JP4144424B2 - Display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device.
[0002]
[Prior art]
Conventionally, this type of display device is disclosed in Patent Document 1, for example. According to Patent Document 1, a display device including a power supply unit 100, an image driving unit 200, a signal processing unit 300, and the like is shown.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-287109 [0004]
[Problems to be solved by the invention]
However, since the apparatus does not have a storage means, there is a first drawback that a large amount of data cannot be read and written. In order to eliminate this drawback, the present inventor provided a hard disk driver in the main body. However, in order to remove the hard disk driver, about 30 bolts for fixing the rear plate of the main body must be removed, which has a second drawback that is troublesome.
[0005]
Furthermore, the present inventor has a third disadvantage that the cost increases because a dedicated mounting base for mounting the hard disk driver is provided. In view of the above-described drawbacks, the present invention provides a display device that can read and write a large amount of data, can easily attach and detach a storage device, and is inexpensive.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention of claim 1, a substantially box-shaped main body having a first opening formed on the rear surface side, a liquid crystal display section disposed on the front side of the main body, and the main body A board assembly that outputs an image signal to the liquid crystal display unit, a shield plate that covers the board assembly, and a hard disk driver that is fixed to the shield plate and reads and writes data. The first opening is detachably provided.
[0007]
According to a second aspect of the present invention, a cover for covering the first opening is provided, and the cover is provided detachably with respect to the main body.
[0008]
According to a third aspect of the present invention, a reinforcing plate that abuts against the opposing inner surfaces of the main body is provided, a mounting plate supported by the reinforcing plate is provided, and a circuit board that constitutes the board assembly is supported by the mounting plate. It was done.
[0009]
According to a fourth aspect of the present invention, a second opening is provided in the shield plate so as to be located below the hard disk driver, and a memory is fixed to the circuit board so as to be located below the second opening. The memory is detachable.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
First, the electrical configuration of the display device 1 according to the embodiment of the present invention will be described with reference to the electrical block diagram of FIG. In FIG. 1, a terminal 2 is a component that receives a signal from the outside, and includes, for example, a USB connector, an RJ45 connector, an RS232C connector, or the like. For example, the terminal 2 is connected to one end of a LAN line (not shown), and the other end of the LAN line is connected to the Internet via a server (not shown).
[0011]
The signal processing unit 3 includes, for example, a CPU, a communication interface, an input unit, a signal conversion unit, and the like. When a predetermined input is made to the input unit, the CPU requests predetermined image information (for example, advertisement information) from a provider server (not shown) connected to the Internet.
[0012]
The image information is input to the signal processing unit 3 via the Internet, the server, the LAN line, and the terminal 2. The signal processing unit 3 converts the input image information into image data (digital values of R, G, B) according to an image size (for example, 29 inches) of a liquid crystal panel (described later), and sends the above information to the transmitter 5. Output data.
[0013]
The transmitter 5 converts the input image data into an image signal, that is, a low level differential transmission signal LVDS (Low Voltage Differential Signal), and outputs the image signal to the drive unit 6.
[0014]
The DC-DC converter 7 is a component that outputs predetermined DC voltages (for example, 12 V, 5 V, and 3.3 V) when a DC voltage (for example, 14 V) is input. In this way, the DC-DC converter 7 outputs a predetermined voltage to the signal processing unit 3, the transmitter 5, and the driving unit 6, respectively. The RAM 3 a is connected to the signal processing unit 3.
[0015]
The terminal 2, the signal processing unit 3, the transmitter 5, the DC-DC converter 7, and the RAM 3 a are fixed on each wiring pattern provided on the circuit board 8 via solder or the like. A board assembly 9 is constituted by the terminals 2, the signal processing unit 3, the transmitter 5, the DC-DC converter 7, the RAM 3a, the circuit board 8, and the like.
[0016]
The liquid crystal panel 4 is made of, for example, a liquid crystal sealed in two glass plates. A plurality of source electrodes and a plurality of gate electrodes are formed in a matrix on the surface of the lower glass plate, and each TFT is formed for each pixel.
[0017]
The drive unit 6 includes, for example, a saw driver and a gate driver. The source driver is connected to the plurality of source electrodes. The gate driver is connected to the plurality of gate electrodes. Thus, the drive unit 6 drives each source electrode and each gate electrode provided on the liquid crystal panel 4.
[0018]
The backlight 10 illuminates the liquid crystal panel 4. The inverter 11 drives the backlight 10. The liquid crystal display unit 12 is configured by the liquid crystal panel 4, the drive unit 6, the backlight 10, the inverter 11, and the like.
[0019]
Thus, the board assembly 9 outputs the image signal LVDS to the liquid crystal display unit 12.
[0020]
The output side of the plug 13 is connected to the first power supply unit 15 and the second power supply unit 16 via the connector board 14. Both the first power supply unit 15 and the second power supply unit 16 are composed of a transformer, a rectifier circuit, and the like, and supply a DC voltage having a predetermined voltage.
[0021]
That is, the first power supply unit 15 supplies predetermined power to the backlight 10 of the liquid crystal display unit 12. The second power supply unit 16 supplies predetermined power to the drive unit 6 of the liquid crystal display unit 12 via the DC-DC converter 7.
[0022]
The hard disk driver 17 can read and write data and has a large storage capacity. The hard disk driver 17 is connected to the signal processing unit 3.
[0023]
The memory 18 is a flash memory, for example, and is connected to the signal processing unit 3. The electrical configuration of the display device 1 is made up of the above components.
[0024]
Next, the mechanical configuration of the display device 1 will be described with reference to FIGS. 2 is an exploded perspective view of the display device 1, FIG. 3 is a perspective view of the display device 1 with the rear plate removed, and FIG. 4 is a cross-sectional view taken along line A1-A2 of FIG.
[0025]
In these drawings, the frame 19 is made of, for example, a stainless steel plate, and is formed in a substantially frame shape when viewed from above, and is formed in a shape in which the front surface side and the back surface side are opened. A plurality of bent portions are formed at appropriate positions on the rear surface side C of the frame 19.
[0026]
The reinforcing plates 20, 21, and 22 are both made of, for example, an aluminum extrusion material, and are formed in a substantially rectangular parallelepiped shape when viewed from a plane.
[0027]
One end surface of each of the reinforcing plates 20, 21, 22 is in contact with the inner surface of the frame 19. The other end surface of each of the reinforcing plates 20, 21, 22 is also in contact with the inner surface of the frame 19. In this way, the reinforcing plates 20, 21, and 22 are in contact with the opposing inner surfaces of the frame 19 and are fixed by bolts or the like.
[0028]
The cooling fan 23 includes, for example, a fan, a fan casing, a motor, and the like. The left end of the cooling fan 23 is fixed to the reinforcing plate 20 with a bolt.
[0029]
The cooling fan 24 includes, for example, a fan, a fan casing, a motor, and the like. The right end of the cooling fan 24 is fixed to the reinforcing plate 21 with a bolt.
[0030]
The mounting plate 25 is made of, for example, a metal plate, and the left end is fixed to the reinforcing plate 20 via a fixing plate 26, and the right end is fixed to the reinforcing plate 21 via a fixing plate 27. In this way, the mounting plate 25 is supported by the reinforcing plates 20 and 21.
[0031]
The second power supply unit 16 is attached to the fixed plate 28. The first power supply unit 15 is attached to the fixed plate 29.
[0032]
The liquid crystal display unit 12 includes, for example, a 29-inch liquid crystal panel 4 and a plurality of backlights 10 and the like, and the outer shape is a substantially rectangular parallelepiped. The liquid crystal display unit 12 is fixed to the inner surface of the frame 19 with bolts or the like. A transparent plate 30 is disposed on the front side B of the liquid crystal display unit 12 via packing.
[0033]
The casing 31 is made of, for example, a metal plate and is formed in a bottomed box shape. An opening 32 is formed on the front side B of the casing 31. The transparent plate 30 and the liquid crystal display unit 12 are configured to be visible from the front to the user through the opening 32.
[0034]
A hole is formed in the side surface of the casing 31, and the bolt penetrates the hole, is provided in the frame 19, and is fixed to the threaded hole. The casing 31 is provided so as to cover the frame 19 and the liquid crystal display unit 12.
[0035]
The rear plate 33 is made of, for example, a metal plate or the like and is formed so as to cover the rear surface side C of the frame 19. A bolt (not shown) passes through a hole formed in the rear plate 33 and is fixed to a hole located at a bent portion of the frame 19.
[0036]
In this way, the rear plate 33 is fixed to the opened rear side C of the casing 31. The main body 34 is constituted by the frame 19, the rear plate 33, the casing 31, and the like.
[0037]
As described above, the liquid crystal display unit 12 is disposed on the front side B of the main body 34, and the substrate assembly 9 is disposed in the main body 34.
[0038]
Next, the features of the display device 1 will be described with reference to FIGS. In these drawings, a first opening 35 is formed at an appropriate position of the rear plate 33.
[0039]
The main body 34 includes the frame 19, the casing 31, and the rear plate 33. An opening 32 is formed on the front side B of the casing 31. That is, the main body 34 is substantially box-shaped with the first opening 35 formed on the rear side C.
[0040]
Around the first opening 35 of the rear plate 33, flanges 36, 37, and 38 are formed. The cover 39 is made of, for example, a metal plate and has a stepped shape. The stepped portion (in the vicinity of the tip) of the cover 39 abuts on the inner surface of the rear plate 33, and the cover 39 is placed on the flanges 36, 37, and 38. Two bolts (not shown) pass through the hole formed in the cover 39 and are fixed to the hole formed in the flange 38.
[0041]
That is, a cover 39 that covers the first opening 35 of the rear plate 33 is provided. The cover 39 is detachably attached to the main body 34.
[0042]
Reinforcing plates 20 and 21 are provided so as to come into contact with the opposing inner surface of the main body 34 (specifically, the inner surface of the frame 19 facing each other). The mounting plate 25 is supported by the reinforcing plates 20 and 21.
[0043]
The circuit board 8 constituting the board assembly 9 is supported (fixed) by the mounting plate 25 via spacers 40 and 41 (see FIG. 4).
[0044]
The shield plate 42 is made of, for example, a plate material that shields electromagnetic waves, and has a substantially box shape. In this way, the shield plate 42 is attached to the circuit board 8 or the attachment plate 25 so as to cover the board assembly 9.
[0045]
For example, a casing made of a metal plate is formed on the outside of the hard disk driver 17. The casing has three flanges, and each flange has a hole (see FIG. 3).
[0046]
The hard disk driver 17 is placed at a designated position on the shield plate 42. The three bolts pass through the holes formed in the hard disk driver 17 and are fixed to the holes formed in the shield plate 42 (see FIG. 3).
[0047]
When removing the hard disk driver 17, the two bolts fixing the cover 39 are removed, and the cover 39 is removed. Then, the three bolts fixing the hard disk driver 17 can be removed, and the hard disk driver 17 can be removed.
[0048]
In this way, in the display device 1, the hard disk driver 17 can be removed by removing the cover 39 without removing the entire rear plate 33. That is, the hard disk driver 17 is detachably provided through a first opening 35 formed in the main body 34.
[0049]
A second opening 43 is formed in a portion of the shield plate 42 located below the hard disk driver 17 (see FIG. 2). The memory 18 is fixed on the circuit board 8 so as to be positioned below the second opening 43.
[0050]
In order to remove the memory 18, first, the cover 39 is removed and the hard disk driver 17 is removed. Next, the memory 18 can be removed from the circuit board 8. When the memory 18 is to be attached, the memory 18 is first attached on the circuit board 8. Next, the hard disk driver 17 may be attached on the shield plate 42 and the cover 39 may be attached on the main body 34.
[0051]
In this manner, the memory 18 is detachably provided by fixing the memory 18 on the circuit board 8 so as to be positioned below the second opening 43 of the shield plate 42.
[0052]
【The invention's effect】
According to the first aspect of the present invention, a substantially box-shaped main body having a first opening formed on the rear surface side, a liquid crystal display section disposed on the front surface side of the main body, and the liquid crystal display disposed in the main body. A board assembly that outputs an image signal to a section, a shield plate that covers the board assembly, and a hard disk driver that is fixed to the shield board and reads / writes data, the hard disk driver via the first opening , Detachable. As described above, by providing the hard disk driver in the main body, a large amount of data can be read and written, a large amount of image information can be taken in via, for example, the Internet, and a large amount of image information can be displayed. Further, when removing the hard disk driver, it may be performed through a partial small window (first opening) formed in the main body, and the attachment / detachment work is easy. Further, since the hard disk driver is fixed on the shield plate, it is not necessary to provide a new mounting base, and the cost can be reduced.
[0053]
According to a second aspect of the present invention, a cover for covering the first opening is provided, and the cover is provided detachably with respect to the main body. In this way, by providing a cover, it is only necessary to work through a partial small window (first opening), and the hard disk driver can be attached and detached more easily.
[0054]
According to a third aspect of the present invention, a reinforcing plate that abuts against the opposing inner surfaces of the main body is provided, a mounting plate supported by the reinforcing plate is provided, and a circuit board that constitutes the board assembly is supported by the mounting plate. It was done. With the above configuration, the reinforcing plate improves the strength of the main body and supports the circuit board via the mounting plate, so that the circuit board is securely fixed. As a result, the electrical components on the circuit board do not rattle and the quality reliability is improved.
[0055]
According to a fourth aspect of the present invention, a second opening is provided in the shield plate so as to be located below the hard disk driver, and a memory is fixed to the circuit board so as to be located below the second opening. The memory is detachable. With the above configuration, the memory can be easily attached and detached. Further, since the memory is fixed on the circuit board and the second opening formed in the shield plate is closed by the hard disk driver, the shielding property can be maintained.
[Brief description of the drawings]
FIG. 1 is an electrical block diagram of a display device 1 according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the display device 1. FIG.
FIG. 3 is a perspective view of the display device 1 when a rear plate 33 is removed.
4 is a cross-sectional view taken along line A1-A2 of FIG.
[Explanation of symbols]
9 Substrate assembly 12 Liquid crystal display 17 Hard disk driver 34 Main body 35 First opening 42 Shield plate

Claims (4)

A substantially box-shaped main body having a first opening formed on the rear surface side, a liquid crystal display section disposed on the front side of the main body, and a substrate disposed in the main body and outputting an image signal to the liquid crystal display section An assembly, a shield plate covering the board assembly, and a hard disk driver fixed to the shield plate for reading and writing data, the hard disk driver being provided detachably through the first opening. A display device. The display device according to claim 1, wherein a cover that covers the first opening is provided, and the cover is detachable from the main body. The circuit board which comprises the reinforcement board which contact | abuts the inner surface which the said main body opposes, and is supported by the said reinforcement board, and comprises the said board assembly is supported by the said attachment board, It is characterized by the above-mentioned. Item 4. The display device according to Item 1. A second opening is provided in the shield plate so as to be positioned below the hard disk driver, a memory is fixed to the circuit board so as to be positioned below the second opening, and the memory is detachable. The display device according to claim 3, wherein the display device is provided.

Images