JP2004117874A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device which can easily meet a user's request for changing appearance designs and exhibits an effect of shielding the electromagnetic waves from a display unit, such as a plasma display. <P>SOLUTION: The display unit of the display device is fixed by fastening components, such as screws, to a frame disposed between a rear panel and the display unit and is integrated by fixing filter mounting fittings for supporting an optical filter by means of the fastening components, such as the screws, to the bent end of the frame. The rear panel is fixed to the back side of the integrated frame by means of the fastening components, such as the screws. The front panel covers the optical filter and the filter mounting fittings at the tip section of the L-shaped frame-like front panel and is fixed to the frame-like end of the rear panel fixed at the other end thereof by means of the fastening components, such as the screws. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device that can easily respond to a user's request for changing the appearance design, and that exhibits an electromagnetic wave shielding effect from a display unit such as a plasma display (hereinafter, referred to as a PDP).
[0002]
[Prior art]
Conventionally, as shown in FIG. 9, a thin image display device such as a PDP has a rectangular frame 21 having upper, lower, left and right sides 20 for holding an optical filter 24 on a front surface thereof, A fixing bracket for fixing the frame 21 and a back cover 23 that covers the back of the frame 21 are included. The inner surface of each side 20 of the frame body 21 is formed in a step-like manner, and the inner surface of each side 20 is provided with a similarly-stepped partial fitting 22 that forms a fixing bracket. The entire inner surface of the side portion 20 is covered with the partial metal fitting 22. The optical filter 24 has its edge 26 disposed on the first flat portion 27 of the frame side 20, and is pressed by the first flat portion 28 of the partial bracket 22 via a gasket 29 having conductivity and elasticity. Fixed. The PDP 25 is completely covered by a front optical filter 24, side parts 22 and a back cover 23, and discloses a structure in which electromagnetic waves emitted by the PDP 25 are blocked (for example, see Patent Document 1). ).
[0003]
[Patent Document 1]
JP 2001-141972 A (page 1, FIG. 1)
[0004]
[Problems to be solved by the invention]
As described above, in the above-described conventional thin image display device shown in FIG. 9, the rectangular frame body 21 (corresponding to the front panel 6 of the present application) including the upper, lower, left, and right sides 20 has the inner surface of each side 20. The entire inner surface of each side portion 20 is covered with a partial bracket 22 (corresponding to the filter mounting bracket 2 of the present application), and a back cover 23 (corresponding to the rear panel 5 of the present application) and a step-like partial metal fitting are formed. Since the frame 22 and the frame 21 are fixed and attached by the screw 30, the structure is such that only the rectangular frame 21 cannot be removed without disassembling the inside of the set, and it takes a lot of time to replace the frame 21. There was a problem. Therefore, the rectangular frame 21 of the PDP 25 (corresponding to the display unit 3 of the present application) is an external part, and it is necessary to replace the frame 21 when it is scratched or for each design variation by OEM or the like. A structure that can be easily removed and replaced is desired.
[0005]
The optical filter 24 is entirely shielded with a transparent electrode or the like for the purpose of preventing electromagnetic waves or the like radiated from the inside of the set. It is necessary to ensure that the sides are in contact with the ground of the PDP body. Conventionally, a partial metal fitting was placed on each side of the filter and fixed with screws at regular intervals from above the partial metal fitting 22, or as shown in FIG. 9, pressed and fixed via a conductive and elastic gasket 29. However, the gasket 29 in the middle part of each screw did not have sufficient contact with the ground, and the shielding performance was reduced. In addition, although the shielding performance is improved by setting the interval between the screws to be small, the number of screws and the number of assembling steps are increased.
[0006]
The present invention is intended to solve such a problem. Since the front panel is an external part, it is easily replaced when the front panel is damaged or the external design is easily changed according to the atmosphere in which the image display device is used. It is an object of the present invention to provide a display device that can perform the above-described function and shield the electromagnetic waves from a display unit such as a PDP.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a display device of the present invention includes a display unit such as a plasma display, an optical filter and a front panel mounted on a front surface of the display unit, and a rear panel covering a back surface of the front panel. In a display device having a display unit disposed between a filter and a front panel and a rear panel, the display unit is fixed to a frame provided between the rear panel and the display unit with fastening parts, and At the bent end, a filter mounting bracket for supporting the optical filter is fixed and integrated with a fastening component, the rear panel is fixed to a back side of the integrated frame with a fastening component, and the front panel is The optical filter and the filter mounting metal are provided at a front end portion of an L-shaped front panel. Together covering, characterized by fixed fastening part to the frame-like end portion of the fixed rear panel in the other end. Further, the filter mounting bracket is characterized in that an end on the side supporting each of the four sides of the rectangular optical filter has an arbitrary number of staggered claw portions and is held therebetween.
[0008]
[Action]
A display unit such as a plasma display according to the present invention is fixed to a frame provided between the rear panel and the display unit with a fastening part, and a filter mounting bracket for supporting an optical filter is provided at a bent end of the frame. The rear panel is fixed to the rear side of the integrally formed frame by a fastening component, and the front panel is provided with an optical filter and a filter mounting bracket at the tip of the L-shaped front panel. Covering and fixing to the frame end of the rear panel fixed at the other end with a fastening part allows the front panel only to be easily attached and detached simply by taking the fastening part on the frame end of the rear panel. The front panel is an external part, so if it is damaged, it can be replaced or the external design can be changed to the image display device. It can be easily modified to suit the atmosphere to be use. Further, the filter mounting bracket for supporting the optical filter has an arbitrary number of staggered claw portions on the side supporting the four sides of the rectangular optical filter, and the front and back sides of the optical filter. Of course, it is of course easy to mount the optical filter, and unnecessary radiation noise from the PDP can be exhibited with higher shielding performance than before.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention according to the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a main part of an embodiment of a display device in a PDP according to the present invention, FIG. 2 is an exploded perspective view of an embodiment of the present invention, and FIG. It is a perspective view of a front panel. As shown in FIG. 1, a flat display unit 3 such as a plasma display, an optical filter 1 and a front panel 6 mounted on the front of the display unit 3, and a rear panel 5 covering the back of the front panel 6 are provided. In the display device in which the display unit 3 is disposed between the optical filter 1 and the front panel 6 and the rear panel 5, the display unit 3 is provided on a frame 4 provided between the rear panel 5 and the display unit 3 by fastening parts such as screws. 8 and a bent end of the frame 4 is integrated with a filter mounting bracket 2 for supporting the optical filter 1 by fastening parts 7 such as screws, and a rear panel 5 is formed of an integrated frame. The front panel 6 is fixed to the rear side of the front panel 4 with a fastening component 9 such as a screw. And with covering filter mounting bracket 2, and is configured to secure at fastening part 10 such as screws to the frame-shaped end of the fixed rear panel 5 at the other end.
[0010]
As shown in FIGS. 2 and 3, a filter mounting bracket 2 supporting an optical filter 1 and a front panel 6 are mounted on the front of the display unit 3 around the display unit 3, and a frame 4 is mounted on the back of the display unit 3. Are mounted, and a rear panel 5 is mounted on the back of the frame 4. Although not shown, a drive circuit board for driving the display unit 3, a control board for controlling the apparatus, a power supply board for supplying power, and the like are mounted on the display unit 3. The display unit 3 has metal bosses 3a, which are holding portions for supporting and holding the weight, dispersed and arranged at predetermined positions, and is formed of a rectangular frame by aluminum die casting, magnesium die casting, or the like. It is attached to a rigid frame 4. In the example shown in the figure, bosses 3a are arranged at four places in the horizontal direction on the upper rear surface of the display unit 3. The boss 3a is made of a cylindrical metal, has a screw hole for a mounting screw in a cylindrical shaft center, and is fixed to the frame 4 by a fastening part 8 such as a screw. These bosses 3a on the rear surface of the display unit 3 are provided at corresponding positions on the frame 4 on the rear surface, and are screwed with screws 8 of fastening parts. At the bent end of the frame 4, a filter mounting bracket 2 supporting the optical filter 1 is fixed by a fastening component 7 such as a screw and is integrated, and the weight is supported and held by the frame 4.
[0011]
Further, a rear panel 5 made of aluminum or the like is fixed to a back side of the integrated frame 4 with a fastening part 9 such as a screw. As shown in FIG. The front end of an L-shaped frame-shaped front panel 6 having an opening 6b covers the optical filter 1 and the filter mounting bracket 2, and the other end fixed to the frame-shaped end of the rear panel 5 with screws or the like. In the example of FIG. 3, the fastening part 10 is configured to be fixed at four places. Therefore, according to this configuration, only the front panel 6 can be easily attached and detached simply by removing the screw 10 on the frame-shaped end of the rear panel 5, and since the front panel 6 is an external component, it can be replaced when it is damaged. The appearance design can be easily changed according to the atmosphere in which the image display device is used.
[0012]
FIG. 4 is a perspective view showing the structure of the filter mounting bracket of the embodiment. As shown in FIGS. 3 and 4, the filter mounting bracket 2 is composed of four filter mounting brackets 2a, 2b, 2c, and 2d corresponding to each side of the optical filter 1, and reinforces a plate body made of aluminum, stainless steel, or the like. The end of the frame 4 is provided with a screw hole 7a to be fixed to the bent end of the foom 4 at one end face thereof, as shown in FIG. Are fixed with fastening parts 7 such as pinching screws, and the other side supporting the optical filter 1 is provided with an arbitrary number of staggered ends on the side supporting the four sides of the rectangular optical filter 1. The front and back sides of the optical filter 1 are held with the claw portions 2h and 2j at intervals.
[0013]
In the example of this figure, when the sides of the optical filter 1 are clamped by the claws 2h and the claws 2j, the claws are clamped while the surface of the optical filter 1 on the display unit 3 side is sandwiched. In 2h, the plate is cut out to have a spring property. It is preferable that the width of each claw portion 2h is smaller than the width of each claw portion 2j, because the gap due to the spring characteristics and the cutout is reduced, and the leakage of the electromagnetic wave is suppressed. Further, each claw portion 2j serving to hold the surface side of the optical filter 1 on the front panel 6 side is an L-shaped flat state and serves as a reference surface for holding and holding the optical filter 1 in a flat state. Therefore, it is preferable that the width of each claw portion 2j be wider than the width of each claw portion 2h having a spring property because of flatness and mechanical strength (rigidity) such that the optical filter 1 does not warp. With this configuration, the optical filter 1 can be easily attached and floated, and there is no occurrence of a problem such as warpage or bending.
[0014]
FIG. 5 is a cross-sectional view showing the claw portion of the filter mounting bracket with the optical filter held therebetween. The optical filter 1 is a transparent plate having conductivity and exhibiting an electromagnetic shielding effect, and is formed by, for example, applying a transparent conductive film (for example, ITO) to a transparent acrylic plate or the like. As shown in FIG. 5, each of the claws 2h having a spring property of the filter mounting bracket 2 has a projection 2f on the surface side that holds the optical filter 1. Even if the thickness of the optical filter 1 (including the transparent electrode 1b and the black solid light-shielding film 1a shown in FIG. 6) varies due to the protrusions 2f, the optical filter 1 reliably comes into contact with the filter mounting bracket 2 made of aluminum, stainless steel or the like. Through the frame 4 and the rear panel 5, conduction to the ground can be obtained, and an effect of shielding electromagnetic waves from the display unit 3 such as a PDP can be exhibited.
[0015]
Further, as shown in FIG. 6, a role of holding the conductive tape 11 such as an aluminum foil or a copper foil in a flat U-shape with each of the claws 2h having the projections 2f of the filter mounting bracket 2 through a U-shape. It is preferable that the sides of the optical filter 1 are held between the claw portions 2j and the claw portions 2j so that more reliable contact can be obtained and an electromagnetic wave shielding effect can be exhibited.
[0016]
Furthermore, as shown in FIG. 7, at least one end of the claw portion 2j serving to hold the surface side of the optical filter 1 on the front panel 6 side in the longitudinal direction of the filter mounting bracket 2, is provided with a rectangular optical member. By providing the cut-and-raised portion 2g for positioning the filter in the longitudinal direction, the optical filter 1 can be positioned, so that the work of holding the filter to the filter mounting bracket 2 becomes easy.
[0017]
FIG. 8 is a cross-sectional view of a front panel according to another embodiment. As shown in FIG. 8, the filter mounting bracket 2 is provided with a slit portion 2e in a stepped portion to expose the edge of the optical filter 1, and has an L-shaped frame on a front panel 6 molded of plastic or the like. A positioning rib 6a also serving as reinforcement is provided on the inside of the optical filter 1 and the edge of the optical filter 1 is brought into contact with the optical filter 1 to position the optical filter 1, whereby the front panel 6 and the optical filter 1 can be positioned. The end of the screen opening 6b of the front panel 6 and the end of the light-shielding film 1a of the optical filter 1 can be accurately positioned and attached even if the base plate is detached.
[0018]
【The invention's effect】
As described above, according to the present invention, the rear panel is fixed to the back surface of the frame fixing the display unit with a fastening component such as a screw, and the front panel is an optical filter at the tip of the L-shaped front panel. And fixing the filter mounting bracket to the frame-shaped end of the rear panel with a fastening part such as a screw at the other end, thereby easily removing the screw of the fastening part on the frame-shaped end of the rear panel. Since only the front panel can be attached and detached, and the front panel is an external part, it can be easily replaced when it is damaged, and its external design can be easily changed according to the atmosphere in which the image display device is used. In particular, the structure is optimal for a large-sized and heavy plasma display (PDP).
[0019]
The filter mounting bracket has an arbitrary number of end portions on the side supporting the four sides of the rectangular optical filter, and has an arbitrary number of staggered claw portions to hold the front and back of the optical filter. Can be easily attached, and a higher shielding performance can be exhibited with respect to unnecessary radiation from the PDP than before.
[0020]
By having a projection on at least one of the holding surfaces of the claw of the filter mounting bracket, even if the thickness of the optical filter (including the transparent electrode and the solid black light shielding film) varies, the filter can be securely mounted. It is in contact with the metal fittings to establish electrical continuity, and can exhibit an electromagnetic wave shielding effect from a display unit such as a PDP.
[0021]
The width of the other claw portion of the filter mounting bracket is wider than the width of the one claw portion with the cut-out spring property, so that the filter is flat and rigid, so that the optical filter can be easily mounted and lifted, warped, bent, etc. No accident problems will occur.
[0022]
At least one end of the claw in the longitudinal direction of the filter mounting bracket is provided with a cut-and-raised portion for positioning the longitudinal direction of the rectangular optical filter, so that the optical filter can be positioned. The work of holding the attachment becomes easy.
[0023]
The front panel is provided with positioning ribs serving also as reinforcements inside the L-shaped frame, and the edges of the optical filter 1 are brought into contact with each other to position the optical filter, whereby the front panel and the optical filter can be positioned. Therefore, even if the front panel is detached, the screen opening of the front panel and the light shielding film of the optical filter can be accurately positioned and attached.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of an embodiment of a display device in a PDP according to the present invention.
FIG. 2 is an exploded perspective view of one embodiment of the present invention.
FIG. 3 is a perspective view of the exploded view of FIG. 2 assembled and a front panel.
FIG. 4 is a perspective view showing a structure of a filter mounting bracket according to the present invention.
FIG. 5 is a cross-sectional view showing a projection of a claw of a filter mounting bracket according to the present invention.
FIG. 6 is a cross-sectional view of a state where the filter is clamped by a filter mounting bracket via a conductive tape according to the present invention.
FIG. 7 is a perspective view of a cut-and-raised portion of the filter mounting bracket according to the present invention.
FIG. 8 is a sectional view of a front panel according to another embodiment of the present invention.
FIG. 9 is a cross-sectional view of a conventional PDP thin image display device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical filter 2 Filter mounting bracket 3 Display unit 4 Frame 5 Rear panel 6 Front panel 7, 8, 9, 10 Fastening parts such as screws

Claims (7)

It comprises a display unit such as a plasma display, an optical filter and a front panel mounted on the front of the display unit, and a rear panel covering the back of the front panel. The display unit is disposed between the optical filter and the front panel and the rear panel. In the display device,
The display unit is fixed to a frame provided between the rear panel and the display unit with a fastening part, and a filter mounting bracket for supporting the optical filter is provided at a bent end of the frame with a fastening part. Fixed and integrated,
The rear panel is fixed to a rear side of the integrated frame with a fastening component,
The front panel covers the optical filter and the filter mounting bracket at the tip of the L-shaped front panel, and is fixed to the frame end of the fixed rear panel at the other end with a fastening part. A display device, comprising: It comprises a display unit such as a plasma display, an optical filter and a front panel mounted on the front of the display unit, and a rear panel covering the back of the front panel. The display unit is disposed between the optical filter and the front panel and the rear panel. In the display device,
The display unit is fixed to a frame provided between the rear panel and the display unit with a fastening part, and a filter mounting bracket for supporting the optical filter is provided at a bent end of the frame with a fastening part. Fixed and integrated,
The rear panel is fixed to a rear side of the integrated frame with a fastening component,
The filter mounting bracket has an end on the side that supports each of the four sides of the rectangular optical filter and has an arbitrary number of staggered claw portions and holds the rectangular optical filter.
The front panel covers the optical filter and the filter mounting bracket at the tip of the L-shaped front panel, and is fixed to the frame end of the fixed rear panel at the other end with a fastening part. A display device, comprising: The display device according to claim 2, wherein one of the cutout claws of the filter mounting bracket has a protruding portion on a surface side that sandwiches the optical filter. 4. The display device according to claim 2, wherein a width of the other claw portion of the filter mounting bracket is wider than a width of the one claw portion having the spring property. 5. The filter mounting bracket is characterized in that a slit is provided in a stepped portion to expose an edge of the optical filter, and a positioning rib provided on a front panel is brought into contact with an edge of the optical filter to position the optical filter. The display device according to claim 1, wherein 6. A cut-and-raised portion for positioning a rectangular optical filter in a longitudinal direction is provided at at least one end of a claw portion in a longitudinal direction of the filter mounting bracket. The display device according to claim 1. The display device according to any one of claims 1 to 6, wherein the display unit is a plasma display.

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