EP1429072B1 - Appareil d'éclairage antidéflagrant - Google Patents

Appareil d'éclairage antidéflagrant Download PDF

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Publication number
EP1429072B1
EP1429072B1 EP03026406A EP03026406A EP1429072B1 EP 1429072 B1 EP1429072 B1 EP 1429072B1 EP 03026406 A EP03026406 A EP 03026406A EP 03026406 A EP03026406 A EP 03026406A EP 1429072 B1 EP1429072 B1 EP 1429072B1
Authority
EP
European Patent Office
Prior art keywords
heating
heating means
lamp
battery
explosion
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.)
Expired - Lifetime
Application number
EP03026406A
Other languages
German (de)
English (en)
Other versions
EP1429072A2 (fr
EP1429072A3 (fr
Inventor
Ralph Rohlfing
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.)
Aqua Signal AG
Original Assignee
Aqua Signal AG
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 Aqua Signal AG filed Critical Aqua Signal AG
Publication of EP1429072A2 publication Critical patent/EP1429072A2/fr
Publication of EP1429072A3 publication Critical patent/EP1429072A3/fr
Application granted granted Critical
Publication of EP1429072B1 publication Critical patent/EP1429072B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/022—Emergency lighting devices
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • 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
    • F21V25/12—Flameproof or explosion-proof arrangements
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/20—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by toggle-action levers

Definitions

  • the invention relates to an explosion-proof lamp with fluorescent bulbs and with a battery as an emergency power source.
  • Explosion-proof luminaires are used in atmospheres containing flammable gases. According to German and European standards, the explosion protection of a luminaire is designated in various ways, e.g. with the indication "Ex” (explosion-proof), “Ex e” (explosion protection with increased safety) and “Ex d” (explosion protection with flameproof enclosure).
  • the invention preferably relates to a luminaire with an explosion protection with increased safety.
  • the subject of the invention are also luminaires with an explosion protection of a different kind.
  • Fluorescent lamps as illuminants are well suited for use in explosion-proof luminaires, since they heat up only slightly.
  • a disadvantage of a fluorescent lamp is the dependence on a minimum temperature. In unfavorable climatic conditions with heavy frost, it can happen that the fluorescent lamps no longer function due to the internal, temperature-dependent physical processes or at least no longer ignite when switched on. The result is a total failure of the lamp.
  • luminaires are equipped with a battery as emergency power source.
  • the battery is located inside the lamp. In normal operation, the luminaire is operated via an external mains voltage. If they fail, the battery is switched on to supply the lamps. At low temperatures, the performance of the battery decreases considerably. The function as an emergency power source is then at risk.
  • DE-A-101 56 168 is an explosion-proof fluorescent light fitting with a battery for emergency operation described. At low temperatures, the function of the light fitting is not guaranteed.
  • a luminaire with a fluorescent lamp for operation at low temperatures is disclosed.
  • the luminaire has an on demand off and on additional heating element to ignite the fluorescent lamp even at low temperatures.
  • An emergency operation in case of power failure is not provided.
  • Object of the present invention is to provide a luminaire of the type mentioned, which is functional even at extremely low temperatures.
  • the lamp according to the invention is characterized by heating means at least for heating the lamps and by an electrical circuit of the lamp such that the battery only supplies the lighting means, but not the heating means with electrical power in case of power failure.
  • the heating means are advantageously switched on and operated together with the lighting means. However, it is also possible a time advance of the heating means for heating a part of the lamp before switching on the lamps.
  • the invention extends the temperature-dependent working range of the luminaire drastically. In the event of a power failure, heated batteries will remain functional despite the lowest outside temperatures (the aim is to ensure safety down to -40 ° C). It is also possible to supply the heating means by the battery. However, this shortens the battery life.
  • an electrical circuit of the lamp is such that the battery does not supply the heating means with electrical power.
  • thermosensitive components such as electronic components may be present. These heating means can be assigned.
  • the lamp has a housing with a bottom for receiving electronic components and a translucent lid.
  • the bottom is deep-drawn and trough-shaped, as well as the lid.
  • the latter is peripherally sealed against the ground and connected to the ground by suitable holding and / or locking means.
  • the heating means are preferably arranged between a wall of the housing and the component to be heated. This results in a relatively uniform temperature profile within the component to be heated.
  • electrical heating coils are provided as heating means. These are in particular certified as explosion-proof, if possible in the same way as the luminaire otherwise.
  • the heating means are temperature controlled.
  • a sensor can measure the temperature of the heating medium itself or the internal temperature of the Determine the luminaire and switch off the heating medium after reaching an upper limit, eg 20 ° C, and switch it on again after reaching a lower limit, eg 10 ° C.
  • a luminaire 10 is intended as an explosion-proof emergency luminaire (type Ex d) for use on oil rigs.
  • Lights of this type are basically known, for example, for ships.
  • the emergency function consists in the property of maintaining a lighting despite failure of a mains voltage.
  • a battery 11 is arranged as an emergency power source in the lamp 10. If the mains voltage fails, the luminaire should continue to light up for up to three hours, even with reduced luminosity.
  • the light 10 shown here builds on this known light.
  • the lamp 10 consists essentially of a housing with bottom 12 and cover 13, two (not shown here) fluorescent lamps, the battery 11 and other mechanical, electrical and electronic components.
  • the lamp 10 is about 70 cm long, 12 cm wide and 10 cm high. About 40-50% of the height is taken from the ground 12. The remainder of the height results from the dimensions of the lid 13.
  • a seal 15 is used, which comes to a bottom flange 16 to the plant.
  • hinges 18, 19, 20 are provided for the articulated connection of the bottom 12 and cover 13.
  • pivotable hooks 22 are provided on both longitudinal sides 17, 21, which press-connect the cover 13 to the base 12 in the area of the circumferential seal 15. Hooks 22 in the closed position are in Fig. 4 good to see.
  • the opened lid 13 with open hooks 22 is in Fig. 6 shown.
  • the battery 11 which extends near the profile side 26 and near the tread 25 in the longitudinal direction of the lamp 10.
  • the battery 11 is seated at its ends in holders 28, 29. Approximately half the length of the battery 11, a fork-shaped support 30 is provided. Holder 28, 29 and support 30 are mounted on the profile bottom 25.
  • a central support 31 is provided parallel to the support plate 24.
  • the central support 31 extends parallel to the bottom wall 23 and just above the peripheral bottom flange 16.
  • sockets 32, 33 for two fluorescent lamps (not shown) and two push-buttons 34, 35 are arranged on the center support 31. These switch the lamp 10 when lifting the lid 13 de-energized.
  • the push-buttons 34, 35 are each arranged between the sockets 32, 33 and in the vicinity of end faces 36, 37 of the cover 13.
  • An upper wall 38 of the lid 13 has on the inside downwardly directed sensing pins 39 which act on the push-button 34 when closing the lid 13 and thus enable a switch from "de-energized" in "energized”.
  • the luminaire 10 shown here is intended for use under extreme climatic conditions, namely particularly low temperatures.
  • the aim is temperatures up to - 40 ° C.
  • the lamp 10 has heating means arranged in the housing. Specifically, these are heating coils 40, 41 and heating conductors 42, 43.
  • the heating means are designed and certified as explosion-proof in the same way as the luminaire (without heating means).
  • the heating coils 40, 41 are immediately above and below the central support 31 (without a distance to this) and held on the same. Both heating coils 40, 41 are meandered, i. with successively always the direction of changing radii of curvature. In this case, contact points 44 are formed between an output of a curvature and an input of the next but one curvature. In the region of the contact points 44, the heating coils 40, 41 are fixed on the middle support 31 via suitable holding means, clamps or the like. The radii of curvature are about 1.5 cm (inner radius).
  • the heating coils 40, 41 and heating conductors 42, 43 are completely insulated so that contacts with neighboring components (electrically) are harmless.
  • the heating coils 40, 41 extend approximately over the length and the effective width of the fluorescent lamps, see in particular Fig. 3 . 5 and 6 ,
  • the upper heating coil 40 is located directly on the fluorescent lamps or has opposite to these only a small distance. Due to this and relative to the housing centered arrangement, the interior of the housing by the heating coils 40, 41 is effectively and quickly warmed up or can be maintained at a significantly higher temperature in relation to the outside temperature. At the same time, the fluorescent lamps are particularly warm.
  • the heating conductors 42 are arranged in the bottom 12, namely completely encircling and on the profile bottom 25, in the region of the transition between the profile bottom 25 and the profile sides 26, 27. At the same time, the heating element 42 is located with a large part of its length on the battery 11 or facing this only a small distance. This results in a direct heat effect on the battery 11 and arranged in the region of the support plate 24 electrical or electronic components.
  • the heating means are always connected to the mains voltage.
  • a temperature controller (not shown) is provided, which optionally separates the heating means in dependence on an internal temperature of the lamp from the mains voltage and switches on again after reaching a lower limit.
  • Preferred is an internal temperature of plus 10 ° to plus 20 ° C (lower and upper limit).
  • the heating means running along when the mains voltage is applied also ensure the operation of the lamps at very low outside temperatures.
  • lights of the type described are turned on once and turned off only after reaching the bulb life to replace the bulbs.
  • a time advance of the heating means may be provided. But it is also possible a synchronous switching on the heating means and lamps. If the bulbs do not want to ignite due to low outside temperatures (fluorescent lamps), the desired ignition will be activated at the latest after the lamp has been appropriately heated.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (6)

  1. Lampe (10) protégée contre les explosions, qui présente des moyens d'éclairage à substance lumineuse et un accumulateur (11) qui sert de source de courant de secours, caractérisée par des moyens de chauffage (40, 41, 42, 43) qui permettent de chauffer au moins les moyens d'éclairage et un circuit électrique de la lampe qui permet, en cas de panne du réseau, que l'accumulateur (11) alimente en puissance électrique uniquement les moyens d'éclairage mais pas les moyens de chauffage.
  2. Lampe selon la revendication 1, caractérisée en ce que les moyens dé chauffage (40, 41, 42, 43) sont associés aux moyens d'éclairage et à l'accumulateur (11).
  3. Lampe selon les revendications 1 ou 2, caractérisée en ce que les moyens de chauffage (40, 41, 42, 43) sont également associés à des composants électroniques.
  4. Lampe selon la revendication 1 ou l'une des autres revendications, caractérisée en ce que les moyens de chauffage (40, 41, 42, 43) sont disposés entre la paroi du boîtier et le composant à chauffer.
  5. Lampe selon la revendication 1 ou l'une des autres revendications, caractérisée en ce que des boucles de chauffage électrique (40, 41) sont prévues comme moyens de chauffage.
  6. Lampe selon la revendication 1 ou l'une des autres revendications, caractérisée en ce que les moyens de chauffage (40, 41) sont asservis à la température.
EP03026406A 2002-12-10 2003-11-19 Appareil d'éclairage antidéflagrant Expired - Lifetime EP1429072B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20219149U DE20219149U1 (de) 2002-12-10 2002-12-10 Explosionsgeschützte Leuchte
DE20219149U 2002-12-10

Publications (3)

Publication Number Publication Date
EP1429072A2 EP1429072A2 (fr) 2004-06-16
EP1429072A3 EP1429072A3 (fr) 2005-10-12
EP1429072B1 true EP1429072B1 (fr) 2008-07-02

Family

ID=7977837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026406A Expired - Lifetime EP1429072B1 (fr) 2002-12-10 2003-11-19 Appareil d'éclairage antidéflagrant

Country Status (3)

Country Link
EP (1) EP1429072B1 (fr)
AT (1) ATE399960T1 (fr)
DE (2) DE20219149U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20040113U1 (it) * 2004-03-18 2004-06-18 S I D E S P A Apparecchio di illuminazione per installazione fissa
DE202012100509U1 (de) * 2012-02-15 2013-05-17 Zumtobel Lighting Gmbh Notleuchte mit Akkumulator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH325651A (de) * 1954-08-14 1957-11-15 Belmag Zuerich Beleuchtungs U Elektrischer Strassenbeleuchtungskörper mit in einem geschlossenen Gehäuse angeordneten Leuchtstoffröhren
DE3525349A1 (de) * 1985-07-16 1987-01-22 Felix Wagner Leuchte zum betrieb bei tiefen temperaturen
FR2787242A1 (fr) * 1998-12-15 2000-06-16 Leseur Maurice Dispositif de rechauffage des batteries d'accumulateurs d'electricite
DE10021510A1 (de) * 2000-05-03 2001-11-08 Mannesmann Vdo Ag Beleuchtungsvorrichtung
GB2369256B (en) * 2000-11-18 2002-11-20 Hubbell Lighting Ltd An electrical apparatus a light fitting and methods of breaking power supply therein

Also Published As

Publication number Publication date
DE50310061D1 (de) 2008-08-14
DE20219149U1 (de) 2003-03-20
ATE399960T1 (de) 2008-07-15
EP1429072A2 (fr) 2004-06-16
EP1429072A3 (fr) 2005-10-12

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