Hanging display system

Abstract

The present invention relates to a display system comprising: Two electroconductive cables (2a, 2b) connected to an electrical power supply (3); At least one display device (1) comprising a housing (10) having a front face (F) and a rear face (B); electronic elements (11, 12, 13, 14, 15) including at least display means (13) arranged in the front face (F) of the housing (10) and data processing means (11) configured to control said display means (13);characterized in that the display device (1) further comprises at least two straight magnetic rails (100a, 100b) extending parallel along the rear face of the housing (10) and allowing the display device (1) to be detachably attached to said cables (2a, 2b), said magnetic rails (100a, 100b, 101a, 101b) being electrically connected to the electronic elements (11, 12, 14) of the display device (1) such that when the display device (1) is attached to said cables (2a, 2b), said electronic elements (11, 12, 13, 14, 15) of the display device (1) are supplied with electricity via the magnetic rails (100a, 100b). Fig. 1a;

Description

Title of the invention: Suspended display system

[0001] GENERAL TECHNICAL FIELD

[0002] The present invention relates to the field of illuminated displays, particularly for shop windows. More specifically, it concerns a suspended display system.

[0003] STATE OF THE ART

[0004] Many shop windows, particularly those of real estate agencies, display notice boards suspended for passersby to read. For real estate agencies, these might be advertisements for the sale or rental of properties. For restaurants, they might be menus, etc.

[0005] To avoid frequent replacement, these panels are now most often digital devices equipped with screens. More specifically, they take the form of suspended display systems, powered by cables and controlled remotely. It is possible to select content to be displayed, either statically or dynamically, from a remote computer.

[0006] Several technical solutions aimed at enabling the supply of electrical energy to the panels from an electrical energy source located upstream of the panels have been considered.

[0007] It was first proposed to suspend the panels of the assembly one above the other and to fix them all to two electrically conductive cables parallel to each other, see for example application WO2013178747.

[0008] The cables then serve to distribute electrical energy to each of the panels, as well as to suspend the assembly from a support.

[0009] This solution, however, proves to be rather inflexible. There is a system of hooks that can potentially slide to allow the screens to pivot, but this is limited by the cable length, which must be predetermined.

[0010] To increase modularity, application EP2879121 subsequently proposed a four-magnet hanging system in which the panels can be placed at any height. However, this system requires replacing the two cables with two thick metal support rails, several centimeters thick (to ensure the magnets are strong enough to support the panels), making the system bulky and therefore too unsightly for use in a shop window. Furthermore, these support rails are much more expensive and complicated to install than simple cables because they must be cut to size and securely fixed, whereas the cables can hang freely from the ceiling or even be wound up and concealed when necessary.

[0011] Thus, to keep the cables, it was recently proposed in the application WO2020091309 is a compromise solution in which panels can be clipped onto cables using conductive clips. This offers increased modularity, but each panel repositioning requires time and effort. Furthermore, the clips wear down with each use and eventually lose their elasticity, increasing the risk of panels falling, which is unacceptable.

[0012] The present invention improves the situation. PRESENTATION OF THE INVENTION

[0013] The present invention therefore relates, according to a first aspect, to a display system comprising: - Two electrically conductive cables connected to a power supply; - At least one display device comprising: • a case with a front and a back face; • electronic components including at least display means arranged in the front of the casing and data processing means configured to control said display means;

[0014] characterized in that the display device further comprises at least two straight magnetic rails extending parallel along the rear face of the housing and allowing the display device to be attached in a detachable manner to said cables, said magnetic rails being electrically connected to the electronic elements of the display device so that when the display device is attached to said cables, said electronic elements of the display device are supplied with electricity via the magnetic rails.

[0015] According to advantageous and non-limiting features:

[0016] The display device comprises a first group of at least two straight magnetic rails extending parallel along the rear face of the housing, and a second group of at least two straight magnetic rails extending parallel along the rear face of the housing, the magnetic rails of the first group being orthogonal to the magnetic rails of the second group.

[0017] Each magnetic rail is of a first or a second polarity, all rails of the same polarity being electrically connected.

[0018] Each of the first and group of magnetic rails comprises a magnetic rail of the first polarity and a magnetic rail of the second polarity.

[0019] The system includes means for rectifying the current between the rails of the first polarity and the rails of the second polarity, in particular a diode bridge, through which said electronic elements of the display device are supplied with direct current.

[0020] Each magnetic rail comprises an alignment of permanent magnets arranged in the rear face of the housing, so that when the display device is attached to said cables, said permanent magnets are in contact with the cables.

[0021] Each magnetic rail has a conductive wire electrically connecting at least one magnet of said magnetic rail to the electronic elements of the display device.

[0022] All magnetic rails of the first polarity share the same first conducting wire and all magnetic rails of the second polarity share the same second conducting wire.

[0023] Each magnetic rail has a reinforcing element fixed to the housing and locking the permanent magnets.

[0024] For each magnetic rail, the permanent magnets and the conducting wire are clamped between the housing and the reinforcing element of said magnetic rail. PRESENTATION OF FIGURES

[0025] Other features and advantages of the present invention will become apparent from the following description of a preferred embodiment. This description will be given with reference to the accompanying drawings in which:

[0026] [Fig.la]la [Fig.la] is a general diagram of the display system according to the invention;

[0027] [Fig.lb] [Fig.lb] is a diagram of a version with multiple cables and multiple dis positive display of the display system according to the invention;

[0028] [Fig.2] [Fig.2] is a longitudinal cross-sectional view of the housing of the display device in a first embodiment of the display system according to the invention;

[0029] [Fig.3] [Fig.3] corresponds to [Fig.2] without the magnetic rail reinforcement elements;

[0030] [Fig.4a] [Fig.4a] is a cross-sectional view of the display device of Figures 2 and 3;

[0031] [Fig.4b] [Fig.4b] is a zoomed-in detail of a magnetic rail of [Fig.4a];

[0032] [Fig. 5] [Fig. 5] is a cross-sectional view of the magnetic rails in a second embodiment of the display system according to the invention. DETAILED DESCRIPTION

[0033] General architecture

[0034] With reference to [Fig.1a], the present invention relates to a display system comprising two parts.

[0035] The first part is, in a known manner, a support part, consisting of two electroconductive cables 2a, 2b connected to a power supply 3. By cable is meant here a thin element (typically less than two centimeters in diameter and preferably less than one centimeter in diameter, or even less than half a centimeter). centimeter in diameter), with a substantially circular cross-section, as opposed to solid rails such as those of application EP2879121. Preferably, said cables 2a, 2b are flexible and can, where appropriate, be wound, although alternatively they may be thin rigid rods.

[0036] In all cases, the cables 2a, 2b are preferably fixed to a high point, such as a ceiling or a mobile support, and hang from this high point under the effect of their weight.

[0037] The power supply 3 is connected to the two cables 2a, 2b such that one cable (arbitrarily cable 2a) is a positive terminal and the other cable (arbitrarily cable 2b) is a negative terminal. It can thus be understood that an electrical circuit can be closed by placing an electrical dipole in contact with the two cables 2a, 2b: this dipole is then supplied with electricity via the cables 2a, 2b, which form conductors.

[0038] Preferably, the voltage of said power supply 3 is low so as to prevent a person touching the cables 2a, 2b from being electrocuted. By "low," we mean below a so-called "safety" voltage such that the skin remains generally insulating, typically 50V. Preferably, the voltage of said power supply 3 may thus be 24V, 12V or even 5V.

[0039] The second part of said display system is also, in a known way, the display part proper, i.e. at least one display device 1.

[0040] Each display device 1 comprises a housing 10 having a front face F (“front”) and a rear face B (“back”). The housing 10 is advantageously substantially parallelepiped-shaped and thin, tablet-type, with the faces F and B parallel, although other shapes are possible, and generally made of a plastic material such as ABS.

[0041] Each display device 1 further comprises, as can be seen in particular in Figures 2, 3 and 4a, electronic elements 11, 12, 13, 14, 15 of which at least display means 13 are arranged in the front face F of the housing 10 and data processing means 11 (for example a processor and / or a graphics card) configured to control said display means 13. The display means 13 are typically a screen, potentially protected by a glass (screen which can typically occupy all or almost all of the surface of the front face F) of any material (glass, PMMA, etc.), we can also have, as we will see, a memory 12 (for storing content to be displayed on the display means 13), wireless communication means 14 (for example, a WiFi or Bluetooth card), to communicate via a network 40 (a local network and / or a wide area network such as the internet) with a server 4 through which we can send commands, see content, to the data processing means 11, as well as one or more fans 15. .

[0042] It is perfectly possible to have several display devices 1, fixed on the cables 2a, 2b at various heights.

[0043] It is also possible to have more than two cables (in particular several "positive terminal" cables 2a and / or several "negative terminal" cables 2b, arranged alternately), as long as they are spaced two by two at the same distance several devices 1 can be placed in a staggered arrangement, see [Fig.lb], it being understood that a device 1 is fixed to only two of the cables 2a, 2b.

[0044] Magnetic rails

[0045] As in the prior art, it will be possible to supply said electronic elements 11, 12, 13, 14, 15 of the display device 1 via cables 2a, 2b, but with an original fixing solution.

[0046] To this end, the display device 1 further comprises at least two straight magnetic rails 100a, 100b, 101a, 101b extending parallel along the rear face F of the housing 10 and allowing the display device 1 to be attached detachably to said cables 2a, 2b. It is understood that said rails preferably extend over the entire length of said rear face F.

[0047] Unlike the solution in application EP2879121 where there were two massive rails instead of cables, here miniature rails are cleverly integrated directly into the housing 10. It is understood that the rails 100a, 100b, 101a, 101b are integral with the housing 10, we will see how later.

[0048] These rails 100a, 100b, 101a, 101b are elongated elements which are: - on the one hand, magnetic, that is to say they allow a robust attachment of the display device 1 to said cables 2a, 2b, since said rails extend along the rear face B which allows a good contact surface between the rails 100a, 100b, 101a, 101b and the cables 2a, 2b, as opposed to a "at a few points" attachment, - and on the other hand conductive and electrically connected to the electronic elements 11, 12, 13, 14, 15 of the display device 1 so that when the display device 1 is fixed to said cables 2a, 2b, said electronic elements 11, 12, 13, 14, 15 of the display device 1 are supplied with electricity via the magnetic rails 100a, 100b, 101a, 101b (and via the cables 2a, 2b).

[0049] This solution is very advantageous because: - we can keep 2a, 2b cables thin and flexible, and discreet; - we have complete modularity since we can fix a display device 1 at any height on the cables 2a, 2b in a reversible manner; - Attaching / detaching / moving is easy; it can be done with one hand, thanks to the detachable nature of the magnets. Furthermore, device 1 can be slid along cables 2a and 2b while screen 13 is still visible. remains in operation; - the fixing force remains strong (no risk of a device 1 falling) and does not decrease over time due to the length of the rails.

[0050] Preferably, and as can be seen in Figures 2 and 3 (which represent the inside of the housing 10 with and without reinforcing elements 104 which will be described later, i.e. Figures 2 and 3 represent what is under the screen 13), the display device 1 preferably comprises a first group of at least two straight magnetic rails 100a, 100b extending parallel (to each other) along the rear face F of the housing 10, and a second group of at least two straight magnetic rails 101a, 101b extending parallel (again to each other) along the rear face F of the housing 10, the magnetic rails 100a, 100b of the first group being orthogonal with the magnetic rails 101a, 101b of the second group.

[0051] In other words, there are at least four rails, two in each direction. This gives the rails this "cross" shape in the housing 10, and we can see in particular four crossing points which we will return to later.

[0052] This allows the device 1 to be rotated by 90° and thus to switch from "portrait" mode to "landscape" mode and vice versa. In the orientation of the device 1 shown in Figures 2 and 3, the rails 100a, 100b of the first group are horizontal and the rails 101a, 101b of the second group are vertical, so that it is the latter that are fixed to the cables 2a, 2b.

[0053] It is understood that even if there are more than two rails, the display device 1 is, in practice, in a given position, attached to said cables 2a, 2b by only two rails, in particular either magnetic rails 100a, 100b of the first group, or via magnetic rails 101a, 101b of the second group. Accordingly, preferably, the processing means 11 are capable of detecting which rails 100a, 100b, 101a, 101b are energized and automatically flipping the display on the screen 13 accordingly (so that the display is always in the correct orientation, i.e., readable by the user, regardless of the orientation of the device). Alternatively or in addition, an inclinometer connected to the data processing means 11 can be provided in the device 1 for the same result.

[0054] It should be noted that, preferably, the distance D between the two rails of each group is a predefined value corresponding to the distance between the two cables 2a, 2b so that they fall opposite the rails. If the cables are flexible, however, there is some leeway.

[0055] Each group may comprise more than two rails. For example, if device 1 has an elongated shape (extended landscape mode), there may be 3 rails in a group, preferably two by two spaced a length D apart, i.e., the three rails extend over a length of 2*D. Thus, device 1 can be fixed either on the first and second rail of the group, or on the second and third rail of the group, so as to allow "offset" fixings with an aesthetic effect.

[0056] As explained, we typically have one cable forming a positive terminal and the other cable forming a negative terminal, so that the rails themselves must respect an alternation of polarity in order to be able to close the electrical circuit.

[0057] In other words, each magnetic rail 100a, 100b, 101a, 101b is of either a first or a second polarity, all rails of the same polarity being electrically connected directly, i.e., being at the same potential. Note that we have deliberately referred to "first" and "second" polarity; we can arbitrarily define the first polarity as the positive polarity and the second polarity as the negative polarity, that is to say, a rail of the first polarity must be in contact with the cable forming the positive terminal and a rail of the second polarity must be in contact with the cable forming the negative terminal. However, we will see later a very advantageous embodiment that allows for automatic polarity reversal in which there is no need to pay attention to the polarity (the device 1 can be attached to the cables 2a, 2b without any further thought).

[0058] In the case of two rail groups, each of the first and second magnetic rail groups comprises one magnetic rail of the first polarity and one magnetic rail of the second polarity. In Figures 2 and 3: - rail 100a is the first polarity rail of the first group; - rail 100b is the second polarity rail of the first group; - rail 101a is the first polarity rail of the second group; - Rail 101b is the second polarity rail of the second group.

[0059] If there are more than two rails in a group, it is necessary to alternate the polarities (i.e. first polarity; then second polarity; then first polarity), so that no two rails next to each other have the same polarity and the device is always supplied correctly regardless of its position.

[0060] Rectifier bridge

[0061] In a particularly preferred manner, the system (and more particularly the device 1) includes means for rectifying the current 16 between the rails of the first polarity 100a, 101a and the rails of the second polarity 100b, 101b, in particular a diode bridge (or "Graetz" bridge), through which said electronic elements 11, 12, 13, 14, 15 of the display device 1 are supplied with direct current, in this case rectified.

[0062] More specifically, the current rectification means 16 have a first input terminal connected to the first polarity rails 100a, 101a and a second input terminal connected to the second polarity rails 100b, 101b, and the output voltage is always the absolute value of the input voltage, i.e., the difference between the first polarity and second polarity.

[0063] This ensures that a positive voltage is always supplied to the electronic elements 11, 12, 13, 14, 15 of the display device 1: - first case, a rail of the first polarity is in contact with the cable forming positive terminal and a rail of the second polarity is in contact with the cable forming negative terminal: we have first polarity > second polarity, and the voltage first polarity - second polarity is indeed positive and everything is fine (the output of means 16 is equal to the input); - In the second case, a rail of the first polarity is in contact with the cable forming the negative terminal, and a rail of the second polarity is in contact with the cable forming the positive terminal: the connection is then "reversed" since first polarity < second polarity, and therefore first polarity - second polarity is negative. By construction, the output of means 16 is first polarity - second polarity = second polarity - first polarity, that is to say, the first and second polarities have been virtually reversed.

[0064] Besides the fact that this embodiment is very practical for the user because they cannot make a polarity error, it allows additional positions of the device 1, because it is possible, for example, to rotate it 180°. In doing so, if we start from the example in Figures 2 and 3 and completely reverse the device 1, we swap the rails 101a and 101b and therefore reverse their polarity, but this is rectified by means 16. This also allows devices 1 to be placed on both sides of the cables 2a, 2b (which amounts to symmetrizing the device 1 in Figures 2 and 3, and again swapping the rails 101a and 101b and therefore reversing their polarity).

[0065] Rail structure

[0066] According to a preferred embodiment, each magnetic rail 100a, 100b, 101a, 101b comprises a plurality of permanent magnets 102 arranged, and even advantageously embedded (in an aligned manner) in the rear face B of the housing 10, so that when the display device 1 is attached to said cables 2a, 2b (via two given rails), said permanent magnets 102 (of these given rails) are in contact with the cables 2a, 2b.

[0067] In other words, the power supply is directly via said magnets 102 (and even preferably only via said magnets 102), which act as contactors, i.e., the current flows through the magnets, which themselves have the dual function of fastening and electrical connection elements. To this end, the rear face B typically includes openings through which the magnets 102 can be "accessed" to make electrical contact, openings preferably smaller than the magnets 102 so that the latter cannot come out of them. And even, as can be seen in [Fig. 4a], said openings can advantageously taking the form of a groove extending along the rear face B, forming a guide for a cable 2a, 2b, and increasing grip: the cables 2a, 2b engage automatically in it due to the magnetic attraction of the rails 100a, 100b, 101a, 101b, which further limits the risk of detachment and further improves the aesthetics because the cables 2a, 2b disappear at least partially into the rear face B. To reformulate, preferably, the rear face B of the housing 10 has a shape complementary to that of the cables 2a, 2b, allowing for increased fixation; i.e., in the fixed state, the rear face B of the housing 10 cooperates with the cables 2a, 2b.

[0068] As such, the housing 10 can include housings the size of the magnets 102 so as to place the latter from the inside, during the assembly of the device 1. There can be at least ten, or even at least fifteen, magnets 102 in a magnetic rail 100a, 100b, 101a, 101b, and even if there can be small spaces between the housings, preferably at least 50% or even at least 75% or even at least 90% of the length of the magnetic rail 100a, 100b, 101a, 101b is made up of magnets 102 so as to have the strongest possible fixing force.

[0069] To allow power to be supplied directly via the magnets 102, the device 1 includes conductive wires 103a, 103b (for example copper wires), and each magnetic rail 100a, 100b, 101a, 101b advantageously has a conductive wire 103a, 103b electrically connecting at least one magnet 102 (and in practice a plurality as seen in [Fig.3], although not necessarily all) of said magnetic rail 100a, 100b, 101a, 101b to the electronic elements 11, 12, 13, 14, 15 of the display device 1.

[0070] For example, said conductor wire 103a, 103b of a rail can be soldered to magnets 102 of this rail on the inside side of the housing 10 (the side opposite the openings in face F), or simply kept in contact with the magnets 102, see further.

[0071] Preferably, there are two conducting wires 103a, 103b, of which a first conducting wire 103a and a second conducting wire 103b; and all the magnetic rails of the first polarity 100a, 101a share the same conducting wire (the first wire 103a) and all the magnetic rails of the second polarity (100b, 101b) share the same conducting wire (the second wire 103b). In other words, the first conductive wire 103a electrically connects at least one magnet 102 of each magnetic rail of the first polarity 100a, 101a to the electronic elements 11, 12, 13, 14, 15 of the display device 1 (in particular to one terminal of the current rectifier means 16) and the second conductive wire 103b electrically connects at least one magnet 102 of each magnetic rail of the second polarity 100b, 101b to the electronic elements 11, 12, 13, 14, 15 of the display device 1 (in particular to the other terminal of the current rectifier means 16).

[0072] In the case of two orthogonal groups of two magnetic rails 100a, 100b, 101a, 101b, thus the first conductor wire 103a electrically connects magnets 102 of the magnetic rail of the first group of the first polarity 100a and of the magnetic rail of the second group of the first polarity 101a and the second conductor wire 103b electrically connects magnets 102 of the magnetic rail of the first group of the second polarity 100b and of the magnetic rail of the second group of the second polarity 101b. As such, the first and second conductor wires 103a, 103b typically take an "L" shape, ensuring simple and efficient electrical contact to all rails of the same polarity.

[0073] To lock the magnets 102 (in their housings) and ensure the strength of the structure, each magnetic rail 100a, 100b, 101a, 101b preferably has a reinforcing element 104 attached to the housing 10, for example screwed in, extending along the rear face B, the reinforcing elements 104 being visible in [Fig. 2] and removed in [Fig. 3]. A "sandwich" structure can thus be obtained in which at least the magnets 102 and advantageously the conducting wires 103a, 103b are sandwiched between the reinforcing element 104 and a portion of the housing 10 forming a support area (in particular around the opening). Such a structure is very compact, discreet, easy to assemble, protects the magnets 102 and the wires 103a, 103b, and guarantees reliable electrical conductivity without the need to solder the wires 103a, 103b onto the magnets 102.

[0074] According to the embodiment of [Fig.4a] (see zoomed [Fig.4b]), the reinforcing element 104 is screwed into the inner side of the housing 10 during the manufacture of the device 1, i.e. going from the inside to the outside (i.e. going up in [Fig.4b]) one successively encounters the reinforcing element 104, a conducting wire 103a, 103b, the magnet 102, and the housing 10. It can be seen that the reinforcing element 104 can include a groove dedicated to receiving the conducting wire 103a, 103b from the rail.

[0075] According to the alternative embodiment of [Fig. 5] (see zoomed-in details), the reinforcing element 104 is clipped to the outer side of the housing 10 (i.e., face B) and directly contains the openings. Thus, moving from the inside out (i.e., upwards in [Fig. 5]), one successively encounters the housing 10, a conductive wire 103a, 130b, the magnet 102, and the reinforcing element 104. This embodiment is slightly less aesthetically pleasing than that of [Fig. 4b] (where everything is invisible), but it has two additional advantages: it allows at least one outer part of the housing 10 to be made of a conductive material (such as aluminum) since it is sufficient for the reinforcing element 104 and an inner part of the housing 10 (see [Fig. 5]) to be insulating, and the size and shape of the opening for cables 2a, 2b so as to have the best possible support.

[0076] It remains entirely possible to have one-piece magnetic rails 100a, 100b, 101a, 101b fixed on the rear face B of the housing 10.

[0077] It also remains entirely possible that the magnetic rails 100a, 100b, 101a,

[0078]

[0079] 101b include electrical contactors in contact with cables 2a, 2b rather than magnets. According to a second aspect, the invention relates to a method for displaying content on the device 1 of a display system as described above, comprising steps of - Contact of the rear face B of the display device 1 with the cables 2a, 2b. The device 1 attaches magnetically to the rails 100a, 100b, 101a, 101b, which automatically supplies electricity to the electronic elements 11, 12, 13, 14, 15 of the display device 1 by contact. - Implementation by the processing means 11 of the display of at least one content (stored on the memory 12 and / or accessible remotely via the wireless communication means 14) by the display means 13. The data processing means 11 can be configured to automatically implement this display as soon as they are electrically powered. Therefore, there is nothing else to do but place device 1 in the desired location. If it is removed and then repositioned, the display of content will pause and then resume automatically.

Claims

Claims

1. Display system comprising: - Two electrically conductive cables (2a, 2b) connected to a power supply (3); - At least one display device (1) comprising • a housing (10) having a front face (F) and a rear face (B); • electronic elements (11, 12, 13, 14, 15) including at least display means (13) arranged in the front face (F) of the housing (10) and data processing means (11) configured to control said display means (13);characterized in that the display device (1) further comprises at least two rectilinear magnetic rails (100a, 100b, 101a, 101b) extending parallel along the rear face (B) of the housing (10) and allowing the display device (1) to be detachably fixed to said cables (2a, 2b), said magnetic rails (100a, 100b, 101a, 101b) being electrically connected to the electronic elements (11, 12, 13, 14, 15) of the display device (1) so that when the display device (1) is fixed to said cables (2a, 2b), said electronic elements (11, 12, 13, 14, 15) of the display device (1) are supplied with electricity via the magnetic rails (100a, 100b, 101a, 101b).;

2. A display system according to claim 1, wherein the display device (1) comprises a first group of at least two rectilinear magnetic rails (100a, 100b) extending parallel along the rear face (B) of the housing (10), and a second group of at least two rectilinear magnetic rails (101a, 101b) extending parallel along the rear face (F) of the housing (10), the magnetic rails (100a, 100b) of the first group being orthogonal to the magnetic rails (101a, 101b) of the second group.

3. A display system according to one of claims 1 and 2, wherein each magnetic rail (100a, 100b, 101a, 101b) is of a first or a second polarity, all rails of the same polarity being electrically connected.

4. A display system according to claims 2 and 3 in combination, wherein each of the first and second groups of magnetic rails comprises a magnetic rail of the first polarity (100a, 101a) and a magnetic rail of the second polarity (100b, 101b).

5. Display system according to one of claims 3 and 4, comprising current rectifying means (16) between the rails of the first polarity (100a, 101a) and the rails of the second polarity (100b, 101b), in particular a diode bridge, via which said electronic elements (11, 12, 13, 14, 15) of the display device (1) are supplied with direct current.

6. A display system according to one of claims 1 to 5, wherein each magnetic rail (100a, 100b, 101a, 101b) comprises an alignment of permanent magnets (102) arranged in the rear face (B) of the housing (10), so that when the display device (1) is attached to said cables (2a, 2b), said permanent magnets (102) are in contact with the cables (2a, 2b).

7. Display system according to claim 6, wherein each magnetic rail (100a, 100b, 101a, 101b) has a conductive wire (103a, 103b) electrically connecting at least one magnet (102) of said magnetic rail (100a, 100b, 101a, 101b) to the electronic elements (11, 12, 13, 14, 15) of the display device (1).

8. A display system according to claims 3 and 7, in combination, wherein all the magnetic rails of the first polarity (100a, 101a) share a same first conductive wire (103a) and all the magnetic rails of the second polarity (100b, 101b) share a same second conductive wire (103b).

9. Display system according to one of claims 6 to 8, in which each magnetic rail (100a, 100b, 101a, 101b) has a reinforcing element (104) fixed to the housing (10) and locking the permanent magnets (102).

10. A display system according to claims 7 and 9 in combination, wherein for each magnetic rail (100a, 100b, 101a, 101b), the permanent magnets (102) and the conductive wire (103a, 103b) are sandwiched between the housing (10) and the reinforcing element (104) of said magnetic rail (100a, 100b, 101a, 101b).

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