JP4356513B2 - Video display device - Google Patents

Description

  The present invention relates to a video display device.

Conventionally, a plasma display device can be obtained at low cost by improving a shield structure as a structure constituting a casing. (See Patent Document 1)
FIG. 15 is a three-side view of a plasma display television, FIG. 15 (a) is a top view, FIG. 15 (b) is a side view, and FIG. 15 (c) is a rear view. FIG. 16 shows a conventional structure of a conventional plasma plasma display TV. FIG. 16 (a) is a component mounting view seen from the side, FIG. 16 (b) is a side view, and FIG. 16 (c) is seen from the top. FIG. 16D is a top view, and FIG. 16E is a rear view. FIG. 17 shows an enlarged view of the upper end point as seen from the side of a conventional plasma plasma display television. In FIG. 17, a metal base 202 in which a light emitting panel 201 is arranged on the front side and a circuit board 203 for applying a signal to the light emitting panel 201 for display is arranged on the back side, and a circuit board of the base 202 The rear cover 103 made of metal is disposed so as to cover the rear surface side where the rear cover 203 is disposed, and the front frame 105 that forms a casing together with the rear cover 103 is provided. A boss portion 1101 is provided on the outer periphery of the base 202. By attaching the rear cover 104 to the boss portion 1101 in electrical contact, the outer peripheral portion of the base 202 and the outer peripheral portion of the rear cover 103 are electrically and mechanically connected to form a shield structure. Is.
JP 2004-69888 A

  However, there is a problem that the plasma display device becomes complicated due to the limitation of the freedom of design of the plasma display due to the shield structure and the decrease in rigidity of the plasma display device due to the increase in size, the increase of the fastening part due to screws etc. and the increase of shield parts There is.

The video display device of the first invention of the present application is a front panel disposed on the front surface of the light emitting panel and having a conductive layer, and a first U-shaped shield member disposed on the upper and lower ends of the front panel, A second shield member disposed at left and right ends of the front panel, the front panel being inserted into a U-shape of the first shield member , and the first shield from the rear side of the front panel. A groove unit at the end of the member is held by a claw at the end of the second shield member, and the front panel, the first shield member, and the second shield member are electrically connected to each other. Is.

In addition to the video display device of the first invention of the present application, the video display device of the second invention of the present application is such that the inside of the U-shape of the first shield member is electrically connected to the surface of the front panel, A second shield member is electrically connected to the back surface of the front panel while being pressed against the first shield member.

The video display device of the third invention of the present application includes a base for holding the light emitting panel in addition to the video display device of the first invention of the present application, and the beam-like structure portion provided at the upper end portion of the base includes the first This mounts the crawl structure provided on the shield member.

According to a fourth aspect of the present invention, in addition to the first aspect of the present invention, the video display device includes a rear cover that surrounds the rear surface of the base and the bracket, and a third screw that fastens the rear cover and the base with screws. The shield member is provided.

A video display device according to a fifth invention of the present application includes a front cover surrounding the front surface of the base and the light emitting panel in addition to the video display device of the fourth invention of the present application, wherein the front cover includes the rear cover, the first cover. And a front cover claw portion that is elastically deformed and is in close contact with any one of the shield member, the second shield member, and the third shield member.

  Because it is not restricted by the separate fastening member that was generated by the conventional fastening structure with another fastening member, it holds the front glass that transmits the image and blocks the electromagnetic wave to a size larger than the light-emitting panel that projects the image. The metal frame to be expanded can be expanded, and the degree of freedom of design is increased. In addition, even when the shield is enlarged, the rigidity of the video display device is not impaired. In addition, since the use of fastening parts such as screws is reduced, the video display device can be simplified. And the influence of electromagnetic waves can be reduced.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 shows three views of a plasma display television equipped with a shield unit and a circuit unit in the present embodiment. 1A is a top view, FIG. 1B is a side view, and FIG. 1C is a front view.

  FIG. 2 shows the configuration of a plasma display television equipped with the circuit unit of the present embodiment. 2 (a) is a component mounting view as viewed from the top, FIG. 2 (b) is a top view, FIG. 2 (c) is a rear view, FIG. 2 (d) is a side view, and FIG. FIG. In FIG. 2, the light emitting panel 201 is attached to the base 202 with a thermally conductive double-sided drape, the circuit board 203 and the bracket 204 are mechanically and electrically attached to the base 202 with screws 205, and a convex portion is provided inside the bracket 204. The base 207 is inserted and attached, and the circuit unit 206 is configured to be electrically integrated and to be independent.

  According to such a configuration, the rigidity is not impaired even when the shield is enlarged.

  However, since this configuration alone generates electromagnetic waves from the light emitting panel 201 and the circuit board 203, a shield is necessary. Hereinafter, the configuration of the shield will be described.

  FIG. 3 shows the appearance of the front panel in the present embodiment. FIG. 3 (a) is an enlarged view of the front glass and the edge of the front glass when viewed from the upper surface, FIG. 3 (b) is an enlarged view of the upper and lower ends of the front glass and the front glass when viewed from the side surface, FIG. 3C is a front view of the front glass. In FIG. 3, a conductive vapor deposition layer 301 is provided on the surface of the front panel 102, and an end face treatment is performed with the conductive tape 302, thereby providing a shielding effect by conducting in the range of the conductive tape 302.

  FIG. 4 shows the configuration of the shield unit of the present invention. 4 (a) is a side view, FIG. 4 (b) is a side view, FIG. 4 (c) is a cross-sectional view when the shield unit is cut in a vertical direction, and FIG. 4 (e) is a top view, and FIG. 4 (f) is a rear view. In FIG. 4, a shield (upper) 403 and a shield (lower) 405 are inserted into the front panel 102 and pressed by the shield (lateral) 401 from the rear side, and the claw 402 is elastically fixed to the grooves 404 and 406. The front panel 102, the shield (lateral) 401, the shield (upper) 403, and the shield (lower) 405 are electrically connected to each other so that the shield unit is integrated continuously.

  According to the above configuration, the degree of freedom in design can be increased without losing rigidity even when the shield is enlarged. Further, the shield (lateral) 401, the shield (upper) 403, and the shield (lower) 405 of the present invention do not need to be provided with a screw fastening shape, and the shield unit can be simplified. When the claw-shaped portion 402 and the fixing groove portions 404 and 406 are arranged in multiple rows at a predetermined interval, the electrical ground interval can be reduced, the electrical stability as a shield unit can be achieved, and the electromagnetic wave The influence can be reduced.

  In addition, the shape of the nail | claw part 402 and the groove parts 404 and 406 is good also as the above and other arbitrary structures. The shapes of the shield (lateral) 401, the shield (upper) 403, and the shield (lower) 405 may be any other configuration as described above. Further, the attachment position of the shield (horizontal) 401 to the shield (upper) 403 and the shield (lower) 405 may be any position other than the above.

(Embodiment 2)
FIG. 5 shows the configuration of the plasma display television when the shield unit is assembled in the present embodiment. 5 (a) is a component mounting view seen from the top, FIG. 5 (b) is a top view, FIG. 5 (c) is a rear view, FIG. 5 (d) is a side view, and FIG. 5 (e) is a side view. FIG. Also, the same parts as those in the first embodiment are denoted by the same reference numerals, and the same description is omitted.

  In the shield (upper) 403 in this embodiment, a plurality of claw-shaped portions 504 provided inside the solid are inserted and attached to the fixing beam portion 503 of the base 202, and the boss of the shield (lower) 405 is secured with a screw 205. The part 505 is fastened.

  With the above configuration, in addition to the effects of the first embodiment, the shield unit 502 of the present invention can be fixed at an arbitrary position, and the plasma display apparatus can be simplified.

  In addition, the shape of the nail | claw shape part 504 and the beam part 503 for fixation is good also as the above and other arbitrary structures. Moreover, the attachment position by the nail | claw-shaped part 504 to the beam part 503 for fixation is good also as arbitrary positions other than the above.

(Embodiment 3)
FIG. 6 shows the configuration of the plasma display television when the shield unit in the present embodiment is assembled. 6 (a) is a component mounting view seen from the top, FIG. 6 (b) is a top view, FIG. 6 (c) is a rear view, FIG. 6 (d) is a side view, and FIG. 6 (e) is a side view. FIG. 6F is a cross-sectional view seen from the lower surface. FIG. 7 shows the configuration of the shield unit in the present embodiment. FIG. 7A is a side view of the shield unit, and FIG. 7B is a component mounting view as seen from the side of the shield unit. The same parts as those in Embodiments 1 and 2 are denoted by the same reference numerals, and the same description is omitted.

  In this embodiment, the rear cover 103 is fixed to the boss 602 provided on the shield (upper) 403 through the base 202 with the screw 205, and the boss 601 provided on the bracket 204 and the shield (lower) 405. The rear cover 103 and the shield (bottom) 603 are fastened to the boss portion 505 provided on the boss portion 505 with screws 205.

  The above configuration ensures electrical conduction between the shields of the circuit unit 206 and shield unit 502 of the present invention, the rear cover 103 and the shield (bottom) 603, and minimizes fastening by screws. Further, the boss portion 601 is provided on the bracket 204, and the boss portion 505 and the shield (bottom) 603 provided on the rear cover 103 or the shield (lower) 405 are fastened with screws, so that the load of the plasma display device that is most loaded during transportation is increased. Increase the strength of the bottom.

  Note that the attachment position of the screw 205 to the shield (upper) 403, the bracket 204, and the shield (lower) 405 may be any position other than the above.

(Embodiment 4)
FIG. 8 shows the configuration of the plasma display television when the front cover is attached to the shield unit in the present embodiment. 8 (a) is a component mounting view seen from the side, FIG. 8 (b) is a side view, FIG. 8 (c) is a component mounting view seen from the top, FIG. 8 (d) is a top view, and FIG. ) Is a top view, and FIG. 8F is a front view. The same parts as those in Embodiments 1, 2, and 3 are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  The claw portion 801 provided on the front cover 101 is configured to be elastically fixed to the rear cover 103.

  With the above configuration, the shield unit and the front cover are not subjected to the design restriction due to the fastening boss portion that is generated by the joint fastening structure with the fastening boss portion provided on the front cover 101 of the related art (see FIGS. 15 and 16). 101 can be designed independently, and the design change can be dealt with if only the front cover 101 is newly created, which greatly reduces the development cost and period. Further, since it is not limited by the separate fastening member that has been generated by the conventional fastening structure with the separate fastening member (see FIGS. 15 and 16), the image is transmitted to a size larger than that of the light-emitting panel that displays the video. The shield (lateral) 403, shield (top) 403, shield (bottom) 405, shield (bottom) 603, etc. constituting the metallic frame that holds the front glass that blocks the electromagnetic wave can be expanded, and the opening range of the front cover To expand design freedom.

  The position where the claw-shaped portion 801 is elastically fixed is an arbitrary position such as the shield (horizontal) 403, the shield (upper) 403, the shield (lower) 405, and the shield (bottom) 603, in addition to the position of the rear cover 103. As good. Moreover, the attachment shape to the rear cover 103 of the nail | claw-shaped part 801 is good also as arbitrary shapes other than the above.

(Embodiment 5)
FIG. 9 shows the configuration of the plasma display television when the shield unit in the present embodiment is enlarged. 9A is a top view, FIG. 9B is a side view, and FIG. 9C is a front view. The same parts as those in Embodiments 1, 2, 3, and 4 are denoted by the same reference numerals, and the same description is omitted as appropriate.

  In the present embodiment, the structure of the plasma display television due to the expansion of the shield unit is reduced by increasing the size of the bracket like a bracket (large) 901.

  With the above configuration, the rigidity of the plasma display device is not impaired even when the shield is enlarged.

  FIG. 10 shows the appearance of the front panel in the present embodiment. FIG. 10 (a) is an enlarged view of the front glass and the edge of the front glass when viewed from above, FIG. 10 (b) is an enlarged view of the upper and lower ends of the front glass and the front glass when viewed from the side, FIG. 10C is a front view. By providing the conductive vapor deposition layer 301 on the surface of the front panel 102 and conducting in the range of the conductive vapor deposition layer 301, the influence of electromagnetic waves can be reduced.

  FIG. 11 shows the configuration of the shield unit including the front cover of the present embodiment. 11 (a) is a side view of components, FIG. 11 (b) is a side view, FIG. 11 (c) is a top view, FIG. 11 (d) is a top view, and FIG. 11 (e) is a rear view. is there. In addition, a mold slide part 1102 is provided on the front side of the fastening boss part 1101 with the circuit unit provided on the front cover 101, the front glass 102 and the shield (upper) 403 are inserted and elastically fixed, and the front cover 101 is further fixed. The front panel 102, the shield (lateral) 401, the shield (upper) 403, and the shield (upper) 403 are elastically fixed to the shield (lateral) 403, the shield (upper) 403, and the shield (lower) 405. Bottom) 405 is made conductive, and the shield unit is integrated continuously.

  With the above configuration, the front cover 101, the shield (lateral) 401, the shield (upper) 403, and the shield (lower) 405 do not need to be provided with screw fastening shapes, and the shield unit can be simplified. When the claw-shaped portion 801 and the mold slide portion 1102 are arranged in multiple rows at predetermined intervals, the electrical grounding interval can be made small, the electrical stability as a shield unit can be achieved, and the shielding effect can be achieved. And the plasma display device can be simplified.

  In addition, the insertion position of the boss | hub part 1101, the metal mold | die slide part 1102, the front glass 102, and the shield (upper) 403 is good also as arbitrary positions other than the said position. Moreover, the insertion shape of the boss | hub part 1101, the metal mold | die slide part 1102, the front glass 102, and the shield (upper) 403 is good also as arbitrary shapes other than the said shape. In addition to the positions of the shield (lateral) 403, the shield (upper) 403, and the shield (lower) 405, the position where the claw-shaped portion 801 is elastically fixed may be any position. Further, the attachment shape of the claw-shaped portion 801 to the shield (lateral) 403, shield (upper) 403, and shield (lower) 405 may be any shape other than the above.

(Embodiment 6)
12 and 13 show the configuration of the plasma display television when the shield unit is assembled in the present embodiment. 12 (a) is a component mounting view as seen from the top, FIG. 12 (b) is a top view, FIG. 12 (c) is a rear view, FIG. 12 (d) is a side view, and FIG. FIG. FIG. 13 (a) is a component mounting view seen from the top, FIG. 13 (b) is a top view, FIG. 13 (c) is a rear view, FIG. 13 (d) is a side view, and FIG. Fig. 13 (f) is a cross-sectional view seen from above. FIG. 14 shows the configuration of the shield unit in the present embodiment. FIG. 14A is a side view of the shield unit, and FIG. 14B is a component mounting view as seen from the side of the shield unit. The same parts as those in Embodiments 1, 2, 3, 4 and 5 are denoted by the same reference numerals, and the same description is omitted as appropriate.

  A boss portion 1101 for fastening together with the circuit unit is added to the front cover 101, and is assembled at the stage of the shield unit, and has the same operational effects as the fifth embodiment.

  The video display device according to the present invention has higher design freedom, increases the rigidity of the device, simplifies the device, and improves the shielding effect, and is useful for a large display such as a plasma display device.

Three views of the plasma display television of the present invention Configuration diagram of circuit unit and plasma display device of embodiment 1 Figure of front glass of Embodiment 1 Diagram of shield unit of embodiment 1 Diagram of shield unit and plasma display device of embodiment 2 Diagram of shield unit and plasma display device of embodiment 3 Diagram of shield unit of embodiment 3 Diagram of shield unit and plasma display device of embodiment 4 The figure of the plasma display apparatus of Embodiment 4 Figure of front glass of Embodiment 5 Diagram of shield unit of embodiment 5 Diagram of shield unit and plasma display device of embodiment 6 Diagram of shield unit and plasma display device of embodiment 6 Diagram of shield unit of embodiment 6 Three views of a conventional plasma display TV Figure of conventional shield unit and plasma display device Enlarged view of the upper end point as seen from the side of the conventional shield unit and plasma display device

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Front cover 102 Front glass 103 Rear cover 201 Light emission panel 202 Base 203 Circuit board 204 Bracket 205 Screw 206 Circuit unit 207 stand 301 Conductive vapor deposition layer 302 Conductive tape 401 Shield (horizontal)
402 Claw 403 Shield (upper)
404 Groove 405 Shield (bottom)
406 Groove part 501 Boss part 502 Shield unit 503 Fixing beam part 504 Claw part 505 Boss part 601 Boss part 602 Boss part 603 Shield (bottom)
801 Claw 802 Speaker hole 803 Speaker 901 Bracket (Large)
1101 Boss part 1102 Mold slide part

Claims (5)

A front panel disposed on the front of the light emitting panel and having a conductive layer;
A U-shaped first shield member disposed at the upper and lower ends of the front panel;
A second shield member disposed on the left and right ends of the front panel,
The front panel is inserted into the U-shape of the first shield member, and the groove portion at the end of the first shield member from the rear side of the front panel is a claw portion at the end of the second shield member. An image display device comprising: a presser unit; a shield unit in which the front panel, the first shield member, and the second shield member are electrically connected. The inside of the U-shape of the first shield member is electrically connected to the surface of the front panel,
The video display device according to claim 1, wherein the second shield member is electrically connected to the back surface of the front panel while being pressed against the first shield member. A base for holding the light emitting panel;
The video display device according to claim 1, wherein a bridge claw structure portion provided on the first shield member is attached to a beam-like structure portion provided on an upper end portion of the base. A base for holding the light emitting panel;
A bracket electrically connected to the base,
The video display device according to claim 1, wherein the shield unit and the bracket are electrically connected to the base by screwing. A rear cover surrounding a rear surface of the base and the bracket;
5. The video display device according to claim 4, further comprising a third shield member for fastening screws to the rear cover and the base.

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