EP0076503A2 - Lampe à décharge à basse pression à un seul culot et méthode de fabrication - Google Patents

Lampe à décharge à basse pression à un seul culot et méthode de fabrication Download PDF

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Publication number
EP0076503A2
EP0076503A2 EP82109150A EP82109150A EP0076503A2 EP 0076503 A2 EP0076503 A2 EP 0076503A2 EP 82109150 A EP82109150 A EP 82109150A EP 82109150 A EP82109150 A EP 82109150A EP 0076503 A2 EP0076503 A2 EP 0076503A2
Authority
EP
European Patent Office
Prior art keywords
plate
outer bulb
pressure discharge
shaped inner
discharge lamp
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.)
Granted
Application number
EP82109150A
Other languages
German (de)
English (en)
Other versions
EP0076503A3 (en
EP0076503B1 (fr
Inventor
Gerhard Dr. Steeger
Josef Plischke
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 EP0076503A2 publication Critical patent/EP0076503A2/fr
Publication of EP0076503A3 publication Critical patent/EP0076503A3/de
Application granted granted Critical
Publication of EP0076503B1 publication Critical patent/EP0076503B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels

Definitions

  • the invention relates to a Nicder pressure discharge lamp with a base on one side, which essentially consists of a foot part, an outer bulb connected to it in a gastight manner and containing a gas and / or metal vapor filling, two preheatable electrodes arranged inside the outer bulb on the foot part, and at least one likewise arranged inside the outer bulb U-shaped inner tube is made of glass, the end of one of the straight legs of each inner tube enclosing a preheatable electrode in a gas-tight manner and the end of each other straight leg to the outer bulb having an opening which is arranged in the vicinity of the foot part.
  • Lamps with such a construction are referred to as compact lamps because of their greatly shortened design compared to conventional low-pressure discharge lamps.
  • these lamps can be operated in standard incandescent lamp holders.
  • Such compact lamps are therefore suitable with a corresponding design for the direct replacement of incandescent lamps. Due to their higher efficiency for converting the absorbed electrical energy into visible light and due to their longer lifespan, compact lamps are more economical than incandescent lamps. Despite this clear advantage, compact lamps have so far not been able to survive put.
  • a low-pressure discharge lamp with a base on one side in which at least one U-shaped inner tube is arranged in an outer bulb in a gas-tight manner with the first end of a preheatable electrode and with the other end having an opening towards the lamp bulb.
  • the gas-tight fusion between the U-shaped inner tube and the preheatable electrode on the one hand and the outer bulb surrounding the gas filling on the other hand takes place by means of a fusion glass and a chrome iron plate serving as a foot part.
  • the soldering of all parts with this fusion glass requires a complex and therefore relatively expensive manufacturing technique. In addition, this process is less suitable for the production of large quantities on fully automatic machines due to the frequent soldering errors.
  • the object of the invention is to provide a low-pressure discharge lamp of the type mentioned at the beginning which, as a compact lamp with low power consumption, is comparable in form and light output to an incandescent lamp and thus in existing lamps is usable.
  • the lamp construction should enable production on machines with high performance in order to be able to offer the end product at a reasonable price.
  • a low-pressure discharge lamp with the features mentioned in the preamble of the main claim is characterized in that the foot part is a preformed plate made of glass, which has an upper receiving part directed towards the lamp interior, in which the two preheatable electrodes and the first end of each U-shaped Inner tube is melted and which is further provided with a lower, outwardly directed, concentrically arranged to the lamp longitudinal axis edge, which is fused to the outer bulb, the receiving part and the edge being connected by an essentially hollow cylindrical middle part.
  • the operating voltage of the lamp and thus its power consumption is advantageously increased by lengthening the discharge path by assigning a U-shaped inner tube to each of the two preheatable electrodes.
  • the longitudinal axes of the straight legs of both U-shaped inner tubes essentially form the corner points of a rhombus or a square, the diagonals of which form an intersection lying on the lamp longitudinal axis.
  • the gas-tight melting of the first ends of the U-shaped inner tubes with the preheatable electrodes and the upper receiving part of the preformed plate directed towards the lamp interior is in the form of a pinch, the length of the pinch corresponding approximately to the length of the receiving part.
  • This part of the upper plate which receives the first ends of the U-shaped inner tubes has an elongated circular opening, the width of which, before the squeezing process is slightly larger than the outer diameter of the inner tubes.
  • the sections connecting the semicircular end pieces of the elongated round opening can be drawn in to the lamp longitudinal axis, so that the shape of a figure eight approximates when viewed from above.
  • the lower, outwardly directed plate rim is circular and concentric with the lamp longitudinal axis, the diameter of which is adapted to the inner diameter of the outer bulb, which is preferably light-scattering.
  • the gas-tight fusion of these two parts can largely take place on conventional melting machines for incandescent lamps.
  • the central part connecting the elongated, round receiving part and the concentric edge of the preformed plate is designed as a hollow cylinder.
  • the diameter of the central part is both smaller than the length of the receiving part and smaller than the diameter of the edge of the preformed plate.
  • the discharge vessel consisting of outer bulbs and in particular the U-shaped inner tubes, preferably contains mercury and an inert gas as the filling.
  • an amalgam-forming substance can be applied inside, in the vicinity of the closed end. This has the effect that the mercury which has migrated into the outer bulb as a result of the thermal conditions occurring during operation is recirculated in a constant dynamic process, so that the entire volume of the inner tube or tubes is filled uniformly with mercury vapor.
  • the UV radiation generated by the low-pressure discharge is emitted by means of appropriate phosphor coatings on the inner surface of the inner tubes and, if appropriate, on the Inner surface of the outer bulb converted into visible radiation. It has proven to be advantageous to use a so-called three-band phosphor which contains individual components emitting red, green and blue.
  • the coating of the outer bulb insofar as it has not been provided with a phosphor layer, different embodiments are possible. As is common with incandescent lamps, a clear glass or a light-scattering surface, such as internal matting or a siliconized coating possible.
  • the outer bulb is provided at the electrode end with a base via which the lamp is electrically connected.
  • An electrical screw base is advantageously used, which can be used in conventional incandescent lamp holders.
  • the lamp can also be equipped with any other base.
  • the lamp can be operated in any corresponding bulb holder.
  • the lamp according to the invention can also be operated via a conventional ballast choke, which is e.g. designed as an adapter to the lamp or is part of the lamp.
  • the low-pressure discharge lamp is produced in a simple manner.
  • the preformed plate plays a major part in this.
  • a glass tube the diameter of which corresponds to the central part of the finished preformed plate, is placed on one end, which creates the outward edge of the plate.
  • This plate blank will placed in a rotating receptacle, which also causes it to rotate, and is gradually brought to a temperature suitable for the deformation of the glass in the upper, cylindrical region.
  • An inner mold is then inserted into the heated plate blank from above and two outer mold halves are closed from the outside around the upper part, as a result of which the heated upper plate part is given the desired shape of the receiving part with the elongated, round opening.
  • the holder for the plate does not turn during the forming process.
  • the shaping tools for the elongated round opening of the receiving part can be designed differently.
  • the elongated round opening can have straight or indented side surfaces, similar to an eight.
  • a frame provided with the preheatable electrodes advantageously has one-piece power supply lines which can be held, for example, by means of a pearl base.
  • racks held in a receptacle are also conceivable during the squeezing process.
  • multi-part power supplies can also be used.
  • the preformed plate is placed over two of these frames, which are held at a defined distance. Then, from above, the two U-shaped inner tubes, each with their first straight legs out in the upper, elongated, round part of the preformed plate in such a way that their non-phosphor-coated first ends surround the frames.
  • the parts assembled in this way are heated in the region of the receiving part of the plate to a temperature suitable for the deformation of the glass.
  • both vessel seals of the U-shaped inner tubes are produced in a single operation.
  • the further processing to the finished lamp is largely carried out according to known work steps.
  • the outer bulb is fused with the lower edge of the plate, which is arranged concentrically to the lamp axis, on a melting machine with neck waste, or the piston neck brought to the deformation temperature is pressed against the heated edge of the plate by means of a roller. After pumping, filling and socketing, the lamp is ready for operation.
  • the low-pressure discharge lamp according to the invention has good lighting properties.
  • the interior structure described above is simple both in terms of construction and production technology and results in a sufficient length of the discharge path.
  • the preformed plate 1 shown in FIGS. 1 and 2 has an upper receiving part 2 directed towards the inside of the lamp, which has the shape of an elongated round opening in plan view. This opening is provided for receiving the first ends of the U-shaped inner tubes.
  • the clear width B is adapted to the outer diameter of the inner tubes and the length L corresponds approximately to the length of the subsequent crushing.
  • the sections connecting the semicircular end pieces of the elongated round opening have constrictions 16 to the longitudinal axis of the lamp, which approximately results in the shape of an eight.
  • the lower, outwardly directed edge 3 of the plate 1 is circular and forms the future line of fusion with the outer bulb.
  • the middle part 4 between the receiving part 2 and the edge 3 is formed by a substantially hollow cylindrical piece, the diameter of which is both smaller than that of the edge 3 and smaller than the length L of the receiving part.
  • the height of the plate 1 is approximately 25 mm and the edge 3 has a diameter of approximately 37 mm to 40 mm.
  • the diameter of the hollow cylindrical middle part is approximately 30 mm.
  • FIG. 3 shows a U-shaped inner tube 5 with two straight legs 6 and 7.
  • the first leg 6 is approximately 10 mm longer than the other leg 7.
  • the extended end 8 of the first leg 6 is provided for insertion into the receiving part 2 of the plate 1 and does not have a fluorescent coating.
  • the other leg 7 has a remaining opening 9 at its lower end.
  • the inner tube 5 has an outer diameter of approximately 12 mm. With a wall thickness of approx. 1.0 mm, the inner diameter is approx. 10.0 mm. There is a free space of approximately 3 mm between the legs 6 and 7.
  • the preassembled basic structure in FIG. 4 illustrates the arrangement of two identical fluorescent-coated U-shaped inner tubes 5 and 5 'in the receiving part 2 of the plate 1 in a top view.
  • the four legs 6, 7 and 6 ', 7' run parallel to one another, their longitudinal axes forming the corner points of a rhombus or a square.
  • the diagonals D and D 'connecting the corner points intersect in the lamp longitudinal axis.
  • the preheatable electrodes (not shown) which have a pearl base are located within the legs 6 and 6 '.
  • the preassembled basic structure held in this way is heated and crushed along the length L of the elongated, round opening of the receiving part 2.
  • a pump tube (not shown) arranged in the longitudinal axis of the lamp is squeezed into the receiving part 2 from the underside of the plate 1.
  • the squeezed, pre-assembled basic structure from FIG. 4 is then a tubular outer bulb 10 with an outer diameter of approximately 38 mm to about 50 mm, which is fused to the lower edge 3 of the plate 1.
  • This production stage is shown in FIG. 5.
  • the power supplies 13 and 13 ' can be made in one or more parts.
  • a copper sheathed wire is particularly suitable as the material.
  • the pump tube 11 is melted close to the fusion between the outer bulb 10 and the edge 3 of the plate 1 and provided with a base 14, as shown in FIG.
  • a base 14 for direct connection to the network - e.g. when exchanged for an incandescent lamp - an electronic ignition and ballast device can be integrated in the base sleeve 15.
  • a low-pressure discharge lamp according to the invention has a discharge length of approximately 460 mm through the two U-shaped inner tubes.
  • the compact lamp contains mercury in a quantity of approx. 10 mg and approx. 300 Pa argon. With a power input of approx. 15 W, the lamp has an operating voltage of approx. 100 V and a lamp current of approx. 170 mA. The luminous flux is around 1000 lm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP82109150A 1981-10-06 1982-10-04 Lampe à décharge à basse pression à un seul culot et méthode de fabrication Expired EP0076503B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813139732 DE3139732A1 (de) 1981-10-06 1981-10-06 Einseitig gesockelte niederdruckentladungslampe und verfahren zur herstellung
DE3139732 1981-10-06

Publications (3)

Publication Number Publication Date
EP0076503A2 true EP0076503A2 (fr) 1983-04-13
EP0076503A3 EP0076503A3 (en) 1983-11-09
EP0076503B1 EP0076503B1 (fr) 1987-01-21

Family

ID=6143520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109150A Expired EP0076503B1 (fr) 1981-10-06 1982-10-04 Lampe à décharge à basse pression à un seul culot et méthode de fabrication

Country Status (4)

Country Link
US (1) US4441050A (fr)
EP (1) EP0076503B1 (fr)
JP (1) JPS5871555A (fr)
DE (2) DE3139732A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118834A1 (fr) * 1983-03-04 1984-09-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à basse pression avec culot à un côté et procédé de fabrication
EP0118100B1 (fr) * 1983-03-04 1988-01-27 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à basse pression avec culot à un côté
WO1995027999A1 (fr) * 1994-04-11 1995-10-19 Ge Lighting Limited Couche de phosphore pour lampe a decharge sans electrode
EP0838833A3 (fr) * 1996-10-25 1998-06-03 Stanley Electric Co., Ltd. Préforme de lampe fluorescente, lampe fluorescente fabriqué au moyen de la préforme et procédé de fabrication

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216334A (ja) * 1982-06-11 1983-12-16 Hitachi Ltd 電球形蛍光ランプの製造方法
JPS6027254U (ja) * 1983-07-26 1985-02-23 株式会社ミクニ 燃焼制御回路
USD289798S (en) 1984-12-24 1987-05-12 U.S. Philips Corporation Fluorescent lamp
USD292130S (en) 1985-02-01 1987-09-29 Hitachi, Ltd. Fluorescent lamp
USD356874S (en) 1993-07-15 1995-03-28 Matsushita Electronics Corporation Fluorescent lamp
USD353901S (en) 1993-07-15 1994-12-27 Matsushita Electronics Corporation Fluorescent lamp
USD353900S (en) 1993-07-15 1994-12-27 Matsushita Electronics Corporation Fluorescent lamp
USD353902S (en) 1993-07-15 1994-12-27 Matsushita Electronics Corp. Fluorescent lamp
US5528105A (en) * 1994-07-15 1996-06-18 General Electric Company Copper-steel composite lead wire and use in incandescent filament electric lamps
WO2007130126A1 (fr) * 2006-04-28 2007-11-15 Eveready Battery Company, Inc. Lentille amÉliorÉe et structure de lentilles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2001501A (en) * 1933-03-10 1935-05-14 Gen Electric Gaseous electric discharge device
JPS4935796A (fr) * 1972-08-09 1974-04-02
NL179854C (nl) * 1977-08-23 1986-11-17 Philips Nv Lagedrukkwikdampontladingslamp.
JPS54155675A (en) * 1978-05-30 1979-12-07 Matsushita Electronics Corp Small-sized fluorescent lamp
JPS5778749A (en) * 1980-10-31 1982-05-17 Matsushita Electric Works Ltd Fabrication of low pressure discharge lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118834A1 (fr) * 1983-03-04 1984-09-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à basse pression avec culot à un côté et procédé de fabrication
EP0118100B1 (fr) * 1983-03-04 1988-01-27 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à basse pression avec culot à un côté
WO1995027999A1 (fr) * 1994-04-11 1995-10-19 Ge Lighting Limited Couche de phosphore pour lampe a decharge sans electrode
EP0838833A3 (fr) * 1996-10-25 1998-06-03 Stanley Electric Co., Ltd. Préforme de lampe fluorescente, lampe fluorescente fabriqué au moyen de la préforme et procédé de fabrication

Also Published As

Publication number Publication date
EP0076503A3 (en) 1983-11-09
US4441050A (en) 1984-04-03
DE3139732A1 (de) 1983-04-21
EP0076503B1 (fr) 1987-01-21
JPS5871555A (ja) 1983-04-28
DE3275252D1 (en) 1987-02-26

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