JP5201610B2 - Multi-screen display device - Google Patents

Description

  The present invention relates to a multi-screen display device that can be used in public halls such as large halls, transportation facilities, shopping malls, and operation rooms, and in educational settings such as schools.

  A multi-screen display device in which a large screen is formed by arranging a large number of unit image devices in parallel is known. In this multi-screen display device, a large screen is formed by arranging a large number of unit image devices in a matrix on a plane, and thereby, for example, a huge screen can be configured.

As such a multi-screen display device, a flat image display device disclosed in Patent Document 1 is known.
This flat image display device fixes a plurality of unit flat display elements (unit image devices) to a gantry via a fixing jig. A gap is formed between them.
The heat generated from the unit flat display element is radiated to the outside through a gap formed between the unit flat display element and the gantry.
JP 2005-241819 A

  By the way, in the flat-type image display device disclosed in Patent Document 1, each unit image device is configured to be attached to the gantry with a space therebetween, so that heat is easily trapped in the gap between the unit image device and the gantry, and sufficient. There was a problem that proper heat dissipation was not performed. In addition, since each unit image device is configured to be supported with respect to the gantry by the fixing jig, the flatness of the unit image device may not be maintained, and there is a risk of hindering the formation of a large screen. In addition, there was a problem that the individual installation work to the gantry was a heavy labor.

  The present invention has been made in view of such circumstances, and smoothly dissipates heat from the unit image device, maintains the flatness of the large screen formed by the unit image device, and facilitates the mounting operation. An object of the present invention is to provide a multi-screen display device that can be performed in a simple manner.

In order to achieve the above object, the present invention is a multi-screen display device that forms a large screen by a plurality of unit image devices, and the plurality of unit image devices are arranged on the same plane so as to be in surface contact. It has an arrangement board, and a gap is formed in the back edge part of the unit image device between adjacent unit image devices .

It is the perspective view which looked at the multiscreen display device 100 concerning a 1st embodiment of the present invention from the front side. It is sectional drawing which cut | disconnected the multiscreen display apparatus 100 of FIG. 1 along the II-II line. It is the perspective view which looked at the multi-screen display device 101 which concerns on 2nd Embodiment of this invention from the front side. It is sectional drawing which cut | disconnected the multiscreen display apparatus 101 of FIG. 3 along the IV-IV line. FIG. 5 is a cross-sectional view illustrating a modification of the multi-screen display device 101 in FIGS. 3 and 4. It is the perspective view which looked at the arrangement | positioning board 1 concerning the modification of FIG. 5 from the front side. It is the perspective view which looked at the arrangement | positioning board 1 concerning the modification of FIG. 5 from the back side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Arrangement board 2 ... Liquid crystal display device (unit image device)
3 ... contact surface 4 ... gap 5 ... screw (fixed body)
10 ... support leg 20 ... rib 100,101 ... multi-screen display device

First, a first embodiment of the present invention will be described with reference to FIGS.
In these drawings, reference numeral 100 denotes a multi-screen display device according to the present embodiment, and reference numeral 1 denotes an arrangement plate that is a constituent element of the multi-screen display device 100. The arrangement plate 1 is formed of a material having good thermal conductivity such as aluminum, and both the front surface 1A and the back surface 1B are formed in a planar shape.

On the front surface 1A of the arrangement plate 1, a single large screen is formed by arranging liquid crystal display devices 2 serving as unit image devices in a matrix form so that they are three vertically long and three horizontally wide.
The liquid crystal display device 2 receives a general input video signal (TV, PC, etc.) and converts it into a format suitable for displaying video on a liquid crystal panel. When the input is an analog PC signal Circuits necessary for image display such as an A / D converter, a resolution conversion circuit, a synchronization processing circuit, a power supply circuit, and a control circuit for displaying one large screen by a plurality of liquid crystal display devices 2 are provided. Although omitted in the drawings.

  In the plurality of liquid crystal display devices 2, the back surfaces 2 </ b> A are formed in a planar shape (not having convex portions) so as to be in close contact with the front surface 1 </ b> A of the arrangement plate 1. The liquid crystal display device 2 is on the same plane through a contact surface (indicated by reference numeral 3) formed by closely contacting the back surface 2A of the liquid crystal display device 2 and the front surface 1A of the arrangement plate 1. In addition, the heat transmitted from the liquid crystal display device 2 is released to the outside so as to dissipate heat from the liquid crystal display device 2 and make the temperature of the liquid crystal display device 2 uniform.

  Further, a gap 4 is formed between the adjacent liquid crystal display device 2 at the edge of the back surface 2 </ b> A of the liquid crystal display device 2. The heat generated in each liquid crystal display device 2 due to the gap 4 formed at the edge of the back surface 2A of the liquid crystal display device 2 is directly transferred to the adjacent liquid crystal display device 2 through the rear part of the liquid crystal display device 2. Is prevented.

  Each of the liquid crystal display devices 2 is fixed to the arrangement plate 1 by screws 5 (fixed bodies) screwed from the back surface 1B side of the arrangement plate 1 through screw holes 1C. Then, by fixing the liquid crystal display device 2 from the back surface 1B of the arrangement plate 1 with the screws 5 in this way, it is not necessary to arrange components for fixing on the front surface side of the liquid crystal display device 2, and the screen is displayed. There is no obstacle to see. In addition, you may fix to the front surface 1A of the arrangement | positioning board 1 by adhesion | attachment instead of the fixing body by the screw 5. FIG.

  And the arrangement | positioning board 1 with which the above liquid crystal display devices 2 were supported is attached to the attachment surface of to-be-attached bodies, such as the wall surface W1 located in the front surface of the wall W via the suspension tool which is not shown in figure.

  As described above in detail, according to the multi-screen display device 100 according to the present embodiment, the front surface 1A of the arrangement plate 1 and the back surface 2A of the liquid crystal display device 2 are in close contact via the contact surface 3, and a plurality of Since the liquid crystal display device 2 is arranged so as to be on the same plane, heat is smoothly radiated from the liquid crystal display device 2 through the contact surface 3, and the temperature of the liquid crystal display device 2 is made uniform. Can do. In addition, since the plurality of liquid crystal display devices 2 are directly supported by the arrangement plate 1, the flatness of the large screen formed by the liquid crystal display device 2 can be maintained. In addition, by integrally handling the arrangement plate 1 on which a plurality of liquid crystal display devices 2 are arranged, operations such as attachment to the attachment surface of the mounted body such as the wall surface W1, position adjustment of the entire device, relocation, etc. can be easily performed. It can be carried out.

  Further, in the multi-screen display device 100 described above, the placement plate 1 is formed of a material having excellent thermal conductivity such as aluminum, so that heat generated by the liquid crystal display device 2 can be smoothly transferred to the outside through the placement plate 1. It can dissipate heat.

  Further, in the multi-screen display device 100 described above, the rear surface 2A of the liquid crystal display device 2 that is in contact with the arrangement plate 1 is also formed in a planar shape, similarly to the front surface 1A of the arrangement plate 1, so that the arrangement plate 1A and the back surface 2A of the liquid crystal display device 2 are in close contact with each other through the contact surface 3, and heat generated in the liquid crystal display device 2 can be efficiently transferred to the arrangement plate 1. Heat dissipation can be performed smoothly.

  Although the liquid crystal display device 2 as a unit image device is arranged in a matrix form on the front surface 1A of the arrangement plate 1 so as to be three vertical and three horizontal, the number of the liquid crystal display devices 2 and the arrangement pattern thereof are not limited as long as they are plural. . For example, the liquid crystal display device 2 may be arranged in series, or a combination of series and parallel may be used. For example, the formed large screen may be a screen that is long in the horizontal direction as a whole.

  Moreover, although the arrangement | positioning board 1 used aluminum which was lightweight and excellent in heat conductivity, if heat conductivity is good, it will not be limited to being formed with aluminum, The composite containing another metal or aluminum You may form with a material etc.

  First, a second embodiment of the present invention will be described with reference to FIGS. Note that, in the following description, the same reference numerals are assigned to portions that share the same configuration as the first embodiment, and redundant descriptions are omitted.

  The multi-screen display device 101 according to the second embodiment is different from the multi-screen display device 100 according to the first embodiment in that the support legs 10 are provided on the back surface 1B of the arrangement plate 1. As shown in FIGS. 3 and 4, the support leg 10 is provided integrally with the arrangement plate 1 on the rear surface 1B of the arrangement plate 1, and is attached to a wall surface W1 or the like via a hanging tool (not shown). It can be attached to the attachment surface of the body, and when it is attached to the attached body such as the wall surface W1, a gap 11 is formed between the rear surface 1B of the arrangement plate 1. The heat of the liquid crystal display device 2 transmitted to the arrangement plate 1 through the gap 11 can be released.

  3 and 4 omit the image display circuit necessary for image display, the image display circuit (indicated by reference numeral 12) may be provided at the position shown in FIGS. As described above, the image display circuit 12 is a signal processing circuit that receives a general input video signal (TV, PC, etc.) and converts it into a format suitable for displaying a video on a liquid crystal panel. The A / D converter, the resolution conversion circuit, the synchronization processing circuit, the power supply circuit, and the control circuit for displaying one large screen by the plurality of liquid crystal display devices 2 are used.

5 to 7, the arrangement plate 1 is formed with a cable hole 1 </ b> D through which a cable (not shown) reaching the image display circuit 12 is inserted together with the screw hole 1 </ b> C described above.
Further, as can be seen with reference to the rear view of the arrangement plate 1 in FIG. 7, a plurality of ribs 20 constituting a heat sink are provided on the back surface 1 </ b> B of the arrangement plate 1. These ribs 20 are arranged along the upper and lower sides at a predetermined interval so as to sandwich the screw hole 1C and the cable hole 1D. In particular, the rib 20 reinforces the external stress applied to the arrangement plate 1 up and down. Also, there is a role of guiding upward while dissipating heat from the liquid crystal display device 2 transmitted to the arrangement plate 1.
In the multi-screen display device 101 shown in FIGS. 5 to 7, the gap 4 formed on the back surface 2 </ b> A of the liquid crystal display device 2 shown in the first embodiment is omitted.

  In the multi-screen display device 101 according to the second embodiment as described above, it can be attached to the rear surface 1B of the arrangement plate 1 on the attachment surface of the mounted body such as the wall surface W1, and the rear surface 1B of the arrangement plate 1 Since the support legs 10 that form the gap 11 are provided between them, the heat of the liquid crystal display device 2 transmitted to the arrangement plate 1 can be released through the gap 11, and the heat dissipation of the liquid crystal display device 2 described above. Can be promoted.

  Further, in the multi-screen display device 101, the plurality of ribs 20 provided on the back side of the arrangement plate 1 not only reinforce the arrangement plate 1, but also increase the contact area with air and increase the heat dissipation effect. The heat of the liquid crystal display device 2 that has transmitted the arrangement plate 1 can be discharged smoothly.

  Further, in the multi-screen display device 101, since the ribs 20 on the back side of the arrangement plate 1 are arranged along the top and bottom, the heat transmitted to the arrangement plate 1 through the ribs 20 is guided upward, and remains as it is. It can be discharged and a higher heat dissipation effect can be obtained.

The support legs 10 positioned on the rear surface 1B of the arrangement plate 1 may be formed integrally with the arrangement plate 1, or may be provided separately and attached to the rear surface 1B of the arrangement plate 1.
Further, the rib 20 is preferably formed of aluminum having good thermal conductivity like the arrangement plate 1. Further, the rib 20 may be provided integrally with the arrangement plate 1, or a rib provided separately may be attached to the arrangement plate 1.

  Moreover, embodiment mentioned above shows an example among embodiment of this invention, and this invention is not limited to this embodiment.

Claims (7)

A multi-screen display device that forms a large screen by a plurality of unit image devices,
Having an arrangement plate for arranging the plurality of unit image devices on the same plane so as to be in surface contact ;
A multi-screen display device , wherein a gap is formed between adjacent unit image devices at a rear edge of the unit image device.   The multi-screen display device according to claim 1, wherein the arrangement plate is made of a metal material.   3. The multi-screen display device according to claim 1, wherein a rear surface of the unit image device that is in contact with the arrangement plate is formed in a planar shape.   The multi-screen display device according to claim 1, wherein the unit image device is fixed by a fixing body from a rear surface side of the arrangement plate. Wherein the rear side of the placement plate, 4 claim 1, characterized in that the supporting legs to form a gap is provided between the rear surface of the mountable to the mounting surface, and the disposition plate of the mounting member The multi-screen display device according to any one of the above. The multi-screen display device according to any one of claims 1 to 5 , wherein a plurality of ribs are provided on a back side of the arrangement plate. The multi-screen display device according to claim 1, wherein the ribs on the back side of the arrangement plate are arranged along the top and bottom.

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