Backlight display device and electrical equipment applying same

Abstract

The utility model relates to the technical field of backlight display devices of electrical equipment, in particular to a backlight display device and electrical equipment applying the same, the backlight display device comprises a front shell, a main support, a first backlight assembly and a second backlight assembly, the first backlight assembly and the second backlight assembly are arranged between the front shell and the main support, and the backlight display device is installed in the electrical equipment through the front shell. The main support is arranged between the first backlight assembly and the second backlight assembly, the front face shell is provided with a display window, the main support is provided with a hollowed-out opening opposite to the display window, light emitted by the second backlight assembly penetrates through the hollowed-out opening, the first backlight assembly and the display window to be irradiated outwards, and light emitted by the first backlight assembly penetrates through the display window to be irradiated outwards. The double-layer light-emitting areas are formed at the display window through the first backlight assembly and the second backlight assembly respectively, so that the product brand mark emits light, the product brand mark is decorated through light emitted by the first backlight assembly, and the distinguishing degree and the attractiveness of a product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of backlight display device of electric appliance equipment especially relates to a backlight display device and the electric appliance equipment of using it. BACKGROUND

[0002] At present, the function button in electric appliance equipment can emit light generally, so that the user presses, but the nameplate or the merchant identification on the electric appliance appearance generally cannot emit light, generally directly silk screen electric appliance nameplate or merchant identification on the electric appliance shell, or print the nameplate or the merchant identification on the metal plate, then fix the metal plate and paste on the electric appliance shell, to show the merchant brand on the electric appliance appearance, the two kinds of nameplate or the merchant identification manufacturing method is difficult to reflect the product's identification on the electric appliance, thereby influence product's market competitiveness, and the nameplate or the merchant identification made by the above two methods is exposed on the electric appliance exterior, is easy to wear or fade, influence product's overall aesthetic degree.

[0003] The utility model discloses a backlight display device and the electric appliance equipment of using it are provided to solve the technical problem of the prior art. UTILITY MODEL CONTENT

[0004] The utility model discloses a backlight display device and the electric appliance equipment of using it are provided to solve the technical problem of the prior art.

[0005] The utility model discloses a backlight display device and the electric appliance equipment of using it are provided to solve the technical problem of the prior art.

[0006] A kind of backlight display device, including the front shell and main support of opposite arrangement, first backlight component being arranged between the front shell and the main support, second backlight component being arranged in the one side of the main support, the main support is arranged between the first backlight component and second backlight component, display window is arranged in the front shell, the main support is arranged with the hollow in the opposite of the display window, the light emitted by the second backlight component passes through the hollow, the first backlight component and the display window and shines outward, the light emitted by the first backlight component passes through the display window and shines outward.

[0007] A kind of backlight display device as described above, the first backlight component includes the first decorative plate being arranged between the front shell and the main support, first light source being arranged in the one side of the first decorative plate, the first decorative plate has the light transmission, the light emitted by the first light source is passed through the first decorative plate and the display window and shines outward.

[0008] The backlight display device as described above, the main support is provided with a mounting surface facing the front shell, the mounting surface is protruded to form an outward protruding part towards the front shell, and a step part is formed between the mounting surface and the outward protruding part, the first decorative plate is between the front shell and the outward protruding part, and the first light source is arranged on the periphery of the step part and close to the first decorative plate.

[0009] The backlight display device as described above, the second backlight assembly is arranged on the side of the outward protruding part away from the front shell, and the side of the main support away from the front shell is provided with a first mounting cavity capable of accommodating the second backlight assembly.

[0010] The backlight display device as described above, the second backlight assembly comprises a second decorative plate arranged on one side of the main support, and a second light source arranged on one side of the second decorative plate, the second light source is arranged along the periphery of the second decorative plate, the second decorative plate has light transmission, and an outward extending identification part is arranged on the side of the second decorative plate facing the main support, and the identification part is connected with the hollow opening in a corresponding and matching mode.

[0011] The backlight display device as described above, the second backlight assembly further comprises a diffusion plate arranged on the side of the second decorative plate away from the front shell, and the second light source is arranged on the periphery of the diffusion plate and close to the second decorative plate.

[0012] The backlight display device as described above, a light shielding support is further arranged between the second decorative plate and the main support, the light shielding support is detachably connected with the main support through an adhesive layer, the light shielding support is provided with a light transmission opening, a second mounting cavity communicated with the light transmission opening, and a light shielding part arranged on the periphery of the light transmission opening, the second mounting cavity is capable of accommodating the second decorative plate, the identification part passes through the light transmission opening and is connected with the hollow opening in a matching mode, and the second decorative plate abuts against the light shielding part.

[0013] The backlight display device as described above, the periphery of the main support is provided with an outward extending extension part, and the extension part is detachably connected with the front shell through a first connecting assembly.

[0014] The backlight display device as described above, the backlight display device further comprises a pressing plate arranged on the side of the second backlight assembly away from the front shell, and the pressing plate is detachably connected with the main support through a second connecting assembly.

[0015] In another aspect, the utility model further provides an electric appliance, comprising an electric appliance main body and the backlight display device as described above, and the backlight display device is installed in the electric appliance main body through the front shell.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1, through first backlight component and second backlight component respectively in display window place form double -deck's luminous area, to make product brand identification light, and through the light line of first backlight component emission decorates product brand identification, further optimization product brand identification's back light effect, to the advantage improves the discernibility and the aesthetic degree of electric appliance product of product brand identification;

[0018] 2, through setting the hollow in the main support, set the hollow as product brand identification related shape, again combine second backlight component and pass through the hollow light to make this product brand identification visual, compared with the traditional exposed type plaque or identification, the product brand identification formed in this embodiment of the utility model is not easy to wear or fade, also can be seen by people through the back light effect in the dark environment, has better durability, aesthetic degree and definition.

[0019] The utility model will be further described below in combination with the drawings and specific embodiment. DRAWINGS

[0020] Figure 1 It is the use state perspective drawing of the backlight display device of the utility model;

[0021] Figure 2 It is the back perspective drawing of the backlight display device of the utility model;

[0022] Figure 3 It is the exploded view of the backlight display device of the utility model Figure 1 ;

[0023] Figure 4 It is the exploded view of the backlight display device of the utility model Figure 2 ;

[0024] Figure 5 It is the connection schematic drawing of the first light source of the utility model one embodiment;

[0025] Figure 6 It is the A-A sectional view in Figure 1 ;

[0026] Figure 7 It is the B part enlarged view in Figure 6 ;

[0027] Figure 8 It is the C part enlarged view in Figure 2 . SPECIFIC EMBODIMENT

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figure 1 As shown in Figure 8, this utility model provides an electrical appliance, which includes at least a coffee machine and a coffee grinder. The electrical appliance includes an appliance body and a backlight display device. The backlight display device includes a front shell 1, a main support 2, a first backlight assembly 3, and a second backlight assembly 4. The backlight display device is installed in the appliance body through the front shell 1, which can be the outer casing of the electrical appliance. The front shell 1 and the main support 2 are arranged opposite to each other. The first backlight assembly 3 is located between the front shell 1 and the main support 2, and the second backlight assembly 4 is located on the other side of the main support 2. Located between the first backlight assembly 3 and the second backlight assembly 4, a display window 11 is provided in the front shell 1, and a cutout 21 opposite to the display window 11 is provided in the main bracket 2. The shape of the cutout 21 can be set according to elements such as the merchant's name, trademark, and brand. The shape of the cutout 21 includes any one of text, patterns, or a combination of text and patterns. The light emitted by the second backlight assembly 4 passes through the cutout 21, the first backlight assembly 3, and the display window 11 and shines outwards. The light emitted by the first backlight assembly 3 passes through the display window 11 and shines outwards. In actual use, such as Figure 1As shown, the light emitted by the second backlight assembly 4 passes through the hollow opening 21, the first backlight assembly 3 and the display window 11 to form an identification light-emitting area representing the product brand logo, wherein the main support 2 is light-shielding, i.e. the main support 2 is not transparent to light, so that the light emitted by the second backlight assembly 4 is only emitted through the hollow opening 21, thereby ensuring the backlight display effect of the identification light-emitting area and avoiding light leakage; the light emitted by the first backlight assembly 3 passes through the display window 11 to form a background light-emitting area for decorating the identification light-emitting area; the double-layer light-emitting areas are formed at the display window 11 by the first backlight assembly 3 and the second backlight assembly 4 respectively, so that the product brand logo is light-emitted and decorated by the light emitted by the first backlight assembly 3, thereby further optimizing the backlight effect of the product brand logo, facilitating to improve the recognition and aesthetic degree of the electrical product, and by setting the hollow opening 21 in the main support 2 and setting the hollow opening 21 in a shape related to the product brand logo, and in combination with the light emitted by the second backlight assembly 4 through the hollow opening 21 to make the product brand logo visible, compared with the traditional exposed nameplate or logo, the product brand logo formed by the hollow opening 21 in the embodiment is not easy to wear or fade, and can be seen by people in a dark environment through the backlight effect, having better durability, aesthetic degree and clarity.

[0032] Optionally, the first backlight assembly 3 and the second backlight assembly 4 can have different color or brightness of light-emitting effect, for example, the light color of the second backlight assembly 4 is brighter than that of the first backlight assembly 3, or the light brightness of the second backlight assembly 4 is brighter than that of the first backlight assembly 3, thereby facilitating to highlight the brand logo of the electrical product.

[0033] As shown in FIG. 2, the main support 2 is provided with a hollow opening 21, and the hollow opening 21 is arranged in a shape related to the product brand logo. Figure 1As shown in FIG. 7, the first backlight assembly 3 comprises a first decorative plate 31 arranged between the front shell 1 and the main support 2, and a first light source 32 arranged on one side of the first decorative plate 31. The first decorative plate 31 is light-transmissive, and the light emitted by the first light source 32 is emitted outwards through the first decorative plate 31 and the display window 11. Further, the main support 2 is provided with a mounting surface 22 facing the front shell 1. The mounting surface 22 is convex in the direction close to the front shell 1 to form an outer convex portion 23. The first decorative plate 31 is arranged between the front shell 1 and the outer convex portion 23, and the first light source 32 is arranged on the periphery of the outer convex portion 23 and close to the first decorative plate 31. Specifically, the areas of the outer convex portion 23 and the first decorative plate 31 are larger than the area of the display window 11. During assembly, the first decorative plate 31 is fixed between the outer convex portion 23 and the front shell 1, and covers the display window 11. On the other hand, the mounting surface 22 of the main support 2 is convex in the direction of the front shell 1 to form the outer convex portion 23, and a step portion 24 is formed between the mounting surface 22 and the outer convex portion 23. The first light source 32 is arranged along the step portion 24 and close to the first decorative plate 31. Preferably, the first light source 32 is a first light bar arranged along the step portion 24. The power line of the first light bar can be extended out of the gap between the front shell 1 and the main support 2 and connected to the circuit board of the electrical appliance, so that the first light bar can obtain power supply. By arranging the first light source 32 along the periphery of the outer convex portion 23 and close to the first decorative plate 31, the light emitted by the first light source 32 can be emitted into the first decorative plate 31 through the periphery of the first decorative plate 31, so that the first decorative plate 31 can be uniformly illuminated. The light emitted by the first light source 32 can be guided to the display window 11 through the first decorative plate 31, so as to be easily seen by people. In addition, the light outside the display window 11 is shielded by the front shell 1 to prevent light leakage. Optionally, the outer convex portion 23 can have a circular, polygonal or other regular or irregular shape. The first light bar is arranged along the periphery of the outer convex portion 23, so as to facilitate uniform illumination of the first decorative plate 31.

[0034] As a preferred embodiment of the present embodiment but not a limitation, as shown in FIG. 7, the first backlight assembly 3 comprises a first decorative plate 31 arranged between the front shell 1 and the main support 2, and a first light source 32 arranged on one side of the first decorative plate 31. The first decorative plate 31 is light-transmissive, and the light emitted by the first light source 32 is emitted outwards through the first decorative plate 31 and the display window 11. Further, the main support 2 is provided with a mounting surface 22 facing the front shell 1. The mounting surface 22 is convex in the direction close to the front shell 1 to form an outer convex portion 23. The first decorative plate 31 is arranged between the front shell 1 and the outer convex portion 23, and the first light source 32 is arranged on the periphery of the outer convex portion 23 and close to the first decorative plate 31. Specifically, the areas of the outer convex portion 23 and the first decorative plate 31 are larger than the area of the display window 11. During assembly, the first decorative plate 31 is fixed between the outer convex portion 23 and the front shell 1, and covers the display window 11. On the other hand, the mounting surface 22 of the main support 2 is convex in the direction of the front shell 1 to form the outer convex portion 23, and a step portion 24 is formed between the mounting surface 22 and the outer convex portion 23. The first light source 32 is arranged along the step portion 24 and close to the first decorative plate 31. Preferably, the first light source 32 is a first light bar arranged along the step portion 24. The power line of the first light bar can be extended out of the gap between the front shell 1 and the main support 2 and connected to the circuit board of the electrical appliance, so that the first light bar can obtain power supply. By arranging the first light source 32 along the periphery of the outer convex portion 23 and close to the first decorative plate 31, the light emitted by the first light source 32 can be emitted into the first decorative plate 31 through the periphery of the first decorative plate 31, so that the first decorative plate 31 can be uniformly illuminated. The light emitted by the first light source 32 can be guided to the display window 11 through the first decorative plate 31, so as to be easily seen by people. In addition, the light outside the display window 11 is shielded by the front shell 1 to prevent light leakage. Optionally, the outer convex portion 23 can have a circular, polygonal or other regular or irregular shape. The first light bar is arranged along the periphery of the outer convex portion 23, so as to facilitate uniform illumination of the first decorative plate 31. Figure 1As shown in FIG. 7, the second backlight assembly 4 is arranged in the outer protruding portion 23 away from the front shell 1, and the first mounting cavity 25 is arranged in the main support 2 away from the front shell 1, and the first mounting cavity 25 can accommodate the second backlight assembly 4; specifically, the main body of the main support 2 directly protrudes towards the side of the front shell 1 to form the outer protruding portion 23, and the first mounting cavity 25 is formed on the back of the main support 2; when the backlight display device is installed inside the electrical appliance, compared with directly protruding the second backlight assembly 4 relative to the back of the main support 2, the second backlight assembly 4 is installed in the first mounting cavity 25, which is conducive to protecting the second backlight assembly 4 and avoiding the second backlight assembly 4 from being easily collided by other components inside the electrical appliance.

[0035] As Figure 1 As shown in FIG. 7, the second backlight assembly 4 includes the second decorative plate 41 arranged on one side of the main support 2, and the second light source 42 arranged on one side of the second decorative plate 41, wherein the second light source 42 is arranged along the circumferential side of the second decorative plate 41, and the second decorative plate 41 has light transmission property; specifically, the side of the main support 2 facing the display window 11 is the front surface, the second decorative plate 41 is arranged on the back of the main support 2, and the second light source 42 is arranged on the back of the second decorative plate 41 and arranged along the circumferential side of the second decorative plate 41; the light emitted by the second light source 42 can enter the second decorative plate 41 from the four sides of the second decorative plate 41, so that the second decorative plate 41 is uniformly brightened, and the light emitted by the second light source 42 is guided to the direction of the first decorative plate 31 through the second decorative plate 41, so that the light emitted by the second light source 42 can be emitted outward through the first decorative plate 31 and the display window 11.

[0036] Further, the second decorative plate 41 is provided with an identification portion 411 extending outwardly towards the main support 2, and when the second decorative plate 41 is connected to the main support 2, the identification portion 411 is connected in correspondence with the hollow opening 21, and the identification portion 411 is synchronously brightened when the second decorative plate 41 is uniformly brightened; specifically, the identification portion 411 protrudes outwardly relative to the front surface of the second decorative plate 41, and the external shape of the identification portion 411 can be designed according to the shape of the hollow opening 21, and the hollow opening 21 is adapted to the identification portion 411, so that the identification portion 411 can extend into the hollow opening 21, and at this time, the end surface of the identification portion 411 is preferably substantially flush with the front surface of the hollow opening 21, so as to increase the backlight effect of the light emitted by the second light source 42 through the hollow opening 21, thereby improving the backlight effect of the brand identification of the electrical product and improving the appearance of the electrical appliance. Optionally, the second decorative plate 41 is made of PMMA.

[0037] As a preferred embodiment of the present embodiment but not limited, as shown in Figure 1 As shown in Fig. 7, the second backlight assembly 4 further comprises a diffusion plate 43 arranged on the side of the second decorative plate 41 away from the front shell 1, and the second light source 42 is arranged on the periphery of the diffusion plate 43 and close to the second decorative plate 41; specifically, the diffusion plate 43 is mounted on the back of the second decorative plate 41 and abuts against the second decorative plate 41, and the second light source 42 is preferably a second light bar, which is mounted along the periphery of the diffusion plate 43, and the power line of the second light bar can be extended out of the second decorative plate 41 and connected to the circuit board of the electrical appliance, and the light emitted by the second light bar is emitted from the periphery of the diffusion plate 43 into the diffusion plate 43, and is guided to the second decorative plate 41 by the diffusion plate 43, and is further guided to the display window 11 by the second decorative plate 41 and the first decorative plate 31. By arranging the second light source 42 on the periphery of the diffusion plate 43, the light emitted by the second light source 42 is uniformly dispersed and guided to the second decorative plate 41 by the diffusion plate 43, so that the second decorative plate 41 is uniformly brightened, and the backlight effect and the aesthetic appearance of the identification part 411 are further improved. Preferably, the back of the second decorative plate 41 is provided with a third mounting cavity 412, and the second light source 42 and the diffusion plate 43 are mounted in the third mounting cavity 412, so as to avoid the second light source 42 and the diffusion plate 43 exposed behind the second decorative plate 41, and further protect the second backlight assembly 4. Optionally, the power lines of the first light source 32 and the second light source 42 can be connected to the same circuit board of the electrical appliance, or connected to independent circuit boards respectively. It should be noted that, Figure 1 Figure 8 The style of the identification part 411 shown in Fig. 6 is an example of the present embodiment, and the style of the identification part 411 is not specifically limited in the present utility model.

[0038] As a preferred embodiment of the present embodiment but not limited, as shown in Figure 1 ​As shown in FIG. 7, the second decorative plate 41 and the main support 2 are further provided with a light shielding support 44, the light shielding support 44 is detachably connected with the main support 2 through an adhesive layer 5, the adhesive layer 5 is preferably a double-sided adhesive layer, so that the light shielding support 44 is easy to disassemble and assemble; the light shielding support 44 is provided with a light transmission opening 441, a second mounting cavity 442 communicating with the light transmission opening 441, and a light shielding portion 443 arranged at the side of the light transmission opening 441; the second mounting cavity 442 can accommodate the second decorative plate 41; the identification portion 411 passes through the light transmission opening 441 and is connected with the hollow opening 21; the second decorative plate 41 abuts against the light shielding portion 443; the area of the light transmission opening 441 is preferably larger than the area of the identification portion 411, so that the identification portion 411 can pass through as a whole; during assembly, the second decorative plate 41 abuts against the light shielding support 44 from the back of the light shielding support 44; the light transmission opening 441 communicates with the hollow opening 21; the identification portion 411 passes through the light transmission opening 441 and is connected with the hollow opening 21; at this time, the wall near the edge of the second decorative plate 41 abuts against the light shielding portion 443; since the second decorative plate 41 is bright as a whole, the wall of the second decorative plate 41 outside the identification portion 411 is shielded by the light shielding portion 443, so as to avoid light leakage; the light source emitted by the second light source 42 is transmitted through the identification portion 411, the hollow opening 21, the first decorative plate 31, and the display window 11 to the outside, so as to improve the backlight effect and the aesthetic degree of the identification light-emitting area. Further preferably, the second decorative plate 41 protrudes towards the front shell 1 to form the light shielding portion 443; the vertical wall 444 around the light shielding portion 443 forms the side wall of the second mounting cavity 442; during assembly, the second decorative plate 41 can be positioned through the vertical wall 444, so as to realize quick assembly of the second decorative plate 41 and to improve the connection stability of the second decorative plate 41.

[0039] As a preferred embodiment of the present embodiment but not limited, as shown in Figure 2 and Figure 8 the main support 2 is provided with an extension portion 26 extending outward, and the extension portion 26 is detachably connected with the front shell 1 through a first connecting assembly 6; specifically, in the main support 2, the extension portion 26 and the outward protruding portion 23 are oppositely arranged and located on both sides of the stepped portion 24; the extension portion 26 is spaced apart from the front shell 1 and forms an accommodation space for accommodating the first connecting assembly 6; optionally, as shown in Figure 8As shown in the figure, the first connecting assembly 6 comprises a first connecting lug 61, a first fastener 62, the first connecting lug 61 comprises a first assembly part 611 abutting against the front shell 1, a second assembly part 612 abutting against the main support 2, a connecting part 613 arranged between the first assembly part 611 and the second assembly part 612, during assembly, the first connecting lug 61 is arranged between the extension part 26 and the front shell 1, the first assembly part 611 contacts the back of the front shell 1, the second assembly part 612 contacts the front of the extension part 26, and the first fastener 62 is arranged through the extension part 26 and the second assembly part 612 from the back of the extension part 26, so as to realize the detachable connection between the main support 2 and the front shell 1, the first connecting assembly 6 is simple in structure and easy to disassemble and assemble the main support 2. Preferably, a plurality of first connecting assemblies 6 are arranged at intervals along the circumferential side of the main support 2. Optionally, the first fastener 62 can be a screw, a bolt or the like.

[0040] As a preferred embodiment of the present embodiment, not as a limitation, Figure 2 As shown in the figure, the backlight display device further comprises a pressing plate 8 arranged on the side of the second backlight assembly 4 away from the front shell 1, the pressing plate 8 is detachably connected with the main support 2 through a second connecting assembly 7, and the left and right sides of the pressing plate 8 are both provided with the second connecting assembly 7; specifically, the pressing plate 8 is arranged on the back of the second backlight assembly 4, that is, the pressing plate 8 contacts the back of the diffusion plate 43, so as to facilitate clamping the whole second backlight assembly 4, and the pressing plate 8 and the back of the outer convex part 23 of the main support 2 form a containing space for containing the second connecting assembly 7. Optionally, the second connecting assembly 7 can adopt the same structure as the first connecting assembly 6, which is simple in structure and easy to disassemble and assemble the pressing plate 8 and the second backlight assembly 4.

[0041] The above is only used to further illustrate the technical content of the present application by way of examples, so that the reader can more easily understand, but does not represent that the embodiments of the present application are limited to this, any technical extension or re-creation made according to the present application is also protected by the present application. The protection scope of the present application is subject to the claims.

Claims

1. A backlit display device, characterized by The application relates to a backlight assembly for a display device, which comprises oppositely arranged front shells (1) and main supports (2), a first backlight assembly (3) arranged between the front shells (1) and the main supports (2), and a second backlight assembly (4) arranged on one side of the main supports (2), wherein the main supports (2) are arranged between the first backlight assembly (3) and the second backlight assembly (4), the front shells (1) are provided with display windows (11), the main supports (2) are provided with hollow openings (21) opposite to the display windows (11), light emitted by the second backlight assembly (4) passes through the hollow openings (21), the first backlight assembly (3) and the display windows (11) and is emitted outward, and light emitted by the first backlight assembly (3) passes through the display windows (11) and is emitted outward.

2. A backlit display device as claimed in claim 1, characterized in that The first backlight assembly (3) comprises a first decorative plate (31) arranged between the front shells (1) and the main supports (2) and a first light source (32) arranged on one side of the first decorative plate (31), wherein the first decorative plate (31) is light-transmissive, and light emitted by the first light source (32) passes through the first decorative plate (31) and the display windows (11) and is emitted outward.

3. A backlit display device as claimed in claim 2, wherein the light source is a light emitting diode. The main supports (2) are provided with mounting surfaces (22) facing the front shells (1), the mounting surfaces (22) are outwardly convex to form outwardly convex portions (23) in a direction close to the front shells (1), steps (24) are formed between the mounting surfaces (22) and the outwardly convex portions (23), the first decorative plate (31) is arranged between the front shells (1) and the outwardly convex portions (23), and the first light source (32) is arranged on a circumferential side of the steps (24) and close to the first decorative plate (31).

4. A backlit display device as claimed in claim 3, wherein the light source is a light emitting diode. The second backlight assembly (4) is arranged on a side of the outwardly convex portions (23) away from the front shells (1), and a first mounting cavity (25) is arranged on a side of the main supports (2) away from the front shells (1), wherein the first mounting cavity (25) can accommodate the second backlight assembly (4).

5. A backlit display device as claimed in claim 1, wherein the light source is a light emitting diode. The second backlight assembly (4) comprises a second decorative plate (41) arranged on one side of the main supports (2) and a second light source (42) arranged on one side of the second decorative plate (41), wherein the second light source (42) is arranged along a circumferential side of the second decorative plate (41), the second decorative plate (41) is light-transmissive, a mark portion (411) extending outward is arranged on a side of the second decorative plate (41) facing the main supports (2), and the mark portion (411) is correspondingly connected with the hollow openings (21).

6. A backlit display device as claimed in claim 5, wherein the light source is a light emitting diode. The second backlight assembly (4) further comprises a diffusion plate (43) arranged on a side of the second decorative plate (41) away from the front shells (1), and the second light source (42) is arranged on a circumferential side of the diffusion plate (43) and close to the second decorative plate (41).

7. A backlit display device as claimed in claim 5, wherein the light source is a light emitting diode. The second decorative plate (41) and the main support (2) are further provided with a light shielding support (44), the light shielding support (44) is detachably connected with the main support (2) through an adhesive layer (5), the light shielding support (44) is provided with a light transmission opening (441), a second mounting cavity (442) communicated with the light transmission opening (441), and a light shielding portion (443) arranged on the side of the light transmission opening (441), the second mounting cavity (442) can accommodate the second decorative plate (41), the identification portion (411) passes through the light transmission opening (441) and is connected with the hollow opening (21) in a matched mode, and the second decorative plate (41) abuts against the light shielding portion (443).

8. A backlit display device as defined in claim 1, wherein, The main support (2) is provided with an extension portion (26) extending outward on the side, and the extension portion (26) is detachably connected with the front shell (1) through a first connecting assembly (6).

9. A backlit display device as claimed in claim 1, wherein, The backlight display device further comprises a pressing plate (8) arranged on the side of the second backlight assembly (4) away from the front shell (1), and the pressing plate (8) is detachably connected with the main support (2) through a second connecting assembly (7).

10. An electrical appliance characterized by The backlight display device is mounted in the electric appliance main body through the front shell (1).

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