WO2017145388A1 - Vehicle interior component and light guide plate - Google Patents

Abstract

The purpose of the present invention is to provide a vehicle interior component wherein excellent visual appearance is provided by evenly illuminating a cloth material. The vehicle interior component (10) according to the present invention is equipped with a lighting member (20) that emits light and an interior member (30) that has a translucent region (30a) and a non-translucent region (30b). The lighting member (20) has a light source (21) that produces light and a light guide plate (22) that causes the light entering a light inputting surface to diffusely reflect internally, and emerge from a light outputting surface, thereby irradiating the translucent region (30a) of the interior member (30). The translucent region (30a) of the interior member (30) is formed with a translucent core material (31) and a cloth material (32) provided on the surface of the core material (31).

Description

Vehicle interior parts and light guide plate

The present invention relates to a vehicle interior part and a light guide plate.

Conventionally, various structures have been adopted as interior parts for vehicles using lighting devices.

For example, a vehicle lighting device including a main grain having a thickness of 0.1 to 0.3 mm, an LED light source, and a light guide plate, and a transparent sheet and a light guide plate are disposed on the back side of the main grain, There exists what has arrange | positioned the LED light source on the back surface or side surface of a light-guide plate (refer patent document 1).

Further, there is a vehicle lighting device including a main grain and an EL light source, in which an EL light source layer, an adhesive layer, a main grain layer, and a clear layer are sequentially arranged on a base material (Patent Document 2). reference).

These illuminating devices are transmitted illuminating to raise the grain pattern rather than illuminating the object, and the interior parts for vehicles using these illuminating devices are designed when the occupant looks at the interior parts. The main purpose is to produce sexuality (illumination).

Further, there is a vehicular illumination device that includes an LED light source and an optical fiber, and illuminates a plurality of locations by causing light from the LED light source to be incident on one end of the optical fiber and emitted from the other end (see Patent Document 3). ), This lighting device is used as direct illumination or indirect illumination.

JP 2002-205500 A JP 2005-205669 A JP 2005-0119154 A

By the way, cloth materials such as woven fabrics and knitted fabrics may be used for interior parts for vehicles, for example, door trims in addition to the above-mentioned main grain, and the trim body material, the main grain, and the cross material are appropriately used. Some of them are arranged to produce a design (decoration). Further, the door trim has a flat portion, but there are many uneven portions or curved portions, and the flat lighting device shown in Patent Documents 1 and 2 cannot be adapted to these.

On the other hand, diversification of design (decoration) is also demanded, and lighting devices according to the shape and material (texture) of various parts of the vehicle interior parts are required.

Therefore, the present invention has been made in view of the above-described problems, and an object of the present invention is to provide an interior part for a vehicle excellent in design by making the cloth material shine evenly. Moreover, it is providing the light-guide plate which irradiates light uniformly to a cloth | cross material.

The present invention has been proposed in order to achieve the above object, and (1) an interior component for a vehicle according to a first aspect of the present invention includes an illumination member that emits light, a translucent region, and a non-translucent region. The illumination member includes a light source that generates light, and light incident on the light incident surface is diffusely reflected and emitted from the light exit surface, A light guide plate that irradiates a light-transmitting region of the interior member, and the light-transmitting region of the interior member is formed of a translucent core material and a cloth material provided on the surface of the core material. It is characterized by.

(2) In the configuration of (1), at least a part of the light guide plate may be curved.

(3) In the configuration of (1) or (2), the light guide plate has the light incident surface provided on a side surface in a thickness direction, and the light emission surface is provided on one plate-like main surface. May be.

(4) In the configuration of (3), the light incident surface may include a recess at a position facing the light source.

(5) In the configuration of (3) or (4), the side surface facing the light incident surface may be formed thicker than the average thickness of the light emitting surface.

(6) In any one of the constitutions (3) to (5), the side surface facing the light incident surface is formed so as to diffuse light in a direction opposite to the emission direction of the light emission surface. May be.

(7) In any one configuration of the above (1) to (6), the outer edge of the light guide plate may be located within the range of the non-light-transmitting region when viewed from the vehicle interior side.

(8) In any one of the constitutions (1) to (7), the interior member may be formed as a door trim.

(9) A light guide plate according to a second aspect of the present invention is a light guide plate that diffuses and reflects light incident on a light incident surface from a light source and emits the light from the light output surface, at least a portion of which is curved. The light incident surface is provided on a side surface in a thickness direction, and the light emitting surface is provided on one plate-like main surface.

(10) In the configuration of (9), the light incident surface may include a recess at a position facing the light source.

(11) In the configuration of (9) or (10), the side surface facing the light incident surface may be formed thicker than an average thickness of the light emitting surface.

(12) In any one of the constitutions (9) to (11), the side surface facing the light incident surface is formed so as to diffuse light in a direction opposite to the emission direction of the light emission surface. May be.

ADVANTAGE OF THE INVENTION According to this invention, the interior part for vehicles excellent in the designability can be provided by making a cloth material shine uniformly.
Moreover, according to this invention, the light-guide plate which irradiates light uniformly to a cloth | cross material can be provided.

It is a perspective view which shows the vehicle door using the vehicle interior component which concerns on embodiment of this invention. It is an expanded sectional view of the AA line of FIG. It is a figure which shows the light-guide plate which concerns on embodiment of this invention, (A) Top view, (B) Front view, (C) Rear view, (D) Left side view, (E) Right side view, (F) It is a bottom view. It is a front view which shows the recessed part of the light-incidence surface of a light-guide plate. It is explanatory drawing which shows the state in which light advances the inside of a light-guide plate. It is sectional drawing which shows the 2nd side surface on the opposite side to the light-incidence surface of a light-guide plate. It is sectional drawing which shows the modification of the light-incidence surface of a light-guide plate.

Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings. Note that the same reference numerals are given to the same elements throughout the description of the embodiment.

FIG. 1 is a perspective view showing a vehicle door using vehicle interior parts according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG.

Usually, as shown in FIG. 1, the vehicle door 1 includes a door opening / closing handle, a door glass opening / closing switch, a speaker, an armrest, and the like on the vehicle interior side. And as FIG. 2 shows, the vehicle interior component 10 which concerns on embodiment of this invention is the door trim (interior member) which has the illuminating member 20 which radiate | emits light, and the translucent area | region 30a and the non-translucent area | region 30b. 30, and is configured as a part of the vehicle door 1.

That is, the vehicle interior part 10 includes a door trim 30 that faces the vehicle interior and is attached to a door panel (body panel) 2, and a lighting member 20 that is disposed between the door trim 30 and the door panel 2. . The door trim 30 has a light-transmitting region 30a above the armrest and a non-light-transmitting region 30b in the other part, and the illumination member 20 (not shown) is disposed on the back side of the light-transmitting region 30a.

The illumination member 20 on the back side of the door trim 30 is formed of a plurality of light sources 21 that generate illumination light and a light guide plate 22 having translucency. The light source 21 is an LED (light emitting diode), preferably a high-intensity LED or an ultra-high-intensity LED. The light source 21 is preferably an LED because of advantages such as power saving, downsizing, and low heat generation, but is not limited to the LED.

The plurality of light sources 21 are arranged in a row at an appropriate pitch on the long substrate 21a, and are connected to a connector connected to a battery power source (not shown) via a wire harness. The on / off control of the light source 21 is performed by operating a switch (not shown).

Next, the light guide plate 22 to which illumination light is supplied (incident) from the light source 21 will be described. 3A to 3F are views showing a light guide plate according to an embodiment of the present invention, where FIG. 3A is a top view, FIG. 3B is a front view, FIG. 3C is a rear view, and FIG. It is a figure, (E) right side view, (F) bottom view. FIG. 4 is a front view showing the concave portion of the light incident surface of the light guide plate.

The light guide plate 22 is a resin molded product having translucency. The resin material is appropriately selected from polycarbonate resin, acrylic resin, epoxy resin, and the like. Further, as shown in FIG. 3B or 3C, the light guide plate 22 is adjacent to the two opposing first and second side surfaces 22a and 22b and the first and second side surfaces 22a and 22b. The third and fourth side faces 22c and 22d formed so as to face each other at the matching positions, and the positions adjacent to the first, second, third and fourth side faces 22a, 22b, 22c and 22d. The first main surface 22e and the second main surface 22f formed so as to face each other are formed in a substantially quadrangular curved plate shape.

In the light guide plate 22, the first side surface 22 a in the thickness direction is used as a light incident surface (hereinafter, referred to as “light incident surface 22 a”) opposed to the light source 21, and the first main surface 22 e is used as the interior member 30. A light emitting surface (hereinafter referred to as “light emitting surface 22 e”) disposed opposite to the light emitting surface is used. Further, the outer edge of the light guide plate 22, particularly the second side surface 22b, is located within the non-light-transmitting region 30b as viewed from the vehicle interior side.

As shown in FIG. 4, a plurality of recesses 23 are formed on the light incident surface 22 a of the light guide plate 22 so as to face each light source 21. The recess 23 is formed in a state of being cut out in an arch shape from the light incident surface 22 a toward the second side surface 22 b, that is, toward the inside of the light guide plate 22.

Note that the outer shape of the light guide plate 22 is not limited to a square as long as it has at least the light incident surface 22a and the light emitting surface 22e. The shape of the recess 23 is also a semicircular arch, but may be a quadratic curve or a U-shape.

By the way, as shown in FIG. 3C, the second main surface 22f excluding the vicinity of the light incident surface 22a has a diffuse reflection structure for diffusively reflecting the light L2 incident on the light guide plate 22. A plurality of dot-like notches 24 are provided. For example, the dot-shaped step 24 has a larger area as it goes farther from the light source 21, and the interval between the dot-shaped steps 24 is also narrowed to change the density of the dot-shaped step 24. Assists the entire light plate 22 to shine evenly.

Specifically, the direction along the light incident surface 22a and the direction orthogonal to the light incident surface 22a are each divided into a plurality of regions, and regions are set in a matrix, and the density of the dot-shaped notches 24 is adjusted for each region. do it. This is because the light guide plate 22 is used as transmitted illumination in which the emitted light passes through the light transmitting region 30a, and is not required for extremely high uniformity like the light guide plate of the liquid crystal panel.

The dot-shaped notches 24 having the diffuse reflection structure are provided as necessary, and the shapes thereof are round (sphere), triangle (triangular prism, triangular pyramid), quadrangle (square prism, quadrangular pyramid). Etc. are freely selected. The diffuse reflection structure is not limited to the dot-like step 24, but may be dot-like printing or a reflection sheet.

Returning to FIG. 2, the translucent region 30 a of the door trim (interior member) 30 is disposed above the armrest and includes a translucent core material 31 and a cloth member 32 provided on the surface of the core material 31. Is formed. The non-light-transmitting region 30b other than the light-transmitting region 30a of the door trim 30 is formed by injection molding or molding a general-purpose thermoplastic resin such as polyethylene resin, polypropylene resin, acrylonitrile / butadiene / styrene (ABS) resin, or the like. By press molding, it is molded into a desired curved surface shape. The non-light-transmitting region 30b may be provided with a skin material such as a cloth material, a main grain / wood grain sheet, leather / synthetic leather, and in this embodiment, the non-light-transmitting region 30a is not transparent. The main grain 33 is arranged in the region 30b.

Further, the core material 31 is formed into a desired curved surface shape shown in FIGS. 1 and 2 by injection molding or mold press molding a transparent or translucent resin material in order to ensure translucency. . The resin material is appropriately selected from polycarbonate resin, acrylic resin (methacrylic resin), polyarylate resin, polyester resin, polystyrene resin, ABS resin, and the like.

Next, the cloth material 32 is provided on the surface (vehicle interior side) of the core material 31 and is a cloth or knitted cloth, and specifically includes moquette, velvet, jersey, tricot, double raschel and the like. It is done. When the cloth material 32 is irradiated with light, it passes through a minute gap such as a woven pattern or a knitted pattern, and the surface becomes bright. The cloth material 32 is dyed or colored in a predetermined color, and may have a pattern in addition to a normal woven pattern or knitted pattern.

Here, the operation of the illumination member 20 will be described. FIG. 5 is an explanatory diagram illustrating a state in which light travels inside the light guide plate.

When the light source 21 is turned on, the light L1 is supplied from the light source 21 into the concave portion 23 of the light incident surface 22a of the light guide plate 22, as shown in FIGS. The light L1 incident on the recess 23 is guided while being refracted as light L2 that diffuses radially toward the second, third, and fourth side surfaces 22b, 22c, and 22d. Then, when the light L2 travels inside the light guide plate 22, the dot-like notches 24 and the irregular reflection on the inner surfaces of the first main surface (light emitting surface) 22e and the second main surface 22f. Therefore, it is diffused efficiently and uniformly over a wide area. Thereby, the light guide plate 22 is in a state of emitting light uniformly over the entire surface, and can emit bright light.

Then, when light is supplied to the light incident surface 22a of the light guide plate 22 of the illumination member 20 and light is emitted from the light emitting surface 22e, the light is irradiated to the light transmitting region 30a on the back surface of the door trim 30. Then, since the irradiated light passes through the core material 31 and the cloth material 32 and slightly shines the surface of the cloth material 32, the vehicle interior using the vehicle door 1 constituted by the vehicle interior part 10 is used. A new decorative effect can be imparted.

By the way, since the light from the light source 21 has a straight traveling property, in particular, light is emitted (leaks) not only from the side surface facing the light incident surface 22a, that is, from the second side surface 22b. Then, the cross member 32 of the door trim 30 may be locally bright in the vicinity corresponding to the second side surface 22b.

Therefore, as shown in FIG. 6, the second side surface 22b is formed thicker than the average value of the thickness of the light emitting surface 22e (the thickness from the surface of the light emitting surface 22e to the surface of the second main surface 22f). (This portion is hereinafter referred to as “rib 25”). The thickness of the rib 25 is appropriately set according to the thickness of the light emitting surface 22e, the amount of light emitted from the second side surface 22b, and the like.

Further, the rib 25 is formed so as to diffuse light in a direction opposite to the light emitting direction of the light emitting surface 22e (this portion is hereinafter referred to as “cut surface 26”). Specifically, the cut surface 26 is processed and formed into a concave shape with a circular arc in section from the light emitting surface 22e side. Note that the shape of the cut surface 26 may be a straight line instead of an arc, and the shape / dimension is appropriately set according to the amount of light emitted from the second side surface 22b. Further, depending on the amount of light emitted from the second side surface 22b, only one of the rib 25 and the cut surface 26 may be formed.

If necessary, a reflective sheet is provided on the side surfaces 22a to 22d and 22f excluding the concave portion 23 provided on the light incident surface 22a and the light emitting surface 22e to enhance the diffuse reflection effect into the light guide plate 22. Alternatively, a reflective member by silver vapor deposition or the like may be provided. By doing in this way, the light which reached | attained each outer edge of the light-guide plate 22 enters into the inside of the light-guide plate 22 again, and is radiate | emitted by the diffuse reflection structure in the light-projection direction. Further, the reflecting member may be provided on the cut surface 26.

Further, the light incident surface 22a may be thicker than the average thickness of the light emitting surface 22e according to the size of the light source 21, and in this case, as shown in FIG. 7, the thickness of the light emitting surface 22e. It is good to form thinly gradually.

As described above, the vehicle interior component 10 according to the embodiment of the present invention includes the illumination member 20 that emits light and the interior member 30 that includes the light-transmitting region 30a and the non-light-transmitting region 30b. The illumination member 20 irradiates the light-transmitting region 30a of the interior member 30 by diffusing and reflecting the light incident on the light incident surface 22a and the light incident surface 22a to be emitted from the light emitting surface 22e. The translucent region 30a of the interior member 30 is formed by a translucent core material 31 and a cloth member 32 provided on the surface of the core material 31. Thus, by turning on the light source 21 of the illumination member 20, the cross member 32 of the interior member 30 can be illuminated uniformly, and an interior part for a vehicle having excellent design can be provided.

Further, at least a part of the light guide plate 22 is curved. As a result, even if the interior side of the vehicle interior has a complicated uneven curved surface shape like the door trim 30, the light guide plate 22 is curved and provided so as to follow the curved surface shape of the core 31 of the door trim 30. Can be reduced.

The light incident surface 22 a of the light guide plate 22 includes a recess 23 at a position facing the light source 21. Thereby, since the light incident on the light incident surface 22a can be diffused radially corresponding to the outer shape of the light guide plate 22, the light can be propagated to the entire inside of the light guide plate 22.

The side surface 22b of the light guide plate 22 facing the light incident surface 22a is formed to be thicker than the average thickness of the light emitting surface 22e. As a result, the light that has traveled to the rib 25 is changed in refraction and reflection state, the amount of light traveling in the direction of the second side surface 22b is reduced, and the amount of light emitted from the second side surface 22b. Therefore, it is possible to prevent the cloth member 32 of the door trim 30 from being locally brightened.

The side surface 22b of the light guide plate 22 facing the light incident surface 22a is formed so as to diffuse light in a direction opposite to the light exiting direction of the light emitting surface 22e. Thereby, the light that has reached the cut surface 26 is reflected by the curved surface of the cut surface 26 and travels mostly in the direction of the second main surface 22f, so that the amount of light emitted from the second side surface 22b is reduced. It is possible to prevent the cloth member 32 of the door trim 30 from being locally brightened.

The outer edge of the light guide plate 22 is located within the non-light-transmitting region 30b when viewed from the vehicle interior side. In particular, the second side surface 22b facing the light incident surface 22a is located in the range of the main grain 33 of the upper non-translucent region 30b. Thereby, even if light is emitted from the second side surface 22b, the cross member 32 in the light-transmitting region 30a of the door trim 30 is not irradiated, so that it can be prevented from becoming brighter locally.

When the color is selected by changing the color of the light guide plate 22 or the light emission color of the LED used as the light source 21, the color of the light emitted from the illumination member 20 changes, and the color of the core 31 and the cloth material When 32 colors are selected, the color of the cross material 32 shines and the design and decoration effects can be further improved. Moreover, since direct illumination, indirect illumination, and transmitted illumination can be appropriately combined and arranged in the vehicle interior, the vehicle interior can be designed with more variations, contributing to design and decoration effects. it can.

Moreover, according to the vehicle interior component 10 according to the embodiment of the present invention, since the light incident surface 22a is provided only on one side, the number of light sources can be reduced as compared with the illumination device found in Patent Document 1, and thus Costs can be reduced, and space can be reduced. In addition, since LEDs and light guide plates that are less expensive than the EL light source of the illumination device found in Patent Document 2 are used, costs can be reduced.

In the above embodiment, the interior side of the vehicle interior is a complex uneven curved door trim 30, but it goes without saying that the interior of the vehicle interior can also be applied to a relatively flat door trim. Moreover, although the vehicle interior part 10 is a door trim that constitutes the vehicle body panel 2, the vehicle interior part 10 is not limited to this and may be a roof panel or the center console.

It should be noted that the present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved.

1 Vehicle door 2 Door panel (body panel)
DESCRIPTION OF SYMBOLS 10 Interior component 20 for vehicles Illumination member 21 Light source, 21a Board | substrate 22 Light-guide plate, 22a 1st side surface (light incident surface), 22b 2nd side surface, 22c 3rd side surface, 22d 4th side surface, 22e 1st Main surface (light emitting surface), 22f Second main surface 23 Recess 24 Dot-shaped notch 25 Rib 26 Cut surface 30 Door trim (interior member), 30a Translucent region, 30b Non-translucent region 31 Core material 32 Cross member 33 Honkoku L1-L2 Hikari

Claims (12)

1. A vehicle interior component comprising an illumination member that emits light, and an interior member having a translucent area and a non-translucent area,
   The illumination member includes: a light source that generates light; and a light guide plate that diffuses and reflects light incident on the light incident surface and emits the light from the light exit surface to irradiate the light-transmitting region of the interior member. Have
   The interior part for vehicles is characterized in that the translucent region of the interior member is formed of a translucent core material and a cloth material provided on the surface of the core material.
2. The vehicle interior part according to claim 1, wherein at least a part of the light guide plate is curved.
3. 3. The vehicle according to claim 1, wherein the light guide plate has the light incident surface provided on a side surface in a thickness direction, and the light emission surface is provided on one main surface of the plate shape. Interior parts.
4. The vehicle interior part according to claim 3, wherein the light incident surface includes a recess at a position facing the light source.
5. The vehicle interior part according to claim 3 or 4, wherein a side surface facing the light incident surface is formed thicker than an average thickness of the light emitting surface.
6. The side surface facing the light incident surface is formed so as to diffuse light in a direction opposite to an emission direction of the light emission surface. Interior parts for vehicles.
7. The interior part for a vehicle according to any one of claims 1 to 6, wherein an outer edge of the light guide plate is located within a range of the non-light-transmitting region as viewed from a vehicle interior side.
8. The vehicle interior part according to any one of claims 1 to 7, wherein the interior member is formed as a door trim.
9. A light guide plate that diffuses and reflects light incident on a light incident surface from a light source and emits the light from a light exit surface;
   At least partly curved,
   The light incident surface is provided on a side surface in the thickness direction,
   The light-emitting plate is characterized in that the light exit surface is provided on one plate-like main surface.
10. The light guide plate according to claim 9, wherein the light incident surface includes a concave portion at a position facing the light source.
11. The light guide plate according to claim 9 or 10, wherein a side surface facing the light incident surface is formed thicker than an average thickness of the light emitting surface.
12. The side surface opposite to the light incident surface is formed so as to diffuse light in a direction opposite to an emission direction of the light emission surface, according to any one of claims 9 to 11. Light guide plate.

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