EP0264039A2 - 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
EP0264039A2
EP0264039A2 EP87114458A EP87114458A EP0264039A2 EP 0264039 A2 EP0264039 A2 EP 0264039A2 EP 87114458 A EP87114458 A EP 87114458A EP 87114458 A EP87114458 A EP 87114458A EP 0264039 A2 EP0264039 A2 EP 0264039A2
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EP
European Patent Office
Prior art keywords
parts
electrical components
housing
light fitting
volume
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
EP87114458A
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German (de)
French (fr)
Other versions
EP0264039B1 (en
EP0264039A3 (en
EP0264039B2 (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
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ABB Ceag Licht und Stromversorgungstechnik GmbH
CEAG Licht und Stromversorgungstechnik GmbH
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Application filed by ABB Ceag Licht und Stromversorgungstechnik GmbH, 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
Publication of EP0264039B1 publication Critical patent/EP0264039B1/en
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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

  • 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.
  • the free volume inside the luminaire housing must not exceed 3000 cm3 be.
  • the cover part can also consist of transparent plastic. Then the area that allows the light to pass through must not be larger than 8000 cm2.
  • the object of the invention is to provide a lamp of the type mentioned, in which the lamp housing is made of plastic.
  • 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 has any shape can because the sand or the quartz powder or the glass balls in their entirety do not surround a defined space, for example 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, e.g. as a reflector carrier. Then they serve to limit the transparent, translucent surface of the cover part to an area of less than 8000 cm2. This means that the cover part can also be produced from plastic.
  • the only figure is a sectional view through a lamp according to the invention.
  • 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 lamp housing 11 with the end wall 13 taking into account the electrical components 14 and 15 is in any case significantly greater than 3000 cm3.
  • 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 formed thereby 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 residual volume 22 formed in this way has a volume of less than 3000 cm 3 if the two carrier parts 16 and 22 are suitably dimensioned.
  • the two carrier 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.
  • adapter parts for example in the form of a reflector 26 or 27 are designed to limit the transparent surface 28 to values smaller than 8000 cm2, 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 filler parts could be a liquid that easily dissipates the heat generated on the components to the outside.

Abstract

A light fitting is constructed from a light fitting housing (11) encapsulated in a pressure-resistant fashion and a over part (12) which is fastened thereto and likewise encapsulated in a pressure-resistant fashion. Electrical components (14, 15) for supplying one or more lamps (25) arranged in the over part (12) are accommodated in the light fitting housing (11). In order to enable the light fitting housing (11) to be made from plastic instead of metal, high-volume filling parts (16, 21) are provided together with the electrical components (14, 15) in the light fitting housing (11). The volume of the filling parts (16, 21) is dimensioned such that a free residual volume (22, 28) of less than 3000 cm<3> remains between the inner surface of the light fitting housing (11) consisting of plastic and the outer surface of the filling parts and the electrical components (14, 15). <IMAGE>

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.

Wenn das Leuchtengehäuse nicht aus Metall sondern aus Kunststoff hergestellt sein soll, dann darf das freie Volumen im Inneren des Leuchtengehäuses maximal 3000 cm³ betragen. Natürlich kann das Abdeckteil auch aus trans­parentem Kunststoff bestehen. Dann darf die das Licht durchlassende Fläche nicht größer als 8000cm² sein.If the luminaire housing is not to be made of metal but of plastic, then the free volume inside the luminaire housing must not exceed 3000 cm³ be. 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 8000 cm².

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

Dieses 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.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention can be found in the subclaims.

Durch das Einbringen eines großvolumigen Füllteiles 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 3000cm³ 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 3000 cm³. 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 has any shape can because the sand or the quartz powder or the glass balls in their entirety do not surround a defined space, for example 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, e.g. as a reflector carrier. Then they serve to limit the transparent, translucent surface of the cover part to an area of less than 8000 cm². 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:It shows:

Die einzige Figur eine Schnittansicht durch eine erfin­dungsgemäße Leuchte.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 3000cm³.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 lamp housing 11 with the end wall 13 taking into account the electrical components 14 and 15 is in any case significantly greater than 3000 cm³.

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 22 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 formed thereby 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 residual volume 22 formed in this way has a volume of less than 3000 cm 3 if the two carrier parts 16 and 22 are suitably dimensioned.

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 carrier 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. There is the possibility here by installing adapter parts, for example in the form of a reflector 26 or 27 are designed to limit the transparent surface 28 to values smaller than 8000 cm², 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 filler parts could be a liquid that easily dissipates the heat generated on the components to the outside.

Claims (4)

1. Leuchte mit druckfest gekapseltem Leuchtenge­häuse und daran befestigtem, ebenfalls druckfest gekap­seltem Abdeckteil, mit im Leuchtengehäuse unterge­brachten elektrischen Bauteilen zur Versorgung einer oder mehrerer im Abdeckteil angeordneter Lampen, dadurch gekennzeichnet, daß zusammen mit den elektrischen Bau­elementen (14, 15) bzw. der Lampe (25) großvolumige Füllteile (16, 21, 26, 27) im Leuchtengehäuse (11) bzw. im Abdeckteil (12) vorgesehen sind, wobei das Volumen der Füllteile (16, 21; 26, 27) so bemessen ist, daß zwi­schen der Innenfläche des aus Kunststoff bestehenden Leuchtengehäuses (11) und der Außenfläche der Füllteile und der elektrischen Bauelemente (14, 15) eine freies Restvolumen (22, 28) von weniger als 3000cm³ verbleibt bzw. der lichtdurchlässige Bereich des Abdeckteiles eine Fläche von weniger als 8000cm² einnimmt.1. Luminaire with flameproof encapsulated luminaire housing and attached, also flameproof encapsulated cover part, with electrical components housed in the luminaire housing for supplying one or more lamps arranged in the cover part, characterized in that together with the electrical components (14, 15) or the lamp (25) large-volume filler parts (16, 21, 26, 27) are provided in the lamp housing (11) or in the cover part (12), the volume of the filler parts (16, 21; 26, 27) being such that between the Inside surface of the plastic housing (11) and the outer surface of the filler parts and the electrical components (14, 15) a free residual volume (22, 28) of less than 3000cm³ remains or the translucent area of the cover part occupies an area of less than 8000cm² . 2. Leuchte nach Anspruch 1, dadurch gekennzeichnet, daß die Füllteile (16, 21) zumindest teilweise als Trä­gerteile für die elektrischen Bauelemente (14, 15) die­nen.2. Luminaire according to claim 1, characterized in that the filling parts (16, 21) serve at least partially as carrier parts for the electrical components (14, 15). 3. Leuchte nach einem der vorigen Ansprüche, da­durch gekennzeichnet, daß die Füllteile aus Kunststoff, vorzugsweise aus geschäumtem Kunststoff, bestehen.3. Luminaire according to one of the preceding claims, characterized in that the filling parts made of plastic, preferably made of foamed plastic. 4. Leuchte nach einem der Ansprüche 1 bis 3, da­durch gekennzeichnet, daß die Füllteile eine Körnerform besitzen und daß dabei Sand, Quarzmehl, Glaskugeln, Thermo- oder Duroplastteile, Teile aus Elastomer, Kera­mik und Metall sowie eine Kombination dieser Werkstoffe und Flüssigkeiten Verwendung finden.4. Lamp according to one of claims 1 to 3, characterized in that the filling parts have a grain shape and that sand, quartz powder, glass balls, thermoplastic or thermoset parts, parts made of elastomer, ceramic and metal and a combination of these materials and liquids are 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
DE3634556 1986-10-10
DE19863634556 DE3634556A1 (en) 1986-10-10 1986-10-10 EXPLOSION- OR FLASH-PROTECTED LUMINAIRE WITH PRESSURE-ENCLOSED ENCLOSURE LIGHT HOUSING AND FIXED TRANSPARENT COVER

Publications (4)

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

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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

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019220133A1 (en) * 2018-05-18 2019-11-21 Hubbell Limited Driver assembly for a lighting fixture

Families Citing this family (1)

* 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

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE2531968A1 (en) * 1975-07-17 1977-02-03 Stahl Niederlassung Kuenzelsau Explosion proofed lighting unit with protected interior - has solid state light source and housing filled with cast resin material
DE2633716A1 (en) * 1976-07-27 1978-02-02 Siemens Ag Explosion proof lamp for underground mines - includes constant voltage transformer with connections to fluorescent tube located in separate housing section
US4142179A (en) * 1971-04-19 1979-02-27 Lowndes Roy B W Safety warning lamps for adverse or hazardous atmospheres
GB2089489A (en) * 1980-12-15 1982-06-23 Keene Corp A lighting fitting
DE3447133A1 (en) * 1984-12-22 1986-07-03 Hirsch, Martin, Dr., 7000 Stuttgart Light

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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
DE8437802U1 (en) * 1984-12-22 1987-06-25 Hirsch, Martin, Dr., 7000 Stuttgart, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142179A (en) * 1971-04-19 1979-02-27 Lowndes Roy B W Safety warning lamps for adverse or hazardous atmospheres
DE2531968A1 (en) * 1975-07-17 1977-02-03 Stahl Niederlassung Kuenzelsau Explosion proofed lighting unit with protected interior - has solid state light source and housing filled with cast resin material
DE2633716A1 (en) * 1976-07-27 1978-02-02 Siemens Ag Explosion proof lamp for underground mines - includes constant voltage transformer with connections to fluorescent tube located in separate housing section
GB2089489A (en) * 1980-12-15 1982-06-23 Keene Corp A lighting fitting
DE3447133A1 (en) * 1984-12-22 1986-07-03 Hirsch, Martin, Dr., 7000 Stuttgart Light

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019220133A1 (en) * 2018-05-18 2019-11-21 Hubbell Limited Driver assembly for a lighting fixture
CN112673209A (en) * 2018-05-18 2021-04-16 豪倍有限公司 Driver assembly for a lighting fixture
US11306909B2 (en) 2018-05-18 2022-04-19 Hubbell Limited Driver assembly for a lighting fixture
CN112673209B (en) * 2018-05-18 2022-09-06 豪倍有限公司 Driver assembly for a lighting fixture

Also Published As

Publication number Publication date
DE3634556A1 (en) 1988-04-14
EP0264039B1 (en) 1993-03-03
DE3784434D1 (en) 1993-04-08
EP0264039A3 (en) 1989-07-26
EP0264039B2 (en) 1995-12-13

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