JP2000318396A - Decorative illumination - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce costs and improve usability by a method wherein a light guide member integrally formed from a resin is provided, and the member is embedded in an embedding member, at least a light inlet end and a light outlet end of the light guide member being exposed. SOLUTION: A decorative illumination system has a decorative illumination apparatus 1 wherein a light guide member 2 is embedded in an embedding member 10, and an end 12 of a light guide rod 11 is provided so as to contact a light inlet end 3 of the member 2 of the apparatus 1 through a joint 14. A beam of light enters the other end 13 of the rod 11 from a lamp 16 provided in a light guide box 15. The beam of light from the lamp 16 is guided from the rod 11 to the member 2 of the apparatus 1 and leaves a light outlet end 4 of the member 2. The member 2 is embedded in the member 10, a branch part 6a thereof being exposed. The member 10 is laid on a floor, while the end 4 of the member 2 is directed upward. Thus, the beam of light entering the member 2 from the lamp 16 passes through the member 10 and leaves nine light guide parts 5e-5m whose ends are exposed on the outer surface of the member 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light decoration device which is used as a structure or an ornament such as a wall or a floor and uses light in a decorative manner.

[0002]

2. Description of the Related Art As a decorative device using light decoratively,
The configuration shown in FIG. 15 is known. FIG. 15 (a)
FIG. 15B is a front view showing the light decoration device, and FIG. 15B is a plan view thereof.

[0003] This light decoration device includes a large number of optical fibers 100 inside a plate 101 made of a material such as concrete.
One end (light exit side) 100b of the optical fiber 100 is embedded, and the other end (light entrance side) 100a of the optical fiber 100 is
1 is arranged outside.

[0004]

However, in the above-mentioned light decoration device, since an expensive optical fiber is used, the cost is high. In addition, it is necessary to bundle a large number of optical fibers using a band 102 (see FIG. 15) so that light is incident on the optical fibers from a single light source, and to align the end faces of the light incident side ends 100a. Was also not so good because of the demand.

The present invention has been made to solve such problems of the prior art, and has as its object to provide a light decoration device which is inexpensive and has excellent handleability.

[0006]

The light decoration device of the present invention has a light guide member made of resin integrally formed as a whole, and the light guide member has at least a light incident end and a light output end. And is embedded in the embedded member.

[0007] In this configuration, the light guide member is formed integrally, and it is not necessary to bundle it like a conventional optical fiber, and it is excellent in handleability. In addition, since the light guide member is formed using a resin with a low material cost, and when the resin is used, it can be manufactured by integral molding suitable for mass production. Can be manufactured.

In the light decoration device of the present invention, the light guide member is branched at one or more points on the way from the light incident end to the light output end to increase the number of light output ends from the light incident end. The formed configuration can be adopted.

In the light decoration device of the present invention, at least one of the optical path length from the light incident end to each light emitting end and the number of branch portions from the light incident end to each light emitting end in the light guide member are adjusted. Thus, a configuration having a portion that adjusts the difference in brightness at each light emitting end can be adopted.

In this configuration, a light path having a long optical path from a light incident end to each light output end is generally darker than a light path having a short light path, and a branch portion from the light incident end to each light output end. Since the light path with a large number of light rays is generally darker than the light path with a small number of light rays, by adjusting one or both of the light path and the number of branches, the difference in brightness at each light emitting end is clarified or aligned. be able to.

In the light decoration device of the present invention, the light guide member may have a structure in which a cross-sectional area of each light guide portion is adjusted to adjust a difference in brightness at each light output end.

[0012] In this configuration, the cross section of the light guide portion is adjusted because the light density of the larger and smaller light guide portions is lower than that of the smaller one. Thereby, the difference in brightness at each light emitting end can be adjusted. Here, means for adjusting the cross-sectional area of the light guide section includes providing a constriction, a stop, or the like in the middle of the light guide section.

In the light decoration device of the present invention, a reflecting means is provided at a position in the light guide member that changes the light traveling direction, and the light traveling direction can be changed in a direction along the light guide member by the reflecting means. can do.

In this configuration, since the light traveling direction can be changed by the reflection means, the light can travel in the direction along the light guide member by adjusting the reflection direction of the reflection means. . Thereby, light loss at a portion where the light traveling direction changes can be reduced.

In the light decoration device of the present invention, a part or the whole of the light emitting end may be connected to a second light guide member formed in a predetermined pattern.

In this configuration, the buried member can represent a bright portion of a predetermined pattern.

In the light decoration device of the present invention, the light guide member may be integrally formed with a light guide portion having a predetermined pattern at a light emitting end thereof.

According to this configuration, the handleability can be improved as compared with the case where the second light guide member is used.
Further, if a portion near the light emitting end formed in a predetermined pattern is formed in a state similar to the shape of the light emitting end, the second
The light density at the light emitting end can be made more uniform than when the light guide member is used.

[0019]

Embodiments of the present invention will be specifically described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view showing a light decoration system provided with a light decoration device according to a first embodiment. This light decoration system has a light decoration device 1 in which a light guide member 2 is embedded in an embedding member 10, and the light guide end 11 of the light guide member 11 of the light decoration member 2 of the light decoration device 1 is provided. One end 12 is provided so as to be in contact with the other via a joint 14, and light from a light source, for example, a lamp 16 built in a light source box 15 is incident on the other end 13 of the light guide rod 11. Light from the lamp 16 is guided from the light guide rod 11 to the light guide member 2 of the light decoration device 1, and is emitted to the outside from the light emitting end 4 of the light guide member 2. It is effective to wind a reflection tape or the like around the outside of the light guide bar 11 in order to reduce the amount of light leaking to the outside as much as possible.

The light guide member 2 is configured as shown in FIGS. 1, 2 (a) and 2 (b). FIG. 2 (a)
Is a plan view of the light guide member 2, and FIG. 2B is a front view thereof.

The light guide member 2 is made of resin integrally molded with a mold such as a mold, and is made of, for example, an acrylic resin. The structure has a light guide section 5a on the light incident end 3 side, and the other end side of the light guide section 5a is branched into three via a branch section 6a, and these three light guide sections 5b, 5c are provided. , 5d are further branched into three. Specifically, the light guide 5b is divided into three light guides 5e, 5f,
5g, the light guide 5c is branched into three light guides 5h, 5i, and 5j via the branch 6c, and the light guide 5d is divided into three light guides 5k, 5l through the branch 6d. It is branched to 5m.

Six light guide portions 5 located outside in plan view
e, bent part 7 in the middle of 5g, 5h, 5j, 5k, 5m
e, 7g, 7h, 7j, 7k, 7m (see FIG. 1), and the nine light guide portions 5i to 5q located on the light emitting end 4 side of the light guide member 2 all face in the same direction. It has become. Further, the light emitting ends 4 of the nine light guides 5 e to 5 m are arranged substantially identical to the outer surface of the embedded member 10.

As shown in FIG. 3, the light guide member 2 is buried in a buried member 10 (shown by a two-dot chain line) with the branch portion 6a exposed. The embedded member 10 is used as a floor material made of a material such as concrete, for example, and is laid on the floor with the light emitting end 4 of the light guide member 2 facing upward. Therefore, the light guide member 2 is
Incident on the embedded member 10, the nine light guide portions 5 e to 9 e, whose end surfaces are exposed on the outer surface of the embedded member 10.
Emitted from 5m.

The light decoration device according to the present embodiment having the above-described structure can be made inexpensive because the light guide member 2 made of resin is used, and the light decoration member 2 is not bundled as in the related art. However, since it is an integrated structure, that is, it is an integrally molded product, there is an effect that the handleability is excellent. Also, in the light decoration device according to the present embodiment, the light guide portions 5e located at the four corners, where the optical path length from the light incident end 3 to the light emitting end 4 is long,
At 5g, 5k, and 5m, the emitted light is dark, and the emitted light is the brightest at the light guide section 5i located at the center where the optical path length is short.

The buried member 10 is buried in the buried member 10 by thickening the buried member 10 as shown by a dashed line in FIG.
When the light guide member 2 is buried in the buried member 10, that is, when all of the branch portions are buried in the buried member, the number of protrusions can be reduced and handleability can be further improved.
Light leaking from the buried member 10 can be confined,
It is possible to increase the amount of light emitted from the light emitting end 4 of the light guide member 2.

In the first embodiment, the structure of the light guide member is divided into three parts on the way and then further divided into three parts. However, the present invention is not limited to this. For example, it is also possible to adopt a configuration in which one or two or more branch portions are provided which branch into two or more in the middle and then further branch into two or more, and then further branch into two or more on the light emission side. Further, the portion to be buried in the buried member may be in any buried state as long as at least the light emitting end is buried in the buried member. (Embodiment 2) In the light decoration device of Embodiment 1 described above, after the light guide member is branched at the light incident side branch portion, it is further branched at the branch portion located at a position further from the light emitting end. That is, the depth position of the branch portion is made different in the thickness direction of the embedded member.

On the other hand, the second embodiment is a case where the position of the branch portion is the same depth position in the thickness direction of the embedded member.

FIG. 4 is a front sectional view (a sectional view taken along line IV-IV of FIG. 5) showing the light decoration device according to the second embodiment, and FIG. 5 is a plan view thereof. Note that in the present and following embodiments, a light guide portion having a light guide portion that is branched at a plurality of points in the straight light guide portion will be referred to as a light guide branch line.

This light decoration device includes a light guide member 21 in which a light incident end 22 is exposed from a buried member 20. The light guide member 21 is an integrally molded product made of, for example, an acrylic resin, and extends along the wide surface of the embedded member 20 at a branch portion 24a on the other end side of the light guide portion 23a having a light incident end 22 at one end. 5 light guide portions 23b in the horizontal direction of FIG.
Light guide branch line 26 having 23c, 23d, 23e, 23f
a, and the light guide portion 23b has four light guide portions 23b-1, 23b- in the vertical direction in FIG.
A light guide branch line 26b having 2, 23b-3, and 23b-4 is provided.

The light guide 23c has four light guides 23c-1, 2c in the vertical direction in FIG.
Light guide branch line 2 having 3c-2, 23c-3, and 23c-4
6c is provided. The light guide 23d has four light guides 23 in the vertical direction in FIG.
A light guide branch line 26d having d-1, 23d-2, 23d-3, and 23d-4 is provided. Also, the light guide section 23e
In FIG. 5, four light guides 23e-1, 23e-2, 23e-3, and 23e- are vertically arranged in FIG.
4 is provided. The light guide 23f has four light guides 23f-1, 23f-2, and 23f- in the vertical direction in FIG.
A light guide branch line 26f having 3, 23f-4 is provided. The end faces of the 25 light guides on the light output side are the light output ends 2.
5 (see FIG. 4).

In the second embodiment as well, the same effects as those of the first embodiment can be obtained, and in addition, each of the light guide branch lines 26a to 26a can be obtained.
Since 26f has a configuration extending in the horizontal direction along the wide surface of the embedded member 20, the depth of the embedded member 20 can be reduced. (Embodiment 3) Embodiment 3 is a case where the difference in the amount of light emitted from the light emitting end of the light guide member, that is, the difference in brightness is uniformed.

FIG. 6 is a front sectional view showing a light decoration device according to the third embodiment. This light decoration device has a light guide member 12 partially embedded in the embedded member 10. The light guide member 12 is an integrally molded product made of, for example, an acrylic resin, and the light guide portions 12b and 12c branched from the light guide portion 12a on the incident side via the branch portion 13a include four light guide portions. Light guide branch line 14 having 12d, 12e, 12f, 12g
Is connected to.

It should be noted that 13b, 13c, 13d,
Reference numeral 13e denotes a branch portion, the branch portion 13b is provided between the light guide portions 12d and 12e, and the branch portion 13c is provided between the light guide portions 12f and 12g. Further, the light guide portions 12e and 1
There is no branch between 2f.

For this reason, the four light guide sections 12d, 12e,
Light from the two light guides 12b and 12c is guided to 12f and 12g, respectively. Therefore, since the light from the light guides 12b and 12c is incident on the inner light guides 12e and 12f, the amount of the emitted light is
The light amount becomes almost the same as the amount of light emitted from the outer light guide portions 12d and 12g into which light from one of the light guides b and 12c is mainly incident.

Therefore, in the case of the third embodiment, it is possible to equalize the amount of light emitted from the light emitting end of the light guide member 12.

In the third embodiment, the inclination of the light guides 12b and 12c on the exit side in the branching portion 13a is set to an obtuse angle (greater than 90 ° and smaller than 180 °) with respect to the light guide 12a on the incident side. Angle range). In the case of this configuration, light loss can be reduced when light passing through the light guide section 12a is transmitted to the light guide sections 12b and 12c, and thus the amount of emitted light can be increased. (Embodiment 4) As in Embodiment 3,
This is the case where the difference in the amount of light emitted from the light emitting end of the light guide member, that is, the difference in brightness is uniformed.

FIG. 7A is a cross-sectional view showing a light decoration device according to the fourth embodiment, and FIGS. 7B to 7D are cross-sectional views (enlarged views) showing a reflection means forming portion.

In this light decoration device, the light incident portion 31a
The reflecting means 39a, 39b, 39c are provided on the light guide member 31 buried by the burying member 30 except for (FIG. 7).
(See (b) to (d)).

The light guide member 31 is an integrally molded product made of, for example, an acrylic resin, and has a light incident side light guide portion 31a.
The light is branched into two light guide branch lines 32 and 33 at the upper branching portion 38 of FIG.
A letter-shaped cut portion 38a is formed, and a reflective film 39a is formed on the outer surface thereof. The reflection film 39a is formed so as to reflect light from the light incident side light guide 31a in directions along the light guide branches 32 and 33, respectively.

The light guide branch line 32 includes two light guide portions 34,
As shown in FIG. 7 (c), the branch portion 32A is formed with a concave portion 32a recessed in a wedge shape, and a reflective film 39b is formed on the outer surface thereof. The light guide branch line 33 has two light guide portions 36 and 37, and a branch portion 33A of the light guide branch line 33A also has a concave portion 33a formed in a wedge shape as shown in FIG.
Is formed, and a reflective film 39b is formed on the outer surface thereof. These reflection films 39b are formed so as to reflect light passing through the light guide branch lines 32, 33 toward the light guide portions 34, 36.

The bent portion of the light guide 35 is shown in FIG.
As shown in FIG. 7, a broken line portion is omitted, and a reflective film 39c is formed on the outer surface of the missing portion 35a. Similarly, as shown in FIG. 7D, the bent portion of the light guide portion 37 has a broken-line portion missing, and a reflective film 39c is formed on the outer surface of the missing portion 37a. These reflection films 39c are provided in the light guide portions 35, 3
7 is formed so as to reflect the light that has passed through toward the light emitting end. The reflection films 39a, 39b, 39c
For example, a film of aluminum or the like can be used.

Accordingly, in the case of the light decoration device according to the fourth embodiment, since the light incident from the light incident portion 31a can be reflected in a desired direction by the reflection films 39a to 39c, the amount of reflected light can be controlled. Reflective films 39a to 39
If the size and direction of c are adjusted, each light guide section 34, 3
The amounts of light emitted from 5, 36, and 37 can be made uniform.
Further, the light emission efficiency can be improved. (Embodiment 5) Embodiment 5 is a case where the difference in the amount of light emitted from the light emitting end of the light guide member, that is, the difference in brightness, is the same as in Embodiments 3 and 4.

FIG. 8 is a sectional view showing a light decoration device according to the fifth embodiment. In this light decoration device, the embedded member 40
And a light guide member 41 buried therein. This light guide member 41
Is an integrally molded product made of, for example, an acrylic resin, and has two light guide branch lines 42 and 43 branched from the light incident side light guide portion 41a. The light guide branch line 42 is provided with light guide portions 42a, 42b, 42c sequentially branched in the light traveling direction, and the light guide branch line 43 is provided with light guide portions 43a, 43b, sequentially branched in the light travel direction. 43c is provided. The cross sections of the light guides 42a, 42b, and 42c are smaller as they are closer to the light incident side light guide 41a, and are larger as they are farther. Also, the light guides 43a, 43
The same applies to b and 43c, with the cross section being smaller nearer to the light incident side light guide portion 41a and larger as being farther away.

Therefore, in the light decoration device according to the fifth embodiment, the light incident from the light incident side light guide portion 41a is
The light is branched into two, one is transmitted through the light guide branch line 42, and the other light is transmitted through the light guide branch line 43. At that time, each light guide part 42a, 42b,
Light corresponding to the cross section is branched to 42c, 43a, 43b, and 43c. That is, the light guides 42a and 43a having a small area receive a small amount of light, and the light guide 4 having a medium area.
A medium amount of light is transmitted to 2b and 43b, and a large amount of light is transmitted to light guide portions 42c and 43c having large areas. Therefore, in each of the light guides 42a to 43c, light with a uniform light amount is transmitted and emitted.

In FIG. 8, the six light guides 42a to 43 are provided.
c, the cross section is constant in the length direction. However, as shown in FIG. 9 (hatching of the light guide member is omitted), the light guide portions 42a, 42b, 42c,
Even if the narrowing portions 44a, 44b, 45a, and 45b are provided in the light guide portions 42a, 42b, 43a, and 43b that are closer to the light incident side light guide portion 41a among the 43a, 43b, and 43c, the cross-sectional area of the portions may be changed. Good. Further, a similar narrowing portion may be provided in the middle of all the light guide portions or at the light emitting side end. Even in this case, the same effect as that of FIG. 8 can be obtained. (Embodiment 6) Embodiment 6 is a case where the difference in the amount of light emitted from the light emitting end of the light guide member, that is, the difference in brightness is made clearer.

FIG. 10 is a cross-sectional view showing the light decoration device according to the sixth embodiment (hatching of the embedded member is omitted). The light decoration device of the sixth embodiment includes a light guide member 51 embedded in an embedded member 50, and the light guide member 51 is an integrally molded product made of, for example, an acrylic resin. In addition, the light guide member 51 is configured such that the light incident from the light incident side
It is configured to be guided to a light guide branch line 52 having two light guide portions 53a, 53b, 53c, and 53d, and a branch portion 54 is disposed between the light guide portions 53a and 53b.

Accordingly, in the case of the light decoration device of the sixth embodiment, the light emitted from the light guides 53a and 53b is bright, the light emitted from the light guide 53c is slightly dark, and the light emitted from the light guide 53d. The resulting light is darker. That is, the difference in brightness can be made clearer (emphasized). For example,
As shown by the two-dot chain line, when the light incident side light guide section 51a is arranged at the center of the light guide branch line 52, the light quantity decreases gradually from the center to the end of the light guide branch line 52. However, since the distance from the center to the end is relatively short, the brightness difference is small, but on the other hand, the light incident side light guide 51a is located on the corner side of the light guide branch line 52 as in the sixth embodiment. If you do,
The distance from the branch portion 54 to the corners on both sides greatly changes, and the light guide portion 53d on the long side and the light guide portion 53a on the short side have a long distance.
In this case, the difference in the amount of emitted light increases, and the difference in the amount of light emitted from the light emitting end of the light guide member 51, that is, the difference in brightness can be made clearer. (Embodiment 7) In Embodiments 1 to 6, each of the branch portions is branched into about two to four branches.
Is a case where the light guide member is branched into a large number at the branch portion.

FIG. 11A is a front view showing a branch portion of the light guide member, and FIG. 11B is a plan view thereof. The light guide member 61 is an integrally molded product made of, for example, an acrylic resin. The light incident side light guide 61a has a cross section on the branch portion 62 side that is thicker than other portions, and has a smaller diameter from the thick portion. A large number of light guides, in this example, nine light guides 61b, 61c,
61d, 61e, 61f, 61g, 61h, and 61i are connected.

In the case of this configuration, one branch portion 6
The light can be split into two to nine lights.

FIG. 11 is an example of the seventh embodiment, and more light guides may be connected or a smaller number of light guides may be connected. (Embodiment 8) Embodiment 8 is a case where a predetermined pattern is formed at the light emitting end of the light guide member.

FIG. 12A is a perspective view showing a light guide member used in a light decoration device (embedded member omitted) according to the eighth embodiment. The light guide member 71 is an integrally molded product made of, for example, an acrylic resin, and is formed by branching from the light incident side light guide portion 71a into two light guide portions 71b and 71c. The light emitting end of the light guide member 71 is connected to two portions of a second light guide member 72 formed in an “A” shape.

Therefore, according to the eighth embodiment, the letter "A" can be clearly displayed even in darkness.

FIG. 12B shows a modification of the eighth embodiment, in which the light guide section 71 branched from the light incident side light guide section 71a.
b, 71c to the two end faces 72c, 72d of the second light guide member 72.
And is formed in a state of being laid down as a whole.

In the eighth embodiment, all of the light emitting ends (two in the above example) are connected to the second light guide member 72. However, the present invention is not limited to this. A configuration in which a part is connected to the second light guide member 72 and the remaining part is exposed to the surface of the buried member without being connected to anywhere and is lit in a dot-like manner may be adopted.

In the present invention, the second light guide member may be formed integrally with the light guide member. in this case,
As shown in FIG. 13 (a), "A" is designed to be proportionally enlarged toward the upper end of the light incident side light guide 73a.
As shown in FIG. 13 (b) (front view) and FIG. 13 (c) (right side cross-sectional view), the configuration in which the character pattern portion 73b is integrally formed, The cross section may be changed to an arbitrary size, and the light emitting end may be integrally formed so that each portion becomes an “A” -shaped pattern portion 74b having a predetermined width.

Further, as a form to be embedded in the embedded member,
As shown in FIG. 14A, the upper surface of the “A” -shaped pattern portion 73b (or 74b) of the light guide member and the upper surface of the buried member 75 are made to coincide with each other, or as shown in FIG. The upper surface of the “A” -shaped pattern portion 73 b (or 74 b) may be configured to protrude from the upper surface of the embedded member 75.

In the light decoration device of the present invention,
Instead of the pattern of the letter "A", other kanji, hiragana, katakana, roman alphabet, alphabet, Greek letter, etc. character pattern, round, square, triangle, etc., or star, moon or A pattern such as a landscape, a fish swimming in the water, or the like may be used.

Although the light guide member in each of the first to eighth embodiments is made of an acrylic resin, the present invention is not limited to this, and the light guide member is formed using another resin. Can be used.

Further, the present invention is not limited to an entirely integrally formed product, but may use a partially formed product connected or assembled.

In the above description, the reflecting means is partially provided at the position (bend or branch) where the light traveling direction of the light guide member is changed to improve the light emission efficiency. Not exclusively. For example, for all the light guide members described in the first to eighth embodiments, a light-shielding film that can suppress light leakage so as to cover the entire outer surface (excluding the light incident end and the light emission end), aluminum, or the like is used. Reflective film may be provided.
In particular, a light-shielding film or a reflective film may be provided so as to cover an outer surface of a portion which is exposed from the embedded member of the light guide member and in which light leakage easily occurs. However, when a light-shielding film is provided, the light-shielding film may be used in combination with the reflection means. As the light shielding film, it is preferable to use a film formed in a tube shape in advance in terms of cost. As the reflection film, a tube or foil made of aluminum or the like may be used, or aluminum or the like may be deposited.

Further, in the above-described first to eighth embodiments, the case where the light decoration device of the present invention is used as a floor material is described. However, the light decoration device of the present invention is not limited to this, and it is not limited thereto. It can also be used as a structure or an ornament. In that case, as the buried member, depending on the place of use, for example, when used for the ceiling, it is preferable to use a lightweight material such as styrene foam, and when used for a wall, a resin or the like whose pattern can be expressed on the outer surface, When used for an ornament, it is preferable to use wood, resin, or the like.

In the above-described embodiment, the light guide member is one.
Although the configuration has two light incident ends, the present invention is not limited to this, and may have a configuration having two or more light incident ends. Further, it is a matter of course that the present invention may have a configuration in which two or more light guide members are provided in one embedded member.

[0063]

As described above in detail, in the case of the present invention, the light guide member is formed integrally, so that it is not necessary to bundle the light guide member as in the conventional optical fiber, and the handleability can be improved. In addition, the light guide member is formed using a resin with low material cost. When the resin is used, the light guide member can be manufactured by integral molding suitable for mass production. It is possible to provide a light decoration device which can easily cope with a light guide member), is low in cost, and is excellent in handleability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a light decoration system including a light decoration device according to a first embodiment of the present invention.

FIG. 2A is a plan view showing a light guide member provided in the light decoration device according to the first embodiment of the present invention, and FIG. 2B is a front view thereof.

FIG. 3 is a front view showing another embodiment of the light decoration device according to the first embodiment of the present invention.

FIG. 4 is a front cross-sectional view (a cross-sectional view taken along line IV-IV in FIG. 5) illustrating the light decoration device according to the second embodiment of the present invention.

FIG. 5 is a plan view showing a light decoration device according to a second embodiment of the present invention.

FIG. 6 is a front sectional view showing a light decoration device according to a third embodiment of the present invention.

FIG. 7A is a cross-sectional view illustrating a light decoration device according to a fourth embodiment of the present invention, and FIGS. 7B to 7D are cross-sectional views (enlarged views) illustrating a reflection unit forming portion.

FIG. 8 is a sectional view showing a light decoration device according to a fifth embodiment of the present invention.

FIG. 9 is a cross-sectional view showing another light decoration device according to Embodiment 5 of the present invention (hatching of the light guide member is omitted).

FIG. 10 is a cross-sectional view (a hatching of a buried member is omitted) showing a light decoration device according to a sixth embodiment of the present invention.

11A is a front view showing a branch portion of a light guide member applied to the light decoration device of the present invention, and FIG. 11B is a plan view thereof.

FIG. 12A is a perspective view showing a light guide member used for a light decoration device (omission of an embedded member) according to Embodiment 8 of the present invention;
(B) is a perspective view showing a modification of Embodiment 8 of the present invention.

FIG. 13A is a perspective view showing a light guide member used in still another light decoration device according to the eighth embodiment of the present invention (the embedded member is omitted), and FIG. 13B is a view showing the light guide member according to the eighth embodiment of the present invention. FIG. 9 is a perspective view showing a light guide member used in still another light decoration device (an embedded member is omitted), and (c) is a cross-sectional view of (b).

14A and 14B are perspective views each showing a relationship between a light emitting end of a light guide member and a buried member in the light decoration device of the present invention.

FIG. 15A is a front view showing a conventional light decoration device,
(B) is a plan view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light decoration device 2, 21 Light guide member 3, 22 Light incidence end 4 Light emission end 5a, 5b, 5c, 5d, 5e, 5f, 5g Light guide 5h, 5i, 5j, 5k, 5l, 5m Light guide 6a, 6b, 6c, 6d Branch 7e, 7g, 7h, 7j, 7k, 7m Bent 10, 20 Embedded member

Claims (7)

[Claims] 1. A light guide member entirely made of resin integrally formed, and the light guide member is embedded in a buried member with at least a light incident end and a light output end exposed. Light decoration device characterized by the above-mentioned. 2. The method according to claim 1, wherein the light guide member is formed such that the light guide member is branched at one or more points on the way from the light incident end to the light output end so that the number of light output ends is larger than that of the light incident end. The light decoration device according to claim 1, wherein: 3. The light guide member according to claim 1, wherein at least one of an optical path length from the light incident end to each light emitting end and a number of branch portions from the light incident end to each light emitting end is adjusted. The light decoration device according to claim 1, further comprising a portion that adjusts a difference in brightness at an end. 4. The light guide member according to claim 1, further comprising a portion that adjusts a cross-sectional area of each light guide portion of the light guide member to adjust a light-dark difference at each light output end. The light decoration device according to item 1. 5. The light guide member is provided with a reflection means at a position where the light traveling direction is changed, and the light traveling direction can be changed in a direction along the light guide member by the reflection means. The light decoration device according to any one of claims 1 to 4, wherein 6. The light decoration according to claim 1, wherein a part or the whole of the light emitting end is connected to a second light guide member formed in a predetermined pattern. apparatus. 7. The light decoration device according to claim 1, wherein the light guide member is integrally formed with a light guide portion having a predetermined pattern at a light emitting end thereof.