EP3254272B1 - Image display device and associated mounting and removal method - Google Patents

Description

The invention relates to an assembly tool, in particular for the construction of a modular screen from numerous adjacent image display devices. Furthermore, the invention comprises a method for assembling or disassembling an image module in such an image display device.

Out DE 20 2011 103 002 U1 It is known to assemble a modular screen of numerous image display devices that are immediately adjacent to each other and arranged in columns and rows. The individual image display devices each contain a rear projection unit as an image module.

Furthermore, image display devices for the construction of such image walls are known which have LED image modules. In each image display device of the screen, the respective LED image module is in this case screwed to the device housing of the image display device, which makes it difficult to replace the LED image module, since the loosening of the screw connection between the LED image module and the device housing can only be done from behind.

Furthermore, the technical background of the invention should also be pointed to US 2011/0090138 A1 . DE 10 2008 032 352 A1 and WO 2014/004788 A1 ,

In addition, the general technical background of the invention should also be noted CN 102 314 814 B and CN 103 337 224 A ,

Finally revealed US Pat. No. 6,813,853 B1 a month tool according to the preamble of claim 1. However, the cost of replacing an image module is still relatively considerable.

The invention is therefore based on the object to simplify the replacement of an image module in such an image display device in a screen.

This object is achieved by an inventive assembly tool and by a method for mounting or dismounting the image module according to the independent claims.

The assembly tool according to the invention is preferably suitable for constructing a modular screen, as for example from the publication mentioned above DE 20 2011 103 002 U1 is known.

Furthermore, it should be noted that the image display device in accordance with the prior art has a device housing that contains in particular the electronic components that are required for operating the respective image display device.

Further, in accordance with the prior art, the image display device includes an image module (eg, LED picture module) disposed on the front of the device housing and connected to the device housing by at least a first threaded connection such that the image module is replaced by a solution of the first Screw connection between the device housing and the image module is interchangeable.

The image display device is characterized in that the first screw connection between the image module and the device housing located behind it is accessible from the front, d. H. from the side of the viewer so that the image module can be replaced without working on the back or sides of the image display device.

It has already been briefly mentioned above that the image module is preferably an LED image module which contains numerous light emitting diodes (LED: Light Emitting Diodes) to represent the desired image. However, within the scope of the invention, it is also possible in principle for the image module to be a rear projection unit, as may be the case for example DE 20 2011 103 002 U1 is known. In any case, the invention is not restricted to specific types of reproduction (eg LED, LCD, rear projection, etc.) with regard to the type of image module.

In a preferred embodiment of the invention, the image module consists of numerous adjacent image segments, which are preferably arranged directly adjacent to one another in rows and columns, wherein the individual image segments of the image module are preferably rectangular. The above-mentioned first screw connection between the device housing and the image module may in this case be hidden under the image segments, which are then removable in order to allow access to the first screw connection. For assembly or disassembly of the image module so those image segments must be removed, behind which are the first screw, so that the first screw between the image module and the device housing can be solved or tightened.

In the preferred embodiment of the invention, these first screw connections are respectively behind the four corner segments of the image module, which are therefore preferably removable in order to make accessible the first screw connections hidden underneath.

To facilitate the assembly or disassembly of the image module, a lower mounting frame can be screwed by means of a second screw on the device housing of the image display device. The lower mounting frame has a center Opening or recess which is larger than the image module to be replaced, so that the image module can be passed through the opening or recess in the lower mounting frame during assembly and disassembly. The lower mounting frame thus surrounds the image module at its peripheral edge with a gap to allow the implementation of the image module.

It should also be mentioned that the lower mounting frame has a plurality of guide rods which project parallel to one another towards the front side (that is, to the viewer side) and form a linear guide for the image module. During assembly or disassembly, the image module can thus be moved along the guide rods, as will be described in detail.

It has already been mentioned above that the lower mounting frame can be connected by second screw with the device housing. However, this is required only during assembly or disassembly of the image module. In normal operation, however, the lower mounting frame is not attached to the image display device. The second screw for the lower mounting frame are then hidden with their mounting holes preferably under the removable corner segments of the image module and thus do not disturb the appearance of the image display device.

It should be mentioned that the image module can have laterally recesses under the removable corner segments in order to be able to pass the second screw connections through the recesses. The second screw connections between the lower mounting frame and the device housing thus preferably protrude through the lateral recesses in the image module in the region of the removable corner segments.

It has already been briefly mentioned above that the image module is displaceable during assembly or disassembly on the guide rails of the lower mounting frame. For this purpose, an upper mounting frame is initially provided, which can be placed on the guide rails of the lower mounting frame and moved along the guide rails. For this purpose, the upper mounting frame sliding bushes which are displaceable on the guide rails of the lower mounting frame, the sliding bushes facilitate the sliding movement of the upper mounting frame relative to the lower mounting frame and in particular prevent tilting.

The image module can be connected during assembly or disassembly by a third screw to the upper mounting frame when the upper mounting frame is pushed up to the lower mounting frame. These third screw connections between the image module and the upper mounting frame are preferably also in the region of the removable corner segments of the image module.

The invention claims protection for a mounting tool for mounting or dismounting the image module in the image display device.

The assembly tool preferably comprises the above-mentioned lower mounting frame and also already mentioned above mounting frame, so reference is made to avoid repetition in this regard to the above description.

In addition, the invention also includes a method for mounting or dismounting the image module in the image display device. Also in this regard, reference is made to avoid repetition of the above description.

It should also be mentioned that maintenance is also possible from the rear side in the picture display device according to the invention. For example, in the image display device according to the invention, the image module can be exchanged starting from the rear side, as is the case in the known image display devices. This can also allow for temporary maintenance on the back and on the front.

Figur 1

eine Perspektivansicht eines Bildanzeigegerätes mit einem LED-Bildmodul und einem angeschraubten unteren Montagerahmen und einem aufgesetzten oberen Montagerahmen,

Figur 2

eine Abwandlung der Perspektivansicht aus Figur 1, wobei der obere Montagerahmen mit dem Bildmodul bereits teilweise abgezogen ist,

Figur 3

eine Seitenansicht des Bildanzeigegeräts aus Figur 1,

Figur 4

eine Seitenansicht des Bildanzeigegeräts gemäß Figur 2,

Figur 5

eine Perspektivansicht des Bildanzeigegeräts ohne die Montagerahmen,

Figur 6

eine Abwandlung von Figur 5, wobei die Ecksegmente des LED-Bildmoduls demontiert sind,

Figur 7

eine Perspektivansicht eines Greifwerkzeugs zum Abnehmen der Ecksegmente des Bildmoduls gemäß Figur 6,

Figur 8

eine rückwärtige Perspektivansicht des Greifwerkzeugs aus Figur 7,

Figur 9

eine Perspektivansicht des Bildanzeigegeräts gemäß Figur 5, wobei das Greifwerkzeug gemäß den Figuren 7 und 8 auf ein Ecksegment des LED-Moduls aufgesetzt ist,

Figur 10

eine Detailvergrößerung von Figur 2 zur Verdeutlichung des Verlaufs der Führungsschienen,

Figur 11

eine Detailvergrößerung von Figur 6 zur Verdeutlichung der Aufnahmebohrungen für die Schraubverbindung zwischen dem unteren Montagerahmen und dem Gerätegehäuse,

Figur 12

ein Flussdiagramm zur Verdeutlichung des erfindungsgemäßen Demontageverfahrens, sowie

Figur 13

ein Flussdiagramm zur Verdeutlichung des erfindungsgemäßen Montageverfahrens.

Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred embodiments of the invention with reference to FIGS. Show it:

FIG. 1

a perspective view of an image display device with an LED image module and a bolted lower mounting frame and a mounted upper mounting frame,

FIG. 2

a modification of the perspective view FIG. 1 wherein the upper mounting frame with the image module is already partially peeled off,

FIG. 3

a side view of the image display device of Figure 1,

FIG. 4

a side view of the image display device according to Figure 2,

FIG. 5

a perspective view of the image display device without the mounting frame,

FIG. 6

a modification of FIG. 5 , wherein the corner segments of the LED image module are dismantled,

FIG. 7

3 is a perspective view of a gripping tool for removing the corner segments of the image module according to FIG. 6;

FIG. 8

a rear perspective view of the gripping tool FIG. 7 .

FIG. 9

a perspective view of the image display device according to FIG. 5 , wherein the gripping tool according to the FIGS. 7 and 8 is placed on a corner segment of the LED module,

FIG. 10

an enlarged detail of FIG. 2 to clarify the course of the guide rails,

FIG. 11

an enlarged detail of FIG. 6 to clarify the mounting holes for the screw connection between the lower mounting frame and the device housing,

FIG. 12

a flowchart to illustrate the disassembly method according to the invention, as well

FIG. 13

a flow chart to illustrate the assembly method according to the invention.

The drawings show an image display device 1 for constructing a screen, as in a similar form DE 20 2011 103 002 U1 is known.

The image display device 1 comprises a device housing 2 and an image module 3.

In this embodiment, the image module 3 is an LED image module, but in principle, other designs of the image module 3 are conceivable.

The device housing 2 accommodates electronic components which are required for operation of the image module 3, which is known per se from the prior art.

In the mounted state, the image module 3 is connected by a plurality of screw 4, 5 with the device housing 2, wherein in FIG. 3 only the two screw 4, 5 are visible on one side. On the opposite side, however, there are two more screw connections between the image module 3 and the device housing 2, these two further screw connections are not visible in the drawings.

To replace the image module 3 in the image display device 1 so the screw 4, 5 between the image module 3 and the device housing 2 must be solved, as will be described in detail.

The image module 3 has numerous segments 6 arranged in columns and rows. In particular, the image module comprises four corner segments 7-10 which are removable to access mounting holes 11-14 underneath for threaded connections, as will also be described in detail below.

For assembly or disassembly of the image module 3, a lower mounting frame 15 by a screw 16, 17 are connected to the device housing 2. In total, four screw connections between the lower mounting frame 15 and the device housing 2 are respectively provided at the corners of the device housing 2, wherein the FIGS. 3 and 4 only the two lateral screw 16, 17 show. The screw 16, 17 engage in each receiving holes 18 (see. Fig. 11 ) in the device housing 2, wherein the receiving holes 18 are respectively disposed below the removable corner segments 7-10 of the image module 3.

Furthermore, it should be mentioned in this connection that the board of the image module 3 in the region of the removable corner segments 7-10 each have a lateral recess 19 in order to be able to pass the screw connection.

From the front of the lower mounting frame 15 are four guide rods 20-23 from which are parallel and equal length and thus form a linear guide, as will be described in detail.

In addition, an upper mounting frame 24 is provided for mounting or dismounting of the image module 3, which has at its corners four sliding bushings 25-28, which can slide on the guide rods 20-23 of the lower mounting frame 15. The upper mounting frame 24 can be gripped on two handles 29, 30 and be placed on the guide rods 20-23. Subsequently, the upper mounting frame 24 can then be moved along the guide rails 20-23 relative to the lower mounting frame 15.

To disassemble the image module 3, the upper mounting frame 24 is then pushed tightly onto the lower mounting frame 15. Subsequently, screw connections 31, 32 between the upper mounting frame 24 and the image module 3 can then be produced. In FIG. 4 only the two lateral screw 31, 32 are visible. In fact, the connection between the upper mounting frame 24 and the image module 3, however, takes place through a total of four screw connections in the corners of the image module 3.

Then, the screw 4, 5 can be solved between the image module 3 and the device housing 2 to allow disassembly of the image module 3. It should be noted that the screw 31, 32 between the upper mounting frame 24 and the image module 3 by knurled screws 33-36 can be operated manually, so that the assembly and disassembly is relatively easy.

After loosening the screw connection 4, 5 between the device housing 2 and the image module 3, the upper mounting frame 24 on the handles 29, 30 can then be removed together with the image module 3.

The assembly of the image module 3 is then in the reverse order.

It has already been mentioned above that the corner segments 7-10 of the image module 3 must be removed in order to enable disassembly or assembly of the image module 3.

The Figures 7-9 show a gripping tool 37, which can be used to remove the corner segments 7-10 of the image module 3. The gripper tool 7 is substantially plate-shaped and has at its opposite side edges at the top and bottom respectively opposite a total of four grippers 38, 39, wherein in the drawings, only the two grippers 38, 39 are shown.

In addition, the gripping tool 37 has an adjusting screw 40, which makes it possible to adjust the grippers 38, 39. A rotation of the adjusting screw 40 thus leads to a tightening or loosening of the grippers 38, 39 in the vertical direction in FIG. 9 ,

Out FIG. 10 is also apparent that the guide rod 23 is passed through the recess 19.

The following will now be described with reference to the flowchart in FIG FIG. 12 the dismantling method according to the invention described.

In a first step S1, the four corner segments 7-10 of the image module 3 are first removed by means of the gripping tool 37.

In a second step S2, the lower mounting frame 15 is then screwed to the device housing 2.

In a step S3 then special screws are screwed into the mounting holes under the removed corner segments 7-10 of the image module 3.

In a step S4, the upper mounting frame 24 is then slid onto the guide rods 20-23 of the lower mounting frame 15 until the upper mounting frame 24 abuts the lower mounting frame 15.

In a step S5, the upper mounting frame 24 is then screwed with the special screws, whereby a screw connection is made between the upper mounting frame 24 and the image module. 3

In a step S6, the screw connection is then released between the image module 3 and the device housing 2.

In a step S7, the upper mounting frame 24 is then removed together with the image module 3.

In a step S8, the electrical connections between the image module 3 and the electronic components in the device housing 2 are then released.

After the solution of the electrical connection, the image module 3 can then be completely removed in a step S9.

FIG. 13 shows a flowchart to illustrate the mounting method according to the invention for mounting the image module 3 in the image display device. 1

In a first step S1, the lower mounting frame 15 is first screwed onto the device housing 2 with the guide rods 20-23.

Subsequently, the upper mounting frame 24 is screwed in the removed state to the mounted image module 3, which takes place in a step S2.

The upper mounting frame 24 is then pushed onto the guide rods 20-23 of the lower image module in a step S3 together with the image module 3 screwed thereto.

In a next step S4, the image module 3 is then screwed to the device housing 2.

Subsequently, in a step S5, a loosening of the screw connection between the upper mounting frame 24 and the image module 3, whereupon the upper mounting frame 24 can then be removed in a step S6.

In a further step S7, the lower mounting frame 15 can then be unscrewed again.

Finally, in a step S8, the corner segments 7-10 are then reinstalled.

The invention is not limited to the preferred embodiments described above. Rather, a variety of variants and modifications is possible, which also make use of the inventive idea and therefore fall within the scope. In particular, the invention also claims protection for the subject matter and the features of the dependent claims independently of the claims referred to and in particular independently of the features of the main claim.

LIST OF REFERENCE NUMBERS

1

Image display device

2

Device housing of the image module

3

Imaging module

4-5

Screw connections between the image module and the device housing

6

Segments of the image module

7-10

Corner segments of the image module

11-14

Mounting hole for screw connections between the image module and the device housing

15

Lower mounting frame

16, 17

Screw connections between the lower mounting frame and the device housing

18

Mounting hole for the screw connection between the lower mounting frame and the device housing

19

Recess under the removable corner segments

20-23

Guide rods on the lower mounting frame

24

Upper mounting frame

25-28

Sliding bushes on the upper mounting frame

29, 30

Handles on the upper mounting frame

31, 32

Screw connections between the upper mounting frame and the image module

33-36

Knurled screws of the screw connection between the upper mounting frame and the image module

37

gripping tool

38, 39

Gripper on the gripping tool

40

Adjusting screw for adjusting the grippers

Claims (6)

1. Mounting tool (15, 24) for replacing an image module (3) in an image display device (1) having a device housing (2) and an image module (3) which is arranged on the front side of the device housing (2) and is connected to the device housing (2) by at least one first screw connection (4, 5), so that the image module (3) can be replaced by loosening the first screw connection (4, 5) between the device housing (2) and the image module (3), wherein the first screw connection (4, 5) between the image module (3) and the device housing (2) located behind it being accessible from the front side, so that the image module (3) can be replaced without working on the rear side or the sides of the image display device (1),
   characterized in that

   a) the mounting tool comprises a lower mounting frame (15) which, for mounting and dismounting the image module (3) on the device housing (2) of the image display unit (1), can be screwed in place by the second screw connection (16, 17) on the front side of the image display unit (1), and

   b) the lower mounting frame (15) has in the centre an opening which is larger than the image module (3) to be replaced, so that the image module (3) can be guided through the opening in the lower mounting frame (15) during assembly and disassembly, and

   c) the lower mounting frame has a plurality of guide rods (20-23) which project parallel to one another towards the front side and form a linear guide for the image module (3), and

   d) the mounting tool comprises an upper mounting frame (25) which can be placed on the guide rods (20-23) of the lower mounting frame (15) and is slidable along the guide rods (20-23).
2. Mounting tool according to claim 1, characterized in that the upper mounting frame (24) comprises slide bushings (25-28) slidable on the guide rods (20-23) of the lower mounting frame (15) so that the upper mounting frame (24) on the guide rods (20-23) is slidable relative to the lower mounting frame (15).
3. Mounting tool according to claim 1 or 2, characterized in that the upper mounting frame (24) has at least one handle (29, 30) on its front side in order to facilitate manual positioning and removal of the upper mounting frame (24).
4. Mounting tool according to any of claims 1 to 3, characterized in that the upper mounting frame (24) can be connected to the image module (3) by a third screw connection (31, 32).
5. Disassembly method for disassembling an image module (3) from an image display apparatus (1) having a device housing (2) and an image module (3) which is arranged on the front side of the device housing (2) and is connected to the device housing (2) by at least one first screw connection (4, 5), so that the image module (3) can be replaced by a release of the first screw connection (4, 5) between the image module (3) and the device housing (2), wherein the first screw connection (4, 5) between the image module (3) and the device housing (2) located behind it being accessible from the front side, so that the image module (3) can be replaced without working on the rear side or the sides of the image display device (1), the mounting tool according to one of the claims 1-4 being used, having the following steps:

   a) removing the corner segments (7-10) of the image module (3) to expose the first screw connection (4, 5) located behind it,

   b) screwing the lower mounting frame (15) onto the device housing (2) of the image display unit (1) by means of the second screw connection (16, 17),

   c) pushing the upper mounting frame onto the guide rods (20-23) of the lower mounting frame (15),

   d) screwing the upper mounting frame (24) to the image module (3) using the third screw connection (31, 32),

   e) loosening the first screw connection (4, 5) between the device housing (2) and the image module (3),

   f) pulling off the upper mounting frame (24) with the image module (3) screwed to it along the guide rods (20-23) of the lower mounting frame (15).
6. Mounting method for mounting an image module (3) on an image display device (1) having a device housing (2) and an image module (3) which is arranged on the front side of the device housing (2) and is connected to the device housing (2) by at least one first screw connection (4, 5), so that the image module (3) can be replaced by a release of the first screw connection (4, 5) between the device housing (2) and the image module (3), wherein the first screw connection (4, 5) between the image module (3) and the device housing (2) located behind it being accessible from the front side, so that the image module (3) can be replaced without working on the rear side or sides of the image display device (1), the mounting tool according to one of claims 1-4 being used, comprising the following steps:

   a) screwing the lower mounting frame (15) onto the device housing (2) of the image display unit (1) by means of the second screw connection (16, 17),

   b) screwing the upper mounting frame (24) to the image module (3) to be mounted by means of the third screw connection (31, 32),

   c) pushing the upper mounting frame with the image module (3) screwed to it onto the guide rods (20-23) of the lower mounting frame (15),

   d) screwing the image module (3) to the device housing (2) using the first screw connection (4, 5),

   e) loosening the third screw connection (31, 32) between the upper mounting frame and the image module (3),

   f) pulling off the upper mounting frame (24) without the image module (3) along the guide rods (20-23) of the lower mounting frame (15),

   g) mounting the corner segments (7-10) in the screwed image module (3).

Images