WO2009065443A1 - Stromzuführungsvorrichtung für eine elektrode einer entladungslampe und entladungslampe, insbesondere höchstdruck-quecksilberdampf-entladungslampe - Google Patents
Stromzuführungsvorrichtung für eine elektrode einer entladungslampe und entladungslampe, insbesondere höchstdruck-quecksilberdampf-entladungslampe Download PDFInfo
- Publication number
- WO2009065443A1 WO2009065443A1 PCT/EP2007/062738 EP2007062738W WO2009065443A1 WO 2009065443 A1 WO2009065443 A1 WO 2009065443A1 EP 2007062738 W EP2007062738 W EP 2007062738W WO 2009065443 A1 WO2009065443 A1 WO 2009065443A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current
- pin
- current carrier
- power supply
- supply device
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- 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
-
- 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
- H01J61/366—Seals for leading-in conductors
Definitions
- the invention relates to a power supply device for an electrode of a discharge lamp, with a current carrier foil and a current carrier pin connected thereto, on which the electrode is arranged. Furthermore, the invention relates to a discharge lamp, in particular a high-pressure mercury vapor discharge lamp with such a power supply device.
- ultra-high pressure discharge lamps which are referred to, for example, as applicant's P-VIP lamps
- rod fusion of the power supply device in a bulb neck of the lamp bulb is not possible since this can not ensure a tightness of the discharge vessel.
- current carrying sheets are externally applied to a quartz glass cylinder and connected to power supply pins which lead out and current carrying pins which lead inwardly and carry the electrodes, and melted into the piston neck.
- rod-shaped current carrier pins are welded to a very thin current carrier foil, which also serves as a sealing film after melting, and melted.
- the slides have one Thickness between 10 microns and 30 microns and include a width between 0.5 mm to 3 mm.
- FIG. 11 shows a schematic sectional view of a known power supply device of a high-pressure discharge lamp.
- the power supply device 1 comprises the corner-free current carrier pin 2, to which an electrode, not shown, is attached.
- the power supply device 1 comprises a current carrier foil 3, which is welded to the current carrier pin 2.
- the glass material 4 After the power supply device 1 has melted into the bulb neck, the foil 3 and the pin 2 are surrounded by the glass material 4. Due to the shaping and positioning of the film 3 and the pin 2, cavities 5 and 6 form after melting, in which the glass material 4 is not present. It comes structurally in the region of the weld to these cavities 5 and 6 in the glass, which are above the electrode pin or the inner current carrying pin 2 in conjunction with the discharge vessel. Therefore, the working pressure of the discharge lamp acts in these volumes. Due to the resulting splitting effect, this can lead to film lift-off, which causes a failure of the burner or of the discharge space in the lamp envelope.
- EP 1 343 196 A2 discloses a high-pressure discharge lamp in which a current-carrying pin formed substantially over its entire length with the same diameter and without a cross-section is connected to a specifically shaped current carrier foil.
- the current carrier foil has a defined depression or depression, into which the current carrier pin in Connection area is used. The film is then virtually the entire surface of a part of the surface or the outside of the current carrier pin. Also, the generation of voids in the melting of the power supply device can be avoided only partially.
- the occurrence of cavities in the connection region between a current carrier pin and a current carrier foil of the power supply device should at least be further reduced.
- a first aspect of the invention relates to a power supply device for an electrode of a discharge lamp according to the invention, comprising a current carrier foil and a current carrier pin connected thereto, on which the electrode is arranged.
- the current carrier pin has a shape with at least one flat surface in the connection region with the current carrier foil.
- a flat surface is also understood to mean one which, owing to manufacturing tolerances, has little unevenness, which, however, can be neglected with regard to the dimensions of the surface.
- a transition between the surface of the current carrier foil and the surface of the planar surface of the current carrier pin preferably has an angle greater than 90 °.
- Such a design of the transitions can prevent the formation of virtually undercuts or narrow pockets into which the molten glass material of the lamp bulb can not penetrate.
- the angle between the surfaces preferably lies at at least one transition between greater than 90 ° and equal to 180 °.
- a plurality of transitions are formed between the surface of the current carrier foil and at least one of a plurality of planar surfaces of the current carrier pin.
- a shape configuration can thus be made possible, which facilitates the melting of this connecting region in a glass material of a lamp. piston at least with a significantly reduced cavitation, in particular without the occurrence of cavities, allows.
- the current-carrying pin preferably has a corner-free cross-section outside the connection region, at least in regions, and is formed at least in regions in the connection region with a cross-section provided with corners.
- the cross section may be at least partially polygonal in the connection region.
- a triangular, quadrangular or other configuration may be provided here.
- a circular segment-shaped geometry or a diamond-shaped geometry may be specified.
- the current carrier pin can thus be geometrically designed in the connection region in such a way that it matches the shaping and design of the current-carrying foil for the cavity-preventing fusion and, on the other hand, enables mechanically stable welding.
- the current-carrying pin has a reduced cross-section in the connection region in comparison to the part without corners in the cross-section.
- the current-carrying pin is designed in the connection region for the specific shaping with at least one flat surface by quasi a material removal in comparison to the design in the region close to the electrode.
- the current-carrying pin is quasi always thinner in the connection region than in the part of the current-carrying pin lying near the electrode and thus outside the connection region.
- the current carrier pin has at least two planar surfaces in the connection region, which are formed one behind the other in the longitudinal direction of the current carrier pin.
- the at least two planar surfaces may be formed with different inclinations or at different height levels.
- the at least two planar surfaces may be directly adjacent to one another and, for example, bounded by an edge and formed adjacent to one another. In this regard, a stepped configuration with flat surfaces can thus be formed in the connection region.
- the current-carrying pin has at least two planar surfaces in the connection region, which in the longitudinal direction of the current-carrying pin are at least partially formed on a same longitudinal section.
- the two flat surfaces thus overlap, at least in some areas, with regard to longitudinal viewing.
- a flat surface of the current carrier pin lies flat on the surface of the current carrier foil and at least one further flat surface of the current carrier pin is arranged at a transition to the surface of the current carrier foil at an angle greater than 90 ° to this surface.
- a particularly suitable connection to the current carrier pin can be ensured, in particular in the case of a substantially planar surface of the current carrier foil.
- the current carrier foil can be formed essentially completely flat in the connection region. Under a completely flat training is also such understood that due to manufacturing tolerances has slight bumps, which, however, can be neglected in view of the overall dimensions of the area. It can also be provided that the current-carrying foil thus has a slight curvature over its entire width, but in this respect does not comprise a defined trench or a defined depression or a defined receptacle for other parts, in particular a part of the current-carrying pin.
- the current carrier foil comprises a defined recess for at least partially receiving the current carrier pin.
- different geometries of the recess may be provided, which may be arcuate in cross-section or also U-shaped or V-shaped. These are merely exemplary embodiments of such geometries of depressions, which are in no way conclusive.
- connection to the current-carrying pin can be mechanically made even more stable and, moreover, the occurrence of cavities in the glass material of the lamp bulb can be reduced even further by the specified adaptation of the shaping of the current-carrying pin.
- At least one flat surface of the current carrier pin is flush with a surface region of the current carrier adjacent to the depression. arranged gerfol.
- Under a flush attachment is understood in particular a stepless transition.
- the occurrence of cavities can be prevented in a particularly effective manner, since in principle no spaces or indentations are formed at a transition between the surface of the current carrier pin and the surface of the current carrier foil.
- a coherent surface is virtually created on which the molten glass material can rest without cavities.
- This flush and in particular stepless transition can also be realized between curved surfaces of the current carrier pin and the current carrier foil.
- a further aspect of the invention relates to a further current supply device for an electrode with a discharge lamp, which device has a current carrier foil and a current carrier pin connected thereto, on which the electrode is arranged.
- the current-carrying pin is formed with a shape in the connection region with the current-carrying foil, so that a stepless transient is made possible for adjoining surfaces of the current-carrying pin in the connection region of the current-carrying foil.
- the adjoining and the stepless transition ensuring surfaces of the current carrier foil and the current carrier pin in the connection region can also be curved.
- Advantageous embodiments of the first aspect of the power supply device are advantageous as Ausges- tions of the power supply device according to the second aspect of the invention.
- the invention relates to a discharge lamp, in particular a high-pressure mercury vapor discharge lamp, which has a power supply device according to the invention or an advantageous embodiment thereof according to the first or the second aspect of the invention.
- advantageous embodiments of the power supply devices are to be regarded as advantageous embodiments of the discharge lamp.
- Fig. 1 is a schematic sectional view through an embodiment of a discharge lamp according to the invention
- FIG. 2 is a perspective view of a first embodiment of a power supply device according to the invention.
- Fig. 3 is a perspective view of a second embodiment of a power supply device of the invention.
- FIG. 4 is a sectional view of the power supply device according to FIG. 3;
- Fig. 5 is a perspective view of a third embodiment of a power supply device of the invention, •
- FIG. 6 is a sectional view of the power supply device according to FIG. 5; FIG.
- Fig. 7 is a sectional view of a modification of the power supply apparatus of Fig. 5;
- FIG. 8 is a perspective view of a fourth embodiment of a power supply device according to the invention.
- FIG. 9 is a sectional view of the power supply device of FIG. 8; FIG.
- Fig. 10 is a sectional view of an alternative modification of the power supply device of Fig. 8.
- FIG. 11 is a schematic sectional view of a power supply device which is known from the prior art.
- a discharge lamp I is shown in a schematic sectional view, which is designed as a high-pressure mercury vapor discharge lamp.
- the discharge lamp I can be used in particular for projection systems for image projection.
- the discharge lamp I can be designed for operation with direct current or alternating current.
- the discharge lamp I comprises a lamp bulb 7, which rather has a bulbous middle part 8. On both sides of the
- Middle part 8 each extends a piston neck 9 and 10, which are arranged diametrically opposite one another.
- the lamp bulb 7 is formed of quartz glass.
- a discharge space or combustion chamber 11 is formed, in which one is the first
- Electrode formed cathode 12 and formed as a second E- electrode anode 13 extend into it.
- a first power supply device 14 has melted in a gastight manner at least in some areas.
- the first power supply device 14 serves to supply power to the cathode 12 and comprises an outer current carrier pin 15 which extends out of the piston neck 9 and is connected to a current carrier foil 16, in particular welded.
- the first current supply device 14 further comprises an inner current carrier pin 17, which carries the cathode 12 and is also connected to the current carrier foil 16, in particular welded.
- a connection of said components is provided at the connection portion 23.
- a second power supply device 18 is at least partially sealed gas-tight.
- the second power supply device 18 includes an outer power carrier pin 19 which extends outwardly from the piston neck 10.
- the external current Carrier pin 19 is connected to a current carrier foil 20, in particular welded.
- the second power supply device 18 comprises an inner current carrier pin 21, which carries the anode 13 and on the other hand is connected to the current carrier foil 20.
- a connection is formed at the connection portion 22. The connection is possibly realized by a weld.
- the two current carrier foils 16 and 20 are also relevant to the tightness of the meltdown and are therefore also commonly referred to as sealing foils.
- a first embodiment of a power supply device 18 is shown in a perspective view.
- the explanation of the following exemplary embodiments is made on the basis of the power supply device 18, but is preferably also analogously formed in the first power supply device 14.
- the inner current carrying pin 21 has a specific shape which is outside the connection area
- connection region 22 in the exemplary embodiment has a corner-free cross-section and, for example, may be cylindrical.
- Current carrier pin 21 a specific shape, which is at least designed with a flat surface.
- that part of the inner current-carrying pin 21 which is arranged in the connection region 22 has a triangular cross-section.
- this part of the current carrier pin 21 has planar surfaces 27, 28 and 29, all of which are directly adjacent to one another and are formed in the longitudinal direction A of the current carrier pin 21 quasi side by side or at the same length level.
- the end of the current-carrying pin 21 facing away from the anode 13 also has a flat triangular surface 30.
- the current carrier foil 20 is essentially planar and the planar surface 29 lies virtually flat on the surface 25 of the current carrier foil 20.
- planar surfaces 27 and 28 are arranged and inclined so that an angle a (not shown) between the surface 25 and the surface 28 at the junction is greater than 90 °. Accordingly, the plane 27 is oriented so that an angle ⁇ (not shown) between the surface 25 of the current-carrying foil 20 and this surface 27 at the transition is also greater than 90 °.
- connection region 22 is formed thinner than at the anode near section.
- the shaping in the connection region 22 is thus realized, as it were, by material removal.
- transition 31 transition between the surface 25 and the surface 28
- transition 32 transition between the surface 27 and the surface 25
- FIG. 3 shows a perspective illustration of a further exemplary embodiment of the power supply device 18 or subcomponents thereof.
- the current carrier foil 20 has a defined recess 24, which extends in the longitudinal direction of the axis A.
- this recess 24 of the current-carrying pin 21 is partially absorbed or embedded.
- the recess 24 has a V-shape in cross-section. The recess 24 is bounded by the planar surfaces 25 and 26 of the current carrier foil 20.
- the current-carrying pin 21 again has a specific shape at its end facing away from the anode 13 and thus at the portion arranged in the connection region 22, which comprises at least one flat surface extending in the longitudinal direction A of the current-carrying pin 25.
- a plurality of such flat surfaces 27, 28 and 29 realized.
- the current-carrying pin 21 is triangular in cross-section in the connection region 22.
- this Section of the current carrier pin 21 is arranged in the recess 24.
- the shaping of this part of the current-carrying pin 21 arranged in the connection region 22 is dimensioned such that the flat surface 28 is arranged flush and thus steplessly with the surfaces 25 and 26 of the current-carrying foil 20.
- the angle a ( Figure 4) and also the angle ⁇ at the transitions between the surface 28 and the surfaces 25 and 26 are substantially 180 °.
- the current-carrying pin 21 also has two further planar surfaces 30a and 30b, which, viewed in the longitudinal direction A, adjoin the flat surface 28 on both sides and on the one hand are formed inclined downwards on the one hand.
- end-side planar surface 30a is inclined so that the edges 30c bear against the inside of the recess 24 and also in this regard, the transitions between the surfaces of the recess 24 and the surface 30a are formed at an angle greater than 90 °.
- the power supply device 18 is shown in a schematic sectional view along the section line BB.
- the cross-sectionally triangular configuration of the current-carrying pin 21 in the connection region 22 is shown.
- the flush transition between the flat surface 28 and the surface regions 25 and 26 is shown. At the transitions 31 and 32, angles a and ⁇ are thus realized at substantially 180 °.
- a further embodiment of a power supply device 18 according to the invention is shown in a perspective view.
- a depression 24 in the current carrier foil 20 is realized in this respect, which has a corner-free curvature in cross-section.
- the shape of the current carrier pin 21 is designed so that the current carrier pin 21 can be quasi precisely embedded in this recess 24.
- these two flat surfaces 27 and 28 are also arranged behind one another in the longitudinal direction of the axis A and are designed directly adjacent to one another.
- the flat surface 27 is formed inclined with respect to the flat surface 28 downwards.
- the edges are arranged so that between the flat surface 27th and the surface of the recess 24 angles greater than 90 ° are realized.
- FIG. 6 shows the current supply device 18 according to FIG. 5 in the schematic sectional representation along the section line CC.
- the realized in cross-section in a circular area segment shaping of the current carrier pin 21 in the connection region 22 is shown.
- a flush and thus continuous transition between the flat surface 28 and the surface regions 25 and 26 of the current carrier foil 20 is again shown in the embodiment of FIG.
- angles ⁇ and ⁇ are thus realized with essentially 180 °.
- FIG. 7 shows a schematic sectional view of a further exemplary embodiment which represents an alternative to the embodiments according to FIGS. 5 and 6.
- the surface areas 25 and 26 of the current carrier foil are not completely arranged in a plane, but slightly curved.
- the surface 28 is correspondingly curved.
- the curvature is designed such that at the transitions 33 and 34 angles ⁇ and ⁇ are realized with substantially 180 °.
- an embodiment may be provided in which, for example, the surface 28 is just designed and thus realized according to the illustration in Fig. 6.
- provision may also be made for the subregion of the current-carrying pin 21 embedded in the recess 24 to be arranged quasi sunk.
- the angles ⁇ and ⁇ are greater than 180 °.
- FIG. 8 shows a perspective illustration of a further exemplary embodiment of the power supply device 18.
- the depression is realized in a V-shaped cross section, but rises beyond the level of the surface regions 25 and 26 on the edge side.
- the current-carrying pin 21 is formed on its end facing away from the anode 13, again with a specific shape design, which is different from the anode 13 facing portion.
- the current-carrying pin 21 is polygonal in cross-section, in particular quadrangular and, in a specific embodiment, rhomboid-shaped.
- this portion of the current-carrying pin 21 has four flat surfaces, of which the surfaces 35 and 36 are further identified, all of which extend in the longitudinal direction of the axis A.
- the current-carrying pin 21 On the rear side and thus on the end facing away from the anode 13, the current-carrying pin 21 likewise has a further planar surface 30. This is preferably arranged so that it according to the embodiments of FIG. 3 and FIG.
- the current-carrying pin 21 in the section which is arranged in the connection region 22 is formed with a smaller cross-section than in the cylindrical section which is close to the anode.
- FIG. 9 shows a schematic sectional view along the section line DD of the power supply device 18 according to FIG. 8. Again, it can be seen that at the transitions between the surface regions 25 and 26 and the flat surfaces 35 and 36 angles a and ß are formed substantially at 180 °. Here, too, a flush and stepless transition is realized.
- Fig. 10 is a schematic sectional view of a modification of the embodiment of FIG. 8 is shown.
- the arranged in the connection region 22 part of the current carrier pin 21 is smaller realized than in the embodiment of FIG. 9. Therefore, an at least partially recessed and embedded design is designed so that the current-carrying pin 21 is moved virtually down. Nevertheless, an angle ⁇ or ⁇ is also formed between the inside of the recess 24 and the flat surfaces 35 and 36, which is greater than 90 °.
- An embodiment may also be provided in which the part of the current-carrying pin 21 arranged in the connection region 22 does not exceed the height level in the z-direction the upper tips, which form the upper edges of the recess 24, protrude.
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Planar Illumination Modules (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200780101672.XA CN101874284B (zh) | 2007-11-23 | 2007-11-23 | 用于放电灯的电极的供电装置以及放电灯,尤其是最高压-汞蒸气-放电灯 |
DE112007003681T DE112007003681A5 (de) | 2007-11-23 | 2007-11-23 | Stromzuführungsvorrichtung für eine Elektrode einer Entladungslampe und Entladungslampe, insbesondere Höchstdruck-Quecksilberdampf-Entladungslampe |
PCT/EP2007/062738 WO2009065443A1 (de) | 2007-11-23 | 2007-11-23 | Stromzuführungsvorrichtung für eine elektrode einer entladungslampe und entladungslampe, insbesondere höchstdruck-quecksilberdampf-entladungslampe |
TW097145024A TW200931480A (en) | 2007-11-23 | 2008-11-21 | Current feed device for an electrode of a glow lamp and glow lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2007/062738 WO2009065443A1 (de) | 2007-11-23 | 2007-11-23 | Stromzuführungsvorrichtung für eine elektrode einer entladungslampe und entladungslampe, insbesondere höchstdruck-quecksilberdampf-entladungslampe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009065443A1 true WO2009065443A1 (de) | 2009-05-28 |
Family
ID=39627638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/062738 WO2009065443A1 (de) | 2007-11-23 | 2007-11-23 | Stromzuführungsvorrichtung für eine elektrode einer entladungslampe und entladungslampe, insbesondere höchstdruck-quecksilberdampf-entladungslampe |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN101874284B (de) |
DE (1) | DE112007003681A5 (de) |
TW (1) | TW200931480A (de) |
WO (1) | WO2009065443A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959587A (en) * | 1989-01-13 | 1990-09-25 | Venture Lighting International, Inc. | Arc tube assembly |
JPH10247476A (ja) * | 1997-02-28 | 1998-09-14 | Toshiba Lighting & Technol Corp | 管球、光源装置、投光装置ならびにプロジェクタ装置 |
JPH1116539A (ja) * | 1997-06-24 | 1999-01-22 | Seiko Epson Corp | 光源ランプおよび光源ランプユニット |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3570414B2 (ja) * | 2002-03-05 | 2004-09-29 | ウシオ電機株式会社 | ショートアーク型超高圧放電ランプ |
JP2004265753A (ja) * | 2003-03-03 | 2004-09-24 | Ushio Inc | ショートアーク型超高圧放電ランプ |
-
2007
- 2007-11-23 DE DE112007003681T patent/DE112007003681A5/de not_active Withdrawn
- 2007-11-23 WO PCT/EP2007/062738 patent/WO2009065443A1/de active Application Filing
- 2007-11-23 CN CN200780101672.XA patent/CN101874284B/zh not_active Expired - Fee Related
-
2008
- 2008-11-21 TW TW097145024A patent/TW200931480A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959587A (en) * | 1989-01-13 | 1990-09-25 | Venture Lighting International, Inc. | Arc tube assembly |
JPH10247476A (ja) * | 1997-02-28 | 1998-09-14 | Toshiba Lighting & Technol Corp | 管球、光源装置、投光装置ならびにプロジェクタ装置 |
JPH1116539A (ja) * | 1997-06-24 | 1999-01-22 | Seiko Epson Corp | 光源ランプおよび光源ランプユニット |
Also Published As
Publication number | Publication date |
---|---|
TW200931480A (en) | 2009-07-16 |
DE112007003681A5 (de) | 2010-10-07 |
CN101874284A (zh) | 2010-10-27 |
CN101874284B (zh) | 2013-07-31 |
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