EP2047718A1 - High-pressure discharge lamp - Google Patents
High-pressure discharge lampInfo
- Publication number
- EP2047718A1 EP2047718A1 EP06762882A EP06762882A EP2047718A1 EP 2047718 A1 EP2047718 A1 EP 2047718A1 EP 06762882 A EP06762882 A EP 06762882A EP 06762882 A EP06762882 A EP 06762882A EP 2047718 A1 EP2047718 A1 EP 2047718A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer bulb
- pressure discharge
- discharge lamp
- terminal
- switch
- 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.)
- Granted
Links
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 claim 1. It also relates to a method for driving a high-pressure discharge lamp according to the preamble of patent claim 5.
- FIG. 1 schematically shows 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 port 12 and a second port 14.
- the second port 14 is e.g. to mass.
- 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.
- first path 24 of the spiral pulse generator By “interposed” is to be understood that a possible current flows through a first path 24 of the spiral pulse generator, while the second The first line 24 and the second line 26 can be bridged by means of a short-circuit switch 28.
- the second line 26 is connected to ground via a charging resistor 30.
- the spiral pulse generator 22 serves to ignite the active gas located in the discharge vessel 16. After ignition, a current predetermined by the external connection 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 line 24 of the spiral pulse generator 22. Due to the internal resistance of the Spiralpuls- generator 22, therefore, there is a voltage drop Thus, in the spiral pulse generator 22, during normal lamp operation, electrical power is converted to heat, in addition to 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 - the socket of the discharge vessel 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 ignition device then only brings 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.
- the method according to the invention for driving a high-pressure discharge lamp, in which ignition takes place by means of an ignition device which is arranged together with a discharge vessel in an outer bulb of the high-pressure discharge lamp, is characterized in that after ignition a switch is activated which controls the operation of the high-pressure discharge lamp necessary current at the ignition device. at directs.
- the switch is preferably thermally activated.
- the method can be further developed by using the high-pressure discharge lamp in the previously mentioned embodiments.
- Figure 1 schematically illustrates the essential components of a high-pressure discharge lamp of that (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.
- Figure 2 shows the arranged in a lamp outer bulb 10 essential components of a high-pressure discharge lamp according to the invention in a representation analogous to Figure 1, 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 (to be more precise its first conduction path 24), ie is also interposed between the connection 12 of the bulb outer bulb 10 and the connection 18.
- the spiral pulse generator is still used to ignite the lamp, that is, the active gas in the discharge vessel 16. This is described in more detail in the subsequently published DE 10 2005 061 832.
- the closing one Bimetallic switch 32 is active after the ignition when due to the operation of the lamp, the temperature in the lamp outer bulb 10 rises. 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 DE 10 2005 061 832 which has an improved ignitability, is thereby further optimized.
Abstract
Description
Claims
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 true EP2047718A1 (en) | 2009-04-15 |
EP2047718B1 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 |
US4258289A (en) * | 1979-05-09 | 1981-03-24 | Westinghouse Electric Corp. | Metal halide lamp for operation with a mercury ballast |
US4258288A (en) * | 1979-05-09 | 1981-03-24 | Westinghouse Electric Corp. | Resistor-aided starting of metal halide lamps |
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 |
DE202004010625U1 (en) * | 2004-07-06 | 2004-11-04 | Eysing, Volker Wilhelm | Office chair has flexible backrest consisting of horizontal plastic air-filled slats within a surrounding sleeve |
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 US US12/309,257 patent/US20090322226A1/en not_active Abandoned
- 2006-07-28 WO PCT/EP2006/007501 patent/WO2008011904A1/en active Application Filing
- 2006-07-28 JP JP2009522093A patent/JP2009545125A/en active Pending
- 2006-07-28 DE DE502006009039T patent/DE502006009039D1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2008011904A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20090322226A1 (en) | 2009-12-31 |
DE502006009039D1 (en) | 2011-04-14 |
WO2008011904A1 (en) | 2008-01-31 |
EP2047718B1 (en) | 2011-03-02 |
JP2009545125A (en) | 2009-12-17 |
CN101502176A (en) | 2009-08-05 |
ATE500716T1 (en) | 2011-03-15 |
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