Flame-retardant backlight light-transmitting assembly

Abstract

The utility model relates to a flame-retardant back light-transmitting assembly. An existing backlight light-transmitting assembly needs to be covered with a pattern film on the outer surface or is not flame-retardant, and the use experience is affected. The thin-wall display panel comprises a flame-retardant high-temperature-resistant plate and a display assembly arranged on the hidden face of the flame-retardant high-temperature-resistant plate, the hidden face of the flame-retardant high-temperature-resistant plate is partially sunken to form a thin-wall display area, the light transmittance Tg1 of the thin-wall display area is larger than or equal to 8.5%, and the display face of the display assembly is attached to the thin-wall display area. Display information generated on the display surface is displayed outwards through the thin-wall display area. The thin-wall display area is arranged on the flame-retardant high-temperature-resistant plate, so that light transmission is improved by reducing the wall thickness of the thin-wall display area, effective display of display information is ensured, the flame-retardant high-temperature-resistant plate can be integrally used as a shell panel with decorative appearance, and the integrated flame-retardant high-temperature-resistant plate has good safety; the situation that the flame-retardant high-temperature-resistant plate or a surface covering film of the flame-retardant high-temperature-resistant plate is softened or burnt due to heating is prevented, the safe and reliable full-hidden type back-through display function is achieved, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a flame-retardant backlight-transmitting component. Background Art

[0002] Existing electrical appliances, especially heating appliances, are equipped with panels with display components. The display components display the operating parameters of the appliances in real time, making it easy for users to understand the operating status of the heater. The existing panel includes a plate body, a light-emitting component arranged above the plate body, and a graphic display mask attached to the outer surface of the panel. The pipelines generated by the light-emitting component pass through the plate body to reveal the pattern on the graphic display mask. This structure has the following defects: the existing plate body is made of non-flame retardant materials, and the plate body is also easily deformed by heat, posing a safety hazard, and may even detach from the graphic display mask. The addition of additives such as flame retardants will cause the light transmittance of the plate body to decrease, affecting the display effect. In addition, there is a color difference between the graphic display mask and the bottom surface of the panel, affecting the aesthetics. Utility Model Content

[0003] In order to address the shortcomings of the existing technology, the utility model provides a flame-retardant backlight transmissive component, which uses flame-retardant and high-temperature resistant materials to eliminate safety hazards. By setting a thin-walled display area on a flame-retardant and high-temperature resistant board, and reducing the wall thickness of the thin-walled display area to improve light transmittance, a reasonable material basis is selected and the proportion of auxiliary agents is controlled, which not only ensures the effective display of display information, but also improves safety and enhances the user experience.

[0004] The present invention is realized in the following manner: a flame-retardant back-transmitting light component, comprising a flame-retardant and high-temperature resistant board and a display component arranged on the hidden surface of the flame-retardant and high-temperature resistant board, the hidden surface of the flame-retardant and high-temperature resistant board forms a thin-walled display area by local depression, the light transmittance of the thin-walled display area Tg1 ≥ 8.5%, and the display surface of the display component is attached to the thin-walled display area so that the display information generated on the display surface can be displayed outward through the thin-walled display area. The thin-walled display area is arranged on the flame-retardant and high-temperature resistant board, which not only improves the light transmittance by reducing the wall thickness of the thin-walled display area and ensures the effective display of the display information, but also can be used as a shell panel with a decorative appearance as a whole. The integrated flame-retardant and high-temperature resistant board can have better safety, prevent the flame-retardant and high-temperature resistant board or its surface coating from softening or burning due to heat, realize a safe and reliable fully hidden back-transmitting display function, and enhance the user experience.

[0005] Preferably, the flame-retardant and high-temperature-resistant board, excluding the thin-walled display area, forms a non-display area. The wall thickness ratio between the thin-walled display area and the non-display area is A, A≤2 / 3, or the wall thickness of the thin-walled display area is t, t≤1.4mm. A groove is provided on the hidden surface of the flame-retardant and high-temperature-resistant board, and the bottom wall of the groove forms the thin-walled display area. The top surface of the flame-retardant and high-temperature-resistant board forms a hidden surface. By providing a groove on the hidden surface to form a thin-walled display area, light transmittance is improved by reducing the wall thickness, and the bottom surface of the flame-retardant and high-temperature-resistant board remains flat, ensuring that the bottom surface of the flame-retardant and high-temperature-resistant board remains smooth and flat when the display component is closed. The thickness of the thin-walled display area is less than 2 / 3 of the thickness of the flame-retardant and high-temperature-resistant board. When parameter A>2 / 3, the thin-walled display area will affect light transmittance due to excessive thickness, resulting in the display information not being clearly displayed to the outside, affecting the user experience. D≤1.4mm, by increasing the light transmittance, it is easier for the light generated by the display component to be displayed externally, improving the brightness and clarity of the displayed information, and improving the visual experience.

[0006] Preferably, an inclined portion is provided at the junction of the groove and the flame-retardant and high-temperature-resistant board. The inclined portion, with a uniformly varying thickness, spans the edge of the thin-walled display area and the notch edge of the groove to minimize color differences between the areas. The sidewalls of the groove form an inclined portion, located between the thin-walled display area and the hidden surface, with a gradually varying thickness. This transition zone minimizes color differences between the various areas on the bottom surface of the flame-retardant and high-temperature-resistant board, preventing significant color differences between the areas and improving aesthetics.

[0007] Preferably, a raised edge is provided at least partially on the outer side of the inclined portion, which effectively reduces the flatness of the thin-walled display area, improves the structural strength around the thin-walled display area, and can also block the invasion of impurities and dust in the air path, prevent the display components from being contaminated, and block external light from entering the thin-walled display area to ensure display clarity.

[0008] Preferably, the transmittance Tg2 of the non-display area is less than 8.5%. By reducing the transmittance of the non-display area, the shading effect is increased, effectively preventing the hidden side light source from passing through the flame retardant and high temperature resistant board and appearing outside, ensuring that the bottom surface of the flame retardant and high temperature resistant board maintains its original color.

[0009] Preferably, the light transmittance of the non-display area is lower than the light transmittance of the thin-wall display area, ensuring that there is always a difference in light transmittance between the non-display area and the thin-wall display area.

[0010] Preferably, the thin-walled display area has a haze of less than 92.3% to improve clarity. Haze refers to the percentage of transmitted light intensity that deviates from the incident light by more than 2.5° to the total transmitted light intensity. A higher haze indicates a decrease in film gloss and transparency, especially imaging quality. Reducing haze improves clarity.

[0011] Preferably, the flame retardant and high temperature resistant board is mixed with a color filler, and the content of the color filler is C, C≤5%, which not only ensures that the color of the flame retardant and high temperature resistant board meets the decorative requirements, but also ensures that the transmittance in the thin-walled display area meets the design requirements, and prevents the flame retardant and high temperature resistant board from having good shielding properties in the area outside the thin-walled display area.

[0012] Preferably, the flame retardant and high temperature resistant board uses a high temperature resistant and light-transmitting substrate, which is mixed with a flame retardant. The thermal deformation temperature of the flame retardant and high temperature resistant board is at least 115°C, and the content of the flame retardant is B, B≤5%, so that the overall flame retardant grade reaches V2 or above. By adding flame retardants, the flame retardant reliability of the flame retardant and high temperature resistant board is improved, thereby preventing the flame retardant and high temperature resistant board from softening and deforming due to heat, thereby ensuring safety of use.

[0013] Preferably, the display assembly comprises a light-emitting panel with light-emitting elements and a graphic sticker attached to a thin-walled display area. The graphic sticker is provided with a pre-set light-transmitting pattern. Light generated by the light-emitting panel passes downward through the light-transmitting pattern on the graphic sticker to form the display information. Some light can form the display information after passing through the graphic sticker, and the display information is then transmitted outward after passing through the thin-walled display area. The display assembly is positioned directly above the flame-retardant and high-temperature resistant board, preventing external water or moisture from infiltrating the display assembly and thus providing protection.

[0014] Preferably, the display assembly includes a light shielding box disposed between the light-emitting panel and the graphic sticker. A vertical light-guiding channel is provided within the light shielding box. Light generated by the light-emitting element sequentially passes through the light-guiding channel and the light-transmitting pattern to form the displayed information. The light shielding box not only limits outward light diffusion, ensuring high brightness of the displayed information, but also supports and positions the light-emitting panel and, in conjunction with the flame-retardant and high-temperature-resistant board, clamps the graphic sticker to prevent it from shifting.

[0015] Preferably, the light-emitting panel is covered on the top surface of the light-shielding box and blocks the upper port of the light-guiding channel, and the light-emitting component is inserted into the light-guiding channel, and the light-emitting component is inserted into the upper port of the light-guiding channel to prevent light from diffusing outward.

[0016] Preferably, a stud with a screw hole is provided on the hidden surface adjacent to the thin-walled display area. The light-emitting panel and light-shielding box are secured to the stud via fasteners and clamp the graphic sticker to the thin-walled display area, ensuring that the light-transmitting pattern is completely covered by the lower end of the light-guiding channel. The light-shielding box is secured to the flame-retardant and high-temperature-resistant board and serves to securely position the graphic sticker and light-emitting panel, ensuring that the light-emitting element, light-guiding channel, graphic sticker, and thin-walled display area are aligned, thereby improving light transmission efficiency.

[0017] Preferably, the graphic sticker includes a light-transmitting base layer and a light-shielding layer and a surface color layer respectively covering the top and bottom surfaces of the light-transmitting base layer. The color difference between the surface color layer and the thin-walled display area is △E < 15, and the color difference between the surface color layer and the flame-retardant and high-temperature resistant board located in the peripheral area of ​​the thin-walled display area is △E < 10. The light-transmitting pattern is arranged on the light-shielding layer. The light-transmitting base layer plays a supporting role, ensuring that the graphic sticker remains flat. The light-shielding layer blocks light so that the light passing through the light-shielding layer forms display information. The surface color layer has a color similar to that of the flame-retardant and high-temperature resistant board, which not only facilitates the display information to be displayed after passing through the surface color layer and the thin-walled display area, but also can be superimposed with the color of the thin-walled display area when the light-emitting part is not on, thereby improving the aesthetics by eliminating the color difference between the thin-walled display area and the peripheral area.

[0018] The beneficial effects of the present invention are as follows: a thin-walled display area is set on the flame-retardant and high-temperature resistant board, which not only improves the light transmittance by reducing the wall thickness of the thin-walled display area to ensure the effective display of the displayed information, but also can be used as a shell panel with a decorative appearance as a whole. The integrated flame-retardant and high-temperature resistant board can have better safety, preventing the flame-retardant and high-temperature resistant board or its surface coating from softening or burning due to heat, realizing a safe and reliable fully hidden back-transparent display function and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the cross-sectional structure of the flame-retardant back light-transmitting component;

[0020] Figure 2 Schematic diagram of the structure of the flame retardant back light transmission component;

[0021] Figure 3 This is a schematic diagram of the disassembled structure of the flame-retardant back light-transmitting component;

[0022] Figure 4 Schematic diagram of a partial cross-sectional structure of the flame retardant and high temperature resistant board;

[0023] In the figure: 1. Flame retardant and high temperature resistant board, 2. Display component, 3. Thin-walled display area, 4. Groove, 5. Light-emitting board, 6. Graphic sticker, 7. Shading box, 8. Light guide channel, 9. Stud, 10. Light-emitting part, 11. Inclined part, 12. Raised edge. DETAILED DESCRIPTION

[0024] The essential features of the present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0025] like Figure 1 and 2A flame-retardant back-transmitting light component is shown, which consists of a flame-retardant and high-temperature resistant board 1 and a display component 2 arranged on the hidden surface of the flame-retardant and high-temperature resistant board 1. The hidden surface of the flame-retardant and high-temperature resistant board 1 is partially recessed to form a thin-walled display area 3, and the transmittance of the thin-walled display area 3 is Tg1 ≥ 8.5%. The display surface of the display component 2 is attached to the thin-walled display area 3, so that the display information generated on the display surface can be displayed outward through the thin-walled display area 3. Providing a thin-walled display area 3 on the flame-retardant and high-temperature resistant board 1 not only improves the light transmittance by reducing the wall thickness of the thin-walled display area 1 to ensure the effective display of the display information, but also can be used as a shell panel with a decorative appearance as a whole. The integrated flame-retardant and high-temperature resistant board 1 can have better safety, prevent the flame-retardant and high-temperature resistant board 1 or its surface coating from softening or burning due to heat, realize a safe and reliable fully hidden back-transmitting display function, and enhance the user experience.

[0026] In actual operation, the light transmittance of the flame retardant and high temperature resistant board 1 is related to its wall thickness. When the wall thickness of the flame retardant and high temperature resistant board 1 becomes thinner, light can pass through more easily, making the flame retardant and high temperature resistant board 1 have a higher light transmittance, ensuring that light can pass through the flame retardant and high temperature resistant board 1 with less loss and obtain clear display information. Conversely, when the wall thickness of the flame retardant and high temperature resistant board 1 becomes thicker, light cannot pass through easily, making the flame retardant and high temperature resistant board 1 have lower light transmittance and light blocking properties. To this end, a groove 4 is opened on the hidden surface of the flame retardant and high temperature resistant board 1. By opening the groove 4, the local wall thickness of the flame retardant and high temperature resistant board 1 is reduced, and a thin-walled display area 3 is formed on the bottom wall of the groove 4, so that the display information generated by the display component 2 can effectively pass through the thin-walled display area 3 and be clearly displayed to the user.

[0027] In actual operation, the wall thickness ratio between the thin-walled display area 3 and the flame retardant and high temperature resistant board 1 is A, A≤2 / 3, and the depth of the groove 4 is less than 2 / 3 of the wall thickness of the flame retardant and high temperature resistant board 1, which not only improves the transmittance of the thin-walled display area 3, but also ensures that the structural strength of the thin-walled display area meets the use requirements.

[0028] In actual operation, the flame retardant and high temperature resistant board 1 includes a thin-walled display area 3 with a smaller wall thickness and a non-display area with a larger wall thickness. Since the thin-walled display area 3 and the non-display area have different wall thicknesses, the two have different light transmittances. Specifically, there can be a variety of settings between the light transmittance of the thin-walled display area 3 and the non-display area. By increasing the light transmittance difference between the two, a better display experience can be obtained, which ensures that the display information can be clearly and brightly displayed outward through the thin-walled display area 3, and also ensures that the non-display area can effectively block light, thereby ensuring a larger brightness difference between the display information and the non-display area, thereby improving the clarity of the display information. The setting methods include but are not limited to the following, which should all be regarded as specific embodiments of the present utility model, specifically:

[0029] Method 1: The light transmittance Tg1 of the thin-walled display area 3 is ≥ 8.5%, and the light transmittance Tg2 of the non-display area is < 8.5%. By setting their respective ranges, a large difference between the two is ensured, thereby ensuring that the display information is clearly displayed;

[0030] Method 2: The light transmittance Tg1 of the thin-walled display area 3 is ≥ 8.5%, and the light transmittance of the non-display area is lower than that of the thin-walled display area. The light transmittance can be increased accordingly as Tg1 increases, ensuring that the light transmittance of the thin-walled display area 3 is always higher than that of the non-display area.

[0031] Method three: the transmittance Tg1 of the thin-walled display area 3 is ≥10.2%, and the transmittance Tg2 of the non-display area is ≤9.9%. By setting their respective ranges, a large difference between the two is ensured, thereby ensuring that the display information is clearly displayed.

[0032] In actual operation, setting a smaller parameter Tg2 can ensure that the appearance color of the flame-retardant and high-temperature resistant board 1 is consistent and effectively cover the shadows produced by the parts above the hidden surface.

[0033] In actual operation, the wall thickness of the thin-walled display area 3 is D, D≤1.4mm, which not only ensures that the thin-walled display area 3 has good structural strength to prevent damage due to force, but also improves light transmittance by reducing the wall thickness of the thin-walled display area 3.

[0034] In actual operation, the groove 4 is connected to the flame retardant and high temperature resistant plate 1 and an inclined portion 11 is provided (such as Figure 4 As shown), the thickness of the inclined portion 11 is uniformly varied and spans between the edge of the thin-walled display area 3 and the edge of the notch of the groove 4 to reduce the color difference between the areas. The non-display area is arranged around the thin-walled display area 3, and the non-display area and the thin-walled display area 3 are connected by the inclined side wall of the groove 4. Since the wall thickness of the side wall of the groove 4 will extend from the edge of the thin-walled display area 3 to the edge of the non-display area and gradually become thicker, the light transmittance of the side wall of the groove 4 will decrease as the wall thickness increases, thereby causing the color of the bottom surface of the flame-retardant and high-temperature resistant board 1 and the corresponding area of ​​the side wall of the groove 4 to gradually change from light to dark, preventing the occurrence of broken-band color difference due to the wall thickness difference between the thin-walled display area 3 and the non-display area, effectively reducing the color change difference between the various areas of the bottom surface of the flame-retardant and high-temperature resistant board 1, and improving the aesthetics.

[0035] In actual operation, a raised edge 12 is provided at least partially outside the inclined portion 11. The raised edge is annular and is provided along the edge of the thin-walled display area 3. It effectively blocks the area between the display assembly 2 and the thin-walled display area 3, effectively reducing the flatness of the thin-walled display area 3. This not only improves the structural strength around the thin-walled display area 3, but also blocks the intrusion of impurities and dust in the air path, preventing the display assembly 2 from being contaminated, and blocks external light from entering the thin-walled display area 3, ensuring display clarity.

[0036] In actual operation, the display assembly 2 includes a light-emitting board 5 with a light-emitting member 10, a graphic sticker 6 attached to the thin-walled display area 3, and a light-shielding box 7 (such as a light-shielding box 7) disposed between the light-emitting board 5 and the graphic sticker 6. Figure 3 As shown). A vertically penetrating light guide channel 8 is provided in the light-shielding box 7, and the light generated by the light-emitting component 10 passes through the light guide channel 8 and the light-transmitting pattern in sequence to form the display information. The light-emitting board 5 covers the top surface of the light-shielding box 7 and blocks the upper port of the light guide channel 8, and the light-emitting component 10 is inserted in the light guide channel 8. The light guide channel 8 can not only guide the light to be transmitted to the graphic sticker, but also prevent the light from leaking out and causing the brightness of the non-display area to increase, affecting the display effect. In addition, a plurality of light-transmitting patterns that independently form corresponding display information can be set on the graphic sticker, and the light-shielding box 7 and the light-emitting board 5 are equipped with light guide channels 8 and light-emitting components 10 that independently correspond to the light-transmitting patterns, so that various types of display information can be independently opened and closed for display, which should also be regarded as a specific embodiment of the present utility model.

[0037] In actual operation, the hidden surface is located outside the end of the groove 4 and is provided with a stud 9 with a screw hole. The ends of the light shielding box 7 and the light-emitting board 5 are provided with a perforation. During installation, the graphic sticker 6 is first attached to the thin-walled display area 3. Then, the light shielding box 7 is placed on the stud 9 through the perforation, so that the bottom surface of the light shielding box 7 overlaps the graphic sticker 6. Finally, the light-emitting board 5 is placed on the stud 9 through the perforation and secured with fasteners screwed into the screw holes, so that the light-emitting board 5 overlaps the light shielding box 7 and is fixedly clamped to the flame-retardant and high-temperature resistant board 1.

[0038] After being installed in place, the light shielding box 7 adjacent to the thin-walled display area 3 is fixedly connected to the studs 9 by fasteners and clamps the graphic sticker 6 with the thin-walled display area 3, so that the light-transmitting pattern is completely covered by the lower end of the light-guiding channel 8. The light-emitting board 5 and the flame-retardant and high-temperature resistant board 1 are brought together and clamp the light shielding box 7 and the graphic sticker 6, ensuring that the graphic sticker 6 is tightly clamped between the thin-walled display area 3 and the bottom surface of the light shielding box 7, ensuring that the lower end of the light-guiding channel 8 completely covers the light-transmitting pattern used to form the display information, and also ensuring that the light-emitting board 5 is superimposed on the top surface of the light shielding box 7 and the light-emitting component 10 is inserted into the upper end of the light-guiding channel 8.

[0039] When in use, the light-emitting board 5 is powered on and generates light transmitted along the light-guiding channel 8 through the light-emitting element 10. When the light passes through the graphic sticker 6, it is partially blocked and forms display information, which is displayed outward through the thin-wall display area 3.

[0040] In actual operation, a translucent pattern is preset on the graphic sticker 6, and the light generated by the light-emitting panel 5 passes downward through the translucent pattern on the graphic sticker 6 to form the display information. The graphic sticker 6 includes a translucent base layer and a shading layer and a surface color layer respectively covering the top and bottom surfaces of the translucent base layer. The translucent base layer has good structural strength, plays a role in supporting and shaping, prevents the graphic sticker 6 from bending and folding, and ensures that the graphic sticker 6 remains flat; the surface color layer provides the graphic sticker 6 with a base color similar to that of the flame-retardant and high-temperature resistant board 1, which can not only reduce the color difference between the thin-walled display area 3 and the non-display area, but also hide the translucent pattern on the graphic sticker 6 by setting the base color; the shading layer is provided with a transparent translucent pattern, and light shines on the shading layer. Part of the light passes through the transparent translucent pattern and forms display information, and the remaining light is blocked and reflected by the shading layer, which not only ensures that the edges of the display information are clear, but also enhances the brightness of the display information through the reflected light, thereby improving the display effect.

[0041] In actual operation, the color difference between the surface color layer and the thin-walled display area 3 is less than 15, and the color difference between the surface color layer and the flame-retardant and high-temperature resistant board 1 surrounding the thin-walled display area 3 is less than 10. The light-transmitting pattern is provided on the light-shielding layer. The color difference value is used to indicate the difference in color. Setting reasonable color difference values ​​between the surface color layer and the thin-walled display area 3, and between the surface color layer and the non-display area, and making them difficult for users to discern, not only reduces the difficulty of production and processing, but also effectively improves the aesthetics of the flame-retardant and high-temperature resistant board 1.

[0042] In actual operation, the flame retardant and high temperature resistant board 1 is made of plastic and is formed by injection molding. The flame retardant and high temperature resistant board 1 is mixed with a color filler. The content of the color filler is C, C=4%. In addition, the parameter C can also be 5%, 3%, 2%, etc., as long as it meets the requirement of C≤5%.

[0043] In actual operation, the flame retardant and high temperature resistant board 1 is mixed with a flame retardant, and the content of the flame retardant is B, B=4%. In addition, the parameter B can also be 5%, 3%, 2%, etc., as long as it meets the requirement of B≤5%.

Claims

1. A flame retardant backlight transmission component, comprising a flame retardant and high temperature resistant board (1) and a display component (2) arranged on a hidden surface of the flame retardant and high temperature resistant board (1), characterized in that: The hidden surface of the flame-retardant and high-temperature resistant board (1) is partially recessed to form a thin-walled display area (3), the light transmittance Tg1 of the thin-walled display area (3) being ≥8.5%, and the display surface of the display assembly (2) is attached to the thin-walled display area (3), so that the display information generated on the display surface is displayed outward through the thin-walled display area (3).

2. The flame retardant backlight transmission assembly according to claim 1, characterized in that: The flame retardant and high temperature resistant board (1) has an area other than the thin-walled display area (3) forming a non-display area, the wall thickness ratio between the thin-walled display area (3) and the non-display area is A, A≤2 / 3, or the wall thickness of the thin-walled display area is t, t≤1.4 mm, and a groove (4) is provided on the hidden surface of the flame retardant and high temperature resistant board (1), and the bottom wall of the groove (4) forms the thin-walled display area (3).

3. The flame retardant backlight transmission assembly according to claim 2, characterized in that: The light transmittance Tg2 of the non-display area is less than 8.5%; or, the light transmittance of the non-display area is less than the light transmittance of the thin-wall display area (3).

4. The flame-retardant backlight component according to claim 2, characterized in that: An inclined portion (11) is provided at the junction of the groove (4) and the flame-retardant and high-temperature resistant plate (1), and the inclined portion (11) is connected between the edge of the thin-wall display area (3) and the notch edge of the groove (4) with uniformly varying thickness, so as to reduce color differences between regions.

5. The flame retardant backlight transmission assembly according to claim 4, characterized in that: A raised edge (12) is at least partially provided on the outer side of the inclined portion (11).

6. The flame retardant backlight transmission assembly according to any one of claims 1 to 5, characterized in that: The display assembly (2) comprises a light-emitting panel (5) with a light-emitting element (10) and a graphic sticker (6) attached to a thin-walled display area (3). A light-transmitting pattern is preset on the graphic sticker (6). Light generated by the light-emitting panel (5) passes downward through the light-transmitting pattern on the graphic sticker (6) to form the display information.

7. The flame-retardant backlight transmission assembly according to claim 6, characterized in that: The display assembly (2) comprises a light shielding box (7) arranged between the light-emitting board (5) and the pattern sticker (6); a vertically penetrating light guide channel (8) is provided in the light shielding box (7); light generated by the light-emitting element (10) sequentially passes through the light guide channel (8) and the light-transmitting pattern to form the display information.

8. The flame retardant backlight transmission assembly according to claim 7, characterized in that: The light-emitting plate (5) covers the top surface of the light-shielding box (7) and blocks the upper end of the light-guiding channel (8), and the light-emitting element (10) is inserted into the light-guiding channel (8); or, a stud (9) with a screw hole is provided on the hidden surface adjacent to the thin-walled display area (3), and the light-emitting plate (5) and the light-shielding box (7) are fixedly connected to the stud (9) by fasteners and clamp the graphic sticker (6) with the thin-walled display area (3), so that the light-transmitting pattern is completely covered by the lower end of the light-guiding channel (8) and the clarity of the displayed information is improved.

9. The flame-retardant backlight transmission assembly according to claim 6, characterized in that: The graphic sticker (6) comprises a light-transmitting base layer and a light-shielding layer and a surface color layer respectively covering the top and bottom surfaces of the light-transmitting base layer, wherein the color difference value ΔE between the surface color layer and the thin-walled display area (3) is less than 15, and the color difference value ΔE between the surface color layer and the flame-retardant and high-temperature resistant board (1) located in the peripheral area of ​​the thin-walled display area (3) is less than 10, and the light-transmitting pattern is arranged on the light-shielding layer.

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