Display System

Abstract

To provide a display system capable of displaying information when there is an object person to whom the information is transmitted.SOLUTION: A display system (130) comprises a transparent display plate (3), display portions (10a, 50b) provided on the transparent display plate (3), a light source (1), a detection portion for detecting a person, and a control portion for controlling lighting operation of the light source (1) on the basis of a detection signal output from the detection portion. The display portions (10a, 50b) radiate light by emitting light emitted from the light source (1) and incident to the interior of the transparent display plate via the display portions (10a, 50b), and the control portion slows down the blinking speed of the display portions (10a, 50b) as the person approaches the detection portion.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a display system. [Background technology]

[0002] A display system has been proposed that displays advertisements on a transparent display panel provided in a showcase (see, for example, Patent Document 1). Using this display system, people can see the inside of the showcase through the transparent display panel and at the same time, can see the advertisements displayed on the transparent display panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP2014-503835A (e.g., Figure 1, Abstract) Summary of the Invention [Problem to be solved by the invention]

[0004] However, when there is no one to view the information displayed on the display system, displaying the information on the display system results in unnecessary power consumption of the display system. Therefore, there is a demand for a display system that displays information when there is a person to whom the information is to be conveyed.

[0005] An object of the present disclosure is to provide a display system capable of displaying information when a target person to whom the information is to be conveyed is present. [Means for solving the problem]

[0006] The display system of the present disclosure comprises a transparent display panel, a display unit provided on the transparent display panel, a light source, a detection unit that detects people, and a control unit that controls the lighting operation of the light source based on a detection signal output from the detection unit, wherein the display unit emits light by light that is emitted from the light source and enters the inside of the transparent display panel and is emitted through the display unit, and the control unit slows down the blinking rate of the display unit as a person approaches the detection unit. Effect of the Invention

[0007] According to the display system of the present disclosure, information can be displayed when there is a person to whom the information is to be conveyed. [Brief description of the drawings]

[0008] [Figure 1] 1(a) and 1(b) are a front view and a side view that illustrate a schematic configuration of a display system according to a first embodiment. [Diagram 2] 1(a) and 1(b) are a front view and a side view that illustrate a schematic configuration of a display system according to embodiment 1 (including a main display unit). [Diagram 3] FIG. 3 is a functional block diagram illustrating an example of the configuration of a control system of the display system illustrated in FIGS. [Figure 4] 1(a) and 1(b) are a front view and a side view illustrating a schematic configuration of a display system according to a first modification of the first embodiment. [Diagram 5] FIG. 5 is a functional block diagram illustrating an example of the configuration of a control system of the display system illustrated in FIGS. 4(a) and (b). [Figure 6] 1(a) and 1(b) are a front view and a side view illustrating a schematic configuration of a display system according to a second modification of the first embodiment. [Figure 7] 13(a) and 13(b) are a front view and a side view illustrating a schematic configuration of a display system according to a third modification of the first embodiment. [Figure 8]7(a) and (b) are diagrams showing examples of displays on the first sub-display section and the second sub-display section shown in FIG. 7(a) and (b). [Figure 9] 13(a) and 13(b) are a front view and a side view illustrating a schematic configuration of a display system according to a fourth modification of the first embodiment. [Figure 10] 13(a) and 13(b) are diagrams illustrating schematic configurations of a display system and a transmitter according to a second embodiment. [Figure 11] 11 is a functional block diagram illustrating an example of the configuration of a control system of the display system illustrated in FIG. [Figure 12] 11 is a schematic diagram showing a guidance system to which the display system shown in FIG. 10 is applied. [Figure 13] 11 is a flowchart showing the operation of the display system shown in FIG. [Figure 14] FIG. 11 is a functional block diagram illustrating an example of the configuration of a control system of a display system according to a third embodiment. [Figure 15] 15 is a schematic diagram showing a guidance system to which the display system shown in FIG. 14 is applied. [Figure 16] 15 is a flowchart showing the operation of the display system shown in FIG. 14. [Figure 17] FIG. 13 is a diagram illustrating a schematic configuration of a display system according to a fourth embodiment. [Figure 18] FIG. 13 is a diagram illustrating a schematic configuration of a display system according to a fifth embodiment. [Figure 19] FIG. 13 is a diagram illustrating a schematic configuration of a display system according to a sixth embodiment. [Figure 20] FIG. 13 is a diagram illustrating a schematic configuration of a display system according to a seventh embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a display system according to an embodiment will be described with reference to the drawings. The following embodiments are merely examples, and the embodiments can be appropriately combined and modified.

[0010] The figure shows the coordinate axes of an XYZ Cartesian coordinate system. In the figure, the X axis is the coordinate axis in the short side direction of the transparent display panel of the display system, the Y axis is the coordinate axis in the long side direction of the transparent display panel, and the Z axis is the coordinate axis in the thickness direction of the transparent display panel. In the figure, the same symbols are used for the same or similar configurations.

[0011] First Embodiment <Display system> 1(a) and 1(b) are a front view and a side view showing a schematic configuration of a display system 100 according to the first embodiment. The display system 100 includes a transparent display panel 3, a sub-display unit 10b provided on the transparent display panel 3, and a light source 1. The sub-display unit 10b is provided on top of a main display unit 10a provided in a predetermined region, or in a region other than the region where the main display unit 10a is provided. The sub-display unit 10b emits light when light emitted from the light source 1 and incident on the transparent display panel 3 is emitted through the sub-display unit 10b. For example, light incident from the side surfaces 3t and 3u of the transparent display panel 3 is deflected (at least a part of the light travels in a different direction) by scattering or refracting (including reflection) at the sub-display unit 10b, and is then emitted to the outside of the transparent display panel 3, causing the sub-display unit 10b to emit light. When the sub-display unit 10b is in a light-emitting state, the display pattern of the sub-display unit 10b, such as characters, symbols, figures, pictures, etc., is displayed, and the observer visually recognizes the display pattern of the sub-display unit 10b as a light-emitting body. When the light source 1 is turned off, the display pattern is in a non-display state, and the observer does not visually recognize the display pattern of the sub-display unit 10b as a light-emitting body.

[0012] The display system 100 has light source groups 1a and 1b in which a plurality of light sources 1 are arranged in the X-axis direction. In this example, the light source group 1a is arranged to face a side surface 3t, which is an end surface in the +Y-axis direction of the transparent display panel 3. In this example, the light source group 1b is arranged to face a side surface 3u, which is an end surface in the -Y-axis direction of the transparent display panel 3. The transparent display panel 3 is arranged between the light source group 1a and the light source group 1b. A frame 2a is arranged in the +Y-axis direction of the light source group 1a so as to surround the light source group 1a. A frame 2b is arranged in the -Y-axis direction of the light source group 1b so as to surround the light source group 1b. The display system 100 also includes a control unit (shown in FIG. 3 described later) as a lighting control circuit that controls the lighting operation of the light source group 1a and the light source group 1b. Although two light source groups 1a and 1b are shown, the number of light source groups may be one, or may be three or more. The light source group is not limited to those arranged to face the side of the transparent display plate 3, but is not particularly limited as long as it is arranged to make light incident inside the transparent display plate 3 and guide the incident light in a predetermined direction inside the transparent display plate 3. As an example, a light guide section for making light incident inside and guiding the light may be provided at an end of the front surface 3f or back surface 3b of the transparent display plate 3, and the light source group may be arranged to face the light guide section. The control section is also composed of a processing circuit. This processing circuit may be composed of a memory that stores a program as software, and a processor that is an information processing device that executes the program.

[0013] In the illustrated example, the transparent display plate 3 has a sub-display portion 10b on the back surface 3b, which is the surface in the +Z-axis direction. The material of the transparent display plate 3 is preferably a plastic such as PMMA (polymethyl methacrylate) or PC (polycarbonate). The sub-display portion 10b is, for example, a display pattern formed by applying transparent ink containing light scattering particles. The ink is, for example, a resin ink, and silk printing is a suitable printing method.

[0014] The sub-display portion 10b may be formed by bonding a sheet-like plastic film or the like having a display pattern including light scattering particles to the rear surface 3b of the transparent display plate 3, for example.

[0015] In addition, when it is assumed that the sub-display portion 10b will be observed from a position in the -Z axis direction of the transparent display plate 3, it may be a prism-shaped portion formed by prism processing on the back surface 3b, which is the surface facing the +Z axis direction of the transparent display plate 3.

[0016] The thickness T1 of the transparent display plate 3 is, for example, 3 mm or 5 mm. The thickness T1 of the transparent display plate 3 may be other values ​​as long as the thickness is thick enough to capture the light emitted from the light source 1. The material of the transparent display plate 3 may be glass. However, since transparent ink made of resin has poor adhesion to glass, when the sub-display portion 10b is directly formed on the transparent display plate 3 using transparent ink, the material of the transparent display plate 3 is preferably plastic. When the material of the transparent display plate 3 is glass, it is possible to make the behavior of light on the transparent display plate 3 the same as that of a transparent display plate 3 made of plastic by bonding a plastic film having a display pattern to the transparent display plate 3. In addition, it is necessary to select an adhesive agent so as to eliminate the difference in refractive index at the adhesive interface between the glass and the plastic film. In addition, the thickness of the plastic film is, for example, 0.1 mm, but the thickness is not limited to this value.

[0017] 1(a) and (b) show an example in which the sub-display unit 10b is provided on the back surface 3b of the transparent display plate 3, but the sub-display unit 10b may be provided on, for example, the front surface 3f, which is the surface facing the -Z axis direction of the transparent display plate 3. However, when the sub-display unit 10b is formed by prism processing, it is preferable that the sub-display unit 10b is formed on the back surface 3b of the transparent display plate 3, which is the surface that does not face the observer. In the first embodiment, the specific configuration of the sub-display unit 10b is not particularly limited as long as the sub-display unit 10b scatters or deflects (including reflects) a part of the light that is incident from the side surfaces 3t and 3u and guided inside the transparent display plate 3 and emits it from the front surface 3f of the transparent display plate 3.

[0018] <Light source> The light source 1 is, for example, a light emitting diode (LED). The light source 1 has an emission size of 1 mm square or 3 mm square. The light source 1 of the light source group 1a emits light approximately in the -Y axis direction, and the light source 1 of the light source group 1b emits light approximately in the +Y axis direction. In consideration of the light utilization efficiency, it is preferable that the thickness T1 of the transparent display plate 3 is larger than the emission size of the light source 1.

[0019] <Light source behavior> The behavior of light rays L10 and L11 emitted from the light source 1 will be described when the sub-display section 10b is formed by silk screen printing. Light ray L10 enters the side surface 3t of the transparent display plate 3, where it is refracted and guided inside the transparent display plate 3. When the guided light ray L10 reaches the sub-display section 10b after total reflection, the light ray is scattered in the ±Z-axis directions and emits light. This makes it possible to observe the sub-display section 10b from positions in the ±Z-axis directions of the transparent display plate 3. Light ray L11 emitted from the light source 1 enters the side surface 3t of the transparent display plate 3, where it is refracted and guided inside the transparent display plate 3. The guided light ray L11 is repeatedly totally reflected, refracted at the side surface 3u, which is the end surface of the transparent display plate 3 in the -Y axis direction, and then emitted, reflected by the frame 2b, enters the side surface 3u of the transparent display plate 3 again, is guided inside the transparent display plate 3, and is scattered by the sub-display unit 10b and emits light. Here, if the light ray reaches an area in the XY plane other than the sub-display unit 10b, the light ray is totally reflected. In this way, since the light ray that does not reach the sub-display unit 10b is repeatedly guided inside the transparent display plate 3, it is preferable that the frames 2a and 2b are made of a reflective material in terms of light utilization efficiency. The surfaces of the frames 2a and 2b facing the transparent display plate 3 may have a light-reflecting surface coated with aluminum or silver.

[0020] <Configuration of First Embodiment> 2(a) and (b) are front and side views showing a schematic configuration of the display system 100 according to the first embodiment (when the main display unit 10a is provided). In FIG. 2(a) and (b), the main display unit 10a is disposed on the back surface 3b, which is the surface in the +Z-axis direction of the transparent display panel 3. The main display unit 10a is, for example, an advertising medium as an information display medium. The advertising medium is, for example, paper. In FIG. 2(a), the sub-display unit 10b is formed outside the main display unit 10a, which is the area surrounded by a dotted line. When an observer observes the display system 100 having such a structure from a position in the -Z-axis direction from the transparent display panel 3, the observer can clearly recognize the information of the main display unit 10a through the transparent display panel 3. Here, the main display unit 10a is adjacent to and overlaps the transparent display panel 3, but may be disposed at a distance from the transparent display panel 3 in the Z-axis direction.

[0021] Specifically, in the display system 100, the positional relationship between the main display unit 10a and the sub-display unit 10b when observed from a position in the -Z axis direction of the transparent display panel 3 may be maintained such that they do not overlap, as shown in Fig. 2(a). Also, a part or all of the sub-display unit 10b may be displayed within the area of ​​the main display unit 10a as long as it does not interfere with the main information displayed on the main display unit 10a.

[0022] Furthermore, as shown in FIG. 2(a), by displaying the display pattern of the sub-display section 10b in a position that can be regarded as a frame of the main display section 10a, it is possible to improve the design.

[0023] Furthermore, a liquid crystal display display unit (i.e., a screen) may be provided as the main display unit 10a. Conventionally, in order to guide a person's gaze, it was necessary to increase the brightness of the liquid crystal display screen, but by providing the sub-display unit 10b, the gaze of a person can be smoothly guided by the light emission of the sub-display unit 10b. Therefore, by using the display system 100, the gaze of a person can be effectively guided by the light emission of the sub-display unit 10b without increasing the brightness of the liquid crystal display of the main display unit 10a.

[0024] <System example> Fig. 3 is a functional block diagram showing an example of the configuration of a control system of the display system 100 shown in Fig. 2(a) and (b). As shown in Fig. 3, the display system 100 has a group of light sources 1a and 1b that direct light to a transparent display panel 3 having a sub-display unit 10b arranged so as to emphasize a main display unit 10a, a detection unit 102 having a sensor for detecting a person, and a control unit 101 including a control circuit that controls the operation of the sub-display unit 10b.

[0025] The sub-display unit 10b is disposed in front of the main display unit 10a (i.e., on the observer's side) and is disposed to highlight the main display unit 10a. The observer visually recognizes the main display unit 10a when looking at the transparent display plate 3. In addition, when the light source group is lit and the sub-display unit 10b is in a display state, the observer visually recognizes the main display unit 10a and also sees the highlighting by the sub-display unit 10b.

[0026] The control unit 101 of the display system 100 controls the display operation of the sub-display unit 10b by controlling the on / off of the light source of the sub-display unit 10b based on the detection signal output from the detection unit 102. The display system 100 controls the display operation of the sub-display unit 10b by controlling the on / off of the light source 1 (light source groups 1a, 1b) for the sub-display unit 10b, so that the observer can view the main display unit 10a at the same time as the sub-display unit 10b, thereby receiving a stronger attention alert.

[0027] Moreover, the display system 100 can be newly installed by disposing the sub-display unit 10b in front of an existing road sign.

[0028] For example, when paper advertisements are placed in commercial facilities, stations, airports, etc., it is possible to increase visibility by displaying the sub-display unit 10b and guide the gaze of an unspecified number of people to the advertisement. In addition, when a person whose gaze is guided to the advertisement sees it, the sub-display unit 10b does not interfere with the main display unit 10a, so the advertisement can be clearly recognized, and the value of the advertisement can be increased.

[0029] Furthermore, the control unit 101 may control the blinking of the sub-display unit 10b in order to guide the line of sight of a person who is located, for example, 10 m or more away from the display system 100. In this case, the blinking speed may be slowed down as the person approaches the display system 100. This makes it possible to guide the person's line of sight and allows the viewer to view the main display unit 10a without feeling uncomfortable.

[0030] Although the above-mentioned sub-display unit 10b has been described as being paper or a liquid crystal display, for example, it is possible to highlight mannequins or products installed in a shop window by installing a silk-screened sheet-like transparent display board 3 in a shop window and illuminating the display pattern of the sub-display unit 10b by illuminating light from a light source from the side of the transparent display board 3. In other words, it is possible to attach the display system of the present disclosure to the transparent wall or door surface of an existing facility or container displaying products, without modifying the existing facility.

[0031] First Modification of First Embodiment 4(a) and (b) are a front view and a side view showing a schematic configuration of a display system 110 according to a first modified example of the first embodiment. The display system 110 differs from the display system 100 shown in FIG. 2(a) and (b) in that a reflecting section 30a is provided. The reflecting section 30a is provided on the outer periphery of the main display section 10a and on the back surface of the sub-display section 10b. The reflecting section 30a is disposed on the outer periphery, which is the outer region of the main display section 10a, and reflects light emitted from the transparent display panel 3. This allows light traveling from the inside of the transparent display panel 3 toward the +Z axis direction to be reflected toward the -Z axis direction, thereby improving light utilization efficiency. The reflecting section 30a may be formed integrally with the main display section 10a.

[0032] Fig. 5 is a functional block diagram showing an example of the configuration of a control system of the display system 110. Fig. 5 shows a case where the main display unit 10a is a display unit of digital signage such as a liquid crystal display, an electronic paper display, or an organic EL display. The control unit 101 of the display system 110 controls the lighting operation of the light source groups 1a and 1b and the display operation of the main display unit 10a.

[0033] The reflective section 30a may be a holding area (also called a "bezel" or "joint") of the digital signage that is the main display section 10a. When configured in this way, the reflective effect depends on the reflective characteristics (e.g., reflectance) of the holding area, but it is possible to display the holding area like a picture frame without interfering with the information on the main display section 10a, ensuring high visibility and design.

[0034] In all other respects, the display system 110 shown in FIGS. 4(a) and (b) is the same as the display system 100 shown in FIGS. 2(a) and (b).

[0035] Second Modification of First Embodiment 6(a) and (b) are a front view and a side view that show a schematic configuration of a display system 120 according to Modification 2 of Embodiment 1. The display system 120 differs from the display system 100 shown in Fig. 2(a) and (b) in terms of the sub-display unit 40b. That is, in the display system 120, the sub-display unit 40b is arranged so as to overlap a part of the main display unit 10a or to surround a part or all of the main display unit 10a.

[0036] Specifically, as shown in FIG. 6(a), the sub-display section 40b is indicated by solid lines and forms an outer peripheral region 40b1 of the main display section 10a and a sun pattern region 40b2 so as to emphasize the sun pattern of the main display section 10a. This makes it possible to form and exaggerate the region of the main display section 10a that is to be emphasized by the sub-display section 40b. For example, by forming the sub-display section 40b so as to overlap with information (date and time, product, design, etc.) of the main display section 10a that is to be emphasized, it is possible to further increase the attention of the information. Note that the sub-display section 40b has the same function as the sub-display section 10b of FIG. 2(a) and (b) in the region other than the region of the main display section 10a. Note that the sub-display section 40b may be formed only by the region 40b2. In this case, there is an effect of improving the visibility of the main display section 10a and increasing the attention of the information.

[0037] In all other respects, the display system 120 shown in FIGS. 6(a) and (b) is the same as the display system 100 or 110 shown in FIGS. 2(a) and (b).

[0038] Third Modification of First Embodiment 7(a) and (b) are a front view and a side view that show a schematic configuration of a display system 130 according to the third modification of the first embodiment. FIG. 7(a) includes an enlarged view of a moire pattern observed on the sub-display unit 50b. The display system 130 differs from the display system 100 shown in FIGS. 2(a) and (b) in that the display system 130 has a sub-display unit 50b (i.e., a first sub-display unit 50b1 and a second sub-display unit 50b2). Specifically, the display system 130 differs from the display system 100 shown in FIGS. 2(a) and (b) in that the second sub-display unit 50b2 is formed on the front surface (second surface) 53f, which is the surface of the transparent display plate 53 facing the -Z axis direction, and the first sub-display unit 50b1 is formed on the back surface (first surface) 53b, which is the surface of the transparent display plate 53 facing the +Z axis direction.

[0039] The first sub-display section 50b1 and the second sub-display section 50b2 are formed in a pattern of a periodic structure. The pattern of the periodic structure is, for example, a stripe, a border, a dot pattern, or the like. When the light source group 1a and the light source group 1b are turned on, the first sub-display section 50b1 and the second sub-display section 50b2 are displayed in an overlapping manner. Therefore, when the display system 130 is observed from a position in the -Z axis direction from the display system 130, moire is observed, and the pattern of the sub-display section 50b is further emphasized, and visibility is improved. This enhances the effect of guiding the line of sight. Here, moire is a visually occurring stripe pattern. Moire occurs when the periodic patterns are overlapped and the period is shifted.

[0040] 8(a) and (b) are diagrams showing display examples of the first sub-display section 50b1 and the second sub-display section 50b2 shown in FIG. 7(a) and (b). FIG. 8(a) shows a linear pattern as an example of the first sub-display section 50b1, and FIG. 8(b) shows a linear pattern as an example of the second sub-display section 50b2. Even if the first sub-display section 50b1 and the second sub-display section 50b2 are dot patterns, moire can be observed. In FIG. 8(a) and (b), the first sub-display section 50b1 and the second sub-display section 50b2 are formed on both sides of the transparent display plate 53, but moire may be generated by using two transparent display plates 53 on which the sub-display sections are printed.

[0041] In order to guide the gaze of a person located at a position that is a predetermined distance (e.g., 10 m) or more away from the display system 130, the control unit 101 turns on the light source groups 1a and 1b to display a moire pattern on the first sub-display unit 50b1 and the second sub-display unit 50b2, and the moire pattern guides the gaze of the observer in the direction where the main display unit 10a is installed. When a person approaches the main display unit 10a, the light source groups 1a and 1b are turned off, and the first sub-display unit 50b1 and the second sub-display unit 50b2 formed with transparent ink become invisible, so that the main display unit 10a can be observed without any discomfort caused by the moire pattern.

[0042] In all other respects, the display system 130 shown in FIGS. 7(a) and (b) is the same as the display system 100, 110 or 120 shown in FIGS. 2(a) and (b).

[0043] Fourth Modification of First Embodiment 9(a) and (b) are a front view and a side view that roughly show the configuration of a display system 140 according to Variation 4 of Embodiment 1. The display system 140 differs from the display system 100 shown in FIGS. 2(a) and (b) in that the sub-display unit 70b is present within the area of ​​the main display unit 10a.

[0044] The main display unit 10a is, for example, a display having a periodic structure such as a liquid crystal display. By forming a pattern having a periodic structure on the sub-display unit 70b, a moire pattern occurs when the sub-display unit 70b is superimposed on the main display unit 10a, and it is possible to improve visibility. It is preferable to form the sub-display unit 70b in a location (for example, near a corner) that does not interfere with the main information on the main display unit 10a. It is also possible to form the sub-display unit 70b outside the area of ​​the main display unit 10a. In other words, the sub-display unit 70b may be formed both inside and outside the area of ​​the main display unit 10a.

[0045] In all other respects, the display system 140 shown in Figures 9(a) and (b) is the same as the display systems 100, 110, 120 or 130 described above.

[0046] Second Embodiment The second embodiment relates to a guidance system to which the display system according to the first embodiment is applied. In the second embodiment, a transmitter is lent as a terminal to a user such as a facility visitor. Figs. 10(a) and (b) are diagrams that show a schematic configuration of a display device (250 or 260 in Figs. 11 and 12 described later) and a transmitter 210 of a display system 200 according to the second embodiment. As the display device 250 or 260 in the display system 200, the display system according to the first embodiment (100, 110, 120, 130, or 140, etc.) can be used.

[0047] The display system 200 is a guidance system that uses, for example, a route setting display board (250 in Figs. 11 and 12 described later) equipped with a touch panel type operation input unit and a guide display board (260 in Figs. 11 and 12 described later). When a user touches a destination on the route setting display board, guidance information for guiding and directing the route to the destination is displayed, and a transmitter 210 is lent to the user. The transmitter 210 may be provided from a transmitter storage unit provided in the display system 200. The transmitter 210 can display, for example, a combination of four color marks, and can display identification patterns, which are display patterns corresponding to 16 types of identification information, by combining the four color marks and the lighting and extinguishing of each mark. Note that a transmitter on which an identification pattern is printed in advance may be lent to the user as the transmitter 210. Note that the number of combinations of marks is not limited to the above.

[0048] Destination information and an identification pattern of the transmitter 210 are recorded in the transmitter 210. When a user carrying the transmitter 210 approaches a guide display board (260 in Figs. 11 and 12 described later) of the display system 200, the detection unit detects radio waves transmitted from the transmitter 210, and the lighting circuit of the control unit displays a display equivalent to the display of the transmitter 210 (in this example, any one of 16 types of identification information by a combination of four color marks displayed by the transmitter 210) on the sub-display unit 200b, and the main display unit 10a displays route guidance to the destination. The display of the route guidance to the destination is, for example, an arrow showing the route to the destination.

[0049] When the user carrying the transmitter 210 arrives at the destination, the route guidance ends. At the destination, there is a transmitter recovery unit (not shown) for storing the transmitter 210, and when the transmitter 210 is placed in the transmitter recovery unit, a coupon corresponding to the destination is issued. The coupon is, for example, a discount coupon that can be used at a store at the destination. This allows the user to arrive at the destination smoothly and also to take advantage of the discount provided by the coupon. Furthermore, the coupon increases the certainty of the return of the transmitter 210.

[0050] In this way, by displaying one of 16 types of identification patterns on the sub-display unit 200b without interfering with the guidance display displayed on the main display unit 200a of the route setting display board or the guide display board, it is possible to inform who the guidance display on the main display unit 200a is intended for, and by combining the main display 200a and the sub-display unit 200b, it is possible to display on multiple transmitters carried by multiple people. In other words, when the recognition pattern displayed on the transmitter 210 carried by the user matches the identification pattern displayed on the sub-display unit 200b, the user can recognize that the guidance information on the main display unit 10a is guidance information for the user's destination, and can move smoothly to the destination.

[0051] Furthermore, when the information display board (260 in Figs. 11 and 12 described later) of the display system 200 detects radio waves from the transmitter 210, the information display board of the display system 200 may control the light source group to blink the sub-display unit 200b. This function makes it easier for customers passing by to recognize that the display is being displayed. Furthermore, by not turning on the transparent display board 3 (including the main display unit 200a and the sub-display unit 200b) until the radio waves from the transmitter 210 are detected, it is possible to avoid confusing other users.

[0052] In Fig. 10(a), when the sub-display unit 200b is to be illuminated in yellow, the light source 1dy is illuminated, when the sub-display unit 200b is to be illuminated in green, the light source 1dg is illuminated, when the sub-display unit 200b is to be illuminated in red, the light source 1dr is illuminated, and when the sub-display unit 200b is to be illuminated in blue, the light source 1db is illuminated. It is preferable that the light source 1d has high directivity so that the light does not spread in the Y-axis direction. In order to improve the directivity, a collimator lens may be disposed in the +X-axis direction of the light source 1d, and the main display unit 10a is illuminated by the light emitted from the light source group 1c.

[0053] The main display section 200a and the sub-display section 200b are formed by forming a pattern by silk printing using a transparent resin ink containing light scattering particles. In FIG. 10(a), each color is arranged separately on the same plane, but each color may be displayed by stacking a plurality of transparent display plates 3. In that case, since a light source corresponding to each transparent display plate 3 is arranged, there is no need to consider the directivity of light. Furthermore, the sub-display section 200b may be printed in color, so that the light source emission color may be white.

[0054] FIG. 10(a) shows a case of four-color display, but symbols or images may be displayed. In order to realize an inexpensive system with a simple configuration, it is preferable to display a fixed pattern rather than a moving image. In the above guidance display system, a transmitter is not necessarily required, and for example, if the display pattern is such that it is possible to know who the information is for without a transmitter, the transmitter may be omitted. As an example, in a guidance display board in which the main display unit 200a switches between guidance to a men's restroom and guidance to a women's restroom, identification information such as letters, symbols, or images that can be identified as being for men or women may be prepared as a display pattern for the sub-display unit 200b, and the display of the identification information on the sub-display unit 200b may be switched in synchronization with the guidance on the main display unit 200a.

[0055] FIG. 11 is a functional block diagram that shows a schematic configuration of a display system 200 according to the second embodiment. FIG. 12 is a schematic diagram showing a guidance system to which the display system 200 shown in FIG. 10 and FIG. 11 is applied. As shown in FIG. 11 and FIG. 12, the display system 200 has display devices 250 and 260 that are communicatively connected to a transmitter 210. The display system 200 may have only one of the display device 250 and the display device 260. The display device 250 and the display device 260 have light source groups 1a and 1b having a light source 1 that emits light for emitting light to the sub-display unit 200b, a main display unit 200a such as a liquid crystal display, a communication unit 203 that communicates with the transmitter 210, an operation input unit 204 that performs user operations such as a touch panel, and a control unit 201 that includes a control circuit that controls the lighting operation of the light source groups 1a and 1b and the display operation of the main display unit 200a. 11, the display devices 250 and 260 include a transparent display panel 3 equipped with a sub-display unit 200b as an incident destination of the light emitted from the light source groups 1a and 1b. For ease of explanation, the display devices 250 and 260 are described as having the same configuration, but the display devices 250 and 260 may have different configurations.

[0056] For example, when the display device 250 is installed as the above-mentioned route setting display board, the display device 250 may include the control unit 201, the communication unit 203, and the operation input unit 204. That is, the display device 250 may not include the configuration of the above-mentioned display system (the display system of the first embodiment) such as the light source groups 1a and 1b, the main display unit 200a, and the sub display unit 200b. In other words, the display device 250 as a route setting display board may have a function of accepting a user operation, setting a destination and determining identification information corresponding to the user, and notifying the transmitter 210 of the identification information together with the destination information and storing the information. For example, the control unit 201 of the display device 250 executes a process of having the user set a destination via the operation input unit 204, a process of determining identification information corresponding to the user, and a process of notifying the transmitter 210 of the determined identification information together with the destination information via the communication unit 203. The destination information is not necessarily required, and the display device 250 is not necessarily limited to the above configuration as long as the identification information held in the transmitter 210 and the contents displayed on the main display unit 200a of the display device 260 are associated with each other. For example, when the destination is limited within a facility, the identification information corresponding to the destination can be determined so that the transmitter 210 does not hold the destination information. In this case, the identification information may be interpreted as including the destination information. The display device 250 as a route setting display board further includes the light source groups 1a and 1b, the main display unit 200a, and the sub-display unit 200b (not shown), and the main display unit 200a explains the method of future route guidance while actually displaying an identification pattern corresponding to the user's identification information on the sub-display unit 200b. This makes it possible to more clearly explain to the user the relationship between the identification information held in the transmitter 210 and the identification pattern displayed on the guidance display that will appear thereafter (whether the information is for the user or not).

[0057] Also, for example, when the display device 260 is installed as the above-mentioned guidance display board, the display device 260 may include the control unit 201, the communication unit 203, the light source groups 1a and 1b, the main display unit 200a, and the sub-display unit 200b (not shown). That is, the operation input unit 204 may be omitted in the display device 260. In other words, the display device 260 as a guidance display board may have a function of receiving identification information and destination information from the transmitter 210, displaying guidance according to the destination on the main display unit 200a, and displaying an identification pattern corresponding to the identification information on the sub-display unit 200b. For example, when the control unit 201 of the display device 260 receives the identification information and the destination information from the transmitter 210, the control unit 201 executes a process of controlling the lighting operation of the light source groups 1a and 1b corresponding to the display operation of the sub-display unit 200b and controlling the display operation of the main display unit 200a based on the received information. It should be noted that the destination information is not necessarily required, and the destination information can be omitted if the content to be displayed on the main display unit 200a can be specified from the identification information.

[0058] The communication unit 203 has a function of receiving radio waves transmitted from the transmitter 210 and reading data from the transmitter 210, for example. The communication unit 203 may further have a function of transmitting radio waves to the transmitter 210 and writing data to the transmitter 210. The main display unit 200a is the same as the main display unit 10a in the first embodiment. The light source groups 1a and 1b cause light to enter the transparent display plate 3 having the sub-display unit 200b. The sub-display unit 200b is the same as the sub-display unit 10b in the first embodiment. However, in the second embodiment, the sub-display unit 200b of the display device 250 and the display device 260 displays an identification pattern (210b in FIG. 10(b)) corresponding to the user's identification information acquired from the transmitter 210. As described above, the identification information does not necessarily have to identify the user, and may be information that can identify the contents displayed on the main display unit 200a, such as a destination.

[0059] In the example shown in FIG. 12, the display system 200 has a display device 250 and a display device 260. The display device 250, for example, receives destination information from the user 220, determines identification information of the user 220 (a user heading to a destination), stores the determined identification information and destination information in the transmitter 210, and then causes the user 220 to carry the transmitter 210. When the user 220 carrying the transmitter 210 that stores the destination information and identification information approaches, the display device 260 receives information from the transmitter 210, and based on the received information, displays a display showing a route to the destination on the main display unit 200a and displays an identification pattern corresponding to the identification information on the sub-display unit 200b. When the same identification pattern as the identification pattern 210b displayed on the user's own transmitter 210 is displayed on the sub-display unit 200b, the user can move toward the destination by looking at the guidance information (for example, an arrow) displayed on the main display unit 200a. In FIG. 12, the display device 260 is installed only at one intersection, but it may be installed at multiple locations. When the route is complicated, the display devices 260 light up or blink when the user 220 approaches, thereby alerting the user and guiding the user smoothly to the destination. The display devices 250 and 260 may be stand-type devices, or may be installed or embedded in a wall or floor. When installed on the floor, the display devices 250 and 260 do not obstruct the route, and the user 220 can recognize the display contents. In the above example, the main display unit 200a is configured with a liquid crystal display, but the main display unit 200a may be a transparent panel or a paper medium, as in the first embodiment.

[0060] FIG. 13 is a flowchart showing the operation of the display system 200 shown in FIG. 10. First, a destination is input to the display device 250, which is a system for inputting a destination, and a transmitter 210 that holds identification information corresponding to the user is rented out (step S11). The transmitter 210 displays an identification pattern 210b corresponding to the held identification information (step S12). In addition, at the same time as the lending of the transmitter 210, the display device 250 may display, by lighting control of the light source 1, on the sub-display unit 200b, an identification pattern 210b corresponding to the user's identification information held in the transmitter 210, and may display guidance information such as an arrow indicating a route to the destination on the main display unit 200a. When the user 220 approaches the display device 260, the communication unit 303 of the display device 260 receives the identification information and destination information from the transmitter 210. Based on the information received from the transmitter 210, the control unit 201 of the display device 260 controls the lighting of the light source 1 to display the identification pattern 210b on the sub-display unit 200b, and displays guide information such as an arrow showing the route to the destination on the main display unit 200a (step S13). When the user carrying the transmitter 210 arrives at the destination and returns the transmitter 210, a coupon is issued.

[0061] As a result, when there are many facility users, the sub-display unit 200b displays an identification pattern corresponding to the user's identification information while the main display unit 10a displays a guide corresponding to the user, so that the facility users can be appropriately guided to use the facility even when there are an unspecified number of facility users, and congestion can be alleviated and safety can be ensured. Note that when there are few facility users, it is also possible to switch to a display method in which the main display unit 200a displays information for an unspecified number of users while the sub-display unit 200b highlights the main display unit 200a, as in the first embodiment, without identifying the users.

[0062] In addition, the transparent display plate 3 in Fig. 10(a) displays the main display section 10a and the sub-display section 200b as a single sheet, but by stacking multiple transparent display plates 3 each having only the main display section 10a in the Z-axis direction, it is possible to display arrows in multiple directions. Also, multiple arrow patterns (one arrow pattern in Fig. 10(a)) may be formed on the main display section 10a, and the desired arrow may be lit up by lighting control. This is the same in the other embodiments.

[0063] Third Embodiment The third embodiment relates to a guidance system to which the display system according to the first embodiment is applied. The third embodiment differs from the second embodiment in that a mobile terminal such as a smartphone or a mobile phone is used as a terminal instead of the transmitter in the second embodiment.

[0064] FIG. 14 is a functional block diagram that shows an example of the configuration of a control system of the display system 300 according to the third embodiment. FIG. 15 is a schematic diagram showing a guidance system to which the display system 300 shown in FIG. 14 is applied. As shown in FIG. 14 and FIG. 15, the display system 300 has display devices 350 and 360 that are communicatively connected to a mobile terminal 310. The display system 300 may have only one of the display device 350 and the display device 360. The display device 350 and the display device 360 ​​have light source groups 1a and 1b having a light source 1 that emits light for emitting light to the sub-display unit 300b, a main display unit 300a such as a liquid crystal display, a communication unit 303 that communicates with a mobile terminal 310 carried by a user, an operation input unit 304 that performs user operations such as a touch panel, and a control unit 301 including a control circuit that controls the lighting operation of the light source groups 1a and 1b and the display operation of the main display unit 300a. Although not shown in FIG. 14, the display devices 350 and 360 include a transparent display panel 3 provided with a sub-display unit 300b as an incident destination of the light emitted from the light source groups 1a and 1b. For ease of explanation, the display devices 350 and 360 are described as having the same configuration, but the display devices 350 and 360 may have different configurations. The display device 350 may be regarded as a display device 250 of the second embodiment in which the communication unit 203 is replaced with the communication unit 303. The display device 360 ​​may be regarded as a display device 260 of the second embodiment in which the communication unit 203 is replaced with the communication unit 303. However, in this embodiment, instead of determining the user's identification information when a destination is input and storing the user's identification information in the transmitter 210, the display device 350 stores information associating the user's identification information input from the mobile terminal 310 with the destination information in the mobile terminal 310, or stores the information in the display device 360 ​​or a server device accessible by the display device 360 ​​via another communication network.

[0065] The communication unit 303 has a function of receiving radio waves transmitted from the mobile terminal 310 and reading data from the mobile terminal 310, for example. The communication unit 303 may further have a function of transmitting radio waves to the mobile terminal 310 and writing data to the mobile terminal 310. The main display unit 300a is the same as the main display unit 10a in the first embodiment. The light source groups 1a and 1b cause light to enter the transparent display plate 3 having the sub-display unit 300b. The sub-display unit 300b is the same as the sub-display unit 10b in the first embodiment. However, in the third embodiment, the sub-display unit 300b of the display device 350 and the display device 360 ​​displays an identification pattern (similar to 210b in FIG. 10(b)) corresponding to the user's identification information acquired from the mobile terminal 310. As described above, the identification information does not necessarily have to identify the user, and may be information that can identify the contents displayed on the main display unit 200a, such as a destination. In this example, it is assumed that the application of this system having a function of exchanging at least identification information between the mobile terminal 310 and the display device 350 and the display device 360 ​​is installed.

[0066] In the example shown in FIG. 15, the display system 300 has a display device 350 and a display device 360. The display device 350, for example, accepts destination information from the user 320, receives identification information of the user 320 (a user heading to a destination), and stores the received identification information and destination information in the mobile terminal 301 or another device on the network in association with each other. When the user 320 carrying the mobile terminal 310 that stores the identification information associated with the destination information approaches, the display device 360 ​​receives information from the mobile terminal 310, and displays a display showing a route to the destination on the main display unit 300a based on the received information, and displays an identification pattern (similar to 200b in FIG. 10(a)) corresponding to the identification information on the sub-display unit 300b. When the same identification pattern as the identification pattern 310b displayed on the user's own mobile terminal 310 is displayed on the sub-display unit 300b, the user can move toward the destination by looking at the guidance information (for example, an arrow) displayed on the main display unit 300a. In FIG. 15, the display device 360 ​​is installed at only one location on the crossroads, but it may be installed at multiple locations. When the route is complicated, each display device 360 ​​lights up or blinks when the user 320 approaches, thereby alerting the user and allowing the user to be guided smoothly to the destination. When the display devices 360 are installed on the display device 350 and the floor, the user 320 can recognize the main display unit 300a and the sub-display unit 300b without the display device 350 and the display device 360 ​​obstructing the route. In the above example, the main display unit 300a is configured with a liquid crystal display, but the main display unit 300a may be a transparent panel or a paper medium, as in the first embodiment.

[0067] Also, for example, in a building (e.g., a facility) with many users, when there are many users with the same destination, excessive congestion at the destination can be avoided by stopping the illumination of the sub-display unit 300b for a specific user when the user passes in front of the transparent display panel 3 of the display device 360 ​​installed on the floor or wall. Also, by illuminating the main display unit 10a, congestion in the facility can be alleviated by guiding an unspecified number of users.

[0068] FIG. 16 is a flowchart showing the operation of the display system 300 shown in FIG. 14. First, information indicating the destination and identification information are transmitted from the mobile terminal 310 to the display device 350 of the display system 300 (step S21). Note that the input of information is not limited to the method of inputting information from the mobile terminal 310, and for example, it can be performed via the operation input unit as in the second embodiment. Next, the mobile terminal 310 displays the identification pattern 310b on its display screen (step S22). Also, the control unit 301 of the display device 350 associates the user's identification information with the destination information and stores it in the mobile terminal 310 or another device on the network. When the user 330 approaches, the display device 360 ​​receives the identification information of the mobile terminal from the mobile terminal 310 and information indicating the destination, if any. Based on the information received from the mobile terminal 310, the control unit 301 of the display device 360 ​​controls the lighting of the light source 1 to cause the sub-display unit 300b to display the identification pattern 310b, and causes the main display unit 300a to display guidance information such as an arrow indicating the route to the destination (step S23).

[0069] As a result, when there are many facility users, the sub-display unit 200b displays an identification pattern corresponding to the user's identification information while the main display unit 10a displays a guide corresponding to the user, so that the facility users can be appropriately guided to use the facility even when there are an unspecified number of facility users, and congestion can be alleviated and safety for the unspecified number of facility users can be ensured. Note that when there are few facility users, it is also possible to switch to a display method in which the main display unit 300a displays an unspecified number of displays while the sub-display unit 300b highlights the main display unit 300a without identifying the user, as in the first embodiment.

[0070] Also, by stacking multiple transparent display plates 3 each having only the main display unit 300a in the Z-axis direction, it is possible to display arrows in multiple directions. Also, multiple arrow patterns may be formed on the main display unit 300a, and the desired arrow may be lit up by lighting control.

[0071] In other respects than those mentioned above, the second embodiment is the same as the third embodiment.

[0072] Fourth Embodiment FIG. 17 is a diagram showing a schematic configuration of a display system 400 according to the fourth embodiment. As shown in FIG. 17, the display system 400 guides a driver of a vehicle traveling on a road 801 on which the vehicle is traveling to change lanes (courses). The display system 400 includes a detection unit 402 having a sensor for detecting a traveling vehicle, a plurality of display devices 403, 404, 405 arranged on the vehicle travel lane of the road 801, and a control unit 401 including a control circuit for controlling the operation of the display devices 403, 404, 405. The display devices 403, 404, 405 have, for example, arrows as main display units 403a, 404a, 405a and highlighting as sub-display units 403b, 404b, 405b, similar to the display system 100 shown in FIG. 2(a) and (b). The detection unit 402 may use a camera or a radar.

[0073] Also, only the arrow in Fig. 17 may be displayed as the sub-display. In this case, the entire surface of the transparent display board, except for the area where the sub-display is provided, becomes the main display. In other words, the main display in this case is a transparent area on the transparent display board that allows a person to view information that should be recognized by a person, such as the actual road conditions or surrounding environment that prompts a lane change, in addition to the guidance display that prompts a lane change.

[0074] A control unit 401 of the display system 400 controls the turning on and off of light sources of the display devices 403, 404, and 405 based on a detection signal output from a detection unit 402, thereby controlling the display operation of the sub-display unit.

[0075] The area of ​​the guidance display encouraging lane changes may be limited to the total area of ​​the display area of ​​the transparent display board (for example, the display area of ​​the guidance display may be set to 50% or less of the total area of ​​the display area), or the guidance display may be flashed or lit only when the vehicle approaches to a certain extent, thereby emphasizing the guidance display while ensuring an area or time in which the back of the transparent display board can be seen. By such measures, it is possible to achieve both the visibility of the information that is originally intended to be recognized and an eye-catching effect, i.e., the effect of directing people's attention to the target.

[0076] Furthermore, guidance for changing lanes can be more effective by controlling the lighting of the sub-display unit based on the detection signal output from the detection unit 402. Furthermore, energy can be saved by not lighting the sub-display unit when no vehicle is approaching.

[0077] Fifth Embodiment Fig. 18 is a diagram illustrating a schematic configuration of a display system 500 according to embodiment 5. As illustrated in Fig. 18, the display system 500 has a sub-display unit 503b arranged to emphasize the main display unit 503a when a road sign lamp (i.e., a main display unit 503a) for calling the driver's attention is installed above a road 801 on which a vehicle is traveling, a detection unit 502 having a sensor for detecting a traveling vehicle, and a control unit 501 including a control circuit for controlling the operation of the sub-display unit 503b.

[0078] The sub-display unit 503b is disposed in front of the main display unit 503a (i.e., on the observer's side) and emphasizes the main display unit 503a, for example, similar to the sub-display unit 10b of the display system 100 shown in Figs. 2(a) and (b). When the observer, who is the driver of the vehicle, sees the road sign lights at the top of the road 801, he / she visually recognizes the main display unit 503a and also sees the highlighting by the sub-display unit 503b. The main display unit 503a displays information to call the driver's attention, such as "Watch your speed," "No overtaking," and "Watch your following distance." The sub-display unit 503b is installed so as not to impede the recognition of the display information of the main display unit 503a.

[0079] The control unit 501 of the display system 500 controls the display operation of the sub-display unit 503b by controlling the turning on and off of the light source of the sub-display unit 503b based on a detection signal output from the detection unit 502. The control unit 501 may change the lighting content based on the time period (i.e., time information), the traffic volume of the road 801 (i.e., traffic condition information), etc. The time information and traffic condition information are obtained from the outside as external information, for example.

[0080] The display system 500 controls the turning on and off of the light source of the sub-display unit 503b and controls the display operation of the sub-display unit 503b, so that the driver of the vehicle can view the main display unit 503a at the same time as the sub-display unit 503b, thereby receiving an even stronger warning.

[0081] Moreover, the display system 500 can be newly installed by disposing the sub-display unit 503b in front of an existing road sign.

[0082] Sixth Embodiment Fig. 19 is a diagram illustrating a schematic configuration of a display system 600 according to embodiment 6. As illustrated in Fig. 19, when a road sign lamp (i.e., a main display unit 603a) for calling the driver's attention is installed on a road 801 on which a vehicle travels, the display system 600 has a sub-display unit 603b arranged to emphasize the main display unit 603a, a detection unit 602 equipped with a sensor for detecting a traveling vehicle, and a control unit 601 including a control circuit for controlling the operation of the sub-display unit 603b.

[0083] The sub-display unit 603b is disposed in front of the main display unit 603a (i.e., on the observer's side) and emphasizes the main display unit 603a, similar to the sub-display unit 10b of the display system 100 shown in Figures 2(a) and (b), for example. When the observer, who is the driver of the vehicle, looks at the sub-display unit 603b along the line of sight 604, he or she views the main display unit 603a through an opening 605 provided in the sub-display unit 603b. At the same time, the observer sees the highlighting by the sub-display unit 603b.

[0084] A control unit 601 of the display system 600 controls the turning on and off of the light source of the sub-display unit 603b based on a detection signal output from the detection unit 602, thereby controlling the display operation of the sub-display unit 603b.

[0085] The display system 600 controls the turning on and off of the light source of the sub-display unit 603b and controls the display operation of the sub-display unit 603b, so that the driver of the vehicle can view the main display unit 603a at the same time as the sub-display unit 603b, thereby receiving an even stronger warning.

[0086] Moreover, the display system 600 can be newly installed by disposing the sub-display unit 603b in front of an existing road sign.

[0087] Seventh Embodiment Fig. 20 is a diagram illustrating a schematic configuration of a display system 700 according to the seventh embodiment. As illustrated in Fig. 20, the display system 700 uses an arrow to indicate a guidance direction to a driver of a traveling vehicle when the vehicle is traveling around a curve on a road 801. The display system 700 includes a detection unit 702 having a sensor for detecting a traveling vehicle, a plurality of display devices 703, 704, and 705 arranged on a fence 802 of the road 801 along the road 801, and a control unit 701 including a control circuit for controlling the operation of the display devices 703, 704, and 705.

[0088] The display devices 703, 704, and 705 have main display units 703a, 704a, and 705a and sub-display units 703b, 704b, and 705b, similar to the display system 100 shown in Figures 2(a) and (b), for example. However, the display devices 703, 704, and 705 may have the structures of the other display systems described above.

[0089] A control unit 701 of the display system 700 controls the turning on and off of light sources of the display devices 703, 704, and 705 based on a detection signal output from a detection unit 702, and controls the display operations of the sub-display units 703b, 704b, and 705b.

[0090] When the main display units 703a, 704a, and 705a are arrows printed on a transparent display plate, by controlling the on / off of the light sources of the display devices 703, 704, and 705 and controlling the display operation of the sub-display units 703b, 704b, and 705b, the driver of the vehicle can feel as if the arrows indicating the guiding direction are being displayed in the air around the curves in the road 801. Furthermore, the driver of the vehicle can visually recognize the arrows of the main display units 703a, 704a, and 705a emphasized by the display operation of the sub-display units 703b, 704b, and 705b, and can receive an even stronger attention.

[0091] Furthermore, by increasing the size of the transparent display plates of the display devices 703, 704, and 705 to fit the space where they are installed, the displayed patterns can be made to give the impression of floating.

[0092] Moreover, the display system 700 can be newly installed by arranging the sub-display units 703b, 704b, and 705b in front of an arrow that is an existing road sign.

[0093] The above-described embodiments (including the modified examples) can be combined as appropriate. [Explanation of symbols]

[0094] 1 light source, 1a, 1b light source group, 2a, 2b frame, 3, 53 transparent display board, 3f, 53f front, 3b, 53b back, 3t, 3u, 53t, 53u side, 10a, 200a, 300a, 403a, 404a, 405a, 503a, 603a, 703a, 704a, 705a Main display section, 10b, 40b, 50b, 70b, 200b, 300b, 403b, 404b, 405b, 503b, 603b, 703b, 704b, 705b Sub-display section, 50b1 First sub-display section, 50b2 Second sub-display section, 30a Reflective section, 100, 110, 120, 130, 140, 200, 300, 400, 500, 600, 700 display system, 101, 201, 301, 401, 501, 601, 701 control unit, 102, 402, 502, 602, 702 detection unit, 203, 303 communication unit, 210 transmitter, 310 mobile terminal.

Claims

1. A transparent display panel, A display unit provided on the transparent display plate; A light source; A detection unit that detects a person; A control unit that controls a lighting operation of the light source based on a detection signal output from the detection unit; Equipped with the display unit emits light by the light emitted from the light source and entering the inside of the transparent display plate and exiting through the display unit; The control unit slows down the blinking rate of the display unit as the person approaches the detection unit. A display system comprising:

2. A transparent display panel, A display unit provided on the transparent display plate; A light source; A vehicle detection unit that detects a traveling vehicle and outputs a detection signal; A control unit that controls a lighting operation of the light source; Equipped with the display unit emits light by the light emitted from the light source and entering the inside of the transparent display plate and exiting through the display unit; The transparent display panel is placed on or near a road, The control unit controls a lighting operation of the light source based on a detection signal of the vehicle, The control unit changes the lighting operation of the light source based on at least one of time information and traffic condition information. A display system comprising:

Images