FR3048807A1 - DIGITAL DISPLAY PANEL PANEL, DIGITAL DISPLAY PANEL AND ASSEMBLY METHOD THEREOF - Google Patents

Abstract

The invention relates to a digital billboard facade, said facade comprising a lower tube (21) comprising: - a bottom wall (27), an upper wall (30), a front wall (28), and a rear wall (29) having a shoulder (31), - said surface of said upper wall (30) comprising: ○ a first zone (35) arranged facing said front side wall and configured to fix modules, and ○ a second zone ( 36) disposed opposite said rear side wall and configured to attach ventilation devices, a plurality of vents (45) being made in said top wall at the second zone so that the ventilation devices can suck and propel air from said lower tube to said modules, said lower tube being in aeraulic communication with the outside of said facade.

Description

DIGITAL DISPLAY PANEL FACADE. DIGITAL DISPLAY PANEL AND ASSOCIATED MOUNTING METHOD

TECHNICAL FIELD The invention relates to the field of display panels, and more specifically digital display panels with light-emitting diodes.

Previous art

In general, the digital display panels are appreciated for the possibility they offer to allow an almost infinite change of the images or messages to be displayed, limited only to the storage capacity of the electronic central unit that equips such panels. . These panels also have the advantage of being able to display animated images, which makes it an advertising medium more and more appreciated. These panels can also be connected to a remote server in order to modify a display campaign, broadcast on the panel, quickly and without intervention of an operator.

These digital display panels comprise a plurality of light-emitting diodes, arranged in a matrix manner, and able to be individually illuminated according to the desired display. Various hardware architectures can be envisaged, and in particular those described in US 5,949,581 in which the panel comprises a plurality of modules, each containing a few hundred LEDS.

The modules are mounted on a supporting structure so as to form a facade of a digital panel. Conventionally, the support structure is mounted on a rectangular frame comprising a lower tube, an upper tube and lateral uprights. The facade is attached to a frame of a digital panel on which are fixed internal equipment to the digital panel: a display control system, power supplies modules and cooling devices modules.

Indeed, the modules include a set of electronic components that heat strongly and the digital panels are often placed in height and capture the sun's rays. It follows that the cooling devices of the modules must develop a very high cooling power to cool the modules and prevent the electronic components from overheating and becoming defective. Thus, the cooling devices are heavy and bulky and are fixed on the frame of the digital panel.

In addition, other advertising display means using printed media are known. Thus, there is a large number of scrollable panels comprising a box formed of a frame and at least one glass removably mounted on the frame. The frame of the drop-down panel includes a plurality of printed advertising posters interconnected and displaced over time by a motor. The scrolling panels thus make it possible to consecutively visualize several advertisements by moving the posters.

However, the scrolling panels are not as efficient and adaptive as the digital panels and there is a need to replace the scrolling panels with digital panels. To do this, it is customary to remove the entire furniture and replace it with new furniture with a digital panel front associated with a new frame incorporating the internal equipment of a digital panel: a control system of the display, module power supplies and module cooling devices. This reconfiguration of the scrolling panels is not effective because the constituent elements of the scrolling panels, frames and windows etc., are not preserved on the digital panels.

It follows that the old elements must be dismantled and evacuated, and the new furniture must be produced, conveyed and erected. The low reuse rate of existing drop-down panel elements negatively impacts the ecological footprint and manufacturing and assembly time to turn a drop-down panel into a digital panel.

The technical problem of the invention is to find an alternative to replace scrolling panels with digital panels by increasing the rate of reuse of the elements of the scrolling panels.

Expose the invention

The present invention aims to solve this technical problem by reusing the frame of the scrolling panels with a digital billboard facade adapted to support the equipment conventionally mounted in the context of a digital panel: a control system display, module power supplies and module cooling devices. For this purpose, according to a first aspect, the invention relates to a digital billboard facade, said facade comprising a lower tube, an upper tube and lateral uprights configured to support a plurality of modules provided with a matrix network of electroluminescent diodes, said lower tube comprising: a bottom wall, an upper wall, a front wall, and a rear wall having a shoulder so that a surface of said upper wall is greater than a surface of said bottom wall, said surface of said said upper wall comprising: O a first zone disposed opposite said front side wall and configured to secure said modules, and O a second zone disposed opposite said rear side wall and configured to fix ventilation devices, a plurality of vents being made in said upper wall at the second zone so that ue the ventilation devices can suck and propel the air from said lower tube to said modules, said lower tube being in aeraulic communication with the outside of said facade.

The present invention makes it possible to increase the support surface of the lower tube of the facade by means of a portion of the upper wall, disposed above the shoulder, intended to extend inside the frame of a scrolling panel. The increase in the support surface of the lower tube makes it possible to improve the strength of the structure of the facade and to support the digital panel equipment conventionally mounted on a frame of the digital display panel.

In addition, ventilation devices are reviewed to integrate into this new architecture. Instead of having the ventilation devices behind the modules and increase the power of the ventilation devices when the internal air of the panel exceeds a threshold value. The invention proposes a cooling circuit in which the outside air enters the lower tube in order to be propelled behind the modules. This cooling circuit limits the power and size of the ventilation devices.

According to one embodiment, a plurality of vents are made in said rear side wall between said shoulder and said bottom wall so as to penetrate the air from outside said facade into said lower tube. This embodiment makes it possible to protect the lower tube from rain or splashing which may come from the wheels of the vehicles circulating close to the digital panel when it is mounted on a foot.

According to one embodiment, said rear side wall has an air inlet chamber disposed between said shoulder and said bottom wall, said vents of said rear side wall being made on either side of said inlet chamber of said 'air. This embodiment makes it possible to improve the inferior tube strength while guaranteeing aeraulic communication between the outside air and the lower tube.

According to one embodiment, said vents of said rear side wall are equipped with a filter. This embodiment makes it possible to limit the presence of humidity in the digital panel.

According to one embodiment, at least one of said lateral uprights comprises vents disposed near said upper tube and configured to extract the air contained in said lateral upright to the outside of said facade, said lateral upright being in aeraulic communication with the air cooling said modules. The ventilation devices overpressurize the air contained in the digital panel. The vents disposed near said upper tube thus allow the air to be led at overpressure towards the outside of the digital panel. Thus, a trajectory of the air flows can be predetermined in the digital panel according to the power of the ventilation devices and the position of the vents.

According to one embodiment, said lower tube, said upper tube and / or said lateral uprights are made from an extruded aluminum profile. This embodiment limits the weight of the facade.

According to one embodiment, said upper tube has a hinge intended to cooperate with the frame of a digital display panel. This embodiment makes it possible to mount the facade removably with respect to the remaining structure of the pull-down panel. The digital panel thus formed can be easily maintained by opening the facade to intervene on the equipment of the facade.

According to one embodiment, said modules are mounted on a supporting structure comprising uprights fixed between said lower tube and said upper tube and crosspieces removably mounted between said uprights, a width of said cross members being substantially equal to a width of said modules. This embodiment makes it possible to intervene for maintenance with removable modules on the front face. These modules include screws of very small diameter that can be removed from the front between the diodes so as to extract the module from the front. However, it is extremely difficult to intervene on the equipment arranged behind the modules because the size of a module is often reduced, for example 30x30cm. It follows a reduced accessibility to electrical cabinets and other components located at the rear of said grid which complicates maintenance operations.

This embodiment makes it possible to disassemble the horizontal bars of the grid (carrier structure of the modules) in order to facilitate the movements of an operator to act on the front face on the equipment positioned behind the modules.

According to a second embodiment, the invention relates to a digital display panel comprising: a frame consisting of a bottom plate, an upper plate and side plates, and at least one front according to the first embodiment; of the invention, and wherein: a portion of said rear wall located between the shoulder and the bottom wall being positioned against said bottom plate of said frame, and a portion of said rear wall located between the shoulder and the upper wall; extending above said bottom plate of said frame.

According to a second embodiment, the invention relates to a method of mounting a facade according to the first embodiment of the invention on a rolling panel, the method comprising the steps of: dismounting a window of said pull-down panel by extraction a frame supporting said hinge pane of said pull-down panel, removing the internal elements of the pull-down panel, mounting said facade on said hinges of said pull-down panel by establishing a cooperation between said hinges of said pull-down panel and hinges disposed on said upper tube or one of said lateral uprights of said facade, closure of said facade on a frame of said drop-down panel so that: a portion of said rear wall located between the shoulder and the bottom wall of said facade is positioned against a lower plate of said frame, and O part of said rear wall located ent re the shoulder and the upper wall of said facade extends above said bottom plate of said frame.

Brief description of the figures

The manner of carrying out the invention as well as the advantages which result therefrom, will emerge clearly from the following embodiment, given by way of indication but not by way of limitation, in support of the appended figures in which FIGS. 1 and 6 represent: FIG. : a schematic front view of a reconditioned rolling-down panel in digital display panel according to one embodiment of the invention; Figure 2 is a schematic perspective view of the facade of the panel of Figure 1; Figure 3 is a side sectional view of the lower tube of the front of Figure 2; Figures 4 and 5: sectional views of the lower part of the panel of Figure 1; Figure 6 is a sectional view of the upper part of the panel of Figure 1; and FIG. 7 is a front perspective view of the carrier structure of the modules of FIG. 1.

Detailed description of the invention

FIG. 1 illustrates a reconditioned roll-up panel in a digital display panel 11 by means of a front panel 10 incorporating the equipment conventionally mounted in the context of a digital panel: a control system of the display 20, display devices The digital display panel 11 includes the foot 12 as well as the frame 13 of the old scrolling panel. The frame 13 is formed by a lower plate 14, an upper plate 15 and side plates 16-17 connecting the lower 14 and upper 15 plates so as to form a parallelepiped open on both sides on the front and the back of the panel.

For the purposes of the invention, the front of the panel corresponds to a first display surface intended to broadcast an advertisement. The back of the panel is the face of the panel opposite the first display surface. The bottom of the panel is the surface facing the ground when the panel is mounted and the top of the panel is the surface facing the sky when the panel is mounted. The terms up, down, up, down, and side refer to this panel layout.

The facade 10 is illustrated in Figure 2 and comprises a rectangular frame formed by a lower tube 21 and an upper tube 22 connected by lateral uprights 23-24. This framework makes it possible to support a supporting structure 55 comprising uprights 56 and sleepers 57. A plurality of modules 25, partially shown, are mounted on the front face of the supporting structure 55. These modules 25 incorporate a matrix array of light-emitting diodes arranged in lines and columns on the front face of the modules 25.

Preferably, as illustrated in FIG. 7, the uprights 56 and crosspieces 57 form a grid whose pitch is adapted to the dimensions of the modules 25. Thus, the lower and upper sides of each module 25 are fixed on two crosspieces 57. consecutive while the lateral sides are fixed on two consecutive uprights 56. Fixing is preferably carried out removably by screws so as to allow replacement of the defective modules. To do this, the screws pass through the carrier structure 55 conventionally through the rear face to be housed in the modules 25. Alternatively, the modules 25 can be fixed by the front face with screws of very small diameter, that is to say ie whose diameter of the head is smaller than the diode pitch of the modules 25.

The uprights of the support structure 55 are fixed at their ends on the lower tube 21 and the upper tube 22 of the facade 10. In a conventional manner, the crosspieces 56 are also fixed at their ends to the lateral tubes 23-24. Alternatively, in order to facilitate the maintenance of the modules 25 fixed by the front face, the crosspieces 57 can be cut into multiple crosspieces 57 whose length corresponds to the width of a module 25. The crosspieces 57 are mounted on the front face between two consecutive amounts 56. It follows that each cross member 57 can be dismounted by the front face when the two modules 25 that it supports are previously dismantled.

On the rear face of the supporting structure 55, other equipment of the panel 11 is arranged, such as a display control system 20 and supply devices 19 of the modules 25.

The cooling devices 37 of the modules 25 are arranged on the lower tube 21, illustrated in FIG. 3. To do this, the lower tube 21 has a shape adapted to penetrate inside the frame 13 of the panel 11. In fact, the lower tube 21 has a bottom wall 27 and an upper wall 30 connected by a front side wall 28 and a rear side wall 29. The rear side wall 29 has a shoulder 31 so that the top wall 30 enters the frame 13 of the panel 11 while the bottom wall 27 is disposed next to the frame 13. It follows that the upper wall 30 has a larger area than the surface of the bottom wall 27.

This extension of the lower tube 21 extending inside the frame 13 of the panel 11 makes it possible to arrange two distinct zones on the lower tube 21. A first zone 35, disposed on the front face, is configured to fix the supporting structure 55 of the modules 25 and a second zone 36, disposed on the rear face, is configured to fix the ventilation devices 37.

The ventilation devices 37 are supplied with air by the air contained in the lower tube 21. To do this, the upper wall 30 has vents 46 arranged facing the air inlet of the ventilation devices 37. Preferably , the vents 46 are circular in shape with a diameter adapted to the diameter of the air inlet of the ventilation devices 37. The air present in the lower tube 21 is in aeraulic communication with the outside air so that the air captured by the ventilation devices 37 corresponds to the outside air. To do this, a plurality of vents 46 are preferably made in the rear side wall 29 between the shoulder 31 and the bottom wall 27.

Preferably, the rear side wall 29 is provided with an air inlet chamber 50 disposed between the shoulder 31 and the bottom wall 27. As illustrated in FIGS. 4 and 5, this chamber 50 is intended to extend below the lower plate 14 of the frame 13 of the panel 11.

The lower plate 14 of the frame 13 of the panel 11 is mounted on a lower tube 60 disposed substantially in the center of the panel 11. The end of the lower plate 14 has a lug 61 extending in a groove 62 formed on the top of the When the facade 10 is mounted on the panel 11, an upper portion 32 of the lower tube 21 located between the shoulder 31 and the upper wall 30 extends above the lower plate 14 of the frame 13 while a lower portion 33 of the lower tube 21 is positioned against the bottom plate 14 of the frame 13. In addition, the chamber 50 extends below the bottom plate 14 so as to capture the outside air below the bottom plate 14. The vent 46 is made on either side of this chamber 50 so that the outside air is captured below the lower plate 14 of the frame 13 of the panel 11. The vent 46 is preferably of rectilinear shape. The vent 46 is preferably provided with a coalescing filter which stores moisture from the outside air to limit the humidity of the air in the chamber. lower tube 21.

Thus, the outside air is conveyed to the ventilation devices 37 along the paths F1 and F2 illustrated in FIG. 3. The air flow is then propelled by the ventilation devices 37 on the rear face of the modules 25 and on the 19-20 equipment. The air is then extracted from the panel 11 by vents, not shown, arranged on the lateral uprights 23-24 near the upper tube 22. Preferably, the lower tube 21, the upper tube 22 and the lateral uprights 23-24 are made from an extruded aluminum profile. Thus, the vents preferably extend on either side of the lateral uprights 23-24 and are of rectangular shape to adapt to the shape of the profile of the lateral uprights 23-24.

As shown in FIG. 6, the upper tube 22 and the lateral uprights 23-24 of the facade also have a shoulder 70 so as to penetrate inside the frame 13 of the panel 11. The upper plate 15 of the frame 13 of the panel 11 is mounted on an upper tube 63 disposed substantially in the center of the panel 11. The end of the upper plate 15 has a lug 64 extending in a groove 65 formed on the underside of a portion of the upper tube 22. The lug 64 has a semi-circular shape cooperating with a semicircular shape of the groove 65 so that the facade 10 is movable in rotation with respect to the panel 11.

This assembly of the facade 10 on the panel 11 is also guided by a hinge 18 disposed on the upper plate 15 and penetrating into a hinge 52 of the upper tube 22.

Alternatively, the front 10 may be mounted on the panel 11 in a non-removable manner without using hinge 18 or pivot connection. In addition, the display panel may be arranged on a wall, mounted on a foot or simply placed on the lower plate without changing the invention. The display panel may also include one or two display surfaces without changing the invention. The invention thus makes it possible to repackage a scrolling panel in a digital display panel. To do this, it suffices to disassemble an existing facade of the scrolling panel and then remove the internal elements of the frame 13. A facade 10 according to the invention is then attached to the existing frame 13, for example by mounting the facade 10 on existing hinges 18. The invention makes it possible to reuse a large part of the existing structure and thus limits the elements to be manufactured, routed, mounted and recycled to repackage a digital panel drop-down panel.

Claims (10)

claims A digital display panel facade (10), said facade (10) having a lower tube (21), an upper tube (22) and side posts (23-24) configured to support a plurality of modules (25) provided with a matrix array of light-emitting diodes, characterized in that said lower tube (21) comprises: - a bottom wall (27), an upper wall (30), a front wall (28), and a rear wall (29) having a shoulder (31) so that a surface of said upper wall (30) is greater than a surface of said bottom wall (27), said surface of said top wall (30) comprising: O a first zone (35) disposed facing said front side wall (28) and configured to secure said modules (25), and O a second zone (36) disposed facing said rear side wall (29) and configured to attach ventilation devices (37), a plurality of vents (45) being aligned in said upper wall (30) at the second zone (36) so that the ventilation devices (37) can suck and propel the air from said lower tube (21) to said modules (25), said tube lower (21) being in aeraulic communication with the exterior of said facade (10). 2. Façade according to claim 1, characterized in that a plurality of vents (46) are formed in said rear side wall (29) between said shoulder (31) and said bottom wall (27) so as to penetrate the air from outside said facade (10) into said lower tube (21). 3. Facade according to claim 2, characterized in that said rear side wall (29) has an air inlet chamber (50) disposed between said shoulder (31) and said bottom wall (27), said vents (46). said rear side wall (29) being made on either side of said air inlet chamber (50). 4. Facade according to claim 2 or 3, characterized in that said vents (46) of said rear side wall (29) are equipped with a filter. 5. Facade according to one of claims 1 to 4, characterized in that the at least one of said lateral uprights (23-24) comprises vents disposed near said upper tube (22) and configured to extract the air contained in said lateral upright (23-24) to the outside of said facade (10), said lateral upright (23-24) being in aeraulic communication with the air ensuring the cooling of said modules (25). 6. Facade according to one of claims 1 to 5, characterized in that said lower tube (21), said upper tube (22) and / or said lateral uprights (23-24) are made from a profile in extruded aluminum. 7. Facade according to one of claims 1 to 6, characterized in that said upper tube (22) or one of said lateral uprights (23-24) has a hinge (52) intended to cooperate with hinges (18) a frame (13) of a digital display panel (11). 8. Facade according to one of claims 1 to 7, characterized in that said modules (25) are mounted on a supporting structure (55) comprising uprights (56) fixed between said lower tube (21) and said upper tube ( 22) and crosspieces (57) removably mounted between said posts (56), a width of said crosspieces (57) being substantially equal to a width of said modules (25). 9. Digital display panel (11) comprising: a frame (13) consisting of a lower plate (14), an upper plate (15) and side plates (16-17), and at least one facade (10) according to one of claims 1 to 8, and wherein a portion (33) of said rear wall (29) between the shoulder (31) and the bottom wall (27) being positioned against said lower plate ( 14) of said frame (13), and - a portion (32) of said rear wall (29) located between the shoulder (31) and the top wall (30) extending above said bottom plate (14) said frame (13). 10. A method of mounting a facade (10) according to one of claims 1 to 8 on a roll-up panel, the method comprising the steps of: dismounting a window of said scrolling panel by extraction of a frame supporting said window hinges (18) of said pull-down panel, removing the internal elements of the pull-down panel, - mounting said facade (10) on said hinges (18) of said pull-down panel by establishing a cooperation between said hinges (18) of said pull-down panel and hinges (52) disposed on said upper tube (22) or one of said side posts (23-24) of said facade (10), - closing said facade (10) on a frame (13) of said rolling panel so that : A part (33) of said rear wall (29) situated between the shoulder (31) and the bottom wall (27) of said facade (10) is positioned against a lower plate (14) of said frame (13), and O a portion (32) of lad said rear wall (29) located between the shoulder (31) and the upper wall (30) of said facade (10) extends above said bottom plate (14) of said frame (13).