JP4370566B2 - Display panel - Google Patents

Description

  The present invention relates to a display panel used as a video or television display, and more particularly to a highly convenient portable display panel that can be connected to and driven by various devices.

  In recent years, a car navigation system capable of displaying a route to a destination on a display panel when moving by a car has been remarkably spread. However, such a display panel is also commonly used as a television monitor or a video monitor. ing.

  As such a display panel, there is a portable type that is integrated with a device main body incorporating a disk drive or a TV tuner for driving a DVD or the like, and this is arranged on a dashboard in a car or the like. (For example, Patent Document 1).

  In addition, a display panel (monitor unit) that is opened in a standing position in the passenger compartment is an operation display unit integrated with the CD unit, which is detachable from a storage unit provided in the dashboard. (For example, Patent Document 2).

Japanese Patent Laid-Open No. 08-292724

JP-A-10-329616

  However, since the vehicle-mounted monitor as shown in Patent Document 1 is fixed to a monitor mounting device provided on the dashboard, there is a problem that the aesthetics in the vehicle is impaired during installation. In particular, the in-vehicle monitor has the advantage that it can be removed from the mounting device when not in use to prevent theft, but the attachment / detachment operation is cumbersome and the monitor fixing handle is bare, so you forgot to remove the monitor In some cases there is a high risk of being stolen.

  In this respect, the operation display unit of Patent Document 2 is the same, and the operation display unit itself does not have a lock function, and the unit is only fixed by a bare lock arm provided on the mounting side, so there is a high risk of theft. . The operation display unit is provided with a plug that connects to the receptacle on the mounting side, but there is a possibility that both of them are connected inappropriately.

  Further, conventional monitors disclosed in Patent Documents 1 and 2 are generally integrated with a disk drive for driving a disk such as a CD or a device main body incorporating a TV tuner, and are large and heavy. Therefore, there is a problem that the portability is inferior.

  The present invention has been made in view of the circumstances as described above, and its purpose is to make it possible to connect and drive various electronic devices and to make it a removable type and portable type, which is excellent in theft prevention effect and portability. It is to provide a highly convenient display panel.

  In order to achieve the above object, the present invention provides a display panel in which a flat image display element forming a display surface is attached in a state where the display surface is exposed from a window portion of an outer frame, and a direction intersecting the display surface One end surface of the outer frame is an operation unit provided with operation switches, and the other end side facing the operation unit is connected to an external output terminal and has an input terminal for acquiring a visual signal The connecting portion is formed with two lock holes with positioning claws and a positioning pin insertion hole with a predetermined distance between them, toward the operation portion side. A lock mechanism including a trigger lever for restraining the hooking claw and a slide plate for holding the hooking claw by the trigger lever is provided inside the outer frame.

  In the display panel as described above, the coupling portion is provided with a lock operation hole for operating the slide plate from the outside.

  Further, the coupling portion is characterized in that a receiving port having a concave cross section is formed by allowing the back surface of the outer frame facing the exposed side of the display surface to enter inward from one end edge thereof.

  According to the display panel of the present invention, since one end surface in the direction intersecting the display surface is used as the operation unit, the operation switches do not appear on the display surface side in use, and there is an aesthetic effect, and the operation unit is operated. Necessary operations can be performed when lying down toward the elderly.

  In addition, since the lock mechanism is built in, it is possible to obtain the effect of locking the connected device to prevent it from falling off or preventing theft, and the lock operation and the release operation can be performed from the outside using the lock operation hole. Since the lock operation hole is provided in the coupling portion, the lock operation hole does not appear outside in the coupled state, and the antitheft effect is improved.

  Furthermore, since it has an input terminal for acquiring a visual signal from the outside, it is easy to carry because it can be made thin without being integrated with a drive device such as a disk drive, and the coupling part including the input terminal is an outer frame. Since the concave receiving port is formed on the back surface of the, the input terminal and the external output terminal connected to the input terminal are concealed so that the appearance during use is not impaired.

  Hereinafter, the present invention will be described in detail with reference to the drawings. 1A and 1B are schematic views showing how the display panel is used. FIG. 1A shows a storage state of the display panel, and FIG. 1B shows an open state of the display panel.

  In FIG. 1, 1 is a display panel (panel-like display device) according to the present invention, 2 is an apparatus main body (disk reproducing device for driving a disk such as a DVD in this example), and 3 is a display panel. In addition, a traveling unit 4 for discharging / inserting the display panel 1 is provided in the housing 3 so as to be capable of reciprocating in the front-rear direction (left-right direction in FIG. 1). In particular, the traveling unit 4 is configured by rotatably providing a panel connecting portion 6 for connecting the display panel 1 to one end portion of the unit base 5, and the panel connecting portion 6 is connected to the device main body via a flexible wiring 7. 2 is connected.

  Then, recording information (visual signals such as maps and videos) reproduced and driven in the device main body 2 is input from the flexible wiring 7 to the display panel 1 through the panel connecting portion 6, and thereby is displayed on the display surface 11 A of the display panel. Video display is performed.

  The housing 3 has an opening 3A for inserting and removing the display panel 1. The opening 3A is fixed in the dashboard 8 of the vehicle with the opening 3A facing the vehicle interior, and the display panel 1 is shown in FIG. ) And is housed inside the housing 3 in a lying state with the display surface 11A facing downward. In this state, one end surface of the display panel in a direction intersecting the display surface 11A is exposed from the opening 3A, but the one end surface is an operation unit 1A having operation switches, and the display panel 1 is opened by the operation. The part 3A can be discharged to the outside of the housing 3 or can be drawn into the housing 3 for storage. Such an operation may be performed by the operation unit 2A of the apparatus main body in addition to the operation unit 1A.

  In particular, in the operation unit 1A, the display panel 1 is simply discharged in the lying posture as shown by the imaginary line in FIG. 1B, and the display panel 1 is in the lying down state as shown by the solid line in FIG. The display panel 1 discharged in the lying posture is allowed to be detached from the panel connecting portion 6, and the display panel 1 in the standing posture is displayed on its display surface. The display surface 11A can be visually recognized from the driver's seat or the like, with 11A facing the vehicle interior side (the discharge side of the display panel 1 with respect to the housing 3).

  The position at which the display panel 1 can be detached from the panel connecting portion 6 is not limited to the position where the entire display panel 1 is ejected outside the dashboard as shown in FIG. A position where the distance from the end of the panel 1 to the dashboard 8 becomes a distance HS that allows the display panel 1 to be grasped by hand may be set as a detachable position (see FIG. 1C). For example, the distance HS can be set to 50 mm. When the display panel 1 is detached, the release button is pushed from the state of FIG. 1C to release the lock of the display panel 1 and then removed. Details of this locking mechanism will be described later.

  Further, in the state where the display panel 1 is opened in the standing posture, the display panel 1 is prevented from being detached from the panel connecting portion 6 and the angle (rotation angle) of the display panel 1 is set within an arbitrary angle range with respect to the horizontal plane. Adjustable. This angle is 60 to 105 degrees, for example. The discharge / insertion operation of the display panel 1 in the lying posture is performed by the reciprocating movement of the travel unit 4 in the housing 3, and travels along the insertion direction and the discharge direction of the display panel 1 on both sides in the housing 3. A later-described guide unit for guiding the movement of the unit 4 is provided.

  2 is a perspective view mainly showing the display surface side of the display panel, FIG. 3 is a perspective view showing the back side thereof, and FIG. 4 shows one end surface of the display panel. First, in FIG. 2, the display panel 1 includes a flat image display element 11 such as a liquid crystal or an organic EL that forms a display surface 11A, and an outer frame 12 that forms a window portion 12A. The image display element 11 is attached in a state where the display surface 11A is exposed from the window portion 12A.

  One end operation portion 1A includes a main power switch 13A, an operation switch 13B for opening / closing operation, operation switches 13C and 13D for adjusting an angle when opened, an operation switch 13E for discharging / inserting operation, and a screen display size changeover switch 13F. Is provided. Further, guide grooves 16 are formed along the length direction on both side surfaces orthogonal to the operation portion 1A.

  In FIG. 3, the other end side (the lower end of the display panel 1 in the use state) of the outer frame 12 facing the operation portion 1A is a connecting portion 1B that can be connected to the panel connecting portion as described above. 1B forms a recess-shaped receiving port 17 in which the back surface of the outer frame 12 facing the exposed side of the display surface 11A enters inward from one end edge, and the receiving port 17 is shown in FIG. 3 and FIG. In addition to the input terminal 18 for receiving a visual signal from the outside, a positioning pin insertion hole 19, a lock hole 20, and a lock operation hole 21 are provided toward the operation unit 1A.

  Two pin insertion holes 19 and two lock holes 20 are formed at a predetermined interval in the width direction of the display panel 1, and the pin insertion hole 19 receives a mating guide pin, which will be described later, and receives the input terminal 18. It plays a role of positioning that securely connects the external output terminal. Also, an audio signal can be obtained from the input terminal 18. In this case, a speaker is provided on the display panel 1, or an audio output terminal is provided and a headphone is connected to the audio output terminal to listen to the audio. it can.

  FIG. 5 shows the internal structure of such a display panel. As is apparent from this figure, a lock mechanism 22 is built in the outer frame 12 of the display panel 1 on the coupling portion 1B side. The lock mechanism 22 has a slide plate 23 that forms an inclined lock operation surface 23A corresponding to the lock operation hole 21 in FIG. The slide plate 23 is arranged so as to be slidable in the width direction of the display panel 1 and is urged in one direction (right direction in FIG. 5) on the non-lock side by a coil spring 24 connected to one end thereof.

  FIG. 6 is an enlarged plan view showing the lock mechanism, and FIG. 7 shows a state where the slide plate is removed. As apparent from FIG. 6, the slide plate 23 is provided with a movable long hole 23 </ b> B and a pin 23 </ b> C that protrudes downward (backward direction on the paper surface). On the other hand, as is apparent from FIG. 7, a trigger lever 25 corresponding to the pin 23C of the slide plate is rotatably attached to the lock mechanism 22, and a hook claw 26 made of a leaf spring is provided in the vicinity thereof. A torsion spring 27 is attached to the rotating shaft of the trigger lever 25, whereby the trigger lever 25 is urged clockwise in FIG. 7 when not locked. Then, when the trigger lever 25 is rotated counterclockwise in FIG. 7 against the elasticity of the torsion spring 27 by the sliding force of the pin 23C of the slide plate (when locked), the tip of the trigger lever 25 is the hook claw 26. The hooking claw is constrained by contacting the hook.

  The hooking claw 26 has a locking convex portion 26A formed by bending one end portion thereof, and one end side forming the convex portion 26A is disposed in the lock hole 20 as a free end. Thus, by inserting the portion of the panel connecting portion into the lock hole 20, the projection 26A of the hooking claw is engaged with this portion, and in this state, the trigger lever 25 is brought into contact with the hooking claw 26 so that the hooking claw 26 is moved. When restrained and fixed, the display panel is prevented from being detached from the panel connecting portion, and when the trigger lever 25 is separated from the hooking claw 26 and the hooking claw 26 is released, the hooking claw 26 is allowed to bend and be deformed. 6 can be detached from the display panel.

  Next, the structure of the housing will be described. FIG. 8 is a schematic front view of the housing, and FIGS. 9 and 10 show an XX section and a YY section in FIG. 8, respectively. As is apparent from these drawings, the guide portions 31 (groove-shaped rails) and 32 (L-shaped guide rails) for guiding the movement of the traveling unit 4 are provided on both sides inside the housing 3. In addition, a rack 33 is provided on the inner ceiling surface of the housing 3 so that the traveling unit can reciprocate along the guide portions 31 and 32, and the display panel 1 is guided along the guide portion 32 in the vicinity thereof. A panel guide 34 protrudes, and the guide groove 16 of the display panel shown in FIGS. 2 to 4 is slidably fitted to the panel guide 34. Further, as is apparent from FIG. 10, one end of the guide portion 32 protrudes from the opening 3A of the housing 3, so that even when the panel connecting portion 6 is discharged from the opening 3A, the traveling unit of the traveling unit is maintained at a predetermined discharge amount. The unit base 5 can be supported by the guide portion 32.

  Next, the structure of the traveling unit will be described as an example of a device that can be a connection partner of the display panel according to the present invention. 11 is a plan view showing the front side of the traveling unit, FIG. 12 is a perspective view showing the back side thereof, and FIG. 13 is a perspective view showing the front side of the traveling unit with the panel connecting portion removed. As is clear from FIGS. 11 and 12, the traveling unit 4 includes the unit base 5 and a panel connecting portion 6 attached to the unit base 5.

  Among these, the panel connecting portion 6 includes an output terminal 61 coupled to the input terminal 18 of the display panel 1, a pair of left and right guide pins 62 inserted into the pin insertion hole 19, a pair of left and right latches 63 inserted into the lock hole 20, And the locking tool 64 provided with the lock arm 64A inserted in the lock operation hole 21 is provided. Note that the flexible wiring 7 shown in FIG. 1 is connected to the output terminal 61. Further, a hole 63A is formed in the latch 63, and the hole 63A is engaged with the projection 26A of the hook claw shown in FIG.

  On the other hand, the unit base 5 is formed with guide receivers 51 and 52 and a pair of left and right brackets 53 which engage with the guide portions 31 and 32 of the housing shown in FIG. The panel linking part 6 is rotatably supported by a bracket 53 with a pivot fulcrum shaft 65 projecting on both sides of the panel linking part 6, and the above-mentioned locking tool 64 and other toothless gears described later are provided on the pivot fulcrum shaft 65.

  Further, as shown in FIG. 13, the traveling unit (particularly the unit base 5) includes a traveling mechanism 70 for reciprocating along the guide portions 31 and 32 provided in the housing, and a panel connecting portion. A panel turning mechanism 80 for turning the connected display panels is provided.

  As shown in FIGS. 13 and 14, the travel mechanism 70 includes a travel drive source 71, a worm 72 attached to the drive shaft, a worm wheel 73 meshing with the worm, and a helical gear meshing with a worm portion 73A integrated with the worm wheel. 74, a gear 75 that meshes with the helical gear and an output gear portion 74A, and a pinion 77 that is on both sides of the rotating shaft 76 and meshes with the gear 75. The pinion 77 is shown in FIG. The rack 33 is engaged with the rack 33. Among these, the rotation amount detection gear 78 is engaged with the gear portion 74A, the rotation amount of the gear 78 is detected by the sensor 79, and the stop control of the drive source 71 is performed based on the rotation amount.

  On the other hand, as shown in FIGS. 13 and 15, the panel turning mechanism 80 includes a turning drive source 81, a worm 82 attached to the drive shaft, a worm wheel 83 meshing with the worm, and a gear portion 83A integrated with the worm wheel. A meshing gear 84, a helical gear 85 meshing with the worm portion 84A integral with the gear, a gear 86 meshing with the gear portion 85A integral with the helical gear, a transmission gear 87 meshing with the small diameter gear portion 86A of the gear, and the transmission gear The toothless gear 88 is meshed with the toothless gear 88. The toothless gear 88 is fixed to the panel connecting portion 6 with the rotation fulcrum shaft 65 as a fulcrum, and the other gear trains 82 to 87 are arranged on the unit base 5. .

  Among these, the gear 86 is engaged with a rotation amount detection gear 89, and the rotation amount (that is, the operation amount of the panel turning mechanism) is detected by the sensor S. Then, the drive control of the drive source 81 is performed based on the detection signal of the sensor S, whereby the rotation amount of the panel connecting portion 6 (the rotation amount of the display panel), the release position and lock of the lock 64 described later. The position switching operation is controlled.

  16 is a perspective view of the locking tool, FIG. 17 is a perspective view of the missing gear, and FIG. 18 shows an assembled state of the locking tool and the missing gear. As shown in FIG. 16, in addition to the lock arm 64A, the locking tool 64 has an arcuate gear portion 64C centering on a mounting hole 64B into which the rotation fulcrum shaft 65 is inserted. The lock arm 64A protrudes in the radial direction of the mounting hole 64B, and a protrusion 64D is provided on one side surface of the locking tool 64, and a spring stopper 64E is provided on the opposite side surface.

  On the other hand, as shown in FIG. 17, the toothless gear 88 also forms an arcuate gear portion 88 </ b> B with the mounting hole 88 </ b> A into which the rotation fulcrum shaft 65 is inserted as a center. Further, an arc groove 88D centering on the spring stopper 88C and the mounting hole 88A is formed on one side surface of the toothless gear 88, and the projection 64D of the locking tool is fitted into the arc groove 88D.

  Then, the locking device 64 and the toothless gear 88 are arranged adjacent to each other on the same axis (the rotation fulcrum shaft 65 of the panel connecting portion) as shown in FIG. Of these, the toothless gear 88 is fixed to the side surface of the panel connecting portion 6, and the panel connecting portion 6 is on the rotation fulcrum shaft 65 and one end is locked by the spring stopper 88 </ b> C of the toothless gear SP <b> 1. As a result, it is biased counterclockwise in FIG. 18 (display panel lying down direction). On the other hand, the locking tool 64 is urged in the clockwise direction shown in FIG. 18 opposite to the toothless gear 88 by a torsion spring SP2 provided on the rotation fulcrum shaft 65, and the relative position to the toothless gear 88 is represented by a solid line. To be kept in the locked position. One end of the torsion spring SP2 is locked to the spring stopper 64E of the locking device, and the other end is locked to a hole 88E provided in the toothless gear.

  Here, before the opening operation of the display panel, the gear portion 64C of the locking tool and the transmission gear 87 are engaged with each other in the vicinity of the gear portion 88B of the missing gear, and the drive source 81 (see FIG. 13) is driven in this state. When the transmission gear 87 is rotated in the counterclockwise direction in FIG. 18, the locking tool 64 rotates in the clockwise direction, and immediately thereafter, the projection 64D of the locking tool pressurizes one end of the arc groove 88D of the toothless gear, thereby transmitting the transmission gear. The meshing with 87 is switched from the locking device 64 to the toothless gear 88. At this time, the toothless gear 88 is rotated clockwise by the action of the torsion spring SP2 while the locking tool 64 is kept in the locked position with respect to the panel connecting portion 6. For this reason, the panel connecting portion 6 integrated with the toothless gear 88 also rotates in the same direction, whereby the display panel coupled to the panel connecting portion 6 also rotates in the clockwise direction of FIG. Then, the opening operation is performed.

  On the other hand, when the drive source 81 (see FIG. 13) is driven in the opposite direction to the opening operation of the display panel as described above and the transmission gear 87 is rotated in the clockwise direction in FIG. In the state where is disconnected, power is transmitted from the transmission gear 87 to the locking device 64 having the gear portion 64C meshing with the transmission gear 87. At this time, the panel connecting portion 6 integrated with the toothless gear 88 is kept in an inoperative state by a stopper (not shown), and only the locking device 64 (particularly, its lock arm 64A) is shown in an imaginary line from the locked position represented by the solid line. It is pivoted to the release position represented.

  Note that the lock arm 64A of the locking device 64 is inserted into the lock operation hole 21 of the display panel as described above, and the lock arm 64A is locked to the slide plate shown in FIG. The operation surface 23A is pressed, and the slide plate 23 is slid to the lock side (left direction in FIG. 5) against the elasticity of the coil spring 24. For this reason, it is possible to prevent the display panel 1 from being detached from the panel connecting portion 6 by keeping the hook 26 of the display panel and the latch 63 of the panel connecting portion in an engaged state.

  When the locking tool 64 is in the release position represented by the imaginary line in FIG. 18, the lock arm 64A is separated from the lock operation surface 23A of the slide plate shown in FIG. The display panel 1 is allowed to be detached from the panel connecting portion 6 by returning to the non-locking side (right direction in FIG. 5) by the action of the coil spring 24.

  As apparent from the above description, when the display panel is opened and closed by the rotation of the panel connecting portion 6, the lock 64 is in the locked position to prevent the display panel from being detached, but before the display panel is opened. Although it is possible to switch the locking tool 64 from the lock position to the release position, the switching operation of the locking tool 64 to the release position is limited to be performed when the discharging operation from the housing 3 of the display panel 1 is completed. It is preferable to prevent the risk of the display panel 1 being inadvertently detached when the traveling unit 4 reciprocates.

  Further, if the display panel 1 is not removed from the panel connecting portion 6 even after a predetermined time has elapsed after the discharge operation of the display panel 1 is completed, the locking tool 64 is returned to the lock position and moved into the housing 3 of the display panel 1. In this case, it is preferable that the display panel 1 is removed and the display panel 1 is dropped due to vibrations of the vehicle, and theft is prevented when the display panel 1 is left unattended while leaving the vehicle. is there.

  Here, the display panel 1 according to the present invention is not limited to being driven by being connected to the panel connecting portion 6 as described above, and is mounted and driven on a panel mounting base 90 as illustrated in FIG. You can also The panel mounting base 90 includes a base base 91 connected to the device main body 2 of the in-vehicle electronic device by a signal line 100, and a fixture 92 for fixing the base base to a part in the vehicle interior. In this example, the mounting base 92 is formed by an arm portion 92A that can be attached to the column of the headrest Hr that constitutes the front seat, and a seating portion 92B on which the base base is placed, and the base base 91 placed on the seating portion 92B is formed. It can be fixed with a tightening screw 93.

  On the other hand, as is apparent from FIGS. 19 and 20, the base table 91 has an insertion port 91 </ b> A into which the lower end portion (joining portion) of the display panel 1 is fitted. Then, the display panel 1 fitted in the insertion port 91A is fixed in a standing posture with the display surface 11A exposed as shown in FIG.

  FIG. 22 is a perspective view showing the internal structure of the base table. As is apparent from this figure, in the insertion port 91A, the output terminal 91B and the pin insertion hole 19 coupled to the input terminal 18 of the display panel shown in FIGS. A pair of left and right guide pins 91C to be inserted into the lock hole 20, a pair of left and right latches 91D to be inserted into the lock hole 20, and a pin 91E to be inserted into the lock operation hole 21 are provided. In FIG. 22, 91F is a screw hole for screwing the fastening screw 93 of FIG.

  Note that one end of the signal line 100 is connected to the output terminal 91B. In addition, the pin 91E can be operated by operating a switching lever 91G provided on the surface of the base base 91 to lock and unlock the display panel 1. Not limited to this configuration, it is only necessary that at least the output terminal 91B is provided in the insertion port 91A, whereby a visual signal transmitted from the device body 2 through the signal line 100 is input to the display panel 1 to display an image. It can be carried out.

  Then, according to the panel mounting table 90 as described above, it is possible to appreciate recorded information (for example, a movie recorded on a DVD) and a television broadcast of a disk driven by the device body 2 while being in the rear seat of the vehicle. . To receive a television broadcast, as shown in FIG. 25, a television antenna 101 and a television tuner 102 connected thereto are mounted on a vehicle, the tuner 102 and the device main body 2 are connected via a controller 103, and an output signal ( Visual signal) may be input from the device body 2 to the panel connecting portion 6 or the panel mounting base 90. The controller 103 is also connected to the vehicle battery 104 and a speaker (not shown), but the controller 103, the TV tuner 102, and the like can be built in the device main body 2.

  As described above, the display panel of the present invention, its use example, and corresponding devices have been described. However, such a display panel can be used outside the vehicle as long as there is a device such as the panel connecting portion 6 or the panel mounting base 90 as described above. Can also be used. In addition, the display panel can be a touch panel type display surface.

Explanatory drawing which shows the usage condition of the display panel which concerns on this invention The perspective view which shows the surface side of a display panel The perspective view which shows the back surface side of a display panel Bottom view of display panel The perspective view which shows the internal structure of a display panel Explanatory drawing which shows the locking mechanism built in the display panel Explanatory drawing showing the operating state of the locking mechanism Front schematic view of the enclosure XX sectional view of FIG. YY sectional view of FIG. The top view which shows the state which removed the display panel from the panel connection part. A perspective view showing the back side of the traveling unit The perspective view which shows the front side of the traveling unit which abbreviate | omitted the panel connection part Explanatory drawing showing the travel mechanism Explanatory drawing showing the panel turning mechanism Perspective view of locking device Perspective view of missing gear Locking tool and missing gear set The perspective view which shows the panel mounting base which can utilize the display panel of this invention Perspective view of the base base constituting the panel mounting base Front view showing a state where the display panel is mounted on the base stand Perspective view showing the internal structure of the base The perspective view of the vehicle which shows the usage example of the display panel which concerns on this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display panel 1A Operation part 1B Coupling part 11 Image display element 11A Display surface 12 Outer frame 12A Window part 17 Receiving port 18 Input terminal 19 Pin insertion hole 20 Lock hole 21 Lock operation hole 22 Lock mechanism 23 Slide plate 25 Trigger lever 26 Hanging Claw 61 External output terminal 62 Guide pin 63 Latch 64 Locking device 64A Lock arm 90 Panel mounting base 91B External output terminal

Claims (3)

  In a display panel in which a flat image display element forming a display surface is attached in a state where the display surface is exposed from a window portion of the outer frame, one end surface of the outer frame in a direction intersecting the display surface is provided with operation switches. The other end side opposite to the operation unit is connected to an external output terminal to be a coupling unit having an input terminal for acquiring a visual signal. A lock hole in which a hooking claw is arranged and a pin insertion hole for positioning are formed at a predetermined interval toward the part side, and a trigger lever that restrains the hooking claw and the trigger lever inside the outer frame A display panel comprising a slide plate for holding the latching claw by the sliding plate.   The display panel according to claim 1, wherein the coupling portion is provided with a lock operation hole for operating the slide plate from the outside. The display panel according to claim 1, wherein the coupling portion forms a receiving port having a concave cross section in which a rear surface of the outer frame facing the exposed side of the display surface is inserted inward from one end edge thereof.

Images