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EP0923105B1 - Compact low pressure discharge lamp - Google Patents

Compact low pressure discharge lamp Download PDF

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Publication number
EP0923105B1
EP0923105B1 EP98121414A EP98121414A EP0923105B1 EP 0923105 B1 EP0923105 B1 EP 0923105B1 EP 98121414 A EP98121414 A EP 98121414A EP 98121414 A EP98121414 A EP 98121414A EP 0923105 B1 EP0923105 B1 EP 0923105B1
Authority
EP
European Patent Office
Prior art keywords
pressure discharge
low
discharge lamp
cap
mounting plate
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 - Lifetime
Application number
EP98121414A
Other languages
German (de)
French (fr)
Other versions
EP0923105A1 (en
Inventor
Horst Wittmann
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 EP0923105A1 publication Critical patent/EP0923105A1/en
Application granted granted Critical
Publication of EP0923105B1 publication Critical patent/EP0923105B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base

Definitions

  • the invention relates to a compact low-pressure discharge lamp consisting of a discharge vessel with electrodes and power supplies and a base composed of a cap, housing and mounting plate with ballast arrangement, the mounting plate with the ballast arrangement being fitted inside the base housing and having connections for the electrical connection of the power leads to the mounting plate and the power supply means. a spring element can be pressed against the electrical connections of the mounting plate.
  • the discharge vessel usually consists of a tube bent one or more times, which is arranged in a base.
  • a mounting plate designed as a circuit board with an electronic ballast assembly soldered to it is integrated in the base.
  • the manufacturing costs for these compact low-pressure discharge lamps are relatively high, since many complicated manufacturing steps are necessary in the manufacture.
  • One of these manufacturing steps is the electrical connection of the power supply lines of the discharge vessel to the corresponding connections of the ballast arrangements. To make this connection, the corresponding connecting wires have so far been brought together and crimped, for example, with a metal sleeve.
  • the known low-pressure discharge lamp has a discharge vessel with electrodes and current leads and a cap, Housing and mounting plate with ballast assembly assembled base.
  • the mounting plate is attached with the ballast arrangement inside the base housing. It also has connections for the electrical connection of the power supply lines to the mounting plate, the power supply lines being pressed against the electrical connections of the mounting plate designed as separate contact pins by means of a spring element arranged in the housing on the mounting plate.
  • EP-A-0 452 743 discloses a low-pressure discharge lamp which has holding pins with the aid of which the ends of the current leads are aligned perpendicular to the bow-shaped connecting wires of the ballast arrangement.
  • the respective wires to be contacted are arranged approximately at right angles one behind the other and are pressed resiliently against one another with the aid of the retaining pin and the inner wall of the base housing, so that an electrical connection is established between the electrodes of the discharge vessel of the ballast arrangement.
  • a disadvantage of the prior art described is that such electrical connection systems are very complex. This increases the manufacturing costs.
  • the production speed for such low-pressure discharge lamps is not very high.
  • the current leads of a discharge vessel are connected to the electrical connections of a mounting plate with a ballast arrangement via a respective spring element which presses the current supply against the connection.
  • the spring element is arranged in a cap of the low-pressure discharge lamp, the cap having at least one spring receptacle for receiving and releasably fastening the spring element.
  • the spring element Before the base is assembled, the spring element is advantageously accommodated in a spring receptacle formed on the inner circumference of the cap.
  • the spring receptacle has a cavity for receiving at least a part of the spring element and is usually rectangular in cross section.
  • a shoulder for supporting a region of the spring element is formed in the cavity of the spring receptacle.
  • a gap is formed between the inner circumference of the housing and the outer circumference of the cap for receiving one end of the power supply.
  • the mounting plate is fastened in the interior of the housing perpendicular to the longitudinal axis of the lamp.
  • the mounting plate lies on ribs formed on the inner circumference of the housing and running parallel to the longitudinal axis of the lamp.
  • the mounting plate is advantageously designed as a circuit board, with conductor tracks being formed on the side facing the discharge vessel and circuit elements of the ballast arrangement being formed on the side facing away from the discharge vessel.
  • At least one connection for making electrical contact with the power supply to the mounting plate is designed as a soldering eye.
  • at least one connection for electrically contacting the power supply with the mounting plate consists of one or more flat soldering areas and / or strips. This simple and space-saving structure of the lamp base ensures that it can be kept small overall and is also inexpensive to manufacture.
  • Positioning devices are advantageously designed to position the cap and the housing of the base in the correct position. Further details, features, configurations and advantages result from the following description of a number of exemplary embodiments of the subject matter of the invention which are shown in the drawing:
  • FIG. 1 shows a schematically illustrated sectional view of a compact low-pressure discharge lamp 10 or a partial area of the edge area of the base 12.
  • the lamp 10 comprises a discharge vessel 14 and a base 12, the base 12 being composed of a cap 16 and a housing 18.
  • the base 12 is essentially cylindrical.
  • the cap 16 and the housing 18 are detachably connected to one another, at least one positioning device 48 being designed for connecting the cap 16 and the housing 18 in the correct position.
  • the cap 16 has in the end facing the housing 18 an annular bead 20 in its outer periphery.
  • the bead 20 and an annular groove 22 in the inner circumference of the housing 18 form a gap 34 for receiving an end 32 of a power supply 30.
  • a mounting plate 24 is fastened perpendicular to the lamp axis.
  • the mounting plate 24 is designed as a circuit board, with conductor tracks (not shown) being formed on the side facing the discharge vessel 14 and circuit elements on the side facing away from the discharge vessel 14.
  • the discharge vessel 14 usually consists of two or three U-shaped pipe sections which are connected to one another by a passage (not shown), the end legs each carrying electrodes.
  • the free ends of the pipe sections are sealed gas-tight by squeezing and are located within the cap 16 of the base 12.
  • the power supply lines 30 emerge from the discharge vessel 14.
  • Such a lamp is described on page 1.
  • the power supply lines 30 are pressed against the electrical connections 26 of the mounting plate 24 by means of a spring element 28.
  • the spring element 28 here engages in a spring receptacle 40 formed in the region of the inner circumference of the cap 16 and is detachably fastened therein in the exemplary embodiment shown.
  • the spring receptacle 40 consists of side walls 41, 43 which surround a cavity 42.
  • the cavity 42 serves to receive part of the spring element 28 and is rectangular in cross section (FIG. 2).
  • a shoulder 44 for supporting an area 50 of the spring element 28 is formed in the cavity 42.
  • the side walls 41, 43 surrounding the cavity 42 have bevels 46 towards the free end of the spring receptacle 40. These bevels 46 facilitate the introduction of the spring element 28.
  • the end 32 of the power supply 30 is placed in the gap 34 and thus aligned in the correct position.
  • the mounting plate 24 has, on the side facing the discharge vessel 14, connections 26 for making electrical contact with the power supply lines 30 of the ballast arrangement.
  • the connections 26 can be designed as a soldering eye or as a flat soldering surface and / or strip integrated or resting in the mounting plate 24.
  • Figure 2 shows a sectional view of a portion of the edge region of the base 12. It can be seen that the free end of the housing 18 is connected to the free end of the cap 16.
  • the spring receptacle 40 is formed in the region of the inner circumference of the cap 16.
  • the side walls 41, 43 surround the cavity 42 in which the shoulder 44 is formed on the side facing the outer circumference of the cap 16.
  • the spring receptacle 40 is essentially rectangular in cross section.
  • the bevel 46 of the side walls 41, 43 can be seen.
  • the different overall lengths of the two side walls 41, 43 can also be clearly seen.
  • a circumferential tab 36 forms the end of the cap 16 in the direction of the mounting plate 24.
  • the tab 36 forms dome-like extensions 37 at predetermined locations, which engage in corresponding recesses 38 in the mounting plate 24.
  • the spike-like extensions 37 of the tab 36 and the recesses 38 thus form the positioning device 48.
  • FIG. 3 shows a plan view of a part of the edge region of the base 12 of the lamp 10. It can be seen that the ends 32 of the power supply lines 30 come to lie in the gap 34 formed between the peripheral tab 36 and the inner circumference of the housing 18. For correct positioning of the power supply lines 30 below the spring element 28 are on the outer circumference of the cap 16 in the area of the spring receptacles 40 each have recesses 52 for receiving the ends 32 of the power supply lines 30.
  • Figure 4 shows a schematic representation of the design of the spring element 28.
  • the spring element 28 is shown as a multi-curved spring steel band.
  • the length of the spring element 28 is selected such that a reliable contact between the power supply 30 and the terminal 26 of the mounting plate 24 is guaranteed.
  • the spring element 28 consists of plastic and / or metal and / or a metal alloy.
  • the spring element can be designed as a spiral spring. Any other advantageous spring shape is also conceivable.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine kompakte Niederdruckentladungslampe bestehend aus einem Entladungsgefäß mit Elektroden und Stromzuführungen und einem aus Kappe, Gehäuse und Montageplatte mit Vorschaltanordnung zusammengesetzten Sockel, wobei die Montageplatte mit der Vorschaltanordnung im Inneren des Sockelgehäuses angebracht ist und Anschlüsse zur elektrischen Verbindung der Stromzuführungen mit der Montageplatte aufweist und die Stromzuführungen mittels. einem Federelement gegen die elektrischen Anschlüsse der Montageplatte gedrückt werden.The invention relates to a compact low-pressure discharge lamp consisting of a discharge vessel with electrodes and power supplies and a base composed of a cap, housing and mounting plate with ballast arrangement, the mounting plate with the ballast arrangement being fitted inside the base housing and having connections for the electrical connection of the power leads to the mounting plate and the power supply means. a spring element can be pressed against the electrical connections of the mounting plate.

Bekannte Niederdruckentladungslampen ersetzen in zunehmendem Maß die Glühlampe im Haus- und Wohnbereich. Bei den bekannten Niederdruckentladungslampen besteht das Entladungsgefäß meist aus einem ein- oder mehrfach gebogenen Rohr, welches in einem Sockel angeordnet ist. Im Sockel ist dabei eine als Schaltungsplatine ausgebildete Montageplatte mit einer darauf verlöteten elektronischen Vorschaltanordnung integriert. Die Herstellungskosten für diese kompakten Niederdruckentladungslampen sind relativ hoch, da viele komplizierte Fertigungsschritte bei der Herstellung notwendig sind. Eine dieser Fertigungsschritte ist die elektrische Verbindung der Stromzuführungen des Entladungsgefäßes mit den entsprechenden Anschlüssen der Vorschaltanordnungen. Zur Herstellung dieser Verbindung werden bisher die entsprechenden Verbindungsdrähte zusammengeführt und zum Beispiel mit einer Metallhülse vercrimpt.Known low-pressure discharge lamps are increasingly replacing the incandescent lamp in the home and living area. In the known low-pressure discharge lamps, the discharge vessel usually consists of a tube bent one or more times, which is arranged in a base. A mounting plate designed as a circuit board with an electronic ballast assembly soldered to it is integrated in the base. The manufacturing costs for these compact low-pressure discharge lamps are relatively high, since many complicated manufacturing steps are necessary in the manufacture. One of these manufacturing steps is the electrical connection of the power supply lines of the discharge vessel to the corresponding connections of the ballast arrangements. To make this connection, the corresponding connecting wires have so far been brought together and crimped, for example, with a metal sleeve.

Eine Weiterentwicklung dieser einfachen Verbindung ist in der EP-A-0 179 251 beschrieben. Dabei weist die bekannte Niederdruckentladungslampe ein Entladungsgefäß mit Elektroden und Stromzuführungen und einen aus Kappe, Gehäuse und Montageplatte mit Vorschaltanordnung zusammen-gesetzten Sockel auf. Die Montageplatte ist mit der Vorschaltanordnung im Inneren des Sockelgehäuses angebracht. Sie weist zudem Anschlüsse zur elektrischen Verbindung der Stromzuführungen mit der Montageplatte auf, wobei die Stromzuführungen mittels einem in dem Gehäuse an der Montageplatte angeordneten Federelement gegen die als separate Kontaktstifte ausgebildeten elektrischen Anschlüsse der Montageplatte gedrückt werden.A further development of this simple connection is described in EP-A-0 179 251. The known low-pressure discharge lamp has a discharge vessel with electrodes and current leads and a cap, Housing and mounting plate with ballast assembly assembled base. The mounting plate is attached with the ballast arrangement inside the base housing. It also has connections for the electrical connection of the power supply lines to the mounting plate, the power supply lines being pressed against the electrical connections of the mounting plate designed as separate contact pins by means of a spring element arranged in the housing on the mounting plate.

Die EP-A-0 452 743 offenbart eine Niederdruckentladungslampe, die Haltezapfen aufweist, mit deren Hilfe die Enden der Stromzuführungen senkrecht zu den bügelförmigen Anschlussdrähten der Vorschaltanordnung ausgerichtet sind. Beim Zusammenbau von Sockelgehäuse und Montageplatte mit der Sockelkappe werden die jeweiligen zu kontaktierenden Drähte etwa im rechten Winkel hintereinander angeordnet und mit Hilfe des Haltezapfens und der Innenwand des Sockelgehäuses federnd gegeneinandergedrückt, so dass eine elektrische Verbindung zwischen den Elektroden des Entladungsgefäßes der Vorschaltanordnung hergestellt wird. Nachteilig an dem beschriebenen Stand der Technik ist jedoch, dass derartige elektrisches Verbindungssysteme sehr aufwendig ist. Dadurch erhöhen sich die Herstellungskosten. Zudem ist, um eine sichere Kontaktierung der Elemente zu gewährleisten, die Herstellungsgeschwindigkeit für derartige Niederdruckentladungslampen nicht sehr hoch.EP-A-0 452 743 discloses a low-pressure discharge lamp which has holding pins with the aid of which the ends of the current leads are aligned perpendicular to the bow-shaped connecting wires of the ballast arrangement. When assembling the base housing and mounting plate with the base cap, the respective wires to be contacted are arranged approximately at right angles one behind the other and are pressed resiliently against one another with the aid of the retaining pin and the inner wall of the base housing, so that an electrical connection is established between the electrodes of the discharge vessel of the ballast arrangement. However, a disadvantage of the prior art described is that such electrical connection systems are very complex. This increases the manufacturing costs. In addition, in order to ensure reliable contacting of the elements, the production speed for such low-pressure discharge lamps is not very high.

Es ist daher Aufgabe der Erfindung, eine kompakte Niederdruckentladungslampe der eingangs genannten Art bereitzustellen, bei der der für eine elektrische Verbindung der Stromzuführungen des Entladungsgefäßes mit den entsprechenden Anschlüssen der Vorschaltanordnung benötigte Aufbau einfach, schnell und kostengünstig unter Gewährleistung einer optimalen Kontaktsicherheit herzustellen ist.It is therefore an object of the invention to provide a compact low-pressure discharge lamp of the type mentioned at the outset, in which the structure required for an electrical connection of the power supply lines of the discharge vessel to the corresponding connections of the ballast arrangement can be produced simply, quickly and inexpensively while ensuring optimum contact reliability.

Zur Lösung dieser Aufgabe dienen die Merkmale des unabhängigen Anspruches. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.The features of the independent claim serve to solve this problem. Advantageous refinements are described in the subclaims.

Bei einer erfindungsgemäßen kompakten Niederdruckentladungslampe sind die Stromzuführungen eines Entladungsgefäßes mit den elektrischen Anschlüssen einer Montageplatte mit Vorschaltanordnung über jeweils ein Federelement, welches die Stromzuführung gegen den Anschluss drückt verbunden. Dabei ist das Federelement erfindungsgemäß in einer Kappe der Niederdruckentladungslampe angeordnet ist, wobei die Kappe mindestens eine Federaufnahme zur Aufnahme und lösbaren Befestigung des Federelementes aufweist Durch die Verwendung eines Federelementes, welches in der Kappe der Niederdruckentladungslampe angeordnet ist und Druck auf die Stromzuführung ausübt, ist eine sichere Kontaktierung gewährleistet Vorteilhafterweise wird erfindungsgemäß daher nur ein Element zur Verbindung der Stromzuführungen des Entladungsgefäßes mit den entsprechenden Anschlüssen der Montageplatte bzw. des Vorschaltgerätes benötigt. Dadurch verringern sich die Herstellungskosten deutlich. Zudem ergibt sich hieraus vorteilhafterweise eine deutliche Erhöhung der Herstellungsgeschwindigkeit, da bei dem Zusammenbau des Sockels der Niederdruckentladungslampe Sockelgehäuse und Sockelkappe lediglich aufeinandergedrückt oder geschraubt werden müssen.In the case of a compact low-pressure discharge lamp according to the invention, the current leads of a discharge vessel are connected to the electrical connections of a mounting plate with a ballast arrangement via a respective spring element which presses the current supply against the connection. According to the invention, the spring element is arranged in a cap of the low-pressure discharge lamp, the cap having at least one spring receptacle for receiving and releasably fastening the spring element. The use of a spring element, which is arranged in the cap of the low-pressure discharge lamp and exerts pressure on the power supply, is one Secure contacting is guaranteed. According to the invention, therefore, only one element is required to connect the power supply lines of the discharge vessel to the corresponding connections of the mounting plate or the ballast. This significantly reduces the manufacturing costs. In addition, this advantageously results in a significant increase in the production speed, since when the base of the low-pressure discharge lamp is assembled, the base housing and base cap only have to be pressed or screwed together.

Dabei wird vor dem Zusammenbau des Sockels das Federelement vorteilhafterweise in einer am Innenumfang der Kappe ausgebildeten Federaufnahme aufgenommen. Die Federaufnahme weist hierzu einen Hohlraum zur Aufnahme von zumindest einem Teil des Federelementes auf und ist üblicherweise im Querschnitt rechteckig ausgebildet. Dadurch können die Federelemente unabhängig von der Endmontage der Lampe montiert werden, was zu einer Vereinfachung des Herstellungsverfahrens beiträgt und somit die Herstellungskosten senkt.Before the base is assembled, the spring element is advantageously accommodated in a spring receptacle formed on the inner circumference of the cap. For this purpose, the spring receptacle has a cavity for receiving at least a part of the spring element and is usually rectangular in cross section. As a result, the spring elements can be installed independently of the final assembly of the lamp, resulting in a Simplification of the manufacturing process contributes and thus lowers the manufacturing costs.

In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Niederdruckentladungslampe ist im Hohlraum der Federaufnahme eine Schulter zur Auflage eines Bereichs des Federelementes ausgebildet Zudem ist zwischen dem Innenumfang des Gehäuses und dem Außenumfang der Kappe ein Spalt zur Aufnahme eines Endes der Stromzuführung ausgebildet. Auch diese Merkmale tragen erfindungsgemäß zur Vereinfachung des Herstellungsprozesses der Lampe bei.In a further advantageous embodiment of the low-pressure discharge lamp according to the invention, a shoulder for supporting a region of the spring element is formed in the cavity of the spring receptacle. In addition, a gap is formed between the inner circumference of the housing and the outer circumference of the cap for receiving one end of the power supply. According to the invention, these features also contribute to simplifying the lamp manufacturing process.

In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Niederdruckentladungslampe ist die Montageplatte senkrecht zur Lampenlängsachse im Inneren des Gehäuses befestigt. Die Montageplatte liegt dabei auf am Innenumfang des Gehäuses ausgebildeten Rippen, die parallel zur Lampenlängsachse verlaufen, auf. Vorteilhafterweise ist die Montageplatte als Platine ausgebildet, wobei an der dem Entladungsgefäß zugewandten Seite Leiterbahnen und auf der dem Entladungsgefäß abgewandten Seite Schaltungselemente der Vorschaltanordnung ausgebildet sind. Dabei ist mindestens ein Anschluss zur elektrischen Kontaktierung der Stromzuführung mit der Montageplatte als Lötauge ausgebildet. In einer weiteren vorteilhaften Ausbildung besteht mindestens ein Anschluss zur elektrischen Kontaktierung der Stromzuführung mit der Montageplatte aus einer oder mehreren flachen Lötflächen und/oder -streifen. Durch diesen einfachen und platzsparenden Aufbau des Sockels der Lampe ist gewährleistet, dass dieser insgesamt klein gehalten werden kann und auch kostengünstig herzustellen ist.In a further advantageous embodiment of the low-pressure discharge lamp according to the invention, the mounting plate is fastened in the interior of the housing perpendicular to the longitudinal axis of the lamp. The mounting plate lies on ribs formed on the inner circumference of the housing and running parallel to the longitudinal axis of the lamp. The mounting plate is advantageously designed as a circuit board, with conductor tracks being formed on the side facing the discharge vessel and circuit elements of the ballast arrangement being formed on the side facing away from the discharge vessel. At least one connection for making electrical contact with the power supply to the mounting plate is designed as a soldering eye. In a further advantageous embodiment, at least one connection for electrically contacting the power supply with the mounting plate consists of one or more flat soldering areas and / or strips. This simple and space-saving structure of the lamp base ensures that it can be kept small overall and is also inexpensive to manufacture.

Zur lagerichtigen Positionierung der Kappe und des Gehäuses des Sockels sind vorteilhafterweise Positionierungsvorrichtungen ausgebildet. Weitere Einzelheiten, Merkmale, Ausgestaltungen und Vorteile ergeben sich aus der folgenden Beschreibung mehrerer zeichnerisch dargestellter Ausführungsbeispiele des Erfindungsgegenstandes:Positioning devices are advantageously designed to position the cap and the housing of the base in the correct position. Further details, features, configurations and advantages result from the following description of a number of exemplary embodiments of the subject matter of the invention which are shown in the drawing:

Darin zeigen

Figur 1
eine schematisch dargestellte, seitliche Schnittansicht einer Niederdruckentladungslampe;
Figur 2
eine schematisch dargestellte Schnittzeichnung des Randbereiches der Kappe der erfindungsgemäßen Niederdruckentladungslampe;
Figur 3
eine schematisch dargestellte Aufsicht auf einen Teil des Randbereiches des Sockels der erfindungsgemäßen Niederdruckentladungslampe;
Figur 4
schematisch dargestellte Seitenansichten des Federelementes der erfindungsgemäßen Niederdruckentladungslampe.
Show in it
Figure 1
a schematically illustrated, sectional side view of a low-pressure discharge lamp;
Figure 2
a schematically illustrated sectional drawing of the edge region of the cap of the low-pressure discharge lamp according to the invention;
Figure 3
a schematically illustrated plan view of a part of the edge region of the base of the low-pressure discharge lamp according to the invention;
Figure 4
schematically illustrated side views of the spring element of the low-pressure discharge lamp according to the invention.

In Figur 1 ist eine schematisch dargestellte Schnittansicht einer kompakten Niederdruckentladungslampe 10 bzw. eines Teilbereichs des Randbereichs des Sockels 12 wiedergegeben. Die Lampe 10 umfaßt dabei ein Entladungsgefäß 14 und einen Sockel 12, wobei der Sockel 12 aus einer Kappe 16 und einem Gehäuse 18 zusammengesetzt ist. Der Sokkel 12 ist dabei im wesentlichen zylinderförmig ausgebildet. Die Kappe 16 und das Gehäuse 18 sind lösbar miteinander verbunden, wobei mindestens eine Positioniervorrichtung 48 zur lagerichtigen Verbindung der Kappe 16 und des Gehäuses 18 ausgebildet ist. Die Kappe 16 weist dabei in dem dem Gehäuse 18 zugewandten Ende eine ringförmige Wulst 20 in ihrem Außenumfang auf. Die Wulst 20 und eine Ringnut 22 im Innenumfang des Gehäuses 18 bilden einen Spalt 34 zur Aufnahme eines Endes 32 einer Stromzuführung 30 aus.FIG. 1 shows a schematically illustrated sectional view of a compact low-pressure discharge lamp 10 or a partial area of the edge area of the base 12. The lamp 10 comprises a discharge vessel 14 and a base 12, the base 12 being composed of a cap 16 and a housing 18. The base 12 is essentially cylindrical. The cap 16 and the housing 18 are detachably connected to one another, at least one positioning device 48 being designed for connecting the cap 16 and the housing 18 in the correct position. The cap 16 has in the end facing the housing 18 an annular bead 20 in its outer periphery. The bead 20 and an annular groove 22 in the inner circumference of the housing 18 form a gap 34 for receiving an end 32 of a power supply 30.

Im Inneren des im wesentlichen zylindrisch ausgebildeten Gehäuses 18 ist eine Montageplatte 24 senkrecht zur Lampenlängsachse befestigt. Die Montageplatte 24 ist als Platine ausgebildet, wobei an der dem Entladungsgefäß 14 zugewandten Seite Leiterbahnen und auf der dem Entladungsgefäß 14 abgewandten Seite Schaltungselemente der Vorschaltanordnung (nicht dargestellt) ausgebildet sind.In the interior of the essentially cylindrical housing 18, a mounting plate 24 is fastened perpendicular to the lamp axis. The mounting plate 24 is designed as a circuit board, with conductor tracks (not shown) being formed on the side facing the discharge vessel 14 and circuit elements on the side facing away from the discharge vessel 14.

Das Entladungsgefäß 14 besteht üblicherweise aus zwei oder drei U-förmig gebogenen Rohrstücken, die durch einen Durchlaß miteinander verbunden sind (nicht dargestellt), wobei jeweils die Endschenkel Elektroden tragen. Die freien Enden der Rohrstücke sind durch Quetschungen gasdicht verschlossen und sitzen innerhalb der Kappe 16 des Sockels 12. Im Bereich der Quetschungen treten die Stromzuführungen 30 aus dem Entladungsgefäß 14 aus. Eine solche Lampe wird auf Seite 1 beschrieben. Die Stromzuführungen 30 werden mittels einem Federelement 28 gegen die elektrischen Anschlüssen 26 der Montageplatte 24 gedrückt. Erfindungsgemäß greift hier das Federelement 28 in eine im Bereich des Innenumfangs der Kappe 16 ausgebildete Federaufnahme 40 ein und ist in dem gezeigten Ausführungsbeispiel lösbar darin befestigt. Die Federaufnahme 40 besteht aus Seitenwänden 41, 43, die einen Hohlraum 42 umgeben. Der Hohlraum 42 dient zur Aufnahme eines Teils des Federelementes 28 und ist im Querschnitt rechteckig ausgebildet (Fig.2).The discharge vessel 14 usually consists of two or three U-shaped pipe sections which are connected to one another by a passage (not shown), the end legs each carrying electrodes. The free ends of the pipe sections are sealed gas-tight by squeezing and are located within the cap 16 of the base 12. In the area of the squeezing, the power supply lines 30 emerge from the discharge vessel 14. Such a lamp is described on page 1. The power supply lines 30 are pressed against the electrical connections 26 of the mounting plate 24 by means of a spring element 28. According to the invention, the spring element 28 here engages in a spring receptacle 40 formed in the region of the inner circumference of the cap 16 and is detachably fastened therein in the exemplary embodiment shown. The spring receptacle 40 consists of side walls 41, 43 which surround a cavity 42. The cavity 42 serves to receive part of the spring element 28 and is rectangular in cross section (FIG. 2).

Im Hohlraum 42 ist eine Schulter 44 zur Auflage eines Bereiches 50 des Federelements 28 ausgebildet. Die den Hohlraum 42 umgebenden Seitenwände 41, 43 weisen zum freien Ende der Federaufnahme 40 hin Abschrägungen 46 auf. Diese Abschrägungen 46 erleichtern die Einführung des Federelementes 28. Zudem wird bei der Montage der Lampe 10 bzw. bei dem Zusammenbau des Sockels 12 das Ende 32 der Stromzuführung 30 in den Spalt 34 gelegt und somit lagerichtig ausgerichtet.A shoulder 44 for supporting an area 50 of the spring element 28 is formed in the cavity 42. The side walls 41, 43 surrounding the cavity 42 have bevels 46 towards the free end of the spring receptacle 40. These bevels 46 facilitate the introduction of the spring element 28. In addition, when installing the lamp 10 or Assembling the base 12, the end 32 of the power supply 30 is placed in the gap 34 and thus aligned in the correct position.

Die Montageplatte 24 weist auf der dem Entladungsgefäß 14 zugewandten Seite Anschlüsse 26 zur elektrischen Kontaktierung der Stromzuführungen 30 der Vorschaltanordnung auf. Die Anschlüsse 26 können dabei als Lötauge oder auch als flache in die Montageplatte 24 integrierte bzw. aufliegende Lötflächen und/oder -streifen ausgebildet sein.The mounting plate 24 has, on the side facing the discharge vessel 14, connections 26 for making electrical contact with the power supply lines 30 of the ballast arrangement. The connections 26 can be designed as a soldering eye or as a flat soldering surface and / or strip integrated or resting in the mounting plate 24.

Figur 2 zeigt eine Schnittansicht eines Teilbereichs des Randbereiches des Sockels 12. Man erkennt, daß das freie Ende des Gehäuses 18 mit dem freien Ende der Kappe 16 verbunden ist. Im Bereich des Innenumfangs der Kappe 16 ist die Federaufnahme 40 ausgebildet. Die Seitenwände 41, 43 umgeben den Hohlraum 42 in dem auf der im Außenumfang der Kappe 16 zugewandten Seite die Schulter 44 ausgebildet ist. Die Federaufnahme 40 ist dabei im Querschnitt im wesentlichen rechteckig ausgebildet. Weiterhin erkennt man die Abschrägung 46 der Seitenwände 41, 43. Auch die unterschiedliche Baulänge der beiden Seitenwände 41, 43 ist gut erkennbar.Figure 2 shows a sectional view of a portion of the edge region of the base 12. It can be seen that the free end of the housing 18 is connected to the free end of the cap 16. The spring receptacle 40 is formed in the region of the inner circumference of the cap 16. The side walls 41, 43 surround the cavity 42 in which the shoulder 44 is formed on the side facing the outer circumference of the cap 16. The spring receptacle 40 is essentially rectangular in cross section. Furthermore, the bevel 46 of the side walls 41, 43 can be seen. The different overall lengths of the two side walls 41, 43 can also be clearly seen.

Eine umlaufende Lasche 36 bildet den Abschluß der Kappe 16 in Richtung der Montageplatte 24. Die Lasche 36 bildet dabei an vorbestimmten Stellen domartige Fortsätze 37 aus, die in entsprechende Ausnehmungen 38 der Montageplatte 24 eingreifen. Die dornartigen Fortsätze 37 der Lasche 36 und die Ausnehmungen 38 bilden somit die Positioniervorrichtung 48.A circumferential tab 36 forms the end of the cap 16 in the direction of the mounting plate 24. The tab 36 forms dome-like extensions 37 at predetermined locations, which engage in corresponding recesses 38 in the mounting plate 24. The spike-like extensions 37 of the tab 36 and the recesses 38 thus form the positioning device 48.

Figur 3 zeigt eine Aufsicht auf eine Teil des Randbereiches des Sockels 12 der Lampe 10. Man erkennt, daß die Enden 32 der Stromzuführungen 30 in dem zwischen der umlaufenden Lasche 36 und dem Innenumfang des Gehäuses 18 gebildeten Spalt 34 zu liegen kommt. Zur lagerichtigen Positionierung der Stromzuführungen 30 unterhalb des Federelementes 28 sind am Außenumfang der Kappe 16 im Bereich der Federaufnahmen 40 jeweils Ausnehmungen 52 zur Aufnahme der Enden 32 der Stromzuführungen 30 ausgebildet.FIG. 3 shows a plan view of a part of the edge region of the base 12 of the lamp 10. It can be seen that the ends 32 of the power supply lines 30 come to lie in the gap 34 formed between the peripheral tab 36 and the inner circumference of the housing 18. For correct positioning of the power supply lines 30 below the spring element 28 are on the outer circumference of the cap 16 in the area of the spring receptacles 40 each have recesses 52 for receiving the ends 32 of the power supply lines 30.

Figur 4 zeigt in einer schematischen Darstellung die Ausbildung des Federelementes 28. Das Federelement 28 ist dabei als mehrfach gebogenes Federstahlband dargestellt Die Länge des Federelementes 28 ist derart gewählt, dass eine sichere Kontaktierung zwischen der Stromzuführung 30 und dem Anschluss 26 der Montageplatte 24 gewährleistet ist. Das Federelement 28 besteht aus Kunststoff und/oder Metall und/oder einer Metall-Legierung.Figure 4 shows a schematic representation of the design of the spring element 28. The spring element 28 is shown as a multi-curved spring steel band. The length of the spring element 28 is selected such that a reliable contact between the power supply 30 and the terminal 26 of the mounting plate 24 is guaranteed. The spring element 28 consists of plastic and / or metal and / or a metal alloy.

Das Federelement kann in einer weiteren, nicht dargestellten Ausführungsform als Spiralfeder ausgebildet sein. Auch jede andere vorteilhafte Federform ist denkbar.In a further embodiment, not shown, the spring element can be designed as a spiral spring. Any other advantageous spring shape is also conceivable.

Claims (13)

  1. Compact low-pressure discharge lamp comprising a discharge vessel (14) having electrodes and supply leads (30) and having a lamp cap (12) assembled from a cap (16), housing (18) and mounting plate (24) with a ballast arrangement, the mounting plate (24) with the ballast arrangement being fitted in the interior of the lamp cap housing (18) and having terminals (26) for the electric connection of the supply leads (30) to the mounting plate (24), and the supply leads (30) being pressed against the electric terminals (26) of the mounting plate (24) by means of a spring element (28), characterized in that the spring element (28) is arranged in the cap (16) and the cap (16) has at least one spring receptacle (40) for receiving and detachably fastening the spring element (28).
  2. Low-pressure discharge lamp according to Claim 1, characterized in that the spring receptacle (40) is formed in the region of the inner circumference of the cap (16).
  3. Low-pressure discharge lamp according to Claim 2, characterized in that the spring receptacle (40) has a cavity (42) for receiving a part of the spring element (28) and is of rectangular form in cross section.
  4. Low-pressure discharge lamp according to Claim 3, characterized in that a shoulder (44) for supporting a region (56) of the spring element (28) is formed in the cavity (42).
  5. Low-pressure discharge lamp according to Claim 4, characterized in that a gap (34) for receiving an end (32) of the supply lead (30) is formed between the inner circumference of the housing (18) and the outer circumference of the cap (16).
  6. Low-pressure discharge lamp according to one of the preceding claims, characterized in that the spring element (28) comprises a spring steel strip bent one or more times or a spiral spring.
  7. Low-pressure discharge lamp according to one of the preceding claims, characterized in that the spring element (28) consists of plastic and/or metal and/or a metal alloy.
  8. Low-pressure discharge lamp according to one of the preceding claims, characterized in that the lamp cap (12) is of a substantially cylindrical form.
  9. Low-pressure discharge lamp according to one of the preceding claims, characterized in that the cap (16) and the housing (18) are detachably connected to each other, at least one positioning device (48) being formed for connecting the cap (16) and housing (18) in the correct position.
  10. Low-pressure discharge lamp according to one of the preceding claims, characterized in that the mounting plate (24) is fastened perpendicular to the longitudinal lamp axis in the interior of the housing (18).
  11. Low-pressure discharge lamp according to one of the preceding claims, characterized in that the mounting plate (24) is formed as a printed circuit board, conductor tracks being formed on the side facing the discharge vessel (14), and circuit elements of the ballast arrangement being formed on the side averted from the discharge vessel (14).
  12. Low-pressure discharge lamp according to one of the preceding claims, characterized in that at least one terminal (26) is formed as a soldering eyelet for the purpose of making electric contact between the supply leads (30) and the mounting plate (24).
  13. Low-pressure discharge lamp according to one of the preceding claims, characterized in that at least one terminal (26) comprises one or more flat soldering surfaces and/or solder tag strips for the purpose of making electric contact between the supply leads (30) and the mounting plate (24).
EP98121414A 1997-12-11 1998-11-11 Compact low pressure discharge lamp Expired - Lifetime EP0923105B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19755171A DE19755171A1 (en) 1997-12-11 1997-12-11 Compact low pressure discharge lamp
DE19755171 1997-12-11

Publications (2)

Publication Number Publication Date
EP0923105A1 EP0923105A1 (en) 1999-06-16
EP0923105B1 true EP0923105B1 (en) 2003-01-29

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Application Number Title Priority Date Filing Date
EP98121414A Expired - Lifetime EP0923105B1 (en) 1997-12-11 1998-11-11 Compact low pressure discharge lamp

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US (1) US6239540B1 (en)
EP (1) EP0923105B1 (en)
JP (1) JP4221095B2 (en)
KR (1) KR100602391B1 (en)
CN (1) CN1149608C (en)
CA (1) CA2255177C (en)
DE (2) DE19755171A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7514872B2 (en) * 2005-09-08 2009-04-07 Osram Sylvania Inc. Reflector lamp with engaging electrical contact
CN102062368B (en) * 2010-09-28 2013-07-31 上海亚明灯泡厂有限公司 Replacement support lamp tube and lamp head cover
CN104246963B (en) 2012-04-26 2017-03-01 皇家飞利浦有限公司 Grounding connection to lamp casing
CN104246962B (en) * 2012-04-26 2016-08-31 皇家飞利浦有限公司 There is in base the discharge lamp in contact path
CN105225768B (en) * 2015-10-12 2017-03-01 中北大学 A kind of preparation method of the flexible silver-plated functional particles conducting film of sandwich structure

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NL40602C (en) * 1935-04-02
DD145143A1 (en) * 1979-07-13 1980-11-19 Reinhard Butz SURFACE INTERMEDIATE CONTACT BETWEEN ODENKONTAKTSTUECK AND POWER SUPPLY WIRE OF AN ELEKT ISCHEN LAMP
DE3412461A1 (en) * 1984-04-03 1985-10-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München SOCKET FOR A SINGLE-SIDED BASED HIGH-PRESSURE DISCHARGE LAMP
EP0179251A2 (en) * 1984-10-25 1986-04-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Mercury vapour low-pressure discharge lamp having a single base
DE8431386U1 (en) * 1984-10-25 1986-02-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Adapter for a single-ended low-pressure discharge lamp
DE68912002T2 (en) * 1988-07-01 1994-07-07 Philips Nv Electric lamp.
DE4012684A1 (en) * 1990-04-20 1991-10-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Compact low-pressure discharge lamp with switching arrangement
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HU214132B (en) * 1994-01-25 1997-12-29 Ge Lighting Tungsram Rt Discharge lamp having its cap at one side
JPH09306203A (en) * 1996-05-10 1997-11-28 Koito Mfg Co Ltd Socket for discharge lamp bulb
KR200144548Y1 (en) * 1996-06-15 1999-06-15 조성호 Ballasts for Compact Fluorescent Lamps
DE19701162A1 (en) * 1997-01-15 1998-07-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Compact low pressure discharge lamp
DE19709928A1 (en) * 1997-03-11 1998-09-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogen light bulb and socket

Also Published As

Publication number Publication date
JPH11250726A (en) 1999-09-17
CA2255177C (en) 2008-01-29
DE19755171A1 (en) 1999-06-17
CN1219746A (en) 1999-06-16
JP4221095B2 (en) 2009-02-12
CA2255177A1 (en) 1999-06-11
US6239540B1 (en) 2001-05-29
KR19990062985A (en) 1999-07-26
KR100602391B1 (en) 2007-08-16
EP0923105A1 (en) 1999-06-16
DE59807060D1 (en) 2003-03-06
CN1149608C (en) 2004-05-12

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