JP6970979B2 - Luminous display device - Google Patents

Description

The present invention relates to a light emitting display device.

As a light emitting display device in which a side light leakage type optical fiber is woven, the one described in Patent Document 1 is known.

In this conventional example, the light emitting display device is composed of an optical fiber woven fabric in which wefts and warp yarns including an optical fiber are woven, and an optical irradiating device that irradiates the optical fiber of the optical fiber woven fabric with light.

In order to introduce the irradiation light from the light irradiation device into the optical fiber, the optical fiber is converged into a bundle without sewing at the end of the woven fabric, and the light irradiation device is connected to the converged end.

Japanese Unexamined Patent Publication No. 2016-37688

However, in the above-mentioned conventional example, since each optical fiber is bundled at the irradiation end, almost the entire optical fiber is bent at a small bending angle, so that light leakage at the curved portion becomes large and the amount of light emitted from the display portion is large. There is a problem that it becomes smaller and darker.

The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide a light emitting display device capable of increasing the amount of light emitted from a display unit.

According to the present invention, the above object is
An optical fiber woven fabric 2 formed by weaving a plurality of side light leakage type optical fibers as wefts and having one end edge along the warp as an incident end edge 1.
A woven fabric holding portion 3 formed by joining front and back covers 3a and 3b having plug protrusions 16a and 16b projecting forward from the base portions 15a and 15b and attached to an incident edge portion of the optical fiber woven fabric 2. ,
It has a light source holding portion 5 that can be connected to the woven fabric holding portion 3 and holds a light emitting light source 4 incident on the incident edge 1 of the optical fiber woven fabric 2 in a connected state.
The front and back covers 3a and 3b are formed with woven fabric accommodating recesses 17a and 17b having a width dimension substantially matching the width dimension of the optical fiber woven fabric 2 and being opened at the front and rear ends.
The woven fabric holding portion 3 is formed by joining one of the front and back covers 3a and 3b in which the front end portion of the fiber woven fabric 2 is held in the woven fabric accommodating recesses 17a and 17b by superimposing the other cover in the front and back directions.
Further, the light source holding portion 5 is provided with a socket opening 13 into which the plug portion 18 formed by superimposing the plug protrusions 16a and 16b of the front and back covers 3a and 3b of the woven fabric holding portion 3 is fitted. Achieved by providing a display device.

The light emitting display device has a woven fabric holding unit 3 for holding the optical fiber woven fabric 2 on which the display unit 8 made of appropriate characters, patterns, etc. is formed, and a light source holding unit 5 connected to the woven fabric holding unit 3. The optical fiber woven fabric 2 is held by the woven fabric holding portion 3 in a direction orthogonal to the weft, that is, one side edge along the warp is an incident edge 1 to which the irradiation light from the light emitting light source 4 is guided. ..

The light source holding portion 5 holds a light emitting light source 4 that irradiates the incident edge 1 of the optical fiber woven fabric 2 connected to the woven fabric holding portion 3, and the irradiation light of the light emitting light source 4 is a weft on the optical fiber woven fabric 2. It is incident from the incident end of the optical fiber woven as.

In the present invention in which the incident ends of the optical fibers of the optical fiber fabric 2 are held in parallel with the fabric holding portion 3 without being bundled, light leakage due to excessive bending of the optical fiber does not occur, and the amount of light emitted from the display unit 8 is increased. be able to.

Further, since the optical fiber woven fabric 2 is held by the woven fabric holding portion 3 in the state of the woven fabric, the incident ends of the optical fibers are aligned and arranged, so that the incident efficiency changes due to the disturbance in the direction of the incident ends. In addition to making it possible to equalize the incident efficiency in all optical fibers, it is not necessary to form a non-sewn portion at the end of the optical fiber woven fabric 2, so that the manufacturing efficiency is also improved.

The light emitting light source 4 may be single or plural as long as it can irradiate the incident edge 1 of the optical fiber fabric 2, but a plurality of light emitting light sources 4 may be used along the incident edge 1 of the optical fiber fabric 2. When they are held in parallel, the amount of incident light on each optical fiber can be increased, and the illuminance of the display unit 8 can be increased.
When a plurality of light emitting light sources 4 are used, the display unit 8 can be issued in a band shape by arranging the issuing light sources 4 that develop different colors.

Further, a plano-convex cylindrical lens 6 having a length substantially equal to the widthwise dimension of the optical fiber fabric 2 is emitted between the light source 4 of the light source holding portion 5 and the incident edge 1 of the optical fiber fabric 2. When the light is directed toward the light source 4 and arranged in a posture in which the longitudinal direction matches the parallel direction of the optical fiber, the emitted light from each light emitting light source 4 is collected in a straight line, and the incident end row of the optical fiber is drawn on this straight line. When the position is set, the light receiving efficiency of the optical fiber is improved.

Moreover,
The light emitting light source 4 is arranged at a position where the optical axis intersects the line length direction of the optical fiber at a predetermined angle, and is arranged.
An optical path changing optical element 7 for changing the optical path of the irradiation light from the light emitting light source 4 in the line length direction of the optical fiber is arranged between the light emitting light source 4 and the incident edge of the optical fiber fabric 2. You can also do it.

Further, if a multicolor light emitting diode is used for the light emitting light source 4 and the light emitting color is controlled by an appropriate controller, the color of the display unit 8 can be variously changed.

According to the present invention, it is possible to reduce the amount of light leakage at the time of guiding light to the optical fiber and increase the amount of light emitted from the display unit.

It is a front view which shows this invention. It is a figure which shows the woven fabric holding part and the light source holding part, (a) is the figure before connection, (b) is the figure which shows the connection state. It is a figure which shows the light source holding part, (a) is the figure which shows the front and back cases before connection, (b) is the 3B-3B line sectional view of (a), (c) is the state which the front and back cases are connected (a). It is a cross-sectional view taken along the line 3C-3C. It is a figure which shows the woven fabric holding part, (a) is the figure which shows the front and back cases before connection, (b) is the 4B-4B line sectional view of (a), (c) is the 4C-4C line sectional view of (a). , (D) are 4D-4D line cross-sectional views of (a). In the cross-sectional view of the woven fabric holding portion, (a) is a cross-sectional view taken along the line 4C-4C of FIG. 4 (a) with the front and back cases connected, and (b) is 4B of FIG. -4B line sectional view. It is a cross-sectional view which shows the connection state of a woven fabric holding part and a light source holding part, (a) is the 6A-6A line sectional drawing of FIG. 2 (b), (b) is the 6B-6B line sectional drawing of FIG. Is. It is a figure which shows the other embodiment of this invention, (a) is the figure which shows by removing the front case of the connection state of the textile holding part and the light source holding part, (b) is the figure which corresponds to FIG. 6 (b). Is. It is a figure which shows still another embodiment of this invention.

As shown in FIGS. 1 and 2, the light emitting display device holds the optical fiber woven fabric 2, the woven fabric holding portion 3 for holding the optical fiber woven fabric 2, and the light emitting light source 4 described later, and is connected to the woven fabric holding portion 3. In this state, the optical fiber woven fabric 2 has a light source holding portion 5 that guides the irradiation light from the light emitting light source 4 to the optical fiber woven fabric 2.

The optical fiber woven fabric 2 is formed by weaving a side light leakage type optical fiber and a normal yarn parallel thereto as a weft, and weaving a normal yarn orthogonal to these as a warp in a woven state, and appropriately covering the optical fiber with the ordinary yarn. The display unit 8 is formed by exposing a part of the optical fiber so that the characters “TOKYO” and the like are formed, for example, as shown in the illustrated example.

As shown in FIG. 3, the light source holding portion 5 is formed by joining the front cover 5a and the back cover 5b so as to overlap each other in the front and back directions. In order to determine the polymerization position, the front and back covers 5a and 5b are each provided with a positioning boss 5c and a positioning hole 5d into which the positioning boss 5c is fitted.

Further, a connecting support portion 5e is provided at one end (left end) of the front cover 5a and the other end (right end) of the back cover 5b, and each connecting support portion 5e is connected to the woven fabric holding portion 3. A connecting hole 5f used for connection is opened.

Further, plate fitting grooves 9 are recessed at opposite positions in the front end edges of the front and back covers 5a and 5b (in the present specification, the left side in FIG. 1 is referred to as "front" and the right side is referred to as "rear"). The light source holding plate 10 is fixed so that the upper and lower edges are fitted into the respective plate fitting grooves 9 in the polymerized state. The light source holding plate 10 is provided with a light source holding hole 10a in a penetrating manner, and a bullet-shaped light emitting diode as a light emitting light source 4 is inserted and fixed in each light source holding hole 10a.

When a surface mount type LED is used as the light source 4, the light source holding plate 10 can be formed of a mounting substrate.

Further, positioning protrusions 11 for positioning the bullet-shaped light emitting diode are projected from the front end edges of the front and back covers 5a and 5b at predetermined intervals.

Further, a socket recess 12 is recessed in the rear end edges of the front and back covers 5a and 5b, and as shown in FIG. 3C, the light emitting light source 4 is connected to the front and back covers 5a and 5b in the front and back directions. A socket opening 13 facing the surface is formed.

As shown in FIG. 1, a controller unit 14 including a power supply 14a and a control unit 14b is connected to the light source holding unit 5 formed as described above, and is joined to the lead 4a of the light emitting diode. In this example, a multicolor light emitting diode is used for the light emitting light source 4, and the light emitting color can be changed, for example, at predetermined time intervals by controlling by the control unit 14b.

On the other hand, as shown in FIG. 4, the woven fabric holding portion 3 is formed by superimposing and joining the front and back covers 3a and 3b in the front and back directions. Similar to the light source holding portion 5 described above, the front and back covers 3a and 3b are each provided with a positioning boss 3c and a positioning hole 3d into which the positioning boss 3c is fitted.

The front and back covers 3a and 3b of the woven fabric holding portion 3 are provided with plug protrusions 16a and 16b from the bases 15a and 15b toward the front, and the base 15a of the front cover 3a and the plug protrusions protruding from the base 15a. On the back surface of the back surface 16a, the base portion 15b of the back cover 3b, and the front surface of the plug projecting piece 16b, woven fabric accommodating recesses 17a and 17b opened to the front end and the rear end of the front and back covers 3a and 3b are recessed.

Each of the plug protrusions 16a and 16b becomes a plug portion 18 having a width that can be fitted to the socket opening 13 of the light source holding portion 5 and dimensions in the thickness direction in a state where the front and back covers 3a and 3b are laminated, and accommodates each woven fabric. The width dimension of the recesses 17a and 17b is formed so as to substantially match the width dimension of the optical fiber woven fabric 2.

Further, the front and back covers 3a and 3b of the woven fabric holding portion 3 are provided with a connecting support portion 3e as in the light source holding portion 5, and a connecting hole 3f is provided in each connecting support portion 3e. As shown in FIG. 6, with the plug portion 18 fitted in the socket opening 13, the connecting support portion 3e formed at the left end of the front cover 3a of the fabric holding portion 3 is the back cover 5b of the light source holding portion 5. The connecting support portion 3e of the back cover 3b is arranged at a position that supports the connecting support portion 5e of the front cover 5a of the light source holding portion 5 from the back surface side while being held on the connecting support portion 5e formed on the back cover 3b. ..

The optical fiber fabric 2 is held in the fabric holding portion 3 by aligning the tip end with the front end of the front and back covers 3a and 3b in the fabric accommodating recesses 17a and 17b of the front and back covers 3a and 3b, and then holding the cover on the opposite side. Is performed by fitting the positioning boss 3c and the positioning hole 3d, superimposing them, and fixing them.

After fitting the plug portion 18 of the fabric holding portion 3 holding the optical fiber fabric 2 into the socket opening 13 of the light source holding portion 5, a screw, a nut or the like inserted into the connecting holes 3f and 5f is used. When both are connected, as shown in FIG. 6, the incident edge 1 of the optical fiber fabric 2 is aligned in the plane including the optical axis of each light source 4 in the light source holding portion 5. When the light emitting light source 4 is made to emit light in this state, the irradiation light is guided into the optical fiber of the optical fiber fabric 2, and the display unit 8 emits light.

In this case, if the color development of the light emitting light source 4 is changed with the passage of time, or if the color development of each light emitting light source 4 is controlled to be different, the color of the display unit 8 is changed with the passage of time, or the display unit is displayed. 8 can be displayed as a band of different colors.

In the above, the case where the irradiation light of the light emitting light source 4 is directly introduced into the incident end of the optical fiber has been shown. It can be interposed between the light emitting light source 4 and the edge of the optical fiber fabric 2 in a facing position. Desirably, when the edge of the optical fiber fabric 2 is arranged near the rear focal position of the plano-convex cylindrical lens 6, the irradiation light from the light emitting light source 4 can be focused on the edge of the optical fiber fabric 2. , The amount of light guide is increased.

Further, in the above, the case where the incident end is arranged in the optical axis direction of the light emitting light source 4 is shown, but as shown in FIG. 8, the case where the optical fiber fabric 2 cannot be aligned with the optical axis direction of the light emitting light source 4. An optical element 7 for changing an optical path can be interposed between the edge of the optical fiber fabric 2 and the light emitting light source 4.

FIG. 8 shows a case where a mirror is used as the optical path changing optical element 7, and the irradiation light from the light emitting light source 4 is refracted by the mirror and guided to the incident end of the optical fiber fabric 2. In addition to this, a prism or the like can be used as the optical element 7 for change, and the angle between the irradiation direction of the light emitting light source 4 and the incident end of the optical fiber fabric 2 is set to an appropriate angle other than 90 degrees. be able to.

1 Incident edge 2 Optical fiber fabric 3 Textile holder 4 Light source 5 Light source holder 6 Plano-convex cylindrical lens 7 Optical path change optical element

Claims (5)

An optical fiber woven fabric formed by weaving a plurality of side light leakage type optical fibers as wefts and having one end edge along the warp as an incident end edge.
A woven fabric holding portion formed by joining the front and back covers having a plug projecting piece protruding from the base to the front and attached to the incident end edge of the optical fiber woven fabric.
It has a light source holding portion that can be connected to the woven fabric holding portion and holds a light emitting light source incident on the incident edge of the optical fiber woven fabric in the connected state.
The front and back covers are formed with woven fabric accommodating recesses having a width dimension substantially matching the width dimension of the optical fiber woven fabric and being opened at the front and rear ends.
The woven fabric holding portion is formed by joining one of the front and back covers that holds the front end portion of the fiber woven fabric in the woven fabric accommodating recess by superimposing the other cover in the front and back directions.
In addition, a light emitting display device is provided with a socket opening in the light source holding portion into which a plug portion formed by polymerizing plug protrusions on the front and back covers of the woven fabric holding portion is fitted. The light emitting display device according to claim 1, wherein a plurality of light emitting light sources are held in parallel along the incident edge of the optical fiber fabric in the light source holding unit. The distance between the light emitting light source of the light source holding portion and the incident edge of the optical fiber fabric has a length substantially equal to the length of the incident edge of the optical fiber fabric, and the convex portion is directed toward the light emitting light source and is oriented in the longitudinal direction. The light emission display device according to claim 1 or 2, wherein a plano-convex cylindrical lens is interposed along the incident end edge of the optical fiber fabric. The light emitting light source is arranged at a position where the optical axis intersects the line length direction of the optical fiber at a predetermined angle, and is also arranged.
The invention according to claim 1, 2 or 3, wherein an optical path changing optical element for changing the optical path of the irradiation light from the light emitting light source in the line length direction of the optical fiber is arranged between the light emitting light source and the incident edge of the optical fiber fabric. Light source display device. The light emitting display device according to any one of claims 1 to 4, wherein a multicolor light emitting diode is used as the light emitting light source.

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