JP2002120661A - Linear decoration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminous molding that has a new structure. SOLUTION: The luminous molding has a mounting base part and a light guide part. A first surface of the light guide part exposed when the base part is fixed to a mounted member has a half mirror layer, and the other surface of the light guide part has a reflecting layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line-shaped decorative body and, for example, has excellent design as a molding for interior parts for vehicles.

[0002]

2. Description of the Related Art Various attempts have been made to add design accents to door trims, instrument panels, consoles, and the like as interior parts of vehicles. There is a case where a mall is used as one measure for improving the design.

[0003]

DISCLOSURE OF THE INVENTION The present inventors have repeatedly studied to provide such a molding with a new design. As a result, he noticed that the entire mall emits light at night. Therefore, it has been considered that an electroluminescent member is arranged in the entire area to emit light in the entire mall, but this measure causes the manufacturing cost to be too high.

The present invention has been made to solve such a problem, and has the following configuration. That is, a half mirror layer is formed on a first surface of the light guide that is exposed when the base is attached to a member to be mounted, the light guide having a base for attachment and a light guide. Wherein a reflective layer is formed on another surface of the linear decorative body.

[0005] According to the line-shaped decorative body configured as described above, the light introduced from one end of the light guide is transmitted while being irregularly reflected in the light guide by the reflection layer, and is substantially uniform in intensity from the first surface. And is transmitted through the half mirror layer. Thus, the entire line-shaped decorative body emits light of substantially the same color as the introduced light. In the daytime, indoor light is reflected by the half mirror layer, and the line-shaped decorative body has the color of the half mirror as a whole (for example, silver). The linear decorative body of the present invention comprises a base and a light guide, and the light source only needs to be arranged at the end of the light guide. Therefore, the manufacturing cost can be kept as low as possible. Further, by forming the entire body with a soft material, it can be freely deformed. Therefore, even if it is formed linearly, it can be bent to correspond to the shape of the mounting partner. That is, it can be applied to various interior parts as a general-purpose part.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the components constituting the present invention will be described in detail. The base is fixed to the member to be mounted, and its shape is not particularly limited. Preferably, a predetermined portion of the base is provided with a mounting hole. The base may be discontinuous, but from the viewpoint of simultaneously extruding the base and the light guide, the base is preferably continuous in the axial direction of the decorative body (mall). The base can also be formed of the same translucent material as the light guide.

[0007] The light guide section is formed of a translucent material and has a first surface that is exposed when the base is attached to the member to be attached. A half mirror layer is formed on the first surface. A reflection layer is formed entirely or partially on the other surface of the light guide. Since the reflective layer prevents light leakage, it is preferable to form the reflective layer on all surfaces except the first surface of the light guide. The cross-sectional shape of the light guide is not particularly limited, and can be appropriately designed according to the required design properties. In this embodiment, a portion of the base portion that joins the light guide portion is a reflection layer. In this case, the base material is formed of a material having high light reflection efficiency. Examples of the light-transmitting material constituting the light guide portion include synthetic resins such as polycarbonate, acrylic resin, and epoxy resin, and inorganic materials such as glass. The reflective layer can also be formed by printing, vapor deposition, or sputtering using a light-reflective ink (for example, a white ink). Further, a tape having high light reflectance (such as a white tape) may be attached. Further, the reflection surface can be formed by a roughening treatment such as etching, sandblasting, electric discharge machining, or the like.

It is preferable that the base and the light guide are formed of a soft (flexible) organic material. Acrylic resin can be used as the light-transmitting soft material constituting the light guide. Although the material of the base can be arbitrarily selected, it is preferable to use the same or similar material from the viewpoint of adhesiveness to the light guide. However, in order for the base to function as a reflective layer, it is preferable to incorporate a highly reflective filler into the material constituting the base. Examples of such a filler include titanium oxide and mica.
From the viewpoint of improving productivity, it is preferable that the base and the light guide are extruded at the same time. It is also possible to form both separately and then join them. In the embodiment, mounting holes are formed in the base at a predetermined pitch.

The half mirror layer reflects light from the outside,
It transmits light from the light guide. Examples of the metal forming the half mirror layer include a metal such as an aluminum thin film. In order to laminate the half mirror layer on the first surface of the light guide, it is preferable to laminate the half mirror film (metal thin film) to the light guide immediately after extrusion from the viewpoint of productivity. Evaporation, sputtering,
The half mirror layer can be formed by coating or other methods.

A light source is arranged on an end face of the light guide, and light is introduced from the light source in the axial direction of the light guide. The light introduced into the light guide advances while repeating irregular reflection. At this time, the reflection layer promotes irregular reflection of light, and causes light to travel further away from the end face. Therefore, the light guide portion can emit light substantially even up to a position further away from the end face.
It is preferable to arrange light sources on both sides of the light guide in the linear decorative body. A notch may be formed in the light guide, and a light source may be arranged here to introduce light from the light source in the axial direction of the light guide.

As a light source, a bulb or an LED can be used, but an LED is preferably used as the light source. LE
By using D as a light source, a lighting device with high luminous efficiency is configured. Also, since LEDs generate less heat,
The effect of heat on the light guide can be reduced. In addition, LED
Since the lamp has a longer life than the bulb, the life of the lighting device can be extended. The color of the light source can be arbitrarily selected. It is also possible to change the emission color by preparing a plurality of color light sources and controlling them. Red LED, Green LED
And blue LED as one light source, each LE
By controlling the output of D, the light guide can emit light of any color.

[0012]

Next, an embodiment of the present invention will be described. FIG. 1 is a sectional view of a molding 1 according to an embodiment of the present invention. The molding 1 of the embodiment includes a white base 3 and a transparent light guide 5 formed at one end thereof. The top of the light guide 5 is formed in a lens shape, and a silver half mirror layer 7 is formed on the upper surface and the left and right surfaces in FIG. Holes 4 are formed in the base 3 at a predetermined pitch as shown in FIG.

In such a molding 1, the base 3 and the light guide 5 are formed of a soft transparent acrylic resin. Since a white filler (titanium oxide) is blended in the base, both are formed simultaneously by two-color extrusion molding. The half mirror layer 7 is made of a thin film of aluminum and is laminated on the light guide 5 immediately after extrusion.

The extruded molding is cut into a predetermined length, and a mounting hole 4 is formed in the base 3. Further, as shown in FIG. 2, only the base 3 is cut off from the end, and the cap 11 is put on the remaining light guide 5.
An LED (blue or the like) 15 is inserted into the cap 11. Reference numeral 17 denotes a substrate of the LED 15, reference numeral 18 denotes a mounting seat, and reference numerals 20 and 21 denote harnesses for the LED 15. Such a light source device can be attached to the other end of the molding 1.

FIG. 3 shows how the molding 1 is attached to the first trim 31 and the second trim 35 (member to be attached). As shown in FIG. 3, the base 3 of the molding 1 is
Of the first trim 31 is pressed from above onto the step portion 37 of the first trim 35. Reference numeral 33 denotes a screw receiving portion, and the first trim 31 and the second trim 31 are
Is fixed to the trim 35.

When the LED 15 emits light by the electric power supplied through the harnesses 20 and 21, the light is introduced into the light guide 5. The introduced light travels rightward in FIG. 2 while being diffusely reflected by the light guide unit 5. When the light is diffusely reflected, part of the light is emitted from the surface of the light guide portion 5 (the surface other than the portion joined to the base 3: the first surface), and further passes through the half mirror layer 7. In this molding 1, since the base 3 joined to the light guide 5 serves as a reflection surface, diffuse reflection in the light guide 5 is promoted, and light travels to a portion far away from the end. Thereby, even if the mall 1 becomes considerably long, the light guide 5
Can be made to emit light uniformly. In the mall of this embodiment, the light in the room is reflected by the half mirror layer 7 during the daytime (when the LED is not lit), so that the design surface (the first surface of the light guide) has a silver color. On the other hand,
At night (when the blue LED is lit), light from the LED passes through the first surface and the half mirror layer to exhibit blue.

FIG. 4 is a sectional view of a molding 40 according to another embodiment. In the molding 40 of this embodiment, the periphery of the light guide 45 is thinly covered with the material of the base 43, and a half mirror layer 47 is further formed. Here, the light guide 45 and the base 43 are both formed of a soft transparent acrylic resin, and the base 43 is mixed with a light scattering agent (acrylic beads or glass beads). The base 43 has a light-transmitting property as a whole, but at least a portion of the base 43 (the thin portion 44) covering the light guide 45 has a thickness sufficient to transmit light from the light guide 45. (Thickness: 1 to 5 mm). The reason why the thin portion 44 filled with the light scattering agent is provided around the light guide portion 45 is to efficiently extract light to the outside.
In this embodiment, the cross-sectional shape of the light guide 45 is circular.
It can also be substantially rectangular, as in the previous embodiment. The cross-sectional shape of the light guide is not particularly limited. The molding 40 of this embodiment is formed similarly to the molding of the previous embodiment. Further, it is attached to the light source device in the same manner as in the molding of the previous embodiment (see FIG. 2), and is similarly attached to the trim (member to be attached) (see FIG. 3).

FIG. 5 shows a molding 50 according to another embodiment. The same elements as those in the example of FIG. 4 are denoted by the same reference numerals, and the description thereof will be partially omitted. In the molding 50 of this embodiment, the material of the main body of the base portion 53 (the portion to be attached to the attached member) is different from that of the thin portion. For example, the amount of the diffusing agent to be filled in the base main body can be different from that of the thin portion. In this example, the blending amount of the diffusing material was increased to make it substantially opaque. The base material of the base body itself can be different from the thin-walled part. In particular, when the base is made of a material having higher flexibility, the mountability to the member to be mounted is improved. The molding 50 of this embodiment is formed similarly to the molding of the previous embodiment. Further, it is attached to the light source device in the same manner as in the molding of the previous embodiment (see FIG. 2), and is similarly attached to the trim (member to be attached) (see FIG. 3).

The present invention is not limited to the above-described embodiments and examples. Various modifications are included in the present invention without departing from the scope of the claims and within the scope of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a sectional view of a molding according to an embodiment of the present invention.

FIG. 2 shows a linear light source device including a molding and a light source device according to the embodiment.

FIG. 3 is a cross-sectional view showing a mode of attaching a molding to a trim.

FIG. 4 is a sectional view showing a molding according to another embodiment.

FIG. 5 is a sectional view showing a molding according to another embodiment.

[Explanation of symbols]

 1, 40, 50 Mall 3, 43, 53 Base 5, 45 Light guide 7, 47 Half mirror layer 15 LED 49 Reflective layer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Nakano 1 Ochiai Nagahata, Kasuga-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd. Inside Toyoda Gosei Co., Ltd. (72) Inventor Sadao Nada, Ochiai Ogata, 1-figure, Kasuga-machi, Nishi-Kasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd. F term in the company (reference) 3D023 BA01 BB01 BB08 BD03 BE06 BE17 BE24

Claims (6)

[Claims] 1. A half-mirror layer is formed on a first surface of the light guide, which has a base for attachment and a light guide, and is exposed when the base is attached to a member to be attached. A linear decorative body, wherein a reflective layer is formed on another surface of the light guide. 2. The line-shaped decorative body according to claim 1, wherein the base and the light guide are formed of a flexible material. 3. The line-shaped decorative body according to claim 1, wherein the base portion joined to the light guide portion serves as the reflection layer. 4. The base and the light guide are obtained by simultaneously extruding an organic material, and the half mirror layer is formed by laminating a half mirror film on the light guide immediately after being extruded. The line-shaped decorative body according to claim 2, wherein the line-shaped decorative body is obtained by the above-described method. 5. A linear lighting device comprising: the linear decorative body according to claim 1; and means for introducing light into the light guide section from an end thereof. apparatus. 6. The linear lighting device according to claim 5, wherein said means for introducing light comprises an LED light source.