EP1684005A1 - Lampe à décharge à haute pression à culot unique - Google Patents

Lampe à décharge à haute pression à culot unique Download PDF

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Publication number
EP1684005A1
EP1684005A1 EP05025755A EP05025755A EP1684005A1 EP 1684005 A1 EP1684005 A1 EP 1684005A1 EP 05025755 A EP05025755 A EP 05025755A EP 05025755 A EP05025755 A EP 05025755A EP 1684005 A1 EP1684005 A1 EP 1684005A1
Authority
EP
European Patent Office
Prior art keywords
reflector
zone
lamp
lamp according
inner vessel
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Withdrawn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
EP05025755A
Other languages
German (de)
English (en)
Inventor
Joachim Arndt
Uwe Fiedler
Markus Herb
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 EP1684005A1 publication Critical patent/EP1684005A1/fr
Withdrawn legal-status Critical Current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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • the invention relates to a single-ended high-pressure discharge lamp according to the preamble of claim 1.
  • high-pressure discharge lamps preferably metal halide lamps, but also, for example, halogen incandescent lamps.
  • an elongated, in particular ceramic, discharge vessel is used as lamp bulb.
  • EP-A 1 109 199 describes a single-ended high-pressure lamp, in which the outer bulb is surrounded by a reflector. The reflector contour is not further subdivided.
  • the quadrants are always assigned crosswise in a conventional reflector. In the case of a horizontal burning position, this means that light from the lower half, as defined by the second quadrant, in the imaging plane irradiates the opposite half, by definition the fourth quadrant. Conversely, light from the upper half (first quadrant) of the lamp is assigned in the lower half plane of projection, alo the third quadrant.
  • this unique assignment causes a high color spread in lamps that have a condensate as a filling.
  • the area containing the condensate so usually always the lower quadrant in the horizontal burning position, receives its radiation only on the detour through the condensate, which turns the radiation yellowish and thus creates a stain with lower color temperature.
  • the reflector is now contoured such that both zones receive approximately half of the light of each quadrant.
  • it should be at least 35% instead of the optimal 50%.
  • the first zone is calculated to send the light into the quadrant, which is directly above it, without the lamp axis to cut.
  • Only the second zone is calculated so that its assigned light intersects the lamp axis in the usual way and falls in the other quadrants of the projection plane. In this way an averaging is achieved.
  • Each half of the radiation in one quadrant of the projection plane originates from the underlying quadrant of the emission side, the other half from the opposite quadrant of the emission side. This balancing effect had previously been laboriously and imperfectly achieved by a suitably structured cover.
  • the single-ended lamp has a vacuum-sealed inner vessel, in particular an elongate discharge vessel made of ceramic or quartz glass, which u.U. is still housed in an outer bulb. It does not matter if the discharge vessel is cylindrical or rounded.
  • the inner vessel is still surrounded by a reflector.
  • the inner vessel is a structural unit discharge vessel with outer bulb.
  • This is particularly preferably a ceramic discharge vessel, in particular a metal halide lamp for general lighting purposes.
  • a base with electrical connections on the one hand carries the inner vessel and on the other hand, the reflector part.
  • the electrical connections are normally connected to power supply lines which make electrical contact with a light source inside the inner vessel, which are realized, for example, by electrodes in the interior.
  • external electrodes may also be used, or an electrodeless configuration.
  • a discharge vessel made of quartz glass or hard glass can also be used.
  • An outer bulb as part of the inner vessel is not essential, but often desirable.
  • the base has, in addition to the base stone on a conventional, the socket facing part, for example, a screw base approach or bayonet socket approach or GU socket.
  • the inner vessel so for example, the lamp envelope or the outer bulb, which contains a discharge vessel, or the discharge vessel in the case the absence of an outer bulb, held in the central opening by means of a spring clip, as known per se.
  • the base also has a barrel-facing part, which is at least partially connected as known per se by crimping with the base brick.
  • This part contains, for example, a conventional screw thread or pin of a bayonet socket etc.
  • a typical application is a metal halide lamp containing a filling with or without mercury content, possibly with inert starting gas, preferably noble gas.
  • FIG. 1 shows a reflector lamp 1 with a reflector part 2 made of aluminum.
  • a pedestal 3 of the lamp has inside a raised collar 4, which is cylindrically shaped and partially surrounds an outer bulb 5, but ends below the discharge volume 6 of the discharge vessel 7.
  • the neck 9 of the reflector is first pushed over the collar 4. Then an attachment by crimping, ie pressing the neck 9 in holes on the collar 4 (not shown) is realized, so that dents result. Sufficient are three distributed over the circumference caused by crimping dents. Instead of through holes also superficial recesses are sufficient.
  • FIG 1 is a metal halide lamp for general lighting, the filling halides of Na, Sn, Ca, Tm. Tl and similar. may contain.
  • the ceramic inner discharge vessel 7, which is closed on two sides, is arranged longitudinally in the lamp axis A. It is closely surrounded by the outer bulb 5, which is squeezed on one side and made of tempered glass.
  • a frame 14 with short and long supply line (only partially shown) holds the discharge vessel 7 in the outer bulb 5.
  • the electrodes 17 in the interior of the discharge vessel are connected via feedthroughs 18 to the supply lines. The latter are in the region of a pinch, which closes the outer bulb 5, connected to external power supply lines.
  • the pinch of the outer bulb is seated in a matching opening of the base 3 of ceramic and is held there by a metal clip, as known per se.
  • the base is essentially formed from the base block 3 and a screw base part 10.
  • a reflector 2 is externally attached to the outer bulb 5. It is articulated in a section with contour 35, at one end of a neck portion 9 is seated, on which the base is fixed, and at the other end of the reflector opening 36 is seated, which is closed with a simple cover 37.
  • Figure 2 shows the reflector 2 in magnification.
  • the contour 35 is divided into two zonal layers 38, 39, which are both shaped as free-form surfaces, which are rotationally symmetrical are.
  • the first on the neck 9 attaching zone 38 is flat and has a mean angle to the lamp axis of about 70 °, taking the average value between the beginning and end of the first zone.
  • the second outer zone 39 is steep and has a mean angle to the lamp axis, which is significantly lower by at least 20 °, preferably 30 °, less.
  • Their mean angle to the lamp axis A is about 35 °, taking the mean value between the start and end point of the second zone.
  • the second zone 39 terminates at an enclosure 40 which later holds the cover by being bent inwardly.
  • the operation of an earlier reflector is shown by way of example in FIG.
  • the local reflector lamp 45 is shown in vertical section at horizontal focal position.
  • a condensate 46 of the charge deposits on the bottom 47 of the discharge vessel 48.
  • the lamp is divided by the lamp axis A into two symmetrical halves.
  • the upper half is the first quadrant AI, the lower half as the second quadrant AIIe justify. Radiation escapes downwardly from the discharge vessel 48 from the center of the discharge vessel where the discharge arc is located. It is emitted by definition into the second quadrant AII.
  • the first half of the lamp is defined as in the first quadrant AI First and second quadrant form the emission side, see Figure 4. It ends at the cover 49.
  • Behind the cover screen begins the projection side, in which essentially only the far field interested, such as a at a certain distance vertically arranged projection plane 50.
  • the other two quadrants AIII and AIV are the other two quadrants AIII and AIV.
  • the third quadrant AIII is spanned between the lower half of the cover plate 49 and the projection plane 50
  • the fourth quadrant AIV is above it, that is spanned between the upper half of the cover plate 49 and the projection plane 50.
  • the principle of the quadrant is shown in FIG. 4.
  • FIG. 3 shows the relationship between emission side and projection side in the prior art.
  • Quadrant AI light (not shown) is reflected in quadrant AIII, while correspondingly light from quadrant AII, where condensate 46 modifies the radiation, is reflected in quadrant AIV.
  • two light beams 31, 32 are shown.
  • Light which exits the discharge vessel through the condensate 46 in quadrant AII is irradiated in the plan view of FIG. 5 through the reflector segment a 11 into the emission segment a lV in the projection plane, whereby an average color temperature of 3000 K (integrally measured with the Ulbrichtkugel) a radiation segment on the projection plane is created, which has a color temperature of about 2800 K, for example.
  • a radiation segment is generated in the lower projection plane, which has about 3200K color temperature, because it comes from the quadrant I without interference from the condensate 46 ,.
  • the color temperature has large local differences caused by condensate and also by fringing.
  • the resulting color effects are usually reduced by a brought into the beam path, structured cover plate 49.
  • FIG. 8 shows the scattering of the color temperature of a lamp with a conventional simple reflector
  • FIG. 9 the greatly reduced scattering when using a new reflector 2 composed of two zonal layers 38, 39 according to FIG. 2.
  • the two zonal layers 38, 39 of the reflector cause a reflector segment b II (FIG. 10) to form a radiation segment due to its contribution to the flat reflector zone 38 b III and by its contribution to the steep reflector zone 39 generates a radiation segment b IV in the projection plane (shown by dashed lines).
  • These two emission segments b III and b IV generated on the emission side by the reflector segment b II , have, for example, a color temperature of 2800 K at an average color temperature of 3000 K and are produced with two practically identically located emission segments, but now generated by the reflector segment b I with a color temperature of eg 3200 K, superimposed.
  • FIG. 11 shows the superimposition of the emitted beams according to the invention through the reflector 2 in FIG. 11 b in comparison with a beam path of a conventional reflector 49 in FIG. 11 a, in which virtually no superposition takes place as described in FIG.
  • the variation of the color temperature in the projection plane can be considerably reduced, in particular by at least 50%.
  • a transition zone can also be inserted which avoids a sharp bend between the two zones 38 and 39.
  • an adjustment zone can also be provided between the first zonal layer 38 and the neck 9 and / or an adaptation zone between the second zonal layer and the edge of the reflector opening.
  • the contour of the reflector may be faceted in one or more of the zonal layers, as known per se, to further enhance uniformity.
  • the edge of the reflector may preferably be flanged (40) in the vicinity of the opening, so that it directly supports the cover plate 37.
  • a separate holding mechanism (ring) can be omitted. This is possible in particular when using an aluminum reflector with a small wall thickness.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP05025755A 2004-12-06 2005-11-25 Lampe à décharge à haute pression à culot unique Withdrawn EP1684005A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004058750A DE102004058750A1 (de) 2004-12-06 2004-12-06 Einseitig gesockelte Hochdruckentladungslampe

Publications (1)

Publication Number Publication Date
EP1684005A1 true EP1684005A1 (fr) 2006-07-26

Family

ID=36273407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05025755A Withdrawn EP1684005A1 (fr) 2004-12-06 2005-11-25 Lampe à décharge à haute pression à culot unique

Country Status (6)

Country Link
US (1) US7180229B2 (fr)
EP (1) EP1684005A1 (fr)
JP (1) JP4787610B2 (fr)
CN (1) CN1800706B (fr)
CA (1) CA2529114A1 (fr)
DE (1) DE102004058750A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4547331B2 (ja) * 2005-12-28 2010-09-22 パナソニック株式会社 照明装置及び金属蒸気放電ランプ
DE102008029743A1 (de) * 2008-06-25 2009-12-31 Manfred Grimm Verfahren zur Herstellung eines Downlight-Reflektors
WO2010015988A1 (fr) * 2008-08-06 2010-02-11 Koninklijke Philips Electronics N.V. Lampe à halogénure métallique
DE102009047339A1 (de) 2009-12-01 2011-06-09 Osram Gesellschaft mit beschränkter Haftung Hochdruckentladungslampe
US9462636B2 (en) * 2013-12-31 2016-10-04 Applied Materials, Inc. RTP lamp base with removal features
CN106195655A (zh) * 2016-07-13 2016-12-07 佛山电器照明股份有限公司 一种led par灯

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282100A1 (fr) 1987-03-11 1988-09-14 EASTMAN KODAK COMPANY (a New Jersey corporation) Projecteur pour véhicule et procédé de fabrication d'un système optiquement actif pour ce projecteur
DE3808086A1 (de) 1988-03-11 1989-09-28 Hella Kg Hueck & Co Reflektor fuer abgeblendete oder abblendbare kraftfahrzeugscheinwerfer
US5725298A (en) * 1996-02-23 1998-03-10 Hella Kg Hueck & Co. Vehicular headlight providing high-beam and depressed-beam illumination, and light source therefor
EP0881425A2 (fr) * 1997-05-26 1998-12-02 Christian Bartenbach Lampe
EP0917180A1 (fr) * 1997-11-18 1999-05-19 Matsushita Electronics Corporation Lampe à décharge à haute pression, dispositif optique d'éclairage l'utilisant en tant que source de lumière, et système d'affichage d'image
EP1109199A2 (fr) 1999-12-17 2001-06-20 General Electric Company Tige de support pour le centrage de tubes à arc à halogénures métalliques en céramique dans des capsules PAR
DE10020348A1 (de) * 2000-04-26 2001-11-08 Tetsuhiro Kano Reflektor für elektromagnetische Strahlen und Verfahren zum Erzeugen einer Reflektorform

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420801A (en) * 1980-07-03 1983-12-13 General Electric Company Reflector lamp
JPH0773001B2 (ja) * 1985-10-18 1995-08-02 東芝ライテック株式会社 投光光源装置
US5144190A (en) * 1990-02-22 1992-09-01 Welch Allyn, Inc. Light source having desired color temperature and chromaticity
FR2753147B1 (fr) * 1996-09-06 1998-12-04 Valeo Vision Feu pour vehicule automobile, pour montage depuis l'exterieur
US6586864B2 (en) * 1998-05-21 2003-07-01 General Electric Company Reflector lamp having a reflecting section with faceted surfaces

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282100A1 (fr) 1987-03-11 1988-09-14 EASTMAN KODAK COMPANY (a New Jersey corporation) Projecteur pour véhicule et procédé de fabrication d'un système optiquement actif pour ce projecteur
DE3808086A1 (de) 1988-03-11 1989-09-28 Hella Kg Hueck & Co Reflektor fuer abgeblendete oder abblendbare kraftfahrzeugscheinwerfer
US5725298A (en) * 1996-02-23 1998-03-10 Hella Kg Hueck & Co. Vehicular headlight providing high-beam and depressed-beam illumination, and light source therefor
EP0881425A2 (fr) * 1997-05-26 1998-12-02 Christian Bartenbach Lampe
EP0917180A1 (fr) * 1997-11-18 1999-05-19 Matsushita Electronics Corporation Lampe à décharge à haute pression, dispositif optique d'éclairage l'utilisant en tant que source de lumière, et système d'affichage d'image
EP1109199A2 (fr) 1999-12-17 2001-06-20 General Electric Company Tige de support pour le centrage de tubes à arc à halogénures métalliques en céramique dans des capsules PAR
DE10020348A1 (de) * 2000-04-26 2001-11-08 Tetsuhiro Kano Reflektor für elektromagnetische Strahlen und Verfahren zum Erzeugen einer Reflektorform

Also Published As

Publication number Publication date
CN1800706B (zh) 2010-06-16
US20060119245A1 (en) 2006-06-08
CA2529114A1 (fr) 2006-06-06
CN1800706A (zh) 2006-07-12
JP4787610B2 (ja) 2011-10-05
DE102004058750A1 (de) 2006-06-08
JP2006164983A (ja) 2006-06-22
US7180229B2 (en) 2007-02-20

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