JP3653847B2 - Liquid crystal display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid crystal display device that reproduces an external video signal as an image on a liquid crystal module having a backlight.
[0002]
[Prior art]
A liquid crystal display device having a backlight is low power, thin, and lightweight, but is generally used in a range in which the relationship between the liquid crystal module and the line of sight is substantially perpendicular because of a narrow viewing angle. For example, it is widely used as a display of a notebook personal computer (PC), a portable game machine, and a small television apparatus having a display screen size of about 3 to 5 inches.
[0003]
However, in recent years, development has been made to widen the viewing angle, which has been a problem with liquid crystal display devices, and the viewing angle has been greatly expanded along with clear image reproducibility, and a good image can be obtained from any direction. It has become possible.
[0004]
This technical content is introduced in the December 1995 issue of NIKKEI MICRODEVICES.
[0005]
On the other hand, the environment of the graphic user interface (GUI) has been improved, and the PC has been rapidly spreading with the improvement of the performance of the PC. Furthermore, the digitalization of the AV equipment has allowed the liquid crystal display device to display not only computer images, It has begun to be used as a multimedia display that displays various media such as still images.
[0006]
Such a liquid crystal display device is provided as a thin box type by enclosing a liquid crystal module with a casing composed of a front case and a rear case, and in particular, a large screen has a thin casing. Since the case alone is not self-supporting, it is common to use a wall-hanging system, or to form a simple stand on the case, or to attach a display device to the base via an arm.
[0007]
In addition, it is shown by the design gazette in which the design registration No. 925825 was published as one of these Examples.
[0008]
[Problems to be solved by the invention]
Conventional liquid crystal display devices have begun to be used as multimedia displays, and the screens have become larger and higher in definition, but with this, the devices themselves have also become larger and occupy most of the desk. There is.
[0009]
In addition, the conventional PC is installed in a specific place, and the operator often sees the displayed screen information alone. However, by sharing information, a plurality of people can view the screen information at the same time. The number of scenes for making meetings based on the information has increased.
[0010]
For this reason, the PC itself is required to be portable, and further, the need for a liquid crystal display device that allows a plurality of people to view information displayed on the screen at the same time has increased due to the wide viewing angle. .
[0011]
However, the conventional liquid crystal display device has poor portability and does not support the diversification of usage scenes, and when a plurality of people view the screen information at the same time, they must look from the same direction. It was inconvenient to look away or overlap.
[0012]
Also, when using a liquid crystal display device in a specific place, the warm wind radiated from the equipment should have been taken into account when installing it, but if the usage scene diversifies, it can be used in any case There is a problem that good treatment must be easy to apply.
[0013]
Furthermore, although it was not so noticeable when the screen was small, there was a problem that the visual noise around the screen was annoying because the image displayed on the large screen became bright, clear and easy to see.
[0014]
Furthermore, conventionally, the operation buttons for brightness adjustment and phase adjustment have been arranged on the side or back side of the screen. However, when the liquid crystal display device is used as a multimedia display, the screen information is displayed as text. It is necessary to be able to easily perform luminance adjustment and phase adjustment suitable for such information.
[0015]
An object of the present invention is to provide a liquid crystal display device having good heat dissipation efficiency.
[0018]
[Means for Solving the Problems]
In the present invention, in order to achieve the above object, in a liquid crystal display device having a liquid crystal unit having a liquid crystal module and a base portion attached via an attachment portion disposed on the back surface of the liquid crystal unit, the liquid crystal unit is a liquid crystal unit. A front cover having an opening that exposes the module protection member and a back cover that covers the back of the front panel are formed. The back cover has a depth dimension on the lower surface side larger than a depth dimension on the upper surface side. And a heat radiating hole for intake formed on the upper surface side and a heat radiating hole for exhaust formed on the lower surface side, and the base portion supports the liquid crystal unit so as to be located above the upper surface of the base portion. The height adjustment plate is provided.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a liquid crystal display device according to the present invention will be described below with reference to the accompanying drawings. In addition, although the screen size of the liquid crystal module 21 of the present invention is described below as 13.3 inches, the present invention is not particularly limited to this, and may be smaller or larger than the above size.
[0025]
FIG. 1 is a front perspective view showing a first embodiment of the present invention. 2 is a perspective view seen from the rear showing the first embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along the line II of FIG. In the present invention, the display module protection member 3 side of the liquid crystal unit 1 is referred to as the front and will be described below.
[0026]
The first embodiment of the present invention is used by connecting to a PC (not shown), and the connection to the PC or the like is performed by an AC inlet plug 44 (to be described later), and a video signal is supplied from the PC or the like. And reproduced as an image on the liquid crystal module 21.
[0027]
First, the structure of the first embodiment of the present invention will be described with reference to FIGS. The liquid crystal unit 1 includes, for example, a liquid crystal module front cover 2 having an opening so as to expose the liquid crystal module protection member 3 made of transparent glass or a transparent acrylic sheet material, and the front side is the liquid crystal module front. The liquid crystal module back cover 4 has a protrusion that is substantially flush with the cover 2 and has a protrusion on the rear side that is smaller than the front, and a back cover 7 on the protrusion.
[0028]
Further, the rear side of the liquid crystal module back cover 4 is composed of a surface parallel to the liquid crystal module 21 and a surface inclined forward from the surface.
[0029]
On the other hand, a base portion 5 is provided below the liquid crystal unit 1, and a height adjustment plate 8 is provided in a vertical direction on the upper surface portion of the base portion 5, and the height adjustment plate 8 is a hinge mechanism 50. The liquid crystal unit 1 is supported by the height adjusting plate 8 so as to be positioned above the upper surface of the base portion 5.
[0030]
The liquid crystal unit 1 and the height adjustment plate 8 are detachable, and when the liquid crystal display device is moved to another place, the height adjustment plate 8 can be removed from the liquid crystal unit 1 to easily minimize the height. Since it can be set as a unit, a liquid crystal display device excellent in portability can be provided.
[0031]
The hinge mechanism 50 can change the angle of the liquid crystal unit 1 within the range of 15 degrees forward and 30 degrees backward from the state shown in FIG.
[0032]
Inside the liquid crystal module front cover 2 and the liquid crystal module back cover 4, a chassis 20 is disposed on the rear side of the liquid crystal module protection member 3, and on the front side of the chassis 20, a liquid crystal module 21 and buttons A substrate 23 and a main substrate such as an image adjustment substrate (not shown) are attached. ,
In addition, the liquid crystal module 21 includes fluorescent tube portions 22a and 22b as backlights at both upper and lower ends, and an inverter 27 for the fluorescent tube portion 22 is attached to the side.
[0033]
Further, an interface board 24, a power supply unit 25, an AC inlet 28, which will be described later, and a fan 26 for forced exhaust are attached to the rear side of the chassis 20.
[0034]
A power indicator 10, a back button 11, a select button 12, a menu button 13, menu selection buttons 14 and 15, and a save indicator 16 are arranged below the central portion on the front side of the liquid crystal module front cover 2, and the liquid crystal module back cover A power button 17 is arranged on the side surface of 4.
[0035]
When power is supplied in accordance with an instruction from the power button 17, the power indicator 10 is turned on to indicate that the power is on. When signal information from a PC or the like connected to the liquid crystal unit 1 is not sent, only the minimum power necessary to keep the liquid crystal module 21 warm is supplied, and at that time, the save indicator 16 is lit. When a signal is transmitted from a PC or the like, power necessary for expressing video information is automatically supplied to the liquid crystal module 21 and the power indicator 10 is turned on.
[0036]
Thus, when the power indicator 10 is lit with the power button 17 turned on, it can be confirmed that a signal from a PC or the like is being transmitted, while the save indicator 16 is lit. If it is, it can be confirmed that a signal from the PC or the like is not transmitted, so that it is possible to prevent the power to be turned off of the PC or the like and to confirm the transmission state.
[0037]
Further, for brightness adjustment and phase adjustment, an OSD menu screen is displayed on the liquid crystal module 21 in accordance with an instruction from the menu button 13, and the cursor is moved to an item requiring an operation instruction displayed by the menu selection buttons 14 and 15. The item is determined by the send / select button 12. When returning to the previous item after the selection is made, an instruction of the back button 11 is made. The OSD menu screen disappears automatically if there is no indication for a while.
[0038]
For this reason, after the luminance adjustment and the phase adjustment are completed, the normal screen is automatically returned without performing the next operation instruction, so that the normal operation can be quickly performed.
[0039]
Further, the OSD menu screen can be forcibly terminated by operating the menu button 13.
[0040]
It should be noted that the brightness of the liquid crystal module 21 can be adjusted by directly operating the menu selection buttons 14 and 15 while displaying a video signal from a PC or the like on the liquid crystal module 21.
[0041]
The above-described conversion of the video signal, video conversion of the signal, and other control can be realized by known means.
[0042]
Next, details of the liquid crystal module back cover 4 will be described.
[0043]
FIG. 4 is an exploded view of the first embodiment of the present invention. 5 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 6 is a cross-sectional view taken along the line III-III in FIG.
[0044]
First, in FIG. 4, the liquid crystal module back cover 4 has a portion covered with the back cover 7 formed of a plane parallel to the liquid crystal module 21, and the parallel screw has a unified screw hole 41 at the center in the vertical direction. It aligns with the positioning holes 42 for the unified screw and the base part set screw holes 9a, b, c, d through which the base part set screws 47a, 47b provided in the height adjusting plate 6 attached to the base part 5 pass. Height adjustment plate mounting holes 43a and 43b are provided at the positions.
[0045]
Further, an AC inlet plug 44 attached to the AC inlet cable 45 is provided with a video input terminal (not shown) to be connected buried in the parallel surface.
[0046]
When the AC inlet plug 44 is attached to the video input terminal, the surface of the AC inlet plug 44 is configured to be a surface that is the same as or less than the parallel surface. The video input cable 46 is also attached from the lower surface side of the liquid crystal unit 1.
[0047]
Due to such a configuration, the parallel surfaces can always provide a smooth surface.
[0048]
Further, on the rear side of the liquid crystal module back cover 4, a back cover 7 having a curved surface along the contours of the left and right curved surfaces on the rear side of the liquid crystal module back cover 4 is detachably provided. ing. At the left and right of the upper end of the back cover 7, attachment claws 8 a and b for attachment to the liquid crystal module back cover 4 are provided. The attachment claws 8 a and b are provided on the liquid crystal module back cover 4. The liquid crystal module back cover 4 is attached by being inserted into the claw insertion holes 40a and 40b.
[0049]
As a result, when used personally on a desk, it is used in a state of being attached to the base part 5, and by attaching the back cover 7 to the liquid crystal module back cover 4, Since the screw holes 9a, b, c, d, the AC inlet plug 44, and the like can be concealed, visual noise can be reduced, and furthermore, a smooth surface can be provided, so that cleaning is possible. The liquid crystal display device has no feeling of unevenness, so that it can be improved aesthetically, and the visual sense of human beings can be simplified. As a result, visual noise can be reduced.
[0050]
In addition, the back cover 7 and the base part 5 can be removed, and the liquid crystal module back cover 4 can be used as a flat place with the rear surface facing downward and the liquid crystal module front cover 2 facing upward. .
[0051]
At this time, as described above, since the parallel surface of the liquid crystal module back cover 4 always provides a smooth surface, the rear cover 7 and the base portion 5 are simply removed without any special treatment. Can provide stable flat use with simple work.
[0052]
Next, in FIG. 5 to FIG. 6, the arrangement of components built in the liquid crystal module front cover 2 and the liquid crystal module back cover 4 will be described.
[0053]
On the rear side of the chassis 20, the power supply unit 25 is disposed near the center of the liquid crystal unit 1, the AC inlet 28 is disposed on the side, and the liquid crystal interface board 24 is disposed on the other side.
[0054]
The power supply unit 25 is heavier and larger in depth than other components such as the liquid crystal interface board 24 and the AC inlet 28. By disposing the largest power supply unit 25 in the vicinity of the center position among the component parts, the outer dimensions of the liquid crystal unit 1 are the largest in the vicinity of the center position, and the other dimensions can be made smaller than that.
[0055]
Further, among the components, the heaviest power supply unit 25 is arranged in the vicinity of the center position, so that the stability of the display device is increased, and the height adjustment plate 8 and the hinge mechanism 50 are not excessively fatigued. The height adjusting plate 8 and the hinge mechanism 50 may be compact.
[0056]
In the first embodiment of the present invention, the power supply unit 25 is disposed at the center of the liquid crystal unit 1. However, the present invention is not particularly limited to this, and the liquid crystal unit 1 is built in the component parts. In such a mounted state, the heaviest component may be arranged.
[0057]
Next, the form of the liquid crystal module back cover 4 will be described with reference to FIGS.
[0058]
FIG. 7 is a diagram showing a flat state of the first embodiment of the present invention. FIG. 8 is a view showing a smooth surface of the liquid crystal panel back cover according to the first embodiment of the present invention, and FIG. 9 is a view showing another embodiment in which the liquid crystal display device is used in a flat position.
[0059]
Since the arrangement of the components as described with reference to FIGS. 5 to 6 is adopted, the liquid crystal module back cover 4 has the largest depth at the central portion, and the horizontal direction of the central portion is the central portion. The depth dimension can be made smaller.
[0060]
In the first embodiment of the present invention, the power supply unit 25 is disposed at the center of the liquid crystal unit 1. However, the present invention is not particularly limited to this, and the liquid crystal unit 1 is built in the component parts. In such a mounted state, a component having the largest depth dimension may be disposed.
[0061]
Therefore, in the first embodiment of the present invention, the lateral width w1 of the liquid crystal module front cover 2 is 365 mm in order to increase the stability in a state where the base portion 5 is removed and placed flat, The horizontal width w2 of the protrusion of the liquid crystal module back cover 4 is 334 mm, the horizontal width w3 of the smooth surface is 220 mm, and the horizontal width w4 of the curved surface is 57 mm. The height dimension h1 of the space between the smooth surface and the curved surface is 22 mm.
[0062]
Thereby, a space can be formed between the left and right direction of the liquid crystal unit 1 and the installation surface. When the liquid crystal unit 1 is placed at the installation location or when the installation location is moved, the finger can easily move the space. Can be inserted.
[0063]
That is, when a person lifts a heavy object, it is important to grasp the object to be lifted, and for that purpose, the first indirect of the index finger that grasps the object must be pushed into the lower part of the object to be lifted and certain force must be applied. In the first embodiment of the present invention, the first indirect of the index finger that easily grips the object due to the presence of the space can be inserted into the lower part of the object to be lifted.
[0064]
As a result, the liquid crystal unit 1 can be easily held, and the liquid crystal unit 1 can be provided without dropping the liquid crystal display unit 1 with high safety and good handling.
[0065]
In the case of a display screen having a ratio of 4: 3, the smooth surface of the liquid crystal module back cover 4 is near the center position of the liquid crystal module front cover 2 and about half of the dimension in the short direction. If so, the sense of stability is the best. In addition, since the first indirect length w5 of the standard index finger of an adult male is 22 mm, in order to secure a space into which the index finger can be inserted, the horizontal width w2 of the smooth surface is determined by the liquid crystal module 21. If the dimension h3 in the short direction is 284 mm and the dimension h4 is half of that dimension, from 142 mm to a maximum of 290 mm, the same effect as in the first embodiment of the present invention can be provided.
[0066]
When the display screen ratio is a wide screen (16: 9), in addition to the horizontal width w2 of the smooth surface, small projections or smooth surfaces 52a, By configuring b, it is possible to provide a liquid crystal display device with even better stability.
[0067]
Further, in FIG. 3, it has been described that the dimension in the height direction of the smooth surface of the liquid crystal module back cover 4 is located further from the lower center of the liquid crystal module back cover 4 than the vertical center position. However, the height dimension of the smooth surface may be in a range in which the width dimension w2 of the smooth surface is a diameter, and a liquid crystal display device with good stability can be provided.
[0068]
In addition, the smooth portion of the liquid crystal module back cover 4 has been described as a plane. However, the present invention is not particularly concerned with this, and h4, which is half the dimension h3 in the short direction of the liquid crystal module 21, is the diameter. The protrusion 51 may be configured near the center position of the liquid crystal module back cover 4, and in this case, the same effect as that of the first embodiment of the present invention can be provided.
[0069]
In addition, regarding the space dimension formed between the curved surface of the liquid crystal module back cover 4 and the installation surface, the diameter h2 of the standard index finger of an adult male is 10 mm, so a space for inserting the index finger is secured. Therefore, even if the height of the space between the smooth surface and the curved surface is at least 10 mm and the maximum is up to both ends of the protruding portion of the liquid crystal module back cover 4, the same effect as the present invention can be obtained. Can be provided.
[0070]
FIG. 9 shows another embodiment showing a good form when used as a flat place, but the form on the back side of the liquid crystal module back cover 4 needs to be composed of a smooth surface and a curved surface. 9A, the projections 53a and 53b having a large continuous curved surface and having a diameter h4 which is half the dimension h3 in the short direction of the liquid crystal module 21 are formed in the vicinity of the center position. By doing so, the same effect as the first embodiment of the present invention can be provided.
[0071]
Further, as shown in FIG. 9 (b), in the vicinity of the center position, a range having a diameter h4 that is half the dimension h3 in the short direction of the liquid crystal module 21 is a smooth surface, and the other surfaces are inclined inward. By configuring as a surface that has been made, the same effects as in the first embodiment of the present invention can be provided.
[0072]
Next, the flow of air in the liquid crystal unit 1 will be described.
[0073]
10A and 10B are diagrams illustrating the air flow of the liquid crystal unit 1. FIG. 10A is a diagram illustrating the air flow in FIG. 3, and FIG. 10B is a diagram illustrating the air flow in FIG.
[0074]
The liquid crystal unit 1 is composed of a rectangular liquid crystal module front cover 2 that covers the liquid crystal module 21 and a liquid crystal module back cover 4 that covers the power supply unit 25 and the like. Is disposed on the rear side of the chassis 20.
[0075]
The liquid crystal module back cover 4 has a shape based on a truncated cone, and the bottom surface has the most depth in the vertical direction of the liquid crystal unit 1, and from the center position in the vertical direction of the liquid crystal unit 1 from the bottom surface. The surface slightly up to the upper side is a surface parallel to the liquid crystal module 21, and the upper side where the parallel surface is finished is a surface inclined to the liquid crystal module 21 side. Further, in the lateral direction of the liquid crystal unit 1, a smooth surface is formed at the central portion, but curved surfaces are formed at the left and right ends.
[0076]
The heat radiation holes for heat radiation are provided with heat radiation holes 30a, 30b on the upper surface portion of the liquid crystal module back cover 4 protruding to the rear side and the inclined portion on the rear surface side and excluding the back cover 7. The lower surface portion of the liquid crystal module front cover 2 and the lower surface portion of the liquid crystal module back cover 4 are also provided with heat radiation holes 31a and 31b.
[0077]
Further, a forced exhaust fan 26 is formed above and in the vicinity of the heat radiation holes 31a and 31b.
[0078]
When used in a state of being attached to the base portion 5, the air sucked from the heat radiation holes 31 a and 31 b provided on the bottom surface having the deepest dimension of the liquid crystal front cover 2 and the liquid crystal module back cover 4 is supplied to the power supply unit 25. The air is exhausted out of the liquid crystal unit 1 through the heat radiation holes 30a and 30b while touching the heat radiation member.
[0079]
In particular, since the configuration of the liquid crystal module back cover 4 is configured to increase the depth dimension of the lower surface where air is sucked and reduce the dimension of the upper surface to be exhausted, the air sucked into the liquid crystal unit 1 is A device that rises naturally without being trapped in the liquid crystal unit 1 and has good heat dissipation efficiency can be provided.
[0080]
Further, since the laterally curved surface of the liquid crystal module back cover 4 is configured, the air sucked into the liquid crystal unit 1 gathers in the center, and a device with better heat dissipation efficiency can be provided.
[0081]
When the base unit 5 and the back cover 7 are removed from the liquid crystal unit 1 and used in a flat position, the heat radiating holes 30a and 30b are formed on an inclined surface, and the heat radiating holes 30a and 30b are always separated from the installation surface. Since the heat radiation holes 30a and 30b are always open, it is possible to provide a device with good heat radiation efficiency.
[0082]
In the first embodiment of the present invention, the fan 26 is described as being configured. However, the present invention is not particularly limited to this, and a device with good heat dissipation efficiency can be provided without the fan 26 being configured. can do.
[0083]
Next, a second embodiment of the present invention will be described with reference to the accompanying drawings. The same or equivalent members and parts shown in FIGS. 1 to 6 are denoted by the same reference numerals, and redundant description is omitted.
[0084]
FIG. 11 is a rear perspective view showing a second embodiment of the present invention.
[0085]
A smooth surface of the liquid crystal unit back cover 4 described above with reference to FIG. 4 is provided with a unified screw hole 41 (not shown). The back cover 7 and the height adjustment plate 8 are removed from the liquid crystal unit, and the unified screw hole 41 is removed. The tripod 60 can be attached via the unified screw 61.
[0086]
By fixing the liquid crystal unit back cover 4 with the tripod 60, the orientation of the liquid crystal module 21 (not shown) can be freely changed, so that a screen angle suitable for the working posture can be easily secured when one person is alone. Even when a plurality of people are arranged on four sides of the display device, the orientation of the liquid crystal module 21 can be quickly changed, so that every user's working posture and a plurality of users can share and use it. Can do.
[0087]
Next, a third embodiment of the present invention will be described with reference to the accompanying drawings. The same or equivalent members and parts shown in FIGS. 1 to 6 are denoted by the same reference numerals, and redundant description is omitted.
[0088]
FIG. 12 is a front perspective view showing a third embodiment of the present invention. FIG. 13 is a rear perspective view showing a third embodiment of the present invention.
[0089]
In the third embodiment of the present invention, a television tuner board, a speaker unit, and an audio adjustment board, which are not shown in the first embodiment of the present invention, are incorporated and shown as a liquid crystal television apparatus.
[0090]
The configuration and dimensional relationship of the liquid crystal module back cover 4 and the unillustrated unified screw holes 41 and the like arranged on a smooth surface are all the same as those in the first embodiment of the present invention.
[0091]
Speaker grills 70a and 70b are arranged at the left and right ends of the front lower portion of the liquid crystal module front cover 2. Between the speaker grilles 70a and 70b, a power indicator 71, a TV / external input switching button 72, and a TV channel are provided. Up button 73, TV channel down button 74, volume up button 75, volume down button 76, and light receiving unit 77 of a remote controller capable of instructing operation of a liquid crystal television apparatus (not shown). Has been.
[0092]
Further, a power button 17 is disposed on the side of the liquid crystal module back cover 4, and an AC inlet connected to an AC inlet cable 45 is provided on a smooth surface covered with the back cover 7 of the liquid crystal module back cover 4. The plug 44 and an external input plug 83 connected to a cable 82 connected to an external video / audio player such as a PC or a video tape recorder are configured.
[0093]
According to the third embodiment of the present invention, since the types of video information displayed by the liquid crystal unit 1 are diverse and audio information can be provided, the usage scene is further increased, and the first embodiment of the present invention is implemented. The same effect as the example can be provided.
[0094]
【The invention's effect】
As described above, according to the present invention, in the internal space in which the power supply unit is disposed, the depth dimension of the lower surface into which air is sucked is increased and the upper surface dimension to be exhausted is decreased. Air sucked into the unit rises naturally without being trapped in the liquid crystal unit, and can provide a device with good heat dissipation efficiency.
[Brief description of the drawings]
FIG. 1 is a front perspective view showing a first embodiment of the present invention.
FIG. 2 is a perspective view of the first embodiment of the present invention viewed from the rear.
3 is a cross-sectional view taken along the line II of FIG.
FIG. 4 is an exploded view of the first embodiment of the present invention.
5 is a cross-sectional view taken along the line II-II in FIG.
6 is a cross-sectional view taken along the line III-III in FIG.
FIG. 7 is a diagram showing a flat state of the first embodiment of the present invention.
FIG. 8 is a view showing a smooth surface of the liquid crystal panel back cover according to the first embodiment of the present invention.
FIG. 9 is a diagram showing another embodiment in which the liquid crystal display device is used as a flat place.
10 is a diagram showing the flow of air in the liquid crystal unit 1. FIG.
FIG. 11 is a rear perspective view showing a second embodiment of the present invention.
FIG. 12 is a front perspective view showing a third embodiment of the present invention.
FIG. 13 is a rear perspective view showing a third embodiment of the present invention.
[Explanation of symbols]
1 LCD unit
2 LCD module front cover
4 LCD module back cover
5 Base part
7 Back cover
8 Height adjustment plate
10 Power indicator
12 Select button
13 Menu button
16 Seven-dicator
20 Chassis
21 LCD module
25 Power supply unit
30 Heat dissipation hole
41 Unified screw hole
44 AC inlet plug
60 Tripod
61 Unified Screw
70 Speaker grill
82 External input cable.

Claims (4)

In a liquid crystal display device having a liquid crystal unit having a liquid crystal module and a base portion attached via an attachment portion disposed on the back surface of the liquid crystal unit,
The liquid crystal unit includes a front cover having an opening that exposes the liquid crystal module protection member, and a back cover that covers the back of the front panel,
The back cover is formed such that the depth dimension on the lower surface side is larger than the depth dimension on the upper surface side, and a heat radiation hole for intake formed on the upper surface side and a heat radiation hole for exhaust formed on the lower surface side. The base unit includes a height adjusting plate that supports the liquid crystal unit so as to be positioned above the upper surface of the base unit. The liquid crystal display device according to claim 1.
The back cover is dimensioned so that the front side thereof is substantially flush with the front cover, and the rear side has a protrusion having a smaller dimension than the front side,
The exhaust heat radiating hole is formed in an upper surface portion of the protruding portion, and the intake heat radiating hole is formed in a lower surface portion of the front cover and a lower surface portion of the back cover. . The liquid crystal display device according to claim 1.
The back side of the back cover is composed of a surface parallel to the liquid crystal module and an inclined surface inclined to the liquid crystal module side,
A liquid crystal display device, wherein a heat radiating hole for exhaust is formed in the inclined surface. The liquid crystal display device according to claim 1.
The liquid crystal unit forms an internal space with the front cover and the back cover, a chassis disposed on the rear side of the liquid crystal module protection member in the internal space, and a liquid crystal module disposed on the front side of the chassis And a power supply unit disposed at a lower part on the rear side of the chassis,
The liquid crystal display device, wherein the front panel covers a liquid crystal module, and the back cover is attached to cover a power supply unit.

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