EP3926612A1 - Display device with electronic image display - Google Patents

Abstract

A display device (1) has at least one electronic image display (3) which is arranged on a display support (2). A stand device (4) supports the display support against the substrate on which the display device is placed. In order to enable the display device to give way or to give way when it comes into contact with people, the display support (2) is pivotably coupled to the stand device (4) on one side .In one embodiment, controllable holding means (14, 8) are arranged between the display support (2) and stand device (4), which lock the display support (2) in the display position and are temporarily deactivated by a control device (10) when a detection device ( 5) detects a person approaching the display device (1). In a further embodiment, the display support can be pivoted at any time by the action of force, but restoring means are provided which return the display support to the display position after the contact is lost.

Description

The invention relates to a display device with an electronic image display. In particular, the invention relates to a display device in which the electronic image display is arranged on a display carrier, the display carrier being coupled to a stand device which is designed to be placed on or attached to a substrate.

The display support provides a holder for the electronic image display. A stand device coupled to the display carrier secures the display carrier on the ground against tilting or shifting. For this purpose, the stand device is provided with support surfaces or a leg construction, which allows a secure stand on the ground. Fastening points can also be provided on the stand device in order to allow it to be fixed to a prepared substrate.

Display devices of the type mentioned can be used in many areas, for example as signposts, for displaying news and current information and in particular for advertising purposes. Corresponding display devices are used particularly in the context of sporting events, where display devices in the form of video tapes are known, for example. The display devices are arranged in the edge area, outside of the playing field or the competition track, with so-called free zones being observed for safety reasons. This is necessary in order to reduce the risks for athletes who could collide with such display devices during the game and would thus be exposed to a risk of injury. Such display devices can also be used in a number of other sports areas, for example those that are operated without boundaries of the playing field and instead with routes. For example, in the Biathlon or cross-country skiing gangs are used for various display purposes along the route. So-called V-stands ensure a route that prevents the athlete from taking the wrong path in competition.

In order to minimize the risk of injury on contact with such display devices, these can be provided with padding. In addition, the free zones, that is, distances from the active game, are dimensioned in such a way that the risk of injury is reduced, the type and structure of the display device also having to be taken into account when dimensioning the free zone.

The object of the invention is to provide a display device which reduces the risk of injury to athletes.

This object is achieved by a display device with the features of the independent patent claims.

According to a first aspect of the invention, a display device according to the invention of the type mentioned at the outset has a pivotable coupling of the display carrier to the stand device. Via this pivotable coupling, the display carrier can be pivoted between a folded position and a display position with respect to the stand device.

The display position is characterized in that the display carrier encloses such an angle with the stand device that the display carrier, together with the electronic image display attached to it, is in an erected, clearly visible position in relation to the background. It is not necessary here for the electronic image display to be aligned vertically with respect to the ground, but the electronic display has to be at an angle that allows good visibility and legibility when viewed from a horizontal or raised viewing angle. Such an angle of the display device relative to the background is usually between a few degrees (close to 0 degrees), but preferably between 40 degrees and 90 degrees (with the display facing up or diagonally up).

In the folded position, on the other hand, the display support forms a more acute angle with the stand device, so the display support is approximated to the stand device and the underlying surface. The entire display device is then folded flat (or also folded) with respect to the display layer, which explains the designation of the folded position. The angle that the display carrier assumes in relation to the underlying stand device is less in this folded position than in the display position, i.e. less than 40 degrees, for example.

As far as the design and shaping of both the display carrier and the electronic display as well as the stand device are concerned, there are hardly any design limits. The display carrier can, for example, have a carrier plate on which several modules of electronic image displays are placed. It can also be a frame in which one or more panels of an electronic image display is / are inserted or suspended. In particular, the display support can form an elongated, flat element or element formed by struts and rungs, which is arranged with its longitudinal extent parallel to the ground, i.e. extends longer in width than in height when arranged on the stand device and placed on the ground, accordingly the stretched form of well-known perimeter advertising.

In the edge areas of the display support and the electronic image display arranged thereon, cushions or damping elements can be located in order to provide edge protection that protects both the electronic image display and persons who come into inadvertent physical contact with the display device. For such protection can in edge areas of the display carrier and the electronic image display Foam or rubber bumpers, as well as air cushions or gel pads can be attached.

The electronic image display itself can be glued, screwed, clipped or otherwise fastened to the display carrier. Mechanical protective elements can also be used to protect the electronic image display against mechanical effects. When using LED diodes or other sensitive display technologies, for example, transparent protective devices made of transparent plastic or potting compounds can be used, as well as so-called shaders, i.e. plastic grids in which the display elements of the electronic display device are embedded. Projection devices can also be used as electronic display devices. Flexible elements can also be incorporated into the display carrier as cushions or carriers, which cushion the electronic image display modules against impacts or impacts.

The stand device, which is designed to rest on the ground or to be attached to the ground, can also have a flat construction or several support legs or support webs to which the display support is pivotably attached. The pivotable connection can be created by bearings or hinges or by any other coupling means which allow a repeated pivoting movement of the display support relative to the stand device.

According to the first aspect of the invention, holding means are provided which are arranged with an effect between the display support and the stand device and hold the display support in the display position. The holding means are those holding means whose holding effect can be canceled by activation. The holding force of the holding means, which stabilizes the display carrier with respect to the stand device against a pivoting movement, should therefore be able to be reduced or canceled by control. Any cancelable ones come here mechanical locks, as well as hydraulic or pneumatic locks in question. If the display carrier is in the display position, the holding means have the effect that it remains stable in this and the display device can thus develop its display effect.

The combination of the features mentioned above provides a display device in which a display carrier can be pivoted with respect to a stand device, whereby it is held in a display position by appropriately controllable holding means against this pivoting movement. In order to release the display carrier from the display position as required, that is to say to cancel the effect of the holding means with regard to their fixation of the display carrier in the display position, a control device is coupled to the holding means. In turn, a detection device can be coupled to the control device, which detects an approach of a person to the display device and cancels the holding effect of the holding means as a function of the detected approach. The detection device can be part of the display device itself, but the detection device can also be an external detection device that generates control signals that are transmitted to the control device in a wireless or wired manner.

The detection device ensures that an approach of a person to the display device is recognized. An approach of an athlete in the area of the playing field on which the display device is placed is detected, the control device receives corresponding approach data or control data and the risk of injury for the athlete is reduced by releasing the holding means so that the display support moves in the direction of its folded position becomes pivotable. The display device is thereby resilient to an impact by the athlete. In such a state, the display device does not pose a significant risk of injury to the Sportsman is more, because when he physically affects the display device, he does not collide with a stiffened display device, but against a display device which gives way to the body of the athlete.

The control device does not necessarily cancel the holding effect in every case in which any approach of a person to the display device is detected. Rather, depending on the type of approach detected, the control device can only provide for a release of the holding means for cases of approach that meet the specified criteria. For example, if a person approaches with a trajectory that does not approach the display device or approaches it very diagonally, the stopping effect can be completely dispensed with, since there is no significant risk of injury.

In order to implement such a function, the recognition of different criteria with regard to the approaches of people is used. The availability of measured values for approximation and thus the ability to test criteria for the type of approximation depends largely on the detection device used. A detection device within the meaning of the invention, which detects an approach of a person to the display device, can have any types of monitoring systems, provided that these can detect a change in position of bodies in space in the direction of the display device. Known proximity sensors are capacitive sensors or ultrasonic sensors which detect a body when it approaches a corresponding sensor. Radar sensors can also be used. Alternatively, optical monitoring systems, in particular light barriers, infrared sensors or laser barriers, can be used, which are placed at a distance from the display device and allow an approaching athlete to be detected on the display device. By placing several With such light barriers and lasers it is also possible to draw conclusions about the speed of the approach. Finally, detection systems can also be used which, for example, provide a detectable element for placement on the athlete's body or clothing. For example, RFID sensors on the sportswear can detect the approach of the athlete with a corresponding detection device on the display device. Such a system also allows a certain selectivity, since, for example, the approach of other objects (birds, files, balls, etc.) does not lead to false tripping.

A particular possibility of proximity detection that should be emphasized is the use of camera systems, in particular camera systems, which allow spatial detection. On the one hand, 3D cameras are known for this purpose, which, for example, can be used as time-of-flight cameras for monitoring traffic in motor vehicles to detect approaches. Such a system can be placed on or next to the display device and continuously detects the approach of people to the display device, as well as their speed.

Furthermore, triangulating camera systems can also be used, as they are already used at sporting events. A known system in this regard is the system with the brand name Hawk-Eye from the company Hawk-Eye Innovations Ltd., which monitors the movement of objects in the playing field area with great precision using a plurality of cameras, downstream image recognition and triangulation based on known camera positions. If such a system is fed with the position data of a display device, when a person approaches the display device, the corresponding control device can be supplied wirelessly or wired with a control signal, so that it controls the holding means accordingly undertakes to defuse the relevant display device as a risk of injury.

Regardless of the type of detection, an actual movement of the display carrier from the display position into the folded position can initially take place as a result of the force of an impact itself. However, an active folding movement or folding movement in the direction of the folded position can also be brought about or a combination of these processes, i.e. a folding movement due to an external influence and due to the design or control of the display device itself.

The display device preferably also has resetting means that act between the display carrier and the stand device, which move the display carrier from the direction of the folded position into the display position. The restoring means have the task of moving a display carrier that has been moved in the direction of the folded position back into the display position, in which it is then held by the controllable holding means. These return means can also be formed by mechanical, motor-driven, hydraulic and pneumatic means or a combination thereof. When motor drives are mentioned in the context of this application, this particularly includes drives which allow electronic control. This also includes drives which have gears or other means for power transmission and / or power deflection. For example, flexible shafts on the drive can serve as a means of deflecting and introducing force. The term also includes gears, bevel gears, chain drives or other power transmissions or power deflection means, for example also drive trains as they are known from the field of transport, e.g. bicycles (belt or chain drives or also power transmissions with other bicycle drive trains such as " ceramicspeed "transmission lines).

After a process of movement into the folded position has taken place, i.e. after the holding means have been released and, if necessary, the athlete has also acted on the display device, the return means can cause the display support to straighten up again and pivot into the display position and the holding means are activated again in order to hold the display carrier in this display position. The return can be electronically controlled when using controllable return means - e.g. when using motorized, active pneumatic or active hydraulic return means, but it can also be a purely mechanical return, for example if spring elements or other passive mechanical return elements are used.

When the reset is activated, the reset process can be made dependent on sensor data, e.g. if it is detected that there is no longer any person in the area of the display device. Alternatively, the reset can also take place after a predetermined period of time or in response to a control signal. After resetting, the control device causes the holding means to be activated again, thereby stabilizing the display carrier in the display position.

In addition to the advantages of reducing the risk of injury, the display device according to the invention offers numerous advantages. It can be installed in a simple and modular manner in the area of sports facilities, is mobile and can be controlled in a variety of ways. Any desired display devices, but in particular LED panels, can be used as the electronic display device. Several of the display devices can be coupled with regard to their displayed content. In particular, the electronic image displays can contain independent receiving parts that show external data on the display. Alternatively, in any Display device, a central playback device or receiving device for signal data may be present.

An electrical supply of the corresponding display devices, if necessary, can take place via central power supply units, power supply units assigned separately to each display, or power storage units or generators.

In a preferred development of the invention, folding means are provided which are arranged between the display carrier and the stand device and which drive or pretension the display carrier to move in the direction of the folded position.

In this embodiment, the folding movement or evasive movement of the display carrier is actively supported by the folding means. As soon as the control device cancels the action of the holding means in response to an approach, that is to say relinquishes the locking of the display carrier in the display position, the folding means act and pull or pivot the display carrier in the direction of the folded position. In this way, an active evasive movement of the display carrier is brought about, which further reduces the risk of injury in the event of a collision with an athlete, since a collision with the athlete can be reduced or completely avoided because the display carrier moves out of the path of movement of the athlete. The folding means can have motor-driven actuators which bring about the pivoting movement, but they can also be tensioning elements, for example spiral springs or torsion springs. In such a case, the display carrier is pretensioned in the display position in the direction of the folded position, but is prevented from moving by the holding means. As soon as the holding means are released, the display support folds or folds into the folded position. The restoring means can then tension the folding means again by pivoting the display carrier back into the display position, where the holding means are activated again by the control device.

In a preferred embodiment of the invention, the folding means have a controllable folding drive which is coupled to the control device. The control device controls the folding drive after activation to cancel the holding effect of the holding means (or simultaneously with this) in order to move the display carrier out of the display position in the direction of the folded position.

Activation of the folding drive ensures active movement of the display carrier into the folded position. This active movement can be supported by a bias or gravity. The activation of the folding drive can also be adapted as a function of the detected approach. Depending on the speed and / or the direction of the approach, metered activation can take place in order to reduce the risk of injury and, on the other hand, to enable the display device to be gentle on the material.

In a preferred embodiment of the invention, the detection device is arranged on the display device itself.

As mentioned above, numerous different devices can be used as detection devices. When the detection device is arranged on the display device itself, a highly modular and compact system is created, since the detection device can always be transported together with the display device and it has a fixed spatial relationship to the display device. In particular, camera systems, ultrasonic sensors, radar sensors or even capacitive sensors come into consideration as systems for detecting proximity.

It is particularly preferred if the holding means have releasable mechanical latching means which latch the display carrier in relation to the stand device in the display position.

The use of lockable holding means has the advantage that there is no continuous hold to maintain the holding effect Control or maintenance of a circuit or an energy supply is required. The locking means are only activated to cancel the holding effect and a mechanical locking effect is canceled by releasing the locking, for example by means of electromagnetic actuators.

In a preferred embodiment of the invention, the restoring means also have a spring which urges the display carrier from the direction of the folded position into the display position.

In this design, the return movement of the display carrier into the display position is supported or entirely caused by the spring action. In its simplest form, a display device can then look such that when an approach is detected, the holding means are released, but the display carrier remains held in this position by the spring action of the return means until contact with the athlete. If there is a collision with a person, the display carrier and its display evade, the spring of the restoring means absorbing the impact force and, after the collision has been eliminated, guides the display carrier back into the display position, in which the holding means are then reactivated.

In a further development of the display device according to the invention, the return means are designed with a motorized return drive which moves the display carrier from the folded position into the display position. Such return means can be placed, for example, in the area of the pivot axis between the display carrier and the stand device. Alternatively, however, pneumatic or hydraulic systems can also be provided which force a return movement with motor-driven pumps.

It is particularly preferred if the control device is designed to control the holding means as a function of a to control the detected approach speed of a person to the display device to release the display carrier.

In order to avoid unnecessary folding movements and thus to reduce the effect of the display device, it can be provided that the holding effect of the display carrier is only canceled when a certain approach speed is exceeded. This ensures that the advertising effect and display effect of the display device is only canceled in those situations in which there is actually a risk of injury to a person. For example, when the approach of an athlete is detected, it can be determined whether he is approaching the display device at high speed or at low speed (with a high speed being, for example, more than 10 km / h). When approaching at high speed, the control device causes the stopping effect to be canceled.

In a preferred embodiment of the display device according to the invention, it is also provided that the control device has a receiving device via which control signals can be received from an external detection device and wherein the control device cancels the effect of the holding means as a function of the control signals. In such a configuration, as already indicated above, a central optical monitoring system can be used which forwards control signals to one or more display devices according to the invention. A complex optical detection and evaluation can then take place in a centralized manner and the control device in the display devices themselves can be constructed relatively simply, namely by receiving and converting a control signal without being burdened by the complex evaluation.

According to a further aspect of the invention, the display device has modified technical features. According to this further aspect of the invention is a display device of the type mentioned at the outset, characterized in that the display carrier is coupled to the stand device such that it can pivot on one side and, as described in the first aspect of the invention, is pivotable relative to the stand device between a folded position and a display position.

In addition, resetting means are arranged between the display carrier and the stand device, which force the display carrier out of the folded position into the display position.

In its basic form, the display device according to this aspect of the invention manages without holding means and without a control device with an associated detection device. Instead, return means are used, which at any time cause a tensioning effect of the display carrier in the direction of the display position.

These restoring means also have the effect that the display carrier is returned to the display position again when it has moved out of the display position in the direction of the folded position (e.g. due to the action of a collision between an athlete and the display device). The restoring effect is thus provided by the same elements that also hold the display carrier in the display position. The restoring means can be elastic restoring means or other controllable restoring means. For example, hydraulic systems, mechanical spring systems or pneumatic systems are possible.

In a preferred embodiment of the invention according to the further aspect, an elastically deformable first deformation element is provided, which is arranged between the display carrier and the stand device and urges or biases the display carrier from the direction of the folded position into the display position.

Such a return means can be, for example, a spring or a foam means, as well as an air cushion or gel cushion. The deformability makes it possible that when force is applied by collision with a person, the display carrier is moved from its display position in the direction of the folded position. When the load is relieved, the display carrier moves back into the display position by resetting or expansion or relaxation of the resetting means.

Such a construction of the display device is particularly simple, manages without electrical connections for the actuating means and is highly portable and quick to install.

In another preferred embodiment according to the second aspect of the invention, at least one pressurized damping element is provided as the return means, which is arranged between the display carrier and the stand device and urges the display carrier from the direction of the folded position into the display position. Such a pressurized damping element can be provided, for example, by one or more gas pressure springs which provide a resilient mounting of the display element in the display position.

In a particularly preferred embodiment, the pressurized damping element is provided with a relief valve which responds when a predetermined pressure in the damping element is exceeded and reduces or cancels the restoring effect. Such an overpressure element can be particularly advantageous, for example, in the case of a pneumatic configuration of the return means. If the force of a collision of an athlete acts on the display device and in particular the display carrier, the pressure in the damping element increases, the valve opens and relief enables the display carrier to move away. The relief valve should be set so sensitively that, although it does not respond to normal environmental loads (for example wind loads or rain loads), it responds quickly in the event of a collision with an athlete.

In a preferred embodiment, a pressure build-up device is also coupled to the damping element in order to build up a predetermined restoring pressure in the damping element. The erection of the display support from the folded position into the display position can be brought about by rebuilding a predetermined pressure. A corresponding pressure build-up device can, for example, also be coupled to a plurality of display devices at the same time as a central compressor with pre-reduced pressure. The pressure build-up device is reduced to a feed pressure which is below the response threshold of the relief valve, if one is present.

• Figur 1a zeigte eine Anzeigevorrichtung gemäß dem ersten Aspekt der Erfindung in einer ersten Ausführungsform in einer Frontansicht;
• Figur 1b zeigt die Anzeigevorrichtung aus Figur 1a in einer Schrägansicht von vorne;
• Figur 2 zeigt die Anzeigevorrichtung aus den Figuren 1a und 1b in einer Schrägansicht von hinten mit Detailvergrößerung;
• Figur 3a zeigt die Anzeigevorrichtung gemäß der ersten Ausführungsform in einer Seitenansicht mit Detailvergrößerung, wobei sich der Anzeigeträger in einer Anzeigelage befindet;
• Figur 3b zeigt die Anordnung aus Figur 3a, wobei sich der Anzeigeträger in einer Faltlage befindet;
• Figur 4a zeigt eine Anzeigevorrichtung gemäß einer zweiten Ausführungsform in einer Schrägansicht von vorne;
• Figur 4b zeigt die Anzeigevorrichtung aus Figur 4a in einer Schrägansicht von hinten;
• Figur 4c zeigt die Anzeigevorrichtung aus Figur 4a in einer Schrägansicht von hinten mit Detailvergrösserung;
• Figur 4d zeigt die Anzeigevorrichtung aus Figur 4a in einer Frontansicht;
• Figur 4e zeigt die Anzeigevorrichtung aus Figur 4a in einer Seitenansicht;
• Figur 5a zeigt eine Anzeigevorrichtung gemäß einem dritten Ausführungsbeispiel in einer Schrägansicht von vorne;
• Figur 5b zeigt die Anzeigevorrichtung aus Figur 5a in einer ersten Schrägansicht von hinten;
• Figur 5c zeigt die Anzeigevorrichtung aus Figur 5a in einer zweiten Schrägansicht von hinten;
• Figur 5d zeigt die Anzeigevorrichtung aus Figur 5c mit entnommenem Rückstellelement.

The invention will now be explained with reference to the accompanying drawing.

• Figure 1a shows a display device according to the first aspect of the invention in a first embodiment in a front view;
• Figure 1b shows the display device Figure 1a in an oblique view from the front;
• Figure 2 shows the display device from the Figures 1a and 1b in an oblique view from behind with an enlarged detail;
• Figure 3a shows the display device according to the first embodiment in a side view with enlarged detail, the display carrier being in a display position;
• Figure 3b shows the arrangement Figure 3a , wherein the display carrier is in a folded position;
• Figure 4a shows a display device according to a second embodiment in an oblique view from the front;
• Figure 4b shows the display device Figure 4a in an oblique view from the rear;
• Figure 4c shows the display device Figure 4a in an oblique view from behind with enlarged detail;
• Figure 4d shows the display device Figure 4a in a front view;
• Figure 4e shows the display device Figure 4a in a side view;
• Figure 5a shows a display device according to a third embodiment in an oblique view from the front;
• Figure 5b shows the display device Figure 5a in a first oblique view from behind;
• Figure 5c shows the display device Figure 5a in a second oblique view from behind;
• Figure 5d shows the display device Figure 5c with the reset element removed.

In the Figures 1a and 1b a display device 1 is shown. The display device has a display support 2 which provides a support frame and a mounting surface for a plurality of electronic display panels 3. A stand device 4 is arranged below the display carrier 2. In this example, this is designed to rest on the ground with a tub construction with a circumferential edge and is pivotably coupled to the display carrier 2. A detection device 5 in the form of a 3D camera is arranged on the display carrier 2. The display support 2 has a circumferential rubber padding in order to protect both the attached display panels 3 and people who come into contact with the display support 2.

Figure 2 shows a rear view of the display device 1. In this illustration, the pivot connection between the display carrier 2 and the stand device 4 can be seen. Rotary bearings 6 are arranged on the stand device 4. A shaft 7 is coupled to these rotary bearings, which in turn is connected non-rotatably to corresponding fastening points on the display carrier 2. Several belts 8 are coupled to drives 9 which are arranged on the stand device 4. The belts 8 drive gear wheels 11 coupled to the shaft 7 in order to pivot the display carrier 2 against the stand device 4. One The control device 10 is coupled on the stand device 4 to both the drives 9 and the detection device 5. A lockable drive lock in the area of the drives 9 acts as a controllable holding means 14 which locks the display carrier in the display position. The lock can act on a gear, the belt or even on the motor itself - it is also possible that the de-energized motor itself develops the locking effect. Even with currentless drives 9, the display carrier is held in the display position in this way. The lock is preferably designed as a holding means 14 in such a way that it engages when the display position is reached and can be released by energizing it, initiated by the control device 10.

The combination of drives 9, belts 8 and gears 11 represent restoring means which can move the display carrier into the display position. A plurality of spiral springs 15 are coupled between them to pretension the display carrier in the direction of the stand device 4. If the action of the holding means 14 is canceled, this assist coil springs 15 to move the display support into the folded-in position.

In the Figures 1a, 1b , 2 the display carrier is shown in the display position. The display carrier 2 is largely upright compared to the stand device 4, so that when viewed from the front (see Figure 1a ) or at an angle from above the display elements 3 for the transmission of the correspondingly displayed information or advertising messages are clearly visible. In Figure 3a a side view is shown, the display carrier 2 being in the display position and this end position of the display carrier being limited by a lower stop 4a of the stand device. The angle between the display carrier 2 and the stand device 4 is selected so that the display elements 3 are clearly visible.

In Figure 3b it is shown that the display carrier 2 is transferred into a folded position in which it is largely pivoted into a parallel position with respect to the stand device 4 is. In this position, the risk of injury to an athlete from impact with the display device is greatly reduced.

When using the display device, the display support 2 is most of the time in the display position, as in the Figures 1a, 1b , 2 and 3a shown. In this position the panels 3 show information or advertising messages. For this purpose, the panels are coupled with corresponding display control units or have these integrated. Since this recording of information on electronic image displays is known and is not the subject of the invention, further description in this regard is dispensed with.

The detection device 5 supplies image information or also 3D image information of the area in front of the display device 1. For this purpose, the detection device is directed in the direction of the display effect, that is, the radiation direction of the panels 3, which in the sports area is usually the playing field. If an approach of a person is detected by the detection device 5, the control device 10 evaluates whether it is an approach that involves a potential risk of injury for the approaching person. This is particularly the case when the approach is taking place at a significant speed.

If this is the case, the control device 10 controls the drives 9 and the lockable holding means 14. The drives 9 are unlocked and the rotation of the shaft 7 takes place under drive via the belt 8. Supported by the force of the spiral springs 15, a rapid pivoting movement of the display carrier 2 together with the panels attached to it is brought about into the folded position, as in FIG Figure 3b shown. The display carrier 2 is thus moved into a position in which the risk of injury from the display device is significantly reduced. Alternatively, the control device 10 can cause a coupling (not shown) to be released so that the drive is decoupled from the display carrier and this folds into the folded position by the force of gravity and the action of the spiral springs 15.

After a predetermined period of time or in response to a control signal from the outside, the control device 10 activates the drives 9 in order to reset the display carrier 2 from the folded position (see FIG Figure 3b ) back to the display position (see Figure 3a ) to effect. For this purpose, the belts are driven in the opposite direction and the spiral springs 15 are tensioned by the movement.

In a modification of this exemplary embodiment, it can be provided that the drives are only responsible for the restoring effect, while the display carrier 2 is folded into the folded position by a physical action. For this purpose, it can be provided, for example, that the pivot connection is designed in such a way that a torque lock holds the display carrier as a holding means in the display position, but when a preset torque is exceeded, i.e. upon impact, it releases the movements in the direction of the folded position and then releases the reset via the belt 8 he follows. It can be a mechanical torque lock. Alternatively, a magnetically releasable coupling can be provided, which is released by the control device in the event of an approach and thus an impending collision being detected, so that the display carrier moves into the folded position by the action of gravity or supported by the action of the driven belts 8.

A second embodiment of the invention is shown in Figures 4a and 4b shown. A display support 20 is in turn provided with a plurality of electronic display panels 3. The display carrier 20 is coupled to the stand device 21 so as to be pivotable on one side, with pivot hinges 22 being provided between the display carrier 20 and the stand device 21 in this exemplary embodiment. In this exemplary embodiment, no controllable drive is required; instead, torsion springs 27 act as restoring means. This Torsion springs 27 urge the display support 20 into its upright display position. The exhibition is limited in the direction of the display position in particular by tension cables 26, which determine the maximum pivot angle. Gas pressure dampers 25 also act as damping elements which limit the acceleration, in particular during the return movement by the torsion springs 27.

In the display position, the tension cables 26 are tensioned, but the display carrier 20 is supported by the torsion springs 27 against movements into the folded position, that is to say towards the stand device 21. In the event of a physical impact on the display carrier 20, for example due to a collision of an athlete with the display carrier 20, the torsion springs 27 spring in and allow the display carrier 20 to move into the folded position. After surviving the collision and the associated relief of the weight of the athlete or any other load on the display carrier 20, the torsion springs 27 spring out again and bring the display carrier 20 back into the display position, this movement being regulated by the gas pressure damper 25.

the Figures 5a, 5b and 5c show different views of a further embodiment of the invention. In this configuration, a pivot connection between a display carrier 30 and a stand device 31 is again provided. In this example, a foam body 35 is used as the restoring element, which is inserted in a form-fitting manner into corresponding recesses in the stand device and is placed so that it cannot slip. Due to its wedge-shaped outer design, the foam body 35 specifies an angle of inclination at which it urges the display carrier 30 with respect to the stand device 31. If the foam body 35 is separated from the stand device 31, the folded device can be transported in a simple manner. The foam body adjusts due to its elastic resilience resilient and relieving element, which also significantly reduces the risk of injury. Finally, it is also possible to adjust the device to different restoring forces by exchanging foam bodies with different spring properties, which can also be achieved by combining several foam modules that are arranged in series. In this way, on the one hand, the angle of inclination of the display device can be influenced and, on the other hand, the restoring force with which the display carrier is pushed into its display position.

Claims (16)

Display device (1) with at least one electronic image display (3), the electronic image display (3) being arranged on a display carrier (2),
wherein the display carrier (2) is coupled to a stand device (4) which is designed to be placed on or attached to a substrate,
characterized,
that the display carrier (2) is coupled to the stand device (4) such that it can pivot on one side, the display carrier (2) being pivotable between a folded position and a display position with respect to the stand device (4),
controllable holding means (14, 8) acting between the display support (2) and the stand device (4) are arranged, which hold the display support (2) in the display position,
wherein a control device (10) is coupled to the holding means (14, 8) in order to temporarily cancel the holding effect of the holding means,
wherein the control device (10) can be coupled to a detection device (5) which detects an approach of a person to the display device (1) and wherein the control device (10) cancels the holding effect of the holding means (14, 8) depending on the detected approach . Display device according to claim 1, wherein return means (9) are arranged between the display support and the stand device, which move the display support from the direction of the folded position into the display position. Display device according to claim 1 or 2, wherein folding means (15) are arranged between the display support and the stand device, which drive or bias the display support to move in the direction of the folded position. Display device according to claim 3, wherein the folding means have a controllable folding drive which is coupled to the control device, wherein the control device controls the folding drive after activating the cancellation of the holding effect of the holding means in order to move the display carrier out of the display position in the direction of the folded position. Display device according to one of the preceding claims, wherein the detection device is arranged on the display device. The display device according to claim 5, wherein the detection device comprises an optical sensor which detects the approach of a person to the display device. Display device according to one of the preceding claims, wherein the holding means have releasable mechanical latching means which latch the display carrier in relation to the stand device in the display position. Display device according to one of Claims 2 to 7, the restoring means having at least one spring which urges the display carrier from the direction of the folded position into the display position. Display device according to one of Claims 2 to 8, the resetting means having a motorized resetting drive which moves the display carrier out of the folded position into the display position. Display device according to one of the preceding claims, wherein the control device is designed to control the holding means as a function of a detected speed of approach of a person to the display device in order to release the display carrier. Display device according to one of the preceding claims, wherein the control device has a receiving device via which control signals from an external detection device can be received, the control device canceling the holding effect of the holding means as a function of the control signals. Display device (19; 29) with at least one electronic image display (3), the electronic image display being arranged on a display support (20; 30),
wherein the display carrier (20; 30) is coupled to a stand device (21; 31) which is designed to be placed on or attached to a substrate,
characterized,
that the display carrier (20; 30) is coupled to the stand device (21; 31) such that it can pivot on one side, the display carrier (20; 30) being pivotable with respect to the stand device (21; 31) between a folded position and a display position,
wherein resetting means (27; 35) act between the display carrier (20; 30) and the stand device (21; 31) are arranged, which push the display carrier out of the folded position into the display position. Display device according to Claim 12, the restoring means (27; 35) having at least one elastically deformable first deformation element which is arranged between the display carrier and the stand device and urges the display carrier from the direction of the folded position into the display position. Display device according to claim 12, wherein the restoring means have at least one pressurized damping element which is arranged between the display carrier and the stand device and urges the display carrier from the direction of the folded position into the display position. Display device according to claim 14, wherein the damping element has a relief valve which responds when a predetermined pressure in the damping element is exceeded and reduces or cancels the restoring effect. Display device according to one of claims 14 or 15, wherein a pressure build-up device is coupled to the damping element in order to build up a predetermined restoring pressure in the damping element.

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