EP2942569A1 - Table de cuisson dotée d'une plaque de cuisson et rayonnement lumineux sur le bord - Google Patents

Table de cuisson dotée d'une plaque de cuisson et rayonnement lumineux sur le bord Download PDF

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Publication number
EP2942569A1
EP2942569A1 EP15164353.3A EP15164353A EP2942569A1 EP 2942569 A1 EP2942569 A1 EP 2942569A1 EP 15164353 A EP15164353 A EP 15164353A EP 2942569 A1 EP2942569 A1 EP 2942569A1
Authority
EP
European Patent Office
Prior art keywords
hob
light
plate
hob plate
edge
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
EP15164353.3A
Other languages
German (de)
English (en)
Other versions
EP2942569B1 (fr
Inventor
Alexander Wagner
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2942569A1 publication Critical patent/EP2942569A1/fr
Application granted granted Critical
Publication of EP2942569B1 publication Critical patent/EP2942569B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24C15/10—Tops, e.g. hot plates; Rings

Definitions

  • the invention relates to a hob with a hob plate and a lighting device having at least one light source, which is arranged such that light of the light source can be coupled via a lateral edge of the hob plate in the hob plate.
  • this hob plate is formed of glass ceramic, which is then functionally designed as a light guide.
  • the light sources are spaced therefrom to this narrow lateral edge of the hob plate, and their Hauptabstrahlraum is formed perpendicular to the strictly rectilinear vertical contour profile of the edge.
  • a hob with a lateral light radiation from the EP 1 376 872 B1 known.
  • the light of a light source at the narrow edge is coupled into the hob plate and propagates in this under multiple total reflection.
  • This coupled light is totally reflected in it over the entire dimensions of the cooktop panel and reaches a scatter zone, where it is then scattered so that it emerges from a button and thus this button appears bright to the environment.
  • the light of the light source is directed to the edge as obtuse as possible.
  • a reflective coating is provided by which is to be achieved that the light of the light source enters the cooktop panel as much as possible.
  • the lateral illumination leads to very undefined Lichtausbreitonne in the entire hob plate, which results over these long distances declining brightness to the center of the hob plate out as well as undefined brightness distributions over the entire surface.
  • uneven brightness zones are perceived, however should appear evenly. Therefore, it is impossible or precluded in the prior art that specific strips can be produced off the center of the hob plate individually and with relatively homogeneous light distribution.
  • An inventive cooktop comprises a cooktop panel and a lighting device, which has at least one light source.
  • the light source is arranged such that light from this light source can be coupled into the cooktop panel via a lateral edge of the cooktop panel.
  • An essential idea of the invention is to be seen in that the hob has a light coupling element for coupling the light in the hob plate.
  • This light coupling element is designed so that it has a coupling surface facing the light source, which is arranged at an angle not equal to 90 ° to an underside of the hob plate.
  • the light coupling element is formed by the hob plate itself and the coupling surface is formed by at least a portion of the extension of the edge.
  • the hob plate is provided as an integral part, which on this narrow lateral Edge is formed with said coupling surface and thus this coupling surface is quasi integrated in the region of the hob plate is formed.
  • the hob plate itself is to manufacture and design accordingly.
  • the light coupling element is a separate light guide, which is arranged adjacent to the edge of the hob plate.
  • this separate light guide is arranged non-destructively non-detachably directly adjacent to this edge.
  • it may be glued to it.
  • a mechanical connection between the light guide and the hob plate is formed such that no additional connecting element is disposed on the contact surfaces on which the light guide and the edge of the cooktop plate directly abut each other. As a result, the optical influence of the light with respect to the deflection is avoided.
  • the usual shape of the hob plate can be formed and provided so that the manufacturing process of the hob itself does not have to be changed over.
  • the coupling surface is at least partially planar.
  • a tapered towards the edge shape achieved or in an embodiment with a separate light guide, which is arranged adjacent to the edge of the hob plate, a side facing away from the edge side also tapered light guide formed is arranged adjacent to the edge of the hob plate, a side facing away from the edge side also tapered light guide formed ,
  • the light source is oriented so that the light emitted by it with primary rays at an angle other than 90 ° to the coupling surface impinges.
  • a light deflection is achieved, so that the above-mentioned precise local brightness zones, in particular the near-edge brightness zones, are very well defined in the cooktop panel and improved with regard to their uniform brightness appearance can be generated.
  • an angle between a straight contour in longitudinal section through the hob plate contour curve of the planar coupling surface and a bottom of the hob plate between 25 ° and 65 °, in particular between 30 ° and 60 °.
  • This specific angular geometry is particularly advantageous for producing brightness zones which already start at the edge of the hob plate and are very narrow in this context. These brightness zones then generated thus do not extend undesirably far into the cooktop panel, so that here too no unwanted loss of brightness and no, as occurs in the prior art, very inhomogeneous brightness distribution occurs in a brightness zone.
  • the coupling-in surface is curved at least in regions. This also makes it possible to generate very specific localized locations of brightness zones and, as a rule, very focused and precisely outlined brightness zones, which in turn also have a very uniform light distribution.
  • the coupling surface is formed in a longitudinal section of the hob plate with a convex contour profile.
  • this convex contour profile is formed with an equal radius over the entire length of the contour profile. It is then formed by such a design, so to speak, a kind of converging lens, through which the above advantages come into full effect here as well.
  • the convex contour profile has a radius between 2.5 mm and 6.5 mm, in particular between 3 mm and 6 mm. This also just the beginning of the edge of the cooktop panel and measured perpendicular to this edge very narrow brightness zones are possible, which then appear as a strip with very similar homogeneous light distribution.
  • the coupling-in surface is designed such that the coupled-in light is deflected or broken toward the underside of the hob plate.
  • the embodiment of the coupling surface with at least partially planar configuration and / or at least partially curved Design of an underside of the cooktop plate facing away from the cooktop panel itself or formed thereon a light guide.
  • the at least one light source is on the side facing away from the edge of the hob plate and covered from above by a cover.
  • unwanted light leaks can be avoided laterally and upwards and as large a proportion as possible of the emitted light can be conducted to the coupling surface.
  • the cover is designed to be reflective on the inner side facing the light source.
  • a specific mirror coating or another, light-reflecting coating may be provided.
  • the embodiment with an otherwise optical element, for example a prism or a lens or a further light guide, may be provided in the context.
  • the illuminating device illuminates a surface area of the cooking field plate adjacent to the edge, wherein the surface area in the surface of the cooking surface plate is formed in a direction perpendicular to the edge at most up to 20% of the extent of the extent of the hob plate in this vertical direction.
  • a very specific brightness zone which should be designed as a very narrow edge-side strip.
  • By such brightness zones can be displayed at the edge information about, for example, a cooking zone of the hob plate.
  • a marginal narrow optical strip or such a brightness zone for example, the selected or already running active operation of a cooking zone can be displayed.
  • the cooktop panel has a thickness of between 3.5 mm and 5 mm, in particular 4 mm.
  • this specific thickness of the cooktop panel allows with the above advantageous values for a radius of a curved coupling surface and / or an angular position of a flat coupling surface for Underside of the cooktop panel particularly close to the edges, stripe-shaped brightness zones with a particularly homogeneous light distribution.
  • an underside of the hob plate is coated with a light-impermeable, in particular reflective layer.
  • a light-impermeable, in particular reflective layer As a result of this embodiment, the coupled-in light is reflected back to the top at most so that the particularly bright embodiment of a brightness zone with a particularly uniform homogeneous light distribution can be generated.
  • another embodiment of the hob plate is possible to the effect that it is light-impermeable to the bottom.
  • a separate, light-impermeable component may be arranged on the underside of the hob plate.
  • a hob 1 is shown in a plan view.
  • the hob 1 comprises a hob plate 2, which is formed of glass ceramic or glass.
  • On an upper side 3 of the hob plate 2 are to understand in number, position and geometric configuration, only by way of example, cooking zones 4, 5, 6 and 7 formed or marked.
  • the hob plate 2 has, in addition to the user-facing top 3 an opposite bottom 8 ( Fig. 2 and Fig. 3 ) on.
  • a top edge 3 and the underside 8 connecting narrow edge 9 is formed circumferentially.
  • the hob plate 2 is also surrounded by a frame 10.
  • the frame 10 covers components disposed thereunder, such as light sources of a lighting device.
  • Fig. 2 is in a schematic longitudinal section and thus in a sectional plane, the in Fig. 1 is perpendicular to the plane of the figure, the hob plate 2 shown.
  • the edge 9 has in this embodiment, a coupling-in surface 11 for coupling light of the lighting device, which is flat.
  • this coupling-in surface 11 has a straight contours.
  • an angle ⁇ between the coupling surface 11 and the underside 8 is between 25 ° and 65 °, in particular between 30 ° and 60 °.
  • the coupling surface 11 is not formed over the entire height between the top 3 and the bottom 8, but partially formed over the entire extent of the edge 9.
  • this bevel is formed with respect to the coupling surface 11 over the entire connecting path between the top 3 and the bottom 8.
  • the coupling surface 11 of the bottom 8 is formed facing away.
  • this light coupling element which has the coupling surface 11, as shown in FIG Fig. 2 quasi integrated into the hob plate 2 and thus formed by itself.
  • a corresponding light coupling element is formed separately from the hob plate 2 and is arranged directly adjacent to the edge 9.
  • Fig. 3 is shown in a corresponding longitudinal section a further embodiment of a light coupling element with a coupling surface 11.
  • the coupling surface 11 is not flat, but curved.
  • a coupling-in surface 11 is formed, which has an arc-shaped contour profile, which is designed in particular convex.
  • a radius r is formed between 2.5 mm and 6.5 mm, in particular between 3 mm and 6 mm. The radius r is preferably over the entire distance of the coupling surface 11 and thus constant over the entire curved contour profile.
  • the coupling surface 11 extends with its curved configuration over the entire connecting path between the top 3 and the bottom 8 and not only partially extends from it.
  • Fig. 4 is an embodiment of the hob 1 along the section line AA shown in a schematic longitudinal sectional view.
  • the in Fig. 4 components shown not provided with cut surfaces, so that the beam path of the light of the light source 12 is easier to understand.
  • the coupling surface 11 is formed over the entire connecting path between the top 3 and the bottom 8, so that here at the edge 9 a tip or wedge-shaped configuration of the hob plate 2 is formed. It can be seen that an angle ⁇ between the edge 9 and thus also the coupling surface 11 and a bottom 8 is an acute angle, which is 30 ° here.
  • the hob 1 is also exemplary mounted on a countertop 13, this being understood merely by way of example and the direct support of the hob plate 2 on the countertop 13 is to be understood as an example.
  • other components such as a mounting frame or the like, may be provided here, which then serve as additional carrier components and which then the hob 1 is connected to the worktop 13.
  • a lighting device 14 preferably comprises a plurality of light sources 12, which may also be light-emitting diodes, for example. They are, as in Fig. 4 to recognize, arranged laterally to the hob plate 2 and also positioned in the vertical direction so that they are within a thickness d, which is preferably 4mm, are arranged and thus virtually arranged at the same altitude.
  • the light source 12 is covered by the frame 10, which is a cover. Both on the hob plate 2 opposite side, as well as up a light leakage is thus prevented.
  • an inner side 10 a of the frame 10 is formed reflecting light, in which case a corresponding coating can be provided and / or even with a metallic material, such as stainless steel, a appropriate light reflection is given. As a result, the light emitted by the light source 12 is directed circumferentially to the coupling surface 11.
  • the inside 10a is blackened or roughened or otherwise configured so that reflections are prevented as much as possible. This is advantageous if, for example due to the geometry of the inner side 10a and the position of the light source 12 and possibly the coupling surface 11 unfavorable reflections and by the secondary radiation then unfavorable Lichteinkopplung and distribution in the hob plate 2 would occur.
  • a main emission direction 12a of the light 12b with the primary rays arrive at an angle not equal to 90 ° to the coupling surface 11.
  • the coupled-in light 12c is deflected in a defined manner to the bottom and thus to the underside 8 of the cooktop panel 2.
  • a brightness zone 15 (directly adjacent to the edge 9) is achieved (FIG. Fig. 1 ) can be generated, which then considered in a direction perpendicular to the edge 9 and in the surface of the hob plate 2 and thus in Fig. 1 can be generated very narrow in the x direction.
  • FIG. Fig. 1 Like this in Fig.
  • Fig. 5 is a sectional view analogous to Fig. 4 shown, in which, in contrast to the representation in Fig. 4 only the angle ⁇ is different and here is 45 °.
  • This angular magnification also changes the deflection of the incident light at the coupling-in surface 11, as a result of which the extension of the brightness zone 15 in the x-direction also changes and, in particular, widens.
  • Fig. 6 a further embodiment is shown in which, unlike 4 and FIG. 5 the angle ⁇ is 60 °. As can be seen from the progress of the light beams, the width of the brightness zone 15 in the x-direction is thereby further widened.
  • this width of the brightness zones, and in the examples mentioned, the brightness zone 15, in the width direction of the hob plate 2 and thus in the x direction, in the surface of the hob plate 2 perpendicular to the edge 9, via which the light is also coupled is oriented, a maximum of 20% of the total extent or the entire extent of the hob plate 2 is in this vertical direction.
  • Fig. 7 is in a further sectional view according to the statements in Fig. 4 to Fig. 6 the hob 1 shown.
  • a light coupling element is not integrated in the hob plate 2, but is formed by a separate light guide.
  • the light coupling elements 16 as shown in the Fig. 4 to Fig. 6 are represented, formed by this separate light guide, a separate Lichteinkoppelelement 17, which rests directly on the edge 9 of the hob plate 2.
  • this Lichteinkoppelelement 17 On the side facing away from the edge 9 and thus the light source 12 side facing this Lichteinkoppelelement 17 then has a configuration which comprises a coupling surface 11, which in turn is arranged at an angle not equal to 90 ° to a bottom 8 of the hob plate 2.
  • this coupling surface 11 according to the comments in 4 to 6 formed and thus formed as a straight contour contour in the longitudinal sectional view, which then extends in particular over the entire connecting path between an upper side and a lower side of the Lichteinkoppelelements 17, said Lichteinkoppelelement 17 extends in the vertical direction and thus in the z-direction over the same height or has the same thickness as the hob plate 2 with its thickness d.
  • the coupling-in surface 11 can be designed differently and, for example, have a contours profile which is curved at least in regions in the longitudinal section, so that in particular a converging lens is formed.
  • Curved contours of the coupling surface 11 are in accordance with the following explanatory embodiments Fig. 8 to Fig. 10 shown. So is in the context in the illustration according to Fig. 8 a longitudinal sectional view shown with respect to the components and their arrangement according to the embodiments according to Fig. 4 to Fig. 7 are formed. Difference to the statements there is here that the coupling surface 11 is convexly curved and in Fig. 8 not over the entire connecting distance between the top 3 and the bottom 8 of the hob plate 2 extends. Again, the thickness d is again preferably 4 mm, and the radius r is in the embodiment in FIG Fig. 8 preferably 3mm. In Fig. 9 an embodiment is shown in which the coupling surface 11 is curved over the entire connecting path between the top 3 and the bottom 8 and in the context of a radius r of 4mm is formed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
EP15164353.3A 2014-05-06 2015-04-21 Table de cuisson avec une plaque de cuisson et rayonnement lumineux sur le bord Active EP2942569B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014208410.5A DE102014208410A1 (de) 2014-05-06 2014-05-06 Kochfeld mit einer Kochfeldplatte und einer randseitigen Lichteinstrahlung

Publications (2)

Publication Number Publication Date
EP2942569A1 true EP2942569A1 (fr) 2015-11-11
EP2942569B1 EP2942569B1 (fr) 2020-01-01

Family

ID=53008298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15164353.3A Active EP2942569B1 (fr) 2014-05-06 2015-04-21 Table de cuisson avec une plaque de cuisson et rayonnement lumineux sur le bord

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EP (1) EP2942569B1 (fr)
DE (1) DE102014208410A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3066393A1 (fr) * 2013-11-06 2016-09-14 BSH Hausgeräte GmbH Dispositif de table de cuisson

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005011012A1 (fr) * 2003-07-21 2005-02-03 Schott Ag Element luminescent
EP1376872B1 (fr) 2002-05-07 2007-10-10 Schott Ag Dispositif d'éclairage pour des écrans sensibles à toucher
EP2381177A1 (fr) 2010-04-24 2011-10-26 Electrolux Home Products Corporation N.V. Plaque de cuisson avec équipement d'éclairage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7554060B2 (en) * 2006-09-29 2009-06-30 England Raymond O Displaying cooking-related information
ES2377695B1 (es) * 2009-07-14 2013-02-15 Bsh Electrodomésticos España, S.A. Placa de cubierta de aparato doméstico con un grabado interior por láser.
FR2967236B1 (fr) * 2010-11-04 2014-10-10 Eurokera Article vitroceramique lumineux
DE102011088452A1 (de) * 2011-12-13 2013-06-13 BSH Bosch und Siemens Hausgeräte GmbH Gaskochfeld
EP2687493A2 (fr) * 2012-07-20 2014-01-22 BSH Bosch und Siemens Hausgeräte GmbH Procédé de fabrication d'un élément d'appareil ménager et élément d'appareil ménager

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1376872B1 (fr) 2002-05-07 2007-10-10 Schott Ag Dispositif d'éclairage pour des écrans sensibles à toucher
WO2005011012A1 (fr) * 2003-07-21 2005-02-03 Schott Ag Element luminescent
EP2381177A1 (fr) 2010-04-24 2011-10-26 Electrolux Home Products Corporation N.V. Plaque de cuisson avec équipement d'éclairage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3066393A1 (fr) * 2013-11-06 2016-09-14 BSH Hausgeräte GmbH Dispositif de table de cuisson
EP3066393B1 (fr) * 2013-11-06 2024-04-10 BSH Hausgeräte GmbH Dispositif pour une plaque de cuisson

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Publication number Publication date
EP2942569B1 (fr) 2020-01-01
DE102014208410A1 (de) 2015-11-12

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