EP0036646A1 - Projecteur antidéflagrant - Google Patents

Projecteur antidéflagrant Download PDF

Info

Publication number
EP0036646A1
EP0036646A1 EP81102112A EP81102112A EP0036646A1 EP 0036646 A1 EP0036646 A1 EP 0036646A1 EP 81102112 A EP81102112 A EP 81102112A EP 81102112 A EP81102112 A EP 81102112A EP 0036646 A1 EP0036646 A1 EP 0036646A1
Authority
EP
European Patent Office
Prior art keywords
headlamp
housing
explosion
proof
holding frame
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.)
Withdrawn
Application number
EP81102112A
Other languages
German (de)
English (en)
Inventor
Georg F. Pawlowski
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.)
Adolf Schuch KG Lichttechnische Spezialfabrik
Original Assignee
Adolf Schuch KG Lichttechnische Spezialfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adolf Schuch KG Lichttechnische Spezialfabrik filed Critical Adolf Schuch KG Lichttechnische Spezialfabrik
Publication of EP0036646A1 publication Critical patent/EP0036646A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a headlamp in explosion-proof, flameproof encapsulated housing design with a light exit surface in a glass holding frame.
  • the glass holding frame with the light exit surface is attached to the headlamp housing so as to be easily detachable, so that, if necessary, quick access to the lamp arranged in the housing is achieved.
  • Screw connections of the glass holder frame to the housing are detachable fastenings, known as a hinged, hinged glass holding frame and such frames that can be slid into the headlight housing by means of suitable groove fits.
  • All three types of construction have the disadvantage that they have to be provided with large, very complicated and costly to produce fitting surfaces if the regulations of the type of protection "flameproof encapsulation" are to be observed. Not only is it expensive to manufacture these mating surfaces, but the entire structure of the headlamp must also be very expensive, so that the mating surfaces do not warp when the headlamp housing is heated and the pressure-tight encapsulation leaks.
  • the present invention has for its object to develop a headlamp in explosion-proof design that manages with extremely small mating surfaces, without thereby making access to the interior of the housing difficult when changing the lamp.
  • the new headlamp is said to be substantially less complicated and cheaper to manufacture and to better meet the requirements for the “pressure-tight encapsulation” protection class even under extreme operating conditions.
  • the glass holder name is firmly connected to the headlight housing and that the headlight housing has a laterally arranged opening which is closed by an openable cover in the "flameproof enclosure” version.
  • the glass holding frame no longer has to be detached from the headlamp housing when the lamp is changed, since the lamp change is carried out by in the side wall of the headlamp housing intended opening can be carried out.
  • This opening has much smaller dimensions than the glass holding frame, so that the flameproof encapsulation between the cover closing this opening and the headlight housing can be manufactured much easier and therefore cheaper than was possible between the glass holding frame and the headlight housing in the known headlights.
  • the cover of the opening in the side wall of the housing is either designed as a threaded screw cover or is provided with a bayonet lock, the flange edge of the cover having a circumferentially closed mating surface which interacts with the headlight housing underneath.
  • the headlight shown in the drawing has a housing 10, the front of which is covered by a light exit surface 11 which is held in a glass holding frame 12.
  • the abutting surfaces of the front of the housing 10 and the holding frame 12 are designed as mating surfaces and by screws 13 firmly connected so that there is a seal between the housing and the holding frame according to the regulations for "flameproof encapsulation".
  • a lamp holder 14 with a lamp 15 is arranged on one of the side walls of the housing 10 (FIG. 2) and an opening 16 is provided in the opposite side wall.
  • the opening 16 is circular and is dimensioned such that the lamp 15 can be replaced through the opening by hand or an appropriate tool.
  • the opening 16 is closed by a cover 17 in the form of a threaded screw cover.
  • the length of the screw thread 18 in the screw cover 17 and the housing wall 10 is dimensioned such that the ignition lock required for the “pressure-tight encapsulation” type of protection is achieved.
  • An additional elastic seal 20 inserted under the flange 19 of the screw cap 17 protects the interior of the housing from the ingress of dust and water.
  • a cover with a bayonet lock can also be used, the flange edge 19 of which has a circumferentially closed fitting surface which interacts with the underlying headlight housing 10.
  • Such a mating surface is much smaller and easier to manufacture than the mating surfaces between the housing 10 and the glass holding frame 12 in the known explosion-protected headlights.
  • the headlamp is to be used in an extremely aggressive atmosphere, it is advisable to additionally protect the screwed sealing surfaces between the housing 10 and the glass holding frame 12 against corrosion. This can in that the edge joint between the housing 10 and the glass holding frame 12 is filled all round with an elastic sealing compound 21 which is resistant to the aggressive media.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP81102112A 1980-03-26 1981-03-20 Projecteur antidéflagrant Withdrawn EP0036646A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3011607 1980-03-26
DE19803011607 DE3011607A1 (de) 1980-03-26 1980-03-26 Scheinwerfer in exploxionsgeschuetzter ausfuehrung

Publications (1)

Publication Number Publication Date
EP0036646A1 true EP0036646A1 (fr) 1981-09-30

Family

ID=6098341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102112A Withdrawn EP0036646A1 (fr) 1980-03-26 1981-03-20 Projecteur antidéflagrant

Country Status (2)

Country Link
EP (1) EP0036646A1 (fr)
DE (1) DE3011607A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549307A1 (fr) * 1983-07-11 1985-01-18 Senay Michel Appareil electrique, notamment projecteur d'eclairage, pour utilisation en milieu marin et en atmosphere explosive
FR2551304A1 (fr) * 1983-08-26 1985-03-01 Senay Michel Joint pour appareil electrique, notamment projecteur d'eclairage, pour utilisation en milieu marin et en atmosphere explosive

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111336450A (zh) * 2020-04-16 2020-06-26 广东亚宏铝业有限公司 多功能防爆探照灯

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056718A (en) * 1976-03-08 1977-11-01 Phoenix Products Company, Inc. Heavy duty floodlight fixture
US4069415A (en) * 1977-01-07 1978-01-17 Control Products Inc. High intensity discharge lamp for use in explosive atmospheres such as mines
US4158880A (en) * 1977-07-25 1979-06-19 Mcjunkin Corporation Mine machine light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056718A (en) * 1976-03-08 1977-11-01 Phoenix Products Company, Inc. Heavy duty floodlight fixture
US4069415A (en) * 1977-01-07 1978-01-17 Control Products Inc. High intensity discharge lamp for use in explosive atmospheres such as mines
US4158880A (en) * 1977-07-25 1979-06-19 Mcjunkin Corporation Mine machine light

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549307A1 (fr) * 1983-07-11 1985-01-18 Senay Michel Appareil electrique, notamment projecteur d'eclairage, pour utilisation en milieu marin et en atmosphere explosive
FR2551304A1 (fr) * 1983-08-26 1985-03-01 Senay Michel Joint pour appareil electrique, notamment projecteur d'eclairage, pour utilisation en milieu marin et en atmosphere explosive

Also Published As

Publication number Publication date
DE3011607A1 (de) 1981-10-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820905

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PAWLOWSKI, GEORG F.