JP2018010957A - Light-emitting display member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-emitting display member which can be installed with high degree of freedom, while suppressing unevenness in brightness of emitted light.SOLUTION: A light-emitting part 20 has an electric field light-emitting fiber (EL fiber) 21R emitting red light, an EL fiber 21G emitting green light, and an EL fiber 21B emitting blue light. The light-emitting part 20 has a filamentous transmission part 27 extending along the EL fibers 21R, 21G, 21B, and composed of a resin material transmitting light.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a light emitting display member that has a plurality of light emitters having different light emission colors and can display an arbitrary color through interference of light emitted from the light emitters.

  As this type of light-emitting display member, the one described in Patent Document 1 is known. This light-emitting display member has three light-emitting diodes having different emission colors (specifically, red, green, and blue) and an optical fiber material. Each light emitting diode is disposed at the end of the optical fiber material in such a manner that emitted light is incident on the inside of the optical fiber material.

  In this light emitting display member, the light incident from each light emitting diode diffuses while interfering inside the optical fiber material, whereby the entire optical fiber material emits light. And it becomes possible to make an optical fiber material light-emit in arbitrary colors by adjusting the brightness | luminance of the light which each light emitting diode emits separately.

JP-A-11-249608

  Generally, since the optical fiber material has low bending strength, the degree of freedom in setting the shape is low. Therefore, it can be said that the light-emitting display member described in Patent Document 1 having such an optical fiber material has a low degree of freedom in its installation.

  Moreover, since the light-emitting display member of Patent Document 1 has a structure in which light incident from the end of the optical fiber material diffuses into the entire inside of the optical fiber material, when the optical fiber material becomes long, the attenuation of the light inside the optical fiber material Is unavoidable, and there is a risk of spotting in the lightness of light in each part of the optical fiber material.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a light-emitting display member that can be installed with a high degree of freedom while suppressing the occurrence of spots in the brightness of emitted light.

  A light-emitting display member for solving the above problems includes a plurality of electroluminescent fibers having different emission colors, and a thread-like transmission portion made of a resin material that extends along the electroluminescent fibers and transmits light. Have.

Since the electroluminescence fiber (hereinafter referred to as “EL fiber”) emits light itself, the lightness of light in each part is substantially equal.
In the light emitting display member, since such an EL fiber is used as a light emitter, even if the installation range of the light emitting display member is long, unevenness occurs in the brightness of light in each part of the light emitting display member. It can be suppressed.

  The light-emitting display member has a thread-like transmission part made of a resin material that transmits light, in addition to the EL fiber that is a light emitter, and thus has a different color (specifically, wavelength) from the plurality of EL fibers. However, the light enters the inside of the transmission part and diffuses and interferes therewith. As a result, light emitted from the plurality of EL fibers can be prevented from being emitted to the outside of the light emitting display member without interfering with each other. it can.

  Moreover, since the light-emitting display member has a structure made of a thread-like member (EL fiber and transmissive portion), the light-emitting display member is easily bent as compared with a structure in which the light emitter and the transmissive portion are integrally fixed. It can be structured and can be installed with a high degree of freedom according to the shape of the installation part.

  In the light-emitting display member, the plurality of electroluminescent fibers have a structure twisted in a bundled state, the transmission portion has a structure knitted in a cylindrical shape, and the plurality of the plurality of electroluminescent fibers. It is preferable that the electroluminescent fibers are collectively covered.

  According to the light emitting display member, since a plurality of EL fibers are twisted in a bundled state, when the light emitting display member is viewed from the outer peripheral side, the proportion of each EL fiber on the outer surface thereof The EL fibers can be arranged so that they are equal. Therefore, it is possible to suppress the occurrence of spots in the light emission color in each part of the light emitting display member.

  In addition, the light emitted from the plurality of EL fibers is emitted to the outside of the light emitting display member after passing through the transmission part that collectively covers the EL fibers. As a result, light emitted from a plurality of EL fibers can be uniformly interfered and diffused over the entire circumference of the light emitting display member, so that it is preferable that the light emission color is uneven in each part of the light emitting display member. Can be suppressed.

Moreover, by covering with a transmission part knitted into a cylindrical shape, a plurality of EL fibers can be held in a twisted state in a bundled state.
In the light-emitting display member, it is preferable that the plurality of electroluminescent fibers and the transmission portion have a structure twisted in a bundled state.

  According to the light-emitting display member, when the light-emitting display member is viewed from the outer peripheral side, the EL fiber and the transmission part are arranged so that the proportion of each EL fiber in each part of the outer surface and the ratio of the transmission part are equal. Can be arranged. Therefore, it is possible to suppress the occurrence of spots in the light emission color in each part of the light emitting display member. In addition, the light-emitting display member having such a structure can be easily formed by a simple operation of twisting a plurality of EL fibers and a transmissive portion after being bundled together.

The light-emitting display member preferably has a structure in which the plurality of electroluminescent fibers and the transmission portion are knitted.
According to the light emitting display member described above, the transmission portion is knitted between the plurality of EL fibers without using a special configuration for fixing the EL fiber and the transmission portion to each other. A light emitting display member in which the portion is arranged can be formed. According to such a light emitting display member, it is possible to suppress the light emitted from the plurality of EL fibers from being emitted outside the light emitting display member without interfering with each other.

In the light-emitting display member, it is preferable that the transmission portion is made of a transparent material.
According to the light emitting display member, unnecessary scattering of light inside the transmissive portion can be suppressed as compared with the transmissive portion made of a translucent material. Can emit light.

  In the light-emitting display member, the plurality of electroluminescent fibers preferably include an electroluminescent fiber that emits red light, an electroluminescent fiber that emits green light, and an electroluminescent fiber that emits blue light.

  According to the light-emitting display member, the three primary colors of light (red [R], green [G], and blue [B]) can be emitted separately within the light-emitting display member. Can be set in degrees.

  According to the light-emitting display member of the present invention, it is possible to suppress the occurrence of spots in the brightness of emitted light and to install with high degree of freedom.

The perspective view of the sheet | seat in which the light emission part as a light emission display member of one Embodiment is provided. Sectional drawing which shows the internal structure of EL fiber. The exploded side view of a light emission part. Sectional drawing along line 4-4 of FIG. 3 of a light emission part. The side view of the light emission part of other embodiment. (A) of the light emission part of other embodiment is a side view, (b) is an end elevation along the 6b-6b line | wire in (a). The top view of the light emission part of other embodiment. The perspective view of the dashboard in which the light emission part of other embodiment is provided.

Hereinafter, an embodiment of the light emitting display member will be described.
As shown in FIG. 1, a light emitting unit 20 as a light emitting display member that emits light in a predetermined color is attached to a seat 11 of an automobile. The light emitting unit 20 extends along the front surface of the headrest portion 12 of the seat 11, the front surface of the backrest portion 13, and the edge of the seat surface of the seat portion 14 in the vehicle width direction. The light emitting unit 20 includes three electroluminescence fibers (hereinafter referred to as EL fibers) having different emission colors.

  As shown in FIG. 2, the EL fibers 21R, 21G, and 21B are formed in order from the central axis L side by a cylindrical core electrode 22, a reflective layer 23 that reflects light incident from the outer peripheral side, and an external power supply. It has a multilayer structure including a light emitting layer 24 that emits light, a transparent electrode 25, and a translucent colored layer 26 colored in a predetermined color (specifically, red, green, or blue).

  Each of the EL fibers 21R, 21G, and 21B has a structure in which the light emitting layer 24 emits pale light when AC power (AC current) is supplied between the core electrode 22 and the transparent electrode 25. In addition, the EL fibers 21R, 21G, and 21B have a structure in which the luminance is changed by adjusting the voltage and frequency of the AC power supplied between the core electrode 22 and the transparent electrode 25.

  The three EL fibers 21R, 21G, and 21B have different emission colors depending on the color of the colored layer 26. That is, the EL fiber 21R having the red colored layer 26 emits red light, the EL fiber 21G having the green colored layer 26 emits green light, and the EL fiber 21B having the blue colored layer 26 emits blue light.

  The automobile is provided with a control device 15 that controls the emission color of the light emitting unit 20 having the three EL fibers 21R, 21G, and 21B. The control device 15 incorporates an inverter and is connected to the EL fibers 21R, 21G, and 21B and the storage battery 16. The control device 15 converts the DC power of the storage battery 16 into AC power by an inverter and supplies the AC power to each EL fiber 21R, 21G, 21B.

  The self-propelled vehicle includes a door opening switch 17 that detects that the door is opened, an air conditioner switch 18 that switches between operation and non-operation of the air conditioner, an inter-vehicle distance sensor 19 that detects an inter-vehicle distance from the following vehicle, and the like. Various sensors are attached. Detection signals of these sensors are taken into the control device 15. The control device 15 performs various calculations based on the detection signals of the various sensors, and adjusts the voltage and frequency of the AC power supplied to the EL fibers 21R, 21G, and 21B based on the calculation results, and the light emitting unit 20 Controls the emission color.

  For example, when the door of an automobile is opened, the light emitting unit 20 emits light orange light, and the light emitting unit 20 functions as a welcome lamp. When the air conditioner functions as a heating device, the light emitting unit 20 emits light in warm color (orange) to produce warmth, and when it functions as a cooling device, the light emitting unit 20 emits light in cold color (blue). Let it produce coolness. In addition, when the inter-vehicle distance with the following vehicle becomes short, the occupant is alerted by causing the light emitting unit 20 to emit red light.

Hereinafter, a specific structure of the light emitting unit 20 will be described.
As shown in FIGS. 3 and 4, the three EL fibers 21 </ b> R, 21 </ b> G, and 21 </ b> B extend in a spiral shape having the same radius and the same pitch around the center line C of the light emitting unit 20. Thereby, the three EL fibers 21R, 21G, and 21B have a structure that is twisted in a bundled state.

  The light emitting unit 20 has a transmission net portion 28 constituted by a thread-like transmission portion 27 made of a transparent resin material (for example, nylon). FIG. 3 shows only the center line of each transmission part 27, and FIG. 4 shows only the outline of the transmission net part 28. The transmission net portion 28 has a structure in which the transmission portion 27 is knitted in a cylindrical shape. Three EL fibers 21R, 21G, and 21B twisted in a bundled state are inserted into the transmission net portion 28. Thus, the light emitting unit 20 has a structure in which the three EL fibers 21R, 21G, and 21B are collectively covered by the transmission net unit 28 including the transmission unit 27. In addition, the light emitting unit 20 has a structure in which the transmission unit 27 extends along the three EL fibers 21R, 21G, and 21B that are twisted in a bundle.

Hereinafter, the effect | action by providing such a light emission part 20 is demonstrated.
Since the EL fibers 21R, 21G, and 21B emit light themselves, the lightness of light in each part is substantially equal. In the present embodiment, since such EL fibers 21R, 21G, and 21B are used as light emitters, even if the installation range of the light emitting unit 20 is long, the brightness of light in each part of the light emitting unit 20 varies. Is suppressed.

  In addition to the EL fibers 21R, 21G, and 21B that are light emitters, the EL fibers 21R, 21G, and 21B are provided with a thread-like transmission portion 27 (specifically, a transmission net portion 28) made of a transparent resin material. Although light of different colors (specifically, wavelengths) is emitted from 21B, the light enters the inside of the transmission part 27 and diffuses and interferes therewith. As a result, the light emitted from the three EL fibers 21R, 21G, and 21B can be prevented from being emitted outside the light emitting unit 20 without interfering with each other. That can be suppressed.

  Moreover, since the light emitting unit 20 has a structure made of thread-like members (EL fibers 21R, 21G, and 21B and the transmission part 27), the light emission is the same as that of a structure in which the light emitter and the transmission part are integrally fixed. The part 20 can be bent easily and can be made flexible. Therefore, the light emitting unit 20 can be installed with a high degree of freedom in accordance with the shape of the installation part.

  The front surface and seating surface of the seat 11 to which the light emitting unit 20 is attached are soft in order to improve sitting comfort, and are flexibly deformed in accordance with the seating of the occupant or a change in posture. According to this embodiment, since the light emitting unit 20 can have a flexible structure, the light emitting unit 20 follows the deformation of the sheet 11 even though the light emitting unit 20 is attached to the sheet 11. It will be deformed without losing its high durability.

  The light emitting unit 20 has a structure in which three EL fibers 21R, 21G, and 21B are twisted in a bundle. Therefore, when the light emitting unit 20 is viewed from the outer peripheral side, the EL fiber 21R occupies the outer surface, the EL fiber 21G occupies the EL fiber 21B, and the EL fiber 21B occupies the EL fiber 21R. , 21G, 21B can be arranged. Also by adopting such a structure, it is possible to suppress the occurrence of spots in the emission color in each part of the light emitting unit 20.

  The EL fibers 21R, 21G, and 21B are configured by an EL fiber 21R that emits red light, an EL fiber 21G that emits green light, and an EL fiber 21B that emits blue light. Therefore, the three primary colors of light (red [R], green [G], and blue [B]) can be emitted separately inside the light emitting unit 20, and the light emission color of the light emitting unit 20 is set with a high degree of freedom. be able to.

  Furthermore, the light emitted from the three EL fibers 21R, 21G, and 21B passes through the transmission net portion 28 that collectively covers the EL fibers 21R, 21G, and 21B, and then is emitted to the outside of the light emitting portion 20. It becomes like this. As a result, the light emitted from the three EL fibers 21R, 21G, and 21B can be uniformly interfered and diffused over the entire circumference of the light emitting unit 20, so that the light emission color in each part of the light emitting unit 20 is changed. It becomes possible to suitably suppress the occurrence of spots. In addition, by covering with a transmission part 27 (specifically, transmission net part 28) knitted in a cylindrical shape, the structure in which the three EL fibers 21R, 21G, and 21B are twisted together in a bundle is maintained. Can also be held.

  In the present embodiment, the transmission net portion 28 is formed of a transparent material. Accordingly, unnecessary scattering of light inside the transmission net portion 28 (specifically, the transmission portion 27) can be suppressed as compared with the case where the transmission net portion is made of a translucent material. Light can be easily emitted by color.

As described above, according to the present embodiment, the following effects can be obtained.
(1) Since the EL fibers 21R, 21G, and 21B are used as light emitters, even if the installation range of the light emitting unit 20 is long, unevenness occurs in the lightness of light in each part of the light emitting unit 20. It can be suppressed. In addition to the EL fibers 21R, 21G, and 21B, which are light emitters, a thread-like transmission portion 27 (specifically, a transmission net portion 28) made of a transparent resin material is provided. It is possible to suppress the occurrence of spots on the color. And since the light emission part 20 is a structure which consists of a thread-like member, the light emission part 20 can be made into a structure which can be bent easily, and can be installed with a high degree of freedom according to the shape of the installation part.

  (2) The light emitting unit 20 has a structure in which the three EL fibers 21R, 21G, and 21B are twisted in a bundle. Therefore, it is possible to suppress the occurrence of spots in the light emission color in each part of the light emitting unit 20. Further, the light emitted from the three EL fibers 21R, 21G, and 21B passes through the transmission net portion 28 that collectively covers the EL fibers 21R, 21G, and 21B, and then is irradiated to the outside of the light emitting portion 20. . Therefore, it is possible to suitably suppress the occurrence of spots in the light emission color in each part of the light emitting unit 20. Moreover, by covering with the transmission part 27 knitted in a cylindrical shape, the three EL fibers 21R, 21G, and 21B can be held in a twisted state in a bundled state.

(3) Since the transmissive net portion 28 is formed of a transparent material, the light emitting portion 20 can easily emit light with a desired color as compared with a case where the transmissive net portion is made of a translucent material.
(4) Since the three EL fibers 21R, 21G, and 21B are configured by the EL fiber 21R that emits red light, the EL fiber 21G that emits green light, and the EL fiber 21B that emits blue light, Twenty emission colors can be set with a high degree of freedom.

The above embodiment may be modified as follows.
-Not only providing one light emission part 20 in one place, you may make it arrange several light emission parts 20 side by side without a gap (or at short intervals).

  As shown in FIG. 5, the light emitting unit 30 including the three EL fibers 21R, 21G, and 21B and the transmission unit 27 is obtained by weaving the three EL fibers 21R, 21G, and 21B and the transmission unit 27. May be formed. According to such a light emitting unit 30, a special configuration is used to fix the EL fibers 21R, 21G, 21B and the transmissive part 27 to each other by weaving the transmissive part 27 into the three EL fibers 21R, 21G, 21B. Without any problem, it is possible to form the light emitting section 30 in which the transmission section 27 is disposed between the three EL fibers 21R, 21G, and 21B. Further, according to the light emitting unit 30, the light emitted from the EL fibers 21R, 21G, and 21B enters the inside of the transmission unit 27 and diffuses and interferes therewith, so that the light is emitted without interfering with each other. It is possible to prevent the part 30 from being released to the outside. Note that the method of knitting the EL fibers 21R, 21G, and 21B and the transmission portion 27 is not limited to the knitting method shown in FIG. 5 and can be arbitrarily changed. Further, not only one transmissive portion 27 is knitted into the three EL fibers 21R, 21G, and 21B, but a plurality of transmissive portions 27 may be knitted.

  As shown in FIGS. 6A and 6B, the light emitting section 40 is twisted in a state where the three EL fibers 21R, 21G, and 21B and the transmission section 27 are bundled together. Also good. According to such a configuration, when the light emitting section 40 is viewed from the outer peripheral side, the EL fibers 21R, 21G, and 21B occupy the occupying ratio of the EL fibers 21R, 21G, and 21B and the occupying ratio of the transmitting section 27 are equal. 21R, 21G, 21B and the transmission part 27 can be arranged. Specifically, when the light emitting unit 40 is viewed from the outer peripheral side, the area of the portion occupied by the EL fiber 21R, the portion occupied by the EL fiber 21G, the portion occupied by the EL fiber 21B, and the portion occupied by the transmission portion 27 on the outer surface thereof. The EL fibers 21R, 21G, and 21B and the transmission part 27 can be arranged so that the ratio is equal in each part of the outer surface. Therefore, it is possible to suppress the occurrence of spots in the light emission color in each part of the light emitting unit 40. Moreover, the light emitting section 40 having such a structure can be easily formed by a simple operation of twisting the three EL fibers 21R, 21G, and 21B and the transmission section 27 after being bundled together. In addition, the number of the transmission parts 27 provided in the light emission part 40 can be changed arbitrarily. In the above configuration, in order to suppress the occurrence of spots in the light emission color in each part of the light emitting unit 40, the transmission unit 27 is disposed so as to cover the outer periphery of the three EL fibers 21R, 21G, and 21B in a bundled state. It is desirable.

  -As shown in FIG. 7, you may make the light emission part 50 the structure woven so that each EL fiber 21R, 21G, 21B and the permeation | transmission part 27 may become a warp and a weft. In the example shown in FIG. 7, the warp and weft constituting the light emitting unit 50 are arranged in the order of “EL fiber 21R → transmission part 27 → EL fiber 21G → transmission part 27 → EL fiber 21B → transmission part 27”. According to such a configuration, the transmission part 27 is arranged between adjacent EL fibers (for example, EL fibers 21R and 21G), and light emitted from the EL fibers is incident on the inside of the transmission part 27 to diffuse and interfere. Therefore, it is possible to suppress the occurrence of spots in the light emission color in each part of the light emitting unit 20. In addition, since the light emitting unit 50 has a structure made of thread-like members (EL fibers 21R, 21G, 21B and the transmitting part 27), the light emitting unit 50 is made to be flexible and easy to bend as compared with a flat plate. Can do. Therefore, it can be installed with a high degree of freedom according to the shape of the installation part. Moreover, since it becomes possible to deform | transform so that it may follow the deformation | transformation of the installed part, high durability performance comes to be demonstrated.

  The thickness of the transmission part 27 can be arbitrarily set such as the same thickness as the EL fibers 21R, 21G, and 21B, or a different thickness from the EL fibers 21R, 21G, and 21B.

-You may make it provide the light emission part 20 in parts other than the sheet | seat 11. FIG. For example, as shown in FIG. 8, the light emitting unit 60 can be provided on a dashboard 61 of an automobile.
-As a material which forms the transmission part 27, what is necessary is just the resin material which permeate | transmits light, and you may employ | adopt a translucent resin material.

  The EL fibers 21R, 21G, and 21B are not limited to those having the structure shown in FIG. Specifically, for example, an EL fiber that does not have the reflective layer 23 can be employed.

  -You may form a light emission part using only two types of three types of EL fiber 21R, 21G, 21B from which luminescent color differs mutually. Further, instead of the EL fibers 21R, 21G, and 21B, it is possible to employ EL fibers that emit intermediate colors other than the three primary colors.

  DESCRIPTION OF SYMBOLS 11 ... Seat, 12 ... Headrest part, 13 ... Backrest part, 14 ... Seat part, 15 ... Control apparatus, 16 ... Storage battery, 17 ... Door open switch, 18 ... Air conditioner switch, 19 ... Inter-vehicle distance sensor, 20, 30, 40 , 50, 60 ... light emitting part, 21R, 21G, 21B ... electroluminescent (EL) fiber, 22 ... core electrode, 23 ... reflective layer, 24 ... light emitting layer, 25 ... transparent electrode, 26 ... colored layer, 27 ... transmission part , 28 ... Transparent net part, 61 ... Dashboard.

Claims (6)

A plurality of electroluminescent fibers having different emission colors;
A light emitting display member having a thread-like transmission portion made of a resin material that extends along the electroluminescent fiber and transmits light. The light emitting display member according to claim 1,
The plurality of electroluminescent fibers have a structure twisted in a bundled state,
The light-emitting display member, wherein the transmission part has a structure knitted in a cylindrical shape and covers the plurality of electroluminescent fibers together. The light emitting display member according to claim 1,
The light-emitting display member, wherein the plurality of electroluminescent fibers and the transmission portion are twisted in a bundled state. The light emitting display member according to claim 1,
A light-emitting display member having a structure in which the plurality of electroluminescent fibers and the transmission portion are knitted. In the light emission display member of any one of Claims 1-4,
The light-emitting display member, wherein the transmissive portion is made of a transparent material. In the light emission display member of any one of Claims 1-5,
The plurality of electroluminescent fibers include an electroluminescent fiber that emits red light, an electroluminescent fiber that emits green light, and an electroluminescent fiber that emits blue light.