JPH1152884A - Freely storable display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily secure the grounding for a driving circuit unit and to reduce the backlash caused by many number of pulling outs and storing operations by engaging the projected rails located on the inner side surfaces of a storage case and the recessed rails located on the outer side surfaces of a liquid crystal display unit. SOLUTION: A liquid crystal monitor unit 11 is movably fitted freely forwards and backwards to a storage case 12 from its opening port and held by a slide mechanism 13. The mechanism 13 is constituted of projected rails 13b, which are made of plastics and provided on inner side surfaces 14 of the case 12, and recessed rails 13a which are provided on outer side surfaces 15 of a liquid crystal monitor unit 11. The rails 13b are fixed to the holes provided on a portion of a metallic case. The rails 13a are arranged on a liquid crystal display unit 11a and not mounted outside the unit 11a. Note that a manufacturing process is beforehand performed so that the rails 13b are provided on the case itself of the unit 11a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable display device for discharging and storing a liquid crystal monitor, and more particularly to a retractable display device using a large-screen liquid crystal display unit.

[0002]

2. Description of the Related Art In recent years, thin displays such as liquid crystal monitors have been increasingly used for vehicles.
For example, in-vehicle televisions and GPS (global posi)
It is used for a display device of a switching system. Furthermore, personal computers and the like used in automobiles have also begun to appear, and the chances of using a liquid crystal monitor in a mobile body such as an automobile have become extremely large. A liquid crystal monitor display device capable of storing the liquid crystal monitor has also been developed. This is because the liquid crystal monitor can be effectively used in a narrow space in the moving body by storing and putting the liquid crystal monitor in a state where the liquid crystal monitor is always exposed in the car.

Here, a conventional storable display device will be described with reference to FIGS. FIG. 5 is a diagram showing a use state of a conventional storable display device 50. In the figure, the liquid crystal display unit 51a is disposed at an inclined position so that the liquid crystal display unit 51a is ejected from the storage part and stands up so that the driver can easily see it. FIG. 8 shows this state.
The liquid crystal display drive circuit unit 51b is stored. FIG. 5 shows such a retractable display device 50.
Are shown over time as (a), (b), and (c). (A) shows a state in which the display unit 51a is laid down horizontally after the use state is finished, and (b) shows a state in which the display unit 51a is gradually placed inside the storage case 52 from that state.
FIG. 3C shows a state in which the display unit 51a is completely stored in the storage case 52. FIG.

[0004] Here, the display unit 5
A slide mechanism for storing 1a in the storage case 52 will be described. FIG. 6 shows the slide mechanism. FIG. 6A shows a state in which the display unit 51a in FIG. 5 is completely housed in the storage case 52, and the liquid crystal monitor unit 51 is generally shown in FIG. The liquid crystal display unit 51a and the liquid crystal monitor drive circuit unit 51b as shown in FIGS. 6B and 6C show the case inner side surface portion 56 of the liquid crystal display unit 51a and the liquid crystal monitor drive circuit unit 51b, respectively. Slide mechanism 57
It shows. FIG. 1B shows a sliding mechanism 57 portion between the outer surface 55 of the liquid crystal display unit and the inner surface 56 of the storage case, in which a groove is formed in the inner surface 56 of the storage case. Only the concave rails 57a are provided, and no rails are provided on the outer side surface 55 of the liquid crystal display unit. Therefore, the liquid crystal display unit 51a is held in the storage case 52 by being fixed to the liquid crystal monitor drive circuit unit 51b of the liquid crystal monitor unit 51.

Next, as shown in FIG. 6 (c), a slide mechanism 57 between the liquid crystal monitor drive circuit unit 51b and the storage case inner side surface 56 has a concave shape formed with a groove formed in the storage case inner side surface 56. Rail 57a and convex rail 57 formed on outer surface 55 of LCD monitor drive circuit unit
and the LCD monitor drive circuit unit 51b supported by the convex rail 57b along the concave rail 57a.
2 slides inside. To further explain, the inner side surface 56 of the storage case is generally made of a metal material to secure the ground of the liquid crystal monitor drive circuit unit 51b of the liquid crystal monitor unit 51. On the other hand, the concave rail 57a and the convex rail 57b are often formed of plastic for reasons such as easy processing. The inner surface 5 of the storage case
6 is made of metal, it is difficult to process it into a concave rail 57a. For this reason, a separate concave rail 57a is provided on the inner side surface 56 of the storage case so that the liquid crystal monitor unit 51 is slid. ing.

Incidentally, this concave rail is further shown in FIG. 7, and as shown in FIG.
The minimum thickness d1 of a is required from the viewpoint of the strength of the rail and the like. That is, since the concave rail 57a is provided over substantially the entire length of the storage case,
The storage case must not be strong enough to be damaged by distortion or the like, and it is necessary to secure a constant thickness d1 from the viewpoint of hanging. In FIG. 7A, d2 is the width of the groove, which corresponds to the width of the convex rail provided on the liquid crystal monitor unit. by the way,
It is conceivable that the concave rail provided on the inner side surface of the storage case is configured as shown in FIG. 7B. However, in order to achieve such a configuration, the upper portion 57c and the lower portion 57d in FIG. 7B must be separately mounted, which causes a problem of mounting accuracy and a problem of the strength described above. It was not the preferred method due to problems.

Incidentally, when such a retractable display device is provided in an automobile or the like, its occupied volume,
In particular, its width is limited. This is because the standard for arranging such a device is limited by DIN or the like, and it is difficult to secure a sufficient occupied volume in the interior of a vehicle such as an automobile. That is, the width of the liquid crystal display unit is limited by the width of the storage case,
It is limited not only by the width of the storage case but also by the width of the guide rail provided in the storage case.
Therefore, the larger the width of the guide rail, the smaller the width that can be actually occupied by the liquid crystal display unit and the liquid crystal monitor drive circuit unit.
These hinder the enlargement of the screen of the liquid crystal display unit of the liquid crystal display device, and make it difficult to secure a sufficient volume occupied by the liquid crystal monitor drive circuit unit of the liquid crystal display device.

In the conventional storable device shown in FIG. 8, the liquid crystal display unit is used upright. In this state, the liquid crystal display unit 51a becomes operable, and is used as, for example, a GPS display device or a television screen. When the liquid crystal display unit 51a is stored, it is necessary to lay the liquid crystal display unit 51a standing upright again and push it into the storage case 52 to completely store the liquid crystal display unit 51a. Therefore, it is necessary to repeat such an in / out operation very many times, and from this viewpoint, the slide mechanism must have a small backlash.

[0009]

As described above, the conventional storable display device employs concave rails provided on both sides of the storage case as a support mechanism for the liquid crystal display unit. The width that can be secured is limited by the thickness of the guide rail. Therefore, in a situation where the liquid crystal screen is becoming larger and a larger liquid crystal screen is desired as in recent years, a thin rail is desired in order to enlarge the liquid crystal monitor unit, especially the liquid crystal display unit. It was difficult to achieve this.

In such a conventional slide mechanism, it is necessary to provide a concave rail on the inner surface of the storage case. Therefore, a very large portion of the inner surface of the storage case is formed by the plastic material as the concave rail. In order to secure the ground in the LCD monitor unit, especially the LCD monitor drive circuit unit because it is occupied, it is necessary to secure a part that is not hidden by this concave rail, and the storage case as a whole contradicts the demand for miniaturization Had become. In addition, in the conventional liquid crystal monitor unit, the rail is not provided in the liquid crystal display unit portion, and there is a problem that as a result of a large number of drawers and storages, rattling occurs and the side surface is scratched.

Furthermore, since the conventional liquid crystal monitor unit generally has a structure in which both side surfaces of the liquid crystal monitor unit are supported by guide rails, there is a problem that play is likely to occur as a result of a large number of drawer storages as described above. There was also.
Accordingly, in the present invention, a storable display unit that solves these problems and secures a large liquid crystal screen, and a storable display unit that facilitates securing the grounding of the liquid crystal monitor drive circuit unit among the storable display units, An object of the present invention is to provide a storable display unit with less rattling even when the drawer is stored.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a liquid crystal display unit, a storage case for storing the liquid crystal display unit, and the liquid crystal display unit inserted into the storage case through a storage case opening. A retractable display device comprising a slide mechanism attached to the storage case, wherein the slide mechanism includes a convex rail provided on an inner surface of the storage case and a concave rail provided on an outer surface of the liquid crystal display unit. Provided is a retractable display device that is engaged with a rail. A ground potential is secured on the inner surface of the storage case, and a contact is provided on a part of the outer surface of the liquid crystal display unit to contact the inner surface of the storage case to ground the liquid crystal display unit. A retractable display device is provided.

Further, the liquid crystal display unit comprises:
The liquid crystal monitor unit and the liquid crystal display driving circuit unit are hingedly connected, and when the liquid crystal display unit is activated, the liquid crystal monitor unit is pulled out of the storage case and stands up. A retractable display device provided with the concave rail is provided. Further, the storage device includes a liquid crystal display unit, a storage case for storing the liquid crystal display unit, and a slide mechanism for attaching the liquid crystal display unit to the storage case so that the liquid crystal display unit can advance and retreat from a storage case opening. The slide mechanism unit provides a retractable display device in which convex rails provided on upper and lower inner surfaces of the storage case are engaged with concave rails provided on upper and lower outer surfaces of the liquid crystal display unit. I do.

A ground potential is secured on the upper and lower inner surfaces of the storage case, and a contact is provided on a part of the upper and lower outer surfaces of the liquid crystal display unit to make contact with the upper and lower inner surfaces of the storage case. Provided is a retractable display device for grounding a display unit. In addition, the present invention provides a storable display device in which a plurality of the convex rails and the concave rails are provided on upper and lower surfaces of the storage case and the liquid crystal display unit, respectively.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be described below with reference to the drawings. According to the first aspect of the present invention, as described above, the liquid crystal monitor unit, the storage case that stores the liquid crystal monitor unit, and the slide mechanism that attaches the liquid crystal monitor unit to the storage case so as to be able to advance and retreat from the storage case opening. A retractable display device comprising:
The slide mechanism is a retractable display device formed by engaging a convex rail provided on an inner surface of the storage case with a concave rail provided on an outer surface of the liquid crystal monitor unit.

The storable display device according to the first aspect is as shown in FIG. That is, FIG.
As shown in the figure, the liquid crystal monitor unit 11 is attached to the storage case 12 so as to be able to advance and retreat from its opening.
The liquid crystal monitor unit 11 itself is held by the slide mechanism 13 with respect to the storage case 12. The slide mechanism 13 is composed of a convex rail provided on the inner side surface 14 of the storage case and a concave rail provided on the outer side surface of the liquid crystal monitor unit. (B) and (c) of FIG. 1 show an enlarged cross section of FIG. Describing FIG. 1B in detail, a convex rail 13b made of plastic or the like is provided on the inner side surface 14 of the storage case. This convex rail 1
Although not shown, the material 3b is fixed by crushing the material while heating it by passing the material through a hole formed in a part of the metal case.

The inner surface 14 of the storage case is generally made of a metal material or the like, but may be formed of a guide frame or the like set on a storage case main body (not shown). The liquid crystal display unit 11a is provided with a concave rail 13a which has not been provided conventionally. This concave rail 1
3a is not externally attached to the liquid crystal display unit 11a, but is
The housing itself is provided with this concave rail 13a,
It has been processed in advance. Such processing can be performed because the housing of the liquid crystal display unit 11a is generally made of a plastic material or the like, so that it is easy to perform such processing. (B)
The cross-sectional shapes of the convex rail 13b and the concave rail 13a shown in are not limited to this, and the convex rail has a trapezoidal shape, and the concave rail meshes with it, The convex rail may have an inverted trapezoidal shape, and the concave rail may mesh with the inverted rail.

FIG. 1C shows a concave rail 17 on the outer surface 16 of the liquid crystal display drive circuit unit 11b.
Provided so as to mesh with the convex rail 13b provided on the inner side surface 14 of the storage case.
In the case of (b), the outer surface 15 of the liquid crystal display unit 11a itself can be processed into a concave rail shape. However, when a concave rail is provided in the drive circuit portion, the drive circuit unit is generally used. Since the outer surface is made of a metallic material, it is difficult to process the outer surface. A concave rail 17 is formed separately on the outer surface 16 of the drive circuit unit. The concave rail 17 and the convex rail 13b may be made of plastic as described above.
The liquid crystal display unit 11a and the drive circuit unit 11b are connected by a hinge 19. Here, the fact that the width of the liquid crystal monitor unit can be actually reduced by using (b) and (c) will be described with reference to FIG.

2 (a), 2 (b), 2 (c) and 2 (d) are diagrams for explaining the effect of the first aspect of the present invention, wherein (a) and (b) are liquid crystal displays. Unit 21a,
(C) and (d) show the structure of the outer surface portion of the liquid crystal display drive circuit units 21b and 51b, respectively. First, (a) and (b) will be described. FIG. 2A shows an outer side portion 55 of a liquid crystal display unit 51a of a conventional storable display device. As described above, this portion 55 is provided with a concave groove on the inner side surface of the storage case 52, but no rail is provided on the outer side surface 55 of the display unit so as to mesh therewith.

On the other hand, for comparison, the liquid crystal display unit portion 2 of the retractable display device according to the present invention with the inner surface of the storage case at the same position.
(B) shows 1a. In this case, as described above, the convex rail 23b is provided on the inner surface 24 of the storage case, and the outer surface 25 of the liquid crystal display unit is processed so as to form the concave rail 23a.
Then, in this state, (a) and (b) are compared, and if the outermost surface position of the liquid crystal display unit is compared, the amount indicated by d3 is:
It can be seen that the retractable liquid crystal display unit according to the present invention was able to secure the width. As described above, the extra width of d3 can be ensured because the conventional one requires a concave rail on the inner surface of the storage case and the concave rail has a large thickness, whereas the conventional one requires the storage rail. This is because it is only necessary to form a convex rail on the inner surface of the case, so that the thickness is smaller than that of the conventional case.

It is needless to say that this convex rail must be thick enough to secure sufficient strength. Next, (c) and (d) will be compared. As described above, (c) and (d) show the slide mechanism of the liquid crystal display unit drive circuit portions 51b and 21b in the conventional and the retractable display device of the present invention.
(C) is the conventional one and (d) is the one according to the present invention. In the case of (c), as in (a) and (b), the inner side surface of the storage case is set at the same position, and the width corresponding to d4 in the figure is the width of the present case when comparing the conventional case and the present case. It can be seen that an extra is secured in. As described above, the extra width of the liquid crystal display unit drive circuit can be ensured in the present invention because the width of the concave guide rail can be made thinner than the conventional one.

As described above, the present invention can make the concave rail thinner than the conventional one because the conventional one needs to provide the guide rail over the entire inner surface of the storage case. Although a certain thickness was required for the guide rail because of the necessity of securing the strength of the rail, in the case of the present invention, the portion where the concave guide rail is provided is not the inner surface of the storage case but the retractable display device, particularly the storage device This is because only the liquid crystal display drive circuit unit of the flexible display device needs to be provided.

That is, compared to the conventional one, the one of the present invention requires a shorter length of the need to provide the concave rail, so that
The deflection can be reduced, and the mechanical strength required for the concave rail can be reduced, so that the thickness can be reduced. In the case where the guide frame is further provided on the inner surface of the storage case using the guide frame as described above, the guide frame is also provided on the guide frame because the guide frame is extremely bent. Although the mechanical strength of the concave rail had to be increased, in the case of the present invention, there is no such a problem, so that the thickness of the concave rail can be reduced.

Next, the invention according to claim 2 will be described. The invention according to claim 2 is characterized in that the inner surface of the storage case is
2. The retractable display device according to claim 1, wherein a ground potential is secured, and a contact is provided on a part of an outer surface of the liquid crystal monitor unit to make contact with an inner surface of the storage case to ground the liquid crystal monitor unit. It is. As described above, since the concave rail of the conventional storable display device is provided over the entire length of the inner surface of the storage case, it is provided over the entire length of the inner surface of the storage case, and the vertical width is sufficiently large. The metal surface on the inner surface of the storage case was few exposed because it had to be taken off.In order for the liquid crystal display drive circuit unit to secure ground from the inner surface of the storage case, secure an extra area. I had to take the ground.

However, in the case of the present invention, only the convex rail is provided on the inner surface of the storage case, and a large amount of metal surface on the inner surface of the storage case is exposed. This facilitates the securing, and eliminates the need for taking a large amount of metal surface on the inner surface of the storage case. This is as shown in FIG. 3, and a contact 38 may be provided on a part of the liquid crystal monitor unit or the liquid crystal display unit 31a of the liquid crystal display device, and this may be brought into contact with the inner surface 34 of the storage case. The contact 38 may be, for example, an elastic spring. In this case, there is no need to secure an unnecessary metal surface on the inner side surface 34 of the storage case, so that there is an advantage that the overall weight is reduced and the material cost is low.

Next, the third aspect of the present invention will be described. As described above, according to the third aspect of the present invention, in the liquid crystal monitor unit, the liquid crystal display unit and the liquid crystal display drive circuit unit are hinged and the liquid crystal display unit is pulled out of the storage case when the liquid crystal monitor unit is activated. The retractable display device according to claim 1, wherein the concave rail is provided in both the liquid crystal display unit and the liquid crystal display drive circuit unit.

Since the present invention has already been described at the same time as the description of the first aspect of the present invention, the description thereof is omitted, but the concave grooves are formed in both the liquid crystal display unit and the liquid crystal display driving circuit unit. By providing the liquid crystal monitor unit, even if the liquid crystal monitor unit is pulled out and stored many times, the rattling of the liquid crystal monitor unit is reduced, and there is a great advantage that the durability of the retractable display unit can be sufficiently ensured. . Further, by adopting the guide mechanism according to claim 1, even when the rail is provided in the liquid crystal monitor unit portion, the width of the liquid crystal monitor unit can be sufficiently secured, so that a large liquid crystal screen is provided. It does not impede the requirement to secure

Next, the invention according to claim 4 will be described. According to a fourth aspect of the present invention, as described above, a liquid crystal monitor unit, a storage case for storing the liquid crystal monitor unit, and a slide mechanism for attaching the liquid crystal monitor unit to the storage case so as to be able to advance and retreat from the storage case opening. Wherein the slide mechanism comprises: a convex rail provided on upper and lower inner surfaces of the storage case; and a concave rail provided on upper and lower outer surfaces of the liquid crystal monitor unit. It is a retractable display device that is meshed. As described above, the slide mechanism for attaching the liquid crystal monitor unit to the storage case so as to be able to move back and forth is not only a method of guiding only by the side surface but also a method of guiding by the upper and lower surfaces as in the present invention.

In such a case, the width direction can be sufficiently secured to the inner side of the storage case as the liquid crystal monitor unit, so that it is possible to meet the demand for a large screen. Further, by providing the convex rail and the concave rail on the upper and lower surfaces and the convex rail on the storage case side and the concave rail on the liquid crystal monitor unit side in this manner, the same effects as the inventions according to claims 1 to 3,
That is, it is possible to ensure a sufficient thickness of the liquid crystal monitor unit. Accordingly, since the maximum width and the maximum thickness can be ensured, a sufficiently large volume can be ensured in the retractable display device.

Next, the invention according to claim 5 will be described. According to a fifth aspect of the present invention, as described above, a ground potential is secured on the inner upper and lower surfaces of the storage case. 5. The retractable display device according to claim 4, wherein said liquid crystal monitor unit is grounded by being in contact with upper and lower surfaces. When such a configuration is employed, there is an advantage that it is extremely easy to secure the ground because the storage cases on the upper and lower surfaces have a large area.

Next, the invention according to claim 6 will be described. As described above, in the invention according to claim 6, the convex rail and the concave rail are respectively provided in the storage case,
5. The retractable display device according to claim 4, wherein a plurality of lines are provided on upper and lower surfaces of the liquid crystal monitor unit. As described above, this type of storable device has a problem in that the drawer and the storage are repeated many times, and rattling is very likely to occur. In particular, since this type of in-vehicle device receives a lot of vibrations from the vehicle on which it is loaded in addition to the drawer and the storage, the possibility of such a slide mechanism rattling is fixed and the retractable display device is fixed. Will be much larger than.

Therefore, in such a retractable display device used for a vehicle, a mechanism for reducing the backlash is extremely important. However, as in the conventional case, the slide mechanism of the liquid crystal monitor unit is provided with only both sides of the liquid crystal monitor unit. In order to secure the liquid crystal monitor unit, the liquid crystal monitor unit is held only at two portions, so that the force applied to those portions increases and the structure must be weak against rattling. However, when rails are provided on the upper and lower surfaces and engaged with each other as in the present invention, a plurality of rails can be provided, so that not only two parts but also four or four or more parts holds the liquid crystal monitor unit. Accordingly, the drawer and storage can be performed a number of times with a more robust structure against vibrations from a moving body such as a car, thereby enabling stable storage and drawer.

It is to be noted that such a configuration is conceivable as shown in FIG. 4 which has been used for describing the invention of claim 4. FIG. 4 shows the upper surface 42 a of the storage case 42.
And two convex rails 43b on the lower surface 42b, respectively.
Are provided on the upper and lower surfaces of the liquid crystal monitor unit 41, and two concave rails 43a are provided so as to be engaged with the liquid crystal monitor unit 41. Therefore, the liquid crystal monitor unit 41 is held by a total of four rails, and The structure is optimal for a retractable display device.

[0034]

As described above, in the storable display device according to the present invention, the slide mechanism is provided with a convex rail on the inner surface of the storage case and a concave rail on the outer surface of the liquid crystal monitor unit. Therefore, a liquid crystal monitor unit having a maximum volume can be ensured in a fixed storage case, and an optimum structure is provided especially for a recent large-sized liquid crystal monitor unit. Also,
Conventionally, it has been difficult to perform the grounding process. However, the retractable display device according to the second aspect of the present invention has an effect of making this extremely easy.

Further, as in the third aspect of the present invention, the rails are provided on both the liquid crystal display unit and the liquid crystal display circuit drive unit of the liquid crystal monitor unit, and the rails are held. It is possible to provide a small and stable storage unit that can be freely stored. Further, since the rails are provided on the upper and lower surfaces as in the invention according to the fourth aspect, a retractable display device capable of ensuring the maximum width can be provided. Further, since a plurality of rails are provided as in the invention according to claim 6, it is possible to provide a storable liquid crystal display device capable of performing extremely stable draw-out and storage operations.

[Brief description of the drawings]

FIG. 1 is a diagram showing a slide mechanism of a retractable display device of the present invention.

FIG. 2 is a diagram illustrating a slide mechanism of the retractable display device of the present invention in comparison with a conventional slide mechanism.

FIG. 3 is a diagram showing how to ground the retractable display device of the present invention.

FIG. 4 is a view showing an example in which rails are provided on upper and lower surfaces of a storage case by a slide mechanism of the retractable display device of the present invention.

FIG. 5 is a diagram showing a use state of a conventional retractable display device.

FIG. 6 is a view showing a slide mechanism of a conventional retractable display device.

FIG. 7 is a sectional view of a conventional concave rail.

FIG. 8 is a diagram showing a use state of a conventional storable display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 Storable display device 11, 31, 41 Liquid crystal monitor unit 11 a, 21 a Liquid crystal display unit 11 b, 21 b Liquid crystal display drive circuit unit 12 Storage case 13 Slide mechanism 13 a, 17, 23 a, 43 a Concave rail 13 b, 23 b, 43 b Convex rail 14 Inside surface of storage case 15 Outside surface of liquid crystal display unit 16 Outside surface of liquid crystal display drive circuit unit 19 Hinge 38 Contactor 42a Upper surface of storage case 42b Lower surface of storage case

Claims (6)

[Claims] 1. A storable display device comprising a liquid crystal monitor unit, a storage case for storing the liquid crystal monitor unit, and a slide mechanism for attaching the liquid crystal monitor unit to the storage case so as to be able to advance and retreat from a storage case opening. A retractable display device, wherein the slide mechanism is formed by engaging a convex rail provided on an inner surface of the storage case with a concave rail provided on an outer surface of the liquid crystal monitor unit. 2. An inner surface of the storage case is provided with a ground potential, and a contact is provided on a part of an outer surface of the liquid crystal monitor unit to make contact with the inner surface of the storage case so that the liquid crystal monitor unit has an inner surface. The retractable display device according to claim 1, wherein the display device is grounded. 3. The liquid crystal monitor unit, wherein the liquid crystal display unit and the liquid crystal display drive circuit unit are hinged and the liquid crystal display unit is pulled out of the storage case when the liquid crystal monitor unit is activated, and stands up. The retractable display device according to claim 1, wherein the concave rail is provided in both the unit and the liquid crystal display drive circuit unit. 4. A storable display device comprising: a liquid crystal monitor unit; a storage case for storing the liquid crystal monitor unit; and a slide mechanism for attaching the liquid crystal monitor unit to the storage case so as to be able to advance and retreat from a storage case opening. Wherein the slide mechanism is configured to engage a convex rail provided on upper and lower inner surfaces of the storage case with a concave rail provided on upper and lower outer surfaces of the liquid crystal monitor unit. apparatus. 5. An upper and lower inner surface of the storage case is provided with a ground potential, and a contact is provided on a part of an outer upper and lower surface of the liquid crystal monitor unit to make contact with the upper and lower inner surfaces of the storage case. 5. The retractable display device according to claim 4, wherein the monitor unit is grounded. 6. The convex rail and the concave rail,
5. The retractable display device according to claim 4, wherein a plurality of the storage cases are provided on upper and lower surfaces of the liquid crystal monitor unit, respectively.