JP2012053082A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device with which a panel chassis of a rear side of a panel module is reinforced, the number of parts is reduced, an adequate stiffness is obtained and the thin formation and weight saving are coped with.SOLUTION: In an image display device according to the present invention having a display panel module, a reinforcement diaphragm (51) is formed on a plate-like panel chassis provided on a rear surface of the display panel module. The reinforcement diaphragm includes a plurality of first diaphragms extending in the horizontal direction and a plurality of second diaphragms extending in the vertical direction. The first diaphragms and the second diaphragms are mutually continuously formed.

Description

  The present invention relates to an image display device, and more particularly to an image display device devised to increase rigidity.

  Conventionally, in an image display device such as a liquid crystal display device or a plasma display device, the rigidity of the display panel is ensured by arranging a metal flat plate (panel chassis) on the back side of the display panel such as a liquid crystal panel or a PDP. The method is widely used. However, for a large display panel exceeding 40 inches, for example, it is difficult to ensure rigidity using only a flat panel chassis. For this reason, conventionally, as described in, for example, Patent Document 1 below, a plurality of first reinforcing ribs extending in the longitudinal direction of the panel chassis and a plurality of second reinforcing ribs orthogonal to the back surface of the panel chassis are provided. The rigidity is improved by providing them in combination so as to form a cross-beam. The stand is fixedly held by the second reinforcing rib.

JP 2003-29643 A

  In the conventional image display device described in Patent Document 1, since the first and second reinforcing ribs are provided in the form of a cross beam on the back side of the panel chassis, the reinforcing ribs are fixed in association therewith. Members (fixing screws, etc.) are also required, which increases the number of parts and costs.

  In addition, since the reinforcing rib is disposed on the back side of the panel chassis, it is disadvantageous for making the entire image display device thinner (reducing the size in the depth direction).

  The present invention provides a technology that is advantageous in reducing the thickness of an image display device and that can improve the rigidity while reducing the number of components.

  The present invention is characterized in that rigidity is enhanced by forming a reinforcing diaphragm extending in a horizontal direction and a vertical direction in a panel chassis coupled to the back side of the display panel.

  According to the present invention, it is possible to improve the rigidity while reducing the thickness of the image display device and reducing the number of parts.

It is a disassembled perspective view which shows one Example of the image display apparatus in this invention. It is explanatory drawing which shows the television stand attachment method of an image display apparatus. It is the external view which looked at the panel chassis 4 which concerns on 1st Example from the back side. It is explanatory drawing of the aperture shape of the panel chassis 4 which concerns on 1st Example. It is a figure which shows the simulation result at the time of applying a predetermined load to the panel chassis 4 which concerns on 1st Example in the orthogonal | vertical direction. It is the external view which looked at the panel chassis 4 which concerns on 2nd Example from the back side. It is explanatory drawing of the aperture shape of the panel chassis 4 which concerns on 2nd Example. It is a figure which shows the simulation result at the time of applying a predetermined load to the panel chassis 4 which concerns on 2nd Example in the orthogonal | vertical direction. FIG. 5 is a cross-sectional view in the AA direction of FIGS. 3 and 4 showing an example of the shapes of the stand fixing diaphragms 21 and 22. FIG. 5 is a cross-sectional view in the BB direction of FIGS. 3 and 4 illustrating an example of the shape of a reinforcing diaphragm 51.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a first embodiment of an image display apparatus according to the present invention. In FIG. 1, the left side of the drawing is the front side, and the right side is the back side.

  The image display device 1 is, for example, a thin liquid crystal display device or a plasma display device. The main body of the image display device 1 includes a bezel 2, a display panel module 3, a panel chassis 4, and a back cover 6 that are arranged in order from the front side to the back side. For example, when the image display device is a liquid crystal display device, the display panel module 3 includes a liquid crystal panel and a backlight unit. The bezel 2 has a rectangular frame shape made of resin, for example, and holds the display panel module 3. Further, the display portion of the display panel module 3 is exposed from the opening of the bezel 2 to the front side. For example, a plate-like panel chassis 4 made of metal such as aluminum or iron is coupled to the back side of the display panel module 3 by, for example, screwing, and the display panel module 3 is attached to the back side of the panel chassis 4. Various electronic components to be driven (main board, power supply board, HDD storage device, etc., not shown) are mounted. The back cover 6 constitutes a back housing and protects electronic components mounted on the back side of the panel chassis 4. The back cover 6 is preferably made of a resin when the image display device is a liquid crystal display device, and is made of a metal such as iron or aluminum in order to prevent leakage of unnecessary radiation when the image display device is a plasma display device.

  When the image display apparatus 1 is assembled, the display panel module 3 and the panel chassis 4 are often handled as one unit component. The television stand 5 is attached to the panel chassis 4 and supports the image display device so that it is self-supporting.

  FIG. 2 is an explanatory diagram showing a method for attaching the television stand 5. For ease of explanation, illustration of the bezel 2, the display panel module 3, and the back cover 6 is omitted.

  As shown in FIG. 2, the television stand 5 is attached and fixed to the lower part of the panel chassis 4. Positioning is performed by bringing the fixing portion 5a of the television stand 5 into contact with the two positioning cutouts 24 provided on the panel chassis 4, and the panel chassis 4 is fastened to the panel chassis 4 with stand fixing screws 32. .

  In the state where the image display device 1 (only the panel chassis 4 is shown in FIG. 2) is self-supported by the television stand 5 as shown in FIG. 2, the following force (load) may be applied by an earthquake or a user. . For example, the force in the a direction applied when the main body is shaken due to an earthquake, or the force in the b direction when the user swings left and right with respect to the horizontal center of the image display device with the side. Etc. Even when these forces are applied to the image display device 1, in order to obtain display performance as the image display device 1, it is necessary to ensure a predetermined rigidity. In order to ensure rigidity against the forces in the a direction and the b direction, it is necessary to reinforce the panel chassis 4 in both the longitudinal direction (hereinafter referred to as the horizontal direction) and the short direction (hereinafter referred to as the vertical direction). It is. However, if reinforcing ribs that are separate members from the panel chassis 4 are provided for reinforcement, as in the image display device described in Patent Document 1, for example, the number of parts increases and this is disadvantageous in terms of cost. It is also disadvantageous for the thinning. On the other hand, in the image display apparatus according to the present embodiment, the rigidity is ensured by providing a diaphragm in the panel chassis 4, thereby reducing the component constant and being advantageous for making the apparatus thinner. Details of the aperture shape will be described below.

  FIG. 3 is an external view of the panel chassis 4 as seen from the back side. As shown in FIG. 3, the panel chassis 4 according to the present embodiment is formed with stand fixing diaphragms 21 and 22 and a reinforcing diaphragm 51. Here, the diaphragm is a stepped portion formed so as to rise (project) on the back side or the front side of the panel chassis 4.

  Each of the stand fixing diaphragms 21 and 22 is provided with a positioning cut and raised 24. Further, a fixing screw hole 23 for the stand fixing screw 32 for fixing the television stand 5 is also provided in the stand fixing diaphragms 21 and 22. FIG. 9 shows a horizontal cross-sectional view (A-A cross-sectional view in FIG. 3) of the stand fixing portion of the panel chassis 4 in which the stand fixing apertures 21 and 22 and the reinforcing aperture 51 are formed. As shown in FIG. 9, the stand-fixing diaphragms 21 and 22 are diaphragms that swell in the rear direction, and the reinforcing diaphragm 51 is a diaphragm that swells in the front side.

  The reason why the stand fixing diaphragms 21 and 22 are diaphragms that rise in the back direction will be described with reference to FIG. FIG. 10 is a vertical cross-sectional view (BB cross-sectional view) of the panel chassis 4 shown in FIG. 3 at the image display device center position. In FIG. 10, the reference numerals in parentheses correspond to the stop signs shown in FIG. As shown in FIG. 10, a bend 81 that is bent toward the front side of the panel chassis 4 is formed at the lower end of the panel chassis 4, thereby preventing the panel chassis 4 itself from warping. . A bend 42 that is bent toward the front side of the panel chassis 4 is also formed at the upper end of the panel chassis 4, thereby preventing the panel chassis 4 itself from warping. On the other hand, as described above, the television stand 5 is inserted from below the image display device and attached to the stand fixing diaphragms 21 and 22. For this reason, if the stand-fixing stops 21 and 22 are formed so as to protrude to the front side, the stop is formed up to the lower end of the panel chassis 4 where the bend 81 is to be provided, or the bend 81 is locally removed. Therefore, it is difficult to form the bend 81. Therefore, in this embodiment, the stand fixing diaphragms 21 and 22 are formed so as to rise in the back direction.

  In addition, as shown in FIG. 10, the reason that the reinforcing diaphragm 51 is raised in the front direction is to secure a distance from a power supply board or the like provided on the back side of the panel chassis 4. When a power supply board or the like is provided on the back side of the panel chassis 4, it is necessary to form a predetermined gap between the panel chassis 4 and the board in order to prevent or reduce a short circuit or electromagnetic influence. . If the reinforcing diaphragm 51 is formed so as to be raised in the back direction, the distance from the power supply board or the like is shortened. Therefore, a cut-and-raised part for attaching the power supply board or the like provided in the panel chassis 4 is provided in the back direction. This is disadvantageous in reducing the overall thickness of the image display device. Therefore, in this embodiment, the reinforcing diaphragm 51 is formed so as to rise in the front direction.

  Next, the shape of the reinforcing diaphragm 51 according to the present embodiment will be described. FIG. 4 is an explanatory diagram of the aperture shape of the first panel chassis. Here, the reinforcing diaphragm 51 is a continuous integral diaphragm, but is divided into reference numerals 511 to 518 according to the position and function in FIG. As shown in FIG. 4, in this embodiment, diaphragms 516, 517, and 518 are formed as reinforcing diaphragms extending in the lateral direction (horizontal direction of the image display device). The aperture 516 is formed near the upper end of the panel chassis 4, the aperture 517 is formed near the lower end of the panel chassis 4, and the aperture 518 is formed between the apertures 516 and 517 closer to the aperture 516. In addition, diaphragms 511, 512, 513, 514, and 515 are formed as reinforcing diaphragms extending in the vertical direction (vertical direction of the image display device). The diaphragm 511 is provided near the left side when the panel chassis 4 is viewed from the back side, the diaphragm 512 is provided near the right side when the panel chassis 4 is viewed from the back side, and the diaphragms 513 to 515 are provided between the diaphragms 511 and 512. The diaphragm 515 is provided at a central position in the horizontal direction of the panel chassis 4. These diaphragms 511 to 518 are diaphragms formed on one surface, all connected as described above. Stiffness against the load in the b direction can be increased by the diaphragms 516, 517, and 518 extending in the lateral direction, and rigidity against the load in the a direction can be increased by the diaphragms 511, 512, 513, 514, and 515 extending in the vertical direction. It becomes.

  As described above, in this embodiment, the stand fixing diaphragms 21 and 22 and the reinforcing diaphragm 51 to which the television stand 5 is attached are formed on the panel chassis 4, so that the panel chassis 4 is connected via the television stand 5. The rigidity with respect to the load (based on the weight of the image display device) transmitted to the fixed portion and the rigidity with respect to the load applied to the entire panel chassis 4 can be increased. Further, the reinforcing diaphragm 51 includes a plurality of diaphragms extending in the horizontal direction and a plurality of diaphragms extending in the vertical direction, and these diaphragms are formed continuously (integrally), so that they are perpendicular to the surface of the panel chassis 4. It is possible to increase the rigidity with respect to a load in a specific direction (force in a direction) and a load in a rotating direction (force in direction b). That is, according to the present embodiment, the rigidity with respect to various loads described above is improved only by forming a diaphragm integrated with the panel chassis 4 without providing a new reinforcing member such as a bar-like or frame-like metal member. Can be made. Therefore, according to this embodiment, it is possible to provide a reinforcing structure that has a small number of parts and is advantageous for thinning.

  Next, a second embodiment of the present invention will be described. The second embodiment is characterized by the shape of a reinforcing diaphragm that is more rigid than the first embodiment with respect to a load applied perpendicularly to the display surface of the display panel module. Before describing the shape of the reinforcing diaphragm according to the second embodiment, the rigidity of the panel chassis 4 according to the configuration of the first embodiment will be described.

  In order to confirm the rigidity of the panel chassis 4 when the reinforcing diaphragm 51 described in the first embodiment is provided, a deformation analysis by simulation was performed. FIG. 5 shows a simulation result when a predetermined load is applied to the upper end portion of the panel chassis 4 in the vertical direction with respect to the panel chassis 4 with the fixed portion of the television stand 5 as a restraint point. In FIG. 5, the horizontal axis indicates the distance from the lower end of the panel chassis 4, and the vertical axis indicates the amount of displacement of the panel chassis 4.

  As a result of the simulation, it was found that the panel chassis 4 was deformed so as to be bent at a point B as shown in FIG. This portion is a position corresponding to the diaphragm 517 of the panel chassis 4. That is, the presence of the lateral diaphragm 517 near the TV stand fixing portion may reduce the rigidity of the portion.

  Therefore, in the second embodiment, a reinforcing diaphragm 52 as shown in FIG. 6 is formed in the panel chassis 4 in order to increase the rigidity against the load applied perpendicularly to the display surface of the display panel module. Details of the reinforcing diaphragm 52 will be described with reference to FIG.

  FIG. 7 is an explanatory view of the aperture shape of the panel chassis according to the second embodiment. Here, the reinforcing diaphragm 52 includes a continuous integral diaphragm, but is divided into diaphragms 521 to 529 in accordance with the position and function for easy explanation. The panel chassis 4 of FIG. 7 differs from the panel chassis 4 of the first embodiment only in the shape of the reinforcing diaphragm, and the other shapes are the same.

  As shown in FIG. 7, in this embodiment, diaphragms 526, 527, 528, and 529 are formed as reinforcing diaphragms extending in the lateral direction (the horizontal direction of the image display device). The diaphragm 526 is formed near the upper end of the panel chassis 4, the diaphragms 528 and 529 are formed near the lower end of the panel chassis 4, and the diaphragm 528 is formed near the diaphragm 526 between the diaphragms 526 and 527. Further, diaphragms 521, 522, 523, 524, and 525 are formed as reinforcing diaphragms extending in the vertical direction (vertical direction of the image display device). The diaphragm 521 is provided near the left side when the panel chassis 4 is viewed from the back side, the diaphragm 522 is provided near the right side when the panel chassis 4 is viewed from the back side, and the diaphragms 523 to 525 are provided between the diaphragms 521 and 522. The diaphragm 525 is provided at the center position in the horizontal direction of the panel chassis 4. The diaphragms other than the diaphragm 525 are connected to each other and formed with one surface.

  The portion of the reinforcing diaphragm 52 of the second embodiment that differs greatly from the shape of the reinforcing diaphragm 51 of the first embodiment is that the laterally extending reinforcing diaphragm located below the panel chassis 4 is divided into a diaphragm 527 and a diaphragm 529. This is because the diaphragm extending in the lateral direction connected to the diaphragm 527 and the diaphragm 529 is eliminated from the upper part of the TV stand fixing portion (the diaphragms 21 and 22 for fixing the stand). The above-described diaphragms 526, 527, 528, and 529 extending in the lateral direction can increase the rigidity against the load in the b direction, and the above-described longitudinal directions 521, 522, 523, 524, and 525 can increase the rigidity against the load in the a direction. It becomes possible. In addition, since the apertures 527 and 529 are connected by the apertures 523, 524, and 528, the rigidity against the load in the b direction hardly decreases.

  Here, in order to confirm the rigidity of the panel chassis 4 when the reinforcing diaphragm 51 is provided, deformation analysis by simulation similar to FIG. 5 was performed. As in the case of the first embodiment, a simulation result when a predetermined load is applied to the upper end portion of the panel chassis 4 in a direction perpendicular to the panel chassis 4 with the fixed portion of the television stand 5 as a restraint point is shown. It is shown in FIG. In FIG. 8, the analysis result of the reinforcement diaphragm 52 is shown by the solid line 62, and the analysis result of the reinforcement diaphragm 51 is shown by the broken line 61 for comparison.

  As shown in FIG. 8, in the case of the reinforcing diaphragm 51, the portion B is deformed to be bent, whereas in the case of the reinforcing diaphragm 52, there is no deformation to be bent and the displacement amount is about 1 as well. As can be seen from FIG.

  This is because, like the first embodiment, the diaphragm 525 extending in the vertical direction is disposed between the diaphragms 21 and 22 for fixing the television stand 5, and the diaphragm 525 fixes the stand fixing screw 32. In the second embodiment, the diaphragm extending in the lateral direction does not intersect with the diaphragm 525, and the diaphragms 521, 526, and 522. 529, 524, 528, 523, and 527, and there is no portion where the aperture is cut off.

  The image display device 1 is configured by combining the bezel 2, the display panel module 3, the back cover 6, and the television stand 5 with the panel chassis 4 having the reinforcing diaphragm 52 as described above, and a predetermined load is applied in the a direction and the b direction. However, it was confirmed that there was no problem in performance.

  As described above, in the present embodiment, the rigidity can be ensured by providing the reinforcing diaphragm 52 in the panel chassis 4, so that it is not necessary to reinforce with a separate member. Accordingly, the number of parts can be minimized as in the first embodiment, and the apparatus can be made thinner and lighter. Further, it is possible to increase the rigidity of the panel chassis 4 immediately above the stand fixing portion as compared with the first embodiment.

DESCRIPTION OF SYMBOLS 1 ... Image display apparatus 2 ... Bezel 3 ... Display panel module 4 ... Panel frame 5 ... TV stand 6 ... Back cover 21, 22 ... Television stand fixing aperture 23 ... TV stand 5 mounting hole 24 ... TV stand 5 positioning cut and raised 32 ... TV stand 5 fixing screws 51, 52 ... Reinforcing diaphragm

Claims (6)

In an image display device having a display panel module,
A plate-shaped panel chassis provided on the back side of the display panel module,
The panel chassis is formed with a reinforcing diaphragm, and the reinforcing diaphragm includes a plurality of first diaphragms extending in the horizontal direction and a plurality of second diaphragms extending in the vertical direction. An image display device characterized in that two apertures are formed continuously.   The image display device according to claim 1, wherein a stand fixing diaphragm to which a stand for supporting the image display device is attached is further formed on a lower end side of the panel chassis. apparatus.   3. The image display device according to claim 2, wherein the reinforcing diaphragm projects to the back side of the image display apparatus, and the stand fixing diaphragm projects to the front side of the image display apparatus.   3. The image display device according to claim 2, wherein the first diaphragm is provided between the upper and lower ends of the panel chassis and between them, and the second diaphragm is disposed between the left and right ends of the panel chassis and between them. An image display device formed.   5. The image display device according to claim 4, wherein the first diaphragm provided on the lower end side of the panel chassis is divided in the horizontal direction.   5. The image display device according to claim 4, wherein the first diaphragm provided on the lower end side of the panel chassis is not formed above the stand fixing diaphragm.

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