EP0683367A1 - Lampenfassungsbefestigung für ein Kühlgerät - Google Patents

Lampenfassungsbefestigung für ein Kühlgerät Download PDF

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Publication number
EP0683367A1
EP0683367A1 EP95105811A EP95105811A EP0683367A1 EP 0683367 A1 EP0683367 A1 EP 0683367A1 EP 95105811 A EP95105811 A EP 95105811A EP 95105811 A EP95105811 A EP 95105811A EP 0683367 A1 EP0683367 A1 EP 0683367A1
Authority
EP
European Patent Office
Prior art keywords
lamp
holding fixture
opening
contact
terminal
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
EP95105811A
Other languages
English (en)
French (fr)
Other versions
EP0683367B1 (de
Inventor
Luigi Paroni
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.)
Electrolux Zanussi SpA
Original Assignee
Electrolux Zanussi Elettrodomestici SpA
Zanussi Elettromeccanica SpA
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 Electrolux Zanussi Elettrodomestici SpA, Zanussi Elettromeccanica SpA filed Critical Electrolux Zanussi Elettrodomestici SpA
Publication of EP0683367A1 publication Critical patent/EP0683367A1/de
Application granted granted Critical
Publication of EP0683367B1 publication Critical patent/EP0683367B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/965—Dustproof, splashproof, drip-proof, waterproof, or flameproof holders
    • H01R33/9651—Dustproof, splashproof, drip-proof, waterproof, or flameproof holders for screw type coupling devices
    • H01R33/9653—Dustproof, splashproof, drip-proof, waterproof, or flameproof holders for screw type coupling devices neither pole becoming electrically connected until the coupling parts are substantially engaged
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D27/00—Lighting arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H01R13/453—Shutter or cover plate opened by engagement of counterpart
    • H01R13/4534—Laterally sliding shutter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/945—Holders with built-in electrical component
    • H01R33/96—Holders with built-in electrical component with switch operated by engagement or disengagement of coupling
    • H01R33/962—Holders with built-in electrical component with switch operated by engagement or disengagement of coupling for screw type coupling devices

Definitions

  • the present invention refers to an improved type of refrigeration apparatus provided with an improved internal lighting device arranged inside the food storage compartment.
  • the present invention refers to all types of refrigeration apparatuses, particularly of the household or residential type, which are provided with at least a food storage compartment, a lamp for the internal lighting of said food storage compartment, a related lamp-holding fixture, and a refrigerating circuit, of which a portion, typically the evaporator, is at least partly housed inside said food storage compartment, said refrigerating circuit being filled with an inflammable gas, such as for instance methane or butane.
  • an inflammable gas such as for instance methane or butane.
  • refrigeration appliances have been developed in which the refrigerant or working fluid is made up by a gas or a mixture of gases that do not feature any significant ozone-depletion potential, but are in many cases inflammable.
  • terminals that supply the power to said lamps are to be given such an explosion-proof quality, which is an obvious consideration since it would be perfectly useless to adopt explosion-proof lamps, if their power-supply terminals are anyway capable of triggering an explosion, then such terminals shall be unremovably locked or fixed to the lamp's own terminals or the screw attachment or cap thereof, so as to positively exclude the possibility of sparks being ever generated.
  • the lead wire that branches off said terminals shall be in turn connected to the power delivering points within the refrigeration apparatus in such a manner as to ensure full safety as far as said explosion hazards are concerned.
  • the refrigeration apparatus should of course be capable of keeping operating. In such a case, the presence of live terminals which become exposed through the removal of the lamp would undoubtedly constitute a hazardous situation.
  • a refrigeration apparatus such as in particular a household refrigerator or freezer, which is equipped with a lamp and a related lamp-holding fixture, both of them in an explosion-proof construction, wherein the lamp is readily removable from its holding fixture even by relatively unskilled persons, whereas the lamp-holding fixture itself cannot represent a hazard situation even when the lamp is removed therefrom, without this involving a more complicated construction or the use of new, not readily available techniques, while keeping production costs at a quite low level.
  • the devised solution to the afore cited problems substantially consists in providing a lamp-holding fixture 1 having a box-like, sealed construction, with a single recess 2 provided for the insertion of the cap 3 of the lamp 4.
  • Said cap is provided with at least an electric power-supply terminal for the lamp, and the contact between said terminal and the corresponding power-supply member occurs in a sealed chamber which is impervious to the gas around it and is a part of said lamp-holding fixture, said electric contacts between the lamp terminals and the corresponding power supply terminals taking therefore place in the inner volume of said chamber.
  • said cap is provided With two prominent, parallel terminals 5, 6 connected to the lighting element (not shown) inside the lamp.
  • said lamp-holding fixture On a closed wall 7 arranged in front of said recess 2, said lamp-holding fixture is provided with two guiding provisions 8, 9, having preferably a conical shape and arranged at an equal distance with respect to said respective terminals 5, 6.
  • Each one of said two guiding provisions 8, 9 terminates with a small opening 10, 11, respectively, which is just sized to allow for the passage therethrough of the respective terminal of the lamp, whereas beyond said opening there is arranged a shiftable element 12, 13, respectively, adapted to close the respective opening 10, 11 by displacing transversally with respect to the respective opening owing to the action of a respective spring element 14, 15.
  • respective contact elements 18, 19 having preferably the form of an elastic blade, in such a position as to be able to come into contact with said respective terminals when inserted full-depth in the respective openings.
  • said element are provided, on their end portion facing the lamp, with two respective guiding provisions 20, 21, which are preferably made by bending the corresponding contact elements accordingly, the latter being firmly connected to the power-supply lead wires.
  • said shiftable elements 12, 13 are provided, in correspondence of their portion closing said corresponding openings, with respective oblique sides 22, 23 facing said respective openings.
  • the box-shaped lamp-holding fixture 1 has therefore a fully sealed construction and, when applied on to the inner wall of the food storage compartment that must be lighted, it further seals up in an air-tight manner its inner volume, with particular reference to its inner volume 25 that houses the contact surfaces of said terminals and said corresponding contact elements 18, 19.
  • Such a ring is elastic and preferably made of an elastomeric material, so that, when the lamp is removed, the two shiftable elements 12 and 13, by moving forward due to the action of their respective spring elements, go pushing against said sealing ring 26, thereby ensuring a perfectly air-tight sealing of said inner volume 25.
  • a second embodiment of the present invention is illustrated in the Figures 4 to 6.
  • the inner air-tight volume 25 of the lamp-holding fixture can be seen to contain a first moving electric terminal 31 which is substantially cylindrical in its shape and passes slidingly through an appropriate air-tightly sealable opening of said inner volume, said terminal being further adapted to come into contact with the lower contact point 32 of a traditional screw-attachment type lamp which is screwed on a corresponding threaded attachment 33 in a traditional manner.
  • Said opposite end is adapted to be shifted by an elastic relief 38 which is a part of the elements provided to ensure air-tight sealing of the inner volume 25, said elastic relief 38 being in turn shiftable by a moving element 39 actuated by the door-actuated switch.
  • Said second electric contact 31B enters said inner volume 25 through and elastic air-tight sealing gasket 50, while, inside said inner volume 25, the other end portion of said electric contact 31B is capable of coming into releasable contact with a conductor 45B connected to the other polarity of the power supply.
  • Said elastic air-tight sealing gasket and said electric contacts 31B and 45B are arranged and shaped in such a manner as to ensure that, when the lamp is fully screwed in, its threaded portion 33 establishes a contact with said electric contact 31B and pushes it so that the latter, by moving inwards, ultimately establishes a contact, with its opposite end portion, with the conductor 45B.
  • the outer portion 40 of the recess provided to accomodate the lamp is made of an elastic material and is in the shape of an inwardly oriented frustum of a cone. Additionally, the inside diameter of said outer portion 40 for the passage of the lamp is so sized as to be able to elastically interfere with the bulb of the lamp when the latter is being screwed on into its seat, so that an inflammable atmosphere being possibly present in the compartment is positively prevented from reaching the attachment edge 41 between the bulb of the lamp and the cap 42 thereof.
  • the points of mutual contact between live conductors are between the contact 31B and the conductor 45B, as well as between the passing-through terminal 31 and the terminal 35, ie. both of them occur within the inner volume 25 so as to ensure a complete isolation from the outside atmosphere, excluding all related hazards even in the case of sparks being generated between said electric contacts.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP95105811A 1994-05-20 1995-04-19 Lampenfassungsbefestigung für ein Kühlgerät Expired - Lifetime EP0683367B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT94PN000030A IT1267720B1 (it) 1994-05-20 1994-05-20 Apparecchio frigorifero con porta-lampada perfezionato
ITPN940030 1994-05-20

Publications (2)

Publication Number Publication Date
EP0683367A1 true EP0683367A1 (de) 1995-11-22
EP0683367B1 EP0683367B1 (de) 2000-01-19

Family

ID=11394907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105811A Expired - Lifetime EP0683367B1 (de) 1994-05-20 1995-04-19 Lampenfassungsbefestigung für ein Kühlgerät

Country Status (6)

Country Link
EP (1) EP0683367B1 (de)
CN (1) CN1073688C (de)
DE (1) DE69514566T2 (de)
DK (1) DK0683367T3 (de)
ES (1) ES2144064T3 (de)
IT (1) IT1267720B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744792A3 (de) * 1995-05-26 1997-07-30 Gabriele Centazzo Unfallsichere Lampenfassung
EP1640681A1 (de) * 2003-06-30 2006-03-29 Sanyo Electric Co., Ltd. Innenleuchtenfassung und kühlschrank
EP2023446A1 (de) 2007-08-08 2009-02-11 Gjm, S.A. Nicht-Bajonett-Lampensockel für Fahrzeugscheinwerfer
US9841223B2 (en) 2014-12-01 2017-12-12 Samsung Electronics Co., Ltd. Refrigerator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101469809B (zh) * 2007-12-29 2011-03-23 海洋王照明科技股份有限公司 一种微型防爆头灯
DE102011083080B4 (de) * 2011-09-20 2016-05-04 Siemens Schweiz Ag Sockel zur Aufnahme eines Gefahrenmelders, Gefahrenmelder zum Einsetzen in einen derartigen Sockel sowie Gefahrenmeldeanlage mit einem derartigen Sockel und Gefahrenmelder
CN104613428A (zh) * 2015-01-29 2015-05-13 宁波泰格莱特灯具有限公司 Led灯安装结构
CN107702030A (zh) * 2017-09-28 2018-02-16 谢志坚 一种隧道施工照明装置
CN110953503B (zh) * 2019-11-11 2021-07-16 朱辰 一种广场灯具

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104164A (en) * 1934-12-28 1938-01-04 Ranco Inc Refrigerator door lamp switch
FR2498830A1 (fr) * 1981-01-26 1982-07-30 Delaite Alain Prise electrique haute securite
DE3515860A1 (de) * 1985-05-03 1986-11-06 Walter-Helmut 3005 Hemmingen Heitz Lampenfassung
EP0320875A2 (de) * 1987-12-15 1989-06-21 Bosch-Siemens HausgerÀ¤te GmbH Elektrische Beleuchtungseinrichtung für Hausgeräte, wie Backöfen
DE4208144A1 (de) * 1991-03-13 1992-09-17 Zanussi Elettrodomestici Kuehlgeraet mit verbesserter lampenhalterung
GB2264402A (en) * 1992-01-25 1993-08-25 Carodon Mk Electric Ltd Two-component lampholder
EP0579068A1 (de) * 1992-07-13 1994-01-19 Whirlpool Europe B.V. Lampenfassungseinheit, inbesondere für Kühlschränke und dergleichen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104164A (en) * 1934-12-28 1938-01-04 Ranco Inc Refrigerator door lamp switch
FR2498830A1 (fr) * 1981-01-26 1982-07-30 Delaite Alain Prise electrique haute securite
DE3515860A1 (de) * 1985-05-03 1986-11-06 Walter-Helmut 3005 Hemmingen Heitz Lampenfassung
EP0320875A2 (de) * 1987-12-15 1989-06-21 Bosch-Siemens HausgerÀ¤te GmbH Elektrische Beleuchtungseinrichtung für Hausgeräte, wie Backöfen
DE4208144A1 (de) * 1991-03-13 1992-09-17 Zanussi Elettrodomestici Kuehlgeraet mit verbesserter lampenhalterung
GB2264402A (en) * 1992-01-25 1993-08-25 Carodon Mk Electric Ltd Two-component lampholder
EP0579068A1 (de) * 1992-07-13 1994-01-19 Whirlpool Europe B.V. Lampenfassungseinheit, inbesondere für Kühlschränke und dergleichen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744792A3 (de) * 1995-05-26 1997-07-30 Gabriele Centazzo Unfallsichere Lampenfassung
EP1640681A1 (de) * 2003-06-30 2006-03-29 Sanyo Electric Co., Ltd. Innenleuchtenfassung und kühlschrank
EP1640681A4 (de) * 2003-06-30 2012-04-25 Sanyo Electric Co Innenleuchtenfassung und kühlschrank
EP2023446A1 (de) 2007-08-08 2009-02-11 Gjm, S.A. Nicht-Bajonett-Lampensockel für Fahrzeugscheinwerfer
US9841223B2 (en) 2014-12-01 2017-12-12 Samsung Electronics Co., Ltd. Refrigerator

Also Published As

Publication number Publication date
CN1073688C (zh) 2001-10-24
DE69514566T2 (de) 2000-09-14
ITPN940030A0 (it) 1994-05-20
DK0683367T3 (da) 2000-04-17
EP0683367B1 (de) 2000-01-19
ITPN940030A1 (it) 1995-11-20
IT1267720B1 (it) 1997-02-07
ES2144064T3 (es) 2000-06-01
DE69514566D1 (de) 2000-02-24
CN1126818A (zh) 1996-07-17

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