore, the threaded pin 4 could also be used as an additional clamping screw for the anti-rotation device on the conductor end 15, if appropriate also by a corresponding curvature of the clamping spring 9 in the contact region of the head 20 or by a snap ring or another spring element.

Fig.6 zeigt ein Montagebeispiel einer Lampenfassung 35 gemäß Fig. 1 bis 5 mit Hilfe des in Fig. 7 dargestellten Klemmelementes.6 shows an assembly example of a lamp holder 35 according to FIGS. 1 to 5 with the aid of the clamping element shown in FIG. 7.

Zuleitungsdrähte 31 und 32 sind mit Abstand zueinander in herkömmlicher, nicht näher erläuterter Weise angeordnet, beispielsweise horizontal verspannt. Aus der zu installierenden Lampenfassung 35 führen die Anschlußdrähte 33,34, deren Enden 15 in den Anschlußklemmen 2 fixiert sind, etwa radial nach außen und verlaufen anschließend in einem halben Kreisbogen. Die freien Enden sind mittels isolierender Verbindungsteile 36 am jeweils anderen Leiter gehalten, sodaß die beiden Anschlußdrähte 33, 34 sich zu einer etwa kreisförmigen, geschlossenen Anordnung ergänzen.Lead wires 31 and 32 are arranged at a distance from one another in a conventional manner, not explained in detail, for example horizontally braced. The connecting wires 33, 34, the ends 15 of which are fixed in the connecting terminals 2, run approximately radially outward from the lamp socket 35 to be installed and then run in a half circular arc. The free ends are held by means of insulating connecting parts 36 on the other conductor, so that the two connecting wires 33, 34 complement each other to form an approximately circular, closed arrangement.

Die Verbindung der beiden Anschlußdrähte 33, 34 zu den Zuleitungsdrähten 31,32 erfolgt mittels Klemmelementen in Form von Schraubenfedern 37. Diese umfassen mehrere Windungen 38, die in einen ersten, sich in der Achse 42 der Schraubenfeder 37 in deren Inneres erstreckenden Endabschnitt 40 übergehen, an dem endseitig ein Haken 41 geformt ist. Das zweite Ende 39 der Schraubenfeder 37 läuft in üblicher Weise etwa in einer Ebene aus.The connection of the two connecting wires 33, 34 to the lead wires 31, 32 takes place by means of clamping elements in the form of helical springs 37. These comprise a plurality of windings 38 which merge into a first end section 40 which extends in the interior 42 of the helical spring 37, on the end of which a hook 41 is formed. The second end 39 of the coil spring 37 terminates in the usual manner approximately in one plane.

Der Haken 41 liegt in entspannter Stellung (Fig. 7) etwa in der Mitte der Schraubenfeder 37, und tritt bei Kompression am zweiten Ende 39 aus, sodaß er in den Anschlußdraht 33,34 eingehängt werden kann (Fig. 6). Durch die Kompression der Schraubenfeder 37 wird der Anschlußdraht 33,34 gegen die letzte Windung 38 am zweiten Ende 39 gedrückt, und ist so im Haken 41 gefangen. Dabei kann der Anschlußdraht 33, 34 im Haken 41 im Sinne des Doppelpfeiles 28 verschoben werden, wodurch eine Drehung der Lampenfassung 35 um ihre Achse erreicht wird. Die Windungen 38 der derart vorgespannten Schraubenfeder 37 sind damit so nahe beabstandet, daß ein Zuleitungsdraht 31,32 an beliebiger Stelle zwischen zwei Windungen 38 eingeklemmt werden kann, der am Endabschnitt 40 zur Anlage kommt, und die Schraubenfeder 37 im wesentlichen diametral durchsetzt. Jede Schraubenfeder 37 kann dabei längs des Zuleitungsdrahtes 31,32 im Sinne des Doppelpfeiles 27 verschoben werden. Weiters kann die Schraubenfeder 37 im Sinne des Doppelpfeiles 29 um die Achse 42 geschwenkt werden, wobei der Endabschnitt 40 an dem zwischen den Windungen 38 geklemmten Zuleitungsdraht 31, 32 abrollt. Somit ist die Lampenfassung 35 in jede beliebige Stellung im Raum ausrichtbar.The hook 41 lies in the relaxed position (FIG. 7) approximately in the middle of the helical spring 37, and emerges upon compression at the second end 39, so that it can be hooked into the connecting wire 33, 34 (FIG. 6). Due to the compression of the helical spring 37, the connecting wire 33, 34 is pressed against the last turn 38 at the second end 39, and is thus caught in the hook 41. The connecting wire 33, 34 can be moved in the hook 41 in the direction of the double arrow 28, whereby a rotation of the lamp holder 35 is achieved about its axis. The windings 38 of the helical spring 37 pretensioned in this way are thus so closely spaced that a feed wire 31, 32 can be clamped anywhere between two windings 38, which comes into contact with the end section 40, and passes through the helical spring 37 essentially diametrically. Each coil spring 37 can be moved along the lead wire 31, 32 in the direction of the double arrow 27. Furthermore, the helical spring 37 can be pivoted about the axis 42 in the direction of the double arrow 29, the end section 40 on the lead wire 31, which is clamped between the turns 38, 32 rolls. Thus, the lamp holder 35 can be aligned in any position in the room.

Claims (6)

  1. Lamp holder for a low voltage lamp which is rotatable about an axis, with an insulating backplate (10), which is provided with two lamp contacts and two supply terminals (2) conductively connected to the lamp contacts, each with a receiving bore (3) for a flexurally stiff conductor (15), characterised in that the two supply terminals of the back plate (1) form bearing bushes of the lamp holder and are provided with conductor receiving bores which are aligned with one another.
  2. Lamp holder according to claim 1, characterised in that on the two supply terminals (2) a second back plate (21) is provided which is arranged opposite the first back plate (1) with respect to the rotational axis (10).
  3. Lamp holder according to claim 1 or 2, characterised in that each back plate (1, 21) is formed by a cylindrical plate, which is provided with fixing bores diametrically to the axis of the plate (6), and that on each supply terminal (2) threaded pins (4, 7) are provided, perpendicular to the conductor receiving bores (3), and each of which extends through a fixing bore of a back plate (1, 21).
  4. Lamp holder according to claim 3, in which plug-in contacts for connector pins (17) of the lamp are provided in the back plate, characterised in that each threaded pin (4, 7) penetrates a flat contact spring (9, 23), which is provided with a curved tongue which extends into the plug-in aperture (11, 22) of the connector pin.
  5. Lamp holder according to one of claims 1 to 4, whereby screw terminals are provided as supply terminals (2), characterised in that at least one of the two threaded pins (4, 7) forms the terminal screw of the screw terminal.
  6. Lamp holder according to one of claims 1 to 4, characterised in that the supply terminals (2) form screwless terminals, whereby the contact spring (9) is provided with a contact tongue (18) for the conductor receiving bore (3) and inclined towards the direction of insertion.
EP89905037A 1988-05-03 1989-05-02 Lampholder Expired - Lifetime EP0415951B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1139/88 1988-05-03
AT1139/88A AT393185B (en) 1988-05-03 1988-05-03 LAMP SOCKET

Publications (2)

Publication Number Publication Date
EP0415951A1 EP0415951A1 (en) 1991-03-13
EP0415951B1 true EP0415951B1 (en) 1994-01-19

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EP89905037A Expired - Lifetime EP0415951B1 (en) 1988-05-03 1989-05-02 Lampholder

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US (1) US5077647A (en)
EP (1) EP0415951B1 (en)
JP (1) JPH03504179A (en)
AT (2) AT393185B (en)
AU (1) AU3547289A (en)
DE (1) DE58906782D1 (en)
WO (1) WO1989011062A1 (en)
ZA (1) ZA893273B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9307373U1 (en) * 1993-05-14 1994-09-22 Sonnleitner, Ferdinand, 40625 Düsseldorf Low voltage lighting system
ITFI20070023A1 (en) 2007-02-02 2008-08-03 Targetti Sankey Spa ADJUSTABLE LIGHTING DEVICE.
AU2012393568A1 (en) 2012-11-01 2015-04-30 Halliburton Energy Services, Inc. Differential phase semblance apparatus, systems, and methods

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH65428A (en) * 1913-09-06 1914-06-16 Albert Schalch Contact device on elevators with lateral clearance intended for pulling up lamps
FR550640A (en) * 1922-04-26 1923-03-14 Electric lamp holder for illumination
US1813863A (en) * 1930-05-27 1931-07-07 Edgar Little Nightingale Hanger for suspension lighting fixtures
FR949827A (en) * 1947-07-17 1949-09-09 Maison Breguet Lamp holder
US2655637A (en) * 1951-12-28 1953-10-13 Gen Electric Angle socket for electric lamps
GB1596745A (en) * 1976-11-05 1981-08-26 Park Royal Porcelain Co Ltd Lamp holders
CA1160303A (en) * 1981-01-09 1984-01-10 William R. Bailey Electrical connector with contact retention tabs
IT1178031B (en) * 1984-10-05 1987-09-03 Fabio Angeli IMPROVEMENT IN ELECTRIC AND MAGNETIC SAFETY ATTACHMENTS FOR ELECTRIC LAMPS
US4837667A (en) * 1986-10-03 1989-06-06 Tobias Grau Lighting system with lamps arranged between two low-voltage conductors
JPH01501582A (en) * 1986-10-03 1989-06-01 グラウ、トビーアス A lighting installation with an electric light placed between two low-voltage conductors
DE8633208U1 (en) * 1986-12-11 1987-02-19 Bovert, Friedhelm vom, 5900 Siegen Lighting device
DE8704668U1 (en) * 1987-04-01 1987-05-27 Sölken-Leuchten GmbH & Co KG, 5760 Arnsberg Halogen low-voltage lamp

Also Published As

Publication number Publication date
DE58906782D1 (en) 1994-03-03
ZA893273B (en) 1990-01-31
US5077647A (en) 1991-12-31
AU3547289A (en) 1989-11-29
WO1989011062A1 (en) 1989-11-16
ATE100553T1 (en) 1994-02-15
ATA113988A (en) 1991-01-15
EP0415951A1 (en) 1991-03-13
JPH03504179A (en) 1991-09-12
AT393185B (en) 1991-08-26

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