JP4962120B2 - Display device - Google Patents

Description

  The present invention relates to a display device using a large-screen, thin and light plasma display device.

  In recent years, plasma display devices have attracted attention as display panels (thin display devices) with excellent visibility, and higher definition and larger screens are being promoted.

  This plasma display device is roughly classified into an AC type and a DC type in terms of driving, and there are two types of discharge types: a surface discharge type and a counter discharge type, but high definition, large screen, and simple manufacturing are possible. Therefore, at present, AC-type and surface-discharge-type plasma display devices are mainly used.

  In such a plasma display device, a pair of transparent glass substrates are arranged so as to face each other so that a discharge space is formed therebetween, and an electrode group is arranged on the glass substrate (hereinafter referred to as a panel), and this panel A panel module is composed of a chassis member that holds the frame and a display drive circuit block that is attached to the chassis member and applies a signal to the panel to perform display, and the panel module is covered with a casing to form a finished product. (See Patent Document 1).

Such a plasma display device has a feature that it is easy to realize a large screen as compared with other display devices such as a liquid crystal display device and a CRT, and a clear image can be obtained as compared with other large display devices. For this reason, it is attracting attention as an information display device in a place where many people gather.
Japanese Patent No. 2807672

  The object of the present invention is to expand the application of such a plasma display device as an information display device.

  In order to achieve the above object, the present invention displays a display panel by disposing a display panel with a heat conductive sheet interposed in front of a flat chassis plate and a drive circuit board for driving and displaying the display panel on the back. A flat panel display device configured by forming a module and housing the display module in a case; and a display stand for holding the display device horizontally so that the display panel side faces upward. The pedestal has a holding angle for holding the display device horizontally so that the display panel side is facing upward, and is provided around the holding angle and is used for exhaust that can generate an air flow around the outer periphery of the display device. A duct and a fan attached to one end of the exhaust duct for generating an air flow in the exhaust duct are provided.

  According to the present invention, a plasma display device that is normally used only as a vertical display device can be used as a horizontal display device, and the application as an information display device can be expanded.

  Hereinafter, although the display apparatus by one Embodiment of this invention is demonstrated using FIGS. 1-8, the aspect of this invention is not limited to this.

  First, the structure of the 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.

  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.

  The substrate 1 and the substrate 5 are opposed to 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 to each other, 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

  In a display panel having such a configuration, an address pulse is applied between the address electrode and the scan electrode to perform an address discharge between the address electrode and the scan electrode, and after selecting a discharge cell, the scan electrode and the sustain electrode. By applying periodic sustain pulses that are alternately inverted between the electrodes, a sustain discharge is generated between the scan electrodes and the sustain electrodes, and a predetermined display is performed.

  FIG. 2 shows a plasma display device as a flat panel display device using the display panel 10 having such a configuration. As shown in FIG. 2, a display panel 10 is disposed on the front surface of a flat chassis plate 11 made of aluminum or the like with a heat conductive sheet 12 interposed therebetween, and a drive circuit board 13 that drives and displays the display panel 10 on the back surface. And a cooling fan 14 for cooling constitutes a display module, and the display module includes a front frame 15 having a display window (not shown) so that the display panel 10 is exposed, and a plurality of ventilation holes. It is comprised by accommodating in the case which consists of the rear surface cover 16 which has 16a. That is, in this plasma display device, heat generated from the display panel 10 by display driving is transferred to the chassis plate 11 through the heat conductive sheet 12 and generated on the drive circuit board 13 disposed on the back side of the chassis plate 11. It is configured to dissipate to the outside through the vent hole 16a of the rear cover 16 together with the heat to be generated.

  FIG. 3 shows an overall external view of a display device according to an embodiment of the present invention, and FIGS. 4 to 6 show the overall configuration of the display device.

  3 to 6, reference numeral 20 denotes a plasma display device shown in FIG. 2, and 21 denotes a display stand for holding the plasma display device 20 horizontally so that the display panel 10 side faces upward.

  The display base 21 includes a base body 22 and a top plate 23 disposed on the top surface of the base body 22, and the plasma display device 20 is horizontally placed on the base body 22 so that the display panel 10 side faces upward. A holding angle 24 provided at the center for holding, an exhaust duct 25 provided around the holding angle 24 and capable of generating an air flow around the outer periphery of the plasma display device 20, and the exhaust A fan 26 attached to the terminal end of one end of the duct 25 for generating an air flow in the exhaust duct 25, an air inlet 27 provided on the start side opposite to the fan 26, and the air inlet 27 And a filter 28 attached thereto.

  The top plate 23 disposed on the upper surface of the display stand 21 is provided with a display window 23a that exposes only the plasma display device. Reference numeral 20a denotes a protective glass attached to the display window of the front frame 15 of the plasma display device 20, and the protective glass 20a prevents the display panel 10 of the plasma display device 20 from being broken by an externally applied impact. .

  7 and 8 are views showing the internal structure in a state where the top plate 23 is opened and the plasma display device 20 is removed. As is apparent from FIGS. 7 and 8, the plasma display device 20 is held. A space 29 exists below the holding angle 24, and an exhaust duct 25 in which a metal plate is processed in a U-shaped cross section is provided around the holding angle 24 so as to be provided side by side with the space 29. Thus, a space 29 exists on the back side of the plasma display device 20 installed horizontally, and an exhaust duct 25 exists below the edge on the back side of the plasma display device. Further, the plasma display device 20 is horizontally held on the holding angle 24 of the base body 22 of the display base 21 so that the upper opening of the exhaust duct 25 is closed by the case of the plasma display device 20. ing.

  In addition, an elastic member 30 such as rubber or a cushion material is disposed at a peripheral end portion of the upper opening of the exhaust duct 25 in order to enhance a sealing state with the case of the plasma display device 20. Further, the fan 26 is attached to the end of the exhaust duct 25 so as to be orthogonal to the exhaust duct 25.

  As described above, according to the present embodiment, the plasma display device 20 is provided with the display stand 21 that holds the plasma display apparatus 20 horizontally so that the display panel 10 side faces upward, and the display stand 21 faces the display panel 10 side upward. A holding angle 24 for horizontally holding the plasma display device 20 so as to be, and an exhaust duct 25 provided around the holding angle 24 and capable of generating an air flow around the outer periphery of the plasma display device 20. And a fan 26 attached to one end of the exhaust duct 25 for generating an air flow in the exhaust duct 25, and generating heat from the display panel 10 by performing display driving. Even when the apparatus 20 is installed in a horizontal direction, the heat generated from the plasma display apparatus 20 is increased. Plasma display device can be dissipated to the outside through the effective exhaust duct 25 from the rear side of the 20, thereby it is possible to use in a state where the plasma display device 20 is installed horizontally.

  In particular, in the present invention, the upper opening of the exhaust duct 25 is configured to be closed by the case of the plasma display device 20, so that heat generated from the plasma display device 20 is directly exhausted from the back side of the plasma display device 20. Since it is configured to be drawn into the duct 25 and dissipated to the outside through the exhaust duct 25, the heat of the plasma display device can be effectively dissipated to the outside, and thereby the plasma display device 20 is installed in the horizontal direction. Even if used, the problem that the display quality deteriorates due to the heat generated from the plasma display device 20 is less likely to occur.

  As described above, according to the present invention, the invention is useful for expanding the usage applications of the plasma display device.

Schematic perspective view showing the configuration of the plasma display panel Exploded view of plasma display device 1 is an external view showing an entire display device according to an embodiment of the present invention. Schematic plan view showing the arrangement of the plasma display device in the same device Schematic side view as seen from direction A in FIG. Schematic side view seen from direction B in FIG. The perspective view which shows the principal part structure inside the apparatus The perspective view which shows the principal part structure inside the apparatus

Explanation of symbols

10 Panel 20 Plasma display device 21 Display stand 24 Holding angle 25 Exhaust duct 26 Fan

Claims (2)

A display panel is disposed on the front surface of the flat chassis plate with a heat conductive sheet interposed therebetween, and a drive circuit board for driving and displaying the display panel is disposed on the back surface to constitute a display module, and the display module is disposed in the case. And a display stand that holds the display device horizontally so that the display panel side faces upward, the display stand facing upward on the display panel side. A holding angle for horizontally holding the display device, an exhaust duct provided around the holding angle and capable of generating an air flow around the outer periphery of the display device, and attached to one end of the exhaust duct And a fan for generating an air flow in the exhaust duct. The display device according to claim 1, wherein an upper opening of the exhaust duct is closed by a display device case.

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