JP2022063640A - Structure for mounting illumination device on vehicular interior member - Google Patents

Abstract

To provide a structure for mounting an illumination device on a vehicular interior member, allowing a long light guide to be simply mounted on the vehicular interior member while inhibiting the long light guide from floating.SOLUTION: A light guide 33 is mounted on the rear face side of a standing wall 3B along a slit S by a clip 40 capable of being locked to a connection wall 12C, so that light emitted by an LED 31 is emitted through the slit S to the front face side of a door trim 1. The clip 40 includes: a beam part 43 which, while being engaged with the connection wall 12C, extends from the connection wall 12C in a crossing direction crossing the longer direction of the slit S; a cover part 41 which covers the light guide 33 from a side opposite to the slit S; and a connection part 42 which connects the beam part 43 with the cover part 41. The beam part 43 and the connection part 42 are configured so as to arrange the cover part 41 onto the standing wall 3B in such a way that the cover part 41 allows the light guide 33 to be in contact with the peripheral edge of the slit S.SELECTED DRAWING: Figure 5

Description

The techniques disclosed herein relate to the mounting structure of a luminaire to interior materials for vehicles.

A lighting device that emits light linearly may be attached to the interior material of a vehicle such as an automobile. For example, Patent Document 1 discloses an indoor lighting device including a light source and a linear light guide body that guides light emitted from the light source, and such a lighting device is a vehicle provided with an irradiation window. By attaching it to the back side of the interior material and irradiating the light from the irradiation window toward the vehicle interior side, it is possible to improve the visibility and convenience of the vehicle interior at night, etc., and to enhance the design of the vehicle interior. Can be done. In the technique disclosed in Patent Document 1, in order to fix the light guide body to the interior material at low cost, the mounting portion is integrally formed with the light guide body without using the fixing means.

Japanese Unexamined Patent Publication No. 2014-181006

By the way, the present inventors use a lighting device provided with a long light guide body longer than the conventional one, and guide the light emitted from one light source to a plurality of places by using this long light guide body. We are considering lighting the interior of the vehicle at multiple locations in the interior materials. In this case, the light guide body is curved on the back surface of the interior material for arrangement, but if the mounting portion is formed on the peripheral surface of the light guide body, directionality is created on the peripheral surface of the light guide body. There is a drawback that it becomes difficult to handle the light guide. Further, if the light guide body is directly attached to the irradiation window without using a transparent lens member, the amount of light emitted to the indoor side at the place where the light guide body floats from the interior material is reduced, and the irradiation unevenness in the indoor side is reduced. There was a problem that it was easy to occur.

The technique disclosed here is made in view of the above circumstances, and is a lighting device for an interior material for a vehicle that can be easily attached to the interior material for a vehicle by suppressing the floating of a long light guide body. It is intended to provide a mounting structure for.

The technique disclosed herein is a structure for attaching a lighting device to an interior material for a vehicle, wherein the lighting device includes a light source, a long light guide body capable of guiding light generated from the light source, and the like. The vehicle interior material is plate-shaped and includes a long long hole that communicates the front surface and the back surface, and a wall portion that stands up beside the long hole. By being attached to the back surface side of the vehicle interior material along the elongated hole by a clip that can be locked to the wall portion, the light emitted by the light source is transmitted to the front surface side of the vehicle interior material through the elongated hole. It is supposed to be released to the light source. Then, the clip is provided from the beam portion extending from the wall portion in the intersecting direction intersecting the longitudinal direction of the elongated hole in a state of being engaged with the wall portion, and from the side opposite to the elongated hole with respect to the light guide body. It has a covering portion to be covered, and a connecting portion connecting the beam portion and the covering portion. In the beam portion and the connecting portion, the covering portion abuts the light guide body on the peripheral edge of the elongated hole. It is provided with a configuration in which the covering portion is arranged with respect to the interior material for a vehicle so as to be allowed to do so.

According to the above configuration, the light guide body of the lighting device is attached to the back surface side of the interior material for a vehicle by a clip, and the covering portion of the clip abuts the light guide body to the peripheral edge of the elongated hole. As a result, for example, by simply locking the clip to the wall of the interior material for a vehicle, the light guide body of the lighting device can be positioned at an appropriate position with respect to the long hole, and the light guide body can be easily mounted on the vehicle. Can be attached to interior materials. In addition, it is possible to suppress the floating of the light guide body with respect to the interior material for a vehicle, and it is possible to suppress the occurrence of uneven irradiation.

In a preferred embodiment of the mounting structure disclosed herein, the clip is made of at least an elastic material capable of elastically flexing the beam portion, and the beam portion and the connecting portion are covered with the covering portion. The portion is provided with a configuration in which the covering portion is arranged with respect to the vehicle interior material so that the portion presses the light guide body against the peripheral edge of the elongated hole. According to the above configuration, since the beam portion of the clip can be elastically bent, the light guide body can be easily attached to the interior material for a vehicle, and the attachment workability is improved. At the same time, the light guide can be attached to the interior material for a vehicle in a state of being pressed against the peripheral edge of the elongated hole without applying an excessive load to the light guide. Thereby, for example, even when the vehicle vibrates due to traveling, the displacement of the light guide body with respect to the elongated hole can be suppressed. As a result, the amount of light of the lighting device radiated to the surface side of the interior material for the vehicle can be stably maintained.

In a preferred embodiment of the mounting structure disclosed herein, the clip is an extruded product of synthetic resin. According to the above configuration, a clip having a complicated shape can be manufactured easily and at low cost. Further, since the clip is made of a synthetic resin, it is also suitable in that it can be easily provided as having an appropriate bending characteristic.

In a preferred embodiment of the mounting structure disclosed herein, an elastic member that is elastically deformable is interposed between the covering portion and the light guide body. According to the above configuration, the elastic member is elastically deformed between the clip and the light guide body, so that the light guide body is pressed against the peripheral edge of the elongated hole by the clip, and the light guide body is placed on the back surface side of the interior material for a vehicle. Can be attached to. This makes it possible to suppress the displacement of the light guide body with respect to the elongated hole due to vibration or the like. Further, since the clip holds the light guide body via the elastic member that can be elastically deformed, the elastic member can absorb (eliminate) the variation in the dimensions and the position of the clip and the light guide body, and is more stable. The light guide can be attached to the interior material for vehicles.

In a preferred embodiment of the mounting structure disclosed herein, the elastic member has a light blocking effect against light emitted by the light source. Interior materials for vehicles are often a combination of a plurality of members to form one larger interior material. In such a case, a slight gap may be formed at the joint (connecting portion) between the members, but such a gap is usually designed to be invisible. However, when light is generated from the peripheral surface of the light guide in all directions, the light leaks to the surface side from the unintended joint of the vehicle interior material, and the joint is conspicuous as a defective part, or the vehicle interior is used. This will impair the optical design of the material as a whole. On the other hand, according to the above configuration, the light generated from the peripheral surface of the light guide body is blocked by the elastic member on the side opposite to the elongated hole. This makes it possible to prevent a situation in which light leaks to the light guide body on the side opposite to the elongated hole. As a result, a high-quality interior material for vehicles is realized, in which light is emitted only from an intended portion such as a long hole.

In a preferred embodiment of the mounting structure disclosed herein, the elastic member has an elongated shape that is longer than the longitudinal dimension of the elongated hole, and the light guide body is provided along the longitudinal direction and around the circumference. While covering in a part of the direction, the light guide body is fixed to the vehicle interior material at a position separated from the outside of the elastic member by two or more clips along the longitudinal direction. According to the above configuration, the light guide body can be attached to the interior material for a vehicle in a state where the elastic member prevents light emission in an unintended direction. Further, the light guide can be fixed to the vehicle interior material at a position separated by a clip. Therefore, when the light guide body is attached to the interior material for a vehicle, for example, the light guide body and the elastic member are supported by hand at a predetermined mounting position, and the light guide body and the elastic member are clipped on both sides of the light guide body and the elastic member for the vehicle. Can be fixed to interior materials. Further, when the long light guide body is arranged along the long hole, the light guide body can be easily arranged along the long hole without causing slack. As a result, a mounting structure of the lighting device for the interior material for a vehicle having good mounting workability is realized.

In a preferred embodiment of the mounting structure disclosed herein, the wall portion comprises an engaging hole and the beam portion comprises an engaging claw at an end opposite to the connecting portion. Then, the clip is engaged with the wall portion by inserting the engaging claw into the engaging hole. According to the above configuration, the clip can be easily engaged with the wall portion, and the light guide body can be easily attached to the interior material for a vehicle.

In a preferred embodiment of the mounting structure disclosed herein, the vehicle interior material has a pair of holding portions that are erected on the back surface side facing each other and whose tip end side extends toward the other side of each other. The light guide body is attached to the vehicle interior material by being sandwiched by the sandwiching portion in a state where a part of the light guide body is covered with a light-shielding cover. The light-shielding cover has a tubular shape with slits in the axial direction of the cylinder, and has a main body portion that covers the light guide in the circumferential direction and a pair of protrusions formed along the slits on both sides of the slits. The flange portion is provided, and a part of the light guide body is housed in the main body portion, and is arranged between the pair of the holding portions, and the pair of the flange portions are overlapped with each other. It is configured to be sandwiched by the tip end side of the sandwiching portion. According to the above configuration, a part of the light guide body can be easily attached to the interior material for a vehicle in a state of being shielded from light by a light shielding cover. As a result, when a light guide is arranged near the seams of each member in a vehicle interior material composed of a plurality of members, the light of the lighting device may leak to the indoor side from an unintended part such as the seams. Be prevented. Further, by covering the light guide body with the light-shielding cover, the side light emission of the light guide body is suppressed, and more light from the light source can be propagated to the tip side of the light guide body.

In a preferred embodiment of the mounting structure disclosed herein, the vehicle interior material has a communication hole that communicates the front surface and the back surface and emits light of the light guide body to the indoor side in addition to the elongated hole. The light guide body is arranged so as to connect the elongated hole and the communication hole on the back surface side of the vehicle interior material. According to the above configuration, it is possible to make a plurality of locations of the interior material for a vehicle emit light with one lighting device without increasing the number of light sources and light guides. In addition, the lighting device can illuminate a remote part of the interior material for a vehicle at low cost by combining a relatively expensive light source into one and making a relatively inexpensive light guide body long. It is said that. Further, the long light guide body can be preferably used in the present technique because it can be easily and without deviation at an appropriate position of the interior material for a vehicle by adopting the above clip.

In a preferred embodiment of the mounting structure disclosed herein, the vehicle interior material is a door trim, configured by assembling at least two plate-like members, as well as a door inside handle bezel, armrests and doors. The light guide is provided with a pocket, and the light guide is arranged at the door inside handle bezel, the armrest, the door pocket, and the boundary between the two assembled plate-shaped members. The technique disclosed herein can be fully exerted by applying it to a door trim having the above configuration. According to such a configuration, the door trim is provided at multiple locations of the door inside handle bezel, the armrest, the door pocket, and the boundary between the two plate-like members by a lighting device including one light source and one light guide. Can be suitably illuminated. This provides a low cost and simple lighting mounting structure.

According to the technique disclosed herein, it is possible to provide a structure for attaching a lighting device to an interior material for a vehicle, which can suppress the floating of a long light guide body and can be easily attached to the interior material for a vehicle. ..

A front view of a door trim that employs a lighting device mounting structure for a vehicle interior material according to an embodiment as viewed from the vehicle interior side. Rear view of the door trim in FIG. Front view of the lighting device in the state of being arranged in the door trim A perspective view of the main part of the door panel inside the door inside handle bezel as seen from the back. Cross-sectional view showing the mounting structure of the light guide body to the door trim according to the embodiment (cross-sectional view taken along the line AA of FIG. 2). An exploded perspective view of the clip, the elastic member, and the light guide in the mounting structure of FIG. An exploded cross-sectional view of the clip, the elastic member, and the light guide in the mounting structure of FIG. A perspective view showing another mounting structure of the light guide body to the door trim according to the embodiment. A perspective view of other main parts of the door panel inside the door inside handle bezel as seen from the back. A cross-sectional view showing another mounting structure of the light guide body to the door trim according to the embodiment (cross-sectional view taken along line BB in FIG. 9).

<< Embodiment >>
The attachment structure of the lighting device to the vehicle interior material disclosed herein will be described with reference to FIGS. 1 to 10 as appropriate. The reference numerals F, Rr, U, D, IN, and OUT shown in each figure are examples of the vehicle in the front-rear direction, the rear direction, the vertical direction, the upper direction, the lower direction, and the room in the inner and outer directions with respect to the vehicle room, respectively. It shows the inside and the outside. However, the above direction is only for convenience and should not be interpreted in a limited way.

<Door trim>
FIG. 1 is a schematic view illustrating the configuration of a door trim 1 (an example of an interior material for a vehicle) seen from the interior side of a vehicle. The door trim 1 is mainly composed of a plate-shaped trim board 2, and is fastened to the interior side of a metal door inner panel (not shown) by a fastening member such as a clip (not shown). It enhances the design and comfort of the room. The trim board 2 is made of, for example, a synthetic resin (thermoplastic resin) such as polypropylene, or, for example, a composite material in which a plant fiber (for example, kenaf) and a synthetic resin are mixed. May be. In the following description, the indoor side of the trim board 2 may be referred to as the "front side", and conversely, the outdoor side may be referred to as the "back side".

<Trim board>
As shown in FIG. 1, the door trim 1 is provided with parts such as a door inside handle bezel 3, an armrest 4, a door pocket 5, and a speaker grill 8, and the trim board 2 is roughly composed of these parts. It is configured by assembling a plurality of trim board members to each other in consideration of mountability and design. The trim board 2 of the present embodiment is mainly composed of an upper board 12, a lower board 13, an armrest board 14, and a pocket board 15. The front surface (surface) of the trim board 2 may be covered with a skin material made of natural leather, synthetic leather, cloth, or the like.

The upper board 12 constitutes the upper part of the trim board 2, and while being rounded, it projects toward the indoor side with respect to the door inner panel, and the door inside handle (FIG. A handle opening 12A is provided in a portion corresponding to (not shown). The handle opening 12A has a large opening so that the handle portion of the door inside handle attached to the door inner panel can be easily inserted into the indoor side when the trim board 2 is attached to the door inner panel. Therefore, the door inside handle bezel 3 is fitted into the handle opening 12A of the upper board 12 from the indoor side so that the door inner panel is not exposed indoors. The door inside handle bezel 3 is an example of an interior material for a vehicle in the present technology. A lower board 13 is assembled below the upper board 12.

An armrest board 14 is fastened above the front side of the lower board 13 from a substantially central portion in the front-rear direction to the rear. The armrest board 14 has a shape overhanging the interior side of the vehicle, and constitutes an armrest 4 used as an armrest for an occupant. In the armrest board 14, the upper surface 14A facing upward extends substantially horizontally from the surface of the trim board 2 (the surface facing the indoor side; the same applies hereinafter) toward the room, and extends to the front portion and the rear portion of the upper surface 14A. Is provided with an opening. A switch operation unit (not shown) for operating the opening and closing of the door window and an armrest pocket member (not shown) for accommodating small items close to each other are attached to the openings of the front part and the rear part, respectively. Has been done. Further, as a whole, the front portion of the armrest board 14 rises (backward tilts) toward the front, and the rear portion gradually rises (forward tilts) toward the rear, so that the occupant puts his / her arm on the armrest 4. It is designed so that you can reach the door inside handle smoothly from the rested state.

A door grip 7 is provided at the front end of the armrest 4. The door grip 7 is a portion for the occupant to grip when opening / closing the door or when the armrest 4 is armrested, and is located above or on the indoor side with respect to the upper surface 14A of the armrest 4 which is substantially horizontal toward the indoor side. It is formed with a curved surface so that it bulges round toward you.

The lower board 13 bulges inward toward the room at the bottom, and a pocket opening 5A is provided above the bulge. A pocket board 15 is fastened to the back side (outdoor side) of the bulging portion, and a door pocket 5 that opens upward is constructed between the lower board 13 and the pocket board 15.

<Lighting device>
For such a door trim 1, for example, the door inside handle bezel 3, the boundary line between the upper board 12 and the lower board 13, the front part of the armrest 4, and the door pocket 5 are provided with lighting for occupants in the room. In some cases, it is desired to improve the visibility of these parts or to improve the light decoration of the passenger compartment. Therefore, the door trim 1 of the present embodiment includes one lighting device 30 capable of illuminating the above-mentioned plurality of locations on the trim board 2.

As shown in FIG. 3, the lighting device 30 includes an LED 31 as a light source and a light guide body 33 capable of guiding light emitted from the LED 31. The LED 31 is housed in the LED housing case 32 in a state of being mounted on the LED board. Further, the LED 31 is connected to a power supply device such as a battery mounted on the vehicle via a control device (not shown).

The light guide 33 has a flexible, substantially circular cross section (rod shape), and as described above, the door inside handle bezel 3, the boundary between the upper board 12 and the lower board 13, and the front portion of the armrest 4. , And, so as to connect the door pocket 5, the back surface of the trim board 2 (the surface on the outdoor side; the same applies hereinafter) is curved in a zigzag shape. The end surface on one end side of the light guide 33 along the longitudinal direction is fixed to the LED housing case 32 in a state of being arranged so as to face the light emitting surface of the LED 31. The light guide 33 in the present embodiment is composed of a fiber-like core having high light transmission as an optical path and a clad layer covering the core on the peripheral surface, and the clad layer has a refractive index relative to the core. By using a low-grade material, the light introduced into the core is totally reflected at the interface with the clad layer and propagated in the longitudinal direction. Further, in the light guide body 33, the clad layer has a light transmitting property, and the core and the clad layer contain a diffusing material. With such a configuration, the light guide body 33 has a structure in which light leaks from the peripheral surface. , A so-called side-emitting type light guide. The material constituting the light guide 33 is not particularly limited. For example, the material constituting the core may be an acrylic resin, polycarbonate, silicone resin, or the like, and the material constituting the clad layer is a fluorine-containing resin. You can do it.

<Installation of lighting equipment>
The trim board 2 is provided with an irradiation window that communicates the front surface and the back surface of the trim board 2 at a position where the light emitted from the light guide 33 arranged on the back surface is radiated toward the room. .. In the trim board 2 of the present embodiment, the door inside handle bezel 3, the boundary line between the upper board 12 and the lower board 13, and the long slit S as an irradiation window in the front portion of the arm rest 4 (see, for example, FIG. 5). Are independently provided, and a round hole 13A (an example of a communication hole) as an irradiation window is formed above the door pocket 5. Hereinafter, the mounting structure of the lighting device 30 (light guide body 33) to the door trim 1 will be described by taking as an example the case where the light guide body 33 is fixed to the door inside handle bezel 3 and its surroundings.

First, the structure of the door inside handle bezel 3 and its surroundings will be described. As shown in FIGS. 4 and 5, the door inside handle bezel 3 is retracted in a box shape from the surface of the upper board 12 toward the outdoor side so that the occupant can easily grip the handle portion of the door inside handle. That is, the door inside handle bezel 3 has a front portion 3A that is substantially flush with the surface of the upper board 12, a back wall 3C that recedes to the outdoor side with respect to the front portion 3A, and a front surface that rises from the peripheral portion of the back wall 3C. A continuous vertical wall 3B is provided in the portion 3A. As shown in FIG. 5, a slit S (an example of a long hole) extending in the front-rear direction is formed on the vertical wall 3B arranged above the door inside handle bezel 3. Further, the standing wall 3B arranged in front of and behind the door inside handle bezel 3 is provided with locking claws (not shown) protruding from the standing wall 3B toward the front and the rear, respectively. The vertical wall 3B arranged downward is provided with a locking claw 3E (see FIG. 4) that projects downward from the vertical wall 3B.

On the other hand, at the peripheral edge of the handle opening 12A of the upper board 12, as shown in FIG. 5, a rib wall 12B extending toward the outdoor side is provided along the handle opening 12A. In the upper board 12 of this example, above the handle opening 12A, a pair of rib walls 12B facing each other are provided above the opening end and slightly above the opening end. These rib walls 12B are connected by a connecting wall 12C arranged in the vertical direction on the outdoor side, and form a hollow box-shaped reinforcing structure 12D as a whole.

Below the handle opening 12A of the upper board 12, the locking receiving portion 12F that receives the locking claw 3E of the door inside handle bezel 3 is formed so as to rise upward from the rib wall 12B. The rib wall 12B, the connecting wall 12C, and the locking receiving portion 12F are integrally formed with a synthetic resin at the peripheral edge portion of the handle opening portion 12A. Then, by fitting the door inside handle bezel 3 into the handle opening 12A of the upper board 12 from the indoor side, the locking claws (not shown) and the locking claws 3E of the door inside handle bezel 3 are formed. , The door inside handle bezel 3 is fixed to the upper board 12 by being locked to the rib wall 12B and the locking receiving portion 12F of the upper board 12, respectively. As a result, at the peripheral edge of the door inside handle bezel 3, the connecting wall 12C of the upper board 12 is arranged beside the slit S so as to stand up along the slit S and with respect to the standing wall 3B. It will be. That is, the connecting wall 12C is an example of the wall portion in the present invention. In the connecting wall 12C, engagement holes 12E for locking the clip 40, which will be described later, are formed through one at a position corresponding to the front and the rear of the slit S.

<Near the irradiation window>
When the light guide body 33 is arranged along the slit S, as shown in FIGS. 5 to 7, the light guide body 33 is attached to the back surface side of the door trim 1 by using the clip 40 and the elastic member 45.

The elastic member 45 is a long member having a substantially cylindrical shape that covers a part of the peripheral surface of the light guide body 33 along the longitudinal direction. More specifically, the elastic member 45 has, for example, an arc surface portion 46 having a curvature corresponding to the peripheral surface of the light guide body 33, and projects so as to bend outward in the radial direction at both ends of the arc surface portion 46 in the circumferential direction. It has a folding portion 47. The lengthwise dimension (dimension along the cylindrical axis direction) of the elastic member 45 is larger than the lengthwise dimension of the slit S. Further, in the elastic member 45 of this example, the curvature of the arc surface portion 46 is slightly smaller than the curvature of the peripheral surface of the light guide body 33, and when the elastic member 45 is put on the light guide body 33, the elastic member 45 has an arc surface portion. It is configured so that the light guide body 33 can be covered in a range exceeding 180 degrees (for example, about 225 degrees) in the circumferential direction with the curvature of 46 expanded. The elastic member 45 is made of a flexible and elastically deformable material such as a synthetic resin (including elastomer and rubber), and is formed by, for example, extrusion molding. Although not limited to this, it is preferable that the elastic member 45 exhibits a color having a high light-shielding property (including light reflectivity) with respect to the light emitted by the LED 31. Examples of such colors include black, white, gray, and metallic colors. In this case, the elastic member 45 functions as a light-shielding cover for the light guide body 33.

The clip 40 is a member for pressing the light guide body 33 against the slit S formed in the vertical wall 3B of the door inside handle bezel 3, and has a covering portion 41, a connecting portion 42, and a beam portion 43. ing. The covering portion 41 is a portion that covers the light guide body 33 in the circumferential direction from the side opposite to the slit S, and the covering portion 41 of this example is a light guide body 33 in a state of being interposed through the elastic member 45 described above. It is formed to cover the. The covering portion 41 has a substantially cylindrical shape having an arc surface having a curvature corresponding to the peripheral surface of the elastic member 45 in a state where the light guide body 33 is covered with the elastic member 45. The dimension of the covering portion 41 along the tubular axis direction is set to be sufficiently shorter than the dimension in the longitudinal direction of the slit S. The connecting portion 42 is a plate-shaped portion that connects the covering portion 41 and the beam portion 43, and the plate surface is along the cylindrical axis of the covering portion 41 and is in the direction of the radius of curvature with respect to the covering portion 41. It is erected toward the outside. The beam portion 43 is provided so as to extend from the connecting portion 42 in the crossing direction intersecting the cylindrical axis of the covering portion 41. The beam portion 43 of this example includes two plate pieces 43A and 43B, and the respective plate pieces 43A and 43B are perpendicular to the plate surface of the connecting portion 42 in the direction of the radius of curvature of the covering portion 41. Are arranged so as to be separated from each other. At the tip portions of the pair of plate pieces 43A and 43B in the extending direction, engaging claws 43a and 43b having a substantially triangular cross-sectional shape are provided on the surfaces opposite to the facing surfaces thereof. The clip 40 is configured such that at least the beam portion 43 is elastically flexed and deformable, and is formed by, for example, extrusion molding of a synthetic resin (including elastomer and rubber).

In the clip 40, the curvature of the covering portion 41 of this example is slightly smaller than the curvature of the peripheral surface of the elastic member 45 in the state where the elastic member 45 is covered with the light guide body 33, and the light guide body 33 and the elastic member 45. When the covering portion 41 is covered with the covering portion 41, the covering portion 41 is configured to be able to cover the light guide body 33 and the elastic member 45 in a range exceeding 180 degrees in the circumferential direction in a state where the curvature thereof is expanded. There is. Further, the circumferential dimension of the covering portion 41 is designed to be the same as or slightly smaller than the circumferential dimension of the arcuate surface portion 46 of the elastic member 45, and is elastic when the covering portion 41 is put on the elastic member 45. The covering portion 41 is accommodated between the folded portions 47 at both ends of the member 45 in the circumferential direction.

When attaching the light guide body 33 to the back surface side of the door inside handle bezel 3, first, the light guide body 33 is covered with the elastic member 45, and the exposed portion between the folded portions 47 of the elastic member 45 of the light guide body 33 is covered. It is brought into contact with the slit S of the standing wall 3B (more specifically, the peripheral edges on both sides of the slit S). At this time, the arrangement of the elastic member 45 in the longitudinal direction is adjusted so that the elastic member 45 covers the slit S from above in the longitudinal direction. Then, on the side of the engagement hole 12E of the upper board 12, the covering portion 41 of the clip 40 is put on the elastic member 45 from the outside in the radial direction, and the tip of the beam portion 43 of the clip 40 is inserted into the engagement hole 12E. As a result, the engaging claws 43a and 43b at the tip of the beam portion 43 are engaged with the peripheral edge portion of the engaging hole 12E, and the clip 40 is in a state where the light guide body 33 is in contact with the slit S of the vertical wall 3B. It is fixed to 12. As a result, when the LED 31 of the lighting device 30 emits light, the light is emitted from the side surface of the light guide body 33 and radiated into the vehicle interior through the slit S. Here, the dimension between the covering portion 41 and the beam portion 43 in the connecting portion 42 is designed to press the light guide body 33 against the vertical wall 3B while the clip 40 is fixed to the upper board 12. There is. As a result, the floating of the light guide body 33 with respect to the slit S (standing wall 3B) is suppressed, and uneven irradiation from the slit S when the door trim 1 is viewed from the vehicle interior is suppressed. The light guide body 33 is fixed to the door inside handle bezel 3 of this example by two clips 40 at two places.

<Shading part>
On the other hand, when one long light guide body 33 is arranged at a plurality of places of the door trim 1, it is not desirable that the light emitted from the light guide body 33 leaks to the indoor side at an unintended portion of the door trim 1. Therefore, in a place where the light emitted from the light guide body 33 may leak to the indoor side, the light guide body 33 is covered with the light shielding cover 50 as shown in FIG. 8, and the back surface of the trim board 2 is covered. Attached to the side.

The light-shielding cover 50 is made of a material such as a flexible synthetic resin (including elastomer and rubber), and includes a main body portion 51 and a pair of flange portions 52 as shown in FIG. There is. The main body 51 has a substantially cylindrical shape such that a slit 51A is provided along the cylindrical axis direction of the cylindrical member, and the light guide body 33 is all around the circumferential direction in a part of the longitudinal direction of the light guide body 33. It is configured to cover all over. The pair of flange portions 52 are formed so as to protrude outward in the radial direction along the slit 51A at both ends of the main body portion 51 in the circumferential direction, in other words, on both sides of the slit 51A. The pair of flange portions 52 of this example are arranged slightly apart from each other in the circumferential direction of the main body portion 51. One flange portion 52 is arranged at a position separated from one end of the main body portion 51 in the circumferential direction by a predetermined dimension t, and the other flange portion 52 is arranged at one end of the main body portion 51 in the circumferential direction. , It is provided with an extension 53 extending toward one of the flanges 52 at its protruding end. Since the light-shielding cover 50 is made of a flexible material, the pair of flange portions 52 can be opened in the direction away from each other at the slit 51A position, but the main body portion 51 has a cylindrical shape in the free state. At the same time as closing, the extending portion 53 abuts on the tip end side of one of the flange portions 52. As a result, the light guide body 33 can be easily accommodated in the cylindrical light-shielding cover 50 in the inserted state, and light leakage from the slit 51A can be reliably prevented. Such a light-shielding cover 50 is formed by, for example, extrusion molding, and the dimensions in the longitudinal direction can be appropriately adjusted according to the dimensions for which the light guide body 33 is desired to be light-shielded.

As shown in FIG. 9, the back surface of the trim board 2 is provided with a pair of holding portions 18 for accommodating and fixing the light-shielding cover 50 in between. The sandwiching portion 18 includes a wall portion 18A that is erected so as to face each other, and a hook portion 18B that extends toward the other side of the wall portion 18A on the tip end side. Although the pair of wall portions 18A are separated by a dimension larger than the diameter of the main body portion 51 of the light-shielding cover 50 at the joint portion with the trim board 2 (base end portion), the separation distance becomes smaller toward the tip side. It is inclined like. The hook portion 18B is arranged so that the angle formed with the wall portion 18A is an acute angle. Such a holding portion 18 is made of a synthetic resin such as polyethylene or polypropylene, and is integrally formed with the trim board 2 by injection molding or the like.

When attaching the light guide body 33 to the back surface side, first, the light-shielding cover 50 is opened at the position of the slit 51A to accommodate the light guide body 33 in the main body 51. After that, the main body 51 is closed (contacted) in a cylindrical shape in a free state, so that the entire circumference of the light guide 33 is covered by the light-shielding cover 50. Further, the pair of flange portions 52 abut on the tip end side of the flange portion 52 facing the extending portion 53 on the outer side in the radial direction from the main body portion 51 in the free state. As a result, the outer side of the slit 51A in the radial direction is covered with the extending portion 53, and light is prevented from leaking to the outside from the light guide body 33 through the slit 51A.

The light guide body 33 covered with the light-shielding cover 50 is inserted from the side of the main body 51 (the side opposite to the flange 52) and between the pair of holding portions 18 from the tip end side of the holding portion 18. Then, the main body portion 51 is accommodated between the sandwiching portions 18, so that the pair of flange portions 52 are sandwiched by the pair of sandwiching portions 18. At this time, the shape of the hook portion 18B is designed so as to abut in the vicinity of the boundary between the main body portion 51 and the flange portion 52. This prevents the light guide 33 covered with the light-shielding cover 50 from being displaced in the direction away from the back surface of the trim board 2.

In the mounting structure of the lighting device 30 for the door trim 1 of the above embodiment, the lighting device 30 includes an LED 31 and a long light guide body 33 capable of guiding the light generated from the LED 31. The door trim 1 (trim board 2) has a plate shape, and has a long slit S that communicates the front surface and the back surface of the standing wall 3B of the door inside handle bezel 3, and a connecting wall 12C of the upper board 12 that stands up beside the slit S. And have. The light guide 33 is attached to the back surface side of the standing wall 3B along the slit S by a clip 40 that can be locked to the connecting wall 12C, so that the light emitted by the LED 31 is emitted to the front surface side of the door trim 1 through the slit S. It is said to be composed. The clip 40 covers the beam portion 43 extending from the connecting wall 12C in the intersecting direction intersecting the longitudinal direction of the slit S and the light guide body 33 from the side opposite to the slit S in a state of being engaged with the connecting wall 12C. The beam portion 41 has a connecting portion 42 that connects the beam portion 43 and the covering portion 41, and the covering portion 41 abuts the light guide body 33 on the peripheral edge of the slit S in the beam portion 43 and the connecting portion 42. As described above, the covering portion 41 is arranged with respect to the vertical wall 3B.

According to the above configuration, the light guide body 33 of the lighting device 30 is attached to the back surface side of the door trim 1 by the clip 40, and the covering portion 41 of the clip 40 brings the light guide body 33 into contact with the peripheral edge of the slit S. Has been done. Thereby, for example, by simply locking the clip 40 to the connecting wall 12C of the upper board 12, the light guide body 33 of the lighting device 30 is positioned at an appropriate position with respect to the slit S, and the light guide body 33 is positioned. Can be easily attached to the door trim 1. Further, at this time, since the light guide body 33 is suppressed from floating with respect to the door trim 1, it is possible to suppress the occurrence of uneven irradiation of the light radiated into the room through the slit S.

In the above embodiment, the clip 40 is made of an elastic material capable of elastically bending at least the beam portion 43, and in the beam portion 43 and the connecting portion 42, the covering portion 41 slits the light guide body 33 in the light guide body 33. The covering portion 41 is arranged with respect to the vertical wall 3B so as to press against the peripheral edge of the wall. According to such a configuration, since the beam portion 43 of the clip 40 can be elastically bent, when the light guide body 33 is attached, the light guide body 33 is pressed against the peripheral edge of the slit S while the back surface of the standing wall 3B is attached. The light guide 33 can be attached to the side. As a result, even when the vehicle vibrates due to traveling, the displacement of the light guide body 33 with respect to the slit S can be suppressed. As a result, the amount of light emitted from the lighting device 30 radiated to the surface side of the door trim 1 can be stably maintained. Further, the bending of the beam portion 43 facilitates the attachment of the light guide body 33 to the door trim 1, which is advantageous in that the attachment workability is improved.

In the above embodiment, the clip 40 is an extruded product of synthetic resin. According to such a configuration, the clip 40 having a complicated shape can be manufactured easily and at low cost. Further, since the clip 40 is made of a synthetic resin, it is also suitable in that it can be easily provided as having an appropriate bending characteristic.

In the above embodiment, an elastic member 45 that can be elastically deformed is interposed between the covering portion 41 and the light guide body 33. According to the above configuration, the elastic member 45 is elastically deformed between the clip 40 and the light guide body 33, so that the light guide body 33 is pressed against the peripheral edge of the slit S by the clip 40, in other words, an elastic reaction. The light guide body 33 can be attached to the back surface side of the door trim 1 with the internal force applied. As a result, it is possible to suitably suppress the displacement of the light guide body 33 in the direction away from the slit S due to vibration or the like. Further, since the clip 40 holds the light guide body 33 via the elastic member 45 that can be elastically deformed, the variation in the dimensions and the position of the clip 40 and the light guide body 33 are absorbed (resolved) by the deformation of the elastic member 45. )can do. Thereby, the light guide body 33 can be attached to the door trim 1 more stably.

In the above embodiment, the elastic member 45 has a light-shielding property against the light emitted by the LED 31. In the door trim 1, a plurality of trim boards are often combined to form one larger trim board 2. In such a case, a slight gap may occur in the joint (connecting portion) between the members, the through hole for fastening, or the like, but such a gap is usually designed to be invisible. However, if light is generated in all directions from the peripheral surface of the light guide 33 on the back surface side of the trim board 2, light leaks to the front surface side from an unintended joint of the trim board 2, and the joint is a defective portion. This will be noticeable, and the overall optical design of the door trim 1 will be impaired. On the other hand, according to the above configuration, the light generated from the peripheral surface of the light guide body 33 is blocked by the elastic member 45 on the side opposite to the slit S. As a result, it is possible to suppress a situation in which light leaks to the light guide body 33 on the side opposite to the slit S. As a result, a high-quality door trim 1 is realized in which light is emitted to the front side only from the intended portion such as the slit S.

In the above embodiment, the elastic member 45 has a long shape longer than the dimension in the longitudinal direction of the slit S, covers the light guide body 33 along the longitudinal direction and partially in the circumferential direction, and guides the light guide. The body 33 is fixed to the door trim 1 at a position separated from the outside of the elastic member 45 along the longitudinal direction by two or more clips 40. According to the above configuration, the light guide body 33 is attached to the door trim 1 in a state where light emission in an unintended direction is prevented by the elastic member 45. Further, the light guide body 33 may be fixed to the door trim 1 at a position separated by the clip 40. Therefore, when the light guide body 33 is attached to the door trim 1, for example, the light guide body 33 and the elastic member 45 are clipped on both sides of the light guide body 33 and the elastic member 45 while being manually supported at a predetermined attachment position. It can be fixed to the door trim 1 by 40. Further, when the long light guide body 33 is arranged along the slit S, the light guide body 33 can be easily arranged along the slit S without causing slack. As a result, a mounting structure of the lighting device for the interior material for a vehicle having good mounting workability is realized.

In the above embodiment, the connecting wall 12C (wall portion) of the upper board 12 is provided with an engaging hole 12E, and the beam portion 43 is provided with engaging claws 43a and 43b at the end opposite to the connecting portion 42 and is clipped. 40 has a configuration in which the engaging claws 43a and 43b are inserted into the engaging holes 12E so as to be engaged with the connecting wall 12C. According to the above configuration, the clip 40 can be easily engaged with the connecting wall 12C of the upper board 12, and the light guide body 33 can be easily attached to the door trim 1.

In the above embodiment, the door trim 1 is provided with a pair of holding portions 18 which are erected facing each other on the back surface side and whose tip end side extends toward the other side of each other, and the light guide body 33 is one of them. The portion is attached to the door trim 1 by being sandwiched by the sandwiching portion 18 in a state where the portion is covered by the light-shielding cover 50. It is provided with a main body portion 51 that covers the surface in the circumferential direction, and a pair of flange portions 52 that are formed so as to project along the slit 51A on both sides of the slit 51A. Then, in a state where a part of the light guide body 33 is housed in the main body portion 51, the light guide body 33 is arranged between the pair of holding portions 18, and the tips of the pair of holding portions 18 are overlapped with the pair of flange portions 52. It is configured to be sandwiched by the sides. According to the above configuration, a part of the light guide body 33 can be easily attached to the door trim 1 in a state of being shielded from light by the light shielding cover 50. As a result, when the light guide 33 is arranged near the seam of each member in the door trim 1 composed of a plurality of members, the light of the lighting device 30 may leak to the indoor side from an unintended part such as the seam. It is suppressed. Further, by covering the light guide body 33 with the light shielding cover 50, the side light emission of the light guide body 33 is suppressed, and the light from the LED 31 can be propagated more to the tip side of the light guide body 33.

In the above embodiment, the door trim 1 includes, in addition to the slit S, a round hole 13A that communicates the front surface and the back surface, and the lighting device 30 includes one LED 31 and one light guide 33. The light guide body 33 is arranged so as to connect the slit S and the round hole 13A on the back surface side of the door trim 1. According to such a configuration, it is possible to make a plurality of places of the door trim 1 emit light by one lighting device 30 without increasing the number of LEDs 31 and the light guide body 33. Further, the lighting device 30 can illuminate a remote portion of the door trim 1 at low cost by combining the relatively expensive LED 31 into one and making the relatively inexpensive light guide 33 long. It is said that. Further, since the long light guide body 33 can be easily and without deviation at an appropriate position of the door trim 1 by adopting the clip 40, it can be preferably used in the present technique.

In the above embodiment, the door trim 1 is configured by assembling at least the upper board 12 and the lower board 13, and includes a door inside handle bezel 3, an armrest 4, and a door pocket 5. The light body 33 is arranged at the door inside handle bezel 3, the armrest 4, the door pocket 5, and the boundary between the assembled upper board 12 and the lower board 13. The technique disclosed herein can be fully exerted by applying it to the door trim 1 having such a configuration. According to such a configuration, the door trim 1 can suitably illuminate the above-mentioned plurality of locations by the lighting device 30 including one LED 31 and one light guide 33. This provides a low cost lighting mounting structure.

<Other embodiments>
The techniques disclosed herein are not limited to those disclosed in the above embodiments, and for example, the following aspects are also included in the technical scope disclosed herein. In addition, the techniques disclosed herein can be implemented in various modified embodiments without departing from their essence.

(1) In the lighting device of the above embodiment, the shapes, arrangements, and configurations of the light guide and the light source can be appropriately changed. For example, the cross-sectional shape of the light guide is not limited to a circle, and may be a polygon, an ellipse, or the like, and the light guide mechanism of the light guide may have a different configuration. Further, the arrangement of the light guide is not limited to the above embodiment, and may be arranged at another place such as the peripheral edge of the speaker grill 8.
(2) In the above embodiment, it is exemplified that the irradiation window is provided at the boundary between the upper board 12 and the lower board 13, but for example, in the vicinity of the lower end of the upper board 12, a long slit shape is formed along the boundary with the lower board 13. The irradiation window may be formed through the irradiation window.

(3) In the above embodiment, the upper board 12 is provided with the reinforcing structure 12D, the connecting wall 12C in the reinforcing structure 12D has a plate shape, and the connecting wall 12C (wall portion) stands up against the standing wall 3B. Although disclosed, the configuration of the wall portion provided on the trim board 2 is not limited to this. For example, the wall portion in the present technique may be directly erected on the vertical wall 3B arranged above the door inside handle bezel 3.
(4) In the above embodiment, the method of arranging the light guide body 33 covered with the elastic member 45 along the slit S is not described in detail. Although not specifically shown here, for example, the folded portion 47 of the elastic member 45 arranged on the side of the connecting wall 12C (wall portion) is inserted and fixed to the back surface of the standing wall 3B of the door inside handle bezel 3. A fixing piece (not shown) for the purpose may be provided between the connecting wall 12C (wall portion) and the slit S. According to this, the workability when clipping the light guide body 33 and the elastic member 45 becomes even easier.
(5) In the above embodiment, the clip 40 is attached to the light guide 33 via the elastic member 45, but the use of the elastic member 45 is not essential, and the clip 40 is directly attached to the light guide 33. May be good. In this case, the curvature of the covering portion 41 of the clip 40 may be designed to be as close as or slightly smaller than the curvature of the light guide body 33 so as to be in close contact with the peripheral surface of the light guide body 33.

(6) In the above embodiment, only one lighting device 30 is provided in one door trim 1, but as long as the lighting devices 30 provided in the door trim 1 exhibit lighting functions in a plurality of places, the door trim 1 may be provided. A lighting device other than the lighting device 30 may be provided.
(7) In the above embodiment, the door trim 1 which is an interior material of a vehicle door is exemplified as an interior material for a vehicle, but the interior material to which the lighting device 30 is attached is not limited to this. For example, the vehicle may be a train or amusement vehicle as a ground vehicle, an autonomous driving vehicle, an airplane or helicopter as a flight vehicle, a ship or a submersible as a marine or underwater vehicle, or the like. Further, the interior material may be one or more of roof lining, side trim, instrument panel, pillar garnish and the like.

1: Door trim (interior material for vehicles), 2 ... Trim board, 3 ... Door inside handle bezel, 3B ... Standing wall, 12 ... Upper board, 12A ... Handle opening, 12B ... Rib wall, 12C ... Connecting wall (wall part) , 12E ... Engagement hole, 18 ... Holding part, 18A ... Wall part, 18B ... Hook part, 30 ... Lighting device, 31 ... LED (light source), 33 ... Light guide body, 40 ... Clip, 41 ... Covering part, 42 ... connecting part, 43 ... beam part, 45 ... elastic member, 50 ... light-shielding cover

Claims (10)

It is a mounting structure of a lighting device for interior materials for vehicles.
The lighting device includes a light source and a long light guide body capable of guiding light generated from the light source.
The vehicle interior material has a plate shape and includes a long long hole that communicates the front surface and the back surface, and a wall portion that stands up beside the long hole.
The light guide is attached to the back surface side of the vehicle interior material along the elongated hole by a clip that can be locked to the wall portion, so that the light emitted by the light source is transmitted to the vehicle through the elongated hole. It is configured to be discharged to the surface side of the interior material,
The clip is
A beam portion extending from the wall portion in the intersecting direction intersecting the longitudinal direction of the elongated hole in a state of being engaged with the wall portion, and a beam portion.
A covering portion that covers the light guide from the side opposite to the elongated hole,
It has a connecting portion that connects the beam portion and the covering portion, and has a connecting portion.
The beam portion and the connecting portion have a configuration in which the covering portion is arranged with respect to the interior material for the vehicle so that the covering portion abuts the light guide body on the peripheral edge of the elongated hole. Mounting structure of lighting equipment for interior materials. The clip is made of an elastic material capable of elastically bending at least the beam portion.
The beam portion and the connecting portion have a configuration in which the covering portion is arranged with respect to the vehicle interior material so that the covering portion presses the light guide body against the peripheral edge of the elongated hole. The mounting structure of the lighting device for the interior material for a vehicle according to 1. The clip is a structure for attaching a lighting device to an interior material for a vehicle according to claim 1 or 2, which is an extruded product of synthetic resin. The mounting structure of a lighting device for an interior material for a vehicle according to any one of claims 1 to 3, wherein an elastic member that can be elastically deformed is interposed between the covering portion and the light guide body. The mounting structure of a lighting device for an interior material for a vehicle according to claim 4, wherein the elastic member has a light-shielding property against light emitted by the light source. The elastic member has an elongated shape longer than the longitudinal dimension of the elongated hole, and covers the light guide body along the longitudinal direction and in a part in the circumferential direction.
The fourth or fifth aspect of the present invention, wherein the light guide body is fixed to the vehicle interior material at a position separated from the outside of the elastic member by two or more clips along the longitudinal direction. Mounting structure of lighting equipment for interior materials for vehicles. The wall portion has an engaging hole and has an engaging hole.
The beam portion is provided with an engaging claw at an end opposite to the connecting portion.
The lighting device is attached to the vehicle interior material according to any one of claims 1 to 6, wherein the clip is engaged with the wall portion by inserting the engaging claw into the engaging hole. Construction. The vehicle interior material is provided with a pair of holding portions on the back surface side, which are erected facing each other and whose tip end side extends toward the other side of each other.
The light guide body is attached to the vehicle interior material by being sandwiched by the sandwiching portion in a state where a part thereof is covered with a light-shielding cover.
The light-shielding cover is
A main body that has a tubular shape with slits in the axial direction and covers the light guide in the circumferential direction.
A pair of flange portions formed so as to project along the slit on both sides of the slit are provided.
A part of the light guide body is housed in the main body portion, and the light guide body is arranged between the pair of holding portions, and the pair of flange portions are overlapped with each other by the tip end side of the pair of holding portions. The mounting structure of a lighting device for an interior material for a vehicle according to any one of claims 1 to 7, which is configured to be sandwiched. In addition to the elongated holes, the vehicle interior material has a communication hole that communicates the front surface and the back surface and emits the light of the light guide body to the indoor side.
The vehicle interior material according to any one of claims 1 to 8, wherein the light guide is arranged so as to connect the elongated hole and the communication hole on the back surface side of the vehicle interior material. Lighting device mounting structure. The vehicle interior material is a door trim, which is composed of assembling at least two plate-shaped members, and also includes a door inside handle bezel, an armrest, and a door pocket.
One of claims 1 to 9, wherein the light guide is arranged on the door inside handle bezel, the armrest, the door pocket, and the boundary between the two assembled plate-shaped members. The mounting structure of the lighting device for the interior materials for vehicles described in the section.

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