JP6544581B2 - Vehicle lighting system - Google Patents

Description

  The present invention relates to a vehicle lighting device.

  As a vehicle lighting device provided in vehicles, such as a vehicle, the thing of the following patent document 1 is known, for example. The device of Patent Document 1 includes a light source and a cylindrical light guide bar that illuminates the surroundings by guiding light from the light source. Such a lighting device is provided in the interior material of a vehicle, and is used, for example, to illuminate a vehicle interior or to enhance design.

JP, 2014-129098, A

  When providing an illuminating device in the interior material of a vehicle, it is generally known that the interior material is provided with a longitudinal accommodation space and is accommodated in the accommodation space. Thus, the lighting device can be arranged without being exposed to the vehicle compartment side. In addition, such a storage space is configured by a part of the interior material (for example, a board member or a longitudinal decoration member that configures the interior material). For this reason, the size and shape of the accommodation space may be limited depending on the design and configuration of the interior material. As an example of such accommodation space, the accommodation space which becomes small as it goes to the other end side from the one end side of a longitudinal direction can be mentioned. In order to accommodate the light guide rod in such a storage space, it is conceivable to reduce the diameter of the light guide rod toward the other end. However, when such a tapered light guide bar is used, light guiding performance (e.g., uniformity of emitted light) is lowered, and there is a concern that the designability may be impaired.

  The present invention is completed based on the above-mentioned circumstances, and makes it possible to accommodate in the accommodation space which becomes smaller as it goes from the one end side to the other end side in the longitudinal direction, while further enhancing the designability It is an object of the present invention to provide a lighting device capable of

  In order to solve the above-mentioned subject, the present invention is a lighting device for vehicles accommodated in a longitudinal accommodation space provided in an interior material for vehicles, and the accommodation space is perpendicular to its longitudinal direction. The length of the direction is a space that decreases as it goes from one end side to the other end side in the longitudinal direction, and the vehicle lighting device includes a light source disposed at the one end side and the other end with respect to the light source A flexible light guide bar disposed on the side, having a long cylindrical shape in the longitudinal direction and having a uniform value over the entire length, and disposed on the other end side with respect to the light guide bar A light guide plate extending in the longitudinal direction, wherein the light guide bar is a first light incident surface which is an end surface disposed opposite to the light emission surface of the light source; A first light emitting surface which is an outer peripheral surface that emits light incident from the light incident surface toward the vehicle room; And a second light emitting surface which is the other end surface for emitting light incident from the first light incident surface to the light guide plate side, and the light guide plate is at least at an end portion on the other end side. The length in the first direction is set to a value smaller than the diameter of the light guide rod, and the light is incident from a second light incident surface that is disposed to face the second light emitting surface, and the second light incident surface And a third light emitting surface for emitting light toward the vehicle compartment.

  According to the above configuration, the light emitted from the light source is incident on the light guide bar, and then part of the light is emitted from the first light exit surface, and the other part of the light is incident on the light guide plate. The light incident on the light guide plate is emitted from the light emission surface (third light emission surface) of the light guide plate. Therefore, light from the light source can be emitted from the light guide bar and the light guide plate toward the vehicle room. Further, in the above configuration, the width of the accommodation space (the length in the first direction orthogonal to the longitudinal direction) is a space that decreases as it goes from one end side to the other end side in the longitudinal direction. Here, since the length of the light guide plate in the first direction at the end on the other end side is set to a value smaller than the diameter of the light guide rod, the light guide plate is accommodated in a smaller space than the light guide rod. It is possible to With such a configuration, the light guide rod and the light guide plate can be accommodated even in the case where the accommodation space is a space that becomes smaller toward the other end side.

  In addition, since the light guide rod is in the form of a cylinder having a uniform diameter over the entire length, light can be guided more uniformly as compared with the light guide plate. As a result, it is possible to emit more uniform light into the vehicle compartment as compared with the one configured by the light guide plate over the entire length, and the design can be enhanced. In addition, even when the light guide rod having a uniform diameter is bent, the light guide performance is unlikely to be deteriorated, which is preferable in that respect as well.

  Further, the light guide bar may include a core having a cylindrical shape elongated in the longitudinal direction, and a covering that covers an outer peripheral surface of the core. A light guide rod whose diameter is set to a uniform value over the entire length can be easily manufactured by making the diameter of the core material and the thickness of the covering material constant.

  In addition, the second light incident surface of the light guide plate is a curved surface that protrudes toward the second light emission surface of the light guide rod, and at the protruding end, the second light incident surface is made of the core material. The light emitting surface can be in contact with the light emitting surface.

  By bringing the second light incidence surface into contact with the second light emission surface, the two surfaces can be positioned reliably. In addition, when the second light incident surface is a curved surface that protrudes toward the second light emission surface, and the protruding end is in contact with the core material, the second light incident surface abuts on the covering material. This can be suppressed more reliably. Thereby, the situation where external force acts on a covering material can be controlled, and exfoliation of a covering material can be controlled.

  The light guide bar further includes a cover portion covering at least a part of the outer peripheral surface of the light guide rod and made of a material capable of transmitting light, and the cover portion is integrally provided with the light guide plate. can do.

  By providing the cover part which covers the outer peripheral surface of a light guide stick, a light guide stick can be protected. Moreover, since the cover part is comprised with the material which can permeate | transmit light, the situation which interrupts | blocks the emitted light from the outer peripheral surface of a light guide stick can be suppressed. Further, since the light guide plate and the cover portion are made of materials capable of transmitting light, they can be integrally provided, and the number of parts can be reduced.

  The light guide bar and a longitudinal holding member for holding the light guide plate may be provided, and the holding member may extend along a longitudinal direction of the light guide bar and a first groove portion in which the light guide bar is fitted. And a second groove extending along the longitudinal direction of the light guide plate and in which the light guide plate is fitted. By providing such a holding member, the light guide rod and the light guide plate can be fixed more reliably.

  According to the present invention, it is possible to provide a lighting device capable of further enhancing the design, while being able to be accommodated in the accommodation space which becomes smaller from one end side to the other end side in the longitudinal direction.

Front view showing the top of the door trim with the lighting device A view from below of the bezel included in the lighting device The perspective view which looked at the bezel with which a lighting installation is provided from the lower part A perspective view of the light transmission member and the light guide bar as viewed from above Front view showing the light transmitting member and the light guide rod (view from inside the vehicle compartment) Top view showing the light transmitting member Sectional drawing which cut | disconnected the illuminating device along the extension direction of the light guide stick Cross-sectional view in which the light transmitting member and the light guide rod are cut along the extending direction Sectional view showing a lighting device (corresponding to a view cut along the line IX-IX in FIG. 1) Sectional drawing which shows an illuminating device (corresponding | compatible to the figure cut | disconnected by XX of FIG. 1) Top view showing mounting claws and mounting holes Top view showing the process of inserting the mounting claw into the mounting hole Sectional view showing mounting claws and mounting holes (corresponding to a view cut along the line XIII-XIII in FIG. 11) Sectional view showing the end of the light guide and the through hole

  One embodiment of the present invention will be described with reference to FIGS. FIG. 1: is a front view which shows typically the upper part of the door trim 10 provided with the illuminating device 20 (vehicle illuminating device) of this embodiment. Further, in each of the drawings, the vehicle longitudinal direction is the X axis direction, the vehicle interior / outside direction is the Y axis direction, and the vertical direction is the Z axis direction. The door trim 10 constitutes a vehicle door by being attached to a door inner panel (not shown) constituting a door panel.

  The door trim 10 (vehicle interior material) is provided with a trim main body 11 as shown in FIG. As shown in FIG. 1, the trim main body 11 includes a first board 12 (upper board) constituting an upper portion of the trim main body 11 and a second board 13 (for example, lower board) disposed below the first board 12. And a bezel 21 which is a decorative member disposed between the first board 12 and the second board 13.

  The first board 12 and the second board 13 are made of, for example, a synthetic resin material such as polypropylene. In addition, the material of the 1st board 12 and the 2nd board 13 is not limited to this, For example, what mixed wood-based material and a synthetic resin etc. may be used. The first board 12 and the second board 13 are connected to each other, for example, by fastening means (thermal caulking, screws, etc.) using mounting bosses and mounting pieces.

  As shown in FIG. 2 and FIG. 3, the bezel 21 has a long shape in the longitudinal direction of the vehicle. 2 and 3 are views of the bezel 21 as viewed from below, and the upper side in FIG. 2 corresponds to the vehicle interior side, and the left side corresponds to the vehicle front side. As shown in FIGS. 7 and 9, the illumination device 20 includes a bezel 21, an LED 41, a cylindrical light guide bar 50, a positioning member 60 disposed between the LED 41 and the light guide bar 50, and a bezel. 21 and a light transmitting member 70 (see FIG. 9) disposed to face each other.

  The lighting device 20 is unitized by assembling the LED 41 (light source), the light guide rod 50, the positioning member 60, and the light transmitting member 70 with the bezel 21. That is, the bezel 21 is a holding member that holds the LED 41, the light guide bar 50, the positioning member 60, and the light transmitting member 70. As shown in FIGS. 2 and 3, the bezel 21 includes a bezel main body 22 having a long shape in the longitudinal direction of the vehicle, and an LED housing 25 in which the LED 41 is housed. As shown in FIG. 9, the bezel main body portion 22 has a substantially U shape opened downward in a cross sectional view. Further, a groove 22B (a first groove, see also FIG. 3) is formed in the bezel main body 22 along the longitudinal direction, and the light guide rod 50 is fitted in the groove 22B. 22 are arranged.

  Further, a wall 22D on the vehicle interior side of the bezel main body 22 is exposed to the vehicle interior (left side in FIG. 9), and constitutes a design surface of the trim main body 11. A plurality of mounting holes 22A (see FIG. 3) are formed in the bezel main body 22. For example, a screw (not shown) is inserted into the mounting hole 22A, and the bezel main body 22 is attached to the mounting boss (not shown) provided on the second board 13 via the screw. .

  The LED 41 (light source) is mounted on the LED substrate 42 as shown in FIG. 7 and connected to a power supply device (not shown) such as a battery mounted on a vehicle via a wire (not shown) ing. The LED 41 and the LED substrate 42 are housed in the LED housing 25. The LED accommodating portion 25 has a substantially box shape opening at the rear side of the vehicle, and is provided at one end (in the embodiment, the rear end of the vehicle) of the bezel main body 22 in the longitudinal direction. Further, a cover member 26 is attached to the LED housing portion 25 so as to close the opening. The cover member 26 is in contact with the housed LED substrate 42 from the rear side of the vehicle. Thereby, the displacement to the vehicle rear side of LED board 42 (as a result, LED41) is regulated.

  The light guide rod 50 has flexibility and light transmittance, and as shown in FIG. 7, a core material 51 (core) made of acrylic resin and a covering material 56 (cladding made of fluorine resin, for example) It consists of). The core member 51 has a circular cross section, and has a long (rod-like) shape long in the vehicle front-rear direction. The covering material 56 is set to have the same length as the core material 51, and covers the entire outer peripheral surface (side surface) of the core material 51. The covering material 56 is fixed to the core material 51 by fixing means such as pressure bonding, for example. In addition, as the light guide rod 50, it is possible to use the well-known light guide disclosed by Unexamined-Japanese-Patent No. 2005-306233 which is an open patent gazette, Unexamined-Japanese-Patent No. 6-75120 etc., for example. The light guide rods 50 are arranged in a longitudinal direction of the bezel main body 22 (a direction along the longitudinal direction of the vehicle). In addition, such a light guide rod 50 can be manufactured, for example, by cutting a material formed by extrusion molding into a desired length.

  The LED 41 is disposed at one end of the core member 51, and the light emission surface 41A of the LED 41 is opposed to the end surface 51A of the core member 51 (first light incident surface, one end surface opposed to the light emission surface of the light source) It is arranged. Thereby, the light emitted from the LED 41 enters the inside of the core material 51 from the end face 51A, and after being guided by repeating total reflection in the inside, the outer peripheral surface 50A of the light guide rod 50 The light is emitted from the entire surface of the first light emitting surface of the light rod to the outside.

  In addition, the cylindrical portion 27 is integrally provided in the LED housing portion 25. The cylindrical portion 27 is configured to rise from the LED accommodation portion 25 to the front side (left side in FIG. 7) of the vehicle. The inner diameter of the cylindrical portion 27 is set to a value slightly larger than the diameter of the light guide rod 50, and one end of the light guide rod 50 is inserted into the cylindrical portion 27. Thereby, the end by the side of LED41 in the peripheral face of light guide stick 50 is covered with tubed part 27, and one end of light guide stick 50 is held. Further, at the tip end of the cylindrical portion 27, the inner diameter becomes larger toward the tip. Thus, the light guide rod 50 can be easily inserted into the cylindrical portion 27.

  As shown in FIG. 7, the positioning member 60 is housed inside the LED housing portion 25 and covers the LED 41 from the front side of the vehicle. The positioning member 60 is made of a synthetic resin material (e.g., acrylic or polycarbonate) having a sufficiently high refractive index (higher than light) and a sufficiently high refractive index than air. The positioning member 60 has a main portion 61 having a U-shape in cross section, a protrusion 62 formed at a position facing the light emitting surface 41 A of the LED 41 in the main portion 61, and an end face of the core 51 in the main portion 61. And a protruding portion 63 formed at a position facing the portion 51A. That is, the projecting portion 62 and the projecting portion 63 constitute a light transmitting portion disposed between the light emitting surface 41 A of the LED 41 and the end surface 51 A of the core material 51.

  The main body 61 is in contact with the peripheral end of the LED substrate 42 at the end on the rear side of the vehicle. Further, a projection 28 formed on the inner surface of the LED housing 25 is in contact with the surface of the main body 61 on the front side of the vehicle. Thereby, the displacement of the main body 61 is restricted in the longitudinal direction of the vehicle. The protrusion 62 has a substantially hemispherical shape that protrudes toward the light emitting surface 41 A of the LED 41. That is, in the projecting portion 62, the surface facing the light emitting surface 41A of the LED 41 is a curved surface 62A that protrudes toward the LED 41.

  The protrusion 63 has a substantially hemispherical shape that protrudes toward the end surface 51 A of the core 51. In the projecting portion 63, the surface facing the end surface 51A of the core material 51 is a curved surface 63A protruding toward the end surface 51A. The protruding end of the protruding portion 63 is in contact with the end surface 51A. That is, the curved surface 63A is a contact surface that contacts the end surface 51A. Moreover, while the curved surface 63A abuts on the end surface 51A, the curved surface 63A does not abut on the covering material 56.

  In the present embodiment, the light emitted from the LED 41 is incident from the curved surface 62A of the projecting portion 62 into the projecting portion 62, and thereafter, from the end surface 51A of the core member 51 through the curved surface 63A of the projecting portion 63 It is incident on the inside of the The emitted light from the LED 41 is configured to be collected in the process of passing through the curved surface 62A and the curved surface 63A. That is, the positioning member 60 has a function of positioning the end face 51 A of the light guide rod 50 with respect to the LED 41 and a function of a lens (convex lens) which condenses the light emitted from the LED 41.

  Next, accommodation space S2 which accommodates the illuminating device 20 is demonstrated. As shown in FIGS. 9 and 10, the lighting device 20 is mainly housed in a housing space S2 which is a gap formed between the first board 12 and the second board 13. As shown in FIG. 1, the accommodation space S2 has a long longitudinal shape in the longitudinal direction of the vehicle, and the length in the vertical direction (the first direction orthogonal to the longitudinal direction) is from the vehicle rear side (one end side in the longitudinal direction) The space gradually decreases toward the front side (the other end side in the longitudinal direction).

  Further, as shown in FIG. 1, a wall portion 22 </ b> D on the vehicle interior side of the bezel 21 has a shape that follows the housing space S <b> 2. In FIG. 1, the length in the vertical direction of the rear end portion of the accommodation space S2 is indicated by B1, and the length in the vertical direction of the front end portion of the accommodation space S2 is indicated by B2. That is, the length B2 is set to a value smaller than the length B1. Note that at least the bezel 21, the light guide rod 50, and the light transmitting member 70 of the components that constitute the lighting device 20 may be stored in the housing space S <b> 2.

  The wall 22D of the bezel 21 constituting the design surface is arranged at the front end of the vehicle so as to be continuous with a decorative member (not shown) of another interior material (for example, an instrument panel). For this reason, the width of the wall 22D (and hence the length of the accommodation space S2 in the vertical direction) is set so as to be viewed continuously with other decorative members of the interior material from the viewpoint of design. As a result, in the present embodiment, the width of the wall 22D of the bezel 21 is set so as to gradually decrease from the vehicle rear side toward the vehicle front side, and as a result, the accommodation space S2 proceeds from the vehicle rear side toward the vehicle front It has become smaller and smaller space.

  While the accommodation space S2 is a space that gradually decreases from the rear side to the front side of the vehicle, the diameter Z1 (see FIG. 9) of the light guide rod 50 is set to a uniform value over the entire length. In addition, although the diameter Z1 of the light guide stick | rod 50 is set, for example to 3.5 mm, it is not limited to this. However, the diameter of the light guide bar 50 provided with the core material 51 and the covering material 56 is generally considered to be difficult to manufacture at 3.5 mm or less. Also, the light guide bar 50 is manufactured, for example, by extrusion, in which case the diameter needs to be a uniform value over the entire length.

  And in this embodiment, length B1 of accommodation space S2 in a vehicle back end is set as a value larger than diameter Z1 of light guide stick 50 at least, and can accommodate bezel 21, light guide stick 50, and cover part 71. Size is set. On the other hand, the length B2 of the housing space S2 is set to, for example, a value smaller than the diameter Z1 of the light guide bar 50, and is set to a size that can not accommodate the bezel 21 and the light guide bar 50. It is done.

  Under such circumstances, if the light guide rod 50 is to be disposed over the entire length of the accommodation space S2, the length of the accommodation space S2 in the vertical direction is small at the vehicle front end of the accommodation space S2. , The light guide bar 50 can not be accommodated. For this reason, in the present embodiment, in the region on the vehicle rear side in the accommodation space S2 (a space large enough to accommodate the light guide bar 50), light can be emitted into the vehicle compartment by arranging the light guide bar 50. In the region on the vehicle front side of the accommodation space S2 (a space of a size that can not accommodate the light guide rod 50), the light is transmitted by arranging the light guide portion 75 (described later) that is a part of the light transmission member 70. It is possible to emit into the vehicle cabin.

  Next, the configuration of the light transmitting member 70 will be described. The light transmitting member 70 is made of a synthetic resin material (for example, acrylic or polycarbonate) having a sufficiently high refractive index (high transparency) and a refractive index sufficiently higher than that of air. The light transmitting member 70 has a plate shape elongated in the longitudinal direction of the vehicle as shown in FIG. 5, and as shown in FIGS. 9 and 10, the light transmitting member 70 is attached to the bezel main body 22 from below. ing. The light transmitting member 70 includes a cover 71 (see FIG. 9) that covers the light guide bar 50 from below, and the above-described light guide 75 (see FIG. 10). That is, the light guide portion 75 and the cover portion 71 are integrally provided, and each has a plate shape.

  As shown in FIGS. 7 and 8, in the present embodiment, the LEDs 41, the light guide rods 50 (and the cover portions 71), and the light guide portions 75 are disposed in this order from the rear side to the front side of the vehicle. That is, the LED 41 is disposed on the vehicle rear side (one end side in the longitudinal direction of the accommodation space) in the accommodation space S2, and the light guide rod 50 is on the vehicle front side (left side in FIG. 7 in the longitudinal direction of the accommodation space) It is arranged at the other end side). Furthermore, the light guide portion 75 (light guide plate) is disposed on the front side of the light guide bar 50 with respect to the vehicle. As shown in FIG. 4, the cover 71 is formed with a groove 71A extending along the extending direction of the light guiding rod 50, and the light guiding rod 50 is fitted in the groove 71A as shown in FIG. It is united. The light guide rod 50 is sandwiched by the bezel 21 and the cover portion 71.

  As shown in FIGS. 4 and 10, the light guiding portion 75 has a light emitting surface constituting portion 76 having a plate shape elongated in the longitudinal direction of the vehicle, and a light incident surface having a shape projecting upward from the light emitting surface constituting portion 76. And a configuration unit 77. The thickness of the light guide 75 (the length in the first direction orthogonal to the longitudinal direction of the accommodation space) is, for example, smaller toward the front of the vehicle, and the thickness Z2 of the middle portion in the longitudinal direction (see FIG. 10 and the thickness Z3 (see FIG. 14) of the end on the front side of the vehicle are set to a value smaller than the diameter Z1 of the light guide rod 50. In addition, although thickness Z 3 of the edge part of the vehicle front side of the light guide part 75 is set by about 1.5 mm, for example, it is not limited to this. The thickness Z3 of the end on the vehicle front side in the light guide 75 is an example of “the length in the first direction at the end on the other end side of the light guide”.

  As shown in FIGS. 4 and 6, the light incident surface configuration portion 77 has a long shape in the longitudinal direction of the vehicle, and the width thereof is set to a value smaller than the width of the light emission surface configuration portion 76. Further, as shown in FIG. 3, a groove 22E (second groove) extending in the longitudinal direction of the light guide 75 is formed in the bezel main body 22, and the light incident surface configuration 77 is shown in FIG. 10. Thus, the groove 22E is fitted. As shown in FIG. 8, the end face 77A on the vehicle rear side in the light incident surface configuration portion 77 is disposed to face the end face 51B on the vehicle front side in the light guide rod 50. Further, the end face 77A on the rear side of the vehicle is a curved surface that protrudes toward the end face 51B, and the protruding end is in contact with the end face 51B configured by the core material 51.

  As described above, the light emitted from the light emission surface 41A of the LED 41 is incident on the inside of the core material 51 from the end surface 51A (first light incident surface, light guide rod side light incident surface) of the light guide bar 50 After being guided by repeating total reflection in the inside, it is configured to be emitted to the outside from the entire surface of the outer peripheral surface 50A of the light guide rod 50 (side surface, first light emission surface of the light guide rod). Further, as shown in FIG. 9, a gap S <b> 1 in the vehicle interior and exterior direction is set between the wall 22 </ b> D of the bezel main body 22 and the upper end of the second board 13. The gap S1 has a shape extending in the longitudinal direction of the vehicle, and the light L1 (arrow in FIG. 9) from the light guide rod 50 passes through the cover portion 71 and the gap S1 and is emitted into the vehicle cabin (vehicle compartment) It is configured to be

  Furthermore, as shown in FIG. 8, part of the light incident from the end face 51A of the light guide bar 50 is incident on the end face 51B of the light guide bar 50 (the second light emitting surface, the other end face of the light guide bar) The light is emitted to the surface configuration unit 77 side. The emitted light L3 from the end surface 51B is incident on the inside of the light incident surface configuration section 77 from the end surface 77A (second light incident surface) on the vehicle rear side. The light incident on the inside of the light incident surface forming portion 77 is guided by repeating total reflection inside the light guiding portion 75, and then the light emitting surface 76A (the third light which is the lower surface of the light emitting surface forming portion 76 It is configured to be emitted from the exit surface). Further, light L2 emitted from the light emitting surface 76A (arrows in FIG. 10) passes through the gap S1 and is emitted into the vehicle compartment (vehicle interior).

  In addition, as described above, the bezel main body portion 22 has a substantially U-shape opening downward in a cross sectional view, and the light guide rod 50 and the light transmitting member 70 are accommodated therein. (See Fig. 9 and Fig. 10). In the bezel main body portion 22, a surface (inner surface of the bezel main body portion 22) facing the light guide rod 50 and the light transmitting member 70 may be a light reflecting surface (for example, plating, white painting, etc.). By covering the light guide bar 50 and the light transmission member 70 other than the lower surface (the light emission surface with respect to the vehicle interior) with the light reflection surface, the light emitted from the light guide rod 50 and the light transmission member 70 is The light can be reflected downward (as a result, the passenger compartment), and the light utilization efficiency can be improved.

  Next, an assembly structure of the bezel 21 and the light transmitting member 70 will be described. As shown in FIG. 3, mounting holes 23 for mounting the light transmitting member 70 are formed in a plurality of places in the bezel main body 22. Further, as shown in FIG. 4, mounting claws 72 are formed in the cover portion 71 of the light transmitting member 70 corresponding to the mounting holes 23. As shown in FIG. 13, the mounting claw 72 is a rectangle connected to the upper ends of the first upright wall 72A and the second upright wall 72B rising from the cover 71, and further, the first upright wall 72A and the second upright wall 72B. Wall portion 72D. On the other hand, as shown in FIG. 11, the mounting hole 23 has a rectangular first hole 23A slightly larger than the upper wall 72D of the mounting claw 72, and a second smaller than the first hole 23A. And a hole 23B. 11 and 12 are views of the mounting hole 23 and the mounting claw 72 as viewed from above, and FIG. 13 is a cross-sectional view of the mounting hole 23 and the mounting claw 72 as viewed from the side. Further, in FIGS. 11 and 12, the left side of the figure is the front side of the vehicle.

  When attaching the attachment claw 72 to the attachment hole 23, as shown in FIG. 12, after the upper wall portion 72D is inserted through the first hole portion 23A, for example, the bezel main body portion 22 is elongated relative to the cover portion 71. The sliding movement is made along the direction, and as shown in FIG. 11, the first upright wall 72A of the mounting claw 72 is fitted in the second hole 23B. As a result, as shown in FIG. 13, the upper wall portion 72 D is locked from above with respect to the hole edge portion 23 D of the mounting hole 23, and the mounting claw 72 is prevented from coming off the mounting hole 23.

  Further, as shown in FIG. 3, a through hole 24 is formed at an end of the bezel main body 22 on the front side of the vehicle. As shown in FIG. 14, an end portion 75 </ b> A on the vehicle front side of the light guide portion 75 is inserted into the through hole 24 so as to intersect the penetrating direction. Thus, the end 75 </ b> A of the light guide 75 is configured to be locked from above with respect to the hole edge of the through hole 24 in the bezel main body 22. 11 to 14 show only the bezel main body 22 and the light transmitting member 70.

  Next, the effects of the present embodiment will be described. According to the present embodiment, the light emitted from the LED 41 is incident on the light guide bar 50, and then part of the light is emitted from the outer circumferential surface 50A, and the other part of the light is incident on the light guide 75. The light that has entered the light guiding portion 75 is emitted from the light emitting surface 76A (third light emitting surface) of the light guiding portion 75. Therefore, the light from the LED 41 can be emitted from the light guiding bar 50 and the light guiding portion 75 respectively into the vehicle interior.

  Further, in the present embodiment, the length in the vertical direction of the accommodation space S2 (the length in the first direction orthogonal to the longitudinal direction) decreases as it goes from one end side to the other end side in the longitudinal direction. Here, since the thickness Z3 of the end on the front side of the vehicle is set to a value smaller than the diameter Z1 of the light guiding rod 50, the light guiding portion 75 has a smaller space than the light guiding rod 50. It becomes possible to accommodate. With such a configuration, the light guide rod 50 and the light guide portion 75 can be accommodated even in the case where the accommodation space S2 is a space that becomes smaller toward the other end side.

  That is, the light guiding rod 50 is disposed in a relatively large portion in the housing space S2 (a portion on the vehicle rear side in the present embodiment), and a relatively small portion in the housing space S2 (a portion on the vehicle front side in the present embodiment) The light guide portion 75 smaller than the light guide bar 50 is disposed in the device. In addition, since the light guide rod 50 includes the core material 51 and the covering material 56, it is relatively difficult to reduce the diameter Z1. On the other hand, since the light guide part 75 is comprised by the single light transmissive member, it is easy to make the plate thickness small, and can be accommodated in a smaller accommodation space.

  Further, since the light guide rod 50 is in the form of a cylinder having a uniform diameter over the entire length, light can be guided more uniformly as compared with the light guide section 75. As a result, it is possible to emit more uniform light into the vehicle compartment as compared to a light guide made of a plate-like light guide such as the light guide 75 over the entire length, and to enhance the design. Can. In addition, even when the light guide rod 50 having a uniform diameter is bent, the light guide performance is unlikely to deteriorate, so that the light guide rod 50 is also preferable in that respect. In particular, the surface shape of the interior material such as the door trim 10 is often three-dimensionally bent from the viewpoint of design and the like, and the light guide rod 50 is also often bent according to the surface shape. Is preferred.

  In addition, the light guide rod 50 includes a core 51 having a cylindrical shape that is long in the longitudinal direction of the accommodation space S2, and a covering 56 that covers the outer circumferential surface of the core 51. If the light guide rod 50 is set to have a uniform diameter over the entire length, it can be easily manufactured by making the diameter of the core material 51 and the thickness of the covering material 56 constant.

  Further, the end surface 77A of the light guide portion 75 is a curved surface that protrudes toward the end surface 51B of the light guide rod 50, and the protruding end is in contact with the end surface 51B configured by the core material 51. By bringing the end face 77A of the light guide 75 into contact with the end face 51B of the light guide bar 50, positioning of the two surfaces can be performed reliably. Further, when the end surface 77A is a curved surface protruding toward the end surface 51B and the protruding end is in contact with the end surface 51B of the core member 51, the end surface 77A abuts on the covering material 56 more reliably. can do. Thereby, the situation where external force acts on covering material 56 can be controlled, and exfoliation of covering material 56 can be controlled. In addition, when the end face 77A of the light guide portion 75, which is a light incident surface, is a curved surface projecting toward the end face 51B, the end face 77A can be provided with the function of a lens (convex lens) and enters the light guide portion 75. Light can be collected. This can further increase the light utilization efficiency. Note that the end surface 77A may be a concave curved surface that opens to the end surface 51B side, in which case light incident on the light guide portion 75 can be diffused.

  The light guide bar 50 further includes a cover 71 that covers the outer peripheral surface 50A of the light guide bar 50 and is made of a material that can transmit light, and the cover 71 is integrally provided with the light guide 75. By providing the cover 71 that covers the outer circumferential surface 50A of the light guide bar 50, the light guide bar 50 can be protected. Moreover, since the cover part 71 is comprised with the material which can permeate | transmit light, the situation which interrupts | blocks the emitted light from 50 A of outer peripheral surfaces of the light guide stick | rod 50 can be suppressed. Moreover, since the light guide part 75 and the cover part 71 are materials which can transmit light respectively, they can be integrally provided, and the number of parts can be reduced.

  A light guide rod 50 and a longitudinal bezel 21 holding the light guide portion 75, and the bezel 21 has a groove 22B which extends along the longitudinal direction of the light guide rod 50 and into which the light guide rod 50 is fitted; A groove 22E extending in the longitudinal direction of the light guide 75 and into which the light guide 75 is fitted is formed. By providing such a bezel 21, the light guide bar 50 and the light guide section 75 can be fixed more reliably.

Other Embodiments
The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The illumination device 20 exemplified in the above embodiment is not limited to a vehicle, and can be mounted on various vehicles.
(2) In the said embodiment, although the door trim 10 was illustrated as an interior material for vehicles provided with the illuminating device 20, it is not limited to this. As a vehicle interior material, a quarter trim, a deck side trim, etc. can be illustrated, for example. Moreover, the member to which the light guide 50 and LED41 are attached is not limited to the bezel 21, It can change suitably.
(3) In the said embodiment, although the core material 51 was made into acrylic resin and the thing whose covering material 56 is fluorine resin was illustrated, the material of the core material 51 and the covering material 56 is not limited to this.
(4) In the above embodiment, the housing space S2 in which the lighting apparatus 20 is housed is illustrated as being long in the vehicle longitudinal direction, and the vertical direction is exemplified as the first direction orthogonal to the longitudinal direction, but is not limited thereto . For example, the longitudinal direction of the accommodation space S2 may be along the vertical direction, and in this case, the first direction may be, for example, the vehicle longitudinal direction (an example of a direction orthogonal to the vertical direction).
(5) In the above embodiment, the rear end side of the vehicle is illustrated as one end side in the longitudinal direction of the accommodation space, and the front side of the vehicle is illustrated as the other end side in the longitudinal direction. That is, although the thing arranged in order of LED41, the light guide rod 50, and the light guide part 75 was illustrated in the said embodiment from the vehicle rear side, it is not limited to this. For example, the LEDs 41, the light guide bar 50, and the light guide 75 may be arranged in order from the front side of the vehicle.
(6) The thickness of the light guide 75 is not limited to the one exemplified in the above embodiment. The thickness of the light guide portion 75 may be smaller than the diameter of the light guide bar 50 at least at the end of the vehicle front side (the side far from the light guide bar 50).
(7) The light guide portion 75 and the cover portion 71 may be separate members, or may not be provided with the cover portion 71.

DESCRIPTION OF SYMBOLS 10 Door trim (vehicle interior material) 20 illumination device 21 vehicle illumination device 21 bezel (retaining member) 22B groove portion (first groove portion) 22E groove portion (second groove portion) 41 LED (Light source), 41A: light emitting surface (light emitting surface of light source) 50: light guiding rod, 50A: outer peripheral surface of light guiding rod (first light emitting surface of light guiding rod), 51: core material, 51A: End face of the light guide rod (first light incident surface) 51B: end surface of the light guide rod (second light exit surface) 56: coating material 71: cover portion 75: light guide portion (light guide plate) 76A: Light emitting surface (third light emitting surface), 77A: end surface (second light incident surface), B1: length in the vertical direction at the vehicle rear end of the housing space (length in the first direction), B2: housing space Length in the vertical direction (length in the first direction) at the front end of the vehicle, S2 ... accommodation space, Z1 ... diameter of light guide rod, Z3 ... end of vehicle front end Is (length in the first direction at the end of the other end side of the light guide plate)

Claims (5)

A vehicle lighting device housed in a longitudinal housing space provided in a vehicle interior material, comprising:
The accommodation space is a space whose length in the first direction orthogonal to the longitudinal direction decreases from one end side to the other end side of the longitudinal direction,
The vehicle lighting device is
A light source disposed at the one end side;
A flexible light guide bar disposed on the other end side with respect to the light source, having a long cylindrical shape in the longitudinal direction and having a uniform diameter over the entire length;
A longitudinal light guide plate disposed on the other end side with respect to the light guide rod and extending along the longitudinal direction;
The light guide bar is
A first light incident surface which is an end surface disposed opposite to the light emitting surface of the light source;
A first light emitting surface that is an outer peripheral surface that emits light incident from the first light incident surface toward a vehicle room;
And a second light emitting surface which is the other end surface for emitting the light incident from the first light incident surface to the light guide plate side,
In the light guide plate, the length in the first direction at least at the end on the other end side is set to a value smaller than the diameter of the light guide bar,
A second light incident surface disposed opposite to the second light emitting surface;
And a third light emitting surface for emitting the light incident from the second light incident surface toward the vehicle room. The light guide bar is
A cylindrical core material elongated in the longitudinal direction;
The covering device which covers the outer peripheral surface of the said core material, The illuminating device for vehicles of Claim 1 provided. The second light incident surface of the light guide plate is a curved surface that protrudes toward the second light output surface of the light guide bar,
The vehicle lighting device according to claim 2, wherein the second light emitting surface is configured to be in contact with the second light emitting surface configured by the core material at the protruding end. And a cover portion covering at least a part of the outer peripheral surface of the light guide rod and made of a material capable of transmitting light.
The said cover part is an illuminating device for vehicles of any one of the Claims 1-3 provided integrally with the said light-guide plate. The light guide rod and a longitudinal holding member for holding the light guide plate;
The holding member is
A first groove extending along a longitudinal direction of the light guide bar and in which the light guide bar is fitted;
The vehicle lighting device according to any one of claims 1 to 4, further comprising: a second groove portion extending along a longitudinal direction of the light guide plate and in which the light guide plate is fitted.

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