Vehicle ceiling lighting structure

Abstract

To provide a vehicle ceiling lighting structure which is difficult for a crew member to feel offensive in a vehicle cabin.SOLUTION: A vehicle ceiling illumination structure 1 includes: a ceiling material 11 composing a vehicle cabin inner surface of a ceiling 10 and having a plurality of hole parts 18 penetrating its plate surface; and a plurality of light sources 33 disposed corresponding to respective hole parts 18 outside the vehicle cabin of the ceiling material 11 and radiating inside of the vehicle cabin through the holl part 18. The ceiling material 11 includes; a first area 12 containing a part located at the upper part of the leg of a crew member when the crew member is seated on a seat 40 set in the vehicle cabin; and a second area 17 other than the first area 12. A hole axis of the hole part 18 set in at least the first area 12 tilts in a direction intersecting with a vertical direction.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The technology disclosed herein relates to a vehicle ceiling lighting structure. [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, which irradiates light from multiple light sources installed in the ceiling through multiple holes provided in an interior ceiling material, 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 structures disclosed in the above documents, when an occupant seated in a seat inside the vehicle cabin looks at or operates, for example, the screen of a tablet device such as a smartphone or a seat adjustment panel installed in the vehicle, the lighting installed in the ceiling material may reflect off the screen or panel, causing an eyesore (see Figure 16).

[0005] The technology disclosed in this specification has been completed in consideration of the above circumstances, and has an object to provide a vehicle ceiling lighting structure that is unlikely to be an eyesore for passengers in the vehicle cabin. [Means for solving the problem]

[0006] The technology disclosed in this specification is a vehicle ceiling lighting structure to be installed on the ceiling of a vehicle, comprising: a ceiling material that constitutes the interior surface of the ceiling and has a plurality of holes penetrating its plate surface; and a plurality of light sources that are installed on the outer side of the vehicle cabin of the ceiling material corresponding to each of the holes and illuminate the interior of the vehicle cabin through the holes, wherein the ceiling material has a first region that includes a portion that is located above the legs of an occupant when the occupant is seated in a seat installed in the vehicle cabin, and a second region other than the first region, and the hole axes of the holes installed in at least the first region are inclined in a direction intersecting the vertical direction.

[0007] According to the above configuration, the light emitted from the light source in the first area is not emitted straight down but in a direction tilted from the vertical. Therefore, when an occupant looks at a tablet device such as a smartphone above their legs, the light from the light source reflected on the screen is less likely to enter the eyes, thereby reducing the difficulty in seeing the screen due to reflected light.

[0008] The light source is mounted on a light source board, the hole is sized to accommodate the light source therein, and the periphery of each hole on the vehicle cabin exterior surface of the first region of the ceiling material is an intersecting surface portion that intersects perpendicularly to the extension direction of the hole axis, and the light source board may be arranged along the intersecting surface portion.

[0009] According to the above configuration, the light source mounted on the light source board can be accommodated in the hole with the optical axis of the light source aligned with the hole axis of the hole.

[0010] The light source substrate may be a flexible substrate having flexibility, and a plurality of the light sources may be mounted on one of the flexible substrates, and by providing slits in the flexible substrate in the first region, the one of the flexible substrates may be arranged in a manner that partially conforms to a plurality of the intersecting surfaces.

[0011] According to the above configuration, a plurality of light sources can be mounted on one flexible substrate, and the one flexible substrate can be disposed along a surface having projections and recesses.

[0012] In the first region, the hole may extend from an outer surface of the ceiling material toward the front and downward. According to the above configuration, it is possible to prevent light from a light source reflected by a screen of a tablet terminal or the like from reaching the eyes of an occupant.

[0013] The first area may be within a circular range with a radius of 200 mm that includes a portion located above the legs of an occupant seated on the seat. The seat may be movable in a longitudinal direction of the vehicle, and the first area may be within an elliptical range that is long in the longitudinal direction of the vehicle and is formed by two semicircles with a radius of 200 mm connected by two straight lines and that include a portion located above the legs of an occupant seated on the seat.

[0014] The interior surface of the ceiling material may be covered with a skin. Effect of the Invention

[0015] According to the technology disclosed in this specification, it is possible to provide a vehicle ceiling lighting structure that is unlikely to be an eyesore to passengers inside the vehicle cabin. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is an explanatory diagram showing a state in which a passenger is seated in a vehicle having a ceiling lighting structure according to an embodiment; [Diagram 2] Bottom view of the ceiling material seen from the floor side [Diagram 3] Enlarged plan view of the area within the dashed line in Figure 2 [Figure 4] FIG. 11 is a partially enlarged cross-sectional view showing the ceiling lighting structure in the second region. [Diagram 5] FIG. 1 is a partially enlarged plan view showing a ceiling lighting structure in a first region; [Figure 6] Section II of Figure 5 [Figure 7] FIG. 2 is a partially enlarged perspective view showing the exterior surface of the first region of the ceiling material; [Figure 8] Partially enlarged explanatory diagram of Fig. 1 [Figure 9] An enlarged front view of the vehicle with the occupant seated [Figure 10] FIG. 11 is a partially enlarged plan view showing a ceiling lighting structure for a first region according to another embodiment; [Figure 11] Cross-sectional view of FIG. 10 along II-II [Figure 12] FIG. 11 is a partially enlarged cross-sectional view showing a ceiling lighting structure for a first region according to another embodiment; [Figure 13] FIG. 11 is a partially enlarged cross-sectional view showing a ceiling lighting structure for a first region according to another embodiment; [Figure 14] FIG. 11 is a partially enlarged cross-sectional view showing a ceiling lighting structure for a first region according to another embodiment; [Figure 15] Partially enlarged plan view of a ceiling material according to another embodiment. [Figure 16] FIG. 1 is a partially enlarged explanatory diagram showing a state in which a passenger is riding in a vehicle having a conventional ceiling lighting structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] An embodiment will be described with reference to Fig. 1 to Fig. 9. In this embodiment, a lighting structure (vehicle ceiling lighting structure) 1 provided on a ceiling 10 of a vehicle will be illustrated. Note that the directions of the arrows FR and RR shown in each figure indicate the forward direction (the direction in which the vehicle travels) and the rearward direction, respectively, the directions of the arrows R and L indicate the rightward direction and the leftward direction with respect to the traveling direction, respectively, and the directions of the arrows UP and DW indicate the upward direction and the downward direction, respectively.

[0018] The lighting structure 1 of this embodiment is configured to include a ceiling material 11 that constitutes an interior ceiling 10 that is arranged inside the vehicle's cabin, and a light source unit 30 that is provided on the outside of the cabin of the ceiling material 11, between the ceiling material 11 and the roof panel.

[0019] The ceiling material 11 is a plate-like member made of a thermoplastic resin such as polypropylene, or a material made of a mixture of a thermoplastic resin and glass fiber or wood fiber. The ceiling material 11 is shaped as a gentle arch or a substantially flat plate as a whole. In this embodiment, the ceiling material 11 is formed as a substantially flat plate. A skin 20 is attached to the interior surface of the ceiling material 11 so as to cover the entire surface. The skin 20 is a sheet-like member that is sufficiently thin relative to the thickness dimension of the ceiling material 11 and has flexibility.

[0020] Fig. 2 is a bottom view of the ceiling 10 as seen from the floor side of the vehicle. In this embodiment, the ceiling material 11 has a first area 12 including two circular areas including directly above the area where the legs (thighs) of the occupant are placed when the occupant sits on a rear seat (one example of a seat) 40 installed in the vehicle cabin as shown in Fig. 1, and a rectangular area including directly above the area in the vertical direction of an operation panel 41 provided on an armrest at the center in the vehicle width direction, and a second area 17 other than the first area 12. The rectangular area of ​​the first area 12 is located slightly behind the two circular areas.

[0021] More specifically, the first area 12 is within a circular area of ​​radius r = 200 mm centered at a position L = 250 mm forward from the seating reference HP, which is the center of the seating area when an occupant sits on the rear seat 40, and within a 200 x 300 mm area directly above the rectangular operation panel 41 with a display size of 100 x 200 mm in the vertical direction. Note that the rear seat 40 of this embodiment is configured not to move in the front-rear direction, and the seating reference in the vehicle width direction is the center of the headrest. The vertical direction refers to the direction perpendicular to the vehicle floor surface.

[0022] 3 is a partially enlarged plan view of the ceiling material 11, and as shown in the figure, the ceiling material 11 has a plurality of holes 18 formed therein that penetrate the plate surface. The plurality of holes 18 are randomly arranged over the entire ceiling material 11. In this embodiment, the holes 18 (referred to as first holes 18A) provided in the first region 12 and the holes 18 (referred to as second holes 18B) provided in the second region 17 have different shapes. Below, the first holes 18A and the second holes 18B will each be described in detail.

[0023] First, the second hole 18B will be described prior to the first hole 18A. As shown in FIG. 4, the hole axis S2 of the second hole 18B extends in the vertical direction. It can be said that the hole axis S2 of the second hole 18B penetrates the ceiling material 11, which extends in the substantially horizontal direction, in a manner extending substantially perpendicular to the plate surface. The second hole 18B penetrates the front and back of the ceiling material 11 (from the exterior surface of the vehicle interior to the interior surface of the vehicle interior) in a straight line (cylindrical hole shape). The hole diameter of the second hole 18B is set to a dimension capable of accommodating the LED (an example of a light source) 33 of the light source unit 30 described later inside. Specifically, the hole diameter of the second hole 18B is set to a diameter of 5 mm.

[0024] Further, in the portion (overlapping portion) of the skin 20 corresponding to each second hole portion 18B, a skin-side second hole portion 21B is formed penetrating through the skin-side second hole portion 21B. The hole diameter of the skin-side second hole portion 21B is smaller than the hole diameter of the second hole portion 18B. In this embodiment, the hole diameter of the skin-side second hole portion 21B is 1 mm in diameter.

[0025] The LEDs 33 of the light source unit 30 are housed inside each second hole portion 18B. The light source unit 30 includes an LED board 31 and a plurality of LEDs 33 mounted on the lower surface of the LED board 31.

[0026] The LED board 31 is made of a sheet-like flexible printed circuit board (FPC) made of an insulating material and is arranged along the outer surface (upper surface) of the vehicle interior of the ceiling material 11 as shown in FIG. 4. The LED board 31 is sized to be able to cover the plurality of holes 18 collectively. The plurality of LEDs 33 are mounted on the LED board 31 at positions (overlapping positions) corresponding to the second holes 18B of the ceiling material 11 when the LED board 31 is installed on the ceiling material 11, and at each of the plurality of second holes 18B. The LED board 31 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) so that power can be supplied from the power supply device to each LED 33.

[0027] The LEDs 33 mounted on the LED substrate 31 are top-illuminated LEDs that emit light from the end face (top face) opposite the LED substrate 31 when the LEDs 33 are mounted on the LED substrate 31. The beam angle of these LEDs 33 is within a range of 120 degrees centered on an axis perpendicular to the top face.

[0028] With this configuration, light emitted from each LED 33 housed in each of the multiple second hole portions 18B is irradiated toward the interior of the vehicle cabin (vertically downward) through the second hole portion 18B and the skin side second hole portion 21B (see Figure 4).

[0029] Next, the first hole 18A provided in the first region 12 will be described. In this embodiment, the hole axis S1 of the first hole 18A is inclined in a direction intersecting the vertical direction (perpendicular to the floor surface of the vehicle) (inclined at an angle θ1 from the vertical direction) as shown in Fig. 6. Also, in the first region 12, within two circular ranges including directly above the vertical direction of the portion where the legs (thighs) of the occupant are placed, the hole axis S1 is inclined in a direction intersecting the front-rear direction (left-right direction in Fig. 5) in a plan view as shown in Fig. 5 (inclined at an angle θ2 from the front).

[0030] More specifically, in this embodiment, the hole axes S1 of the first holes 18A provided in the first region 12 are different in shape for each region. Hereinafter, of the two circular regions including directly above the portion where the legs (thighs) of the occupant are placed, the region located on the outside in the vehicle width direction is referred to as the outer first region 12A, and the region located on the inside in the vehicle width direction is referred to as the inner first region 12B. In addition, the rectangular region including directly above the operation panel 41 in the vertical direction is described as the central first region 12C (see FIG. 3).

[0031] Among the first holes 18A, the plurality of first holes 18A provided in the outer first region 12A are inclined at an angle of θ1 = about 7 degrees from the vertical direction from the outer surface of the vehicle compartment toward the inside of the vehicle compartment (downward) (see FIG. 6), and at an angle of θ2 = about 7 degrees from the front of the vehicle toward the outside in the vehicle width direction (see FIG. 5). Among the first holes 18A, the plurality of first holes 18A provided in the inner first region 12B are inclined at an angle of θ1 = about 7 degrees from the vertical direction from the outer surface of the vehicle compartment toward the inside of the vehicle compartment (downward), and at an angle of θ2 = about 7 degrees from the front of the vehicle toward the inside in the vehicle width direction. Furthermore, among the first holes 18A, the plurality of first holes 18A provided in the central first region 12C are inclined at an angle of θ1 = about 7 degrees from the vertical direction from the outer surface of the vehicle compartment of the ceiling material 11 toward the inside of the vehicle compartment and toward the front of the vehicle. The multiple first holes 18A are inclined in the same direction at the same angle in each of the regions 12A, 12B, and 12C.

[0032] The inclination angle θ1 of the first hole portion 18A from the vertical direction is preferably within a range of 5 to 10 degrees. In addition, within the above-mentioned circular range, the inclination angle θ2 of the first hole portion 18A from the front of the vehicle is preferably within a range of 5 to 10 degrees. By setting it within such a range, it is possible to make it more difficult for the light from the LED 33 reflected on the screen of the tablet terminal operated by hand to enter the eyes of the occupant without interfering with the presentation of the design such as a starry sky. Note that the inclination direction and inclination angle of the multiple first hole portions 18A may all be the same, or may be different for each individual first hole portion 18A.

[0033] Each of these first holes 18A penetrates the ceiling material 11 linearly (cylindrical hole-like) from the front to the back (from the exterior surface of the vehicle interior to the interior surface of the vehicle interior). The diameter of the first hole 18A is equal to the diameter of the second hole 18B. In other words, the dimensions are such that the LED 33 of the light source unit 30 can be housed therein. Specifically, the diameter of the first hole 18A is 5 mm.

[0034] In addition, a skin-side first hole 21A is formed through a portion (overlapping portion) of the skin 20 that corresponds to the hole edge portion on the vehicle interior side of the first hole 18A. The hole diameter of the skin-side first hole 21A is smaller than the hole diameter of the first hole 18A. In this embodiment, the hole diameter of the skin-side first hole 21A is 1 mm, which is the same as the diameter of the skin-side second hole 21B.

[0035] The LEDs 33 of the light source unit 30 are accommodated in the inside of each first hole 18A in the same manner as the second hole 18B. The LEDs 33 are mounted in the LED board 31 at positions (overlapping positions) corresponding to the first holes 18A of the ceiling material 11 when the LED board 31 is installed on the ceiling material 11, and in each of the first holes 18A. However, the hole axis S1 of the first hole 18A is inclined in a direction intersecting the vertical direction as described above. For this reason, it is difficult to accommodate the optical axes of the LEDs 33 mounted on one flat LED board 31 with their top faces facing vertically downward in each of the first holes 18A along the hole axis S1.

[0036] In this embodiment, the periphery of the hole edge of each of the first holes 18A on the outer surface of the vehicle compartment of the first region 12 of the ceiling material 11 is made into an intersecting surface 15 that intersects perpendicularly with the extension direction of the hole axis S1 of the first hole 18A, as shown in Figures 6 and 7. That is, the periphery of the hole edge of each of the first holes 18A on the outer surface side of the vehicle compartment is made into an inclined surface inclined from the horizontal direction.

[0037] The intersecting surface portion 15 will be described in more detail. As shown in Figs. 6 and 7, the intersecting surface portion 15 is a rectangular inclined surface that is arranged to connect between a concave surface portion 14 that is inclined toward the inside of the vehicle compartment from a horizontal surface portion 13 that extends in a substantially horizontal direction on the outer surface of the vehicle compartment of the first region 12, and a rising surface portion 16 that is inclined toward the outside of the vehicle compartment from the horizontal surface portion 13. Such an intersecting surface portion 15 is formed around each first hole portion 18A. That is, the outer surface of the vehicle compartment of the first region 12 has a plurality of unevenly shaped portions. In addition, the unevenness dimensions of the ceiling material 11 are set so that the length dimension of the hole axis S1 of the intersecting surface portion 15 and the first hole portion 18A penetrating from the intersecting surface portion 15 is approximately the same as the length dimension of the hole axis S2 of the second hole portion 18B.

[0038] The LED board 31 arranged on the outer surface of the vehicle cabin of the first region 12 is arranged partially along the intersecting surface 15, as shown in FIG. 6. Specifically, the LED board 31 has two U-shaped slits 32 extending in parallel from the recessed surface 14 to the intersecting surface 15, and connecting both ends of the rising surface 16, as shown in FIG. 5, in a state where the LED board 31 is installed on the outer surface of the vehicle cabin of the first region 12. The LED board 31 can be arranged along the outer surface of the vehicle cabin of the first region 12, which has a partially uneven shape, by cutting and raising the part of the LED board 31 surrounded by the slits 32 and arranging it along the recessed surface 14 and the intersecting surface 15. That is, the LED 33 can be arranged in the first hole 18A in a direction in which the optical axis coincides with the hole axis S1. The area of ​​the LED board 31 other than the part surrounded by the U-shaped slits 32 is arranged along the horizontal surface 13.

[0039] With this configuration, the light emitted from the LEDs 33 in the first region 12 passes through the first hole 18A tilted from the vertical direction, and is irradiated diagonally downward from the ceiling material 11 through the skin-side first hole 21A (see FIG. 6). Meanwhile, in the second region 17, as described above, the light emitted from the LEDs 33 passes through the second hole 18B, and is irradiated directly downward from the ceiling material 11 through the skin-side second hole 21B (see FIG. 4). Thus, although the irradiation directions are different between the first region 12 and the second region 17, the ceiling 10 as a whole can illuminate the interior of the vehicle like a starry sky.

[0040] Next, the effects will be described. The lighting structure 1 for the ceiling 10 of the vehicle of this embodiment includes a ceiling material 11 that constitutes the interior surface of the ceiling 10 and has a plurality of holes 18 penetrating the plate surface, and a plurality of LEDs 33 that are provided on the exterior side of the cabin of the ceiling material 11 in correspondence with each hole 18 (for each hole 18) and illuminate the interior of the cabin through the holes 18. The ceiling material 11 has a first region 12 including a portion located above the legs of an occupant when the occupant sits on a rear seat 40 installed in the cabin and a portion located above an operation panel 41, and a second region 17 other than the first region 12, and the hole axis S1 of the first hole 18A provided in the first region 12 is inclined in a direction intersecting the vertical direction.

[0041] According to the above configuration, the light emitted from the LED 33 in the first area 12 is not emitted straight down but in a direction tilted from the vertical. Therefore, when an occupant looks at a tablet device such as a smartphone above his / her legs, the light from the LED 33 reflected on the screen is less likely to enter the eye (see Figures 8 and 9), thereby reducing the difficulty in seeing the screen due to reflected light.

[0042] The LED 33 is mounted on an LED substrate 31, the hole 18 is large enough to accommodate the LED 33 therein, and the periphery of each first hole 18A on the exterior surface of the vehicle interior of the first region 12 of the ceiling material 11 is defined as an intersecting surface 15 that intersects perpendicularly to the extension direction of the hole axis S1, and the LED substrate 31 is arranged along the intersecting surface 15.

[0043] According to the above configuration, the LED 33 mounted on the LED board 31 can be housed in the first hole 18A with the optical axis of the LED 33 aligned with the hole axis S1 of the first hole 18A.

[0044] The LED substrate 31 is a flexible substrate having flexibility, and a plurality of LEDs 33 are mounted on one LED substrate 31. By providing slits 32 in the LED substrate 31 in the first region 12, one LED substrate 31 is arranged in such a manner that it partially follows a plurality of intersecting surfaces 15.

[0045] According to the above configuration, the LEDs 33 can be mounted on one LED board 31, and the one LED board 31 can be installed along a surface having projections and recesses.

[0046] In the first region 12, the first hole portion 18A penetrates the ceiling material 11 from the outer surface of the vehicle compartment toward the front and downward. The front side refers to a direction less than 90 degrees in the vehicle width direction (left and right direction) from the front, and less than 180 degrees overall. With this configuration, it is possible to make it more difficult for the light from the LED 33 reflected on the screen of the tablet terminal operated by hand to enter the eyes of the occupant.

[0047] The first area 12 is within a circular area with a radius of 200 mm that includes a portion located above the legs of an occupant seated in the rear seat 40. The interior surface of the ceiling material 11 is covered with a skin 20.

[0048] <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.

[0049] (1) In the above embodiment, the hole axes S1 of the first holes 18A provided in the first region 12 are different for each of the regions 12A, 12B, and 12C. However, the hole axes of the first holes may all be inclined in the same direction at the same angle. Alternatively, the hole axes of all the first holes may be inclined in different directions at different angles in a random manner. The first holes may also be formed to penetrate the ceiling material from the outside of the vehicle cabin toward the rear side. Note that the directions of the intersecting surfaces provided corresponding to the first holes and the slits for aligning the LED substrate along each of the intersecting surfaces are preferably set in accordance with the penetration direction of each hole.

[0050] (2) In the above embodiment, the circular first region 12 located above the occupant's legs is divided into two regions 12A, 12B in the interior / exterior direction of the vehicle, and the first hole portion 18A is inclined in a different direction (a direction inclined θ2 from the front to the left and right) for each region 12A, 12B. However, the circular first region can also be divided into three or more regions, and each region can be inclined in a different direction.

[0051] (3) In the above embodiment, the portion of the LED substrate 31 surrounded by the slit 32 is aligned with the recessed surface portion 14 and the intersecting surface portion 15. However, as shown in the lighting structure 2 in Fig. 10 and Fig. 11, the slit 132 may be provided so that the portion surrounded by the slit 132 is aligned with the rising surface portion 16 and the intersecting surface portion 15. In short, as long as the LED substrate 31 is aligned at least with the intersecting surface portion 15, the slit may be in any shape.

[0052] (4) Alternatively, if the LED board 131 is made of an elastic material, it is possible to stretch a portion of the LED board 131 so that it conforms to the entire exterior surface of the ceiling material 11, 111 without providing a slit (see Figures 12 and 13).

[0053] (5) In the above embodiment, a recessed surface portion 14 connected to the intersecting surface portion 15 is provided to make the length dimension of the hole axis S1 of the first hole portion 18A and the length dimension of the hole axis S2 of the second hole portion 18B equal. However, as shown in FIG. 13, a ceiling material 111 may be used in which the recessed surface portion is omitted, and the length dimensions of the first hole portion 18A and the second hole portion 18B are different.

[0054] (6) In the above embodiment, the interior side of the ceiling material 11 is covered with the skin 20, but the skin 20 may be omitted. Also, the skin 120 may be made of a light-transmitting material, and light from the LEDs 33 may be indirectly irradiated into the interior of the vehicle through the skin 120 without providing any skin-side holes (see FIGS. 12 and 13).

[0055] (7) The shape of hole 18 is not limited to a cylindrical hole shape. For example, as shown in FIG. 14, it is also possible to have a two-stage hole 118 (118A) with different diameters in the longitudinal direction, and is not limited to the above embodiment.

[0056] (8) In the above embodiment, the epidermis-side hole 21 has a diameter smaller than the diameter of the hole 18 provided in the ceiling material 11. However, the epidermis-side hole may have a diameter equal to that of the hole in the ceiling material or a diameter larger than that of the hole in the ceiling material.

[0057] (9) In the above embodiment, the first area 12 is defined as a circular area of ​​the ceiling 10 that is located above the thighs of an occupant when seated in a vehicle in which the rear seat 40 does not move. However, in the case of a vehicle in which the rear seat moves back and forth, as shown in FIG. 15, the first area 112 can be defined as the inner area of ​​an oval that is long in the fore-and-aft direction of the vehicle, with two semicircles connected by two straight lines. [Explanation of symbols]

[0058] 1, 2: lighting structure (vehicle ceiling lighting structure), 10: ceiling, 11, 111: ceiling material, 12, 112: first region, 15: intersecting surface portion, 17: second region, 18, 118: hole portion, 18A: first hole portion, 18B: second hole portion, 20, 120: skin, 30: light source unit, 31, 131: LED board (light source board), 32, 132: slit, 33: LED (light source), 40: rear seat (seat), S1: hole axis

Claims

1. A vehicle ceiling lighting structure provided on a ceiling of a vehicle, comprising: A ceiling material that constitutes the interior surface of the ceiling and has a plurality of holes penetrating a plate surface thereof; a plurality of light sources provided on the outer side of the vehicle cabin of the ceiling material in correspondence with each of the holes, the light sources irradiating the interior of the vehicle cabin through the holes; the ceiling material has a first region including a portion located above the legs of an occupant when the occupant sits in a seat installed in the vehicle compartment, and a second region other than the first region, A vehicle ceiling lighting structure, wherein the hole axes of the hole portions provided in at least the first region are inclined in a direction intersecting the vertical direction.

2. The light source is mounted on a light source substrate, The hole is sized to accommodate the light source therein, A periphery of each of the holes in the vehicle cabin outer surface of the first region of the ceiling material is an intersecting surface portion that intersects perpendicularly with an extension direction of the hole axis, The vehicle ceiling lighting structure according to claim 1 , wherein the light source substrate is disposed along the intersecting surface portion.

3. the light source substrate is a flexible substrate having flexibility, and a plurality of the light sources are mounted on one of the flexible substrates; 3. The vehicle ceiling lighting structure according to claim 2, wherein a slit is provided in the flexible substrate in the first region, so that one of the flexible substrates is disposed partially along a plurality of the intersecting surfaces.

4. The vehicle ceiling lighting structure according to claim 1 , wherein the hole in the first region penetrates the ceiling material from an outer surface of the vehicle compartment toward a front side and downward.

5. 3. The vehicle ceiling lighting structure according to claim 1, wherein the first region is within a circular range having a radius of 200 mm and including a portion located above the legs of an occupant seated on the seat.

6. 3. The vehicle ceiling lighting structure of claim 1, wherein the seat is movable in the fore-and-aft direction of the vehicle, and the first area includes a portion located above the legs of an occupant seated on the seat, and is within an elliptical area that is long in the fore-and-aft direction of the vehicle and is formed by two semicircles with a radius of 200 mm connected by two straight lines.

7. 3. The vehicle ceiling lighting structure according to claim 1, wherein the interior surface of the ceiling material is covered with a skin.

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