EP3704413A1

EP3704413A1 - Cooking appliance comprising a lighting device for creating a focal point external to the housing

Info

Publication number: EP3704413A1
Application number: EP18795358.3A
Authority: EP
Inventors: Maxim Balzer; Peter Jell
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2017-11-02
Filing date: 2018-10-22
Publication date: 2020-09-09
Also published as: DE102017219497A1; WO2019086281A1

Abstract

The invention relates to a cooking appliance (1) comprising: a housing (2), in which a cooking compartment (3) is formed; and a door (5), which is movably arranged on the housing (2) and is designed to close the cooking compartment (3); a lighting device (13) having at least one light source (14, 15), at least sub-components of the lighting device (13) being arranged on the housing (2). The lighting device (13) has an optical system (18) designed to produce a defined effect of the light rays (16, 17) of the light source (14) such that said light rays (16, 17) converge in a focal point (19) outside the housing (2).

Description

Cooking appliance with a lighting device for generating a housing-external focal point

The invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door, which is movably arranged on the housing and is designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has at least one light source. The lighting device is arranged at least with partial components on the housing. In cooking appliances such as an oven or a steam cooker or a microwave cooking appliance, it is known that lighting devices are present. With these, for example, the cooking chamber can be illuminated inside. Such is known for example from WO 201 1/1 17037 A1. There, light sources are arranged externally to the door, wherein by means of additional optical elements, such as

Reflectors, the light can then be passed into the oven. In addition, it is also possible there that a space located in front of the cooking chamber can be illuminated by the light sources of the lighting device, for example, to be able to illuminate an extended food support from above. In addition, it is also possible there to initiate the light of the door-external light source in a cooking chamber closing door.

In addition, DE 10 2009 000 655 B1 discloses a domestic appliance for preparing food. There it is provided that a lighting device has a light source, which is arranged in the front region of a housing and is arranged externally to a door. Externally to the door beyond a light guide is arranged. In one embodiment, it is provided that a further light guide is arranged on the door, which couples in the closed state of the door with the door-external light light, so that the light from the light source via the two light guides can be introduced into the door. The door-side optical fiber is movably disposed relative to the door. In the known embodiments, a variety of lighting in the oven, take place in front of the oven and in the door, yet the functionality is limited in terms of individual optical illumination specific areas.

It is an object of the present invention to provide a cooking appliance in which the lighting of specific portions is improved with the lighting device.

This object is achieved by a cooking appliance having the features of claim 1. One aspect of the invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door. The door is movably arranged on the housing. It is also designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has at least one light source. The lighting device is arranged at least with subcomponents on the housing and arranged outside the door at least with subcomponents. The lighting device has an optical device, which is designed for the defined influencing of the light beams of the light source such that the light beams are bundled outside the housing in a focal point. By such a configuration, it is then possible to bundle the light beams emerging from the housing in such a way that they are prepared for further use, for example for coupling into a housing-external coupling region. As a result, it is then possible, for example, to make this coupling region relatively small and compact and still to couple in a high proportion of the light rays emerging from the housing and guided in a defined manner into the coupling region. On the other hand, it is then possible by this embodiment, in an unscheduled

Incorporate in a housing-external coupling area to distribute the light beams further, so that they can illuminate a housing-external area directly better. Since, in accordance with the laws of optics, the light rays expand after the focal point and form a specific light cone, the focussing of the light rays to a widened cone of light can be defined by the defined selection of the external focal point and thus again at the desired distance large-area lighting done. The optical device has at least one optically acting focusing element, such as a converging lens or a parabolic mirror or the like, which is arranged in the housing. The effect of this housing-side optical focusing element is then such that light beams emitted by the light source are bundled with this focusing element in such a way that a defined focus is produced in a defined manner outside the housing and thus at the exit of the light beams from the housing.

It is advantageously provided that this at least one focus or this at least one focal point is formed or generated at a defined distance from an outer wall of the housing. The above-mentioned advantages with regard to the functional, individual further use of the light rays emerging from the housing is therefore made possible in a particularly advantageous manner.

The distance is preferably between 0 cm and 5 cm, in particular between 0 cm and 4 cm, in particular between 0 cm and 3 cm, in particular between 0 cm and 2 cm, for example between 0.5 cm and 1, 5 cm. The focal point is thus placed relatively close to the housing, so that just after the focus takes place again given fanning the light beams to a widened light cone is advantageous in that, for example, in a solid food support, thus in an anteroom to the cooking appliance (in the depth direction of the cooking appliance considered), can be illuminated as large as possible. As a result, such a fanning out is made possible by this embodiment that the food support is illuminated from above with this one light source at least 50 percent of its surface, preferably at least 70 percent of its surface. On the other hand, it is also possible by this defined distance in a particularly advantageous manner, to allow the most extensive and area-compact coupling these emerging from the housing light rays in a door of the cooking appliance when the door is closed. Since the door then usually rests against the housing or the

Einkoppelbereich of the door-side optical element in particular close to one

Outside wall of the housing, from which exit the light rays of the light source, is arranged, such a close laying of the focal point to the outer wall of the housing advantageous to then allow the best possible and extensive coupling of the light rays in the door. It is preferably provided that the door has at least one optical element of the lighting device, in which light rays of the light source in

Closed state of the door are preferably coupled. The focus is in the closed state of the door at a coupling end of the optical element or within a distance interval considered in the direction of light propagation of preferably +/- 3 cm, in particular +/- 2cm, in particular +/- 1 cm thereto. The above-mentioned advantages are thereby achieved to a particular extent and the coupling of the emerging from the housing light rays in the door is particularly precise and circumferentially possible. In addition, a particularly compact design is possible. This door-side optical element is thus a subcomponent of

Lighting device, which is arranged outside the housing and inside the door. The

Lighting device is thus arranged in this embodiment in sub-components also inside the door. It is preferably provided that this coupling end has an area which is greater than the area of the focal point. This is a further very advantageous embodiment, since thus the focused light in the focus or these light beams are particularly extensively coupled into the door. Preferably, the lighting device has a light guide, which is arranged in the door. With the light-light device, in the closed state of the door, light beams radiated by the light source can be radiated forward out of the door and / or backwards out of the door viewed in the depth direction of the cooking appliance. By means of such a configuration, in the closed state of the door, specific areas in front of the door and thus outside the cooking appliance can be illuminated individually. In addition, it is then also possible to illuminate components located in the door, which in turn can be perceived on external viewing of the door as well as externally illuminated elements. In addition, it is also possible to radiate defined in the closed state of the door from the door light in the cooking chamber, so that even in the closed state of the door is an illumination of portions of the oven with radiated from the door light is possible. As a result, the consideration of partial areas of the cooking chamber is improved even in the closed state of the door. It is preferably provided that the lighting device is designed to illuminate an anteroom lying in front of a feed opening of the cooking chamber in the depth direction of the cooking appliance when the door is open. The vestibule is arranged at such a distance from the focal point that the illumination of the vestibule takes place with a light cone that has been widened again in the direction of the propagation of the light beams after the focal point. This can be done as large as possible and uniform or homogeneous illumination of the vestibule. Just when, for example, with the door open a food support from the cooking chamber is at least partially pulled out and is in this vestibule, this food support can be illuminated from above through this widened light cone over a large area and illuminated, in particular to be broadcast very homogeneously.

It is preferably provided that the lighting device has a first

Operating mode in which the light rays are emitted with a first luminous flux at a light exit region of the housing. The lighting device has at least one second operating mode, in which the light beams are radiated out of the housing in a second luminous flux different from the first luminous flux at the light exit region. This is a further very advantageous embodiment because thus a different luminous flux can be generated in different circumstances. Depending on the location of the area to be illuminated and / or an object to be illuminated in the cooking appliance and / or outside of the cooking appliance, a more appropriate illumination can thus be provided, so that an observer always has a situation-adapted illumination. The perceptibility in the

different areas and / or the different elements is then given individually improved. Demand-oriented can then also be illuminated in areas that are partially concealed or located in niches or located in the rear of the cooking chamber and thus illuminated with individual brightness. Other effects, such as unwanted dazzling or excessive illumination of elements and / or areas can be avoided. Thus, not only an improved optical illumination with regard to the desired and adapted brightness is always achieved, but also a user-friendly perception of this illumination is made possible. Preferably, it is provided that the execution of the first operating mode is coupled to a first position of the door and / or the execution of the second

Operating mode is coupled to a second position of the door. Thus, it can be provided, for example, that the individual luminous flux of the lighting device is automatically adjusted depending on the respective position of the door. This can be done for example via a control unit. It can be provided that the first position of the door is a fully closed position and / or the second position of the door is such a position in which an anteroom forms in front of a feed opening of the cooking chamber, which is bounded down through the door. It can be provided, for example, that in the first operating mode the luminous flux is higher than in the second operating mode. Just when, especially in the first operating mode, the door is completely closed, then a higher luminous flux can be generated to provide sufficient illumination in the interior of the oven, so that even through the closed door, the cooking chamber can be observed improved for a user , In addition to or instead of this, then also the blasting of the door external to the device and thus in particular, for example, carried forward with a higher luminous flux, so that an individual lighting of areas in advance is improved even when the door is closed. Also, in the context, components in the door that are to be individually illuminated can then be illuminated with a higher luminous flux in this respect, so that the front perceptibility of an observer who sees the door at the front is improved.

On the other hand, it can also be provided in an alternative embodiment that, for example, in the second operating mode, in which in particular the door is at least partially opened, the light beams are generated with a higher luminous flux than in the first operating mode. This can be a comprehensive illumination

in particular an antechamber in front of a cooking chamber, so that even with a reduced number of light sources, a particularly bright and homogeneous illumination of a large surface area and, in particular, a larger volume area can take place in this anteroom. Also, a food support can thus be illuminated sufficiently bright with a minimized number of light sources in its withdrawn state from the oven from above. In particular, it is also provided that the light beams with individual light intensity can be generated in the different operating states. The property of

variable light intensity at least one orifice is advantageous in this regard. As already mentioned, in an advantageous embodiment in a state of

Lichteinkopplung in the door of the luminous flux different from a state when an extracted food support in the vestibule of the cooking chamber to be illuminated from above by at least one light source. Especially when, in conjunction with the above preferred example of the individual design and locally defined generation of a focal point of

Light rays outside the housing then also after the focal point, especially when the door is open, a defined expansion of the light rays to follow a cone of light, the light intensity can then be adjusted individually by this design of the individual luminous flux, which is the quotient of the luminous flux through the solid angle represents.

It is preferably provided that the two different luminous fluxes in the at least two different operating states differ by at least the value of 50 lumens.

The difference of the luminous fluxes in different operating states can also be dependent on the number of light sources of the lighting device, which are then each used for individual illumination, for example, of an anteroom in front of the cooking chamber. The same can also be done depending on how many

Light sources of a lighting device are present and find for a coupling of light rays in the door with the door closed use.

In an advantageous embodiment, the at least one housing-side light source of the lighting device viewed in the depth direction in the region of a control panel or a switch front or a flange, for example one

Flange of a muffle, which is limited to the walls of the oven, or even on a vertical front bar, which is designed as a Lisene be arranged. Preferably, it is provided in the cooking appliance that at least one light aperture with the door open serves as a planar light source for illuminating the antechamber and is designed accordingly, so that a correspondingly expanded light cone acts here. In the closed state of the door, the light beams of the light source are passed through this light aperture via a further transition to the door. Here it can then be provided that the housing-side optical element of the lighting device is advantageously formed such that it has a focusing effect and in this respect forms the housing-side external focal point. The door-side optical element of the lighting device may be a light guide or an optical fiber connection. It can be provided an optical fiber or a plurality of optical fibers. In addition or instead of this, at least one lens or a reflector or a mirror can also be used. The mentioned optical elements can be made of different ones

Be made of materials such as glass or silicone or PMMA or PC or PS or the like.

It can be provided that the illumination device inside the door has an optical element whose coupling-in region, in which the light beams emitted by the housing are coupled in, is designed as an optically acting collection region. Depending on how the light beams arrive at this coupling-in region of the door-side optical element, this collecting region can be designed as a lens convex at least on one side or a concave lens on at least one side.

The lighting device thus preferably has at least two separate optical elements, of which an optical element is arranged outside and inside the housing, and the second optical element is arranged outside the housing and inside the door.

In an advantageous embodiment, these at least two optical elements are each designed as optical focusing elements. For example, two lenses may be provided here, or a lens and a lens

Optical fiber, which is designed as a fiber optic or fiber optic rod, or a lens and a mirror or a lens and a reflector may be provided. Preferably, the housing-side configuration of the optical element is such that this optical Element has a focal point at a distance between 0.5 cm and 2 cm, in particular between 0.5 cm and 1, 5 cm, in particular 1 cm.

It can be provided that the optical element, which is arranged on the housing side, is offset back inwards to the outer wall, from which the light exits from the housing. As a result, this optical element is protected accordingly. This also provides some protection against unwanted light scattering in the device.

For example, a pipe section can be arranged between the lens and the outer wall or a lateral panel can be formed. This embodiment with a

Pipe piece or a diaphragm can also be such that the pipe section or the aperture is formed on the inside with a, for example, frosted, dark surface.

The further optical element, which is arranged on the door side, can be attached to the

Einkoppelbereich be formed with a concave surface or flat. It can be provided that this light collecting region of the optical element, which is arranged on the door side, integrated and thus formed integrally with this optical element. This avoids further media transfer of the light rays in the door between separate optical elements.

It can also be provided here that this optical element, in particular the coupling-in region, which is preferably designed as a light-collecting region, is arranged set back in relation to an outer side of the door inwards. Here, too, the advantages already mentioned above, as have been achieved in the case of a bent or set back arrangement of the optical element in the housing, can then be made possible. It can be provided that this optical element in an upper region of the door, for example in an upper cover, which also as

Top panel is called, is arranged.

In a further advantageous embodiment it is provided that the

Lighting device for generating light beams is formed in a first light color and at least for generating light beams is formed in a first different second light color. In addition or instead, it may be provided that the illumination device is designed to generate a continuous light of the light beams and / or of a pulsed light of the light beams. In particular, it is provided that different operating functions of the cooking appliance are visually displayed by the different light colors and / or different values of operating parameters of at least one operating function of the cooking appliance are optically displayed. Additionally or instead, it can be provided that the light beams differ depending on a pulse frequency

Operating functions and / or different values of operating parameters of at least one operating function of the cooking appliance are displayed optically.

It is preferably provided that the light source is a light-emitting diode. It can also be a multicolor LED. It is preferably provided that the

Lighting device has a light source that generates light rays with which an anteroom in the depth direction in front of the cooking chamber can be illuminated when the door is open and also generates light rays which are radiated from the housing into the door when the door is closed. There are then with a single light source light beams for different uses or different specific

Lighting scenarios generated.

Preferably, the lighting device has at least two light sources, each of which is designed for this above-mentioned functionality. Preferably, these light sources viewed in the height direction of the cooking appliance above the

Loading opening of the cooking chamber arranged and arranged in particular viewed in the width direction on opposite sides.

Another independent aspect of the invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door, which is movably arranged on the housing and is designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has a light source. The lighting device is arranged at least with partial components on the housing. The lighting device has a first

Operating mode in which the light beams are radiated with a first luminous flux at a light exit area from the housing in the closed door and has an at least second operating mode in which the light beams with a different from the first luminous flux second luminous flux to the light exit area are emitted from the housing in an anteroom formed with the door open in front of the cooking chamber.

Another independent aspect of the invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door, which is movably arranged on the housing and which is designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has at least one light source. The lighting device is arranged at least with partial components on the housing. The lighting device has an optical device, which has a first optical focusing element in the housing, and which has a separate second optical focusing element, which is arranged in the door.

Embodiments of the above-mentioned first independent aspect of the invention are to be considered as advantageous embodiments of the further independent aspects.

The terms "top", "bottom", "front", "rear", "horizontal", "vertical", "depth direction", "width direction", "height direction", etc., are the positions given when the device was used and disposed as intended and orientations indicated.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, are not only in the respectively indicated combination but also in others

Combinations usable, without departing from the scope of the invention. There are thus also embodiments of the invention as encompassed and disclosed, which are not explicitly shown and explained in the figures, but by separated

Feature combinations emerge from the described embodiments and can be generated. Embodiments and combinations of features are also to be regarded as disclosed, which thus do not have all the features of an originally formulated independent claim. In addition, embodiments and combinations of features, in particular by the embodiments set out above, are to be regarded as disclosed, which exceed or deviate from the combinations of features set out in the back references of the claims.

Embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:

Fig. 1 is a schematic front view of an embodiment of a

cooking appliance according to the invention;

Fig. 2 is a perspective view of the cooking appliance according to FIG. 1 with

opened door;

FIG. 3 is a side view of the cooking appliance of FIG. 1; FIG.

4 is an illustration of subcomponents of a lighting device of the

cooking appliance;

Fig. 5 is a further schematic representation of subcomponents of

Lighting apparatus; 6 shows an enlarged view of the cooking appliance according to FIG. 1 to FIG. 3 in a partial section with the door closed;

7 shows an exemplary representation of a partial region of an optical element of the illumination device, which is arranged on the door side.

In the figures, the same or functionally identical elements are the same

Provided with reference numerals.

In Fig. 1 a cooking appliance 1 is shown in a front view, which may be for example an oven or a steam cooker or a Mikrowellengargerät. The cooking appliance 1 has a housing 2, in which a cooking chamber 3 is designed for preparing food. The cooking chamber 3 is bounded by walls of a muffle, which is arranged in the housing 2. Front side, the muffle and thus also the cooking chamber 3 a Charging opening 4 (Fig. 2), which is closed by a door 5. The door 5 is arranged here pivotably on the housing 2, the door 5 has, for example, a handle 6 and is at least partially formed with a transparent region 7, through which the door 5 can be seen through in the closed state and thus can be seen in the cooking chamber 3 , The cooking appliance 1 also has in

Height direction (y-direction) considered above the door 5, a control panel 8 on which an operating device 9 is arranged.

2, the cooking appliance 1 is shown in a perspective view and with the door 5 open. Furthermore, a separate food support 10 is shown in FIG. 2, which can be, for example, a baking sheet or a grate or the like. On the food support 10, a food to be cooked 1 1 is applied here by way of example. The food support 10 is here pulled out in the depth direction (z-direction) from the cooking chamber 3 and is thus considered in the depth direction in an anteroom 12 in front of the cooking chamber 3. The cooking appliance 1 also has a lighting device 13. Im shown

Embodiment, the lighting device 13, a first light source 14, which may be, for example, a light emitting diode, in particular a multi-color light-emitting diode. By way of example, it is provided here that the first light source 14 viewed in the vertical direction (y direction) above the cooking chamber 3 and adjacent to the

Charging opening 4 is arranged. In particular, it is provided that a second light source 15 of the lighting device 13 is provided here. The two

Light sources 14 and 15 are arranged in the width direction (x-direction), on opposite sides of the housing 2 and disposed in the housing 2, respectively. They can be arranged, for example, in the area of the control panel 8 or on a vertical respective slat, which represents a front-side viewing component. They may also be arranged, for example, on a front flange, in particular the muffle.

These light sources 14 and 15 are thus arranged outside the door and provide

Sub-components of the lighting device 13, which are arranged in the housing 2.

In Fig. 3 the cooking appliance 1 according to FIG. 2 is shown in a side view. The vestibule 12 can be seen here. It is illuminated here by the illumination device 13, in particular the light beams 16 and 17 of the light sources 14 and 15. The rays of light 16, 17 here each form an expanded cone of light 22, which is directed obliquely forward and downward and the food support 10 illuminated from above.

The illumination device 13 has an optical device 18, as shown in the exemplary illustration in FIG. 4. The optical device 18 is designed for defined influencing of the light beams of the light sources 14, 15 such that these light beams are bundled outside the housing 2 in a focal point 19. The focal point 19 is formed at a defined distance from an optical element 20 of the optical device 18 and thus in particular at a defined distance from an outer wall 21 of the housing 2. Preferably, a distance A is between 0 cm and 2 cm.

As can already be seen in FIG. 4, the light beams 16, which are shown here by way of example, are concentrated in the focal point 19 and then expand after the light beam 16

Focus point 19, viewed in the direction of light propagation, again and form the already mentioned in this respect light cone 22, as can be seen in Fig. 2 and Fig. 3, only when the door 5 is open.

In Fig. 5 is a schematic view of an enlarged view of this

To recognize light cone 22.

Advantageously, it is thus provided that the optical device 18 has a door-external and here housing internal optical element 20, which is a first

Focusing element is. In particular, it is provided that the illumination device 13 has a housing-external and intra-door further optical element 23, as shown by way of example in Fig. 7. This further optical element 23 may also be formed in an advantageous embodiment as at least partially focusing element. This is given in the embodiment shown by the fact that a coupling-in region 24 of this optical element 23 has a concave surface 25. Due to the orientation of the light beams 16 or 17 incident in the coupling-in region 24, this concave surface 25 acts here collecting or bundling. In another embodiment and orientation of the light beams 16, 17, as they impinge on the Lichteinkoppelbereich 24, This surface can also be designed otherwise, for example, be designed flat. In particular, this optical element 23, which is arranged in the door 5, thus has, in particular, a focusing area or light collecting area, which can also be integrated and thus formed in one piece with the optical element 23.

This Lichteinkoppelbereich 24, which is a coupling end of the optical element 23, the light emitted from the housing 2 of the light sources 14 and 15 can be coupled in the closed state of the door 5. Preferably, it is provided that this optical element 23 is arranged in the door 5 in such a way that the coupling-in region 24 in the closed state of the door 5 at the focal point 19 or within a distance interval of +/- 1, 0 cm at this

Focus 19 is arranged. In this regard, reference is made to Fig. 6, in which a portion of a

Vertical section through the cooking appliance 1 in the closed state of the door 5 is shown. As can be seen here, the optical element 20, which is only symbolically shown here, faces the optical device 18 directly adjacent to the coupling region 24. As is shown in FIG. 4, this optical element 20 can be set back inwards relative to the outer wall 21. In this regard, as shown in Fig. 4 then a diaphragm area or a pipe section 26 may be provided. This can be formed matt on the inside in an advantageous embodiment. In another embodiment, it may be provided that this optical element 20, as shown symbolically in FIG. 6, extends up to the outer wall 21 or even is arranged standing beyond.

In all versions is provided in an advantageous manner that this

Einkoppelbereich 24 of an outer side 27, as shown in Fig. 6, the door 5 is set back inside, at the focal point 19 or within the aforementioned distance interval of +/- 1, 0 cm.

It is preferably provided that the lighting device 13 in the closed state of the door 5 via the optical device 18 in the optical element 23rd coupled light or light beams 16, 17 radiates out of the door 5 out into the cooking chamber 3, as indicated in Fig. 6, and / or viewed in the depth direction the cooking chamber 3 facing away from the door 5 radiates forward, as also shown in FIG 6 is indicated. For this purpose, the lighting device 13 has a light-guiding device 29 in the door 5, which offers these emission possibilities when the door 5 is closed.

In a particularly advantageous manner, it is provided that the illumination device 13 has a first operating mode in which the light beams 16, 17, as emitted by the light sources 14, 15, are emitted from the housing 2 with a first luminous flux at a first light exit region, and the

Lighting device 13 has at least one second operating mode in which these light beams 16, 17 are emitted from the housing 2 with a second luminous flux different from the first luminous flux at the light exit region. This light exit region can be, for example, the exit opening on the outer wall 21 or the light outcoupling region 29 (FIG. 4) of the optical element 20, which is the last optical element in front of the outer wall 21 in the direction of the light propagation with possibly a plurality of existing optical elements in the housing 2. Preferably, the carrying out of the first operating mode is coupled to a first position of the door 5 and / or the execution of the second operating mode is coupled to a second position of the door. The first position of the door 5 may preferably be the fully closed position, as shown in Fig. 6 and Fig. 1. The second position of the door 5 is one in which an anteroom 12 is formed in front of the feed opening 4 of the cooking chamber 3, said antechamber 12 is limited by the at least partially open door 3 downwards. It can also be provided that the

Lighting device 13 for generating light beams 16, 17 is formed in a first light color and at least for generating light beams 16, 17 is formed in a first different second light color. In addition or instead of this, provision may also be made for the lighting device 13 to generate a continuous light of the light beams 16, 17 and / or a pulsed light of the light beam

Light beams 16, 17 is formed. Here, too, an individual assignment to different operating states can take place, so that, for example, in one Operating state, the light beams 16, 17 are generated in a continuous light, and in a second operating state, a pulsed light of the light beams is generated. It may be provided in the context that, depending on the pulse rate and / or the light color, a specific operating function of the cooking appliance 1 is optically displayed and / or a specific value of an operating parameter of at least one

Operating function is visually displayed.

LIST OF REFERENCE NUMBERS

1 cooking appliance

2 housings

3 cooking space

4 feed opening

5 door

6 handle

7 transparent area

8 control panel

9 operating device

10 food carriers

1 1 food to be cooked

12 entrance hall

13 lighting device

14 light source

15 light source

16 light beams

17 light beams

18 optical device

19 focus

20 optical element

21 outer wall

22 light cones

23 optical element

24 coupling end

25 area

26 pipe section

27 outside

28 light guide

29 light extraction area

Claims

claims

Cooking appliance (1), with a housing (2) in which a cooking chamber (3) is formed, and with a door (5) which is movably arranged on the housing (2) and is designed to close the cooking chamber (3) , and with one

Lighting device (13) having at least one light source (14, 15), wherein the lighting device (13) is arranged at least with partial components on the housing (2), characterized in that the

Lighting device (13) has an optical device (18), which is designed for the defined influencing of the light beams (16, 17) of the light source (14, 15) such that the light beams (16, 17) outside of the housing (2) in a

Focus (19) are bundled.

Cooking appliance (1) according to claim 1, characterized in that the focal point (19) at a defined distance (a) to an outer wall (21) of the housing (2) is formed.

Cooking appliance (1) according to claim 2, characterized in that the distance (a) is between 0 cm and 5 cm.

Cooking appliance (1) according to one of the preceding claims, characterized in that the door (5) has at least one optical element (23) of the lighting device (13), in which light beams (16, 17) of the light source (14, 15) in the closed State of the door (5) can be coupled, wherein the focal point (19) in the closed state of the door (5) at a coupling end (24) of the optical element (23) or within a distance interval of +/- 3.0 cm thereto.

Cooking appliance (1) according to claim 4, characterized in that the coupling end (24) has a surface (25) which is larger than the surface of the focal point (19).

Cooking appliance (1) according to one of the preceding claims, characterized in that the door (5) has a light-guiding device (28) of the lighting device (13). has, with which in the closed state of the door (5) from the light source (14, 15) radiated light beams (16, 17) in the depth direction (z) of the cooking appliance (1) forward from the door (5) and / or to the rear from the door (5) can be emitted.

7. Cooking appliance (1) according to one of the preceding claims, characterized in that the lighting device (13) for illuminating a in the depth direction (z) of the cooking appliance (1) in front of a feed opening (4) of the cooking chamber (3) lying antechamber (12) is formed when the door (5) is opened, wherein the antechamber (12) is spaced from the focal point (19), that the illumination of the vestibule

(12) with a in the direction of propagation of the light beams (16, 17) to the focal point (19) again widened light cone (22).

8. Cooking appliance (1) according to one of the preceding claims, characterized in that the lighting device (13) has a first operating mode in which the light beams (16, 17) with a first luminous flux at a light exit area from the housing (2) are radiated , and at least a second one

Operating mode, in which the light beams (16, 17) are emitted with a second light flux different from the first luminous flux at the light exit region of the housing (2).

9. cooking appliance (1) according to claim 8, characterized in that the performing of the first operating mode with a first position of the door (5) is coupled, and / or performing the second operating mode with a second position of the door (5) is coupled ,

10. Cooking appliance (1) according to claim 9, characterized in that the first position of the door (5) is a completely closed position and / or the second position of the door (5) is one in which a vestibule (12) in front of you

Charging opening (4) of the cooking chamber (3) which is bounded below by the door (5).

1 1. Cooking appliance (1) according to one of the preceding claims, characterized in that the lighting device (13) for generating light beams (16, 17) is formed in a first light color and at least for generating Light beams (16, 17) is formed in the first different second light color and / or for generating a continuous light of the light beams (16, 17) and / or a pulsed light of the light beams (16, 17) is formed.

12. cooking appliance (1) according to claim 1 1, characterized in that

different light colors different operating functions of the cooking appliance (1) are optically displayed and / or different values of operating parameters of at least one operating function of the cooking appliance (1) are optically displayed and / or different depending on a pulse frequency of the light beams

Operating functions and / or different values of operating parameters of at least one operating function of the cooking appliance (1) are displayed optically.

13. Cooking appliance (1) according to one of the preceding claims, characterized in that the light source (14, 15) is a light-emitting diode, in particular a multi-color light-emitting diode.