WO2011015456A2 - High-pressure discharge lamp having ceramic discharge vessel - Google Patents
High-pressure discharge lamp having ceramic discharge vessel Download PDFInfo
- Publication number
- WO2011015456A2 WO2011015456A2 PCT/EP2010/060604 EP2010060604W WO2011015456A2 WO 2011015456 A2 WO2011015456 A2 WO 2011015456A2 EP 2010060604 W EP2010060604 W EP 2010060604W WO 2011015456 A2 WO2011015456 A2 WO 2011015456A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- discharge vessel
- discharge lamp
- pressure discharge
- lamp
- outer bulb
- 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
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
Definitions
- the invention relates to a high-pressure discharge lamp, with a ceramic discharge vessel, also called ceramic burner according to the preamble of claim 1.
- a ceramic discharge vessel also called ceramic burner according to the preamble of claim 1.
- These are in particular metal halide lamps. and a metal halide without or with integrated ballast in which by the oblique mounting of the burner in the lamp in the vertical lamp burning position, the load on the electrodes and smoldering is reduced by the aggressive metal halide, resulting in a longer life.
- the burners are installed perpendicular to the lamp axis.
- the wire of the lower foot-near electrode is bent inwards or an additional wire is welded transversely between the electrode and the burner.
- a minimum length of a lamp with a ceramic burner filled with metal halides is disclosed in JP-A 2005203309.
- the burner is installed at a slight angle into the lamp.
- the boundary condition is that the distances between the rack electrodes are set so that no flashovers occur between them, which is generally by a distance of et Wa 5 mm can be guaranteed.
- the minimum distance between the electrodes of 5 mm is achieved by the inclination of the burner at an angle between 3 ° and 4 ° relative to the lamp axis.
- a lamp in particular with a metal halide filling, which has the greatest possible lifetime in the vertical lamp burning position, which is realized by an oblique position of the burner in the lamp relative to the lamp axis.
- the angle of inclination must be selected so that the metal halides do not touch the electrodes in the torch when hot.
- the metal halides should not penetrate into the capillaries. This is avoided by a suitable inclination of the discharge vessel.
- the required angle range between the lamp axis and the burner is in a range of 15 ° to 80 °. Preferred is a range of 20 ° to 50 °.
- the inclination of the ceramic burner and with metal halide filling ensures that in the vertical burning position, which is prevalent in particular in street lighting applications, the metal halides do not touch the electrode and do not penetrate into the capillary. The consequence is that, in particular, the melts are less exposed to the corrosive action of the metal halides, which significantly increases the service life.
- the optimal angle of inclination depends on the design of the burner. In the case of cylindrical burners, in particular, even a slight oblique setting of the burner at an angle of 15 ° to 25 ° to the lamp axis can be achieved. For more spherical or rounded burners, larger angles are advantageous. They are in the range of 20 ° to 70 °.
- the maximum adjustable angle is determined by the diameter of the outer piston in the meltdown area, the length of the burner and the frame structure.
- a 100 W burner can be installed in an outer bulb with a minimum diameter in the melting range of approximately 26 to 34 mm at an angle of approximately 20 ° to 30 ° to the lamp axis. s. Taking the tolerances into account, the angle range between 20 ° and 35 ° can be used for this application example.
- the metal halide-filled ceramic torches generally have the property that the distance between the two electrodes between which the arc builds is relatively small.
- the discharge arc is relatively short. It is usually 3 to 15 mm, so that it can almost be regarded as punctiform.
- the burner itself has a nearly angle-independent radiation characteristic.
- a burner almost toroidal or at least provided with rounded corners, as it is known from US 5,936,351, and which consists of translucent ceramic, the small asymmetries resulting from the Einschmelz Symposiume be compensated again.
- the lamp has a homogeneous, virtually angle-independent emission characteristic.
- this litter layer has the advantage that the oblique burner is not directly visible.
- the lamp may preferably additionally a disc of mica or metal, for example, aluminum, are used, whereby it is achieved that the light which is emitted by the inclination of the burner in the direction of the melting or the base, is reflected at this disc , whereby with a lamp without this disc, an increase in the light output is achieved.
- a disc of mica or metal for example, aluminum
- the discharge vessel 1 shows a high-pressure discharge lamp 1 with a ceramic discharge vessel 2 and a lamp axis A.
- the discharge vessel 2 is made of A12O3 and has rounded ends 3 and capillaries 4 attached thereto, as known per se. It is filled with metal halides and contains two electrodes.
- the discharge vessel 2 is supported on two rack holders, namely a short holder 13 whose end is inclined outwardly against the axis A, and a long holder 14.
- the two holders 13, 14 are attached to a researcheinschmelzung 5, which closes an outer bulb 6.
- the outer bulb 6 is bulged, here in particular approximately spherical.
- the inside of the outer bulb 6 is coated with a litter layer 7.
- the long holder 1 has an initial part 15, which is inclined outwardly against the axis A, a straight elongate central part 16, and a free end 17, which is angled back to the axis A.
- the outer bulb 7 is seated in a base 8, as known per se.
- a screw base is shown.
- the base 8 may include an integrated electronic ballast in a housing 18, as known per se.
- a getter 10 is advantageously included in the outer bulb.
- the installation of the burner by means of the foot 5 allows enough space in the outer bulb for oblique mounting.
- the outer bulb can also be closed with a pinch.
- FIG. 2 shows a representative representation of the life behavior for different lamps. These are 70 W lamps with a ceramic discharge vessel. Lifespan is shown for lamps whose discharge vessel or burner is vertical, with base upwards (burning position BU) and base downwards (burning position BD). The step-like curve results from the non-continuous inspection of the lamps. Compared to this is an arrangement of lamps whose burner is arranged horizontally (focal position HF). As expected, the HF alignment gives the best results as the capillaries are least stressed.
- N 90 ° - ⁇ .
- the service life irrespective of the burning position, is only insignificantly worse than in the optimal case of a burning position HF, but significantly better than in the frequently expected cases of a burning position BU or BF.
- a high-pressure discharge lamp with an outer bulb which defines an axis wherein a ceramic discharge vessel with two ends, which has capillaries at the ends, is arranged obliquely in the outer bulb and is held there by means of a frame, wherein the discharge vessel is a filling, the metal halides, characterized marked, characterized in that the discharge vessel is inclined by an angle alpha of at least 15 ° to the axis, and wherein this angle is at most 75 °. 2.
- High-pressure discharge lamp according to claim 1 characterized in that the angle is 20 to 30 °.
- High-pressure discharge lamp according to claim 1 characterized in that the discharge vessel has electrodes and rounded ends. 4. High-pressure discharge lamp according to claim 1, characterized in that the outer bulb is bulged, in particular elliptical or spherical.
- High-pressure discharge lamp according to claim 1 characterized in that the outer bulb is coated with a scattering layer.
- High-pressure discharge lamp according to claim 1 characterized in that the outer bulb is closed in the vicinity of the base by means of a hereeinschmelzung. 7. High-pressure discharge lamp according to claim 1, characterized in that in the direction of the pedestal below the discharge vessel, a disc is mounted, which reflects the light emitted by the discharge vessel in this direction light.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010900006111U CN202454528U (en) | 2009-08-06 | 2010-07-22 | High-voltage discharge lamp with external bulb |
DE112010000040T DE112010000040A5 (en) | 2009-08-06 | 2010-07-22 | High pressure discharge lamp with ceramic discharge vessel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EPPCT/EP2009/060223 | 2009-08-06 | ||
PCT/EP2009/060223 WO2011015246A1 (en) | 2009-08-06 | 2009-08-06 | High-pressure discharge lamp with ceramic discharge vessel |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011015456A2 true WO2011015456A2 (en) | 2011-02-10 |
WO2011015456A3 WO2011015456A3 (en) | 2011-04-07 |
Family
ID=41226119
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/060223 WO2011015246A1 (en) | 2009-08-06 | 2009-08-06 | High-pressure discharge lamp with ceramic discharge vessel |
PCT/EP2010/060604 WO2011015456A2 (en) | 2009-08-06 | 2010-07-22 | High-pressure discharge lamp having ceramic discharge vessel |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/060223 WO2011015246A1 (en) | 2009-08-06 | 2009-08-06 | High-pressure discharge lamp with ceramic discharge vessel |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN202454528U (en) |
DE (1) | DE112010000040A5 (en) |
WO (2) | WO2011015246A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5936351A (en) | 1996-11-07 | 1999-08-10 | Osram Sylvania Inc. | Ceramic discharge vessel |
JP2005203309A (en) | 2004-01-19 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Discharge lamp and lighting system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2904710A (en) * | 1957-04-19 | 1959-09-15 | Gen Electric | Reflector mercury lamp mount |
US5229681A (en) * | 1989-10-10 | 1993-07-20 | Musco Corporation | Discharge lamp with offset or tilted arc tube |
US5016150A (en) * | 1989-10-19 | 1991-05-14 | Musco Corporation | Means and method for increasing output, efficiency, and flexibility of use of an arc lamp |
US5161883A (en) * | 1989-10-19 | 1992-11-10 | Musco Corporation | Means and method for increasing output, efficiency, and flexibility of use of an arc lamp |
US4990819A (en) * | 1989-11-06 | 1991-02-05 | North American Philips Corporation | HID lamp having a canted arc tube and frame with rotary locking joints |
WO2008119623A1 (en) * | 2007-03-30 | 2008-10-09 | Osram Gesellschaft mit beschränkter Haftung | Assembly for an electric lamp comprising an outer bulb |
-
2009
- 2009-08-06 WO PCT/EP2009/060223 patent/WO2011015246A1/en active Application Filing
-
2010
- 2010-07-22 CN CN2010900006111U patent/CN202454528U/en not_active Expired - Fee Related
- 2010-07-22 WO PCT/EP2010/060604 patent/WO2011015456A2/en active Application Filing
- 2010-07-22 DE DE112010000040T patent/DE112010000040A5/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5936351A (en) | 1996-11-07 | 1999-08-10 | Osram Sylvania Inc. | Ceramic discharge vessel |
JP2005203309A (en) | 2004-01-19 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Discharge lamp and lighting system |
Also Published As
Publication number | Publication date |
---|---|
WO2011015246A1 (en) | 2011-02-10 |
WO2011015456A3 (en) | 2011-04-07 |
DE112010000040A5 (en) | 2013-02-07 |
CN202454528U (en) | 2012-09-26 |
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