JP2010060908A - Video display device - Google Patents

Abstract

Disclosed is a plasma display device in which panel cracks are unlikely to occur even when subjected to an impact when dropped.
A front panel 2 and a rear panel 4 are joined to a front panel 2 of the rear panel 4 and the display panel 1 bonded to each other with a predetermined gap between the edges of the main surface by a sealing member 3. A metal chassis 5 that is planarly bonded to the back surface of the surface, a front housing 7 having an opening 10 that defines an effective display area of the display panel 1, and a display panel 1 opposite to the front housing 7 Arranged between the rear case 9 disposed so as to face the front case 7 at a position, the side case 8 connecting the front case 7 and the rear case 9, and the opposite side case 8 And a front protective panel 13 disposed in the opening 10 of the front housing 7. The metal chassis 5 includes a back surface of the surface joined to the display panel 1, a telescopic support member 12 a that couples the frame 11, a front panel 2, and a buffer member 14 that couples the front protective panel 13.
[Selection] Figure 3

Description

  The present invention relates to a video display device such as a plasma display device, and more particularly to a video display device that prevents panel cracking due to an impact such as dropping.

  FIG. 9 is a cross-sectional view of a general plasma display device. The display panel 101 is joined to the metal chassis 105. An aluminum boss 112 that fixes the metal chassis 105 is coupled to the metal chassis 105. The boss 112 is fixed to the frame 111 arranged so as to connect the side housings 108. The housing 106 is formed on the opposite side of the front housing 107 with respect to the display housing 101 and the front housing 107 in which the opening 110 is formed so that light emitted from the effective display area of the display panel 101 is transmitted. And a side casing 108 that connects the front casing 107 and the rear casing 109. A front protective panel 113 is disposed on the front casing 107.

  As described above, the metal chassis 105 bonded to the display panel 101 is fixed to the housing 106 by the boss 112 and the frame 111. For this reason, there is a problem that an impact such as a drop during transportation is mainly transmitted to the display panel 101 and the panel is cracked. When the panel breaks, the display panel 101 does not emit light.

  FIG. 10 is a cross-sectional view showing a state of the display panel to which the impact is transmitted. The display panel 101 receives an impact and is displaced in the dropping direction by dropping, but the portion fixed by the boss 112 cannot be displaced. Therefore, the portion fixed by the boss 112 becomes a node, and the display panel 101 undulates, causing panel cracks.

A video display device for solving this problem has been proposed (see, for example, Patent Document 1). FIG. 11 is a cross-sectional view showing a configuration of a video display device for preventing panel cracking. There is no frame 111, and a spring 121 connects the metal chassis 105 and the back housing 109 in place of the aluminum boss 112. With this configuration, it is possible to reduce an impact at the time of dropping on the display panel 101. Further, since the display panel 101 at the joint portion can be displaced when dropped by the extension of the spring 121, the waviness of the display panel 101 is reduced. By these, panel cracking can be prevented.
JP 2000-122565 A

  However, in the above configuration, the display panel 101 may collide with the front protective panel 113 due to an impact at the time of dropping, and there is a risk of panel cracking. Further, the display panel 101 vibrates for a long time due to an impact at the time of dropping, and there is a possibility that panel cracking may occur due to stress generated during the vibration.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a video display device that is less likely to cause panel cracking even when subjected to an impact when dropped.

  The first video display device of the present invention has a front panel and a back panel, the display panel bonded with the main surface of the front panel and the main surface of the back panel facing each other, and the back panel A metal chassis planarly bonded to the back surface of the surface bonded to the front panel, a front case having an opening that defines an effective display area of the display panel, and the front case with respect to the display panel. A rear case disposed to face the front case at a position opposite to the body, a side case that couples the front case and the rear case, and the opposite side case A frame disposed therebetween, and a front protective panel disposed in the opening of the front housing. In order to solve the above-described problems, a back surface of a surface of the metal chassis joined to the display panel, a telescopic support member that couples the frame, the front housing, the front panel, or the metal chassis. The effective display area is an area in which an image is displayed from the display panel, wherein the effective display area includes a buffer member that joins a portion extending from a joint portion with the display panel. is there.

  The second video display device of the present invention has a front panel and a back panel, the display panel bonded with the main surface of the front panel and the main surface of the back panel facing each other, and the back panel A metal chassis planarly bonded to the back surface of the surface bonded to the front panel, a front case having an opening that defines an effective display area of the display panel, and the front case with respect to the display panel. A rear case disposed to face the front case at a position opposite to the body, a side case that couples the front case and the rear case, and the opposite side case A frame disposed therebetween, and a front protective panel disposed in the opening of the front housing. In order to solve the above-mentioned problems, a back surface of the surface of the metal chassis joined to the display panel, a telescopic support member for coupling the frame, the front protection panel, the front panel or the metal chassis. And a buffer member for coupling a portion extending from a joint portion with the display panel.

  A third video display device of the present invention has a front panel and a back panel, and is bonded to the display panel in a state where the main surface of the front panel and the main surface of the back panel are opposed to each other, and the back panel A metal chassis planarly bonded to the back surface of the surface bonded to the front panel, a front case having an opening that defines an effective display area of the display panel, and the front case with respect to the display panel. A rear housing disposed to face the front housing at a position opposite to the body, a side housing coupling the front housing and the rear housing, and the opening of the front housing And a front protective panel disposed on the front panel. In order to solve the above-mentioned problem, the back surface of the surface joined to the display panel of the metal chassis, a telescopic support member that couples the back housing, the front housing, the front panel or the A shock-absorbing member that joins a portion of the metal chassis that extends from the joint with the display panel is provided.

  A fourth video display device of the present invention includes a front panel and a rear panel, and a display panel bonded with the main surface of the front panel and the main surface of the rear panel facing each other; and the rear panel A metal chassis planarly bonded to the back surface of the surface bonded to the front panel, a front case having an opening that defines an effective display area of the display panel, and the front case with respect to the display panel. A rear housing disposed to face the front housing at a position opposite to the body, a side housing coupling the front housing and the rear housing, and the opening of the front housing And a front protective panel disposed on the front panel. In order to solve the above-described problem, a back surface of a surface of the metal chassis joined to the display panel, a stretchable support member that couples the back housing, the front protection panel, the front panel, or the A shock-absorbing member that joins a portion of the metal chassis that extends from the joint with the display panel is provided.

  A fifth image display device of the present invention has a front panel and a back panel, the display panel bonded with the main surface of the front panel and the main surface of the back panel facing each other, and the back panel A metal chassis planarly bonded to the back surface of the surface bonded to the front panel, a front case having an opening that defines an effective display area of the display panel, and the front case with respect to the display panel. A rear case disposed to face the front case at a position opposite to the body, a side case that couples the front case and the rear case, and the opposite side case And a frame disposed therebetween. In order to solve the above-described problems, a back surface of a surface of the metal chassis joined to the display panel, a telescopic support member that couples the frame, the front housing, the front panel, or the metal chassis. And a buffer member for coupling a portion extending from a joint portion with the display panel.

  A sixth image display device of the present invention has a front panel and a back panel, the display panel bonded with the main surface of the front panel and the main surface of the back panel facing each other, and the back panel A metal chassis planarly bonded to the back surface of the surface bonded to the front panel, a front case having an opening that defines an effective display area of the display panel, and the front case with respect to the display panel. A rear housing disposed to face the front housing at a position opposite to the body, and a side housing that couples the front housing and the rear housing. A back surface of a surface of the metal chassis joined to the display panel, a telescopic support member that joins the back housing, the front housing, and the front panel or the display panel in the metal chassis. A shock-absorbing member that joins a portion extending from the joint is provided.

  According to the present invention, it is possible to provide a video display device in which panel breakage is unlikely to occur due to an impact at the time of dropping by providing a cushioning material for reducing vibration between the front protective panel and the display panel.

  The video display device of the present invention can take various modes based on the above-described configuration. That is, the video display device can be configured to include a fixing member that fixes the metal chassis to the housing so as to prevent displacement in a direction parallel to the main surface of the metal chassis. With this configuration, the vibration direction of the display panel can be limited to a direction perpendicular to the main surface of the metal chassis. Therefore, the display panel panel vibrates in a direction other than the direction perpendicular to the main surface of the metal chassis. Cracking can be prevented.

  In the second video display device, a reinforcing plate can be arranged between the support member and the rear housing. In this configuration, the reinforcing plate can increase the rigidity in the vicinity of the fixed portion of the rear housing, and can prevent deformation of the rear housing.

(Embodiment 1)
FIG. 1 is a perspective view showing a configuration of a video display apparatus according to Embodiment 1 of the present invention. In the present embodiment, a plasma display device will be described as an example of a video display device. FIG. 2 is a perspective view of the plasma display device shown in FIG. 1 as seen from the back side in a state in which the back housing is removed. The support member 12a is disposed so as to support the metal chassis 5 at four points.

  FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1 (illustration of the pedestal portion is omitted). FIG. 4 is an enlarged view of a region where the buffer member 4 in FIG. 3 is disposed. In FIG. 3, each component of the display panel 1 is omitted. For the sake of explanation, the left side in FIG. 3 is referred to as the front, and the right side is referred to as the rear.

  As shown in FIG. 3, the display panel 1 is bonded to the metal chassis 5. As shown in FIG. 4, the display panel 1 is configured by bonding a front panel 2 and a back panel 4 to a sealing member 3. The sealing member 3 is disposed at the edge of each main surface of the front panel 2 and the back panel 4, and a gap is generated between the front panel 2 and the back panel 4 by the thickness of the sealing member 3. . As the front panel 2 and the back panel 4, a glass substrate or the like is used. A rare gas such as Ne or Xe is injected into a sealed space formed by the sealing member 3 between the front panel 2 and the back panel 4. Light is emitted by applying an electric field to the sealed space.

  The back surface of the back panel 4 that is bonded to the front panel 2 is bonded to the metal chassis 5 in a planar shape by a double-sided tape (not shown) having high thermal conductivity. The metal chassis 5 is formed of aluminum or the like that has good mechanical rigidity and thermal conductivity. An electric circuit board (not shown) is attached to the back surface of the metal chassis 5 where the display panel 1 is joined.

  The housing 6 includes a front housing 7 disposed substantially parallel to the display panel 1 in front of the display panel 1, a rear housing 9 disposed behind the display panel 1, and a front housing 7. A side housing 8 is coupled to the rear housing 9. An opening 10 is formed in the front housing 7 so that light emitted from the effective display area of the display panel 1 is transmitted.

  As shown in FIG. 2, the frame 11 is disposed behind the display panel 1. Both ends of the frame 11 are fixed to opposite side housings 8. As shown in FIG. 4, one end of the support member 12 a is fixed to the back surface of the surface of the metal chassis 5 on which the display panel 1 is fixed, and the other end is fixed to the frame 11. The support member 12a is formed of an elastic body such as a coil spring or a cylindrical rubber, and is extendable in the front-rear direction.

  The front protective panel 13 is formed of tempered glass or plastic, and is disposed inside the front casing 7 so as to close the opening 10.

  The buffer member 14 is disposed between a portion outside the effective display area of the display panel 1 and the front protective panel 13, and prevents dust and the like from entering between the front protective panel 13 and the display panel 1. The buffer member 14 is an elastic body such as urethane foam.

  Next, the state of the plasma display device that has received an impact when the plasma display device falls with the front facing downward will be described. Due to the drop impact, the metal chassis 5 to which the display panel 1 is bonded vibrates in the front-rear direction. As the support member 12a expands and contracts in the drop direction, the metal chassis 5 is displaced in the drop direction without being restrained by the support member 12a. For this reason, the corrugation of the metal chassis 5 is reduced. On the other hand, the vibration of the metal chassis 5 generated at the time of the drop impact is attenuated by the buffer member 14, so that the vibration of the metal chassis 5 converges in a short time.

  As described above, the plasma display device according to the present embodiment can reduce deformation of the metal chassis 3 and the display panel 1 because the metal chassis 5 does not wave when subjected to a drop impact. Panel cracking of the panel 1 can be prevented.

  Moreover, by providing the buffer member 14, the vibration of the display panel 1 generated when an impact is applied to the plasma display device can be attenuated at an early stage. As a result, panel cracks due to distortion due to vibration of the display panel 1 can be prevented.

  Further, by disposing the buffer member 14 between the front protective panel 13 and the front panel 2, it is possible to prevent the front panel 2 from colliding with the front protective panel 13 and causing panel cracks.

  FIG. 5 is a cross-sectional view showing another configuration of the plasma display device shown in FIG. This plasma display device has a configuration in which a fixing member 15 is disposed between the side surface of the metal chassis 5 and the side housing 8 in the plasma display device shown in FIG.

  Note that the fixing member 15 can be formed of a rigid body or an elastic body. Further, a rail (not shown) is formed on the side housing 8 in the front-rear direction, and the fixing member 15 can be configured to be movable on the rail. Thereby, it can also be set as the structure which moves according to the vibration of the metal chassis 5. FIG.

  With this configuration, in addition to the effects of the plasma display device having the configuration shown in FIG. 3, the vibration direction of the display panel 1 is limited to the front-rear direction, and it is possible to prevent panel cracking of the display panel 1 due to vibrations in other directions. it can. Further, the display panel 1 can be stably disposed at a predetermined position in the housing.

(Embodiment 2)
FIG. 6 is a cross-sectional view showing the configuration of the plasma display device according to Embodiment 2 of the present invention. The plasma display device according to the present embodiment is a support member that joins the metal chassis 5 and the back housing 9 to the plasma display device according to the first embodiment instead of the support member 12a and the frame 11. The difference is that 12b is arranged. Other configurations are the same as those of the plasma display device according to the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted.

  The support member 12 b is disposed between the metal chassis 5 and the back housing 9. The support member 12b is formed of an elastic body such as a coil spring or a cylindrical rubber, and is extendable in the front-rear direction.

  With the above configuration, when the plasma display apparatus receives a drop impact, the support member 12b expands and contracts in the drop direction, so that the metal chassis 5 is displaced in the drop direction without being constrained by the support member 12b. For this reason, deformations such as undulation of the metal chassis 3 and the display panel 1 can be reduced, and panel cracks of the display panel 1 can be prevented.

  Furthermore, by providing the buffer member 14, the vibration of the display panel 1 generated when an impact is applied to the plasma display device can be attenuated at an early stage. As a result, it is possible to prevent panel cracks caused by distortion due to vibration of the display panel 1.

  Further, the buffer member 14 is located between the front protective panel 13 and the front panel 2, and a gap is generated between the front protective panel 13 and the front panel 2. Due to this gap, it is possible to prevent the front panel 2 and the front protective panel 13 from colliding with each other and causing a panel crack when an impact is applied to the plasma display device.

  FIG. 7 is a cross-sectional view showing another configuration of the plasma display device according to the present exemplary embodiment. The reinforcing plate 16 is disposed between the support member 12 b and the back housing 9. Other configurations are the same as those of the plasma display device shown in FIG.

  In the case where the reinforcing plate 16 is not provided and the rear housing 9 is an iron thin plate, the drop impact is applied from the support member 12b near the fixing portion of the support member 12b in the rear housing 9 due to the drop impact, and the rear housing 9 is There is a possibility of plastic deformation. According to the configuration in which the reinforcing plate 16 is arranged, the rigidity in the vicinity of the fixed portion can be increased, and the force applied by making the reinforcing plate 16 larger than the fixed portion can be dispersed. For this reason, it becomes possible to prevent the deformation | transformation of the back housing | casing 9, having the panel crack prevention effect equivalent to the structure of FIG.

  FIG. 8 is a sectional view showing still another configuration of the plasma display device according to the present embodiment. This plasma display device has a configuration in which a fixing member 15 is formed between the side surface of the metal chassis 5 and the side housing 8 in the plasma display device shown in FIG. The fixing member 15 prevents the metal chassis 5 from being displaced and vibrated in directions other than the front-rear direction. The fixing member 15 may be a rigid body or an elastic body.

  With this configuration, in addition to the effects of the plasma display device having the configuration of FIG. 6, the vibration direction of the display panel 1 is limited to the front-rear direction, and the panel cracks of the display panel 1 due to vibrations other than the front-rear direction can be prevented. . Further, the display panel 1 can be stably disposed at a predetermined position in the housing.

  In the first and second embodiments, the buffer member 14 extends from the joint portion of the display panel 1 on the joint surface side between the inside of the front protective panel 13 or the front housing 7 and the display panel 1 of the metal chassis 5. The above-described effects can be obtained even if it is disposed between the formed portion or between the front housing 7 and the display panel 1.

  In the first and second embodiments, the front protective panel 13 is not provided, and the buffer member 14 can be arranged between the front housing 7 and the display panel 1. With this configuration, the video display device can be formed thin.

  Alternatively, in the first and second embodiments, the front protective panel 13 is not provided, and the buffer member 14 extends from the joint portion of the display panel 1 on the joint surface side between the front housing 7 and the display panel 1 of the metal chassis 5. It is also possible to adopt a configuration arranged between the two parts. Even in this configuration, the video display device can be formed thin.

  In the first and second embodiments, the plasma display device has been described. However, if the display panel is bonded to a metal chassis, the above-described configuration can be used even for a video display device such as a liquid crystal display device. Panel cracks can be prevented.

  Although the case where the side housing 8 is formed independently of the front housing 7 and the back housing 9 is shown, it may be formed integrally with the front housing 7 or the back housing 9.

  INDUSTRIAL APPLICABILITY The present invention can prevent panel breakage due to dropping during transportation, and can be used as a video display device such as a plasma display device.

The perspective view which shows the structure of the plasma display apparatus which concerns on Embodiment 1 of this invention. The perspective view from the back surface of the plasma display apparatus concerning Embodiment 1 Sectional drawing of the plasma display apparatus concerning Embodiment 1 Sectional enlarged view of the plasma display device according to the first embodiment Sectional drawing which shows another structure of the plasma display apparatus which concerns on Embodiment 1 of this invention Sectional drawing which shows the structure of the plasma display apparatus which concerns on Embodiment 2 of this invention. Sectional drawing which shows another structure of the plasma display apparatus which concerns on Embodiment 2 of this invention. Sectional drawing which shows another structure of the plasma display apparatus which concerns on Embodiment 2 of this invention. Sectional drawing which shows the structure of the conventional plasma display apparatus Sectional drawing which shows the state which the conventional plasma display apparatus received the impact Sectional drawing which shows the structure of another conventional plasma display apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display panel 2 Front panel 3 Sealing member 4 Back panel 5 Metal chassis 6 Case 7 Front case 8 Side case 9 Rear case 10 Opening part 11 Frame 12a, 12b Support member 13 Front surface protection panel 14 Buffering member 15 Fixed Member 16 Reinforcing plate

Claims (8)

A display panel having a front panel and a back panel, wherein the main surface of the front panel and the main surface of the back panel are opposed to each other;
A metal chassis that is planarly bonded to the back surface of the surface bonded to the front panel in the back panel;
A front housing having an opening for defining an effective display area of the display panel;
A rear housing disposed to face the front housing at a position opposite to the front housing with respect to the display panel;
A side housing that joins the front housing and the rear housing;
A frame disposed between the opposing side casings;
In a video display device comprising a front protective panel disposed in the opening of the front housing,
A telescopic support member that joins the back surface of the surface joined to the display panel of the metal chassis and the frame;
An image display device comprising: the front housing; and a buffer member that couples a portion of the front panel or the metal chassis that extends from a joint between the display panel and the display panel. A display panel having a front panel and a back panel, wherein the main surface of the front panel and the main surface of the back panel are opposed to each other;
A metal chassis that is planarly bonded to the back surface of the surface bonded to the front panel in the back panel;
A front housing having an opening for defining an effective display area of the display panel;
A rear housing disposed to face the front housing at a position opposite to the front housing with respect to the display panel;
A side housing that joins the front housing and the rear housing;
A frame disposed between the opposing side casings;
In a video display device comprising a front protective panel disposed in the opening of the front housing,
A telescopic support member that joins the back surface of the surface joined to the display panel of the metal chassis and the frame;
An image display device comprising: the front protective panel; and a buffer member that couples the front panel or a portion of the metal chassis that extends from a joint portion with the display panel. A display panel having a front panel and a back panel, wherein the main surface of the front panel and the main surface of the back panel are opposed to each other;
A metal chassis that is planarly bonded to the back surface of the surface bonded to the front panel in the back panel;
A front housing having an opening for defining an effective display area of the display panel;
A rear housing disposed to face the front housing at a position opposite to the front housing with respect to the display panel;
A side housing that joins the front housing and the rear housing;
In a video display device comprising a front protective panel disposed in the opening of the front housing,
An elastic support member that joins the back surface of the surface of the metal chassis joined to the display panel and the back housing;
An image display device, comprising: the front housing; and a buffer member that couples the front panel or a portion of the metal chassis that extends from a joint between the display panel and the display panel. A display panel having a front panel and a back panel, wherein the main surface of the front panel and the main surface of the back panel are opposed to each other;
A metal chassis that is planarly bonded to the back surface of the surface bonded to the front panel in the back panel;
A front housing having an opening for defining an effective display area of the display panel;
A rear housing disposed to face the front housing at a position opposite to the front housing with respect to the display panel;
A side housing that joins the front housing and the rear housing;
In a video display device comprising a front protective panel disposed in the opening of the front housing,
An elastic support member that joins the back surface of the surface of the metal chassis joined to the display panel and the back housing;
An image display device comprising: the front protective panel; and a buffer member that couples the front panel or a portion of the metal chassis that extends from a joint portion with the display panel. A display panel having a front panel and a back panel, wherein the main surface of the front panel and the main surface of the back panel are opposed to each other;
A metal chassis that is planarly bonded to the back surface of the surface bonded to the front panel in the back panel;
A front housing having an opening for defining an effective display area of the display panel;
A rear housing disposed to face the front housing at a position opposite to the front housing with respect to the display panel;
A side housing that joins the front housing and the rear housing;
In a video display device comprising a frame disposed between the opposing side housings,
A telescopic support member that joins the back surface of the surface joined to the display panel of the metal chassis and the frame;
An image display device, comprising: the front housing; and a buffer member that couples the front panel or a portion of the metal chassis that extends from a joint between the display panel and the display panel. A display panel having a front panel and a back panel, wherein the main surface of the front panel and the main surface of the back panel are opposed to each other;
A metal chassis that is planarly bonded to the back surface of the surface bonded to the front panel in the back panel;
A front housing having an opening for defining an effective display area of the display panel;
A rear housing disposed to face the front housing at a position opposite to the front housing with respect to the display panel;
In a video display device comprising a side case that joins the front case and the back case,
An elastic support member that joins the back surface of the surface of the metal chassis joined to the display panel and the back housing;
An image display device, comprising: the front housing; and a buffer member that couples the front panel or a portion of the metal chassis that extends from a joint between the display panel and the display panel.   The video display device according to claim 3, 4 or 6, wherein a reinforcing plate is disposed between the support member and the rear housing.   The video display device according to claim 1, further comprising: a fixing member that fixes the metal chassis to the housing so as to prevent displacement in a direction parallel to a main surface of the metal chassis. .

Images