EP1429072A2 - Explosion-proof light fitting - Google Patents

Explosion-proof light fitting Download PDF

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Publication number
EP1429072A2
EP1429072A2 EP03026406A EP03026406A EP1429072A2 EP 1429072 A2 EP1429072 A2 EP 1429072A2 EP 03026406 A EP03026406 A EP 03026406A EP 03026406 A EP03026406 A EP 03026406A EP 1429072 A2 EP1429072 A2 EP 1429072A2
Authority
EP
European Patent Office
Prior art keywords
lamp
battery
heating means
heating
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.)
Granted
Application number
EP03026406A
Other languages
German (de)
French (fr)
Other versions
EP1429072A3 (en
EP1429072B1 (en
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
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Filing date
Publication date
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Publication of EP1429072A2 publication Critical patent/EP1429072A2/en
Publication of EP1429072A3 publication Critical patent/EP1429072A3/en
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Publication of EP1429072B1 publication Critical patent/EP1429072B1/en
Anticipated expiration legal-status Critical
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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 lamps and with a battery as an emergency power source.
  • Explosion-proof lights are used in environments with flammable gases. According to German and European standards, the explosion protection of a luminaire is described in various ways, for example with the information “Ex” (explosion-proof), “Ex e” (explosion protection with increased safety) and “Ex d” (explosion protection with pressure-resistant encapsulation).
  • the invention preferably relates to a luminaire with explosion protection with increased security.
  • the invention also relates to lights with a different type of explosion protection.
  • Fluorescent lamps as illuminants are well suited for use in explosion-proof luminaires because they only heat up slightly.
  • a disadvantage of a fluorescent lamp is that it depends on a minimum temperature. In unfavorable climatic conditions with strong frost, it can happen that the fluorescent lamps no longer function due to the temperature-dependent physical processes taking place inside, or at least no longer ignite when switched on. The result is a total failure of the lamp.
  • luminaires with a rechargeable battery are an emergency power source equipped.
  • the battery is located inside the lamp. In normal operation the Luminaire operated via an external mains voltage. If the battery fails, the battery will run out switched on for the supply of the lamps. At low temperatures, the Performance of the battery strongly. The function as an emergency power source is then endangered.
  • the object of the present invention is to provide a lamp of the type mentioned create that is functional even at exceptionally low temperatures.
  • the lamp according to the invention is characterized by heating means at least Warming up the lamps or the battery.
  • the heating means are advantageously switched on and operated together with the lamps. But one is also possible Advance of time of the heating means for heating part of the lamp before Switch on the illuminant.
  • the invention makes the temperature-dependent Working area of the lamp drastically expanded. In the event of a power failure, warm batteries remain even in spite of the lowest outside temperatures (the aim is security down to - 40 ° C) functioning.
  • the heating medium can also be supplied by the battery. However, this shortens the battery life. Therefore, one is preferred electrical switching of the lamp in such a way that the battery does not use the heating medium electrical power.
  • the lamp temperature-sensitive components such as electronic components.
  • heating means can be assigned to these.
  • the lamp has a housing with a base for receiving electronic components and a translucent lid.
  • the floor is deep-drawn and tub-like trained, as well as the lid. The latter is all around the floor sealed and with the floor by suitable holding and / or locking means connected.
  • the heating means are preferably 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 preferably provided as the heating means. These are especially certified as explosion-proof, if possible in the same way as that Incidentally, lamp.
  • the heating means are temperature controlled.
  • a sensor can measure the temperature of the heating medium itself or the inside temperature of the Determine the luminaire and after reaching an upper limit, e.g. 20 ° C, the heating medium switch off and after reaching a lower limit, e.g. 10 ° C, again turn on.
  • a lamp 10 is for use as an explosion-proof emergency lamp (type Ex d) provided on drilling rigs. Luminaires of this type are generally known for example also for ships. The emergency function consists of the property of Maintenance of lighting despite a power failure. To this end a battery 11 is arranged in the lamp 10 as an emergency power source. If the Mains voltage should the lamp up to three hours - even with reduced luminosity - continue to shine. The lamp 10 shown here is based on this known lamp.
  • the lamp 10 essentially consists of a housing with a base 12 and a cover 13, two (not shown here) fluorescent lamps, the battery 11 and others 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 from the floor 12 ingested. The rest of the height results from the dimensions of the cover 13.
  • a seal 15 is inserted, which on a Bottom flange 16 comes to rest.
  • Hinges 18, 19, 20 for the articulated connection of base 12 and cover 13 intended.
  • pivotable hooks 22 on both longitudinal sides 17, 21 provided the cover 13 with the bottom 12 in the area of the circumferential seal 15 press connection. Hooks 22 in the closed position are clearly visible in FIG. 4.
  • the Opened lid 13 with open hook 22 is shown in Fig. 6.
  • a support plate 24 parallel to this, just above a floor wall 23 arranged.
  • This has an essentially U-shaped (open to the cover 13) Cross-sectional profile with a profile base 25 and profile sides 26, 27.
  • the support plate 24 Components arranged, in particular the battery 11, which is close to the profile side 26 and near the profile base 25 extends in the longitudinal direction of the lamp 10.
  • the battery 11 sits at its ends in holders 28, 29. Approximately half the length of the battery 11 is one fork-shaped support 30 is provided. Brackets 28, 29 and support 30 are on the profile floor 25 mounted.
  • a central support 31 parallel to the support plate 24 provided.
  • the central support 31 extends parallel to the bottom wall 23 and just under above the circumferential bottom flange 16.
  • the Key switches 34, 35 are located between the frames 32, 33 and in the vicinity of End faces 36, 37 of the lid 13 are arranged.
  • An upper wall 38 of the cover 13 has on the inside downward-pointing styli 39, the key switch 34 35 when closing of the cover 13 and thus switch from "de-energized" to "energized” enable.
  • the lamp 10 shown here is for use under extreme climatic conditions Conditions, namely particularly low temperatures. Are aimed for Temperatures down to - 40 ° C. To enable operation even under these conditions the lamp 10 has heating means arranged in the housing. Specifically, it is about Heating coils 40, 41 and heating conductors 42, 43.
  • the heating means are in the same way as the luminaire (without heating medium) is designed and certified as explosion-proof.
  • the heating coils 40, 41 are immediately above and below the central support 31 (without distance to it) and held on it. Both heating coils 40, 41 are meandering, i.e. with successively always changing direction Radii of curvature. In this case, contact points 44 are formed between an exit a curvature and an entrance to the next but one curvature. In the field of Points of contact 44 are the heating coils 40, 41 on the center support 31 suitable holding means, clips or the like fixed. 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 are harmless with neighboring components (electrical).
  • the heating coils 40, 41 extend approximately over the length and the effective width of fluorescent lamps, see in particular FIGS. 3, 5 and 6.
  • the upper heating coil 40 lies directly on the fluorescent lamps or shows only a small amount compared to them Distance on. Because of this and relative to the housing central arrangement Interior of the housing through the heating coils 40, 41 effectively and quickly warmed up or can be at a significantly higher temperature in relation to Outside temperature can be kept. At the same time, the fluorescent lamps are special warmed.
  • the heating conductors 42 are arranged in the base 12, namely completely revolving and on the profile floor 25, in the area of the transition between the profile floor 25 and the Profile pages 26, 27. At the same time, the heating conductor 42 lies with a large part of its length Battery 11 on or is only a short distance from it. This gives a direct heat effect on the battery 11 and in the area of the support plate 24 arranged electrical or electronic components.
  • the heating means are always connected to the mains voltage.
  • a temperature controller (not shown) is provided, which the heating means in Depending on an internal temperature of the lamp, if necessary, on the Mains voltage disconnects and switches on again after reaching a lower limit.
  • the heating means are also de-energized. Only that Illuminants are supplied from the battery 11. Illuminants and battery 11 show Transition to emergency operation at a favorable operating temperature. Even with very a low temperature is therefore not to be feared as a failure. An emergency operation over the desired period of 3 hours is possible.
  • the heating means that run with the mains voltage also ensure operation the illuminant at very low outside temperatures.
  • lights of the type described are switched on once and only then after reaching the lamp life to replace the lamp off.
  • For switching on for the first time after inserting new lamps can be provided a time advance of the heating means.

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  • 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)

Abstract

An explosion-proof fluorescent lamp (10) comprises a battery (11) for emergency current supply and a heating means to warm the lamp or the battery

Description

Die Erfindung betrifft eine explosionsgeschützte Leuchte mit Leuchtstoff-Leuchtmitteln und mit einem Akku als Notstromquelle.The invention relates to an explosion-proof lamp with fluorescent lamps and with a battery as an emergency power source.

Explosionsgeschützte Leuchten werden in entzündbare Gase aufweisenden Umgebungen verwendet. Nach deutschen und europäischen Normen wird der Explosionsschutz einer Leuchte auf verschiedene Weise bezeichnet, z.B. mit der Angabe "Ex" (explosionsgeschützt), "Ex e" (Explosionsschutz mit erhöhter Sicherheit) und "Ex d" (Explosionsschutz mit druckfester Kapselung). Die Erfindung betrifft vorzugsweise eine Leuchte mit einem Explosionsschutz mit erhöhter Sicherheit. Gegenstand der Erfindung sind aber auch Leuchten mit einem Explosionsschutz anderer Art.
Leuchtstoff-Lampen als Leuchtmittel sind für den Einsatz in explosionsgeschützten Leuchten gut geeignet, da sie sich nur geringfügig erwärmen. Ein Nachteil einer Leuchtstofflampe besteht in der Abhängigkeit von einer Mindesttemperatur. Bei ungünstigen klimatischen Bedingungen mit starkem Frost kann es passieren, dass die Leuchtstofflampen auf Grund der im Inneren ablaufenden, temperaturabhängigen physikalischen Prozesse nicht mehr funktionieren oder zumindest nicht mehr zünden beim Einschalten. Die Folge ist ein Totalausfall der Leuchte.Explosion-proof lights are used in environments with flammable gases. According to German and European standards, the explosion protection of a luminaire is described in various ways, for example with the information "Ex" (explosion-proof), "Ex e" (explosion protection with increased safety) and "Ex d" (explosion protection with pressure-resistant encapsulation). The invention preferably relates to a luminaire with explosion protection with increased security. The invention also relates to lights with a different type of explosion protection.
Fluorescent lamps as illuminants are well suited for use in explosion-proof luminaires because they only heat up slightly. A disadvantage of a fluorescent lamp is that it depends on a minimum temperature. In unfavorable climatic conditions with strong frost, it can happen that the fluorescent lamps no longer function due to the temperature-dependent physical processes taking place inside, or at least no longer ignite when switched on. The result is a total failure of the lamp.

Für bestimmte Anwendungen sind Leuchten mit einem Akku als Notstromquelle ausgerüstet. Der Akku ist im Inneren der Leuchte angeordnet. Im Normalbetrieb wird die Leuchte über eine externe Netzspannung betrieben. Bei Ausfall derselben wird der Akku für die Versorgung der Leuchtmittel zugeschaltet. Bei tiefen Temperaturen lässt die Leistungsfähigkeit des Akkus stark nach. Die Funktion als Notstromquelle ist dann gefährdet.For certain applications, luminaires with a rechargeable battery are an emergency power source equipped. The battery is located inside the lamp. In normal operation the Luminaire operated via an external mains voltage. If the battery fails, the battery will run out switched on for the supply of the lamps. At low temperatures, the Performance of the battery strongly. The function as an emergency power source is then endangered.

Aufgabe der vorliegenden Erfindung ist es, eine Leuchte der eingangs genannten Art zu schaffen, die auch bei außergewöhnlich tiefen Temperaturen funktionsfähig ist.The object of the present invention is to provide a lamp of the type mentioned create that is functional even at exceptionally low temperatures.

Die erfindungsgemäße Leuchte ist gekennzeichnet durch Heizmittel zumindest zum Erwärmen der Leuchtmittel oder des Akkus. Die Heizmittel werden vorteilhafterweise zusammen mit den Leuchtmitteln eingeschaltet und betrieben. Möglich ist aber auch ein zeitlicher Vorlauf der Heizmittel zum Erwärmen eines Teils der Leuchte vor dem Einschalten der Leuchtmittel. Durch die Erfindung wird der temperaturabhängige Arbeitsbereich der Leuchte drastisch erweitert. Bei Netzausfall bleiben erwärmte Akkus auch trotz niedrigster Außentemperaturen (angestrebt ist eine Sicherheit bis - 40°C) funktionsfähig. Möglich ist auch eine Versorgung der Heizmittel durch den Akku. Allerdings verkürzt sich dadurch die Laufzeit des Akkus. Bevorzugt ist deshalb eine elektrische Schaltung der Leuchte derart, dass der Akku nicht die Heizmittel mit elektrischer Leistung versorgt.The lamp according to the invention is characterized by heating means at least Warming up the lamps or the battery. The heating means are advantageously switched on and operated together with the lamps. But one is also possible Advance of time of the heating means for heating part of the lamp before Switch on the illuminant. The invention makes the temperature-dependent Working area of the lamp drastically expanded. In the event of a power failure, warm batteries remain even in spite of the lowest outside temperatures (the aim is security down to - 40 ° C) functioning. The heating medium can also be supplied by the battery. However, this shortens the battery life. Therefore, one is preferred electrical switching of the lamp in such a way that the battery does not use the heating medium electrical power.

Neben den Leuchtstoff-Leuchtmitteln bzw. -lampen können innerhalb der Leuchte weitere temperaturempfindliche Bauteile, etwa elektronische Bauteile vorhanden sein. Auch diesen können Heizmittel zugeordnet sein.In addition to the fluorescent lamps or lamps, there can be more inside the lamp temperature-sensitive components, such as electronic components. Also heating means can be assigned to these.

Die Leuchte weist ein Gehäuse mit einem Boden zur Aufnahme elektronischer Bauteile sowie einen durchscheinenden Deckel auf. Der Boden ist tiefgezogen und wannenartig ausgebildet, ebenso der Deckel. Letzterer ist gegenüber dem Boden umlaufend abgedichtet und mit dem Boden durch geeignete Halte- und/oder Arretiermittel verbunden. Die Heizmittel sind vorzugsweise zwischen einer Wandung des Gehäuses und dem zu wärmenden Bauteil angeordnet. Dadurch ergibt sich ein relativ gleichmäßiges Temperaturprofil innerhalb des zu wärmenden Bauteils.The lamp has a housing with a base for receiving electronic components and a translucent lid. The floor is deep-drawn and tub-like trained, as well as the lid. The latter is all around the floor sealed and with the floor by suitable holding and / or locking means connected. The heating means are preferably 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.

Vorzugsweise sind als Heizmittel elektrische Heizschlangen vorgesehen. Diese sind insbesondere als explosionsgeschützt zertifiziert, möglichst in der selben Weise wie die Leuchte im Übrigen.Electrical heating coils are preferably provided as the heating means. These are especially certified as explosion-proof, if possible in the same way as that Incidentally, lamp.

Nach einem weiteren Gedanken der Erfindung sind die Heizmittel temperaturgesteuert. Ein Fühler kann die Temperatur der Heizmittel selbst oder die Innentemperatur der Leuchte ermitteln und nach Erreichen eines oberen Grenzwerts, z.B. 20°C, die Heizmittel abschalten und diese nach Erreichen eines unteren Grenzwerts, z.B. 10°C, wieder einschalten.According to a further concept of the invention, the heating means are temperature controlled. A sensor can measure the temperature of the heating medium itself or the inside temperature of the Determine the luminaire and after reaching an upper limit, e.g. 20 ° C, the heating medium switch off and after reaching a lower limit, e.g. 10 ° C, again turn on.

Weitere Merkmale der Erfindung ergeben sich aus den Ansprüchen und aus der Beschreibung im Übrigen. Vorteilhafte Ausführungsbeispiele der Erfindung werden nachfolgend anhand von Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine teilweise geschnittene Seitenansicht einer erfindungsgemäßen Leuchte,
Fig. 2
einen Längsschnitt durch die Leuchte gemäß Fig. 1, zur Darstellung eines Bodens mit darin angeordneten Teilen,
Fig. 3
eine Draufsicht auf die Leuchte gemäß Fig. 1 (ohne eingesetzte Leuchtmittel),
Fig. 4
einen Querschnitt durch die Leuchte entlang der (abgewinkelten) Schnittlinie A-A in Fig. 3,
Fig. 5
einen Querschnitt durch die Leuchte entlang der Schnittlinie B-B in Fig. 2,
Fig. 6
einen Querschnitt durch die Leuchte entlang der Schnittlinie C-C in Fig. 1.
Further features of the invention emerge from the claims and from the description for the rest. Advantageous exemplary embodiments of the invention are explained in more detail below with reference to drawings. Show it:
Fig. 1
a partially sectioned side view of a lamp according to the invention,
Fig. 2
2 shows a longitudinal section through the lamp according to FIG. 1, to show a floor with parts arranged therein,
Fig. 3
2 shows a plan view of the lamp according to FIG. 1 (without the lamps used),
Fig. 4
3 shows a cross section through the lamp along the (angled) section line AA in FIG. 3,
Fig. 5
3 shows a cross section through the lamp along the section line BB in FIG. 2,
Fig. 6
a cross section through the lamp along the section line CC in Fig. 1st

Eine Leuchte 10 ist als explosionsgeschützte Notleuchte (Typ Ex d) für die Verwendung auf Bohrinseln vorgesehen. Leuchten dieses Typs sind grundsätzlich bekannt, beispielsweise auch für Schiffe. Die Notfunktion besteht in der Eigenschaft der Aufrechterhaltung einer Beleuchtung trotz Ausfall einer Netzspannung. Zu diesem Zweck ist in der Leuchte 10 ein Akku 11 als Notstromquelle angeordnet. Beim Ausfall der Netzspannung soll die Leuchte bis zu drei Stunden - auch mit verminderter Leuchtkraft - weiter leuchten. Die hier dargestellte Leuchte 10 baut auf dieser bekannten Leuchte auf.A lamp 10 is for use as an explosion-proof emergency lamp (type Ex d) provided on drilling rigs. Luminaires of this type are generally known for example also for ships. The emergency function consists of the property of Maintenance of lighting despite a power failure. To this end a battery 11 is arranged in the lamp 10 as an emergency power source. If the Mains voltage should the lamp up to three hours - even with reduced luminosity - continue to shine. The lamp 10 shown here is based on this known lamp.

Die Leuchte 10 besteht im Wesentlichen aus einem Gehäuse mit Boden 12 und Deckel 13, zwei (hier nicht gezeigten) Leuchtstofflampen, dem Akku 11 und weiteren mechanischen, elektrischen und elektronischen Komponenten. Die Leuchte 10 ist etwa 70 cm lang, 12 cm breit und 10 cm hoch. Etwa 40-50% der Höhe werden vom Boden 12 eingenommen. Der Rest der Höhe ergibt sich durch die Abmessungen des Deckels 13. The lamp 10 essentially consists of a housing with a base 12 and a cover 13, two (not shown here) fluorescent lamps, the battery 11 and others 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 from the floor 12 ingested. The rest of the height results from the dimensions of the cover 13.

In ein umlaufendes Deckelflanschprofil 14 ist eine Dichtung 15 eingesetzt, die an einem Bodenflansch 16 zur Anlage kommt. An einer Längsseite 17 der Leuchte 10 sind Scharniere 18, 19, 20 zur gelenkigen Verbindung von Boden 12 und Deckel 13 vorgesehen. Außerdem sind an beiden Längsseiten 17, 21 schwenkbare Haken 22 vorgesehen, die den Deckel 13 mit dem Boden 12 im Bereich der umlaufenden Dichtung 15 pressend verbinden. Haken 22 in Schließstellung sind in Fig. 4 gut erkennbar. Der geöffnete Deckel 13 mit geöffneten Haken 22 ist in Fig. 6 gezeigt.In a circumferential cover flange profile 14, a seal 15 is inserted, which on a Bottom flange 16 comes to rest. On a long side 17 of the lamp 10 are Hinges 18, 19, 20 for the articulated connection of base 12 and cover 13 intended. In addition, there are pivotable hooks 22 on both longitudinal sides 17, 21 provided the cover 13 with the bottom 12 in the area of the circumferential seal 15 press connection. Hooks 22 in the closed position are clearly visible in FIG. 4. The Opened lid 13 with open hook 22 is shown in Fig. 6.

Im Boden 12 ist knapp oberhalb einer Bodenwand 23 ein hierzu paralleles Tragblech 24 angeordnet. Dieses weist ein im Wesentlichen U-förmiges (zum Deckel 13 offenes) Querschnittsprofil auf mit einem Profilboden 25 und Profilseiten 26, 27.In the floor 12 there is a support plate 24 parallel to this, just above a floor wall 23 arranged. This has an essentially U-shaped (open to the cover 13) Cross-sectional profile with a profile base 25 and profile sides 26, 27.

Auf dem Tragblech 24 sind verschiedene mechanische, elektrische und elektronische Komponenten angeordnet, insbesondere der Akku 11, welcher sich nahe der Profilseite 26 und nahe des Profilbodens 25 in Längsrichtung der Leuchte 10 erstreckt. Der Akku 11 sitzt an seinen Enden in Haltern 28, 29. Etwa auf halber Länge des Akkus 11 ist eine gabelförmige Stütze 30 vorgesehen. Halter 28, 29 und Stütze 30 sind auf dem Profilboden 25 montiert.Various mechanical, electrical and electronic are on the support plate 24 Components arranged, in particular the battery 11, which is close to the profile side 26 and near the profile base 25 extends in the longitudinal direction of the lamp 10. The battery 11 sits at its ends in holders 28, 29. Approximately half the length of the battery 11 is one fork-shaped support 30 is provided. Brackets 28, 29 and support 30 are on the profile floor 25 mounted.

Etwa auf der Höhe des Bodenflansches 16 ist ein Mittelträger 31 parallel zum Tragblech 24 vorgesehen. Der Mittelträger 31 erstreckt sich parallel zur Bodenwand 23 und knapp oberhalb des umlaufenden Bodenflansches 16. Auf dem Mittelträger 31 sind Fassungen 32, 33 für zwei Leuchtstofflampen (nicht gezeigt) sowie zwei Tastschalter 34, 35 angeordnet. Diese schalten die Leuchte 10 beim Anheben des Deckels 13 stromlos. Die Tastschalter 34, 35 sind jeweils zwischen den Fassungen 32, 33 und in der Nähe von Stirnseiten 36, 37 des Deckels 13 angeordnet. Eine Oberwand 38 des Deckels 13 weist innenseitig abwärtsgerichtete Taststifte 39 auf, die die Tastschalter 34 35 beim Schließen des Deckels 13 beaufschlagen und so eine Umschaltung von "stromlos" in "stromführend" ermöglichen.Approximately at the level of the base flange 16 is a central support 31 parallel to the support plate 24 provided. The central support 31 extends parallel to the bottom wall 23 and just under above the circumferential bottom flange 16. On the central support 31 are sockets 32, 33 for two fluorescent lamps (not shown) and two pushbutton switches 34, 35 arranged. These switch off the lamp 10 when the cover 13 is lifted. The Key switches 34, 35 are located between the frames 32, 33 and in the vicinity of End faces 36, 37 of the lid 13 are arranged. An upper wall 38 of the cover 13 has on the inside downward-pointing styli 39, the key switch 34 35 when closing of the cover 13 and thus switch from "de-energized" to "energized" enable.

Die hier gezeigte Leuchte 10 ist für die Verwendung unter extremen klimatischen Bedingungen, nämlich besonders tiefen Temperaturen vorgesehen. Angestrebt sind Temperaturen bis - 40°C. Um den Betrieb auch unter diesen Bedingungen zu ermöglichen weist die Leuchte 10 im Gehäuse angeordnete Heizmittel auf. Konkret handelt es sich um Heizschlangen 40, 41 und Heizleiter 42, 43. Die Heizmittel sind in derselben Weise wie die Leuchte (ohne Heizmittel) als explosionsgeschützt ausgelegt und zertifiziert. The lamp 10 shown here is for use under extreme climatic conditions Conditions, namely particularly low temperatures. Are aimed for Temperatures down to - 40 ° C. To enable operation even under these conditions the lamp 10 has heating means arranged in the housing. Specifically, it is about Heating coils 40, 41 and heating conductors 42, 43. The heating means are in the same way as the luminaire (without heating medium) is designed and certified as explosion-proof.

Die Heizschlangen 40, 41 sind unmittelbar oberhalb und unterhalb des Mittelträgers 31 (ohne Abstand zu diesem) und an demselben gehalten. Beide Heizschlangen 40, 41 sind mäanderförmig gelegt, d.h. mit aufeinanderfolgend stets die Richtung wechselnden Krümmungsradien. Dabei sind Berührungspunkte 44 gebildet zwischen einem Ausgang einer Krümmung und einem Eingang der übernächsten Krümmung. Im Bereich der Berührungspunkte 44 sind die Heizschlangen 40, 41 auf dem Mittelträger 31 über geeignete Haltemittel, Klammern oder dergleichen fixiert. Die Krümmungsradien betragen etwa 1,5 cm (Innenradius).The heating coils 40, 41 are immediately above and below the central support 31 (without distance to it) and held on it. Both heating coils 40, 41 are meandering, i.e. with successively always changing direction Radii of curvature. In this case, contact points 44 are formed between an exit a curvature and an entrance to the next but one curvature. In the field of Points of contact 44 are the heating coils 40, 41 on the center support 31 suitable holding means, clips or the like fixed. The radii of curvature are about 1.5 cm (inner radius).

Die Heizschlangen 40, ,41 und Heizleiter 42, 43 sind vollständig isoliert, sodass Kontakte mit benachbarten Bauteilen (elektrisch) unschädlich sind.The heating coils 40,, 41 and heating conductors 42, 43 are completely insulated, so that contacts are harmless with neighboring components (electrical).

Die Heizschlangen 40, 41 erstrecken sich etwa über die Länge und die wirksame Breite der Leuchtstofflampen, siehe insbesondere Fig. 3, 5 und 6. Die obere Heizschlange 40 liegt direkt an den Leuchtstofflampen an oder weist gegenüber diesen nur einen geringen Abstand auf. Auf Grund dieser und relativ zum Gehäuse mittigen Anordnung wird der Innenraum des Gehäuses durch die Heizschlangen 40, 41 wirksam und schnell aufgewärmt bzw. kann auf einer deutlich höheren Temperatur im Verhältnis zur Außentemperatur gehalten werden. Zugleich werden die Leuchtstofflampen besonders gewärmt.The heating coils 40, 41 extend approximately over the length and the effective width of fluorescent lamps, see in particular FIGS. 3, 5 and 6. The upper heating coil 40 lies directly on the fluorescent lamps or shows only a small amount compared to them Distance on. Because of this and relative to the housing central arrangement Interior of the housing through the heating coils 40, 41 effectively and quickly warmed up or can be at a significantly higher temperature in relation to Outside temperature can be kept. At the same time, the fluorescent lamps are special warmed.

Die Heizleiter 42 sind im Boden 12 angeordnet, nämlich vollständig umlaufend und auf dem Profilboden 25, im Bereich des Übergangs zwischen Profilboden 25 und den Profilseiten 26, 27. Zugleich liegt der Heizleiter 42 mit einem großen Teil seiner Länge am Akku 11 an oder weist gegenüber diesem nur einen geringen Abstand auf. Dadurch ergibt sich eine direkte Wärmeeinwirkung auf den Akku 11 und auf im Bereich des Tragblechs 24 angeordnete elektrische oder elektronische Bauteile.The heating conductors 42 are arranged in the base 12, namely completely revolving and on the profile floor 25, in the area of the transition between the profile floor 25 and the Profile pages 26, 27. At the same time, the heating conductor 42 lies with a large part of its length Battery 11 on or is only a short distance from it. This gives a direct heat effect on the battery 11 and in the area of the support plate 24 arranged electrical or electronic components.

Die Heizmittel sind grundsätzlich ständig an die Netzspannung angeschlossen. In der Leuchte 10 ist aber ein Temperaturregler (nicht gezeigt) vorgesehen, der die Heizmittel in Abhängigkeit von einer Innentemperatur der Leuchte gegebenenfalls von der Netzspannung trennt und nach Erreichen eines unteren Grenzwerts wieder zuschaltet. Bevorzugt ist eine Innentemperatur von plus 10° bis plus 20°C (unterer und oberer Grenzwert). The heating means are always connected to the mains voltage. In the Luminaire 10, however, a temperature controller (not shown) is provided, which the heating means in Depending on an internal temperature of the lamp, if necessary, on the Mains voltage disconnects and switches on again after reaching a lower limit. An internal temperature of plus 10 ° to plus 20 ° C (lower and upper Limit).

Bei Ausfall der Netzspannung werden auch die Heizmittel stromlos. Lediglich die Leuchtmittel werden aus dem Akku 11 versorgt. Leuchtmittel und Akku 11 weisen bei Übergang in den Notbetrieb eine günstige Betriebstemperatur auf. Auch bei sehr niedrigen Außentemperaturen ist deshalb ein Ausfall nicht zu befürchten. Ein Notbetrieb über die angestrebte Zeitdauer von 3 Stunden ist möglich.If the mains voltage fails, the heating means are also de-energized. Only that Illuminants are supplied from the battery 11. Illuminants and battery 11 show Transition to emergency operation at a favorable operating temperature. Even with very a low temperature is therefore not to be feared as a failure. An emergency operation over the desired period of 3 hours is possible.

Die bei Anliegen der Netzspannung mitlaufenden Heizmitteln sichern auch den Betrieb der Leuchtmittel bei sehr niedrigen Außentemperaturen.The heating means that run with the mains voltage also ensure operation the illuminant at very low outside temperatures.

In der Praxis werden Leuchten des beschriebenen Typs einmal eingeschaltet und erst nach Erreichen der Leuchtmittel-Lebensdauer zum Auswechseln der Leuchtmittel abgeschaltet. Für das erstmalige Einschalten nach dem Einsetzen neuer Leuchtmittel kann ein zeitlicher Vorlauf der Heizmittel vorgesehen sein. Möglich ist aber auch ein synchrones Einschalten der Heizmittel und Leuchtmittel. Sofern die Leuchtmittel auf Grund niedriger Außentemperaturen nicht zünden wollen (Leuchtstofflampen) stellt sich spätestens nach entsprechender Erwärmung der Leuchte die gewünschte Zündung ein. In practice, lights of the type described are switched on once and only then after reaching the lamp life to replace the lamp off. For switching on for the first time after inserting new lamps can be provided a time advance of the heating means. But one is also possible synchronous switching on of the heating means and illuminants. If the illuminant is on Do not want to ignite due to low outside temperatures (fluorescent lamps) switch on the desired ignition at the latest after the lamp has been heated accordingly.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1010
Leuchtelamp
1111
Akkubattery pack
1212
Bodenground
1313
Deckelcover
1414
DeckelflanschprofilDeckelflanschprofil
1515
Dichtungpoetry
1616
Bodenflanschbottom flange
1717
Längsseitelong side
1818
Scharnierhinge
1919
Scharnierhinge
2020
Scharnierhinge
2121
Längsseitelong side
2222
Hakenhook
2323
Bodenwandbottom wall
2424
Tragblechsupport plate
2525
ProfilbodenDuct floor
2626
Profilseiteprofile page
2727
Profilseiteprofile page
2828
Halterholder
2929
Halterholder
3030
Stützesupport
3131
Mittelträgercenter support
3232
Fassungenversions
3333
Fassungenversions
3434
TastschalterPush switch
3535
TastschalterPush switch
3636
Stirnseitefront
3737
Stirnseitefront
3838
Oberwandupper wall
3939
Taststiftestyli
4040
Heizschlangeheating coil
4141
Heizschlangeheating coil
4242
Heizleiterheating conductor
4343
Heizleiterheating conductor
4444
Berührungspunktepoints of contact

Claims (6)

Explosionsgeschützte Leuchte mit Leuchtstoff-Leuchtmitteln und mit einem Akku als Notstromquelle, gekennzeichnet durch Heizmittel zumindest zum Erwärmen der Leuchtmittel oder des Akkus.Explosion-proof lamp with fluorescent lamps and with a battery as an emergency power source, characterized by heating means at least for heating the lamps or the battery. Leuchte nach Anspruch 1, dadurch gekennzeichnet, dass den Leuchtmitteln und dem Akku Heizmittel zugeordnet sind.Luminaire according to claim 1, characterized in that the illuminants and the battery are assigned heating means. Leuchte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass auch elektronischen Bauteilen Heizmittel zugeordnet sind.Luminaire according to claim 1 or 2, characterized in that heating means are also assigned to electronic components. Leuchte nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Heizmittel zwischen einer Gehäusewandung und dem zu wärmenden Bauteil angeordnet sind.Luminaire according to claim 1 or one of the further claims, characterized in that the heating means are arranged between a housing wall and the component to be heated. Leuchte nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass als Heizmittel elektrische Heizschlangen vorgesehen sind.Luminaire according to claim 1 or one of the further claims, characterized in that electrical heating coils are provided as heating means. Leuchte nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Heizmittel temperaturgesteuert sind.Luminaire according to claim 1 or one of the further claims, characterized in that the heating means are temperature controlled.
EP03026406A 2002-12-10 2003-11-19 Explosion-proof light fitting Expired - Lifetime EP1429072B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20219149U 2002-12-10
DE20219149U DE20219149U1 (en) 2002-12-10 2002-12-10 Explosion-proof light

Publications (3)

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

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EP03026406A Expired - Lifetime EP1429072B1 (en) 2002-12-10 2003-11-19 Explosion-proof light fitting

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EP (1) EP1429072B1 (en)
AT (1) ATE399960T1 (en)
DE (2) DE20219149U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120791A1 (en) * 2012-02-15 2013-08-22 Zumtobel Lighting Gmbh Emergency luminaire with rechargeable battery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20040113U1 (en) * 2004-03-18 2004-06-18 S I D E S P A LIGHTING EQUIPMENT FOR FIXED INSTALLATION

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH325651A (en) * 1954-08-14 1957-11-15 Belmag Zuerich Beleuchtungs U Electric street light with fluorescent tubes arranged in a closed housing
DE3525349A1 (en) * 1985-07-16 1987-01-22 Felix Wagner Light for operation at low temperatures
FR2787242A1 (en) * 1998-12-15 2000-06-16 Leseur Maurice Automobile battery heating system for engine starting in a low temperature environment
DE10021510A1 (en) * 2000-05-03 2001-11-08 Mannesmann Vdo Ag Lighting device, especially cold cathode lamp with electrical heating, e.g. for LCD display in motor vehicle, uses heating wire which multiply crosses one face of cold cathode lamp
DE10156168A1 (en) * 2000-11-18 2002-07-04 Hubbell Lighting Ltd Electrical device, light fitting and method for interrupting the energy supply therein

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH325651A (en) * 1954-08-14 1957-11-15 Belmag Zuerich Beleuchtungs U Electric street light with fluorescent tubes arranged in a closed housing
DE3525349A1 (en) * 1985-07-16 1987-01-22 Felix Wagner Light for operation at low temperatures
FR2787242A1 (en) * 1998-12-15 2000-06-16 Leseur Maurice Automobile battery heating system for engine starting in a low temperature environment
DE10021510A1 (en) * 2000-05-03 2001-11-08 Mannesmann Vdo Ag Lighting device, especially cold cathode lamp with electrical heating, e.g. for LCD display in motor vehicle, uses heating wire which multiply crosses one face of cold cathode lamp
DE10156168A1 (en) * 2000-11-18 2002-07-04 Hubbell Lighting Ltd Electrical device, light fitting and method for interrupting the energy supply therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120791A1 (en) * 2012-02-15 2013-08-22 Zumtobel Lighting Gmbh Emergency luminaire with rechargeable battery

Also Published As

Publication number Publication date
EP1429072A3 (en) 2005-10-12
DE50310061D1 (en) 2008-08-14
DE20219149U1 (en) 2003-03-20
EP1429072B1 (en) 2008-07-02
ATE399960T1 (en) 2008-07-15

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