JP6489546B2 - Illuminated display device - Google Patents

Description

  The present invention relates to an illumination display device that illuminates and displays a predetermined display pattern such as characters, symbols, and graphics.

  A variety of illuminated display devices have been developed that are used for product advertisements and guidance displays, and that illuminate display patterns such as various characters, symbols, and figures so that the desired information can be correctly recognized even at night or in places with low illumination. Yes. Such an illumination display device has a case where the illumination display is always performed and a case where the illumination display is performed only when necessary. With the recent diversification of the display, the demand in the latter case has increased. In particular, when the display is not illuminated, the display pattern is required not to be recognized by the user.

  Therefore, application of the technology of a light guide plate (backlight) used in a liquid crystal display device can be considered for such an illuminated display device. The light guide plate here has a function of propagating light from a light source such as a cold cathode fluorescent lamp (CCFL) or a light emitting diode (LED) and illuminating a portion to be illuminated. . As a conventional example of such a light guide plate, Patent Document 1 (Conventional Example 1) proposes a light guide plate 801 having a light control pattern 814 formed on one surface. FIG. 9 is a diagram for explaining a conventional light guide plate. FIG. 9A is a plan view of the light guide plate 801 of Conventional Example 1, and FIG. 9B is cited in Conventional Example 1. It is the top view and side view of the light guide plate 901 of the prior art example (conventional example 2).

  The light guide plate 801 of Conventional Example 1 shown in FIG. 9A has a light incident surface 813 on the side surface, a large number of unit patterns 840 are irregularly formed on the reflective surface 812, and the distribution density per unit area is almost equal. It is formed with a uniform arrangement. The unit pattern 840 is made of a cylindrical recess, a conical recess, a truncated cone, a moon cut pattern, a printing dot, or the like. Then, the light propagating through the light guide plate 801 is scattered by the unit pattern 840 so that the light emitting surface opposite to the reflective surface 812 is lit.

  The light guide plate 901 of Conventional Example 2 shown in FIG. 9B has a light incident surface 913 on the side surface, and is configured by regularly forming a large number of V-groove unit patterns 940 on the reflective surface 912. Yes. Then, similarly to Conventional Example 1, the light propagating through the light guide plate 901 is scattered by the unit pattern 940 so that the light emitting surface 915 opposite to the reflecting surface 912 is illuminated.

  In addition, although not shown, a light-scattering pattern layer containing powder such as titanium dioxide is provided on the reflection surface of the light guide plate, and the light is scattered by this pattern layer so that the light-emitting surface is illuminated. There is also a light guide plate technology (conventional example 3).

  In this way, by providing the unit patterns (840, 940) of Conventional Example 1 and Conventional Example 2 and the pattern layer of Conventional Example 3, when the illumination display is desired, the light source is turned on and the light emitting surface is illuminated. To do. Then, by providing a translucent display pattern on the light emitting surface side or using the unit pattern (840, 940) and the pattern layer itself as the display pattern, the display pattern is illuminated and recognized by the user. .

JP 2008-84544 A

  However, in the method of processing the surface of the light guide plate (801, 901) of Conventional Example 1 or Conventional Example 2, it is difficult to clearly display a desired display pattern because the unit pattern has a certain size. It was. In addition, in the conventional example 1 and the conventional example 2, even when the illumination display is not performed (when the light source is not turned on), the unit pattern (840, 940) is visually recognized by the user by the transmitted light or reflected light to the light guide plate. was there. Further, even in the conventional example 3, there is a problem that the pattern layer is visually recognized by the user as a matter of course.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an illuminated display device that is not visually recognized when a light source is not turned on, and that can illuminate a predetermined display pattern when the light source is turned on.

In order to solve this problem, the illuminated display device of the present invention is an illuminated display device that illuminates and displays a predetermined display pattern, and has a light incident portion at an end portion where light from a light source enters. And a pattern layer formed on the surface of the light guide and provided with the predetermined display pattern, the pattern layer having a silver nanowire film in which fine fibrous silver nanowires are dispersed in a transparent binder. When the light does not enter from the end portion of the light guide, the pattern layer is not visually recognized, and when the light enters from the end portion of the light guide. It is characterized by being illuminated and visually recognized.

  According to this, in the illuminated display device of the present invention, since the pattern layer is a silver nanowire film having very thin fibrous silver nanowires, even if reflected light or transmitted light enters the pattern layer. Reflected light and transmitted light are not affected by the silver nanowires. For this reason, when light is not incident from the end of the light guide when the light source is not turned on, the pattern layer is not visually recognized by the user. On the other hand, when light enters from the end of the light guide when the light source is turned on, the light propagating through the light guide is scattered by the silver nanowires of the pattern layer. For this reason, the pattern layer is illuminated and is visually recognized as a predetermined display pattern illuminated by the user. Accordingly, it is possible to provide an illuminated display device that does not visually recognize a predetermined display pattern when the light source is not lit, and can illuminate and display the predetermined display pattern when the light source is lit.

  The illuminated display device of the present invention is characterized in that a plurality of the light guides are provided, and the pattern layer is formed on at least two of the plurality of light guides.

  According to this, a predetermined display pattern can be separately assigned to each of the plurality of light guides. This can enrich the expression by illumination display.

  The illuminated display device of the present invention is characterized in that the at least two light guides are disposed so as to face each other at a distance.

  According to this, the same predetermined display pattern can be provided on each of the plurality of light guides, and the same predetermined display pattern can be overlaid. For this reason, the display color of a predetermined display pattern can be changed by changing the color of the light which enters each light guide. In addition, the display color can be increased by the combination of the colors of the incident light. As a result, the expression by illumination display can be further enriched.

  In the illuminated display device of the present invention, the pattern layer is a silver nanowire film having very thin fibrous silver nanowires. Therefore, even if reflected light or transmitted light enters the pattern layer, the reflected light or transmitted light is transmitted. Light is not affected by the silver nanowires. For this reason, when light is not incident from the end of the light guide when the light source is not turned on, the pattern layer is not visually recognized by the user. On the other hand, when light enters from the end of the light guide when the light source is turned on, the light propagating through the light guide is scattered by the silver nanowires of the pattern layer. For this reason, it comes to be visually recognized as a predetermined display pattern by which the pattern layer was illuminated by the user. Accordingly, when the light source is not lit, the predetermined display pattern is not visually recognized, and when the light source is lit, the predetermined display pattern can be illuminated.

It is a perspective view explaining the illuminated display apparatus of 1st Embodiment of this invention. It is a block diagram explaining the illumination display apparatus of 1st Embodiment of this invention, Comprising: It is the top view seen from the Z1 side shown in FIG. It is a block diagram explaining the illumination display apparatus of 1st Embodiment of this invention, Comprising: It is sectional drawing in the III-III line | wire shown in FIG. It is process drawing explaining the formation method of the pattern layer concerning the illuminated display apparatus of 1st Embodiment of this invention. It is a disassembled perspective view explaining the illuminated display apparatus of 2nd Embodiment of this invention. It is a perspective view explaining the illuminated display apparatus of 2nd Embodiment of this invention. FIGS. 7A and 7B are diagrams illustrating an illuminated display device according to a second embodiment of the present invention, in which FIG. 7A is a top view seen from the Z1 side shown in FIG. 6 and FIG. It is the side view seen from the X1 side shown. It is a figure explaining the illuminated display apparatus of 2nd Embodiment of this invention, Comprising: It is sectional drawing in the VIII-VIII line shown to Fig.7 (a). FIG. 9A is a plan view of a light guide plate of Conventional Example 1, and FIG. 9B is a conventional example cited in Conventional Example 1 (FIG. 9A). It is the top view and side view of the light-guide plate of the prior art example 2).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view illustrating an illuminated display device 101 according to the first embodiment of the present invention. FIG. 2 is a configuration diagram illustrating the illumination display device 101 according to the first embodiment of the present invention, and is a top view seen from the Z1 side shown in FIG. FIG. 3 is a configuration diagram illustrating the illumination display device 101 according to the first embodiment of the present invention, and is a cross-sectional view taken along line III-III shown in FIG.

  The illuminated display device 101 according to the first embodiment of the present invention has an appearance as shown in FIG. 1 and FIG. 2, and, as shown in FIG. 3, a light guide L1 having a light incident portion L1n at the end, and a light guide. And a pattern layer 5 formed on the surface of the light body L1. In addition, in the first embodiment of the present invention, as shown in FIGS. 1 to 3, the illuminated display device 101 includes a light source LE1 disposed facing the light incident portion L1n of the light guide L1, and a light guide. It has a case K17 that accommodates the light body L1, and a wiring board 19 on which a connector CN that enables connection between the light source LE1 and external devices is mounted. The illuminated display device 101 is configured to illuminate and display a predetermined display pattern drawn on the pattern layer 5 when the light source LE1 is turned on. 1 and 2 do not show a specific predetermined display pattern in the pattern layer 5, but display patterns such as characters, symbols, and figures are provided. Further, in the cross-sectional view of FIG. 3, the pattern layer 5 shows a portion with and without a display pattern (PT shown in the drawing).

  First, the light guide L1 of the illumination display device 101 is made of borosilicate glass having translucency, and has a sheet shape and a rectangular shape as shown in FIGS. The outer periphery is surrounded by a case K17. Also, as shown in FIG. 3, the end portion of the light guide L1 has a light incident portion L1n into which light from the light source LE1 enters. When the light source LE1 is turned on, the light incident portion The light from the light source LE1 entering from L1n is repeatedly reflected at the boundary between the upper surface L1u or the lower surface L1d of the light guide L1 and the air layer, and propagates inside the light guide L1.

  Next, as shown in FIGS. 1 to 3, the pattern layer 5 of the illumination display device 101 is formed on the surface of the light guide L1 (upper surface L1u in FIG. 3), and silver nanowires are dispersed in a transparent binder. The formed silver nanowire film is formed in a pattern. Since this pattern layer 5 is a silver nanowire film having silver nanowires, even if reflected light or transmitted light enters the silver nanowire film of the pattern layer 5, reflected light or transmitted light may be affected by the silver nanowires. Absent. For this reason, the pattern layer 5 is not visually recognized by the user when no light enters from the end of the light guide L1 when the light source LE1 is not lit.

  On the other hand, when light enters from the end of the light guide L1 when the light source LE1 is turned on, the light propagating through the light guide L1 is scattered by the silver nanowires of the silver nanowire film. For this reason, the pattern layer 5 comprised with the silver nanowire film | membrane is illuminated, and comes to be visually recognized as the predetermined | prescribed display pattern illuminated by the user.

  Here, a method for forming the pattern layer 5 will be briefly described. 4A and 4B are process diagrams for explaining a method for forming the pattern layer 5. FIG. 4A shows a state in the middle of the patterning step P1, and FIG. 4B shows a state after the patterning step P1 ends. 4C shows a state after the film forming step P2, and FIG. 4D shows a state after the peeling step P3.

  The pattern layer 5 is formed by first using a positive and photosensitive resist ink and applying the resist ink to the entire surface of the light guide L1 as shown in FIG. 4A using a coater or the like. Then, the resist ink is dried to form a resist film R1. Next, using a photomask, the resist film R1 is exposed and developed to form a resist film R1 having an opening R1k as a predetermined display pattern, as shown in FIG. 4B, and a patterning step P1. Exit. Note that a negative type may be used as the resist ink, but in this case, it is necessary to change the light transmission region of the photomask to obtain a display pattern having the same opening R1k. The pattern layer 5 may be formed by applying silver nanowire ink by screen printing or the like.

  Next, a film forming process P2 for forming the silver nanowire film AG2 is performed. In this film formation step P2, first, an ink in which silver nanowires are dispersed in a binder (for example, manufactured by Starlight PMC Co., Ltd.) is prepared, and this ink is introduced into a predetermined pattern using a coater or the like. It is applied to the entire surface of the light body L1. This ink is composed of silver nanowires, a water-soluble binder, and an aqueous solution. Then, drying is performed to evaporate the aqueous solution, which is a solvent, to form a silver nanowire film AG2 in which silver nanowires are dispersed in a binder as shown in FIG. 4C. This silver nanowire is easily available, and the silver nanowire film AG2 formed using the silver nanowire has high conductivity and excellent invisibility.

  Finally, a peeling process P3 for peeling the resist film R1 is performed. In this peeling step P3, a stripping solution for dissolving the resist film R1 is prepared, and the light guide L1 on which the resist film R1 and the silver nanowire film AG2 are formed is immersed in the stripping solution, or on the surface of the light guide L1. Either dropping the stripping solution is performed. Thereby, the resist film R1 is removed together with the silver nanowire film AG2 formed on the resist film R1. As described above, as shown in FIG. 4D, the pattern layer 5 having a predetermined display pattern (PT shown in FIG. 4D) is formed on the light guide L1.

  Next, the light source LE1 of the illumination display device 101 preferably uses a side-emitting LED (Light Emitting Diode), and is mounted on the wiring board 19 as shown in FIGS. 2 and 3, and the light incident portion L1n. The light emitting surface LE1p is arranged in a direction in which light can be incident on the light incident portion L1n. The light source LE1 is supplied with electric power from the outside via the connector CN.

  Next, the case K17 of the illumination display device 101 is made of a synthetic resin material such as ABS (acrylonitrile butadiene styrene) and has a rectangular cylindrical shape that can accommodate the light guide L1 as shown in FIG. Yes. Further, as shown in FIG. 3, the case K17 has a window K17w opened on the upper and lower surfaces (Z direction shown in FIG. 3). In particular, as shown in FIGS. 5 is exposed from this window K17w.

  Finally, the wiring board 19 of the illumination display device 101 uses a generally known printed wiring board (PWB, Printed Wiring Board), and is mounted with a light source LE1 and a connector CN. The wiring board 19 is disposed so that the light guide L1 and the light source LE1 have substantially the same height, and is fixed to the case K17.

  The effects of the illuminated display device 101 according to the first embodiment of the present invention configured as described above will be described below.

  In the illuminated display device 101 according to the first embodiment of the present invention, the pattern layer 5 formed on the surface of the light guide L1 is a silver nanowire film having very thin fibrous silver nanowires. For this reason, even if reflected light or transmitted light enters the pattern layer 5, the reflected light or transmitted light is not affected by the silver nanowire, so that the light source LE <b> 1 is not turned on from the end of the light guide L <b> 1. When the light is not incident, the pattern layer 5 is not visually recognized by the user. On the other hand, when light enters from the end of the light guide L1 when the light source LE1 is turned on, the light propagating through the light guide L1 is scattered by the silver nanowires of the pattern layer 5. For this reason, the pattern layer 5 is illuminated and visually recognized as a predetermined display pattern illuminated by the user. As a result, it is possible to provide an illuminated display device 101 in which a predetermined display pattern is not visually recognized when the light source LE1 is not lit and a predetermined display pattern can be illuminated when the light source LE1 is lit.

[Second Embodiment]
FIG. 5 is an exploded perspective view illustrating the illuminated display device 102 according to the second embodiment of the present invention. FIG. 6 is a perspective view illustrating the illuminated display device 102 according to the second embodiment of the present invention. FIG. 7 is a diagram for explaining the illuminated display device 102 according to the second embodiment of the present invention. FIG. 7A is a top view as viewed from the Z1 side shown in FIG. 6, and FIG. These are the side views seen from the X1 side shown in FIG. FIG. 8 is a diagram for explaining the illuminated display device 102 according to the second embodiment of the present invention, and is a cross-sectional view taken along line VIII-VIII shown in FIG. The illuminated display device 102 according to the second embodiment is different from the first embodiment in that the configuration mainly includes two light guides L1 (first light guide L11 and second light guide L21). . In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The illuminated display device 102 according to the second embodiment of the present invention has a flat appearance as shown in FIGS. 6 and 7, and includes a light incident portion L1n at the end as shown in FIGS. 1 light guide L11, the pattern layer 15 formed on the surface of the 1st light guide L11, and the 2nd light guide L21 arrange | positioned under the 1st light guide L11 (Z2 direction shown in FIG. 5). And a pattern layer 25 formed on the surface of the second light guide L21. In addition, in the second embodiment of the present invention, the illuminated display device 102 includes a first light source LE11 disposed opposite to the light incident portion L1n of the first light guide L11, and a second light guide L21. The second light source LE21 disposed to face the light incident portion L1n, the cover film CF3 disposed above the first light guide L11 (Z1 direction shown in FIG. 5), and the first light guide L11 The spacer SP4 to be placed, the reflection layer RF6 disposed below the second light guide L21, the case K27 for housing the first light guide L11, the second light guide L21, and the like, and the first light source LE11 And two wiring boards 29 each mounting the second light source LE21. When the first light source LE11 and the second light source LE21 are turned on, the predetermined display patterns drawn on the pattern layer 15 and the pattern layer 25 are illuminated and displayed. In FIG. 5, specific predetermined display patterns in the pattern layer 15 and the pattern layer 25 are not shown, but display patterns such as characters, symbols, and figures are provided. Further, in the cross-sectional view of FIG. 8, in the pattern layer 15 and the pattern layer 25, a portion with and without a display pattern (PT shown in the drawing) is shown.

  First, as shown in FIGS. 5 and 8, the light guide L1 of the illumination display device 102 includes a plurality of first light guides L11 and second light guides L21. As shown in FIG. The two light guides L1 (the first light guide L11 and the second light guide L21) are disposed so as to face each other with a distance therebetween.

  Further, the first light guide L11 and the second light guide L21 are made of a synthetic resin such as polycarbonate (PC) having translucency, and have a sheet-like rectangular shape as shown in FIG. doing. As shown in FIGS. 5 and 8, the light from the first light source LE11 and the second light source LE21 enters the respective end portions of the first light guide L11 and the second light guide L21. It has an optical part L1n. In the first light guide L11, when the first light source LE11 is turned on, the light incident from the light incident portion L1n is the boundary between the upper surface L1u or the lower surface L1d of the first light guide L11 and the air layer. The reflection is repeated at the part to propagate inside the first light guide L11. Similarly, also in the second light guide L21, when the second light source LE21 is turned on, the light incident from the light incident portion L1n is reflected on the upper surface L1u or the lower surface L1d of the second light guide L21 and the air layer. The reflection is repeated at the boundary portion of the light and propagates inside the second light guide L21.

  Next, as shown in FIGS. 5 and 8, the pattern layer 15 of the illumination display device 102 is formed on the surface of the first light guide L11 (upper surface L1u in FIG. 8), and a silver nanowire is formed on the transparent binder. A silver nanowire film in which is dispersed is formed in a pattern. Similarly, the pattern layer 25 of the illumination display device 102 is also formed on the surface of the second light guide L21 (upper surface L1u in FIG. 8), and a silver nanowire film in which silver nanowires are dispersed in a transparent binder is patterned. It is configured in a shape. Since the pattern layer 15 and the pattern layer 25 are silver nanowire films having silver nanowires, even if reflected light or transmitted light enters the silver nanowire film of the pattern layer 15 and pattern layer 25, the reflected light or transmitted light is not reflected. Unaffected by silver nanowires. Therefore, when the first light source LE11 and the second light source LE21 are not turned on, no light enters from the end portions of the respective light guides L1 (first light guide L11 and second light guide L21). The pattern layer 15 and the pattern layer 25 are not visually recognized by the user.

  On the other hand, when the first light source LE11 and the second light source LE21 are turned on, when light enters from the ends of the respective light guides L1 (first light guide L11 and second light guide L21), The light propagating through the light guide L1 (the first light guide L11 and the second light guide L21) is scattered by the silver nanowires of the silver nanowire film. For this reason, the pattern layer 15 and the pattern layer 25 comprised with the silver nanowire film | membrane are illuminated, and it comes to be visually recognized as a predetermined display pattern illuminated by the user, respectively.

  In particular, the illuminated display device 102 according to the second embodiment of the present invention has two light guides L1 (the first light guide L11 and the second light guide L21), and thus the two light guides L1. A predetermined display pattern can be separately assigned to each of these. For example, it is possible to change the emission colors of the first light source LE11 and the second light source LE21 so that the user can visually recognize a predetermined display pattern illuminated with different colors. For example, by changing the lighting timing of the first light source LE11 and the second light source LE21, it is possible to cause the user to recognize each predetermined display pattern by shifting the time separately. These can also be combined. Thus, the illuminated display device 102 of the second embodiment of the present invention can enrich the expression by illuminated display.

  Furthermore, in the illuminated display device 102 according to the second embodiment of the present invention, the two light guides L1 (the first light guide L11 and the second light guide L21) are disposed so as to face each other with a distance therebetween. Therefore, the same predetermined display pattern can be provided on each of the two light guides L1, and the same predetermined display pattern can be overlaid. For this reason, the display color of a predetermined display pattern can be changed by changing the color of the light which enters each light guide L1. In addition, the display color can be increased by the combination of the colors of the incident light. As a result, the expression by illumination display can be further enriched.

  In addition, since the formation method of the pattern layer 15 and the pattern layer 25 is the same as the formation method described in 1st Embodiment, description is abbreviate | omitted.

  Next, as in the first embodiment, the first light source LE11 and the second light source LE21 of the illumination display device 102 preferably use side-emitting LEDs, as shown in FIG. 29 (29A, 29B), is disposed at a position facing the light incident portion L1n, and is disposed with the light emitting surface LE1p facing in a direction in which light can be incident on the light incident portion L1n. Thus, in order to arrange the light incident portion L1n of the first light guide L11 and the light emitting surface LE1p of the first light source LE11 to face each other, in the second embodiment of the present invention, as shown in FIG. The wiring board 29A is placed on the spacer SP4 using the spacer SP4 for the member. Further, by accommodating the second light guide L21 and the wiring board 29B in the case K27, the light incident portion L1n of the second light guide L21 and the light emitting surface LE1p of the second light source LE21 are arranged to face each other. ing. The first light source LE11 and the second light source LE21 are supplied with power from the outside via the connector CN.

  Next, the spacer SP4 of the illumination display device 102 uses a synthetic resin material such as ABS (acrylonitrile butadiene styrene) and has a plate shape and a rectangular shape as shown in FIG. A shaped opening SP4k is formed. When the illuminated display device 102 is assembled, the spacer SP4 has the above-described height adjustment function, and as shown in FIG. 8, the second light guide L21 is accommodated in the opening SP4k. To do. The spacer SP4 also has a function of separating the first light guide L11 and the second light guide L21.

  Further, below the spacer SP4 (Z2 direction shown in FIG. 8), the wiring board 29B is disposed, and the second light source LE21 is accommodated in the opening SP4k of the spacer SP4. Then, the wiring board 29B is placed and disposed on the case K27 so that the second light guide L21 and the second light source LE21 accommodated in the same opening SP4k have substantially the same height. When the illuminated display device 102 is assembled, the spacer SP4 is fixed to the case K27 with an adhesive layer such as a double-sided tape (not shown).

  Next, the cover film CF3 of the illumination display device 102 is made of a transparent film material such as PET (polyethylene terephthalate), and has a rectangular shape matching the outer size of the case K27, as shown in FIGS. doing. The cover film CF3 is disposed so as to cover the upper surface side (Z1 side shown in FIG. 6) of the illumination display device 102, and is fixed to the case K27 with an adhesive layer such as a double-sided tape (not shown). . The user views the predetermined display pattern of the first light guide L11 and the second light guide L21 through the cover film CF3.

  Next, the reflection layer RF6 of the illumination display device 102 uses a rectangular and white film base material, and is disposed below the second light guide L21 as shown in FIG. It is placed and accommodated in the opening SP4k of the spacer SP4. The reflection layer RF6 diffuses and reflects light from the second light guide L21 side, and returns the light to the second light guide L21 side again. The reflective layer RF6 is an adhesive layer such as a double-sided tape (not shown) and is fixed to the case K27.

  Next, the case K27 of the illumination display device 102 uses a synthetic resin material such as ABS (acrylonitrile butadiene styrene) and extends from three ends of the base K27k as a base and the base K27k as shown in FIG. And a base K27b extending in the longitudinal direction (Y1 direction shown in FIG. 5) from the remaining one end of the base K27k. The case K27 accommodates the first light guide L11, the second light guide L21, the spacer SP4, and the reflective layer RF6, and mounts the wiring board 29B on which the second light source LE21 and the connector CN are mounted on the base K27b. The spacer SP4 is placed on the base K27k, and the cover film CF3 is placed on the top surface of the side wall K27s.

  Finally, the wiring substrate 29 (29A, 29B) of the illumination display device 102 preferably uses a commonly known flexible printed circuit board (FPC, Flexible printed circuits). As described above, the first light source LE11 is used. And two are provided corresponding to the second light source LE21. In addition, the first light source LE11 and the connector CN, and the second light source LE21 and the connector CN are mounted on the wiring board 29A and the wiring board 29B, respectively. The wiring board 29A on which the first light source LE11 is mounted is disposed so that the first light guide L11 and the first light source LE11 have substantially the same height, and is fixed to the spacer SP4. In addition, the wiring board 29B on which the second light source LE21 is mounted is disposed so that the second light guide L21 and the second light source LE21 have substantially the same height, and is fixed to the base K27b of the case K27. Yes. The wiring board 29A and the wiring board 29B are fixed using an adhesive layer such as a double-sided tape (not shown).

  The effects of the illuminated display device 102 according to the second embodiment of the present invention configured as described above will be collectively described below.

  In the illuminated display device 102 of the second embodiment of the present invention, the pattern layers (15, 25) formed on the surface of the light guide L1 (the first light guide L11 and the second light guide L21) are very thin. It is a silver nanowire film having fibrous silver nanowires. For this reason, even if reflected light or transmitted light enters the pattern layers (15, 25), the reflected light or transmitted light is not affected by the silver nanowires, so that the first light source LE11 and the second light source LE21 When the light is not incident from the end of the light guide L1 at the time of non-lighting, the pattern layers (15, 25) are not visually recognized by the user. On the other hand, when light enters from the end of the light guide L1 when the first light source LE11 and the second light source LE21 are turned on, the light propagating through the light guide L1 is generated on the pattern layers (15, 25). Scattered by silver nanowires. For this reason, the pattern layers (15, 25) are illuminated, and are respectively viewed as predetermined display patterns illuminated by the user. Accordingly, when the first light source LE11 and the second light source LE21 are not lit, the predetermined display pattern is not visually recognized, and when the first light source LE11 and the second light source LE21 are lit, the predetermined display pattern is illuminated. An illuminated display device 102 capable of performing the above can be provided.

  In addition, since the light guide L1 on which the pattern layers (15, 25) are formed includes the first light guide L11 and the second light guide L21, two light guides L1 are included. A predetermined display pattern can be assigned to each separately. This makes it possible to enrich the expression by illumination display, such as illumination display in different colors and illumination display with shifted timing.

  In addition, since the two light guides L1 (the first light guide L11 and the second light guide L21) are disposed so as to face each other apart from each other, the same predetermined value is applied to each of the two light guides L1. These display patterns can be provided and the same predetermined display patterns can be arranged in an overlapping manner. For this reason, the display color of a predetermined display pattern can be changed by changing the color of the light which enters each light guide L1. In addition, the display color can be increased by the combination of the colors of the incident light. As a result, the expression by illumination display can be further enriched.

  In addition, this invention is not limited to the said embodiment, For example, it can deform | transform and implement as follows, These embodiments also belong to the technical scope of this invention.

<Modification 1>
In the said 1st Embodiment, although glass was used as the light guide L1, it is not restricted to this, You may use translucent synthetic resins, such as a polycarbonate and urethane.

<Modification 2>
In the second embodiment, the first light guide L11 and the second light guide L21 are configured to be spaced apart from each other, but the first light guide L11 and the second light guide L21 are arranged side by side. It may be configured. Moreover, the structure which combined them may be sufficient.

<Modification 3>
In the second embodiment, a synthetic resin such as polycarbonate is used as the light guide L1. However, the present invention is not limited to this, and glass may be used as in the first embodiment.

<Modification 4>
In the second embodiment, two light guides L1 are used, but a configuration using three or more light guides may be used. In particular, when three or more are used, if R (Red), G (Green), and B (Blue) are used as the light source colors of the respective light guides L1, a predetermined display pattern is displayed in full color. It is possible to further enrich the expression by illumination display.

<Modification 5>
In the above embodiment, the pattern layer 5, the pattern layer 15, and the pattern layer 25 are formed on the upper surface L1u of the light guide L1, but the present invention is not limited to this, and is formed on the lower surface L1d of the light guide L1. Alternatively, the upper surface L1u and the lower surface L1d may be formed so as to be shifted in position.

  The present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the scope of the object of the present invention.

L1 light guide L11 first light guide L21 second light guide L1n light incident part 5, 15, 25 pattern layers 101, 122 Illuminated display device

Claims (3)

An illumination display device that illuminates and displays a predetermined display pattern,
A light guide having a light incident portion at an end where light from a light source enters , and a pattern layer provided on the surface of the light guide and provided with the predetermined display pattern,
The pattern layer has a silver nanowire film in which fine fibrous silver nanowires are dispersed in a transparent binder ,
The pattern layer is not visible when the light is not incident from the end of the light guide, and is illuminated when the light is incident from the end of the light guide. Illuminated display device characterized by being viewed. A plurality of the light guides;
The illuminated display device according to claim 1, wherein the pattern layer is formed on at least two of the plurality of light guides.   The illuminated display device according to claim 2, wherein the at least two light guides are disposed so as to face each other at a distance.