CN111247382A

CN111247382A - Domestic refrigeration appliance

Info

Publication number: CN111247382A
Application number: CN201880068718.0A
Authority: CN
Inventors: M·艾歇尔; A·韦伯; M·鲍尔; M·拉尔姆
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2017-10-24
Filing date: 2018-10-04
Publication date: 2020-06-05
Also published as: DE102017218954A1; WO2019081173A1

Abstract

The invention relates to a domestic refrigerator (1) having a coolable interior (4) provided for storing food, a refrigerating device (5) for cooling the coolable interior (4), and a heat-insulating wall (20) comprising an inner skin (21) facing the coolable interior (4), an outer skin (22) facing away from the coolable interior (4), and a heat insulator (23) arranged between the inner skin (21) and the outer skin (22). A domestic refrigeration device (1) comprises a planar lighting device (30) comprising a transparent planar light conductor (31) having a first side (32) and a second side (33) opposite the first side (32) and provided with a light-reflecting coating (34), and at least one illuminant (35) which couples its light laterally into the planar light conductor (31), so that the light-reflecting coating (34) can at least partially reflect the light coupled into the planar light conductor (31) and at least partially couple the light coupled into the planar light conductor (31) out of the first side (32) of the planar light conductor (31). The second surface (33) of the planar light conductor (31) is attached to a side (24) of the outer skin (22) or inner skin (21) facing away from the thermal insulation (23). The planar light guide (31) is dimensioned in such a way that it covers at least a large part, preferably substantially completely, a side (24) of the outer skin (22) or the inner skin (21) facing away from the heat insulation (23).

Description

Domestic refrigeration appliance

Technical Field

The invention relates to a domestic refrigeration device having a lighting device.

Background

Household refrigeration appliances generally comprise: an insulated body having an inner container defining a boundary of a coolable inner chamber configured for holding food; a refrigeration device for cooling the coolable interior chamber; and an insulating door leaf which closes the coolable interior chamber in the closed state and makes the coolable interior chamber accessible in the open state. The domestic refrigeration appliance may also comprise a lighting device, for example in the form of an interior lighting device.

Disclosure of Invention

The object of the present invention is to provide an improved domestic refrigerator having a lighting device.

The object of the invention is achieved by a domestic refrigerator having a coolable interior provided for storing foodstuffs, a refrigerating device for cooling the coolable interior, a heat-insulating wall and a planar lighting device, the heat-insulating wall comprising an inner skin facing the coolable interior, an outer skin facing away from the coolable interior and a heat insulator arranged between the inner skin and the outer skin, the planar lighting device comprising a transparent planar light conductor having a first side and a second side opposite the first side and provided with a light-reflecting coating, and at least one luminous body which projects its light laterally into the planar light conductor, so that the light-reflecting coating can at least partially reflect the light incident into the planar light conductor and at least partially couple the light incident into the planar light conductor (31) out of the first side of the planar light conductor, the planar light conductor is fastened with its second surface to the side of the outer or inner skin facing away from the thermal insulation, and is dimensioned such that it covers the side of the outer or inner skin facing away from the thermal insulation at least for the most part, preferably substantially completely.

The domestic refrigeration appliance according to the invention comprises in particular: an insulated body having an inner container defining a boundary of a coolable inner chamber configured for holding food; and a door leaf which is arranged so as to be pivotable relative to the body and is provided for opening and closing the coolable interior. The insulating body comprises in particular also an outer skin and an insulation arranged between the inner container and the outer skin, preferably configured as an insulating foam. The insulating wall to which the planar light conductor is fixed, preferably by means of adhesive tape, is for example part of an insulating body. In this case, the inner container is the endothelium. The insulating wall to which the planar light conductor is fastened is, for example, a side wall of the insulating body, wherein the planar light conductor is preferably fastened to the outer skin so that the side of the side wall of the insulating body pointing outwards can be illuminated. Preferably, the heat-insulating wall is a heat-insulating door leaf, wherein the planar light conductor is preferably fastened to an outer skin of the heat-insulating door leaf, so that the side of the door leaf pointing outwards can be illuminated.

The planar lighting device is therefore preferably a planar exterior lighting device, in particular a planar front lighting device of a domestic refrigerator or a headlight, which is in particular designed to be switched on and off. Thus, preferably the entire front side, i.e. the outer side of the door leaf, is illuminated.

The planar lighting device comprises a transparent planar light guide. The transparent planar light conductor is based in particular on a transparent material, for example PMMA (polymethyl methacrylate) or polycarbonate, which is provided on its second or rear side with a light-reflecting coating or light-reflecting layer.

The planar light conductor is fastened with its second surface to the side of the outer or inner skin facing away from the thermal insulation, and is dimensioned such that it covers the side of the outer or inner skin facing away from the thermal insulation at least to a large extent, preferably substantially completely. In the case of a planar exterior lighting device, the entire outer side of the door leaf can thus be illuminated, for example.

The light-reflecting coating can be configured, for example, as a light-reflecting lacquer layer, a printed layer. Preferably, the light-reflective coating is a light-reflective film, in particular a metal foil. The film or the metal foil can be structured and/or provided with a pattern on its side facing the planar light guide.

Preferably, the light-reflecting coating or light-reflecting layer comprises or consists of a real material/real metal or a corresponding printed layer or film. The light-reflecting coating or light-reflecting layer is directly connected to the planar light conductor or to the second side thereof.

The lighting device comprises at least one light emitter. The light emitter comprises for example at least one LED, preferably a plurality of LEDs. The luminous body projects its light laterally into the planar light conductor, so that the light-reflecting coating can at least partially reflect the light projected into the planar light conductor and at least partially couple the light projected into the planar light conductor out of the first surface of the planar light conductor.

For example, in order to improve the distribution of incident light in the planar light conductor, the second surface of the planar light conductor may be structured and/or the second surface of the planar light conductor may comprise scattering particles for improving the light distribution inside the planar light conductor and/or for coupling light out of the planar light conductor. The structuring may also comprise at least one symbol and/or at least one letter. The structuring can be printed, laser-engraved or etched. Furthermore, the coupling out of light can be achieved or at least improved by introducing scattering particles. The cut edge of the planar light guide can also emit light uniformly here, since light is usually not completely coupled out of the first surface. Furthermore, it is possible to laser-engrave information, text or a logo into the material of the planar light guide and thereby also to make it glow.

The light of the luminous body is thus injected and, if necessary, reproduced in a preferably planar manner by structuring in the planar light guide.

The domestic refrigerator according to the invention comprises a coolable interior which is cooled by a refrigerating device. The refrigerating device is preferably designed as a coolant circuit known in principle to the person skilled in the art and is preferably designed such that it cools the coolable interior to at least approximately a predetermined temperature. The coolable inner chamber is configured to store food items.

The domestic refrigeration appliance according to the invention can be, for example, a domestic refrigeration appliance. In this case, the coolable inner chamber is cooled to a temperature of more than 0 ℃. However, the domestic refrigerator according to the invention can also be a freezer or a combined freezer and refrigerator appliance. The domestic refrigerator according to the invention can have exactly one coolable interior space, but also a plurality of coolable interior spaces which can be closed and opened in each case by an insulating door leaf.

The heat-insulating door leaf can comprise two side beams, in particular made of plastic, to which the inner and outer skin of the door leaf are fastened. At least one of the side members may include a grip groove. The light can be fixed to one of the side beams and preferably extends over the entire length of the side edge of the transparent light guide facing this side beam. That is to say, the luminous bodies in this case inject their light into this side edge of the planar light guide.

In order to mask the lateral incidence of light and the "Hot spots" formed thereby, an additional material (for example, a stainless steel plate) can be applied to the front side or first surface of the planar light guide.

The lighting device of the domestic refrigerator according to the invention can therefore comprise a light screen which partially overlaps the first surface of the planar light guide in the region of the luminous body which projects its light laterally into the planar light guide. The shading plate can be printed or formed, for example, as a sheet, in particular a stainless steel sheet.

In the case of an insulated door leaf as an insulated wall, the shading panel can at least partially overlap the side beam to which the luminous body is fixed.

Thus, the sensation of the domestic refrigeration device can be realized on the basis of a planar lighting device, in particular if it is configured as a planar external lighting device. If necessary, an operating state (for example, standby or door alarm) is also displayed. Interaction possibilities with the user (e.g. when the user is close) can also be achieved. In this case, the domestic refrigeration appliance can comprise a proximity sensor, so that the domestic refrigeration appliance is provided for automatically switching on and off the luminous body as a function of a signal of the proximity sensor.

The lighting device may be configured as a "night light" in the dark. In this case, the domestic cooling appliance can comprise a light sensor, so that the domestic cooling device is provided for automatically switching on and off the luminous body as a function of the signal of the light sensor.

It can also be provided that the light color (color temperature) or the color of the light of the luminous body is designed to be adjustable.

Drawings

An embodiment of the invention is schematically shown in the schematic drawings. In the drawings:

figure 1 shows a domestic refrigeration appliance with a door leaf in a perspective view,

figure 2 shows a part of the door leaf in a sectional view of the door leaf,

FIG. 3 shows an external lighting device of a domestic refrigeration appliance in an exploded view, an

Fig. 4 shows a planar light guide of an external lighting device.

Detailed Description

Fig. 1 shows a household refrigeration appliance 1 in a perspective view, comprising a thermally insulated body 2 with an inner container 3, which delimits the coolable inner chamber 4. The coolable inner chamber 4 is provided for storing food products, not shown.

The domestic refrigerator 1 comprises a door leaf 20, which is mounted on the body 2 so as to be pivotable, in particular with respect to a vertically extending axis. The coolable interior 4 is accessible when the door leaf 5 is open, and the coolable interior 4 is closed when the door leaf 5 is closed. Fig. 2 shows a sectional plan view of a part of the door leaf 20.

The door leaf 20 is an example of an insulating wall of the domestic refrigerator 1 and comprises an inner skin 21 facing the coolable interior 4 and an outer skin 22 facing away from the coolable interior 4. Between the inner skin 21 and the outer skin 22, which are made of sheet material for example, an insulation 23 is arranged, which is preferably designed as an insulating foam. In the case of the present embodiment, the door leaf 20 includes a side beam to which the inner skin 21 and the outer skin 22 are fixed. The side members are made of, for example, plastic. In the case of the present embodiment, at least one of the side members 26 includes a grip groove 25.

In the case of the present exemplary embodiment, a plurality of door shelves 6 for storing food are arranged on the side of the inner skin 21 of the door leaf 20 facing the coolable interior 4. In particular, a plurality of shelves 7 for storing food products are arranged in the coolable interior 4, and in particular in the lower region of the coolable interior 4 a drawer 8 is arranged in which food products can likewise be stored. Above the drawer 8, a grid 7 is arranged, which covers the upwardly directed opening of the drawer 8.

The domestic refrigeration appliance 1 comprises a refrigeration device 5, preferably in the form of a refrigerant circuit, which is known in principle to the person skilled in the art, for cooling the coolable interior 4.

In the case of the present exemplary embodiment, the domestic refrigeration device 1 comprises an electronic control device 9, which is provided to control the refrigeration device 5, in particular a compressor of a refrigerant circuit, in a manner generally known to the person skilled in the art in such a way that the coolable interior 4 has at least approximately a predefined or predefinable setpoint temperature. The electronic control unit 9 is preferably arranged such that it regulates the temperature of the coolable interior 4. In order to obtain the actual temperature of the coolable interior 4, if necessary, the domestic refrigerator 1 can have at least one temperature sensor, which is not shown in detail and is connected to the electronic control device 9.

The domestic refrigeration appliance 1 comprises a planar exterior lighting device 30 shown in fig. 3.

The external illumination device 30 comprises a transparent planar light conductor 31 shown in fig. 4, which has a first face 32 and a second face 33 opposite the first face 32. The planar light conductor 31 is made of PMMA (polymethyl methacrylate) or polycarbonate, for example.

The second side 33 is provided with a full surface light reflective coating 34. The light-reflecting coating 34 can be realized, for example, as a light-reflecting paint layer, a printed layer or a film, preferably a metal foil. The coating 34 preferably comprises a real material and is connected planarly to the second side 33 of the planar light conductor 31.

The second side 33 of the planar light conductor 31 is fastened to the side 24 of the outer skin 22 of the door leaf 20 facing away from the insulating material 23, for example by means of adhesive tape. The planar light conductor 31 is dimensioned such that it covers the side 24 of the outer skin 22 of the door leaf 20 facing away from the insulating material 23 at least for the most part, in the present exemplary embodiment essentially completely.

The external lighting device 30 comprises at least one luminous body, in the present exemplary embodiment a plurality of LEDs 35 being fastened, for example, to the circuit board 36 and being coupled to the planar light conductor 31 in such a way that they emit their light laterally, in the present exemplary embodiment into one of the side edges 37 of the planar light conductor 31. The lights or LEDs 35 extend along the entire length of the side edges 37. The incident light is at least partially reflected by the light-reflecting coating 34 and preferably coupled out from the first side 32 of the planar light conductor 31 in a uniformly distributed manner, so that the side of the door leaf 20 pointing outwards shines when the external lighting device 30 is switched on.

The LED35 and the circuit board 36 are in particular fixed in or on the side beam 26 comprising the grip recess 25.

In order to improve the most homogeneous possible reflection of light by the external illumination device 30, the second side 33 of the planar light conductor 31 is structured in the case of the present exemplary embodiment. The structuring may for example be uniform. The structuring can be printed on the second side 33 or etched or laser-engraved into the second side 33, for example. The planar light conductor 31 may also comprise scattering particles for improving the light distribution or light out-coupling. The structuring may also comprise at least one letter, such as a written description or at least one symbol, illuminated thereby.

In the case of the present embodiment, the external illumination device 30 comprises a light shield 38 which overlaps the first face 32 of the planar light conductor 31 in the region of the side edge 37 of the light-emitting diode 35 which emits its light into the planar light conductor 31. The shading plate 38 can be realized, for example, by a light-impermeable coating of the relevant region of the first side 32 of the planar light conductor 31. In the case of the present embodiment, the shade 38 is a sheet material, in particular a stainless steel sheet, which in particular partially overlaps the side beams 26 comprising the grip recesses 25.

The planar light conductor 31 may also have at least one recess, not shown, for example in the form of at least one symbol or letter.

The domestic refrigeration appliance 1 can comprise a proximity sensor, so that the domestic refrigeration appliance 1 is provided for automatically switching the LED35 on and off as a function of a signal of the proximity sensor.

The domestic refrigeration appliance 1 can comprise a light sensor, so that the domestic refrigeration appliance 1 is provided for automatically switching the LED35 on and off in dependence on a signal of the light sensor.

The thermally insulated body 2 likewise comprises an inner skin in the form of an inner container 3 facing the coolable inner chamber 4, an outer skin facing away from the inner chamber 4, and a thermal insulation body, in particular in the form of a thermally insulating foam, arranged between the outer skin and the inner container 3 as inner skin. The body 2 comprises in particular two side walls 10, which are also examples of thermally insulating walls of the household cold appliance 1. Alternatively or additionally, at least one of said insulating walls may be provided with external lighting means similar to the external lighting means 30 of the door leaf 20.

List of reference numerals

1 domestic refrigeration appliance

2 main body

3 inner container

4 coolable inner chamber

5 refrigerating plant

6 door shelf

7 grid plate

8 drawer

9 electronic control device

10 side wall

20 door leaf

21 endothelium

22 outer skin

23 insulation body

24 side surface

25 holding groove

26 side beam

30 external lighting device

31 plane light conductor

32 first plane

33 second plane

34 coating

35LED

36 circuit board

37 side edge

38 light shield

Claims

1. A domestic refrigerator having a coolable interior (4) provided for storing foodstuffs, a refrigerating device (5) for cooling the coolable interior (4), and a heat-insulating wall (20) comprising an inner skin (21) facing the coolable interior (4), an outer skin (22) facing away from the coolable interior (4), and a heat insulator (23) arranged between the inner skin (21) and the outer skin (22), characterized in that a planar lighting device (30) is provided, which comprises a transparent planar light conductor (31) having a first face (32) and a second face (33) opposite the first face (32) and provided with a light-reflecting coating (34), and at least one luminous body (35) which couples its light laterally into the planar light conductor (31), the light-reflecting coating (34) can thereby at least partially reflect the light coupled into the planar light conductor (31) and at least partially couple the light coupled into the planar light conductor (31) out of a first surface (32) of the planar light conductor (31), wherein the planar light conductor (31) is fastened with its second surface (33) on a side (24) of the outer skin (22) or inner skin (21) facing away from the thermal insulation (23), and the planar light conductor (31) is dimensioned such that it covers at least the majority, preferably substantially completely, of the side (24) of the outer skin (22) or inner skin (21) facing away from the thermal insulation (23).

2. A domestic cooling device according to claim 1, characterized in that it comprises: -an insulating body (2) having an internal container (3) defining the boundary of a coolable internal chamber (4) provided for the storage of food products; and an insulating door leaf (20) which is arranged so as to be pivotable relative to the body (2) and is designed as an insulating wall for opening and closing the coolable interior (4), wherein the planar light guide (31) is fastened to a side (24) of the outer skin (22) of the insulating door leaf facing away from the insulating body (23).

3. A domestic cooling device according to claim 2, wherein the heat-insulating door leaf (20) comprises two side beams to which the inner skin (22) and the outer skin (21) of the door leaf (20) are fixed.

4. A domestic cooling device according to claim 3, wherein at least one of the side beams (26) comprises a grip groove (25) and/or the luminous body (35) is fixed to one of the side beams (26) and extends over the entire length of a side edge (37) of the planar light conductor (31) facing this side beam (26).

5. A domestic cooling device according to any one of claims 1 to 4, wherein the lighting device (30) comprises a light screen (38) which partially overlaps the first face (32) of the planar light conductor (31) in the region where the luminaire (35) couples its light laterally into the planar light conductor (31).

6. A domestic cooling device according to claim 5, wherein the visor (38) is constructed as a sheet material, in particular a stainless steel sheet, which at least partially overlaps the side beam (26) to which the holding groove (25) is fixed.

7. A domestic cooling device according to any one of claims 1 to 6, wherein the light-reflective coating (34) is configured as a light-reflective paint, print, film or foil.

8. A domestic cooling device according to claim 7, wherein the side of the light-reflecting film or metal foil facing the planar light conductor (31) is structured and/or provided with a pattern.

9. A domestic cooling device according to any one of claims 1 to 8, wherein the second face (33) of the planar light conductor (31) is structured and/or comprises scattering particles for improving the light distribution inside the planar light conductor (31) and/or for improving the coupling-out of light from the planar light conductor (31).