JP2009098313A - Lighting display arrangement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting display arrangement which is free from trouble even when installed in a severe environment such as outdoors, simple in structure, reduced in production cost, and improved in maintainability. <P>SOLUTION: The lighting display arrangement includes: one cylindrical case 111 at least one end of which is open and which has a light transmission area at least linearly extending in the axial direction; end covers 112 and 113 attached at least to the one end of the cylindrical case 111; light sources 114 arranged inside the cylindrical case 111, and emitting light to the radial outside and having a light emitting range extending in the axial direction; and a display body 120 disposed to face the light emitting range via the light transmission area outside the cylindrical case 111 and equipped with light guide plates 123 and 124 each having an incident end part extending in the axial direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an illumination display device, and more particularly, to a display device configured to obtain an illumination effect by including a light source and a light guide plate having an incident end portion on which light emitted from the light source is incident.

In general, as a lighting signboard configured to obtain a lighting effect, light emitted from a light source such as a fluorescent tube or an LED enters the light guide plate from the incident end, and propagates through the light guide plate. The illumination light is emitted from the surface of the light guide, and the signboard display is brightened by forming a printed layer on the surface of the light guide plate or disposing a transmissive display sheet on the front surface of the light guide plate. What was comprised so that it might be visually recognized is known (for example, refer the following patent documents 1 thru | or 9).
JP-A-61-199194 Japanese Patent Laid-Open No. 11-2224068 JP 2001-159874 A JP 2006-11101 A JP 2000-206911 A JP 2006-215432 A JP 2003-91250 A JP-T-2004-526192 JP 2007-41622 A

  However, among the conventional illumination display devices described above, those having a structure in which the light source and its power supply system (mounting substrate, driving circuit, etc.) and the display body constituting the advertising signboard are directly facing each other for a long time outdoors. In the case of installation, there is a possibility that water, dust, or the like that has entered the display body may contaminate or damage the light source or the power supply system. In addition, since the light source and the display body have an integrated structure, there is a problem in that work for changing or updating the display body or exchanging or repairing the light source or the power supply system becomes complicated.

  Moreover, since it is necessary to provide a seal structure in order to improve the sealing performance of the display body and the case body in order to install the illumination display device outdoors, the manufacturing cost increases, the structure becomes complicated, and the maintainability also deteriorates. There is also a problem.

  Furthermore, there is a device having a structure in which the light source and the power supply system are isolated from the display body (for example, Patent Document 3). However, the device is originally for indoor use without a sealed structure, such as outdoors. It is not suitable for use in long-term installation in severe environments.

  Therefore, the present invention solves the above-mentioned problems, and the problem is that there is no problem even in harsh environments such as installation outdoors, and the structure is simple and the manufacturing cost is reduced and maintenance is improved. An object of the present invention is to provide an illumination display device that can perform the above.

  In view of such circumstances, the illumination display device according to the first aspect of the present invention includes an integral cylindrical case having at least one end opened and a translucent region extending linearly in the axial direction, and the cylindrical case An end cover attached to the at least one end, a light source disposed inside the cylindrical case, and having a light emitting range that emits light radially outward and extends in the axial direction; and And a display body having a light guide plate that is disposed opposite to the light emission range through the light transmitting region and includes an incident end extending in the axial direction. According to the present invention, the light source is arranged inside the cylindrical case, and the light emitted from the light source is configured to enter the light guide plate of the display body through the light transmitting region of the cylindrical case. In a severe environment, contamination and damage of the light emitting part can be reliably prevented.

  In the present invention, it is preferable to further include a power supply circuit that is disposed inside the cylindrical case and supplies power to the light source. By further accommodating the power supply circuit in the cylindrical case, the weather resistance can be further improved.

  In the present invention, a light sensor that is disposed inside the cylindrical case and detects external brightness is further provided, and the power supply circuit controls the lighting state of the light source according to the output of the light sensor. Is preferred.

  In the first aspect of the invention, further comprising a fixed support frame, the light source is attached to the incident end side of the light source support part of the support frame, and the power supply circuit is connected to the incident end of the light source support part. It is desirable to be attached to the opposite side of the part.

  Next, an illumination display device according to a second aspect of the present invention includes an integral cylindrical case having at least one end opened and having translucency, an end cover attached to the at least one end of the cylindrical case, A light source that is disposed inside the cylindrical case and has a light emitting range that emits light radially outward and extends in the axial direction, and is disposed to face the light emitting range through the cylindrical case and extends in the axial direction And a sub-light source that is disposed inside the cylindrical case and emits light in a different direction from the light source. According to the present invention, it is possible to secure weather resistance and obtain an illumination effect by the auxiliary light source. The sub-light source is preferably configured to emit light outward in the radial direction around the axis.

  In the present invention, it is preferable to further include a power supply circuit that is disposed inside the cylindrical case and supplies power to the light source and the auxiliary light source.

  In the present invention, it further includes an optical sensor that is disposed inside the cylindrical case and detects external brightness, and the power supply circuit turns on the light source and the auxiliary light source according to the output of the optical sensor. Is preferably controlled.

  In the present invention, it is preferable that the auxiliary light source illuminates the display body from the outside through the cylindrical case. When the auxiliary light source illuminates the display body from the outside, the illumination effect of the display body can be further enhanced, and an appearance different from the transmitted illumination can be configured according to the display mode of the display body.

  In the second aspect of the present invention, the apparatus further comprises a cylindrical support frame fixed inside the cylindrical case, the light source and the sub-light source are attached to the outer side in the radial direction of the support frame, and the power supply circuit is It is desirable that it is attached to the inside of the support frame.

  Each said invention WHEREIN: It is preferable that the light shielding member which light-shields from the base end part by the side of the said cylindrical case of the said display body to the outer surface of the said cylindrical case is provided. According to this, since the leakage light between the cylindrical case and the display body can be prevented from being visually recognized by the light shielding member, the visibility of the display body can be improved.

  In this case, it is desirable that the light shielding member has a light reflective inner surface. According to this, the display body can be more efficiently illuminated by returning the leaked light into the light guide plate.

  In each of the above inventions, the cross-sectional shape perpendicular to the axial direction of at least one of the inner surface and the outer surface of the light-transmitting region of the cylindrical case interposed between the light source and the incident end is flat. It is preferable. According to this, it can suppress that light diffuses in the process which injects into a light-guide plate through a translucent area | region from a light source.

  Furthermore, in each of the above inventions, a cross-sectional shape orthogonal to the axial direction of at least one of the inner surface and the outer surface of the light transmitting region of the cylindrical case interposed between the light source and the incident end is configured as a convex curved surface. Preferably it is. According to this, since the light incident on the light guide plate from the light source through the light-transmitting region can be collected, the display body can be illuminated more efficiently.

  In each of the above inventions, the display body has a side frame held by the end cover, and the side portion in the axial direction of the light guide plate is held directly or indirectly by the side frame. desirable.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a schematic perspective view showing an overall configuration of an illumination display device 100 according to the present invention, FIG. 2 is a schematic vertical cross-sectional view showing a cross section along a display surface, and FIG. 3 is a schematic vertical cross-section showing a cross section orthogonal to the display surface. FIG.

  In the present embodiment, the illuminating body 110 configured in a substantially cylindrical shape, and the axis of the illuminating body 110 (hereinafter simply referred to as “axis line”, the direction is referred to as the “axis direction”), and the direction around the periphery is defined as “around the axis line”. In addition, the direction away from the axis in the direction along the plane orthogonal to the axis is referred to as “radially outward”), and the display body 120 configured in a substantially flat shape having a width direction parallel to the axis, The display body 120 has a substantially cylindrical tip covering body 130 attached to the end of the display body 120 opposite to the illumination body 110.

  The illuminator 110 includes a transparent cylindrical case 111 made of a cylindrical acrylic resin, polycarbonate resin, or the like with both ends open, and end covers 112 and 113 attached to both ends of the cylindrical case 111. It has a case body. The end covers 112 and 113 are integrally provided with support frame portions 112a and 113a that protrude toward the display body 120, respectively.

  The display body 120 has transparent display plates 121 and 122 made of acrylic resin, polycarbonate resin or the like on the front and back sides, and transparent light guide plates 123 and 124 made of acrylic resin or polycarbonate resin or the like between the display plates 121 and 122. Is arranged. A reflection sheet 125 made of white polyethylene terephthalate, metal foil or the like is interposed between the light guide plates 123 and 124. In addition, side frames 126 and 127 having a U-shaped cross section made of stainless steel, aluminum, or the like are fitted to both ends in the axial direction of these laminated structures to hold the laminated structure. One end portions of the side frames 126 and 127 are held (attached and fixed) to the support frame portions 112 a and 113 a of the end covers 112 and 113.

  Further, the tip cover 130 is a substantially cylindrical shape with both ends closed and a cylindrical frame 131 provided with slits 131a in the axial direction, and end covers 132 and 133 attached to both ends of the cylindrical frame 131. And have. The slit 131a of the cylindrical frame 131 is introduced with a tip portion on the opposite side of the display body 120 from the illumination body 110. The end covers 132 and 133 are integrally provided with support frame portions 132a and 133a that protrude toward the display body 120, respectively, and these support frame portions 132a and 133a are provided at the front ends of the side frames 126 and 127, respectively. Holding (fixing).

  Inside the case body of the illuminating body 110, a light source 114 having a light emission range extending in the axial direction as a whole is configured in a manner in which a large number of point light sources such as LEDs are arranged in the axial direction. The light source is mounted on the substrate 115. The light source 114 preferably has high directivity (for example, a directivity angle of 15 degrees or less) on the outer side in the radial direction. The substrate 115 is configured in a strip shape extending in the axial direction, and is attached on the outer surface of the support frame 116 fixed inside the cylindrical case 111. The support frame 116 is fixed to the end covers 112 and 113 by fixing means 112b and 113b such as mounting screws. The fixing means 112b and 113b can be removed from the end covers 112 and 113 by operating from the outside of the end covers 112 and 113. In addition, on the outer end surfaces of the end covers 112 and 113, mounting means 112c and 113c made of screw holes or the like for mounting on a mounting tool or a column are provided together with the fixing means 112b and 113b.

  Light shielding plates (sheets or tapes) 128 and 129 cover the front and back surfaces (surfaces of the base end portions of the display plates 121 and 122) of the base end portion (the end portion on the illumination body 110 side) of the display body 120, and these light shielding plates. 128 and 129 are integrally provided from the base end portion of the display body 120 to the outer surface of the cylindrical case 111 of the illumination body 110, and are fixed to both the illumination body 110 and the display body 120 by adhesion or the like. The light shielding plates 128 and 129 are made of a light shielding material, but are preferably made of a light reflective material such as stainless steel, aluminum, or white polyethylene terephthalate. As a result, the inner surfaces of the light shielding plates 128 and 129 become light reflective, so that not only leakage of light from the illumination body 110 and the display body 120 and from the base end portion of the display body 120 is prevented, but also the reflection of the light. As a result, the light guide efficiency of the light to the display body 120 can be increased.

  FIG. 4 is a front view of the internal structure housed and arranged inside the cylindrical case 111, and FIG. 5 is a longitudinal cross-sectional view showing a portion excluding the power supply circuit 117 and the drive circuit 118 from the internal structure in a cross section orthogonal to the axial direction. FIG. 6 and FIG. 6 are longitudinal sectional views showing the entire illuminating body 110 in a cross section along the axial direction.

  The support frame 116 as a whole is configured in a cylindrical shape extending along the same axis as the cylindrical case 111, specifically, a polygonal cylindrical shape in cross section (in the illustrated example, a hexagonal cylindrical shape). The support frame 116 is obtained by fixing two frame members 116A and 116B. End pieces 116a and 116b folded back in the radial direction (preferably outside) are provided at both ends in the axial direction of the support frame 116, and these end pieces 116a and 116b are provided with respect to the end covers 112 and 113. It is fixed by the fixing means 112b and 113b.

  A power supply circuit 117 and a drive circuit 118 that constitute a power supply system together with the substrate 115 are arranged inside the support frame 116. The power supply circuit 117 is, for example, an AC stabilized power supply. The power supply circuit 117 supplies necessary power to the drive circuit 118, and a power cord 117a to be connected to a commercial power supply (not shown) is introduced through an introduction hole in which the waterproof seal 112d of the end cover 112 is attached. Yes.

  The controller (driving circuit) 118 includes an integrated circuit chip that constitutes a CPU, a logic circuit, and other electronic components, supplies power suitable for the light source 114, and controls its lighting state. In particular, as shown in FIG. 6, when an optical sensor (photodiode or the like) 119 that detects external brightness through the light transmission window 113 d of the end cover 113 is disposed inside the cylindrical case 111. The lighting state and brightness of the light source 114 and a sub-light source 114s to be described later are controlled according to the output of the optical sensor 119. For example, the light source 114 and the auxiliary light source 114s are turned off when the outside is bright, and are turned on when the outside is dark. Further, the light source 114 and the sub-light source 114s may be turned on in a time difference manner. Further, the voltage value can be controlled according to the luminance of the light source 114 and the light source 114s to obtain a certain luminance.

  In the present embodiment, the light source 114 and the substrate 115 are attached to the outer surface of the light source support portion 116p provided on the upper portion of the support frame 116 in the figure. Two sets of sub-light sources 114 s and sub-substrates 115 s are mounted on the outer surface of the sub-light source support portion 116 s provided obliquely below the support frame 116 in the figure. The light source 114 and the substrate 115, and the two sets of the sub light source 114s and the sub substrate 115s are respectively arranged at three positions around the axis (at intervals of 120 degrees) so as to face outward in the radial direction. Each of the light source 114 and the sub-light source 114s includes a large number of LEDs and the like arranged in a staggered manner in the axial direction, and each has a light emission range extending in the axial direction.

  As indicated by a two-dot chain line in FIG. 5, the sub light source 114 s is disposed on the side of the light source 114 inside the cylindrical case 111, and the display body 120 is illuminated from the outside through the cylindrical case 111 from the sub light source 114 s. It can also be configured to be. In this case, the translucent area of the cylindrical case 111 through which the light emitted from the sub-light source 114s passes is flattened by configuring the cylindrical case 111 in a rectangular tube shape as indicated by a two-dot chain line in the drawing, and the display It is desirable to configure so that light does not diffuse or scatter in the process toward the outer surface of the body 120.

  FIG. 7 is a side view showing the overall configuration of the display body 120, and FIG. 8 is an enlarged partial longitudinal sectional view of the display body 120. As described above, the display body 120 is formed by laminating the display plates 121 and 122, the light guide plates 123 and 124, and the reflection sheet 125. However, the display body 120 is transparent between the display plates 121 and 122 and the light guide plates 123 and 124. The display sheets S1 and S2 are interposed, and a desired transmissive display is realized by the display sheets S1 and S2. However, the display sheets S1 and S2 (and the display plates 121 and 122) may be omitted by providing a desired display on the display plates 121 and 122 or the light guide plates 123 and 124.

  The aforementioned light shielding plates 128 and 129 are attached to the base end portion of the display body 120, and are configured to exhibit a light shielding function or a reflection function. In addition, a reflective sheet R made of the same material as the reflective sheet 125 is attached to the distal end portion of the display body 120, and configured to return the light reaching the end portions of the light guide plates 123 and 124 to the proximal end side. . The front end portion of the display body 120 on which the reflection sheet R is mounted is introduced through the slit 131a of the cylindrical frame 131 and accommodated therein.

  The outer surfaces of the light guide plates 123 and 124 are light emission surfaces 123a and 124a made of fine irregularities, and have a function of gradually emitting the internally propagated light propagating upward in the drawing in FIG. . The light guide plates 123 and 124 may basically be any material that emits uniform illumination light in a planar shape from the light emission surfaces 123a and 124a. For example, fine irregularities are formed on the inner surfaces. Or a light scattering printing layer may be formed. The reflection sheet 125 reflects the light emitted from the inner surfaces of the light guide plates 123 and 124 back into the light guide plate by reflection, and propagates the light in the reverse direction from the front end portion to the base end portion. The light is emitted from the light guide plate to the outside more efficiently.

  FIG. 9 is an enlarged partial longitudinal sectional view showing the structure of the boundary portion between the illuminating body 110 and the display body 120 of the present embodiment. The light emitted from the light emission range of the light source 114 is transmitted through the cylindrical case 111 and is incident from the incident end portions 123b and 124b which are the end portions constituting the light incident surfaces of the light guide plates 123 and 124. , 124 propagates upward in the figure. In this case, by arranging the light sources 114 in a staggered manner, it is possible to efficiently emit light toward both the incident ends 123b and 124b. Here, the translucent region T is a portion having the translucency of the cylindrical case 111 interposed between the light source 114 and the incident end portions 123b and 124b, and the light emitted from the light source 114 is transmitted through the translucent region T. Then, the light enters the light guide plates 123 and 124.

  In the present embodiment, the light emitted from the light source 114 of the illuminating body 110 is introduced into the light guide plates 123 and 124 through the cylindrical case 111, thereby illuminating the display body 120. Even if water or dust enters inside, there is no influence on the light source 114 and the power supply circuits 115, 117, 118, and the like. Moreover, since it becomes possible to illuminate the exterior by the sub light source 114s arrange | positioned in the cylindrical case 111, it can be used as an illumination signboard with an illumination lamp, for example. The light source 114 and the auxiliary light source 114s can be configured so that the display body 120 and the illumination lamp are lit only during a time period when the surroundings are dark, such as at night, by a power supply circuit or the like housed in the cylindrical case 111. The light source 114s may be controlled separately, and for example, time difference lighting may be performed in which the display 120 is illuminated by the light source 114 first in the evening, and the illuminating lamp is lit by the sub light source 114s later.

  FIG. 10 is an enlarged partial longitudinal sectional view showing a different configuration example. In this configuration example, a cross section (surface contour) perpendicular to the axial direction of the inner surface Tx and the outer surface Ty of the light transmitting region T interposed between the light source 114 and the incident end portions 123b and 124b is formed flat in the cylindrical case 111. It is. Accordingly, it is possible to suppress the light emitted from the light source 114 of the above embodiment from diffusing around the axis by the cylindrical inner surface and outer surface of the light transmitting region T of the cylindrical case 111. This effect can also be obtained by configuring at least one of the inner surface Tx and the outer surface Ty to be flat. In particular, since the outer surface Ty is configured to be flat, it can be brought into close contact with the base end portion of the display body 120.

  FIG. 11 is an enlarged partial longitudinal sectional view showing still another configuration example. In this configuration example, a cross section (surface contour) perpendicular to the axial direction of the inner surface Tx of the translucent region T interposed between the light source 114 and the incident end portions 123b and 124b in the cylindrical case 111 has a convex curved surface shape (lower in the drawing). (Convex shape). This not only suppresses the light radiated from the light source 114 of the above embodiment from diffusing around the axis by the cylindrical inner surface and outer surface of the cylindrical case 111, but also causes the light to be radially outward (upward in the drawing). Can be converged to. Here, the cross section (surface contour) orthogonal to the axial direction of the outer surface Ty is formed flat, as in the previous configuration example. In this configuration example, the outer surface Ty may be formed in a convex curved surface shape (convex shape in the drawing) instead of the inner surface Tx, or both the inner surface Tx and the outer surface Ty may be formed in a convex curved surface shape. .

  According to the embodiment described above, the light source 114 and the substrate 115, the substrate 115 constituting the power supply system, the power supply circuit 117, and the controller 118 (that is, the power supply circuit) are arranged inside the cylindrical case 111, so Since the light is introduced into the light guide plates 123 and 124 of the display body 120 through the light-transmitting region of the case 111, the light emitter 110 and the display body 120 can be isolated despite an extremely simple configuration. Therefore, it is possible to reliably prevent the light emitter 110 from being contaminated or damaged without a careful sealing structure even in a harsh environment such as when installed outdoors, and to reduce manufacturing costs and maintenance. It is possible to improve the performance.

  Note that the illumination display device of the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the entire cylindrical case 111 of the illuminating body 110 is made of a transparent material, but is not limited to a transparent material, and may be made of a translucent material or other translucent material. Further, only the portion between the light source 114 and the incident end portions 123b and 124b in the cylindrical case 111 may be configured as a light-transmitting region T extending linearly in the axial direction. Specifically, the cylindrical case 111 may be covered with a light shielding layer on the inner surface or the outer surface of the cylindrical body made of a translucent material, excluding the translucent region T.

  Furthermore, the cylindrical case 111 is not limited to being configured in a cylindrical shape, and may be other cylindrical shapes such as a rectangular tube shape, and is not limited to a shape in which both end portions are open, It may have a shape in which one end is closed and only the other end is opened.

  In the above embodiment, the illuminating body 110 is disposed only on one side of the display body 120. However, by providing another illuminating body 110 instead of the tip covering body 130 of the above embodiment, light is emitted from both sides of the display body 120. May be configured to be introduced. Alternatively, a plurality of sets of light sources 114 may be provided on the illuminating body 110, and a display body corresponding to each set of light sources may be provided to provide a plurality of display bodies.

The schematic perspective view which shows the whole structure of embodiment. The longitudinal cross-sectional view which shows the whole structure of embodiment by the cross section along the axial direction of an illuminating body. The longitudinal cross-sectional view which shows the whole structure of embodiment by the cross section orthogonal to the said axial direction. The front view which shows the internal structure of the illuminating body of embodiment. The longitudinal cross-sectional view shown in the cross section orthogonal to the said axial direction which abbreviate | omits some internal structures of the illuminating body of embodiment. The longitudinal cross-sectional view which shows the illuminating body of embodiment by the cross section along the said axial direction. The longitudinal cross-sectional view which shows the whole structure of the display body of embodiment by the cross section orthogonal to the said axial direction. The expanded partial longitudinal cross-sectional view which expands and shows the cross-section of FIG. The expanded partial longitudinal cross-sectional view which shows the boundary part of the illuminating body and display body of embodiment by the cross section orthogonal to an axial direction. The expanded partial longitudinal cross-sectional view which shows the said boundary part of a different structural example. The expanded partial sectional view showing the above-mentioned boundary part of another example of composition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Illumination display apparatus, 110 ... Illuminating body, 111 ... Cylindrical case, 112, 113 ... End cover, 112a, 113a ... Supporting frame part, 114 ... Light source, 115 ... Substrate, 114s ... Sub light source, 115s ... Sub substrate , 116 ... support frame, 117 ... power supply circuit, 118 ... controller (drive circuit), 120 ... display body, 121,122 ... display plate, 123,124 ... light guide plate, 125 ... reflection sheet, 126,127 ... side frame , 128, 129 ... light shielding plate

Claims (11)

An integral cylindrical case comprising at least one end open and having a light-transmitting region extending linearly in the axial direction; and
An end cover attached to the at least one end of the cylindrical case;
A light source that is disposed inside the cylindrical case and has a light emitting range that emits light radially outward and extends in the axial direction;
A display body having a light guide plate that is disposed opposite to the light emission range via the light transmitting region outside the cylindrical case and includes an incident end extending in the axial direction;
An illumination display device comprising:   The illumination display device according to claim 1, further comprising a power supply circuit disposed inside the cylindrical case and configured to supply power to the light source.   An optical sensor disposed inside the cylindrical case and detecting external brightness is further provided, and the power supply circuit controls the lighting state of the light source according to the output of the optical sensor. The illumination display device according to claim 2. An integral cylindrical case with at least one end open and translucent,
An end cover attached to the at least one end of the cylindrical case;
A light source that is disposed inside the cylindrical case and has a light emitting range that emits light radially outward and extends in the axial direction;
A display body having a light guide plate that is disposed opposite to the light emission range through the cylindrical case and includes an incident end extending in the axial direction;
A sub-light source that is disposed inside the cylindrical case and emits light in a different direction from the light source;
An illumination display device comprising:   The illumination display device according to claim 4, further comprising a power supply circuit that is disposed inside the cylindrical case and supplies power to the light source and the sub-light source.   An optical sensor that is disposed inside the cylindrical case and detects external brightness is further provided, and the power supply circuit controls the lighting state of the light source and the auxiliary light source according to the output of the optical sensor. The illumination display device according to claim 5.   The illumination display device according to claim 4, wherein the auxiliary light source illuminates the display body from the outside through the cylindrical case.   The light-shielding member which shields light from the base end part by the side of the said cylindrical case of the said display body over the outer surface of the said cylindrical case is provided, The Claim 1 thru | or 7 characterized by the above-mentioned. Lighting display device.   The illumination display device according to claim 8, wherein the light shielding member has a light reflective inner surface.   The cross-sectional shape perpendicular to the axial direction of at least one of an inner surface and an outer surface of the light-transmitting region of the cylindrical case interposed between the light source and the incident end is flat. The illumination display device according to any one of 1 to 9.   The cross-sectional shape orthogonal to the axial direction of at least one of the inner surface and the outer surface of the light-transmitting region of the cylindrical case interposed between the light source and the incident end is configured as a convex curved surface. Item 10. The illumination display device according to any one of Items 1 to 9.

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