JP2007314135A - Decorating member, and airbag device equipped with decorating member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a background color from being reflected in a decorating pattern of a decorating member, and to improve commercial value by enhancing a decorating property and the flexibility of design. <P>SOLUTION: On a back surface of a transparent decorating plate 2 of the decorating member 1 attached to an automobile steering wheel, the decorating pattern 20 is recessed. On the back surface, a transparent light guiding plate 3 is disposed to abut thereon. An abutting plate 4 is disposed on the back surface of the light guiding plate 3. Each plate 2, 3, 4 is integrally held in a container 5 by an annular frame 6. Black coating is performed on a part except for the decorating pattern 30 on the back surface of the decorating plate 2. An optically transparent silver translucent layer is formed on a surface of the light guiding plate 3, and a satin finished surface diffuse reflecting light is formed on the back surface thereof. A while color series coating is performed on the abutting plate 4. A light emitting unit 20 is disposed on a side surface of the light guiding place 3. Light from a light source 22 is led into the light guiding plate 3, and led to the decorating pattern 30 of the decorating plate 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a decorative member attached to a steering wheel, or a decorative member of an airbag device attached to a steering wheel, and an airbag device including the decorative member.

  An airbag device for a driver's seat installed in an automobile deploys the airbag on the front of the driver's seat in the event of a vehicle collision, receives the passenger and protects it from the impact of the collision, and faces the passenger at the center of the steering wheel. It is common to install in the position to do. Therefore, the airbag device for the driver's seat is a component that is easily occupant's eyes and requires a certain degree of aesthetics in addition to the occupant protection function. Therefore, conventionally, an airbag device has been proposed in which another decorative member having a decorative pattern such as a logo mark or a car name is attached to the airbag cover to enhance its decorativeness and improve aesthetic appearance (Patent Literature). 1).

FIG. 5 is a front view showing a state in which the airbag apparatus having the conventional decorative member is mounted on a steering wheel.
As shown in the figure, the airbag device 110 is mounted at a central position of the steering wheel 100 and has an attachment portion 112 for attaching a decorative member 115 at a substantially central portion of the airbag cover 111. The attachment portion 112 is formed integrally with the airbag cover 111 by denting the surface of the airbag cover 111 in an annular shape. On the other hand, the decorative member 115 is a metal annular member having a decorative pattern on the surface, and is fitted into the concave portion of the mounting portion 112 and fixed by a fixing means (not shown).

  As described above, an airbag device having a decorative member on an airbag cover is conventionally known. As a structure of the decorative member itself, for example, a function of a horn (horn) switch of an automobile is provided in addition to the decorative property. Some of them are also known at the same time.

  FIG. 6 is a cross-sectional view showing an example of such a conventional decorative member, although it is not described in the patent literature, and FIG. 7 is a cross-sectional view schematically showing a part of the Z portion in FIG. It is.

  As shown in the figure, the conventional decorative member 120 includes a disk-shaped decorative plate 121 having a decorative pattern 130, a lower plate 122 that contacts the back surface of the decorative plate 121, and the plates 121, 122 stacked together. An annular frame (ring) 124 is provided as a holding frame to be combined, and a container 123 that accommodates them. An annular protrusion 122A is formed on the back surface of the lower plate 122, and a substantially annular guide protrusion 123A is formed on the bottom surface of the container 123. The annular protrusion 122A is slid into the guide protrusion 123A. It engages freely.

  A bolt 125, which is the first electrode, is fitted in the through hole 123B with a washer 125A sandwiched between substantially the center of the bottom surface of the container 123. On the other hand, in the annular protrusion 122A of the lower plate 122, a spring tray 126 as a second electrode is disposed to face the head of the bolt 125, and between the spring tray 126 and the bottom surface of the container 123, A spring 127 is disposed with the contact plate 128 interposed therebetween. When the decorative plate 121 is pressed from the above state, the spring tray 126 descends in the container 123 while resisting the elastic force of the spring 127, contacts the above-described bolt 125, and the horn circuit of the decorative member 120 Close.

  Here, the decorative plate 121 is made of a transparent material such as acrylic resin or polycarbonate, for example, and a decorative pattern 130 is formed by recessing the back surface of the decorative plate 121 (referred to as a concave in this specification). Further, as shown in an enlarged view in FIG. 7, for example, a black paint 131 is applied to a portion other than the decorative pattern 130 on the back surface of the decorative plate 121. An opaque silver layer 132 is formed by applying silver paint or plating. With this configuration, the decorative plate 121 appears to appear in silver in the black background color when viewed from the surface.

  However, in this decorative plate 121, since the silver layer 132 is formed on the back surface of the decorative pattern 130 that is convex when viewed from the front surface, the black color is reflected on the silver pattern by reflecting the surrounding black color. Reflect. As a result, the silver decorative pattern 130 is shaded and the pattern becomes a dark image as a whole. In addition, there is a problem that the commercial value as the decorative plate is lowered, for example, the stereoscopic effect is reduced. Further, in such a decorative pattern 130, for example, when the inside of the vehicle is dark, the visibility is low, or other than the shape, only the colors applied to the back of the decorative plate 121 are the main elements of the design. Improvements in decorativeness and design freedom are desired.

JP-A-9-11838

  The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to prevent the background color from being reflected in the decorative pattern in the decorative member, and to enhance the decorativeness and the degree of freedom of design. It is to improve the product value.

The invention of claim 1 is a decorative member attached to a steering wheel of an automobile, a transparent decorative plate having a decorative pattern recessed on the back surface, a light source disposed on the back surface side of the decorative plate, and the decorative plate And a transparent light guide plate that guides light from the light source to the back surface of the decorative plate, and a surface that contacts the decorative plate of the light guide plate is translucent translucent coloring And at least a portion of the decorative plate excluding the decorative pattern is subjected to an opaque coloring different from the coloring of the light guide plate.
A second aspect of the present invention is the decorative member according to the first aspect, further comprising: a light diffusing and reflecting means for diffusing and reflecting light from the light source on a back surface of the light guide plate in contact with the decorative plate. The light guide plate is characterized in that light from the light source is introduced from a side surface and guided to the back surface of the decorative plate.
According to a third aspect of the present invention, in the decorative member according to the second aspect, the light diffusing and reflecting means is a satin surface formed on the back surface of the light guide plate.
According to a fourth aspect of the present invention, in the decorative member according to any one of the first to third aspects, the contact member is disposed in contact with the back surface of the light guide plate and is provided with a white opaque coloring. It is characterized by that.
The invention according to claim 5 is a decorative member attached to a steering wheel of an automobile, a transparent decorative plate having a decorative pattern recessed on the back surface, a light source disposed on the back surface side of the decorative plate, and the decorative plate And a transparent light guide plate that introduces light from the light source from the side surface and guides the light from the side surface to the back surface of the decorative plate, and is opaque on the back surface of the surface that contacts the decorative plate of the light guide plate And at least a part of the decorative plate excluding the decorative pattern is subjected to an opaque coloring different from the coloring of the light guide plate.
The invention according to claim 6 is a decorative member attached to a steering wheel of an automobile, a transparent decorative plate having a decorative pattern recessed on the back surface, a light source disposed on the back surface side of the decorative plate, and the decorative plate A transparent light guide plate that is disposed in contact with the back surface of the light source and guides light from the light source from the side surface to the back surface of the decorative plate; and a back surface of the surface of the light guide plate that contacts the decorative plate. A contact plate arranged and opaquely colored, and at least a part of the decorative plate excluding the decorative pattern is colored with an opaque color different from the color of the contact plate.
A seventh aspect of the present invention is an airbag device comprising the decorative member according to any one of the first to sixth aspects.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to prevent a background color reflecting in a decoration pattern in a decoration member, the decoration property and the freedom degree of a design can also be raised, The commercial value can be improved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, similarly to the conventional decorative member 120 described above, a decorative member having a horn function attached to a steering wheel of an automobile will be described as an example.

FIG. 1 is a cross-sectional view of the decorative member of the present embodiment.
As shown in the figure, the decorative member 1 includes a transparent disk-shaped decorative plate 2 having a decorative pattern 30 on the back surface, a substantially disk-shaped light guide plate 3 disposed in contact with the back surface of the decorative plate 2, and a guide. A contact plate 4 that is disposed in contact with the back surface of the optical plate 3 and sandwiches the light guide plate 3 between the decorative plate 2, a substantially bowl-shaped container 5 that accommodates the plates 2, 3, 4, and the like; 5 and an annular frame (ring) 6 that engages slidably and integrally with each of the plates 2, 3, 4 superimposed on the inner peripheral portion. A ring 6 engaged with 3, 4 is engaged with the container 5, and the plates 2, 3, 4 are accommodated and held in the container 5.

  The contact plate 4 has a disk shape that is substantially the same diameter as the decorative plate 2, and an annular protrusion 4 </ b> A that protrudes into the container 5 is formed concentrically on the back surface thereof. On the other hand, a substantially annular guide protrusion 5A that protrudes upward is formed on the bottom surface of the container 5 to guide the movement of the annular protrusion 4A on the inner peripheral surface. The annular protrusion 4A of the contact plate 4 is slidably engaged.

  A through hole 5B is formed substantially at the center of the bottom surface of the container 5 on the inner peripheral side of the guide protrusion 5A, and a bolt 7 as a first electrode is fitted in the through hole 5B with a washer 7A interposed therebetween. . On the other hand, a spring tray 8 as a second electrode formed in a flat mortar shape is disposed in the annular protrusion 4A of the contact plate 4 with its bottom portion facing the top surface of the head of the bolt 7. A spring 9 is disposed between the spring tray 8 and the bottom surface of the container 5 with a contact plate 10 interposed therebetween. The spring tray 8 is urged upward by the spring 9 so that the upper surface of the spring tray 8 is in contact with the back surface of the contact plate 4 and the contact plate 4, the light guide plate 3, and the decorative plate 2. Each contact state between them is maintained.

  When the decorative plate 2 is pressed when ringing the horn from this state, the spring tray 8 (second electrode) descends within the guide protrusion 5A of the container 5 against the elastic force of the spring 9, It contacts the head of the bolt 7 (first electrode). As a result, the horn circuit of the decorative member 1 including the bolt 7, the spring tray 8, the spring 9, and the contact plate 10 is closed.

  In addition to the above, in the decorative member 1 of the present embodiment, the notch portion 11 is formed in part of the side surfaces of the light guide plate 3 and the contact plate 4, and the light emitting unit 20 is attached to the notch portion 11. The light emitting unit 20 is connected to a harness 25 made of a lead wire or the like for supplying power. The harness 25 is connected to the container through a through hole 5C formed below the light emitting unit 20 at the bottom of the container 5. 5 is derived to the outside.

FIG. 2 is a cross-sectional view schematically showing a part of the W portion of FIG. 1 including the light emitting unit 20.
As shown in the figure, the light emitting unit 20 includes a substantially plate-like substrate 21 fixed to the abutting plate 4, a light source 22 provided on the substrate 21 so as to be positioned in the notch 11 </ b> A on the side of the light guide plate 3, and the like. Thus, when the decorative plate 2 is pressed, it moves together without changing the relative position with respect to the contact plate 4 and the light guide plate 3.

  The light source 22 of the light emitting unit 20 is, for example, a light emitting diode (LED) that emits white light, and automatically lights up in conjunction with other operations such as when a light lighting switch of an automobile is turned on, or It is possible to control light emission by an external device connected to the harness 25, such as lighting when a dedicated switch is turned on. Further, even when the light source 22 emits light at the arrangement position on the back side of the decorative plate 2, the light does not leak to the surface of the decorative plate 2, as will be described later. Part 11A) is introduced into the interior.

  Here, the decorative plate 2 of the present embodiment is made of a transparent material such as acrylic resin or polycarbonate, and the back surface thereof (see FIG. 2) in the same manner as the above-described conventional decorative plate 121 (see FIG. 7). The decorative pattern 30 is formed in a concave shape (recessed) by engraving or molding, and an opaque black paint 31 colored by, for example, silk printing is applied to a portion other than the decorative pattern 30 on the back surface. . However, the decorative plate 2 is different from the conventional decorative plate 121 in that the back surface of the black paint 31 and the decorative pattern 30 are not colored and the decorative pattern 30 remains transparent. Therefore, in the decorative plate 2, when viewed from the front surface, the color or the like of the surface of the light guide plate 3 that is in contact with the back surface thereof is reflected in the decorative pattern 30 and is visually recognized.

  On the other hand, the light guide plate 3 is made of a transparent material such as acrylic resin or polycarbonate, and a translucent silver-colored silver-colored translucent layer 32 capable of transmitting light is formed on the surface in contact with the decorative plate 2. ing. The silver translucent layer 32 is formed by, for example, applying silver color to the surface of the light guide plate 3 by metal plating, vapor deposition, painting, etc., and reducing the film thickness of the silver film at that time. In addition, the light guide plate 3 includes light diffusion reflection means 33 that diffuses and reflects light on the back surface (hereinafter simply referred to as the back surface) of the surface in contact with the decorative plate 2. Here, the back surface of the light guide plate 3 is provided with minute irregularities by, for example, molding, embossing, blasting, printing, or the like to form a pear surface, and this pear surface is used as the light diffuse reflection means 33.

  Thereby, the light guide plate 3 emits the light of the light source 22 introduced from the side surface described above from the light translucent silver translucent layer 32 on the front surface while being scattered and diffusely reflected by the back pear ground 33 without unevenness. And led to the back of the decorative plate 2. Further, in this decorative member 1, the contact plate 4 that contacts the back surface of the light guide plate 3 is made of a white material having a relatively high light reflectance, that is, a material having an opaque coloring of white or a color close thereto, for example, The contact plate 4 is made of polycarbonate, ABS resin, or the like, and has a light reflecting function or the like.

  Therefore, according to the decorative member 1 of the present embodiment, when the decorative plate 2 is viewed from the surface when the light source 22 is not emitting light, the color of the surface of the light guide plate 3 (silver translucent layer 32) through the transparent decorative pattern 30. Therefore, the decorative pattern 30 appears to have a glossy silver color (translucent silver) in the black background color. At this time, since the decorative pattern 30 itself is transparent, the decorative pattern 30 portion does not reflect the surrounding black background color, and it is possible to prevent black from moving there. As a result, the decorative pattern 30 cannot be shaded and the pattern becomes a clear and bright image as a whole, and the three-dimensional effect can be enhanced. be able to.

  In this decorative member 1, since the coloring (silver translucent layer 32) applied to the surface of the light guide plate 3 has light transparency, the lower color also affects the appearance of the decorative pattern 30, etc. through it. May give. However, in this decorative member 1, since the abutting plate 4 that contacts the back surface of the light guide plate 3 is colored opaque in white, the color of the decorative pattern 30 can be made brighter, and the appearance image is improved. A feeling can be heightened. At the same time, the contact plate 4 can also prevent the members such as the spring tray 8 provided on the back side from being seen through the decorative pattern 30.

  On the other hand, when the light source 22 emits light, the light passes through the light guide plate 3 through the silver translucent layer 32 and is guided to the back surface of the decorative plate 2, but is transmitted through the black paint 31 portion on the back surface of the decorative plate 2. Without being emitted, the decorative pattern 30 can be emitted only from the transparent decorative pattern 30 portion. Moreover, since the emitted light at this time is discolored by the translucent coloring (here silver) given to the surface of the light-guide plate 3, when white light is used like this embodiment, emitted light is Has the same color tone as the surface of the light guide plate 3, and the decorative pattern 30 can emit light without greatly changing the impression of non-light emission.

  Further, a part of the light introduced into the light guide plate 3 is reflected into the light guide plate 3 by the silver translucent layer 32 on the surface of the light guide plate 3, and hits the back surface of the light guide plate 3 including this reflected light. Since the light is scattered by the pear ground 33 and diffusely reflected without unevenness, it is possible to reduce unevenness in the light emission luminance of the decorative pattern 30 and make it uniform. In addition, in this decorative member 1, since the abutment plate 4 that abuts the pear ground 33 is colored with a white color having a high light reflectance, the light is also reflected by the surface of the abutment plate 4, thereby improving the light reflection efficiency. This can be further enhanced, and the decorative pattern 30 can be illuminated more brightly. Therefore, according to the decorative member 1, the visibility of the decorative pattern 30 can be improved, for example, at night or when the interior of the vehicle is dark in a tunnel, and the decorative property of the decorative member 1 and the degree of design freedom can be increased. The product value can be further improved.

  Here, when the light transmittance of the silver translucent layer 32 formed on the surface of the light guide plate 3 is smaller than 10%, the brightness of the decorative pattern 30 at the time of light emission may be lowered and become too dark. On the contrary, when it is larger than 50%, the color of the silver translucent layer 32 becomes too thin, and the color of the decorative pattern 30 when not emitting light may become unclear. Therefore, the light transmittance on the surface of the light guide plate 3 is more preferably 10% to 50%.

  Moreover, in this embodiment, although black coating 31 was given to parts other than the decorative pattern 30 of the decorative board 2, the part other than the decorative pattern 30 is provided with a non-colored part, and thereby, for example, a transparent pattern such as a horn mark is provided. The decorative plate 2 may be formed. Furthermore, as long as the color of the black paint 31 part is a color different from the coloring of the surface of the light guide plate 3, it may be an opaque color other than black. Similarly, the surface of the light guide plate 3 may be colored other than translucent silver, for example, translucent gold or copper, and other translucent coloring different from the back of the decorative plate 2. In consideration of the visibility of the decorative pattern 30, the decorative effect, etc., the decorative pattern 30 is made to emit light in a different color by using an LED other than the white LED (for example, red, blue, green, etc.). Also good. Thus, in the decorative member 1 of this embodiment, since it can combine using the color and light of each part using various things, the decoration property and the freedom degree of design can be raised significantly.

  In addition, as the light diffusion reflection means 33 on the back surface of the light guide plate 3, for example, a light diffusive reflection layer is applied to the back surface by applying a paint or resin having light diffusion reflection property by painting or printing, or attaching a tape having similar properties It is also possible to adopt a combination of well-known means other than the satin surface, such as forming a surface. This light diffusive reflection layer may be formed from a transparent material (paint, resin, tape, etc.) having minute surface irregularities and internal bubbles, for example, a diffusing agent such as titanium oxide, silicon oxide powder, or metal powder. You may form from the material which mix | blended with the binder. Further, the back surface of the light guide plate 3 may be light-reflective colored such as white, metallic color or fluorescent color, or a metal layer may be formed by plating or vapor deposition, and the surface of the contact plate 4 is similarly formed. Then, the contact plate 4 may be used as the light diffusing and reflecting means 33. In this case, the reflection efficiency can be improved and the brightness of the decorative pattern 30 can be further increased.

  Further, unlike the present embodiment, the surface of the light guide plate 3 may remain transparent without being colored, and the back surface may be given an opaque color different from the decorative plate 2 such as silver, or the light guide plate 3 may be double-sided. Alternatively, the surface of the contact plate 4 may remain transparent without being colored, and the surface of the contact plate 4 may be colored with an opaque color different from the decorative plate 2 such as silver. Even when the decorative member 1 is formed in this way, the color of the back surface of the light guide plate 3 or the surface of the contact plate 4 can be seen through the transparent decorative pattern 30 portion, and the decorative pattern 30 portion can also emit light. Each effect similar to the case where the surface of the light guide plate 3 described above is semitransparently colored can be obtained.

Next, another embodiment to which the decorative member 1 described above is applied will be described.
In this embodiment, the decorative member 1 is applied as a center member of an airbag device mounted on a steering wheel of an automobile.

FIG. 3 is a front view showing a state in which the airbag apparatus is mounted on the steering wheel.
As shown in the figure, the airbag device 40 of the present embodiment is attached to the center portion of the steering wheel 50 and incorporated in the steering device of the automobile, and the decorative member 1 is disposed in the center portion.

FIG. 4 is a cross-sectional view schematically showing the airbag device 40.
As shown in the figure, the airbag device 40 includes a support member 41, an airbag cover 42, an airbag 43, an inflator 44, and the like, and the airbag cover 42 has a configuration described above. 1 is attached.

  The support member 41 is a member that is attached to an end portion side of a steering shaft (not shown) and is disposed at a substantially central portion of the steering wheel 50. A base plate 41A having a substantially circular hole at the central portion, and a base plate The inflator 44 is accommodated in the connecting member 41B through the hole in the central portion of the base plate 41A. The connecting member 41B has a substantially bowl-like connecting member 41B and a substantially annular cushion plate 41C.

  The airbag cover 42 is formed, for example, in a substantially bowl shape with resin, and has a substantially frustoconical shape corresponding to the outer shape of the container 5 of the decoration member 1 in order to accommodate the decoration member 1 as a center member in the center thereof. A recess 42A is formed. The decorative member 1 is disposed and accommodated in the recess 42A. At this time, the bolt 7 which is the first electrode is passed through the through hole formed in the substantially central portion of the recess 42A and the connecting member 41B. Is fixed to the connecting member 41 </ b> B with a nut 45 and attached to the airbag device 40. At the same time, the airbag cover 42 is also fixed to the connecting member 41B by the bolt 7 and the nut 45.

  An airbag 43 is housed in the airbag cover 42 in a state of being folded around the connection member 28. The airbag 43 is fixed by sandwiching the end portion between the cushion plate 41C and the connecting member 41B and fastening them integrally to the base plate 41A with bolts and nuts (not shown). Thereby, the connecting member 41B is also fixed to the base plate 41A.

  As described above, by attaching the decorative member 1 to the airbag device 40, the decorativeness and the commercial value of the airbag device 40 can be further enhanced than the conventional one.

  In each of the above embodiments, the decorative member 1 having a horn function has been described as an example. However, the decorative member 1 does not have the horn function, and each of the plates 2, 3, 4, the light emitting unit 20, etc. Only a member having a decorative function may be attached to the steering wheel 50 or the airbag device 40. That is, the decorative member 1 is not provided with a member for forming a horn circuit such as the spring tray 8, and the plates 2, 3, and 4 are overlapped on predetermined positions of the steering wheel 50 and the airbag device 40 in the same manner as described above. May be arranged, and the light emitting unit 20 may be attached to the side surface of the light guide plate 3 to exhibit decorativeness and the like.

It is sectional drawing of the decoration member of this embodiment. FIG. 2 is a cross-sectional view schematically showing a part of a W portion in FIG. 1. It is a front view which shows the state which mounted | wore the steering wheel with the airbag apparatus provided with the decoration member. It is sectional drawing which shows typically the airbag apparatus provided with the decoration member. It is a front view which shows the state which mounted | wore the steering wheel with the airbag apparatus provided with the conventional decoration member. It is sectional drawing which shows the example of the conventional decoration member. It is sectional drawing which shows a part of Z section of FIG. 6 typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Decorative member, 2 ... Decorative plate, 3 ... Light guide plate, 4 ... Contact plate, 4A ... Annular ridge, 5 ... Container, 5A ... Guide ridge 5B ... through hole, 5C ... through hole, 6 ... annular frame (ring), 7 ... bolt, 7A ... washer, 8 ... spring tray, 9 ... spring, DESCRIPTION OF SYMBOLS 10 ... Contact plate, 11 ... Notch part, 20 ... Light emission unit, 21 ... Board | substrate, 22 ... Light source, 25 ... Harness, 30 ... Decoration pattern, 31 ... Black coating, 32 ... silver translucent layer, 33 ... light diffuse reflection means, 40 ... airbag device, 41 ... support member, 41A ... base plate, 41B ... connecting member, 41C ... Cushion plate, 42 ... Airbag cover, 42A ... Recess, 43 ... Airbag, 4 ... inflator, 45 ... nut, 50 ... steering wheel.

Claims (7)

A decorative member attached to a steering wheel of an automobile,
A transparent decorative plate with a decorative pattern recessed on the back;
A light source disposed on the back side of the decorative plate;
A transparent light guide plate that is disposed in contact with the back surface of the decorative plate and guides light from the light source to the back surface of the decorative plate;
The surface of the light guide plate that is in contact with the decorative plate is colored with a translucent translucent color, and at least a portion of the decorative plate excluding the decorative pattern is colored with an opaque color different from the color of the light guide plate. A decorative member characterized by that. The decorative member according to claim 1,
A light diffusing and reflecting means for diffusing and reflecting light from the light source on the back surface of the light guide plate contacting the decorative plate;
The light guide plate introduces light from the light source from a side surface and guides it to the back surface of the decorative plate. In the decorative member according to claim 2,
The decorative member, wherein the light diffusing and reflecting means is a satin surface formed on a back surface of the light guide plate. The decorative member according to any one of claims 1 to 3,
A decorative member comprising an abutting plate disposed in contact with the back surface of the light guide plate and colored with a white opaque color. A decorative member attached to a steering wheel of an automobile,
A transparent decorative plate with a decorative pattern recessed on the back;
A light source disposed on the back side of the decorative plate;
A transparent light guide plate that is disposed in contact with the back surface of the decorative plate, and that guides light from the light source from the side surface to the back surface of the decorative plate;
The back surface of the light guide plate contacting the decorative plate is opaquely colored, and at least a portion of the decorative plate excluding the decorative pattern is colored with an opaque color different from the color of the light guide plate. A decorative member. A decorative member attached to a steering wheel of an automobile,
A transparent decorative plate with a decorative pattern recessed on the back;
A light source disposed on the back side of the decorative plate;
A transparent light guide plate that is disposed in contact with the back surface of the decorative plate, introduces light from the light source from the side surface and guides it to the back surface of the decorative plate;
An abutting plate disposed in contact with the back surface of the light guide plate that abuts on the decorative plate and colored opaque;
A decorative member, wherein at least a part of the decorative plate excluding the decorative pattern is colored with an opaque color different from the color of the contact plate.   An airbag device comprising the decorative member according to any one of claims 1 to 6.

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