EP1325510B1 - Lamp for an explosion-proof lighting unit - Google Patents

Lamp for an explosion-proof lighting unit Download PDF

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Publication number
EP1325510B1
EP1325510B1 EP01965150.4A EP01965150A EP1325510B1 EP 1325510 B1 EP1325510 B1 EP 1325510B1 EP 01965150 A EP01965150 A EP 01965150A EP 1325510 B1 EP1325510 B1 EP 1325510B1
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EP
European Patent Office
Prior art keywords
lamp
jacket
pressure
temperature
socket
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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
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EP01965150.4A
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German (de)
French (fr)
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EP1325510A1 (en
Inventor
Gerhard Schwarz
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Eaton Protection Systems IP GmbH and Co KG
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Eaton Protection Systems IP GmbH and Co KG
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Publication of EP1325510A1 publication Critical patent/EP1325510A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/50—Auxiliary parts or solid material within the envelope for reducing risk of explosion upon breakage of the envelope, e.g. for use in mines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • 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 lamp for use in explosion-proof lights with at least one encased in an envelope bulb inner lamp and an electrically connected with this lamp holder, wherein a formed between enveloping bulb and interior lamp insulating space is at least partially evacuated.
  • Such a lamp is out of the DE 32 365 29 known.
  • temperature and pressure inside the lamp must be sufficiently high to generate light.
  • the enveloping bulb is provided around the inner lamp and the insulating space formed between them is at least partially evacuated.
  • a luminaire equipped with the lamp described above can be used in potentially explosive areas in which, for example, flammable gases, vapors or mist are present, which could be ignited by the temperature of the interior lamp.
  • the invention has for its object to improve a lamp for explosion-proof lights of the type mentioned in that at a collapse of the vacuum in the insulating space reliably and quickly lowered the temperature of the lamp and in particular the interior lamp and an explosion is prevented.
  • the insulating space is associated with at least one pressure and / or temperature sensor, which with a breaker circuit for interrupting the power supply of the lamp upon detection of a pressure or a temperature greater than a each predetermined maximum value is connected.
  • the pressure or temperature sensor By the pressure or temperature sensor, a collapse of the vacuum or an associated increase in temperature in the insulating space is detected quickly and reliably. As soon as the corresponding pressure or the corresponding temperature is greater than a maximum value for pressure and temperature specified for the hazardous area, the voltage supply of the luminaire is interrupted by a corresponding breaker circuit. This means that not only is the temperature of the luminaire lowered, but at the same time the luminaire is also de-energized. As a result, an explosion in the area is reliably prevented and as proposed in the prior art destruction of the interior lamp is in any way necessary.
  • the pressure sensor can be arranged inside the enveloping piston.
  • the arrangement is preferably carried out at such a location that does not hinder a light emission from the lamp for the intended lighting purposes.
  • the temperature sensor can be provided.
  • the temperature measurement can be provided either inside or directly outside the enveloping piston, whereby the corresponding temperature sensor can be arranged inside and / or outside of the enveloping piston.
  • the same restriction applies to the arrangement of the temperature sensor as for the pressure sensor, that is, a light leakage should be hindered as little as possible.
  • the breaker circuit can be arranged in the lamp socket. In this case, the interruption of the power supply of the lamp is made by the lamp itself and corresponding external circuits are not necessary.
  • these can be connected to the breaker circuit via corresponding connecting wires.
  • the breaker circuit simultaneously evaluates the signals.
  • the circuit breaker can be arranged externally and, if necessary, centrally for a number of luminaires.
  • a pressure and / or temperature measurement value from the corresponding sensor via the supply lines of the lamp to the breaker circuit can be transmitted.
  • the corresponding measured values can be modulated onto the supply voltage and transmitted to the interrupter circuit, where they are demodulated and evaluated. Other facilities for transmitting the measured values are possible.
  • the interior lamp can be melted in the envelope and connecting wires of the interior lamp can be passed through the envelope bulb in the direction of the lamp socket.
  • the outer bulb may have an open towards the lamp socket end opening, which is closed in the lamp holder.
  • the interior lamp can be used and then the closing of the enveloping bulb in the lamp socket takes place.
  • the corresponding connection wires of the interior lamp can be led out of the enveloping bulb through the end opening in the direction of the lamp socket.
  • pressure sensor and / or temperature sensor can be arranged in or near the lamp socket. It is also possible that the corresponding sensor is part of the circuit breaker or both are integrated in a circuit.
  • the sensor or the corresponding circuit can be arranged, for example, on a top side of the casting resin used for casting the enveloping piston, which side faces the insulating space.
  • the interior lamp may be, for example, a discharge lamp such as a halogen lamp, a high pressure sodium vapor lamp, a high pressure mercury vapor lamp or the like.
  • the shape of the enveloping bulb can be optimized with respect to the light output, the temperature distribution or the like, in particular spherical or paraboloidal enveloping pistons, see DE 36 114 84 , possible are.
  • Fig. 1 an embodiment of a lamp 1 according to the invention for explosion-proof lights in a simplified representation and partially shown in longitudinal section.
  • the lamp 1 has an interior lamp 3. This is, for example, a discharge lamp such as a halogen lamp, high pressure sodium vapor lamp, high pressure mercury vapor lamp or the like.
  • the interior lamp 3 can be arranged with its socket 13 in the lamp 1.
  • connecting wires 9, 10 are guided to a lamp socket 4 of the lamp 1.
  • the connecting wire 9 connects the approximately cylindrical outer walls of the sockets 13,4 and the connecting wire 10 uses corresponding contact lugs 14, 15 of the respective sockets, which are electrically insulated from the cylindrical outer walls of these sockets.
  • the interior lamp 3 is encapsulated in an outer envelope 2. This has an end opening 11 which points in the direction of the socket 4 and in this by a corresponding material, such as casting resin 12, is closed. Through the end opening 11, the socket 13 of the interior lamp 3 and the connecting wires 9, 10 led out of the socket 2 in the version 4.
  • the enveloping piston 2 can be closed on all sides, corresponding connecting wires 9, 10 being guided through the enveloping piston. Also in this case, the enveloping bulb 2 may be closed in the lamp holder 4.
  • a pressure sensor 6 is arranged on an inner side of the enveloping piston 2. Its arrangement is in particular such that a light emission of the lamp 1 is as unobstructed as possible.
  • the pressure sensor 6 can also be arranged, for example, in the interior of the holder 4 or on a surface of the casting resin 12.
  • a temperature sensor 7 arranged. This can be arranged both in the interior of the enveloping bulb 2, in the region of the lamp holder 4 or on an outer side of the enveloping bulb 2.
  • Fig. 1 is shown in particular as the pressure sensor 6 is connected via a corresponding connecting line 16 with an arranged in the lamp holder 4 breaker circuit 8.
  • This interrupter circuit switches off the lamp 1 when a value greater than a predefinable maximum value for pressure or temperature is measured by one of the sensors 6, 7.
  • a simple embodiment of such a breaker circuit is an electrically triggerable switch which interrupts, for example, the lead wire 10 in the presence of an excessively high pressure or temperature value.
  • pressure sensor 6 different sensors are possible, which are both small enough for installation in the inventive lamp 1 as well as fast enough to respond to a corresponding pressure increase in the insulating space 5.
  • pressure sensors are piezoresistive or capacitive, micromechanical pressure sensors and the like.
  • the temperature sensor may be formed as a thermocouple, resistance thermometer or the like.
  • the breaker circuit 8 is arranged outside the lamp 1.
  • a breaker circuit can be used for a plurality of lamps or lights, these lights or lights are either total or selectively off.
  • the lamp according to the invention ensures that an explosive atmosphere surrounding it can not be ignited.

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  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Resistance Heating (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Eye Examination Apparatus (AREA)

Description

Die Erfindung betrifft eine Lampe zum Einsatz in explosionsgeschützten Leuchten mit zumindest einer in einem Hüllkolben eingekapselten Innenlampe und einer mit dieser elektrisch verbundenen Lampenfassung, wobei ein zwischen Hüllkolben und Innenlampe gebildeter Isolierraum zumindest teilevakuiert ist.The invention relates to a lamp for use in explosion-proof lights with at least one encased in an envelope bulb inner lamp and an electrically connected with this lamp holder, wherein a formed between enveloping bulb and interior lamp insulating space is at least partially evacuated.

Eine solche Lampe ist aus der DE 32 365 29 bekannt. Insbesondere bei Entladungslampen oder dergleichen als Innenlampe müssen Temperatur und Druck innerhalb der Lampe ausreichend hoch sein, um Licht zu erzeugen. Um zu verhindern, dass die Lampe an ihrer Außenseite eine entsprechend hohe Temperatur aufweist, die in explosionsgefährdeten Bereichen teilweise nicht zulässig wäre, ist um die Innenlampe der Hüllkolben vorgesehen und der zwischen diesen gebildeten Isolierraum ist zumindest teilevakuiert.Such a lamp is out of the DE 32 365 29 known. In particular, in discharge lamps or the like as an interior lamp, temperature and pressure inside the lamp must be sufficiently high to generate light. In order to prevent the lamp on its outside has a correspondingly high temperature, which would be partially not permitted in potentially explosive areas, the enveloping bulb is provided around the inner lamp and the insulating space formed between them is at least partially evacuated.

Dadurch kann eine Leuchte bestückt mit vor beschriebener Lampe in explosionsgefährdeten Bereichen eingesetzt werden, in denen beispielsweise brennbare Gase, Dämpfe oder Nebel vorhanden sind, welche durch die Temperatur der Innenlampe gezündet werden könnten.As a result, a luminaire equipped with the lamp described above can be used in potentially explosive areas in which, for example, flammable gases, vapors or mist are present, which could be ignited by the temperature of the interior lamp.

Der DE 32 36 529 ist nicht entnehmbar, was im Falle beispielsweise des Zusammenbruchs des Vakuums im Isolierraum erfolgt. Ein solcher Zusammenbruch des Vakuums kann sich durch eine Beschädigung des Hüllkolbens oder einer anderen Undichtigkeit gegenüber der Umgebungsluft im Bereich der Lampenfassung ergeben.Of the DE 32 36 529 is not removable, which takes place in the case of, for example, the collapse of the vacuum in the insulating space. Such a breakdown of the vacuum may result from damage to the enveloping bulb or other leakage of ambient air around the bulb socket.

In der DE 36 114 84 wird für eine ähnliche explosionsgeschützte Leuchte beschrieben, dass in einem solchen Fall beispielsweise eine Wendel der Innenlampe bei Beschädigung der Leuchte zerstört werden soll. Dies soll verhindern, dass ein explosives Gemisch aus dem explosionsgefährdeten Bereich an die Innenlampe gelangt, bevor diese sich ausreichend abgekühlt hat. Weitere Lampen sind in US4143301 und DE3117592 offenbart. Die Zerstörung der Wendel der Innenlampe könnte sich in diesem Fall so lange verzögern, dass die Temperatur der Leuchte noch nicht ausreichend gesenkt ist, wenn entsprechend explosives Gemisch mit den heißen Teilen der Leuchte in Berührung gerät. Folglich ist eine Explosion in einem solchen explosionsgefährdeten Bereich nicht sicher genug verhindert.In the DE 36 114 84 is described for a similar explosion-proof lamp, that in such a case, for example, a coil of the interior lamp to be destroyed if the light is damaged. This is to prevent an explosive mixture from the potentially explosive area from reaching the interior lamp before it has cooled sufficiently. Other lamps are in US4143301 and DE3117592 disclosed. The destruction of the filament of the interior lamp could be delayed in this case so long that the temperature of the lamp is not lowered sufficiently when correspondingly explosive mixture with the hot parts of the lamp in contact. Consequently, an explosion in such a hazardous area is not prevented enough safely.

Der Erfindung liegt die Aufgabe zugrunde, eine Lampe für explosionsgeschützte Leuchten der eingangs genannten Art dahingehend zu verbessern, dass bei einem Zusammenbruch des Vakuums im Isolierraum zuverlässig und schnell die Temperatur der Leuchte und insbesondere der Innenlampe gesenkt und eine Explosion verhindert wird.The invention has for its object to improve a lamp for explosion-proof lights of the type mentioned in that at a collapse of the vacuum in the insulating space reliably and quickly lowered the temperature of the lamp and in particular the interior lamp and an explosion is prevented.

Diese Aufgabe wird im Zusammenhang mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 dadurch gelöst, dass dem Isolierraum wenigstens ein Druck- und/oder Temperatursensor zugeordnet ist, welcher mit einer Unterbrecherschaltung zur Unterbrechung der Spannungsversorgung der Leuchte bei Ermittlung eines Drucks oder einer Temperatur größer als ein jeweils vorgegebener Maximalwert verbunden ist.This object is achieved in connection with the features of the preamble of claim 1, characterized in that the insulating space is associated with at least one pressure and / or temperature sensor, which with a breaker circuit for interrupting the power supply of the lamp upon detection of a pressure or a temperature greater than a each predetermined maximum value is connected.

Durch den Druck- oder Temperatursensor wird ein Zusammenbruch des Vakuums bzw. eine damit verbundene Temperaturerhöhung im Isolierraum schnell und zuverlässig nachgewiesen. Sobald der entsprechende Druck oder die entsprechende Temperatur größer als ein für den explosionsgefährdeten Bereich vorgegebener Maximalwert für Druck und Temperatur ist, wird die Spannungsversorgung der Leuchte durch eine entsprechende Unterbrecherschaltung unterbrochen. Das heißt, es wird nicht nur die Temperatur der Leuchte gesenkt, sondern gleichzeitig wird die Leuchte auch spannungsfrei geschaltet. Dadurch ist eine Explosion in dem Bereich sicher verhindert und eine wie im Stand der Technik vorgeschlagene Zerstörung der Innenlampe ist in keiner Weise notwendig.By the pressure or temperature sensor, a collapse of the vacuum or an associated increase in temperature in the insulating space is detected quickly and reliably. As soon as the corresponding pressure or the corresponding temperature is greater than a maximum value for pressure and temperature specified for the hazardous area, the voltage supply of the luminaire is interrupted by a corresponding breaker circuit. This means that not only is the temperature of the luminaire lowered, but at the same time the luminaire is also de-energized. As a result, an explosion in the area is reliably prevented and as proposed in the prior art destruction of the interior lamp is in any way necessary.

Statt dessen ist es erfindungsgemäß sogar möglich, nach Beseitigung der gefährlichen Bedingungen die Leuchte wieder einzuschalten und gegebenenfalls durch Austausch des Hüllkolbens oder durch Austausch eines entsprechenden Hüllkolben-Innenlampen-Moduls zu reparieren.Instead, it is even possible according to the invention to turn the lamp back on again after the dangerous conditions have been remedied and, if necessary, to be repaired by replacing the enveloping bulb or by replacing a corresponding outer bulb-inner bulb module.

Um den Druck im Isolierraum während des Einsatzes der erfindungsgemäßen Leuchte stetig und sicher überprüfen zu können, kann der Drucksensor innen am Hüllkolben angeordnet sein. Die Anordnung erfolgt dabei vorzugsweise an einer solchen Stelle, die einen Lichtaustritt aus der Lampe zu den vorgesehenen Beleuchtungszwecken nicht behindert.In order to check the pressure in the insulating space during use of the lamp according to the invention steadily and safely, the pressure sensor can be arranged inside the enveloping piston. The arrangement is preferably carried out at such a location that does not hinder a light emission from the lamp for the intended lighting purposes.

Alternativ zu oder gleichzeitig mit dem Drucksensor kann der Temperatursensor vorgesehen sein. Die Temperaturmessung kann sowohl innerhalb oder direkt außerhalb des Hüllkolbens vorgesehen werden, wodurch der entsprechende Temperatursensor innen und/oder außen am Hüllkolben angeordnet sein kann. In diesem Fall gilt für die Anordnung des Temperatursensors im Wesentlichen die gleiche Einschränkung wie für den Drucksensor, d.h., ein Lichtaustritt sollte möglichst wenig behindert werden.As an alternative to or simultaneously with the pressure sensor, the temperature sensor can be provided. The temperature measurement can be provided either inside or directly outside the enveloping piston, whereby the corresponding temperature sensor can be arranged inside and / or outside of the enveloping piston. In this case, the same restriction applies to the arrangement of the temperature sensor as for the pressure sensor, that is, a light leakage should be hindered as little as possible.

Um die erfindungsgemäße Lampe insgesamt als Leuchtenmodul mit allen notwendigen Bauteilen auszugestalten, kann die Unterbrecherschaltung in der Lampenfassung angeordnet sein. In diesem Fall erfolgt die Unterbrechung der Spannungsversorgung der Lampe von der Lampe selbst her und entsprechende externe Schaltungen sind nicht notwendig.To design the lamp according to the invention overall as a luminaire module with all the necessary components, the breaker circuit can be arranged in the lamp socket. In this case, the interruption of the power supply of the lamp is made by the lamp itself and corresponding external circuits are not necessary.

Zur Übermittlung entsprechender Druck- oder Temperatursignale vom jeweiligen Sensor können diese mit der Unterbrecherschaltung über entsprechende Verbindungsdrähte verbunden sein. In diesem Fall wertet die Unterbrecherschaltung gleichzeitig die Signale aus.To transmit corresponding pressure or temperature signals from the respective sensor, these can be connected to the breaker circuit via corresponding connecting wires. In this case, the breaker circuit simultaneously evaluates the signals.

Um die Lampe einfacher aufzubauen, kann die Unterbrecherschaltung extern und gegebenenfalls zentral für eine Reihe von Leuchten angeordnet sein. In diesem Fall kann ein Druck- und/oder Temperaturmesswert vom entsprechenden Sensor über die Versorgungsleitungen der Leuchte an die Unterbrecherschaltung übermittelbar sein. Die entsprechenden Messwerte sind auf die Versorgungsspannung aufmodulierbar und an die Unterbrecherschaltung übertragbar, wo sie demoduliert und ausgewertet werden. Weitere Einrichtungen zur Übertragung der Messwerte sind möglich.To simplify the construction of the lamp, the circuit breaker can be arranged externally and, if necessary, centrally for a number of luminaires. In this case, a pressure and / or temperature measurement value from the corresponding sensor via the supply lines of the lamp to the breaker circuit can be transmitted. The corresponding measured values can be modulated onto the supply voltage and transmitted to the interrupter circuit, where they are demodulated and evaluated. Other facilities for transmitting the measured values are possible.

Um die Innenlampe in sicherer Weise im Hüllkolben unterbringen zu können, kann die Innenlampe im Hüllkolben eingeschmolzen sein und Anschlussdrähte der Innenlampe können durch den Hüllkolben in Richtung Lampenfassung hindurchgeführt sein.In order to accommodate the interior lamp in a safe manner in the enveloping bulb, the interior lamp can be melted in the envelope and connecting wires of the interior lamp can be passed through the envelope bulb in the direction of the lamp socket.

Um den Zusammenbau von Hüllkolben und Innenlampe zu vereinfachen, kann der Hüllkolben eine in Richtung Lampenfassung offene Endöffnung aufweisen, welche in der Lampenfassung verschlossen ist. Durch diese Endöffnung ist beispielsweise die Innenlampe einsetzbar und dann erfolgt das Verschließen des Hüllkolbens in der Lampenfassung. Die entsprechenden Anschlussdrähte der Innenlampe können durch die Endöffnung in Richtung Lampenfassung aus dem Hüllkolben herausgeführt sein.In order to simplify the assembly of outer bulb and inner lamp, the outer bulb may have an open towards the lamp socket end opening, which is closed in the lamp holder. By this end opening, for example, the interior lamp can be used and then the closing of the enveloping bulb in the lamp socket takes place. The corresponding connection wires of the interior lamp can be led out of the enveloping bulb through the end opening in the direction of the lamp socket.

Um möglichst den Lichtaustritt durch den Hüllkolben wenig zu beeinträchtigen und gleichzeitig einfach in der Lampe angeordnet werden zu können, können Drucksensor und/oder Temperatursensor in oder nahe der Lampenfassung angeordnet sein. Es ist ebenfalls möglich, dass der entsprechende Sensor Teil der Unterbrecherschaltung ist bzw. beide in einer Schaltung integriert sind. Der Sensor bzw. die entsprechende Schaltung kann beispielsweise auf einer dem Isolierraum zuweisenden Oberseite eines zum Vergießen des Hüllkolbens verwendeten Gießharzes angeordnet sein.In order to minimize the light emission through the enveloping bulb as little as possible and at the same time be able to be easily arranged in the lamp, pressure sensor and / or temperature sensor can be arranged in or near the lamp socket. It is also possible that the corresponding sensor is part of the circuit breaker or both are integrated in a circuit. The sensor or the corresponding circuit can be arranged, for example, on a top side of the casting resin used for casting the enveloping piston, which side faces the insulating space.

Die Innenlampe kann beispielsweise eine Entladungslampe, wie eine Halogenlampe, eine Natriumdampf-Hochdrucklampe, eine Quecksilberdampf-Hochdrucklampe oder dergleichen sein.The interior lamp may be, for example, a discharge lamp such as a halogen lamp, a high pressure sodium vapor lamp, a high pressure mercury vapor lamp or the like.

Die Form des Hüllkolbens kann bezüglich der Lichtausbeute, der Temperaturverteilung oder dergleichen optimiert werden, wobei insbesondere kugelförmige oder paraboloidförmige Hüllkolben, siehe DE 36 114 84 , möglich sind.The shape of the enveloping bulb can be optimized with respect to the light output, the temperature distribution or the like, in particular spherical or paraboloidal enveloping pistons, see DE 36 114 84 , possible are.

Im Folgenden wird ein vorteilhaftes Ausführungsbeispiel der Erfindung anhand der in der Zeichnung beigefügten Figur näher beschrieben.In the following, an advantageous embodiment of the invention will be described with reference to the accompanying figure in the drawing.

Es zeigt:

Fig. 1
einen Längsschnitt durch ein Ausführungsbeispiel einer erfindungsgemäßen Lampe in vereinfachter Darstellung.
It shows:
Fig. 1
a longitudinal section through an embodiment of a lamp according to the invention in a simplified representation.

In Fig. 1 ist ein Ausführungsbeispiel einer erfindungsgemäßen Lampe 1 für explosionsgeschützte Leuchten in vereinfachter Darstellung und teilweise im Längsschnitt dargestellt.In Fig. 1 an embodiment of a lamp 1 according to the invention for explosion-proof lights in a simplified representation and partially shown in longitudinal section.

Die Lampe 1 weist eine Innenlampe 3 auf. Diese ist beispielsweise eine Entladungslampe, wie eine Halogenlampe, Natriumdampf-Hochdrucklampe, Quecksilberdampf-Hochdrucklampe oder dergleichen. Die Innenlampe 3 kann mit ihrer Fassung 13 in der Lampe 1 angeordnet sein. Von der Fassung 13 sind Anschlussdrähte 9, 10 zu einer Lampenfassung 4 der Lampe 1 geführt. Dabei verbindet der Anschlussdraht 9 die in etwa zylindrischen Außenwände der Fassungen 13,4 und der Anschlussdraht 10 verwendet entsprechende Kontaktwarzen 14, 15 der jeweiligen Fassungen, die gegenüber den zylindrischen Außenwänden dieser Fassungen elektrisch isoliert sind.The lamp 1 has an interior lamp 3. This is, for example, a discharge lamp such as a halogen lamp, high pressure sodium vapor lamp, high pressure mercury vapor lamp or the like. The interior lamp 3 can be arranged with its socket 13 in the lamp 1. Of the socket 13 connecting wires 9, 10 are guided to a lamp socket 4 of the lamp 1. In this case, the connecting wire 9 connects the approximately cylindrical outer walls of the sockets 13,4 and the connecting wire 10 uses corresponding contact lugs 14, 15 of the respective sockets, which are electrically insulated from the cylindrical outer walls of these sockets.

Die Innenlampe 3 ist gekapselt in einem äußeren Hüllkolben 2 angeordnet. Dieser weist eine Endöffnung 11 auf, die in Richtung Fassung 4 weist und in dieser durch ein entsprechendes Material, wie beispielsweise Gießharz 12, verschlossen ist. Durch die Endöffnung 11 sind die Fassung 13 der Innenlampe 3 und die Anschlußdrähte 9, 10 in die Fassung 4 aus dem Hüllkolben 2 herausgeführt.The interior lamp 3 is encapsulated in an outer envelope 2. This has an end opening 11 which points in the direction of the socket 4 and in this by a corresponding material, such as casting resin 12, is closed. Through the end opening 11, the socket 13 of the interior lamp 3 and the connecting wires 9, 10 led out of the socket 2 in the version 4.

Bei einem anderen Ausführungsbeispiel der erfindungsgemäßen Lampe 1 kann der Hüllkolben 2 allseitig geschlossen sein, wobei entsprechende Anschiussdrähte 9, 10 durch den Hüllkolben hindurchgeführt sind. Auch in diesem Fall kann der Hüllkolben 2 in der Lampenfassung 4 verschlossen sein.In another exemplary embodiment of the lamp 1 according to the invention, the enveloping piston 2 can be closed on all sides, corresponding connecting wires 9, 10 being guided through the enveloping piston. Also in this case, the enveloping bulb 2 may be closed in the lamp holder 4.

Zur Bestimmung des Druckes innerhalb des Isolierraums 5 ist an einer Innenseite des Hüllkolbens 2 ein Drucksensor 6 angeordnet. Dessen Anordnung erfolgt insbesondere so, dass ein Lichtaustritt der Lampe 1 möglichst unbehindert ist. Der Drucksensor 6 ist beispielsweise auch im Inneren der Fassung 4 bzw. auf einer Oberfläche des Gießharzes 12 anordbar. Neben oder alternativ zum Drucksensor 6 ist ein Temperatursensor 7 angeordnet. Dieser kann sowohl im Inneren des Hüllkolbens 2, im Bereich der Lampenfassung 4 oder auch auf einer Außenseite des Hüllkolbens 2 angeordnet sein.To determine the pressure within the insulating space 5, a pressure sensor 6 is arranged on an inner side of the enveloping piston 2. Its arrangement is in particular such that a light emission of the lamp 1 is as unobstructed as possible. The pressure sensor 6 can also be arranged, for example, in the interior of the holder 4 or on a surface of the casting resin 12. In addition to or as an alternative to the pressure sensor 6, a temperature sensor 7 arranged. This can be arranged both in the interior of the enveloping bulb 2, in the region of the lamp holder 4 or on an outer side of the enveloping bulb 2.

In Fig. 1 ist insbesondere dargestellt, wie der Drucksensor 6 über eine entsprechende Verbindungsleitung 16 mit einer in der Lampenfassung 4 angeordneten Unterbrecherschaltung 8 verbunden ist. Diese Unterbrecherschaltung schaltet die Lampe 1 spannungsfrei, wenn durch einen der Sensoren 6, 7 ein Wert größer als ein vorgebbarer Maximalwert für Druck bzw. Temperatur gemessen wird. Ein einfaches Ausführungsbeispiel für eine solche Unterbrecherschaltung ist ein elektrisch auslösbarer Schalter, der bei Vorliegen eines zu hohen Druck- oder Temperaturwertes beispielsweise den Anschlussdraht 10 unterbricht.In Fig. 1 is shown in particular as the pressure sensor 6 is connected via a corresponding connecting line 16 with an arranged in the lamp holder 4 breaker circuit 8. This interrupter circuit switches off the lamp 1 when a value greater than a predefinable maximum value for pressure or temperature is measured by one of the sensors 6, 7. A simple embodiment of such a breaker circuit is an electrically triggerable switch which interrupts, for example, the lead wire 10 in the presence of an excessively high pressure or temperature value.

Als Drucksensor 6 sind unterschiedliche Sensoren möglich, die sowohl klein genug zum Einbau in die erfindungsgemäße Lampe 1 als auch schnell genug zum Ansprechen auf eine entsprechende Druckerhöhung im Isolierraum 5 sind. Beispiele für solche Drucksensoren sind piezoresistive oder kapazitive, mikromechanische Drucksensoren und dergleichen.As a pressure sensor 6 different sensors are possible, which are both small enough for installation in the inventive lamp 1 as well as fast enough to respond to a corresponding pressure increase in the insulating space 5. Examples of such pressure sensors are piezoresistive or capacitive, micromechanical pressure sensors and the like.

Der Temperatursensor kann als Thermoelement, Widerstandsthermometer oder dergleichen ausgebildet sein.The temperature sensor may be formed as a thermocouple, resistance thermometer or the like.

Bei einem nicht dargestellten Ausführungsbeispiel der Erfindung, ist die Unterbrecherschaltung 8 außerhalb der Lampe 1 angeordnet. In diesem Fall kann eine Unterbrecherschaltung für eine Vielzahl von Lampen oder Leuchten eingesetzt werden, wobei diese Lampen oder Leuchten entweder insgesamt oder selektiv ausschaltbar sind.In an embodiment of the invention not shown, the breaker circuit 8 is arranged outside the lamp 1. In this case, a breaker circuit can be used for a plurality of lamps or lights, these lights or lights are either total or selectively off.

Durch die erfindungsgemäße Lampe ist sicher gestellt, dass eine sie umgebende explosive Atmosphäre nicht gezündet werden kann.The lamp according to the invention ensures that an explosive atmosphere surrounding it can not be ignited.

Claims (8)

  1. Lamp (1) for an explosion-proof lighting unit comprising at least one inner lamp (3) encapsulated inside a jacket (2) in an explosion-proof manner and a lamp socket (4) that is electrically connected to the inner lamp, wherein an insulating space (5) formed between the jacket (2) and the inner lamp (3) is at least partially evacuated, characterised in that at least one pressure sensor and/or temperature sensor (6, 7) is assigned to the insulating space (5) through which corresponding pressure and/or temperature signals can be transmitted via a connecting line (16) to an interrupter circuit (8) for interrupting the power supply to the lamps (1) when a pressure or a temperature greater than a respectively predetermined maximum value is detected, wherein the interrupter circuit is a switch that can be electrically triggered.
  2. Lamp according to claim 1, characterised in that the pressure sensor (6) is arranged on the inside of the jacket (2).
  3. Lamp according to claim 1 or 2, characterised in that a temperature sensor (7) is arranged on the inside and/or on the outside of the jacket (2).
  4. Lamp according to any of the preceding claims, characterised in that the interrupter circuit (8) is arranged in the lamp socket (4).
  5. Lamp according to any of the preceding claims, characterised in that a pressure and/or temperature measurement value can be transmitted by the corresponding sensor (6, 7) to the interrupter circuit (8) via supply lines of the lamp (1).
  6. Lamp according to any of the preceding claims, characterised in that the inner lamp (3) is sealed in the jacket (2) and connecting wires (9, 10) of the inner lamp (3) are led through the jacket (2) in the direction of the lamp socket (4).
  7. Lamp according to any of the preceding claims, characterised in that the jacket (2) comprises an end opening (11) open in the direction of the lamp socket (4) that is closed in the lamp socket.
  8. Lamp according to any of the preceding claims, characterised in that the pressure sensor (6) and/or the temperature sensor (7) is arranged in or near the lamp socket (4).
EP01965150.4A 2000-10-10 2001-07-30 Lamp for an explosion-proof lighting unit Expired - Lifetime EP1325510B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20017372U DE20017372U1 (en) 2000-10-10 2000-10-10 Lamp for explosion-proof luminaire
DE20017372U 2000-10-10
PCT/EP2001/008797 WO2002031860A1 (en) 2000-10-10 2001-07-30 Lamp for an explosion-proof lighting unit

Publications (2)

Publication Number Publication Date
EP1325510A1 EP1325510A1 (en) 2003-07-09
EP1325510B1 true EP1325510B1 (en) 2018-04-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01965150.4A Expired - Lifetime EP1325510B1 (en) 2000-10-10 2001-07-30 Lamp for an explosion-proof lighting unit

Country Status (4)

Country Link
EP (1) EP1325510B1 (en)
DE (1) DE20017372U1 (en)
NO (1) NO328213B1 (en)
WO (1) WO2002031860A1 (en)

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CN110360502A (en) * 2019-06-21 2019-10-22 深圳市富高康电子有限公司 Explosion-proof lamp

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DE102006054784A1 (en) * 2006-11-21 2008-05-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electric lamp with a lamp bulb
CN103542297A (en) * 2013-10-24 2014-01-29 徐春荣 Flameproof lamp

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Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
NO20031613L (en) 2003-04-09
NO328213B1 (en) 2010-01-11
EP1325510A1 (en) 2003-07-09
DE20017372U1 (en) 2002-02-21
NO20031613D0 (en) 2003-04-09
WO2002031860A1 (en) 2002-04-18

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