JP2010072207A - Front panel of display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front panel of a display device that is manufactured at low cost by facilitating manufacture by splitting assembly. <P>SOLUTION: The front panel is fitted to a top-side circumferential edge of a chassis forming a base of a liquid crystal display device to form a frame. The front panel comprises a first frame member forming a part of the frame and fitted engaging a top side of the chassis, two second frame members engaging the top side of the chassis as well while abutting against the first frame member to be joined to both ends of the first frame member, and a third frame member joined to ends of the second frame members through engagement portions. The front panel can be disassembled after being assembled, and also can be completely integrated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a front panel of a display device such as a liquid crystal or plasma used in a television, a personal computer, a measuring device or the like. More particularly, the present invention relates to a front panel of a display device used in a large-sized television set that is easy to manufacture and assemble.

  Recent televisions are mainly flat-screen televisions, especially those that use liquid crystal panels. This recent flat-screen television is popular because it has the advantages of clear images, thin thickness and easy handling. In particular, the small size is easy to carry. In recent years, large-sized ones have also become popular due to the advantage that they can be hung on the wall. The display device of a liquid crystal television provided with a liquid crystal panel has a large panel as the screen becomes large.

  The front panel, which is a rectangular frame among these panels, is provided on the outer periphery of the display device and also has a decorative panel, which greatly affects the design. Generally, this front panel is manufactured by a molding die integrally by injection molding. Therefore, the present situation is that when the panel is large, the injection mold is also large. For example, a front panel is known that is attached to the front surface of a thin display panel structure so that the display unit is sandwiched between the back cover unit (see, for example, Patent Document 1).

  Further, a configuration in which screws are fastened to the front panel and the chassis via a back panel is also known (see, for example, Patent Document 2). The front panel shown in these documents is an integrated frame structure. Although it is similar to this frame and not the front panel itself, the gasket can be attached to and detached from the filter glass with a single touch in response to the increase in the size of the display device. A structure that is attached to a panel in a divided form is known (for example, see Patent Document 3).

The gasket frame shown in Patent Document 3 is configured to be sandwiched by elastic deformation in a filter glass. In other words, this is an example in which a part of the structure is divided and assembled with one touch as the display device is enlarged. Also, although it is not a front panel, it is the same in that the members obtained by dividing the structure of the large display device are integrated by joining, but the chassis frame to which the front panel is attached is divided from the beginning without the integrated structure. There is also known a structure in which the divided frame chassis members are integrated by joining at corner portions to form a chassis frame (see, for example, Patent Document 4).
JP 2006-337596 A JP 2008-46435 A JP 2006-53241 A WO2007 / 034786A1

  As described above, in the case of a large display device, the front panel associated therewith is also increased in size. The front panel is manufactured from a light alloy such as an aluminum alloy or a synthetic resin, and many of the manufactured products using the synthetic resin are injection molded products using an injection mold. For this reason, in the case of a large display device, both the injection mold for injection molding and the injection molding machine become large. This means that the production equipment becomes larger and the required floor area is increased, so that the equipment cost is also increased, and the cost of the product is finally increased. In addition, the method of dividing the panel has a problem in the processing of the joint portion of the divided member. In particular, the front panel is a member positioned on the front side of the display device, and the divided and assembled structure is required to be designed. It is not easy to make a product of the same quality as an integrated product.

  However, the method of dividing and assembling the panels is advantageous in terms of cost because it can be manufactured at a low cost without using a large mold. The present invention has been made to solve the above-described conventional problems, and achieves the following object. An object of the present invention is to provide a front panel of a display device that can be easily manufactured by split assembly and can be manufactured at low cost.

The present invention takes the following means in order to achieve the object.
The front panel of the display device of the present invention 1
A front panel that is attached to the front peripheral edge of the front surface of the chassis (2) that forms the base of the display device and constitutes a rectangular frame,
A first frame member (4) that forms one side of the frame and is engaged with and attached to the front side of the chassis (2);
Engaging with the front side of the chassis (2), forming the other two sides of the frame body, two first ends joined at both ends of the first frame member (4) via engaging portions. Two frame members (5);
A third frame that faces the first frame member (4), forms the remaining side of the frame, and has an end joined to the other end of the second frame member (5) via an engaging portion. It consists of a member (6).

The front panel of the display device according to the second aspect of the present invention is the first aspect of the present invention.
Due to the engagement of the chassis (2) with the first frame member (4) and the second frame member (5), the chassis (2), the first frame member (4) and the first frame member The two-frame member (5) is characterized by having guide portions (7, 8) for relatively sliding movement.
The front panel of the display device of the third aspect of the present invention is the first or second aspect of the present invention.
The engaging portion is configured such that an elastic deformation portion (9) formed integrally with the second frame member (5) or the third frame member (6) is engaged with or detached from the chassis (2). It is characterized by that.

The front panel of the display device of the fourth aspect of the present invention is the first or second aspect of the present invention.
The engaging portion engages between the other end portion of the second frame member (5) and the end portion of the third frame member (6), and is detachably coupled. It is a connecting member (21, 31, 40).
The front panel of the display device according to the fifth aspect of the present invention is the first or second aspect of the present invention.
The material of the first frame member (4), the second frame member (5), and the third frame member (6) is an aluminum alloy.

A front panel of a display device according to a sixth aspect of the present invention is the first or second frame member (4), the second frame member (5), or the third frame member (6) according to the first or second aspect of the present invention. It has the structure which has the slope of a degree and is mutually joined.
According to the fourth aspect of the present invention, the front panel of the display device according to the fourth aspect of the present invention includes the second frame member (20, 30), the third frame member (20, 30), and the connecting member (21, 31). The connection of is characterized by being screwed.

The front panel of the display device of the present invention 8 is the resin (42) injected by injection joining through the connecting member (40) engaged across the both end portions in the first or second aspect of the present invention. It is characterized by being integrally coupled with each other.
The front panel of the display device according to the ninth aspect of the present invention is the front panel according to the eighth aspect of the present invention, wherein the injection joining includes the first frame member, the second frame member, the joint surfaces of the both ends of the third frame member, and the coupling member The bonding surface is subjected to a surface treatment having a fine uneven surface by chemical etching, and a high hardness crystalline thermoplastic resin composition is injected to each other bonding surface.

  The present invention is configured as described above, and the front panel is constructed by assembling manufactured as individual frame members. The frame member has a simple configuration and can be easily assembled or disassembled. Depending on the configuration, the front panel can be completely integrated. Therefore, even in the case of a large display device, the front panel does not need to be integrated from the initial stage of manufacture along this shape, and is integrated at the stage of assembling individually manufactured frame members. do it. As a result, it becomes possible to manufacture at a low cost, and it is possible to perform design processing such as cosmetic processing without limitation on individual frame members. It can be easily attached to and removed from the chassis by the frame member alone.

  Embodiments of a front panel 1 of a display device according to the present invention will be described below with reference to the drawings. FIG. 1 is an overall front view of a front panel of a liquid crystal display device. FIG. 2 is a partial cross-sectional view of the liquid crystal display device shown in FIG. The liquid crystal display device basically has a configuration in which the display panel 3 is fixedly supported on the front surface of the chassis 2, but the front panel 1 is disposed on the peripheral edge of the display panel. In addition to the illustration, liquid crystal display components such as an optical sheet and a backlight are attached to the chassis 2 via a support member. Further, the display panel 3 for screen display faces the front side of the liquid crystal display device, and as described above, the front panel 1 is provided at the periphery of the display panel 3 by being fixed to the chassis 2 that forms the base of the liquid crystal display device. ing.

  In recent years, thin display devices such as televisions, particularly liquid crystal devices, have become mainstream. This thin liquid crystal television or the like is thin and easy to carry and is light in weight, so it can be attached to the wall of the room. For this reason, a structure that is simpler and easier to maintain is required. Next, as an embodiment of the present invention, a front panel 1 having a structure that can be easily attached to a chassis and can be manufactured at low cost will be described.

  The configuration of the liquid crystal display device itself is described in, for example, Patent Document 4 described above, and detailed description thereof is omitted, but the outline is as follows. The backlight provided on the back side of the chassis is composed of a fluorescent tube or the like and emits light from the back of the liquid crystal display device toward the display panel. This backlight is fixed to the chassis. An optical sheet or the like for uniformly diffusing or polarizing light from the backlight is provided on the front side of the backlight.

  This optical sheet is composed of a diffusion sheet, a prism sheet, a polarizing sheet, and the like. This optical sheet is also fixed to the chassis. The display panel functions by receiving light from the optical sheet. As is well known, the display panel displays images and character information via a liquid crystal. The front panel 1 according to the present invention has a frame structure provided at the peripheral edge of the display panel 3. The central part of the frame serves as a window for the display panel and constitutes a space. Since the front panel 1 is located in front of a liquid crystal television or the like, design is required. 3 is a cross-sectional view taken along the line AA in FIG.

  The front panel 1 includes four frame members, that is, a first frame member 4 that is an upper frame, two second frame members 5 that constitute a side frame, and a third frame member that is a lower frame, as shown in FIG. It is comprised from 6. The respective ends are combined to form a frame. Each frame member of the frame is made of an aluminum alloy such as a drawn material, an extruded material, or a die-cast material. However, the frame member is not limited to the aluminum alloy, and may be another light alloy or a synthetic resin. The chassis 2 is formed with an engaging portion for attaching the frame.

  The structure shown in FIGS. 1 to 3 is obtained by mechanically connecting the front panel 1 and the chassis 2 together. The front portion of the chassis 2 is formed with a male portion 7 that is a convex portion of a dovetail groove (the pigeon tail), and the male portion 8 that is a concave portion of a dovetail groove is formed on the front panel 1 side. The male part 8 of the dovetail by the side of the front panel 1 is inserted in the male part 7 of the dovetail, and both are fixed. The male portions 7 are disposed on the upper side and both sides of the chassis 2 and are integrally formed for the first frame member 4 and the second frame member 5, respectively.

  With respect to the chassis 2, a female portion 8 having a dovetail groove is formed on one of the first frame member 4 and the second frame member 5 along the longitudinal axis. When the male part 7 is inserted into the female part 8, the dovetail groove is guided by a configuration that is regulated by the inclined surfaces on both sides and that is not separated from each other. The guide portion is not limited to the dovetail type, and the cross-sectional shape formed for fixing the workpiece on the bed of a machine tool or the like may be a T-slot type. Further, in the relationship between the chassis 2 and the first frame member 4 and the second frame member 5, the male portion 7 and the female portion 8 may be reversed.

  Next, a method for attaching the frame member to the assembly chassis 2 will be described. As shown in FIG. 1, first, the male portion 8 of the first frame member 4 constituting a part of the frame is inserted into the male portion 7 of the dovetail groove provided on one side (upper side) of the chassis 2, and a predetermined position is obtained. Position to. Next, the female part 8 of the first frame member 4 and the second frame member 5 are inserted into the male part 7 of the dovetail groove on the side constituting the other side (both sides) of the chassis 2. The male portion 7 for the second frame member 5 is formed in a perpendicular direction from the end portions on both sides across the male portion 7 for the first frame member 4. Two second frame members 5 are respectively inserted into this, and the end portions are abutted against the end portions of the first frame member 4 and positioned. In addition, each edge part of each frame member is a 45-degree inclined surface from the axial direction of the member.

  Therefore, when each frame member is abutted and joined at the end, the frame members are accurately brought into contact with each other so that each corner of the frame is 90 degrees. In this way, after the first frame member 4 and the second frame member 5 are aligned and held in the chassis 2, the third frame member 6 is then attached to the second frame member 5. This mounting configuration is shown in FIGS. 4 is a cross-sectional view taken along line BB in FIG. 1, and FIG. 5 is a cross-sectional view taken along line CC in FIG.

  An end portion of the third frame member 6 is integrally provided with a notch piece 9 that can be inserted into the second frame member 5. The notch pieces 9 are fixedly provided at both ends of the third frame member 6 at positions where they can be inserted into the second frame member 5, and can be elastically deformed. The notch piece 9 is provided in a state in which the notch piece 9 protrudes in a direction perpendicular to the second frame member 5 with respect to the longitudinal direction (center line direction) of the third frame member 6. As shown in FIG. 4, the distal end portion is composed of an unlocking portion 10 and an engaging portion 11.

  The locking release part 10 is a part for releasing the locked state of the joined third frame member 6 from the chassis 2, and the locking part 11 is inserted into the second frame member 5 in the locking part 11. This is a part for preventing separation from the chassis 2 and the second frame member 5 after being positioned. On the other hand, a space 12 is provided at the end of the second frame member 5 so that the notch piece 9 can be inserted. The space 12 has the width of the space 12 matched to the notch piece 9 in order to allow the notch piece 9 to be guided.

  With such a configuration, when the notch piece 9 is inserted into the space 12 provided at the end of the second frame member 5, the inclined surface of the locking portion 11 of the notch piece 9 is pressed against the wall surface of the chassis 2 during insertion. Then, the notch piece 9 is lifted and inserted while being elastically deformed upward (see FIG. 5). When the notch piece 9 is inserted into the space portion 12, the elastic deformation of the notch piece 9 is released, and the locking portion 11 is fitted into the notch hole 13 formed in the male portion 7 of the chassis 2 in the space portion 12. The third frame member 6 is locked to the chassis 2.

  The third frame member 6 is shared with and guided by a part of the guide portion for the second frame member 5 provided in the chassis 2. With this guide, the end of the locking portion 11 is engaged with the inner wall surface of the notch hole 13 provided in the chassis 2, and the notch piece 9 is engaged with the notch hole 13, so that the second frame member 5 is the first frame member 5. It is sandwiched between the frame member 4 and the third frame member 6 and is accurately joined to the chassis 2. When the locking portion 11 of the notch piece 9 is locked, the third frame member 6 cannot be detached from the second frame member 5 and the chassis 2. The notch piece 9 may be provided integrally with the third frame member 6 as a molded product. As a separate member that is mechanically connected like a screw, the third frame member is further formed by injection joining described later. 6 may be provided integrally.

  With such a configuration, the frame body is completed by attaching the first frame member 4, the second frame member 5, and the third frame member 6 to the chassis 2. At the same time, the liquid crystal display device is attached to the chassis 2. A front panel 1 can be provided. In this way, by assembling the frame members in order, it is possible to configure the front panel 1 that can be removed from the chassis 2 with one touch. The front panel 1 is removed as follows.

  As shown in FIG. 5, a release hole 15 is provided in the side wall 14 of the second frame member 5. The unlocking portion 10 of the notch piece 9 has a slightly inclined surface along the direction of the hole 15 that is the through hole, and is configured to have a gap with the chassis 2. When disassembling, a flat screwdriver 16 indicated by a two-dot chain line is inserted into the hole 15 of the second frame member 5 into the gap with the chassis 2, and the tip is abutted against the lower inclined surface of the locking release portion 10 of the notch piece 9. .

  Subsequently, when the tip of the flat screwdriver 16 is lifted upward while abutting against the inclined surface, as shown by a two-dot chain line in FIG. 4, the unlocking portion 10 is pushed upward by elastic deformation. Accordingly, the locking portion 11 is released from the inner wall surface of the notch hole 13 of the chassis 2 and the locked state is released. In this state, the third frame member 6 is pulled out and detached from the second frame member 5. Thereafter, the second frame member 5 is removed from the chassis 2 in the reverse order of the assembly, and then the first frame member 4 is removed from the chassis 2. As described above, the front panel 1 can be assembled and disassembled.

  Next, a second embodiment of the front panel will be described. FIG. 6 shows an explanatory diagram of a configuration in which a corner portion of the frame member 20 is a flat portion and each frame member 20 is coupled via the coupling member 21 to form a frame body. The coupling member 21 has an angle configuration of 90 degrees, and has a coupling portion 22 that engages with each frame member 20 at an end portion. A screw hole 23 is formed on the side surface of the coupling portion 22. On the other hand, an end portion of the frame member 20 is provided with a fitting portion 24 so that the coupling portion 22 can be inserted. A screw insertion hole 25 for screwing a male screw is formed on the side wall of the frame member 20 along the fitting portion 24 at a position coincident with the screw hole 23 of the coupling portion 22 when the coupling portion 22 is inserted. Is provided.

  With such a configuration, each frame member 20 is assembled at the four corners of the frame body via the coupling member 21 and fastened with screws to complete the frame body. Although not shown, the frame body may be fixed to the chassis 2 by a method of providing a guide portion in the chassis 2 and inserting the frame member 20 as described above. However, the second embodiment is disadvantageous in that the screw is exposed on the surface of the frame, and a decoration process on the screw head is necessary in consideration of design. Moreover, you may make it the structure fastened with a volt | bolt from the back surface side of the chassis 2 like the fragmentary sectional view shown in FIG. In this case, if the screw fastening portion is on the back surface and attached to the chassis 2 side, it does not come out on the front surface.

  The description has been given on the assumption that the front panel 1 is fixed from the surface side of the chassis 2 of the liquid crystal display device. Next, a configuration example in which the front panel 1 is attached from the back side of the chassis 2 will be described. 7 and 8 are diagrams showing a third embodiment. 7 is a partial plan view showing the back surface of the front panel, and FIG. 8 is a cross-sectional view taken along the line DD of FIG. This is an example in which angle members 31 for fastening are arranged on the corners on the back side of the frame members 30 provided individually. The end portions of the frame member 30 are 45-degree inclined surfaces and are in contact with each other, and are L-shaped plate members in the grooves between the ribs 32 provided on the back surface of the end portions. An angle member 31 is inserted across both frame members 30.

  The structures of the two ribs 32 of the frame member 30 are arranged in parallel to each other, with the end portion being the tip bent inwardly in an L shape. An angle member 31 is inserted between the two ribs 32, and the angle member 31 is inserted in a gap between the two ribs 32 so as to be movable only along the longitudinal direction. The angle member 31 does not come off outwardly between the two ribs 32 across the longitudinal direction. The angle member 31 is provided with a plurality of screw holes. As shown in FIG. 7, the angle member 31 is positioned and set so as to be joined to both frame members 30. When this positioning is determined, the screw 33 is screwed into the screw hole of the angle member 31, and the tip of the screw is fixed. The angle member 31 is pressed against the step surface inside the rib 32 (the inside of the L-shaped tip) by the reaction force against the inner wall of the frame member 30. Thereby, the angle member 31 can be fixed to the step surface.

  As a result, the mutual frame members 30 are bonded and bonded with the inclined surfaces of 45 degrees accurately. In this way, each corner portion of the frame member 30 is fixed, and finally the frame body is fixed and integrated while maintaining the four corner portions in the form of 90 degrees. Next, as shown in FIG. 9, the front panel 1 completed as a frame is fastened with bolts, for example, via a flange portion 17 from the rear surface side of the chassis. In this case, it is needless to say that a bolt through hole 18 is provided on the chassis 2 side, and a screw hole is disposed in the frame member 30 at a required position via a boss portion.

  Although not shown, the positioning of the front panel 1 with respect to the chassis 2 is performed by providing a positioning member for this purpose, such as a pin. This embodiment is applied when the front panel 1 can be attached only from the rear surface of the chassis 2. Since the front panel 1 of this example has no uneven portion for attachment on the surface side, it is a preferable form in terms of design.

  When disassembling the frame, the reverse operation of the assembly may be performed. After the frame body is removed from the chassis 2, all the frame members 30 can be made into individual members by unscrewing the angle members 31. Although the above description has been made on the assumption that the front panel 1 can be disassembled, even the large front panel 1 can be applied to a case such as transportation when disassembling, but it remains integrated after disassembly. In some cases, there are no obstacles.

  The following example is an example in which after the front panel 1 is assembled, it is integrated into a fixed body. 10 and 11 are partial views showing the fourth embodiment. FIG. 10 is a partial plan view showing the CFC and the back surface of the panel 1, and FIG. 11 is a cross-sectional view taken along line EE of FIG. This example is an example in which the angle member 40 is used as a coupling member in accordance with the third embodiment. In this example, the angle member 40 is fixed to the frame member 41 through the resin 42 by injection molding. In this injection molding, only the corners of the front panel 1 are partially performed.

  Therefore, since the entire front panel 1 is not molded by an injection mold, the facility does not become large. As shown in FIG. 10, the angle member 40 is inserted and aligned across the ends of the two frame members 41 in the same manner as shown in FIG. The angle member 40 is installed with a gap from the inner wall of the frame member 41 as shown in the figure. The angle member is provided with a hole 43 for injection. The frame body having such a configuration has the same configuration at the four corners, and is installed in the mold apparatus A to perform injection molding.

  The resin 42 is injected into the cavity formed by the frame member 41 and the angle member 40 through the gate B of the mold. When the resin 42 is solidified, the angle member 40 is fixed to the both frame members 41, and the two opposing frame members 41 are integrated. In this way, the four corners of the frame are fixed via the angle member 40, and the front panel 1 as an integrated frame is completed. By doing in this way, the front panel 1 can be made into the integrated product equivalent to what was manufactured integrally by large sized injection molding. The technique of joining the frame members 41 and 41 and the angle member 40 via the injection-molded resin 42 is proposed by the present applicant and is known as injection joining, but is easy to understand. Therefore, the outline will be described.

  This joining technique is a technique in which, for example, a crystalline thermoplastic resin composition is injection joined to an aluminum alloy, and a metal and a resin are combined and integrated. The principle of this injection joining is as follows. In the example applied to an aluminum alloy, the surface treatment of the aluminum alloy is first performed. The aluminum alloy shape is immersed in a dilute aqueous solution of a water-soluble amine compound, and the aluminum alloy shape is finely etched with a weak base of the aqueous solution. It is something to be made.

  In addition, it has been confirmed that in this immersion, adsorption of amine compound molecules simultaneously occurs on the surface of the aluminum alloy shaped article. Next, the aluminum alloy shaped article subjected to this treatment is inserted into an injection mold, and the molten thermoplastic resin composition is injected at a high pressure. At this time, heat is generated by encountering the amine compound molecules adsorbed on the surface of the thermoplastic resin composition and the shape of the aluminum alloy. At almost the same time as this heat generation, this thermoplastic resin composition is rapidly cooled in contact with the aluminum alloy shape maintained at a low mold temperature, but because of the heat generation phenomenon, it does not solidify while crystallizing. The resin to be solidified will be delayed and maintained in a molten state and will sink into the recesses on the surface of the ultrafine aluminum alloy shaped article.

  The resin solidifies after entering the recess. As a result, the aluminum alloy shaped article and the thermoplastic resin composition are firmly bonded without the resin being peeled off from the aluminum alloy shaped article surface. The thermoplastic resin composition here is a crystalline resin, and is a resin composition mainly composed of a polyphenylene sulfide resin (referred to as “PPS”) or a polybutylene terephthalate resin (referred to as “PBT”). More specifically, the adhesion surface of the frame member 41 and the angle member 40 is, for example, a surface having a micron-order roughness by chemical etching, and the surface has a height or depth and a width of 10 to 10 by observation with an electron microscope. Projections or recesses having a length of 500 nm and a length of 10 nm or more have a period of 10 to several hundreds of nanometers and have an extremely fine uneven shape on the entire surface, and the surface is a thin layer of metal oxide or metal phosphate To.

  Although the frame member 41 is made of an aluminum alloy, it is preferable if the drawing material can be used as it is, but it may be a molding material. The resin used is as described above, but preferably has a linear expansion coefficient close to that of an aluminum alloy. The joint portion of the frame member 41 is subjected to surface treatment. In this surface treatment, the bonding surface is immersed in an erodible liquid for a predetermined time, and the bonding surface is made into a fine uneven surface having an average inner diameter of 10 to 80 nm. If this immersion time is lengthened, the depth of the concave portion is expanded and the average inner diameter of the concave portion is increased, so that the bonding force is reduced.

  The frame member 41 and the angle member 40 that have been surface-treated in this way are inserted into the mold and overlapped, and a cavity for the resin 42 is formed in the overlapped portion as shown in the figure. A thermoplastic resin composition of PPS or PBT is injected into this overlapping portion through the gate B of the mold apparatus A, and the frame member 41 and the angle member 40, which are aluminum alloys, and the resin 42 are joined. Since this joining is strong, disassembly is impossible. This resin composition is a resin composition containing, for example, 70 to 99% by weight of a PPS resin and 30 to 1% by weight of a polyolefin resin. This is injected at a temperature slightly higher than the mold temperature, that is, at a temperature of 100 ° C. or higher, preferably 120 ° C. or higher.

  After the bonding surface between the angle member 40 and the frame member 41 subjected to the surface treatment in this way is set at a predetermined position, the cavity provided between the angle member 40 and the frame member 41 is PPS or PBT. High hardness crystalline resin composition is injected and integrated. When each of the four corners is treated in the same manner, the front panel 1 is completed. The frame member 41 and the angle member 40 are metal shapes, and in the present embodiment, an aluminum alloy is used, but a copper alloy, a titanium alloy, stainless steel, or a steel material can also be applied.

  Further, in the present embodiment, in the connection relationship between the metal shape and the resin, in the present embodiment, the description has been made by performing the bonding via the angle material, but if the shape of the frame member is a shape that can be superposed on each other, It is also possible to inject and bond the resin to this overlapped portion. In this case, the angle member is unnecessary, and the coupling member is only the resin body. While various embodiments have been described above, it goes without saying that the present invention is not limited to these embodiments.

FIG. 1 is an overall front view of the front panel. FIG. 2 is a partial cross-sectional view of a liquid crystal display device assembled with a front panel according to the present invention. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a cross-sectional view taken along the line BB in FIG. 2 and shows a configuration for attaching the second frame member to the chassis. 5 is a cross-sectional view taken along the line CC of FIG. FIG. 6 is an explanatory diagram illustrating a configuration in which the corner portion of the front panel is coupled via a coupling member. FIG. 7 is a partial plan view on the back surface side showing a configuration in which two frame members are detachably coupled via an angle member. 8 is a cross-sectional view taken along the line DD of FIG. FIG. 9 is a partial cross-sectional view showing a configuration for fixing the front panel from the back side of the chassis. FIG. 10 is a partial plan view on the back surface side showing a configuration in which two frame members are fixedly integrated via an angle member. 11 is a cross-sectional view taken along line EE in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Front panel 2 ... Chassis 3 ... Display panel 4 ... 1st frame member 5 ... 2nd frame member 6 ... 3rd frame member

Claims (9)

A front panel that is attached to the front peripheral edge of the front surface of the chassis (2) that forms the base of the display device and constitutes a rectangular frame,
A first frame member (4) that forms one side of the frame and is engaged with and attached to the front side of the chassis (2);
Engaging with the front side of the chassis (2), forming the other two sides of the frame body, two first ends joined at both ends of the first frame member (4) via engaging portions. Two frame members (5);
A third frame that faces the first frame member (4), forms the remaining one side of the frame, and has an end joined to the other end of the second frame member (5) via an engaging portion. A front panel of a display device comprising the member (6). In the front panel of the display device according to claim 1,
Due to the engagement of the chassis (2) with the first frame member (4) and the second frame member (5), the chassis (2), the first frame member (4) and the first frame member A front panel of a display device, characterized in that the two-frame member (5) has a guide portion (7, 8) for relatively slidably guiding. In the front panel of the display device according to claim 1 or 2,
The engaging portion is configured such that an elastic deformation portion (9) formed integrally with the second frame member (5) or the third frame member (6) is engaged with or detached from the chassis (2). A front panel of a display device characterized by being. In the front panel of the display device according to claim 1 or 2,
The engaging portion engages between the other end portion of the second frame member (5) and the end portion of the third frame member (6), and is detachably coupled. A front panel of a display device, which is a connecting member (21, 31, 40). In the front panel of the display device according to claim 1 or 2,
A front panel of a display device, wherein a material of the first frame member (4), the second frame member (5), and the third frame member (6) is an aluminum alloy. In the front panel of the display device according to claim 1 or 2,
The first frame member (4), the second frame member (5), and the third frame member (6) are configured such that both end portions have slopes of 45 degrees and are joined to each other. The front panel of the display device. In the front panel of the display device according to claim 4,
The second frame member (20, 30), the third frame member (20, 30), and the coupling member (21, 31) are coupled to each other by screws. front panel. In the front panel of the display device according to claim 1 or 2,
The front panel of a display device, wherein the engaging portion is integrally coupled with a resin (42) injected by injection joining via a connecting member (40) engaged across both ends. . In the front panel of the display device according to claim 8,
The injection bonding is a surface treatment having fine uneven surfaces by chemical etching on the bonding surfaces of the both end portions of the first frame member, the second frame member, and the third frame member, and the bonding surfaces of the coupling members. A front panel of a display device, characterized in that the bonding is performed by injecting a high-hardness crystalline thermoplastic resin composition onto the joint surfaces.

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