JP4333087B2 - Display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device such as a plasma display device which is known as a thin, lightweight display having a large screen.
[0002]
[Prior art]
2. Description of the Related Art In recent years, among color display devices used for image display such as computers and televisions, a plasma display device using a plasma display panel (hereinafter referred to as PDP) is a large, thin and light color display device that can be realized. Attention has been paid. In this PDP, an ultraviolet ray is generated by gas discharge, and a phosphor is excited by the ultraviolet ray to emit light to perform color display. And the display cell divided by the partition on the board | substrate is provided, and it has the structure by which the fluorescent substance layer is formed in this.
[0003]
This PDP is broadly divided into AC type and DC type in terms of driving, and there are two types of discharge types, a surface discharge type and a counter discharge type. From the viewpoint of high definition, large screen, and ease of manufacturing. At present, the mainstream of the PDP is a surface discharge type having a three-electrode structure, and the structure has a pair of display electrodes adjacent in parallel on one substrate and intersects with the display electrode on the other substrate. The address electrode arranged in the direction to be aligned, the barrier ribs, and the phosphor layer have a relatively thick phosphor layer, which is suitable for color display using the phosphor.
[0004]
A plasma display device using such a PDP can display at a higher speed than a liquid crystal panel, has a wide viewing angle, is easy to enlarge, and has a high display quality because it is a self-luminous type. For the reasons described above, flat panel displays have recently attracted particular attention, and are used for various purposes as display devices in places where many people gather, and display devices for enjoying large screen images at home. Yes.
[0005]
[Problems to be solved by the invention]
By the way, in this plasma display device, a circuit block for performing display driving is arranged on the back side of the panel to constitute a panel module, and this panel module is accommodated in a housing. Due to the structure of the PDP that performs display by discharging in the discharge cells, heat due to the discharge is generated, and the temperature of the panel module rises as the display is driven. The fan device is arranged.
[0006]
Normally, when enjoying images with such a plasma display device, the sound from the fan device does not matter because of the sound, but there is almost no sound like a quiet scene in the enjoying image In some cases, such as when enjoying the sound at a reduced volume, there is a problem that the sound of the fan device becomes annoying, so it is necessary to reduce the noise level by the air cooling fan device as much as possible.
[0007]
The present invention has been made in view of such a current situation, and an object thereof is to reduce the noise level of an air cooling fan device.
[0008]
[Means for Solving the Problems]
To achieve the above object, a display device of the present invention includes an air cooling fan device, a metal frame for mounting the air cooling fan device to a chassis member of the panel module, and the air cooling fan device as the metal frame. And holding the air cooling fan device to the holder via the first vibration isolating member, attaching the holder to the metal frame, and attaching the metal frame to the panel module. The chassis member is attached via a second vibration isolation member.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
That is, according to the first aspect of the present invention , a flat panel is disposed on the front surface of the chassis member, and a circuit block for applying a signal to the panel to display is disposed on the rear surface side of the chassis member. An air cooling fan configured by a panel module configured, a motor that is disposed on the circuit block side of the panel module and that rotates the fan, and a frame that holds the motor so that a ventilation path is formed around the motor. Apparatus, a metal frame for attaching the air cooling fan device to the chassis member of the panel module, and a holder for attaching the air cooling fan device to the metal frame, and holding the air cooling fan device And holding the holding device on the metal frame, and holding the metal frame on the metal frame. The arm on the chassis member of the panel module in which attached through a second vibration isolation member.
[0012]
Hereinafter, a display device according to an embodiment of the present invention will be described using a plasma display device as an example with reference to FIGS. 1 to 10, but the embodiment of the present invention is not limited thereto.
[0013]
First, the structure of the plasma display panel in the plasma display device will be described with reference to FIG. As shown in FIG. 1, on a transparent front substrate 1 such as a glass substrate, a plurality of stripe-shaped display electrodes 2 paired with a scan electrode and a sustain electrode are formed, and covers the electrode group. Thus, the dielectric layer 3 is formed, and the protective film 4 is formed on the dielectric layer 3.
[0014]
Further, a plurality of rows of stripes covered with an overcoat layer 6 are formed on the rear substrate 5 opposite to the front substrate 1 so as to intersect the display electrodes 2 of the scan electrodes and the sustain electrodes. Address electrodes 7 are formed. On the overcoat layer 6 between the address electrodes 7, a plurality of barrier ribs 8 are arranged in parallel with the address electrodes 7, and a phosphor layer 9 is provided on the side surface between the barrier ribs 8 and on the surface of the overcoat layer 6. Yes.
[0015]
The substrate 1 and the substrate 5 are arranged to face each other with a minute discharge space so that the display electrode 2 and the address electrode 7 of the scan electrode and the sustain electrode are almost orthogonal, and the periphery is sealed, In the discharge space, one or a mixed gas of helium, neon, argon, and xenon is sealed as a discharge gas. Further, the discharge space is divided into a plurality of sections by partition walls 8 to provide a plurality of discharge cells where the intersections of the display electrodes 2 and the address electrodes 7 are located, and each of the discharge cells has red, green and blue colors. The phosphor layers 9 are sequentially arranged one by one so that
[0016]
FIG. 2 shows an electrode arrangement of the plasma display panel. As shown in FIG. 2, the scan electrode, the sustain electrode, and the address electrode have a matrix configuration of M rows × N columns, and M rows are arranged in the row direction. Scan electrodes SCN1 to SCNM and sustain electrodes SUS1 to SUSM are arranged, and N columns of address electrodes D1 to DN are arranged in the column direction.
[0017]
In the plasma display panel having such an electrode configuration, an address pulse is applied between the address electrode and the scan electrode by applying a write pulse between the address electrode and the scan electrode, and after selecting the discharge cell, the scan electrode By applying a periodic sustain pulse that is alternately inverted between the sustain electrode and the sustain electrode, a sustain discharge is performed between the scan electrode and the sustain electrode, and a predetermined display is performed.
[0018]
FIG. 3 shows an example of the overall configuration of a plasma display device incorporating the panel having the structure described above. In the figure, a housing for accommodating a panel module using the above-described flat panel 10 is composed of a front frame 11 and a metal back cover 12, and an optical filter and panel 10 are provided in an opening of the front frame 11. A front cover 13 made of glass or the like that also serves as a protection is disposed. Further, the front cover 13 is subjected to, for example, silver vapor deposition in order to suppress unnecessary radiation of electromagnetic waves.
[0019]
The panel 10 is held on the front side of a chassis member 14 made of aluminum or the like via a heat conductive sheet 15, and on the back side of the chassis member 14, a signal is applied to the panel 10 for display driving. A plurality of circuit blocks 16 are attached to form a panel module. The heat conductive sheet 15 is for efficiently transferring the heat generated in the panel 10 to the chassis member 14 to radiate heat. Further, the circuit block 16 includes an electric circuit for performing display driving of the panel 10 and its control, and the electrode lead-out portion led out to the edge portion of the panel 10 extends beyond the four edge portions of the chassis member 14. They are electrically connected by a plurality of extending flexible wiring boards (not shown). A boss portion 14 a for attaching the circuit block 16 or fixing the back cover 12 is disposed on the rear surface of the chassis member 14.
[0020]
In addition, a plurality (four in the figure) of air cooling fan devices 17 are disposed at the upper position on the circuit block 16 side of the panel module by being attached to the chassis member 14 with screws or the like. Further, a portion of the back cover 12 facing the air cooling fan device 17 is provided with a plurality of vent holes 12a for releasing heat generated by the panel module to the outside. A vent hole for taking outside air into the inside is provided at the lower position of the.
[0021]
In the example illustrated in FIG. 3, the back cover 12 that covers the circuit block 16 side of the panel module including the air cooling fan device 17 is illustrated as an example that also serves as the housing of the entire device. As an alternative, a resin cover may be used. In this case, the back cover 12 does not have to be processed into a shape constituting the housing.
[0022]
FIG. 4 is a plan view showing the arrangement structure in detail with the back cover 12 removed in the plasma display device having such a configuration. The arrangement structure of the panel module will be described with reference to FIG. The circuit block 20 supplies a predetermined signal voltage to the scan electrode of the panel 10, the sustain driver circuit block 21 supplies a predetermined signal voltage to the sustain electrode of the panel 10, and the address driver circuit block 22 applies to the address electrode of the panel 10. The scan driver circuit block 20 and the sustain driver circuit block 21 are arranged at both ends in the width direction of the chassis member 14, and the address driver circuit block 22 is arranged in the height direction of the chassis member 14. Are arranged at the upper and lower ends of . As shown in FIG. 4, four air cooling fan devices 17 are arranged at the upper position of the panel module where the address driver circuit block 22 is arranged.
[0023]
The control circuit block 23 displays image data on the basis of a video signal sent from an input signal circuit block 24 having an input terminal portion to which a connection cable for connecting to an external device such as a television tuner is detachably connected. An image data signal corresponding to the number of pixels of 10 is converted and supplied to the address driver circuit block 22, and a discharge control timing signal is generated and supplied to the scan driver circuit block 20 and the sustain driver circuit block 21, respectively. It performs display drive control such as control, and is disposed at substantially the center of the chassis member 14.
[0024]
The power supply block 25 supplies a voltage to each of the circuit blocks. Like the control circuit block 23, the power supply block 25 is disposed at a substantially central portion of the chassis member 14 and includes a connector 26 to which a power supply cable (not shown) is attached. The commercial power supply voltage is supplied through the power input block 27 having the power supply.
[0025]
The bracket 28 is attached to the stand pole, and is attached to the position of the lower end portion of the chassis member 14 in the height direction. The tip of the stand pole attached to the stationary stand is inserted into the hole of the bracket 28, and the stand pole is fixed to the bracket 28 with screws or the like, so that the stand is attached, and thus the panel is held upright. It will be.
[0026]
The flexible wiring board 29 connects the electrode lead-out portions of the scan electrode and the sustain electrode of the panel 10 and the printed wiring board of the scan driver circuit block 20 and the sustain driver circuit block 21, and the flexible wiring board 30 is an address electrode of the panel 10. The electrode lead-out portion and the printed wiring board of the address driver circuit block 22 are connected to each other. The electrode lead-out portion and the printed wiring board of the address driver circuit block 22 are arranged by being bent 180 degrees from the front side to the back side through the outer periphery of the panel 10.
[0027]
FIGS. 5 and 6 are views showing a peripheral portion of the air cooling fan device 17, and FIGS. 7 to 10 are views showing a main portion of the air cooling fan device 17, as shown in FIGS. The air cooling fan device 17 includes a motor 32 that rotates the fan 31 and a frame 34 that includes a motor support 34 a that holds the motor 32 so that a ventilation path 33 is formed around the motor 32. Has been.
[0028]
The metal frame 35 is for attaching the air-cooling fan device 17 to the chassis member 14, and the mounting piece 35 a of the metal frame 35 is screwed on a part of the standing wall 14 b and the boss portion 14 a provided on the chassis member 14. The air cooling fan device 17 is attached with a gap between the chassis member 14 and the circuit block 16. As shown in FIG. 7, the metal frame 35 is provided with an anti-vibration rubber 37 as a washer-like anti-vibration member fitted into the attachment piece 35a as shown in FIG. The chassis member 14 is attached to a standing wall 14b and a boss portion 14a via a vibration isolating rubber 37.
[0029]
Further, as shown in FIGS. 8 and 9, the air cooling fan device 17 holds the frame body 34 with a metal holder 38, and the attachment piece 38 a of the holder 38 is fixed to the metal frame 35 with screws 39. It is attached by doing. Further, as shown in FIG. 10, the metal holder 38 has a holding portion 38b in which the four corners of the frame 34 of the air cooling fan device 17 are fitted, and the holding portion 38b has a holding portion 38b. The anti-vibration rubber 40 is provided as an anti-vibration member, whereby the air cooling fan device 17 is held by the holder 38 via the anti-vibration rubber 40. That is, as shown in FIG. 9 and FIG. 10, first, the holding tool 38 is fitted to the air cooling fan device 17 via the anti-vibration rubber 40, and in this state, held by the metal frame 35 with screws 39 as shown in FIG. By attaching the tool 38, the air cooling fan device 17 is attached to the metal frame 35 via the anti-vibration rubber 40.
[0030]
As is clear from the above embodiment, the air cooling fan device 17 is held by the holder 38 via the vibration isolating rubber 40, the holder 38 is attached to the metal frame 35, and the metal frame 35 is attached. Since the vibration of the air-cooling fan device 17 is transmitted to the metal frame 35 by the vibration-proof rubber 40 by being attached to the chassis member 14 of the panel module via the vibration-proof rubber 37, the panel module is further removed from the metal frame 35. The vibration transmitted to the chassis member 14 can be absorbed by the anti-vibration rubber 37, whereby unnecessary noise due to the vibration of the air cooling fan device 17 can be reduced.
[0031]
【The invention's effect】
As is apparent from the above description, the display device according to the present invention can obtain the effect that the vibration of the air cooling fan device can be absorbed to reduce unnecessary noise.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a panel of a plasma display device according to an embodiment of the present invention. FIG. 2 is an explanatory view showing an electrode arrangement of the panel of the plasma display device. FIG. 4 is a plan view showing an internal arrangement structure of the plasma display device. FIG. 5 is a plan view showing an air cooling fan device portion of the plasma display device. FIG. 7 is a side view showing a main part of the same part. FIG. 8 is a side view showing a state in which an air cooling fan device is attached to a metal frame. FIG. 9 is held by the air cooling fan device. A plan view showing a state in which a tool is attached [FIG. 10] A plan view showing a main part of the same part
DESCRIPTION OF SYMBOLS 10 Panel 11 Front frame 12 Back cover 12a Vent hole 14 Chassis member 17 Air-cooling fan device 31 Fan 32 Motor 33 Ventilation path 34 Frame body 35 Metal frame 37, 40 Anti-vibration rubber 38 Holder

Claims (1)

A panel module configured by arranging a flat panel on the front surface of the chassis member and arranging a circuit block for applying a signal to the panel to display on the back side of the chassis member, and a circuit block side of the panel module And a fan for rotating the fan, and an air cooling fan device configured with a frame body that holds the motor so that a ventilation path is formed around the motor, and the air cooling fan device of the panel module. A metal frame for attaching to the chassis member and a holder for attaching the air cooling fan device to the metal frame, and holding the air cooling fan device to the holder via the first vibration isolation member. with, attach the holder to the metal frame, and chassis member of the panel module said metal frame Display device being characterized in that attached via a second vibration isolating member.

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