DE102018213978B4 - Household appliance with a projection device and method for assembling a household appliance - Google Patents

Abstract

Household appliance, having a projection device which is set up to project an image onto a projection surface (28), the projection device being designed as a slide projector (61) integrated into the household appliance, characterized in that the slide projector (61) has a light source (68 ), a collimation lens (65) following the light source (68), which converts the light generated by the light source (68) into a parallel beam of light, a slide (66) following the collimation lens (65) through which the beam of light can pass, and a projection lens (67) following the slide (66) for generating a projection beam from the beam that has passed through the slide (66), the beam being assigned a projection axis (71) aligned parallel to the beam, the projection surface (28) with respect to the projection axis (71) is misaligned and the slide (66) be is aligned tilted in addition to the projection axis (71).

Description

The invention relates to a household appliance, in particular a household appliance with a door leaf which comprises a recessed grip.

The DE 10 2010 002 171 A1 discloses a household refrigeration appliance comprising a projection device which projects an image onto a projection surface. The projection surface is, for example, part of a shelf of the household refrigerator.

The WO 2004/057636 A1 discloses a household appliance with a door leaf which comprises an operating display. The status display is set up to project a signal light onto the floor in front of the household appliance.

The DE 20 2007 008 843 U1 discloses a refrigerator and / or freezer comprising a projection device which is set up to project information onto a projection surface of the refrigerator and / or freezer.

The post-published DE 10 2017 004 136 A1 discloses a household appliance comprising a door leaf with a recessed grip. A projection device designed as a slide projector is integrated in the recessed grip and projects an image into the recessed grip.

The WO 2011/107242 A1 discloses a household appliance in which a projection device is integrated. The projection device comprises a light source, a first optical lens following the light source, a digital information display mask following the first lens, for example in the form of a digital LCD, and a second optical lens following the LCD.

The object of the present invention is to specify an alternative household appliance with a projection device.

The object of the invention is achieved by a household appliance, having a slide projector integrated into the household appliance, which is set up to project an image onto a projection surface, the slide projector being a light source, a collimation lens following the light source, which integrates the light generated by the light source into converts a parallel beam of light, a slide following the collimation lens through which the beam can pass, and a projection lens following the slide for generating a projection beam from the beam that has passed through the slide, the beam being assigned a projection axis aligned parallel to the beam Projection surface is aligned obliquely with respect to the projection axis, and the slide is aligned tilted with respect to the projection axis.

The household appliance according to the invention accordingly comprises the projection device designed as a slide projector, which is able to project an image onto the projection surface when the household appliance is in operation. The household appliance preferably comprises the projection surface. The projection surface is preferably flat. The term “image” is to be interpreted broadly and includes in particular letters, characters and symbols. The image projected onto the projection surface is in particular a plurality of display fields projected onto the projection surface, which in turn can each include a character, a letter or a symbol.

The household appliance according to the invention is, for example, a household refrigerator, a dishwasher, a washing machine or an oven. The household appliance can comprise an electronic control device which is connected to the slide projector so that it can control the slide projector.

The household appliance according to the invention can comprise an interior, a door leaf provided for opening and closing the interior, which has an inside facing the interior and an outside facing away from the interior, and a recessed grip arranged in the outside of the door leaf. The recessed grip comprises a handle which forms an undercut with respect to the outside of the door leaf. The slide projector is preferably arranged at least partially in the handle, in particular integrated into it.

If the household appliance according to the invention is a household refrigerator, then this comprises in particular a heat-insulated body with an inner container which delimits the interior space. The interior space is then a coolable interior space, which can be closed by means of the door leaf and can be cooled by means of a cooling device for cooling the coolable interior space. The household appliance according to the invention embodied as a household refrigeration appliance comprises in particular an electronic control device which is set up to control the refrigeration device in such a way that the coolable interior has at least approximately a target temperature. The slide projector can be connected to the electronic control device so that it can control the slide projector.

The household refrigerator according to the invention can be, for example, a household refrigerator. In this case, the coolable interior is cooled to temperatures greater than 0 ° C. The household refrigerator according to the invention can also be a household freezer. In this case, the coolable interior cooled to temperatures below 0 ° C. The household refrigerator according to the invention can also be a freezer-refrigerator combination. The household refrigeration device according to the invention can have exactly one coolable interior space, but also several coolable interior spaces, which can also be closed and opened by means of a door leaf in each case.

The slide projector is preferably arranged or integrated at least partially in the handle which forms the undercut. The recessed grip comprises in particular a recess which the grip only partially overlaps and which comprises an outwardly directed surface. This surface is preferably flat. This surface preferably forms the projection surface, so that the slide projector is able to project its image onto the preferably flat surface of the recess. The slide projector thus projects its image, in particular the display fields, into the recessed grip. Due to the arrangement or integration of the slide projector at least partially in the handle, it can be arranged relatively close to this special projection surface.

The recess in the door leaf preferably comprises a cover, which is designed in particular as an insert. In particular, the outwardly directed surface of the cover forms the projection surface. The outwardly facing surface of the cover is preferably flat. Because of the cover, different projection surfaces can be provided in a relatively simple manner.

Since the image is only projected into the recessed grip when the slide projector is switched on, this image is invisible to an operator when the slide projector is switched off. As a result, a display device can be created which is invisible to the operator when it is switched off.

If the cover is used for the recess, then an additional display device can be created which can be combined with different materials.

Due to the possibly integrated design in the handle, the slide projector is also invisible to an operator.

By means of the projected image, in particular operating states of the household appliance, such as a temperature of the coolable interior in the case of the household refrigerator, or also special functions are displayed.

The slide projector of the household appliance according to the invention preferably comprises a housing within which at least the components of the slide projector that are essential for generating a projection of the image onto the projection surface are attached to the housing. The housing preferably forms the part of the handle that forms the undercut. The slide projector can thus be mounted in the household appliance in a relatively simple manner. This allows the slide projector to be combined to form a module or assembly.

In the area of the handle, the door leaf can comprise a pocket which is designed in particular as a backing part and in which the slide projector is fastened with its housing.

The household appliance according to the invention can thus be assembled by sliding the fully assembled slide projector with its housing into the pocket and fastening the cover in the recessed grip to cover the recess, the outward-facing surface of the cover forming the projection surface for the slide projector . The slide projector can e.g. be fixed in the pocket by means of a latch.

The side of the housing of the slide projector facing the outside of the door leaf can comprise an opening. At least the components of the slide projector that are essential for generating a projection can be guided through this opening into the housing for assembly. The opening of the housing is preferably closed with a housing cover.

The housing comprises in particular a first housing area forming the undercut and a second housing area which follows the first housing area and is arranged within the door leaf. The second housing area preferably has a greater depth than the first housing area. The first housing area is in particular assigned to the handle or even forms it.

The slide projector comprises the light source, e.g. an LED, the collimation lens following the light source, which converts the light generated by the light source into a parallel beam of light, the slide following the collimation lens through which the beam of light can pass, and the projection lens following the slide for generating of the projection beam from the beam that has passed through the slide. The projection beam is provided to hit the projection surface in order to project the image of the slide onto the projection surface. The collimation lens bundles the light from the light source and directs it onto the projection lens. This structure ensures a relatively high depth of field of the slide projector at relatively low manufacturing costs. The parallel bundle of rays or the projection beam is assigned a projection axis which is aligned parallel to the parallel beam. A projection axis is assigned to the parallel bundle of rays.

The light source, the slide and the collimation lens are preferably arranged within the second housing area, that is to say in the partial area of the housing arranged within the door leaf. The projection lens is preferably arranged within the first housing area, that is to say in that sub-area which is assigned to the undercut or the handle. As a result, this embodiment of a slide projector can be arranged at least partially in the handle in a relatively space-saving manner.

The slide projector can comprise a deflection mirror following the projection lens, which deflects the projection beam in the direction of the projection surface. The deflection game is preferably also attached to the housing in the first housing area.

The distances between the collimation lens, the slide and the projection lens are preferably selected such that the collimation lens and the slide are in the broad part of the module, i.e. in the second housing area of the housing, and thus not within the relatively narrow grip. This can offer the advantage that the image to be projected can be larger and thus errors and ambiguities in it are not so greatly enlarged. For example, if the slide can be printed larger, then the print resolution or the quality of the slide can be relatively low. In this case, the image of the slide is enlarged to a lesser extent, as a result of which, for example, errors depicted in the image of the slide are enlarged less.

The light source, the collimation lens, the slide and the projection lens are preferably arranged within the housing in such a way that the projection axis of the parallel beam, starting from the collimation lens, has a directional component in the direction of the outside of the door leaf.

The projection surface is aligned obliquely with respect to the projection axis of the parallel beam, i.e. the projection surface is preferably neither perpendicular nor parallel with respect to the projection axis of the parallel beam. The projection surface preferably forms an angle of 5 ° to 45 ° with the projection axis.

In particular, it can be provided that the outwardly directed surface of the cover of the recess as a projection surface is aligned obliquely with respect to the projection axis of the parallel beam.

The slide is aligned tilted with respect to the projection axis. The slide is therefore not aligned at right angles with respect to the projection axis, but rather forms an angle of preferably 5 ° to 88 ° with it.

This makes it possible to compensate for the resulting distortion of the projected image in the case of a projection surface that is not aligned at right angles to the projection axis or, when using the deflecting mirror, is not aligned parallel to it. This compensation is at least partially achieved by the tilted or inclined alignment of the slide with respect to the beam or the projection axis in order to increase the focus area again and thus enable the projection onto the inclined projection surface.

In order to at least partially compensate for the distortion of the projected image caused by the projection onto an inclined projection surface, the image of the slide to be projected is preferably pre-distorted so that the slide projector projects an image that is as undistorted as possible onto the projection surface.

According to one embodiment of the household appliance according to the invention, the slide projector comprises several side-by-side sub-slide projectors, each comprising a collimation lens, a slide following the corresponding collimation lens, and a projection lens following the corresponding slide. The projected image preferably comprises a plurality of display fields, and the partial slide projectors each project one of the display fields onto the projection surface.

Depending on the embodiment of the household appliance according to the invention, it can be mounted in different ways. For example, if the slide projector comprises the housing, is thus combined in particular to form the module, and is at least partially arranged in the handle of the door leaf, then the module itself can be mounted in a backing part in the door leaf. This backing part can be integrated into the handle, for example, or as a separate part on the handle, on the outside of the door leaf, which is designed in particular as a door panel, or on the inside.

The slide projector designed as a module is then pushed into this backing part, for example, and latched if necessary. The cover for the recess is then inserted into the handle contour and thus forms a relatively clean transition to the module and in particular covers one any gap created during assembly between the module and the backing part. This cover can be made of various materials, such as wood, ceramic, glass or metal.

The slide projector can be activated, for example, by a proximity sensor on the household appliance, by opening the door leaf or by means of an app on a smart device. Continuous operation for the permanent display of symbols is also possible. It is also conceivable to let only one display light up as a standby function in order to save energy. After pressing this symbol, all symbols can then be displayed.

The structure of the slide projector can preferably be optimized with regard to injection molding technology and with regard to simple assembly while maintaining relatively low tolerances. The individual parts are preferably placed in the housing, which is made in particular of plastic. Structural contours are preferably provided on all components to ensure that they are installed correctly (poka-yoke). The housing cover, which is attached after the assembly of the internal components, fixes all components in their position.

• 1 ein Haushaltskältegerät mit zwei nebeneinander angeordneten Türblättern, die jeweils eine Griffmulde umfassen,
• 2 eine Frontansicht eines der Türblätter,
• 3 eine Seitenansicht dieses Türblatts,
• 4 das Türblatt in einer perspektivischen und teilweise geschnittenen Darstellung,
• 5 in einer perspektivischen und teilweise geschnittener Darstellung einen Teilbereich der Griffmulde, die einen Diaprojektor aufweist,
• 6 in einer perspektivischen Darstellung und geschnittenen Darstellung den Diaprojektor,
• 7 eine Seitenansicht des Diaprojektors in geschnittener Darstellung,
• 8 eine Draufsicht des Diaprojektors,
• 9 eine Draufsicht eines Teils des Diaprojektors,
• 10 ein Gehäuse des Diaprojektors in einer perspektivischen Darstellung,
• 11 einen Ausschnitt des Gehäuses,
• 12 einen Gehäusedeckel,
• 13 Einen Ausschnitt des Gehäusedeckels,
• 14, 15 Linsen und Diarahmen des Diaprojektors, und
• 16 eine Seitenansicht des Diaprojektors als Prinzipschaubild.

An exemplary embodiment of the invention is shown by way of example in the accompanying schematic drawings. Show it:

• 1 a household refrigerator with two door leaves arranged side by side, each of which has a recessed grip,
• 2 a front view of one of the door leaves,
• 3 a side view of this door leaf,
• 4th the door leaf in a perspective and partially cut representation,
• 5 in a perspective and partially sectioned illustration a portion of the recessed grip, which has a slide projector,
• 6th the slide projector in a perspective view and a sectioned view,
• 7th a side view of the slide projector in a cut representation,
• 8th a top view of the slide projector,
• 9 a top view of part of the slide projector,
• 10 a housing of the slide projector in a perspective view,
• 11 a section of the housing,
• 12th a housing cover,
• 13th A section of the housing cover,
• 14th , 15th Lenses and slide frames of the slide projector, and
• 16 a side view of the slide projector as a schematic diagram.

The 1 shows a front view of a household refrigerator 1 as an example of a household appliance.

The household refrigerator 1 has a heat-insulated body 2 with an inner container 2 on, the one for storing food provided coolable interior 4th limited. Inside the coolable interior 4th are for example shelves 5 arranged for storing the food.

That in the 1 Household refrigeration device shown 1 in particular includes two relative to the body 2 pivoting door leaves 20th , 20a each with a recessed grip 23 include. The door leaves 20th , 20a are provided, the coolable interior 4th to be closed and made accessible when open. In the case of the present exemplary embodiment, the left door leaf is 20a open and the right door leaf 20th shown closed. The right door leaf 20th is in the 2 as a front view in which 3 as a side view and in the 4th shown in a perspective and partially sectioned illustration.

In the case of the present exemplary embodiment, the household refrigerator comprises 1 an interior designed as a freezer compartment, which is below the one with the door leaves 20th , 20a lockable coolable interior 4th is arranged and by means of a drawer which can be pulled out of the freezer compartment 6th is provided.

In the case of the present exemplary embodiment, the household refrigerator comprises 1 a refrigeration device 7th in particular in the form of a refrigerant circuit and one for controlling the refrigeration device 7th provided electronic control device 8th . This is set up in particular, the refrigeration device 7th to be controlled in a manner known to those skilled in the art in such a way that the coolable interior 4th and the freezer compartment have at least approximately predefined or predefinable target temperatures. The electronic control device 7th is preferably set up in such a way that it determines the temperatures of the coolable interior 4th and regulates the freezer compartment, as is known in principle to the person skilled in the art. If necessary, the actual temperatures of the coolable interior 4th and the freezer compartment can be obtained by the household refrigerator 1 not shown and with the electronic control device 8th Have connected temperature sensors. In particular, the household refrigerator is in operation 1 the set temperature of the freezer compartment less than 0 ° C and the target temperature of the coolable interior 4th greater than 0 ° C.

The door leaves 20th , 20a each include a coolable interior 4th facing inside 21st , one of the coolable interior 4th facing away from the outside 22nd , and those in the respective outside 22nd the door leaves 20th , 20a arranged recessed grip 23 . The 5 shows a partial area of the recessed grip in a perspective and partially sectioned illustration 23 .

The recessed grip 23 includes a handle 24 which has an undercut with respect to the outside 22nd of the door leaf 20th forms.

The recessed grip 23 includes in particular a depression 25th which only partially through the handle forming the undercut 24 is covered. In the case of the present exemplary embodiment, the recess comprises 25th a cover designed as an insert 26th having an outward-facing, flat surface 27 having.

In the case of the present exemplary embodiment, the household refrigerator comprises 1 one as a slide projector 61 Executed projection device that is used in the operation of the household refrigerator 1 an image on a projection surface 28 able to project. In the case of the present exemplary embodiment, the outwardly directed flat surface forms 27 the cover 26th the deepening 25th this projection surface 28 . The slide projector 61 is in particular at least partially in the handle 24 integrated. The 6th shows the slide projector in a perspective and sectioned illustration 61 , the 7th shows a side view of the slide projector 61 in cut representation and the 8th shows a top view of the slide projector 61 . The 9 shows a section of the slide projector 61 as a top view.

In the case of the present exemplary embodiment, the projected image is several on the projection surface 28 projected display fields 29 which in turn can each comprise a character, a letter or a symbol.

The slide projector 61 can with the electronic control device 8th be connected so that the slide projector 61 able to drive. That on the projection surface 28 projected image in the form of the display panels 29 can, for example, operating states, such as the temperature of the coolable interior 4th be assigned

The slide projector 61 comprises in the case of the present exemplary embodiment a housing 62 , within which at least the one for generating a projection of the image onto the projection surface 28 essential components of the slide projector 61 on the housing 62 are attached. The case 62 of the slide projector 61 is in a perspective view in FIG 10 shown. The 11 shows a section of the housing 62 .

The case 62 of the slide projector 61 can comprise an opening through which at least the components of the slide projector that are essential for generating a projection 61 in the housing 62 for assembly. The opening of the case 62 is preferably with one in The 12th shown 62a locked. The case 62 and the housing cover 62a are in particular made of plastic. The 13th shows a section of the housing cover 62a .

The door leaf 20th includes in particular in the area of the handle 24 a pocket 30th , which is designed in particular as a backing part and in which the slide projector 61 with its case 62 is attached.

The household refrigerator 1 can thus be assembled by using the fully assembled slide projector 61 with its case 62 in the pocket 30th is pushed, and the cover 26th in the recessed grip 23 attached to the recess 25th to cover. The slide projector 61 can, for example, be locked in place in the pocket 30th be fixed.

In the case of the present exemplary embodiment, the housing comprises 62 of the slide projector 61 one to the undercut of the handle 24 associated, in particular the undercut forming the first housing area 63 and one of the first housing area 63 subsequent, within the door leaf 20th arranged second housing area 64 . The second housing area 64 in particular has a greater depth than the first housing area 63 on.

In the case of the present exemplary embodiment, the slide projector comprises 61 several slide projectors arranged side by side 91 . The partial slide projectors 91 in particular each comprise a collimation lens 65 , one of the corresponding collimating lens 65 following slide 66 , and one of the corresponding slide 66 subsequent projection lens 67 . The individual partial slide projectors 91 project one of the display fields at a time 29 onto the projection surface 28 . The collimation lenses 65 who have favourited Slides 66 or their slide frames 66a , and the projection lenses 67 are in perspective views in 14th and 15th shown.

In the case of the present embodiment, the collimating lenses are arranged side by side 65 into a single component 92 summarized. Also the projection lenses arranged side by side 67 are a single component 94 summarized, and the slide frames 66a the Slides 66 are also a single component 93 summarized. These components 92-94 are in particular made of plastic and were preferably manufactured by injection molding.

The slide projector 61 includes a light source 68 who have the collimating lenses 65 follow. The light source 68 in particular comprises several LEDs 69 which, for example, on a circuit board 70 are attached. In particular, each of the partial slide projectors 91 one of the LEDs 69 assigned, ie each of the sub-projectors 91 includes an LED 69 .

The collimation lens 61 convert that from the light source 68 or the individual LEDs 69 generated light into parallel bundles of light rays that pass through the slides 66 pass through to turn off the projection lenses 67 are converted into projection beams, each of which contains information about the display surfaces to be projected 29 include.

The beam bundles or the projection rays are corresponding projection axes 71 assigned.

In the case of the present exemplary embodiment, the light sources are 68 or the LEDs 69 who have favourited Slides 66 and the collimating lenses 65 within the second housing area 64 arranged, so in the one inside the door leaf 20th arranged portion of the housing 62 of the slide projector 61 . The projection lenses 67 are within the first housing area 63 arranged, that is, in the sub-area that the undercut or the handle 24 assigned.

In the case of the present exemplary embodiment, the slide projector comprises 61 one of the projection lenses 67 subsequent deflection mirror 72 , which the projection beam in the direction of the projection surface 28 diverts. The Umlenkspielegel 72 is also in the first housing area 63 of the housing 62 attached.

The case 62 includes molded windows 73 through which the deflector mirror 72 deflected projection beam 71 out of the case 62 passes through.

In the case of the present exemplary embodiment, the cover is 26th and thus the projection surface 28 or that of the projection surface 28 assigned plane with respect to the parallel beam or its projection axis 71 misaligned. The projection surface 28 or its assigned plane closes with the parallel bundle of rays or the projection axis 71 preferably an angle of 5 ° to 45 °.

In the case of the present exemplary embodiment, the housing comprises 62 of the slide projector 61 rest-free tours 95 , 96 , 97 into which the components that are grouped together 92 , 93 , 94 the collimation lenses 65 , Slide frames 66a and projection lenses 67 for attachment to the housing 62 are inserted without locking.

Furthermore, the housing cover is 62a designed in such a way that it is a single component 92 , 93 , 94 collimated lenses 65 , Slide frames 66a and projection lenses 67 in the guides 95 , 96 , 97 pushes, causing the components 92 , 93 , 94 in the housing 62 are fixed. To the components 92 , 93 , 94 in the guides 95 , 96 , 97 to press, which can be the interior of the case 62 facing surface 80 of the housing cover 62a molded ribs 81 as a hold-down include.

In the case of the present exemplary embodiment, this includes the interior of the housing 62 facing surface 80 of the housing cover 62a contoured ribs 82 , and the component 92 combined collimation lenses 65 that go to the component 93 combined slide frames 66a and the component 94 combined projection lenses 67 one contour each 98 , in particular a V-shaped contour with which the contoured ribs 82 able to interact positively to the components 92-94 combined collimation lenses 65 , Slide frames 66a and projection lenses 67 inside the case 62 to fix.

The ends 99 , 99a the one to the collimating lenses 65 , Slide frames 66a and projection lenses 67 summarized components 92-94 preferably include different contours to ensure that they are installed correctly (poka-yoke).

In the case of the present exemplary embodiment, the light sources are 68 who have favourited Collimating Lenses 65 who have favourited Slides 66 and the projection lenses 67 such within the housing 62 arranged that the beam or the projection axis 71 starting from the collimating lenses 65 a directional component towards the outside 22nd of the door leaf 20th having.

The projection surface is preferably 28 with respect to the projection axis 71 is misaligned. Thus, in the case of the present embodiment, is the outwardly facing surface 27 the cover 26th with respect to the projection axis 71 of the parallel bundle of rays is misaligned. The projection surface 28 closes for example with the projection axis 71 an angle α from 5 ° to 45 °. This is in the 16 illustrated.

The slide 66 is preferably with respect to the beam or the projection axis 71 tilted aligned. The slide 66 closes with the projection axis 71 for example an angle β from 5 ° to 88 °. This makes it possible to use the inclined projection surface 28 to compensate for the resulting distortion of the projected image. This compensation is at least partially due to the tilted or inclined alignment of the slides 66 with respect to the projection axis 72 achieved in order to enlarge the focus area again and thus enable the projection onto the inclined projection surface.

About the distortion of the projected image caused by projection onto an inclined projection surface 28 arises, at least partially to compensate, the image to be projected is preferably the slide 66 pre-distorted so that the slide projector 61 an image on the projection surface that is as undistorted as possible 28 projected.

In the case of the present embodiment, it is inside the housing 62 of the slide projector 61 a sensor device 74 on the housing 62 attached so that the slide projector 61 , the sensor device 74 and the projection surface 28 a manual input device of the household refrigerator 1 form, with the particular operating parameters of the household refrigerator 1 such as its target temperature can be entered. In this case the display fields correspond 29 Input fields that the slide projector 61 onto the projection surface 28 projected.

The sensor device, 74 associated with the electronic control device 8th is connected, is set up, an approach of an object, for example a finger of an operator or a touch of the object on the projection surface 28 to recognize projected input fields in order to recognize an input assigned to the corresponding input field in the input device.

The sensor device 74 comprises in particular several proximity sensors arranged next to one another 75 , in particular infrared proximity sensors, in particular on a circuit board 78 are attached. In particular, each is one of the proximity sensors 75 each one of the partial slide projectors 91 assigned. The ones from the proximity sensors 75 In the case of the present exemplary embodiment, signals transmitted can be transmitted through additional molded windows 77 of the housing 62 step through.

List of reference symbols

1

Household refrigerator

2

heat-insulated body

4th

coolable interior

5

Shelves

6th

drawer

7th

Refrigeration device

8th

electronic control device

20th

Door leaf

20a

Door leaf

21

inside

22nd

Outside

23

Recessed grip

24

Handle

25th

deepening

26th

cover

27

flat surface

28

Projection surface

29

Display fields

30th

bag

61

Slide projector

62

casing

62a

Housing cover

63

first housing area

64

second housing area

65

Collimation lens

66

Slide

66a

Slide frame

67

Projection lens

68

Light source

69

LEDs

70

Circuit board

71

Projection axis

72

Deflection mirror

73

window

74

Sensor device

75

Proximity sensors

77

further windows

78

Circuit board

80

surface

81

Ribs

82

contoured ribs

91

Partial slide projector

92-94

Components

95-97

guides

98

contour

99, 99a

end up

α, β

angle

Claims (12)

Household appliance, having a projection device which is set up to project an image onto a projection surface (28), the projection device being designed as a slide projector (61) integrated into the household appliance, characterized in that the slide projector (61) has a light source (68 ), a collimation lens (65) following the light source (68), which converts the light generated by the light source (68) into a parallel beam of light, a slide (66) following the collimation lens (65) through which the beam of light can pass, and a projection lens (67) following the slide (66) for generating a projection beam from the beam that has passed through the slide (66), the beam being assigned a projection axis (71) aligned parallel to the beam, the projection surface (28) with respect to the projection axis (71) is misaligned and the slide (66) b e with respect to the projection axis (71) is aligned tilted. Household appliance after Claim 1 , characterized in that the slide projector (61) comprises a housing (62) within which at least the components of the slide projector (61) essential for generating a projection of the image onto the projection surface (28) are attached to the housing (62). Household appliance after Claim 1 or 2 , characterized by an interior space (4), a door leaf (20) provided for opening and closing the interior space (4), which has an inside (21) facing the interior (4) and an outside (22) facing away from the interior (4) and a recessed grip (23) which is arranged in the outside (22) of the door leaf (20) and which comprises a handle (24) which forms an undercut with respect to the outside (22) of the door leaf (20), and the slide projector (61) is arranged at least partially in the handle (24). Household appliance after Claim 2 and 3 , characterized in that - the door leaf (20) in the area of the handle (24) comprises a pocket (30) in which the slide projector (61) is fastened with its housing (62), and / or - the housing (62) comprises an opening which is closed with a housing cover (62a). Household appliance after Claim 3 or 4th characterized in that the housing (62) comprises a first housing area (63) forming the undercut and a second housing area (64) arranged within the door leaf (20) following the first housing area (63). Household appliance after Claim 5 , characterized in that the light source (68), the slide (66) and the collimation lens (65) are arranged within the second housing area (64), and the projection lens (67) is arranged within the first housing area (63). Household appliance according to one of the Claims 3 to 6th , characterized in that the recessed grip (23) has a recess (25) which the handle (24) only partially overlaps and which comprises an outwardly directed surface. Household appliance after Claim 7 , characterized in that the outwardly directed surface forms the projection surface (28) or that the recess (25) comprises a cover (26), the outwardly directed surface (27) of which forms the projection surface (28). Household appliance according to one of the Claims 3 to 8th characterized in that the light source (68), the collimation lens (65), the slide (66) and the projection lens (67) are arranged within the housing (62) in such a way that a projection axis assigned to the bundle of rays starting from the collimation lens (65) has a directional component in the direction of the outside (22) of the door leaf. Household appliance according to one of the Claims 1 to 9 , characterized in that the slide projector (61) comprises a deflection mirror (72) which follows the projection lens (67) and which deflects the direction of the projection beam in the direction of the projection surface (28). Household appliance according to one of the Claims 1 to 10 , characterized in that the slide projector (61) comprises several side-by-side sub-slide projectors (91) each having a collimation lens (65), a slide (66) following the corresponding collimation lens (65), and a slide (66) following the corresponding slide (66) Projection lens (67) comprises, the projected image comprises a plurality of display fields (29), and the Partial slide projectors (91) each project one of the display fields (29) onto the projection surface (28). Method for assembling a household appliance according to one of the Claims 1 to 11 which has an interior space (4), a door leaf (20) provided for opening and closing the interior space (4), which has an inside (21) facing the interior (4) and an outside (22) facing away from the interior (4), and a recessed grip (23) which is arranged on the outside (22) of the door leaf (20) and comprises a handle (23) which forms an undercut with respect to the outside (22) of the door leaf (20), the door leaf (20) in the area of the handle (20) comprises a pocket (30), and the recessed grip (23) has a recess (25) which the handle (23) only partially overlaps, and the household appliance has a projection device which is set up to display an image on a To project the projection surface (28), the projection device being designed as a slide projector (61), the slide projector (61) comprising a housing (62) within which at least the components essential for generating a projection of the image onto the projection surface (28) of the slide projector s (61) are attached to the housing (62), comprising the following steps for mounting the household appliance: - pushing the slide projector (61) with its housing (62) into the pocket (30), and - attaching a cover (26) in the Recessed grip (23) to cover the recess (25), the outwardly directed surface (27) of the cover (26) forming the projection surface (28).

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