HOB DEVICE

Description

[0001] The invention relates to a cooking hob device according to claim 1.

[0002] A hob is already known from the prior art which has a plate unit with a plate base body. On one plate side of the plate base body, in a first partial region of a surface section of the plate side, a first layer unit is arranged so as to be non-transparent in an assembled state. In a second partial region of the surface section, a second layer unit is arranged so as to be transparent in an assembled state. In an installed position, a light source is arranged below the second partial region, which provides light in an operating state. The second partial region allows the light provided by the light source to pass through unhindered in the operating state, whereby an operator above the plate unit can perceive the light.

[0003] The corresponding state of the art can be found in the documents DE 10 2018 120740 A1 and EP 1 867 613 A1.

[0004] The object of the invention is, in particular but not limited to, to provide a generic device with improved lighting properties. This object is achieved according to the invention by the features of claim 1, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0005] A hob device, in particular an induction hob device, is proposed, comprising at least one plate unit which has at least one plate base body which has an at least substantially smooth surface on at least one plate side in at least one surface section, and which has at least one first layer unit which is arranged in at least a first partial region of the surface section and which is at least substantially non-transparent, and which has at least one second layer unit which is arranged in at least one second partial region of the surface section, advantageously adjacent to the first partial region, and which is intended to scatter light.

[0006] Such a configuration, in particular, makes it possible to achieve optimized lighting. For example, optimized lighting properties and / or homogeneous lighting can be advantageously provided by the second layer unit and / or the at least substantially smooth surface. The optimized lighting properties could, for example, comprise targeted and / or homogeneous lighting and, for example, be provided for illuminating at least one symbol. Afterglow, which could, for example, result at least partially from a reflection on the side of the plate, and / or a view into the interior of a cooktop can be avoided.For example, the at least substantially smooth surface can achieve, in particular, low light scattering and / or light influence by the surface section, thereby providing, for example, optimized lighting properties and / or an optimized external appearance. For example, the second layer unit can prevent, in particular, a hotspot effect, which could be caused, for example, by special light sources such as LEDs, particularly while avoiding additional components.

[0007] A "cooking hob device", advantageously an "induction cooking hob device", is to be understood in particular as at least one part, in particular a subassembly, of a cooking hob, advantageously an induction cooking hob.

[0008] A "plate unit" is understood, in particular, to mean a unit that has at least one longitudinal extension and at least one transverse extension, and at least one thickness that is significantly smaller than the longitudinal extension and the transverse extension. For example, the longitudinal extension and / or the transverse extension could each be at least twice, in particular at least five times, advantageously at least eight times, particularly advantageously at least twelve times, preferably 20 times, and particularly preferably at least fifty times as large as the thickness. When viewed perpendicularly to a main extension plane of the plate unit, the plate unit could, for example, have an oval and / or circular and / or n-shaped shape. When viewed perpendicularly to a main extension plane of the plate unit, the plate unit advantageously has a rectangular and / or square shape.

[0009] A "longitudinal extension" of an object is understood to mean, in particular, an extension of the object along a longitudinal extension direction of the object. An "extension" of an object is understood to mean, in particular, a maximum distance between two points of a perpendicular projection of the object onto a plane. A "longitudinal extension direction" of an object is understood to mean, in particular, a direction that is parallel to the longest side of the smallest imaginary geometric cuboid that just completely encloses the object. A "transverse extension" of an object is understood to mean, in particular, an extension of the object along a transverse extension direction of the object.A "transverse extension direction" of an object is understood to mean, in particular, a direction that is parallel to the second-longest side of the smallest imaginary geometric cuboid that just completely encloses the object. A "thickness" of an object is understood to mean, in particular, an extension of the object along a thickness direction of the object. A "thickness direction" of an object is understood to mean, in particular, a direction that is parallel to the smallest side of the smallest imaginary geometric cuboid that just completely encloses the object.

[0010] For example, the thickness of an object could be identical to the thickness of the object's material. Advantageously, the thickness of an object is aligned perpendicularly to the longitudinal extent of the object and to the transverse extent of the object. Advantageously, the longitudinal extent of an object and the transverse extent of the object are aligned perpendicularly to each other.

[0011] A "main extension plane" of a structural unit is to be understood in particular as a plane which is parallel to a largest side surface of a smallest imaginary cuboid which just completely encloses the structural unit and advantageously runs through the center of the cuboid.

[0012] A "plate base body" of the plate unit is to be understood in particular as a unit that defines and / or characterizes an external shape of the plate unit at least to a large extent and / or that comprises at least a large portion of the mass of the plate unit and / or a volume of the plate unit. "At least to a large extent" is to be understood in particular as a proportion, in particular a mass proportion and / or a volume proportion and / or a number proportion, of at least 70%, in particular of at least 80%, advantageously of at least 90%, and preferably of at least 95%.

[0013] The plate side of the plate base body is advantageously aligned at least substantially parallel to a main extension plane of the plate base body. In an installed position, the plate side could, for example, form a side of the plate base body facing an operator and / or a visible side of the plate base body. Advantageously, in an installed position, the plate side could form a side of the plate base body facing away from an operator and / or a rear side of the plate base body. "At least substantially parallel" is understood in particular to mean an alignment of a direction relative to a reference direction, advantageously in a plane, wherein the direction has a deviation from the reference direction of, for example, a maximum of 8°, advantageously a maximum of 5°, and particularly advantageously a maximum of 2°.

[0014] For example, the surface section could extend over a proportion of a maximum of 60%, in particular a maximum of 50%, advantageously a maximum of 40%, particularly advantageously a maximum of 30%, preferably a maximum of 20% and particularly preferably a maximum of 10% of a surface extension of the plate base body on the plate side. Particularly advantageously, the surface section extends over at least a large part of a surface extension of the plate base body on the plate side. The surface section extends, for example, over a proportion of at least 65%, in particular of at least 75%, advantageously of at least 80%, particularly advantageously of at least 85%, preferably of at least 90% and particularly preferably of at least 95% of a surface extension of the plate base body on the plate side.

[0015] An "at least substantially smooth" surface is understood to mean, in particular, a surface having a roughness of a maximum of 300 nm, in particular a maximum of 200 nm, advantageously a maximum of 150 nm, particularly advantageously a maximum of 120 nm, preferably a maximum of 100 nm, and particularly preferably a maximum of 80 nm. For example, a roughness distance, which defines a distance between two points on the surface of the plate base body that are at most a distance from one another and which is aligned at least substantially parallel to a thickness of the plate base body, could correspond to a roughness value. Advantageously, a roughness of the plate base body can be understood to mean an unevenness of a surface height of the plate base body. The unevenness of the surface height of the plate base body could, for example, correspond to a roughness value.

[0016] The cooktop device has at least one light source designed to provide light. In an installed position, the light source is advantageously arranged on a side of the plate unit facing away from the operator. In an assembled state, the light source is advantageously arranged on a side of the plate unit facing the plate side. "Light," in particular visible light, is understood to mean electromagnetic radiation with a wavelength of at least 380 nm and a maximum of 750 nm. The light is advantageously designed as visible light. For example, in addition to visible light, the light source could be designed to provide ultraviolet radiation and / or infrared radiation.

[0017] A "layer unit" is understood, in particular, to be a unit comprising at least one layer. The layer unit and / or the layer advantageously has a material thickness that is significantly smaller than a thickness and / or than a material thickness of at least one base unit, such as the plate base body, on which the layer unit and / or the layer is arranged in an assembled state. The base unit is advantageously a unit on which the layer unit is arranged in an assembled state. The base unit is particularly advantageously formed by the plate base body.For example, a thickness of the base unit and / or the plate base body could be at least 2 times, in particular at least 5 times, advantageously at least 8 times, particularly advantageously at least 12 times, preferably 20 times and particularly preferably at least 50 times as large as a material thickness of the layer unit and / or the layer which, in an assembled state, is arranged, for example, on the base unit and / or on the plate base body.

[0018] For example, the layer unit and / or the layer could be attached indirectly to the plate base body, at least in sections. Advantageously, the layer unit and / or the layer could be attached directly to the plate base body, at least in sections. The layer unit and / or the layer could advantageously be self-adhesive.

[0019] For example, the layer unit could have at least one, and for example, exactly one, layer. The layer unit could, for example, have at least two, advantageously at least three, particularly advantageously at least four, preferably at least five, and particularly preferably several layers. Advantageously, a value of a material thickness of the layer unit could at least substantially correspond to a value of a sum of the material thicknesses of individual layers of the layer unit, advantageously all layers of the layer unit. In this context, "at least substantially" can advantageously be understood to mean that a deviation from a predetermined value amounts in particular to a maximum of 25%, preferably a maximum of 10%, and particularly preferably a maximum of 5% of the predetermined value.

[0020] The phrase that an object is "at least substantially non-transparent" should be understood in particular to mean that the object is transparent for at least a large part of a

[0021] Wavelength range of electromagnetic radiation and / or of visible light is opaque and could, for example, be partially transparent for at least one wavelength. For example, at least one layer of the layer unit could be at least substantially opaque. Preferably, the first layer unit is opaque. For example, in the case of at least one layer of the first layer unit, which could be at least substantially opaque, the first layer unit could have at least two, in particular at least three, advantageously at least four, preferably at least five and particularly preferably several layers, in order to thereby prevent in particular partial transparency and / or ensure opacity.

[0022] The first layer unit is intended to at least substantially and advantageously prevent light from escaping from the interior of a hob, at least up to a radiation density of at least 480 W / m2. In particular, the first layer unit is intended to at least substantially and advantageously prevent a view into the interior of a hob.

[0023] The second layer unit scatters the light emitted by the light source Lightwith respect to at least one, in particular arbitrary point on a surface of the second layer unit facing the plate base body in an assembled state, over a solid angle of at least π, in particular of at least 3π / 2 and advantageously of at least 2π. Advantageously, the second layer unit scatters light, in particular light emitted by the light source, with respect to at least one, in particular arbitrary point on a surface of the second layer unit facing the plate base body in an assembled state, into at least substantially an entire hemisphere facing the plate base body. This makes it possible to provide, in particular, particularly diffuse, well-distributed light, whereby, in particular, particularly advantageous illumination can be achieved.

[0024] "Intended" should be understood in particular to mean specifically programmed, designed, and / or equipped. The fact that an object is intended for a specific function should be understood in particular to mean that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0025] It is further proposed that the first partial region extends over at least a large part of the plate base body when viewed perpendicularly to a main extension plane of the plate unit. The first partial region could, for example, extend over a proportion of at least 60%, in particular of at least 70%, advantageously of at least 80%, particularly advantageously of at least 85%, preferably of at least 90% and particularly preferably of at least 95% of an areal extension of the surface section and advantageously of the plate side when viewed perpendicularly to a main extension plane of the plate unit. This makes it possible, in particular, to prevent a view into the interior of a hob, advantageously using simple construction means. In particular, simple assembly and / or production can be enabled, which can, for example, result in low costs.

[0026] The first layer unit could, for example, have a thickness that could at least substantially correspond to a thickness of the second layer unit. Alternatively, for example, the first layer unit could, for example, have a thickness that could be smaller than a thickness of the second layer unit. Preferably, the first layer unit has a thickness that is greater than a thickness of the second layer unit. For example, the thickness of the first layer unit could be at least 1.1 times, in particular at least 1.3 times, advantageously at least 1.6 times, particularly advantageously at least 2 times, preferably at least 2.4 times, and particularly preferably at least 2.7 times as great as the thickness of the second layer unit.The thickness of the first layer unit could, for example, have a value of a maximum of 100 µm, in particular a maximum of 80 µm, advantageously a maximum of 60 µm, particularly advantageously a maximum of 50 µm, preferably a maximum of 40 µm, and particularly preferably a maximum of 30 µm. The thickness of the second layer unit could, for example, have a value of a maximum of 50 µm, in particular a maximum of 40 µm, advantageously a maximum of 30 µm, particularly advantageously a maximum of 20 µm, preferably a maximum of 15 µm, and particularly preferably a maximum of 12 µm. This makes it possible, in particular, to achieve an optimized design and / or high flexibility, for example when selecting a thickness for the first layer unit.

[0027] It is further proposed that the plate base body has an at least substantially smooth surface in at least one further surface section on at least one further plate side, which is advantageously arranged opposite the plate side with respect to a thickness of the plate base body. The further plate side of the plate base body is advantageously aligned at least substantially parallel to a main extension plane of the plate base body. In an installed position, the further plate side could, for example, form a side of the plate base body facing away from an operator and / or a rear side of the plate base body. Advantageously, in an installed position, the further plate side could form a side of the plate base body facing an operator and / or a visible side of the plate base body.The light source is advantageously arranged in an installed position on a side of the plate base body facing away from the further plate side. For example, the further surface section could extend over a proportion of a maximum of 60%, in particular a maximum of 50%, advantageously a maximum of 40%, particularly advantageously a maximum of 30%, preferably a maximum of 20%, and particularly preferably a maximum of 10% of the surface area of ​​the plate base body on the further plate side. Particularly advantageously, the further surface section extends over at least a large part of the surface area of ​​the plate base body on the further plate side.The additional surface section extends, for example, over a portion of at least 65%, in particular at least 75%, advantageously at least 80%, particularly advantageously at least 85%, preferably at least 90%, and particularly preferably at least 95% of the surface area of ​​the panel base body on the additional panel side. This allows, in particular, minimal light scattering and / or light influence to be achieved by the additional surface section, which, for example, can provide optimized lighting properties and / or an optimized external appearance.

[0028] For example, the first partial region and the second partial region could be arranged so as to overlap at least in sections, in particular when viewed perpendicularly to a main extension plane of the plate unit. Particularly advantageously, the first partial region and the second partial region are arranged so as to overlap at least in sections, advantageously at least to a large extent and particularly advantageously completely, in particular when viewed perpendicularly to a main extension plane of the plate unit. When viewed perpendicularly to a main extension plane of the plate unit, the first partial region and the second partial region advantageously form different sections of the surface section from one another. Preferably, the first partial region and the second partial region adjoin one another at least in sections, in particular when viewed perpendicularly to a main extension plane of the plate unit.For example, the second subregion could surround and / or enclose the first subregion at least in sections, particularly when viewed from a main extension plane of the plate unit. The first subregion advantageously surrounds and / or encloses the second subregion at least in sections, particularly when viewed from a main extension plane of the plate unit. The phrase "at least one subregion and at least one further subregion adjoin one another at least in sections" is intended to mean, in particular, that at least one section of the subregion and at least one section of the further subregion adjoin one another, and, for example, the subregion could have at least one second section that could be free of any adjoining connection to the second subregion.This makes it possible to achieve a particularly advantageous and / or compact design, in which gaps between the partial regions can be advantageously avoided. According to the invention, the plate unit has at least one third layer unit.

[0029] The third layer unit has at least one filter function, by means of which the third layer unit at least partially filters the light emitted by the light source. The third layer unit at least partially filters the light emitted by the light source by scattering, absorbing, and / or transmitting the light.

[0030] This makes it possible, in particular, to optimally and / or specifically adjustable lighting and / or visibility, which advantageously allows for a high degree of design freedom during production.

[0031] It is further proposed that the third layer unit be arranged in at least one third subregion of the surface section, advantageously adjacent to the first subregion. In particular, the third subregion differs from the first subregion and / or the second subregion. This allows for, in particular, a high degree of flexibility and / or design freedom.

[0032] For example, the first sub-region and the third sub-region could be arranged so as to overlap at least in sections, particularly when viewed perpendicularly to a main extension plane of the plate unit. Particularly advantageously, the first sub-region and the third sub-region are arranged so as to overlap at least in sections, advantageously at least to a large extent and particularly advantageously completely, particularly when viewed perpendicularly to a main extension plane of the plate unit. When viewed perpendicularly to a main extension plane of the plate unit, the first sub-region and the third sub-region advantageously form different sections of the surface section from one another. Preferably, the first sub-region and the third sub-region adjoin one another at least in sections, particularly when viewed perpendicularly to a main extension plane of the plate unit.For example, the third subregion could surround and / or enclose the first subregion at least in sections, particularly when viewed from a main extension plane of the plate unit. The first subregion advantageously surrounds and / or encloses the third subregion at least in sections, particularly when viewed from a main extension plane of the plate unit. This allows, in particular, a particularly advantageous and / or compact design to be achieved.

[0033] According to the invention, the third layer unit is provided to prevent, at least to a large extent, light from escaping from the interior of a hob in an inactivity mode of the light source by means of the filter function.

[0034] A "cooktop interior" is understood to mean, in particular, an area that is defined and / or delimited by at least one cooktop outer casing, which is designed, in particular, as a hollow space, and which is provided, in particular, for supporting at least one cooktop component. In particular, the cooktop device comprises at least one housing unit, which, in an assembled state, at least partially delimits and / or defines the cooktop interior, and which, in particular, in an assembled state, forms and / or defines at least a portion of the cooktop outer casing. In an assembled state, the housing unit delimits and / or defines the cooktop interior, in particular together with the plate unit. In an assembled state, the plate unit delimits and / or defines at least a portion of the cooktop outer casing.This can prevent light from escaping from the interior of the hob, which can advantageously provide an attractive external appearance.

[0035] According to the invention, the third layer unit is provided to enable and advantageously enable a large amount of light to escape from the interior of a cooktop in an operating mode of the light source by means of the filter function. This can, in particular, guarantee optimal visibility of the lighting, which, for example, can provide important instructions and / or information for operation and / or, in particular, can provide a particularly high safety standard and / or particularly high operating comfort.

[0036] The first layer unit could, for example, have a thickness that could be greater than a thickness of the third layer unit. For example, alternatively, the first layer unit could, for example, have a thickness that could be smaller than a thickness of the third layer unit. Preferably, the first layer unit has a thickness that at least substantially corresponds to a thickness of the first layer unit. For example, a quotient of a smaller one of the thicknesses, for example the thickness of the first layer unit or the thickness of the third layer unit, and a larger one of the thicknesses, for example the thickness of the third layer unit or the thickness of the first layer unit, could assume and / or have a value of at least 0.9, in particular of at least 0.92, advantageously of at least 0.94, particularly advantageously of at least 0.96, preferably of at least 0.98, and particularly preferably of at least 0.99.The thickness of the third layer unit could, for example, have a value of a maximum of 100 µm, in particular a maximum of 80 µm, advantageously a maximum of 60 µm, particularly advantageously a maximum of 50 µm, preferably a maximum of 40 µm, and particularly preferably a maximum of 30 µm. This allows for a particularly advantageous construction.

[0037] According to the invention, it is provided that the third layer unit, when marking at least one operating area, at least with the

[0038] Light source. When viewed perpendicular to the main extension plane of the plate unit, the third layer unit is arranged entirely within a surface extension spanned in an operating area.

[0039] For example, the light source could be at least partially integrated into the user interface. The user interface could, for example, include at least one luminous element of the light source. This can, in particular, provide an advantageously illuminated operating area, which can, in particular, achieve a high level of user comfort.

[0040] When viewed perpendicularly to a main extension plane of the plate unit, the second layer unit is arranged entirely within a surface extension spanned in a heating area and participates in at least one marking of at least the heating area.

[0041] It is further proposed that the first layer unit and / or the second layer unit comprise at least one coating. Alternatively or additionally, the first layer unit and / or the second layer unit could comprise, for example, at least one lacquer and / or at least one film. This allows, in particular, the use of a proven technology, which advantageously optimizes production.

[0042] For example, the third layer unit could have at least one coating and / or at least one varnish and / or at least one film. Preferably, the third layer unit has at least one self-adhesive film. In particular, the third layer unit has at least one layer which has at least one self-adhesive film and is advantageously designed as a self-adhesive film. The third layer unit and / or at least one layer of the third layer unit could, for example, have at least one, in particular self-adhesive, sticker and be advantageously designed as a, in particular self-adhesive, sticker. For example, the third layer unit and / or at least one layer of the third layer unit could be formed at least largely from at least one plastic, advantageously from at least one thermoplastic plastic and preferably from at least one thermoplastic polymer.This enables, in particular, quick and / or uncomplicated production and / or assembly.

[0043] Furthermore, it is proposed that the first layer unit and / or the second layer unit and / or the third layer unit have an at least substantially smooth surface, whereby in particular optimal lighting properties can be provided.

[0044] Particularly advantageous lighting can be achieved in particular by a hob, in particular by an induction hob, with at least one hob device according to the invention, in particular with at least one induction hob device according to the invention.

[0045] The hob device is not intended to be limited to the application and embodiment described above. In particular, the hob device may have a number of individual elements, components, and units that differs from the number stated herein to fulfill a functionality described herein.

[0046] Further advantages will become apparent from the following description of the drawings. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination.

[0047] They show: Fig. 1 a hob with a hob device in a schematic plan view, Fig. 2 a section along the line II-II of Figure 1 in a schematic representation and Fig. 3 a section along the line III-III of Figure 1 in a schematic representation.

[0048] Figure 1shows, by way of example, a hob 48a, which is particularly at least partially and advantageously entirely designed as an induction hob. Alternatively or additionally, the hob 48a could, for example, be at least partially designed as a resistance hob and / or as a gas hob.

[0049] The hob 48a has, in particular, at least one, and for example, exactly one, hob device 10a. The hob device 10a could, for example, be designed as a resistance hob device and / or as a gas hob device. In particular, the hob device 10a is designed as an induction hob device.

[0050] The hob device 10a has, in particular, at least one, and for example, exactly one, plate unit 12a. In the present exemplary embodiment, the plate unit 12a is designed, in particular, as a hob plate. In at least one assembled state, the plate unit 12a forms, in particular, a visible surface, which, in the assembled state, is arranged, in particular, facing an operator.

[0051] The plate unit 12a is intended, in particular, for the placement of cooking utensils (not shown), in particular for the purpose of heating the cooking utensils. In particular, the plate unit 12a, in an assembled state, forms at least part of a hob outer housing.

[0052] The hob device 10a, in particular, has at least one heating unit 56a. In the figures, only one of the multiple objects is provided with a reference symbol. For example, the hob device 10a could have at least two, advantageously at least four, particularly advantageously at least eight, preferably at least twelve, and particularly preferably a plurality of heating units 56a. The heating units 56a could, for example, be arranged in the form of a matrix.

[0053] The heating units 56a define, in particular, at least one, and for example, exactly one, heating region 46a. When viewed perpendicular to a main extension plane of the plate unit 12a, the heating units 56a in particular span at least one area and advantageously the heating region 46a, which in particular corresponds to the area spanned by the heating units 56a. In the following, only one of the heating units 56a will be described in particular.

[0054] The heating unit 56a is arranged in an installed position, in particular below the plate unit 12a. The heating unit 56a is intended, in particular, to heat at least one cooking utensil placed on the plate unit 12a above the heating unit 56a. The heating unit 56a is designed, in particular, as an induction heating unit.

[0055] The cooktop device 10a has, in particular, at least one, and for example, exactly one, user interface 50a. The user interface 50a is provided, in particular, for inputting and / or selecting operating parameters, such as a heating power and / or a heating power density and / or a heating zone. The user interface 50a is provided, in particular, for outputting a value of an operating parameter to an operator.

[0056] The operator interface 50a defines, in particular, at least one, and for example, exactly one, operating area 44a. When viewed perpendicular to a main extension plane of the plate unit 12a, the operator interface 50a particularly defines at least one surface and advantageously the operating area 44a, which corresponds in particular to the surface spanned by the operator interface 50a.

[0057] The hob device 10a has, in particular, at least one, and for example, exactly one, control unit 52a. In at least one operating state, the control unit 52a controls and / or regulates, in particular, a main appliance function and / or the heating unit 56a. The control unit 52a is particularly designed to execute actions and / or change settings depending on operating parameters entered via the user interface 50a. In this operating state, the control unit 52a regulates, in particular, a power supply to the heating unit 56a, specifically for heating the cooking utensil.

[0058] The hob device 10a has in particular at least one light source 54a (cf. Figures 2 and 3). In the present exemplary embodiment, the hob device 10a has in particular at least two, advantageously at least four, particularly advantageously at least eight, preferably at least twelve and particularly preferably a plurality of light sources 54a.

[0059] At least some of the light sources 54a are, in particular, integrated into the operator interface 50a and / or are part of the operator interface 50a. The operator interface 50a, in particular, comprises at least some of the light sources 54a. The portion of the light sources 54a that are part of the operator interface 50a is advantageously provided for illuminating the operating area 44a and / or for contributing to the identification of the operating area 44a.

[0060] In particular, at least some of the light sources 54a, which advantageously differ from the light sources 54a integrated in the user interface 50a, are provided to participate in marking the heating area 46a. Advantageously, the part of the light sources 54a, which advantageously differ from the light sources 54a integrated in the user interface 50a, is provided to illuminate the heating unit 56a. In particular, only one of the light sources 54a will be described below.

[0061] The light source 54a is provided, in particular, to provide light, in particular at least visible light. In an operating state, the light source 54a provides, in particular, light, and advantageously at least visible light. In an installed position, the light source 54a is arranged, in particular, below the plate unit 12a. Advantageously, the light source 54a is arranged, in an installed position, on a side of the plate unit 12a facing away from an operator.

[0062] The plate unit 12a has, in particular, at least one, and for example, exactly one, plate base body 14a. The plate base body 14a has, in particular, an at least substantially smooth surface on at least one plate side 16a in at least one surface section 18a. The surface section 18a extends, in particular, over at least a large part of the plate side 16a. In an installed position, the plate side 16a is designed, in particular, as an underside of the plate base body 14a. In particular, the plate side 16a is designed, in an installed position, as a side of the plate base body 14a facing away from an operator.

[0063] The plate base body 14a has, in particular, on at least one further plate side 32a in at least one further surface section 34a, an at least substantially smooth surface. The further surface section 34a extends, in particular, over at least a large part of the further plate side 32a. Advantageously, the further plate side 32a is arranged opposite the plate side 16a. The plate side 16a and the further plate side 32a are, in particular, aligned at least substantially parallel to a main extension plane of the plate base body 14a. In an installed position, the further plate side 32a is designed, in particular, as a visible side of the plate base body 14a. In particular, the further plate side 32a is designed, in an installed position, as a side of the plate base body 14a facing an operator.

[0064] The plate unit 12a has, in particular, at least one, and for example, exactly one, first layer unit 20a. The first layer unit 20a is arranged, in particular, in at least one first partial region 22a of the surface section 18a. In particular, the first layer unit 20a extends over at least a large part of the first partial region 22a. The first partial region 22a extends, in particular, over at least a large part of the surface section 18a. Particularly advantageously, the first layer unit 20a is at least substantially non-transparent and advantageously non-transparent, in particular at least with respect to visible light.

[0065] The plate unit 12a has, in particular, at least one and, for example, exactly one second layer unit 24a, in particular for each light source 54a assigned to the heating region 46a. Only one of the second layer units 24a is described below.

[0066] The second layer unit 24a is arranged in particular in at least one second partial region 26a of the surface section 18a. In particular, the second layer unit 24a extends over at least a large part of the second partial region 26a. The second partial region 26a extends in particular over a maximum of 20%, advantageously over a maximum of 15%, particularly advantageously over a maximum of 10%, preferably over a maximum of 5%, and particularly preferably over a maximum of 2% of the surface section 18a. Particularly advantageously, the second layer unit 20a is provided to scatter light, in particular at least visible light. In particular, the second layer unit 24a scatters light in an operating state, in particular light provided by the light source 54a.

[0067] The first partial region 22a advantageously extends over at least a large part of the plate base body 14a when viewed perpendicularly to a main extension plane of the plate unit 12a. In the present exemplary embodiment, the first partial region 22a, when viewed perpendicularly to a main extension plane of the plate unit 12a, extends, for example, over at least substantially 95% of a surface area spanned by the plate base body 14a.

[0068] Advantageously, the first partial region 22a and the second partial region 26a adjoin one another at least in sections, in particular when viewed perpendicularly to a main extension plane of the plate unit 12a. In the present exemplary embodiment, the first partial region 22a surrounds and / or delimits and / or defines, in particular, the second partial region 26a, in particular when viewed perpendicularly to a main extension plane of the plate unit 12a.

[0069] The second layer unit 24a, in particular in an operating state, at least participates in at least one marking of the heating area 46a. In the operating state, at least the second layer unit 24a and the light source 54a, in particular, participate in the marking of the heating area 46a. For example, in addition, at least the plate unit 12a could, for example, participate in the marking of the heating area 46a in the operating state.

[0070] For example, the second layer unit 24a has a thickness 30a, which in the present embodiment could, for example, assume a value of at least substantially 11 µm. The first layer unit 20a has, for example, a thickness 28a, which in the present embodiment could, for example, assume a value of at least substantially 30 µm. Advantageously, the thickness 28a of the first layer unit 20a is greater than the thickness 30a of the second layer unit 24a.

[0071] The plate unit 12a has, in particular, at least one and, for example, exactly one third layer unit 36a. The third layer unit 36a is arranged, in particular, in at least one third partial region 38a of the surface section 18a. In particular, the third layer unit 36a extends over at least a large part of the third partial region 38a. The third partial region 38a extends, in particular, over a maximum of 25%, in particular over a maximum of 20%, advantageously over a maximum of 15%, particularly advantageously over a maximum of 10%, preferably over a maximum of 7%, and particularly preferably over a maximum of 4% of the surface section 18a.

[0072] Advantageously, the first partial region 22a and the third partial region 38a adjoin one another at least in sections, in particular when viewed perpendicularly to a main extension plane of the plate unit 12a. In the present exemplary embodiment, the first partial region 22a surrounds and / or delimits and / or defines, in particular, the third partial region 38a, in particular when viewed perpendicularly to a main extension plane of the plate unit 12a.

[0073] Particularly advantageously, the third layer unit 36a is provided to at least partially filter light, in particular at least visible light. In particular, the third layer unit 36a at least partially filters light in an operating state, in particular light provided by the light source 54a.

[0074] In particular, when at least partially filtering the light, the third layer unit 36a, in an operating state and / or in an inactivity mode, at least partially prevents light from escaping from the interior 40a of the cooktop. The third layer unit 36a is particularly intended to at least partially prevent light from escaping from the interior 40a of the cooktop.

[0075] In particular, when the light is at least partially filtered, the third layer unit 36a, in an operating state and / or in an operating mode, enables light to at least partially escape from the hob interior 40a. The third layer unit 36a is particularly intended to at least partially enable light to escape from the hob interior 40a.

[0076] The second layer unit 36a has, for example, a thickness 42a, which in the present exemplary embodiment could, for example, assume a value of at least substantially 30 µm. Advantageously, the thickness 42a of the third layer unit 36a corresponds at least substantially to the thickness 28a of the first layer unit 20a.

[0077] The third layer unit 36a, in particular in an operating state, at least participates in at least one marking of the operating area 44a. In the operating state, at least the third layer unit 36a and the light source 54a, in particular, participate in the marking of the operating area 44a. For example, in addition, at least the plate unit 12a and / or the operator interface 50a could, for example, participate in the marking of the operating area 44a in the operating state.

[0078] In the present exemplary embodiment, the third layer unit 36a comprises, in particular, at least one self-adhesive film. The third layer unit 36a is designed, in particular, as a self-adhesive film and advantageously as a self-adhesive sticker.

[0079] In the present exemplary embodiment, the first layer unit 20a has, in particular, at least one coating. Advantageously, the first layer unit 20a could be formed as a multilayer structure and, in particular, have at least two, advantageously at least three, particularly advantageously at least four, and preferably more coatings, in order to ensure complete opacity and / or to exclude defects such as pinholes.

[0080] In the present exemplary embodiment, the second layer unit 24a has, in particular, at least one coating. In particular, the second layer unit 24a is designed as a coating.

[0081] For example, the first layer unit 20a and / or the second layer unit 24a could be applied to the plate base body 14a by means of at least one screen printing process and / or by means of at least one printing process.

[0082] The described design could, for example, achieve a high degree of design freedom with regard to lighting, which could, for example, allow desired design requirements and / or a functional lighting design to be achieved. Reference symbol

[0083] 10 Hob device 12 Plate unit 14 Plate base body 16 Plate side 18 Surface section 20 First layer unit 22 First section 24 Second layer unit 26 Second section 28 Thickness 30 Thickness 32 Further plate side 34 Further surface section 36 Third layer unit 38 Third section 40 Hob interior 42 Thickness 44 Operating area 46 Heating area 48 Hob 50 Operator interface 52 Control unit 54 Light source 56 Heating unit

Claims

1. Hob device, in particular induction hob device, comprising at least one plate unit (12a), which plate unit has at least one plate main body (14a), which has an at least substantially smooth surface in at least one surface portion (18a) on at least one plate side (16a), and which has at least one first layer unit (20a) which is arranged in at least one first sub-region (22a) of the surface portion (18a) and is at least substantially non-transparent, and with at least one light source (54a) which is intended for providing light in an operating mode, wherein the plate unit (12) has at least one second layer unit (24a) which is arranged in at least one second sub-region (26a) of the surface portion (18a) and is provided for scattering light, wherein the second layer unit (24a), when viewed perpendicular to a main extension plane of the plate unit (12a), is arranged completely within a surface extension which a heating region (46a) spans and at least participates in at least one identification of at least the heating region (46a), characterised in that the plate unit (12a) has at least one third layer unit (36a) which is provided to filter at least partially light provided by the light source (54a) in the operating mode, in order to permit optimal lighting in particular, and which is arranged in at least one third sub-region (38a) of the surface portion (18a), wherein the third layer unit (36a) has a filter function, by means of which the third layer unit (36a) filters light emitted by the light source (54a) by way of scattering and / or absorbing and / or transmitting the light, wherein the third layer unit (36a), when viewed perpendicular to a main extension plane of the plate unit (12a), is arranged completely within a surface extension which an operating region (44a) spans and at least participates in at least one identification of at least the operating region (44a), at least together with the light source (54a), wherein the third layer unit (36a) is provided, in the operating mode of the light source (54a), to permit at least partially an escape of light from the light source (54a) from a hob interior (40a) and, in an inactivity mode of the light source (54a), to prevent an escape of light from the hob interior (40a) by means of the filter function at least to a large extent.

2. Hob device according to claim 1, characterised in that the first sub-region (22a), when viewed perpendicular to a main extension plane of the plate unit (12a), extends over at least a large part of the plate main body (14a).

3. Hob device according to claim 1 or 2, characterised in that the first layer unit (20a) has a thickness (28a) which is larger than a thickness (30a) of the second layer unit (24a).

4. Hob device according to one of the preceding claims, characterised in that the first sub-region (22a) and the second sub-region (26a) adjoin one another at least in some portions.

5. Hob device according to one of the preceding claims, characterised in that the first sub-region (22a) and the third sub-region (38a) adjoin one another at least in some portions.

6. Hob device according to one of the preceding claims, characterised in that the third layer unit (36a) has a thickness (42a) which at least substantially corresponds to a thickness (28a) of the first layer unit (20a).

7. Hob device according to one of the preceding claims, characterised in that the first layer unit (20a) and / or the second layer unit (24a) has at least one coating.

8. Hob device according to one of the preceding claims, characterised in that the third layer unit (36a) has at least one self-adhesive film.

9. Hob, in particular induction hob, having at least one hob device (10a) according to one of the preceding claims.