EP2047721B1 - Dispositif de surveillance - Google Patents

Dispositif de surveillance Download PDF

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Publication number
EP2047721B1
EP2047721B1 EP07786401A EP07786401A EP2047721B1 EP 2047721 B1 EP2047721 B1 EP 2047721B1 EP 07786401 A EP07786401 A EP 07786401A EP 07786401 A EP07786401 A EP 07786401A EP 2047721 B1 EP2047721 B1 EP 2047721B1
Authority
EP
European Patent Office
Prior art keywords
monitoring device
lamp
fluorescent lamp
temperature
monitoring
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
Application number
EP07786401A
Other languages
German (de)
English (en)
Other versions
EP2047721A1 (fr
Inventor
Gerhard Schwarz
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.)
Cooper Crouse Hinds GmbH
Original Assignee
Cooper Crouse Hinds GmbH
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 Cooper Crouse Hinds GmbH filed Critical Cooper Crouse Hinds GmbH
Priority to PL07786401T priority Critical patent/PL2047721T3/pl
Priority to SI200730991T priority patent/SI2047721T1/sl
Publication of EP2047721A1 publication Critical patent/EP2047721A1/fr
Application granted granted Critical
Publication of EP2047721B1 publication Critical patent/EP2047721B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/10—Safety devices structurally associated with lighting devices coming into action when lighting device is overloaded, e.g. thermal switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp

Definitions

  • the invention relates to a monitoring device for monitoring at least one fluorescent lamp and a corresponding lamp with such a monitoring device.
  • Corresponding fluorescent lamps are used, for example, as explosion-proof linear luminaires in such potentially explosive areas. It has been found in operation of luminaires with such fluorescent lamps that local overheating of the lamp cap and / or the lamp socket can occur. This is commonly referred to as the "end-of-life" phenomenon where the inadmissible increase in temperature results, a coil is consumed as an electrode, and more and more energy is needed to maintain the flow of electrons to operate the fluorescent lamp.
  • the corresponding consumption of the filament makes it particularly difficult for the electrons to escape from the material, which can lead to an increased voltage drop. Even frequent cold starts can accelerate the consumption of the coil.
  • the corresponding ballast of the fluorescent lamps will then produce a high power loss when supplied with a substantially constant current, which can lead to the increased temperature of the fluorescent lamp in the range of lamp base, lamp socket and coil.
  • the invention is based on the object, with a corresponding fluorescent lamp to avoid such a strong increase in temperature, especially in the hazardous area while maintaining the appropriate explosion protection.
  • At least one coil is associated with a temperature measuring device. Furthermore, an electro-mechanical interruption device is provided, by which the energy supply to the fluorescent lamp can be interrupted upon reaching a predetermined, critical upper temperature value.
  • a similar temperature measuring device is known from document US Pat. No. 6,888,244 B1 ,
  • all coils of the corresponding fluorescent lamp are monitored by a respectively associated temperature measuring device.
  • the temperature measuring device reliably prevents an inadmissible increase in temperature in the area of the coil.
  • the critical temperature value can correspond to a predetermined limit, which is specified by the explosion protection for surface temperatures of parts of the fluorescent lamp.
  • an impermissible temperature increase of the corresponding luminaire is reliably prevented in this way and the luminaire can be used in particular in potentially explosive areas.
  • the filaments of a fluorescent lamp heat differently. It may be advantageous if the temperature is detected in the region of each coil of the corresponding fluorescent lamp. As soon as one of the corresponding temperatures exceeds the predetermined, critical temperature value, an interruption of the energy supply takes place.
  • the critical temperature is adjustable. As a result, for example, a corresponding distance between helix and temperature measuring device, which optionally leads to a systematic error of the temperature measurement, are taken into account. Also environmental influences can be compensated.
  • temperature measuring device and electro-mechanical interruption device are integrally formed.
  • a bimetallic switch consists of two metals with different thermal expansion coefficients. At appropriate temperature, the metals move away from each other, leaving an electrical connection is interrupted. In this case, temperature measurement and mechanical interruption of the energy supply takes place in one part.
  • the temperature measuring device which is designed, for example, as a temperature sensor, transmits a signal corresponding to the measured temperature value to the interruption device.
  • the temperature measuring device and interruption device are arranged at different locations.
  • the temperature sensors transmit the signal to the interruption device, which can be designed, for example, as a relay, in particular as a contactor or the like.
  • the interruption of the power supply to the fluorescent lamp then takes place in accordance with the received signal.
  • the temperature measuring device is a bimetal switch
  • a corresponding control current for the relay or contactor can flow through the bimetallic switch. If this then reaches a temperature which corresponds to the critical temperature value, the bimetallic switch opens and no control current flows anymore. As a result, the relay or contactor is moved to the off position, thereby interrupting the power supply.
  • Such a signal of the temperature measuring device is referred to here as a voltage interrupt signal.
  • the temperature measuring device may be analog or digital and converted into a corresponding signal
  • a comparison device may be required which compares this signal with a signal corresponding to the predetermined, critical temperature value. Only when it is determined by this comparison device that the critical temperature value is reached or exceeded, then an activation of the interruption device in response to this comparison.
  • the interruption device may be a relay or contactor, but at least an electro-mechanical interruption device.
  • comparison device is assigned directly to the temperature measuring device, whereby it is also possible for the comparison device the interruption device is assigned and is arranged in each case at the appropriate place together with temperature measuring or interrupting device.
  • Possibilities for realizing such a temperature measuring device are a resistance temperature sensor, an infrared sensor, or the like.
  • At least the interruption device can be arranged in the lamp socket. This can be designed to be explosion-proof for explosion-proof areas, so that possibly occurring during electro-mechanical switching sparks can not escape from the lamp socket.
  • ballasts and in particular also electrical ballasts are usually used.
  • the interruption device and optionally also the comparison device are arranged within such a ballast.
  • interruption device itself is designed as an explosion-proof device or is contained in another explosion-proof device.
  • the predetermined critical temperature value is specified by corresponding standards for explosion-proof luminaires. It is also possible that the predetermined, critical temperature value is determined taking into account lamp parameters, such as arrangement and / or structure of the coil, distance of the filament from the lamp tube, wall thickness of the lamp tube, etc .. This changes of the fluorescent lamp design can be taken into account which could set new, undefined conditions that could lead to inadmissible warming. In addition, the behavior of a corresponding fluorescent lamp can be highly dependent on ambient conditions, so that the critical temperature value can also be determined in each case for a luminaire at a corresponding installation location. Furthermore, there is the possibility that the ballast, in particular in an electronic ballast by its own “intelligence" forms the corresponding comparison device and is used for the control of the electro-mechanical interruption device.
  • the invention also relates to a luminaire with a corresponding monitoring device of the type described above.
  • FIG. 1 shows a lamp 14 as a block diagram.
  • This has at least one fluorescent lamp 2.
  • a fluorescent lamp 2 comprises a lamp tube 3, at the ends 4 and 5 respectively electrodes 6 and 7 are arranged in the form of helices 8 and 9.
  • temperature measuring devices 15 for example in the form of a measuring resistor, a bimetallic temperature sensor, an infrared sensor or the like, are arranged adjacent to and outside the lamp tube. These are used for continuous temperature monitoring of the corresponding Spirals 8, 9.
  • the respectively measured temperature value corresponding signals are transmitted via lines to an electro-mechanical interruption device 11.
  • the corresponding temperature measuring device is designed as a bimetal switch
  • a corresponding voltage interrupt signal is transmitted to the interruption device 11 when the predetermined, critical temperature value is reached.
  • this voltage interruption signal may be a zero voltage signal, by which a relay or contactor as a disconnecting device is de-energized and as a result opens a corresponding contact. By opening this contact, the power supply of the fluorescent lamp 2 is interrupted and thus overheating of the coil, the lamp cap and possibly the lamp socket, which is referred to as "end-off-life" phenomenon avoided.
  • the corresponding signal from the temperature measuring device is first compared by means of a comparison device 12 with a signal corresponding to the predetermined, critical temperature value and, depending on this comparison, a control of the electro-mechanical interruption device 11 takes place.
  • this substantially temperature measuring device and electro-mechanical interruption device 11 forms one piece, so that no division of these devices with additional signal transmission is necessary.
  • the comparison device 12 may be assigned to both the temperature measuring device 15 and the electro-mechanical interruption device 11. When assigned to the interruption device, the corresponding comparison in the comparison device for both temperature measuring devices 15 can be made separately.
  • the comparison device 12 may be arranged adjacent to the interruption device 11 and with this in a housing, such as in a lamp holder 10. Since the monitoring device 1 according to the invention is provided in particular for potentially explosive areas, at least the interruption device 11 is designed to maintain a corresponding explosion protection. This can be done in that the corresponding lamp socket 10, in which the interruption device 11 is arranged, is designed as an Ex-lamp socket. Other types of explosion protection are also possible.
  • At least a breakdown of a spark which may occur when switching the electro-mechanical interruption device 11 to the outside in the hazardous area must be avoided for the hazardous area.
  • the interruption device 11 is assigned to a ballast 13 or arranged in this.
  • a ballast is required for fluorescent lamps 2 for their operation.
  • an electronic ballast with its own “intelligence” is usually used. This "intelligence" can also take over the function of the comparison device 12, so that a corresponding control of the electro-mechanical interruption device 11 can also be carried out by the ballast 13.
  • FIG. 1 characterized by the dashed arrangement of the comparator 12 within the ballast 13.
  • the temperature measuring devices 15 are arranged outside the lamp tube 3 and adjacent to the coils 8, 9. It is also possible to improve the assignment of the temperature measuring devices to the respective coil by arranging the temperature measuring devices within the lamp tube 3. However, this requires design changes within the lamp tube. In order to monitor already installed fluorescent lamps or lamp tubes by the monitoring device 1 according to the invention, an arrangement of the temperature measuring device 15 outside of the lamp tube 3 is advantageous because in this way no structural changes of the fluorescent lamp 2 are required.
  • the monitoring device 1 can be assigned as an additional component of each lamp 4 with fluorescent lamp 2 and lamp tube 3 and lamp sockets and ballast. It is also possible that the monitoring device 1 part of a corresponding lamp 14 is, that is integrated in this accordingly.
  • the monitoring device 1 according to the invention FIG. 1 is designed so that after interruption of the power supply to the fluorescent lamp 2 and after replacement of the fluorescent lamp 2, a renewed operation of the lamp 14 with new fluorescent lamp 2 is possible. There is accordingly a reversible interruption of the power supply.
  • the corresponding critical temperature value can also be changed in order, for example, to take into account changes in a fluorescent lamp construction, new, undefined states which could lead to inadmissible heating, etc.
  • Such conditions are, for example, arrangement or construction of the coil, spacing of the coil from the lamp tube, wall thickness of the lamp tube and the like.
  • the critical temperature corresponding environmental conditions of the respective fluorescent lamp can be taken into account if they have an influence on the ambient temperature or the heating of the fluorescent lamp, whereby the position of use of the lamp can be considered.
  • both appropriately existing luminaire retrofitted with the monitoring device 1 according to the invention, as well as corresponding monitoring devices 1 can be installed together with lights.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Dispositif de surveillance pour surveiller au moins un tube fluorescent en particulier dans des zones présentant des risques d'explosion, lequel tube fluorescent comprend un tube de lampe avec des électrodes disposées aux extrémités de celui-ci sous la forme de spirales et des douilles de lampe associées à celles-ci. Ledit dispositif de surveillance est amélioré pour éviter une forte augmentation de température d'un tube fluorescent correspondant en particulier dans la zone présentant un risque d'explosion tout en conservant la protection anti-explosion correspondante, de telle sorte que le dispositif de surveillance présente au moins un dispositif de thermomètre associé à une spirale et un dispositif d'interruption électromécanique permettant d'interrompre l'alimentation du tube fluorescent en énergie si la valeur de température atteint un seuil critique spécifié.

Claims (12)

  1. Dispositif de surveillance (1) pour la surveillance d'au moins une lampe fluorescente (2) dans des zones exposées à des risques d'explosion, laquelle lampe fluorescente (2) présente un tube de lampe (3) avec des électrodes (6, 7) agencées sur ses extrémités (4, 5) sous forme de filaments spiralés (8, 9) et d'une douille de lampe (10) attribuée à ces filaments,
    caractérisé en ce que le dispositif de surveillance (1) présente au moins un équipement de mesure de température (15) attribué à un filament spiralé (8, 9) et un équipement d'interruption (11) électromécanique par lequel l'apport d'énergie à la lampe fluorescente (2) peut être interrompu lorsqu'est atteinte une valeur de température supérieure critique prédéfinie.
  2. Dispositif de surveillance selon la revendication 1,
    caractérisé en ce que la valeur de température critique est réglable.
  3. Dispositif de surveillance selon la revendication 1 ou 2,
    caractérisé en ce que l'équipement de mesure de température (15) et l'équipement d'interruption (11) électromécanique forment un monobloc.
  4. Dispositif de surveillance selon l'une des revendications précédentes,
    caractérisé en ce qu'un équipement de mesure de température (15) est attribué à chaque filament spiralé (8, 9) et l'apport d'énergie peut être interrompu par l'équipement d'interruption (11) dès lors qu'on constate, au moyen d'au moins un équipement de température (15), que la valeur de température critique a été atteinte.
  5. Dispositif de surveillance selon l'une des revendications précédentes,
    caractérisé en ce qu'un signal correspondant à la valeur de température mesurée peut être transmis de l'équipement de mesure de température (15) vers l'équipement d'interruption.
  6. Dispositif de surveillance selon la revendication 5,
    caractérisé en ce que le signal est un signal de coupure de tension.
  7. Dispositif de surveillance selon l'une des revendications 5 ou 6,
    caractérisé en ce que le signal peut être comparé par un équipement de comparaison (12) à un signal correspondant à la valeur de température critique prédéfinie, et l'équipement d'interruption (11) peut être actionné en fonction de la comparaison.
  8. Dispositif de surveillance selon l'une des revendications précédentes,
    caractérisé en ce qu'au moins l'équipement d'interruption (11) est agencé dans une douille de lampe (10).
  9. Dispositif de surveillance selon l'une des revendications précédentes,
    caractérisé en ce que la valeur de température critique peut être prédéfinie en fonction de paramètres de lampe tels que l'agencement et/ou le montage des filaments spiralés (8, 9), la distance des filaments spiralés au tube de lampe (3), l'épaisseur de la paroi du tube de lampe, et similaires.
  10. Dispositif de surveillance selon l'une des revendications précédentes,
    caractérisé en ce qu'au moins l'équipement d'interruption (11) est agencé dans un ballast (13).
  11. Dispositif de surveillance selon l'une des revendications précédentes,
    caractérisé en ce que l'équipement d'interruption (11) est conçu comme un équipement pour atmosphère explosive ou est inclus dans un équipement pour atmosphère explosive.
  12. Luminaires (14) comprenant au moins une lampe fluorescente (2) et un dispositif de surveillance (1) selon l'une des revendications précédentes.
EP07786401A 2006-08-03 2007-07-27 Dispositif de surveillance Not-in-force EP2047721B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL07786401T PL2047721T3 (pl) 2006-08-03 2007-07-27 Urządzenie monitorujące
SI200730991T SI2047721T1 (sl) 2006-08-03 2007-07-27 Nadzorna naprava

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006036293A DE102006036293A1 (de) 2006-08-03 2006-08-03 Überwachungsvorrichtung
PCT/EP2007/006690 WO2008014942A1 (fr) 2006-08-03 2007-07-27 Dispositif de surveillance

Publications (2)

Publication Number Publication Date
EP2047721A1 EP2047721A1 (fr) 2009-04-15
EP2047721B1 true EP2047721B1 (fr) 2012-06-27

Family

ID=38616051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07786401A Not-in-force EP2047721B1 (fr) 2006-08-03 2007-07-27 Dispositif de surveillance

Country Status (10)

Country Link
US (1) US8040076B2 (fr)
EP (1) EP2047721B1 (fr)
CN (1) CN101502182B (fr)
CA (1) CA2658726C (fr)
DE (1) DE102006036293A1 (fr)
ES (1) ES2390497T3 (fr)
NO (1) NO340471B1 (fr)
PL (1) PL2047721T3 (fr)
SI (1) SI2047721T1 (fr)
WO (1) WO2008014942A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2753762B1 (fr) * 2011-09-22 2017-02-15 Solar Bright Limited Balise de signalisation ou dispositif d'avertissement lumineux
DE102017215643B3 (de) 2017-09-06 2018-07-26 Siemens Schweiz Ag Dimmersystem und Verfahren zur Steuerung der Leistungsaufnahme einer an ein Dimmersystem anschliessbaren Last

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176187A (en) * 1953-09-29 1965-03-30 Basic Products Corp Safety system for fluorescent lamp ballasts
US3161746A (en) * 1963-01-21 1964-12-15 Gen Electric Fluorescent lamp starter including a glow switch contiguous and thermally connectred o a thermal switch
DE2608761A1 (de) * 1976-03-03 1977-09-08 Mutzhas Maximilian F Trennbares elektrisches geraet - vorzugsweise als leuchte ausgebildet - fuer explosionsgefaehrdete raeume
US4455509A (en) * 1983-05-16 1984-06-19 Crum Stephen T Intrinsically safe lighting system
DE3710275A1 (de) * 1987-03-28 1988-10-06 Ceag Licht & Strom Anordnung zum starten und betrieb einer leuchtstofflampe
AU2868289A (en) * 1988-01-28 1989-08-03 Abb Ceag Licht-Und Stromversorgungstechnik Gmbh Explosion proof discharge lamp
US5604409A (en) * 1992-02-14 1997-02-18 Fisher; Dalziel L. Electronic lighting controller
US5594304A (en) * 1995-07-31 1997-01-14 Woodhead Industries, Inc. Portable fluorescent lamp for use in special applications
US6051940A (en) * 1998-04-30 2000-04-18 Magnetek, Inc. Safety control circuit for detecting the removal of lamps from a ballast and reducing the through-lamp leakage currents
DE10108138A1 (de) * 2001-02-20 2002-08-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schutzschaltung für eine Leuchstofflampe
US6888324B1 (en) * 2002-05-16 2005-05-03 Balboa Instruments, Inc. Ozone generator having a mercury lamp with a filament temperature detective circuit
US7368883B2 (en) * 2006-04-12 2008-05-06 Power Elab Ltd. Apparatus for end-of-life detection of fluorescent lamps
DE102006036292A1 (de) * 2006-08-03 2008-02-14 Cooper Crouse-Hinds Gmbh Vorrichtung und Verfahren zur Überwachung wenigstens einer Leuchtstofflampe

Also Published As

Publication number Publication date
ES2390497T3 (es) 2012-11-13
PL2047721T3 (pl) 2012-10-31
US20090261733A1 (en) 2009-10-22
WO2008014942A1 (fr) 2008-02-07
CA2658726A1 (fr) 2008-02-07
SI2047721T1 (sl) 2012-09-28
NO20090427L (no) 2009-02-16
US8040076B2 (en) 2011-10-18
NO340471B1 (no) 2017-04-24
CN101502182A (zh) 2009-08-05
EP2047721A1 (fr) 2009-04-15
DE102006036293A1 (de) 2008-02-14
CA2658726C (fr) 2017-11-07
CN101502182B (zh) 2013-04-24

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