Luminous logo component for automobile

Abstract

The present invention discloses an automotive illuminated emblem assembly, comprising an emblem cover, an emblem body, a backlight module, a wiring harness, and an airbag cover. The airbag cover has a logo mounting groove formed on its surface. The backlight module is positioned within the logo mounting groove of the airbag cover. The emblem body is positioned within the logo mounting groove of the airbag cover and located on the surface of the backlight module. The emblem cover is pressed into the logo mounting groove of the airbag cover, pressing the emblem body and the backlight module together. One end of the wiring harness is connected to the backlight module, and the other end passes through the logo mounting groove of the airbag cover and is connected to the vehicle control system. The present invention utilizes the emblem cover to press the emblem body and backlight module into the logo mounting groove formed on the airbag cover, preventing the illuminated emblem assembly from detaching or rupturing when the airbag is deployed.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and in particular to a luminous logo component for an automobile. Background Art

[0002] As people's living standards improve, they pay more and more attention to the texture and personality of the car's interior. Car interior parts are currently accelerating towards electronic and intelligent development. More and more cars' dashboards, door panels, central control, sunroofs and ceilings are equipped with smart backlights, which can create a luxurious, technological, romantic, warm, comfortable or personalized atmosphere. Inside the car, especially at night, it can show the differences of the car brand and enhance the quality of the interior.

[0003] A car's logo symbolizes its style, quality, and culture, serving as a core element of the interior design and providing a crucial finishing touch. As a key decorative element in the driver's seat, the driver's airbag logo necessitates intelligent backlighting. This intelligent, illuminated logo, installed on the driver's airbag, complements other intelligent interior components to create a complete ambiance, enhance design flair, improve brand recognition, and serve as both an optical indicator and a warning.

[0004] Existing patents for luminous automotive logos, such as CN103158633A, CN105034973A, CN105818755A, and CN207241614U, are mostly designed based on the structural features of logos installed on the outside of the car. These luminous logos share the following characteristics: large size, convenient backlight module and shading structure design, relatively flat back structure, simple installation and fixing structure, suitable for pasting or snapping onto relatively flat bases (such as the front grille, rear luggage compartment cover, and the center of the wheel hub), but not suitable for installation on the driver's airbag inside the car.

[0005] European Patent EP2340188B1 and US Patent US8061861B2 describe an illuminated badge that can be mounted on a driver's airbag. These patents disclose methods for mounting and securing the illuminated badge on the driver's airbag, as well as methods for achieving different color blocks on the badge. However, the badge and backlight module are simply combined and superimposed. This mounting method is only suitable for injection-molded plastic badges, not metal badges formed from sheet metal. Furthermore, the patent specifications reveal that the badge and its backlight module are large and bulky, lacking any reinforcement, posing a risk of flying fragments that could injure the driver or occupants during airbag deployment. Furthermore, the patents provide only a brief description of the core structure of the illuminated badge (the backlight module). The patents do not disclose or suggest any solutions for achieving uniform light distribution on the curved backlight panel, specifically how to achieve curved or conformable backlight modules to the complex curves of the badge's backside, ensuring uniform light distribution across the backlight panel, or for achieving thinness and reliability of the badge and its backlight module.

[0006] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research. The technical solution to be introduced below is produced in this context. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a car luminous emblem assembly with a compact structure, high installation stability, and the ability to withstand the huge impact force when the airbag is deployed without falling off or breaking, in order to address the many problems existing in the application of existing luminous emblems on driver airbags.

[0008] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0009] A light-emitting logo assembly for an automobile includes a logo cover, a logo body, a backlight module, a wiring harness, and an airbag cover. A logo mounting groove is formed on the surface of the airbag cover. The backlight module is disposed within the logo mounting groove of the airbag cover. The logo body is disposed within the logo mounting groove of the airbag cover and is located on the surface of the backlight module. The logo cover is pressed into the logo mounting groove of the airbag cover and presses the logo body and the backlight module tightly. One end of the wiring harness is connected to the backlight module, and the other end thereof passes through the airbag cover and is connected to the automobile control system.

[0010] In a preferred embodiment of the present invention, at least one light-emitting window is formed by hollowing out a portion of the logo cover plate that needs to emit light.

[0011] In a preferred embodiment of the present invention, a receiving cavity for receiving the logo body and the backlight module is formed on the back surface of the logo cover.

[0012] In a preferred embodiment of the present invention, a plurality of mounting legs are formed at circumferential intervals at the periphery of the back side of the logo cover plate, each mounting leg is provided with an axially extending anti-slip notch, each mounting leg is provided with a weakened hole at the bend, a plurality of leg mounting through holes are provided at the periphery of the bottom surface of the logo mounting groove of the airbag cover plate, which are in a one-to-one correspondence with the plurality of mounting legs, a leg groove is formed at a position on the back side of the airbag cover plate relative to each leg mounting through hole, and a retaining rib is formed on each leg groove; during press-fitting, each mounting leg on the logo cover plate correspondingly passes through the leg mounting through hole of the airbag cover plate, and then the part of each mounting leg passing through the leg mounting through hole is bent along the weakened hole and fastened in the leg groove, and the anti-slip notch on each mounting leg is correspondingly fastened to the retaining rib of each leg groove to prevent the logo cover plate from falling off the airbag cover plate.

[0013] In a preferred embodiment of the present invention, when the anti-slip cutout on each mounting leg is correspondingly engaged with the retaining rib of each leg groove, the outer end of each retaining rib is processed using a welding process so that the outer end of each retaining rib forms an inverted buckle that presses the mounting leg.

[0014] In a preferred embodiment of the present invention, the logo body is a flat plate, a one-way arc surface, a two-way arc surface, or a thin sheet structure with any curved surface, the outer contour of which matches that of the logo cover.

[0015] In a preferred embodiment of the present invention, a boss matching the light-emitting window of the logo cover is formed on the front surface of the logo body, and the boss passes through the light-emitting window and is flush with the surface of the logo cover, or slightly protrudes from the surface of the logo cover.

[0016] In a preferred embodiment of the present invention, at least one concave surface is provided on the front surface of the logo body, and the concave surface is made into a color pattern different from other parts by silk screen printing, spraying, electroplating, vacuum coating and other processes.

[0017] In a preferred embodiment of the present invention, a groove for accommodating the backlight module is formed on the back surface of the logo body.

[0018] In a preferred embodiment of the present invention, a first film layer and a second film layer are sequentially arranged on the front surface of the logo body from top to bottom.

[0019] In a preferred embodiment of the present invention, the backlight module includes a light-emitting circuit board, a light guide plate, a first light-reflecting film and a second light-reflecting film, the light guide plate is covered on the light-emitting circuit board, the first light-reflecting film is covered on the front side of the light guide plate, and the second light-reflecting film is covered on the back side of the light guide plate.

[0020] In a preferred embodiment of the present invention, the light guide plate is a flat plate, a one-way arc surface, a two-way arc surface, or a thin sheet structure with an outer contour matching the logo body.

[0021] In a preferred embodiment of the present invention, a plurality of light-scattering particles are arranged at intervals on the back surface of the light guide plate.

[0022] In a preferred embodiment of the present invention, grooves or through holes are formed on the back surface of the light guide plate to accommodate electronic components on the surface of the light-emitting circuit board.

[0023] In a preferred embodiment of the present invention, a plurality of light-transmitting holes are provided on the first light-reflecting film at intervals.

[0024] In a preferred embodiment of the present invention, the light-emitting circuit board includes a substrate, a plurality of LED lamp beads and a controller, the plurality of LED lamp beads are integrated on the substrate, and the controller is integrated on the substrate.

[0025] In a preferred embodiment of the present invention, the LED lamp beads are side-emitting LED lamp beads or front-emitting LED lamp beads.

[0026] In a preferred embodiment of the present invention, the plurality of LED lamp beads are arranged below the non-luminous area of ​​the logo body, or a light-shielding film is provided on the front of the light guide plate above the plurality of LED lamp beads.

[0027] In a preferred embodiment of the present invention, a plurality of deformation windows are provided at intervals in the middle of the substrate to facilitate deformation of the substrate.

[0028] In a preferred embodiment of the present invention, the wiring harness adopts a flexible circuit board, one end of which is integrally manufactured with the substrate; or, the wiring harness adopts a flexible flat cable, one end of which is connected to the substrate by welding; or, the wiring harness adopts a flat cable structure, one end of which is connected to the substrate by welding.

[0029] In a preferred embodiment of the present invention, one end of the wiring harness connected to the vehicle control system is provided with a connector that plugs into and mates with the vehicle control system.

[0030] In a preferred embodiment of the present invention, at least one notch is formed on both side edges of the wiring harness at intervals along the length direction.

[0031] In a preferred embodiment of the present invention, at least one fixing window for fixing the wire harness is provided on the wire harness.

[0032] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: the present invention utilizes the logo cover to press the logo body and the backlight module into the logo mounting groove formed on the airbag cover, thereby preventing the luminous logo assembly from detaching or breaking when the airbag is detonated. At the same time, the present invention can be used together with other ambient lights in the car to create a beautiful and comfortable atmosphere, and can also be connected to the body controller to receive instructions from the body controller and drive the LED light to change color, flashing frequency or a combination thereof, thereby serving as an optical indication and alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a structural schematic diagram of the logo cover of the present invention.

[0036] Figure 3 It is a partial enlarged schematic diagram of the logo cover plate of the present invention after being installed on the airbag cover plate.

[0037] Figure 4 It is a partial enlarged schematic diagram of the logo cover plate of the present invention after being installed on the airbag cover plate and welded.

[0038] Figure 5 It is a structural schematic diagram of the logo body of the present invention.

[0039] Figure 6 It is a cross-sectional schematic diagram of the logo body of the present invention.

[0040] Figure 7 3 is a schematic cross-sectional view of the light guide plate of the present invention.

[0041] Figure 8 It is a schematic diagram of the assembly of the light-emitting circuit board and the wiring harness of the present invention.

[0042] Figure 9 It is a schematic structural diagram of the driver's airbag portion of the present invention.

[0043] Figure 10 It is a structural schematic diagram of the airbag cover of the present invention.

[0044] Figure 11 It is a structural schematic diagram of another embodiment of the logo cover of the present invention.

[0045] Figure 12 It is a cross-sectional schematic diagram of the combination of the logo cover plate and the logo body of the present invention. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0047] Example 1

[0048] See also Figure 1 The figure shows an automotive illuminated logo assembly, including a logo cover 100, a logo body 200, a backlight module 300, a wiring harness 400, and an airbag cover 500. A logo mounting groove 510 is formed on the surface of the airbag cover 500. The backlight module 300 is disposed in the logo mounting groove 510 of the airbag cover 500. The logo body 200 is disposed in the logo mounting groove 510 of the airbag cover 500 and is located on the surface of the backlight module 300. The logo cover 100 is pressed into the logo mounting groove 510 of the airbag cover 500 and presses the logo body 200 and the backlight module 300 together. One end of the wiring harness 400 is connected to the backlight module 300, and the other end thereof passes through the airbag cover 500 and is connected to the vehicle control system.

[0049] See also Figure 2 The logo cover 100 can be shaped like a circle, oval, elongated strip, shield, or any other arbitrary shape. It is preferably formed using sheet metal forming techniques from sheet metal. The metal sheet is preferably made of aluminum, steel (iron), copper, or the like. Surface treatment techniques include spray painting, silk screen printing, electroplating, vacuum coating, and anodizing, as needed. Alternatively, the original color of the material can be maintained with appropriate anti-corrosion measures, such as spraying with varnish or acrylic. The surface of the logo cover 100 is hollowed out to form light-emitting windows 110 in areas where light is to be emitted. The number of light-emitting windows 110 can range from one to several. The cross-sectional shape of the light-emitting windows 110 is preferably a character, pattern, regular geometric figure, or other arbitrary shape, allowing light to be emitted through the hollowed-out portions. The back of the logo cover 100 is formed using sheet metal forming techniques to form a housing 120 that accommodates the logo body 200 and the backlight module 300. The number of housing cavities 120 can range from one to several, and some of these cavities 120 can be partially interconnected.

[0050] To ensure a secure fit between the logo cover 100 and the airbag cover 500, a plurality of mounting legs 130 are formed circumferentially around the back edge of the logo cover 100. The number of mounting legs 130 ranges from two to several, evenly or unevenly distributed around the circumference of the logo cover 100. The width of the mounting legs 130 is preferably 5 mm to 10 mm. Each mounting leg 130 has a weakened hole 131 defined at its bend. The shape of the weakened hole 131 is preferably circular, oval, rectangular, or any other shape. The mounting leg 130 also has an axially extending anti-slip notch 132. The anti-slip notch 132 can be located on either side, on one side, or in the middle of the end of the mounting leg 130. Its cross-section is preferably rectangular, triangular, or any other shape. The weakened hole 131 and the anti-slip notch 132 can be connected. A plurality of leg mounting holes 520 are provided around the bottom periphery of the logo mounting recess 510 of the airbag cover 500. These leg mounting holes 520 correspond one-to-one with the plurality of mounting legs 130 and are of matching size. A leg recess 530 is formed on the back of the airbag cover 500 at a position corresponding to each leg mounting hole 520. A retaining rib 531 is formed on each leg recess 530. When the logo cover 100 is press-fitted onto the airbag cover 500, each mounting leg 130 on the logo cover 100 passes through the leg mounting hole 520 of the airbag cover 500. The portion of each mounting leg 130 that passes through the leg mounting hole 520 is then bent along the weakened hole 131 and fastened within the leg recess 530. The anti-slip notch 132 on each mounting leg 130 is correspondingly engaged with the retaining rib 531 of each leg recess 530. Figure 3 As shown, the logo cover 100 is prevented from falling off from the airbag cover 500 .

[0051] Furthermore, when the anti-dropout notch 132 on each mounting leg 130 is correspondingly engaged with the retaining rib 531 of each leg groove 530, the outer end of each retaining rib 531 is processed by a hot melt welding process or an ultrasonic welding process, so that the outer end of each retaining rib 531 forms an undercut 531a for pressing the mounting leg 130, as shown in FIG. Figure 4 As shown, the connection stability of the logo cover 100 is improved.

[0052] See also Figure 5The logo body 200 is preferably injection-molded from a transparent material. Alternatively, it can be preformed into a thin plate or profile with a specific cross-section, and then formed into the desired shape using punching, cutting, or other post-processing techniques. The material is preferably optically transparent PC, PMMA, or PS. It should be noted that the logo body 200 can be made of not only hard and transparent materials but also soft and transparent materials such as PE, PVC, or TPU. The logo body 200 preferably has a flat plate, a unidirectional arc surface (tile-shaped), a bidirectional arc surface, or a thin sheet with an arbitrary curved surface, with an outer contour matching that of the logo cover 100. The front of the logo body 200 is provided with a raised platform 210. The cross-sectional shape of the raised platform 210 is preferably a character, pattern, regular geometric figure, or other arbitrary shape that matches the light-emitting window 110 of the logo cover 100. The number of raised platforms 210 can vary from one to several. The raised platforms 210 can pass through the light-emitting window 110 and be flush with the surface of the logo cover 100, or they can protrude 0.1mm to 1mm above the surface of the logo cover 100. Of course, this dimension can also be any other dimension besides 0.1mm to 1mm. The center or edge of the raised platform 210 can be provided with a concave surface 220. The shape of the concave surface 220 is preferably a character, pattern, regular geometric figure, or other arbitrary shape. The depth of the concave surface 220 is preferably 0.1mm to 1mm. Of course, this dimension can also be any other dimension besides 0.1mm to 1mm, including a negative dimension (i.e., the concave surface 220 can protrude above the raised platform 210). The surface of the concave surface 220 can be produced in a different color or pattern from the rest of the logo using processes such as silk screen printing, spray painting, electroplating, and vacuum coating. In order to reduce the thickness of the luminous logo, a groove 230 for accommodating the backlight module 300 may be provided on the back side (the side facing the backlight module 300 ) of the logo body 200 .

[0053] See also Figure 6The front surface of the logo body 200 (the side facing the logo cover 100) is preferably formed with a first film layer 240 and a second film layer 250 arranged sequentially from top to bottom using processes such as silk screen printing, spray coating, electroplating, vacuum coating, and thin film lamination. The first film layer 240 is preferably silver (high gloss or matte), gold, white, or any other color. The thickness of the first film layer 240 is preferably 0.01 to 30 microns. The first film layer 240 is preferably translucent, and its light transmittance is preferably 10% to 40%. The second film layer 250 can exist independently. A first preferred solution involves uniformly mixing light-diffusing agent powder into the silk-screen or spray-coated material of the first film layer 240 to form a light-diffusing layer, allowing the first film layer 240 to also perform the effects of the second film layer 250. A second preferred solution involves applying fine sand textures to the mold cavity surface, resulting in a frosted glass-like fine sand texture layer on the front of the logo body 200 after injection molding. A third preferred solution involves applying post-processing techniques such as shot peening, laser dotting, or silk-screen printing to form a fine sand texture or a thin layer similar to fine sand texture on the front of the logo body 200. A fourth preferred solution involves uniformly mixing light-diffusing agent powder into the silk-screen or spray-coated material and then applying it separately to form a thin layer. A fifth preferred solution involves forming a composite film of the first and second film layers 240 and 250 and affixing it to the surface of the logo body 200. The second film layer 250 is preferably 30 to 100 microns thick, with a light transmittance of 60% to 90% and a haze of 70% to 95%.

[0054] The first film layer 240 primarily creates the color effect on the surface of the illuminated logo. When the backlight is off, the color of the first film layer 240 itself is present. When illuminated, the color of the backlight is present, or a mixture of the backlight and the film layer. The second film layer 250 primarily serves to evenly distribute and diffuse the light. It should be noted that the fine graining may not be uniformly distributed; it may be coarser and denser near the light source and finer and sparser farther away. The coarseness and density of the graining in a particular area can be adjusted based on the desired effect. It should be noted that the second film layer 250 is optional and can be omitted if the logo body 200 or the backlight module 300 provides a uniform light effect.

[0055] See also Figure 7 and Figure 8 And focus on combining Figure 1The backlight module 300 includes a light guide plate 310, a first reflective film 320, a second reflective film 330, and a light-emitting circuit board 340. The light guide plate 310 overlies the light-emitting circuit board 340 and is preferably made of a transparent material by injection molding. Alternatively, it can be preformed into a thin plate or a profile with a specific cross-section and then formed into the desired shape using punching, cutting, or other post-processing techniques. The material is preferably optically transparent PC, PMMA, or PS. It should be noted that the light guide plate 310 can be made of not only hard transparent materials but also soft transparent materials such as PE, PVC, or TPU. The light guide plate 310 preferably comprises a flat plate, a unidirectional arc surface (tile-shaped), a bidirectional arc surface, or a thin sheet with an arbitrary curved surface, with an outer profile that matches the logo body 200. A plurality of light-scattering particles 311 are spaced apart on the back surface of the light guide plate 310 (the side facing the light-emitting circuit board 340). In order to reduce the thickness of the luminous logo, a groove 312 can be provided on the back of the light guide plate 310 to accommodate electronic components on the surface of the luminous circuit board 340. The position of the groove 312 is preferably in the non-luminous area of ​​the logo. After optimization, it does not affect the conduction of light in the light guide plate 310. If needed, the groove 312 can be designed as a through hole, that is, the groove 312 runs through the front and back of the light guide plate 310.

[0056] A first reflective film 320 covers the front surface of the light guide plate 310 (facing the logo body 200), and a second reflective film 330 covers the back surface of the light guide plate 310. The thickness of the first and second reflective films 320 and 330 is preferably 10 to 50 microns. A preferred embodiment of the first and second reflective films 320 and 330 is to apply a silver, gold, white, or other highly reflective color coating to the surface of the light guide plate 310 using processes such as silk screen printing, spray coating, electroplating, and vacuum coating. A second preferred embodiment is to form a film sheet that matches the outer contour of the light guide plate 310 using processes such as cutting, stamping, and hot pressing. The first reflective film 320 is provided with a plurality of light-transmitting holes 321 at intervals. The diameter of the light-transmitting holes 321 is preferably 0.01 to 0.5 mm. The light-transmitting holes 321 are preferably formed using processes such as laser engraving, punching, and chemical etching.

[0057] The illuminated circuit board 340 consists of a substrate 341, several LEDs 342, and a controller 343. The LEDs 342 are integrated onto the substrate 341, and the controller 343 is also integrated onto the substrate 341. To reduce the thickness and weight of the illuminated logo, the substrate 341 is preferably a flexible printed circuit (FPC). The thickness of the substrate A-38 is preferably 0.02 mm to 0.3 mm. The LEDs 342 are preferably side-emitting or front-emitting. The colors of the LEDs 342 are preferably RGBW (red, green, blue, and white), RGB (red, green, blue), white, red, blue, or any other color. The LEDs 342 are preferably packaged in an ultra-small package with a thickness of 0.5 mm to 1.5 mm. The LEDs 342 are preferably placed below the non-illuminated area of ​​the logo, or a light-shielding film 344 is placed above the LEDs 342 (facing the light guide plate 310). The side-emitting and front-emitting LED lamp beads 342 can be used individually or simultaneously.

[0058] The LED lamp beads 342 may not be arranged in a straight line on the substrate 341. By adjusting the arrangement position and angle of the LED lamp beads 342, the light can be better propagated evenly in the light guide plate 310. Preferably, the LED lamp beads 342 are roughly divided into two to four arrays and form an approximately opposite-beam state. The side-emitting LED lamp beads 342 and the front-emitting LED lamp beads 342 can be used in combination. The side-emitting LED lamp beads 342 cooperate with the light guide plate to realize large-area lighting, and the front-emitting LED lamp beads 342 cooperate with the uniform light film to realize local lighting. By combining LED lamp beads 342 with different lighting modes (side or front lighting) and colors, a more colorful color effect can be achieved.

[0059] The controller 343 preferably integrates an MCU (microprocessor), an LED driver, a LIN (local area network) communication function, and a device with a small and thin package size (such as a QFN or TSSOP package). An adhesive layer (not shown in the figure) is provided on the front side of the substrate 341 (facing the light guide plate 310). For ease of production, the adhesive layer can also be provided on the back side of the light guide plate 310. A plurality of windows 341a are spaced apart in the middle of the substrate 341. The shape of the windows 341a is preferably an elongated strip, and the shapes of the two ends of the windows 341a are preferably circular, so that the substrate 341 can be easily deformed and can better fit together with the back side of the light guide plate 310.

[0060] Because the light guide plate 310 has a non-planar structure, light entering the highly transparent light guide plate 310 from the side propagates in a straight line. Upon encountering the first and second reflective films 320, 330, and the light-scattering particles 311, it is reflected and redirected. Through optimized design, most of the light is continuously reflected and propagates forward, ultimately filling the interior of the light guide plate 310 with a near-uniform distribution. As light propagates through the light guide plate 310, when it strikes the light-transmitting apertures 321 on the front surface of the light guide plate 310, it exits through these apertures, illuminating the illuminated logo. It should be noted that the light-scattering particles 311 and light-transmitting apertures 321 are not uniformly distributed. They are thinner and sparser near the light source, while they are coarser and denser farther away. The thickness and density of the light-scattering particles 311 and light-transmitting apertures 321 can be adjusted based on actual needs, thereby achieving more uniform brightness across the backlight module 300.

[0061] To simplify the topology of the luminous logo and reduce its weight, the light guide plate 310, first reflective film 320, and second reflective film 330 can be eliminated. Instead, light-scattering dots (not shown) and a reflective layer (not shown) can be provided on the back of the logo body 200, allowing the logo body 200 to also function as a light guide. In a specific embodiment, the light-scattering dots are preferably formed by injection mold pre-pressing, laser dotting, or silk screen printing. The reflective layer is preferably formed on the back of the logo body 200 by silk screen printing, spraying, electroplating, or vacuum coating. The reflective layer is preferably silver, white, gold, or any other color, with a thickness of 10 to 50 microns. A separate reflective layer can also be used for better reflective effects. Alternatively, a light-scattering agent can be evenly mixed into the injection molding material of the logo body 200, allowing the logo body 200 to also function as a light-scattering plate (layer).

[0062] The first preferred embodiment of the wiring harness 400 uses an FPC (flexible printed circuit board) and is manufactured integrally with the substrate 341. The second preferred embodiment of the wiring harness 400 uses an FFC (flexible flat cable), one end of which is press-welded or soldered to the substrate 341. The third preferred embodiment of the wiring harness 400 uses a flat cable, one end of which is press-welded or soldered to the substrate 341. A connector-free design is used between the wiring harness 400 and the substrate 341, which is simple and reliable and does not occupy space inside the airbag. The width of the wiring harness 400 is preferably 3 mm to 12 mm. The end of the wiring harness 400 that is connected to the vehicle control system is provided with a connector 410 that plugs into the vehicle control system. The connector 410 has a locking structure to prevent it from loosening. Notches 420 are formed along the length of each side of the wiring harness 400. The number of notches 420 varies from one to several, and they are preferably arranged symmetrically. However, they can also be arranged asymmetrically or unilaterally as needed. When the airbag deploys, the impact, temperature, and stretching or bending deformation of the airbag cover are utilized to sever the wiring harness, disconnecting the power supply to the illuminated logo and preventing electrical short circuits that could cause fires and other safety hazards. Two or more fixed windows 430 are located in the center of the wiring harness 400, primarily securing the wiring harness.

[0063] The wiring harness 400 primarily provides power and LIN network communication, and is comprised of 3 to 5 channels of wire. A shielding layer can be added as needed to meet the EMC (electromagnetic compatibility) performance requirements of the electrical system. The controller 343 connects to the vehicle network via the LIN line, receives vehicle control commands, and drives the LED lamp beads 342 to dim, change color, flash, and perform other effects, beautifying the interior environment and providing optical alarms and indications. The LED lamp beads 342, controller 343, and other electronic components are preferably mounted on the front of the substrate 341. An adhesive layer (not shown) bonds the light guide plate 310 and the light-emitting circuit board 340 together to prevent electronic components from falling out and causing harm to the driver and passengers when the airbag is deployed.

[0064] See also Figure 9 and Figure 10The logo mounting groove 510 of the airbag cover 500 is provided with a wiring harness window 540 to facilitate the wiring harness 400's connection to the vehicle's control system. The back of the airbag cover 500 is provided with a wall 550 and a tearing portion 560. The tearing portion 560 divides the back of the airbag cover 500, located in the middle of the wall 550, into one to five cover units 570. The illuminated logo assembly is mounted on one of the cover units 570. A window (not shown) is provided at the junction of this cover unit 570 and the wall 550. The door cover is provided with retaining ribs, preferably 0.5 mm to 1.5 mm thick and 0.5 mm to 2 mm high. Two or more fixing ribs are provided in the middle of the retaining ribs, preferably 0.5 mm to 1.5 mm thick and 3 mm to 12 mm wide. The ends of the fixing ribs are formed into undercuts using either heat-melt welding or ultrasonic welding.

[0065] The wiring harness 400 is preferably arranged on the cover unit where the luminous logo is located. Of course, the wiring harness 400 can also be arranged on other cover units, and correspondingly, the window, the retaining rib and the fixing rib can also be set on other cover units. The wiring harness 400 is arranged along the channel set in the middle of the retaining rib and extends to the outside of the airbag through the window. It should be pointed out that the window is not necessary. When the window is cancelled, the wiring harness 400 is arranged along the channel set in the middle of the retaining rib, and when it reaches the root of the cover unit, it extends to the outside of the airbag along the inner side of the wall 550. When the wiring harness 400 crosses the tear portion 560, the wiring harness 400 above the tear portion 560 is designed with cuts 420 on both sides or one side, which is conducive to the smooth opening of the airbag cover 500 when it is detonated, and reduces the influence of the arrangement of the wiring harness 400 on the detonation performance of the airbag cover 500.

[0066] The specific installation sequence of the automotive luminous emblem assembly of the present invention is:

[0067] 1. Assemble the logo cover 100, logo body 200, backlight module 300 and wiring harness 400 together;

[0068] 2. The end of the wiring harness 400 passes through the wiring harness passing window 540 of the airbag cover 500;

[0069] 3. Insert the mounting legs 130 of the logo cover 100 into the mounting legs 520 of the airbag cover 500;

[0070] 4. Embed the entire luminous logo into the logo mounting groove 510 of the airbag cover 500;

[0071] 5. Place the airbag cover 500 and the luminous logo upside down in the crimping jig. The press head bends the several mounting legs 130 of the logo cover 100 and buckles them into the leg grooves 530. The retaining ribs 531 can prevent the mounting legs 130 from being pulled out when the airbag is detonated. The undercuts 531a are to further enhance the anti-slip effect of the retaining ribs 531. Of course, the undercuts 531a are not necessary and can be omitted to save costs.

[0072] Example 2

[0073] The automotive luminous emblem assembly of this embodiment can meet the need of designing a traditional injection-molded emblem into a luminous emblem without changing the original effect of the emblem. The structure of the automotive luminous emblem assembly of this embodiment is roughly the same as that of the automotive luminous emblem assembly of Example 1. The main difference lies in the structure of the emblem cover 100a and the emblem body 200a. Figure 11 and Figure 12 The logo cover plate 100a can be shaped like a circle, oval, elongated strip, shield, or any other arbitrary shape. It is preferably made of sheet metal using a sheet metal forming process. The sheet metal is preferably made of aluminum, steel (iron), copper, or the like. The center of the logo cover plate 100a is hollowed out to form light-emitting windows 110a, corresponding to the portion of the logo surface that is to be illuminated. The number of light-emitting windows 110a can range from one to several. The cross-sectional shape of the light-emitting windows 110a is preferably a character, pattern, regular geometric figure, or other arbitrary shape, allowing light to be emitted through the hollowed-out portion. To strengthen the bond between the logo cover plate 100a and the logo body 200a, a plurality of bonding windows 120a are circumferentially spaced apart along the perimeter of the logo cover plate 100a. The cross-sectional shape of the bonding windows 120a is preferably circular, oval, rectangular, or any other geometric shape. The number of bonding windows 120a can range from three to several. The back of the logo cover 100a is formed using a sheet metal forming process to create a cavity (not shown) that can accommodate the backlight module. The number of these cavities can range from one to several, and some of these cavities can be partially interconnected. Mounting feet 130a are provided on the sides and center of the back of the logo cover 100a. The number of mounting feet 130a can range from two to several, distributed evenly or unevenly around the perimeter of the logo cover 100a. Other requirements for mounting feet 130a are consistent with those in Example A and are therefore not further described.

[0074] The material selection for logo body 200a is consistent with the requirements for logo cover plate 100a. Unlike Example 1, during the injection molding process of logo body 200a, logo cover plate 100a is pre-placed into the mold for logo body 200a, resulting in a composite body of logo body 200a and logo cover plate 100a, with logo cover plate 100a forming the framework of the composite body. Other structural features (such as bosses and grooves), materials, and surface treatment requirements for logo body 200a are consistent with those of Example 1 and are therefore not further described.

[0075] To prevent dislodgment during airbag deployment, traditional injection-molded logos feature numerous mounting posts within the center of the logo. These large, numerous mounting posts can interfere with the backlight module's placement. The automotive illuminated logo assembly in this embodiment incorporates a metal logo cover plate 100a embedded within the injection-molded logo body 200a. The thin metal mounting legs 130a minimize the impact of these legs on the backlight module and further enhance the strength of the logo body 200a, providing excellent practicality. It should be noted that the logo cover plate 100a also functions as a light shield, simplifying the light-shielding process for the illuminated logo. Adjusting the size and shape of the window 120a can further optimize the logo's luminous effect.

[0076] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A luminous logo assembly for a car, characterized in that: The system comprises a logo cover, a logo body, a backlight module, a wiring harness, and an airbag cover. A logo mounting groove is formed on the surface of the airbag cover. The backlight module is disposed in the logo mounting groove of the airbag cover. The logo body is disposed in the logo mounting groove of the airbag cover and is located on the surface of the backlight module. The logo cover is pressed into the logo mounting groove of the airbag cover and presses the logo body and the backlight module tightly. One end of the wiring harness is connected to the backlight module, and the other end thereof passes through the airbag cover and is connected to the vehicle control system. A plurality of mounting legs are formed at circumferential intervals at the circumferential edge of the back side of the logo cover plate, each mounting leg is provided with an axially extending anti-slip notch, each mounting leg is provided with a weakened hole at the bend, a plurality of leg mounting through holes are provided at the circumferential edge of the bottom surface of the logo mounting groove of the airbag cover plate, which are in a one-to-one correspondence with the plurality of mounting legs, a leg groove is formed at a position on the back side of the airbag cover plate corresponding to each leg mounting through hole, and a retaining rib is formed on each leg groove; during press-fitting, each mounting leg on the logo cover plate correspondingly passes through the leg mounting through hole of the airbag cover plate, and then the portion of each mounting leg passing through the leg mounting through hole is bent along the weakened hole and fastened into the leg groove, and the anti-slip notch on each mounting leg is correspondingly fastened to the retaining rib of each leg groove to prevent the logo cover plate from falling off the airbag cover plate; When the anti-slip notch on each mounting leg is correspondingly engaged with the retaining rib of each leg groove, the outer end of each retaining rib is processed by welding technology so that the outer end of each retaining rib forms an undercut that presses the mounting leg.

2. The automotive luminous emblem assembly according to claim 1, wherein: At least one light-emitting window is formed by hollowing out a portion of the logo cover plate that needs to emit light.

3. The automotive luminous emblem assembly according to claim 1, wherein: A receiving cavity for receiving the logo body and the backlight module is formed on the back side of the logo cover.

4. The automotive luminous emblem assembly according to claim 1, wherein: The logo body adopts a flat plate, a one-way arc surface, or a two-way arc surface thin sheet structure whose outer contour matches the logo cover.

5. The automotive luminous emblem assembly according to claim 1, wherein: A boss matching the light-emitting window of the logo cover is formed on the front surface of the logo body. The boss passes through the light-emitting window and is flush with the surface of the logo cover or slightly protrudes from the surface of the logo cover.

6. The automotive luminous emblem assembly according to claim 5, wherein: At least one concave surface is provided on the front surface of the logo body, and the concave surface is made into a color pattern different from other parts by adopting silk screen printing, spraying, electroplating, and vacuum coating processes.

7. The automotive luminous emblem assembly according to claim 1, wherein: A groove for accommodating the backlight module is formed on the back surface of the logo body.

8. The automotive luminous emblem assembly according to claim 1, wherein: A first film layer and a second film layer are sequentially arranged on the front side of the logo body from top to bottom.

9. The automotive luminous emblem assembly according to claim 1, wherein: The backlight module includes a light-emitting circuit board, a light guide plate, a first light-reflecting film and a second light-reflecting film. The light guide plate covers the light-emitting circuit board, the first light-reflecting film covers the front surface of the light guide plate, and the second light-reflecting film covers the back surface of the light guide plate.

10. The automotive luminous emblem assembly according to claim 9, wherein: The light guide plate adopts a flat plate, a one-way arc surface, a two-way arc surface or a thin sheet structure with an outer contour matching the logo body.

11. The automotive luminous emblem assembly according to claim 9, wherein: A plurality of light-scattering particles are arranged at intervals on the back surface of the light guide plate.

12. The automotive luminous emblem assembly according to claim 9, wherein: The back surface of the light guide plate is formed with grooves or through holes that can accommodate electronic components on the surface of the light-emitting circuit board.

13. The automotive luminous emblem assembly according to claim 9, wherein: A plurality of light-transmitting holes are arranged at intervals on the first reflective film.

14. The automotive luminous emblem assembly according to claim 9, wherein: The light-emitting circuit board includes a substrate, a plurality of LED lamp beads and a controller. The plurality of LED lamp beads are integrated on the substrate, and the controller is integrated on the substrate.

15. The automotive luminous emblem assembly according to claim 14, wherein: The LED lamp beads are side-emitting LED lamp beads or front-emitting LED lamp beads.

16. The automotive luminous emblem assembly according to claim 14, wherein: The plurality of LED lamp beads are arranged below the non-luminous area of ​​the logo body, or a light shielding film is provided on the front surface of the light guide plate at a position above the plurality of LED lamp beads.

17. The automotive luminous emblem assembly according to claim 14, wherein: A plurality of deformation windows are spaced apart at the middle position of the substrate so as to make the substrate easy to deform.

18. The automotive luminous emblem assembly according to claim 14, wherein: The wiring harness adopts a flexible circuit board, one end of which is integrated with the substrate; or, the wiring harness adopts a flexible flat cable, one end of which is connected to the substrate by welding; or, the wiring harness adopts a flat cable structure, one end of which is connected to the substrate by welding.

19. The automotive luminous emblem assembly according to claim 18, wherein: One end of the wiring harness connected to the vehicle control system is provided with a connector that plugs and matches with the vehicle control system.

20. The automotive luminous emblem assembly according to claim 18, wherein: At least one notch is formed at intervals along the length direction on both side edges of the wire harness.

21. The automotive luminous emblem assembly according to claim 18, wherein: At least one fixing window for fixing the wire harness is provided on the wire harness.

Images