Fume extractor hood with means for producing two light cones and kitchen section with fume extractor hood

Abstract

The present invention relates to a cooker hood (100) comprising a rear (110) and two side surfaces (120) and means for generating at least two light cones (140, 150), wherein at least one first light cone (140) is emitted in a direction (146) directed downwards towards the surface of the vertical projection of the cooker hood (100). The cooker hood is characterized in that the means for generating at least two light cones (130) are adapted such that at least one second light cone (150) is emitted in a direction (156) whose horizontal component points towards the plane (112) in which the rear (110) of the cooker hood (100) lies, or towards at least one plane (122) in which one of the two side surfaces (120) of the cooker hood (100) lies. Furthermore, the invention relates to a kitchen section with such a range hood (100).

Description

Technical field

[0001] The present invention relates to an extractor hood with means for generating at least two light cones, as well as a kitchen section with an extractor hood. State of the art

[0002] Various extractor hoods are known in the prior art. In many cases, the extractor hoods have a lighting unit that illuminates a cooking surface located beneath the extractor hood. To illuminate the cooking surface with high luminance, it is known in the prior art to focus the generated light cone onto the cooking surface, i.e., to adjust the opening angle and direction of the light cone so that the cooking surface is essentially illuminated. Such an extractor hood is disclosed, for example, in US 2015 / 184869 A1.

[0003] Furthermore, US 2019 / 114935 A1 discloses a cooking connection system for a cooking appliance. In particular, the system may include a camera assembly, an image monitor, a lighting assembly, and a controller. The lighting assembly may be arranged on the housing above the cooking appliance. The lighting assembly may include a light source directed toward the cooking surface to direct light thereto.

[0004] Furthermore, GB 2 486 507 A describes an extractor hood with duct lighting. The extractor hood has a duct and light sources that project light onto the duct. The light source can be part of the fan housing and project downwards onto the hood or upwards from the hood housing.

[0005] Finally, DE 10 2016 111 824 A1 discloses a lighting device for installation in an extractor hood, as well as an extractor hood and a method for adjusting the brightness in a lighting area. The lighting device is intended for installation in an extractor hood that is arranged or can be arranged at a distance from a lighting area to be illuminated. The lighting device comprises a lighting module with at least one first lighting element for illuminating a first section of the lighting area and at least one second lighting element for illuminating a second section of the lighting area located outside the first section.Furthermore, the lighting device comprises an additional lighting module with at least one first additional lighting element for illuminating the first section and at least one second additional lighting element for illuminating the second section, as well as a control device for adjusting a brightness in the illumination area by controlling the lighting module and / or the additional lighting module.

[0006] Conventional cooktops are made of glass or glass ceramic. Cooktops made of black material or at least partially coated in black are particularly preferred. A disadvantage of the known designs of the extractor hood lighting unit in the prior art is that, due to the nature of conventional cooktops, a significant portion of the light is absorbed by the often dark cooktop, and a further, significant portion of the light is reflected by the cooktop's reflective properties. The light is usually reflected upwards past the viewer due to spatial restrictions caused by the design of the extractor hood. Both of these effects make the lighting appear dark to the viewer. Even if the reflected light did hit the viewer, this would be disadvantageous because reflected light can dazzle the viewer.Another problem with this design is that this lighting brightly illuminates cookware on the hob, but the wall behind it is not illuminated, which can lead to an unfavorable contrast between the cookware and the background for a viewer. Description of the invention

[0007] Based on the known prior art, it is an object of the present invention to provide improved lighting on an extractor hood.

[0008] The object is achieved by an extractor hood with means for generating at least two light cones having the features of claim 1. The object is further achieved by a kitchen section with an extractor hood according to claim 13.

[0009] Advantageous further developments arise from the subclaims, the description and the figures.

[0010] Unless otherwise stated, directional references such as front, rear, top or side are understood below to refer to an extractor hood in its installed state. Front or the front side refers to the side facing the user of the extractor hood. Rear or the back or rear side is the side facing away from the user of the kitchen appliance. Lateral refers to the side areas or side surfaces that are arranged between the front and rear sides. In the figures, the y-axis points forward, the z-axis points upwards and the x-axis points to the side. The x-direction and the y-direction therefore refer to horizontal directions and the z-axis to the vertical direction. The y-direction is the direction from the back to the front and the x-direction the direction from one side surface to the opposite side surface.

[0011] According to a first aspect, the object is achieved by an extractor hood comprising a rear side and two side surfaces and means for generating at least two light cones, wherein at least a first light cone is emitted in a direction directed downwards onto the surface of the vertical projection of the extractor hood, characterized in that the means for generating at least two light cones comprise a lighting unit and are adapted such that at least a second light cone is emitted in a direction whose horizontal component points towards the plane in which the rear side of the extractor hood lies or towards at least one plane in which one of the two side surfaces of the extractor hood lies, the lighting unit has a single light source for generating the at least two light cones and the lighting unit has an optical system connected downstream of the single light source.

[0012] The extractor hood preferably has an extractor housing in which the extractor hood's fan is located and in which the extractor hood's exhaust opening can be formed. The exhaust opening can be located on the underside of the extractor hood or on the front. Additionally, the extractor hood can have a viewing hood in which the exhaust opening is located. The extractor hood has a rear side and two side surfaces. The rear side, also referred to as the back side, is the side that is mounted on a mounting wall, in particular a kitchen wall. The side surfaces extend from the rear wall forward.

[0013] The viewing hood can, for example, be provided on the underside of the extractor hood housing. The rear side is therefore the side of the extractor hood housing that rests against the mounting wall or the side of the viewing hood that rests against the wall. The rear side of the extractor hood can therefore be a substantially flat rear side of the extractor hood housing, which can be used to attach it to a wall, such as a kitchen back wall. The side surface of the extractor hood is the side surface of the extractor hood or of the viewing hood that are the greatest distance apart from each other on the underside of the extractor hood. The side surface of the extractor hood can therefore be a substantially flat side of the extractor hood housing, which can be used to attach it to a wall, such as a kitchen side wall, or to rest against this wall.

[0014] The means for generating at least one light cone are preferably provided on the underside of the extractor hood. According to the invention, the means for generating the at least one light cone comprise at least one lighting unit. The means are therefore also referred to below as the lighting unit.

[0015] According to the invention, at least a first and a second light cone are generated. The designations "first" and "second" serve only to facilitate reference to the light cones and do not represent a temporal designation.

[0016] The at least one first light cone is emitted in a direction directed downward toward the surface of the vertical projection of the extractor hood. A hob is generally arranged in the surface of the vertical projection or at least in the plane of the surface of the vertical downward projection of the extractor hood. Thus, the at least one first light cone is directed downward toward the hob. The light cone can be vertically aligned, meaning its radiation direction can be perpendicular, or the radiation direction can be inclined relative to the vertical.

[0017] According to the invention, the means for generating at least two light cones are adapted such that at least a second light cone is emitted in a direction whose horizontal component points to the plane in which the rear of the extractor hood lies or to at least one plane in which one of the two side surfaces of the extractor hood lies.

[0018] The first and second light cones are preferably each emitted downwards or obliquely downwards, i.e. they are each emitted in a direction having a vertical component greater than zero and the vertical component is directed downwards.

[0019] According to the invention, the means for generating the at least two light cones are also adapted such that the second of the at least two light cones is emitted rearward or to the side. For this purpose, the second of the at least two light cones is emitted in a direction whose horizontal component points toward a plane in which the rear or one of the two side surfaces of the extractor hood lies.

[0020] The plane in which the rear or one of the two side surfaces lies can be understood as an extension of the rear or the corresponding side surface of the extractor hood. If the extractor hood is mounted with its rear side against a room wall, the plane in which the rear side lies can essentially correspond to this room wall. If the extractor hood is mounted in such a way that the rear wall is mounted close to, preferably within 1 m, 0.5 m, or 0.2 m of, the room wall, with the room wall preferably being essentially parallel to the rear wall of the extractor hood, the said plane can also be understood as this room wall.If the extractor hood is mounted in such a way that the side surface is mounted close to, preferably within 1 m, 0.5 m or 0.2 m of, a room wall, whereby the room wall is preferably parallel to the side surface of the extractor hood, the said plane can also be understood to mean this room wall.

[0021] The direction, origin, intensity distribution as a function of the radiation direction, and the shape of the emitted light are referred to as the light cone. However, this term is not intended to limit the shape, intensity distribution, direction, or effect of the emitted light to an exact cone shape. Rather, the term "light cone" refers to a rough description of the light emitted by the medium. The light cone used to describe the emitted light has a directional vector and an aperture angle. The direction of the light cone is generally understood to be the direction of the axis. The maximum luminous flux of the light cone preferably lies along this axis.

[0022] The means for generating the at least two light cones can be adapted, for example, by their structure, orientation and / or position on the extractor hood to generate the specifically aligned light cones.

[0023] According to the invention, the means for generating at least two light cones are adapted such that the first and second light cones emit light at least partially downwards and at least one of the light cones, in particular the second light cone, also emits the light in a rearward and / or sideward direction. This allows for the illumination of a surface beneath the extractor hood, in particular a hob, and a surrounding surface, for example a wall behind or next to the hob. This allows for focused light to be directed onto the hob, while simultaneously creating a positive subjective impression of bright light, similar to that of a wide-angle spotlight.In addition, the second light cone, which is directed towards a wall behind or next to the hob, can reduce the difference in brightness between cooking vessels on the hob and the wall, thereby improving the user experience of the extractor hood.

[0024] According to the invention, the means for generating at least two light cones comprise a lighting unit. The lighting unit has a single light source.

[0025] A lighting unit is particularly referred to as a unit that is arranged on or in the extractor hood, in particular on or in an extractor housing or a viewing hood of the extractor hood. The lighting unit is preferably provided on or in the extractor hood in such a way that it can illuminate a space outside the extractor housing. Depending on the design variant, this is preferably a lighting unit with which an area in the vicinity of an extractor hood and / or the area of ​​another kitchen appliance can be at least partially illuminated or illuminated. For the purposes of the invention, the environment of an extractor hood or a kitchen appliance is the room in which the extractor hood or the kitchen appliance is operated. The lighting unit is preferably a unit that emits light outwards via at least part of a surface of the lighting unit.In one embodiment, the lighting unit can comprise a lighting housing, and the light is emitted via a portion of the walls of the lighting housing. In particular, the lighting unit is preferably a functional lighting unit for the extractor hood, i.e., it serves to illuminate a work area beneath the extractor hood, in particular a hob and, if appropriate, a worktop in which the hob is accommodated.

[0026] According to the invention, the lighting device has only a single light source. With this single light source, the at least two light cones can be generated by extracting a portion of the light emitted by the light source. For this purpose, an optical system is used, which, for example, has a diaphragm and / or a reflector. This simplifies the design of the lighting unit and thus of the extractor hood. Furthermore, the power consumption is reduced.

[0027] According to one embodiment, the means for generating the at least two light cones are adapted such that the first of the at least two light cones is emitted such that it illuminates a plane located at a predetermined vertical distance below the extractor hood. This plane is preferably horizontal. The predetermined vertical distance is preferably within a predetermined or recommended distance range of the extractor hood to the kitchen work surface below or to a hob arranged below. In a preferred embodiment, the predetermined vertical distance can be in the range of 0.4 m to 2 m, particularly preferably 0.5 m to 1 m, or 0.6 m to 0.8 m. Preferably, only a limited area of ​​this plane is irradiated by the first of the two light cones.For example, an area measuring 1m x 1m and lying vertically beneath the extractor hood, or an area measuring 0.6m x 0.6m and lying vertically beneath the extractor hood and / or an area corresponding to the area of ​​a hob or conventional cooking surface arranged beneath the extractor hood. Preferably, the means for generating the light cones are designed such that the second light cone is emitted such that it illuminates the plane in which the rear or one of the two side surfaces of the extractor hood lies, within the intended vertical distance. Illuminating a wall lying in one of these planes at the vertical distance, i.e. in particular between the extractor hood and a hob, is advantageous since room walls are often light-coloured and therefore reflect a lot of light. In addition, room walls are often matt and have good scattering properties.This allows the light to scatter back, which can make the lighting appear bright.

[0028] According to one embodiment, the at least two light cones are separate and illuminate different areas. Preferably, the first area is a work surface or kitchen work surface located beneath the extractor hood, or preferably a hob located beneath the extractor hood, and the second area is a surface that is preferably located behind the extractor hood, in particular a kitchen back wall, or the second area is a surface that is preferably lateral to the extractor hood, preferably a kitchen side wall or a side wall of a kitchenette.

[0029] According to one embodiment, the first and the second of the at least two light cones can be substantially separate, i.e. they do not overlap, preferably only insignificantly or such that a visible darker region, preferably a local minimum or a saddle point of the luminance, can be recognized between the light cones. Preferably, the means for generating the at least two light cones are adapted such that the at least two light cones are emitted such that the sum of the luminous intensities of the at least two light cones, as a function of the emission direction, has a saddle point between the direction of the maximum of the first and the direction of the maximum of the second of the at least two light cones. Preferably, the sum of the luminous intensities of the first and second light cones at the saddle point is less than 10% of the maximum luminous intensity of the first light cone, preferably less than 1% of the maximum luminous intensity of the first light cone.By ensuring that the light cones do not overlap, uniform illumination of the surfaces can be ensured.

[0030] However, it is also within the scope of the invention for the light cones to overlap. Preferably, however, the light cones only overlap partially. For example, the first light cone can be focused on the hob to provide particularly bright illumination of the hob. The second light cone can point in a similar or the same direction and advantageously also illuminate a rear and / or side wall.

[0031] According to one embodiment, the generated light cones have an inner light cone region and the means for generating the at least two light cones are adapted such that the inner light cone region of the first light cone and the inner light cone region of the second light cone do not overlap.

[0032] The intersection or overlap of two light cones is defined as the intersection or overlap of the luminance on irradiated surfaces. If the intersection or overlap depends on the distance or orientation of the surfaces, the actual irradiated surfaces, or those expected under normal circumstances, must be taken into account. These could, for example, be a combination of the kitchen back wall and / or side wall and the work surface.

[0033] The inner light cone area is an area in which the luminous flux in the light cone is greater than in an outer light cone area.

[0034] According to one embodiment, the inner light cone regions that do not overlap are very bright light cone regions that contain 80% of the luminous flux of the entire light cone. The very bright light cone region is understood to be a conical region that has the same tip and the same axis as the generated light cone, and whose aperture angle is selected such that the cone region contains 80% of the luminous flux. This means that 80% of the luminous flux is emitted in the inner very bright light cone region and strikes the surface to be irradiated.

[0035] According to a further embodiment, the inner light cone regions that do not overlap are bright light cone regions that contain 98% of the luminous flux of the entire light cone. The bright light cone region is understood to be a conical region that has the same tip and the same axis as the generated light cone, and whose aperture angle is selected such that the cone region contains 98% of the luminous flux. This means that 98% of the luminous flux is emitted in the inner bright light cone region and strikes the surface to be irradiated.

[0036] In one embodiment, the means for generating the at least two light cones are adapted such that the aperture angle of the first light cone is less than 90°, preferably less than 70°, and particularly preferably less than 45°. Advantageously, a hob located beneath the extractor hood is illuminated with high luminance.

[0037] Preferably, the aperture angle of the second light cone is larger than that of the first light cone in order to illuminate additional surfaces, which preferably have different reflection and / or scattering properties, and particularly preferably have a higher scattering. Preferably, one of these surfaces is a rear and / or side wall. This leads to a subjectively brighter perception of the illumination by an observer.

[0038] According to one embodiment, the means for generating at least two light cones are adapted such that the aperture angle of the second light cone is less than 120°, preferably between 45° and 120°, and particularly preferably between 45° and 90°. An advantage of this embodiment may be that the area surrounding the hob, such as a rear wall or side wall, is optimally illuminated.

[0039] According to one embodiment, the means for generating the at least two light cones are adapted such that the ratio of the luminous flux of the first to the luminous flux of the second of the at least two light cones is between 1:1 and 20:1, preferably between 7:3 and 9:1, and particularly preferably between 4:1 and 8:1. As a result, the majority of the luminous flux is used to illuminate an area beneath the extractor hood, such as a hob. At the same time, the overall lighting is improved by illuminating other areas, such as the brightness of the lighting perceived by an observer or the contrast between objects illuminated by the first light cone and objects or surfaces illuminated by the second light cone.

[0040] According to one embodiment, the means for generating the at least two light cones are adapted such that the angle of inclination of the first light cone from the vertical axis in the positive y-direction is between -35° and 35°, preferably between -20° and 20°, and particularly preferably perpendicular. Advantageously, the angle of inclination of the light cone is directed toward a hob located beneath the extractor hood.

[0041] According to one embodiment, the means for generating at least two light cones are adapted such that the angle of inclination of the second light cone from the vertical axis in the positive y-direction is between -80° and 0°, preferably between -80° and -20°, and particularly preferably between -80° and -45°. An advantage of this embodiment may be that this light cone illuminates a wall lying in the negative y-direction.

[0042] In a further development, the means for generating at least two light cones are adapted so that, in addition to the first and second light cones, further light cones are generated which can have essentially the same properties as the first or second light cone.

[0043] A further aspect of the invention relates to a kitchen section comprising an extractor hood, a hob, and a kitchen back wall and / or kitchen side wall. The kitchen section is characterized in that the extractor hood is an extractor hood according to the invention.

[0044] Advantages and features described with regard to the extractor hood also apply to the kitchen section, where applicable, and are therefore only described once if necessary.

[0045] According to one embodiment, the hob is arranged below the extractor hood and the means for generating the at least two light cones are adapted such that the first of the at least two light cones is directed substantially towards the hob and the second of the at least two light cones is directed substantially towards at least one of the kitchen back wall and / or kitchen side wall.

[0046] According to one embodiment, the kitchen back wall is a back wall of a kitchen unit or a kitchenette. According to another embodiment, the kitchen side wall is a side wall of a kitchenette.

[0047] According to one embodiment, the kitchen section comprises an extractor hood, a hob, a kitchen back wall and a kitchen side wall, wherein the extractor hood comprises means for generating at least three light cones, wherein the means for generating at least three light cones of the extractor hood are adapted such that the first of the at least three light cones is directed substantially towards the hob, the second of the at least three light cones is directed substantially towards a first kitchen side wall and the third of the at least three light cones is directed substantially towards the second kitchen side wall.

[0048] According to one embodiment, the generated light cones have an inner very bright light cone region which contains 80% of the luminous flux of the entire light cone, wherein the inner very bright light cone region of the first of the at least two light cones and the inner very bright light cone region of the second of the at least two light cones do not overlap on the irradiated kitchen back wall and / or the kitchen side wall.

[0049] According to one embodiment, the generated light cones have an inner bright light cone region which contains 98% of the luminous flux of the entire light cone, wherein the inner bright light cone region of the first light cone and the inner very bright light cone region of the second light cone do not overlap on the irradiated kitchen back wall and / or the kitchen side wall. Short description of the characters

[0050] The invention is explained again with reference to the accompanying figures.

[0051] Showing: Figure 1: an embodiment of a lighting unit of an extractor hood; Figure 2: a schematic representation of components of an embodiment of a lighting unit of the extractor hood; Figure 3: a schematic representation of an embodiment of an extractor hood; Figure 4: a schematic representation of a radiation characteristic; Figure 5: a schematic representation of a light cone with bright and very bright inner regions; Figure 6: a schematic representation of an embodiment of the extractor hood according to the invention, which illuminates a cooking surface and the kitchen back wall with two light cones; Figure 7: a schematic representation of an embodiment of the extractor hood according to the invention, which illuminates a cooking surface and the kitchen back wall with two light cones;Figure 8: a schematic representation of an embodiment of an extractor hood that illuminates a cooking surface and the kitchen back wall with three light cones using two lighting units; Figure 9: a schematic representation of an embodiment of the extractor hood according to the invention that illuminates a cooking surface and a kitchen side wall with two light cones; Figure 10: a kitchen section with an extractor hood according to the prior art that illuminates a cooking surface; and Figure 11: a schematic representation of a light cone with a small opening angle. ; Detailed description of preferred embodiments

[0052] In the following, exemplary embodiments are described with reference to the figures. Identical, similar, or equivalent elements in the different figures are provided with identical reference numerals, and a repeated description of these elements is partially omitted to avoid redundancies.

[0053] In Figure 10is a schematic representation of a kitchen section (200) from the prior art with a kitchen back wall (210), a hob (220), which may be a ceramic hob, for example, a work surface lying in a plane (222), and an extractor hood (100) from the prior art. The extractor hood (100) has a rear side (110), which lies in a plane (112), and comprises a lighting unit (130), which generates a focused light cone (140), i.e. a light cone with a comparatively small opening angle, which is directed onto the hob (220) in order to illuminate it. The light cone is reflected obliquely upwards by the hob (220), which is indicated by the dashed arrows (148) in Figure 10is indicated. A user (B) of the extractor hood (100) perceives the lighting emanating from the extractor hood (100) as dark, since a large portion of the light is absorbed by the hob (220) and another large portion of the light is reflected upwards over the user (B). In contrast, objects on the hob are brightly illuminated, which, as seen from the user (B), has a particularly high and therefore unfavorable contrast to an unlit background, such as the kitchen back wall (210).

[0054] In Figure 11 A focused light cone (140, 150) is shown schematically. The length of a line from the origin to the surface of the schematically shown light cone (140, 150) can be taken as a measure of the luminous intensity.

[0055] In Figure 1A schematic perspective view of a lighting unit (130) is shown. In the illustrated embodiment, the lighting unit (130) represents an LED lighting module having a heat sink. A light source (not visible) is arranged on the underside of the heat sink. In the illustrated embodiment, two light cones (140, 150) are generated via the light source.

[0056] In Figure 2 A schematic representation of the components of the lighting unit (130) is shown. In the embodiment shown, the lighting unit (130) has a light source (132) and an optical system (133) with a lens (1331) and a reflector (1330). In the embodiment according to the invention, the lighting unit (130) has only a single light source (132), which can be an LED, for example. As indicated by the arrows in Figure 2As indicated schematically, light emitted by the light source (132) strikes the lens (1331). This lens can be designed such that it transmits part of the light and couples out another part towards a reflector 1330. The reflector 1330 is aligned such that the light reflected by it exits the lighting unit (130) at a different angle than the light that passed through the lens (1331). The light exiting the lens (1331) forms the first light cone (140) and the light reflected by the reflector (1330) forms the second light cone (150). The illustration in Figure 2 This is a purely schematic representation. The shape, size, and orientation of the components of the lighting unit (130) may vary from those shown.

[0057] In Figure 3An embodiment of a kitchen section (200) according to the invention with an extractor hood (100) according to the invention is shown schematically. The kitchen section (200) differs from the kitchen section (200) of the prior art in Figure 10 mainly in that the lighting unit (130) of the extractor hood (100) generates two light cones (140, 150) which together have a wide opening angle. This not only illuminates the hob (220), but also part of the surroundings, in particular parts of the kitchen back wall (210). An advantage of this lighting according to the invention is that light from the surroundings of the hob (220), in particular from the kitchen back wall (210), is scattered (149), i.e. is reflected in many spatial directions, and an observer thus perceives the scattered light. The hob (220) is illuminated with a further light cone (140) which is focused on the hob (220).

[0058] In Figure 4 A light cone (140) with a wide opening angle is shown schematically. The length of a line from the origin to the surface of the schematically shown light cone can be taken as a measure of the luminous intensity for this solid angle. Light cones with wide opening angles are particularly suitable for illuminating wide areas, including those around the hob.

[0059] In Figure 5A light cone (140, 150) is shown schematically, which is generated by a light source (130). The radiation direction (146, 156) of the light cone is defined by the axis of the light cone (140, 150) and emanates from the tip of the light cone. The luminous intensity of the light cone (140, 150) decreases from the axis outwards. The light cone (140, 150) has a very bright inner light cone region (144, 154) near the center, which contains 80% of the total luminous intensity. The very bright inner light cone region (144, 154) is itself a cone with a smaller opening angle, and with the same axis as that of the light cone (140, 150). The light cone (140, 150) also has a bright inner light cone area (142, 152) near the center, which contains 98% of the total light intensity.The bright light cone area is itself a cone with a smaller opening angle than the light cone (140, 150) and a larger opening angle than the very bright light cone area (146, 156) and with the same axis as that of the light cone (140, 150) and the very bright inner light cone area (146, 156).

[0060] In Figure 6An embodiment of a kitchen section (200) according to the invention and of the extractor hood (100) according to the invention is shown schematically. The kitchen section (200) has a rear wall (210) lying in the plane (112) and a cooking surface (220) lying in a horizontal plane (222), and comprises an extractor hood (100). The extractor hood (100) has a rear wall (110) lying in the plane (112) and a lighting unit (130) which generates a first light cone (140) and a second light cone (150) by means of an optical system (not visible). The first light cone (140) is emitted in a direction (146) and is focused such that it illuminates the cooking surface (220). In the embodiment shown, the light cone (140) is emitted downwards / forwards, i.e.the vertical component of the direction of the light cone (140) is directed downwards and the horizontal component is directed forwards, so that the light cone (140) shines in the plane (222) within the intended vertical distance between the extractor hood (100) and the hob (220). Part of the light is reflected upwards by the hob (220), schematically shown by the arrows (148). Reflected rays follow the principle that the angle of incidence is equal to the angle of reflection. Therefore, the reflected first light cone shines over the user (B). The second light cone (150) is emitted in a direction (156) pointing backwards / downwards, i.e. it has a negative z-component and a negative y-component. The horizontal component essentially points towards the plane (112). The second light cone (150) is scattered by the matt rear wall and part of the scattered light, which is in . Figure 6schematically indicated by the arrows (159), falls on the user (B). In this embodiment of the invention, the first light cone (140) has a luminous flux four times higher than the second light cone (150). Thus, the hob (220) is efficiently illuminated with strong light intensity and good focus, and at the same time, a particularly favorable location, the kitchen back wall (210), is illuminated with a weaker light cone (150).

[0061] In Figure 7 A further embodiment of the extractor hood (100) and the kitchen section (200) according to the invention is shown schematically. This embodiment differs from the embodiment of Figure 6inter alia, in that the extractor hood (100) has a different shape and the lighting unit (130) is arranged near the front of the extractor hood (100). This changes the geometry and the radiation directions (146, 156) of the light cones (140) and (150). In this embodiment, the first light cone (140) is emitted downwards / backwards. The horizontal component of the direction (146) of the first light cone (140) now also points backwards, but to such a small extent that the light cone (140), i.e. the direction (146) of the light cone (140), strikes the plane (222), in particular the hob (220) arranged underneath, and, at the vertical distance from the hob (220) provided for the extractor hood (100), does not strike the kitchen back wall (210). This embodiment differs from the embodiment of Figure 6This is achieved, among other things, by the fact that the second light cone (150) has a wide opening angle, meaning that parts of the hob (220) are also illuminated by the second light cone (150) and also overlap significantly with the first light cone (140). In this embodiment, the first light cone (140) has a higher luminous flux than the second light cone, so that the hob (220) is brightly illuminated.

[0062] In Figure 8 A further embodiment of an extractor hood (100) and the kitchen section (200) according to the invention is shown schematically. This embodiment differs from the embodiment of Figure 7inter alia, in that the extractor hood (100) has two lighting units (130), wherein the lighting unit (130) arranged further forward generates a first and a third light cone (140), both of which are directed at different parts of the cooking surface (220). The lighting unit (130) arranged further back generates the second light cone (150), which is directed at the kitchen back wall (210), i.e. the directional vector (156) points at the kitchen back wall (210). The second light cone (150) in this embodiment also illuminates part of the plane (222) of the worktop. By illuminating the cooking surface (220) with several light cones (140), a more homogeneous illumination of the cooking surface (220) can be achieved.Generating the light cones by means of several lighting units (130) can be additionally advantageous, since this allows a greater variety of lighting geometries to be generated and, if necessary, a simpler optics can be used.

[0063] In Figure 9 A further embodiment of the extractor hood (100) according to the invention and the kitchen section (200) according to the invention is shown schematically. This embodiment differs, among other things, from the embodiment of Figure 7in that the kitchen section has a kitchen side wall (230) instead of a kitchen back wall, which is illuminated by the second light cone (150). The lighting device (130) radiates the second light cone (150) in the -z / -x direction such that the directional vector (156) of the second light cone (150) points to a plane (122) in which one of the side walls (120) of the extractor hood (100) lies. The light cone (150) strikes this plane (122) within a vertical distance from the hob (220) provided for the extractor hood (100). The directional vector (156) points to the kitchen side wall (230). This also achieves favorable lighting for a kitchen geometry in which the extractor hood (100) is arranged next to a kitchen side wall (230). List of reference symbols

[0064] 100 Extractor hood 110 Rear 112 Plane in which the rear lies 120 Side surface 122 Plane in which one of the side surfaces lies 130 Lighting unit 132 Light source 133 Optical system 1330 Reflector 1331 Lens 140First light cone 150Second light cone 142, 152Inner bright light cone area of ​​the first / second light cone 144, 154Inner very bright light cone area of ​​the first / second light cone 146, 156Direction of radiation of the first / second light cone 148, 158Reflected light of the first / second light cone 149, 159Scattered light of the first / second light cone 200Kitchen section 210Kitchen back wall 220Cooktop 222Level work surface 230Kitchen side wall BUser

Claims

1. Extractor hood (100) that comprises a rear side (110) and two side surfaces (120) and means for generating at least two light cones (140, 150), wherein at least one first light cone (140) is emitted in a direction (146) that is oriented downward onto the surface of the perpendicular projection of the extractor hood (100), characterised in that the means for generating at least two light cones (140, 150) comprise an illuminating unit (130) and are adapted so that at least one second light cone (150) is emitted in a direction (156), the horizontal component of which points to the plane (112), in which the rear side (110) of the extractor hood (100) lies, or to at least one plane (122), in which one of the two side surfaces (120) of the extractor hood (100) lies that the illuminating unit (130) has a single light source (132) and an optical system (133), wherein the optical system is connected downstream of the single light source (132) that the at least two light cones (140, 150) are generated by decoupling a portion of the light that is emitted by the single light source (123).

2. Extractor hood (100) according to claim 1, wherein the light cone (140, 150) in each case is emitted in a direction (146, 156), the vertical component of which points downwards.

3. Extractor hood according to one of claims 1 or 2, wherein the optical system (130) comprises a reflector (1330), an aperture and / or at least one optical lens (1331).

4. Extractor hood according to one of claims 1 to 3, wherein the illuminating unit for generating the at least two light cones (130) are adapted so that the first of the at least two light cones (140) is emitted so that this irradiates a plane (222) that is provided at a vertical distance below the extractor hood and that the second of the at least two light cones (150) is emitted so that this irradiates the plane (112, 122), in which the rear side (110) or one of the two side surfaces (120) of the extractor hood (100) lies, within the provided vertical distance.

5. Extractor hood (100) according to one of the preceding claims, wherein the light cones (140, 150) that are generated have an inner light cone region (144, 142, 154, 152) and the illuminating unit for generating at least two light cones (130) are adapted so that the inner light cone region (144, 142) of the first light cone (140) and the inner light cone region (154, 152) of the second light cone (150) do not intersect.

6. Extractor hood (100) according to claim 5, wherein the inner light cone region represents a particularly bright light cone region (144, 154) that includes 80% of the luminous flux of the entire light cone (140, 150).

7. Extractor hood according to claim 5 or 6, wherein the inner light cone region represents a bright light cone region (142, 152) that includes 98% of the luminous flux of the entire light cone (140, 150).

8. Extractor hood (100) according to one of the preceding claims, wherein the illuminating unit for generating at least two light cones (130) are adapted so that the opening angle of the first light cone (140) is less than 90°.

9. Extractor hood (100) according to one of the preceding claims, wherein the illuminating unit for generating at least two light cones (130) are adapted so that the opening angle of the second light cone (150) is less than 120°.

10. Extractor hood (100) according to one of the preceding claims, wherein the illuminating unit for generating at least two light cones (130) are adapted so that the ratio of the luminous flux of the first light cone (140) to the luminous flux of the second light cone (150) is between 7:3 and 9:1.

11. Extractor hood (100) according to one of the preceding claims, wherein the illuminating unit for generating at least two light cones (130) are adapted so that the angle of inclination of the first light cone (140) from the vertical axis in the positive y-direction is between -35° and 35°.

12. Extractor hood (100) according to one of the preceding claims, wherein the illuminating unit for generating at least two light cones (130) are adapted so that the angle of inclination of the second light cone (150) from the vertical axis in the positive y-direction is between -80° and 0°.

13. Kitchen section (200) comprising an extractor hood (100), a hob (220) and a kitchen back wall (210) and / or kitchen side wall (230), characterised in that the extractor hood is an extractor hood (100) in accordance with one of claims 1 to 12.

14. Kitchen section according to claim 13, wherein the hob (220) is arranged below the extractor hood (100) and the illuminating unit for generating at least two light cones (130) of the extractor hood (100) are adapted so that the first of the at least two light cones (140) is oriented towards the hob (220) and the second of the at least two light cones (150) is oriented towards at least one of the kitchen back wall (210) and / or kitchen side wall (230) in the distance between the extractor hood (100) and the hob (220) that is arranged below the extractor hood.

15. Kitchen section (200) according to one of claims 13 or 14, wherein the generated light cones (140, 150) have an inner light cone region (144, 142, 154, 152), wherein the inner light cone region of the first light cone (144, 142) and the inner light cone region of the second of the at least two light cones (154, 152) do not intersect on the irradiated kitchen back wall (210) and / or kitchen side wall (230).

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