JP2010072366A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device that prevents sounding and enhances the rigidity of a front cabinet without increasing the number of components. <P>SOLUTION: The display device includes a panel module 1 having a display surface 11a on the front side, and the front cabinet 2 enclosing a peripheral edge portion of the panel module 1 from the front side, wherein the front cabinet 2 is provided with long-side ribs 23 and 23 and short-side ribs protruded behind along peripheral edges of the display surface 11a, and contact projections 25, protruded so as to have their ends behind those ribs. Consequently, the contact projections 25 suppress fine vibrations of the panel module 1, and make transmission area of the fine vibrations small to suppress transmission of the fine vibrations, thereby preventing sounding without increasing the number of components. Further, the long-side ribs 23 and 23 and short-side ribs enhance the rigidity of the front cabinet 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device such as a liquid crystal display device or a plasma display device that includes a panel module having a display surface for displaying an image, and a front cabinet that surrounds a peripheral portion of the panel module from the front side.

  A display device such as a liquid crystal display device or a plasma display device covers a panel module having a display surface for displaying an image on the front side, a front cabinet that surrounds a peripheral portion of the panel module from the front side, and a rear side of the panel module. It has a back cabinet. The front cabinet and the back cabinet are integrated by male screws to constitute a housing for housing the panel module.

  In recent years, display devices have become thinner and larger, and accordingly, the front cabinet that constitutes the display device has also become larger and thinner in order to make the display device thinner. Since the front cabinet having such a large and thin shape has low rigidity, there is a problem that warpage is likely to occur due to deformation caused by residual stress generated during molding.

  Further, for example, a speaker is provided on the lower side of the front cabinet in the display device, and when the speaker outputs sound, slight vibration occurs. This slight vibration is transmitted to the panel module through the front cabinet, and there is a possibility that the panel module may vibrate, resulting in a noise or a malfunction in the panel module. For this reason, there has been proposed a display device configured such that a buffer member for buffering minute vibrations is interposed between the front cabinet and the panel module so that the front cabinet and the panel module do not directly contact each other (for example, patents). Reference 1).

  In the display device disclosed in Patent Document 1, a plurality of ribs 101a and 101b are provided on the rear surface of the front cabinet 101 so as to be perpendicular to the rear surface and face each other, and the ribs 101a and 101b are provided. A buffer member 111 is inserted into the gap (see FIG. 7). The liquid crystal display panel 102 is held by the front bezel 107 and the rear bezel 108 via spacers 109 and 110 at the peripheral edge of the liquid crystal display panel 102. On the rear side of the liquid crystal display panel 102, a backlight unit 103 that irradiates light to the rear surface of the liquid crystal display panel 102 is attached. As shown in FIG. 7, the panel module including the liquid crystal display panel 102, the backlight unit 103, the front bezel 107, and the rear bezel 108 includes a front module so as to surround the periphery of the panel module from the front side. The front cabinet 101 is attached with the buffer member 111 in contact with the bezel 107.

Since the front cabinet 101 and the panel module are not in direct contact with each other by the buffer member 111 inserted between the front cabinet 101 and the front bezel 107 in this way, and the micro vibration is buffered by the buffer member 111, The transmission of slight vibration can be suppressed. In addition, since the ribs 101a and 101b are provided on the rear surface of the front cabinet 101 along the entire periphery of the display surface, the rigidity of the front cabinet 101 can be increased, and warping during molding can be suppressed. can do.
JP 2007-310258 A

  However, in the display device of Patent Document 1, the buffer member 111 is interposed between the front cabinet 101 and the panel module in order to suppress transmission of fine vibrations to the panel module, so that the number of parts increases. At the same time, it is necessary to insert the buffer member 111 into the gap between the ribs 101 a and 101 b provided on the rear surface of the front cabinet 101. In recent years, there has been a desire to reduce the number of parts because material costs have soared in spite of a significant price drop of display devices.

  In the display device of Patent Document 1, it is conceivable to configure without using the buffer member 111 in order to reduce the number of parts. However, when the buffer member 111 is not used, the front cabinet 101 is restrained from being deformed even though the warp is slightly caused, and the panel module including the liquid crystal display panel 102 and the front panel are caused by superimposing manufacturing errors of the respective members. There was a problem that the gap between the cabinet 101 was not uniform.

  The present invention has been made in view of such circumstances, and without increasing the number of parts, it is possible to suppress the slight vibration of the panel module to prevent noise and to increase the rigidity of the front cabinet. It is an object to provide a display device that can be used.

  The display device according to the present invention includes a panel module having a display surface on the front side, and a front cabinet that surrounds the peripheral portion of the panel module from the front side, wherein the front cabinet extends along the periphery of the display surface. A ridge that protrudes rearward and reinforces the front cabinet, and a protrusion that protrudes so that its end is located behind the ridge and contacts the peripheral edge of the panel module. It is characterized by having.

  In the present invention, the front cabinet includes a protrusion protruding rearward along the peripheral edge of the display surface and a contact protrusion protruding so that the end of the protrusion is positioned behind the protrusion. To prevent the panel module from coming into direct contact with the panel module other than the contact protrusion. Thus, the transmission of minute vibrations is suppressed, so that it is possible to prevent sound generation without increasing the number of parts. Further, since the protrusions reinforce the front cabinet, the rigidity of the front cabinet can be increased, and warping during molding can be suppressed.

  In the display device according to the present invention, it is preferable that the display surface has a rectangular shape, and the contact protrusion is provided at a position facing a corner of the display surface.

  In the present invention, the contact protrusions provided at the positions facing the corners of the display surface are in contact with the positions corresponding to the four corners of the display surface at the peripheral edge of the panel module. It can be surely held uniformly, and the fine vibration of the panel module can be suppressed to further prevent noise.

  In the display device according to the present invention, it is preferable that the contact protrusion is further provided in the middle between the corners.

  According to the present invention, since the contact protrusion is further provided at a position opposite to the middle between the corners of the display surface and the contact protrusion is brought into contact with the peripheral edge of the panel module, the panel module is more reliably secured. The panel module can be held evenly, and fine vibrations of the panel module can be suppressed to further prevent noise.

  In the display device according to the present invention, it is preferable that the protrusion is provided along the entire periphery of the display surface.

  In this invention, since the protrusions are provided on the front cabinet along the entire periphery of the display surface, the rigidity of the front cabinet can be further increased, and the warpage during molding can be suppressed. Can do. Further, by increasing the rigidity of the front cabinet, the number of fastening parts for fastening the front cabinet and the panel module or the back cabinet can be reduced.

  In the display device according to the present invention, it is preferable that the contact protrusion is provided integrally with the protrusion.

  In this invention, since the contact protrusion is provided integrally with the protrusion, the rigidity of the contact protrusion can be increased, and the rigidity of the front cabinet can be further increased. Warpage can be suppressed. Further, by increasing the rigidity of the front cabinet, the number of fastening parts for fastening the front cabinet and the panel module or the back cabinet can be reduced.

  According to the present invention, without increasing the number of parts, it is possible to suppress the fine vibration of the panel module and prevent the sound from coming out, and to increase the rigidity of the front cabinet.

  Hereinafter, the present invention will be described in detail by taking a liquid crystal display device, a so-called liquid crystal television as an example, with reference to the drawings showing embodiments thereof. FIG. 1 is a schematic exploded perspective view showing a configuration of a display device according to the present invention. FIG. 2 is an enlarged cross-sectional view of a part of the display device according to the present invention.

  In the figure, reference numeral 1 denotes a panel module having a flat rectangular parallelepiped shape. As shown in FIG. 2, the panel module 1 includes a liquid crystal panel 11 having a display surface 11 a for displaying an image on the front surface, and a front holder 12 and a rear holder 13 that hold the periphery of the liquid crystal panel 11 back and forth. And a backlight unit 14 provided on the rear side of the liquid crystal panel 11 via the rear holding body 13 and irradiating the rear surface of the liquid crystal panel 11 with light.

  The front holding body 12 includes a rectangular frame portion 12a and a peripheral wall 12b extending rearward substantially orthogonally from the outer edge of the rectangular frame portion 12a. The front holder 12 is provided so that the inner edge of the rectangular frame 12 a faces the peripheral edge of the display surface 11 a of the liquid crystal panel 11. A spacer 15 having a rectangular frame shape is interposed between the facing portions of the front holder 12 and the liquid crystal panel 11.

  The rear holding body 13 includes a rectangular frame portion 13a and a peripheral wall 13b extending rearward substantially orthogonally from the outer edge of the rectangular frame portion 13a. The rear holding body 13 is fitted in the front holding body 12 so that the inner edge portion of the rectangular frame portion 13 a faces the peripheral edge portion of the rear surface of the liquid crystal panel 11. Thereafter, a spacer 16 having a rectangular frame shape is interposed between the facing portions of the holding body 13 and the liquid crystal panel 11. With this configuration, the liquid crystal panel 11 is sandwiched between the front holding body 12 and the rear holding body 13 via the spacers 15 and 16.

  The backlight unit 14 includes a metal backlight chassis having a housing shape with an opening on one surface, and a plurality of light sources accommodated in the backlight chassis. The backlight unit 14 is fitted into the rear holding body 13 from the rear side.

  Such a panel module 1 is provided with a resin front cabinet 2 that surrounds the peripheral edge of the panel module 1 from the front side. FIG. 3 is a schematic perspective view of the front cabinet 2 of the display device as viewed from the rear side. The front cabinet 2 includes a rectangular frame portion 21 having a rectangular window, and a peripheral wall 22 that extends rearward substantially orthogonally from the outer edge of the rectangular frame portion 21. On the rear surface of the rectangular frame portion 21 of the front cabinet 2, ribs that are protrusions protruding rearward are integrally formed.

  FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3, and is an enlarged cross-sectional view in the vicinity of the rib of the front cabinet 2. FIG. 5 is a perspective view of the vicinity of the ribs of the front cabinet 2. FIG. 6 is a rear view of the front cabinet 2. On the rear surface of the rectangular frame portion 21 of the front cabinet 2, long side ribs 23 and 23 parallel to the long side of the inner peripheral edge and short side ribs 24 and 24 parallel to the short side are provided along the inner peripheral edge. Each is provided. The ends of the long side ribs 23 and 23 and the short side ribs 24 and 24 are positioned at the ends and the rear of the long side ribs 23 and 23 and the short side ribs 24 and 24 as shown in the drawing. In this manner, the contact protrusions 25 are provided integrally.

  The abutment protrusions 25 are formed so as to be pressed against the rectangular frame portion 12a of the front holding body 12 and to be fitted to the front holding body 12 when the front cabinet 2 is attached to the panel module 1. is there. As a result, the contact protrusions 25, 25... Reliably contact the panel module 1. The projecting height of the contact protrusions 25, 25... Is appropriate so that the panel module 1 is not in direct contact with portions other than the contact protrusions 25, 25. It is set to. The level difference between the long side ribs 23, 23 and the short side ribs 24, 24 and the contact protrusions 25, 25... Is reduced to increase the rigidity of the front cabinet 2, for example, 0.3 mm. Further, the contact area of the contact protrusions 25, 25... With the panel module 1 can securely hold the panel module 1 so as not to be rattled by the transmitted fine vibration, and transmits the fine vibration from the front cabinet 2. It is set appropriately so that it can be suppressed.

  On the rear surface of the rectangular frame portion 21 of the front cabinet 2, as shown in FIG. 6, a plurality of (four in the figure) boss portions 26, 26,. . On the other hand, the panel module 1 is provided with a through hole (not shown) at a position aligned with the boss portions 26, 26..., And the male screw inserted into the through hole is a boss portion 26 for fixing the panel module 1. , 26... Are integrated with each other by the front cabinet 2 and the panel module 1.

  Further, on the rear surface of the rectangular frame portion 21 of the front cabinet 2, there are a plurality of cylindrical boss portions 27, 27 (two in the figure) for fixing the back cabinet and a plurality of ribs 27a, 27a,. It is erected.

  Also, a plurality of cylindrical boss portions (six in the figure) boss portions 28, 28,... Are respectively erected on the lower side of the rear surface of the rectangular frame portion 21 of the front cabinet 2. A speaker (not shown) is fixed to the front cabinet 2 by screwing male screws into these boss portions 28, 28.

  Further, on the rear surface of the rectangular frame portion 21 of the front cabinet 2, a plurality of (four in the figure) boss portions 29, 29,... For fixing the center angle that bridge the rear side of the panel module 1 stand. It is set up. A center angle (not shown) is fixed to the front cabinet 2 by screwing male screws into these boss portions 29, 29.

  On the other hand, the panel module 1 is provided with a back cabinet 3 that covers the rear side of the panel module 1. The back cabinet 3 includes a dish-shaped cover part 31 and a flange part 32 provided continuously to the periphery of the dish-shaped cover part 31. The back cabinet 3 is fitted to the front cabinet 2 so as to cover the panel module 1 from the rear surface with the dish-shaped cover 31 while being engaged with the ribs 27a, 27a, ... for positioning the back cabinet 3 of the front cabinet 2. After that, the male screw is inserted through a through hole (not shown) and screwed into the boss portions 27 and 27 for fixing the back cabinet 3 to be fixed to the front cabinet 2, and the panel module 1 is accommodated together with the front cabinet 2. The housing is configured.

  As described above, the panel module 1 held by the front cabinet 2 and the back cabinet 3 is supported in a standing state by the stand 4.

  In the display device according to the present invention configured as described above, the long-side ribs 23 and 23 and the short-side ribs 24 and 24, which are protrusions protruding rearward along the peripheral edge of the display surface 11a, The front cabinet 2 is provided with abutting projections 25, 25... Projecting so that the end portions are located behind the long side ribs 23, 23 and the short side ribs 24, 24. Since the abutment protrusions 25, 25... Are brought into contact with the front holding body 12 of the panel module 1 to hold the panel module 1, when a slight vibration is transmitted to the panel module 1, Vibration can be suppressed. Since the panel module 1 is not in direct contact with the portion other than the contact protrusions 25, 25... Of the front cabinet 2, the area where the front cabinet 2 and the panel module 1 are in contact with each other is reduced, and the front cabinet 2 is attached to the front cabinet 2. When fine vibration is generated by the speaker, transmission of the fine vibration to the panel module 1 can be suppressed. As a result, it is possible to prevent sound generation without increasing the number of parts.

  Contact projections 25, 25... Are provided at the corners of the display surface 11a having a rectangular shape and at positions facing the middle between the corners, and the contact projections 25, 25. Since it is made to contact | abut in the position corresponding to the middle between a corner and a corner part, the panel module 1 can be hold | maintained uniformly more reliably, the fine vibration of the panel module 1 can be suppressed, and a noise can be prevented further. be able to. Further, since the contact protrusions 25, 25... Are press-contacted to the front holding body 12 of the panel module 1 so as to be minus-fitted with the front holding body 12, the contact protrusions 25, 25. Therefore, the panel module 1 can be prevented from being vibrated and further prevented from sounding.

  In addition, the front cabinet 2 is reinforced by providing the front cabinet 2 with the long side ribs 23 and 23 and the short side ribs 24 and 24 that are ridges along the peripheral edge of the display surface 11a. The sectional moment of inertia of the front cabinet 2 can be increased, and the rigidity can be increased. Further, the abutment protrusions 25, 25... Are projected so that the end portions are located behind the long side ribs 23, 23 or the short side ribs 24, 24, and the long side ribs 23, 23 or the short side ribs 24, Since it is provided integrally with 24, the rigidity of the contact protrusions 25, 25... Can be increased, and the rigidity of the front cabinet 2 can be further increased. As a result, the front cabinet 2 is less likely to be deformed due to external influences, and even when the front cabinet 2 is a large molded product, warpage is unlikely to occur during molding.

  Further, by increasing the rigidity of the front cabinet 2 in this way, the fastening force of a fastening component such as a male screw that fastens the front cabinet 2 and the panel module 1 or the back cabinet 3 can be increased. The number of can be reduced.

  In the above embodiment, the contact protrusions 25, 25... Are integrally provided with the long side ribs 23, 23 or the short side ribs 24, 24. However, the contact protrusions, the long side ribs, and the short sides are provided. The ribs may be provided separately.

  Further, in the above embodiment, four ribs of the long side ribs 23, 23 and the short side ribs 24, 24 are provided, and the abutting protrusions are provided at both ends and the center in the longitudinal direction of each of the ribs 23, 23, 24, 24. 25, 25... Are provided, but the position and number thereof are not limited thereto. For example, instead of the four ribs of the long side ribs 23 and 23 and the short side ribs 24 and 24, only one annular rib may be provided so as to circulate along the periphery of the display surface 11a. The contact protrusions can hold the panel module 1 securely without rattling, and the contact area with the panel module 1 is appropriate so that transmission of micro vibrations from the front cabinet 2 can be suppressed. As long as it is provided.

  Further, when a buffer member for buffering slight vibration is attached between the front cabinet 2 and the panel module 1 so that the front cabinet 2 and the panel module 1 are not in direct contact with each other, the long side ribs 23 and 23 and the short side ribs 23 and 23 are used. By using the side ribs 24 and 24 as guides, the pasting operation can be easily performed.

  Furthermore, in the above embodiment, the liquid crystal television has been described as an example of the display device. However, the present invention is not limited to this, and the present invention can also be applied to display devices such as liquid crystal display devices other than liquid crystal televisions, plasma display devices, and EL display devices. In addition, it goes without saying that various modifications can be made within the scope of the matters described in the claims.

It is a typical exploded perspective view showing composition of a display concerning the present invention. It is sectional drawing to which some display apparatuses based on this invention were expanded. It is the typical perspective view which looked at the front cabinet of the display apparatus from the back side. It is sectional drawing by the IV-IV line of FIG. It is a perspective view of the rib vicinity of a front cabinet. It is a rear view of a front cabinet. It is sectional drawing to which some conventional display apparatuses were expanded.

Explanation of symbols

1 Panel module 11a Display surface 2 Front cabinet 23 Long side rib (projection)
24 Short side ribs
25 Contact protrusion

Claims (5)

  In a display device comprising a panel module having a display surface on the front side and a front cabinet that surrounds the peripheral portion of the panel module from the front side, the front cabinet projects rearward along the peripheral edge of the display surface, A protrusion that reinforces the front cabinet, and an abutting protrusion that protrudes so that its end is located behind the protrusion and abuts against the peripheral edge of the panel module. Display device.   The display device according to claim 1, wherein the display surface has a rectangular shape, and the contact protrusion is provided at a position facing a corner of the display surface.   The display device according to claim 2, wherein the contact protrusion is further provided in the middle between the corners.   The display device according to claim 1, wherein the protrusion is provided along the entire periphery of the display surface.   The display device according to claim 1, wherein the contact protrusion is provided integrally with the protrusion.

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