Flexible wiring board restraining device and display device using the same

Abstract

To provide a restraining device capable of restraining a flexible wiring board from easily moving just by inserting the flexible wiring board extending from a display panel or the like into an insertion section, and to provide a display device using the same.SOLUTION: When a flexible wiring board 10 is inserted to an insertion section 21, a protruded portion extending from an edge of the flexible wiring board 10 slides up a slope of a rear restraining section while being bent, and restores its flat shape using elastic restoration force when the protruded portion moves past an apex of the slope. The flat protruded portion is trapped between a front restraining section and the rear restraining section within a range of height H inside a restraining region 25 such that the protruded portion is restrained from moving back and forth.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a restricting device for a flexible wiring board capable of restricting movement in a tensile direction when a tensile force or the like acts on the flexible wiring board, and a display device using the restricting device. [Background technology]

[0002] For example, in the assembly process of a display device, it is necessary to insert a flexible wiring board extending from a display panel into a holder and connect a connection part at the front end of the flexible wiring board in the insertion direction to a connector provided inside the holder. If an excessive tensile force is applied to the flexible wiring board during this operation, excessive stress will act on the connection part between the display panel and the flexible wiring board, which may damage the connection part or cause a crack in the display panel. In order to prevent such a phenomenon, it is preferable to provide a restricting device in the holder that restricts excessive movement of the flexible wiring board being inserted.

[0003] Patent Document 1 describes an invention related to a fixing structure for a flexible wiring board. In the fixing structure described in FIG. 1 to FIG. 4 of Patent Document 1, rectangular openings are formed in two places on a board on which a connector is mounted. A pair of locking members protruding in both directions perpendicular to the insertion direction into the connector are formed on the flexible wiring board, and the pair of locking members are positioned in the openings when the connection terminal portion of the flexible wiring board is fitted into the connector. The locking members are inserted into the openings to prevent the flexible wiring board from moving in the horizontal and vertical directions. In the fixing structure described in FIG. 7 to FIG. 10 of Patent Document 1, a T-shaped opening is formed on a board on which a connector is mounted, and this opening has a pair of locking pieces that face each other in the opening. After fitting the connection terminal portion of the flexible wiring board into the connector, the flexible wiring board is inserted into the opening between the pair of locking pieces and positioned in the opening with the pair of locking members protruding in both directions from the flexible wiring board positioned on the surface of the board. This prevents the connection terminal portion from being pulled out of the connector.

[0004] The display device described in Patent Document 2 has a liquid crystal display panel fixed to a housing. An engagement protrusion having a head and a pillar is provided on the outer surface of the housing. An engagement hole and a slit extending from the engagement hole are formed in a flexible wiring board connected to a terminal arrangement section of the liquid crystal display panel. The flexible wiring board is bent along the outer surface of the housing, and the engagement hole is made to pass over the head of the engagement protrusion and engage with the pillar of the engagement protrusion, thereby engaging the flexible wiring board with the engagement protrusion so as not to come off. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4827971 Back [Patent Document 2] Patent No. 5569345 Back Summary of the Invention [Problem to be solved by the invention]

[0006] The fixing structure shown in Figures 1 to 4 of Patent Document 1 requires a complicated operation of bending a pair of locking members integral with the flexible wiring board and inserting them into an opening after fitting the connection terminal of the flexible wiring board to the connector. In the assembly process during fitting the flexible wiring board to the connector, it is ideal to position the flexible wiring board simply by inserting or inserting it in a direction along the board surface, but the fixing structure does not allow such an assembly process. The fixing structure shown in Figures 7 to 10 of Patent Document 1 requires a process of forcibly pushing the flexible wiring board into the opening between the pair of locking pieces while bending it after fitting the connection terminal of the flexible wiring board to the connector, which makes the wiring work of the flexible wiring board even more complicated.

[0007] The display device described in Patent Document 2 requires the flexible wiring board connected to the terminal arrangement section of the liquid crystal display panel to be bent along the outer surface of the housing and the locking hole to pass over the head of the locking protrusion and engage with the pillar section of the locking protrusion, making the wiring work for the flexible wiring board even more complicated.

[0008] The present invention is devised to solve the above-mentioned problems of the conventional art, and aims to provide a flexible wiring board restraining device that can reliably restrain a flexible wiring board from coming loose by simply inserting the flexible wiring board into an insertion portion in a direction along the surface of the board, and a display device using said restraining device. [Means for solving the problem]

[0009] The present invention provides a restricting device for a flexible wiring board having an insertion portion into which at least both side portions of the flexible wiring board are inserted in a direction along a board surface of the flexible wiring board, The flexible wiring board has two edge portions on both sides in a width direction intersecting with an insertion direction into the insertion portion, and protruding pieces protruding outward in the width direction from the two edge portions, The insertion part, a rear regulating portion protruding in a thickness direction of the flexible wiring board, a front regulating portion located forward of the rear regulating portion in the insertion direction, and a regulating region formed between the front regulating portion and the rear regulating portion; an inner regulating portion located inward of the rear regulating portion in the width direction of the flexible wiring board and protruding in a direction opposite to a protruding direction of the rear regulating portion; was established, When the flexible wiring board is inserted into the insertion portion, the protruding piece overcomes the rear restriction portion and is restricted in the front-rear direction within the restriction area. It is characterized by the above.

[0010] In the flexible wiring board restricting device of the present invention, a top of the inner restricting portion is located at a height intermediate between a top and a base of the rear restricting portion, When the flexible wiring board is inserted into the insertion portion, a tip of the protruding piece abuts against the rear restricting portion, and a portion of the flexible wiring board located on the inner side of the tip abuts against the inner restricting portion and is deformed. The projection can be configured to enter into the restriction area by an elastic restoring force generated when the tip portion is released from the rear restriction portion during the insertion process.

[0011] In the flexible wiring board restricting device of the present invention, it is preferable that the rear restricting portion is formed with an inclined portion that is inclined forward in the insertion direction from its base to its top.

[0012] The flexible wiring board regulating device of the present invention is preferably structured so that a strip portion having a shorter dimension in the front-rear direction is formed at the tip of the protruding piece, and the strip portion abuts against the rear regulating portion.

[0013] In the flexible wiring board restricting device of the present invention, a forward protruding piece protruding forward is formed on the strip portion, The insertion portion has a front opening aligned with the front restriction portion, When the protruding piece enters the restriction area, the forward protruding piece may be configured to be located within the front opening.

[0014] Next, the present invention provides a display device having a holder and a display panel fixed to the holder, the display device including any one of the flexible wiring board regulation devices described above, The holder is provided with the insertion portion, the flexible wiring board is inserted into the insertion portion and regulated in a state where the flexible wiring board is curved from the display panel toward the holder. It is characterized by the above. Effect of the Invention

[0015] The flexible wiring board restricting device of the present invention can insert the protrusions formed on both sides of the flexible wiring board into the restricting area in the insertion section simply by inserting the flexible wiring board into the insertion section in a direction along the board surface, without having to perform any special work such as manually bending and locking a part of the flexible wiring board. The protrusions in the restricting area are restricted from moving in the front-rear direction between the rear restricting part and the front restricting part, and the presence of the inner restricting part restricts the protrusions from coming out of the restricting area.

[0016] In the display device of the present invention, when the flexible wiring board extending from the display panel is inserted into the holder, the protruding portion is regulated by the regulating device, so that even if the flexible wiring board is pulled toward the inside of the holder using a jig or tool, excessive stress is not applied to the connection portion between the flexible wiring board and the display panel, which makes it easy to prevent the connection portion from being damaged or part of the display panel from being damaged. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view showing an embodiment of a display device of the present invention from the outside of the display device; [Diagram 2] FIG. 2 is a partial cross-sectional view of the display device shown in FIG. 1 taken along line II-II, showing a restricting device for a flexible wiring board provided in the display device shown in FIG. [Diagram 3] FIG. 2 is a perspective view showing a display panel provided in the display device shown in FIG. 1 from the inner surface side; [Figure 4] FIG. 4 is a partial side view showing a process of bending the flexible wiring board connected to the display panel shown in FIG. [Diagram 5] FIG. 5 is a partial side view showing a process of inserting the flexible wiring board bent in the process of FIG. 4 into an insertion portion constituting a regulating device in a holder; [Figure 6] FIG. 6 is a partial cross-sectional perspective view showing a step of inserting a flexible wiring board into an insertion portion, similar to FIG. 5; [Figure 7] 5 and 6, a process of inserting a flexible wiring board into an insertion part and a process of a protruding piece part of the flexible wiring board entering a regulating area of ​​a regulating device are shown in a front view including a cross section of the display device as viewed from the front. [Figure 8] FIG. 8 is a perspective view showing a process in which the protruding piece portion of the flexible wiring board enters the regulating area of ​​the regulating device, the perspective view being viewed obliquely from a slightly leftward direction of the front view of FIG. 7; [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 7, showing a step in which the protruding piece of the flexible wiring board enters the regulating area of ​​the regulating device; [Figure 10] FIG. 10 is a cross-sectional view similar to FIG. 9 showing a modified example of the flexible wiring board restricting device of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] A display device 1 according to an embodiment of the present invention is shown in the overall perspective view of Fig. 1 and the cross-sectional view of line II-II of Fig. 2. In each of Figs. 1 to 10, the Z1 direction is toward the inside of the device and the Z2 direction is toward the outside of the device. The Z1 direction is the forward direction of the insertion of the flexible wiring board, and the Z2 direction is the rearward direction. The Y1 direction is the upper side of the device, and the Y2 direction is the lower side of the device. The X1 direction is the right side of the device, and the X2 direction is the left side of the device.

[0019] The display device 1 shown in Fig. 1 and Fig. 2 has a main body case 2. The main body case 2 is mainly made of a synthetic resin material, has a rectangular shape when viewed from the outside of the device (Z2 direction), and as shown in Fig. 2, an opening 2a faces the outside of the device (Z2 direction). A holder 3 is fixed to the main body case 2, and a part of the opening 2a of the main body case 2 is covered by the holder 3. A display panel 5 is fixed to the outside (Z2 side) of the holder 3. A support part 3a extending toward the inside of the device (Z1 direction) is integrally formed with the holder 3, and a circuit board 4 is fixed to the support part 3a. Various electronic components are mounted on the circuit board 4, and a connector 6 is further mounted on the surface of the circuit board 4 toward the inside of the device (Z1 direction).

[0020] The display panel 5 is a liquid crystal display panel or an electroluminescence panel. The display panel 5 is configured by stacking two glass substrates, and a flexible wiring board 10 is connected to an inner surface 5a of the display panel 5 facing the inside of the device (Z1 direction). As shown in Fig. 2, a regulating device 20 is provided at the bottom inside the display device 1 to regulate the movement of the flexible wiring board 10 in the inward and outward directions (Z1-Z2 directions). The regulating device 20 is configured as a part of the holder 3, or as a part of the holder 3 and a part of the flexible wiring board 10.

[0021] As shown in FIG. 3, on the inner surface 5a of the display panel 5 facing the inside of the device, a substrate connection portion 5b having a plurality of terminal portions is formed on the surface of the glass substrate. A base connection portion 11 is formed on the base of the flexible wiring substrate 10, and a plurality of terminal portions provided on the base connection portion 11 are soldered and fixed to the terminal portions of the substrate connection portion 5b. A connector connection terminal portion 12 is formed on the tip of the flexible wiring substrate 10. A plurality of wiring layers are provided on the substrate surface of the flexible wiring substrate 10 to electrically connect the base connection portion 11 and the connector connection terminal portion 12. As shown in FIG. 4, in the early stage of the assembly process of the display device 1, the flexible wiring substrate 10 is bent at an angle of approximately 90 degrees from the inner surface 5a of the display panel 5 using a jig, so that the connector connection terminal portion 12 is directed toward the inside of the device (Z1 direction). The display panel 5 is attached to the holder 3 in the orientation shown in FIG. 4 and FIG. 5, and the flexible wiring substrate 10 is inserted into the regulating device 20 in the orientation along the substrate surface. The Z1 direction is the insertion direction in which the flexible wiring board 10 is inserted toward the holder 3.

[0022] As shown in Fig. 3, the flexible wiring board 10 is integrally formed with edge portions 13, 13 located on both sides in the width direction (X1-X2 direction) intersecting with the insertion direction (Z1 direction in Fig. 4), and protruding pieces 14, 14 protruding outward in the width direction (X1-X2 direction) from each edge portion 13. The "both sides" of the flexible wiring board 10 refer to a portion including the edge portion 13 and the protruding piece 14. Each protruding piece 14 has a thick piece portion 14a protruding outward from the edge portion 13 and having a large width dimension W1 in the insertion direction, and a thin piece portion 14b protruding further outward from the thick piece portion 14a and having a width dimension W2 in the insertion direction shorter than the width dimension W1. The shapes of the thick piece portion 14a and the thin piece portion 14b are shown enlarged in Fig. 9.

[0023] 2, 5, and 6 are cross-sectional views showing the structure of a regulating device 20 that regulates and positions the flexible wiring board 10 inserted in the Z1 direction. In the regulating device 20, an insertion portion 21 is formed in the holder 3. The insertion portion 21 is a through hole with a rectangular cross section that penetrates the holder 3 in the device inside-outside direction (Z1-Z2 direction). The holder 3 is formed of a conductive metal material, and the flexible wiring board 10 is inserted into the insertion portion 21 formed in the metal holder 3, making it easier to satisfy EMC (electromagnetic compatibility) requirements. However, the holder 3 is provided with a synthetic resin material layer 3b that covers the metal material at least in the portion that forms the insertion portion 21.

[0024] 2, 5, 6, and 7 onwards show the guide structure of the right side of insertion portion 21, i.e., the portion into which the right side (X1 side) of flexible wiring board 10 is inserted. The structure of insertion portion 21 is symmetrical, and the left side (X2 side) of insertion portion 21 is provided with a guide structure that is symmetrical to the guide structure on the right side.

[0025] 8 and 9, the inside of the insertion portion 21 is provided with a rear regulating portion 22 located on the outside of the device (Z2 direction) and a front regulating portion 23 located on the inside of the device (Z1 direction) as a guide structure for guiding the side of the flexible wiring board 10. As shown in Figs. 7 and 8, in the guide structure, an inner regulating portion 24 is provided on the inside in the width direction of the flexible wiring board 10 from the rear regulating portion 22. The rear regulating portion 22, the front regulating portion 23, and the inner regulating portion 24 are formed of a part of the synthetic resin material layer 3b that covers the metal material constituting the holder 3.

[0026] As shown in Fig. 7 and Fig. 8, the rear regulating portion 22 protrudes in the thickness direction of the flexible wiring board 10 to be inserted, and the inner regulating portion 24 protrudes in the thickness direction of the flexible wiring board 10 in the opposite direction to the rear regulating portion 22. In the insertion portion 21 of the embodiment, the rear regulating portion 22 protrudes upward (Y1 direction), and the inner regulating portion 24 protrudes downward (Y2 direction) inside the rear regulating portion 22. As shown in Fig. 7 and Fig. 8, the downward apex 24a of the inner regulating portion 24 is at a height position intermediate between the apex 22a and the base 22b of the rear regulating portion 22. As shown in Fig. 5, when viewed from either the left or right direction (X1 direction or X2 direction), a portion including the apex 22a of the rear regulating portion 22 and a portion including the apex 24a of the inner regulating portion 24 overlap each other. As shown in FIG. 7, when viewed from the front, the rear regulating portion 22 and the inner regulating portion 24 extend alternately in the up-down direction (Y1-Y2 direction) at positions spaced apart in the left-right direction (X1-X2 direction).

[0027] As shown in FIG. 9, the wall portion of the rear regulating portion 22 facing forward (Z1 direction) is the rear regulating wall portion 22e, and the wall portion of the front regulating portion 23 facing backward (Z2 direction) is the front regulating wall portion 23a. The opposing distance D between the rear regulating wall portion 22e and the front regulating wall portion 23a in the inside-outside direction of the device is slightly wider than the width dimension W2 in the front-rear direction of the strip portion 14b of the protruding portion 14 formed on the flexible wiring board 10. As shown in FIG. 7, a gap of height H is formed between the lower inner wall portion 21a of the insertion portion 21 and the apex 24a of the inner regulating portion 24, and the front regulating wall portion 23a of the front regulating portion 23 is located in front of the gap of height H. In addition, the gap of height H is located below the apex 22a of the rear regulating portion 22. The space of the opposing distance D between the front regulating wall portion 23a and the rear regulating wall portion 22 is the regulating region 25. Alternatively, the space of the opposing distance D and the height H is the restriction area 25. The restriction area 25 means the area between the rear restriction portion 22 and the front restriction portion 23, or the area between the rear restriction portion 22 and the front restriction portion 23 and between the top 24a of the inner restriction portion 24 and the lower inner wall portion 21a of the insertion portion 21.

[0028] As shown in Fig. 8 and Fig. 9, a wall portion of the rear regulating portion 22 facing the outside of the device (Z2 direction) is formed with an inclined portion 22c that inclines forward in the insertion direction from its base portion 22b to its top portion 22a. As shown in Fig. 7 and Fig. 8, a wall portion of the rear regulating portion 22 facing the inside (X2 side) is formed with an inclined portion 22d that inclines in a direction (X1 direction) away from the edge portion 13 of the flexible wiring board 10 from its base portion 22b to its top portion 22a. As shown in Fig. 8, a wall portion of the inner regulating portion 24 facing the outside of the device (Z2 direction) is formed with an inclined portion 24c that inclines forward in the insertion direction (Z1 direction) from its base portion 24b to its top portion 24a.

[0029] Next, an assembly process (assembly method) of the display device 1 and a regulating process (regulating method) of the flexible wiring board 10 in the regulating device 20 will be described. As shown in Fig. 3, the flexible wiring board 10 is flat in a free state, and the base connection part 11 is soldered to the board connection part 5b formed on the inner surface 5a of the display panel 5. In the assembly process of the display device 1, first, as shown in Fig. 4, the flexible wiring board 10 connected to the inner surface 5a of the display panel 5 is bent at approximately 90 degrees from the inner surface 5a of the display panel 5 toward the inside of the device (Z1 direction). A jig is used for this bending operation.

[0030] 5, while inserting the flexible wiring board 10 facing inward (Z1 direction) of the device into the insertion portion 21 constituting the regulating device 20 in the holder 3, the display panel 5 is fitted into the frame portion 3c of the holder 3 facing outward (Z2 direction) of the device, and the display panel 5 is fixed to the holder 3 by means of concave-convex fitting, screw fastening, or the like. In this process, as shown in FIG. 5, the tip of the flexible wiring board 10 facing the Z1 direction is held by a jig, and a tensile force F is applied to the tip, forcibly sending the flexible wiring board 10 inward (Z1 direction) of the device within the insertion portion 21.

[0031] 5 and 6, the main body of the flexible wiring board 10 inserted into the insertion section 21, excluding the left and right protrusions 14, 14, passes between the left and right front regulating sections 23, 23 and is sent into the inside of the device (Z1 direction). While the flexible wiring board 10 is being drawn into the device, the tip of the protrusion 14 protruding outward to the left and right, i.e., the strip portion 14b, hits the inclined portion 22c facing outward (Z2 direction) of the rear regulating section 22 located on both the left and right sides of the insertion section 21, and as the flexible wiring board 10 is drawn into the device (Z1 direction), the strip portion 14b slides along the inclined portion 22c and is guided upward.

[0032] 5 and 6, while the flexible wiring board 10 is being moved further inwardly from the position shown in Fig. 5 and Fig. 6 (Z1 direction), the protrusion 14 is guided downwardly (Y2 direction) by the inclined portion 24c of the inner regulating portion 24 facing outwardly from the device (Z2 direction) and is guided into a gap of height H formed between the lower inner wall portion 21a of the insertion portion 21 and the apex 24a of the inner regulating portion 24. As shown by the dashed line in Fig. 7, the thin piece portion 14b of the protrusion 14 slides up the inclined portion 22c of the rear regulating portion 22, and the thick piece portion 14a, for example, which is on the inner side in the width direction than the thin piece portion 14b, is pressed down from above by the apex 24a of the inner regulating portion 24, so that the protrusion 14 is drawn inwardly from the device (Z1 direction) while bending so that the thin piece portion 14b faces upward. Since strip portion 14b has a short front-to-rear width dimension W2 and is less rigid than other portions, when flexible wiring board 10 is pulled toward the inside of the device (Z1 direction), strip portion 14b can bend as shown by the dashed line in FIG. 7 without generating a large resistance force.

[0033] Furthermore, when the flexible wiring board 10 is pulled in the Z1 direction by the jig, the strip portion 14b of the protrusion 14, which is sliding up the inclined portion 22c of the rear regulating portion 22 and moving toward the inside of the device (Z1 direction), climbs over the top 22a of the rear regulating portion 22 and comes off the top 22a, and the protrusion 14, which is in a bent state as shown by the dashed line in Figure 7, returns to a flat state as shown by the solid line in Figure 7 due to its elastic restoring force. 7 and 8, the wall portion facing the inside (X2 side) of the rear regulating portion 22 is formed with an inclined portion 22d that inclines in a direction (X1 direction) away from the edge portion 13 of the flexible wiring board 10 from the base portion 22b to the top portion 22a, and as shown in Fig. 8 and 9, the inclined portion 22c facing the outside of the device (Z2 direction) of the rear regulating portion 22 has a width dimension in the left-right direction (X1-X2 direction) that gradually narrows from the base portion 22b toward the top portion 22a. Therefore, the strip portion 14b sliding up the inclined portion 22c of the rear regulating portion 22 is likely to come off the top portion 22a when it reaches the vicinity of the top portion 22a of the rear regulating portion 22.

[0034] As shown in Fig. 8 and Fig. 9, the protrusion 14 restored to the flat plate state enters a restriction area 25 between the rear restriction wall 22e and the front restriction wall 23a (opposing distance D) and between the top 24a of the inner restriction part 24 and the lower inner wall part 21a (height H). The protrusion 14 that has entered the restriction area 25 has its front edge 14c restricted by the front restriction wall 23a of the front restriction part 23 so as not to move inward (Z1 direction) of the device, and its rear edge 14d restricted by the rear restriction wall 22e of the rear restriction part 22 so as not to return outward (Z2 direction) of the device. Furthermore, the downward top 24a of the inner restriction part 24 is at a height position intermediate between the top 22a and the base 22b of the rear restriction part 22, and as shown in Fig. 5, the rear restriction wall 22e is at a position overlapping the inner restriction part 24 in the left-right direction (X1-X2 direction). Therefore, the upward movement of the protrusion 14 is restricted, and the protrusion 14 is prevented from easily slipping out of the restriction area 25.

[0035] 5, in the process of assembling the display panel 5 to the holder 3, the flexible wiring board 10 is inserted into the insertion portion 21 constituting the regulating device 20 toward the inside of the device, and a tensile force F is simply applied to the flexible wiring board 10 from inside the holder 3, so that the left and right protrusions 14 overcome the rear regulating portion 22 and automatically fit into the regulating area 25. Therefore, the flexible wiring board 10 can be regulated and positioned without excessive movement back and forth (Z1-Z2 directions) within the holder 3, without going through a complicated assembly process such as bending a part of the flexible wiring board 10 by hand and inserting it into a slit, or bending the flexible wiring board 10 by hand while inserting it into a notch or hole.

[0036] In the process of assembling the display panel 5 to the holder 3, the protruding portion 14 of the flexible wiring board 10 inserted into the insertion portion 21 is fitted into the restriction area 25 inside the insertion portion 21, and then the flexible wiring board 10 is slightly bent to fix the display panel 5 in the frame portion 3c of the holder 3 facing the outside of the device (Z2 direction). In the partially assembled state in which the display panel 5 is fixed to the holder 3, a distance is maintained between the protruding portion 14 restricted in the restriction area 25 and the connection portion between the inner surface 5a of the display panel 5 and the base connection portion 11. Therefore, even if the tip of the flexible wiring board 10 protruding from the holder 3 toward the inside of the device (Z1 direction) is pulled in the Z1 direction or pushed in the Z2 direction, it is possible to prevent an excessive force from acting on the connection portion between the inner surface 5a of the display panel 5 and the base connection portion 11.

[0037] 2 is fixed to the support portion 3a extending inward (in the Z1 direction) from the holder 3 in a process before or after the display panel 5 is attached to the holder 3. The connector connection terminal portion 12 at the tip of the flexible wiring board 10 is connected to the connector 6 mounted on the circuit board 4. At this time, even if a pulling force in the Z1 direction or a pushing force in the Z2 direction is applied to the flexible wiring board 10, no excessive force is applied to the connection portion between the inner surface 5a of the display panel 5 and the base connection portion 11.

[0038] As shown in FIG. 2, in the assembly process of the display device 1, the holder 3 integrated with the display panel 5 is fixed to the opening 2a of the main body case 2. The fixing means may be a recess-projection fitting or a screw fastening.

[0039] FIG. 10 shows a modified example of the regulating device 20 of the present invention. In the regulating device 20 of this modified example, a front opening 26 adjacent to the front regulating portion 23 is provided in the insertion portion 21 formed in the holder 3. The front opening 26 opens outward away from the edge portion 13 of the flexible wiring board 10 from the front regulating portion 23. The protruding portion 14 of the flexible wiring board 10 is formed with a front protruding piece 14e protruding forward in the insertion direction (Z1 direction) from the strip portion 14b. When the protruding portion 14 enters the regulating area 25 of the insertion portion 21, the front protruding piece 14e enters the inside of the front opening 26. By the front protruding piece 14e entering the inside of the front opening 26, it becomes more difficult for the protruding portion 14 to come out of the regulating area 25, and it becomes easier to stabilize the protruding portion 14 in a position where it is fitted inside the regulating area 25.

[0040] The insertion portion 21 of the regulating device 20 in the above embodiment is formed as a rectangular hole penetrating the holder 3 in the inward and outward directions, but the insertion portion 21 may have a structure in which, for example, the central portion in the left-right direction is open upward (Y1 direction) as long as the rear regulating portion 22, the front regulating portion 23, the inner regulating portion 24, and the regulating area 25 are formed on both the left and right sides. Also, the insertion portion 21 may have a structure in which the rear regulating portion 22 protrudes downward (Y2 direction) and the inner regulating portion 24 protrudes upward (Y1 direction) in a manner upside down from the structure in Fig. 7 . [Explanation of symbols]

[0041] 1 Display device 2 Main unit case 3 Holder 4 Circuit Board 5 Display Panel 6 Connectors 10 Flexible wiring board 13 Edge 14 Protrusion 14a Thick piece part 14b Strip part 14e Front protruding piece 20 Regulatory Device 21 Insertion section 22 Rear restriction section 22a Top 22b base 22c Slope 22d slope part 23 Forward Traffic Control Section 24 Inner regulation part 24a Top 24b base 24c Slope 25 Regulatory Area 26 Front opening

Claims

1. A restricting device for a flexible wiring board having an insertion portion into which at least both side portions of the flexible wiring board are inserted in a direction along a substrate surface of the flexible wiring board, The flexible wiring board has two edge portions on both sides in a width direction intersecting with an insertion direction into the insertion portion, and protruding pieces protruding outward in the width direction from the two edge portions, The insertion part, a rear regulating portion protruding in a thickness direction of the flexible wiring board, a front regulating portion located forward of the rear regulating portion in the insertion direction, and a regulating region formed between the front regulating portion and the rear regulating portion; an inner regulating portion located inward of the rear regulating portion in the width direction of the flexible wiring board and protruding in a direction opposite to a protruding direction of the rear regulating portion; was established, When the flexible wiring board is inserted into the insertion portion, the protruding piece overcomes the rear restriction portion and is restricted in the front-rear direction within the restriction area. A flexible wiring board regulation device comprising:

2. a top of the inner regulating portion is located at a height intermediate between the top and the base of the rear regulating portion, When the flexible wiring board is inserted into the insertion portion, a tip of the protruding piece abuts against the rear restricting portion, and a portion of the flexible wiring board located on the inner side of the tip abuts against the inner restricting portion and is deformed.

2. The flexible wiring board restricting device according to claim 1, wherein the protruding piece enters the restricting area by an elastic restoring force generated when the front portion is released from the rear restricting portion during the insertion process.

3. 3. The flexible wiring board restricting device according to claim 2, wherein the rear restricting portion is formed with an inclined portion that is inclined forward in the insertion direction from its base to its top.

4. 3. The flexible wiring board restricting device according to claim 2, wherein a strip portion having a shorter dimension in the front-rear direction is formed at the tip of said protruding piece, said strip portion contacting said rear restricting portion.

5. A forward protruding piece is formed on the strip portion, the forward protruding piece being The insertion portion has a front opening aligned with the front restriction portion, 5. The flexible wiring board restricting device according to claim 4, wherein the forward protruding piece is located within the front opening when the protruding piece enters the restricting area.

6. A display device including a holder and a display panel fixed to the holder, the display device including the restricting device for a flexible wiring board according to any one of claims 1 to 5, The holder is provided with the insertion portion, the flexible wiring board is inserted into the insertion portion and regulated in a state where the flexible wiring board is curved from the display panel toward the holder. A display device comprising:

Images