EP0454969B1 - Dispositif d'éclairage pour un four - Google Patents

Dispositif d'éclairage pour un four Download PDF

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Publication number
EP0454969B1
EP0454969B1 EP91103303A EP91103303A EP0454969B1 EP 0454969 B1 EP0454969 B1 EP 0454969B1 EP 91103303 A EP91103303 A EP 91103303A EP 91103303 A EP91103303 A EP 91103303A EP 0454969 B1 EP0454969 B1 EP 0454969B1
Authority
EP
European Patent Office
Prior art keywords
lamp
sleeve
lamp housing
equipment according
illuminating equipment
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
EP91103303A
Other languages
German (de)
English (en)
Other versions
EP0454969A2 (fr
EP0454969A3 (en
Inventor
Johann Klement
Josef Gerl
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
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
Application filed by Individual filed Critical Individual
Publication of EP0454969A2 publication Critical patent/EP0454969A2/fr
Publication of EP0454969A3 publication Critical patent/EP0454969A3/de
Application granted granted Critical
Publication of EP0454969B1 publication Critical patent/EP0454969B1/fr
Anticipated expiration legal-status Critical
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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/65—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air the gas flowing in a closed circuit
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • 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
    • 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
    • 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

Definitions

  • the invention is based on a lighting device in a stove according to the preamble of claim 1.
  • a lamp holder with lamps is arranged vertically behind an opening in the appliance wall, the lamp axis running parallel to the appliance wall.
  • the aforementioned opening is closed by a transparent cover made of glass or plastic.
  • a lamp holder with a lamp is arranged behind an opening in the cooking space wall, the axis of which is perpendicular to the cooking space wall.
  • the opening is in turn closed by a glass cover.
  • the lamp and lamp holder are largely surrounded by a metallic sleeve, this metallic sleeve having a perforation for ventilation of the lamp area and for the exit of light rays through the perforation in the direction of a serving as a reflector part of the wall of the lamp housing.
  • the lamp is also surrounded by a perforated metallic sleeve in other known lighting devices in a microwave oven (DE-A-37 32 690; EP-A-0 310 741), the lamp or sleeve axis running parallel to the cooking chamber wall.
  • the invention has for its object to obtain effective protection of the lamp from harmful influences emanating from the oven cavity with structurally simple and spatially inexpensive means.
  • the sleeve Due to the sleeve made of transparent material and its arrangement in relation to the opening in the cooking space wall, an effective thermal barrier is obtained for the heat radiation emanating from the cooking space, at which the heat radiation is partly reflected or absorbed and is diverted to the metallic lamp housing, which The lamp housing itself is located in a relatively cool area outside the oven.
  • the sleeve can be double-sided open tube-like element or as an element that is only open on one side, it being possible in the latter case, during normal operation of the cooker, to even dispense with a cover closing the opening in the cooking space wall. In any case, it is advantageous if the sleeve at least largely covers the lamp and lamp holder.
  • a particular advantage of the lighting device according to the invention is that it can be used universally for different operating modes. It can be used for maximum temperature operation, e.g. Self-cleaning operation by pyrolysis as well as for microwave operation, provided that the sleeve is provided with a lattice-like, metallic and microwave-tight shielding, which can be done in a simple manner by means of a metallic shielding grid inserted into the sleeve or by means of metallic printing. In any case, the lamp and lamp holder are effectively protected against harmful influences from the cooking space. Last but not least, the special geometric arrangement of the lamp holder and lamp results in a very flat design.
  • Fig. 1 denotes a vertical cooking chamber wall of an oven, not shown, into which, for example, a circular opening 2 is incorporated.
  • a metallic lamp housing 4 Attached to an outwardly drawn ring flange 3 of the cooking space wall 1, for example by screws or the like, is a metallic lamp housing 4 which tightly encloses the opening in the cooking space wall and forms a housing space 5.
  • This lamp housing 4 has resilient holding elements 6 for holding onto the opening 2, made of glass or glass-like material, lens-like cover 7, the ring flange 8 of which snaps onto the holding elements 6.
  • a lamp socket 10 Attached to the lower base part 9 of the lamp housing is a lamp socket 10 of conventional design, into which a lamp 11 is inserted or screwed, the lamp axis a running parallel to the plane of the cooking space wall 1 at a distance.
  • the lamp holder 10 and lamp 11 are at least largely surrounded by a tubular sleeve 12 made of glass or glass-like material, for example plastic, which is open at both ends in the first variant and which largely allows light rays to pass through unimpeded.
  • This sleeve is shown in detail in Fig. 2.
  • a lattice-like, metallic shield 13 is incorporated in the glass material in the form of lattice-like arranged metallic wires, the ends of which extend over the lower sleeve boundary 14 protrude.
  • the entire sleeve 12 is attached to the metallic lamp holder 10, specifically in that a plurality of spring washers 15 are pressed onto these wire ends with elastic deformation, which spring washers are in contact with the wire ends and clamp or claw the bottom part of the lamp housing 4.
  • a shield 13 ' can also be produced by evaporating a suitable metal layer in a grid-like structure onto the outer surface of the sleeve 12'.
  • the passage of light through the sleeve 12, 12 ' is no longer noticeably impeded.
  • the luminous efficiency on the one hand and the thermal insulating ability of the sleeve 12 can be further improved in that the shield has a surface that reflects heat rays well, for example has a silvery surface that strongly reflects heat and light rays.
  • Fig. 1 shows that the lamp housing 4 is provided in the lower region and in the upper region with ventilation slots 16, also on the bottom part 9.
  • the sleeve 12 or 12 'on the bottom part has ventilation slots 17, as can be seen from the ventilation arrows through these ventilation slots 16, 17 relatively cool air flows into the housing space 5 of the lamp housing 4 and flows around the outside of the sleeve and through the inside and again at the top emerge. In this way, the lamp holder 10 and lamp 11 are flowed around in a very intensive manner, so that the operating heat is dissipated during lamp operation.
  • Fig. 1 it is indicated by dash-dotted lines that the sleeve 12 can also be closed at the top by an extension 18, with the exception of a ventilation opening 19 through which the aforementioned cooling air can flow upwards. In this way, an outer cover 7 can be dispensed with during normal operation of the cooker.
  • the inner surface of the lamp housing 4 can be provided with a surface that reflects light rays well and serves as a reflector.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electric Ovens (AREA)
  • Electric Stoves And Ranges (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Resistance Heating (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (9)

  1. Dispositif d'éclairage dans un four comportant un dispositif de chauffage de mets à cuire, avec une douille (10) de lampe située derrière une ouverture (2) dans la paroi (1) de l'espace de cuisson, à l'intérieur d'un boîtier (4) de lampe, pour une lampe (11) qui est au moins largement entourée d'un tube (12) transparent qui se trouve en liaison mécanique étroite avec le boîtier (4) de lampe, la douille (10) étant agencée dans le boîtier (4) de lampe de telle sorte que l'axe (a) de la lampe et du tube soit orienté au moins à peu près parallèlement à la paroi (1) de l'espace de cuisson, caractérisé en ce que le tube (12) est constitué de verre ou d'une matière transparente semblable au verre.
  2. Dispositif d'éclairage selon la revendication 1, dans un four comportant un dispositif pour le chauffage à haute fréquence des mets à cuire, caractérisé en ce que le boîtier (4) de lampe entoure, d'une manière étanche aux micro-ondes, l'ouverture (2) dans la paroi (1) de l'espace de cuisson, et en ce que le tube (12, 12') supporte un écran (13, 13') en forme de grille, métallique et étanche aux micro-ondes.
  3. Dispositif d'éclairage selon l'une des revendications 2 et 3, caractérisé en ce que l'écran (13, 13') se trouve en liaison mécanique et électriquement conductrice avec le boîtier (4) de lampe.
  4. Dispositif d'éclairage selon l'une des revendications 2 et 3, caractérisé en ce que l'écran (13, 13') présente une surface réfléchissant bien le rayonnement thermique.
  5. Dispositif d'éclairage selon l'une des revendications précédentes, caractérisé en ce que le boîtier (4) de lampe possède des grilles d'aération (16) de préférence au niveau des parties inférieures et supérieures du boîtier.
  6. Dispositif d'éclairage selon la revendication 5, caractérisé en ce que le tube (12), orienté de préférence verticalement et ouvert aux deux extrémités, possède des grilles d'aération (17) au niveau de la liaison inférieure avec le boîtier (4) de lampe.
  7. Dispositif d'éclairage selon la revendication 5, caractérisé en ce que le tube (12), orienté de préférence verticalement, est fermé à une extrémité (18) et possède des grilles d'aération (17 ; 19) au niveau de la liaison inférieure avec le boîtier (4) de lampe et au niveau de l'extrémité supérieure fermée.
  8. Dispositif d'éclairage selon l'une des revendications précédentes, caractérisé en ce que l'on dispose dans l'ouverture (2) de la paroi (1) de l'espace de cuisson un couvercle (7) transparent amovible.
  9. Dispositif d'éclairage selon l'une des revendications précédentes, caractérisé en ce que la surface intérieure du boîtier (4) de lampe est construite sous la forme d'un réflecteur.
EP91103303A 1990-05-04 1991-03-05 Dispositif d'éclairage pour un four Expired - Lifetime EP0454969B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4014360A DE4014360A1 (de) 1990-05-04 1990-05-04 Beleuchtungseinrichtung fuer einen herd
DE4014360 1990-05-04

Publications (3)

Publication Number Publication Date
EP0454969A2 EP0454969A2 (fr) 1991-11-06
EP0454969A3 EP0454969A3 (en) 1992-04-01
EP0454969B1 true EP0454969B1 (fr) 1995-05-24

Family

ID=6405721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103303A Expired - Lifetime EP0454969B1 (fr) 1990-05-04 1991-03-05 Dispositif d'éclairage pour un four

Country Status (7)

Country Link
EP (1) EP0454969B1 (fr)
JP (1) JPH04227420A (fr)
KR (1) KR910020366A (fr)
AT (1) ATE123128T1 (fr)
DE (2) DE4014360A1 (fr)
DK (1) DK0454969T3 (fr)
ES (1) ES2074596T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304522A1 (de) * 1993-02-15 1994-08-18 Bosch Siemens Hausgeraete Leuchte für Mikrowellenöfen
DE4304523A1 (de) * 1993-02-15 1994-08-18 Bosch Siemens Hausgeraete Leuchte für Backöfen
DE19748002A1 (de) 1997-10-30 1999-05-06 Bosch Siemens Hausgeraete Herd mit gekühlter Beleuchtungseinrichtung
DE19833774A1 (de) * 1998-07-27 2000-02-03 Bsh Bosch Siemens Hausgeraete Gargerät mit gekühlter Leuchte
DE10122878B4 (de) * 2001-05-11 2015-03-26 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungseinrichtung für Backöfen
DE20202558U1 (de) * 2002-02-19 2003-07-03 Zumtobel Staff GmbH & Co. KG, 32657 Lemgo Konvektionsreflektor
KR20050056053A (ko) * 2003-12-09 2005-06-14 삼성전자주식회사 램프 조립체와 이를 구비한 조리장치
DE102005044347A1 (de) 2005-09-16 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungsvorrichtung für Backöfen und Backofen
DE102009002775A1 (de) * 2009-04-30 2010-11-04 BSH Bosch und Siemens Hausgeräte GmbH Lampe für Hausgerät sowie Hausgerät, insbesondere zum Zubereiten von Lebensmitteln, mit einer Lampe
DE102012211202A1 (de) * 2012-06-28 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Geschlossene Garraumleuchte
JP6172247B2 (ja) * 2015-12-01 2017-08-02 株式会社島津製作所 ガスクロマトグラフ
CN106016201A (zh) * 2016-07-29 2016-10-12 深圳和而泰智能控制股份有限公司 Led灯具、烤箱及微波炉

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421640A (en) * 1977-07-20 1979-02-19 Matsushita Electric Ind Co Ltd High frequency heater
JPS5623606U (fr) * 1979-07-30 1981-03-03
DE3732690A1 (de) * 1987-09-29 1989-04-13 Licentia Gmbh Beleuchtungseinrichtung zum ausleuchten des garraumes eines mikrowellenherdes
DE8713264U1 (de) * 1987-10-02 1987-12-03 Hurst & Schröder GmbH, 5980 Werdohl Herdleuchte für einen Mikrowellenherd

Also Published As

Publication number Publication date
JPH04227420A (ja) 1992-08-17
EP0454969A2 (fr) 1991-11-06
DE59105555D1 (de) 1995-06-29
EP0454969A3 (en) 1992-04-01
ES2074596T3 (es) 1995-09-16
DK0454969T3 (da) 1995-10-16
ATE123128T1 (de) 1995-06-15
DE4014360A1 (de) 1991-11-07
KR910020366A (ko) 1991-12-20

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