EP0611916B1 - Lampe pour fours à micro-ondes - Google Patents

Lampe pour fours à micro-ondes Download PDF

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Publication number
EP0611916B1
EP0611916B1 EP94100527A EP94100527A EP0611916B1 EP 0611916 B1 EP0611916 B1 EP 0611916B1 EP 94100527 A EP94100527 A EP 94100527A EP 94100527 A EP94100527 A EP 94100527A EP 0611916 B1 EP0611916 B1 EP 0611916B1
Authority
EP
European Patent Office
Prior art keywords
lamp
wall
opening
light according
screening element
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
EP94100527A
Other languages
German (de)
English (en)
Other versions
EP0611916A1 (fr
Inventor
Peter Dipl.-Ing. Mallinger (Fh)
Karl Richard Dipl.-Phys. Bosold
Martin Dipl.-Ing. Schulte
Thomas Maier
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE4304522A external-priority patent/DE4304522A1/de
Priority claimed from DE9311714U external-priority patent/DE9311714U1/de
Application filed by Individual filed Critical Individual
Publication of EP0611916A1 publication Critical patent/EP0611916A1/fr
Application granted granted Critical
Publication of EP0611916B1 publication Critical patent/EP0611916B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6444—Aspects relating to lighting devices in the microwave cavity
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/008—Illumination for oven cavities
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens
    • 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
    • H01R33/05—Two-pole devices
    • H01R33/46—Two-pole devices for bayonet type base

Definitions

  • the invention relates to a lamp for microwave ovens according to the preamble of claim 1.
  • the screen grating is transparent to light rays, the luminous efficiency serving to illuminate the furnace space is not negligibly impaired.
  • the shielding element in the case of a large-area luminaire opening, such as, for example, so-called linear luminaires, the shielding element must also have a large area, so that manual access to the lamp is impeded even after this shielding element has been folded out.
  • the invention has for its object to improve a lamp for microwave ovens according to the preamble of claim 1 with regard to luminous efficiency and handling and last but not least with regard to the design.
  • the light rays emanating from the lamp can get into the furnace space largely unhindered, for the most part reflected on the walls of the lamp chamber, which act as a reflector.
  • the shielding element is preferably mounted on the lamp in a foldable manner and is pressed into the closed position by the force of a spring.
  • a suitable arrangement of the shielding element e.g. With the overhead, horizontal folding axis, it is possible to do without a spring and to maintain a correct closed position at all times solely through the gravity of the shielding element.
  • a cost-saving design of the lighting device is obtained if, according to claim 10, a high-voltage halogen lamp is used as a lamp, which eliminates the need for a transformer required in commercially available low-voltage halogen lamps.
  • a transparent, specially designed cover can be placed, for example, plugged onto the lamp opening.
  • a frame is provided that has several functions.
  • This frame forms an indestructible seal through cantilevered, again frame-like spring cheeks, even at extremely high temperatures, for example in the pyrolysis mode of the microwave oven, which is also provided with thermal heating elements, which prevents the passage of vapors or steam into the luminaire chamber.
  • this frame made of spring material forms a fastening element for the cover by means of latching elements integrally connected thereto, which makes it easier Way even the layman can remove the cover from the lamp without tools.
  • the above-mentioned latching elements have a holding function in relation to an insulating frame which is captively attached to the cover and prevents arcing between the cover and the luminaire wall during microwave operation.
  • the luminaire shown in its entirety in FIGS. 1 and 2 has, as the basic element, an elongated luminaire housing 1, which moves a luminaire chamber 2, the wall 3 of which, for example, is made of aluminum material and is curved towards one side, inside a reflector for a lamp 4, preferably light rays coming from a high-voltage halogen lamp.
  • the luminaire housing 1 has a circumferential flange 5 which is part of the wall 3 and which moves around a rectangular, elongated luminaire opening 6.
  • a lamp socket, generally designated 8 is fastened with electrical connection elements 9, on the contact elements of which are not shown, the high-voltage halogen lamp 4 can be plugged inside the lamp chamber 2.
  • the lamp shown is installed in a microwave oven, not shown, that the peripheral flange 5 bears on the outside of the oven wall 10 of the microwave oven with metallic contact ( Figure 5) and in the manner described below with this
  • the furnace wall 10 is clamped, this furnace wall 10 having a corresponding opening in the area of the lamp opening 6 in a known manner.
  • the luminaire chamber 2 is thus accessible from the inside of the furnace muffle 2 for replacing the lamp 4.
  • a metallic carrier 12 is fastened to the aforementioned wall 7 of the luminaire housing 1, for example by means of rivets 11, which partially moves the insertion opening of the lamp holder 8.
  • This shielding element 14 has, for example riveted, a spring plate 15 in the region of the folding axis 13, which has a row of spring tabs 16 toward the side wall 7 is provided, which are curved and resiliently supported on the aforementioned wall 7 and thus produce an intimate metallic contact between the shielding element 14 and the lamp housing 1.
  • Immediate component of the shielding element 14 are also on both sides of the shielding element molded bearing lugs 17 for receiving the folding axis 13 and for the pivotable connection with corresponding bearing lugs, for example 18 of the support 12, with at least one of the first-mentioned bearing lugs 17 serving as a stop element, wherein in the illustrated Closed position of the shielding element 14 supports a stop edge 19 of the bearing projection 17 on a stop 20 of the carrier 12 and, conversely, after folding the shielding element 14 outside the lamp opening 6 in the direction of the arrow by an angle of approximately 45 °, an oblique stop edge 21 on a further stop 22 of the carrier 12 strikes and limits the swivel path (Figure 3). As shown in FIGS.
  • the shielding element 14 covers only a part of the lamp opening 6, specifically the position area of the lamp 4.
  • This shielding element 14 is on all sides of the edge of the lamp opening 6, with the exception of the wall 7 or carrier 12 in contact with it spaced so that the light rays emanating from the lamp can largely enter the furnace space unhindered. In-depth tests have shown that such a small-area shielding element 14 is completely sufficient to prevent the lamp 4 from being destroyed and the microwave energy escaping via the lamp holder and its parts during microwave operation.
  • the shielding element 14 is narrowed like a funnel in plan view and is designed as a dimensionally stable sheet metal part provided with perforations 23 for the passage of light, the boundary edges 24 being bent in favor of the dimensional stability. As FIG.
  • a box-like lamp housing 1 is provided with a circumferential flange 5 'which surrounds the lamp opening 6', a lamp holder with lamp being arranged in turn in the lamp chamber 2 ''.
  • the lamp is covered by a somewhat larger, hipped roof-like shielding element 14 'with recessed grip 28, which in turn is mounted on the lamp housing 1' by means of a folding axis 13 '.
  • the two free ends of the folding axis 13 are guided through corresponding openings in the wall parts 7 'and 7''so that they protrude outwards, the folding axis 13' being operatively connected on one side to a return spring 25 'and on the other hand, with a bent end of the folding axis 13 ′′ strikes a stop 22 ′ attached to the wall 7 ′′.
  • the arrangement of the above-mentioned bearing, reset and stop elements outside the lamp chamber 2 ′′ does not give rise to any microwave problems, for example with regard to arcing and the like.
  • a flexible contact sheet 29 (FIG. 7) is inserted between the folding axis 13' and the adjacent housing wall, or a corresponding spring plate connected to the folding axis 13 ', which is resiliently supported on the adjacent wall of the lamp housing 1' and as a return spring serves for the shielding element 14 '.
  • a transparent cover 30 can be placed on the luminaire housing 1 or on the luminaire opening 6.
  • a frame-like metallic plate 31 which moves around the luminaire opening 6 serves as the fastening base for this cover 30 and is congruent with the peripheral flange 5 of the lamp housing 1 is formed.
  • This plate 31 has a plurality of stud bolts 32 on the circumference, which protrude through corresponding openings in the peripheral flange 5 with the interposition of the furnace wall 10 mentioned at the beginning at the edge of the opening also mentioned in this furnace wall.
  • the aforementioned unit can be clamped to these stud bolts 32 by means of nuts.
  • the cover 30 is formed from a large-area, transparent glass plate 33, on the side facing the luminaire housing 1 of which a frame 34 made of metallic spring material is attached or fastened such that at least at two opposite ends of the frame 34, lugs 35 bent in a U-shape has that move the corresponding edges of the glass plate 33 and thus create a firm connection between the frame 34 and glass plate 33.
  • the frame 34 has a rectangular frame opening 36 corresponding approximately to the size of the lamp opening 6. On the circumference of this frame opening 36, the frame 34 has corner slots 37 of spring cheeks 38 which are separated from one another and curved in the direction of the lamp housing 1 and which are slightly curved at the free ends.
  • the frame 34 has, as one-piece components, resilient and essentially S-shaped latching elements 39 lying on two opposite frame legs, which when pressed on lock the cover 30 onto the plate 31 with corresponding counter-locking elements 40 of the plate 31.
  • the aforementioned locking elements 39 also serve to captively secure a thin insulating frame 41 made of electrically non-conductive material to the cover 30, for which purpose this insulating frame 41 according to FIG. 1 has corresponding locking recesses 42 with which the insulating frame 41 can be pressed onto the locking elements 39.
  • a shielding element 50 which partially covers the lamp opening and consists of a foldable unit, is shown.
  • the foldable unit consists of a perforated metal jacket 51 and a folding foil 52.
  • the perforations of the metal jacket 51 are optimized for a necessary microwave energy attenuation taking into account the greatest possible light transmission.
  • the kink film 52 which is arranged in the wall area of the lamp housing, is connected to the perforated metal jacket 51 by welding.
  • the buckling film 52 forms a microwave-tight closure point between the reflector wall of the lamp chamber and the perforated metal jacket 51 and thereby protects a return spring against discharges caused by field strength.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (15)

  1. Dispositif d'éclairage pour des fours à micro-ondes, comprenant une chambre d'éclairage fixée à l'enceinte du four, chambre dont la paroi sert de réflecteur et dans laquelle est disposée une douille de lampe accessible depuis l'espace intérieur du four et dans laquelle la lampe se trouvant dans ladite douille est recouverte par un élément-écran métallique -en contact avec la paroi, imperméable aux micro-ondes et disposé dans la zone de l'ouverture de sortie de lumière tournée vers l'espace intérieur du four, de manière à pouvoir être retiré de ladite ouverture, caractérisé par le fait que l'élément-écran (14) ne recouvre qu'une partie de l'ouverture de sortie de lumière (6), à savoir la zone correspondante à la position de la lampe (4), la lampe (4) n'étant pas enveloppée par l'élément-écran (14), de sorte que la lumière peut traverser librement la zone non recouverte.
  2. Dispositif d'éclairage pour des fours à micro-ondes, comprenant une chambre d'éclairage fixée à l'enceinte du four, chambre dont la paroi sert de réflecteur et dans laquelle est disposée une douille de lampe accessible depuis l'espace intérieur du four et dans laquelle la lampe se trouvant dans ladite douille est recouverte par un élément-écran métallique en contact avec la paroi, imperméable aux micro-ondes et disposé dans la zone de l'ouverture de sortie de lumière tournée vers l'espace intérieur du four, de manière à pouvoir être retiré de ladite ouverture, caractérisé par le fait que l'élément-écran (50) recouvrant partiellement l'ouverture de sortie de lumière est constitué par une unité rabattable qui est formée d'une enveloppe métallique (51) perforée et d'une feuille d'articulation par flexion (52).
  3. Dispositif d'éclairage suivant la revendication 1, caractérisé par le fait que l'élément-écran (14) se trouve de tous les côtés à distance de l'ouverture de sortie de lumière (6), excepté à l'endroit de la paroi (7) en contact avec l'élément écran.
  4. Dispositif d'éclairage suivant l'une des revendications précédentes, caractérisé par le fait que l'élément-écran (14) est muni d'ajours (23) permettant un passage de lumière.
  5. Dispositif d'éclairage suivant la revendication 4, caractérisé par le fait que l'élément-écran (14) est réalisé sous la forme d'une pièce de tôle perforée, de forme stable, et est monté de façon rabattable hors de l'ouverture de sortie de lumière (6) sur la paroi (7) de la chambre d'éclairage (2), portant la douille de lampe (8).
  6. Dispositif d'éclairage suivant la revendication 5, caractérisé par le fait que l'élément-écran (14) est monté de façon rabattable sur un support (12) métallique fixé à la paroi (7) et entourant partiellement la douille de lampe (8), et est poussé par une force de ressort (25), en position de fermeture, contre une butée (20) du support (12).
  7. Dispositif d'éclairage suivant l'une des revendications précédentes, caractérisé par le fait que l'élément-écran (14) est muni, dans la zone de l'axe, de pattes élastiques (16) bombées, entourant partiellement l'axe de rabattement (13) et s'appuyant, au moins en position de fermeture, contre la paroi voisine (7).
  8. Dispositif d'éclairage suivant l'une des revendications 1, 3 et 4, caractérisé par le fait qu'une feuille de contact (29) flexible ou une tôle de ressort faisant office de ressort de rappel est prévue entre l'axe de rabattement (13) et la paroi voisine (7).
  9. Dispositif d'éclairage suivant l'une des revendications précédentes, caractérisé par le fait que l'axe de rabattement (13) de l'élément-écran (14) traversent au moins une paroi (7') de la chambre d'éclairage et se trouve, à l'extérieur de ladite chambre, en liaison active avec des éléments produisant et/ou limitant un mouvement de rabattement dans la position de fermeture, tels que des ressorts (25'), butées (22') ou analogue.
  10. Dispositif d'éclairage suivant la revendication 9, caractérisé par le fait que l'axe de rabattement ne traverse la paroi que sur un côté et est monté, sur la paroi opposée, dans un renfoncement.
  11. Dispositif d'éclairage suivant l'une des revendications précédentes, caractérisé par le fait que la lampe (4) est une lampe halogène haut voltage.
  12. Dispositif d'éclairage suivant l'une des revendications précédentes, caractérisé par le fait que sur l'ouverture de lumière (6) est disposé de façon amovible un vitrage transparent (30) qui se compose d'une plaque de verre (33) et d'un cadre (34) en matériau élastique métallique, rapporté à demeure sur le côté tourné vers l'ouverture de sortie de lumière, lequel cadre comporte des joues élastiques (38) en porte-à-faux, constituées d'une seule pièce avec ledit cadre et entourant au moins en majeure partie l'ouverture (36) du cadre, et au moins deux éléments d'encliquetage (39) également élastiques, situés sur des branches opposées du cadre, et à l'aide desquels le vitrage (30) peut être serré contre une surface d'appui entourant l'ouverture de sortie de lumière (6) à la manière d'un cadre et munie d'éléments complémentaires d'encliquetage (40).
  13. Dispositif d'éclairage suivant la revendication 12, caractérisé par le fait qu'un cadre isolant (41), électriquement non conducteur, recouvrant le cadre (34) dans son ensemble, peut être emboîté sur les éléments d'encliquetage (39) du cadre (34).
  14. Dispositif d'éclairage suivant l'une des revendications 12 et 13, caractérisé par le fait que la surface d'appui pour le vitrage (30) est constituée par une plaque (31) métallique, entourant l'ouverture de sortie de lumière (6) à la manière d'un cadre et serrée rigidement contre un rebord périphérique (5) délimitant l'ouverture de sortie de lumière, le bord d'une ouverture prévue dans la paroi (10) de l'enceinte de four pour le dispositif d'éclairage étant, le cas échéant, intercalé entre ledit rebord et ladite plaque.
  15. Dispositif d'éclairage suivant la revendication 2, caractérisé par le fait que la feuille d'articulation par flexion (52) forme un emplacement d'obturation étanche aux micro-ondes entre la paroi formant réflecteur de la chambre d'éclairage et l'enveloppe métallique perforée (51), protégeant ainsi un ressort de rappel contre des décharges sous l'effet du champ électrique.
EP94100527A 1993-02-15 1994-01-14 Lampe pour fours à micro-ondes Expired - Lifetime EP0611916B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4304522 1993-02-15
DE4304522A DE4304522A1 (de) 1993-02-15 1993-02-15 Leuchte für Mikrowellenöfen
DE9311714U DE9311714U1 (de) 1993-08-05 1993-08-05 Leuchte für ein Mikrowellen-Haushaltgerät
DE9311714U 1993-08-05

Publications (2)

Publication Number Publication Date
EP0611916A1 EP0611916A1 (fr) 1994-08-24
EP0611916B1 true EP0611916B1 (fr) 1997-03-26

Family

ID=25923103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100527A Expired - Lifetime EP0611916B1 (fr) 1993-02-15 1994-01-14 Lampe pour fours à micro-ondes

Country Status (5)

Country Link
EP (1) EP0611916B1 (fr)
AT (1) ATE150860T1 (fr)
DE (1) DE59402182D1 (fr)
ES (1) ES2102692T3 (fr)
GR (1) GR3023639T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29601420U1 (de) * 1996-01-27 1997-05-28 AEG Hausgeräte GmbH, 90429 Nürnberg Beleuchtungsvorrichtung für den Muffelraum in Back- und Bratöfen
DE19903918B4 (de) * 1999-02-01 2009-08-13 BSH Bosch und Siemens Hausgeräte GmbH Backofenleuchte
KR100693157B1 (ko) * 2000-11-30 2007-03-13 주식회사 엘지이아이 전자레인지의 램프설치장치
KR20050056053A (ko) * 2003-12-09 2005-06-14 삼성전자주식회사 램프 조립체와 이를 구비한 조리장치
EP2128527A1 (fr) 2008-05-31 2009-12-02 Electrolux Home Products Corporation N.V. Four, plus particulièrement un four ménager
WO2024147779A1 (fr) * 2023-01-04 2024-07-11 Semtech Elektroni̇k Sanayi̇ Ve Ti̇caret A.Ş. Structure de lampe à led utilisée dans l'éclairage intérieur des fours

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8514379U1 (de) * 1985-05-15 1985-06-27 Pistor + Boss GmbH, 5880 Lüdenscheid Backofenleuchten-Abdeckglas
DE3809699A1 (de) * 1988-03-23 1989-10-05 Pistor & Boss Gmbh Elektrische leuchte fuer herde, insbesondere mikrowellengeraete
DE3928385A1 (de) * 1989-08-28 1991-03-14 Kueppersbusch Mikrowellenherd mit einem heizraum
DE4121886C2 (de) * 1991-07-02 1999-02-04 Bosch Siemens Hausgeraete Leuchte für Mikrowellenöfen

Also Published As

Publication number Publication date
DE59402182D1 (de) 1997-04-30
ATE150860T1 (de) 1997-04-15
GR3023639T3 (en) 1997-08-29
EP0611916A1 (fr) 1994-08-24
ES2102692T3 (es) 1997-08-01

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