EP0476461B1 - Einseitig gesockelte Hochdruck-Entladungslampe - Google Patents

Einseitig gesockelte Hochdruck-Entladungslampe Download PDF

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Publication number
EP0476461B1
EP0476461B1 EP91115114A EP91115114A EP0476461B1 EP 0476461 B1 EP0476461 B1 EP 0476461B1 EP 91115114 A EP91115114 A EP 91115114A EP 91115114 A EP91115114 A EP 91115114A EP 0476461 B1 EP0476461 B1 EP 0476461B1
Authority
EP
European Patent Office
Prior art keywords
frame bracket
cap
pressure discharge
discharge lamp
bracket section
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
EP91115114A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0476461A1 (de
Inventor
Wolfgang Greiler
Andreas Dr. Genz
Bernd Lewandowski
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 EP0476461A1 publication Critical patent/EP0476461A1/de
Application granted granted Critical
Publication of EP0476461B1 publication Critical patent/EP0476461B1/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
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors

Definitions

  • the invention relates to a high-pressure discharge lamp with a base on one side, according to the preamble of protective claim 1.
  • Such single-ended high-pressure discharge lamps are metal halide discharge lamps with powers of approx. 500-2,500 watts and relatively high color temperatures, as are desired with light sources for film and television recordings.
  • These lamps require a frame that ensures a stable mounting of the discharge vessel in the outer bulb, so that a change in the axial position of the discharge vessel, e.g. caused by vibrations, is prevented.
  • the problem of the different thermal expansion of the different lamp parts must be taken into account.
  • High-pressure discharge lamps with a base on one side and a power consumption of approx. 500 - 2500 watts are available. These have a frame bracket with a crossbar running perpendicular to the lamp axis, which is welded to the power supply remote from the base, whereby the power supply remote from the base extends and extends beyond this welding point is fixed in the pump stem or a bulge of the outer bulb.
  • the high-pressure discharge lamps with higher power consumption (1200 - 2500 watts) have retaining rings or clamps, which are welded to the power supply remote from the base and the crossbeam and are clamped against the outer bulb wall.
  • the object of the invention is to provide a low-cost frame structure for high-pressure discharge lamps with a base on one side, which ensures exact centering and a vibration-proof mounting of the discharge vessel in the outer bulb.
  • the one-piece design of the frame bracket simplifies the frame structure.
  • the two bevels which are formed directly on the crossbar of the frame bracket, a spring and clamping effect is achieved against the outer bulb wall.
  • fluctuations in the inside diameter of the outer bulb or in the dimensions of the frame bracket of approx. 5% can be compensated for, and on the other hand damage caused by impact loads, such as occur during transport, can be avoided.
  • the arrangement of the crossbar, the bevels and the frame sections with the four contact points, which are symmetrical with respect to the longitudinal axis, has a particularly advantageous effect because the thermal expansion of the frame maintains the axial orientation of the discharge vessel.
  • the four points of contact of the frame bracket sections running perpendicular to the longitudinal axis and to the crossbeam not only enable an exact axial alignment of the discharge vessel, but also improve heat dissipation.
  • the frame bracket is rounded in the area of the four contact points.
  • the flattening in the area of the first frame bracket section and the third slope increases the elasticity of the frame.
  • FIG. 1 shows a high-pressure discharge lamp with a base on one side, in particular a 575 watt metal halide discharge lamp, with a frame structure according to the invention.
  • the outer bulb 1 has a longitudinal axis 2 and sticks with its pinch 3 in the lamp base 4.
  • a discharge vessel 5 made of quartz glass is arranged axially symmetrically, which is held by a frame bracket 6 and by a support wire 7.
  • the frame bracket 6 and the support wire 7 together form the frame of the lamp.
  • the discharge vessel 5 has a base-side 8 and a base-remote 9 end from which a base-side 10 and a base-remote 11 power supply protrude. Both power supply lines 10, 11 are electrically conductively connected to a contact pin 13 via the support wire 7 or the frame bracket 6 and via a molybdenum foil 12 which is melted into the pinch 3.
  • the frame bracket 6 has in the area of the base-side end 8 of the discharge vessel 5 a glass envelope 14 which is melted into the pinch 3 and serves to increase the dielectric strength.
  • FIG. 2 to 5 Details of the frame bracket 6 are shown in Figures 2 to 5. It has a crossbar 15 running perpendicular to the longitudinal axis 2, which is welded to the power supply 11 remote from the base. The length of this crossbar 15 is considerably smaller than the inside diameter of the outer bulb 1. At the ends of the crossbar 15 arranged symmetrically with respect to the longitudinal axis 2, there are two bevels 16, 17, each with a straight line, orthogonal to the longitudinal axis 2 and Transverse bars 15 oriented frame bracket sections 20, 21 are clamped against the outer bulb wall at two contact points 18, 22, 19, 23.
  • the frame bracket section 20 is connected via a rounded knee 22 and a third slope 25 to the section 26 of the frame bracket 6 running parallel to the longitudinal axis 2.
  • the frame bracket is flattened in the area of the first frame bracket section 20 and the third slope 25 (FIG. 3).
  • the crossbeam 15, the first 16 and the second 17 slope and the first 20 and the second 21 frame bracket section are arranged in this first embodiment mirror-symmetrically to the plane which is aligned orthogonally to the crossbar 15 and contains the longitudinal axis 2 ( Figure 5).
  • the inner diameter of the outer bulb 1 is approximately 24 mm and the crossbar 15 has a length of approximately 16 mm.
  • the first 16 and the second 17 bevel are approximately 12 mm long and the two frame bracket sections 20, 21 have a length of approximately 11 mm.
  • a frame bracket 6 according to a second embodiment is shown in plan view.
  • the bevels 16 ', 17' and the frame bracket sections 20 ', 21' are not arranged mirror-symmetrically with respect to one plane, but they have an inversion symmetry with respect to an axis parallel to the longitudinal axis 2.
  • the views of the second exemplary embodiment corresponding to FIGS. 1 to 3 would not make any difference to the first exemplary embodiment, i.e. FIGS. 1 to 3 describe both the structure of the first and of the second exemplary embodiment.
  • the use of the frame structure described is not limited to the 575 watt high-pressure discharge lamp of the two disclosed exemplary embodiments.
  • the shape of the outer bulb can differ from the circular cylindrical shape.
  • the outer bulb can have an area with an enlarged diameter. This expanded area serves to accommodate the approximately spherical part of the discharge vessel.
  • the frame bracket adapts approximately in the expanded area to the contour of the outer bulb.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP91115114A 1990-09-19 1991-09-06 Einseitig gesockelte Hochdruck-Entladungslampe Expired - Lifetime EP0476461B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9013279U DE9013279U1 (de) 1990-09-19 1990-09-19 Einseitig gesockelte Hochdruck-Entladungslampe
DE9013279U 1990-09-19

Publications (2)

Publication Number Publication Date
EP0476461A1 EP0476461A1 (de) 1992-03-25
EP0476461B1 true EP0476461B1 (de) 1995-04-19

Family

ID=6857660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115114A Expired - Lifetime EP0476461B1 (de) 1990-09-19 1991-09-06 Einseitig gesockelte Hochdruck-Entladungslampe

Country Status (4)

Country Link
US (1) US5164630A (enrdf_load_stackoverflow)
EP (1) EP0476461B1 (enrdf_load_stackoverflow)
JP (1) JP2549419Y2 (enrdf_load_stackoverflow)
DE (2) DE9013279U1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6459192B1 (en) 1999-07-27 2002-10-01 Koninklijke Philips Electronics N.V. Electric lamp

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2511393B2 (ja) * 1992-09-15 1996-06-26 パテント−トロイハント−ゲゼルシヤフト フユア エレクトリツシエ グリユーランペン ミツト ベシユレンクテル ハフツング メタルハライドランプ
ES2164977T3 (es) * 1997-01-31 2002-03-01 Heraeus Noblelight Gmbh Radiador optico.
DE19916877A1 (de) * 1999-04-14 2000-10-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe mit Sockel
JP3657461B2 (ja) * 1999-06-15 2005-06-08 株式会社小糸製作所 放電バルブ
JPWO2005088674A1 (ja) * 2004-03-12 2008-01-31 松下電器産業株式会社 金属蒸気放電ランプとその製造方法、およびリフレクタ付きランプ
DE102006014294A1 (de) * 2006-03-28 2007-10-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Lampe
US8896205B1 (en) * 2013-10-18 2014-11-25 Amc Automation Co., Ltd. Quartz light
CN103646846B (zh) * 2013-12-10 2016-08-17 宁波亚茂光电股份有限公司 紧凑型高压钠灯的支架结构

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA508525A (en) * 1954-12-28 Canadian General Electric Company High pressure discharge lamp
NL7011321A (enrdf_load_stackoverflow) * 1970-07-31 1972-02-02
US3882346A (en) * 1973-11-05 1975-05-06 Gen Electric Ceramic arc tube mounting structure
US3992642A (en) * 1975-12-15 1976-11-16 Mcvey Charles I Ceramic envelope plug and lead wire and seal
NL7705365A (nl) * 1977-05-16 1978-11-20 Philips Nv Elektrische lamp.
NL183794B (nl) * 1979-02-26 Philips Nv Hogedrukkwikontladingslamp.
EP0085487B1 (en) * 1982-01-29 1988-11-09 THORN EMI plc Improvements in discharge lamps
DE3416714A1 (de) * 1984-05-05 1985-11-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Hochdruckentladungslampe
US4734612A (en) * 1985-07-15 1988-03-29 Kabushiki Kaisha Toshiba High pressure metal vapor discharge lamp
US4689518A (en) * 1985-12-19 1987-08-25 North American Philips Corporation High pressure discharge lamp mounting structure
US4866328A (en) * 1988-04-15 1989-09-12 North American Philips Corp. Electric lamp with reduced internal photoelectron production
US4994707A (en) * 1988-09-22 1991-02-19 Patent-Treuhand Gesellschaft fur elektrische Glum.b.H. Vibration-resistant single-ended halogen incandescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6459192B1 (en) 1999-07-27 2002-10-01 Koninklijke Philips Electronics N.V. Electric lamp

Also Published As

Publication number Publication date
JP2549419Y2 (ja) 1997-09-30
JPH0499661U (enrdf_load_stackoverflow) 1992-08-28
DE9013279U1 (de) 1990-11-22
EP0476461A1 (de) 1992-03-25
US5164630A (en) 1992-11-17
DE59105239D1 (de) 1995-05-24

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