EP0264039B1 - Explosion-proof and flame-proof light fitting with a pressure-resistant housing and a lens - Google Patents

Explosion-proof and flame-proof light fitting with a pressure-resistant housing and a lens Download PDF

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Publication number
EP0264039B1
EP0264039B1 EP87114458A EP87114458A EP0264039B1 EP 0264039 B1 EP0264039 B1 EP 0264039B1 EP 87114458 A EP87114458 A EP 87114458A EP 87114458 A EP87114458 A EP 87114458A EP 0264039 B1 EP0264039 B1 EP 0264039B1
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EP
European Patent Office
Prior art keywords
components
housing
filler
lamp
light
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
EP87114458A
Other languages
German (de)
French (fr)
Other versions
EP0264039A3 (en
EP0264039B2 (en
EP0264039A2 (en
Inventor
Reinhard Neumann
Cornelius Ploeger
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.)
ABB Ceag Licht und Stromversorgungstechnik GmbH
Original Assignee
ABB Ceag Licht und Stromversorgungstechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Application filed by ABB Ceag Licht und Stromversorgungstechnik GmbH filed Critical ABB Ceag Licht und Stromversorgungstechnik GmbH
Publication of EP0264039A2 publication Critical patent/EP0264039A2/en
Publication of EP0264039A3 publication Critical patent/EP0264039A3/en
Application granted granted Critical
Publication of EP0264039B1 publication Critical patent/EP0264039B1/en
Publication of EP0264039B2 publication Critical patent/EP0264039B2/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/04—Provision of filling media

Definitions

  • the invention relates to a lamp according to the preamble of claim 1.
  • a lamp of the type mentioned has a lamp housing in which the individual electrical components for supplying the lamp, which can either be an incandescent lamp or a fluorescent lamp, are housed.
  • These luminaire housings if they are designed to be explosion-proof in type of protection "d", flameproof enclosure, are predominantly made of metal; the transparent cover attached to this metal housing is made of glass.
  • Such a lamp is known for example from US-A 4 142 179.
  • the lamp housing is made of metal and - because it is a relatively small lamp - the cover part is made of plastic.
  • the free volume inside the luminaire housing may not exceed 3,000 cm 3 .
  • the cover part can also consist of transparent plastic. Then the area that allows the light to pass through must not be larger than 8,000 cm 2 .
  • the object of the invention is to provide a lamp of the type mentioned, in which the lamp housing and the cover are made of plastic.
  • a lamp has become known from DE-A 25 31 968 in which the housing is made of plastic.
  • the housing is completely filled with casting resin or a similar hardening plastic, the housing of the lamp according to DE-A 25 31 968 is not one that can be referred to as pressure-resistant encapsulation.
  • the free residual space between the filler parts and the electrical components inside the housing is always kept to less than 3,000 cm 3 . It can thereby be achieved that the housings previously designed as metal housings can now be manufactured from plastic, provided the wall thickness is correctly dimensioned.
  • the filling parts can be designed as carrier parts for the electrical components, or they can serve as adapters; the filler parts are then expediently made from foamed plastic. Of course, they can also consist of metal or other materials.
  • filler, sand, quartz powder or glass balls can be used, which have the advantage that the residual space to be filled can have any shape, because the sand or the quartz powder or the glass balls in their entirety have no defined space, for example surround a quarder or the like.
  • liquids can also be filled in, which is particularly advantageous when the electrical components have to be cooled. The liquid then serves as a cooling liquid.
  • the filling parts can of course also be made of ceramic, metal, or a combination of these materials.
  • the filling parts can also be used in the cover part, eg as a reflector carrier. Then they serve to limit the transparent, translucent surface of the cover part to an area of less than 8000 cm 2 . This means that the cover part can also be produced from plastic.
  • the luminaire 10 consists of a luminaire housing 11 and a cover part 12 attached to it.
  • the luminaire housing 11 is closed by means of an end wall 13, so that the housing 11 together with the end wall 13 meets the requirements of "pressure-resistant encapsulation".
  • Electrical components 14 and 15 are located within the lamp housing 11. Additional components may be present, but are not shown.
  • the volume of the interior of the luminaire housing 11 with the end wall 13, taking into account the electrical components 14 and 15, is in any case significantly greater than 3000 c m 3 .
  • the electrical components 14 and 15 are held in a carrier part 16 in which holding recesses 17 and 18 adapted to the electrical components 14 and 15 are provided.
  • a carrier upper part 21 provided with further recesses 19 and 20 is placed and the unit thus formed from the carrier lower part 16, carrier upper part 21 and the electrical components 14 and 15 embedded therein into the interior of the housing 11 used and then closed the lamp housing 11 by means of the cover wall 13.
  • the resulting residual volume 22 is more suitable Dimensioning of the two support parts 16 and 21 has a volume less than 3000 cm 3 .
  • the two support parts 16 and 21 thus serve as filler parts and are formed here from a suitable, foamed plastic and fixed in the interior of the lamp housing in a manner not shown.
  • the cover part 12 is also encapsulated in a pressure-tight manner and has therein a wall 23 on which a base 24 is fastened for holding a lamp 25; the cover part 12 with the wall 23 is encapsulated in a pressure-resistant manner.
  • the transparent surface 28 it is possible to limit the transparent surface 28 to values smaller than 8000 cm 2 by installing adapter parts, which are designed, for example, in the form of a reflector 26 or 27, as shown schematically in the drawing. This ensures that the cover 12 can no longer be made of glass, but also made of plastic.
  • the building elements can be attached to carriers. Then the rest of the room would have to be filled with filler parts.
  • these filling parts could be a liquid which easily dissipates the heat generated on the components to the outside.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Description

Die Erfindung betrifft eine Leuchte gemäß dem Oberbegriff des Anspruches 1.The invention relates to a lamp according to the preamble of claim 1.

Eine Leuchte der eingangs genannten Art besitzt ein Leuchtengehäuse, in dem die einzelnen elektrischen Bauelemente zur Versorgung der Lampe, die entweder eine Glühlampe oder eine Leuchtstofflampe sein kann, untergebracht sind. Diese Leuchtengehäuse sind dann, wenn sie explosionsgeschützt in der Zündschutzart "d", druckfeste Kapselung, ausgebildet sind, vorwiegend aus Metall hergestellt; das an diesem Metallgehäuse angebrachte transparente Abdeckteil, ist aus Glas hergestellt.A lamp of the type mentioned has a lamp housing in which the individual electrical components for supplying the lamp, which can either be an incandescent lamp or a fluorescent lamp, are housed. These luminaire housings, if they are designed to be explosion-proof in type of protection "d", flameproof enclosure, are predominantly made of metal; the transparent cover attached to this metal housing is made of glass.

Eine solche Leuchte ist beispielsweise aus der US-A 4 142 179 bekannt geworden. Bei dieser Leuchte ist das Leuchtengehäuse aus Metall und - weil es sich um eine relativ kleine Leuchte handelt - das Abdeckteil aus Kunststoff hergestellt.Such a lamp is known for example from US-A 4 142 179. With this lamp, the lamp housing is made of metal and - because it is a relatively small lamp - the cover part is made of plastic.

Wenn das Leuchtengehäuse nicht aus Metall, sondern aus Kunststoff hergestellt sein soll, dann darf das freie Volumen im Inneren des Leuchtengehäuses maximal 3.000 cm3 betragen. Natürlich kann das Abdeckteil auch aus transparentem Kunststoff bestehen. Dann darf die das Licht durchlassende Fläche nicht größer als 8.000 cm2 sein.If the luminaire housing is not to be made of metal but of plastic, then the free volume inside the luminaire housing may not exceed 3,000 cm 3 . Of course, the cover part can also consist of transparent plastic. Then the area that allows the light to pass through must not be larger than 8,000 cm 2 .

Aufgabe der Erfindung ist es, eine Leuchte der eingangs genannten Art zu schaffen, bei der das Leuchtengehäuse und das Abdeckteil aus Kunststoff hergestellt sind.The object of the invention is to provide a lamp of the type mentioned, in which the lamp housing and the cover are made of plastic.

Diese Aufgabe wird erfindungsgemäß gelöst durch die kennzeichnenden Merkmale des Anspruches 1.This object is achieved according to the invention by the characterizing features of claim 1.

Zwar ist aus der DE-A 25 31 968 eine Leuchte bekannt geworden, bei der das Gehäuse aus Kunststoff hergestellt ist. Da das Gehäuse aber vollständig mit Gießharz oder einem ähnlichen erhärtenden Kunststoff ausgegossen ist, handelt es sich bei dem Gehäuse der Leuchte nach der DE-A 25 31 968 nicht um ein solches, das als druckfeste Kapselung bezeichnet werden kann.A lamp has become known from DE-A 25 31 968 in which the housing is made of plastic. However, since the housing is completely filled with casting resin or a similar hardening plastic, the housing of the lamp according to DE-A 25 31 968 is not one that can be referred to as pressure-resistant encapsulation.

Durch das Einbringen eines großvolumigen Füllteils oder mehrerer großvolumiger Füllteile in das Leuchtengehäuse wird der freie Restraum zwischen den Füllteilen und den innerhalb des Gehäuses befindlichen elektrischen Bauelementen, gleichgültig wie groß das Leuchtengehäuse aus Kunststoff ist, immer auf weniger als 3.000 cm3 gehalten. Dadurch kann erreicht werden, daß die früher als Metallgehäuse ausgebildeten Gehäuse nunmehr aus Kunststoff gefertigt werden können, korrekte Bemessung der Wandstärke vorausgesetzt.By inserting a large-volume filler part or several large-volume filler parts into the luminaire housing, the free residual space between the filler parts and the electrical components inside the housing, regardless of how large the luminaire housing is made of plastic, is always kept to less than 3,000 cm 3 . It can thereby be achieved that the housings previously designed as metal housings can now be manufactured from plastic, provided the wall thickness is correctly dimensioned.

Die Füllteile können als Trägerteile für die elektrischen Bauelemente ausgebildet sein, oder sie können als Adapter dienen; in zweckmäßiger Weise werden dann die Füllteile aus geschäumtem Kunststoff hergestellt. Sie können natürlich auch aus Metall oder anderen Materialien bestehen. In einer besonders vorteilhaften Ausgestaltung können als Füllteile, Sand, Quarzmehl oder Glaskugeln verwendet werden, die den Vorteil haben, daß der auszufüllende Restraum jede beliebige Form haben kann, weil der Sand bzw. das Quarzmehl oder die Glaskugeln in ihrer Gesamtheit keinen definierten Raum, bspw. einen Quarder oder dergleichen umgeben. Anstatt Sand, Quarzmehl oder Glaskugeln zu verwenden, können auch Flüssigkeiten eingefüllt werden, was insbesondere dann von Vorteil ist, wenn die elektrischen Bauelemente gekühlt werden müssen. Die Flüssigkeit dient dann als Kühlflüssigkeit.The filling parts can be designed as carrier parts for the electrical components, or they can serve as adapters; the filler parts are then expediently made from foamed plastic. Of course, they can also consist of metal or other materials. In a particularly advantageous embodiment, filler, sand, quartz powder or glass balls can be used, which have the advantage that the residual space to be filled can have any shape, because the sand or the quartz powder or the glass balls in their entirety have no defined space, for example surround a quarder or the like. Instead of using sand, quartz powder or glass balls, liquids can also be filled in, which is particularly advantageous when the electrical components have to be cooled. The liquid then serves as a cooling liquid.

Die Füllteile können natürlich auch aus Keramik, Metall, oder eine Kombination dieser Werkstoffe sein.The filling parts can of course also be made of ceramic, metal, or a combination of these materials.

Die Füllteile können auch im Abdeckteil eingesetzt werden, z.B. als Reflektorträger. Dann dienen sie dazu, die transparente lichtdurchlässige Fläche des Abdeckteils auf eine Fläche von weniger als 8000cm2 zu begrenzen. Dies bewirkt, daß auch das Abdeckteil aus Kunststoff herstellbar ist.The filling parts can also be used in the cover part, eg as a reflector carrier. Then they serve to limit the transparent, translucent surface of the cover part to an area of less than 8000 cm 2 . This means that the cover part can also be produced from plastic.

Anhand der Zeichnung, in der eine vorteilhafte Ausgestaltung der Erfindung dargestellt ist, soll die Erfindung näher erläutert und beschrieben werden.The invention will be explained and described in more detail with reference to the drawing, in which an advantageous embodiment of the invention is shown.

Es zeigt:

  • Die einzige Figur eine Schnittansicht durch eine erfindungsgemäße Leuchte.
It shows:
  • The only figure is a sectional view through a lamp according to the invention.

Die Leuchte 10 besteht aus einem Leuchtengehäuse 11 und einem daran befestigten Abdeckteil 12. Das Leuchtengehäuse 11 ist mittels einer Abschlußwand 13 verschlossen, so daß das Gehäuse 11 zusammen mit der Abschlußwand 13 mit den Anforderungen "druckfeste Kapselung" entspricht.The luminaire 10 consists of a luminaire housing 11 and a cover part 12 attached to it. The luminaire housing 11 is closed by means of an end wall 13, so that the housing 11 together with the end wall 13 meets the requirements of "pressure-resistant encapsulation".

Innerhalb des Leuchtengehäuses 11 befinden sich elektrische Bauelemente 14 und 15. Weitere Bauelemente können vorhanden sein, sind jedoch nicht dargestellt. Das Volumen des Innenraumes des Leuchtengehäuses 11 mit der Abschlußwand 13 unter Berücksichtigung der elektrischen Bauelemente 14 und 15 ist in jedem Fall deutlich größer als 3000cm 3.Electrical components 14 and 15 are located within the lamp housing 11. Additional components may be present, but are not shown. The volume of the interior of the luminaire housing 11 with the end wall 13, taking into account the electrical components 14 and 15, is in any case significantly greater than 3000 c m 3 .

Die elektrischen Bauelemente 14 und 15 sind in einem Trägerteil 16 gehalten, in dem den elektrischen Bauelementen 14 und 15 angepaßte Halteausnehmungen 17 und 18 vorgesehen sind. Nach Einbau der elektrischen Bauelemente 14 und 15 in die Halteausnehmungen 17 und 18 wird ein mit weiteren Ausnehmungen 19 und 20 versehenes Trägeroberteil 21 aufgesetzt und die dadurch gebildete Einheit aus Trägerunterteil 16, Trägeroberteil 21 und den darin eingebetteten elektrischen Bauteilen 14 und 15 ins Innere des Gehäuses 11 eingesetzt und danach mittels der Abdeckwand 13 das Leuchtengehäuse 11 verschlossen. Das dadurch gebildete Restvolumen 22 hat bei geeigneter Bemessung der beiden Trägerteile 16 und 21 ein Volumen kleiner als 3000cm3.The electrical components 14 and 15 are held in a carrier part 16 in which holding recesses 17 and 18 adapted to the electrical components 14 and 15 are provided. After installation of the electrical components 14 and 15 in the holding recesses 17 and 18, a carrier upper part 21 provided with further recesses 19 and 20 is placed and the unit thus formed from the carrier lower part 16, carrier upper part 21 and the electrical components 14 and 15 embedded therein into the interior of the housing 11 used and then closed the lamp housing 11 by means of the cover wall 13. The resulting residual volume 22 is more suitable Dimensioning of the two support parts 16 and 21 has a volume less than 3000 cm 3 .

Die beiden Trägerteile 16 und 21 dienen somit als Füllteile und sind hier aus geeignetem, geschäumtem Kunststoff gebildet und im Inneren des Leuchtengehäuses in nicht näher dargestellter Weise festgelegt.The two support parts 16 and 21 thus serve as filler parts and are formed here from a suitable, foamed plastic and fixed in the interior of the lamp housing in a manner not shown.

Das Abdeckeil 12 ist ebenfalls druckfest gekapselt und besitzt darin eine Wand 23, auf der ein Sockel 24 zur Halterung einer Lampe 25 befestigt ist; auch das Abdeckteil 12 mit der Wand 23 ist druckfest gekapselt. Hier besteht die Möglichkeit, durch Einbau von Adapterteilen, die bspw. in Form eines Reflektors 26 bzw. 27 ausgebildet sind, die transparente Fläche 28 auf Werte kleiner als 8000cm2 zu begrenzen, wie in der Zeichnung schematisch dargestellt. Hierdurch wird erreicht, daß das Abdeckeil 12 nicht mehr aus Glas, sondern ebenfalls aus Kunststoff hergestellt werden kann.The cover part 12 is also encapsulated in a pressure-tight manner and has therein a wall 23 on which a base 24 is fastened for holding a lamp 25; the cover part 12 with the wall 23 is encapsulated in a pressure-resistant manner. Here it is possible to limit the transparent surface 28 to values smaller than 8000 cm 2 by installing adapter parts, which are designed, for example, in the form of a reflector 26 or 27, as shown schematically in the drawing. This ensures that the cover 12 can no longer be made of glass, but also made of plastic.

Denkbar wäre es, das jetzt noch verbliebene Restvolumen mit körnigen Füllteilen auszufüllen. Dann könnten Quarzmehl, Sand und dgl. benutzt werden.It would be conceivable to fill the remaining volume with granular filler parts. Then quartz flour, sand and the like could be used.

Anstatt die Füllteile als Trägerteile zu verwenden, können die Baulemente auf Trägern befestigt sein. Dann müßte der übrige Raum mit Füllteilen ausgefüllt werden. Zwecks guter Kühlung könnten diese Füllteile eine Flüssigkeit sein, die die an den Bauelementen entstehende Wärme leicht nach außen abführt.Instead of using the filler parts as carrier parts, the building elements can be attached to carriers. Then the rest of the room would have to be filled with filler parts. For the purpose of good cooling, these filling parts could be a liquid which easily dissipates the heat generated on the components to the outside.

Claims (4)

1. Light having a light housing (11) which forms a flameproof enclsoure, and a cover component which is mounted thereon, also forms a flameproof enclosure and consists of transparent material, having electrical components (14, 15) accomodated in the light housing (11) for the purpose of supplying at least one electrical lamp (28) in the cover component (12) with power, characterised in that the light housing (11) and the cover component (12) each consist of plastic and in that, together with the electrical components (14, 15) or the lamp (25), large-volume filler components (16, 21; 26, 27) are provided in the light housing (11) or in the cover component (12), the volume of the filler components (16, 21; 26, 27) being dimensioned in such a way that a free residual volume (22, 28) of less than 3,000 cm3 remains between the inner surface of the light housing (11) and the outer surface of the filler components (16, 21; 26, 27) and the electrical components (14, 15) and the translucent area of the cover component (12) takes up an area of less than 8,000 cm2, respectively.
2. Light according to Claim 1, characterised in that the filler components (16, 21) in the light housing serve at least partially as carrier components for the electrical components (14, 15).
3. Light according to one of the preceding claims, characterised in that the filler components consist of plastic, preferably of foamed plastic.
4. Light according to one of the preceding claims, characterised in that the filler components can have a granular shape and in that, in this case, sand, ground quartz, glass beads, thermoplastic components or thermoset components, components made of elastomer, ceramic and metal and a combination of these materials and fluids can be used.
EP87114458A 1986-10-10 1987-10-03 Explosion-proof and flame-proof light fitting with a pressure-resistant housing and a lens Expired - Lifetime EP0264039B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863634556 DE3634556A1 (en) 1986-10-10 1986-10-10 EXPLOSION- OR FLASH-PROTECTED LUMINAIRE WITH PRESSURE-ENCLOSED ENCLOSURE LIGHT HOUSING AND FIXED TRANSPARENT COVER
DE3634556 1986-10-10

Publications (4)

Publication Number Publication Date
EP0264039A2 EP0264039A2 (en) 1988-04-20
EP0264039A3 EP0264039A3 (en) 1989-07-26
EP0264039B1 true EP0264039B1 (en) 1993-03-03
EP0264039B2 EP0264039B2 (en) 1995-12-13

Family

ID=6311470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114458A Expired - Lifetime EP0264039B2 (en) 1986-10-10 1987-10-03 Explosion-proof and flame-proof light fitting with a pressure-resistant housing and a lens

Country Status (2)

Country Link
EP (1) EP0264039B2 (en)
DE (2) DE3634556A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017112146A1 (en) 2017-06-01 2018-12-06 R. Stahl Schaltgeräte GmbH Explosion-proof light
GB2573804B (en) * 2018-05-18 2022-07-27 Hubbell Ltd Driver assembly for a lighting fixture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692585C (en) * 1938-05-29 1940-06-22 Friemann & Wolf G M B H Electric safety pit light
US4142179A (en) * 1971-04-19 1979-02-27 Lowndes Roy B W Safety warning lamps for adverse or hazardous atmospheres
DE2531968C2 (en) * 1975-07-17 1986-02-13 R. Stahl Schaltgeräte GmbH, 7118 Künzelsau Explosion-proof indicator light
DE2633716C3 (en) * 1976-07-27 1980-03-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Firedamp and explosion-proof luminaire
US4388681A (en) * 1980-12-15 1983-06-14 Keene Corporation Hazardous location light fixture
DE8437802U1 (en) * 1984-12-22 1987-06-25 Hirsch, Martin, Dr., 7000 Stuttgart lamp
DE3447133A1 (en) * 1984-12-22 1986-07-03 Hirsch, Martin, Dr., 7000 Stuttgart Light

Also Published As

Publication number Publication date
EP0264039A3 (en) 1989-07-26
EP0264039B2 (en) 1995-12-13
EP0264039A2 (en) 1988-04-20
DE3784434D1 (en) 1993-04-08
DE3634556A1 (en) 1988-04-14

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