Display device

Abstract

To provide a display device in which even if a plurality of evacuation directions are displayed, the visibility of prohibition of the evacuation directions is good.SOLUTION: A display device 10 comprises a first display part 30, a first light guide plate 51, and a second light guide plate 52. In the first display part 30, a first evacuation direction pattern 35, and a second evacuation direction pattern 36 whose direction is different from that of the first evacuation direction pattern 35 are displayed. The first light guide plate 51 is arranged on the side of a front surface of the first display part 30, and is provided with a first prohibition pattern 57 at a position overlapping with the first evacuation direction pattern 35, on a surface opposite to a surface facing the first display part 30. The second light guide plate 52 is arranged on the side of a front surface of the first light guide plate 51, and is provided with a second prohibition pattern 58 at a position overlapping with the second evacuation direction pattern 36, on a surface facing the first light guide plate 51.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present embodiment relates to a display device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is a display device that includes a first display section that displays guidance and a second display section that displays a message prohibiting guidance on the front side of the first display section.

[0003] Some guidance signs display multiple evacuation directions, and even when multiple evacuation directions are displayed, it is desirable for the indications of prohibited evacuation directions to be easily visible. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-104659 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a display device that provides good visibility of prohibited evacuation directions even when a plurality of evacuation directions are displayed. [Means for solving the problem]

[0006] The display device of the embodiment includes a first display unit, a first light guide plate, and a second light guide plate. The first display unit displays a first evacuation direction pattern and a second evacuation direction pattern in a direction different from the first evacuation direction pattern. The first light guide plate is disposed on the front side of the first display unit, and a first prohibition pattern is provided on a surface opposite to the surface facing the first display unit at a position overlapping with the first evacuation direction pattern. The second light guide plate is disposed on the front side of the first light guide plate, and a second prohibition pattern is provided on a surface facing the first light guide plate at a position overlapping with the second evacuation direction pattern. Effect of the Invention

[0007] According to the embodiment, even when a plurality of evacuation directions are displayed, good visibility of prohibited evacuation directions can be expected. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view of a display device showing a first embodiment. [Diagram 2] FIG. [Diagram 3] FIG. 3 is a cross-sectional view showing a light source holder of the display device. [Figure 4] 1A is a front view of the display device showing the first and second prohibited patterns of the display device, FIG. 1B is a schematic plan view of the display device, and FIG. 1C is a schematic plan view of a display device of a comparative example. [Diagram 5] FIG. 2 is a front view of the display device in which the first and second prohibited patterns are not displayed. [Figure 6] FIG. 4 is a front view showing the first prohibited pattern of the display device. [Figure 7] FIG. 4 is a front view showing a second prohibited pattern of the display device. [Figure 8] 6 is a cross-sectional view of a light guide plate of a display device according to a second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The first embodiment will be described below with reference to FIGS.

[0010] A display device 10 is shown in Fig. 1. The display device 10 is an emergency light for guiding evacuees to evacuation routes. Although a ceiling-suspended type is shown in Fig. 1, the display device 10 may be any of a ceiling-mounted type, a ceiling-embedded type, a wall-mounted type, a wall-embedded type, and a floor-mounted type.

[0011] The display device 10 comprises a main body 11 which is an emergency light, a first display unit 12 which is an emergency display unit possessed by the main body 11 and provided on the front side of the main body 11, a second display unit 13 which is a prohibition display unit disposed on the front side, which is the display surface side, of the first display unit 12 of the main body 11, a mounting member 14 to which the main body 11 having the first display unit 12 and the second display unit 13 are attached, and an arm 15 which is an installation member for supporting the mounting member 14 and installing the display device 10 on a ceiling surface.

[0012] As shown in FIG. 2, the front side of the main body 11 is a display screen side, and the front side of the main body 11 is open.

[0013] The display device 10 includes a first battery 20 and a first power supply unit 21 for the first display unit 12, and the first battery 20 and the first power supply unit 21 are disposed in the main body 11. The first battery 20 is a rechargeable secondary battery. The first power supply unit 21 includes a power conversion unit that converts input power input from an external power supply such as a commercial AC power supply into a predetermined lighting power, a charging / discharging unit that charges and discharges the first battery 20, a communication unit that communicates with a higher-level device, and a control unit that controls the first display unit 12. The first power supply unit 21 converts the input power into a predetermined lighting power and supplies it to the first display unit 12 while charging the first battery 20 during normal operation when power is input from an external power supply such as a commercial AC power supply. The first power supply unit 21 also converts the power from the first battery 20 into a predetermined lighting power and supplies it to the first display unit 12 during a power outage of the external power supply.

[0014] The display device 10 also includes a second battery and a second power supply unit for the second display unit 13, in addition to the first battery 20 and the first power supply unit 21 for the first display unit 12. The second battery 22 and the second power supply unit 23 are disposed on the second display unit 13 side outside the main body 11. The second battery 22 is a rechargeable secondary battery. The second power supply unit 23 includes a power conversion unit that converts input power input from an external power supply such as a commercial AC power supply to a predetermined lighting power, a charging / discharging unit that charges and discharges the second battery 22, a communication unit that communicates with a higher-level device, and a control unit that controls the second display unit 13. The second power supply unit 23 converts the input power into a predetermined lighting power so that it can be supplied to the second display unit 13 and charges the second battery 22 during normal times when power is input from an external power supply such as a commercial AC power supply. Furthermore, the second power supply unit 23 is capable of converting the power from the second battery 22 into a predetermined lighting power and supplying it to the second display unit 13 during a power outage of the external power supply.

[0015] The first display unit 12 includes a first display section 30, which is a guidance display section that displays an evacuation direction for guiding to an evacuation route, and is attached to the front side of the main body 11. The first display unit 12 includes a guidance light guide plate (guidance light guide plate) 31 arranged on the front side of the main body 11, a guidance display plate 32 arranged on the front side of the guidance light guide plate 31, a mounting frame 33 for mounting the guidance light guide plate 31 and the guidance display plate 32, and a guidance light source (guidance light source) 34 that inputs light to the guidance light guide plate 31. A first evacuation direction pattern 35 and a second evacuation direction pattern 36 are displayed on the guidance display plate 32, and the guidance display plate 32 is configured as the first display section 30 that displays the first evacuation direction pattern 35 and the second evacuation direction pattern 36.

[0016] The guide light guide plate 31 is formed in a rectangular plate shape from a synthetic resin having optical transparency, such as an acrylic resin or a polycarbonate resin. The guide light guide plate 31 has an incident surface on the upper end surface facing the guide light source 34, where light from the guide light source 34 is incident, and an exit surface on one main surface on the front side from which the light incident from the incident surface exits. The guide light guide plate 31 may be provided with a light distribution means on the opposite surface facing the exit surface so that the light incident from the incident surface exits from the exit surface. Examples of the light distribution means include dot printing in which ink containing a light transmission control material (white pigment) is regularly printed, a prism cut shape or dot processing in which a surface facing the exit surface is provided with multiple concaves and convexes, and a rough surface processing in which the surface facing the exit surface is polished to provide fine concaves and convexes.

[0017] The guide sign 32 is formed in a rectangular sheet shape from a synthetic resin having optical transparency. As shown in FIG. 5, the first evacuation direction pattern 35 displayed on the guide sign 32 is disposed to the left of a center line c along the vertical direction at the center of the left-right direction of the guide sign 32, and is formed by an arrow pointing to the first evacuation direction, which is the left direction. The second evacuation direction pattern 36 is disposed to the right of the center line c in the left-right direction of the guide sign 32, and is formed by an arrow pointing to the second evacuation direction, which is the right direction, which is different from and opposite to the first evacuation direction pattern 35. The first evacuation direction pattern 35 and the second evacuation direction pattern 36 are provided at positions symmetrical to the left-right direction with respect to the center line c.

[0018] The display area of ​​the evacuation direction patterns 35, 36 of the guidance sign 32 is formed in a green area 37 displayed in green, and the area of ​​the guidance sign 32 other than the evacuation direction patterns 35, 36 is formed in a white area 38 displayed in white. The green area 37 of the evacuation direction patterns 35, 36 of the guidance sign 32 is formed by printing with green ink, for example, silk screen printing or inkjet printing. The white area 38 of the guidance sign 32 is formed by printing with white ink, for example, silk screen printing or inkjet printing. The display area of ​​the evacuation direction patterns 35, 36 of the guidance sign 32 may be white, and the area around the evacuation direction patterns 35, 36 may be green.

[0019] The mounting frame 33 is formed in a frame shape with an opening in the central area of ​​the front surface, holds the guide light guide plate 31 and the guide display plate 32 which are inserted from above, and is attached to the front surface side of the main body 11.

[0020] The guidance light source 34 is configured by a light emitting module having a substrate 39 and a light emitting element 40, such as an LED element, mounted on the substrate 39. The light emitting element 40 faces the incident surface of the guidance light guide plate 31 and emits, for example, white light toward the incident surface of the guidance light guide plate 31. The guidance light source 34 is constantly turned on by power from an external power source or power from the first battery 20, and constantly displays the first display unit 30. Then, the light of the guidance light source 34 is emitted from the guidance light guide plate 31 to the guidance display plate 32, so that the green evacuation direction patterns 35, 36 are displayed in green, and the area other than the evacuation direction patterns 35, 36 is displayed in white.

[0021] The first display unit 30 may be formed integrally with the guide light guide plate 32, and the guide light guide plate 32 may be provided with the evacuation direction patterns 34, 35.

[0022] The second display unit 13 also includes a second display section 50 (see FIG. 4(a)) that displays the prohibition of guidance to an evacuation route by the first display section 30, and this second display section 50 is disposed on the front side of the main body 11, in front of the first display section 30. The second display section 50 is disposed on the projection surface of the first display section 30, and is configured to allow light emitted from the first display section 30 to pass through. The second display section 50 is also disposed at a distance forward from the first display section 30.

[0023] The second display unit 13 has a first light guide plate 51 arranged at a distance on the front side of the first display section 30, a second light guide plate 52 arranged at a distance on the front side of the first light guide plate 51, a first light source 53 that inputs light to the first light guide plate 51, a second light source 54 that inputs light to the second light guide plate 52, and a mounting frame 55 to which the light guide plates 51, 52 and the light sources 53, 54 are attached.

[0024] The first light guide plate 51 and the second light guide plate 52 are formed in a rectangular plate shape from a colorless, transparent, light-transmitting synthetic resin, such as acrylic resin or polycarbonate resin. The first light guide plate 51 has an incident surface on an upper end surface facing the first light source 53, through which light from the first light source 53 is incident, and guides the light incident on the incident surface toward an end surface on the lower side. The second light guide plate 52 has an incident surface on an upper end surface facing the second light source 54, through which light from the second light source 54 is incident, and guides the light incident on the incident surface toward an end surface on the lower side.

[0025] The first light guide plate 51 displays a first prohibition pattern 57 (see FIGS. 4 and 6) which is an evacuation prohibition mark that is a pictogram such as a picture or letter indicating that evacuation is prohibited (entry is prohibited), for example, a "x" mark. The first prohibition pattern 57 of the first light guide plate 51 is provided at a position overlapping the first evacuation direction pattern 35. Similarly, the second light guide plate 52 displays a second prohibition pattern 58 (see FIGS. 4 and 7) which is an evacuation prohibition mark that is a pictogram such as a picture or letter indicating that evacuation is prohibited (entry is prohibited), for example, a "x" mark. The second prohibition pattern 58 of the second light guide plate 52 is provided at a position overlapping the second evacuation direction pattern 36. These prohibition patterns 57, 58 are formed, for example, by printing with red ink, such as silk screen printing or inkjet printing, or by embossing.

[0026] When first light source 53 is turned on, light incident on first light guide plate 51 is diffusely reflected by first prohibition pattern 57 and emitted forward, thereby displaying first prohibition pattern 57. When second light source 54 is turned on, light incident on second light guide plate 52 is diffusely reflected by second prohibition pattern 58 and emitted forward, thereby displaying second prohibition pattern 58.

[0027] The prohibited patterns 57, 58 of the second display section 50 are different in color and shape from the evacuation direction patterns 35, 36 of the first display section 30. The areas of the prohibited patterns 57, 58 of the second display section 50 have a predetermined transmittance, and the areas other than the prohibited patterns 57, 58 have a higher transmittance than the areas of the prohibited patterns 57, 58. Therefore, the light emitted from the front side of the first display section 30 is attenuated at a predetermined transmittance in the areas of the prohibited patterns 57, 58, and is transmitted almost as it is in the other areas when the light guide plates 51, 52 are colorless and transparent. Therefore, at least the front side of the evacuation direction patterns 35, 36 of the first display section 30 of the second display section 50 has translucency. In other words, at least the areas of the second display section 50 that overlap with the evacuation direction patterns 35, 36 of the first display section 30 have translucency.

[0028] As shown in the schematic plan view of the display device 10 in FIG. 4(b), the first light guide plate 51 and the second light guide plate 52 are the same type of light guide plate with a pattern of "x" marks (prohibited patterns 57, 58) formed on one surface, and are arranged with the surface with the "x" mark pattern facing the opposite direction. The first prohibited pattern 57 is provided at a position overlapping the first evacuation direction pattern 35 on the front side of the first light guide plate 51, which is the surface opposite to the surface facing the first display unit 30, and the second prohibited pattern 58 is provided at a position overlapping the second evacuation direction pattern 36 on the back side or rear side of the second light guide plate 52, which is the surface facing the first light guide plate 51. Therefore, the first prohibited pattern 57 and the second prohibited pattern 58 are provided on the surfaces facing each other of the first light guide plate 51 and the second light guide plate 52, respectively. The surfaces facing each other of the first light guide plate 51 and the second light guide plate 52 are separated from each other without contacting each other.

[0029] The first light source 53 and the second light source 54 are configured by a light emitting module having a common substrate 60 and a first light emitting element 61 of the first light source 53 such as an LED element and a second light emitting element 62 of the second light source 54 mounted on the substrate 60, and emit, for example, red light. The first light emitting element 61 faces the incident surface of the first light guide plate 51 and causes light to enter the first light guide plate 51 from the incident surface. The second light emitting element 62 faces the incident surface of the second light guide plate 52 and causes light to enter the second light guide plate 52 from the incident surface. The first light source 53 and the second light source 54 are turned on by supplying power from an external power source or power from the second battery 22 under the control of the control unit of the second power supply unit 23.

[0030] 2, the mounting frame 55 is formed in a frame shape having an opening 64 on the front side through which the second display unit 50 faces. The light guide plates 51 and 52 are held within the mounting frame 55, and a light source holder 65 for holding the light sources 53 and 54 is attached to the upper side of the mounting frame 55.

[0031] 2 and 3, the light source holder 65 is formed of an opaque material that does not transmit light, such as black. The light source holder 65 is provided with a substrate accommodating section 66 in which the substrate 60 is disposed, and a first groove section 67 and a second groove section 68 in which the first light emitting element 61 of the first light source 53 and the second light emitting element 62 of the second light source 54 are disposed below the substrate accommodating section 66, and in which the upper sides of the first light guide plate 51 and the second light guide plate 52 are disposed, are provided.

[0032] The light source holder 65 has a rear wall portion 69, a front wall portion 70, and an intermediate wall portion 71 between the rear wall portion 69 and the front wall portion 70, and the left and right ends of the rear wall portion 69, the front wall portion 70, and the intermediate wall portion 71 are connected and provided integrally. A first groove portion 67 is provided between the rear wall portion 69 and the intermediate wall portion 71, and holds the upper side of the first light guide plate 51. A second groove portion 68 is provided between the intermediate wall portion 71 and the front wall portion 70, and holds the upper side of the second light guide plate 52. The rear wall portion 69, the front wall portion 70, and the intermediate wall portion 71 have downward protruding dimensions increasing in the order of the front wall portion 70, the intermediate wall portion 71, and the rear wall portion 69.

[0033] The intermediate wall portion 71 is configured as a protruding portion 72 that protrudes between the first light-emitting element 61 of the first light source 53 and the second light-emitting element 62 of the second light source 54, and is inserted between the first light guide plate 51 and the second light guide plate 52.

[0034] Also, as shown in FIGS. 4(a) and 4(b), reflection suppression portions 74 are provided at the lower surfaces and the end portions of the left and right surfaces excluding the incident surfaces on the upper surfaces of the first light guide plate 51 and the second light guide plate 52. The reflection suppression portions 74 are configured by covering the end portions of the light guide plates 51 and 52 with a black cover or painting the end portions of the light guide plates 51 and 52 black. The reflection suppression portions 74 suppress the red light incident on the light guide plates 51 and 52 from being reflected by the side surfaces and the lower surfaces of the light guide plates 51 and 52 and glowing red when the light sources 53 and 54 are lit.

[0035] Also, the attachment member 14 attaches the main body 11 by a bracket 76 (see FIG. 2), and attaches the attachment frame 55 of the second display unit 13 by screws 77 (see FIG. 1) inserted from both side surfaces. A second battery 22 and a second power supply unit 23 for the second display unit 13 are arranged between the inner sides of the attachment member 14 and the attachment frame 55.

[0036] Note that the display device 10 is of a single-sided display type with only one side on the front side as the display surface side, but may also be of a double-sided display type with both sides on the side opposite to the front side as the display surface sides.

[0037] And the display device 10 is connected to a host such as an automatic fire alarm so as to be mutually communicable.

[0038] As shown in FIG. 5, the display device 10 keeps the first display unit 30 in a constantly displayed state and displays the first evacuation direction pattern 35 and the second evacuation direction pattern 36. The second display unit 50 does not display when an evacuation prohibition signal is not input from an automatic fire alarm or the like.

[0039] In addition, if a fire detector detects a fire on the evacuation route in the first evacuation direction displayed by the first evacuation direction pattern 35 of the display device 10 and the automatic fire alarm acquires detection information from the fire detector, the automatic fire alarm transmits an evacuation prohibition signal in the first evacuation direction to the second power supply unit 23 of the display device 10.

[0040] When the control unit of the second power supply unit 23 of the display device 10 receives an evacuation prohibition signal in the first evacuation direction from the automatic fire alarm, it turns on the first light source 53 and displays the first prohibition pattern 57, as shown in Fig. 6. That is, the first prohibition pattern 57 of "x" marks is displayed superimposed on the first evacuation direction pattern 35. This allows an evacuee who sees the display device 10 to recognize that evacuation to the evacuation route in the first evacuation direction is prohibited by checking the first prohibition pattern 57 of "x" marks displayed superimposed on the first evacuation direction pattern 35, and thus allows the evacuee to evacuate in the second evacuation direction displayed in the second evacuation direction pattern 36.

[0041] Furthermore, when the control unit of the second power supply unit 23 of the display device 10 receives an evacuation prohibition signal in the second evacuation direction from the automatic fire alarm, it turns on the second light source 54 to display the second prohibition pattern 58, as shown in Fig. 7. That is, the second prohibition pattern 58 with an "x" mark is displayed superimposed on the second evacuation direction pattern 36. This allows evacuees to recognize that evacuation to the evacuation route in the second evacuation direction is prohibited by checking the second prohibition pattern 58 with an "x" mark displayed superimposed on the second evacuation direction pattern 36, and allows them to evacuate in the first evacuation direction displayed in the first evacuation direction pattern 35.

[0042] In addition, when the control unit of the second power supply unit 23 of the display device 10 receives an evacuation prohibition signal in the first evacuation direction and the second evacuation direction from the automatic fire alarm (either receiving one of the evacuation prohibition signal in the first evacuation direction and the evacuation prohibition signal in the second evacuation direction before receiving the other, or receiving them simultaneously), it turns on the light sources 53, 54 to display the prohibition patterns 57, 58 as shown in FIG. 4. That is, it displays each of the prohibition patterns 57, 58 with an "x" mark superimposed on each of the evacuation direction patterns 35, 36. This allows evacuees to recognize the prohibition of evacuation to the evacuation routes in the first evacuation direction and the second evacuation direction by checking the prohibition patterns 57, 58 with an "x" mark superimposed on the evacuation direction patterns 35, 36, and enables them to head to another evacuation route.

[0043] 4(c), when the second prohibited pattern 58 is provided on the front side of the second light guide plate 52 opposite to the surface facing the first light guide plate 51, the distance between the second prohibited pattern 58 and the first prohibited pattern 57 and the first prohibited pattern 57 of the first light guide plate 51 in the front-rear direction is long. Therefore, when the display device 10 is viewed from an oblique direction with respect to the front side, it is easy to visually recognize that the first prohibited pattern 57 and the second prohibited pattern 58 are shifted in the front-rear direction. Furthermore, when the second prohibited pattern 58 is viewed from an oblique left direction with respect to the front side of the display device 10 and when the second prohibited pattern 58 is viewed from an oblique right direction, the degree of overlap of the second prohibited pattern 58 with respect to the second evacuation direction pattern 36 may be shifted significantly, resulting in a difference in appearance.

[0044] 4(b), when the second prohibited pattern 58 is provided on the rear surface of the second light guide plate 52, which faces the first light guide plate 51, the distance between the second prohibited pattern 58 and the first prohibited pattern 57 of the first light guide plate 51 in the front-rear direction is shortened. Therefore, even when viewed obliquely from the front side of the display device 10, the misalignment between the first prohibited pattern 57 and the second prohibited pattern 58 in the front-rear direction is difficult to visually recognize. Furthermore, the misalignment of the second prohibited pattern 58 with respect to the second evacuation direction pattern 36 is reduced between the case where the second prohibited pattern 58 is viewed obliquely from the left and the case where the second prohibited pattern 58 is viewed obliquely from the right with respect to the front side of the display device 10, thereby suppressing the difference in appearance.

[0045] In this way, even when a plurality of evacuation directions are displayed, it is possible to provide a display device 10 that provides good visibility of prohibited evacuation directions.

[0046] Furthermore, the first light guide plate 51 and the second light guide plate 52 can be constructed by arranging the same type of light guide plate in different orientations, which allows the use of common components and reduces the number of types of components used in the display device 10.

[0047] By providing reflection suppression sections 74 at the ends of first light guide plate 51 and second light guide plate 52, when light sources 53, 54 are turned on, red light entering light guide plates 51, 52 is reflected by the side and bottom surfaces of light guide plates 51, 52, which suppresses the red glow of areas other than the "X" marks, thereby improving the visibility of the "X" marks in prohibition patterns 57, 58.

[0048] In addition, if the opposing surfaces of the first light guide plate 51 and the second light guide plate 52 are in contact, when one of the light sources 53, 54 is turned on and light is incident on one of the light guide plates 51, 52, there is a risk that the light from one of the light sources 53, 54 will interfere with the other of the light guide plates 51, 52. However, because the opposing surfaces of the first light guide plate 51 and the second light guide plate 52 are spaced apart, when one of the light sources 53, 54 is turned on and light is incident on one of the light guide plates 51, 52, it is possible to prevent the light from one of the light sources 53, 54 from interfering with the other of the light guide plates 51, 52.

[0049] Furthermore, since the protrusion 72 of the light source holder 65 protrudes between the first light source 53 and the second light source 54 and is inserted between the first light guide plate 51 and the second light guide plate 52, the protrusion 72 functions as a light-shielding portion between the first light source 53 and the second light source 54, and even when one of the light sources 53, 54 is turned on, light from one of the light sources 53, 54 can be prevented from entering the other of the light guide plates 51, 52.

[0050] 8, the first light guide plate 51 and the second light guide plate 52 may be in contact with each other at their opposing surfaces. In this case, a notch 80 is provided on the opposing surfaces of the upper ends of the first light guide plate 51 and the second light guide plate 52 so that the surfaces are separated from each other, and the notch 80 is painted black to prevent light from passing through. The protrusion 72 of the light source holder 65 is inserted into the notch 80. With this configuration, even if the opposing surfaces of the first light guide plate 51 and the second light guide plate 52 are in contact with each other, it is possible to prevent light from one of the light sources 53, 54 from entering the other of the light guide plates 51, 52.

[0051] The display device is not limited to an emergency exit light, but may also be used as a display device that indicates whether entry is permitted or prohibited for people or vehicles at a gate or the like.

[0052] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0053] 10 Display device 30 1st display section 35 First evacuation direction pattern 36 Second evacuation direction pattern 51 1st light guide plate 52 Second light guide plate 53 1st light source 54 Second light source 57 First Prohibited Pattern 58 Second Prohibited Pattern 72 Protrusion 74 Reflection suppressor

Claims

1. a first display unit on which a first evacuation direction pattern and a second evacuation direction pattern different from the first evacuation direction pattern are displayed; a first light guide plate disposed on a front side of the first display unit, the first light guide plate having a first prohibition pattern provided at a position overlapping with the first evacuation direction pattern on a surface opposite to a surface facing the first display unit; a second light guide plate disposed on a front side of the first light guide plate, the second light guide plate having a second prohibition pattern provided on a surface facing the first light guide plate at a position overlapping with the second evacuation direction pattern; A display device comprising:

2. The first light guide plate and the second light guide plate are provided at their ends with anti-reflection portions.

2. The display device according to claim 1 .

3. The first light guide plate and the second light guide plate have opposing surfaces spaced apart from each other.

2. The display device according to claim 1 .

4. a light source holder in which a first light source corresponding to the first light guide plate and a second light source corresponding to the second light guide plate are disposed; The light source holder has a protruding portion that protrudes between the first light source and the second light source and at least a portion of which is inserted between the first light guide plate and the second light guide plate.

4. The display device according to claim 3.

Images