JP3324673B2 - Plasma display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device which reliably prevents unnecessary radiation of radio waves.

[0002]

2. Description of the Related Art P used for a plasma display device
Between the DP (Plasma Display Panel) and the signal board for driving the DP, the signal board and the electrodes of the PDP are connected by flexible wires. Since an impulse-like discharge current flows through the flexible wire, unnecessary radiation of radio waves is generated. In order to suppress this unnecessary radiation, there is a method of inserting a conductive gasket between the spring clip that holds the flexible wire and the housing frame, but there is a risk that the gasket will move due to the temperature rise of the panel and break other parts. is there. There was also a problem that measures for unnecessary radiation were insufficient.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a technique which does not cause a problem even if the temperature rises and which sufficiently suppresses unnecessary radiation. is there.

[0004]

Means for Solving the Problems A first conductor made of an electric conductor which covers the outer periphery of a spring clip for holding a flexible wire connecting a PDP and a circuit board with the spring clip interposed therebetween.
The contact strip is disposed on the outer periphery of the first contact strip so as to cover the contact strip, and the contact strip is made of an electric conductor having a contact terminal for contacting a housing frame of a plasma display device made of an electric conductor. A second contact strip is arranged to electromagnetically shield the spring clip and make it the same potential as the housing frame.

[0005] The contact strip is made of stainless steel.

[0006] The contact terminals of the second contact strip are U-shaped springs, and the tips of the contact terminals are pressed against the housing of the plasma display device.

[0007] The contact terminals of the second contact strip are phosphor bronze.

[0008]

According to the present invention, a first contact strip made of an electric conductor is disposed on the outer periphery of a spring clip for holding a flexible wire connecting a PDP and a circuit board with the spring clip interposed therebetween, and the first contact strip is formed on the outer periphery of the first contact strip. A second contact strip made of an electric conductor having contact terminals for covering the contact strip and sandwiching the contact strip with a housing frame of the plasma display device made of an electric conductor is arranged to electromagnetically shield the spring clip. By setting the same potential as that of the housing frame, the position of the contact strip does not move even if the temperature of the spring clip or the like rises, and sufficient unnecessary radiation can be suppressed.

The use of stainless steel for the contact strip facilitates production and maintenance.

The contact terminals of the second contact strip are U-shaped springs, and the tips of the contact terminals are pressed against the housing of the plasma display device, so that the device is easy to assemble and has the above functions. Perform well.

The contact terminals of the second contact strip are made of phosphor bronze, so that they come into contact with the housing frame with good elasticity.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a plasma display device according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows (A) one embodiment of a plasma display device according to the present invention.
It is a rear view in a housing | casing, (B) It is CC sectional drawing. The PDP 3 faces the circuit board 1 via the shield plate 2. PD
Flexible wire 5 for electrically connecting P and circuit board
Are fixed to the circuit board 1 by spring clips 5. If used as it is, the metal spring clip 5 acts as an antenna and radiates unnecessary radio waves. To prevent this, the outer periphery of the spring clip 5 is covered with a first contact clip 6 made of a metal having a U-shaped cross section. Since the first contact clip alone does not sufficiently suppress unnecessary radiation, the outer periphery is further covered with a second contact clip 7 made of metal. The second contact clip and the housing frame 9 of the plasma display device are electrically connected by a contact terminal 8 made of metal.

The first contact strip 6 and the second contact strip 7 can be covered with the spring clip 6 and the first contact strip therebetween, and have conductivity and elasticity such as a metal capable of electromagnetic shielding. I just have to. Of these, stainless steel (stainless steel) molded into a U-shape is suitable for this application because it does not require surface treatment and has elasticity.

A contact terminal 8 for connecting the second contact strip 7 to the housing frame of the plasma display device.
The second contact strip may be made of the same material as the second contact strip and partly formed in a U-shape. Alternatively, phosphor bronze having more elasticity may be used.

[0015]

As described above, the outer periphery of a spring clip for fastening a flexible wire for connecting a PDP and a circuit board for driving the PDP is covered with a double conductive contact strip so as to cover the outer periphery of the spring clip. By electrically connecting the contact strips, the contact strips are not dislodged even when the temperature inside the device rises, and the safety is excellent.
Further, since the contact strips are doubled, sufficient measures against unnecessary radiation can be taken.

[Brief description of the drawings]

FIG. 1A is a rear view of the inside of a housing, and FIG. 1B is a cross-sectional view of the same CC, of an embodiment of the plasma display device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Shield plate 3 PDP 4 Flexible wire 5 Spring clip 6 First contact strip 7 Second contact strip 8 Contact terminal 9 Housing frame

Claims (4)

(57) [Claims] 1. PDP (Plasma Display Panel)
And a circuit board that drives the PDP by connecting the circuit board with a flexible wire to operate the plasma display device, wherein the first conductor comprises an electric conductor that covers the outer periphery of the spring clip holding the flexible wire with the spring clip interposed therebetween.
The contact strip is disposed on the outer periphery of the first contact strip so as to cover the contact strip, and the contact strip is formed of an electric conductor having a contact terminal that is in contact with a housing frame of a plasma display device made of an electric conductor. A second contact strip, wherein the spring clip is electromagnetically shielded and has the same potential as a housing frame. 2. The plasma display device according to claim 1, wherein the contact strip is made of stainless steel. 3. The plasma display device according to claim 1, wherein the contact terminals of the second contact strip are U-shaped springs, and the ends of the contact terminals are pressed against the housing of the plasma display device. The plasma display device according to the above. 4. The plasma display device according to claim 3, wherein the contact terminals of the second contact strip are made of phosphor bronze.