Plasma display device

Abstract

A base chassis has projection parts. A surrounding part of an image display surface of a plasma display panel (PDP) is in contact with a contact part formed around an opening part of a front case. The projection parts are fixed to a chassis fixation part of the front case. The projection parts each have an elastic structure part which elastically deforms in response to a pushing force to the display surface of the PDP. An external force from a rear case side is transmitted to the chassis fixation part only, preventing impact to the PDP. When the PDP directly receives an external force from the front case side, the elastic structure part can elastically deform to alleviate the impact to the PDP. This can alleviate stress to the PDP when applied an external force from the front surface and the rear surface of the cases.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The nature, principle, and utility of the invention will become more apparent from the following detailed description when read in conjunction with the accompanying drawings in which like parts are designated by identical reference numbers, in which:

FIG. 1 is an exploded perspective view showing a first embodiment of a plasma display device according to the present invention;

FIG. 2 is a plan view showing details of a base chassis shown in FIG. 1;

FIG. 3 is a cross-sectional view showing details of a main part of the base chassis shown in FIG. 2;

FIG. 4 is an exploded perspective view showing details of a main part of a PDP shown in FIG. 1;

FIG. 5 is a plan view showing electronic parts (circuit board) mounted on the base chassis;

FIG. 6 is a plan view showing a state that a reinforced plate is mounted on the base chassis;

FIG. 7 is a plan view showing details of a driver module shown in FIG. 5;

FIG. 8 is a cross-sectional view showing a main part of a PDP module in the first embodiment;

FIG. 9 is a cross-sectional view showing a main part of the plasma display device in the first embodiment;

FIG. 10 is a plan view showing details of a base chassis in a second embodiment of a plasma display device according to the present invention;

FIG. 11 is a cross-sectional view showing details of a main part of the base chassis shown in FIG. 10;

FIG. 12 is a cross-sectional view showing a main part of the plasma display device in the second embodiment;

FIG. 13 is a plan view showing another example of reinforced plates;

FIG. 14 is a cross-sectional view showing another example of a base chassis; and

FIG. 15 is a cross-sectional view showing another example of a base chassis.

Claims

1. A plasma display device, comprising: a plasma display panel;a base chassis having a chassis body in a plate form attached on a rear surface of said plasma display panel and a plurality of projection parts provided to project from a periphery of said chassis body;a front case having formed therein an opening part facing an image display surface of said plasma display panel, a contact part formed in a periphery of said opening part and brought in contact with a surrounding part of said display surface, a chassis fixation part provided outside a periphery of said plasma display panel to fix said projection parts of said base chassis; anda rear case connected to said front case to cover the rear surface of said plasma display panel, whereinsaid projection parts of said base chassis each comprise an elastic structure part which elastically deforms in response to a pushing force to said display surface of said plasma display panel.

2. The plasma display device according to claim 1, wherein: said projection parts each comprise a first bend part which is bent from said chassis body toward said rear case, a first extension part which is connected to said first bend part and extends in such a direction to depart from a center of said plasma display panel toward said rear case, a second bend part which is connected to an end of said first extension part and bent toward a center of said plasma display panel, and a second extension part which is connected to said second bend part and extends in a direction parallel to said display surface of said plasma display panel; andsaid elastic structure part is constituted of said first bend part, said first extension part and said second bend part.

3. The plasma display device according to claim 2, wherein: said projection parts are provided in correspondence with four corner parts of said plasma display panel, respectively; andbend lines of said first and second bend parts are formed in an extension direction of a diagonal line connecting two corner parts adjacent to a corresponding corner part.

4. The plasma display device according to claim 1, further comprising an electroconductive member arranged on said display surface of said plasma display panel, whereinsaid contact part is brought in contact with said display part via said electroconductive member;said chassis fixation part has electric nonconductivity; andsaid front case and said rear case have electroconductivity.

5. The plasma display device according to claim 1, further comprising a reinforced plate fixing at least a pair of projection parts to each other.

6. The plasma display device according to claim 5, further comprising a plurality of electronic parts which are attached on a surface of said base chassis along a surrounding part of said base chassis and have a radiation plate, the surface being on a side opposite to a plasma display panel side, whereinsaid reinforced plate is made of metal, and it is fixed to said radiation plate while fixed to said projection parts.

7. The plasma display device according to claim 6, wherein said reinforced plate is made of an aluminum alloy.

8. The plasma display device according to claim 6, wherein said reinforced plate is made of an iron alloy.

9. The plasma display device according to claim 5, wherein said reinforced plate is arranged in a direction of a long side of said plasma display panel and connects projection parts with each other, the projection parts being aligned in the direction of the long side thereof.

10. The plasma display device according to claim 1, further comprising: a plurality of electronic parts which are attached on a surface of said base chassis along a surrounding part of said base chassis and have a radiation plate, the surface being on a side opposite to a plasma display panel side; anda plurality of reinforced plates made of metal, fixing said projection parts and a predetermined number of radiation plates to each other, respectively, the radiation plates being aligned in one direction from said projection parts.

11. The plasma display device according to claim 1, wherein said chassis main body and said projection parts are formed of one member.

12. The plasma display device according to claim 1, wherein said projection parts are formed of members different from that of said chassis body.

13. The plasma display device according to claim 12, wherein said different members constituting said projection parts are made of an aluminum alloy.

14. The plasma display device according to claim 12, wherein said different members constituting said projection parts are made of an iron alloy.