EP0279249B1 - Hochdruckentladungslampe - Google Patents

Hochdruckentladungslampe Download PDF

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Publication number
EP0279249B1
EP0279249B1 EP88101262A EP88101262A EP0279249B1 EP 0279249 B1 EP0279249 B1 EP 0279249B1 EP 88101262 A EP88101262 A EP 88101262A EP 88101262 A EP88101262 A EP 88101262A EP 0279249 B1 EP0279249 B1 EP 0279249B1
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
pressure discharge
lamp according
spring
jacket
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
EP88101262A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0279249A3 (en
EP0279249A2 (de
Inventor
Joachim Dassler
Detlef Dr. Girod
Klaus Kramer
Ingrid Liesch
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 EP0279249A2 publication Critical patent/EP0279249A2/de
Publication of EP0279249A3 publication Critical patent/EP0279249A3/de
Application granted granted Critical
Publication of EP0279249B1 publication Critical patent/EP0279249B1/de
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
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers

Definitions

  • a high-pressure discharge lamp is known from EP-O 066 783 A2, which has an ellipsoidal outer bulb, one end of which is designed as a dome and the other end of which is provided with a base.
  • a discharge vessel is held on the longitudinal axis of the outer bulb, in which the end facing the base is connected to the base by means of a rigid pole wire and between the end facing away from the base and the part of the outer bulb designed as a dome, a spring part is arranged. This spring part is intended to compensate for different length tolerances of the discharge vessel and thermal expansions.
  • JP-GM 48 24 367 a helical holding wire is provided to compensate for temperature loss, which is wound at one end around the pump tube of the discharge vessel and is attached at the other end to the rigid holding wire.
  • the holding wire is intended to compensate for the thermal expansion of the discharge vessel and at the same time heat up the pump tube during lamp operation.
  • the object of the invention is to provide a holder for a discharge vessel which, with precise axial centering thereof, acts force-free on the melting of the outer bulb.
  • FIGS. 1 and 2 show a tubular high-pressure sodium discharge lamp 1 with an electrical power consumption of 70 W, which has a tubular envelope bulb 2 made of quartz, which is sealed at each end by a pinch 3 and is provided with a base 4 of the R 7s type. Within each pinch 3, a sealing film 5 made of molybdenum is squeezed in a known manner.
  • a tubular discharge vessel 6 made of aluminum oxide ceramic is coaxially held within the envelope bulb 2.
  • the discharge vessel 6 is provided with a gas-tight seal at each end, through which a tubular power supply 7 made of niobium is guided with an electrode 8 made of tungsten.
  • the holder of the discharge vessel 6 according to the invention is explained in detail in FIGS. 4 and 5.
  • a getter plate 10 is mounted in the evacuated space between the envelope bulb 2 and the discharge vessel 6 and is connected to a component of the holder is.
  • FIG. 3 shows another embodiment of a high-pressure sodium discharge lamp 11 with an electrical power consumption of 70 W.
  • the envelope piston 12 is made of hard glass, so that the sealing foils made of molybdenum, which are otherwise required in the pinch seal 13, can be omitted.
  • the inner power supply 19 is led directly from the base 14 (type R 7s) into the evacuated space delimited by the envelope piston 12.
  • the discharge vessel 16 made of aluminum oxide ceramic is arranged on the longitudinal axis of the envelope bulb 12, the construction for this corresponding to that of the previous exemplary embodiment and which will be explained with the description of FIGS. 4 and 5.
  • 17 designates the tubular current supply made of niobium of the discharge vessel 16, 18 the electrode made of tungsten arranged within the discharge vessel 16 and 20 represents a getter plate which maintains the vacuum in the envelope bulb 12.
  • FIGs 4 and 5 show the holder of the discharge vessel 6, 16 in detail.
  • the discharge vessel 6, 16 has a tubular body 21 made of aluminum oxide ceramic, in whose respective end a bushing 22, also made of aluminum oxide ceramic, is sintered.
  • the tubular power supply 7, 17 made of niobium is melted gas-tight into the bushing 22 by means of a suitable glass solder.
  • the power supply 7, 17 is closed on the side facing the discharge space and provided with the electrode 8, 18 (not shown in FIG. 4).
  • a molded spring part 23 is fastened within the end of the tubular power supply 7, 17 facing away from the discharge space by means of resistance welding.
  • the molded spring part 23 consists of a wound nickel wire (semi-hard), of Duratherm® (hardenable spring alloy based on cobalt-nickel-chrome) or of heat-resistant spring steel wire of approx. 0.6 mm diameter and has one of approx. Four closely wound turns existing cylindrical part 24 and an adjoining, also consisting of approximately four turns part with increasing diameter 25 in the manner of a whisk. The end 26 of the part 25 wound with increasing diameter is tangentially guided away and bent over at an angle ⁇ of 30 ° to the longitudinal axis of the spring molded part 23.
  • the getter plate 10, 20 (FIGS. 1 to 3) is attached to this end.
  • the cylindrical part 24 of the spring molded part 34 is designed so that it fills different inner diameters of the tubular power supply 7, 17. This is done by, for example, winding the cylindrical part 24 in stages.
  • the part 25 of the spring molded part 23 wound with increasing diameter makes a longitudinal expansion in the Conical shape possible, whereby the individual turns are designed so that they can overlap in the case of suspension - for example in the case of shock vibration.
  • the end 26 of the molded spring part 23 touches its own longitudinal axis, which also coincides with the longitudinal axis of the discharge vessel, and is connected there by means of a resistance weld 28 to a guide pin 27.
  • the end of the guide pin 27 facing the discharge vessel 6, 16 is arranged so as to be freely movable axially within the cylindrical part 24 of the spring-shaped part 23.
  • the inner diameter of the cylindrical part 24 is matched to the diameter of the guide pin 27.
  • the guide pin 27, the internal power supply 9, 19 and the melting point also differ from one another in accordance with the two previously described types of embodiment of the envelope bulb (quartz glass or hard glass): in the case of the high-pressure discharge lamp 1 corresponding to FIGS. 1 and 2, in which the envelope bulb 2 consists of quartz glass , The guide pin 27 made of molybdenum is welded to the inner power supply 9. This inner power supply 9 is then connected to the sealing film 5 within the pinch 3. On the other hand, in the exemplary embodiment according to FIG. 3, the guide pin consists of tungsten and at the same time forms the inner power supply 19. The guide pin is previously provided with a flashing glass on the pinch 13 of the envelope piston 12 made of tempered glass.
  • This construction enables the discharge vessel 6, 16 to be positioned exactly on the longitudinal axis of the lamp and thus to be held simultaneously at a defined position within a luminaire reflector.
  • the discharge vessel is mounted by the construction according to the invention much more vibration-free than in the fixed assembly usually used.
  • both ends of the discharge vessel are held by means of a spring molded part 23 and the guide pin 27; but positive results have also been achieved with lamps in which only one end of the discharge vessel is held in the manner proposed here.
  • heat dissipation there are also advantages over the known spring constructions. In the case of discharge vessels which have a fixed "cold spot", it is necessary that the heat dissipation from the discharge vessel to the outside is defined. It is therefore necessary that the spring molded part does not touch the envelope piston.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP88101262A 1987-02-20 1988-01-28 Hochdruckentladungslampe Expired - Lifetime EP0279249B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8702658U 1987-02-20
DE8702658U DE8702658U1 (de) 1987-02-20 1987-02-20 Hochdruckentladungslampe

Publications (3)

Publication Number Publication Date
EP0279249A2 EP0279249A2 (de) 1988-08-24
EP0279249A3 EP0279249A3 (en) 1990-08-29
EP0279249B1 true EP0279249B1 (de) 1991-09-18

Family

ID=6805009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101262A Expired - Lifetime EP0279249B1 (de) 1987-02-20 1988-01-28 Hochdruckentladungslampe

Country Status (4)

Country Link
US (1) US4837477A (ja)
EP (1) EP0279249B1 (ja)
JP (1) JPH0665024B2 (ja)
DE (2) DE8702658U1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004811U1 (de) * 1990-04-27 1990-07-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe
JPH05109388A (ja) * 1991-10-16 1993-04-30 Orc Mfg Co Ltd 液冷式放電管
DE4242123A1 (de) * 1992-12-14 1994-06-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe mit einem keramischen Entladungsgefäß
CN1194374C (zh) * 2001-09-29 2005-03-23 东莞南光电器有限公司 具有双层灯管结构的冷阴极荧光灯管
JP2012169164A (ja) 2011-02-15 2012-09-06 Koito Mfg Co Ltd 放電灯バルブ
US8350452B1 (en) 2011-02-22 2013-01-08 Sundhar Shaam P HID light bulb and base system
WO2017215185A1 (zh) * 2016-06-14 2017-12-21 普罗斯电器（中国）有限公司 一种带辅助启动开关的高par维持率型高压钠灯

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4824367U (ja) * 1971-07-24 1973-03-22

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL155398B (nl) * 1970-04-24 1977-12-15 Philips Nv Hogedruk-natriumdampontladingslamp.
GB1305065A (ja) * 1969-05-20 1973-01-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
JPS5022685U (ja) * 1973-06-20 1975-03-13
JPS55165568A (en) * 1979-06-11 1980-12-24 Toshiba Corp Metallic vapor discharge lamp
JPS57111506A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Lens system having short distance correcting function
US4401913A (en) * 1981-06-03 1983-08-30 Gte Products Corporation Discharge lamp with mount providing self centering and thermal expansion compensation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4824367U (ja) * 1971-07-24 1973-03-22

Also Published As

Publication number Publication date
JPS63216262A (ja) 1988-09-08
EP0279249A3 (en) 1990-08-29
US4837477A (en) 1989-06-06
JPH0665024B2 (ja) 1994-08-22
EP0279249A2 (de) 1988-08-24
DE8702658U1 (de) 1987-04-16
DE3864847D1 (de) 1991-10-24

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