JP2023005287A - Display device - Google Patents

Abstract

To simplify wiring.SOLUTION: In a display device B1, a first light source unit A1 comprises a first input part (a board 301A and electrodes) to which power for lighting is inputted. A second light source unit A2 comprises a second input part (a board 301B and electrodes) to which power for lighting is inputted. The first input part and the second input part are located at positions overlapping with each other when viewed from a front-back direction of a main body. A wiring member comprises a connector part 7 electrically connected to the first input part and the second input part, and a conductor electrically connecting the connector part 7 to a power supply device.SELECTED DRAWING: Figure 8

Description

TECHNICAL FIELD The present disclosure relates to a display device, and more particularly to a display device having display panels on each of the front and rear surfaces of a main body.

As a conventional example, a guide light (display device) described in Patent Document 1 will be exemplified. The guide light described in Patent Document 1 (hereinafter referred to as conventional example) is a double-sided light that is directly attached to the ceiling surface of a room or the like, and displays a pattern indicating an emergency exit or the like.

A conventional example includes a main body, two display units, two lamp holder units, and so on. The main body has a body frame, which is a housing, and electrical components such as a terminal block, a battery, and a lighting device, which are built inside the body frame. The body frame has a substantially hollow rectangular parallelepiped shape, and the front and rear faces are substantially entirely open. The front and rear faces of the body frame are approximately the same size as the display unit, and the front and rear openings of the body frame are also approximately the same size as the display unit.

Each of the two display units is arranged so that a pattern indicating an emergency exit or the like can be seen on its surface. One display unit is arranged on each of the front side and the rear side of the main body.

Each of the two lampholder units contains a light source. One lamp holder unit is arranged above each of the display units on the front side and the rear side.

The light emitted from the light source built in the lamp holder unit is incident on the display unit from the upper end, and the incident light emits a printed pattern indicating an emergency exit or the like.

JP 2014-17255 A

By the way, when one lamp holder unit (light source unit) is provided on each of the front and rear surfaces of the main body as in the conventional example described in Patent Document 1, the lighting device incorporated in the main body and each lamp holder unit are electrically connected. Wiring processing is likely to be complicated.

An object of the present disclosure is to provide a display device capable of simplifying wiring.

A display device according to an aspect of the present disclosure includes a first light source unit having a first input section to which power for lighting is input, and a second input section to which the power for lighting is input. 2 light source units. The display device comprises a first display panel illuminated by the first light source unit and a second display panel illuminated by the second light source unit. The display device includes a power supply device that supplies power for lighting, the first light source unit, the second light source unit, the first display panel, the second display panel, and the power supply device. a box-like body for holding. The display device includes a wiring member that electrically connects the first light source unit and the second light source unit to the power supply device and serves as a power supply path for the lighting power. The first light source unit and the first display panel are held by the main body so as to cover the front surface of the main body. The second light source unit and the second display panel are held by the main body so as to cover the rear surface of the main body. The first input section and the second input section overlap each other when viewed from the front-rear direction of the main body. The wiring member has a connector portion electrically connected to the first input portion and the second input portion, and a conductor electrically connecting the connector portion to the power supply device.

The display device of the present disclosure has the effect of simplifying the wiring.

1A is a front perspective view of a display device according to an embodiment of the present disclosure; FIG. FIG. 1B is a perspective view of the display device as seen from the rear. FIG. 2 is an exploded perspective view of the same display device as seen from the front. FIG. 3 is an exploded perspective view of the same display device with the first display block omitted. FIG. 4 is an exploded perspective view of a connector portion in the same display device. FIG. 5 is a rear perspective view of the first light source unit in the same display device. FIG. 6 is an exploded perspective view of the first light source unit as seen from the rear. FIG. 7A is a front view of a light emitting block in the first light source unit; FIG. 7B is a left side view of the light emitting block; FIG. 7C is a right side view of the light emitting block; FIG. 8 is a perspective view of the main part of the same display device, omitting the main body, the housing, the first cover of the connector part, and the like. FIG. 9 is a cross-sectional view of the main part including the first light source unit and the first display block of the display device of the same.

A display device according to an embodiment of the present disclosure will be described in detail with reference to the drawings. However, each drawing described in the following embodiments is a schematic drawing, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. 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 can be made according to design and the like as long as the effects of the present disclosure can be achieved.

(1) Overview of display device according to embodiment A display device B1 according to an embodiment of the present disclosure includes a first light source unit A1, a second light source unit A2, a first display panel 20A, and a second It includes a display panel 20B, a power supply device 11, a main body 1, and wiring members (see FIG. 2).

The first display panel 20A is illuminated by the first light source unit A1. The second display panel 20B is illuminated by the second light source unit A2. The power supply device 11 supplies power for lighting to the first light source unit A1 and the second light source unit A2. The main body 1 holds a first light source unit A1, a second light source unit A2, a first display panel 20A, a second display panel 20B, and a power supply device 11. FIG. The wiring member electrically connects the first light source unit A1 and the second light source unit A2 to the power supply device 11, and serves as a power feed path for lighting.

The main body 1 is formed in a box shape. The first light source unit A1 and the first display panel 20A are held by the main body 1 so as to cover the front surface of the main body 1 (see FIG. 1A). The second light source unit A2 and the second display panel 20B are held by the body 1 so as to cover the rear surface of the body 1 (see FIG. 1B).

The first light source unit A1 has a first input section (substrate 301A, electrode 302A) to which power for lighting is input. The second light source unit A2 has a second input portion (substrate 301B, electrode 302B) to which electric power for lighting is input. The first input section and the second input section overlap each other when viewed from the front-rear direction of the main body 1 (see FIG. 2). The wiring member includes a connector portion 7 electrically connected to the first input portion and the second input portion, and a conductor (for example, electric wire 16) electrically connecting the connector portion 7 to the power supply device 11. have.

Thus, in the display device B1 according to the embodiment, the first input portion of the first light source unit A1 and the second input portion of the second light source unit A2 overlap each other when viewed from the front-rear direction of the main body 1. placed in position. Therefore, in the display device B1 according to the embodiment, compared to the case where the first input section and the second input section are distributed to both ends in the longitudinal direction of the first light source unit A1 and arranged in the main body 1, the wiring can be simplified. Here, "wiring simplification" refers to the distance (wiring length length), wiring saving (reduction in the number of wires), and the like.

(2) Details of Display Device According to Embodiment A display device B1 (hereinafter abbreviated as display device B1) according to the embodiment will be described with reference to the drawings. The display device B1 described below is installed at an evacuation exit or a passage to an evacuation exit of a building such as an office or a store, and is a so-called double-sided display device for guiding evacuation in two directions, front and rear. is the guide light. However, the display device according to the embodiment is not limited to the guide light, and may be used, for example, for displaying a specific place (restroom, etc.) in the building. In the following description, unless otherwise specified, the up/down, front/rear, and left/right directions indicated by arrows in FIGS. 1A and 1B are defined as the up/down, front/rear, and left/right directions of the display device B1.

The display device B1 includes a first light source unit A1, a second light source unit A2, a first display block 2A, a second display block 2B, a main body 1, and the like (see FIGS. 1 to 3).

(2-1) Main Body The main body 1 is made of a synthetic resin material and is shaped like a square box having an opening at the front (see FIG. 2). However, the main body 1 may be formed in a box shape with an opening on the rear surface, or may be formed in a box shape with no openings on either the front surface or the rear surface. The main body 1 includes a power supply device 11 for lighting the first light source unit A1 and the second light source unit A2, a battery unit 13 having a secondary battery, a terminal block 12, a mounting plate 10, a connector section 7, an electric wire 16, and the like. accommodates

A power source hole 15 (see FIGS. 1 and 2) for drawing in the power cable 6 (see FIG. 3) is provided in the upper wall of the main body 1. As shown in FIG. The power supply hole 15 is opened substantially in the center of the upper wall in the longitudinal direction (horizontal direction). In addition, the power cable 6 has two power lines 60 and serves as a feeding path for AC power (regular power) supplied from a regular power supply (for example, a commercial power system).

(2-1-1) Mounting Plate The mounting plate 10 is formed in a plate shape from a metal material (see FIG. 2). The mounting plate 10 is screwed to the inner bottom surface of the main body 1 . The power supply device 11 and the terminal block 12 are screwed to the mounting plate 10 and accommodated in the main body 1 . Note that the battery unit 13 is detachably attached to the mounting plate 10 .

(2-1-2) Power Supply Device The power supply device 11 lights the first light source unit A1 and the second light source unit A2 and charges the battery unit 13 with normal power supplied from the normal power supply. Further, the power supply device 11 lights the first light source unit A1 and the second light source unit A2 with the emergency power supplied from the battery unit 13 at the time of power failure of the regular power supply. Note that "charging the battery unit 13" means charging the secondary battery included in the battery unit 13. As shown in FIG. Further, "emergency power supplied from the battery unit 13" means DC power discharged from the secondary battery of the battery unit 13. As shown in FIG.

That is, the power supply device 11 includes a charging circuit for the battery unit 13 and a lighting circuit for lighting the first light source unit A1 and the second light source unit A2 with the normal power supply. The power supply device 11 further includes an emergency lighting circuit that lights the first light source unit A1 and the second light source unit A2 with an emergency power supply, and a case 110 that houses the charging circuit, the lighting circuit, and the emergency lighting circuit. (See Figure 2).

The case 110 is formed in a box shape from a synthetic resin material. The case 110 is housed in the lower right part of the main body 1 and attached to the mounting plate 10 by screwing. An output terminal portion 111 is provided at the upper right corner of the case 110 . The output terminal section 111 has two terminals of a positive pole and a negative pole. These two terminals are connected one by one to the positive and negative terminals of the output terminal of the lighting circuit.

(2-1-3) Terminal Block The terminal block 12 is made of a synthetic resin material and shaped like a box. The terminal block 12 is arranged on the upper left side of the power supply device 11 in the main body 1 and attached to the mounting plate 10 by screwing.

A triangular prism-shaped protrusion 120 is formed on the front surface of the terminal block 12 so as to be aligned in the left-right direction (see FIG. 2). Each projection 120 is provided with a plurality of (for example, three) wire insertion holes. The conductors of the two power wires 60 of the power cable 6 are inserted one by one into these wire insertion holes (see FIG. 3). The conductors of the power wires 60 inserted into the wire insertion holes are electrically and mechanically connected one by one to a plurality of screwless terminals (quick-connect terminals) accommodated inside the terminal block 12 . Moreover, the plurality of screwless terminals are electrically connected to the input terminals of the power supply device 11 . In other words, the power line 60 is electrically connected to the power supply device 11 via the terminal block 12 and forms a power feed path for supplying normal power to the power supply device 11 .

(2-1-4) Battery Unit The battery unit 13 has a plurality of secondary batteries and a synthetic resin battery case 130 that houses the plurality of secondary batteries. The plurality of secondary batteries are, for example, cylindrical nickel-metal hydride secondary batteries. Battery case 130 has battery connector 131 electrically connected to a plurality of secondary batteries. The battery connector 131 is electrically connected removably to a receiving connector provided on the case 110 of the power supply device 11 . The battery unit 13 is arranged below the left side of the power supply device 11 (under the terminal block 12) in the main body 1 (see FIG. 3).

(2-1-5) Connector Section The connector section 7 has a synthetic resin housing 70, two first contacts 74A, and two second contacts 74B (see FIG. 4). In the following description, front-back, left-right, and up-down directions indicated by arrows in FIG. The front/rear, left/right, and up/down directions of the connector portion 7 correspond to the front/rear, left/right, and up/down directions of the display device B1.

A total of four contacts (two first contacts 74A and two second contacts 74B) are all formed with the same shape and the same size. The first contact 74A and the second contact 74B are composed of an inverted U-shaped main body portion 740, a pair of spring pieces 741 projecting from one end of the main body portion 740, and prismatic terminal pieces projecting from the other end of the main body portion 740. 742 and . The body portion 740, the pair of spring pieces 741, and the terminal piece 742 are integrally formed by stamping and bending a metal plate.

The housing 70 has a body 71 , a first cover 72 and a second cover 73 . The body 71 has a first side wall 711 , a second side wall 712 , a partition wall 713 , a central wall 714 and a pair of mounting walls 715 .

The first side wall 711 is formed in a rectangular flat plate shape. Two U-shaped insertion grooves 7110 are provided at the upper and lower ends of the first side wall 711 at the center in the longitudinal direction (front-rear direction) of the first side wall 711 so as to be spaced apart in the front-rear direction. Two rectangular holes 7111 are provided at both ends of the first side wall 711 in the short direction (vertical direction) so as to sandwich the two insertion grooves 7110 therebetween.

The second side wall 712 is formed in a rectangular flat plate shape. The second side wall 712 is arranged on the right side of the first side wall 711 so as to be parallel to the first side wall 711 and is connected to the first side wall 711 by a partition wall 713 . The partition wall 713 is formed in a rectangular flat plate shape. The partition wall 713 connects the center of the first side wall 711 and the center of the second side wall 712 in the width direction over the entire length of the first side wall 711 and the second side wall 712 . That is, the first side wall 711, the second side wall 712, and the partition wall 713 are integrally formed in an H shape when viewed from the front. A groove 7130 extending in the front-rear direction is provided at the center in the left-right direction of the front and rear ends of the partition wall 713 .

The center wall 714 is formed in a flat plate shape and provided so as to be perpendicular to the first side wall 711 , the second side wall 712 and the partition wall 713 at the center of the first side wall 711 in the front-rear direction.

Each of the pair of mounting walls 715 is shaped like a crank when viewed from above. One mounting wall 715 is provided between the front end of the partition 713 and the central wall 714 so as to be perpendicular to the first side wall 711 , the second side wall 712 and the partition 713 . The other mounting wall 715 is provided between the rear end of the partition 713 and the central wall 714 so as to be perpendicular to the first side wall 711 , the second side wall 712 and the partition 713 . Also, mounting grooves 7150 whose depth direction is the vertical direction are provided in the upper and lower ends of the pair of mounting walls 715, respectively.

On the upper surface and the lower surface of the partition wall 713, one prismatic support portion 716 is provided in front of the front mounting wall 715 and behind the rear mounting wall 715, respectively. These support portions 716 protrude from the upper and lower surfaces of the partition wall 713 so that their axial directions are aligned in the vertical direction.

The first cover 72 is attached to the first side wall 711 so as to cover the upper surface of the body 71 . The first cover 72 is formed in a rectangular flat plate shape. A pair of ribs 720 is provided at the center of the left end of the lower surface of the first cover 72 in the front-rear direction. The pair of ribs 720 are spaced apart in the front-rear direction and protrude downward. A pair of claws 721 is provided on the left end of the lower surface of the first cover 72 . The pair of claws 721 are L-shaped when viewed from the front. The pair of claws 721 are arranged in the front-rear direction with the pair of ribs 720 interposed therebetween.

The second cover 73 is attached to the first side wall 711 so as to cover the lower surface of the body 71 . The second cover 73 is formed in a rectangular flat plate shape. A pair of ribs 730 is provided at the center of the left end of the upper surface of the second cover 73 in the front-rear direction. The pair of ribs 730 are spaced apart in the front-rear direction and protrude upward. A pair of claws 731 is provided on the left end of the upper surface of the second cover 73 . The pair of claws 731 are L-shaped when viewed from the front. The pair of claws 731 are arranged in the front-rear direction with the pair of ribs 730 interposed therebetween. The first cover 72 and the second cover 73 are formed with the same shape and the same size.

The first cover 72 is attached to the body 71 by hooking a pair of claws 721 on the edges of the two holes 7111 on the upper side of the first side wall 711 . Similarly, the second cover 73 is attached to the body 71 by hooking a pair of claws 731 on the edges of the two holes 7111 on the lower side of the first side wall 711 . Thus, by attaching the first cover 72 and the second cover 73 to the body 71, the rectangular tubular housing 70 is configured.

Here, two insertion openings are vertically aligned in the front and rear surfaces of the housing 70 . One first contact 74A is arranged behind each of the two insertion openings on the front surface. On the other hand, one second contact 74B is arranged behind each of the two insertion openings on the rear surface. The first contact 74A and the second contact 74B are attached to the body 71 by fitting the body portion 740 to the support portion 716 and inserting the terminal piece 742 into the attachment groove 7150 of the attachment wall 715. .

Here, the terminal strips 742 of the first contact 74A and the second contact 74B housed in the upper stage in the housing 70 are electrically connected to each other by the electric wire 75 (see FIG. 8). On the other hand, the conductors of the two electric wires 16 are electrically connected one by one to the terminal piece 742 of the first contact 74A and the terminal piece 742 of the second contact 74B housed in the lower stage in the housing 70 . The conductors of the two electric wires 16 are inserted into the housing 70 through the lower two insertion grooves 7110 out of the four insertion grooves 7110 provided in the first side wall 711 .

The connector portion 7 is attached to a connector attachment portion 18 provided at the upper right corner of the main body 1 (see FIG. 3). The connector mounting portion 18 has a pair of engaging pieces 180 protruding leftward from the upper portion of the right wall of the main body 1 and a pair of engaging projections 181 protruding downward from the right end of the upper wall of the main body 1 . (See Figure 3).

A pair of engaging pieces 180 and a pair of engaging projections 181 are engaged with a total of four projections 700 projecting from the upper and lower surfaces of the housing 70 at both ends in the longitudinal direction (front-rear direction) of the connector 7 . are combined and attached to the main body 1 (see FIG. 3).

Thus, the connector part 7 is attached to the main body 1 so that the front opening of the housing 70 faces the opening of the main body 1 and the rear opening of the housing 70 faces the inner bottom surface of the main body 1 . . A rectangular window 19 is opened at the upper right corner of the inner bottom surface of the main body 1 . Therefore, the rear surface of the housing 70 of the connector portion 7 faces the window 19 of the main body 1 (see FIG. 3).

(2-2) First Display Block and Second Display Block The first display block 2A has a display panel 20A, a light guide plate 21A, and a holder 22A (see FIG. 2). Also, the second display block 2B has a display panel 20B, a light guide plate 21B, and a holder 22B (see FIG. 2).

The display panels 20A and 20B are formed in a rectangular flat plate shape from a translucent synthetic resin material such as acrylic resin or polycarbonate resin. However, the display panels 20A and 20B may be made of a translucent material other than synthetic resin, such as quartz glass. Pictograms for evacuation guidance are displayed on the display surfaces of the display panels 20A and 20B (see FIGS. 1A and 1B).

The light guide plates 21A and 21B are formed in a rectangular flat plate shape from a translucent synthetic resin material such as acrylic resin or polycarbonate resin.

The light guide plate 21A is arranged behind the display panel 20A so that its front surface faces the rear surface of the display panel 20A (see FIG. 2). Light emitted from the first light source unit A1 is incident on the upper surface (incidence surface 210) of the light guide plate 21A. The light incident from the incident surface 210 is guided through the light guide plate 21A and emitted from the front surface (output surface 211) of the light guide plate 21A. The display panel 20A is illuminated by the light emitted from the emission surface 211 of the light guide plate 21A.

The light guide plate 21B is arranged in front of the display panel 20B so that its rear surface faces the front surface of the display panel 20B (see FIG. 2). Light emitted from the second light source unit A2 is incident on the upper surface (incidence surface 210) of the light guide plate 21B. The light incident from the entrance surface 210 is guided through the light guide plate 21B and emitted from the front surface (the exit surface 211) of the light guide plate 21B. The display panel 20B is illuminated by the light emitted from the emission surface 211 of the light guide plate 21B.

The holder 22A is made of a synthetic resin material that does not transmit light, and is formed in the shape of a square box with an open front surface and an upper surface. The holder 22A holds the display panel 20A and the light guide plate 21A so that the display panel 20A is arranged in front of the light guide plate 21A (see FIG. 2).

The holder 22B is made of a non-translucent synthetic resin material and is formed in a rectangular box shape with open rear and upper surfaces. The holder 22B holds the display panel 20B and the light guide plate 21B so that the display panel 20B is arranged in front of the light guide plate 21B (see FIG. 2).

The first display block 2A is attached to the main body 1 so as to cover the rest of the opening of the main body 1, excluding the upper portion where the first light source unit A1 is attached (see FIG. 1A). Also, the second display block 2B is attached to the main body 1 so as to cover the rest of the rear surface of the main body 1 except for the upper portion where the second light source unit A2 is attached (see FIG. 1B).

(2-3) First Light Source Unit and Second Light Source Unit The basic structure of each of the first light source unit A1 and the second light source unit A2 is common. Therefore, hereinafter, the first light source unit A1 will be described with reference to FIGS. 5 to 7, and only the differences from the first light source unit A1 will be described about the second light source unit A2. In the following description, after the numerals for distinguishing the constituent elements common to the first light source unit A1 and the second light source unit A2, the constituent elements of the first light source unit A1 are denoted by the code "A ”, and the constituent elements of the second light source unit A2 are denoted by the reference numeral “B”.

The first light source unit A1 has a light emitting block 3A, a light guide 5A, and a housing 4A (see FIGS. 5 and 6). In the following description, unless otherwise specified, the up/down, front/rear, and left/right directions indicated by arrows in FIG. 6 are defined as the up/down, front/rear, and left/right directions of the first light source unit A1. The up-down, front-back and left-right directions of the first light source unit A1 match the up-down, front-back and left-right directions of the display device B1.

(2-3-1) Light-Emitting Block The light-emitting block 3A has a light-emitting portion 30A, a heat-dissipating member 31A, a fixture 32A, and a heat-conducting member 33A (see FIGS. 6 and 7).

30 A of light emission parts have LED300A which is a solid-state light source, and board|substrate 301A which mounted LED300A. The LED 300A is, for example, a packaged white LED for illumination. The substrate 301A is a printed wiring board formed in a substantially T shape when viewed from the left and right direction (see FIGS. 6 and 7B). An LED 300A is mounted on the surface of the wide portion of the substrate 301A. A pair of electrodes 302A are formed on both front and back surfaces of the narrow portion of the substrate 301A. A pair of electrodes 302A are electrically connected one by one to the anode and cathode of the LED 300A via printed wiring on the substrate 301A.

The heat dissipation member 31A has a heat dissipation plate 310A, a coupling portion 311A thermally coupled to the back surface of the substrate 301A, and two protrusions 312A. 310 A of heat sinks and 311 A of coupling parts are each formed in rectangular flat plate shape. However, the heat sink 310A is formed sufficiently larger than the substrate 301A, and the coupling portion 311A is formed smaller than the substrate 301A. Also, the coupling portion 311A is integrally formed with the heat sink 310A so as to protrude in the thickness direction (front-rear direction) of the heat sink 310A. In other words, the heat radiating member 31A is formed in a substantially L shape by the heat radiating plate 310A and the coupling portion 311A (see FIG. 6).

Each of the two protrusions 312A is formed integrally with the heat sink 310A by cutting and raising a part of the heat sink 310A (see FIGS. 6 and 7A). Each protrusion 312A is formed in a substantially trapezoidal shape when viewed from the front-rear direction. One end of each protrusion 312A (a portion corresponding to the bottom of the trapezoid) is connected to the heat sink 310A. Each protrusion 312A is configured to be displaceable (flexible) in the front-rear direction with one end connected to the radiator plate 310A as a fulcrum.

In addition, one rectangular hole 313A is provided in each center of the heat sink 310A in the longitudinal direction (horizontal direction) in the lateral direction (vertical direction) (see FIGS. 6 and 7A). These two holes 313A respectively penetrate the heat sink 310A in the thickness direction (front-rear direction).

The heat-conducting member 33A is made of, for example, a sheet-shaped silicone resin and is formed in a square shape (see FIG. 6). The thermally conductive member 33A is interposed between the coupling portion 311A and the substrate 301A, and thermally couples the coupling portion 311A and the substrate 301A. That is, heat generated in the LED 300A is conducted from the substrate 301A to the heat dissipation member 31A via the heat conduction member 33A.

The fixture 32A has a main body portion 320A, a first projecting piece 321A, a second projecting piece 322A, a pair of pressing portions 323A, and a pair of claws 324A (see FIGS. 6 and 7). The body portion 320A, the first projecting piece 321A, the second projecting piece 322A, the pressing portion 323A, and the pair of claws 324A are integrally formed of a synthetic resin material.

The body portion 320A is formed in a U shape. Each of the pair of claws 324A is formed in the shape of a truncated pyramid. A pair of claws 324A are provided one each on the inner surface at both ends of the body portion 320A.

The first projecting piece 321A is formed in a rectangular flat plate shape. The first projecting piece 321A faces the front end of the body portion 320A (see FIG. 7C). The second projecting piece 322A is formed in a C shape in plan view (see FIG. 6). The second projecting piece 322A faces the rear end of the body portion 320A (see FIG. 7C). The first projecting piece 321A and the second projecting piece 322A each protrude in the same direction (to the right in FIG. 6) as both ends of the body portion 320A.

Each of the pair of pressing portions 323A is formed in a rectangular parallelepiped shape (see FIG. 6). The pair of pressing portions 323A protrude from the inner side surface (left side surface) of the main body portion 320A.

Thus, the fixture 32A arranges the connecting part 311A between the first projecting piece 321A and the second projecting piece 322A, and hooks the pair of claws 324A on the upper end and the lower end of the substrate 301A one by one, thereby connecting the light emitting part. 30A is fixed to the heat radiating member 31A (see FIG. 7B). The fixture 32A increases the degree of adhesion between the heat conducting member 33A and the connecting portion 311A and the substrate 301A by pressing the connecting portion 311A toward the substrate 301A (leftward) with a pair of pressing portions 323A.

The light emitting block 3B of the second light source unit A2 has the same configuration as the light emitting block 3A of the first light source unit A1.

(2-3-2) Light Guide The light guide 5A is formed in a quadrangular prism shape from a translucent synthetic resin material such as acrylic resin or polycarbonate resin (see FIG. 6). However, the shape of the light guide body 5A is not limited to the shape of a quadrangular prism, and may be a shape such as a quadrangular pyramid or a quadrangular truncated pyramid.

Of the two bottom surfaces (left bottom surface and right bottom surface) facing each other in the longitudinal direction (axial direction) of the light guide 5A, one bottom surface (right bottom surface) serves as an incident surface 50A. Moreover, one side surface (lower surface) of the four side surfaces (front surface, rear surface, upper surface, and lower surface) of the light guide 5A serves as the emission surface 51A. Furthermore, a large number of grooves 54A are provided on the side surface (upper surface) of the light guide 5A facing the emission surface 51A (see FIG. 8). These grooves 54A are arranged in parallel so that the distance between adjacent grooves 54A becomes narrower as the distance from the incident surface 50A increases.

Of the four side surfaces of the light guide 5A, two side surfaces 52A (front surface and rear surface) adjacent to the exit surface 51A are provided with a plurality of (four in the illustrated example) fitting portions 53A. The four fitting portions 53A are provided two each on the two side surfaces 52A. Of the two fitting portions 53A provided on each side surface 52A, the two fitting portions 53A closer to the incident surface 50A are called first fitting portions 53AA, and the two fitting portions farther from the incident surface 50A are called first fitting portions 53AA. 53 A of two fitting parts may be called 2nd fitting part 53AB.

The two first fitting portions 53AA are formed in a quadrangular prism shape with a trapezoidal bottom surface. However, the top surfaces of the two first fitting portions 53AA form a smaller angle with the side surface 52A than the bottom surfaces of the two first fitting portions 53AA.

The two second fitting portions 53AB have a quadrangular prism-shaped projection 530A with a trapezoidal bottom surface and a rectangular parallelepiped projecting base 531A extending straight upward from the upper end of the projection 530A ( See Figure 6). In addition, the upper surface of the projecting base 531A is a downward inclined surface.

(2-3-3) Housing The housing 4A includes a front wall 40A, an upper wall 41A, a pair of side walls 42A, a housing portion 43A, a mounting portion 44A, a plurality of positioning portions 45A, a pair of mounting pieces 46A, and a pair of It has a support piece 47A (see FIG. 6). The front wall 40A is formed in a rectangular flat plate shape. The upper wall 41A is formed in a rectangular flat plate shape and protrudes rearward from the upper end of the front wall 40A. The pair of side walls 42A are each formed in a rectangular flat plate shape and protrude rearward from the left and right ends of the front wall 40A. Upper ends of the pair of side walls 42A are connected to both longitudinal ends of the upper wall 41A. In other words, the housing 4A is formed in a long box shape with an open rear surface and a lower surface by a front wall 40A, an upper wall 41A, and a pair of side walls 42A.

The housing portion 43A is formed in a long box shape with an open front surface, a lower surface and a right side surface (see FIG. 6). The accommodation portion 43A accommodates the light guide body 5A so that the entrance surface 50A is exposed from the right side surface and the exit surface 51A is exposed from the bottom surface (see FIGS. 5 and 6).

The housing portion 43A has a rear plate 430A, an upper plate 431A, a front plate 432A, and side plates 433A (see FIG. 6). The rear plate 430A is formed in a long rectangular shape slightly shorter than the front wall 40A of the housing 4A and faces the front wall 40A in the front-rear direction (see FIG. 6). The upper plate 431A is formed in a long rectangular shape whose length in the longitudinal direction is substantially equal to the length in the longitudinal direction of the rear plate 430A, and protrudes forward from the upper end of the rear plate 430A (see FIG. 9). The side plate 433A is formed in a rectangular flat plate shape and is connected to the left end surfaces of the rear plate 430A and the upper plate 431A (see FIG. 6). A rib 4330 protrudes rightward from the front end of the side plate 433A. The distance between the rear plate 430A and the rib 4330 in the front-rear direction is slightly larger than the thickness of the light guide 5A in the front-rear direction.

Here, the rear plate 430A is provided with two fitted portions 4300 (see FIG. 6). Each of the two fitted parts 4300 is formed of a rectangular hole. These two fitted portions 4300 are fitted with fitting portions (first fitting portion 53AA, second fitting portion 53AB) provided on the rear side surface 52A of the light guide 5A one by one. match.

The front plate 432A is formed in a rectangular flat plate shape. The front plate 432A protrudes downward from the right end of the upper plate 431A so as to face the rear plate 430A (see FIG. 6). The length in the longitudinal direction (horizontal direction) of the front plate 432A is shorter than the length in the longitudinal direction of the radiator plate 310A (see FIG. 6).

The attachment portion 44A has a pair of protrusions 440, a pressing piece 441, a contact piece 442, and a fitting portion, and is configured to attach the light emitting block 3A to the housing 4A (see FIG. 6). reference).

The pair of protrusions 440 is provided on the inner side surface (left side surface) of the right side wall 42A of the pair of side walls 42A (see FIG. 6). The pair of protrusions 440 are formed in a columnar shape with an axial direction extending in the vertical direction. The pair of protrusions 440 protrude from the inner surface of the side wall 42A so as to be aligned in parallel with a predetermined interval in the front-rear direction.

The pressing piece 441 is formed in an L shape when viewed from above and below. The pressing piece 441 is integrally formed with the side wall 42A so as to protrude rearward and leftward from the rear end of the inner surface of the right side wall 42A (see FIG. 6).

The contact piece 442 is provided at the right end of the rear plate 430A (see FIG. 6). The contact piece 442 is L-shaped when viewed from above and is formed integrally with the rear plate 430A so as to protrude rearward and rightward from the right end of the rear plate 430A (see FIG. 6).

The fitting portion is provided on the upper right end of the rear surface of the front wall 40A. The fitting portion is formed in the shape of a triangular prism.

A plurality of (two in this embodiment) positioning portions 45A are provided on both left and right sides of the rear surface of the rear plate 430A (see FIG. 6). Each positioning portion 45A has a pair of rectangular parallelepipeds. The pair of rectangular parallelepipeds protrude rearward from the rear surface of the rear plate 430A so that their axial directions coincide with each other in the vertical direction and are arranged in parallel with a gap of a certain width provided. In addition, the width of the gap in each positioning portion 45A is made slightly larger than the lateral width of the fitting portion 53A of the light guide 5A.

The right fitting portion 53A (first fitting portion 53AA) of the front side surface 52A of the light guide 5A is fitted into the clearance of the right positioning portion 45A. Further, the left fitting portion 53A (second fitting portion 53AB) of the front side surface 52A of the light guide 5A is fitted into the gap of the left positioning portion 45A. That is, the two positioning portions 45A serve to position the light guide 5A housed in the housing portion 43A in the left-right direction with respect to the housing 4A.

The pair of support pieces 47A protrude rearward one by one from both left and right ends of the upper wall 41A. A pair of mounting pieces 46A protrude rearward one by one from the left and right ends of the upper wall 41A. However, each attachment piece 46A is located inside each support piece 47A (see FIG. 6).

The housing 4B (see FIG. 1B) of the second light source unit A2 has a mirror image relationship with the housing 4A of the first light source unit A1. That is, in the housing 4B of the second light source unit A2, the housing portion is left-right reversed from the housing portion 43A, and the position of the mounting portion in the left-right direction is opposite to the position of the mounting portion 44A in the left-right direction. there is

(2-4) Procedure for Assembling Light Source Unit Next, the procedure for assembling the first light source unit A1 will be described. However, the explanation of the assembly procedure of the light emitting block 3A is omitted. Also, the assembly procedure described below is an example, and the order of some procedures can be changed.

First, the operator who performs the assembly work inserts the first fitting portion 53AA and the second fitting portion 53AB on the front side surface 52A of the light guide 5A into the respective gaps between the two positioning portions 45A. Then, the light guide 5A is inserted into the housing portion 43A from the lower surface of the housing portion 43A. At this time, when the upper ends of the first fitting portion 53AA and the second fitting portion 53AB on the rear side surface 52A of the light guide 5A hit the lower end of the rear plate 430A of the housing portion 43A, the rear plate 430A moves backward. bend. Before long, the first fitting portion 53AA and the second fitting portion 53AB are fitted one by one to the two fitted portions 4300 provided on the rear plate 430A, and the rear plate 430A returns to its original state. back to

In this manner, the operator accommodates the light guide 5A in the accommodation portion 43A of the housing 4A. The light guide body 5A housed in the housing portion 43A has two fitting portions 53A (first fitting portion 53AA, second fitting portion 53AB), one fitting portion 4300 and one fitting portion 4300 each. Due to the fitting, it is prevented from coming off from the accommodating portion 43A.

Subsequently, the operator attaches the light emitting block 3A to the attachment portion 44A of the housing 4A. That is, the operator inserts the coupling portion 311A of the light emitting portion 30A, the fixture 32A and the heat radiating member 31A between the right side wall 42A and the right end of the rear plate 430A from below the housing 4A. At this time, the operator inserts the body portion 320A of the fixture 32A between the pair of projections 440. As shown in FIG. At the same time, the operator inserts the radiator plate 310A of the radiator member 31A into the gap between the front wall 40A and the front plate 432A from below the housing 4A.

Then, the upper end of the heat sink 310A climbs over the fitting portion and the fitting portion fits into the hole 313A on the upper side of the heat sink 310A, thereby preventing the heat sink 31A from coming off from the housing 4A. Further, the movement of the fixture 32A in the front-rear direction and the left-right direction is restricted by the pair of protrusions 440, the pressing piece 441 and the contact piece 442 of the mounting portion 44A. Thus, the operator can attach the light emitting block 3A to the attachment portion 44A.

As described above, the assembly of the first light source unit A1 is completed. In the assembled first light source unit A1, the narrow end portion of the substrate 301A of the light emitting portion 30A (the portion where the electrode 302A is provided; hereinafter sometimes referred to as the first input portion) is It protrudes rearward from the pressing piece 441 of the housing 4A (see FIG. 5).

The operator can assemble the second light source unit A2 in the same procedure as for the first light source unit A1.

(2-5) Installation Procedure for Display Device Next, the installation procedure for the display device B1 will be described.

First, the worker who performs the construction work pulls in the power cable 6 from the power supply hole 15 in the upper wall of the main body 1 from which the first light source unit A1 and the first display block 2A have been removed, and then attaches the main body 1 to the ceiling. screw it down.

Subsequently, the worker inserts the conductors of the two power wires 60 of the power cable 6 drawn from the power hole 15 into the two wire insertion holes provided in the projecting base portion 120 of the terminal block 12 one by one. to electrically connect the power cable 6 to the terminal block 12 .

Then, the operator attaches the first display block 2A to the front surface of the main body 1. As shown in FIG.

Finally, the operator hooks the claws provided at the ends of the pair of mounting pieces 46A to the edges of the holes provided on the upper surface of the main body 1, and inserts the substrate 301A into the front opening of the connector portion 7 of the main body 1. (See FIG. 8). The narrow end of the board 301A is inserted between the pair of spring pieces 741 of each of the two first contacts 74A housed in the front half of the housing 70. As shown in FIG. A pair of spring pieces 741 of the upper first contact 74A contacts and conducts with the upper one of the two electrodes 302A of the first input section 302A. A pair of spring pieces 741 of the lower first contact 74A contacts and conducts with the lower one of the two electrodes 302A of the first input section 302A. That is, the two first contacts 74A accommodated in the front half of the housing 70 of the connector section 7 are electrically connected to the light emitting section 30A of the first light source unit A1.

As described above, the construction of the display device B1 is completed.

A narrow end portion (second input portion) of the substrate 301B of the second light source unit A2 is inserted into the rear opening of the connector portion 7 (see FIG. 8). A narrow end of the substrate 301B is inserted between a pair of spring pieces 741 of each of the two second contacts 74B housed in the rear half of the housing 70 . A pair of spring pieces 741 of the upper second contact 74B are in contact with the upper electrode 302B of the two electrodes 302B of the second input section. A pair of spring pieces 741 of the lower second contact 74B are in contact with the lower electrode 302B of the two electrodes 302B of the second input section. That is, the two second contacts 74B housed in the rear half of the housing 70 of the connector section 7 are electrically connected to the light emitting section 30B of the second light source unit A2.

(3) Advantages of the display device according to the embodiment As described above, in the display device B1, the first input section of the first light source unit A1 is one end in the longitudinal direction (horizontal direction) along the front surface of the main body 1. (right end) toward the rear surface of the main body 1. On the other hand, the second input portion of the second light source unit A2 has one end (the left end when viewed from behind) that overlaps one end (right end) in the longitudinal direction of the first light source unit A1 when viewed from the front-rear direction of the main body 1. ) toward the front surface of the main body 1 . The body 1 accommodates a connector portion 14 electrically connected to the first input portion and the second input portion, and two wires 16 electrically connecting the connector portion 14 to the power supply device 11. It is That is, when viewed from the front, the first light source unit A1 and the second light source unit A2 are attached to the housings 4A and 4B, such as housing portions 43A and 43B, mounting portions 44A and 44B, and light emitting blocks 3A and 3B. The arrangement is reversed in the longitudinal direction (horizontal direction) of the housings 4A and 4B. In other words, the first light source unit A1 and the second light source unit A2 are mirror images of each other.

For example, if two light source units have completely the same configuration, the input part of the light source unit attached to the front surface of the main body 1 is arranged at the right end of the main body 1, and the input part of the light source unit attached to the rear surface of the main body 1 is arranged. is arranged at the left end of the main body 1. As a result, a plurality of electric wires serving as power supply lines from the power supply device 11 to the light source unit on the front side and the light source unit on the rear side are routed from the power supply device 11 to the upper right corner and the upper left corner of the main body 1, respectively. The routing of the wiring in the case becomes complicated.

On the other hand, in the display device B1, the first input section of the first light source unit A1 and the second input section of the second light source unit A2 are arranged on the right side of the main body 1. , the connector part 7 can be arranged in the upper right corner in the main body 1 . As a result, in the display device B1, wiring for electrically connecting the power supply device 11 to the first light source unit A1 and the second light source unit A2 can be simplified. However, the first input portion of the first light source unit A1 and the second input portion of the second light source unit A2 only need to be positioned so as to overlap when viewed from the front-rear direction of the main body 1. For example, the first light source unit It may be arranged at the left end of the unit A1 or in the center in the left-right direction. Furthermore, the conductor that electrically connects the power supply device 11 and the connector section 7 is not limited to the electric wire 16, but may be a conductor (copper foil) formed on a printed wiring board, a lead formed of a metal plate, or the like. I don't mind.

Further, in the display device B1, the first light source unit A1 and the second light source unit A2 and the power supply device 11 are electrically connected by one connector portion 7. FIG. Therefore, the display device B1 has two connector portions, a connector portion for the first light source unit A1 and a connector portion for the second light source unit A2. Wiring can be saved by using two electric wires 16 for wiring.

Here, the first input section and the second input section have the same structure, and are connected to the connector section 7 in a state rotated by 180°. Therefore, the first input electrode 302A connected to the upper first contact 74A and the second input electrode 302B connected to the upper second contact 74B have opposite polarities. . Therefore, by electrically connecting the upper first contact 74A and the upper second contact 74B, the two light emitting portions 30A and 30B are formed between the lower first contact 74A and the lower second contact 74B. They are electrically connected in series.

A direct current is supplied from the power supply device 11 to the two light emitting portions 30A and 30B via the lower first contact 74A and the lower second contact 74B. In other words, the display device B1 has the advantage of suppressing a difference in the amount of light emitted from each of the light emitting units 30A and 30B by applying the same DC current to the two light emitting units 30A and 30B. The upper first contact 74A and the upper second contact 74B may be integrally formed, and the terminal pieces 742 of the contacts 74A and 74B may be directly connected to each other without the wire 75 interposed therebetween.

Furthermore, by disposing the connector portion 7 only at the right end of the main body 1, the left ends of the light guides 5A and 5B can be brought closer to the left side surface of the main body 1. FIG. That is, in the display device B1, the end surfaces of the light guide body 5A of the first light source unit A1 and the light guide body 5B of the second light source unit A2 opposite to the incident surface 50A are the side surfaces (left side surfaces) of the main body 1. , the ends of the display panels 20A and 20B (the ends opposite to the light emitting parts 30A and 30B) can be illuminated. As a result, the display device B1 can reduce brightness unevenness on the display surfaces of the display panels 20A and 20B.

By the way, in the display device B1, the power supply device 11 is supported by the main body 1 so as to be shifted to the right from the center in the horizontal direction of the main body 1 . Therefore, in the display device B1, the electric wire 16 connecting the power supply device 11 and the connector portion 7 can be shortened. Furthermore, in the display device B1, since the output terminal portion 111 of the power supply device 11 is provided at the upper right corner on the front surface of the case 110, the electric wire 16 can be further shortened.

In addition, in the display device B1, the terminal block 12 connected to the power cable 6 is arranged on the other end (left end) side of the first light source unit A1 in the longitudinal direction with respect to the power supply device 11 . That is, the display device B1 is supported by the main body 1 so that the terminal block 12 is separated from the output terminal portion 111 of the power supply device 11, and when the power cable 60 is connected to the terminal block 12, the power cable is inserted into the main body 1. 6 and the electric wire 16 can be laid apart. As a result, the display device B1 can simplify the work related to routing the power cable 6 during construction.

Here, in the display device B1, the main body 1 has a plurality (three) of support portions 17 supporting two electric wires 16 along the right wall of the main body 1 (see FIG. 3). These support portions 17 are formed in a plate shape having grooves, and support the electric wires 16 by sandwiching the electric wires 16 in the respective grooves.

Since the display device B1 has the support portion 17 for supporting the electric wire 16 along the wall on the side (right side) on which the connector portion 7 is arranged, Further simplification of work can be achieved.

(4) Summary The display device (B1) according to the first aspect of the present disclosure includes a first light source unit (A1), a second light source unit (A2), a first display panel (20A), a second display panel (20B). The display device (B1) according to the first aspect further includes a power supply device (11), a main body (1), and wiring members (connector section 7, terminal block 12, electric wire 16). The first display panel (20A) is illuminated by a first light source unit (A1). A second display panel (20B) is illuminated by a second light source unit (A2). A power supply device (11) supplies lighting power to the first light source unit (A1) and the second light source unit (A2). A body (1) holds a first light source unit (A1), a second light source unit (A2), a first display panel (20A), a second display panel (20B), and a power supply (11). do. The wiring member electrically connects the first light source unit (A1) and the second light source unit (A2) to the power supply device (11) and serves as a power feed path for lighting. The body (1) is box-shaped. The first light source unit (A1) and the first display panel (20A) are held by the main body (1) so as to cover the front surface of the main body (1). The second light source unit (A2) and the second display panel (20B) are held by the main body (1) so as to cover the rear surface of the main body (1). The first light source unit (A1) has a first input section (substrate 301A, electrode 302A) to which electric power for lighting is input. The second light source unit (A2) has a second input section (substrate 301B, electrode 302B) to which electric power for lighting is input. The first input section and the second input section are positioned to overlap each other when viewed from the front-rear direction of the main body (1). The wiring member includes a connector portion (7) electrically connected to the first input portion and the second input portion, and a conductor (electric wire 16) electrically connecting the connector portion (7) to the power supply device (11). ) and

In the display device (B1) according to the first aspect, the first input section and the second input section are distributed to both longitudinal ends of the first light source unit (A1) and arranged in the main body (1). Wiring can be simplified as compared with the case.

A display device (B1) according to the second aspect of the present disclosure can be realized by a combination with the first aspect. In the display device (B1) according to the second aspect, it is preferable that the first input section protrudes from one longitudinal end along the front surface of the main body (1) toward the rear surface. It is preferable that the second input section protrudes forward from one end overlapping one longitudinal end of the first light source unit (A1) when viewed from the front-rear direction of the main body (1).

In the display device (B1) according to the second aspect, the main body (1 ), it is easy to secure a space for arranging wiring members.

A display device (B1) according to the third aspect of the present disclosure can be realized by a combination with the first or second aspect. In the display device (B1) according to the third aspect, the connector section (7) preferably has first contacts (74A), second contacts (74B), and a housing (70). The first contact (74A) is preferably electrically connected to the first input section. The second contact (74B) is preferably electrically connected to the second input. Housing (70) preferably houses a first contact (74A) and a second contact (74B).

The display device (B1) according to the third aspect electrically connects the first light source unit (A1) and the second light source unit (A2) to the power supply device (11) by one connector section (7). Thus, wiring can be saved.

A display device (B1) according to the fourth aspect of the present disclosure can be realized by a combination with the third aspect. In the display device (B1) according to the fourth aspect, the connector section (7) preferably has two first contacts (74A) and two second contacts (74B). The wiring member includes one conductor (wire 16) electrically connected to one first contact (74A) and another conductor electrically connected to one second contact (74B). (Electric wire 16). It is preferable that the other first contact (74A) and the other second contact (74B) are electrically connected.

A display device (B1) according to a fourth aspect connects a first light source unit (A1) and a second light source unit (A2) to a power supply device (11) via a connector section (7) and two conductors. They can be electrically connected in series. Therefore, in the display device (B1) according to the fourth aspect, the same DC current can flow from the power supply device (11) to the first light source unit (A1) and the second light source unit (A2). . As a result, the display device (B1) according to the fourth aspect can suppress the difference between the light emission amount of the first light source unit (A1) and the light emission amount of the second light source unit (A2).

A display device (B1) according to the fifth aspect of the present disclosure can be realized by a combination with the fourth aspect. In the display device (B1) according to the fifth aspect, it is preferable that the other first contact (74A) and the other second contact (74B) are directly connected.

The display device (B1) according to the fifth aspect can reduce the manufacturing cost by simplifying the structure of the connector section (7).

A display device (B1) according to the sixth aspect of the present disclosure can be realized by a combination with any one of the second to fifth aspects. In the display device (B1) according to the sixth aspect, the power supply device (11) is positioned near one end in the longitudinal direction of the first light source unit (A1) when viewed from the front-rear direction of the main body (1). 1) is preferably supported.

The display device (B1) according to the sixth aspect can shorten the electric wire (16) connecting the power supply device (11) and the first light source unit (A1).

A display device (B1) according to the seventh aspect of the present disclosure can be realized by a combination with the sixth aspect. In the display device (B1) according to the seventh aspect, the power supply device (11) preferably has an output terminal (output terminal section 111) electrically connected to the conductor. In the power supply device (11), it is preferable that the output terminal is arranged near one longitudinal end of the first light source unit (A1) when viewed from the front-rear direction of the main body (1).

In the display device (B1) according to the seventh aspect, since the output terminal of the power supply device (11) is arranged close to one longitudinal end of the first light source unit (A1), the conductor (electric wire 16) can be further shortened.

A display device (B1) according to the eighth aspect of the present disclosure can be realized by a combination with the seventh aspect. Preferably, the display device (B1) according to the eighth aspect further comprises a terminal block (12) to which a power line (60) serving as a power feed line from an external power source to the power source device (11) is electrically connected. . The terminal block (12) is preferably arranged on the other longitudinal end side of the first light source unit (A1) with respect to the power supply device (11) when viewed from the front-rear direction of the main body (1).

In the display device (B1) according to the eighth aspect, the main body (1) supports the terminal block (12) away from the output terminal of the power supply (11), and the power line (60) is connected to the terminal block ( 12), the power supply line (60) and the conductor (electric wire 16) can be laid apart in the main body (1). As a result, the display device (B1) according to the eighth aspect can simplify the work related to routing of the power supply line (60) during construction.

A display device (B1) according to the ninth aspect of the present disclosure can be realized by a combination with any one of the second to eighth aspects. In the display device (B1) according to the ninth aspect, the conductor is preferably an electric wire (16) covered with an insulator. The body (1) preferably has a support (17) for supporting the wire (16). It is preferable that the support portion (17) is arranged close to one longitudinal end of the first light source unit (A1) when viewed from the front-rear direction of the main body (1).

A display device (B1) according to a ninth aspect has a support portion (17) for supporting an electric wire (16) near the side where the first input portion and the second input portion are arranged. Therefore, it is possible to further simplify the work related to routing the power supply line (60) during construction.

A display device (B1) according to the tenth aspect of the present disclosure can be realized by a combination with any one of the first to ninth aspects. The display device (B1) according to the tenth aspect preferably further comprises a secondary battery held in the main body (1). The power supply device (11) is preferably configured to generate power for lighting from regular power supplied from a regular power supply, and to charge the secondary battery with the regular power.

The display device (B1) according to the tenth aspect can realize a guide light for emergency lighting.

B1 display device A1 first light source unit A2 second light source unit 1 main body 7 connector (wiring member)
11 power supply device 12 terminal block (wiring member)
16 electric wire (wiring member; conductor)
17 support portion 60 power wire 70 housing 74A first contact 74B second contact 20A first display panel 20B second display panel 111 output terminal portion (output terminal)
301A substrate (first input section)
301B board (second input unit)
302A electrode (first input section)
302B electrode (second input section)

Claims (10)

a first light source unit having a first input section into which power for lighting is input;
a second light source unit having a second input section into which the power for lighting is input;
a first display panel illuminated by the first light source unit;
a second display panel illuminated by the second light source unit;
a power supply device that supplies power for lighting;
a box-shaped main body holding the first light source unit, the second light source unit, the first display panel, the second display panel, and the power supply;
a wiring member that electrically connects the first light source unit and the second light source unit to the power supply device and serves as a power supply path for the lighting power;
with
the first light source unit and the first display panel are held by the main body so as to cover the front surface of the main body;
the second light source unit and the second display panel are held by the main body so as to cover the rear surface of the main body;
the first input section and the second input section are positioned so as to overlap when viewed from the front-rear direction of the main body;
The wiring member is
a connector section electrically connected to the first input section and the second input section;
a conductor that electrically connects the connector portion to the power supply device;
having
display device. the first input portion protrudes from one longitudinal end along the front surface of the main body toward the rear surface;
The second input portion protrudes toward the front surface from one end that overlaps one end in the longitudinal direction of the first light source unit when viewed from the front-rear direction of the main body.
The display device according to claim 1. The connector section
a first contact electrically connected to the first input section;
a second contact electrically connected to the second input;
a housing that accommodates the first contact and the second contact;
having
3. The display device according to claim 1 or 2. The connector section has two each of the first contacts and the second contacts,
The wiring member is
one of the conductors electrically connected to one of the first contacts;
another one of the conductors electrically connected to one of the second contacts;
has
the other first contact and the other second contact are electrically connected;
4. The display device according to claim 3. The other first contact and the other second contact are directly connected,
5. The display device according to claim 4. The power supply device is supported by the main body so as to be close to one end of the first light source unit in the longitudinal direction when viewed from the front-rear direction of the main body.
The display device according to any one of claims 2-5. The power supply device has an output terminal electrically connected to the conductor,
In the power supply device, the output terminal is arranged near one end of the first light source unit in the longitudinal direction when viewed from the front-rear direction of the main body,
7. The display device according to claim 6. further comprising a terminal block to which a power supply line serving as a power supply path from an external power supply to the power supply is electrically connected,
The terminal block is arranged on the other end side of the first light source unit in the longitudinal direction with respect to the power supply device when viewed from the front-rear direction of the main body.
The display device according to claim 7. The conductor is an electric wire covered with an insulator,
The main body has a support portion that supports the electric wire,
The support portion is arranged near one end in the longitudinal direction of the first light source unit when viewed from the front-rear direction of the main body,
The display device according to any one of claims 2-8. Further comprising a secondary battery held in the main body,
The power supply device is configured to generate the lighting power from regular power supplied from a regular power supply and to charge the secondary battery with the regular power.
The display device according to any one of claims 1-9.

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