Vehicular lighting device

Abstract

To suppress light leakage at low cost.SOLUTION: A vehicular lighting device 130 is provided, which is mounted to vehicular interior material 20 and comprises: a light emitting portion 31; a lightproof case 36 which stores the light emitting portion 31 and has a case opening 36B to which light is emitted from the light emitting portion 31; and a lightproof member 37 which is provided to cover the case opening 36B and through which light emitted from the light emitting portion 31 through the case opening 36B passes. The lightproof member 37 has a fitting portion 36B that is inserted through the case 36 or through at least either of insertion holes 36D and 22D of the vehicular interior material 20. At least either of the case 36 and the lightproof member 37 has dimming portions 42 and 44 that reduce quantities of light that has emitted from the light emitting portion 31 toward the fitting portion 36B.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present technology relates to vehicle lighting devices. [Background technology]

[0002] It is known that lighting devices are attached to the passenger compartment of a vehicle such as a car for the purpose of improving visibility and convenience at night or in a dark place, or for the purpose of improving design, and an example of such a lighting device is described in Patent Document 1. The lighting device described in Patent Document 1 includes a housing, a plurality of layers made of transparent optical elements housed in the housing and each having an indication, a plurality of light sources connected to each of the plurality of layers, and an outer layer forming the outer (front) layer of the lighting device. The outer layer is opaque or completely black when the light source is not irradiated, and is translucent when the transparent optical elements are displayed by the activation of the light source. According to the lighting device, it is possible to create various visual effects by selectively lighting each of the plurality of layers and combining the indications formed on each of the plurality of layers. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2017-506180 Summary of the Invention [Problem to be solved by the invention]

[0004] The lighting device described in Patent Document 1 is illustrated in a schematic state in which it is incorporated in the door trim of an automobile. In order to actually fit the lighting device into the door trim, for example, a claw-shaped mounting portion may be provided on the outer layer, and the mounting portion may be attached to a mounting hole in the board of the door trim through a through hole in the housing. However, if the mounting portion is integrally formed on the outer layer, light leakage occurs from the mounting portion because the outer layer has translucency when the light source irradiates light. On the other hand, if a part of the outer layer including the mounting portion is formed from a light-shielding material to prevent light leakage, the outer layer is formed from two types of materials, a translucent material and a light-shielding material, which increases costs.

[0005] The objective of this technology is to suppress light leakage at low cost. [Means for solving the problem]

[0006] The vehicle lighting device related to the present technology is a vehicle lighting device that is attached to a vehicle interior material, and includes a light-emitting unit, a light-blocking case that houses the light-emitting unit and has a case opening through which light from the light-emitting unit is emitted, and a light-transmitting member that is arranged to cover the case opening and through which light emitted from the light-emitting unit through the case opening passes, the light-transmitting member having an attachment portion that is inserted into an insertion hole of at least one of the case or the vehicle interior material, and at least one of the light-transmitting member or the case has a light-reducing portion that reduces the amount of light traveling from the light-emitting unit to the attachment portion.

[0007] In this way, the light attenuation section can reduce the amount of light leakage that occurs from the attachment section of the light-transmitting member. As a result, it is possible to prevent the light leakage from being noticeable and the light utilization efficiency from decreasing. Since it is not necessary to form the attachment section of the light-transmitting member from a separate material (light-shielding material), it is possible to suppress light leakage at low cost.

[0008] The light-reducing section may be a light diffusion section that reduces the amount of light directed toward the attachment section by diffusing the light from the light-emitting section. The light-reducing section can be easily realized by providing a light diffusion section (for example, by forming an uneven texture on the surface).

[0009] The light-reducing portion may be a light-absorbing portion that absorbs the light from the light-emitting portion to reduce the amount of light directed toward the attachment portion. The light-reducing portion can be easily realized by providing an absorbent member (for example, by attaching a black tape-like member).

[0010] The light-transmitting member may further include a skin material that is provided on the light-transmitting member and partially blocks light emitted from the light-transmitting member. The skin material allows light to partially transmit, creating various visual effects. If the skin material reduces brightness, light leakage from the mounting portion becomes noticeable and light utilization efficiency is likely to decrease. However, this technology can effectively prevent such situations.

[0011] In addition, the light-shielding portion of the skin material may overlap with the light-reducing portion in a plan view. For example, when the light-reducing portion is realized by a light diffusion portion, there is a concern that the light-reducing portion may become excessively bright. However, by blocking the light emitted from the light-reducing portion by the light-shielding portion of the skin material, such a situation can be prevented. Effect of the Invention

[0012] According to the present technology, light leakage can be suppressed at low cost. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is an exploded perspective view showing a vehicle door according to a first embodiment; [Diagram 2] A plan view of the door trim with the lighting device attached, seen from the door panel side (outside the vehicle interior) [Diagram 3] Cross section of line II in Figure 2 [Figure 4] Cross-sectional view of line II-II in Figure 2 [Diagram 5] Exploded perspective view of the lighting device [Figure 6] FIG. 11 is a plan view of the lighting device and the door trim according to the second embodiment, as viewed from the door panel side (the vehicle exterior side). [Figure 7] Sectional view of line III-III in Figure 6 [Figure 8] FIG. 13 is an exploded perspective view of a lighting device according to a third embodiment. [Figure 9] FIG. 11 is a cross-sectional view of the door trim with the lighting device of FIG. 8 attached thereto, taken along line II in FIG. 2. [Figure 10] FIG. 3 is a cross-sectional view of a door trim to which a lighting device according to another embodiment is attached, taken along line II in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] <Embodiment 1> A vehicle door (one example of a vehicle door) 10 according to the first embodiment will be described with reference to Fig. 1 to Fig. 5. The symbols F, B, L, R, U, and D in the drawings respectively indicate the front and rear in the longitudinal direction of the vehicle, the left and right in the vehicle width direction (left-right direction) when viewed from the rear of the vehicle, and the top and bottom in the vertical direction (up-down direction).

[0015] 1, the vehicle door 10 includes a metal door panel 11, a door trim 20 (an example of a vehicle interior material) made of a resin material such as polypropylene, a lighting device 30 (an example of a vehicle lighting device) attached to the door trim 20, a glass window 13, and a window shade 15. The door trim 20 is disposed below the window 13 and constitutes the interior surface of the vehicle door 10. The door trim 20 is attached to the door panel 11 from the inside of the vehicle compartment (an example of a vehicle compartment).

[0016] The window shade 15 is provided between the door trim 20 and the door panel 11. The window shade 15 includes a sheet 16, a gripping portion 17 connected to an upper end portion of the sheet 16, and a winding portion 18 that winds up and stores the sheet 16. The window shade 15 is disposed directly below a shade opening 22A (described later) of the door trim 20. The sheet 16 is pulled out and deployed through the shade opening 22A or stored in the winding portion 18 by an occupant gripping the gripping portion 17 and moving it in the vertical direction.

[0017] The door trim 20 has a light-shielding property and includes a lower board 21 and an upper board 22 disposed above the lower board 21. The lower board 21 has an armrest 23 formed on its upper portion so as to protrude into the interior of the vehicle. The upper board 22 has a shade opening 22A, a lighting port 22B (an example of a lighting portion), a first board insertion hole 22C, a plurality of second board insertion holes 22D, a step portion 22E, a first protruding portion 22F, and a second protruding portion 22G. Each portion of the upper board 22 will be described in detail below.

[0018] The shade opening 22A is provided for pulling out the window shade 15 to cover the window 13. The shade opening 22A is formed in an elongated shape in the front-rear direction at the upper end of the upper board 22. The upper end of the upper board 22 according to this embodiment is curved toward the door panel 11, and the shade opening 22A is provided in a substantially central position in the vehicle width direction of the upper end of the curved upper board 22. The shape and size of the shade opening 22A are appropriately changed according to the specifications of the window shade 15.

[0019] The lighting port 22B is an opening for passing light emitted from the lighting device 30 into the vehicle compartment. The lighting device 30 is attached so that its emitted light is emitted from the lighting port 22B of the upper board 22 toward the vehicle compartment. The lighting port 22B is provided on the upper board 22 below the shade opening 22A and above the armrest 23. The lighting port 22B according to this embodiment has a trapezoidal shape in a plan view. The lighting port 22B has a shape and size following a translucent member 37 and a skin material 38 (translucent member 37 covered with a skin material 38) of the lighting device 30 described later so that they can be fitted in without any gaps (see FIG. 3).

[0020] 3 and 4, the first board insertion hole 22C and the multiple second board insertion holes 22D are provided for mounting the lighting device 30 to the upper board 22. A storage section 36A of a case 36 of the lighting device 30, which will be described later, is inserted into the first board insertion hole 22C. The first board insertion hole 22C has a planar shape (trapezoidal in this embodiment) following the lighting port 22B, and is formed to be slightly smaller than the lighting port 22B.

[0021] The second board insertion holes 22D are inserted and engaged with the mounting portions 37B of the light-transmitting member 37 of the lighting device 30. The second board insertion holes 22D are provided at the opening edge portion 22E1 of the first board insertion hole 22C. The second board insertion holes 22D have a shape and size following the mounting portions 37B of the light-transmitting member 37, and a plurality of them (five in this embodiment) are provided at positions facing the mounting portions 37B. The second board insertion holes 22D according to this embodiment are formed in an elongated rectangular shape following the shape of the first board insertion holes 22C. However, the shape and size of the second board insertion holes 22D are not limited thereto as long as the mounting portions 37B can be inserted therethrough.

[0022] The step portion 22E is a bent portion that protrudes from the opening edge portion of the lighting port 22B toward the door panel 11 (the side opposite to the passenger compartment). The step portion 22E surrounds the first board insertion hole 22C and includes an opening edge portion 22E1 of the first board insertion hole 22C.

[0023] The first protrusion 22F and the second protrusion 22G protrude toward the door panel 11 at the opening edge 22E1 of the first board insertion hole 22C. The protrusions 22F and 22G have light blocking properties and are provided at positions adjacent to the mounting portion 37B of the light-transmitting member 37 of the lighting device 30. The protrusions 22F and 22G play a role in blocking light leaking toward the door panel 11 through the mounting portion 37B. The protrusions 22F and 22G may be integrally formed with the upper board 22 or may be attached to the upper board 22 as separate members.

[0024] The protrusions 22F and 22G are preferably adjacent to the mounting portion 37B so as to be on the outer side (the side farther from the light emitting unit 31 or the case 36 than the mounting portion 37B) with respect to the mounting portion 37B. As shown in FIG. 2, the first protrusions 22F according to this embodiment are provided at positions adjacent to each of the two mounting portions 37B provided at the upper portion of the opening edge portion 22E1 of the first board insertion hole 22C, i.e., two in total, one of the first protrusions 22F is provided at a position adjacent to the two mounting portions 37B provided at the upper portion of the opening edge portion 22E1 of the first board insertion hole 22C directly above. Of the two first protrusions 22F, one adjacent to the front mounting portion 37B is the first front protrusion 22F1, and the other adjacent to the rear mounting portion 37B is the first rear protrusion 22F2. The first front protrusion 22F1 is linear in a plan view, and can block light leakage upward from the mounting portion 37B directly below (light leakage upward so as to move away from the light emitting unit 31 or the case 36). The first rear protrusion 22F2 is L-shaped in a plan view and can block and suppress light leakage upward and backward from the mounting portion 37B directly below (light leakage upward and backward, away from the light-emitting portion 31 or the case 36) (see the white arrow in Figure 3).

[0025] The second protrusion 22G according to the present embodiment is provided at a position adjacent to the mounting portion 37B provided on the side of the opening edge portion 22E1 of the first board insertion hole 22C. The second protrusion 22G is provided in a pair in a linear shape in a plan view, and is adjacent to the rear of the mounting portion 37B. The second protrusion 22G can block and suppress light leakage from the mounting portion 37B toward the rear (one example of the lateral direction) (light leakage toward the rear, away from the light emitting unit 31 or the case 36) (see the outlined arrow in FIG. 4).

[0026] The second protrusion 22G also serves to support the cable (wire harness) 19 that supplies power to the light-emitting unit 31 (more specifically, the light source 32) of the lighting device 30. This allows the cable 19 to be properly routed without interfering with other components. By using it for both purposes, it is possible to suppress an increase in cost associated with the arrangement of the second protrusion 22G. In this embodiment, since the armrest 23 is provided below the lighting device 30 and the window shade 15 is provided above the lighting device 30, it is preferable that the cable 19 is routed from the side (particularly the rear) of the lighting device 30. Note that the second protrusions 22G do not have to be paired to sandwich the cable 19, and the shape is not limited as long as they protrude so as to be able to support the cable 19 using a cable tie or the like.

[0027] The protrusions 22F, 22G may be provided for all (five in this embodiment) mounting portions 37B. Also, each of the protrusions 22F, 22G may be provided for a plurality (e.g., two) of the mounting portions 37B, not for each mounting portion 37B. For example, if the first front protrusion 22F1 is extended rearward and connected to the first rear protrusion 22F2, one first protrusion adjacent to the two mounting portions 37B can be formed.

[0028] 3 to 5, the lighting device 30 includes a light-emitting unit 31, a case 36, a light-transmitting member 37, and a skin material 38. Each part of the lighting device 30 will be described in detail below.

[0029] The light emitting unit 31 includes a light source 32, a light source substrate 33, and a light guide 34. The light source 32 is an LED, which is a point light source, and is mounted on the light source substrate (LED substrate) 33 such that a light emitting surface 32A of the light source 32 faces one side (incident side) 34A of the light guide 34. The light source substrate 33 has a long and narrow plate shape and extends along the incident side 34A of the light guide 34. A cable 19 (see FIG. 2) for supplying power to the light source 32 is routed from the vehicle and connected to the light source substrate 33.

[0030] The light guide 34 is a plate-shaped light guide (light guide plate). The light guide 34 is formed of, for example, a synthetic resin material (e.g., acrylic resin such as PMMA, polycarbonate, etc.) that has a refractive index sufficiently higher than that of air and is almost transparent. The light guide 34 guides the light from the light source 32 incident from the incident side surface 34A so that the light is emitted from the exit main surface 34B on the illumination port 22B side (vehicle compartment side) while propagating along the plate surface direction. This makes the light emitting unit 31 a planar light emitting body that can emit light in a planar manner using the light source 32, which is a point light source.

[0031] The case 36 is shaped like a tray that opens toward the vehicle compartment and houses the light-emitting unit 31 (i.e., the light source 32, the light source substrate 33, and the light guide 34). The case 36 has a light-blocking property and is disposed so as to cover the lighting port 22B of the upper board 22 from the door panel 11 side. The case 36 has a housing portion 36A, a case opening 36B, a case opening edge portion 36C, a first case insertion hole 36D, and a second case insertion hole 36E.

[0032] The accommodation portion 36A is the bottom and side portions of the tray-shaped case 36, and accommodates the light emitting portion 31. The accommodation portion 36A is inserted into the lighting port 22B from the vehicle compartment side.

[0033] The case opening 36B is an opening through which light passes from the main emission surface 34B of the light guide 34. The case opening 36B has a shape and size that overlaps with the illumination port 22B in a plan view, and the light from the main emission surface 34B of the light guide 34 passes through the case opening 36B and the illumination port 22B and is emitted to the vehicle compartment side.

[0034] The case opening edge 36C is an opening edge surrounding the case opening 36B and has a frame shape in a plan view. The case opening edge 36C is sandwiched between the light-transmitting member 37 and the opening edge 22E1 of the first board insertion hole 22C of the upper board 22.

[0035] The first case insertion hole 36D and the second case insertion hole 36E are provided in the case opening edge portion 36C. The mounting portion 37B of the light-transmitting member 37 is inserted into the first case insertion hole 36D. The mounting portion 37B passes through the first case insertion hole 36D and is inserted into the second board insertion hole 22D and engaged with the second board insertion hole 22D. The first case insertion hole 36D has a shape and size that overlaps with the second board insertion hole 22D, and is provided with the same number of mounting portions 37B (five in this embodiment) at predetermined intervals, similar to the second board insertion hole 22D. A plurality of second case insertion holes 36E are provided to fix the case opening edge portion 36C to the upper board 22 with fastening members 46 (e.g., screws) (see FIG. 2).

[0036] However, the case opening edge portion 36C may be formed with a narrow frame-like width so as not to overlap with the mounting portion 37B of the light-transmitting member 37. In that case, at least the first case insertion hole 36D through which the mounting portion 37B passes is unnecessary.

[0037] The light-transmitting member 37 is provided on the vehicle compartment side of the case 36, and passes light from the light-emitting unit 31 toward the vehicle compartment through the case opening 36B. The light-transmitting member 37 is fitted into the lighting port 22B of the upper board 22 together with the skin material 38. The light-transmitting member 37 has a plate-shaped main body 37A and a plurality of mounting portions 37B, and each portion is integrally formed, for example, from a resin material having light transmittance. The main body 37A has a planar shape (trapezoidal in this embodiment) following the lighting port 22B, and covers and protects the light-emitting unit 31 from the vehicle compartment side. The main body 37A may have the effect of diffusing the light emitted from the light guide 34.

[0038] The mounting parts 37B protrude from the main body 37A toward the door panel 11 and are inserted into the first case insertion hole 36D of the case 36 and the second board insertion hole 22D of the upper board 22. The protruding end of the mounting part 37B is claw-shaped and engages with the opening edge of the inserted second board insertion hole 22D from the door panel 11 side (see Figs. 3 and 4). As a result, the mounting part 37B is attached to the upper board 22 in a state in which the case opening edge 36C of the case 36 is sandwiched between the opening edge of the first board insertion hole 22C of the upper board 22. The mounting parts 37B are provided in a plurality (five in this embodiment) at a predetermined interval. The mounting parts 37B are formed in an elongated rectangular shape so that the direction along the extension direction of the opening edge 22E1 of the first board insertion hole 22C of the upper board 22 is the longitudinal direction when viewed in a plan view. However, the shape and size of the attachment portion 37B are not limited to this and can be changed as appropriate.

[0039] The skin material 38 is provided on the surface of the main body 37A of the light-transmitting member 37 so as to cover the light-transmitting member 37. The skin material 38 partially blocks light emitted from the light-transmitting member 37, thereby improving the design and suppressing unnecessary light leakage from the light-transmitting member 37. The skin material 38 is visible from the vehicle compartment as shown in FIG. 1, and constitutes the design surface of the lighting device 30. As shown in FIGS. 3 and 4, the skin material 38 covers the first main surface 37A1 and the side surface 37A2 of the main body 37A on the vehicle compartment side. In addition, the skin material 38 covers a portion (non-overlapping portion) of the second main surface 37A3 on the door panel 11 side of the main body 37A where the mounting portion 37B and the case 36 are not provided.

[0040] The skin material 38 according to this embodiment has a plurality of skin openings 38A on the first main surface 37A1 of the main body 37A. The parts of the skin material 38 other than the skin openings 38A are light-shielding parts 38B. Light emitted from the main body 37A of the light-transmitting member 37 is irradiated through the skin openings 38A. Meanwhile, the emitted light is shielded by the parts of the skin material 38 where the skin openings 38A are not provided. The material of the skin material 38 is not limited, and may be, for example, leather, a resin material, or a coating material. The shape and size of the skin openings 38A can be changed as appropriate.

[0041] Next, the effects of the present technology will be described. According to the above-mentioned configuration, the attachment portion 37B is integrally provided with the light-transmitting member 37, and a part of the light emitted from the light-transmitting member 37 is irradiated to the door panel 11 side through the attachment portion 37B, causing light leakage. The light emitted from the light-transmitting member 37 is partially blocked by the skin material 38, but if the attachment portion 37B is also covered with the skin material 38, there is a concern that the workability may decrease or the skin material 38 may be torn when attaching the attachment portion 37B to the upper board 22. Furthermore, if the attachment portion 37B is formed from a light-shielding material different from the main body portion 37A of the light-transmitting member 37 in order to prevent light leakage from the attachment portion 37B, the light-transmitting member 37 is formed from two types of materials, a light-transmitting material and a light-shielding material, which increases the cost.

[0042] Therefore, the upper board 22 according to this embodiment is provided with light-shielding protrusions 22F, 22G at positions adjacent to the mounting portion 37B of the light-shielding member 37 of the lighting device 30. In this way, the light leakage from the mounting portion 37B can be blocked by the protrusions 22F, 22G (see the white arrows in Figs. 3 and 4). As a result, it is possible to prevent the light leakage from being noticeable and the light utilization efficiency from being reduced.

[0043] In particular, in this embodiment, the shade opening 22A is provided above the mounting portion 37B, and when the grip portion 17 is pulled upward, there is a concern that light leaking upward from the mounting portion 37B passes through the shade opening 22A and becomes noticeable to the occupant. In addition, a slight gap may be generated between the door panel 11 and the door trim 20 due to manufacturing variations, and there is a concern that light leaking to the rear of the mounting portion 37B passes through the gap and becomes noticeable to the user, for example, when the vehicle door 10 is opened or closed. The protrusions 22F and 22G can effectively suppress the upward and rearward light leakage, which may be noticeable to the occupant.

[0044] <Embodiment 2> A first protrusion 122F according to the second embodiment will be described with reference to Fig. 6 and Fig. 7. In the second embodiment, the first protrusion 122F is different from that in the first embodiment. In the second embodiment, the same configuration and operation and effect as those in the first embodiment will not be described again.

[0045] A sound-absorbing sheet-like member 40 (so-called NVH felt) is provided on the door panel 11 side (the side opposite to the vehicle compartment) of the upper board 122 of the door trim 120. The sheet-like member 40 is provided at a position closer to the door panel 11 so as to cover each component such as the lighting device 30 attached to the upper board 122. Note that the sheet-like member 40 in Fig. 6 is shown by a two-dot chain line in order to clearly indicate other components covered by the sheet-like member 40.

[0046] The sheet-like member 40 is made of, for example, nonwoven fabric. The sheet-like member 40 can suppress the transmission of noise and vibration to the vehicle cabin, improving quietness. As shown in FIG. 7, the first protruding portion 122F (the first front protruding portion 122F1 and the first rear protruding portion 122F2) has a portion having an L-shaped cross section. The sheet-like member 40 is suspended from the L-shaped cross section of the first protruding portion 122F. More specifically, the sheet-like member 40 is suspended by inserting the L-shaped cross section of the first protruding portion 122F into the insertion hole 40A of the sheet-like member 40. In this way, the first protruding portion 122F can also be used as a support member for the sheet-like member 40. By using the first protruding portion 122F for both purposes, it is possible to suppress an increase in cost associated with the provision of the first protruding portion 122F.

[0047] <Embodiment 3> An illumination device 130 according to the third embodiment will be described with reference to Fig. 8 and Fig. 9. In the third embodiment, a case 136 and a light-transmitting member 137 are different from those in the first embodiment. In the third embodiment, the same configuration and effects as those in the first embodiment will not be described again.

[0048] The case 136 has a light absorbing portion 42 (an example of a light attenuating portion) on the case opening edge portion 36C. The light absorbing portion 42 is, for example, a black tape-like member, and is attached along the case opening 36B. The light-transmitting member 137 also has a light diffusing portion 44 (another example of a light attenuating portion) on the first main surface 37A1 on the passenger compartment side. The light diffusing portion 44 is, for example, a concave-convex texture, and is formed by processing a portion of the first main surface 37A1 that faces the case opening edge portion 36C.

[0049] 9, the light absorbing section 42 absorbs light traveling from the light emitting section 31 toward the mounting section 37B through the main body section 37A of the light-transmitting member 137, thereby reducing the amount of light traveling toward the mounting section 37B. The light diffusing section 44 diffuses the light traveling from the light emitting section 31 toward the mounting section 37B through the main body section 37A of the light-transmitting member 137, thereby reducing the amount of light traveling toward the mounting section 37B. As a result, the amount of light leakage occurring from the mounting section 37B can be reduced.

[0050] On the other hand, when the light diffusion portion 44 is provided on the light-transmitting member 137 in this manner, there is a concern that the luminance of the light diffusion portion 44 increases and becomes excessively bright. For this reason, it is preferable to cover the vehicle compartment side of the light diffusion portion 44 with the skin material 38. That is, it is preferable not to provide the skin opening 38A in the portion of the skin material 38 that overlaps with the light diffusion portion 44 in a plan view, but to block light with the light blocking portion 38B.

[0051] In this embodiment, the light absorbing portion 42 is provided in the case 136 and the light diffusing portion 44 is provided in the light-transmitting member 137, but the above-mentioned light reducing effect can be achieved if only one of them is provided. Alternatively, the light diffusing portion 44 may be provided in the case 136 and the light absorbing portion 42 may be provided in the light-transmitting member 137. Furthermore, the lighting device 130 according to this embodiment may be attached to the door trim 20, 120 according to the first and second embodiments.

[0052] <Other embodiments> The present technology is not limited to the embodiments described above and illustrated in the drawings, and for example, the following embodiments are also included in the technical scope of the present technology.

[0053] (1) As shown in FIG. 10, the case 36 according to the first and second embodiments may have a case opening edge 36C disposed closer to the door panel 11 than the opening edge of the first board insertion hole 22C of the upper board 22. In this case, the protruding end of the claw-shaped mounting portion 37B is hooked on the opening edge of the first case insertion hole 36D from the door panel 11 side, thereby engaging with the case 36. The mounting portion 37B of the light-transmitting member 37 is attached to the upper board 22 with the opening edge of the first board insertion hole 22C of the upper board 22 sandwiched between the mounting portion 37B and the case opening edge 36C. Such a configuration may be applied to the case 136 according to the third embodiment. In this case, the light absorbing portion 42 is preferably provided, for example, on the opening edge of the first board insertion hole 22C of the upper board 22.

[0054] (2) In the above embodiment, a vehicle is exemplified as a vehicle to which the vehicle lighting device is attached, but the vehicle to which the vehicle lighting device is attached may be various vehicles. For example, the lighting device disclosed herein can be applied to vehicles such as trains, recreational vehicles, and unmanned vehicles as ground vehicles, airplanes and helicopters as flying vehicles, and ships and submarines as marine and underwater vehicles. [Explanation of symbols]

[0055] 20, 120: door trim (vehicle interior material), 22D: second board insertion hole (insertion hole), 130: lighting device, 31: light emitting portion, 36, 136: case, 36B: case opening, 36D: first case insertion hole (insertion hole), 37, 137: light transmissive member, 37B: mounting portion, 38: skin material, 38B: light shielding portion, 42: light absorbing portion (light reducing portion), 42: light diffusing portion (light reducing portion)

Claims

1. A vehicle lighting device that is attached to a vehicle interior material, A light emitting portion; a light-shielding case that houses the light-emitting unit and has a case opening through which light from the light-emitting unit is emitted; a light-transmitting member provided to cover the case opening and through which light emitted from the light-emitting unit through the case opening passes, the light-transmitting member has an attachment portion that is inserted into an insertion hole of at least one of the case or the vehicle interior material, At least one of the light-transmitting member and the case has a light-reducing portion that reduces the amount of light traveling from the light-emitting portion to the mounting portion.

2. The vehicle lighting device according to claim 1 , wherein the light reducing portion is a light diffusing portion that diffuses the light from the light emitting portion to reduce the amount of light traveling toward the attachment portion.

3. The vehicle lighting device according to claim 1 , wherein the light reducing portion is a light absorbing portion that absorbs light from the light emitting portion to reduce an amount of light traveling toward the attachment portion.

4. The vehicle lighting device according to claim 1 , further comprising a skin material provided on the light-transmitting member for partially blocking light emitted from the light-transmitting member.

5. The vehicle lighting device according to claim 4 , wherein the light blocking portion of the covering material overlaps with the light reducing portion in a plan view.

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