Lighting device, refrigerator and control method thereof

Abstract

The invention discloses a lighting device, a refrigerator and a control method of the refrigerator, and the lighting device comprises a mounting frame, a back plate assembly, a light emitting plate, a light emitting part and a plurality of light blocking pieces arranged at intervals; the back plate assembly is arranged on the back side of the mounting frame; the light emitting plate is mounted on the front side of the mounting frame and is opposite to the back plate assembly; the light-emitting part is arranged on the mounting frame or the back plate assembly; a plurality of light blocking pieces which are arranged at intervals are arranged between the back plate assembly and the light emitting plate, and the light blocking pieces are obliquely arranged relative to the back plate assembly; wherein part of light emitted by the light emitting piece is shielded by the light blocking pieces, and the rest part of the light is emitted to the light emitting plate from the position between the two adjacent light blocking pieces. According to the technical scheme, the light blocking piece is arranged to change the emergent light path of the light emitting part, and the thinning design of the lighting device can be achieved.

Description

Technical Field

[0001] This application relates to the field of lighting technology, and in particular to a lighting device, a refrigerator, and a control method thereof. Background Technology

[0002] Among related technologies, there are many types of lighting devices, and the blue sky lamp, as a new type of decorative lighting device, utilizes the Rayleigh scattering principle to scatter blue light and produce a sky-blue effect. This scattering effect simulates the interaction between short-wavelength light (such as blue light) and atmospheric molecules, thus presenting a blue sky effect. It can provide people with a comfortable lighting environment, making them feel relaxed and happy.

[0003] In related technologies, the light source of the blue sky lamp needs to be at a sufficient distance for Rayleigh scattering, which makes the overall blue sky lamp relatively thick. Summary of the Invention

[0004] This application provides a lighting device, a refrigerator, and a control method thereof, which can reduce the thickness of the lighting device.

[0005] In a first aspect, embodiments of this application provide a lighting device, which includes a mounting frame, a back panel assembly, a light-emitting plate, a light-emitting element, and a plurality of spaced-apart light-blocking plates; the back panel assembly is disposed on the back side of the mounting frame; the light-emitting plate is mounted on the front side of the mounting frame and is disposed opposite to the back panel assembly; the light-emitting element is disposed on the mounting frame or the back panel assembly; the plurality of spaced-apart light-blocking plates are disposed between the back panel assembly and the light-emitting plate, and the light-blocking plates are inclined relative to the back panel assembly; wherein, part of the light emitted by the light-emitting element is blocked by the light-blocking plates, and the remaining part is emitted from between two adjacent light-blocking plates to the light-emitting plate.

[0006] In some embodiments, the light-blocking sheet includes a light-receiving surface and a backlighting surface disposed opposite to each other. The light-receiving surface is disposed facing the back panel assembly, and a portion of the light emitted by the light-emitting element is blocked by the light-blocking sheet to form a light-blocking area on the side facing the backlighting surface.

[0007] In some embodiments, the light-blocking sheet satisfies at least one of the following conditions:

[0008] The light-blocking sheet is an opaque component as a whole;

[0009] A reflective layer or a light-absorbing layer is provided on the light-receiving surface;

[0010] The light-blocking sheet is a light-transmitting component as a whole, and the backlight surface is provided with a reflective layer or a light-absorbing layer.

[0011] In some embodiments, the light-absorbing layer is a black coating.

[0012] In some embodiments, the light-blocking sheet has a first end relatively close to the back panel assembly and a second end relatively close to the light-emitting plate;

[0013] The two adjacent light-blocking sheets are respectively the first light-blocking sheet and the second light-blocking sheet. The first light-blocking sheet and the second light-blocking sheet are arranged sequentially in the front-back direction. The line connecting the first end of the first light-blocking sheet and the second end of the second light-blocking sheet is the first connecting line. The first connecting line and the portion of the back panel assembly located between the first light-blocking sheet and the second light-blocking sheet have an angle α1, where α1 is greater than 0 degrees and less than or equal to 120 degrees.

[0014] In some embodiments, the line connecting the second end of the first light-blocking sheet and the first end of the second light-blocking sheet is a second line, and the second line has an included angle α2 with the portion of the back panel assembly facing the light-receiving surface of the second light-blocking sheet, wherein α2 is greater than 0 degrees and less than or equal to 120 degrees.

[0015] In some embodiments, the light-emitting plate is a Rayleigh scattering plate.

[0016] In some embodiments, the light-emitting element is mounted on the side of the mounting frame or the backplate assembly, the backplate assembly comprising:

[0017] Reflector;

[0018] A first light-diffusing plate is attached to the side of the reflector facing the light-emitting plate; and

[0019] The first diffuser plate is attached to the side of the first light-diffusing plate facing the light-emitting plate.

[0020] In some embodiments, the backplane assembly includes:

[0021] A clamping frame clamps the reflector and the first diffuser along the thickness direction of the back panel assembly, and the clamping frame is located at least on opposite sides of the reflector and the first diffuser.

[0022] In some embodiments, the clamping frame includes:

[0023] The first clamp plate abuts against the reflector;

[0024] The connecting plate, with its top end connected to the first clamping plate; and

[0025] The second clamping plate abuts against the first diffuser plate and is connected to the bottom end of the connecting plate;

[0026] The first clamping plate, the connecting plate, and the second clamping plate form a clamping space. Parts of the reflector, the first light-diffusing plate, and the first diffuser are located within the clamping space. The light-emitting element is located within the clamping space and is installed on the side of the connecting plate facing the first light-diffusing plate.

[0027] In some embodiments, the light-emitting element is mounted on the side of the backplate assembly facing the light-emitting plate, and the light-emitting element includes an LED matrix.

[0028] In some embodiments, the backplane assembly includes:

[0029] A second light-diffusing plate is connected to the mounting frame; and

[0030] The second diffuser plate is attached to the side of the second light-diffusing plate facing the light-emitting plate.

[0031] In some embodiments, the mounting frame includes:

[0032] The outer frame is connected to the back panel assembly and the light-emitting plate; and

[0033] An inner frame is disposed inside the outer frame, and the light-blocking sheet is mounted on the inner frame.

[0034] In some embodiments, the two ends of the light-blocking plate along its length are rotatably connected to the mounting frame.

[0035] Secondly, embodiments of this application provide a refrigerator, which includes: a cabinet, a door, and a lighting device as described in any of the above; the cabinet has an opening; the door is movably connected to the cabinet and is used to open or close the opening; the lighting device is disposed inside the cabinet.

[0036] In some embodiments, the refrigerator further includes:

[0037] A sensor, disposed on the housing and / or the door, is used to detect the opening and closing actions of the door and generate a corresponding door opening / closing detection signal. The opening and closing actions include an opening action when the door opens the opening, and a closing action when the door closes the opening.

[0038] The controller is electrically connected to both the sensor and the light-emitting element of the lighting device to control the operating state of the light-emitting element according to the door opening / closing detection signal.

[0039] Thirdly, this application provides a refrigerator control method for a refrigerator as described above. The control method includes: detecting the opening and closing action of the door, wherein the opening and closing action includes an opening action when the door opens the opening and a closing action when the door closes the opening.

[0040] When the opening action is detected, the color temperature of the light-emitting element is controlled to gradually increase from the first color temperature to the second color temperature, and the brightness of the light-emitting element is controlled to gradually increase from the off state to the predetermined brightness.

[0041] When the shutdown action is detected, the color temperature of the light-emitting element is controlled to gradually decrease from the second color temperature to the first color temperature, and the brightness of the light-emitting element is controlled to gradually decrease from the predetermined brightness to the off state.

[0042] The lighting device based on the embodiments of this application employs multiple spaced light-blocking plates disposed between the back panel assembly and the light-emitting plate, with the light-blocking plates being inclined relative to the back panel assembly. Part of the light emitted by the light-emitting element is blocked by the light-blocking plates, while the remaining part is emitted from between two adjacent light-blocking plates to the light-emitting plate. This creates an angle between the light emitted by the light-emitting element and the light-emitting plate, thereby determining the propagation path of the light emitted by the light-emitting element. This allows the light to be emitted from the light-emitting plate at a relatively oblique angle, avoiding direct exposure to the human eye and improving the user experience.

[0043] Furthermore, the multiple light-blocking plates, which are tilted relative to the back panel assembly, can limit most of the light to be emitted from the light-emitting plate at a relatively tilted angle, reducing the amount of light emitted directly from the light-emitting plate. This reduces the possibility of uneven light spots or bright spots caused by light directly hitting the light-emitting plate, and helps to form a more uniform lighting effect. This makes the light emitted by the lighting device softer and more natural, and allows the light to be more evenly scattered when passing through the light-emitting plate, providing a more comfortable visual experience.

[0044] By using multiple light-blocking plates spaced at intervals, and with the light-blocking plates tilted relative to the back panel assembly, it is possible to ensure that the light emitted by the light-emitting element can be obliquely emitted to the light-emitting plate, thereby increasing the path length of the light between the back panel assembly and the light-emitting plate. This reduces the distance between the back panel assembly and the light-emitting plate, thereby reducing the overall thickness of the lighting device and achieving a thinner design for the lighting device to better adapt to different installation environments and also reduce manufacturing costs. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of an embodiment of the lighting device of this application installed inside a refrigerator;

[0047] Figure 2 This is a schematic diagram of the structure of an embodiment of the lighting device of this application.

[0048] Figure 3 for Figure 2 The diagram shows an exploded view of the lighting device.

[0049] Figure 4 for Figure 2 The diagram shows a cross-sectional view of the lighting device along section AA.

[0050] Figure 5 for Figure 4 The enlarged schematic diagram at point B shown in the image;

[0051] Figure 6 for Figure 4 An enlarged schematic diagram of point C shown in the image;

[0052] Figure 7 This is a partial cross-sectional structural schematic diagram of another embodiment of the lighting device of this application;

[0053] Figure 8 for Figure 1 The flowchart of the refrigerator control method is shown in the figure.

[0054] Explanation of icon numbers:

[0055] 100. Lighting device; 10. Mounting frame; 11. Outer frame; 12. Inner frame; 20. Back panel assembly; 21. Reflector; 22. First light diffuser; 23. First diffuser; 24. Clamping frame; 241. First clamping plate; 242. Connecting plate; 243. Second clamping plate; 244. Clamping space; 30. Light-emitting plate; 40. Light-emitting element; 50. Light-blocking plate; 51. Light-receiving surface; 52. Backlighting surface; 53. First end; 54. Second end; 501. First light-blocking plate; 502. Second light-blocking plate; 200. Housing; 210. Opening; 1000. Refrigerator.

[0056] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0058] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0059] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0061] There are many types of lighting devices, and the blue sky light, as a new type of decorative lighting device, utilizes the Rayleigh scattering principle to scatter blue light and produce a sky-blue effect. This scattering effect simulates the interaction between short-wavelength light (such as blue light) and atmospheric molecules, thus presenting a blue sky effect. It can provide people with a comfortable lighting environment, making them feel relaxed and happy.

[0062] In related technologies, the light source of the blue sky lamp needs to be at a sufficient distance for Rayleigh scattering, which makes the overall blue sky lamp relatively thick.

[0063] To resolve the above issues, please refer to [link / reference]. Figures 1 to 3 This application proposes a lighting device 100. In the embodiments of this application, the lighting device 100 includes a mounting frame 10, a back panel assembly 20, a light-emitting plate 30, a light-emitting element 40, and a plurality of light-blocking sheets 50 arranged at intervals.

[0064] The mounting frame 10 is a frame structure used to support components such as the back panel assembly 20, the light-emitting plate 30, and the light-emitting element 40. Therefore, it needs to have high material strength, such as aluminum alloy or stainless steel. The mounting frame 10 has internal space for installing the light-blocking plate 50. The mounting frame 10 also serves to mount the lighting device 100 to the installation environment, such as the ceiling. In actual installation, when the lighting device 100 is installed within the installation environment, such as on an indoor ceiling, the mounting frame 10 can be recessed into the ceiling to avoid encroaching on the indoor space below the ceiling. Therefore, the overall thickness of the lighting device 100 is reduced, making it easier to adapt to different installation environments and better meet user needs. Furthermore, since the light emitted by the lighting device 100 needs to be diffused to better simulate the effect of the sky, the lighting device 100 can be installed near a corner to direct the light onto the wall. The diffuse reflection of the light on the wall further enhances the user's visual experience.

[0065] Please refer to Figure 1 In some embodiments, when the lighting device 100 is installed inside an appliance such as a refrigerator 1000, the lighting device 100 can be installed on the top or side wall inside the refrigerator 1000. However, since the installation space inside the refrigerator 1000 is limited, and other items and electronic components inside the refrigerator 1000 need to be taken into account, the thickness of the lighting device 100 needs to be made thinner to better fit inside the appliance such as the refrigerator 1000.

[0066] The back panel assembly 20 is disposed on the back side of the mounting frame 10. It should be noted that the back side of the mounting frame 10 is the backlight side of the lighting device 100, and is disposed opposite to the light-emitting side of the lighting device 100. The connection between the back panel assembly 20 and the mounting frame 10 can be a fixed connection, such as welding or bonding, to enhance the overall structural strength of the lighting device 100. Of course, the connection between the back panel assembly 20 and the mounting frame 10 can also be a detachable connection, such as screwing or snap-fitting. In this way, the components inside the mounting frame 10 can be cleaned and maintained by disassembling the back panel assembly 20, thereby ensuring the light emission effect.

[0067] In some embodiments, to prevent light from leaking from the back side of the mounting frame 10, the side of the back panel assembly 20 opposite to the light-emitting plate 30 may be coated with a light-absorbing material, or it may be a black coating. Of course, the back panel assembly 20 as a whole may also be made of an opaque material, such as an alloy metal or other materials that do not transmit light. This can block the light emitted by the light-emitting element 40 from the back side of the mounting frame 10, ensuring sufficient light within the mounting frame 10, and thus allowing more light to be emitted from the light-emitting plate 30, thereby ensuring that the lighting device 100 has a better lighting effect.

[0068] The light-emitting plate 30 is mounted on the front side of the mounting frame 10. It should be noted that the front side of the mounting frame 10 is the light-emitting side of the lighting device 100, and is positioned opposite to the backlight side of the lighting device 100. The light-emitting plate 30 is positioned opposite to the back panel assembly 20. The light-emitting plate 30 can be a Rayleigh scattering plate. When the light emitted by the light-emitting element 40 reaches the light-emitting plate 30, a blue sky effect can be achieved through Rayleigh scattering. Rayleigh scattering is an optical phenomenon. Its principle is that scattering occurs when light waves encounter obstacles (such as atmospheric molecules) with wavelengths much smaller than the light wave. The intensity of Rayleigh scattering is inversely proportional to the fourth power of the wavelength of the light wave. This means that shorter wavelength light (such as blue light) is scattered more strongly than longer wavelength light (such as red light). This phenomenon explains why a clear sky appears blue and why the sky appears red at sunset.

[0069] The Rayleigh scattering plate contains tiny particles, such as titanium dioxide nanoparticles. When white light emitted by the light-emitting element 40 is emitted to the Rayleigh scattering plate, the titanium dioxide nanoparticles scatter the blue light portion of the light, thus creating a blue effect on the surface of the light-emitting plate 30. The light that is actually transmitted through the light-emitting plate 30 is still white light, thereby simulating the effect of the sun passing through the atmosphere under sunlight.

[0070] Rayleigh diffusers typically need to be of a certain thickness to more effectively simulate the scattering effect of the atmosphere. By adjusting the thickness and particle concentration of the diffuser, the intensity and distribution of scattered light can be controlled, thereby achieving a more natural sky blue effect. This not only provides users with a more comfortable lighting environment but also helps to improve the user experience.

[0071] The light-emitting element 40 is disposed on the mounting frame 10 or the back panel assembly 20. The light-emitting element 40 serves as a light source and can provide light to the light-blocking sheet 50 and the light-emitting plate 30.

[0072] Please see Figures 3 to 5 There are multiple light-blocking plates 50, that is, two or more light-blocking plates 50 are arranged at intervals and are located between the back panel assembly 20 and the light-emitting plate 30. The light-blocking plates 50 are inclined relative to the back panel assembly 20. Part of the light emitted by the light-emitting element 40 is blocked by the light-blocking plates 50, and the rest is emitted from between two adjacent light-blocking plates 50 to the light-emitting plate 30. This limits the propagation path of the light emitted by the light-emitting element 40, so that the light is emitted from the light-emitting plate 30 at a relatively oblique angle, avoiding direct exposure to the eyes and improving the user experience.

[0073] And, as Figure 4As shown, the multiple light-blocking plates 50 arranged at an angle can limit most of the light to be emitted from the light-emitting plate 30 at a relatively angle, reducing the amount of light emitted directly from the light-emitting plate 30. This reduces the possibility of uneven light spots or bright spots caused by light directly hitting the light-emitting plate 30, and helps to form a more uniform lighting effect. This makes the light emitted by the lighting device 100 softer and more natural, and allows the light to be scattered more evenly when passing through the light-emitting plate 30, providing a more comfortable visual experience. The angled light also increases the path length between the back panel assembly 20 and the light-emitting plate 30, giving the light more opportunities to interact with the nanoparticles in the light-emitting plate 30, thereby enhancing the scattering effect, making the simulated sky color more realistic and deep, and providing better light uniformity and softness, reducing direct light reflection and glare, and providing a more comfortable visual experience.

[0074] By using multiple light-blocking plates 50 spaced apart and inclined relative to the back panel assembly 20, it is possible to ensure that the light emitted by the light-emitting element 40 can be obliquely emitted to the light-emitting plate 30, thereby increasing the path length of the light between the back panel assembly 20 and the light-emitting plate, thus reducing the distance between the back panel assembly 20 and the light-emitting plate 30, and consequently reducing the overall thickness of the lighting device 100. In a specific embodiment of this application, the overall thickness of the lighting device 100 can be less than or equal to 5 cm, achieving a thinner design for the lighting device 100 to better adapt to different installation environments and reduce manufacturing costs.

[0075] In some embodiments, the light-blocking plates 50 are spaced apart from the light-emitting plate 30. This prevents light from escaping directly from the light-emitting plate 30 after passing between two adjacent light-blocking plates 50, thus avoiding glare and affecting visual comfort. The spacing between the light-blocking plates 50 and the light-emitting plate 30 improves the uniform distribution of light on the light-emitting plate 30, resulting in a more natural and uniform lighting effect. It also ensures that the light is sufficiently diffused before reaching the user, thereby reducing glare.

[0076] In the structure where the light-blocking plate 50 is fixedly connected to the mounting frame 10, the mounting frame 10 also includes an outer frame 11 and an inner frame 12. The outer frame 11 is connected to the back panel assembly 20 and the light-emitting plate 30, and the inner frame 12 is located inside the outer frame 11. The light-blocking plate 50 is mounted on the inner frame 12. Thus, the outer frame 11 can limit and fix the back panel assembly 20 and the light-emitting plate 30 in the lateral direction, avoiding light leakage in the lateral direction, improving structural strength, and preventing displacement between the back panel assembly 20 and the light-emitting plate 30, which would cause optical path deviation. The two ends of the light-blocking plate 50 in the length direction can be connected to the inner frame 12 respectively, thereby preventing one end of the light-blocking plate 50 in the length direction from rotating, which would cause uneven light when light passes between two adjacent light-blocking plates 50. Furthermore, the light-blocking plate 50 can also be inserted through the inner frame 12, thereby further limiting the light-blocking plate 50 and preventing the light-blocking plate 50 from accidentally twisting.

[0077] In some embodiments, the light-blocking sheet 50 includes a light-receiving surface 51 and a backlighting surface 52 disposed opposite to each other. The light-receiving surface 51 is disposed toward the back panel assembly 20. A portion of the light emitted by the light-emitting element 40 is blocked by the light-blocking sheet 50 to form a light-blocking area on the side facing the backlighting surface 52, thereby preventing direct light from shining into the eyes. This allows the user to obtain a better visual effect when observing from the side where the light-blocking area is formed.

[0078] The light-blocking sheet 50 meets at least one of the following conditions: the light-blocking sheet 50 is entirely opaque; a reflective layer or a light-absorbing layer is provided on the light-receiving surface 51; or the light-blocking sheet 50 is entirely translucent, and a reflective layer or a light-absorbing layer is provided on the backlight surface 52. This prevents multiple light-blocking sheets 50 from being directly illuminated by light and forming bright spots that affect the visual effect. It should be noted that in actual use, since the backlight surface 52 faces the light-emitting plate 30, the side facing the backlight surface 52 constitutes a light-shielding area. That is, the backlight surface 52 is the side of the light-blocking sheet facing the user. Therefore, the backlight surface 52 needs to be designed to be opaque to avoid glare.

[0079] When the light-blocking sheet 50 is an opaque part as a whole, that is, the light-blocking sheet 50 can be made of a non-transparent material, such as aluminum alloy or other metal materials, light cannot pass through the light-blocking sheet 50. This can prevent light from shining through the light-blocking sheet 50 and forming bright spots, thereby improving the user experience.

[0080] When a reflective layer or a light-absorbing layer is provided on the light-receiving surface 51 of the light-blocking sheet 50, the reflective layer or the light-absorbing layer can be achieved by coating a coating with reflective or light-absorbing effects on the light-receiving surface 51 through a surface treatment process.

[0081] When the light-blocking sheet 50 is a light-transmitting component, that is, the light-blocking sheet 50 can be made of a light-transmitting material, such as plastic or glass, and the backlight surface 52 is provided with a reflective layer or a light-absorbing layer, it can be ensured that no bright spots are formed on the side of the light-blocking sheet 50 facing the light-emitting plate 30.

[0082] Furthermore, the light-absorbing layer is a black coating, for example, a matte black light-absorbing coating, to give the light-absorbing layer a matte black effect and achieve effective light absorption; alternatively, the light-absorbing layer can also be a black light-absorbing flocked fabric attached to the light-receiving surface 51 or the backlight surface 52, which can absorb reflected stray light to achieve the light absorption effect. It should be noted that the form of the light-absorbing layer can also be other forms, and this application does not limit it.

[0083] Please refer to Figures 3 to 5 In some embodiments, the light-blocking sheet 50 has a first end 53 relatively close to the back panel assembly 20 and a second end 54 relatively close to the light-emitting plate 30. Two adjacent light-blocking sheets 50 are respectively a first light-blocking sheet 501 and a second light-blocking sheet 502, which are arranged sequentially in the front-rear direction. The line connecting the first end 53 of the first light-blocking sheet 501 and the second end 54 of the second light-blocking sheet 502 is a first connecting line, such as... Figure 6 As shown in dashed box a, the first connecting line and the portion of the back panel assembly 20 located at the first light-blocking plate 501 and the second light-blocking plate 502 form an angle α1, where α1 is greater than 0 degrees and less than or equal to 120 degrees. The connecting line between the second end 54 of the first light-blocking plate 501 and the first end 53 of the second light-blocking plate 502 is the second connecting line, as shown in the dashed box a. Figure 6 As shown in dashed box b, the second connecting line and the portion of the back panel assembly 20 facing the light-receiving surface 51 of the second light-blocking sheet 502 form an angle α2, where α2 is greater than 0 degrees and less than or equal to 120 degrees. That is, the values ​​of α1 and α2 can be 30 degrees, 45 degrees, 90 degrees, or 120 degrees, etc. This arrangement ensures that multiple light-blocking sheets 50 are spaced apart along the length of the back panel assembly 20 and are inclined relative to the back panel assembly 20. In other words, the multiple light-blocking sheets 50 are not parallel to the back panel assembly 20, ensuring that each light-blocking sheet 50 forms an angle with the back panel assembly 20. This ensures that the light is emitted from between adjacent light-blocking sheets 50 towards the light-emitting plate 30 at a relatively oblique angle, thereby avoiding direct sunlight on the eyes and improving the user experience.

[0084] It is understandable that, such as Figure 5As shown, there is also an angle α3 between the first connecting line and the light-emitting plate 30. The angle α3 is greater than or equal to 60 degrees, which ensures that the light-shielding area has a certain coverage range. When the values ​​of α1 and α2 are smaller, the value of α3 is larger. At this time, the light-shielding area has a larger range, which further reduces the direct light and glare, making the light softer. In practical applications, a larger light-shielding area can reduce the brightness of the lighting device 100, reduce the stimulation of light to the user's eyes, provide a more comfortable lighting environment for the user, and improve the user experience.

[0085] Furthermore, the smaller the values ​​of α1 and α2, the smaller the projected area of ​​the light-blocking plate 50 in the lateral direction of the mounting frame 10 will be. This can further reduce the distance between the back panel assembly 20 and the light-emitting plate 30, thereby reducing the overall thickness of the lighting device 100 and the installation space occupied by the lighting device 100, so as to better adapt to different installation environments. At the same time, the thinner lighting device 100 is also lighter and easier to transport and install, and can also reduce the material cost in the manufacturing process.

[0086] It should be noted that the included angles α1 and α2 can also be equal to 90 degrees at the same time. In this case, the first light-blocking plate 501 and the second light-blocking plate 502 are both set perpendicular to the back panel assembly 20, and the first light-blocking plate 501 and the second light-blocking plate 502 are set parallel to each other. When the light emitted by the light-emitting element 40 is emitted from between the two adjacent light-blocking plates 50 to the light-emitting plate 30, it will be emitted perpendicularly from the light-emitting plate 30. Similarly, a light-shielding area can be formed on the front side of the light-emitting plate 30 to prevent the light from shining directly into people's eyes, providing users with a more comfortable lighting environment and improving the user experience.

[0087] Therefore, on the side of the light-emitting plate 30 away from the back plate assembly 20, the first line and the second line form a light-emitting area. Since multiple light-blocking plates 50 are arranged at intervals, the light-blocking area and the light-emitting area interfere with each other. The light intensity is enhanced at the position where the interference is constructive and weakened at the position where the interference is destructive. Thus, the light does not shine directly into the eyes and the brightness of the light is guaranteed at the same time.

[0088] Furthermore, multiple light-blocking plates 50 can be arranged parallel to each other, i.e., α1 equals α2. This creates a more uniform optical path for the light emitted by the light-emitting element 40, reducing or eliminating light interference caused by direct or reflected light from the light source, controlling the uniform emission of the beam, thereby improving the optical effect and providing users with a softer and more comfortable viewing experience. Moreover, the amount of light emitted from between two adjacent light-blocking plates 50 can be adjusted by changing the distance between them, thus allowing different light amounts to be emitted to the light-emitting plate 30 to adapt to different viewing needs and improve the user experience. In other words, the distance between two adjacent light-blocking plates 50 can be the same or different.

[0089] like Figure 7 The schematic diagram of a partial cross-sectional structure of the lighting device 100 shown illustrates a configuration where the light-emitting element 40 is mounted on the side of the mounting frame 10 or the back panel assembly 20. This avoids obstructing the mounting space between the back panel assembly 20 and the light-emitting plate 30, thereby achieving a thinner lighting device 100. When the light-emitting element 40 is mounted on the side of the mounting frame 10, the back panel assembly 20 includes a reflector 21, a first light-diffusing plate 22, and a first diffuser plate 23. The first light-diffusing plate 22 is attached to the side of the reflector 21 facing the light-emitting plate 30, and the first diffuser plate 23 is attached to the side of the first light-diffusing plate 22 facing the light-emitting plate 30. The light-emitting element 40 is in contact with the side of the first light-diffusing plate 22 to direct more of the emitted light toward the first light-diffusing plate 22, preventing light leakage between the light-emitting element 40 and the back panel assembly 20.

[0090] The reflector 21 is used to reflect the light emitted by the light-emitting element 40 to the front side of the mounting frame 10, ensuring that the light can be uniformly reflected to the entire first light-diffusing plate 22, thereby improving the light utilization rate and brightness. The first light-diffusing plate 22 utilizes the principle of light refraction and reflection. By adding a light-diffusing agent to the substrate or through the array arrangement of micro-feature structures, the light undergoes refraction, reflection, and scattering in different directions during its journey, thereby changing the light's path and achieving an optical diffusion effect. This converts the point light source or line light source reflected by the reflector 21 into a more uniform surface light source, which is then directed towards the diffuser plate 23. The diffuser plate 23 uses chemical or physical means, such as adding inorganic or organic light-diffusing agents, or through the array arrangement of micro-feature structures on the substrate surface, to cause light to refract, reflect, and scatter, allowing the incident light to be fully scattered, achieving a softer and more uniform illumination effect and preventing glare. The light emitted from the diffuser plate 23 is emitted between two adjacent light-blocking plates 50 and then exits through the light-emitting plate 30.

[0091] The light-emitting element 40 is mounted on the side of the mounting frame 10. The back panel assembly 20 includes a clamping frame 24, which clamps the reflector 21 and the first diffuser 23 along the thickness direction of the back panel assembly 20. The clamping frame 24 is located at least on opposite sides of the reflector 21 and the first diffuser 23. This makes the reflector 21, the first diffuser 22, and the first diffuser 23 fit together more closely, and also makes the side of the light-emitting element 40 fit more tightly with the side of the first diffuser 22, further preventing light leakage. The clamping frame 24 can be made of metal materials such as aluminum alloy or stainless steel to further improve the overall structural strength. The clamping frame 24 can also be made of a plastic material to achieve overall lightweighting of the lighting device 100.

[0092] Specifically, the clamping frame 24 includes a first clamping plate 241, a connecting plate 242, and a second clamping plate 243. The first clamping plate 241 abuts against the reflector 21, the top of the connecting plate 242 is connected to the first clamping plate 241, and the second clamping plate 243 abuts against the first diffuser 23 and is connected to the bottom of the connecting plate 242. The first clamping plate 241, the connecting plate 242, and the second clamping plate 243 together form a clamping space 244. Parts of the reflector 21, the first diffuser 22, and the first diffuser 23 are located within the clamping space 244. The light-emitting element 40 is located within the clamping space 244 and is installed on the side of the connecting plate 242 facing the first diffuser 22. Thus, the light-emitting element 40 is enclosed by the clamping frame 24 within the clamping space 244 to improve airtightness and prevent light leakage.

[0093] The clamping frame 24 ensures that the light emitted by the light-emitting element 40 cannot leak out through the clamping frame 24, greatly reducing the impact of insufficient light caused by light leakage. Furthermore, the first clamping plate 241 abuts against the reflector 21, and the second clamping plate 243 abuts against the first diffuser plate 23. This ensures a tighter fit between the light-emitting element 40 and the backplate assembly 20 on the side of the mounting frame 10, allowing the light to be concentrated within the clamping space 244 before emission, further preventing light leakage from the side and ensuring optimal light emission. In addition, the portions of the first clamping plate 241 and the second clamping plate 243 that abut against the reflector 21 and the first diffuser plate 23, respectively, can be relatively protruding to enhance connection strength, thereby improving the overall integrity and stability of the structure.

[0094] In another structural form, the light-emitting element 40 is mounted on the side of the back panel assembly 20 facing the light-emitting plate 30, and the light-emitting element 40 includes an LED matrix. The LED matrix is ​​an array composed of multiple LEDs that can provide high-brightness light. The brightness can be adjusted as needed, reducing energy waste, and has a long service life, reducing replacement frequency and maintenance costs. In this case, the back panel assembly 20 includes a second light-diffusing plate and a second light-diffusing plate. The second light-diffusing plate is connected to the mounting frame 10, and the second light-diffusing plate is attached to the side of the second light-diffusing plate facing the light-emitting plate 30. The light emitted by the light-emitting element 40 can be emitted from the second light-diffusing plate of the back panel assembly 20 to the second light-diffusing plate in the front-back direction of the mounting frame 10, and then emitted to the light-emitting plate 30, realizing a surface light source formed by the backlight. To ensure that the back of the light-emitting element 40 is opaque, a reflector can be provided on the back of the light-emitting element 40, thereby ensuring that more of the light emitted by the light-emitting element 40 is directed to the backlight assembly 20, reducing light leakage, ensuring light extraction rate, and further improving the light extraction effect.

[0095] In some embodiments, along the length of the light-blocking plate 50, both ends of the light-blocking plate 50 are rotatably connected to the mounting frame 10. This rotatable connection allows the light-blocking plate 50 to be dynamically adjusted, improving its flexibility. The angle of the light-blocking plate 50 can be adjusted according to usage requirements, allowing for adjustments to the direction and coverage of light to suit different user needs. Furthermore, the light-blocking plate 50 can be detachably connected to the mounting frame 10, facilitating cleaning and replacement to prevent dust and other impurities from adhering to the light-blocking plate 50 and affecting the light output effect.

[0096] It should be noted that the rotatable connection between the light-blocking plate 50 and the mounting frame 10 can be achieved by having a rotating shaft along the length of the light-blocking plate 50, connecting the light-blocking plate 50 to the rotating shaft, and having bearings at both ends of the rotating shaft connected to the mounting frame 10. Rotation of the rotating shaft drives the light-blocking plate 50 to rotate, thereby achieving the rotatable connection between the light-blocking plate 50 and the mounting frame 10. Alternatively, the light-blocking plate and the mounting frame 10 can be connected by hinges at both ends along its length, or the rotation and positioning of the light-blocking plate 50 can be controlled by sliding grooves and rollers. This application does not limit the rotatable connection method between the light-blocking plate 50 and the mounting frame 10.

[0097] Please refer to this again. Figures 1 to 3 This application also proposes a refrigerator 1000, which includes, but is not limited to, a single-door refrigerator 1000, a double-door refrigerator 1000, or a double-door refrigerator 1000. The refrigerator 1000 includes a cabinet 200, a door (not shown in the figure), and the aforementioned lighting device 100. The cabinet 200 has an opening 210, and the door is movably connected to the cabinet 200 and is used to open or close the opening 210. The lighting device 100 is disposed inside the cabinet 200.

[0098] It should be noted that, depending on the usage requirements, the refrigerator 1000 is equipped with a refrigerator compartment and a freezer compartment. The refrigerator compartment has a first temperature, and the freezer compartment has a second temperature. The first temperature is higher than the second temperature, and the second temperature is less than 0 degrees Celsius. When the lighting device 100 is installed inside the cabinet 200, it can be installed in the refrigerator compartment or the freezer compartment. When the lighting device 100 is installed in the freezer compartment, since the second temperature is lower than the first temperature and is in the temperature range where freezing is likely to occur, the mounting frame 10 of the lighting device 10 needs to have a good antifreeze effect to better protect the various functional components inside the mounting frame 10.

[0099] Furthermore, when the lighting device 100 is installed inside the cabinet 200, it can be installed on the top of the cabinet 200 or on the side of the cabinet 200. During the specific installation process, it is necessary to ensure that the light-blocking area is located on the side of the opening 210 of the refrigerator 1000, that is, the back light surface 52 of the light-blocking sheet 50 is set facing the opening 210, so that the light emitted by the lighting device 100 will not shine directly into people's eyes when the user opens the door.

[0100] The refrigerator 1000 also includes sensors and a controller. The sensors can be installed on the cabinet 200 and the door, or on either the cabinet 200 or the door. They are used to detect the opening and closing actions of the door and generate corresponding door opening and closing detection signals. The opening and closing actions include the opening action when the door opens the opening 210 and the closing action when the door closes the opening 210. The controller is electrically connected to both the sensors and the light-emitting element 40 of the lighting device 100 to control the working state of the light-emitting element 40 according to the door opening and closing detection signals.

[0101] The sensor can be a Hall sensor, which, based on the Hall effect, converts a changing magnetic field into a change in output voltage. In this case, magnetic components are installed on the door and cabinet 200 to better seal the cabinet 200 when the door is closed (opening 210), preventing cold air leakage from the refrigerator 1000. The Hall sensor detects the high and low voltage generated when the magnetic components on the door approach or move away to determine the open / closed state of the refrigerator 1000 door. Hall sensors offer high sensitivity, precise control hysteresis, high safety and reliability, and a small size, saving installation space.

[0102] Of course, the sensor can also be an inductive sensor, which can be used as a button-type touch device or a precision linear sensor for proximity sensing to detect minute shifts in conductive targets. The advantages of these sensors include no need for drilling or opening, multi-functional buttons, insensitivity to environmental conditions such as dirt, dust, oil, water, or magnets, and stable performance. This application does not limit the type of sensor.

[0103] Please see Figure 8 Based on the structure of the refrigerator 1000 described above, this application provides a control method for the refrigerator 1000, including the following steps:

[0104] Step S10: Detect the opening and closing action of the door, wherein the opening and closing action includes the opening action when the door opens the opening 210 and the closing action when the door closes the opening 210.

[0105] Step S20: When the sensor detects the opening action, control the color temperature of the light-emitting element 40 to gradually increase from the first color temperature to the second color temperature, and control the brightness of the light-emitting element 40 to gradually increase from the off state to the predetermined brightness.

[0106] Step S30: When the off action is detected, the color temperature of the light-emitting element 40 is controlled to gradually decrease from the second color temperature to the first color temperature, and the brightness of the light-emitting element 40 is controlled to gradually decrease from the predetermined brightness to the off state.

[0107] This setup eliminates the need for users to manually adjust the switching and color temperature of the lighting device 100, making it more convenient for users and thus improving the user experience.

[0108] Color temperature is usually expressed in Kelvin (K). The lower the value, the warmer the light; the higher the value, the cooler the light. The first color temperature is lower than the second color temperature. The first color temperature can be low, that is, below 3000K, which can provide users with a more comfortable and gradual light-off experience when the door is closed, avoiding the direct extinguishing of light with a high color temperature. The second color temperature can be high, that is, above 5000K, which can provide users with sufficient light when the door is opened, providing a clear visual environment, making it easier for users to observe the items inside the cabinet, providing a better visual effect, and thus further enhancing the user experience.

[0109] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0110] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lighting device, characterized in that, include: Mounting frame; A backplate assembly is disposed on the back side of the mounting frame; A light-emitting plate is installed on the front side of the mounting frame and is disposed opposite to the back plate assembly; The light-emitting element is disposed on the mounting frame or the backplate assembly; and Multiple light-blocking sheets are spaced apart and disposed between the back panel assembly and the light-emitting plate, and the light-blocking sheets are inclined relative to the back panel assembly; In this process, part of the light emitted by the light-emitting element is blocked by the light-blocking sheet, while the remaining part is emitted from between two adjacent light-blocking sheets to the light-emitting plate.

2. The lighting device as claimed in claim 1, characterized in that, The light-blocking sheet includes a light-receiving surface and a backlighting surface arranged opposite to each other. The light-receiving surface is disposed facing the back panel assembly, and part of the light emitted by the light-emitting element is blocked by the light-blocking sheet to form a light-blocking area on the side facing the backlighting surface.

3. The lighting device as described in claim 2, characterized in that, The light-blocking sheet satisfies at least one of the following conditions: The light-blocking sheet is an opaque component as a whole; A reflective layer or a light-absorbing layer is provided on the light-receiving surface; The light-blocking sheet is a light-transmitting component as a whole, and the backlight surface is provided with a reflective layer or a light-absorbing layer.

4. The lighting device as described in claim 3, characterized in that, The light-absorbing layer is a black coating.

5. The lighting device as described in claim 2, characterized in that, The light-blocking sheet has a first end that is relatively close to the back panel assembly and a second end that is relatively close to the light-emitting plate; The two adjacent light-blocking sheets are respectively the first light-blocking sheet and the second light-blocking sheet. The first light-blocking sheet and the second light-blocking sheet are arranged sequentially in the front-back direction. The line connecting the first end of the first light-blocking sheet and the second end of the second light-blocking sheet is the first connecting line. The first connecting line and the portion of the back panel assembly located between the first light-blocking sheet and the second light-blocking sheet have an angle α1, where α1 is greater than 0 degrees and less than or equal to 120 degrees.

6. The lighting device as described in claim 5, characterized in that, The line connecting the second end of the first light-blocking sheet and the first end of the second light-blocking sheet is the second connecting line. The second connecting line has an angle α2 between it and the portion of the back panel assembly facing the light-receiving surface of the second light-blocking sheet. The α2 is greater than 0 degrees and less than or equal to 120 degrees.

7. The lighting device as claimed in claim 1, characterized in that, The light-emitting plate is a Rayleigh scattering plate.

8. The lighting device as claimed in claim 1, characterized in that, The light-emitting element is mounted on the side of the mounting frame or the backplate assembly, the backplate assembly comprising: Reflector; A first light-diffusing plate is attached to the side of the reflector facing the light-emitting plate; and The first diffuser plate is attached to the side of the first light-diffusing plate facing the light-emitting plate.

9. The lighting device as claimed in claim 8, characterized in that, The backplane assembly includes: A clamping frame clamps the reflector and the first diffuser along the thickness direction of the back panel assembly, and the clamping frame is located at least on opposite sides of the reflector and the first diffuser.

10. The lighting device as claimed in claim 9, characterized in that, The clamping frame includes: The first clamp plate abuts against the reflector; The connecting plate, with its top end connected to the first clamping plate; and The second clamping plate abuts against the first diffuser plate and is connected to the bottom end of the connecting plate; The first clamping plate, the connecting plate, and the second clamping plate form a clamping space. Parts of the reflector, the first light-diffusing plate, and the first diffuser are located within the clamping space. The light-emitting element is located within the clamping space and is installed on the side of the connecting plate facing the first light-diffusing plate.

11. The lighting device as claimed in claim 1, characterized in that, The light-emitting element is mounted on the side of the back panel assembly facing the light-emitting plate, and the light-emitting element includes an LED matrix.

12. The lighting device as claimed in claim 11, characterized in that, The backplane assembly includes: A second light-diffusing plate is connected to the mounting frame; and The second diffuser plate is attached to the side of the second light-diffusing plate facing the light-emitting plate.

13. The lighting device according to any one of claims 1 to 12, characterized in that, The mounting frame includes: The outer frame is connected to the back panel assembly and the light-emitting plate; and An inner frame is disposed inside the outer frame, and the light-blocking sheet is mounted on the inner frame.

14. The lighting device according to any one of claims 1 to 12, characterized in that, The light-blocking plate is rotatably connected to the mounting frame at both ends along its length.

15. A refrigerator, characterized in that, include: The box has an opening; The door is movably connected to the box body and is used to open or close the opening; as well as The lighting device as described in any one of claims 1 to 14, wherein the lighting device is disposed inside the housing.

16. The refrigerator as described in claim 15, characterized in that, The refrigerator also includes: A sensor, disposed on the housing and / or the door, is used to detect the opening and closing actions of the door and generate a corresponding door opening / closing detection signal. The opening and closing actions include an opening action when the door opens the opening, and a closing action when the door closes the opening. The controller is electrically connected to both the sensor and the light-emitting element of the lighting device to control the operating state of the light-emitting element according to the door opening / closing detection signal.

17. A method for controlling a refrigerator, characterized in that, Applied to the refrigerator as described in claim 15 or 16, the control method includes: The opening and closing actions of the door are detected, wherein the opening and closing actions include the opening action when the door opens the opening, and the closing action when the door closes the opening; When the opening action is detected, the color temperature of the light-emitting element is controlled to gradually increase from the first color temperature to the second color temperature, and the brightness of the light-emitting element is controlled to gradually increase from the off state to the predetermined brightness. When the shutdown action is detected, the color temperature of the light-emitting element is controlled to gradually decrease from the second color temperature to the first color temperature, and the brightness of the light-emitting element is controlled to gradually decrease from the predetermined brightness to the off state.

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