EP0564424A2 - Partie supérieure de la douille d'une lampe à décharge dans un gaz - Google Patents

Partie supérieure de la douille d'une lampe à décharge dans un gaz Download PDF

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Publication number
EP0564424A2
EP0564424A2 EP93850004A EP93850004A EP0564424A2 EP 0564424 A2 EP0564424 A2 EP 0564424A2 EP 93850004 A EP93850004 A EP 93850004A EP 93850004 A EP93850004 A EP 93850004A EP 0564424 A2 EP0564424 A2 EP 0564424A2
Authority
EP
European Patent Office
Prior art keywords
base
compact fluorescent
lamp
flange
ballast
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.)
Withdrawn
Application number
EP93850004A
Other languages
German (de)
English (en)
Other versions
EP0564424A3 (fr
Inventor
Mats Sandgren
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.)
Auralight AB
Original Assignee
Lumalampan AB
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 Lumalampan AB filed Critical Lumalampan AB
Publication of EP0564424A2 publication Critical patent/EP0564424A2/fr
Publication of EP0564424A3 publication Critical patent/EP0564424A3/xx
Withdrawn legal-status Critical Current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 present invention relates to the upper-part of a lamp socket or base, preferably the base of a gas discharge lamp, and then particularly to a gas discharge lamp of the compact fluorescent lamp kind.
  • the bases of compact tubes i.e. the tubes of low-pressure gas discharge lamps
  • the bases of compact tubes are provided with a two-part base, of which the upper-part serves essentially as a lid or cover.
  • the bottom part of the base encloses a starter which functions to ignite the tube and maintain the lamp in operation and is normally provided with an upwardly facing opening and constructed from an electrically insulating material, and electrical pin connectors which extend downwardly from the base and which function to supply electricity to the lamp.
  • the joint between the upper and the lower-parts of the base has hitherto lain outside the type of tube holder standard for this type of lamp.
  • the upper-part of the base merely comprises a lid or cover. This lid is normally let into the housing and forms the major part of the end wall of the housing.
  • the housing of a compact fluorescent lamp with integrated ballast must also house a choke, the housing is relatively large and extends way beyond the lamp holder in a lamp fitting. Consequently, an incomplete join between the housing and the upper-part of the lamp base will lie within a region of the lamp fitting in which the fluorescent tube is used and which can be touched physically. The join is also located in that region of the fluorescent tube which is gripped when screwing the tube into or out of the fitting.
  • the use of a base upper-part which is comparable with an undershot lid or cover, is not without risk when considering the fact that naked current conductors or electric wires pass at some millimeters distance from the join between a base housing and its cover member. These electric conductors may well be live when a person changes a tube which has extinguished.
  • the object of the present invention is to provide a base upper-part which is totally reliable with respect to electrical safety. Another object is to provide a base upper-part which can be used with the two types of small gas discharge lamps of the kind now used to an increasing extent in home environments, namely compact discharge tubes and fluorescent lamps with integrated ballast.
  • compact fluorescent tubes require separate lamp fittings which incorporate a choke means which controls the current to the lamp.
  • the incandescent bulb can be replaced with compact fluorescent lamps. Since such fittings are not provided with a choke means, it is necessary for the screw base of the fluorescent lamp to house all the ballast necessary for lamp operation, i.e. in addition to the choke means also a glow filament means and a capacitor capacitor means, which may be incorporated one in the other.
  • the base has been extended with a housing such that the combined volume of the base and housing corresponds to the space required by the ballast.
  • the housing preferably has a rectangular cross-section with rounded corners.
  • lamps of the kind in question are preferably produced as semi-manufactures, and only a relatively small number are produced complete.
  • the amount of capital tied-up is sufficiently large nevertheless, while both compact fluorescent tubes and fluorescent tube lamps with integrated ballast are produced in designs of different wattages - 7 watts, 11 watts, 15 watts and 20 watts.
  • semi-manufacture enables the actual fluorescent tube part of the lamp, these tubes normally being of two-finger or four-finger construction and being totally the same for the two types of lamps mentioned, to be manufactured complete and provided with either a compact fluorescent tube base or an E27-base, according to orders placed at the factory.
  • the cathode and switch-equipped tubes which have been coated with fluorescent substances and heat-sealed, are attached to the upper-part of a base in accordance with the invention, with the aid of a thermo-setting, silicone resin cement.
  • this unit is connected to the base of a compact fluorescent tube or to an E27-base with the aforesaid housing mounted in place, wherein two current conductors, or electric wires, are connected in the first instance to the electric pins and, in the second instance, to the metal screw thread and bottom contact respectively. The remaining two electrical conductors are connected across a glow filament and a capacitor, which are connected in parallel.
  • the aforesaid upper base-part and lower base-part are conveniently made of a resilient material, such as a fiberglass reinforced polycarbonate or a polytetramethylene terphthalate (PBT) such that said upper base-part and said lower base-part will snap into engagement with one another this snap.
  • a resilient material such as a fiberglass reinforced polycarbonate or a polytetramethylene terphthalate (PBT) such that said upper base-part and said lower base-part will snap into engagement with one another this snap.
  • This snap-on arrangement is achieved through the agency of a groove which extends, preferably continuously, circumferentially around the inner surface of the flange, and a bead or ridge which extends, optionally continuously, around the outside of the under base-part at an adapted height, so as to snap-into the groove when the two base-parts are brought together. Because the vertical extension and the width of the bead or ridge accurately correspond to the depth and width of the groove, a stable and durable join is obtained between the upper and lower-parts of the base. In order to obtain a secure join between the upper and the lower base-parts, it is essential that the bead or ridge will fill the groove to the greatest possible extent.
  • the stability of this join is also assisted by the fact that the upper edge of the lower-part of the base abuts a shoulder on the inner surface of the flange, after snapping said base-parts together.
  • This shoulder is located above the groove.
  • an additional shoulder may be formed on the outer surface of the lower-part of the base at a height or level such that, when fitted, the lower edge of the flange will tightly abut said shoulder.
  • the axial extension of the flange must be restricted with respect to those standardized lamp holders that are intended for compact fluorescent tubes with external ballast. Consequently, the length of the flange in the longitudinal direction of the lamp is curtailed so that its lower edge will reach the upper edge of the lamp holder. Because there is nothing to restrict the'height that the upper-part of the base can be given over the base of a compact fluorescent tube with external ballast, other than the need to be stable against radially directed forces, it has been possible to adapt the upper-part of the base to the base of the compact fluorescent lamp with integrated ballast.
  • a coherent discharge chamber of a small gas discharge lamp is enclosed in two or.more, series-connected glass tubes 1, 1'.
  • Each of the glass tubes is provided with a respective cathode fixedly mounted distal from the ends 2, 3 of the coherent discharge chamber, as seen in the direction of the discharge path.
  • the ends 2, 3 of the glass tubes extend through holes 6 provided in the upper surface 4 of an upper base-part 5, and are permanently cemented to the inner surface of said upper base-part.
  • the upper base-part 5 has a rectangular cross-section with pronouncedly rounded corners and is preferably manufactured from PBT, so as to be resilient to a limited extent.
  • the upper base-part 5 includes a flange 7 which extends at right angles from the sides of the upper surface 4 of said base-part, and a groove 8 which extends continuously around the flange 7.
  • the flange 7 includes a lower locking wall 18 which is thinner than the remainder of the flange.
  • the locking wall has a given degree of resilience which enables it to coact with grooved locking means 10; 15 on a lower base-part 9;11.
  • the electric wires of the cathodes of the discharge tubes 1, 1' are first connected to the ballast mounted in the lower base-part 9 and the flange 7 is then fitted over the outer surfaces of the lower base-part 9.
  • the upper base-part 5 is then pressed down onto the lower base-part 9, so that a bead or ridge 10 extending around the surface of the widest part of said lower base-part snaps into the groove 8 on the inner surface of the flange 7.
  • a base upper-part 5 together with discharge tubes 1, 1' attached thereto is passed over a housing 11 fitted to an E27-base 12, subsequent to having connected the lamp cathodes to the ballast mounted in the housing 11.
  • a shoulder 14 provided on the housing 11 approaches the bottom edge 13 of the upper base-part 5, a bead or ridge 15 snaps into the groove 8.
  • the upper edge 16 of the housing 11 will therewith also come into contact with a shoulder 17 formed on the inner surface of the flange 7 in the base upper-part 5, therewith enhancing the stability of the thus combined screw base.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP93850004A 1992-01-10 1993-01-08 Partie supérieure de la douille d'une lampe à décharge dans un gaz Withdrawn EP0564424A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9200057 1992-01-10
SE9200057A SE469675B (sv) 1992-01-10 1992-01-10 Sockeloeverdel av elektriskt isolerande, eftergivligt material foer belysningslampor

Publications (2)

Publication Number Publication Date
EP0564424A2 true EP0564424A2 (fr) 1993-10-06
EP0564424A3 EP0564424A3 (fr) 1994-01-05

Family

ID=20384981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93850004A Withdrawn EP0564424A2 (fr) 1992-01-10 1993-01-08 Partie supérieure de la douille d'une lampe à décharge dans un gaz

Country Status (2)

Country Link
EP (1) EP0564424A2 (fr)
SE (1) SE469675B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607208A1 (de) * 1996-02-26 1997-08-28 Holzer Walter Prof Dr H C Ing Leuchtstofflampe mit auswechselbarem Leuchtteil
AU707188B3 (en) * 1998-03-24 1999-07-08 Powerone Electronic Co., Ltd PL lamp holder
DE19834035A1 (de) * 1998-07-29 2000-02-17 Walter Holzer Kompakt-Niederspannungs-Energiesparlampe
US7224125B2 (en) 2002-10-04 2007-05-29 International Rectifier Corporation Dimmable fluorescent lamp package
EP1798746A2 (fr) 2006-12-22 2007-06-20 Professional Products M. Naumann GmbH Dispositif d'éclairage
WO2008145570A2 (fr) * 2007-05-25 2008-12-04 Osram Gesellschaft mit beschränkter Haftung Ensemble constitué d'une lampe et d'une douille de lampe
US7753558B2 (en) 2002-10-04 2010-07-13 International Rectifier Corporation Compact fluorescent lamp package

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004769A1 (fr) * 1984-04-09 1985-10-24 Nigg Juerg Procede de raccordement liberable d'appareils d'eclairage electriques, adaptateur respectivement ballast et circuit avec un generateur haute frequence
DE8431416U1 (de) * 1984-10-25 1987-08-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Einseitig gesockelte Quecksilberdampfniederdruckentladungslampe
US4879494A (en) * 1987-02-26 1989-11-07 Gte Products Corporation Fluorescent lamp starter assembly
EP0346782A1 (fr) * 1988-06-13 1989-12-20 Skyline Holding Ag Lampe à décharge comportant un culot normalisé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004769A1 (fr) * 1984-04-09 1985-10-24 Nigg Juerg Procede de raccordement liberable d'appareils d'eclairage electriques, adaptateur respectivement ballast et circuit avec un generateur haute frequence
DE8431416U1 (de) * 1984-10-25 1987-08-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Einseitig gesockelte Quecksilberdampfniederdruckentladungslampe
US4879494A (en) * 1987-02-26 1989-11-07 Gte Products Corporation Fluorescent lamp starter assembly
EP0346782A1 (fr) * 1988-06-13 1989-12-20 Skyline Holding Ag Lampe à décharge comportant un culot normalisé

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607208A1 (de) * 1996-02-26 1997-08-28 Holzer Walter Prof Dr H C Ing Leuchtstofflampe mit auswechselbarem Leuchtteil
DE19607208C2 (de) * 1996-02-26 2002-02-21 Walter Holzer Leuchtstofflampe mit auswechselbarem Leuchtteil
AU707188B3 (en) * 1998-03-24 1999-07-08 Powerone Electronic Co., Ltd PL lamp holder
DE19834035A1 (de) * 1998-07-29 2000-02-17 Walter Holzer Kompakt-Niederspannungs-Energiesparlampe
DE19834035B4 (de) * 1998-07-29 2004-05-06 Holzer, Walter, Prof. Dr.h.c. Ing. Kompakt-Niederspannungs-Energiesparlampe
US7224125B2 (en) 2002-10-04 2007-05-29 International Rectifier Corporation Dimmable fluorescent lamp package
US7633230B2 (en) 2002-10-04 2009-12-15 International Rectifier Corporation Dimmable fluorescent lamp package
US7753558B2 (en) 2002-10-04 2010-07-13 International Rectifier Corporation Compact fluorescent lamp package
EP1798746A2 (fr) 2006-12-22 2007-06-20 Professional Products M. Naumann GmbH Dispositif d'éclairage
EP1798746A3 (fr) * 2006-12-22 2007-12-12 Professional Products M. Naumann GmbH Dispositif d'éclairage
WO2008145570A2 (fr) * 2007-05-25 2008-12-04 Osram Gesellschaft mit beschränkter Haftung Ensemble constitué d'une lampe et d'une douille de lampe
WO2008145570A3 (fr) * 2007-05-25 2009-04-16 Osram Gmbh Ensemble constitué d'une lampe et d'une douille de lampe

Also Published As

Publication number Publication date
SE469675B (sv) 1993-08-16
SE9200057L (sv) 1993-07-11
SE9200057D0 (sv) 1992-01-10
EP0564424A3 (fr) 1994-01-05

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