JP5082638B2 - Liquid crystal display - Google Patents

Description

  The present invention relates to a liquid crystal display device, and in particular, a liquid crystal display having a configuration in which a liquid crystal panel is sandwiched between a rectangular frame-shaped bezel and a frame frame, and the bezel and the frame frame are joined at corners at four corners. Relates to the device.

  With respect to this type of liquid crystal display device, a screwing mechanism is often adopted as a fixing mechanism for coupling the bezel and the frame frame. In addition, the bezel and the frame frame formed in a substantially rectangular shape are often screwed at the corners of the four corners (see, for example, Patent Document 1, Document 2, and Document 3).

  This point will be described next with reference to FIG. 5 showing the configuration described in Patent Document 1.

  FIG. 5 is an exploded perspective view showing a basic configuration of a liquid crystal module (liquid crystal display device) used in a television receiver. The liquid crystal module includes a liquid crystal panel 1, a rectangular frame bezel 2 fitted to the outer periphery of the liquid crystal panel 1, a frame frame 3 that holds the liquid crystal panel 1 between the bezel 2, and the frame frame A linear light source 4 for backlight arranged in a space surrounded by 3, a reflective sheet 5 that reflects light from the linear light source 4 toward the liquid crystal panel 1, and a reflective sheet 3 between the frame 3. And a back plate 6 that sandwiches the light, a light diffusing sheet 71 and a panel 72, a cushion spacer 73, relay boards 81 and 82, and the like. The bezel 2 is provided with protruding pieces 21 protruding outward at the corners of the four corners, and these protruding pieces 21 are overlapped with the bowl-shaped protruding pieces 31 provided at the four corners of the frame frame 3. Those overlapping portions are screwed by using a locking screw 91.

6 is a plan view of the liquid crystal module described with reference to FIG. 5, and FIG. 7 is a perspective view of a main part of FIG. As shown in FIG. 6 or FIG. 7, in this liquid crystal module, the saddle-shaped protrusions 31 of the frame frame 3 overlap the protrusions 21 provided at the corners of the four corners at the corners of the four corners, These overlapping portions are joined together using one stop screw 91. Therefore, in the liquid crystal display device proposed by Patent Document 1 or the like, the fixing mechanism is constituted by a screw fixing mechanism using four fixing screws 91.
JP 2006-350218 A JP-A-6-222335 JP 2006-39159 A

  However, when a screw-fixing mechanism using four locking screws 91 is used as the fixing mechanism as in the liquid crystal module described with reference to FIGS. 5 and 6, the number of times that the locking screw 91 is screwed and tightened in the assembly process is minimum. However, it is necessary four times, and it takes a long time to fasten the set screw 91, which is a factor that hinders productivity or mass productivity.

  The present invention has been made in view of the above problems, and when a rectangular frame bezel sandwiching a liquid crystal panel and a frame frame are coupled at the corners of the four corners by a fixing mechanism, the fixing mechanism is used. The required number of set screws can be reduced from 4 to 2 required for the liquid crystal module described in Patent Document 1, and the number of times of set screws is reduced in the assembly process. Accordingly, an object of the present invention is to provide a liquid crystal display device in which the bezel and the frame frame are firmly and securely coupled while improving productivity or mass productivity.

The liquid crystal display device according to the present invention includes a liquid crystal panel, a rectangular frame-shaped bezel fitted to the outer periphery of the liquid crystal panel, and projecting pieces that are provided at the corners of the four corners of the bezel and project outward. When the frame member for sandwiching the liquid crystal panel between said bezel 4 and the corner of the corner portion of the flange-shaped protrusion provided on each of the frame member, between the projecting pieces and the flange-shaped protrusion In the liquid crystal display device including a fixing mechanism that joins the overlapping portions, the overlapping portions are arranged in two first overlapping portions arranged in a diagonal direction of the bezel and in the other diagonal direction of the bezel. Row have been classified into the second overlapping portion of the two positions, in the first overlapping portion, whereas the said projecting piece and the flange-shaped protrusion is screwed, in the second overlapping portion The protrusion provided on the hook-shaped protrusion Serial fitted into hole portions formed on the protruding piece by positioning the bezel, and the engaging hole engaging pawl provided in the projecting state on a side surface of the frame the frame is formed in the bezel engaging and tanning retaining the bezel with respect to the frame the frame, is that.

In the present invention, the projecting piece on the bezel above the bezel is a sheet metal is formed bent, so the above Tsubagata突 piece adopts a construction in, it is integrally formed of plastic in the frame Frame Is possible.

  According to the liquid crystal display device according to the present invention configured as described above, the number of set screws used in the fixing mechanism that joins the corner portions of the four corners of the bezel and the frame frame protrudes at the first overlapping portion. There are only two pieces used for joining the piece and the hook-shaped protruding piece, and in the second overlapping portion, the bezel is formed by the fitting structure between the protrusion and the hole and the engaging structure between the engagement claw and the engagement hole. Since the frame and the frame are coupled, it is not necessary to use a stop screw at the second overlapping portion. For this reason, the required number of set screws and the number of times the set screws are tightened in the assembly process are reduced, thereby improving productivity or mass productivity. Nevertheless, in the second overlapping portion, the engagement structure between the protrusion and the hole and the engagement structure between the engagement claw and the engagement hole are adopted, and the engagement structure and the engagement structure are used to stop the engagement. As a result, it is possible to secure the same bonding strength as the screw-fixing structure using screws. Therefore, the bezel and the frame frame are firmly and reliably coupled by the action of the entire fixing mechanism.

  As described above, according to the present invention, when the rectangular frame-shaped bezel sandwiching the liquid crystal panel and the frame frame are coupled to each other at the four corners by the fixing mechanism, the fixing screw necessary for the fixing mechanism is used. Is reduced from four required for the liquid crystal module described in Patent Document 1 to two. Therefore, it is possible to improve the productivity or the mass productivity by reducing the required number of fastening screws and the number of tightening times in the assembly process of the liquid crystal display device, which helps to reduce the component cost and the manufacturing cost.

  Nevertheless, in the second overlapping location, which is the location where the fixing screw is reduced in the fixing mechanism, the screw structure is inferior to the case of screw fixing due to the fitting structure between the projection and the hole and the engagement structure between the engaging claw and the engaging hole. Since the low bonding strength is ensured, the overall bonding strength between the bezel and the frame is ensured to be equal to that of the liquid crystal module disclosed in Patent Document 1.

  1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention, FIG. 2 is a schematic plan view of the liquid crystal display device, FIG. 3 is an exploded perspective view of the main part of FIG. 2, and FIG. It is a perspective view about the principal part.

  As shown in FIG. 1, this liquid crystal display device is for a television receiver, and a liquid crystal panel 1, a sheet metal bezel 2 fitted to the outer periphery of the liquid crystal panel 1, and a liquid crystal between the bezel 2. A frame frame 3 made of a resin molded body that sandwiches the panel 1, a linear light source 4 for backlight disposed in a space surrounded by the frame frame 3, and light from the linear light source 4 to the liquid crystal panel 1 In addition to the reflection sheet 5 that reflects toward the frame frame 3 and the back plate 6 that sandwiches the reflection sheet 3 between the frame 3, the light diffusion sheet 71 and panel 72, cushion spacer 73, relay substrate 81, 82 and the like. Further, in the illustrated liquid crystal display device, the bezel 2 is divided into first and second members 25 and 26.

  As shown in FIG. 2, the first member 25 and the second member 26 are configured in a substantially symmetrical L shape by dividing the rectangular frame bezel 2 into two corners located in the diagonal direction. ing. Therefore, when these members 25 and 26 are punched from the sheet metal workpiece, the material loss is minimized by adopting a pattern in which the corners of the second member are punched together with the corners of the first member 25. There is an advantage that you can.

  When assembling the first member 25 and the second member 26 into the rectangular frame-shaped bezel 2, the protruding piece provided on one side of the first member 25 and the protruding side provided on one side of the second member 26. The pieces are overlapped with each other, and the overlapping portion a (see FIG. 2) is screwed. Similarly, the protruding piece provided on the other split end of the first member 25 and the protruding piece provided on the other side of the second member 26 are overlapped with each other, and the overlapping portion b (see FIG. 2) is screwed. (This point will be described later).

  As can be seen from FIG. 2, in this embodiment, the rectangular frame-shaped bezel 2 formed by combining the first member 25 and the second member 26 is outward at each of the four corners. The protruding pieces 27 and 28 that protrude are bent. In the example shown in the figure, two protruding pieces 27 aligned in one diagonal direction of the bezel 2 out of the protruding pieces 27 and 28 at the corners of the four corners overlap each other at the overlapping points a and b described above. It is formed by two protruding pieces. Further, the two protruding pieces 28 arranged in the other diagonal direction are bent at the corners of the first member 25 and the second member 26.

  On the other hand, on the frame frame 3 which is a mating member to which the bezel 2 is coupled, hook-shaped projecting pieces 31 projecting outward are formed integrally with resin at each of the four corner portions. Then, when the bezel 2 and the frame frame 3 are put together, the overlapping portions of the protruding pieces 27 and 28 and the hook-shaped protruding pieces 31 that are overlapped with each other are two first overlapping portions that are aligned in the diagonal direction of the bezel 2. X1 and two second overlapping portions X2 arranged in the other diagonal direction of the bezel 2 are distinguished, and the first and second overlapping portions X1 and X2 are coupled by a fixing mechanism. ing.

  In this embodiment, the structure which couple | bonds the bezel 2 and the frame frame 3 differs in the 1st overlap location X1 and the 2nd overlap location X2.

  Among these, at the first overlapping portion X1, the stopping screw 91 used for screwing the overlapping portion a of the protruding pieces of the first member 25 and the second member 26 is a hook-shaped protrusion. It is also used for screwing to the piece 31.

  On the other hand, a coupling structure that does not use a stop screw is employed for the second overlapping portion X2. That is, as shown in FIG. 3, on the frame frame 3 side, a circular boss-shaped protrusion 32 is integrally formed upward on the hook-shaped protrusion 31, and the engaging claw is formed laterally on the side surface of the frame frame 3. 33 is integrally formed. On the side of the bezel 2, a circular hole 22 is formed in the protruding piece 28, and an engagement hole 23 is formed on the side surface of the bezel 2. Then, as shown in FIG. 4, the protrusion 32 fits into the hole 22 of the protruding piece 28 to position the bezel 2 with respect to the frame frame 3, and the engaging claw 33 engages with the engaging hole of the bezel 2. The bezel 2 is secured to the frame frame 3 by being engaged with the frame 23.

  According to the liquid crystal display device of this embodiment, as shown in FIG. 2, the required number of retaining screws 91 used in the fixing mechanism for coupling the corners at the four corners of the bezel 2 and the frame 3 is the first. There are only two pieces used for joining the protruding piece 27 and the hook-shaped protruding piece 31 at the overlapping portion X1. In the second overlapping portion X2, the bezel 2 and the frame frame 3 are coupled by the fitting structure of the protrusion 32 and the hole portion 22 and the engaging structure of the engagement claw 33 and the engagement hole 23, It is no longer necessary to use a stop screw for the two overlapping portions X2. Therefore, the required number of retaining screws 91 and the number of tightening of retaining screws in the assembly process are reduced to half that of the liquid crystal module disclosed in Patent Document 1 described with reference to FIGS. Will be greatly improved. Further, in the second overlapping portion X2, the fitting structure between the protrusion 32 and the hole portion 22 and the engaging structure between the engagement claw 33 and the engagement hole 23 are comparable to the case where a stop screw is used. Bond strength is ensured. Therefore, the bezel 2 and the frame frame 3 are firmly and securely coupled by the action of the entire fixing mechanism.

  1 to 7, the same or corresponding parts are denoted by the same reference numerals.

1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention. It is a schematic plan view of the liquid crystal display device. It is a disassembled perspective view about the principal part of FIG. It is a perspective view about the principal part of FIG. It is a disassembled perspective view of the liquid crystal module shown by patent document 1. FIG. FIG. 6 is a plan view of the liquid crystal module of FIG. 5. It is a perspective view about the principal part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 2 Bezel 3 Frame frame 22 Hole part 23 Engagement hole 27,28 Protruding piece 31 Saddle-shaped projecting piece 32 Protrusion 33 Engaging claw 91 Stop screw X1 1st overlap location X2 2nd overlap location

Claims (2)

Between the liquid crystal panel, a rectangular frame-shaped bezel fitted to the outer periphery of the liquid crystal panel, projecting pieces provided at the corners of the four corners of the bezel and protruding outward, and the bezel a frame member for sandwiching the liquid crystal panel, a flange-shaped protrusion provided on each of the four corners of the corner portions of the frame member, the fixing mechanism that couples the overlapping portion between the protruding piece and the flange-shaped protrusion In a liquid crystal display device comprising:
The overlapping portion is distinguished into two first overlapping places arranged in the diagonal direction of the bezel and two second overlapping places arranged in the other diagonal direction of the bezel, in the first overlapping portion, whereas the protruding piece and the said flange-shaped protrusion is screwed, in the second overlapping portion, projection provided on the flange-shaped protrusion is formed on the projecting piece is fitted into the hole portion by positioning the bezel are, and the side engaging claw which is provided with protruding state of the frame the frame is engaged with the engagement hole formed in the bezel a liquid crystal display device characterized in that it tanning retaining the bezel to the frame the frame. It said bezel the protruding piece is formed bent within the bezel which is made of sheet metal, the liquid crystal display device according to claim 1, wherein said Tsubagata突 piece are integrally formed of plastic in the frame the frame.

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