Indication device

Abstract

To restrain movement of a display block caused by external force.SOLUTION: A display device B1 comprises a display block 2 including a display panel 20, a main body 1, and a restraint part 6. The main body 1 has a pair of side walls 101 with wall surfaces 102 opposed to each other, and a pair of holding parts 7. The pair of holding parts 7 are disposed on the respective wall surfaces 102 of the pair of side wall 101. The pair of holding parts 7 hold the display block 2 in a manner of sliding the display block 2 in one direction along the wall surface 102 to regulate movement of the display block 2 along a thickness direction and further movement in the one direction. The restraint part 6 restrains movement of the display block 2 in at least one of an arrangement direction in which the pair of side walls 101 are arranged, and a rotation direction D1 about an axis C1 along the thickness direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates generally to display devices, and more particularly to display devices that include a display panel illuminated by light emitted from a light source. [Background technology]

[0002] Patent Document 1 discloses a lighting device that can be attached to a ceiling or wall surface, such as an emergency exit light. This lighting device comprises a main body, a display unit, and a lamp holder unit. The display unit frame of the display unit has four first engagement portions on the back surface opposite the front surface on which the display panel is located. The main body frame of the main body has four second engagement portions. The first engagement portions are located in positions corresponding to the second engagement portions of the main body frame, and by engaging with the second engagement portions, the display unit is attached and fixed to the main body. This lighting device has the advantage of making it easy to attach the display unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-58504 Summary of the Invention [Problem to be solved by the invention]

[0004] However, external forces may be applied to the display unit (display block) in various directions due to shaking such as earthquakes. Therefore, it may be desirable to further suppress the movement of the display block due to external forces so that the display block does not fall off the main body.

[0005] The present disclosure has been made in view of the above circumstances, and aims to provide a display device that suppresses movement of display blocks due to external forces. [Means for solving the problem]

[0006] A display device according to one aspect of the present disclosure includes a display block including a display panel, a main body, and a suppression unit. The display panel is illuminated by light emitted from a light source. The main body has a pair of side walls whose wall surfaces face each other, and a pair of holding units. The pair of holding units are respectively disposed on the wall surfaces of the pair of side walls and slide the display block in one direction along the wall surfaces, thereby holding the display block in a manner that restricts movement of the display block along a thickness direction and further movement in the one direction. The suppression unit suppresses movement of the display block held by the pair of holding units along at least one of the direction in which the pair of side walls are aligned and the direction of rotation about an axis along the thickness direction. The suppressing portion is disposed between the pair of holding portions and one end of both end portions of the main body in the one direction. A display device according to another aspect of the present disclosure includes a display block including a display panel, a main body, and a suppression unit. The display panel is illuminated by light emitted from a light source. The main body has a pair of side walls whose wall surfaces face each other, and a pair of holding units. The pair of holding units are respectively disposed on the wall surfaces of the pair of side walls and slide the display block in one direction along the wall surfaces, thereby holding the display block in a manner that restricts movement of the display block along the thickness direction and further movement in the one direction. The suppression unit suppresses movement of the display block held by the pair of holding units along at least one of the direction in which the pair of side walls are aligned and the direction of rotation about an axis along the thickness direction. The suppression unit has a first portion disposed on the wall surface of at least one of the pair of side walls and a second portion disposed on the display block and capable of engaging with the first portion. A display device according to yet another aspect of the present disclosure includes a display block including a display panel, a main body, and a suppression unit. The display panel is illuminated by light emitted from a light source. The main body has a pair of side walls whose wall surfaces face each other, and a pair of holding units. The pair of holding units are respectively disposed on the wall surfaces of the pair of side walls and slide the display block in one direction along the wall surfaces, thereby holding the display block in a manner that restricts movement of the display block along the thickness direction and further movement in the one direction. The suppression unit suppresses movement of the display block held by the pair of holding units along at least one of the direction in which the pair of side walls are aligned and the direction of rotation about an axis along the thickness direction. The display device includes at least a first suppression unit and a second suppression unit as the suppression unit. The pair of holding units are located between the first suppression unit and the second suppression unit in the one direction. [Effects of the Invention]

[0007] According to the present disclosure, there is an advantage that movement of the display block due to an external force can be suppressed. [Brief explanation of the drawings]

[0008] [Figure 1] Fig. 1A is a perspective view of a display device according to one embodiment, Fig. 1B is a cross-sectional view of a main part in a region B shown in Fig. 1A, and Fig. 1C is a cross-sectional view of a main part in a region C shown in Fig. 1A. [Figure 2] FIG. 2 is an exploded perspective view of the display device. [Figure 3] FIG. 3 is an exploded perspective view of a display block in the display device. [Figure 4] FIG. 4 is a perspective view of a main body and a display block in the display device. [Figure 5] FIG. 5 is a perspective view of the display block as viewed from behind. [Figure 6] FIG. 6 is a perspective view of the main part of the main body of the same. [Figure 7] FIG. 7 is a perspective view of the main part of the main body of the same. [Figure 8] 8A to 8C are cross-sectional views of the main part of the display device. DETAILED DESCRIPTION OF THE INVENTION

[0009] Display devices according to embodiments of the present disclosure will be described in detail with reference to the drawings. However, the drawings described in the following embodiments are schematic diagrams, and the ratios of the sizes and thicknesses of the components do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0010] (1) Overview of the embodiment A display device B1 according to the embodiment (hereinafter simply referred to as display device B1) includes a display block 2 including a display panel 20, a main body 1, and a suppression unit 6, as shown in FIGS. 1A to 1C, 2, and 4.

[0011] The display panel 20 is illuminated by light emitted from a light source. In this embodiment, the light source is assumed to be, for example, an LED (Light Emitting Diode) 300 (see FIGS. 1A and 2) as a solid-state light source.

[0012] 2 and 4, the main body 1 has a pair of side walls 101 whose wall surfaces 102 (inner wall surfaces) face each other, and a pair of holding portions 7. In this embodiment, as an example, the main body 1 has two pairs of holding portions 7, that is, a pair of holding portions 7A and a pair of holding portions 7B.

[0013] The pair of holding parts 7 are respectively disposed on the wall surfaces 102 of the pair of side walls 101. The pair of holding parts 7 hold the display block 2 in a manner that restricts movement of the display block 2 along the thickness direction and further movement in the one direction by sliding the display block 2 in one direction (downward in FIG. 4 ) along the wall surfaces 102. Hereinafter, when attaching the display block 2 to the main body 1 during construction to install the display device B1 in a facility (a building such as an office or store), sliding the display block 2 downward along the wall surfaces 102 of the main body 1 may be referred to as the "sliding process."

[0014] The suppressing portion 6 suppresses movement of the display block 2 held by the pair of holding portions 7 along at least one of the following: the alignment direction (left-right direction) in which the pair of side walls 101 are aligned; and the rotation direction D1 (see FIG. 1A) around an axis C1 (see FIG. 1A) along the thickness direction. As an example, in this embodiment, the suppressing portion 6 includes four engaging portions (a pair of upper left-right first suppressing portions 6A and a pair of lower left-right second suppressing portions 6B) as shown in FIGS. 1A to 1C. The display device B1 has a structure in which the four engaging portions can be formed by a sliding process.

[0015] The display device B1 is provided with the suppression unit 6, which suppresses movement of the display blocks 2 along at least one of the arrangement direction (left-right direction) and the rotation direction D1. Therefore, when the display device B1 is subjected to an external force caused by shaking such as an earthquake, the movement of the display blocks 2 due to the external force can be suppressed. As a result, the display device B1 not only prevents the display blocks 2 from falling off the main body 1, but also increases the likelihood of preventing the display blocks 2 from shifting and twisting relative to the main body 1.

[0016] (2) Details of the embodiment (2-1) Configuration of the Display Device According to the Embodiment The display device B1 will be described with reference to the drawings. The display device B1 described below is an emergency exit light installed at an emergency exit or a passageway to an emergency exit in a facility (such as an office or store building). However, the display device according to the embodiment is not limited to emergency exit lights, and may be used, for example, to indicate a specific location (such as a restroom) within a facility. In the following description, unless otherwise specified, the up / down, front / back, and left / right directions indicated by arrows in FIG. 1A and other figures are defined as the up / down, front / back, and left / right directions of the display device B1.

[0017] The display device B1 includes a light source unit A1, a main body 1, a display block 2, a suppression section 6, and the like (see FIGS. 1A to 1C, 2, and 4).

[0018] The main body 1 is made of synthetic resin and is formed in the shape of a rectangular box with an opening on the front (see FIG. 2). As shown in FIG. 2, the main body 1 has a pair of left and right side walls 101. Each side wall 101 is formed in the shape of a rectangular plate. Each of the pair of side walls 101 has a wall surface 102 (inner wall surface). The wall surfaces 102 of the pair of side walls 101 face each other. In other words, the pair of side walls 101 are arranged side by side with their thickness directions facing the left-right direction.

[0019] 2 and 4, the main body 1 has two pairs of holding portions 7, specifically, a pair of left and right holding portions 7A and a pair of left and right holding portions 7B. In other words, the main body 1 has four holding portions 7. The number of holding portions 7 in the present disclosure is not particularly limited. The pair of holding portions 7A are each disposed above the center of the main body 1 in the vertical direction and near the front edges of the wall surfaces 102 of the pair of side walls 101. The pair of holding portions 7B are each disposed below the center of the main body 1 in the vertical direction and near the front edges of the wall surfaces 102 of the pair of side walls 101.

[0020] In this embodiment, the main body 1 has a configuration in which the left-side holding portions 7A and 7B and the right-side holding portions 7A and 7B are symmetrical in the left-right direction. The left-side holding portions 7A and 7B are formed integrally with the left side wall 101 so as to protrude rightward from the wall surface 102 of the left side wall 101 in a plate-like shape. The right-side holding portions 7A and 7B are formed integrally with the right side wall 101 so as to protrude leftward from the wall surface 102 of the right side wall 101 in a plate-like shape. The four holding portions 7 are generally L-shaped when viewed from the right, and are configured to slide and engage with four slide pieces (Y1, Y2) of the display block 2 (described later) in a one-to-one relationship. The pair of holding portions 7A and the pair of holding portions 7B thus configured hold the display block 2 in a manner that restricts movement of the display block 2 along the thickness direction and further downward movement by sliding the display block 2 downward along the wall surface 102.

[0021] 4, parts of the suppression unit 6 (four first portions 61) are disposed near the front edges of the pair of wall surfaces 102 of the main body 1. Details of the four first portions 61 of the suppression unit 6 will be described later.

[0022] As shown in FIGS. 2 and 4, the main body 1 houses a power supply device 11 for lighting the light source unit A1, a battery unit 13 having a secondary battery, a terminal block 12, a connector 14, a mounting plate 10, and the like.

[0023] The power supply device 11 lights up the light source unit A1 with normal power supplied from a normal power source (for example, a commercial power system) and charges the battery unit 13. Furthermore, the power supply device 11 lights up the light source unit A1 with emergency power supplied from the battery unit 13 in the event of a power outage in the power system.

[0024] The mounting plate 10 is formed into a plate shape from a metal material (see Figures 2 and 4). The mounting plate 10 is screwed to the inner bottom surface of the main body 1. The power supply unit 11 and terminal block 12 are screwed to the mounting plate 10 and housed within the main body 1. The battery unit 13 is detachably attached to the mounting plate 10.

[0025] The display block 2 has a display panel 20, a light guide plate 21, and a holder 22 (see FIG. 3).

[0026] The display panel 20 is illuminated by light emitted from a light source (LED 300). The display panel 20 is formed in the shape of a rectangular flat plate from a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin. However, the display panel 20 may be formed from a light-transmitting material other than synthetic resin, such as quartz glass. A pictogram 201 for evacuation guidance is displayed on the front surface (display surface 200) of the display panel 20 (see FIG. 1A).

[0027] The light guide plate 21 is formed in the shape of a rectangular flat plate from a translucent synthetic resin material such as acrylic resin or polycarbonate resin. The light guide plate 21 is disposed behind the display panel 20 so that its front surface faces the rear surface of the display panel 20 (see FIG. 3). Light emitted from the light source unit A1 is incident on the upper surface (incident surface 210) of the light guide plate 21 (see FIG. 2). The light incident on the incident surface 210 is guided inside the light guide plate 21 and emitted from the front surface (exit surface 211: see FIG. 3) of the light guide plate 21. The display panel 20 is illuminated by the light emitted from the exit surface 211 of the light guide plate 21.

[0028] The holder 22 is made of a non-transparent synthetic resin material and has a rectangular box shape with an open front and top. The holder 22 holds the display panel 20 and the light guide plate 21 such that the display panel 20 is positioned in front of the light guide plate 21 (see FIGS. 2 and 3).

[0029] 5, the holder 22 has four slide pieces (Y1, Y2) on its rear surface 220. Specifically, a pair of upper left and right slide pieces Y1 and a pair of lower left and right slide pieces Y2 are provided near both left and right edges of the rear surface 220 so as to correspond one-to-one to the pair of upper left and right holder parts 7A and the pair of lower left and right holder parts 7B of the main body 1, respectively.

[0030] The holder 22 in this embodiment has a configuration in which the left slide pieces Y1, Y2 and the right slide pieces Y1, Y2 are plane-symmetrical in the left-right direction. The pair of upper slide pieces Y1 protrude rearward from the back surface 220 in a plate-like shape and are further formed to extend in a plate-like shape in a direction away from each other (outward). Similarly, the pair of lower slide pieces Y2 protrude rearward from the back surface 220 in a plate-like shape and are further formed to extend in a plate-like shape in a direction away from each other (outward). In other words, each slide piece (Y1, Y2) has a hook-like shape into which the corresponding holder 7 can be slidably inserted from below.

[0031] 5, a part of the suppression section 6 (four second portions 62) is disposed on the rear surface 220 of the holder 22. The four second portions 62 of the suppression section 6 will be described in detail later.

[0032] The display block 2 is attached to the main body 1 so as to cover the remaining portion of the opening of the main body 1 except for the upper portion where the light source unit A1 is attached (see FIG. 1A). When the light source unit A1 is attached to the main body 1, the incident surface 210 of the light guide plate 21 and the exit surface (lower surface) of the light guide 5 (see FIG. 2) of the light source unit A1 face each other in the vertical direction. Therefore, almost all of the light emitted from the exit surface of the light guide 5 enters the light guide plate 21 from the incident surface 210 of the light guide plate 21. The light that enters the light guide plate 21 travels inside the light guide plate 21 and is totally reflected by the rear surface of the holder 22, and is emitted forward from the exit surface 211 of the light guide plate 21 to illuminate the display panel 20.

[0033] The light source unit A1 has a light emitting portion, a light guide 5, and a housing 4 (see FIG. 2).

[0034] The light-emitting unit has an LED 300 (light source) that is a solid-state light source, and a substrate on which the LED 300 is mounted. The LED 300 is, for example, a packaged white LED for lighting. The substrate is a printed wiring board that is formed in an approximately T-shape when viewed from the left and right. The LED 300 is mounted on the surface of a wide portion of the substrate. A pair of electrodes is formed on the surface of a narrow portion of the substrate. The pair of electrodes is electrically connected to the anode and cathode of the LED 300, respectively, via printed wiring on the substrate. The narrow portion of the substrate is inserted into a connector 14 inside the main body 1, thereby electrically connecting the light-emitting unit to the power supply device 11. It is preferable that the light source unit A1 further has a heat dissipation member or the like that is thermally coupled to the substrate and dissipates heat from the LED 300, etc.

[0035] The light guide 5 is formed in a square prism shape from a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin (see FIG. 2). However, the shape of the light guide 5 is not limited to a square prism, and may be a square pyramid or a truncated pyramid.

[0036] Of the two bottom surfaces (left and right bottom surfaces) facing each other in the longitudinal direction (axial direction) of the light guide 5, one bottom surface (right bottom surface) serves as the incident surface. Furthermore, of the four side surfaces (front, rear, top, and bottom surfaces) of the light guide 5, one side surface (bottom surface) serves as the exit surface. Furthermore, the side surface (top surface) of the light guide 5 facing the exit surface has a large number of recessed grooves.

[0037] The housing 4 is formed in a box shape that is long in the left-right direction and has an open rear and bottom. The housing 4 has a pair of attachment pieces 46 and a pair of support pieces 47, as shown in FIG.

[0038] The pair of support pieces 47 protrude rearward, one from each of the left and right ends of the top wall of the housing 4. In addition, the pair of mounting pieces 46 protrude rearward, one from each of the left and right ends of the top wall of the housing 4.

[0039] The housing 4 houses the light emitting unit at the right end and the light guide 5 on the left of the light emitting unit. Specifically, the housing 4 houses the light guide 5 with the incident surface of the light guide 5 facing the LED 300 of the light emitting unit and the exit surface of the light guide 5 exposed from the bottom.

[0040] In short, the light source unit A1 has a light source (LED 300) and a light guide 5 that guides light emitted from the light source to the display panel 20, and is held by the main body 1.

[0041] (2-2) Overall configuration of the suppression unit The suppression unit 6 cooperates with the four holding units 7 to suppress movement (such as misalignment or twisting) of the display block 2 relative to the main body 1. In particular, the suppression unit 6 suppresses movement of the display block 2 held by the four holding units 7 of the main body 1 along at least one of the left-right direction and the rotational direction D1 about the axis C1 (see FIG. 1A). The axis C1 is, for example, an imaginary axis with no physical body that passes through the center of gravity of the display block 2. In this embodiment, the suppression unit 6 is configured to be able to suppress movement of the display block 2 along both the left-right direction and the rotational direction D1. The specific structure of the suppression unit 6 will be described below.

[0042] As shown in FIG. 4, the suppression section 6 has a first section 61 and a second section 62.

[0043] The first portion 61 may be disposed on at least one wall surface 102 of the pair of side walls 101, but here, as an example, it is disposed on each of the wall surfaces 102 of the pair of side walls 101. In other words, the suppression unit 6 has a pair of first portions 61 disposed on the wall surfaces 102 of the pair of side walls 101, respectively.

[0044] In this embodiment, the pair of first portions 61 are formed as a continuous unit with the main body 1. The main body 1 and the first portions 61 are molded resin parts that are integrally molded with each other.

[0045] The second portions 62 are portions that are arranged on the display block 2 and can engage with the first portions 61. The second portions 62 are provided on the back surface of the display block 2 so as to correspond to the first portions 61 on the main body 1 side. Here, as an example, a pair of second portions 62 is provided to match the number of first portions 61. In other words, the suppression unit 6 has a pair of second portions 62 that are arranged on the display block 2 and can respectively engage with the pair of first portions 61.

[0046] 1A, the display device B1 of this embodiment includes a first suppression unit 6A and a second suppression unit 6B as the suppression unit 6. That is, the first suppression unit 6A has a pair of first portions 61 and a pair of second portions 62, and the second suppression unit 6B also has a pair of first portions 61 and a pair of second portions 62. The pair of holding units 7 is located between the first suppression unit 6A and the second suppression unit 6B in one direction (for example, the downward direction). As described above, in this embodiment, two pairs of holding units 7 are provided, and two pairs of holding units 7A, 7B are located between the first suppression unit 6A and the second suppression unit 6B in the up-down direction. That is, when viewing the display device B1 from the front, the first suppression unit 6A, the pair of holding units 7A, the pair of holding units 7B, and the second suppression unit 6B are arranged in this order from the top.

[0047] When viewing the display device B1 from the front, the first suppression unit 6A is disposed between the pair of holding units 7A and an upper end E1 (see FIG. 4) in one direction (downward) of the main body 1 in the vertical direction, i.e., on the outer side of the pair of holding units 7A. When viewing the display device B1 from the front, the second suppression unit 6B is disposed between the pair of holding units 7B and a lower end E2 (see FIG. 4) in one direction (downward) of the main body 1 in the vertical direction, i.e., on the outer side of the pair of holding units 7B. In other words, the suppression unit 6 is disposed between the pair of holding units 7 and one end of both ends (E1, E2) in one direction (downward) of the main body 1.

[0048] (2-3) Configuration of the first suppression unit When the main body 1 is attached to a structure (ceiling surface, wall surface, etc.) in a facility, the first suppression part 6A is located above the pair of holding parts 7 (on the side of the upper end part E1).

[0049] The pair of first portions 61 of the first suppression unit 6A includes a pair of claw portions 610 (see FIGS. 4, 6, and 8A). Note that FIGS. 6 and 8A only show the right claw portion 610 of the pair of left and right claw portions 610.

[0050] Fig. 8A is a cross-sectional view of a main part showing how the first portion 61 and the second portion 62 on the right side of the first suppression unit 6A fit together when the attachment of the display block 2 to the main body 1 is complete (see Fig. 1A). Fig. 8A is a cross-sectional view of the main part including the first portion 61 and the second portion 62 on the right side of the first suppression unit 6A, viewed from below. Fig. 8A is a cross-sectional view of the area B (the area indicated by the circular dashed line) in Fig. 1A, similar to Fig. 1B.

[0051] The pair of claw portions 610 are configured to be plane symmetrical in the left-right direction. The pair of claw portions 610 are provided on the wall surfaces 102 of the pair of side walls 101, respectively. The pair of claw portions 610 are resin portions formed integrally and continuously with the pair of side walls 101, respectively. Specifically, each claw portion 610 protrudes in a hook shape from the wall surface 102 of the corresponding side wall 101. The tip of each hook-shaped claw portion 610 protrudes forward as shown in FIG. 6 .

[0052] In short, the first portion 61 of the first suppression portion 6A includes a claw portion 610 protruding in a hook-like shape from at least one wall surface 102 of the pair of side walls 101 (in this embodiment, one from each wall surface 102 of the pair of side walls 101).

[0053] Meanwhile, the pair of second portions 62 of the first suppression unit 6A includes a pair of grooves 620 (see FIGS. 4, 5, and 8A). Note that FIG. 8A illustrates only the right groove 620 of the pair of left and right grooves 620. The pair of grooves 620 are configured to be symmetrical in the left-right direction. The pair of grooves 620 are provided at positions corresponding to a pair of claws 610 on the main body 1 side of the display block 2. Specifically, as shown in FIG. 5, the holder 22 of the display block 2 has a thick frame portion 221 in which both left and right edges of the back surface 220 protrude rearward from the center portion. The pair of grooves 620 are respectively located near the upper edges of the back surfaces of the left and right frame portions 221. As shown in FIG. 5, each groove 620 is recessed forward like an elongated slit. When viewed from above, each groove 620 extends to the upper surface of the corresponding frame portion 221 so as to be exposed from the upper surface.

[0054] In short, the second portion 62 of the first suppression portion 6A includes a groove portion 620 disposed in the display block 2.

[0055] (2-4) Configuration of the second suppression unit When the main body 1 is attached to a structure (ceiling surface, wall surface, etc.) in a facility, the second suppression part 6B is located below the pair of holding parts 7 (on the side of the lower end part E2).

[0056] The pair of first portions 61 of the second suppression unit 6B includes a pair of recesses 611 (see FIGS. 4, 7, and 8C). Note that FIGS. 7 and 8C only show the right recess 611 of the pair of left and right recesses 611.

[0057] Fig. 8C is a cross-sectional view of a main part showing how the first part 61 and the second part 62 on the right side of the second suppression part 6B fit together when the attachment of the display block 2 to the main body 1 is complete (see Fig. 1A). Fig. 8C is a cross-sectional view of a main part including the first part 61 and the second part 62 on the right side of the second suppression part 6B, viewed from below. Fig. 8C is a cross-sectional view of the area C (the area indicated by the circular dashed line) in Fig. 1A, similar to Fig. 1C.

[0058] The pair of recesses 611 are configured to be plane symmetrical in the left-right direction. The pair of recesses 611 are provided on the wall surfaces 102 of the pair of side walls 101, respectively. Specifically, each recess 611 is configured by the wall surface 102 of the corresponding side wall 101 and a resin protrusion X1 formed integrally and continuously with the wall surface 102. Each protrusion X1 protrudes in a hook shape from the corresponding wall surface 102. As shown in FIG. 7, the tip of each hook-shaped protrusion X1 protrudes forward. In this way, the recess 611 is configured by at least one wall surface 102 of the pair of side walls 101 (in this embodiment, one protrusion is provided on each wall surface 102 of the pair of side walls 101) and the protrusion X1 protruding in a hook shape from the wall surface 102.

[0059] In short, the first portion 61 of the second suppression portion 6B includes a recess 611 arranged on at least one wall surface 102 of the pair of side walls 101 (in this embodiment, one recess 611 on each wall surface 102 of the pair of side walls 101).

[0060] On the other hand, the pair of second portions 62 of the second suppression unit 6B includes a pair of protrusions 621 (see FIGS. 4, 5, and 8C). Note that FIG. 8C shows only the right protrusion 621 of the pair of left and right protrusions 621.

[0061] The pair of protrusions 621 are configured to be plane-symmetrical in the left-right direction. The pair of protrusions 621 are provided at positions corresponding to the pair of recesses 611 on the main body 1 side of the display block 2. Specifically, as shown in FIG. 5, the pair of protrusions 621 are respectively arranged near the lower edges of the rear surfaces of the left and right frame portions 221 of the holder 22 of the display block 2. As shown in FIG. 5, each protrusion 621 protrudes from the bottom surface of a groove like an elongated slit formed on the rear surface of the frame portion 221. Each protrusion 621 is exposed rearward from the rear surface of the frame portion 221.

[0062] In other words, the second portion 62 of the second suppression portion 6B includes a protrusion 621 that protrudes from the display block 2.

[0063] (2-5) Construction procedure The procedure for installing the display device B1 will be briefly described below.

[0064] First, the worker performing the installation work pulls in the power line from the power supply hole 15 (see FIG. 4) provided on the bottom surface of the main body 1, and then attaches the main body 1 to a structure in the facility (here, the wall W1 of the building as shown in FIG. 4) with wood screws or nails. Next, the worker electrically connects the power line pulled in from the power supply hole 15 to the terminal block 12.

[0065] 4, the worker attaches the display block 2 to the main body 1. Specifically, the worker brings the back surface of the display block 2 into contact with the front surface of the main body 1, with the main body 1 attached to the facility structure (wall W1), so that the top end of the display block 2 is at the same position as (or slightly below) the top end of the main body 1. As a result, the tips of the pair of claws 610 on the main body 1 side are inserted into the pair of grooves 620 on the display block 2 side, respectively.

[0066] Then, during the sliding process in which the worker slides the display block 2 downward along the pair of wall surfaces 102, the tips of the pair of claws 610 slide within the pair of grooves 620 while being inserted into the pair of grooves 620. That is, when the worker slides the display block 2 in one direction (downward) along the wall surfaces 102, the tips of the claws 610 slide within the grooves 620 while being inserted into the grooves 620. In other words, the grooves 620 also have a guide function for guiding the claws 610 during the sliding process.

[0067] During the sliding process, the four plate-shaped holders 7 slide into the inside of the four hook-shaped slide pieces (Y1, Y2) on the display block 2 (see FIG. 8B). For example, when a pair of slide pieces Y2 hits the lower pieces of a pair of approximately L-shaped holders 7B, further downward sliding of the display block 2 is restricted.

[0068] In other words, the four slide pieces (Y1, Y2) slide and engage with the four holders 7, achieving the holding of the display block 2 by the holders 7 and completing the work of attaching the display block 2 to the main body 1. Fig. 8B is a cross-sectional view of the essential parts, showing the state in which the right-hand holder 7A of the pair of holders 7A is engaged with the inside of the right-hand slide piece Y1 of the pair of slide pieces Y1, after the display block 2 has been attached to the main body 1 (see Fig. 1A). Fig. 8B is a cross-sectional view of the essential parts, including the right-hand holder 7A and slide piece Y1, viewed from below.

[0069] Furthermore, during the sliding process, the pair of protrusions 621 enter the pair of recesses 611 from above. That is, the protrusions 621 enter the recesses 611 by sliding the display block 2 in one direction (downward) along the wall surface 102. In other words, the protrusions 621 enter between the wall surface 102 and the protrusion X1.

[0070] In this way, the four slide pieces (Y1, Y2) of the display block 2 slide and engage with the four holding portions 7, so that the display block 2 is held in the main body 1 in a position where its lower surface is approximately flush with the lower surface of the main body 1. When the display block 2 is held, the tips of the pair of claws 610 are maintained in the pair of grooves 620, respectively, and the pair of protrusions 621 are maintained in the pair of recesses 611, respectively.

[0071] Here, the four holding portions 7 alone may be able to restrict only the movement of the display block 2 along the thickness direction (front-rear direction) and further movement downward. However, in this embodiment, the suppressing portion 6 (first suppressing portion 6A) suppresses the movement of the display block 2 by inserting the tips of the claw portions 610 into the groove portions 620. Furthermore, the suppressing portion 6 (second suppressing portion 6B) suppresses the movement of the display block 2 by inserting the protrusion portion 621 into the recess 611 (here, by inserting between the wall surface 102 and the protrusion X1). In other words, by inserting the tips of the pair of claw portions 610 into the pair of groove portions 620, when an external force is applied, the tips of the claw portions 610 abut (i.e., engage) with the inner surfaces of the groove portions 620, and the movement of the display block 2 along both the left-right direction and the rotational direction D1 is suppressed. Furthermore, since the pair of protrusions 621 are fitted into the pair of recesses 611, when an external force is applied, the protrusions 621 come into contact with (i.e., engage with) the inner surfaces of the recesses 611, thereby suppressing movement of the display block 2 in both the left-right direction and the rotational direction D1. In particular, the first suppression unit 6A and the second suppression unit 6B cooperate with each other to further suppress movement of the display block 2 in the rotational direction D1.

[0072] In this embodiment, in consideration of ease of attachment and detachment of the display block 2 to and from the main body 1, as shown in Fig. 8A, the tip of each claw 610 is fitted into the corresponding groove 620 with a gap to allow slight displacement, but may also be fitted in with almost no gap. Similarly, in this embodiment, as shown in Fig. 8C, each protrusion 621 is fitted into the corresponding recess 611 with a gap to allow slight displacement, but may also be fitted in with almost no gap.

[0073] Finally, the worker attaches the light source unit A1 to the main body 1. Specifically, the worker inserts the narrow portion of the board on which the LEDs 300 are mounted into the connector 14 of the main body 1, inserts the pair of support pieces 47 into the inside of the main body 1, and hooks the claws provided at the tips of the pair of mounting pieces 46 onto the edges of holes provided on the top surface of the main body 1. As a result, the light source unit A1 is attached to the main body 1 in a manner such that it is arranged on the display block 2.

[0074] In this manner, the installation of the display device B1 is completed.

[0075] If the battery unit 13 needs to be replaced, the light source unit A1 is first removed from the main body 1, and then the display block 2 can be removed from the main body 1 by sliding it upward and then moving it forward. In short, the suppression part 6 and the holding part 7 are configured to allow the display block 2 to be easily attached and detached from the main body 1.

[0076] (3) Advantages of the display device according to the embodiment As described above, the provision of the suppression unit 6 suppresses movement of the display blocks 2 along at least one of the arrangement direction (left-right direction) and the rotation direction D1. Therefore, when the display device B1 is subjected to an external force caused by shaking such as an earthquake, it is possible to suppress movement of the display blocks 2 due to the external force. As a result, the display device B1 not only prevents the display blocks 2 from falling off the main body 1, but also increases the likelihood of preventing the display blocks 2 from shifting and twisting relative to the main body 1.

[0077] Furthermore, the first suppression part 6A is disposed outside (towards the upper end E1 of the main body 1) the two pairs of holding parts 7, and the second suppression part 6B is disposed outside (towards the lower end E2 of the main body 1) the two pairs of holding parts 7. This further suppresses movement of the display block 2 due to external force (particularly movement along the rotation direction D1).

[0078] Furthermore, the main body 1 and the first portion 61 (the claw portion 610 and the protrusion X1) are molded resin components that are integrally formed with each other, which makes it easier to prevent an increase in the number of parts compared to when the main body 1 and the first portion 61 are separate bodies.

[0079] Furthermore, the first suppression unit 6A suppresses movement of the display block 2 by inserting the tips of the claws 610 into the grooves 620, and thus the simple structure can suppress movement of the display block 2. The second suppression unit 6B suppresses movement of the display block 2 by inserting the protrusions 621 into the recesses 611, and thus the simple structure can suppress movement of the display block 2.

[0080] Furthermore, groove 620 functions to guide claw 610, suppressing movement of display block 2 due to external force while facilitating attachment of display block 2 to main body 1. Furthermore, protrusion 621 enters recess 611 through a sliding process, thereby facilitating attachment of display block 2 to main body 1 while suppressing movement of display block 2 due to external force.

[0081] Furthermore, the recess 611 is formed by the wall surface 102 of the main body 1 and the protrusion X1, and has a simple structure that can suppress movement of the display block 2 due to external force.

[0082] In this embodiment, the upper first suppression unit 6A and the lower second suppression unit 6B employ a configuration in which the relationship between the convex and concave structures of the first portion 61 and the second portion 62 is reversed. That is, in the upper first suppression unit 6A, the concave structure (groove portion 620) is disposed on the display block 2 side, and the convex structure (claw portion 610) is disposed on the main body 1 side. However, in the lower second suppression unit 6B, the convex structure (protrusion portion 621) is disposed on the display block 2 side, and the concave structure (recess 611) is disposed on the main body 1 side. By employing such a configuration in which the relationship between the convex and concave structures is reversed between the upper and lower portions, the position of the second engagement portion between the protrusion portion 621 and the recess 611 is shifted further back in the thickness direction (front-rear direction) of the display block 2 than the position of the first engagement portion between the claw portion 610 and the groove portion 620. For example, when a display device B1 installed on a ceiling or the like is subjected to an external force caused by shaking such as an earthquake, the lower side of the display block 2 is more likely to shake than the upper side. However, as described above, since the position of the lower second engagement portion is shifted further back, the stress acting on the lower second engagement portion is more easily distributed than when the first engagement portion and the second engagement portion are in the same position in the front-to-back direction.

[0083] Furthermore, if a convex structure (claw portion 610) is arranged on the upper side of the display block 2, the convex structure may narrow the working space, making it difficult to perform the work. However, as in this embodiment, by arranging a concave structure (groove portion 620) instead of a convex structure on the upper side of the display block 2, it is possible to reduce the possibility that the working space will become narrow and make it difficult to perform the work.

[0084] (4) Variations Below, modifications of the display device B1 according to the above-described embodiment will be listed.

[0085] In the above-described embodiment, the first suppression portion 6A and the second suppression portion 6B are provided, but there is no particular limitation on the number of suppression portions 6. For example, only the upper first suppression portion 6A or only the lower second suppression portion 6B may be provided, or in addition to the first suppression portion 6A and the second suppression portion 6B, a third suppression portion may be provided between the two pairs of holding portions 7.

[0086] In the above-described embodiment, the upper first suppression portion 6A and the lower second suppression portion 6B are configured such that the relationship between the recessed and projecting structures of the first portion 61 and the second portion 62 is reversed. However, the relationship between the recessed and projecting structures of the first portion 61 and the second portion 62 may be the same. For example, each of the first suppression portion 6A and the second suppression portion 6B may have a recessed structure (groove portion 620) disposed on the display block 2 side and a protruding structure (claw portion 610) disposed on the main body 1 side. Alternatively, each of the first suppression portion 6A and the second suppression portion 6B may have a protruding structure (protrusion portion 621) disposed on the display block 2 side and a recessed structure (recess 611) disposed on the main body 1 side. In other words, the first suppression portion 6A and the second suppression portion 6B may be configured such that the first engagement portion and the second engagement portion are located at the same position in the front-to-rear direction.

[0087] In the above-described embodiment, the position of the second engagement portion on the lower side is shifted rearward relative to the position of the first engagement portion on the upper side. However, conversely, the position of the first engagement portion on the upper side may be shifted rearward relative to the position of the second engagement portion on the lower side. For example, as the upper first suppression portion 6A, a convex structure (protrusion portion 621) may be arranged on the display block 2 side, and a concave structure (recess portion 611) may be arranged on the main body 1 side. In addition, as the lower second suppression portion 6B, a concave structure (groove portion 620) may be arranged on the display block 2 side, and a convex structure (claw portion 610) may be arranged on the main body 1 side.

[0088] In the above-described embodiment, the light source unit A1 includes one light-emitting portion. However, for example, the light source unit A1 may include two light-emitting portions. The two light-emitting portions may be disposed at both ends of the light guide 5 in the longitudinal direction.

[0089] In the above-described embodiment, the display device B1 is a so-called single-sided display device in which the display blocks 2 are attached only to the front surface of the main body 1 and the rear surface of the main body 1 faces the wall surface W1 of the structure. However, for example, the display device B1 may be a so-called double-sided display device in which the display blocks 2 are attached to both the front and rear surfaces of the main body 1. In this case, the display device B1 preferably includes a suppression unit 6 that suppresses movement of the display block 2 on the front side and a suppression unit 6 that suppresses movement of the display block 2 on the rear side. For example, in the above-described embodiment, a total of four first portions 61 are provided near the front edges of the pair of wall surfaces 102 of the main body 1. However, in a double-sided display device, a total of four first portions 61 may be additionally provided near the rear edges of the pair of wall surfaces 102.

[0090] (summary) The above-described embodiments and the like disclose the following aspects.

[0091] A display device (B1) according to a first aspect includes a display block (2) including a display panel (20), a main body (1), and a suppression unit (6). The display panel (20) is illuminated by light emitted from a light source (LED 300). The main body (1) has a pair of side walls (101) with opposing wall surfaces (102), and a pair of holding units (7). The pair of holding units (7) are respectively disposed on the wall surfaces (102) of the pair of side walls (101). The pair of holding units (7) hold the display block (2) in a manner that restricts movement of the display block (2) along its thickness direction and further movement in the one direction (downward) by sliding the display block (2) in one direction (downward) along the wall surfaces (102). The suppression portion (6) suppresses movement of the display block (2) held by the pair of holding portions (7) along at least one of the alignment direction (left-right direction) in which the pair of side walls (101) are aligned and the rotation direction (D1) around the axis (C1) along the thickness direction.

[0092] According to the above aspect, the suppressing portion 6 suppresses movement of the display blocks 2 along at least one of the arrangement direction (left-right direction) and the rotation direction D1. As a result, the display device B1 has the advantage of being able to suppress movement of the display blocks 2 due to external forces.

[0093] Regarding the display device (B1) of the second aspect, in the first aspect, the suppression portion (6) is arranged between a pair of holding portions (7) and one end of both end portions (E1, E2) in one direction (downward) of the main body (1).

[0094] According to the above embodiment, movement of the display block (2) due to an external force is further suppressed.

[0095] In the display device (B1) according to the third aspect, in the first or second aspect, the suppression portion (6) has a first portion (61) and a second portion (62). The first portion (61) is disposed on at least one wall surface (102) of the pair of side walls (101). The second portion (62) is disposed on the display block (2) and can engage with the first portion (61).

[0096] According to the above embodiment, when the first portion (61) and the second portion (62) are engaged with each other, movement of the display block (2) due to an external force is further suppressed.

[0097] In the display device (B1) according to the fourth aspect, in the third aspect, the main body (1) and the first portion (61) are molded resin parts that are integrally formed with each other.

[0098] According to the above embodiment, it is possible to easily prevent an increase in the number of parts compared to when the main body (1) and the first section (61) are separate bodies.

[0099] In the display device (B1) according to the fifth aspect, in the third or fourth aspect, the suppression portion (6) has a pair of first portions (61) respectively disposed on the wall surfaces (102) of the pair of side walls (101). The suppression portion (6) also has a pair of second portions (62) disposed on the display block (2) and capable of engaging with the pair of first portions (61), respectively.

[0100] According to the above aspect, by providing a pair of the first portion (61) and a pair of the second portion (62), movement of the display block (2) due to an external force is further suppressed.

[0101] Regarding the display device (B1) according to the sixth aspect, in any one of the third to fifth aspects, the first portion (61) includes a claw portion (610) protruding in a hook shape from at least one wall surface (102) of the pair of side walls (101). The second portion (62) includes a groove portion (620) arranged in the display block (2). The suppression portion (6) suppresses movement of the display block (2) by inserting the tip of the claw portion (610) into the groove portion (620).

[0102] According to the above aspect, the movement of the display block (2) due to an external force can be suppressed with a simple structure.

[0103] Regarding the display device (B1) according to the seventh aspect, in the sixth aspect, the tip of the claw portion (610) slides within the groove portion (620) while being inserted into the groove portion (620) when the display block (2) is slid in one direction along the wall surface (102).

[0104] According to the above aspect, the display block (2) can be easily attached to the main body (1) while suppressing movement of the display block (2) due to external force.

[0105] With respect to the display device (B1) according to the eighth aspect, in any one of the third to seventh aspects, the first portion (61) includes a recess (611) arranged on at least one wall surface (102) of the pair of side walls (101). The second portion (62) includes a protrusion (621) protruding from the display block (2). The suppression portion (6) suppresses movement of the display block (2) by the protrusion (621) entering the recess (611).

[0106] According to the above aspect, the movement of the display block (2) due to an external force can be suppressed with a simple structure.

[0107] Regarding the display device (B1) of the ninth aspect, in the eighth aspect, the protrusion (621) enters the recess (611) by sliding the display block (2) in one direction (downward) along the wall surface (102).

[0108] According to the above aspect, the display block (2) can be easily attached to the main body (1) while suppressing movement of the display block (2) due to external force.

[0109] In the eighth or ninth aspect of the display device (B1) according to the tenth aspect, the recess (611) is formed by at least one wall surface (102) of the pair of side walls (101) and a hook-shaped protrusion (X1) protruding from the wall surface (102). The suppressing portion (6) suppresses movement of the display block (2) by inserting the protrusion (621) between the wall surface (102) and the protrusion (X1).

[0110] According to the above aspect, the movement of the display block (2) due to an external force can be suppressed with a simple structure.

[0111] A display device (B1) according to an eleventh aspect is any one of the first to tenth aspects, and includes at least a first suppression part (6A) and a second suppression part (6B) as the suppression part (6). The pair of holding parts (7) are located between the first suppression part (6A) and the second suppression part (6B) in one direction (downward).

[0112] According to the above aspect, movement of the display block (2) due to an external force can be further suppressed.

[0113] In the eleventh aspect of the display device (B1) according to the twelfth aspect, when the main body (1) is attached to a structure in the facility, the first suppression portion (6A) is located above the pair of holding portions (7). Furthermore, when the main body (1) is attached to a structure in the facility, the second suppression portion (6B) is located below the pair of holding portions (7). The first suppression portion (6A) includes a claw portion (610) protruding like a hook from at least one wall surface (102) of the pair of side walls (101) and a groove portion (620) disposed in the display block (2). The first suppression portion (6A) suppresses movement of the display block (2) by inserting the tip of the claw portion (610) into the groove portion (620). The second suppression portion (6B) includes a recess (611) disposed on at least one wall surface (102) of the pair of side walls (101) and a protrusion (621) protruding from the display block (2). The second restricting portion (6B) restricts the movement of the display block (2) by the projection (621) entering the recess (611).

[0114] According to the above aspect, in the thickness direction of the display block 2, the position of the second engagement portion below the protrusion 621 and the recess 611 is shifted further back than the position of the first engagement portion above the claw 610 and the groove 620. Therefore, when subjected to shaking such as an earthquake, the load acting on the second engagement portion can be more easily distributed.

[0115] A display device (B1) according to a thirteenth aspect is any one of the first to twelfth aspects, further comprising a light source unit (A1). The light source unit (A1) has a light source (LED300) and a light guide (5) that guides light emitted from the light source (LED300) to the display panel (20), and is held by the main body (1).

[0116] According to the above aspect, in the display device (B1) in which not only the display block (2) but also the light source unit (A1) is held by the main body (1), movement of the display block (2) due to an external force can be suppressed.

[0117] The configurations according to the second to thirteenth aspects are not essential for the display device (B1) and can be omitted as appropriate. [Explanation of symbols]

[0118] A1 Light Source Unit B1 Display device 1 Main unit 101 Side wall 102 Wall 2 Display Block 20 Display panel 5 Light guide 6 Suppression part 6A 1st suppression part 6B 2nd suppressor 61 Part 1 610 Claw 611 recess 62 Part 2 620 Groove 621 Protrusion 7 Holding part 300 LEDs (light source) C1 axis D1 Rotation direction E1 Upper end (end) E2 Lower end (end) X1 protrusion

Claims

1. a display block including a display panel illuminated by light emitted from a light source; a main body including a pair of side walls whose wall surfaces face each other, and a pair of holders that are respectively disposed on the wall surfaces of the pair of side walls and that hold the display block in a manner that restricts movement of the display block along the thickness direction and further movement in the one direction by sliding the display block along the wall surfaces; a suppression unit that suppresses movement of the display block held by the pair of holding units along at least one of a direction in which the pair of side walls are aligned and a rotation direction around an axis along the thickness direction; Equipped with The suppressing portion is disposed between the pair of holding portions and one end of both end portions of the main body in the one direction. Display device.

2. A display block including a display panel illuminated by light emitted from a light source; a main body including a pair of side walls whose wall surfaces face each other, and a pair of holders that are respectively disposed on the wall surfaces of the pair of side walls and that hold the display block in a manner that restricts movement of the display block along the thickness direction and further movement in the one direction by sliding the display block along the wall surfaces; a suppression unit that suppresses movement of the display block held by the pair of holding units along at least one of a direction in which the pair of side walls are aligned and a rotation direction around an axis along the thickness direction; Equipped with The suppression unit is a first portion disposed on the wall surface of at least one of the pair of side walls; a second portion disposed on the indicator block and engageable with the first portion; having Display device.

3. The main body and the first portion are molded resin articles integrally formed with each other. The display device according to claim 2 .

4. The suppression section a pair of the first portions disposed on the wall surfaces of the pair of side walls, respectively; a pair of second portions disposed on the display block and capable of engaging with the pair of first portions, respectively; having The display device according to claim 2 or 3.

5. The first portion includes a claw portion protruding in a hook-like shape from the wall surface of at least one of the pair of side walls, the second portion includes a groove disposed in the display block; The suppressing portion suppresses movement of the display block by inserting the tip of the claw portion into the groove portion. The display device according to any one of claims 2 to 4.

6. The tip of the claw portion slides within the groove portion while being inserted into the groove portion when the display block is slid in the one direction along the wall surface. The display device according to claim 5 .

7. The first portion includes a recess disposed on the wall surface of at least one of the pair of side walls, the second portion includes a protrusion protruding from the display block, the suppression portion suppresses movement of the display block by the protrusion entering the recess. The display device according to any one of claims 2 to 6.

8. The protrusion enters the recess by sliding the display block along the wall surface in the one direction. The display device according to claim 7 .

9. The recess is formed by the wall surface of at least one of the pair of side walls and a protrusion protruding from the wall surface in a hook shape, the suppressing portion suppresses movement of the display block by inserting the protruding portion between the wall surface and the protrusion. The display device according to claim 7 or 8.

10. The suppression unit includes at least a first suppression unit and a second suppression unit, The pair of holding portions are located between the first suppression portion and the second suppression portion in the one direction. The display device according to any one of claims 1 to 9.

11. A display block including a display panel illuminated by light emitted from a light source; a main body including a pair of side walls whose wall surfaces face each other, and a pair of holders that are respectively disposed on the wall surfaces of the pair of side walls and that hold the display block in a manner that restricts movement of the display block along the thickness direction and further movement in the one direction by sliding the display block along the wall surfaces; a suppression unit that suppresses movement of the display block held by the pair of holding units along at least one of a direction in which the pair of side walls are aligned and a rotation direction around an axis along the thickness direction; Equipped with The suppression unit includes at least a first suppression unit and a second suppression unit, The pair of holding portions are located between the first suppression portion and the second suppression portion in the one direction. Display device.

12. When the main body is attached to a structure in a facility, the first suppression portion is located above the pair of holding portions, and the second suppression portion is located below the pair of holding portions, The first suppression unit is a claw portion protruding in a hook shape from the wall surface of at least one of the pair of side walls; a groove portion disposed on the display block; Including, the first suppression portion suppresses movement of the display block by inserting a tip of the claw portion into the groove portion; The second suppression portion is a recessed portion disposed on the wall surface of at least one of the pair of side walls; a protrusion protruding from the display block; Including, the second suppression portion suppresses movement of the display block by the protrusion entering the recess. The display device according to claim 10 or 11.

13. a light source unit having the light source and a light guide that guides the light emitted by the light source to the display panel, the light source unit being held by the main body; The display device according to any one of claims 1 to 12.

Images