Illumination structure of vehicle interior material and method for manufacturing vehicle interior material

Abstract

To provide: an illumination structure of an interior material for a vehicle capable of irradiating a vehicle interior with bright light having a high design property; and a method for manufacturing an interior material for a vehicle.SOLUTION: An illumination structure 1 in a vehicle interior material 10 comprises: a board member 12 constituting a vehicle indoor design surface 12A; and a plurality of light sources 42 provided on a vehicle outdoor side of the board member 12. Therein: the board member 12 includes outdoor-side recess portions 15 recessed from the vehicle outdoor surface 12B at positions each facing each of the plurality of light sources 42 in the vehicle outdoor surface 12B, and also includes indoor recess portions 16 each recessed in a concave shape from the design surface 12A on an opposite side of the outdoor recess portion 15 in the design surface 12A; and the board member 12 is provided with pin-shaped lens portions 21 each penetrating between the outdoor recess portion 15 and the indoor recess portion 16.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a lighting structure for a vehicle interior material and a manufacturing method for a vehicle interior material. [Background technology]

[0002] In recent years, various lighting structures have been proposed for improving the design of the interior of vehicles such as cars. For example, the following Patent Document 1 discloses a lighting structure that is installed on the ceiling of a vehicle, and that irradiates light from multiple light sources installed in the ceiling through multiple holes provided in an interior ceiling material into the vehicle interior, thereby creating a starry sky-like design. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] DE 102012016399 Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting structure disclosed in the above document, the decorative surface side of the ceiling material is covered with a skin, and light from the light source is irradiated into the vehicle cabin through the skin with the holes covered. In other words, it is a transmitted lighting that irradiates soft light.

[0005] On the other hand, there is a demand for emitting light with a higher brightness than that of transmitted illumination. To address this, drilling holes in the epidermis is considered, but the light emitted by simply drilling holes is monotonous, so there is a demand for improved design.

[0006] The technology disclosed in this specification has been completed in consideration of the above circumstances, and aims to provide a lighting structure for vehicle interior materials and a manufacturing method for vehicle interior materials that are capable of irradiating bright, highly aesthetic light into the interior of the vehicle. [Means for solving the problem]

[0007] The technology disclosed in this specification is a lighting structure for vehicle interior materials, comprising a board member that constitutes the interior design surface of the vehicle, and a plurality of light sources provided on the exterior side of the board member, the board member having an exterior recess that is recessed from the exterior surface of the vehicle compartment at a position on the exterior surface of the vehicle compartment facing each of the plurality of light sources, and an interior recess that is recessed concavely from the design surface on the opposite side to the exterior recess, and the board member is provided with a pin-shaped lens portion that penetrates between the exterior recess and the interior recess.

[0008] According to the above-described lighting structure, the light emitted from the light source can be irradiated through the lens portion, so that the lens portion can irradiate the interior of the vehicle with bright light and a highly aesthetic design.

[0009] The lens portion may have a surface arranged on the interior side of the vehicle cabin that is uneven. With this configuration, the light passing through the lens portion can be scattered, and a variety of light can be irradiated into the vehicle cabin.

[0010] The lens portion may have a surface facing the light source that is recessed in a concave lens shape. With this configuration, the light emitted from the light source can be focused to irradiate the interior of the vehicle with brighter light.

[0011] The lens portion may have a peripheral edge portion on a surface facing the light source that is formed into a pointed edge toward the outside of the vehicle cabin. With this configuration, the lens portion can be easily penetrated by the edge when the lens portion is punched through the board member.

[0012] The board member may include a base material and a skin that covers the vehicle interior side of the base material and constitutes the design surface, the exterior recess being formed in the base material and the interior recess being formed in at least the skin, and the lens portion may penetrate the base material and the skin.

[0013] The light source may be an LED mounted on an LED board, the LED board may be laminated on the exterior surface of the board member, and the LED may be accommodated in the exterior recess. With this configuration, it is possible to reduce the space that the light source occupies on the exterior side of the board member.

[0014] The lens portion may protrude into the exterior recess, and the portion of the lens portion disposed in the exterior recess may be held by a speed nut. With this configuration, a single fixing structure for the lens portion to the board member can be implemented.

[0015] The technology disclosed in this specification is a method for manufacturing a vehicle interior material having the above-mentioned lighting structure, and includes a board member forming process in which a plate-shaped member is press-molded to form the board member having the exterior side recess and the interior side recess, a lens portion penetrating process in which the lens portion of a driven-in lens body having the lens portion integrally formed at the tip of a base is penetrated from the interior side recess side of the board member to the inside of the exterior side recess, and a separation process in which the lens portion is separated from the base.

[0016] According to the above manufacturing method, the outdoor side recess and the indoor side recess can be formed at the same time in a predetermined position by press molding, thereby eliminating the need to align and glue together a component having an outdoor side recess and a separate component having an outdoor side recess, thereby avoiding misalignment and providing a simple manufacturing method.

[0017] Furthermore, compared to a configuration in which a lens portion is not provided or a configuration in which a planar lens portion that covers a hole on the outer surface side of the vehicle compartment of the board member is used, the pin-shaped lens portion can be positioned closer to the interior design surface of the vehicle, making the bright spot easier for occupants to see, and improving the design.

[0018] A weak portion may be provided at the boundary between the lens portion and the base portion. With this configuration, the base portion can be easily separated at a desired position during the separation step. Effect of the Invention

[0019] According to the technology disclosed in this specification, it is possible to provide a lighting structure for a vehicle interior material and a manufacturing method for a vehicle interior material that are capable of irradiating the interior of a vehicle with bright light with a highly aesthetic design. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is an explanatory diagram showing a ceiling of a vehicle having a ceiling lighting structure according to an embodiment; [Diagram 2] Enlarged cross-section of a part of the ceiling [Diagram 3] Enlarged cross-sectional view showing the ceiling material forming process (mold open state) [Figure 4] Enlarged cross-sectional view showing the ceiling material forming process (mold closed state) [Diagram 5] Enlarged cross-sectional view of a part of the ceiling material [Figure 6] Partially enlarged cross-sectional view showing the lens section penetration process (before penetration) [Figure 7] Partially enlarged exploded perspective view showing the lens portion penetration process (before penetration) [Figure 8] Enlarged cross-sectional view of a part of the driven lens body [Figure 9] Partially enlarged cross-sectional view showing the lens section penetration process (after penetration) [Figure 10] Partially enlarged cross-sectional view showing the separation process DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] One embodiment will be described with reference to Fig. 1 to Fig. 10. In this embodiment, a lighting structure (lighting structure of a vehicle interior material) 1 provided on a ceiling 10 of a vehicle and a manufacturing method of the ceiling 10 provided with the lighting structure 1 (manufacturing method of a vehicle interior material) will be illustrated.

[0022] 1, a ceiling (an example of a vehicle interior material) 10 of this embodiment is provided with a plurality of lighting units 11 above the rear seats of the vehicle. The plurality of lighting units 11 are randomly arranged over the entire ceiling 10. This ceiling 10 is configured with a ceiling material (an example of a board member) 12 constituting the interior design surface 12A of the vehicle, and a plurality of light source units 40 provided between the ceiling material 12 and the roof panel on the outer side of the vehicle compartment.

[0023] The ceiling material 12 is a plate-like member, and is shaped as a gentle arch or a generally flat plate as a whole. Fig. 2 is an enlarged cross-sectional view of a portion of the ceiling 10. The ceiling material 12 is composed of a base material 13 made of a thermoplastic resin such as polypropylene or a mixture of a thermoplastic resin and glass fiber or wood fiber, and a flexible skin 14 that covers the interior surface of the base material 13.

[0024] The base material 13 has, on its exterior surface 12B, a plurality of base material-side recesses (an example of an exterior recess) 15 recessed from the exterior surface 12B. The base material-side recesses 15 are shaped like hollowed-out flat cylinders with a slightly enlarged diameter on the opening side. The plurality of base material-side recesses 15 are randomly arranged over the entire ceiling material 12.

[0025] On the other hand, the skin 14 has a number of skin-side recesses (one example of interior recesses) 16 recessed from the design surface 12A, which is the interior surface of the skin 14. The skin-side recesses 16 are also shaped like hollowed-out flat cylinders with a slightly enlarged diameter on the opening side. The inner diameter of the skin-side recesses 16 is smaller (about 1 / 4) than the inner diameter of the base material-side recesses 15. The opposite surface (exterior surface) of the skin 14 to the skin-side recesses 16 protrudes toward the base material 13 (outdoor side) and is embedded in the interior surface of the base material 13. In other words, the interior surface of the base material 13 is recessed to match the protruding portion of the skin 14 (opposite surface of the skin-side recesses 16).

[0026] Some of the many epidermis-side recesses 16 are provided at positions overlapping with the substrate-side recesses 15 (opposite side of the substrate-side recesses 15) and are arranged so that the axis L coincides with that of the substrate-side recesses 15, while the rest are arranged at positions where the substrate-side recesses 15 are not provided, forming a uniform recessed pattern overall (see Figs. 1 and 5). The epidermis-side recesses 16 are provided at positions corresponding to all of the substrate-side recesses 15 formed on the substrate 13. It can also be said that the substrate-side recesses 15 are formed at positions overlapping with some of the many epidermis-side recesses 16.

[0027] An LED (an example of a light source) 42 of a light source unit 40 is housed inside each of the substrate-side recesses 15. The light source unit 40 includes an LED board 41 and a plurality of LEDs 42 mounted on the lower surface of the LED board 41.

[0028] The LED board 41 is configured of a flexible sheet-shaped FPC (flexible printed circuit board) made of an insulating material, and is disposed along the exterior surface 12B (upper surface) of the ceiling material 12 (base material 13). The LED board 41 is sized to be able to collectively cover a plurality of base material side recesses 15.

[0029] The LEDs 42 are mounted on the LED board 41 at positions (overlapping positions) corresponding to the base material side recess 15 of the ceiling material 12 when the LED board 41 is installed on the ceiling material 12. The LED board 41 is provided with a wiring pattern (not shown) that serves as a conductive path, and is electrically connected to a power supply device (not shown), thereby enabling power to be supplied from the power supply device to each of the LEDs 42.

[0030] The LEDs 42 mounted on the LED substrate 41 are top-illuminated LEDs that emit light from the end face (top face) opposite the LED substrate 41 when the LEDs 42 are mounted on the LED substrate 41. The directivity angle of these LEDs 42 is within a range of 120 degrees centered on an axis perpendicular to the top face.

[0031] 2, the ceiling 10 of this embodiment is provided with a lens portion 21 that penetrates in the plate thickness direction between the base material side recess 15 and the skin side recess 16 of the ceiling material 12. The lens portion 21 is a cylindrical pin-shaped member, and is made of a light-transmitting material such as polycarbonate.

[0032] An outside end 22 of the lens unit 21 protrudes into the substrate-side recess 15, and its outside end face 23 is disposed opposite the LED 42 housed in the substrate-side recess 15. The outside end face 23 of the lens unit 21 is a curved surface recessed into a concave lens shape, and its peripheral portion is formed into a pointed edge toward the LED 42 side (outside the room). The outside end 22 of the lens unit 21 (the portion protruding into the substrate-side recess 15) is held by a speed nut 35 disposed in the substrate-side recess 15, thereby preventing the lens unit 21 from coming loose from the inside of the room.

[0033] On the other hand, the end portion on the indoor side of the lens portion 21 is disposed near the bottom portion of the skin-side recess 16, and the end face 24 thereof has an uneven shape in which a plurality of faces are irregularly connected.

[0034] With this configuration, light emitted from each of the LEDs 42 housed in the multiple substrate-side recesses 15 is irradiated toward the interior of the vehicle (vertically downward) through the lens portion 21 (see FIG. 2). At this time, the light emitted from each of the LEDs 42 is focused by the concave-lens-shaped exterior end surface 23 of the lens portion 21, and emitted from the irregularly rugged interior end surface 24. In other words, bright light is irradiated into the vehicle interior while diffusing in a sparkling manner.

[0035] Next, a method for manufacturing the ceiling 10 having the lighting structure 1 of the present embodiment described above will be described. The manufacturing method for the ceiling 10 of the present embodiment includes a ceiling material forming process (an example of a board member forming process) in which a pre-board (an example of a plate-like member) 13P made of fiber and thermoplastic resin is press-molded to form the ceiling material 12 having the base material side recess 15 and the skin side recess 16, a lens portion penetrating process in which the lens portion 21 of the drive-in lens body 20, which has the lens portion 21 integrally formed at the tip of the base 25, is penetrated from the skin side recess 16 side of the ceiling material 12 to the inside of the base material side recess 15, a separation process in which the lens portion 21 is separated from the base 25, and a light source unit mounting process in which the light source unit 40 is mounted, are carried out in this order.

[0036] First, the molding die 50 for carrying out the ceiling material forming process will be described with reference to Fig. 3. The molding die 50 has a pair of dies 51, 61 for pressing the pre-board 13P from above and below to form the ceiling material 12. The pair of dies 51, 61 is composed of an upper die 51 arranged above and pressing the pre-board 13P from the surface side that will be the exterior surface (the upper surface side in Fig. 3), and a lower die 61 arranged below so as to face the upper die 51 and pressing the pre-board 13P from the surface side that will be the interior surface (the lower surface side in Fig. 3).

[0037] The upper die 51 is configured to include an upper base 52 extending in a substantially horizontal direction, and an upper protruding portion 53 protruding downward from the upper base 52. The upper protruding portion 53 is formed into a flat cylindrical shape tapered from the upper base 52 toward the tip side (downward in FIG. 3 ). This upper die 51 is a movable die that can be moved in the vertical direction by a driving device (e.g., an electric motor, an air cylinder, a hydraulic cylinder, etc.) not shown.

[0038] On the other hand, the lower mold 61 is configured to have a lower base 62 whose mold surface (upper surface) is generally shaped to conform to the upper base 52 of the upper mold 51, and a large number of flat cylindrical lower protrusions 63 that protrude upward from the lower base 62 with dimensions smaller than those of the upper protrusions 53. The lower protrusions 63 are provided overall so as to be regularly aligned along the vehicle longitudinal direction and vehicle width direction when the ceiling material 12 is attached to the vehicle, and some of them are arranged so as to coincide with the axis of the upper protrusions 53 at positions facing the upper protrusions 53 of the upper mold 51. It can also be said that the upper protrusions 53 are provided at positions where their axes coincide with those of some of the regularly aligned lower protrusions 63.

[0039] When the molding die 50 is in a closed state, a predetermined gap is set between the mold surface (lower surface) of the upper base 52 and the mold surface (upper surface) of the lower base 62, making it possible to form the ceiling material molding space S (see FIG. 4). When the molding die 50 is in a closed state, a predetermined gap is also set between the protruding end portion of the upper protruding portion 53 and the protruding end portion of the lower protruding portion 63 which face each other.

[0040] Next, a method for manufacturing the ceiling 10 having the lighting structure 1 of this embodiment using the above-mentioned molding die 50 will be specifically described.

[0041] <Ceiling material formation process> In the ceiling material forming process, first, the pre-board 13P, which is made of fibers bound by a thermoplastic resin, and the skin 14 are placed at a predetermined position between the upper mold 51 and the lower mold 61 so that the pre-board 13P is on the upper side and the skin 14 is on the lower side (see FIG. 3). Next, the upper mold 51 and the lower mold 61, which have been heated by a heating device (not shown), are closed as shown in FIG. 4, whereby the pre-board 13P is press-molded by the mold surfaces of the upper mold 51 and the lower mold 61.

[0042] As a result, the pre-board 13P and the skin 14 are bonded together and are shaped to match the shape of the ceiling material molding space S. That is, a ceiling material 12 is formed in which a plurality of base material-side recesses 15 are formed on the upper surface of the base material 13 and a large number of skin-side recesses 16 are formed on the lower surface of the skin 14. At this time, the portion of the skin 13 pressed by the lower die protrusion 63 is pressed into the lower surface of the relatively soft pre-board 13P and is embedded in the base material 13. That is, the surface of the base material 13 opposite to the surface on which the base material-side recesses 15 are formed (the interior surface) is recessed together with the skin 14.

[0043] At positions where the substrate-side recesses 15 of the ceiling material 12 thus formed are arranged, a skin-side recess 16 having the same axis L as the substrate-side recess 15 is provided on the skin 14 side. In this state, there is no communication between the substrate-side recess 15 and the skin-side recess 16 that are arranged coaxially.

[0044] Furthermore, the skin-side recesses 16 are also arranged in positions where the substrate-side recesses 15 are not provided, forming a uniform recessed pattern overall, so that the surface of the skin 14 (the surface that becomes the decorative surface 12A of the ceiling 10) has excellent design properties.

[0045] After the thermoplastic resin contained in the ceiling material 12 has cooled and solidified, the upper mold 51 and the lower mold 61 are opened and the ceiling material 12 is demolded (see FIG. 5).

[0046] <Lens penetration process> Next, the lens portion 21 is penetrated through the obtained ceiling material 12 from the skin-side recess 16 side to the inside of the substrate-side recess 15. The lens portion 21 can be penetrated through the ceiling material 12 by using the driving-in lens body 20 and the driving-in jig 30.

[0047] As shown in Fig. 6 and Fig. 7, the driving lens body 20 has a lens portion 21 integrally provided on the tip side of a base portion 25. The lens portion 21 and the base portion 25 are made of the same material. More specifically, the base portion 25 has a cylindrical main body portion 27 having a diameter slightly larger than that of the cylindrical pin-shaped lens portion 21, a tapered inclined reduced diameter portion 26 provided on the tip side of the main body portion 27, and a protruding portion 28 provided at the rear end of the main body portion 27 and protruding to the side, and of these, the tip of the reduced diameter portion 26 is integrally connected to the lens portion 21. Note that a cut portion (an example of a fragile portion) 29 cut from the outer periphery is formed in part of the boundary between the lens portion 21 and the base portion 25 (reduced diameter portion 26) (see Fig. 8).

[0048] The driving jig 30 is cylindrical with a diameter larger than that of the base 25 of the driving lens body 20, and has a holding hole 31 in its center that extends along the axis of the driving jig 30, and is capable of holding the main body 27 of the base 25 within the holding hole 31. When the driving lens body 20 is held by the driving jig 30, the reduced diameter portion 26 protrudes from the holding hole 31 toward the tip side. The base 25 is restricted from moving toward the tip side relative to the driving jig 30 by the overhanging portion 28.

[0049] When penetrating the lens portion 21 into the ceiling material 12, first the driving-in lens body 20 is held in the holding hole 31 of the driving jig 30, and the lens portion 21 protruding from the driving jig 30 is penetrated from the skin side recess 16 side to the inside of the substrate side recess 15 (see Figure 9).

[0050] In this way, lens portion 21 is punched through a portion of substrate 13 and skin 14 where both are thinner than the other portions, making the punching operation easy. In addition, the peripheral portion of the tip surface (outside end surface 23) of lens portion 21 located on the opposite side of base portion 25 has a sharp edge, so that lens portion 21 can easily punch through ceiling material 12 by its edge.

[0051] The driving-in lens body 20 and the driving jig 30 are set so that an operator can push the driving jig 30 and the driving lens body 20 into the position where the top surface of the driving jig 30 hits the surface (design surface 12A) of the skin 14, thereby penetrating the lens section 21 to the correct position. At this time, by placing a speed nut 35 in advance at the bottom of the base material-side recess 15, the lens section 21 punched out of the ceiling material 12 is inserted inside the speed nut 35, and thus the lens section 21 is held in a state where it is prevented from coming off from the skin 14 side (the room side).

[0052] <Separation process> When the lens portion 21 penetrates the skin 14 and the substrate 13 and its tip side protrudes to the correct position in the substrate-side recess 15 (the upper surface of the driving jig 30 abuts against the design surface 12A of the skin 14) and the tip side is held by the speed nut 35, the base portion 25 of the driving-in lens body 20 is cut off from the lens portion 21 (see FIG. 10). At this time, since a cut portion 29 extending in a part of the circumferential direction is provided between the lens portion 21 and the reduced diameter portion 26, the base portion 25 is cut off from the lens portion 21 at the correct position, i.e., at approximately the same position as the bottom surface of the skin-side recess 16. Furthermore, the cut surface at this time is not flat but has a randomly uneven shape.

[0053] <Light source unit installation process> Finally, the light source unit 40, in which the LEDs 42 are mounted at a predetermined position (a position facing the substrate-side recess 15 when the LED board 41 is placed on the exterior surface of the base material 13), is placed at a predetermined position on the exterior surface 12B of the base material 13. This brings the LEDs 42 into a state of being housed within the substrate-side recess 15. The LEDs 42 and the exterior-facing end surface 23 of the lens portion 21 are also placed in a state of being opposed to each other (see FIG. 2). In this manner, the ceiling 10 having the lighting structure 1 of this embodiment is completed.

[0054] Next, the effects will be described. The lighting structure 1 for the ceiling 10 of the vehicle of this embodiment includes a ceiling material 12 constituting the interior design surface 12A of the vehicle, and a plurality of LEDs 42 provided on the exterior side of the ceiling material 12. The ceiling material 12 includes a base material side recess 15 recessed from the exterior surface 12B at a position facing the plurality of LEDs 42 on the exterior surface 12B, and a skin side recess 16 recessed from the design surface 12A on the opposite side of the base material side recess 15. The ceiling material 12 includes a pin-shaped lens portion 21 penetrating between the base material side recess 15 and the skin side recess 16.

[0055] According to the above-described lighting structure 1, the light emitted from the LED 42 can be irradiated through the lens portion 21, so that the lens portion 21 can irradiate bright light with a high design quality into the vehicle interior.

[0056] The end surface 24 of the lens portion 21 that is disposed on the interior side is formed in an uneven shape. With this configuration, the light that passes through the lens portion 21 can be scattered, and a variety of light can be irradiated into the vehicle interior.

[0057] The surface of the lens portion 21 facing the LED 42 is recessed in a concave lens shape. With this configuration, the light emitted from the LED 42 can be focused to irradiate brighter light into the vehicle interior.

[0058] The peripheral edge of the surface of the lens portion 21 facing the LED 42 has a pointed edge facing the outside of the room. With this configuration, when the lens portion 21 is punched through the ceiling material 12, the edge makes it easier to penetrate the lens portion 21.

[0059] The ceiling material 12 is composed of a base material 13 and a skin 14 that covers the indoor side of the base material 13 and constitutes the indoor design surface 12A, with the base material side recess 15 formed in the base material 13 and the skin side recess 16 formed across the skin 14 and the base material 13, and the lens portion 21 penetrating the base material 13 and the skin 14.

[0060] The LEDs 42 are mounted on an LED board 41, and the LED board 41 is laminated on the exterior surface 12B of the ceiling material 12, and the LEDs 42 are housed in the base material-side recess 15. With this configuration, the space occupied by the LEDs 42 on the exterior side of the ceiling material 12 can be eliminated.

[0061] The lens portion 21 protrudes into the substrate-side recess 15, and the portion disposed in the substrate-side recess 15 is held by a speed nut 35. With this configuration, it is possible to implement a single fixing structure of the lens portion 21 to the ceiling material 12.

[0062] In addition, the manufacturing method of the ceiling 10 equipped with the above-mentioned lighting structure 1 includes a ceiling material forming process in which a pre-board 13P is press-molded to form a ceiling material 12 having a substrate side recess 15 and a skin side recess 16, a lens portion penetrating process in which the lens portion 21 of the drive-in lens body 20, which has a lens portion 21 integrally formed at the tip of a base 25, is penetrated from the skin side recess 16 side of the ceiling material 12 to the inside of the substrate side recess 15, and a separation process in which the lens portion 21 is separated from the base 25.

[0063] According to the above manufacturing method, the substrate-side recess 15 and the skin-side recess 16 can be formed at the same time at a predetermined position by press molding, which eliminates the need to align and bond the substrate 13 on which the substrate-side recess 15 is formed and the skin 14 on which the skin-side recess 16 is formed, thereby preventing misalignment and providing a simple manufacturing method.

[0064] Furthermore, compared to a configuration in which the lens portion 21 is not provided on the ceiling material 12, or a configuration in which a planar lens portion that covers a hole on the exterior surface 12B side of the ceiling material 12 is used, the pin-shaped lens portion 21 can be positioned closer to the interior design surface 12A of the vehicle, making the bright spot easier for occupants to see, and improving the design.

[0065] In addition, a fragile notch 29 is provided at the boundary between the lens portion 21 and the base portion 25. With this configuration, the base portion 25 can be easily separated at a desired position during the separation process.

[0066] <Other embodiments> The technology disclosed in this specification is not limited to the embodiments described above and illustrated in the drawings, and for example, the following embodiments are also included within the technical scope.

[0067] (1) In the above embodiment, the ceiling material 12 is configured with the base material 13 and the skin 14 that covers the interior surface of the base material 13, but the skin 14 may be omitted. In such a case, the base material may be configured to have a recess on the interior surface.

[0068] (2) In the above embodiment, the lens portion 21 is in the shape of a cylindrical pin. However, the lens portion may be in the shape of a polygonal prism, such as a triangular prism.

[0069] (3) In the above embodiment, the indoor side end face 24 of the lens portion 21 is shown as an irregularly uneven surface, but the technical scope also includes an embodiment in which the indoor side end face of the lens portion is shown as a regularly uneven surface or a flat surface.

[0070] (4) In the above embodiment, the outdoor side end 22 of the lens portion 21 protrudes into the substrate side recess 15, but the outdoor side end of the lens portion does not have to protrude into the outdoor side recess. In addition, the technical scope also includes a configuration in which the outdoor side end face of the lens portion is not concave lens shaped, and a configuration in which the peripheral portion of the outdoor side end face of the lens portion is not edge-shaped.

[0071] (5) The structure for fixing the lens portion to the board member is not limited to the above embodiment.

[0072] (6) In the above embodiment, the skin side recess 16 has a smaller diameter than the substrate side recess 15. However, the indoor side recess may have the same diameter as the outdoor side recess or a larger diameter than the outdoor side recess.

[0073] (7) In the above embodiment, the surface of the skin 14 opposite to the surface on which the skin-side recess 16 is provided is made convex and bites into the substrate 13. However, the technical scope also includes a configuration in which the skin-side recess recesses only the skin and does not recess the underside of the substrate.

[0074] (8) In the above embodiment, the skin 14 is provided with the skin-side recesses 16 in greater number than the base-side recesses 15. However, the number of indoor-side recesses may be the same as the number of outdoor-side recesses.

[0075] (9) In the above embodiment, the light source unit 40 is attached after the lens portion 21 is inserted through the ceiling material 12. However, the light source unit may be attached to the board member before the lens portion is inserted through the ceiling material 12.

[0076] (10) The notch 29 provided in the driving lens body 20 can be omitted.

[0077] (11) In the above embodiment, a vehicle ceiling 10 is given as an example of a vehicle interior material. However, the technology disclosed in this specification is not limited to the vehicle ceiling 10, and can be applied with various modifications to other vehicle interior materials such as door trim, pillar garnish, console box, dashboard, various instrument panels, deck trim, etc., as well as vehicle interior materials for trains, airplanes, ships, etc., and applications other than vehicle interior materials. [Explanation of symbols]

[0078] 1: Lighting structure (lighting structure of interior material for vehicles) 10: Ceiling (interior material for vehicles) 11: Lighting section 12: Ceiling material (board component) 12A: Design surface 12B: Exterior surface 13: Base material 13P: Pre-board (plate-shaped component) 14: Skin 15: Base material side recess (outdoor side recess) 16: Skin side recess (indoor side recess) 20: Drive-in lens body 21: Lens section 23: End face (surface facing light source) 24: End face (surface arranged on the indoor side) 25: Base 29: Cut-out section (weak section) 30: Drive-in jig 35: Speed ​​nut 40: Light source unit 41: LED board 42: LED (light source) 50: Mold 51: Upper mold 61: Lower mold

Claims

1. A lighting structure for a vehicle interior material, comprising: The vehicle interior design surface includes a board member and a plurality of light sources provided on the outside of the board member, the board member has an exterior recess that is recessed from the exterior surface of the vehicle cabin at a position facing each of the plurality of light sources on the exterior surface of the vehicle cabin, and an interior recess that is recessed from the design surface on the opposite side to the exterior recess on the design surface, A lighting structure for vehicle interior material, wherein the board member is provided with a pin-shaped lens portion penetrating between the exterior side recess and the interior side recess.

2. 2. The lighting structure for vehicle interior material according to claim 1, wherein a surface of the lens portion arranged on the interior side of the vehicle compartment is formed in an uneven shape.

3. 3. The lighting structure for vehicle interior material according to claim 1, wherein a surface of said lens portion facing said light source is recessed in a concave lens shape.

4. 3. The lighting structure for vehicle interior material according to claim 1, wherein the peripheral edge of the surface of the lens portion facing the light source is formed into a pointed edge facing the outside of the vehicle compartment.

5. The board member includes a base material and a skin that covers the interior side of the base material and constitutes the design surface, The exterior recess is formed in the base material, and the interior recess is formed in at least the skin, The lighting structure for a vehicle interior material according to claim 1 or 2, wherein the lens portion penetrates the base material and the skin.

6. the light source is an LED mounted on an LED substrate, 3. The lighting structure for a vehicle interior material according to claim 1, wherein the LED board is laminated on the exterior surface of the board member, and the LED is accommodated in the exterior recess.

7. 3. The lighting structure for vehicle interior material according to claim 1, wherein the lens portion protrudes into the exterior recess, and the portion of the lens portion disposed in the exterior recess is held by a speed nut.

8. A method for manufacturing an interior material for a vehicle having the lighting structure according to claim 1 or 2, comprising the steps of: a board member forming step of press-molding a plate-like member to form the board member having the outdoor side recess and the indoor side recess; a lens portion penetrating step of penetrating the lens portion of a drive-in lens body, the lens portion being integrally formed at the tip of a base, from the indoor recess side of the board member to the inside of the outdoor recess; and a separating step of separating the lens portion from the base portion.

9. The method for producing an interior material for a vehicle according to claim 8, wherein a weak portion is provided at a boundary between the lens portion and the base portion.

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