In-vehicle lighting device and vehicle

Abstract

The utility model discloses an in-vehicle lighting device and a vehicle. The in-vehicle light device comprises a flexible light-emitting body which is suitable for being unfolded or folded. The light-emitting body comprises a pattern film layer which is provided with a light-emitting face. After the pattern film layer is lightened, patterns on the pattern film layer are displayed on the light-emitting body. When the in-vehicle lighting device is used, the light-emitting body is unfolded to cover a vehicle ceiling, and the pattern film layer is lightened. Therefore, the luminous body can display the pattern of the pattern film layer. After the light-emitting body is rolled up, the skylight on the vehicle ceiling is not covered by the light-emitting body any more, and passengers can use the skylight according to needs. Therefore, the in-vehicle lighting device does not hinder the use of the skylight.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle technology, in particular to an in-vehicle lighting device. The present application also relates to a vehicle comprising such an in-vehicle lighting device. BACKGROUND

[0002] Some vehicles are equipped with a roof having a starry sky effect. For example, an interior layer having a plurality of optical fibers is arranged on the roof. The starting ends of the optical fibers are connected to a light source. When the light source is turned on, light is irradiated into the optical fibers and emitted from the ending ends of the optical fibers, so that the ending ends of each optical fiber form a light spot on the roof, thereby making the roof present a starry sky effect.

[0003] However, in order to avoid damage to the optical fibers, the above-mentioned interior layer cannot be retracted in general. For a roof provided with a sunroof, such an interior layer will hinder the use of the sunroof. SUMMARY

[0004] In view of the above technical problems, the first aspect of the present application provides an in-vehicle lighting device. The in-vehicle lighting device comprises a flexible light-emitting body, and the light-emitting body is adapted to be unfolded or retracted; the light-emitting body comprises a pattern film layer, and the pattern film layer has a light-emitting surface; after the pattern film layer is turned on, a pattern on the pattern film layer is displayed on the light-emitting body.

[0005] In an embodiment, the pattern film layer comprises a passive light-emitting layer and / or an active light-emitting layer; the passive light-emitting layer has a light-emitting surface and at least a part of the passive light-emitting layer is pre-provided with a first pattern; light in the passive light-emitting layer is adapted to be emitted from the light-emitting surface after passing through the first pattern and to be emitted from the light-emitting body to display the first pattern on the light-emitting body; the active light-emitting layer has a light-emitting surface and at least a part of the active light-emitting layer is provided with a plurality of independent light-emitting points; the plurality of light-emitting points are adapted to emit light under control, and the light emitted by the plurality of light-emitting points is adapted to be emitted from the light-emitting surface and to be emitted from the light-emitting body to display a second pattern composed of the plurality of light-emitting points on the light-emitting body.

[0006] In an embodiment, at least a part of the passive light-emitting layer and the active light-emitting layer are arranged in a stacked manner, so that the light-emitting body displays the first pattern and / or the second pattern.

[0007] In an embodiment, the passive light-emitting layer comprises at least one first light guide film, and the first light guide film has a light-emitting surface; a plurality of optical microstructures are configured in at least a part of the first light guide film, and the plurality of optical microstructures form the first pattern; light propagating in the first light guide film changes the propagation direction after passing through the plurality of optical microstructures and is emitted from the light-emitting surface to make the light-emitting body display the first pattern.

[0008] In an embodiment, the number of the first light guide films is a plurality, and the plurality of first light guide films are arranged in a stacked manner; the first patterns on the respective first light guide films are the same as or different from each other.

[0009] In one embodiment, the passive light emitting layer comprises: a second light guide film having an out-coupling surface; and a shielding layer having at least a portion of the area thereof configured as a light transmission region to form a first pattern; the shielding layer is disposed on the out-coupling surface of the second light guide film, and light propagating within the second light guide film is adapted to exit the out-coupling surface of the second light guide film and pass through the light transmission region to cause the light emitting body to display the first pattern.

[0010] In one embodiment, the shielding layer has a non-light transmission region deviating from the light transmission region, and the non-light transmission region is an opaque ink layer on the out-coupling surface of the second light guide film.

[0011] In one embodiment, the passive light emitting layer has at least one edge surface, at least a portion of the edge surface is used as an in-coupling surface of the passive light emitting layer; the in-cabpling surface is configured to correspond to a light source.

[0012] In one embodiment, the light source is disposed on the in-coupling surface to cause the light source to emit light into the passive light emitting layer.

[0013] In one embodiment, the active light emitting layer is a flexible display panel.

[0014] In one embodiment, the display panel comprises: a flexible substrate; a plurality of light emitting devices configured as a plurality of light emitting points; the plurality of light emitting devices are dispersedly disposed on the substrate; and a light transmission optical adhesive layer covering at least a portion of the plurality of light emitting devices.

[0015] In one embodiment, the pattern film layer further comprises a light conversion film covering the optical adhesive layer.

[0016] In one embodiment, the display panel further comprises a plurality of heat dissipation plates; the plurality of heat dissipation plates are dispersedly disposed on the substrate, and the plurality of light emitting devices are respectively in thermal conductive connection with corresponding heat dissipation plates.

[0017] In one embodiment, the light emitting body further comprises a translucent decorative layer; the decorative layer is disposed on the out-coupling surface of the pattern film layer to cause the light emitted from the out-coupling surface to pass through the decorative layer.

[0018] In one embodiment, a plurality of light transmission holes are disposed on the decorative layer.

[0019] In one embodiment, at least a portion of the plurality of light transmission holes are filled with a light transmission filler.

[0020] In one embodiment, the thickness of the pattern film layer is between 0.1 mm and 1 mm, and the thickness of the decorative layer is between 0.1 mm and 1 mm.

[0021] In one embodiment, the pattern film layer further comprises a back surface opposite to the light exit surface; and the light emitting body further comprises a sunshade layer arranged on the back surface of the pattern film layer.

[0022] In one embodiment, the thickness of the sunshade layer is between 0.1 mm and 2 mm.

[0023] A second aspect of the present application provides a vehicle. The vehicle comprises the in-vehicle light device according to the above.

[0024] The beneficial effects of the present application are as follows. The light emitting body of the in-vehicle light device of the present application is flexible and can be unfolded or rolled up. The in-vehicle light device can be installed on the roof of the vehicle. When the in-vehicle light device is used, the light emitting body is unfolded to cover the roof of the vehicle and the pattern film layer is lit. In this way, the light emitting body displays the pattern of the pattern film layer. After the light emitting body is rolled up, the sunroof on the roof of the vehicle is no longer covered by the light emitting body, and the occupant can use the sunroof as needed. Therefore, after the in-vehicle light device according to the present application is installed on the roof of the vehicle, it does not hinder the use of the sunroof. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described in the following detailed description with the aid of non-limiting examples of illustrative embodiments of the present application, with reference made to the accompanying drawings. The drawings are not drawn to scale.

[0026] Figure 1 A vehicle according to one embodiment of the present application is schematically shown.

[0027] Figure 2 An in-vehicle light device according to one embodiment of the present application is schematically shown.

[0028] Figure 3 A state in which the in-vehicle light device is installed on the roof of the vehicle is schematically shown, wherein the light emitting body is unfolded and the pattern is displayed on the light emitting body.

[0029] Figure 4 A state in which the in-vehicle light device is installed on the roof of the vehicle is schematically shown, wherein the light emitting body is rolled up.

[0030] Figure 5a 、 Figure 5b and Figure 5c The movement process of the light emitting body is schematically shown.

[0031] Figure 6 A first embodiment of the light emitting body is schematically shown.

[0032] Figure 7 The propagation of light in the first light guide film is schematically shown.

[0033] Figure 8 and Figure 9 schematically shows Figure 6 the pattern shown by the light emitting body.

[0034] Figure 10 schematically shows a second embodiment of the light emitting body.

[0035] Figure 11 and Figure 12 schematically shows Figure 10 the pattern shown by the light emitting body.

[0036] Figure 13 schematically shows a third embodiment of the light emitting body.

[0037] Figure 14 and Figure 15 schematically shows Figure 13 the pattern shown by the light emitting body.

[0038] Figure 16 schematically shows a fourth embodiment of the light emitting body.

[0039] Figure 17 and Figure 18 schematically shows Figure 16 the pattern shown by the light emitting body.

[0040] Figure 19 schematically shows a fifth embodiment of the light emitting body.

[0041] Figure 20 schematically shows a sixth embodiment of the light emitting body.

[0042] List of reference signs

[0043] 1 vehicle

[0044] 11 vehicle roof 12 sunroof

[0045] 2 interior light device

[0046] 3 light emitting body

[0047] 301 fixed end 302 moving end

[0048] 303 pattern film layer

[0049] 31 first light guide film

[0050] 311 first pattern 312 optical microstructure

[0051] 313 light exit face 314 edge face

[0052] 315 back face 316 light

[0053] 317 modification layer 318 sunshade layer

[0054] 319 light source 310 adhesive

[0055] 32 second light guide film

[0056] 321 shielding layer 322 light-transmissive region

[0057] 323 non-light-transmissive region

[0058] 33 display panel

[0059] 331 control device 332 second pattern

[0060] 333 light emitting point 334 light conversion film

[0061] 351 light-transmissive hole

[0062] 4 drive device

[0063] 41 reel 42 motor

[0064] 43 pull cord 44 pulley

[0065] 5 frame

[0066] L movement direction of the light emitting body DETAILED DESCRIPTION

[0067] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in connection with the specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0068] Figure 1 A vehicle 1 according to an embodiment of the present application is schematically shown. As shown in the drawings, the vehicle 1 comprises a vehicle roof 11, on which a sunroof 12 is arranged. An in-vehicle light device 2 is mounted on an inner surface of the vehicle roof 11 facing a passenger compartment (not shown in the drawings). Figure 1

[0069] As shown in the drawings, Figure 2 , Figure 3 and Figure 4 , the in-vehicle light device 2 comprises a flexible light emitting body 3, a drive device 4, and a frame 5 carrying the light emitting body 3 and the drive device 4.

[0070] ​The frame 5 can be mounted to the inner surface of the vehicle roof 11, thereby mounting the in-vehicle light device 2 to the vehicle roof 11. The frame 5 is well known to those skilled in the art and will not be described here.

[0071] The driving device 4 is used to drive the light-emitting body 3 to unroll to cover the vehicle roof 11, or to roll up the light-emitting body 3 to expose the vehicle roof 11. The light-emitting body 3 comprises a pattern film layer 303 having a light-emitting surface 313. After the light-emitting body 3 is unrolled and covers the vehicle roof 11, the light-emitting surface 313 faces the passenger compartment. After the pattern film layer 303 is lighted, the light 316 propagating in the pattern film layer 303 will be emitted from the light-emitting body 3 and enter the passenger compartment. In this way, the passengers in the passenger compartment will see the light-emitting body 3 (or the vehicle roof 11) displaying the pattern on the pattern film layer 303. For example, the pattern film layer 303 has a starry sky pattern, so that the vehicle roof 11 displays a starry sky pattern (as shown in Figure 3 Of course, the pattern film layer 303 can also have any other pattern to make the vehicle roof 11 present other patterns, which are not limited here. After the flexible light-emitting body 3 is rolled up, the vehicle roof 11 is exposed, the sunroof 12 is no longer covered by the light-emitting body 3 (as shown in Figure 4 Therefore, after the in-vehicle light device 2 according to the present application is mounted to the vehicle roof 11, it will not hinder the use of the sunroof 12 of the vehicle 1.

[0072] As shown in Figure 2 , Figure 5a to Figure 5c , the driving device 4 comprises a reel 41, a motor 42, a pull rope 43 and a pulley 44. The light-emitting body 3 can be rolled up on the reel 41, or released from the reel 41 to unroll. Specifically, the light-emitting body 3 has a fixed end 301 and a moving end 302 opposite to the fixed end 301, and the fixed end 301 is connected with the reel 41. The motor 42 is connected with the reel 41 to drive the reel 41 to rotate, and the pulley 44 is spaced apart from the reel 41 along the moving direction L of the light-emitting body 3. The pull rope 43 is wound around the pulley 44 and one end of the pull rope 43 is connected with a reeler (not shown in the figure) on the reel 41, and the other end of the pull rope 43 is connected with the moving end 302 of the light-emitting body 3. In this way, in the initial state of the in-vehicle light device 2, as shown in Figure 5a , the light-emitting body 3 is rolled up on the reel 41. When the motor 42 rotates in a first direction (for example, counterclockwise), as shown in Figure 5b , the pull rope 43 is gradually reeled on the reeler, and the light-emitting body 3 is gradually released from the reel 41 to unroll under the pulling of the pull rope 43. Finally, as shown in Figure 5cAs shown, the light-emitting body 3 is fully unfolded. It should be understood that when the motor 42 rotates in the second direction (e.g. clockwise direction), the pull cord 43 is gradually released from the winder, and the light-emitting body 3 is gradually wound onto the reel 41. Such a driving device 4 is well known to those skilled in the art, and will not be described in detail here. It should be understood that other types of driving devices can also be used to drive the light-emitting body 3 to unfold or wind up, according to actual conditions.

[0073] First embodiment of a light-emitting body.

[0074] As shown in Figure 6 , the pattern film layer 303 comprises a transparent first light guide film 31. The first light guide film 31 has an out-coupling surface 313, a back surface 315 opposite to the out-coupling surface 313, and an edge surface 314 connecting the back surface 315 and the out-coupling surface 313. The first light guide film 31 serves as a passive light-emitting layer, and the edge surface 314 of the first light guide film 31 serves as an in-coupling surface.

[0075] As shown in Figure 6 , the interior light device 2 comprises a light source 319, which is located at the side of the first light guide film 31 and corresponds to the in-coupling surface. When the interior light device 2 is used, the light-emitting body 3 is unfolded, and the light source 319 is powered on. The light emitted by the light source 319 will irradiate into the first light guide film 31, thereby illuminating the first light guide film 31. At least part of the area in the first light guide film 31 is configured with a plurality of optical microstructures 312 Figure 7 , one of which is schematically shown. The plurality of optical microstructures 312 form a first pattern 311 (e.g. a starry sky pattern). The light 316 propagating in the first light guide film 31 will change its propagation direction and be emitted out of the out-coupling surface 313 after passing through the plurality of optical microstructures 312; while the light rays that do not pass through the optical microstructures 312 will still propagate in the first light guide film 31 without being emitted out of the out-coupling surface 313. In this way, the light-emitting body 3 displays the first pattern 311, and the remaining area of the light-emitting body 3 except the first pattern 311 has almost no light emission and is low in brightness, which makes the first pattern 311 display clearly and sharply (as shown in Figure 8 and Figure 9 , where Figure 8 is a black-and-white image of the pattern displayed by the light-emitting body 3, Figure 9 is a color image of the pattern displayed by the light-emitting body 3).

[0076] In addition, the light source 319 is arranged at the side of the first light guide film 31, which helps to reduce the thickness of the light-emitting body 3 (or the interior light device 2), so as to avoid the height of the vehicle roof 11 from being reduced too much, thereby improving the riding experience of the passengers.

[0077] It should be noted that the first light guide film 31 is well known to those skilled in the art. The optical microstructure 312 refers to a structure that affects light transmission performance at the scale of light wavelength or sub-light wavelength. In one embodiment, the optical microstructure 312 can be formed within the first light guide film 31 and near the back surface 315 in various ways, such as through nanoimprinting or micro-nanoimprinting, or through screen printing, etching, engraving, etc. In other embodiments, the optical microstructure 312 can also be formed at other locations within the first light guide film 31, such as near the light emitting surface 313. When using the first light guide film 31, light propagates within the first light guide film 31 by total internal reflection before encountering the optical microstructure 312; after encountering the optical microstructure 312, total internal reflection is disrupted, and the light is emitted from the light emitting surface 313. These are all well known to those skilled in the art and will not be elaborated further here.

[0078] For example Figure 2 As shown, the light source 319 is attached to the light-incident surface. This ensures that most or all of the light emitted by the light source 319 illuminates the first light guide film 31, avoiding or minimizing light leakage in the vehicle interior lighting device 2. Furthermore, after the light source 319 is attached to the first light guide film 31, the two form a single unit. Even with repeated winding and unwinding of the light-emitting body 3, the light source 319 and the light-incident surface of the first light guide film 31 remain aligned, maximizing the amount of light emitted by the light source 319 illuminating the first light guide film 31. In one embodiment, the light source 319 is an LED strip, facilitating its attachment to the light-incident surface. Of course, other types of light-emitting components can also be used as the light source, which will not be elaborated upon here.

[0079] In one embodiment, the light-incident surface is not rolled up when the light-emitting body 3 is wound up. This prevents the light source 319, located at the light-incident surface, from being wound up, thus avoiding damage to the light source 319. For example, the first light guide film 31 or the light-emitting body 3 is generally rectangular. The two short sides of the rectangle correspond to the moving end 302 and the fixed end 301 of the light-emitting body 3, respectively. The light-incident surface of the first light guide film 31 is located at the short side of the rectangle (i.e., the light source 319 is located at the short side of the rectangle), and the light-emitting body 3 is generally wound up or unwound along the long side of the rectangle. Overall, the light-incident surface of the first light guide film 31 is generally perpendicular to the direction of movement L of the light-emitting body 3. Thus, when the light-emitting body 3 is wound up, the light-incident surface (and the light source 319 located at the light-incident surface) is not wound up. Of course, if necessary, the light source 319 can also be located at other edge surfaces of the first light guide film 31, which will not be elaborated here.

[0080] In one embodiment, there are multiple first light guide films 31, and these multiple first light guide films 31 are stacked. The first patterns on each first light guide film may be the same or different from each other. In this case, each layer of the first light guide film is equipped with an independent light source, and the light source of each layer of the first light guide film can be controlled independently. In this way, any layer of the first light guide film can be lit up as needed, so that the light-emitting body 3 displays the first pattern of that layer of the first light guide film. It is also possible to light up any two or more layers of the first light guide films simultaneously as needed, so that the light-emitting body 3 can display the first patterns of these first light guide films in superimposed form. It is also possible to control the light sources of two or more layers of the first light guide films to be lit up or turned off according to an appropriate timing sequence, so that the corresponding first light guide films are lit up or turned off according to the timing sequence, thus enabling the light-emitting body 3 to display dynamic patterns. The control method of the light source is easily implemented by those skilled in the art and will not be described in detail here.

[0081] In one embodiment, these first light guide films are bonded together with a transparent adhesive. This prevents relative movement between the first light guide films, avoiding accidental misalignment and thus preventing pattern distortion displayed by the light-emitting body 3. Furthermore, bonding these first light guide films into a single unit also prevents mutual wear or rattling of the light-emitting body 3. In one embodiment, the adhesive can be any of the following: optical adhesive (i.e., OCA adhesive), hot melt adhesive, water-based adhesive, polymer adhesive, solvent-based adhesive, or UV adhesive, all of which are well known to those skilled in the art and will not be described in detail here. Of course, those skilled in the art can also use other methods to tightly bond these first light guide films together, such as laser welding, depending on the actual situation; this is not a limitation.

[0082] For example Figure 6 As shown, the light-emitting body 3 also includes a semi-transparent decorative layer 317, which covers the light-emitting surface 313 of the first light guide film 31. When the first light guide film 31 is lit, the light emitted from the light-emitting surface 313 passes through the decorative layer 317. Due to the blocking effect of the semi-transparent decorative layer 317, the brightness of the remaining areas of the light-emitting body 3 that deviate from the first pattern 311 is lower, making the first pattern 311 more prominent and thus improving the overall display effect of the light-emitting body 3. Furthermore, the light emitted from the light-emitting surface 313 of the first light guide film 31 is blocked by the semi-transparent decorative layer 317, making the first pattern 311 softer. When the first light guide film 31 is not lit, the decorative layer 317 can conceal the internal structure of the light-emitting body 3 to prevent occupants from seeing it, thereby improving the aesthetics of the vehicle roof 11.

[0083] In one embodiment, the light transmittance of the finishing layer 317 can be between 5% and 40%. The finishing layer 317 can be made of, for example, a light-transmissive leather (e.g., the light-transmissive leather is suede, genuine leather, etc.) so that the finishing layer 317 has a soft touch. A light-transmissive composite fabric, a back bubble, etc. can also be provided on the back surface (i.e., the surface facing the first light guide film 31) of the light-transmissive leather to further improve the soft touch of the finishing layer 317. (The back bubble is well known to those skilled in the art and will not be described here.) The finishing layer 317 can also be made of, for example, a light-transmissive film sheet with or without patterns (e.g., a micro-nano optical film sheet). Those skilled in the art can also select other appropriate light-transmissive materials to manufacture the finishing layer according to actual conditions, which are not limited here. Of course, materials with light transmittance in other numerical ranges can also be selected to manufacture the finishing layer according to actual conditions, which are not limited here.

[0084] As shown in FIG. 1, the light-emitting body 3 also includes a finishing layer 317 provided on the front surface 314 of the first light guide film 31. The finishing layer 317 is made of a material with light transmittance, such as a light-transmissive fabric, a light-transmissive film sheet, etc. The finishing layer 317 can also be made of a material with light transmittance and a soft touch, such as a light-transmissive leather (e.g., the light-transmissive leather is suede, genuine leather, etc.), a light-transmissive composite fabric, etc. The finishing layer 317 can also be made of a material with light transmittance and a soft touch, such as a light-transmissive film sheet with or without patterns (e.g., a micro-nano optical film sheet). Those skilled in the art can also select other appropriate light-transmissive materials to manufacture the finishing layer according to actual conditions, which are not limited here. Of course, materials with light transmittance in other numerical ranges can also be selected to manufacture the finishing layer according to actual conditions, which are not limited here. Figure 6 As shown in FIG. 1, the light-emitting body 3 also includes a finishing layer 317 provided on the front surface 314 of the first light guide film 31. The finishing layer 317 is made of a material with light transmittance, such as a light-transmissive fabric, a light-transmissive film sheet, etc. The finishing layer 317 can also be made of a material with light transmittance and a soft touch, such as a light-transmissive leather (e.g., the light-transmissive leather is suede, genuine leather, etc.), a light-transmissive composite fabric, etc. The finishing layer 317 can also be made of a material with light transmittance and a soft touch, such as a light-transmissive film sheet with or without patterns (e.g., a micro-nano optical film sheet). Those skilled in the art can also select other appropriate light-transmissive materials to manufacture the finishing layer according to actual conditions, which are not limited here. Of course, materials with light transmittance in other numerical ranges can also be selected to manufacture the finishing layer according to actual conditions, which are not limited here.

[0085] In one embodiment, the sunshade layer 318 can be a sunshade film or a sunshade fabric provided on the back surface 315 of the first light guide film 31, and can also be a sunshade coating provided on the back surface 315 of the first light guide film 31. For example, the material of the sunshade coating can include silicone paint, polyurethane paint, polyurethane paint, epoxy paint, etc. The sunshade film, the sunshade fabric, and the sunshade coating are well known to those skilled in the art and will not be described here.

[0086] The thickness of the first light guide film 31 is between 0.1 mm and 1 mm, preferably between 0.25 mm and 0.6 mm; the thickness of the finishing layer 317 is between 0.1 mm and 1 mm, preferably between 0.2 mm and 0.5 mm; and the thickness of the sunshade layer 318 is between 0.1 mm and 2 mm, preferably between 0.3 mm and 1 mm. This helps to reduce the thickness of the light-emitting body 3, for example, the thickness of the light-emitting body 3 can be controlled to be less than 3 mm.

[0087] In one embodiment, the first light guide film 31 is also bonded to the decorative layer 317 and the sunshade layer 318 by a transparent adhesive 310. The adhesive 310 can be any one of optical adhesive (i.e. OCA glue), hot melt glue, water-based glue, polymer glue, solvent-based glue, UV glue.

[0088] Second embodiment of the light emitting body.

[0089] Figure 10 The second embodiment of the light emitting body is schematically shown. The structure of the light emitting body of the second embodiment is similar to that of the first embodiment. For example, the light emitting body of the second embodiment also comprises the pattern film layer 303, the decorative layer 317 and the sunshade layer 318. For simplicity, only the differences between the two are described below.

[0090] As Figure 10 shown, in the light emitting body of the second embodiment, the pattern film layer 303 comprises a transparent second light guide film 32 and a blocking layer 321. The second light guide film 32 serves as a passive light emitting layer and has an emitting surface 313. At least part of the blocking layer 321 is provided as a light transmission region 322, and the rest is a non-light transmission region 323. The light transmission region 322 is used to form the first pattern 311, and the light transmission region 322 has a light transmission rate of between 5% and 40%. The blocking layer 321 is arranged on the emitting surface 313 of the second light guide film 32. When the in-car light device 2 is in use, after the second light guide film 32 is lit, the light 316 propagating in the second light guide film 32 can be emitted from the emitting surface 313. Under the blocking effect of the blocking layer 321, only the light transmission region 322 allows light to pass through, and the non-light transmission region 323 of the blocking layer 321 does not allow light to pass through. Thus, the first pattern 311 is displayed on the light emitting body 3, and the rest of the light emitting body 3 has almost no emitted light and is low in brightness except for the first pattern 311, which makes the first pattern 311 display clearly and sharply (as Figure 11 and Figure 12 shown, where Figure 11 is the black-and-white pattern of the pattern displayed by the light emitting body 3, Figure 12 is the color pattern of the pattern displayed by the light emitting body 3.

[0091] The second light guide film 32 is doped with a plurality of scattering particles. When the second light guide film 32 is in use, light propagates in the second light guide film 32 in a total reflection manner when it does not encounter scattering particles; when it encounters these scattering particles, the propagation path changes, and total reflection is destroyed, so that the light is emitted from the emitting surface 313 of the second light guide film 32. Such a second light guide film 32 is well known to those skilled in the art and will not be described here. It should be understood that other types of light guide films can also be used, which can be determined according to actual conditions.

[0092] In one embodiment, the non-light-transmissive region 323 of the shielding layer 321 is an opaque ink layer on the light-exit surface 313 of the second light guide film 32. In this way, the shielding layer 321 can be formed on the light-exit surface 313 of the second light guide film 32 by silk-screen printing or the like. This helps to reduce the manufacturing cost of the light emitting body 3. It should be understood that the shielding layer 321 can also be formed on the decorative layer 317. In one embodiment, the ink is a non-light-transmissive ink, such as brown ink or the like. In other embodiments, an ink having an anti-ultraviolet effect can also be used. Such inks are well known to those skilled in the art and will not be described here.

[0093] In other embodiments, the shielding layer 321 can also be configured as a separate non-light-transmissive film. The film has the light-transmissive region 322 and the non-light-transmissive region 323 offset from the light-transmissive region 322. Such a shielding layer 321 is bonded to the second light guide film 32 and / or the decorative layer 317.

[0094] A third embodiment of the light emitting body.

[0095] Figure 13 A third embodiment of the light emitting body is schematically shown. The structure of the light emitting body of the third embodiment is similar to that of the first embodiment. For example, the light emitting body of the third embodiment also includes the pattern film layer 303, the decorative layer 317 and the sunshade layer 318. For simplicity, only the differences between the two will be described below.

[0096] As Figure 13 shown, in the light emitting body of the third embodiment, the pattern film layer 303 includes a flexible display panel 33. In this way, the display panel 33 serves as an active light emitting layer and has the light-exit surface 313. In addition, the interior light device 2 also includes a control device 331 for providing a driving signal to the display panel 33. When the interior light device 2 is in use, the control device 331 provides a driving signal to the display panel 33 to light up the display panel 33 and make the display panel 33 display a second pattern 332. In this way, the light emitting body 3 also displays the second pattern 332 (as Figure 14 and Figure 15 shown, where Figure 14 is a black-and-white image of the pattern displayed by the light emitting body 3, Figure 15 is a color image of the pattern displayed by the light emitting body 3.

[0097] By causing the control device 331 to provide different driving signals to the display panel 33, the display panel 33 can display different second patterns. For example, the second pattern 332 can be a dynamic pattern (such as a shooting star), a static pattern (such as a static starry sky or text), or a combination of a dynamic pattern and a static pattern (such as a shooting star and a static starry sky).

[0098] In one embodiment, the display panel 33 can be a flexible OLED panel, a flexible mini LED panel, a flexible micro LED panel, etc. Of course, the display panel 33 can also be other types of panels, which are not described here again.

[0099] For an OLED panel, a plurality of OLED pixels (i.e., light emitting devices) are formed on a flexible substrate. Each of the OLED pixels in the OLED panel is an independent light emitting point 333. Each of the independent light emitting points 333 can be controlled to emit light independently by a driving signal provided by the control device 331. The plurality of light emitting points 333 emit light simultaneously to form the second pattern 332.

[0100] For a mini LED panel or a flexible micro LED panel, a plurality of LED chips (i.e., light emitting devices) are directly disposed on a flexible substrate (not shown in the figure). Each of the LED chips is an independent light emitting point 333. Each of the LED chips can be controlled to emit light independently by a driving signal provided by the control device 331. The plurality of LED chips emit light simultaneously or respectively to form the second pattern 332. The LED chips can also emit light alternately, so that the second pattern 332 forms a dynamic pattern.

[0101] The flexible mini LED panel is similar to the flexible micro LED panel as a whole, and for the sake of simplicity, only the flexible mini LED panel is described below. The flexible substrate is pre-formed with a circuit for powering the LED. The LED chip can be directly disposed on the substrate by a chip direct bonding (i.e., COB (chip on board)) process, which helps to reduce the volume of the display panel (or light emitting body) and avoids the problem of shadow and / or dark corner generated by the traditional LED lamp bead. For the COB process, a suitable amount of adhesive (for example, the adhesive can be a thermally conductive epoxy resin glue. The thermally conductive epoxy resin glue can be, for example, silver particle doped epoxy resin glue) is first applied at a predetermined position on the substrate. Then, the bare LED chip is directly disposed on the adhesive, so as to bond the bare LED chip to the substrate. Next, the substrate with the bare LED chip is subjected to heat treatment to firmly fix the bare LED chip on the substrate. Next, a bonding wire (for example, an aluminum wire bonding wire) is used to weld the bare LED chip and the corresponding pad of the circuit on the substrate, thereby establishing a direct electrical connection between the LED chip and the substrate. Then, a light-transmitting encapsulation glue (i.e., an optical glue layer, not shown in the figure) is applied on the bare LED chip to encapsulate the LED chip, so as to protect the LED chip from the external environment.

[0102] The flexible substrate enables the display panel to adapt to the expansion and retraction of the light emitting body. In one embodiment, the flexible substrate can be made of any one of the following materials: polyvinyl alcohol (PVA), polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate glycol (PEN), polydimethylsiloxane (PDMS). In one embodiment, the thickness of the substrate can be between 0.05mm and 0.5mm, preferably between 0.1mm and 0.2mm. In this way, the substrate can be smoothly retracted and expanded.

[0103] A plurality of heat sinks (not shown in the figure) can also be dispersed on the substrate. Each of the LED chips is in thermal connection with a corresponding heat sink. When the LED chips are working, the heat sinks are used to dissipate heat from the LED chips, reduce the working temperature of the LED chips, and improve the service life of the LED chips. In one embodiment, the heat sinks can be metal ceramic plates, aluminum nitride ceramic plates, silicon carbide ceramic plates, graphene heat sinks, etc. These heat sinks not only have good heat dissipation performance, but also have good high temperature resistance.

[0104] It should be understood that the light extraction efficiency of the LED chips and the light emission uniformity can be improved by selecting appropriate packaging glue and packaging shapes. In one embodiment, the packaging glue can be epoxy resin or silicone glue.

[0105] In some embodiments, the LED chips are blue light LED chips. A plurality of phosphor powders are also mixed in the packaging glue, which can emit light of different colors under the excitation of the light emitted by the blue light LED chips. In this way, the driving signal provided by the control device can be used to drive the appropriate blue light LED chips to emit light, so that the light emitting body displays a colorful second pattern. In other embodiments, red light phosphor powder and green light phosphor powder can also be appropriately combined with blue light LED to make the display panel emit white light. In this case, the light emitting body can display a black and white second pattern and / or a gray scale second pattern. Of course, the light emitting body can also emit only white light or no light.

[0106] In other embodiments, the LED chips include red light LED chips, green light LED chips, and blue light LED chips dispersed on the substrate according to predetermined requirements. In this way, the light emitting body can display a colorful second pattern, a black and white second pattern, and / or a gray scale second pattern. Of course, the light emitting body can also emit only white light or no light. In this case, the packaging glue does not need to mix phosphor powder.

[0107] A fourth embodiment of the light emitting body.

[0108] Figure 16A fourth embodiment of the light-emitting body is schematically shown. The structure of the light-emitting body in the fourth embodiment is similar to that in the first embodiment. For example, the light-emitting body in the fourth embodiment also includes a patterned film layer 303, a modification layer 317, and a sunshade layer 318. For simplicity, only the differences between the two will be described below.

[0109] like Figure 16 As shown, in the light-emitting body of the fourth embodiment, the pattern film layer 303 includes an active light-emitting layer and a passive light-emitting layer that are at least partially stacked. For example, the area of ​​the active light-emitting layer with light-emitting dots 333 is stacked with the area of ​​the passive light-emitting layer with the first pattern. For example, the active light-emitting layer is a display panel 33, and the passive light-emitting layer is a first light guide film 31. For example, the first light guide film 31 is located between the display panel 33 and the decorative layer 317. Thus, the vehicle interior lighting device 2 includes not only a light source 319 for the first light guide film 31, but also a control device 331 for the display panel 33. When using the vehicle interior lighting device 2, only the first light guide film 31 can be lit to make the light-emitting body 3 display the first pattern 311; only the display panel 33 can be lit to make the light-emitting body 3 display the second pattern 332; or both the first light guide film 31 and the display panel 33 can be lit simultaneously to make the light-emitting body 3 display the first pattern 311 and the second pattern 332 superimposed, for example, the first pattern 311 is a static starry sky, and the second pattern 332 is a dynamic shooting star. (e.g.) Figure 17 and Figure 18 As shown, where Figure 17 It is a black and white image of the pattern displayed by the luminous body 3. Figure 18 (It is a color image of the pattern displayed by the luminous body 3).

[0110] It should be understood that in the light-emitting body of the fourth embodiment, the second light guide film 32 and the display panel 33 may also be stacked together to form a patterned film layer 303. In other embodiments, the first light guide film 31, the second light guide film 32 and the display panel 33 may also be stacked together to form a patterned film layer 303.

[0111] The fifth embodiment of the light-emitting body.

[0112] Figure 19 A fifth embodiment of the light-emitting body is schematically shown. The structure of the light-emitting body in the fifth embodiment is similar to that in the first embodiment. For example, the light-emitting body in the fifth embodiment also includes a patterned film layer 303, a modification layer 317, and a sunshade layer 318. For simplicity, only the differences between the two will be described below.

[0113] like Figure 19As shown, in the light emitting body of the fifth embodiment, the decorative layer 317 is provided with a plurality of light transmitting holes 351. When the light pattern film layer 303 is lighted up, the light transmitting holes 351 on the decorative layer 317 allow light to directly emit out, while the areas of the decorative layer 317 without the light transmitting holes 351 block light to a certain extent. In this way, the pattern displayed on the light emitting body 3 has a light and shade level, which improves the display effect of the pattern on the light emitting body 3. In an embodiment, the size of the light transmitting holes 351 is between 0.2 mm and 1 mm. Of course, the light transmitting holes 351 can also be provided with other sizes according to actual conditions, which are not limited here.

[0114] In an embodiment, the light transmitting holes can be realized by laser drilling, mechanical punching and the like on the decorative layer, which will not be described here.

[0115] According to actual conditions, the light transmitting holes 351 can be filled with light transmitting fillers. When light transmits through the fillers, it is gathered and / or scattered in the fillers, so that the pattern displayed on the light emitting body 3 is flickering, which further improves the display effect of the pattern on the light emitting body 3. In an embodiment, the fillers can be at least one of hot melt glue, silicone glue, polyurethane glue, epoxy resin glue, UV glue and TPU glue.

[0116] The fillers can be filled into the light transmitting holes by means of dispensing process, blade coating process or film laminating process and the like. For example, for the dispensing process, a dispenser can be used to fill the fillers into the light transmitting holes. For the blade coating process, the fillers are coated on the surface of the decorative layer so that the fillers enter into the light transmitting holes. For the film laminating process, the film is heated and rolled on the decorative layer so that the film is melted into a flowing glue liquid. Under the extrusion of the roller, the glue liquid is filled into the light transmitting holes of the decorative layer. Meanwhile, the film laminating process forms a film layer in the light emitting body, i.e. a film layer is formed between the pattern film layer 303 and the decorative layer 317 (not shown in the figure), and the thickness of the film layer is generally between 0.05 mm and 1 mm, preferably between 0.05 mm and 0.5 mm. The specific operation modes of the above-mentioned dispensing process, blade coating process and film laminating process can be easily determined by those skilled in the art according to actual conditions, which will not be described here.

[0117] In an embodiment, a light transmitting fabric can be used as the decorative layer 317. The through holes of the light transmitting fabric itself can be used as the light transmitting holes, so that it is not necessary to additionally construct the light transmitting holes on the light transmitting fabric, thereby simplifying the manufacturing of the light emitting body 3. Moreover, the light transmitting fabric also makes the decorative layer 317 have a soft touch.

[0118] It should also be understood that, in the present embodiment, the pattern film layer can include not only the passive light-emitting layer, but also the active light-emitting layer, and can also include a combination of the passive light-emitting layer and the active light-emitting layer. For the active light-emitting layer, each light-emitting device (such as the LED chip or OLED pixel described above) is substantially aligned with a light-transmitting hole. In this way, the light emitted by the LED chip is emitted through the light-transmitting hole. In the case where the light-transmitting hole is filled with a light-transmitting filler, the light is transmitted through the filler, and aggregation and / or scattering are generated in the filler, so that the pattern displayed on the light-emitting body 3 is flickered, which further improves the display effect of the pattern on the light-emitting body 3.

[0119] Sixth embodiment of the light-emitting body.

[0120] Figure 20 The sixth embodiment of the light-emitting body is schematically shown. The structure of the light-emitting body of the sixth embodiment is similar to that of the third embodiment. The main difference between the two is that the pattern film layer 303 of the light-emitting body of the sixth embodiment further includes a light conversion film 334. Specifically, the light conversion film 334 covers the optical adhesive layer of the display panel 33.

[0121] Taking a flexible mini LED panel as an example, the LED chip used is a blue LED chip, and no fluorescent powder is mixed in the encapsulating adhesive. The light conversion film 334 is a fluorescent film (i.e., a plurality of fluorescent powders are applied inside the film). These fluorescent powders can emit light of different colors under the excitation of the light emitted by the blue LED chip. In this way, the appropriate blue LED chip can be driven to emit light by the driving signal provided by the control device, so that the light-emitting body displays a colorful second pattern. In other embodiments, red fluorescent powder and green fluorescent powder can be appropriately combined with blue LED to make the light-emitting body emit white light. In this case, the light-emitting body can display a black-and-white second pattern and / or a gray-scale second pattern. Of course, the light-emitting body can also emit only white light or no light.

[0122] In other embodiments, the light conversion film 334 is a quantum dot film (i.e., a plurality of quantum dot materials are applied inside the film). Similar to the fluorescent film, these quantum dot materials can emit light of different colors under the excitation of the light emitted by the blue LED chip. In this way, the appropriate blue LED chip can be driven to emit light by the driving signal provided by the control device, so that the light-emitting body displays a colorful second pattern. In other embodiments, red quantum dots and green quantum dots can be appropriately combined with blue LED to make the light-emitting body emit white light. In this case, the light-emitting body can display a black-and-white second pattern and / or a gray-scale second pattern. Of course, the light-emitting body can also emit only white light or no light.

[0123] For the flexible micro LED panel, the case is basically the same as the flexible mini LED panel, which is not repeated here.

[0124] It is noted that the utility model (e.g., utility model concepts, etc.) has been described in the specification of the present patent document and / or illustrated in the drawings according to exemplary embodiments; the embodiments of the utility model are only proposed in an exemplary manner, and are not intended to limit the scope of the utility model. The structure and / or arrangement of the elements of the utility model concept embodied in the utility model as described in the specification and / or illustrated in the drawings are only illustrative. Although the exemplary embodiments of the utility model have been described in detail in the present patent document, it is easy for those skilled in the art to understand that equivalents, modifications, variations, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the utility model; all these subject matters (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included in the scope of the utility model. It should also be noted that various / other modifications, variations, alternatives, equivalents, changes, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, order of process / method steps, operations, operating conditions, performances, materials, compositions, combinations, etc.) without deviating from the scope of the utility model; all these subject matters (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included in the scope of the utility model. The scope of the utility model is not intended to be limited to the subject matters (e.g., details, structures, functions, materials, behaviors, steps, order, systems, results, etc.) described in the specification and / or drawings of the present patent document. It is considered that the claims of the present patent document will be properly interpreted to cover the full scope of the utility model subject matter (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in the present patent document are intended to provide a description of the subject matter of the exemplary embodiments, rather than as a limitation on the scope of the utility model.

[0125] It is also noted that, according to exemplary embodiments, the utility model can include conventional technologies (e.g., technologies implemented and / or integrated in exemplary embodiments, modifications, variations, combinations, equivalents), or can include any other applicable technologies (now and / or future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the drawings. All these technologies (e.g., technologies implemented in the form of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the utility model of the present patent document.

Claims

1. An in-vehicle light device characterized by comprising: The in-vehicle light device comprises a flexible light-emitting body, and the light-emitting body is adapted to be unfolded or rolled up; the light-emitting body comprises a pattern film layer having a light-emitting surface; the pattern film layer displays a pattern on the light-emitting body after being lighted.

2. The in-vehicle light device according to claim 1, characterized by The pattern film layer comprises a passive light-emitting layer and / or an active light-emitting layer; The passive light-emitting layer has the light-emitting surface and at least a part of the passive light-emitting layer is provided with a first pattern; light in the passive light-emitting layer is adapted to be emitted from the light-emitting surface and leave the light-emitting body after passing through the first pattern so that the light-emitting body displays the first pattern; The active light-emitting layer has the light-emitting surface and at least a part of the active light-emitting layer is provided with a plurality of independent light-emitting points; the plurality of light-emitting points are adapted to be controlled to emit light, and the light emitted by the plurality of light-emitting points is adapted to be emitted from the light-emitting surface and leave the light-emitting body so that the light-emitting body displays a second pattern composed of the plurality of light-emitting points.

3. The in-vehicle light device according to claim 2, characterized by At least a part of the passive light-emitting layer and the active light-emitting layer are laminated to make the light-emitting body display the first pattern and / or the second pattern.

4. The in-vehicle light device according to claim 2, characterized by The passive light-emitting layer comprises at least one first light guide film having the light-emitting surface; a plurality of optical microstructures are configured in at least a part of the first light guide film, and the plurality of optical microstructures form the first pattern; Light propagating in the first light guide film changes the propagation direction after passing through the plurality of optical microstructures and is emitted through the light-emitting surface so that the light-emitting body displays the first pattern.

5. The in-vehicle light device according to claim 4, characterized by The number of the first light guide films is a plurality, and the plurality of first light guide films are laminated; the first patterns on each of the first light guide films are the same as or different from each other.

6. The in-vehicle light device according to claim 2, characterized by The passive light-emitting layer comprises: a second light guide film having the light-emitting surface; and an opaque shielding layer, at least a part of the shielding layer is provided as a light-transmitting region to form the first pattern; the shielding layer is covered on the light-emitting surface of the second light guide film, and light propagating in the second light guide film is adapted to be emitted from the light-emitting surface of the second light guide film and pass through the light-transmitting region so that the light-emitting body displays the first pattern.

7. The in-vehicle light device according to claim 6, characterized by The shielding layer has a non-light-transmitting region deviating from the light-transmitting region, and the non-light-transmitting region is an opaque ink layer on the light-emitting surface of the second light guide film.

8. The in-vehicle light device according to claim 2, characterized by The passive light-emitting layer has at least one edge surface, at least a part of the edge surface is used as a light-incident surface of the passive light-emitting layer; The in-vehicle light device further comprises a light source corresponding to the light-incident surface.

9. The in-vehicle light device according to claim 8, characterized by The light source is attached to the light-incident surface so that light emitted by the light source enters the passive light-emitting layer.

10. The in-vehicle light device according to claim 2, characterized by The active light-emitting layer is a flexible display panel.

11. The in-vehicle light device according to claim 10, characterized by The display panel comprises: a flexible substrate; a plurality of light-emitting devices used as the plurality of light-emitting points; the plurality of light-emitting devices are dispersedly arranged on the substrate; a light-transmitting optical adhesive layer covering at least a part of the plurality of light-emitting devices.

12. The in-vehicle light device according to claim 11, characterized by The pattern film layer further comprises a light conversion film, which is covered on the optical adhesive layer.

13. The in-vehicle light device according to claim 11 or 12, characterized by The display panel further comprises a plurality of heat dissipation plates; the plurality of heat dissipation plates are distributed on the substrate, and the plurality of light emitting devices are respectively in thermal conductive connection with corresponding heat dissipation plates.

14. The in-vehicle lighting device according to claim 1, characterized by The light emitting body further comprises a translucent decoration layer; the decoration layer is covered on the light emitting surface of the pattern film layer, so that the light emitted from the light emitting surface passes through the decoration layer.

15. The in-vehicle light device according to claim 14, characterized by A plurality of light transmission holes are arranged on the decoration layer.

16. The in-vehicle light device according to claim 15, characterized by At least part of the plurality of light transmission holes is filled with a light transmission filler.

17. The in-vehicle light device of claim 14, wherein The thickness of the pattern film layer is between 0.1mm and 1mm, and the thickness of the decoration layer is between 0.1mm and 1mm.

18. The in-vehicle lighting device according to claim 1, characterized by The pattern film layer further comprises a back surface opposite to the light emitting surface. The light emitting body further comprises a sunshade layer covered on the back surface of the pattern film layer.

19. The in-vehicle lighting device of claim 18, wherein, The thickness of the sunshade layer is between 0.1mm and 2mm.

20. A vehicle characterized by comprising: The vehicle comprises the in-vehicle light device according to any one of claims 1 to 19.

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