Automobile ceiling lamp assembly and automobile

Abstract

The utility model provides an automobile ceiling lamp assembly and an automobile, and belongs to the technical field of automobile parts, the automobile ceiling lamp assembly comprises a panel, the panel comprises a light-proof panel main body, a light-transmitting illumination lens and a light-transmitting pattern part, the inner side of the panel main body is provided with a first accommodating cavity, and the position of the first accommodating cavity corresponds to the position of the light-transmitting pattern part; the backlight key module is installed in the first containing cavity, the backlight key module comprises a light guide plate and a touch control layer, and the position of the touch control layer corresponds to the position of the light-transmitting pattern part; the substrate is electrically connected with the touch control layer, an illumination light source and a pattern light source are arranged on the substrate, the illumination light source corresponds to the illumination lens in position, and the light emitting direction of the pattern light source faces the side face of the light guide plate and is converted into surface light through the light guide plate to be emitted out of the light-transmitting pattern part; and the rear cover is connected to the panel, the substrate is clamped between the rear cover and the panel, and the cavity opening of the first accommodating cavity is sealed. According to the automobile ceiling lamp assembly, the automobile ceiling lamp assembly is thinned.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and relates to an automotive roof light assembly, particularly an automotive vehicle with an automotive roof light assembly. Background Technology

[0002] In existing technologies, the core functions of dome lights or map lights in automobiles mainly include lighting, various switch control functions, switch pattern backlighting, and switch status indication. Some dome light assemblies with more functions also include microphones, speakers, and SOS buttons. The more functions a dome light assembly has, the larger its size and the higher its cost. In the current context of advocating energy conservation and cost reduction, how to reduce the size and cost of dome lights is an urgent issue that needs to be studied. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a thinner design for an automotive roof light assembly that reduces manufacturing costs.

[0004] The objective of this utility model can be achieved through the following technical solution: an automotive roof light assembly, comprising:

[0005] The panel includes an opaque panel body, a light-transmitting illumination lens, and a light-transmitting pattern portion. A first receiving cavity is provided on the inner side of the panel body, and the position of the first receiving cavity corresponds to the position of the light-transmitting pattern portion.

[0006] A backlit button module is installed in the first receiving cavity, and the backlit button module includes a light guide plate and a touch layer, wherein the position of the touch layer corresponds to the position of the light-transmitting pattern portion;

[0007] The substrate is electrically connected to the touch layer. The substrate is provided with an illumination source and a pattern light source. The illumination source and the illumination lens are positioned correspondingly. The light emission direction of the pattern light source is towards the side of the light guide plate and is converted into surface light emission by the light guide plate and emitted into the light-transmitting pattern part.

[0008] The back cover is attached to the panel, clamps the substrate between the back cover and the panel, and seals the opening of the first receiving cavity.

[0009] In the aforementioned automotive dome light assembly, the touch layer is a touch film, which is located on the inner side of the panel body and is attached to the light-transmitting pattern section.

[0010] The aforementioned automotive dome light assembly also includes a light-diffusing bracket made of a milky white translucent material. The outer surface shape of the light-diffusing bracket matches the inner surface shape of the corresponding panel body. The light-diffusing bracket has a strip-shaped groove along the light emission direction of the pattern light source, and the light guide plate is embedded in the strip-shaped groove. The groove wall of the strip-shaped groove defines the two sides of the corresponding light guide plate perpendicular to the light emission direction of the pattern light source. The cavity wall of the first receiving cavity defines the two sides of the corresponding light guide plate along the light emission direction of the pattern light source.

[0011] In the aforementioned automotive dome light assembly, the touch film is attached to one side surface of the light-diffusing bracket by adhesive bonding, and the light-diffusing bracket is located between the touch film and the light guide plate. The trigger end on the touch film is positioned opposite to the light-transmitting pattern portion, and the electrical connection end on the touch film extends outward and protrudes from the corresponding opening of the first receiving cavity, forming a plug-in electrical connection with the connector on the substrate.

[0012] In the aforementioned automotive dome light assembly, the light guide plate has multiple recesses on the side facing the substrate for reflecting light.

[0013] The aforementioned automotive dome light assembly also includes a one-way light-transmitting layer. The lighting lens includes a light-emitting surface and a light-receiving surface, and the one-way light-transmitting layer covers the light-emitting surface. The panel body includes an outer surface, which is disposed on the same side as the light-emitting surface. There is a height difference between the outer surface and the light-emitting surface, and the thickness of the one-way light-transmitting layer is less than or equal to the value of the height difference.

[0014] In the aforementioned automotive dome light assembly, a serrated portion is provided on the light-receiving surface, and the serrated portion includes multiple rows of teeth arranged in an array. Each row of teeth is arranged in a wave shape, and each row of teeth is provided with multiple teeth. Any tooth is located at the crest of the wave on one side along the length direction of the row of teeth, and at the trough on the other side.

[0015] In the aforementioned automotive dome light assembly, the touch layer is an annular copper foil on the surface of the substrate. The annular copper foil is integrally formed with the substrate and corresponds to the position of the light-transmitting pattern portion.

[0016] In the aforementioned automotive dome light assembly, the panel includes a light-transmitting body. The light-transmitting body, the lighting lens, and the panel body are integrally molded by two-color injection molding. The inner surface of the light-transmitting body has a light-shielding layer, and a portion of the light-shielding layer is hollowed out to form a light-transmitting pattern.

[0017] This utility model also provides a car, including a car roof light assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) The present invention provides an automotive roof light assembly that uses a touch film or annular copper foil to turn on or off, thereby reducing the volume of the entire automotive roof light assembly, making the automotive roof light assembly thinner, and reducing the manufacturing cost of the automotive roof light assembly.

[0020] (2) A height difference is formed between the outer surface and the light-emitting surface, which can be compensated by the thickness of the one-way light-transmitting layer, so that the light-emitting surface covered with the one-way light-transmitting layer is flush with the outer surface or the one-way light-transmitting layer is recessed into the light-emitting surface, thereby improving the appearance of the entire automotive dome light assembly. In addition, due to the height difference between the outer surface and the light-emitting surface, the one-way light-transmitting layer covered on the light-emitting surface forms a similar "embedded" installation, "hiding" each side of the one-way light-transmitting layer, thereby improving the reliability of the installation of the one-way light-transmitting layer.

[0021] (3) By setting a serrated part on the light-receiving surface, the light emitted from the lighting source can be refracted when it enters the lighting lens, thereby adjusting the light transmission path and improving the light utilization rate.

[0022] (4) By using a stepped fit between the lighting lens and the panel body, the contact area between the two is increased. On the other hand, since the lighting lens and the panel body are made of different materials, there may be a risk of cracking after long-term use. However, with the stepped fit, even if the two crack, the panel body can still "support" the lighting lens, thus improving the reliability of the connection between the two. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an automotive roof light assembly according to this utility model.

[0024] Figure 2 This is a structural schematic diagram of an automotive roof light assembly from another perspective.

[0025] Figure 3 yes Figure 2 The cross-sectional view shown is taken along the cutting line AA.

[0026] Figure 4 This is a partial structural diagram of an automotive roof light assembly according to the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the back cover in a preferred embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the structure of the illumination lens in a preferred embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the substrate structure in a preferred embodiment of the present invention.

[0030] Figure 8 This is an exploded view of an automotive roof light assembly according to Embodiment 2 of this utility model.

[0031] Figure 9 yes Figure 8 The diagram shows a partial structure.

[0032] Figure 10 yes Figure 8 The sectional view shown Figure 1 .

[0033] Figure 11 yes Figure 8 The sectional view shown Figure 2 .

[0034] In the picture,

[0035] 100. Panel body; 110. Outer surface; 120. Inner surface; 130. Protrusion; 140. First rib; 150. Positioning post; 160. First connecting post; 161. First connecting hole; 180. First receiving cavity; 181. Second protrusion; 190. Second receiving cavity; 191. Third protrusion; 1100. Third receiving cavity; 1110. Slot; 1200. Positioning protrusion;

[0036] 200, Illuminating lens; 210, Light-emitting surface; 220, Light-receiving surface; 230, Serrated portion; 231, Tooth row; 240, Recess; 241, First stepped surface; 242, Second stepped surface;

[0037] 300. One-way light transmission layer;

[0038] 400, back cover; 410, splicing surface; 420, cavity; 430, second rib; 440, positioning hole; 450, second connecting post; 451, second connecting hole;

[0039] 500, substrate; 510, lighting source; 520, annular copper foil; 530, patterned light source; 550, connector; 560, positioning recess;

[0040] 600. Light guide plate; 610. Recess;

[0041] 700. Transparent body; 710. Transparent pattern section;

[0042] 800. Backlit button module; 820. Light-diffusing bracket; 821. Strip groove; 822. First rib; 830. Touch film; 831. Trigger terminal; 832. Electrical connection terminal;

[0043] 900, Indicator. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] 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.

[0046] Example 1

[0047] like Figures 1 to 7 As shown, the present invention provides an automotive roof light assembly, comprising:

[0048] The panel includes an opaque panel body 100, a light-transmitting illumination lens 200, and a light-transmitting pattern section 710;

[0049] The backlit button module 800 includes a light guide plate 600 and a touch layer, wherein the position of the touch layer corresponds to the position of the light-transmitting pattern section 710;

[0050] The substrate 500 is electrically connected to the touch layer. An illumination source 510 and a pattern light source 530 are provided on the substrate. The illumination source 510 is positioned corresponding to the illumination lens 200. The light emission direction of the pattern light source 530 is towards the side of the light guide plate 600 and is converted into surface light emission by the light guide plate 600 and emitted into the light-transmitting pattern part 710.

[0051] The back cover 400 is connected to the panel, and the substrate 500 is clamped between the back cover 400 and the panel.

[0052] In the research on vehicle dome light assemblies, there are two main factors that limit the size of the vehicle dome light assembly from becoming smaller. First, the function switches in the vehicle light assembly are usually mechanical buttons. The triggering of mechanical buttons requires a certain travel, and in order to accommodate the size of the user's fingers for easy operation, the mechanical buttons themselves need to be of a certain size. Second, the backlighting of the switch pattern. In order for users to see the position of the switch in a dark environment, the position of the switch needs to have a light-transmitting pattern of a certain size. However, the divergence angle of the internal light source is limited. In order to illuminate the entire light-transmitting pattern, there needs to be a certain distance between the internal light source and the light-transmitting pattern. These two factors together have resulted in the current vehicle dome light assembly being unable to be made smaller.

[0053] This embodiment provides an automotive dome light assembly that replaces the original mechanical button triggering with touch-sensitive triggering. Simultaneously, the backlight pattern of the switch adopts a surface-emitting light-emitting design in the form of a light guide plate. This combination reduces the thickness of the automotive dome light assembly, meeting the requirements for thinness and cost reduction. The surface-emitting light-emitting design in the form of a light guide plate not only reduces size but also allows multiple switch backlight patterns to be illuminated with only one light source, reducing the number of light sources and saving costs.

[0054] Preferably, the touch layer is an annular copper foil 520 on the surface of the substrate 500. The annular copper foil 520 is integrally formed with the substrate 500 and corresponds to the position of the light-transmitting pattern portion 710.

[0055] Furthermore, the annular copper foil 520 is arranged in a closed ring shape, with one part of the annular copper foil 520 corresponding to the position of the light-transmitting pattern part 710, and the other part of the annular copper foil 520 corresponding to the position of the illumination lens 200.

[0056] It is worth mentioning that, unlike existing technologies that use structures such as metal touch coils and conductive rubber to turn the light source on and off, in this embodiment, the annular copper foil 520 is a thin, closed ring. The annular copper foil 520 is essentially the same as the copper lines on the substrate 500. Therefore, the annular copper foil 520 and the substrate 500 are integrally formed. Using the annular copper foil 520 to light the light source retains the touch function without increasing the cost of the substrate 500. On the contrary, compared with existing technologies, it can save the cost of the touch module, save production costs, improve product competitiveness, and simplify the internal structure of the automotive dome light assembly, thereby further reducing the thickness of the automotive dome light assembly and realizing the development of a thinner and lighter automotive dome light assembly.

[0057] Additionally, the annular copper foil 520 typically refers to a material layer used in capacitive touchscreen technology that enables the screen to recognize touch input. This touch layer is usually made of a transparent conductive material, most commonly indium tin oxide (ITO). When a user's finger approaches or touches the switch surface on the car dome light assembly, the capacitance change signal is converted into a voltage signal, which is output as high or low levels to turn the light source on or off, thus achieving touch control of the car dome light assembly.

[0058] Furthermore, a plurality of recesses 610 for reflecting light are provided on the side surface of the light guide plate 600 facing the substrate 500, and the plurality of recesses 610 are evenly distributed on the light guide plate 600.

[0059] It's worth noting that the light guide plate 600 is made of optical-grade acrylic / PC sheet, a high-tech material with an extremely high refractive index and no light absorption. Light guide points, or recesses 610, are printed on the bottom surface of the optical-grade acrylic sheet using techniques such as laser engraving, V-shaped cross-grid engraving, or UV screen printing. The optical-grade acrylic sheet receives light emitted from the light source and propagates through total internal reflection on its inner surface. When light hits each light guide point, the presence of these points disrupts the internal total internal reflection condition, causing the reflected light to diffuse in various angles before exiting from the front of the light guide plate. Through various density and size light guide points, the light guide plate can emit light uniformly.

[0060] Preferably, the panel further includes a light-transmitting body 700, and the light-transmitting body 700, the illumination lens 200 and the panel body 100 are integrally formed by two-color injection molding. The inner surface of the light-transmitting body 700 has a light-shielding layer, and a portion of the light-shielding layer is hollowed out to form a light-transmitting pattern portion 710.

[0061] In this embodiment, the light-transmitting body 700, the illumination lens 200, and the panel body 100 are integrated into a single structure using a two-color injection molding technique. This not only simplifies the structure and assembly process of the entire automotive roof light assembly but also reduces the production cost of the automotive roof light assembly.

[0062] It is worth mentioning that the light-transmitting body 700 is provided with multiple light-transmitting pattern sections 710. When the pattern light source 530 corresponding to the light-transmitting body 700 is turned on, the multiple light-transmitting pattern sections 710 are lit up simultaneously, thereby improving the light utilization rate, reducing the number of pattern light sources 530, and reducing the manufacturing cost of the car roof light assembly.

[0063] Preferably, the illumination lens 200 includes a light-emitting surface 210 and a light-receiving surface 220, wherein the light-emitting surface of the illumination source 510 faces the light-receiving surface 220 and is close to the light-receiving surface 220; it also includes a one-way light-transmitting layer 300, which covers the light-emitting surface 210 or the light-receiving surface 220. When the one-way light-transmitting layer 300 covers the light-emitting surface 210, the shape of the one-way light-transmitting layer 300 is adapted to the shape of the light-emitting surface 210; when the one-way light-transmitting layer 300 covers the light-receiving surface 220, the shape of the one-way light-transmitting layer 300 is adapted to the shape of the light-emitting surface 210.

[0064] In this embodiment, a one-way light-transmitting layer 300 is covered on one side of the light-emitting surface 210 or the light-receiving surface 220 of the illumination lens 200 to prevent the user from seeing the internal structure of the car roof light assembly when it is not lit, thereby improving the overall appearance of the car roof light assembly.

[0065] In addition, when the one-way light-transmitting layer 300 covers the light-emitting surface 210, the shape of the one-way light-transmitting layer 300 matches the shape of the light-emitting surface 210; when the one-way light-transmitting layer 300 covers the light-receiving surface 220, the shape of the one-way light-transmitting layer 300 matches the shape of the light-emitting surface 210, thereby achieving full coverage of the illumination lens 200 by the one-way light-transmitting layer 300.

[0066] Furthermore, the panel body 100 is made of an opaque material, while the lighting lens 200 is made of a light-transmitting material. Notably, no light-transmitting layer is provided on the same side of the panel body 100 and the light-emitting surface 210 of the lighting lens 200, thereby avoiding light leakage and improving the reliability of the automotive dome light assembly when it emits light.

[0067] Preferably, the panel body 100 includes an outer surface 110 and an inner surface 120, and the outer surface 110 is disposed on the same side as the light-emitting surface 210. A one-way light-transmitting layer 300 covers the light-emitting surface 210, there is a height difference between the outer surface 110 and the light-emitting surface 210, and the thickness of the one-way light-transmitting layer 300 is less than or equal to the height difference.

[0068] It is worth mentioning that the one-way light-transmitting layer 300 has a certain thickness. When the one-way light-transmitting layer 300 covers the light-receiving surface 220, since the light-receiving surface 220 is located inside the housing, although the lighting source 510 is close to the light-receiving surface 220, there is still a gap between the two. Therefore, even if the one-way light-transmitting layer 300 covers the light-receiving surface 220, it will not affect the transmission of light. However, when the one-way light-transmitting layer 300 covers the light-emitting surface 210, the light-emitting surface 210 covered by the one-way light-transmitting layer 300 may be higher than the outer surface 110 of the panel body 100. On the one hand, when the lighting source 510 needs to be turned on or off, the user's finger will come into contact with the light-emitting surface 210. After repeated use, the one-way light-transmitting layer 300 and the light-emitting surface 210 may slip relative to each other, resulting in some areas of the light-emitting surface 210 not being covered by the one-way light-transmitting layer 300. Or, children may "poke" the one-way light-transmitting layer 300 with their fingers out of curiosity, which will also result in some areas of the light-emitting surface 210 not being completely covered by the one-way light-transmitting layer 300. Moreover, the "protruding" one-way light-transmitting layer 300 is easy to "poke off". In addition, since the one-way light-transmitting layer 300 is higher than the outer surface 110, it affects the appearance of the entire car dome light assembly.

[0069] Therefore, in this embodiment, a height difference is formed between the outer surface 110 and the light-emitting surface 210, and this height difference can be compensated by the thickness of the one-way light-transmitting layer 300, so that the light-emitting surface 210 covered by the one-way light-transmitting layer 300 is flush with the outer surface 110 or the one-way light-transmitting layer 300 is recessed into the light-emitting surface 210, thereby improving the appearance of the entire automotive dome light assembly. In addition, since a height difference is formed between the outer surface 110 and the light-emitting surface 210, the one-way light-transmitting layer 300 covering the light-emitting surface 210 forms a similar "embedded" installation, "hiding" each side of the one-way light-transmitting layer 300, thereby improving the reliability of the installation of the one-way light-transmitting layer 300.

[0070] Preferably, the light-receiving surface 220 is provided with a serrated portion 230, and the serrated portion 230 includes a plurality of rows of teeth arranged in an array, wherein each row of teeth is arranged in a wave shape, and each row of teeth is provided with a plurality of teeth 231, wherein any one tooth 231 is located at the crest of the wave on one side along the length direction of the row of teeth, and the other side of the tooth 231 is located at the trough of the wave.

[0071] It is further pointed out that one side of the tooth surface of the tooth 231 is flat, and the opposite side is convex.

[0072] In this embodiment, by providing a serrated portion 230 on the light-receiving surface 220, the light emitted from the illumination source 510 can be refracted when it enters the illumination lens 200, thereby adjusting the light transmission path and improving the light utilization rate.

[0073] Preferably, the panel body 100 and the illumination lens 200 are joined in a stepped manner, wherein a recess 240 is provided along the edge of the illumination lens 200, and a protrusion 130 is provided on the panel body 100 to cooperate with the recess 240.

[0074] Furthermore, the recess 240 is stepped and annular along the edge of the illumination lens 200. The recess 240 includes a first stepped surface 241 and a second stepped surface 242. This structure is similar to having a through-groove on the panel body 100, with the area of ​​the through-groove slightly larger than the area enclosed by the first stepped surface 241 and smaller than the area enclosed by the second stepped surface 242. When the illumination lens 200 is connected to the panel body 100, the illumination lens 200 is inserted along the inner surface 120 towards the outer surface 110 of the panel body 100, so that the outer region of the through-groove on the inner surface 120 just abuts against the recess 240.

[0075] In this embodiment, the stepped fit between the illumination lens 200 and the panel body 100 increases the contact area between the two. On the other hand, since the illumination lens 200 and the panel body 100 are made of different materials, there may be a risk of cracking after long-term use. However, the stepped fit ensures that even if the two crack, the panel body 100 can still "support" the illumination lens 200, thus improving the reliability of the connection between the two.

[0076] Preferably, a first clamping portion is provided on the inner surface 120; the rear cover 400 includes a splicing surface 410, and a second clamping portion is provided on the splicing surface 410, wherein the substrate 500 is clamped between the first clamping portion and the second clamping portion.

[0077] More preferably, the first clamping part includes a first rib 140 disposed on the inner surface 120; the second clamping part includes a cavity 420 formed by recessing along the splicing surface 410, and a second rib 430 disposed in the cavity 420, wherein the substrate 500 is clamped between the first rib 140 and the second rib 430.

[0078] In this embodiment, the substrate 500 is sandwiched between the first rib 140 and the second rib 430, which improves the reliability of the substrate 500 installation and the strength of the panel body 100 and the back cover 400. In addition, the second rib 430 is disposed in the cavity 420, so that a part of the structure of the substrate 500 can be located in the cavity 420, thereby reducing the thickness of the automotive dome light assembly and realizing the thinning development of the automotive dome light assembly.

[0079] In a further preferred embodiment, a positioning post 150 is provided on the inner surface 120 of the panel body 100, and a positioning hole 440 is provided on the bottom of the cavity 420 of the rear cover 400 to engage with the positioning post 150. A first connecting post 160 is also provided on the inner surface 120 of the panel body 100, and a first connecting hole 161 is provided in the first connecting post 160. A second connecting post 450 is provided on the bottom of the cavity 420 of the rear cover 400, and a second connecting hole 451 is provided in the second connecting post 450. The connection between the panel body 100 and the rear cover 400 is completed by fasteners passing through the first connecting hole 161 and the second connecting hole 451.

[0080] It is worth mentioning that, since the substrate 500 is sandwiched between the first rib 140 and the second rib 430, in order to achieve a reliable connection between the panel body 100 and the back cover 400, clearance holes can be provided at the corresponding positions of the substrate 500 to avoid structures such as the positioning post 150 and the first connecting post 160.

[0081] Example 2

[0082] like Figures 8 to 11 As shown, the present invention provides an automotive roof light assembly, comprising:

[0083] The panel includes an opaque panel body 100, a light-transmitting illumination lens 200, and a light-transmitting pattern portion 710. A first receiving cavity 180 is provided on the inner side of the panel body 100, and the position of the first receiving cavity 180 corresponds to the position of the light-transmitting pattern portion 710.

[0084] The backlight button module 800 is installed in the corresponding first receiving cavity 180, and the backlight button module 800 is provided with a light guide plate 600, a light doubling bracket 820 and a touch layer along the opening direction of the corresponding first receiving cavity 180.

[0085] The substrate 500 is electrically connected to the touch layer. An illumination source 510 and a pattern light source 530 are disposed on the substrate 500. The illumination source 510 is positioned corresponding to the illumination lens 200. The light emission direction of the pattern light source 530 is towards the side of the light guide plate 600 and is converted into surface light emission by the light guide plate 600.

[0086] The back cover 400 is connected to the panel body 100, clamps the substrate 500 between the back cover 400 and the panel body 100, and seals the opening of the first receiving cavity 180.

[0087] This utility model provides an automotive dome light assembly that replaces the original mechanical button triggering with touch layer triggering, thereby reducing the thickness of the automotive dome light assembly and meeting the requirements for thinness.

[0088] It is further pointed out that the touch layer is a touch film 830, which is located on the inner side of the panel body 100 and is attached to the light-transmitting pattern portion 710.

[0089] It is worth mentioning that a touch circuit is provided on the touch film 830, and the input and output signals are connected to the substrate 500. When a hand approaches the light-transmitting pattern part 710, the chip on the substrate 500 will perform a corresponding action.

[0090] Preferably, there are multiple first receiving cavities 180, and the position of each first receiving cavity 180 corresponds to the position of one portion of the light-transmitting pattern portion 710 among the multiple light-transmitting pattern portions 710; wherein, each touch film 830 is attached to the corresponding portion of the light-transmitting pattern portion 710 on the corresponding first receiving cavity 180.

[0091] In this embodiment, backlighting of multiple light-transmitting pattern sections 710 can be achieved by a single pattern light source 530, thereby improving light utilization and reducing the number of pattern light sources 530, thus reducing the manufacturing cost of the product.

[0092] Preferably, the light-diffusing bracket 820 is made of a milky white light-transmitting material, and the outer surface shape of the light-diffusing bracket 820 matches the inner surface shape of the panel body 100 at the corresponding position.

[0093] More preferably, a plurality of recesses 610 are provided on the side surface of the light guide plate 600 facing the substrate 500, and the plurality of recesses 610 are evenly distributed on the light guide plate 600.

[0094] It is worth mentioning that the typical light guide plate 600 is elongated, and the patterned light source 530 on the substrate 500 corresponds to one end of the light guide plate 600 along its length. When the patterned light source 530 is turned on, light enters from the side of the light guide plate 600, is converted into surface light by the light guide plate 600, and then enters the light-diffusing bracket 820. The light is then uniformized by the light-diffusing bracket 820 and passes through the light-transmitting pattern portion 710 on the panel body 100. At this time, people can see the light-emitting light-transmitting pattern portion 710, while the area outside the light-transmitting pattern portion 710 is in a non-light-emitting state. In addition, each backlight button module 800 corresponds to multiple light-transmitting pattern portions 710. When the patterned light source 530 corresponding to the backlight button module 800 is turned on, the multiple light-transmitting pattern portions 710 are lit simultaneously, thereby improving light utilization, reducing the number of patterned light sources 530, and reducing the manufacturing cost of the automotive dome light assembly.

[0095] Preferably, a strip-shaped groove 821 is provided on the light-shielding bracket 820 along the light emission direction of the pattern light source 530, and the light guide plate 600 is embedded in the strip-shaped groove 821. The groove wall of the strip-shaped groove 821 defines the two sides of the light guide plate 600 that are perpendicular to the light emission direction of the pattern light source 530; the cavity wall of the first receiving cavity 180 defines the two sides of the light guide plate 600 that are perpendicular to the light emission direction of the pattern light source 530.

[0096] In a further preferred embodiment, a first rib 822 is provided on the groove wall of the strip groove 821, and a second rib 181 is provided on the cavity wall of the first receiving cavity 180. The first rib 822 abuts against the two sides of the light guide plate 600 in the width direction, and the second rib 181 abuts against the two sides of the light guide plate 600 in the length direction. This limits the position of the light guide plate 600 in the light uniform bracket 820, thereby ensuring that there is no relative movement between the light guide plate 600 and the light uniform bracket 820 during vehicle operation.

[0097] Preferably, the touch film 830 is attached to one side surface of the light-diffusing bracket 820 by adhesive bonding, and the light-diffusing bracket 820 is located between the touch film 830 and the light guide plate 600. The trigger end 831 on the touch film 830 is disposed opposite to the light-transmitting pattern portion 710, and the electrical connection end 832 on the touch film 830 extends outward and protrudes from the cavity opening of the corresponding first receiving cavity 180, and forms a plug-in electrical connection with the connector 550 on the substrate 500.

[0098] It is worth mentioning that the bottom of the first receiving cavity 180 is hollowed out. The trigger end 831 of the touch film 830 is disposed on the surface of the touch film 830. The electrical connection end 832 of the touch film 830 extends outward from the edge of the touch film 830 and extends from the bottom of the first receiving cavity 180 to the opening of the first receiving cavity 180. Then it is bent and inserted into the connector of the substrate 500, thereby realizing the electrical connection between the touch film 830 and the substrate 500.

[0099] In this embodiment, the insertion and engagement between the electrical connection terminal 832 on the touch film 830 and the connector 550 on the substrate 500 is similar to the insertion and engagement between male and female snap fasteners. By adopting the male and female insertion and engagement, the reliability of the electrical connection between the touch film 830 and the substrate 500 is improved.

[0100] Preferably, the panel body 100 is further provided with a second receiving cavity 190 for mounting an indicator 900, and the light emission direction of the illumination source 510 on the substrate 500 corresponding to the position of the indicator 900 is perpendicular to the light emission direction of the pattern light source 530 that cooperates with the backlight button module 800. The bottom of the second receiving cavity 190 is hollowed out.

[0101] It is worth mentioning that when the illumination source 510 on the substrate 500 corresponding to the indicator 900 is turned on, the emitted light passes through the indicator 900, allowing the user to see the illuminated surface of the indicator 900, thus achieving backlighting of the indicator 900. The illumination of the indicator 900 can then inform the user whether the current car dome light assembly is in use.

[0102] More preferably, a third rib 191 is provided on the cavity wall of the second receiving cavity 190, and the position of the indicator 900 in the second receiving cavity 190 is defined by the third rib 191, so as to prevent the indicator 900 from moving relative to the second receiving cavity 190 during vehicle operation and improve the reliability of the indicator 900 installation.

[0103] Preferably, the panel body 100 is further provided with a third receiving cavity 1100 for mounting the illumination lens 200, and the light emission direction of the illumination source 510 on the substrate 500 corresponding to the position of the illumination lens 200 is perpendicular to the light emission direction of the illumination source 510 cooperating with the backlight button module 800. The bottom of the third receiving cavity 1100 is hollowed out.

[0104] Furthermore, the illumination lens 200 is disposed on both sides of the guide structure, that is, generally located on both sides of the panel body 100. When the illumination source 510 on the substrate 500 corresponding to the illumination lens 200 is turned on, the emitted light is refracted by the illumination lens 200 and then passes through the hollow part of the third receiving cavity 1100 and is directed towards the illumination target area, thereby facilitating other operations by the user.

[0105] More preferably, a slot 1110 is provided on the cavity wall of the third receiving cavity 1100, and the slot 1110 engages with the support foot on the illumination lens 200, thereby fixing the illumination lens 200 in the third receiving cavity 1100, preventing the illumination lens 200 from moving relative to the third receiving cavity 1100 during vehicle operation, and improving the reliability of the installation of the illumination lens 200.

[0106] It is worth mentioning that the limiting structure of the indicator 900 and the illumination lens 200 can be designed according to the specific structure of the indicator 900 and the illumination lens 200, and is not limited to limiting the indicator 900 by the third rib 191 and limiting the illumination lens 200 by the slot 1110.

[0107] Preferably, a positioning structure is provided between the panel body 100 and the substrate 500 to facilitate a reliable connection between the substrate 500 and the panel body 100. The panel body 100 is provided with a positioning protrusion 1200, and the substrate 500 is provided with a corresponding positioning recess 560, wherein the positioning recess 560 and the positioning protrusion 1200 form an interlocking fit.

[0108] In this embodiment, the positioning protrusion 1200 and the positioning recess 560 can be interchanged, that is, the positioning recess 560 is provided on the panel body 100, and the corresponding positioning protrusion 1200 is provided on the substrate 500.

[0109] It is worth mentioning that the positioning protrusion 1200 is a positioning post provided on the panel body 100, and the positioning recess 560 is a positioning hole provided on the substrate 500.

[0110] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" 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 those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0111] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0112] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An automotive dome light assembly, characterized by, The application relates to a backlight key module, which comprises the following parts: a panel, a backlight key module, a substrate and a back cover. The panel comprises a non-transparent panel body (100), a light-transmitting illumination lens (200) and a light-transmitting pattern part (710), the inner side of the panel body (100) is provided with a first accommodating cavity (180), and the position of the first accommodating cavity (180) corresponds to the position of the light-transmitting pattern part (710). The backlight key module (800) is installed in the first accommodating cavity (180), and the backlight key module (800) comprises a light guide plate (600) and a touch layer, wherein the position of the touch layer corresponds to the position of the light-transmitting pattern part (710). The substrate (500) is electrically connected with the touch layer, wherein the substrate (500) is provided with an illumination light source (510) and a pattern light source (530), the position of the illumination light source (510) corresponds to the position of the illumination lens (200), the light emission direction of the pattern light source (530) is towards the side surface of the light guide plate (600) and the light is converted by the light guide plate (600) into surface light emission out of the light-transmitting pattern part (710). The back cover (400) is connected to the panel, the substrate (500) is clamped between the back cover (400) and the panel, and the cavity opening of the first accommodating cavity (180) is sealed.

2. The automotive dome light assembly of claim 1, wherein, The touch layer is a touch film (830), which is arranged on the inner side of the panel body (100) and is attached to the light-transmitting pattern part (710).

3. The automotive dome light assembly of claim 2, wherein, The light uniformity support (820) is made of milky white light-transmitting material, the outer surface shape of the light uniformity support (820) matches the inner surface shape of the corresponding position of the panel body (100), the light uniformity support (820) is provided with a strip-shaped groove (821) along the light emission direction of the pattern light source (530), the light guide plate (600) is embedded in the strip-shaped groove (821), the groove wall of the strip-shaped groove (821) limits the two sides of the light guide plate (600) which are perpendicular to the light emission direction of the pattern light source (530), and the cavity wall of the first accommodating cavity (180) limits the two sides of the light guide plate (600) along the light emission direction of the pattern light source (530).

4. The automotive dome light assembly of claim 3, wherein, The touch film (830) is connected to one side surface of the light uniformity support (820) by adhesion, the light uniformity support (820) is located between the touch film (830) and the light guide plate (600), the trigger end (831) of the touch film (830) is arranged opposite to the light-transmitting pattern part (710), the electric connection end (832) of the touch film (830) extends outward and extends out of the cavity opening of the corresponding first accommodating cavity (180), and forms plug-in electric connection with the connector (550) on the substrate (500).

5. The automotive dome light assembly of claim 1, wherein, The side surface of the light guide plate (600) towards the substrate (500) is provided with a plurality of pits (610) for reflecting light.

6. The automotive dome light assembly of claim 1, wherein, The illumination lens (200) comprises a light-out surface (210) and a light-receiving surface (220), and the unidirectional light-transmitting layer (300) is arranged on the light-out surface (210), wherein the panel body (100) comprises an outer surface (110), the outer surface (110) is arranged on the same side as the light-out surface (210), there is a height difference between the outer surface (110) and the light-out surface (210), and the thickness of the unidirectional light-transmitting layer (300) is less than or equal to the height difference.

7. The automotive headlamp assembly of claim 6, wherein, The light-receiving surface (220) is provided with a sawtooth part (230), and the sawtooth part (230) comprises a plurality of arrayed teeth, wherein each column of the teeth is arranged in a wave shape, and each column of the teeth is provided with a plurality of teeth (231), any one of the teeth (231) is located at a wave crest position along one side of the length direction of the tooth, and the other side of the tooth (231) is located at a wave trough position.

8. The automotive dome light assembly of claim 1, wherein, The touch layer is a ring-shaped copper foil (520) on the surface of a substrate (500), the ring-shaped copper foil (520) is integrally formed with the substrate (500) and corresponds to the position of the light-transmitting pattern part (710).

9. The automotive dome light assembly of claim 1, wherein, The panel comprises a light-transmitting body (700), the light-transmitting body (700), the illumination lens (200) and the panel body (100) are integrally formed by two-color injection molding, wherein the inner surface of the light-transmitting body (700) has a light-shielding layer, part of the area of the light-shielding layer is hollowed out and forms a light-transmitting pattern part (710).

10. An automobile characterized by comprising: The automobile roof lamp assembly comprises the panel according to any one of claims 1 to 9.

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