EP2047718B1 - High-pressure discharge lamp - Google Patents
High-pressure discharge lamp Download PDFInfo
- Publication number
- EP2047718B1 EP2047718B1 EP06762882A EP06762882A EP2047718B1 EP 2047718 B1 EP2047718 B1 EP 2047718B1 EP 06762882 A EP06762882 A EP 06762882A EP 06762882 A EP06762882 A EP 06762882A EP 2047718 B1 EP2047718 B1 EP 2047718B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer bulb
- terminal
- pressure discharge
- discharge vessel
- lamp
- 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.)
- Not-in-force
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/06—Starting switches thermal only
Definitions
- the invention relates to a high-pressure discharge lamp according to the preamble of patent claim 1.
- FIG. 1 shows schematically the most important components of such a high-pressure discharge lamp.
- a generally designated 10 lamp outer bulb is symbolically illustrated by a dot-dashed contour.
- On the outer bulb there is a first terminal 12 and a second terminal 14.
- the second terminal 14 is eg grounded.
- a discharge vessel 16 having a first terminal 18 and a second terminal 20, the latter is also grounded.
- a spiral pulse generator 22 Interposed between the first terminal 12 of the bulb outer bulb 10 and the first terminal 18 of the discharge vessel is a spiral pulse generator 22.
- interposed means that a possible current flows through a first conducting path 24 of the spiral pulse generator, while the second conducting path 26 not connected to the discharge vessel.
- the first line 24 and the second line 26 can be bridged by means of a short-circuit switch 28.
- the second conduction path 26 is connected via a charging resistor 30 to ground.
- the spiral pulse generator 22 serves to ignite the active gas located in the discharge vessel 16. After ignition, a current predetermined by the outer circuitry of the lamp flows through the discharge vessel 16 and thus from the first terminal 12 of the lamp outer bulb 10 to the second terminal 14, ie in particular via the intermediate voltage generator 22 or more precisely via the first conductor 24 of the spiral pulse generator 22. Due to the internal resistance of the spiral pulse generator 22, there is therefore a voltage drop across the Spiral pulse generator 22. Thus, in the spiral pulse generator 22, during normal lamp operation, electrical power is converted to heat, in addition to the heat generated by the discharge vessel. This power is lost to the lamp, so the system efficiency is correspondingly reduced. The generator is additionally heated, so that its life is shortened.
- a temperature-dependent closing switch is connected in parallel with the ignition device between the first connection of the outer bulb and the first connection of the discharge vessel. Since the discharge vessel 16 heats up considerably during operation - a value of 500 ° C. is reached soon after ignition, for example - at the base of the discharge vessel, the switch is thus closed during operation and the ignition device is bridged. This eliminates the disadvantage that over the ignition device, a voltage drops and thus power is lost.
- the invention is independent of the ignition device used, preferably a spiral pulse generator is used.
- the temperature-dependent switch is preferably a bimetallic switch.
- a bimetal switch has the advantage that it also opens again depending on the temperature.
- Another disadvantage of the prior art is overcome, which results from the fact that a heated discharge vessel requires a higher ignition voltage. Often, after prolonged use, the discharge vessel is so heated that it can not ignite immediately when it is switched off and switched on again at short notice. A corresponding igniter then brings only voltages that are too low.
- the bimetallic switch the ignition device remains bridged, even if the lamp is turned off until the discharge vessel has cooled sufficiently. The ignition device is thus not activated in vain when restarting, but remains inactive.
- a suitable closing temperature ie the temperature at which the switch closes after the temperature has been increased, is between 70 ° C and 500 ° C, preferably between 90 ° C and 350 ° C.
- the lower limit is mainly determined by typical temperatures, which can prevail in given ambient influences in the lamp outer bulb; it should be at least 10 ° to 15 ° above these temperatures.
- An upper possible value for the closing temperature results from the proximity of the temperature-dependent closing switch to the discharge vessel and the desired speed when switching, both in terms of closing and reopening.
- FIG. 2 shows the arranged in a lamp outer bulb 10 essential components of a high-pressure discharge lamp according to the invention in a FIG. 1 analog representation, wherein the same reference numerals are used for the same components.
- the starting point was that a spiral pulse generator 22 between the input 12 of the lamp outer bulb 10 and the input 18 of the discharge vessel 16 was interposed.
- the invention now provides a bimetallic switch 32, which closes when the temperature increases, and which is connected in parallel with the spiral pulse generator 22 (more precisely, to its first conducting path 24), ie is likewise interposed between the connection 12 of the lamp outer bulb 10 and the connection 18.
- the spiral pulse generator is still used to ignite the lamp, that is, the active gas located in the discharge vessel 16.
- the closing bimetallic switch 32 becomes active after ignition when the operation of the Lamp due to the temperature in the lamp outer bulb 10 increases.
- the closing temperature of the bimetallic switch 32 When the closing temperature of the bimetallic switch 32 is reached, it closes and prevents the operating current flowing through the discharge vessel 16 (from the terminal 12 to the terminal 14 of the bulb outer bulb 10) causing a considerable voltage drop, resulting in a loss of power.
- the only provided for the ignition Spiralpulsgenerator 22 is thus bypassed after fulfilling its task circuit.
- the high pressure discharge lamp from the DE 10 2005 061 832 which has an improved ignitability, is thereby further optimized.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Hochdruckentladungslampe nach dem Oberbegriff von Patentanspruch 1.The invention relates to a high-pressure discharge lamp according to the preamble of patent claim 1.
Eine solche Hochdruckentladungslampe und ein solches Verfahren sind in der nach dem Anmeldetag der vorliegenden Anmeldung veröffentlichten
Der Spiralpulsgenerator 22 dient zum Zünden des in dem Entladungsgefäß 16 befindlichen Wirkgases. Nach dem Zünden fließt ein durch die Außenbeschaltung der Lampe vorgegebener Strom durch das Entladungsgefäß 16 und somit vom ersten Anschluss 12 des Lampen-Außenkolbens 10 zum zweiten Anschluss 14, also insbesondere über den zwischengeschalteten Spannungsgenerator 22 bzw. genauer gesagt über die erste Leitungsbahn 24 des Spiralpulsgenerators 22. Durch den Innenwiderstand des Spiralpulsgenerators 22 kommt es daher zu einem Spannungsabfall über dem Spiralpulsgenerator 22. Somit wird im Spiralpulsgenerator 22 während des normalen Lampenbetriebs elektrische Leistung in Wärme umgesetzt, zusätzlich zur von dem Entladungsgefäß erzeugten Wärme. Diese Leistung ist für die Lampe verloren, so dass entsprechend die Systemeffizienz verringert ist. Der Generator wird zusätzlich aufgeheizt, so dass seine Lebensdauer verkürzt wird.The
Aus dem
Aus dem
Es ist Aufgabe der Erfindung, die genannten Nachteile, die die Hochdruckentladungslampe nach dem Oberbegriff von Patentanspruch 1, welche unter Bezug auf
Der temperaturabhängige Schalter ist bevorzugt ein Bimetallschalter. Ein Bimetallschalter hat den Vorteil, dass er sich temperaturabhängig auch wieder öffnet. So wird auch ein weiterer Nachteil des Standes der Technik überwunden, der sich daraus ergibt, dass ein erhitztes Entladungsgefäß eine höhere Zündspannung benötigt. Oft ist nach längerem Betrieb das Entladungsgefäß so erhitzt, dass es, wenn es ausgeschaltet und kurzfristig wieder eingeschaltet wird, nicht sofort wieder zünden kann. Eine entsprechende Zündvorrichtung bringt dann lediglich Spannungen auf, die zu gering sind. Bei Verwendung des Bimetallschalters bleibt die Zündvorrichtung überbrückt, auch wenn die Lampe ausgeschaltet wird, bis sich das Entladungsgefäß ausreichend abgekühlt hat. Die Zündvorrichtung wird somit bei einem Wiedereinschalten nicht vergeblich aktiviert, sondern bleibt inaktiv.The temperature-dependent switch is preferably a bimetallic switch. A bimetal switch has the advantage that it also opens again depending on the temperature. Thus, another disadvantage of the prior art is overcome, which results from the fact that a heated discharge vessel requires a higher ignition voltage. Often, after prolonged use, the discharge vessel is so heated that it can not ignite immediately when it is switched off and switched on again at short notice. A corresponding igniter then brings only voltages that are too low. When using the bimetallic switch, the ignition device remains bridged, even if the lamp is turned off until the discharge vessel has cooled sufficiently. The ignition device is thus not activated in vain when restarting, but remains inactive.
Eine geeignete Schließtemperatur, also die Temperatur, bei der der Schalter schließt, nachdem die Temperatur erhöht wurde, liegt zwischen 70° C und 500° C, bevorzugt zwischen 90° C und 350° C. Die untere Grenze bestimmt sich hauptsächlich aus typischen Temperaturen, die bei gegebenen Umwelteinflüssen im Lampenaußenkolben herrschen können; sie sollte mindestens 10° bis 15° über diesen Temperaturen liegen. Ein oberer möglicher Wert für die Schließtemperatur ergibt sich aus der Nähe des temperaturabhängig schließenden Schalters zum Entladungsgefäß und der gewünschten Schnelligkeit beim Umschalten, und zwar sowohl was das Schließen als auch das Wiederöffnen betrifft.A suitable closing temperature, ie the temperature at which the switch closes after the temperature has been increased, is between 70 ° C and 500 ° C, preferably between 90 ° C and 350 ° C. The lower limit is mainly determined by typical temperatures, which can prevail in given ambient influences in the lamp outer bulb; it should be at least 10 ° to 15 ° above these temperatures. An upper possible value for the closing temperature results from the proximity of the temperature-dependent closing switch to the discharge vessel and the desired speed when switching, both in terms of closing and reopening.
Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend unter Bezug auf die Zeichnung beschrieben, in der:
- Figur 1
- schematisch die wesentlichen Bauteile einer Hochdruckentladungs- lampe desjenigen (nachveröffentlichten) Standes der Technik ver- anschaulicht, von dem die Erfindung ausgeht, und
- Figur 2
- schematisch die wesentlichen Bestandteile einer erfindungsgemä- ßen Hochdruckentladungslampe veranschaulicht.
- FIG. 1
- schematically illustrates the essential components of a high-pressure discharge lamp of the (post-published) prior art, from which the invention proceeds, and
- FIG. 2
- schematically illustrates the essential components of a high-pressure discharge lamp according to the invention.
Ausgangslage war, dass ein Spiralpulsgenerator 22 zwischen dem Eingang 12 des Lampen-Außenkolbens 10 und dem Eingang 18 des Entladungsgefäßes 16 zwischengeschaltet war. Die Erfindung stellt nun einen sich bei Erhöhung der Temperatur schließenden Bimetallschalter 32 bereit, der parallel zum Spiralpulsgenerator 22 (genauer gesagt zu dessen erster Leitungsbahn 24) geschaltet ist, also ebenfalls zwischen den Anschluss 12 des Lampen-außenkolbens 10 und den Anschluss 18 zwischengeschaltet ist.The starting point was that a
Der Spiralpulsgenerator dient nach wie vor zum Zünden der Lampe, also des in dem Entladungsgefäß 16 befindlichen Wirkgases. Dieses ist genauer in der nachveröffentlichten
Claims (4)
- High-pressure discharge lamp with an outer bulb (10), on which a first connection (12) and a second connection (14) are provided, and with a discharge vessel (16) accommodated in the outer bulb (10) with a first and a second connection (18, 20) and with an ignition apparatus (22), which is accommodated in the outer bulb (10) and is connected between the first connection (12) of the outer bulb and the first connection (18) of the discharge vessel (16), characterized in that a switch (32) which closes as a function of temperature is connected in parallel with the ignition apparatus (22) between the first connection (12) of the outer bulb (10) and the first connection (18) of the discharge vessel (16).
- High-pressure discharge lamp according to Claim 1, the ignition apparatus being a spiral pulse generator (22).
- High-pressure discharge lamp according to Claim 1 or 2, characterized in that the switch which closes as a function of temperature is a bimetallic switch (32).
- High-pressure discharge lamp according to one of the preceding claims, characterized in that the switch (32) closes in the event of an increase in temperature to a closing temperature, which is between 70°C and 500°C, preferably between 90°C and 350°C.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/007501 WO2008011904A1 (en) | 2006-07-28 | 2006-07-28 | High-pressure discharge lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2047718A1 EP2047718A1 (en) | 2009-04-15 |
EP2047718B1 true EP2047718B1 (en) | 2011-03-02 |
Family
ID=37735170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06762882A Not-in-force EP2047718B1 (en) | 2006-07-28 | 2006-07-28 | High-pressure discharge lamp |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090322226A1 (en) |
EP (1) | EP2047718B1 (en) |
JP (1) | JP2009545125A (en) |
CN (1) | CN101502176A (en) |
AT (1) | ATE500716T1 (en) |
DE (1) | DE502006009039D1 (en) |
WO (1) | WO2008011904A1 (en) |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2808261C3 (en) * | 1978-02-25 | 1981-02-05 | Peter 7750 Konstanz Kreutzer | Circuit arrangement for igniting and operating a fluorescent lamp with preheatable electrodes on a transistorized inverter |
US4258288A (en) * | 1979-05-09 | 1981-03-24 | Westinghouse Electric Corp. | Resistor-aided starting of metal halide lamps |
US4258289A (en) * | 1979-05-09 | 1981-03-24 | Westinghouse Electric Corp. | Metal halide lamp for operation with a mercury ballast |
JPS5926112B2 (en) * | 1980-08-18 | 1984-06-23 | 株式会社日立製作所 | high pressure discharge lamp |
FI61599C (en) * | 1980-09-10 | 1982-08-10 | Helvar Oy | ELEKTRONISK TAENDARE AV LYSLAMPA |
US4379982A (en) * | 1980-10-02 | 1983-04-12 | Gte Laboratories Incorporated | Low energy starting aid for high intensity discharge lamps |
US4325004A (en) * | 1980-10-02 | 1982-04-13 | Gte Laboratories Incorporated | Method and apparatus for starting high intensity discharge lamps |
US4353012A (en) * | 1981-04-24 | 1982-10-05 | Gte Laboratories Incorporated | Pulse injection starting for high intensity discharge metal halide lamps |
US4549764A (en) * | 1983-09-14 | 1985-10-29 | K. L. Spring & Stamping Corporation | Flexible chair back |
US4572986A (en) * | 1984-04-16 | 1986-02-25 | Gte Products Corporation | Circuit breaker with thin-walled bulb |
US4751398A (en) * | 1986-03-18 | 1988-06-14 | The Bodine Company | Lighting system for normal and emergency operation of high intensity discharge lamps |
US4740861A (en) * | 1986-12-05 | 1988-04-26 | Advance Transformer Company | Thermal protection device for a dual input voltage lamp transformer/ballast apparatus |
US4869552A (en) * | 1988-09-14 | 1989-09-26 | Shelby Williams Industries, Inc. | Flexible backrest assembly for a chair |
JP3799461B2 (en) * | 1997-11-28 | 2006-07-19 | 岩崎電気株式会社 | Metal halide lamp with built-in starter with pulse stop function |
JP2001126663A (en) * | 1999-10-28 | 2001-05-11 | Toshiba Lighting & Technology Corp | High-pressure discharge lamp |
US6323597B1 (en) * | 2000-05-15 | 2001-11-27 | Jlj, Inc. | Thermistor shunt for series wired light string |
JP3436252B2 (en) * | 2000-06-30 | 2003-08-11 | 松下電器産業株式会社 | High pressure discharge lamp |
US6896327B1 (en) * | 2004-03-30 | 2005-05-24 | Daniel Paul Chairs, Llc | Flexible back mechanism for stackable chairs |
DE102004032765C9 (en) * | 2004-07-06 | 2009-02-26 | Volker Wilhelm Eysing | Office chair with flexible backrest |
DE102005061832A1 (en) * | 2005-12-23 | 2007-06-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp with improved ignitability and high voltage pulse generator |
-
2006
- 2006-07-28 CN CNA2006800554970A patent/CN101502176A/en active Pending
- 2006-07-28 EP EP06762882A patent/EP2047718B1/en not_active Not-in-force
- 2006-07-28 AT AT06762882T patent/ATE500716T1/en active
- 2006-07-28 JP JP2009522093A patent/JP2009545125A/en active Pending
- 2006-07-28 DE DE502006009039T patent/DE502006009039D1/en active Active
- 2006-07-28 WO PCT/EP2006/007501 patent/WO2008011904A1/en active Application Filing
- 2006-07-28 US US12/309,257 patent/US20090322226A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20090322226A1 (en) | 2009-12-31 |
EP2047718A1 (en) | 2009-04-15 |
WO2008011904A1 (en) | 2008-01-31 |
DE502006009039D1 (en) | 2011-04-14 |
ATE500716T1 (en) | 2011-03-15 |
CN101502176A (en) | 2009-08-05 |
JP2009545125A (en) | 2009-12-17 |
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