Household appliance

Abstract

A household appliance comprises a back plate which is provided with an inner side and an outer side which are opposite to each other, and a through hole is formed in the back plate; the lighting device is arranged in the through hole; the lighting device comprises a light source located on the inner side of the back plate, and light emitted by the light source is suitable for being transmitted out towards the outer side of the back plate from the through hole; the light conductor is filled in an area surrounded by the through holes to receive the light, and the part, facing the outer side of the back plate, of the light conductor is of a concave-convex structure; and the non-light-transmitting part covers the front surface of the concave-convex structure, so that the light is transmitted from the side wall of the concave-convex structure. Through the scheme of the invention, a softer illumination effect can be realized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of household appliances, and in particular to a household appliance. Background Art

[0002] Household appliances are usually equipped with lighting devices to provide lighting for components. For example, household appliances can be equipped with a logo sticker on the outside or inside to indicate or highlight the trademark, and the logo sticker can be highlighted by setting a lighting device. In this way, the display effect of the trademark is improved through the ambient light provided by the lighting device, and the texture of the household appliance is improved.

[0003] At present, the ambient light provided by lighting devices is mainly front-facing flat light. For example, luminous trademarks are generally achieved by hot stamping or silk-screening on plastic parts. However, the existing front-facing lighting effect is too strong and the trademark cannot be seen clearly. When the luminous trademark is set in a position facing the user when in use, such as the back panel of a refrigerator or the front of a door of a household appliance, the light directly hitting the eyes can easily cause glare and affect the user experience. Summary of the invention

[0004] An object of an embodiment of the present invention is to provide an improved household appliance.

[0005] Therefore, an embodiment of the present invention provides a household appliance, comprising: a back panel having an inner side and an outer side opposite to each other, the back panel being provided with a through hole; a lighting device disposed in the through hole; the lighting device comprising: a light source located on the inner side of the back panel, the light emitted by the light source being suitable for passing through the through hole toward the outer side of the back panel; a light conductor filling the area surrounded by the through hole to receive the light, the portion of the light conductor facing the outer side of the back panel being a concave-convex structure; and a non-light-transmitting member covering the front surface of the concave-convex structure so that the light passes through the side wall of the concave-convex structure.

[0006] Compared with the lighting devices of existing household appliances that provide ambient lighting effects by emitting light from the front, where the light directly hits the eyes and affects the user's experience and health, the lighting device provided in this embodiment realizes side light emission through the cooperation of a concave-convex structure and a non-light-transmitting member, thereby achieving a softer lighting effect. Specifically, a concave-convex structure is formed on the light-emitting side of the optical conductor, and the front of the concave-convex structure is covered with a non-light-transmitting member to realize side light emission of the lighting device. As a result, there is no direct light on the front of the lighting device, and the light emitted by the light source is emitted from a surface that is perpendicular or nearly perpendicular to the outer surface of the non-light-transmitting member, so that a softer lighting effect can be expected. Furthermore, the lighting device arranged on the back panel can provide lighting inside the household appliance, and the ambient light provided by the side light emission is softer, so that the user's visual experience when viewing the interior of the household appliance is more comfortable.

[0007] Optionally, the projection of the side wall of the concave-convex structure on the back plate falls within the area surrounded by the projection of the non-light-transmitting member on the back plate. Thus, along the direction perpendicular to the back plate, the side wall at least does not protrude from the non-light-transmitting member, that is, the side wall is invisible when viewed from the front of the lighting device, further ensuring that the lighting device provides ambient light in the form of side light emission.

[0008] Optionally, the non-light-transmitting member includes: a first stopper covering the front surface of the convex part of the concave-convex structure; and a second stopper covering the front surface of the concave part of the concave-convex structure. Thus, the non-light-transmitting member can reliably cover all frontal parts of the concave-convex part, ensuring that the lighting device has almost no frontal light.

[0009] Optionally, the light reflection coefficient of the second blocking portion is greater than the light reflection coefficient of the first blocking portion. Thus, the light transmitted from the side wall is diffused to the second blocking portion located on the front surface of the concave portion, and the second blocking portion has a larger light reflection coefficient and thus reflects more strongly, resulting in a better lighting effect of the ambient light.

[0010] Optionally, the second stopper and the outer side of the back plate are processed by the same surface treatment process. Thus, the back plate provided with the lighting device is more unified visually, has no obvious sense of separation, and has good integrity.

[0011] Optionally, the second stopper and the optical conductor insert are integrally molded. Thus, the integrated second stopper can reliably shield the front surface of the concave portion in the optical conductor, and no additional fixing structure is required to fix the relative position of the second stopper and the optical conductor. Furthermore, the alignment of the second stopper and the concave portion is more precise. Furthermore, the manufacturing process is simple, which is conducive to reducing costs.

[0012] Optionally, the second stopper is provided with at least one light-transmitting hole, and the convex part covers the at least one light-transmitting hole. Thus, the light emitted by the light source is ensured to pass smoothly through the at least one light-transmitting hole and then reach the side wall. Furthermore, the second stopper can be an integral part, and during insert injection molding, the second stopper of the integral part is placed in the mold for injection molding, which is convenient for production and installation.

[0013] Optionally, in a direction perpendicular to the back panel, the at least one light-transmitting hole and the light source are staggered. Thus, a uniform lighting effect is provided without producing a grainy feeling. Furthermore, the staggered design reduces the overall thickness of the lighting device, which is conducive to adapting to household appliances with limited thickness of the space behind the back panel, freeing up more space for the space in front of the back panel.

[0014] Optionally, the first stopper includes a main body covering the front surface of the convex part, and a limiting part extending from the main body toward the inner side of the back plate, and the convex part includes an adapting part, and the limiting part is suitable for cooperating with the adapting part to limit the relative movement of the first stopper and the convex part in a first plane, wherein the first plane is perpendicular to the inner side of the back plate and points to the outer side. Thus, the limiting part and the adapting part cooperate to position the first stopper, ensuring that the first stopper reliably covers the front side of the convex part.

[0015] Optionally, the first stopper is flush with or protrudes from the side wall, thereby ensuring that the first stopper completely covers the front side of the convex part after installation.

[0016] Optionally, the concave part of the concave-convex structure is flush with the back plate. Thus, the light emitted by the lighting device can be diffused to the surrounding back plate, which is conducive to expanding the illumination range of the ambient light. Furthermore, a relief-like structure is formed on the back plate in the illumination area, which is conducive to improving the texture.

[0017] Optionally, the convex part of the concave-convex structure protrudes forward from the back plate. Thus, the light transmitted from the side wall is easier to diverge, which is conducive to obtaining a wider range of ambient light lighting effects.

[0018] Optionally, the layout of the concave-convex structure is suitable for forming characters and / or patterns. Thus, the softer lighting effect provided by the side-emitting lighting device improves the display effect of the characters and / or patterns.

[0019] Optionally, the lighting device further comprises: a bottom plate; a circuit substrate fixed to the bottom plate, and the light source is arranged on the circuit substrate. Thus, based on the circuit substrate carrying and controlling the light output of the light source, and based on the bottom plate carrying and positioning the circuit substrate, the light source can be reliably fixed in the lighting device.

[0020] Optionally, the optical conductor includes an extension portion extending into the through hole, and the extension portion is fixed to the bottom plate, thereby fixing the optical conductor through the bottom plate to prevent the optical conductor from falling off unexpectedly.

[0021] Optionally, the household appliance further comprises: a sealing portion arranged along the through hole, the sealing portion being adapted to fill the gap between the lighting device and the edge of the through hole, thereby preventing liquid in front of the back plate from flowing into the lighting device through the gap, thereby extending the service life of the device.

[0022] Optionally, the back plate is bent along the edge of the through hole toward the inner side of the back plate to form a flange, and the optical conductor is supported on or overlapped on the flange. Thus, the assembly gap between the back plate and the lighting device is not visible, and the appearance of the back plate is more beautiful when viewed from the front.

[0023] Optionally, the back plate includes a first plate and a second plate, the first plate covers the surface of the second plate, the first plate and the second plate are respectively provided with holes to form the through hole, wherein the first plate is made of a metal material. Thus, the second plate can play a supporting role, and covering the front of the second plate with a layer of metal plate is conducive to improving the aesthetics of the front of the back plate and improving the texture.

[0024] Optionally, the second plate is provided with a first fixing portion around the through hole, and the lighting device includes a first coupling portion, and the first fixing portion cooperates with the first coupling portion to fix the lighting device in the through hole, thereby ensuring the installation reliability of the lighting device and preventing the lighting device from falling off from the through hole unexpectedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a household appliance according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Partial exploded view of the mid-back plate;

[0027] Figure 3 yes Figure 1 Exploded view of the lighting fixture;

[0028] Figure 4 yes Figure 1 Cross-sectional view along AA direction;

[0029] Figure 5 yes Figure 1 A schematic diagram of a part of the structure of the lighting device;

[0030] Figure 6 yes Figure 1 Cross-sectional view along direction BB;

[0031] Figure 7 yes Figure 1 Cross-sectional view along CC direction;

[0032] Figure 8 yes Figure 4 A partial enlarged view of the middle area D;

[0033] Fig. 9 is a diagram showing the lighting effect of a backplane in a typical application scenario of an embodiment of the present invention;

[0034] In the attached figure:

[0035] 1-household appliance; 10-box; 101-storage room; 11-door; 12-back plate; 12a-inside of back plate; 12b-outside of back plate; 121-through hole; 122-flange; 123-first plate; 124-second plate; 125-first fixing part; 126-hook; 127-convex rib; 13-sealing part; 2-illuminating device; 21-light source; 22-light conductor; 221-concave-convex structure; 221a-side wall of concave-convex structure; 221b-front surface of concave-convex structure; 222-convex part; 222a-front surface of convex part; 22 3-concave part; 223a-front surface of the concave part; 224-extension part; 225-second coupling part; 226-first coupling part; 23-non-light-transmitting member; 231-first blocking part; 232-second blocking part; 233-light-transmitting hole; 234-main body; 235-limiting part; 236-adapting part; 24-bottom plate; 241-hook; 242-positioning column; 243-limiting groove; 25-circuit substrate; 251-electric wire; 252-positioning hole; x-width direction of household appliance; y-depth direction of household appliance; z-height direction of household appliance. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] Figure 1 Schematic diagram of a household appliance 1 according to an embodiment of the present invention.

[0038] The household appliance 1 may be a refrigeration appliance, a dishwasher, a clothes processing device, an oven, a whole box, etc. The refrigeration appliance may be, for example, a refrigerator, a freezer, a wine cabinet, etc.

[0039] For ease of description, in this embodiment, the width direction of the household appliance 1 is recorded as the x direction, the depth direction is recorded as the y direction, and the height direction is recorded as the z direction. In this embodiment, the front and rear directions refer to the y direction and the opposite direction thereof, wherein the front or the front side refers to the direction facing the user when the household appliance 1 is in use, and the rear or the rear side refers to the direction away from the user when the household appliance 1 is in use.

[0040] Specifically, the household appliance 1 described in this embodiment may include a housing 10 and a door 11. The housing 10 defines at least one storage chamber 101 (also referred to as a compartment), and the door 11 is movably connected to the front of the housing 10 to open or close at least a portion of the storage chamber 101. In an example where the household appliance 1 is a refrigeration appliance, the storage chamber 101 may include a freezer, a refrigerator, or a temperature-changing chamber.

[0041] Furthermore, the household appliance 1 may include a back plate 12, which is suitable for forming a rear wall of the storage chamber 101. There may be a non-zero gap between the back plate 12 and the door shell of the household appliance 1 to provide components such as an air duct.

[0042] Furthermore, the back plate 12 may have an inner side 12a and an outer side 12b opposite to each other, wherein the inner side 12a faces the air duct, and the outer side 12b faces the storage chamber 101. When the door 11 is opened to expose the storage chamber 101, the outer side 12b of the back plate 12 faces the user.

[0043] Further, combined with Figure 1 and Figure 2 The back plate 12 may be provided with a through hole 121. For example, the through hole 121 may penetrate the back plate 12 along the y direction and connect the inner side 12a and the outer side 12b.

[0044] Further reference Figure 1 and Figure 2 The household appliance 1 may further include a lighting device 2 disposed in the through hole 121. To more clearly illustrate the technical features of this embodiment, the area of ​​the back plate 12 where the lighting device 2 is disposed is exemplarily shown and described in detail in conjunction with the accompanying drawings.

[0045] Further, combined with Figures 1 to 4 , Figure 8 The lighting device 2 may include a light source 21, which is located on the inner side 12a of the back plate 12, and the light emitted by the light source 21 is suitable for passing through the through hole 121 toward the outer side 12b of the back plate 12. For example, the light source 21 may include a light emitting device. The light emitting device may include a light-emitting diode (LED) or other devices capable of providing a light source.

[0046] Further reference Figures 1 to 4 , Figure 8 The lighting device 2 may further include a light conductor 22, which fills the area surrounded by the through hole 121 to receive light, and the portion of the light conductor 22 facing the outer side 12b of the back plate 12 is a concave-convex structure 221. The light conductor 22 guides the light emitted by the light source 21 located at the inner side 12a to the outer side 12b of the back plate 12, so that lighting can be provided in the storage room 101.

[0047] For example, the projection of the optical conductor 22 in the y direction can basically cover the through hole 121, so that when viewed from the front of the back plate 12, there is no obvious gap between the back plate 12 and the lighting device 2, and the appearance of the storage room 101 is more beautiful.

[0048] Furthermore, the concave-convex structure 221 specifically means that the surface of the light conductor 22 facing the outer side 12b is not a large plane, but has a certain height difference along the y direction. The convex part 222 in the concave-convex structure 221 is further forward and deep into the storage chamber 101 than the concave part 223. Thus, the light conductor 22 forms a relief-like structure on the outer side 12b of the back plate 12, and the appearance of the back plate 12 is not too monotonous, which is conducive to improving the texture of the household appliance 1.

[0049] Further, the convex portion 222 and the concave portion 223 are connected by the side wall 221 a.

[0050] Further reference Figures 1 to 4 , Figure 8 The lighting device 2 may further include a non-light-transmitting member 23 covering the front surface 221 b of the concave-convex structure 221 , so that light can be transmitted from the side wall 221 a of the concave-convex structure 221 .

[0051] For example, the front surface 221b may specifically refer to the front side of the concave-convex structure 221, and may also be called the front side. The front surface 221b of the concave-convex structure 221 may specifically include the front surface 222a of the convex portion 222 and the front surface 223a of the concave portion 223.

[0052] The front surface 221 b may be perpendicular to the y direction. Alternatively, the front surface 221 b may have an angle less than 90° with the y direction.

[0053] Thus, the lighting device 2 realizes side light emission through the cooperation of the concave-convex structure 221 and the non-light-transmitting member 23, thereby achieving a softer lighting effect. Fig. 9 shown.

[0054] Specifically, the light-emitting side of the light conductor 22 forms a concave-convex structure 221, and the front of the concave-convex structure 221 is covered by the non-light-transmitting member 23, so that the lighting device 2 emits light from the side. As a result, there is no direct light from the front of the lighting device 2, and the light emitted by the light source 21 is emitted from a surface that is perpendicular or nearly perpendicular to the outer surface of the non-light-transmitting member 23, so it is expected that a softer lighting effect will be obtained. Furthermore, the lighting device 2 disposed on the back panel 12 can provide lighting inside the household appliance 1, and the ambient light provided by the side light emission is softer, and the user's visual experience when viewing the inside of the household appliance 1 is more comfortable.

[0055] In some embodiments, the shape of the through hole 121 may be circular, and accordingly, the outer contour of the lighting device 2 in a plane perpendicular to the y direction may also be circular, so as to better fit and fill the entire through hole 121. In practical applications, the shapes of the through hole 121 and the lighting device 2 may be reasonably designed according to the shape of the logo to be illuminated, for example, they may be square, polygonal, irregular, etc.

[0056] In some embodiments, the light conductor 22 can be made of a light diffusion material with a high light diffusion rate. Light incident from a specific angle is scattered in all directions in the light conductor 22, so that the entire light conductor 22 emits light uniformly. Directional light emission can be formed by blocking the area where light emission is not required, and the light emission direction and light input direction can be different. In this way, the light path can be adjusted through the light conductor 22.

[0057] For example, the light conductor 22 can be made by adding a light diffusing agent into a substrate such as polycarbonate (PC), polymethyl methacrylate (PMMA), or polystyrene (PS).

[0058] In some embodiments, the back panel 12 may be provided with a hook 126 to be fixed to the internal structure of the household appliance 1 .

[0059] In a specific implementation, continue to refer to Figure 4 , Figures 6 to 8 The projection of the side wall 221a of the concave-convex structure 221 on the back plate 12 may fall into the area surrounded by the projection of the non-light-transmitting member 23 on the back plate 12. For example, the side wall 221a may be perpendicular to the back plate 12.

[0060] Therefore, along the direction perpendicular to the back panel 12 (for example, the y direction), the side wall 221a at least does not protrude from the non-light-transmitting member 23, that is, the side wall 221a is not visible from the front of the lighting device 2, further ensuring that the lighting device 2 provides ambient light in a side-emitting manner.

[0061] In a specific implementation, continue to refer to Figures 1 to 7 The non-light-transmissive member 23 may include: a first stopper 231 covering a front surface 222 a of the convex portion 222 of the concave-convex structure 221 ; and a second stopper 232 covering a front surface 223 a of the concave portion 223 of the concave-convex structure 221 .

[0062] Specifically, the shape and / or pattern of the first stopper 231 may be designed according to the shape and / or pattern of the convex portion 222 to ensure that the first stopper 231 reliably and completely blocks the front surface 222 a of the convex portion 222 .

[0063] Similarly, the shape and / or pattern of the second stopper 232 may be designed according to the shape and / or pattern of the concave portion 223 to ensure that the second stopper 232 reliably and completely blocks the front surface 223 a of the concave portion 223 .

[0064] Therefore, the non-light-transmissive member 23 can reliably cover all front portions of the concave-convex structure 221 , ensuring that almost no light is emitted from the front of the lighting device 2 .

[0065] In some embodiments, the first stopper 231 may be attached to the front surface 222a of the convex portion 222. For example, the first stopper 231 may be fixed to the front of the convex portion 222 by double-sided tape or glue.

[0066] Similarly, the second stopper 232 may also be fixed to the front surface 223 a of the concave portion 223 by gluing or the like.

[0067] In a specific implementation, the light reflection coefficient of the second blocking portion 232 may be greater than the light reflection coefficient of the first blocking portion 231. Thus, the light transmitted from the side wall 221a is diffused to the second blocking portion 232 located on the front surface 223a of the concave portion 223. Since the light reflection coefficient of the second blocking portion 232 is greater, the reflection is stronger, and the lighting effect of the ambient light is better.

[0068] In some embodiments, the second baffle 232 may be, for example, a brushed metal part, a dark-colored plastic part, etc., so as to better reflect light.

[0069] In some embodiments, the first baffle 231 may be, for example, a metal high-gloss decorative part. By performing chrome plating or other processing on the metal surface, the first baffle 231 is brighter and more eye-catching under the background illumination of the light transmitted from the side wall 221a. In the example where the layout of the convex portion 222 forms characters and / or patterns for identifying a trademark logo, such a design is conducive to obtaining a more eye-catching display effect of the trademark logo, such as Fig. 9 shown.

[0070] In a specific implementation, the surface treatment effects of the second stopper 232 and the outer side 12b of the back plate 12 can be the same or similar. Thus, the back plate 12 provided with the lighting device 2 is more unified visually, without obvious sense of separation, and has good integrity.

[0071] For example, the second stop portion 232 and the outer side 12 b of the back plate 12 can be processed by the same surface treatment process.

[0072] For another example, the colors of the second stopper 232 and the outer side 12b of the back plate 12 can be consistent or similar. On this basis, the surface treatment method of the second stopper 232 can be different from the surface treatment method of the outer side 12b of the back plate 12. For example, the surface of the second stopper 232 away from the concave portion 223 can be surface treated by sandblasting, wire drawing, etc. Therefore, the surface treatment methods of the second stopper 232 are more flexible.

[0073] In a specific implementation, continue to refer to Figures 4 to 8 The second stopper 232 can be insert-molded with the optical conductor 22 as one piece.

[0074] Specifically, during manufacturing, the light conductor 22 can be directly obtained by injection molding on the second stopper 232. Furthermore, during assembly, the second stopper 232 and the light conductor 22, which are injection molded together into a whole, are assembled in an integrated manner.

[0075] Further, the second stopper 232 is embedded in the optical conductor 22, so that the relative position of the second stopper 232 and the optical conductor 22 is fixed. For example, the second stopper 232 is sandwiched between the concave portion 223 and the convex portion 222.

[0076] Thus, the integrated second stopper 232 can reliably block the front surface 223a of the concave portion 223 in the optical conductor 22, and no additional fixing structure is required to fix the relative position of the second stopper 232 and the optical conductor 22. Furthermore, the manufacturing process is simple, which is conducive to reducing costs. Furthermore, the alignment of the second stopper 232 and the concave portion 223 is more accurate.

[0077] In a specific implementation, continue to refer to Figures 4 to 8 The second stopper 232 may be provided with at least one light-transmitting hole 233, and the convex portion 222 covers at least one light-transmitting hole 233. Figure 5 The structure of the lighting device 2 except the convex portion 222 is exemplarily shown to more clearly show at least one light-transmitting hole 233 .

[0078] Specifically, combined Figure 3 and Figure 5 The pattern formed by the arrangement of at least one light-transmitting hole 233 can match the pattern of the convex portion 222. Thus, the light emitted by the light source 21 diffuses in the concave portion 223 and further diffuses to the convex portion 222 through at least one light-transmitting hole 233 with minimal loss.

[0079] Further, the convex portion 222 may cover and fill at least one light transmission hole 233 .

[0080] For example, the second stopper 232 may be hollowed out to provide at least one light-transmitting hole 233, and then insert-molded to obtain an integral part with the light conductor 22. During the injection molding, the light conductor 22 enters and fills each light-transmitting hole 233, so that the concave portion 223 and the convex portion 222 are respectively located on both sides of the second stopper 232 along the y direction, and the concave portion 223 and the convex portion 222 are connected in at least one light-transmitting hole 233.

[0081] Thus, at least one light-transmitting hole 233 ensures that the light emitted by the light source 21 can pass smoothly and reach the side wall 221 a.

[0082] Furthermore, in at least one of the light-transmitting holes 233, adjacent light-transmitting holes 233 are not connected. Thus, the second stopper 232 can be an integral part, rather than being divided into a plurality of parts. When the insert is injected, the integral second stopper 232 can be placed in the mold for injection molding, which is convenient for production and installation.

[0083] In a specific implementation, continue to refer to Figure 6 In a direction perpendicular to the back plate 12 (eg, the y direction), at least one light-transmitting hole 233 may be offset from the light source 21 .

[0084] Specifically, the number of the light sources 21 can be multiple and arranged in an array.

[0085] Furthermore, the shape and / or pattern formed by the multiple light sources 21 can be designed according to the layout of the concave-convex structure 221. For example, by reasonably designing the specific arrangement positions of the multiple light sources 21, the light intensity emitted by the sidewalls 221a at various locations of the concave-convex structure 221 is made substantially consistent. As a result, the overall light output consistency of the lighting device 2 is better.

[0086] Furthermore, the setting position of the light source 21 and the light-transmitting hole 233 are staggered in the front-to-back direction. That is, in the y direction, the light source 21 and the light-transmitting hole 233 are not on the same straight line. Therefore, the scattered light of the light source 21 in the light conductor 22 is used instead of the direct light, which is conducive to weakening the granularity of the light source 21.

[0087] Thus, the light source 21 is arranged in a special shape, so that a uniform lighting effect can be provided without producing a grainy feeling. Furthermore, the design of the staggered arrangement reduces the overall thickness of the lighting device 2 (for example, the dimension in the y direction), which is conducive to adapting to the household appliance 1 whose space behind the back plate 12 is limited in thickness, freeing up more space for the space in front of the back plate 12 (for example, the storage room 101).

[0088] In a specific implementation, continue to refer to Figure 4 , Figures 6 to 8 The first stop portion 231 may include a main body portion 234 covering the front surface 22a of the convex portion 222, and a limiting portion 235 extending from the main body portion 234 toward the inner side 12a of the back plate 12, and the convex portion 222 may include an adapting portion 236, and the limiting portion 235 is suitable for cooperating with the adapting portion 236 to limit the relative movement of the first stop portion 231 and the convex portion 222 in a first plane, wherein the first plane is perpendicular to the direction pointing from the inner side 12a of the back plate 12 to the outer side 12b (for example, the y direction).

[0089] Specifically, the front surface 222 a of the convex portion 222 may bulge forward to form a boss, and a step may be provided between the boss and the side wall 221 a , and the step is suitable for forming the fitting portion 236 .

[0090] Furthermore, the edge of the main body portion 234 can be folded backward to form a flange, and the flange is suitable for forming a limiting portion 235.

[0091] During assembly, the first stopper 231 approaches the optical conductor 22 , and the flange is buckled on the step on the corresponding side to achieve positioning, ensuring that the main body 234 and the front surface 222 a of the convex portion 222 are better aligned.

[0092] Thus, the limiting portion 235 and the adapting portion 236 cooperate to position the first stop portion 231 , ensuring that the first stop portion 231 can reliably cover the front surface of the convex portion 222 .

[0093] In some embodiments, considering manufacturing tolerance and assembly tolerance, there may be a non-zero gap between the limiting portion 235 and the adapting portion 236. This helps to ensure that the first stopper 231 after assembly can completely cover the front surface 222a of the convex portion 222 as much as possible.

[0094] In some embodiments, the first stopper 231 may be flush with or protrude from the side wall 221 a.

[0095] For example, the limiting portion 235 is at least not recessed into the side wall 221 a.

[0096] For another example, the edge of the main body 234 is flush with or protrudes from the side wall 221a in the first plane.

[0097] Therefore, the projection of the first stopper 231 in the y direction completely covers the projection of the side wall 221 a in the y direction, ensuring that the first stopper 231 completely covers the front side of the convex portion 222 after installation.

[0098] In a specific implementation, continue to refer to Figures 1 to 9 , the concave portion 223 of the concave-convex structure 221 can be flush with the back plate 12. Thus, the light emitted by the lighting device 2 can be diffused to the surrounding back plate 12 (such as Fig. 9 As shown), it is helpful to expand the lighting range of the ambient light.

[0099] Furthermore, the convex portion 222 protrudes forward from the back plate 12. For example, the convex portion 222 protrudes forward from the surface of the back plate 12 located at the outer side 12b. As a result, the light transmitted from the side wall 221a is more easily dispersed, which is conducive to obtaining a wider range of ambient light lighting effects. Furthermore, the back plate 12 forms a relief-like structure in the lighting area, which is conducive to improving the texture of the household appliance 1.

[0100] In a variation, the convex portion 222 of the concave-convex structure 221 may be flush with the back plate 12, and further, the concave portion 223 is recessed toward the inner side 12a of the back plate 12. Thus, the outer side 12b of the back plate 12 has no protruding structure, and more space can be released for the storage chamber 101.

[0101] In a specific implementation, the layout of the concave-convex structure 221 may be suitable for forming characters and / or patterns. The characters may be, for example, a trademark logo. Figures 1 to 9 The pattern formed by the layout of the convex part 222 is used as an example for exemplary display. Thus, the softer lighting effect provided by the lighting device 2 with side light emission improves the display effect of characters and / or patterns.

[0102] In one variation, characters and / or patterns may be formed by the layout of the concave portions 223 .

[0103] In some embodiments, the first stopper 231 and / or the second stopper 232 may include a metal sheet, and / or may be coated with a metal coating on a surface facing the outer side 12 b of the back plate 12 .

[0104] In a specific implementation, continue to refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 The lighting device 2 may further include: a bottom plate 24 ; a circuit substrate 25 fixed to the bottom plate 24 , and the light source 21 may be disposed on the circuit substrate 25 .

[0105] Specifically, the bottom plate 24 and the circuit substrate 25 may be disposed on a side of the optical conductor 22 facing the inner side 12a of the back plate 12. Further, along the y direction, the circuit substrate 25 is located between the bottom plate 24 and the optical conductor 22.

[0106] Furthermore, a plurality of light sources 21 may be arranged in an array on a side of the circuit substrate 25 facing the light conductor 22 .

[0107] Furthermore, there may be a non-zero gap between the circuit substrate 25 and the optical conductor 22 , so that the light emitted by the light source 21 reaches the optical conductor 22 after being diverged to a certain extent.

[0108] For example, the bottom plate 24 may be a plastic member.

[0109] For another example, the circuit substrate 25 may include a printed circuit board, and the light emitting device may be pre-soldered or electrically connected to the circuit substrate 25 in any other manner.

[0110] Therefore, the circuit substrate 25 carries and controls the light emission of the light source 21 , and the bottom plate 234 carries and positions the circuit substrate 235 , so that the light source 21 is reliably fixed in the lighting device 2 .

[0111] In some embodiments, when the distance between the circuit substrate 25 and the optical conductor 22 (eg, the second stopper 232 embedded in the optical conductor 22) is small, the light source 21 can be staggered with the light-transmitting hole 233. Accordingly, the overall thickness of the lighting device 2 along the y direction can be made smaller.

[0112] In some embodiments, when the distance between the circuit substrate 25 and the second stopper 232 is large enough, the light source 21 can be in the same straight line with the light-transmitting hole 233 along the y direction. In this example, since the distance between the circuit substrate 25 and the second stopper 232 is large enough, even if the light source 21 is arranged directly behind the light-transmitting hole 233, the light emitted by the light source 21 is sufficiently diffused when it reaches the light-transmitting hole 233, and no obvious graininess is generated.

[0113] In some embodiments, the circuit substrate 25 can be fixed to the bottom plate 24 by double-sided tape, hooks, or heat riveting.

[0114] In some embodiments, two wires 251 may be led out from the back of the circuit substrate 25 to achieve electrical connection with the household appliance 1 .

[0115] In some embodiments, continue to refer to Figure 3 and Figure 6 The bottom plate 24 may be provided with a positioning post 242 extending toward the circuit substrate 25, and the circuit substrate 25 is provided with a corresponding positioning hole 252. During assembly, the positioning post 242 extends into the corresponding positioning hole 252 to align the circuit substrate 25 with the bottom plate 24.

[0116] In a specific implementation, continue to refer to Figures 3 to 5 The optical conductor 22 may include an extension portion 224 extending into the through hole 121, and the extension portion 224 may be fixed to the bottom plate 24. Thus, the optical conductor 22 is fixed by the bottom plate 24 to prevent the optical conductor 22 from falling off unexpectedly.

[0117] Specifically, the circular bottom plate 24 may be provided with one or more hooks 241 spaced apart around the edge, and the hooks 241 extend toward the optical conductor 22 .

[0118] Furthermore, the extension portion 224 may be arranged around the outer contour of the concave-convex structure 221 and extend from the concave-convex structure 221 toward the bottom plate 24. One or more second coupling portions 225 may be arranged at intervals on the extension portion 224. The second coupling portion 225 may be, for example, a hole opened in the extension portion 224.

[0119] During assembly, the end of the extension portion 224 away from the concave-convex structure 221 is pressed against the bottom plate 24, and the hook 241 hooks the corresponding second coupling portion 225. Thus, the bottom plate 24 is fixed on the optical conductor 22 via a circle of hooks 241.

[0120] Furthermore, the extension portion 224 is adapted to form a side boundary of the lighting device 2. The extension portion 224, the concave portion 223 and the bottom plate 24 together enclose a space for accommodating the circuit substrate 25.

[0121] In a specific implementation, continue to refer to Figures 3 to 7 The household appliance 1 may further include a sealing portion 13 disposed along the through hole 121 , wherein the sealing portion 13 is adapted to fill a gap between the lighting device 2 and an edge of the through hole 121 .

[0122] Specifically, the sealing portion 13 may include a silicone ring, which may be sleeved on the optical conductor 22 and located between the optical conductor 22 and the back plate 12 .

[0123] For example, in the first plane, the size of the concavo-convex structure 221 (for example, the diameter of the circular concavo-convex structure 221) can be larger than the size of the extension 224. Further, a silicone ring can be sleeved at the connection between the concavo-convex structure 221 and the extension 224, and the silicone ring can be squeezed by the tight fit between the lighting device 2 and the back plate 12 to prevent the water on the outer side 12b of the back plate 12 from flowing into the interior of the lighting device 2. In the scenario where the household appliance 1 is a refrigeration appliance, the water on the outer side 12b of the back plate 12 can be, for example, condensed water in the storage chamber 101.

[0124] Furthermore, the concave-convex structure 221 with a larger diameter can shield the sealing portion 13 from the front, thereby making the front side of the back plate 12 more aesthetically pleasing.

[0125] In this way, liquid in front of the back plate 12 is prevented from flowing into the lighting device 2 through the gap, thereby extending the service life of the device.

[0126] In a specific implementation, continue to refer to Figure 4 , Figures 6 to 8 The back plate 12 can be bent along the edge of the through hole 121 toward the inner side 12 a of the back plate 12 to form a flange 122 , and the optical conductor 22 can be supported on or overlapped on the flange 122 .

[0127] Specifically, the flange 122 may extend from the edge of the through hole 121 backwards and toward the center of the through hole 121 .

[0128] Furthermore, the portion of the concavo-convex structure 221 protruding outward from the extension portion 224 in the first plane can be supported or overlapped on the flange 122 from the outer side 12b of the back plate 12. The projection of the concavo-convex structure 221 in the y direction at least partially overlaps with the projection of the flange 122 in the y direction.

[0129] Therefore, the lighting device 2 and the back plate 12 are matched with each other by an inclined surface, the assembly gap between the back plate 12 and the lighting device 2 is not visible, and the appearance of the back plate 12 is more beautiful when viewed from the front.

[0130] In a specific implementation, continue to refer to Figure 4 , Figures 6 to 8The back plate 12 may include a first plate 123 and a second plate 124, wherein the first plate 123 covers the surface of the second plate 124. That is, the first plate 123 is located in front of the second plate 124, the front surface of the first plate 123 faces the outer side 12b of the back plate 12, and the rear surface of the second plate 124 faces the inner side 12a of the back plate 12.

[0131] Furthermore, the first plate 123 and the second plate 124 may be respectively opened to form a through hole 121. For example, the lighting device 2 may be fixed on the second plate 124 behind the first plate 123 through the through hole 121.

[0132] In some embodiments, the first plate 123 may be made of metal material.

[0133] In some embodiments, the second plate 124 may be made of plastic.

[0134] Further, the thickness of the second plate 124 may be greater than the thickness of the first plate 123 .

[0135] Therefore, the second plate 124 can play a supporting role, and covering a layer of metal plate in front of the second plate 124 is beneficial to improving the aesthetics of the front side of the back plate 12 and improving the texture.

[0136] In a variation, the second plate 124 may not have a hole, and the lighting device 2 is directly fixed on the second plate 124 after extending into the through hole 121 opened on the first plate 123 .

[0137] In some embodiments, the edges of the first plate 123 and the second plate 124 around the through hole 121 can be folded to form a flange 122. The two flanges 122 can be substantially in contact with each other to assist in fixing.

[0138] Further, the sealing portion 13 may be sandwiched between a portion of the light conductor 22 protruding forward out of the back plate 12 and the flange 122 of the first plate 123 .

[0139] Furthermore, the light conductor 22 is supported in the flange 122, and the outer circle can be an inclined surface to fit with the flange 122. The inner circle can be surrounded by the extension 224 and the flange 122 of the first plate 123 to form a space suitable for accommodating the silicone ring.

[0140] In a specific implementation, continue to refer to Figures 3 to 5 and Figure 7 The second plate 124 may be provided with a first fixing portion 125 around the through hole 121, and the lighting device 22 may include a first coupling portion 226. The first fixing portion 125 cooperates with the first coupling portion 226 to fix the lighting device 2 in the through hole 121. Thus, the installation reliability of the lighting device 2 is ensured, and the lighting device 2 is prevented from unexpectedly falling off from the through hole.

[0141] Specifically, the first coupling portion 226 can be provided on the optical conductor 22. For example, a circle of buckles can be provided at intervals on the extension portion 224, and a circle of fixing holes can be provided correspondingly on the flange 122 of the second plate 124 to form the first fixing portion 125. During assembly, the extension portion 224 extends from the outer side 12b of the back plate 12 into the through hole 121, and the buckles hook the corresponding fixing holes, so that the lighting device 2 is reliably fixed in the through hole 121.

[0142] In a specific implementation, continue to refer to Figure 3 and Figure 7 The lighting device 2 may be provided with a limiting groove 243, and the second plate 124 may be provided with a convex rib 127 in a corresponding manner. When the lighting device 2 is assembled to the through hole 121, the convex rib 127 is inserted into the limiting groove 243, thereby limiting the angle of the lighting device 2 during assembly and preventing the lighting device 2 from being offset during assembly.

[0143] For example, the limiting groove 243 may include a groove formed in the bottom plate 24 and recessed inward from the edge of the bottom plate 24. The rib 127 may protrude from the flange 122 of the second plate 124 toward the inner side 12a.

[0144] Thus, the rotation of the lighting device 2 relative to the back plate 12 within the first plane is restricted, so as to avoid the characters and / or patterns formed by the layout of the concave-convex structure 221 on the lighting device 2 after being installed on the back plate 12 being skewed to affect the final presentation effect.

[0145] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in this disclosure are intended to be illustrative rather than limiting, unless otherwise stated. In specific implementations, the technical features of one or more dependent claims may be combined with the technical features of the independent claims, and the technical features from the corresponding independent claims may be combined in any appropriate manner rather than just by the specific combinations listed in the claims.

[0146] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A household appliance comprising: A back plate (12) having an inner side (12a) and an outer side (12b) opposite to each other, wherein the back plate (12) is provided with a through hole (121); A lighting device (2) is arranged in the through hole (121); Characterized in that the lighting device (2) comprises: A light source (21) is located on the inner side (12a) of the back plate (12), and the light emitted by the light source (21) is suitable for passing through the through hole (121) toward the outer side (12b) of the back plate (12); A light conductor (22) fills the area surrounded by the through hole (121) to receive the light, and a portion of the light conductor (22) facing the outer side (12b) of the back plate (12) presents a concave-convex structure (221); The non-light-transmissive member (23) covers the front surface (221b) of the concave-convex structure (221) so as to allow the light to be transmitted from the side wall (221a) of the concave-convex structure (221).

2. The household appliance according to claim 1, characterized in that: The projection of the side wall (221a) of the concave-convex structure (221) on the back plate (12) falls within the area surrounded by the projection of the non-light-transmitting member (23) on the back plate (12).

3. The household appliance according to claim 1, characterized in that: The non-light-transmitting member (23) comprises: A first stopper (231) covers a front surface (222a) of the convex portion (222) of the concave-convex structure (221); The second stopper (232) covers the front surface (223a) of the concave portion (223) of the concave-convex structure (221).

4. The household appliance according to claim 3, characterized in that: The light reflection coefficient of the second blocking portion (232) is greater than the light reflection coefficient of the first blocking portion (231), and / or the second blocking portion (232) and the outer side (12b) of the back plate (12) are processed using the same surface treatment process.

5. The household appliance according to claim 3, characterized in that: The second stopper (232) and the optical conductor (22) are insert-molded as one piece.

6. The household appliance according to claim 5, characterized in that: The second blocking portion (232) is provided with at least one light-transmitting hole (233), and the convex portion (222) covers the at least one light-transmitting hole (233).

7. The household appliance according to claim 6, characterized in that: In a direction perpendicular to the back plate (12), the at least one light-transmitting hole (233) and the light source (21) are arranged in a staggered manner.

8. The household appliance according to claim 3, characterized in that: The first stop portion (231) comprises a main body portion (234) covering the front surface (222a) of the convex portion (222), and a limiting portion (235) extending from the main body portion (234) toward the inner side (12a) of the back plate (12), the convex portion (222) comprises an adapting portion (236), and the limiting portion (235) is suitable for cooperating with the adapting portion (236) to limit the relative movement of the first stop portion (231) and the convex portion (222) in a first plane, wherein the first plane is perpendicular to the direction from the inner side (12a) of the back plate (12) to the outer side (12b).

9. The household appliance according to claim 3, characterized in that: The first stopper (231) is flush with or protrudes from the side wall (221a).

10. The household appliance according to claim 1, characterized in that: The concave portion (223) of the concave-convex structure (221) is flush with the back plate (12), and / or the convex portion (222) of the concave-convex structure (221) protrudes forward from the back plate (12).

11. The household appliance according to claim 1, characterized in that: The layout of the concave-convex structure (221) is suitable for forming characters and / or patterns.

12. The household appliance according to claim 1, characterized in that: The lighting device (2) further comprises: a bottom plate (24); A circuit substrate (25) is fixed to the bottom plate (24), and the light source (21) is arranged on the circuit substrate (25).

13. The household appliance according to claim 12, characterized in that: The optical conductor (22) comprises an extension portion (224) extending into the through hole (121), and the extension portion (224) and the bottom plate (24) are fixed to each other.

14. The household appliance according to claim 1, characterized in that: Also includes: A sealing portion (13) is arranged along the through hole (121), and the sealing portion (13) is suitable for filling a gap between the lighting device (2) and an edge of the through hole (121).

15. The household appliance according to claim 1, characterized in that: The back plate (12) is bent along the edge of the through hole (121) toward the inner side (12a) of the back plate (12) to form a flange (122), and the optical conductor (22) is supported on or overlapped with the flange (122).

16. The household appliance according to claim 1, characterized in that: The back plate (12) comprises a first plate (123) and a second plate (124), wherein the first plate (123) covers the surface of the second plate (124), and the first plate (123) and the second plate (124) are respectively opened to form the through hole (121), wherein the first plate (123) is made of metal material.

17. The household appliance according to claim 16, characterized in that: The second plate (124) is provided with a first fixing portion (125) around the through hole (121); the lighting device (2) comprises a first coupling portion (226); the first fixing portion (125) cooperates with the first coupling portion (226) to fix the lighting device (2) in the through hole (121).

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