JP2010015098A - Video display device - Google Patents

Abstract

Provided is an image display device that suppresses bending deformation of a panel module and prevents breakage of the glass of the panel even when an impact due to falling is applied.
A panel 21 that can display an image, a substantially flat chassis 11 that supports the panel 21, and a front housing 30 to which the chassis 11 is fixed. The chassis 11 supports the panel 21. In at least one side of the region, the fixing portion 13 is formed so as to protrude in the surface direction, and a continuous surface of the fixing portion 13 is fixed to the front housing 30.
[Selection] Figure 2

Description

  The present invention relates to a video display device such as a plasma display device known as a thin, lightweight display device having a large screen. In particular, the present invention relates to an improved structure against a drop impact.

  In recent years, flat-screen televisions have been widely used. In particular, plasma display devices can display at high speed, have a wide viewing angle, can be easily enlarged, and are self-luminous, so that display quality is high. For these reasons, development is progressing as a display device at a place where many people gather or a display device for enjoying a large screen image at home.

  Panels used in this plasma display device are roughly classified into AC type and DC type in terms of driving, and there are two types of discharge types: surface discharge type and counter discharge type. From the standpoint of manufacturing simplicity, the mainstream at present is the surface discharge type with a three-electrode structure.

  In the panel structure of the surface discharge type plasma display, at least a pair of substrates transparent at least on the front side are arranged so as to form a discharge space between the substrates, and a partition for partitioning the discharge space into a plurality of substrates is provided on the substrate. A plurality of discharge cells are configured by arranging a group of electrodes on the substrate so that a discharge is generated in a discharge space partitioned and partitioned by the barrier ribs, and providing phosphors that emit red, green, and blue light that are emitted by the discharge. Therefore, the phosphor is excited by vacuum ultraviolet light having a short wavelength generated by discharge, and red, green, and blue visible light is emitted from red, green, and blue discharge cells, respectively, to perform color display.

In such a plasma display device, for example, as described in Patent Document 1, a glass-main panel is held on the front side of a chassis member made of metal such as aluminum, and is placed on the back side of the chassis member. A circuit board constituting a drive circuit for causing the panel to emit light is arranged, and a panel module is configured by connecting the panel and the circuit board by a plurality of flexible wiring boards at the peripheral edge of the chassis member. The panel module has a structure in which the peripheral edge of the chassis member is fixed to a mounting bracket provided on the front frame by a plurality of protrusions provided between the flexible wiring boards, and is accommodated in a housing made up of the front frame and the back cover. is there.
JP 2007-121829 A

  However, in the conventional technology as described above, the panel is thin glass and large in size, so it is heavy, and when it is accidentally turned to the front side during installation, the panel is moved toward the front of the panel by a drop impact. When acceleration due to its own weight is applied, the panel module is fixed and supported at the periphery, causing deflection at the center, particularly large deflection at the long side of the panel module with a long support distance, which breaks the glass panel. There was a problem that.

  An object of the present invention is to provide an image display device that suppresses bending deformation of a panel module and prevents breakage of the glass of the panel even when an impact due to falling is applied.

  An image display device of the present invention includes a panel capable of displaying an image, a substantially flat chassis that supports the panel, and a housing to which the chassis is fixed, and the chassis supports the panel. At least one side of the area is provided with a fixing portion formed so as to protrude in the surface direction, and a continuous surface of the fixing portion is fixed to the housing.

  According to the present invention, by fixing the long side that is easily bent and deformed to the front frame with a continuous surface, it is possible to suppress the bending deformation of the panel module even if an impact due to falling is applied, and to prevent the panel from being damaged. Can do.

(Embodiment)
FIG. 1 is a perspective view showing the appearance of the plasma display device in the present embodiment. As shown in FIG. 1, the plasma display device 1 includes a display unit 2 that can display an image on a main plane of a substantially thin plate-like main body.

  FIG. 2 is an exploded perspective view of the plasma display device of the present embodiment. In FIG. 2, the side pointed by the arrow X is defined as “front side”, and the side pointed by the arrow Y is defined as “back side”. As shown in FIG. 2, the plasma display device includes a chassis member 10, a panel member 20, and a front housing 30. For convenience of explanation, the illustration of the rear case disposed on the rear side of the chassis member 10 is omitted. The chassis member 10 includes a chassis 11, drive circuit boards 12 a to 12 c, a fixing part 13, a fixing part 14, and a rib 15. The panel member 20 includes a panel 21, an adhesive sheet 22, a flexible wiring board 23, and a flexible wiring board 24.

  The chassis 11 is formed of a metal such as aluminum having a substantially rectangular shape and a thin plate shape, and supports the panel member 20 on the front housing 30. Moreover, the chassis 11 has a function as a heat sink by being formed of a material having excellent thermal conductivity. The chassis 11 includes driving circuit boards 12a to 12c and ribs 15 on the main plane on the back side. In addition, a fixed portion 13 is formed on the long side portion of the chassis 11 so as to protrude in the surface direction. A plurality of fixing portions 14 are formed on the short side portion of the chassis 11 so as to protrude in the surface direction.

  The fixed portion 13 is continuously formed over substantially the entire length of the long side portion of the chassis 11 to reduce the bending of the chassis 11. Further, the fixing portions 13 are respectively formed on a pair of opposed long side portions in the chassis 11. Further, the fixing portion 13 is formed so as to protrude in the surface direction from a region where the panel 21 is arranged in the chassis 11. In addition, in the fixing portion 13, a plurality of hole portions 13 a for inserting screws and a plurality of hole portions 13 b for inserting the flexible wiring board 23 are juxtaposed in the longitudinal direction of the chassis 11. The hole 13 b is formed at a position that matches the position of the flexible wiring board 23 disposed on the panel member 20. Moreover, the hole 13b is a substantially rectangular long hole in the present embodiment.

  A plurality of fixing portions 14 are formed at predetermined intervals on the short side portion of the chassis 11. The fixing portions 14 are respectively formed on a pair of opposing short sides in the chassis 11. Further, the fixing portion 14 is formed so as to protrude in the surface direction from the region where the panel 21 is arranged in the chassis 11. Moreover, the fixing | fixed part 14 has the hole 14a for inserting a screw | thread. Further, the interval between the fixed portions constituting the fixed portion 14 is at least an interval through which the flexible wiring board 24 can be inserted.

  The rib 15 is provided to suppress deformation of the chassis 11. The chassis 11 has a thin plate shape and is formed of an elastically deformable metal such as aluminum, and thus may be bent and deformed in the normal direction of the main plane. By providing the rib 15 as in the present embodiment, the bending deformation of the chassis 11 can be suppressed.

  The drive circuit boards 12a to 12c are provided with drive circuits for driving the panel 21 for display. The drive circuit board 12a is disposed in the vicinity of both ends in the long side direction on the main plane 11a. The drive circuit boards 12b are respectively arranged at both ends in the short side direction on the main plane 11a. The drive circuit board 12c is arranged near the approximate center of the main plane 11a.

  Panel 21 is formed of a glass substrate on which a plurality of discharge cells are formed. The panel 21 is attached to the front side of the chassis 11 with an adhesive sheet 22.

  The pressure-sensitive adhesive sheet 22 is disposed in almost the entire area of the main plane on the back side of the panel 21. Further, the adhesive sheet 22 has a heat radiating function for transferring heat generated from the panel 21 to the chassis 11 and a function for holding and fixing the panel member 20 to the chassis member 10.

  The flexible wiring boards 23 are arranged at regular intervals at the ends in the short side direction of the panel 21. Further, the flexible wiring board 23 is disposed so as to be inserted into the hole 13b formed in the chassis 11 and electrically connected to the drive circuit board 12b.

  The flexible wiring boards 24 are arranged at regular intervals at the ends in the long side direction of the panel 21. Further, the flexible wiring board 24 passes between the fixed portions 14 formed on the short side of the chassis 11 and is routed around the outer periphery of the chassis 11 so as to be electrically connected to the drive circuit board 12a. Is done.

  The front housing 30 includes an opening 31, and a front protection panel 33 made of glass is disposed so as to close the opening 31.

  FIG. 3 shows a cross-sectional view of the ZZ portion in FIG. 1 and is a cross-sectional view of the main part near the end of the ZZ portion in order to clearly illustrate the configuration.

  The panel module 40 includes a chassis member 10 and a panel member 20 that are adhered and fixed by an adhesive sheet 22. The panel module 40 is fixed to the front housing 30 by fastening and fixing the fixing portions 13 and 14 to the mounting bracket 32 provided on the front housing 30 with screws 34. In addition, since the hole 13a formed in the fixing part 13 on the long side is formed at a position farther from the center of the chassis 11 than the hole 13b, the hole 13a is formed at a position not affected by the position of the hole 13b. Design freedom. Further, the back cover 50 is fastened and fixed to the front housing 30 by screws 51. The flexible wiring board 23 is pulled out from the panel 21, inserted through the hole 13 b, and electrically connected to the drive circuit board 12 b disposed on the back side of the chassis 11. The flexible wiring board 24 is pulled out from the panel 21, passes between the fixed portions 14, and is electrically connected to the drive circuit board 12 a disposed on the back side of the chassis 11.

  The plasma display device 1 configured as described above has a panel module 40 (including the chassis 11, the panel 21, and the like from the state shown in FIG. 3 at the moment when an impact is caused when the front side falls down in a vertically downward posture. 2) tends to be displaced in the direction indicated by the arrow A (the normal direction of the main surface of the chassis 11) by its own weight. Along with this displacement, the long side portion of the chassis 11 tends to bend and deform. However, the fixing portion 13 is formed at the end of the long side portion of the chassis 11, and the continuous surface of the fixing portion 13 is the front housing 30. Since the rigidity is high due to being fixed to, the bending deformation of the chassis 11 can be suppressed.

  As described above, according to the present embodiment, since the fixing portion 13 is formed at the end of the long side portion of the chassis 11, the rigidity in the vicinity of the long side portion of the chassis 11 can be increased, It is possible to suppress the chassis 11 from being bent and deformed. Therefore, the bending deformation of the panel 21 adhered and fixed to the chassis 11 can be suppressed, and damage to the panel 21 can be suppressed.

  In addition, in this Embodiment, although it was set as the structure provided with the fixing | fixed part 13 in a pair of long side part which mutually opposes in the chassis 11, it is good also as a structure provided only in any one. For example, by adopting a configuration in which only the long side portion in the vicinity of a heavy object such as a power supply unit is arranged, it is possible to increase the rigidity focusing on a portion where a large impact energy is generated when the plasma display device 1 is overturned. It is possible to suppress breakage of the panel 21.

  Further, in the present embodiment, the fixing portion 14 is formed in pieces on the short side portion of the chassis 11, but may be formed continuously like the fixing portion 13. By setting it as such a structure, the rigidity of the short side part of the chassis 11 can also be raised and the damage of the panel 21 can be suppressed.

  In the present embodiment, the plasma display device is described as an example, but the present invention can also be applied to a liquid crystal display device or an organic EL display device.

  INDUSTRIAL APPLICABILITY The present invention is useful for a plasma display device that has excellent impact resistance such as tipping over and has a large screen size.

The perspective view which shows the whole structure of the plasma display apparatus in embodiment Exploded perspective view of plasma display device Sectional drawing of the principal part of the ZZ part in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plasma display apparatus 10 Chassis member 13 Fixed part 20 Panel member 21 Panel 30 Front case

Claims (1)

A panel capable of displaying images,
A substantially flat chassis supporting the panel;
A chassis to which the chassis is fixed,
The chassis is
In at least one side of the region supporting the panel, provided with a fixing portion formed to project in the surface direction,
The video display device, wherein a continuous surface of the fixing portion is fixed to the housing.

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