EP0770252A1

EP0770252A1 - Process and devices for bill-posting for large-area advertising in display panels

Info

Publication number: EP0770252A1
Application number: EP95924161A
Authority: EP
Inventors: Gerd Zollner
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-13
Filing date: 1995-06-28
Publication date: 1997-05-02
Also published as: WO1996002906A1

Abstract

The invention relates to a process for bill-posting in large-area advertising using display panels and the display units themselves, and auxiliaries usable in this context in the form of poster transport containers. In the process of the invention, the ready-made large poster is taken to the display unit in rolled-up form and held there in position, whereupon the large poster is unrolled using an unrolling mechanism and taken into the display position inside the unit. Operations are preferably conducted in such a way that, when the poster is changed, the large poster to be removed from the unit is rolled up by means of a rolling mechanism and removed as a roll. In a preferred embodiment, the rolled poster is taken to a transport cassette in the display unit and positioned, whereupon it is unrolled from the transport cassette and put into the display position.

Description

Methods and devices for carrying out the plaka work in large-area advertising by means of poster showcases

The invention relates to a method for carrying out poster work in poster display cases for large-area advertising. Furthermore, the invention is directed to poster showcases for large-area advertising and aids which can be used in this context in the form of poster transport containers.

For large-area advertising, billboards are used, most of which are set up outdoors or attached to building walls and attached to them. the large posters, the edge dimensions of which are generally at least 2.5 mx 3.5 m, are posted using a water-soluble paste. The large posters used in large-area advertising are composed of individual poster sheets, the paper poster sheets being mutually overlapped in several rows arranged one above the other to form the large poster. The disadvantages of this poster technology, which works with full-area wet bonding, are known and need not be mentioned.

It is also known to use poster showcases for large-area advertising, which are provided with a transparent protective pane which is held in a pane frame and covers the large poster on the visible side, and which is mounted on the showcase housing in an upper pivot bearing in order to open the poster showcase (DE-OS 42 38 014). In the case of this poster showcase, the poster sheets are detachably and easily exchangeably connected in the poster showcase to the poster carrier without full-area gluing.

In the case of large-area advertising, the poster posting and the poster change require a considerable amount of work and time, especially since these poster jobs often have to be carried out outdoors and often under unfavorable weather conditions, which often leads to poster damage. The object of the invention is to provide methods with which the poster work can be made considerably easier and can be carried out more quickly, especially when the poster showcases are outdoors and therefore the poster work is often carried out under bad weather conditions. like especially wind and / or rain. Furthermore, the invention is directed to improved poster showcases and auxiliary devices with which the poster work can be carried out in the large-area advertising with considerably less work and time.

The above-mentioned object is achieved with the method according to the invention in that the prefabricated large poster is wound up into a poster roll and is fed to the poster showcase and positioned, after which the large poster is unwound from the poster roll with the aid of an unwinding mechanism and into the viewing position within the poster vi ¬ trine is brought. The method is preferably further developed so that when the poster is changed, the large poster to be removed from the poster showcase is wound up into a poster roll by means of a roll-up mechanism, so that it can be removed from the poster showcase or removed from the poster showcase as a poster roll.

The invention is based on the consideration that, in the case of large posters, the poster does not have to be made by individually attaching the poster sheets in the poster display case, but rather the large poster is introduced into the poster display case in a prefabricated form. The process according to the invention is carried out in such a way that the large poster, which is prefabricated outside the poster showcase, is wound up into a poster roll and fed to the poster showcase, positioned here and then brought from the poster roll to the spread out position in which it is viewed the visible side of the poster showcase is fully visible from the outside. The unwinding of the large poster is carried out by means of a unwinding mechanism which is arranged in the poster showcase and which consists, for example, of a simple poster lift which can be driven by hand or by motor. In order to facilitate the poster work also when changing the poster, as mentioned, the large poster to be taken from the poster showcase can first be wound up into a poster roll by means of a roll-up mechanism, whereupon the poster roll is removed from the poster showcase or removed from the poster showcase. The reeling mechanism can also be done by hand or be operated by a motor. With these procedural measures, the poster work is considerably facilitated and accelerated and poster damage can also be avoided when the large posters composed of poster sheets are introduced into the poster showcases.

The method according to the invention can be carried out with particular advantage in such a way that the large poster, rolled up on a winding rod to form a poster roll, is introduced into the poster display case and is brought into the viewing position within the poster display case while unwinding from the winding rod, and that this is done when the poster is removed Large poster in the poster showcase is rewound to the poster roll by means of the roll-up mechanism before it is removed from the poster showcase. Since in this mode of operation the large poster to be inserted into the poster showcase does not need to be unprotected from the poster roll outside the poster showcase, damage to the poster, in particular due to weather conditions, is also reliably excluded. Since, on the other hand, when the poster is changed, the old poster is rolled up again with the aid of the roll-up mechanism, it can be removed from the poster showcase as a poster roll when it is cleanly rolled up. It is also possible to reuse the large poster removed from the display case, e.g. in another poster showcase.

According to a further essential design feature of the invention, the poster roll is fed to the poster display case in a transport container, here referred to as a transport cassette, and positioned so that the large poster can be unwound from the transport cassette into the viewing position with the aid of the unwinding mechanism. The method of operation can also advantageously be carried out in such a way that when the poster is changed, the large poster to be removed from the poster showcase is rewound into the transport cassette, so that it can be removed as a protected poster roll in the transport cassette. The transport cassette serves not only for the transport of the finished large poster, which is wound up to the piaco roll, in the sense of a transport and protective container, but also as an auxiliary device which interacts with the unwinding mechanism of the poster showcase, the transport cassette also advantageously for rewinding the large poster kats can be used when changing the poster, ie as a roll-up mechanism. The transport cassette equipped with the poster roll can either brought into the poster showcase with the protective pane pivoted out, or preferably introduced into the showcase through a separate insertion opening on the poster showcase. With the use of the transport cassette, there is also considerable work relief when carrying out the poster work, especially since the large poster to be inserted into the poster display case can be inserted into the poster display case without additional repacking and unpacking. The poster is protected as well as possible against mechanical damage and damage caused by weather rivers. If the transport cassette, as preferably provided, also forms the roll-up mechanism for the poster, the arrangement can advantageously be made such that it is provided with a winding rod mounted in a pivot bearing which can be rotated in the roll-up direction of the poster.

For the winding up of the large poster into the viewing position within the poster showcase and possibly also for the rewinding of the poster to the poster roll when changing the poster, the poster roll or, if the aforementioned transport cassette is used, it is positioned in the prescribed position on or in the poster showcase and held what by means of a suitable connection device, ie egg pia roll holder can happen.

In the following, some further advantageous design features of the invention are explained.

The insertion of the poster roll into the unwinding position within the poster showcase can take place with the poster showcase open, ie with the protective pane of the poster showcase pivoted out into the open position. According to a further essential design feature of the invention, however, the poster showcase is provided with a separate poster roll guide opening through which the poster roll, which may be located in the transport cassette, can be inserted into the poster showcase or into its insertion space with the protective pane in the closed position is. This means that the large poster does not have to be opened over a large area by swiveling out the protective pane in order to insert the large poster, which is particularly problematic when carrying out the poster work outdoors under unfavorable weather conditions. The above-mentioned insertion opening, which is expedient by means of a flap or other closure element is closable, it can have comparatively small dimensions. For example, the insertion opening can be located on the side wall of the display case. In this case, an insertion opening is preferably provided on each of the two opposite vertical side walls of the display case, so that the poster roll can optionally be inserted into the display case from one side or the other. On the other hand, the insertion opening can also be arranged at the front on the bottom of the display case, for example in such a way that it extends across the width of the poster display case and the poster roll is accordingly introduced into the poster display case or its insertion space transversely to its longitudinal direction. can. It goes without saying that when changing the poster, the large poster to be replaced can also be removed from the poster display case via the said insertion opening after it has been rewound to the poster roll using the roll-up mechanism.

In a further advantageous embodiment of the invention, the arrangement is such that the aforementioned roll-up mechanism and / or the unwinding mechanism can be seen from the outside of the plaque, e.g. can be actuated by means of a simple manual drive or else an electric drive, without the protective pane of the poster showcase having to be brought into the open position for this purpose. In connection with the above-mentioned insertion opening there is the essential advantage that all poster work when inserting and changing the poster can be carried out from the outside without opening the large Schut :: disc.

As mentioned, a suitable unwinding mechanism is used for the unwinding of the large poster in the poster display case, which can expediently be actuated from the outside of the poster display case without opening the protective pane. This unwinding mechanism can consist, for example, of a poster elevator, which can be designed in the manner of a simple cable rope elevator, a roller blind, a blind or in the manner of an articulated arm awning, which of course is arranged in the poster window such that vertical lifting movement is coming. A poster elevator can advantageously be used, which consists of or arranged in the side areas of the poster showcase, from the lower to the upper showcase area and via deflection rollers or the like. running flexible drawstring elements with an associated driver device for the large poster, the parallel drawstring elements are preferably endless and expediently consist of endless chains. Such chain belts guided over toothed rollers enable an exact working movement when the large poster is raised into the viewing position and, moreover, enable the two parallel chain bands to be synchronized during the working movements. The poster lift can be operated effortlessly, for example by hand, although a small electric drive can also be used, which can be switched on and off from a favorable working position.

The large-format posters with a rectangular format usually have different width and height dimensions. It is advisable to feed the large, rectangular poster wrapped around its narrow side to the poster roll to the display case and to unwind it around a winding axis running in the direction of its narrow side into the viewing position behind the protective pane. This process measure results in significantly smaller length dimensions of the poster rolls, which offers advantages for their transport to the poster display case and for the poster work to be carried out. If the poster roll, which is recommended, is accommodated in a transport cassette, correspondingly smaller length dimensions and smaller transport and handling weights result for the transport cassette. In this preferred procedural measure, the above-mentioned insertion opening for the poster roll is expediently arranged on one of the two vertical side walls or else on both side walls of the display case.

Via the insertion opening, the poster roll, possibly together with the transport cassette receiving it, can be positioned on or in the display case in such a way that the poster or its end is in the access area of the unwinding mechanism, so that the actuation thereof Poster captured at its end and being pulled from the poster roll in the poster showcase into the spread out viewing position.

In general, the width of a poster showcase is considerably larger than its height, depending on the poster format used. In this case, the method according to the invention can be used in such a way that the large poster or the poster roll is introduced from below or from the side into the poster showcase and then unwound in the poster showcase by means of the unwinding mechanism about the upright winding axis of the poster roll in the lateral direction of the poster showcase becomes. In this way of working, the unwinding mechanism does not consist of a poster elevator, but rather of a transport mechanism pulling the poster from the poster roll in the horizontal or lateral direction of the poster showcase. Different devices can also be used for this transport mechanism, with a special distribution, an unwinding mechanism which is equipped with at least one drive element which interacts with an edge perforation of the large poster, e.g. a toothed or cam belt or the like. is provided in order to pull the large poster from the poster roll into the viewing position within the poster cabinet while unwinding.

A common unwinding and rewinding mechanism can also be provided for unwinding the poster from the poster roll and for winding up the poster to the poster roll, namely a winding device used to wind up and unwind the poster, which is also useful in this case is assigned to a transport cassette for the poster roll, but can also be arranged on the slide roll holder, in which the plaque roll can then be inserted without a transport cassette with a winding shaft. In this case, the poster roll, expediently inserted in the transport cassette, is arranged horizontally in the poster roll holder, which is located in the head space of the poster showcase or above, the poster roll holder or the transport cassette having the unwinding mechanism and the winding mechanism at the same time is provided for the winding shaft rotary drive forming the poster. With this method of working, the poster in the poster showcase is removed from the top down Unrolled poster roll in the viewing position behind the protective screen.

Further advantageous design features of the method according to the invention, the poster showcases according to the invention and the transport cassettes preferably used here are specified in the individual claims and also result from the following description of the exemplary embodiments shown in the drawing.

The drawing shows:

Fig. 1 a poster showcase according to the invention for the

Large area advertising in schematic simplification in a front view, i.e. looking towards the large poster in the viewing position;

Fig. 2 u. 3 each a poster showcase according to the invention in vertical section in the partially open state (FIG. 2) and in the closed state of the protective pane (FIG. 3);

Fig. 4, the poster showcase according to FIGS. 2 and 3 in

Vertical section and in a view from its rear according to the arrow V of Fig. 3;

5 shows a front view of the large poster that can be used in the poster showcase according to FIGS. 1 to 4 and is unwound from the poster roll;

FIG. 6 shows the large poster shown in FIG. 5, wound up to form a poster roll, in cross-section, a transport cassette being indicated by dashed lines at the same time;

Fig. 7 shows a poster showcase according to the invention in a schematic perspective representation together with a transport cassette according to the invention;

8 is a partial view of the unwinding mechanism used in the poster showcase according to FIG. 7 together with the transport cassette in a view in the direction of arrow VIII of FIG. 9;

9 shows the arrangement according to FIG. 8 in a view in the direction of arrow IX of FIG. 8;

10 shows a vertical section through the poster showcase according to FIG. 7, the transport cassette in its position inside the poster showcase before unwinding and raising the large poster;

FIG. 11 shows the large poster unwound from the roll and raised into the viewing position; clamped between the protective screen and a rear wall;

12 shows a further, preferred embodiment of a poster showcase according to the invention in a schematic simplification and in a perspective view obliquely from bottom to top in the direction of the visible side of the poster showcase together with a roll of posters to be inserted into the poster showcase located in a transport cassette;

13 likewise in a schematic simplification and in a perspective view an unwinding mechanism according to the invention, as can advantageously be used in the poster showcase according to FIG. 12, together with the assigned poster roll and transport cassette;

Fig. 14 in a schematic simplification a modified Embodiment of an unwinding mechanism which can be used in the poster showcase according to FIG. 12;

15 shows the poster showcase according to FIG. 12 in a horizontal section, schematically simplified, to show the unwinding mechanism;

16 shows the unwinding mechanism according to FIG. 15 in one

Vertical section through the poster showcase, approximately in the section along line XVI-XVI of Fig. 15;

17 shows a transport cassette according to the invention (without inserted poster roll) in a partial longitudinal section;

18 the cross section of the transport cassette according to FIG. 17 with the inserted poster roll;

19 shows, in a greatly schematic simplification and in a partial view on its visible side, a poster display case according to the invention with an unwinder mechanism designed and arranged according to the invention and a roll-up mechanism for the poster.

The poster showcases 1 shown in the drawing for large-area advertising have a display case 2 which is rectangular in outline with the rear wall 3 (FIGS. 2 and 3) and the peripheral wall which extend from the bottom wall 4, the horizontal top wall 4 'parallel thereto. and the two mutually parallel vertical side walls 4 ″ of the display case is formed.

As is only shown in FIG. 1, legs 5 can be arranged on the display case 2, which serve to set up the poster display case 1. The legs 5 can be omitted if the poster showcase 1 is connected to a building wall, for example. The flat, rectangular display case 2 can be closed at the front by means of a transparent protective pane 6, which is enclosed and held in a rectangular pane frame 7 At the top of the poster showcase 1, the protective pane 6 with its pane frame 7 is pivotally mounted in a horizontal pivot bearing 8 on the display case 2 or its head wall 4 ', so that the protective pane 6 with its pane frame 7 differs from that shown in FIG. 3 2 and, if necessary, can be pivoted upwards and vice versa beyond this opening position, and can be fixed in the closed position on the display case 2 by a locking device (not shown). If required, the protective pane 6 can also be fixed in its open position, for example by means of one or more gas pressure springs which are arranged between the pane frame 7 and the display case 2 and are known for this purpose.

1 shows, as an exemplary embodiment, a large poster 9 which is introduced into the poster showcase 1 and is in the viewing position and which here is composed of eight poster sheets 10 in two rows one above the other. It is understood that the number of placard sheets 10 from which the large poster 9 is composed can be different. 5 shows, in an exemplary embodiment, the large poster 9 in a view of its visible surface outside the poster display case. It can be seen that the poster sheets 10, as is known, overlap at their adjacent horizontal and vertical edges. In these overlap zones 11, the poster sheets 10 are connected to one another to form the large poster 9. As the hatched areas 12 show, this can be done by gluing the poster sheets in the overlap zones 11, or preferably by gluing points, as indicated in the areas 13. Instead of gluing the poster sheets 10, they can also be connected with the aid of adhesive strips.

The connection of the poster sheets 10 to the large poster 9 can already take place in the printing shop, in which the poster sheets 10 made of paper are printed with the poster motifs. It is important that the large poster 9 is not assembled from the poster sheets in the poster display cabinet, but rather outside the poster display cabinet, so that the prefabricated one Large poster rolled up to a roll of posters can be transported to the display case and brought in here.

5 shows an exemplary embodiment of the large poster 9 in connection with rods connected to its upper and lower horizontal poster edge, of which the upper rod is a so-called coupling rod 14 for the coupling of the large poster with an unwinding mechanism designed as a poster elevator and our rod forms a so-called connecting rod 15, which can also be a winding rod (winding axis) with which the poster sleeve can be connected in the insertion space of the poster display case 1, as will be explained in more detail below. The two rods 14 and 15 expediently consist of round rods and advantageously of tubes. The two bars 14 and 15 can be connected to the relevant edges of the large poster 9 by gluing, e.g. in that the edges of the large poster 9 in the form of a roller 16 are placed around the bars 14 and 15, as shown in FIG. 6, the finished large poster 9 can be wound up together with the rods 14 and 15 connected to its parallel edges to form a poster roll 17, in the exemplary embodiment shown around the lower connecting rod 15, so that the upper coupling rod 14 is on the outside of the roll located. The poster roll 17 formed in this way can then be inserted into the slide showcase 1, in the exemplary embodiment according to FIGS. 2 to 4 into an insertion space 18 in the floor area of the poster showcase.

The poster showcase 1 shown in FIGS. 1 to 4 has, as a poster carrier, an unwinding mechanism designed as a poster winder, with the aid of which the large poster 9 introduced as poster roll 17 in the poster showcase 1 from the lower poster roll insertion position in FIG The insertion space 18 can be raised to its upper viewing position (FIGS. 1 and 3) behind the protective pane 6 and, when changing the poster, lowered again for removal from the poster cabinet. As shown in FIGS. 2 to 4, the unwinding mechanism 19 consists of two parallel flexible drawstring elements arranged in the two side areas of the poster showcase 1 in its showcase housing 2 in the form of Endless chains 20, which each extend approximately over the height of the poster showcase and are each deflected at the upper and lower deflecting ends via a toothed wheel or a toothed roller 21, the upper toothed rollers 21 each being freely rotatably mounted on a roller holder 22 which is arranged on the inside on the relevant side wall 4 ″ of the display case 2. The lower toothed rollers 21 of the two endless tooth chains

20 are arranged on a common shaft 23 which is mounted in shaft bearings 24 in the display case 2 and extends essentially over the entire width of the display case 2, as shown in FIG. 4. The unwinding mechanism 19 is arranged with its two vertical chain bands 20 in the display case 2 so that the upper and lower sprockets

21 are concealed behind the vertical frame parts of the pane frame 1, while the continuous shaft 23 with the toothed rollers 21 mounted on its trowel ends is concealed behind the lower horizontal frame part of the pane frame 7.

E.g. If one of the two endless chains 20 is pulled down by hand, the shaft 23 is rotated by the tooth engagement of its lower toothed roller 21 and the other chain 20 is taken along by it. Accordingly, the two chains 20 can be operated synchronously by rotating the shaft 23. As shown in FIG. 4, in the middle area of the shaft 23 there is a handle 25, with which the shaft 23 can be moved directly by hand or using a turning tool, e.g. a hand crank, can rotate to drive the two chains 20 synchronously. Depending on the direction of rotation of the shaft 23, the chains 20 can be moved with one chain center upwards and with their other chain center downwards.

As shown in FIGS. 2 to 4, a rectangular rear wall 26 is arranged in the display case 2, which serves to support and support the large poster 9 in its viewing position and, moreover, one the large poster 9 against the closed one Protective disk 6 pressing device forms. For this purpose, the rear wall 26 is adjustable in the direction of the protective pane 6 and in the opposite direction in the display case housing 2 stored. In the exemplary embodiment shown, the rear wall 26 is connected at its two opposite vertical sides to two link levers 27, the upper link levers 27 in the joint 28 at the upper end of the rear wall 26 and at their lower end in the joint 29 to an articulated bearing part 30 of the display case are connected, while the lower control levers 27 are connected at their lower ends in joints 29 to articulated bearing parts 30 of the display case 2 and are connected at their upper ends in joints 28 to the rear wall 26. Fig. 2 shows that in the open position of the protective plate 6, the rear wall 26 is in a vertical reset position in the display case 2 in an approximately vertical pivoting position of the handlebar lever 27, and that when the protective plate 6 is closed according to FIG. that the rear wall 26 is at a close distance from the protective pane 6 and therefore holds the large poster 9 in contact with the inside 6 of the protective pane 6. In this swivel position, the handlebar levers 27 are slightly inclined so that the rear wall 26 is held in the poster pressure position by the force of gravity. When the protective screen 6 is open, the rear wall 26 can be pivoted back into the position according to FIG. 2, so that there is sufficient space for the large poster 9 to be raised by means of the unwinding mechanism 19. The pivoting movement of the rear wall 26 can also advantageously take place from the outside of the poster showcase 1, for example by virtue of the fact that the lower joint 29 of the lower control arm 27 is designed as a rotary shaft on the shaft end 29 '(FIGS. 10 and 11) of which a turning tool can be placed on the outside in order to pivot the handlebar levers 27 between the pressure position according to FIG. 11 and the reset position according to FIG. 10 and vice versa.

Instead of the described pressure device with adjustable rear wall 26, an adjustable pressure device in the form of a simple pressure frame, pressure grid, a pressure linkage or the like can also be used. can be provided, which can be adjusted, for example, by means of a handlebar guide in the direction of the protective screen 6 and in the opposite direction in the display case. Instead of the handlebar lever arrangement can be used for the adjustment of the Pressure device or the rear wall but also a simple parallel or linear guide can be provided. It is particularly important that the large poster 9 can be pressed against the protective pane 6 in the closed poster showcase 1 and that the pressing device for inserting or changing the large poster 9 can be reset from the protective pane 6 into the interior of the showcase housing 2 to get enough space to operate the elevator. If the poster display case is designed as a light display case, the pressure device should be designed so that the display case space behind the pressure device or the rear wall 26 is accessible, since a light source, for example in the form of several fluorescent tubes, is located in this display case space. The rear wall 26 can consist of a light scattering film which is clamped and held in a rectangular frame. The light penetrating the light scattering film falls on the back of the large poster 9, through which this is completely illuminated.

With the poster showcase described above, the poster work is carried out as follows:

The large poster 9 which is assembled outside the poster showcase 1 and wound up to form the poster roll 17 according to FIG. 6, is inserted from below into the insertion space 18 of the poster showcase in the form of the poster roll 17 when the protective pane 6 (FIG. 2) is pivoted out slightly, the poster roll 17 is positioned in the insertion space 18 in alignment and in access to the unwinding mechanism 19. Fiq.4 in particular shows that the at the

Poster roller 17 outer coupling rod 14 has such a length that it protrudes laterally with its two rod ends 14 'into the area of the chain hoists 20 from the poster roller 17 and therefore overlaps drivers 31 on the endless chains 20 with its rod ends 14'. The somewhat shorter lower connecting rod 15, which forms a winding axis for winding up the large poster 9, is held with its two rod ends 15 'protruding from the poster roll 17 in rod holders 32, which are in the lower area in the insertion space 18 in the Vi¬ Trinengehäuse 2 are fixed and which form a poster holder. The poster roll is in the rod holders 32 17 positioned in alignment with the unwinding mechanism 17. If one of the two endless chains 20 is now pulled downwards by hand or the shaft 23 on the handle 25 is rotated so that the carriers 31 attached to the chains 20 run upwards, the coupling rod 14 becomes 14 at its ends 'raised by the drivers 31 and in the process the large poster 9 is unrolled from the connecting rod 15, which is held with its rod ends 15' against upward movement in the rod holders 32 in a bar. The large poster 9 can therefore be unwound from the poster roll 17 with the aid of the unwinding mechanism 19 and raised to the viewing position. This situation is shown in FIG. 3, where the coupling rod 14 with its rod ends 14 ′ resting on the drivers 31 is in the upper position in the immediate vicinity of the upper horizontal frame part of the window frame 7. After the large poster 9 has been raised into the viewing position, the poster display case can be closed by pivoting its protective pane 6 back into the closed position according to FIG. 3. Here, the rear wall 26 is adjusted as a pressure device in the direction of the closed protective pane 6, so that it holds the large poster 9 in contact with the closed protective pane 6.

In order to subsequently remove the large poster 9 from the poster display case, the poster 9 is lowered again in the display case by means of the unwinding mechanism 19, in that the chains 20 are actuated in such a way that their drivers 31 with the coupling rod 14 lying thereon move down in the display case. The large poster 9 can then be rewound onto the lower connecting rod 15 to form the poster roll by rotating the connecting rod 15 as a winding rod in its rod holders 32 about its axis. This is advantageously done in such a way that when the large poster 9 is lowered with the aid of the unwinding mechanism 19, the large poster is rolled onto the connecting rod 15 to the extent that it is lowered with the downward coupling rod 14, so that when the large poster 9 is completely lowered this is rolled up cleanly on the connecting rod 15. For this purpose a Aufrollmecha¬ mechanism for rewinding the large poster 9 within the display case 1 in association with the connecting rod 15 with a simple hand-operated or motor-operated rotary drive for the connecting rod 15 is provided. The connecting rod 15, which is rotatably mounted in the rod holder 32 forming a pivot bearing, can be opened with the protective pane 6 (FIG. 2) together with the unwinding mechanism 19 or from the outside of the closed display case 1, that is to say with the protective pane 6 in the closed position (FIG. 3) are operated. In the latter case, in the lower side area of the poster cabinet 1, ie in the lower area of the side wall 4 ″ or both side walls 4 ″ in an axial extension of the connecting rod 15 mounted in the rod holders 32 and the shaft 23, an actuating opening be provided, through which a rotary drive expediently designed as a hand-held device, for example in the form of a simple key, a crank or a battery-operated hand-held device, is plugged onto the end 15 ′ of the connecting rod 15, which is designed as a polygon, and the end of the shaft 23 from the outside, in order to rotate the connecting rod 15 "together with the shaft 23 for rewinding the large poster 9. The large poster 9 can thus be fully rolled up onto the connecting rod 15 when the poster is changed, the coupling rod 14 being synchronized with the roll-up operation by means of the unwinding mechanism 19 After rolling up the large poster onto the lower connecting rod 15, the Poster showcase by swiveling the protective pane 6 (Fig. 2) are opened in order to remove the poster roll 17 with the two rods 14 and 15 from the poster vitrir.e 1.

7 to 11, the poster showcase described in connection with FIGS. 2-4 is reproduced as an advantageous exemplary embodiment for the case that the large poster 9 wound up, for example according to FIG. 6, into the poster roll 17, inserted into a transponder cassette 40, without Opening the protective pane 6 is introduced from the outside into the poster display case 1 or its insertion space 18. The transport cassette 40 consists of an elongated housing made of plastic, light metal or another material, the length of which corresponds approximately to the width of the large poster 9. On its upper side, that is to say on its jacket, the transport cassette 40 has an opening 41 which is continuous over its housing length and into which the poster roll 17 enters from above Transpcrtkassette can be inserted. On the opposite end walls 42, the transport cassette 40 has recesses 42 'which are open at the top and rounded at the bottom for receiving and depositing the coupling rod 14 or its rod ends 14' protruding from the poster roller and the transport cassette on both sides . The connecting rod 15 forming a winding axis lies in a rod pivot bearing 43 in the interior of the transport cassette 40 and its ends need not necessarily be led out through the end walls 42. The rod pivot bearing 43, in which the connecting rod is rotatably mounted about its rod axis, is only indicated schematically in FIG. 8. In a departure from the illustration, it is expediently designed such that when the poster roll 17 is inserted into the transport cassette 40, the connecting rod 15 can be inserted into the open pivot bearing 43, preferably in such a way that the connecting rod 15 has its two ends in rod openings 44 is rotatably mounted on the end walls 42 of the transport cassette 40. Here, the transport cassette 40 can also be made telescopically extendable, so that the poster roll 17 can be inserted from above through the insertion opening 41 into the somewhat exploded housing of the transport cassette 40, whereupon the latter is telescopically pushed together so far that the connecting rod 15 with their ends 15 'into the rod openings 44. The telescopic design of the transport cassette 40 also enables it to be adapted to different poster widths. On the other hand, the pivot bearing 43 for the connecting rod 15 can also be formed by providing inwardly projecting bearing pins on the end walls 42 which engage in the hollow connecting rod 15 or into which the connecting rod 15 can be inserted with its ends 15 ' , wherein at least one of the two journals on the associated end wall 42 for opening the pivot bearing is displaceable in the direction of the longitudinal axis of the connecting rod 15. Irrespective of the design of the rod pivot bearing 43, it is advisable to provide the housing opening 44 at least on one end wall 42 or preferably on both end walls 42 in the axial direction in front of the relevant rod end 15 'of the connecting rod 15, this in or inside the front of the housing opening 44 end of the connecting rod 15 is expedient as a polygon 15 ″ is formed, to which a turning tool can be inserted from the outside in order to turn the connecting rod 15 in its pivot bearing for rolling up the large poster 9 (FIG. 9) Multi-winged pendulum flap 45 or another removable cover can be closed in order to protect the poster roll 17 located in the transport cassette 40 on the way to the display case 1. The housing opening 41 also serves to carry out the poster when unwinding from the poster roll 17 and when winding it up to the poster roll 17.

8 and 9 show the two endless chains 20 of the unwinding mechanism designed as a poster elevator, already described in connection with FIGS. 2-4, in the area of their lower deflection or toothed rollers 21 and the hook-like drivers 31. FIG. 9 also reveals that on the outside of the housing of the transport cassette 40 there are connection elements 46, with the aid of which the transport cassette 40 introduced from below into the insertion space 18 of the poster display case 1 can be secured against lifting off in the poster roll holder, which in this case holds a holder for the forms the transport cassette 40 receiving the poster roll. In the exemplary embodiment shown, the connection elements 46 consist of connection and guide hooks pointing upwards and downwards, which can extend over the entire length of the transport cassette 40. From FIGS. 8 and 9 it can be seen that when the transport cassette 40 is locked on the connecting elements 46 to prevent it from being lifted off, the coupling rod 14 is lifted up out of the transport cassette 40 by unrolling the large poster 9 from the poster roll 17 when the two chain bands 20 are synchronized in the direction of the arrow S are moved so that their drivers 31 reach under the rod ends 14 'and thus lift the coupling rod 14 out of the recesses 42' of the transport cassette 40. During the upward movement of the coupling rod 14 with the aid of the unwinding mechanism 19, the large poster 9 therefore rolls off the connecting rod 15 which is rotatably mounted in the transport cassette 40 until finally the drivers 31 and thus the coupling rod 14 are in the upper region of the poster display case and thus the large poster 9 is completely settled. The large poster 9 is located then in the viewing position. To tighten the unwound large poster 9, the connecting rod 15 can be rotated about its axis with the aid of a tool plugged onto its rod end 15 ″ and secured in the rotational position.

7 shows the transport cassette 40 with the inserted poster roll 17 outside the poster display case 1. The latter has in the lower area on the vertical side wall 4 ″ of the display case 2 an insertion opening 50 for the transport cassette 40 which is adapted in size the transport cassette 40, this insertion opening 50 being closable by a pivoting flap 51 or another cover element. It is advisable to provide such an insertion opening 5Z on each of the two opposite vertical side walls 4 ″ of the display case 2. When the insertion opening 50 is open, the transport cassette 40 with the poster roller 17 lying therein in the rod pivot bearing can be inserted in its longitudinal direction, ie in the direction of the arrow R through the insertion opening 50 in the bottom area of the display case into its insertion space 18. Here, the connecting and guiding elements 46 of the transponder cassette 40 slide behind a guide bar 52, which is fixedly arranged on the inside of the display case 2 in the base area and determines the insertion position of the transport cassette, ie aligns and holds the transport cassette in the access for the unwinding mechanism 19. The guide bar 52 thus forms a poster roll holder, which holds the transport cassette 40 and thus the poster roll 17 located therein in an aligned position during the up and down process. After the transport cassette 40 has been inserted into the poster display case 1, the protective pane 6 of which can be in the closed position (FIGS. 7 to 11), the unwinding mechanism 19 is actuated, expediently by rotating the shaft 23. For this purpose, the shaft can 23, at least on its one shaft end, which is located in the area of the insertion opening 50, be designed as a polygon 23 '(FIG. "), On which a turning tool, for example a hand crank, a turning key, or a battery-operated one, is located through the insertion opening 5 Handheld rotary device or the like can be set in order to turn the shaft 23 from the outside of the poster display case 1. When the shaft 23 is rotated, the Zahnrolien 21 put the two endless transport chains 20 in circulation, so that their drivers 31 in the direction of arrow S (Fig. 9) run up and thus take the coupling rod 14 by attacking the rod ends 14 ', whereby the large poster of the in the transport cassette 40th from the existing poster roll and is pulled up into the viewing position. The transponder cassette 40 is in this case held against the upward movement by the hook-shaped connecting elements 46 which reach behind the guide strip 52. After the large poster 9 has been raised into the viewing position, as described, the rear wall 26 or another pressure device, for example, can be set against the rear of the large poster from the insertion opening 50, for example via the handlebar lever guide described, so that the poster Back wall 26 or the pressure device is pressed against the protective pane 6.

When changing the poster, the large poster 9, as described above, is lowered with the help of the unwinding mechanism 19 or its transport chains 20 in the closed poster showcase 1, which can be done by the shaft end 23 'lying in the area of the housing opening 50 being A rotary tool is attached to the shaft 23 from the outside in order to confirm the shaft and thus the transport chains accordingly. Expediently in synchronism with the lowering movement of the large poster, it is rolled up onto the connecting rod 15, which for this purpose is rotated from the outside as a winding rod. The rotary movement of the connecting rod 15 can also take place through the housing opening 50 from the outside of the poster display case by attaching a rotary tool to the rod end 15 ″. After the large piakate 9 has been completely lowered, it is rolled up cleanly on the connecting rod 15 in the interior of the transport cassette 40, which can then be removed from the closed display case 1 via the lateral insertion opening 50 in the opposite direction of the arrow R.

It can be seen that when the transport cassette 40 is used, the prefabricated large poster 9 inserted as a poster roll 17 in the transport cassette 40 is completely protected during poster work and does not need to be grasped by hand. 10 shows the transport cassette 40 inserted through the lateral insertion opening 50 in its longitudinal direction into the poster showcase 1 with its housing lock in the bottom region of the showcase housing 2, the rear wall 26 being separated from the protective disk 6 which is in the closed position by the handlebar lever mechanism described is pivoted back so that the large poster can then be raised to the viewing position with the aid of the unwinding mechanism 19. 11 shows the large poster 9 which has been raised into the viewing position. By pivoting the rear wall 26 over the handlebar lever gear, it is pressed against the protective disk 6. 10 and 11 it can be seen that the lower control arm joint 29 in the region of the insertion opening 50 has a pivot pin or a rotary shaft as the articulation axis, the end 29 'of which forms an expediently designed polygonal actuating end to which a turning tool can be attached from the outside with the help of which the pressure device or the back wall 26 forming it can be adjusted between the reset position according to FIG. 10 and the pressure position according to FIG. 11.

In the. The embodiment described above can thus be carried out when placing the large poster in the poster display case and when changing the poster from the outside of the poster display case without the protective pane 6 having to be brought into the open position.

Instead of inserting the transport cassette 40 in its longitudinal direction (arrow R) through the lateral insertion opening 50, another insertion opening can also be provided on the poster showcase or its display case housing 2. 7 shows the lower horizontal bottom surface 4 of the display case 2, which can be folded down to form the insertion opening 50, so that the transport cassette 40 equipped with the poster roll is transverse to its longitudinal direction, ie in the direction of the arrow R 'from below can be introduced into the poster showcase, in the correct position with respect to the unwinding mechanism, so that when it is actuated, the large poster from the poster roll in the transport cassette 40, as described in FIG. written and can be raised to the viewing position.

If the preferably provided option of inserting the transport cassette 40 equipped with the poster roll from the outside into the poster display case with the protective disk 6 closed is avoided, it is also possible to work in such a way that the transport cassette 40 with the protective disk 6 swung out in the correct position in relation to the poster elevator Poster showcase is introduced. It is apparent that the use of an insertable into the poster display transport cassette 40 that remains for the duration of poster advertising in the poster display that Plakatarbei¬ th considerably easier and especially accelerated: be an _d that we have a virtually complete protection of large poster against Damage is present, especially since the poster roll at the location of the poster showcase does not have to be removed from the transport cassette and then transferred to the poster showcase.

It goes without saying that instead of the unwinding mechanism formed by transport chains and described in connection with FIGS. 2-4 and 7-11, other devices operating in the manner of a poster elevator can also be used. Instead of the preferably provided chain straps 20, e.g. also endless belt or rope elements, belts or the like running around deflection rollers. be provided. The unwinding mechanism can also consist of one or more simple, non-endless flexible lifting ropes or other flexible pulling elements, which only need to be deflected via a deflection in the upper area of the poster showcase. Instead of manual actuation of the poster elevator, motorized actuation of the same can also be provided.

12 to 18 show a preferred embodiment of a poster showcase according to the invention together with its individual components. 12 shows that the poster showcase has a width B which is considerably greater than its height H. The poster showcase is therefore intended for a large poster 9 with a rectangular format, the width of which is correspondingly greater than its height. Deviating from the above described For example, here the large poster 9 is wound around its narrow side, which in this case is determined by the height dimension H, to form the poster roll 17. Accordingly, the transport cassette 40 only needs to have a length here which is not substantially greater than the smaller dimension H of the poster. Instead of an unwinding mechanism working as a poster elevator, an unwinding mechanism that unwinds the poster in the horizontal direction according to arrow Z is used for this.

FIGS. 12-18 show the transport cassette 40 in a preferred embodiment, which is here essentially cylindrical and has a narrow slot passage 41 'on its peripheral side as the housing opening, the large poster 9 wound up to form the poster roll 17 with its End 9 '(FIG. 12) passes through the slot passage 41' on the casing of the transport cassette. In the interior of the transport cassette 40, which is designed as a simple slotted tube 40 'and is shown primarily in FIGS. 17 and 18, there is the winding axis 15 which forms a tubular winding shaft and which is rotatably mounted at its two opposite ends in a closure piece 48. The slit tube 40 'of the transport cassette is expediently made from a light material, for example from plastic or cardboard or the like. The closure pieces 48, which are expediently made of plastic, consist of pot-shaped push-on caps which can be pushed onto the ends of the slotted tube 40 'of the transport cassette 40, expediently with clamping. The closure pieces 48 have axially inwardly directed hollow pins 49 (FIG. 17) which engage in the hollow winding axis 15, which is why the latter is rotatably mounted in the transport cassette 40 about its longitudinal axis. The rotary drive of the winding axis 15 takes place from the outside of the transport cassette 40 by means of a turning tool, not shown, which is inserted through one of the two hollow pins 49 and, for example, is plugged onto a transverse web 15A of the winding axis 15, in order to Wind up the large poster 9 to rotate about its axis. Here, too, the rotary drive can consist of a simple manual drive, for example a crank, which is attached to the crosspiece 15A with its tool part through the hollow pin 49. The large poster 9 is about the winding axis 15 wrapped around to the poster roll 17, which is then inserted into the Transpcrtkassette 40. For this purpose, the two closure pieces 8 are pulled off the slotted tube 40 * of the transport cassette, so that the poster roll 17 with the winding axis 15 can be axially inserted into the slotted tube 40 'from the open end thereof. Subsequently, the closure pieces 48 are put back onto the ends of the slotted tube 40, wherein they engage with their hollow pins 49 in the tubular winding axis 15. The free end of the large poster wound up to the poster roll 17 passes through the axial slot passage 41 'and is thus located on the outside of the transponder cassette 40, as shown in FIGS. 12 and 18.

Also in the embodiment of the poster showcase according to FIG. 12, the large poster 9 is wound up into the poster roll 17 and inserted into the transport cassette 40 of the poster showcase, in which it is then unwound from the poster roll and into which it is unwound by means of an unwinding mechanism arranged therein Viewing position is spread out behind the transparent protective pane 6. As can be seen in FIG. 12, the transport cassette 40 with the poster roll 17 located in it can either be inserted from the side, ie in the direction of arrow X, through the poster insertion opening 50 into the poster display case, for which purpose a closing flap 51 normally closing this poster insertion opening 50 is opened becomes. Instead, the transport cassette 40 can also be inserted axially from below in the direction of the arrow XI through a narrow poster insertion opening 50 'arranged on the bottom 4 of the display case 2, which can also be closed by a closure flap 51' or another cover, into the poster display case become. It can be seen that the poster insertion opening 50 on the side wall 4 ″ of the display case 2 extends approximately over the entire height of the display case. The transport cassette 40 with the inserted poster roll is also positioned exactly in the poster showcase 1, so that the protruding poster end 9 'is located in the access area to the unwinding mechanism. For positioning the transport cassette 40 and thus the one in it. The poster roll 17 is located in the side area of the display case 2, ie in the vicinity of the poster insertion opening 50 or 50 ', a poster roll holder 60 (FIG. 16) is provided which consists of holding elements 60' arranged vertically above one another, ie in the vicinity of the bottom 4 and the top wall 4 'on the inside in the display case, which hold the vertically standing transport cassette 40 on both of them Hold the ends in the display case 2 in the correct position. These holding elements 60 'can be made from simple mechanical plug-in or clamping sockets, from permanent magnetic holding elements or the like. exist, which allow a firm but detachable connection of the transport cassette 40 to the poster roll holder 60. In the embodiment shown, the transport cassette 40 is held at its end-side locking pieces 48 in the poster roll holder 60, which have a configuration corresponding to its holding elements 60 '. Furthermore, it can be seen that in the vertical position shown in FIG. 16 of the transport cassette 40 and thus the poster roll 17 in the poster roll holder 60, the large poster is removed from the poster roll using the aforementioned unwinding mechanism in the horizontal or lateral direction according to arrow Z of FIG is pulled off and spread out into the viewing position.

The unwinding mechanism used in the poster showcase according to FIGS. 12 to 18 is explained in more detail below. As the simplified schematic diagram according to FIG. 13 shows, the unwinding mechanism 19 of the poster showcase 1 has horizontal transport elements extending in the direction of the width dimension B (FIG. 12) of the poster showcase in the form of endless conveyor belts 61, which preferably consist of a flexible plastic material and extend essentially over the entire inner width of the display case 2, the conveyor belts 61 being deflected at their two ends via deflections, preferably deflection wheels 62, which are seated on vertical shafts 63 mounted in the display case 2. The deflection wheels 62 arranged on the same side of the display case 2 are accordingly arranged on the two shafts 63 in a rotationally fixed manner. The two conveyor belts 61 are equipped on their outside with entrainment elements in the form of teeth or cams 64, which are arranged on the belts at uniform distances from one another and are expediently molded onto them. The conveyor belts 61 are accordingly or the like in the manner of toothed belts. executed. As further shown in FIG. 13, the large poster wound in the transport cassette 40 to form the poster roll 17 has a continuous perforation 65 on its upper and lower longitudinal edge, which cooperates with the teeth or cams 64 of the conveyor belts 61. It can be seen that with a synchronous rotation of the two conveyor belts 61, their teeth or cams 64 engage in the perforations 65 and thus take the large poster while unwinding from the poster roll in the direction of arrow Z and pull it into the viewing position 1 within the display case 1. It is advisable to make the perforations in the manner of an oblong hole, such that their extension in the unwinding direction Z is greater than transversely thereto, so that the large poster made of paper is safely carried along by the unwinding mechanism.

12, 15 and 16 also show that the large poster 9 unwound from the poster roll and expanded into the viewing position is held in the viewing position by the conveyor belts 61 within the poster display case 1, so that the unwinding mechanism also holds the device Large poster 9 forms. Furthermore, it can be seen that the large poster 9 which has been spread out into the viewing position can be wound up again to form the poster roll in the transport cassette 40 by the fact that, as described in connection with the exemplary embodiments explained above, the winding axis 15 of the transport cassette held in the poster roll holder 60 40 is rotated in the winding direction. This is expediently carried out from the outside of the poster showcase 1, for example via the opening 50 ′ shown in FIG. 12, via which the lower hollow pin 49 (FIG. 17) and thus the winding axis 15 of the transport cassette 40 held in the poster roll holder 60 can be reached on the outside with the rotary drive or with the rotary tool. The transport cassette 40 with the winding axis 15 thus forms the roll-up mechanism for the old poster when the poster is changed. When the poster 9 is wound onto the winding axis 15, the conveyor belts 61 run freely, so that an exact winding of the large poster can be achieved. The unwinding mechanism 19 described above can also be designed such that only a single conveyor belt 61 is provided, which is assigned to the upper edge of the poster. The conveyor belt attacking the bottom of the poster can therefore be omitted here.

In Fig. 12, the two conveyor belts 61 with their shafts 63 are indicated for reasons of clarity. It goes without saying, however, that the conveyor belts 61, like the shafts 63, can be hidden behind the frame profiles of the pane frame 7, as seen from the visible side of the poster showcase.

15 and 16 show details of the Abv.-nickel mechanism 19 described above. It can be seen that the conveyor belts 61 consist of toothed belts which are provided with a toothing 66 on their inside. Correspondingly, the deflection wheels 62 are designed as toothed rollers which cooperate with the toothing 66 of the conveyor belts, so that a slip-free drive of the conveyor belts 61 is ensured. Fig. 15 also shows that the deflection wheels 62 as well as their shafts 63 seen from the visible side (arrow A) of the poster showcase 1, are arranged behind the vertical profile strips of the pane frame 7 in the poster showcase. Between the deflection wheels 62, the conveyor belts 61 are hidden behind the horizontal profile parts of the window frame 7. FIG. 15 also shows the large poster 9 completely unwound from the poster roller and in the viewing position behind the closed protective window 6 16 shows, the large poster 9 is held under a certain tension in the spread viewing position by the positive engagement of the cams or teeth 64 of the conveyor belts 61 on the conveyor belts 61. The poster roll holder 60 with the holding elements 60 'lies on the side of the poster insertion opening 50 or 50' behind the deflection wheels 62 and their shaft 63. The shaft 63 in question is coupled in a gearbox manner via a toothed belt 67 to a likewise vertical drive shaft 68, so that by rotating the drive shaft 68 via the toothed belt drive 67, the shaft 63 and thus the unwinding mechanism with the deflection wheels 62 and the conveyor belts 61 can be driven. The drive shaft 68 is mounted in the display case so that it can be actuated from the outside via the poster insertion opening 5. The rotary drive of the drive shaft 58 can, however, also take place according to FIG. 12 from its underside through the opening 50 ', which can also be provided in addition to the poster insertion opening 50. On the other hand, the drive shaft 68 with the toothed belt drive 67 can also be omitted. In this case, the shaft 63 on the side of the poster insertion opening 50 or 50 'can be rotated at its lower end 63' (FIG. 12) through the opening 50 'from the outside. An arrangement is also possible in which this shaft 63 is extended down to the bottom 4 or beyond it, so that it can be turned from the underside of the display case 2 from the outside.

15 and 16 show that at the level of the deflection wheels 62 in the showcase housing 2 horizontal guide strips 69 are arranged, which are provided with guide slots 70 for guiding the large poster 9 on the upper and lower edge of the poster. The guide strips 69 have lateral openings in the area of the deflection wheels 62 for the passage of the deflection wheels and for the passage of the conveyor belts 61. The arrangement of the guide strips 69 improves the poster guidance when unwinding and winding up the large poster. The guide strips 69 are hidden behind the horizontal profile parts of the window frame 7 between the latter and the plane of the vertical shafts € 3. The approximately U-shaped profiled guide strips 69 serve with their inner legs 69 'to guide the toothed or conveyor belts 61 in the intermediate area between the deflection wheels 62.

To insert the poster into the poster showcase, the transport cassette 40 with the plaque roll 17 stored therein on the winding axis 15 is introduced into the poster showcase 1 via one of the aforementioned poster insertion openings 53 or 50 '(FIG. 12) and into the poster roll holder 60 or the retaining elements 60 'forming it (FIG. 16), as a result of which the poster roll is held in its position in relation to the unwinding mechanism 19. The end previously led out of the transport cassette 40 15, as can be seen from FIG. 15, the poster 9 can be introduced into the access area of the unwinding mechanism or its conveyor belts 61, so that the poster 9 of. in the subsequent rotary movement of the drive shaft 68 of the unwinding mechanism the or the conveyor belts 61 designed as cam or toothed belts are detected at the perforations 65 and taken along. In this case, the poster of the poster roll 17 is unwound and pulled at its poster edges in the slot guides 70 of the guide strips 69 into the viewing position according to FIG. 15, in which it is held in the perforation 65 by the positive engagement of the teeth or cams 64 . If the large poster of the poster showcase 1 is to be removed when changing the poster, the winding axis 15 of the transport cassette 40 held in the poster roll holder 60, which can be reached, for example, via the opening 50 ', is rotated from the outside of the poster showcase, whereby the poster in the transport cassette 40 again turns into the poster roll 12 is wound up. During the winding-up process, the poster is held by the freely returning unwinding mechanism 19, so that trouble-free and clean rewinding of the poster 9 into the transport cassette 40 is possible, which then then takes place via the relevant poster insertion opening 50 or 50 ' Poster showcase 1 can be removed. All of the above-mentioned work when inserting the large poster into the poster display case and when removing it from the poster display case can also be carried out from the outside of the poster display case without the protective pane 6 having to be opened.

As mentioned, the poster 9 can be wound up around its narrow side, which is defined here by poster height, to the poster roll 17 and can be pulled off the piaco roll when it is inserted into the poster display case 1. In the poster showcase shown in FIGS. 12 to 18, the poster roll and consequently also the transponder cassette 40 must therefore be arranged upright in the poster roll holder 60. In the case of a large poster 9, the height dimension of which is greater than its width dimension, the unwinding mechanism 19 shown in FIGS. 12 to 18 can be designed when the large poster is introduced into the poster display case as well as a poster elevator. The poster roll or the transport cassette 40 receiving it must in this case, be arranged in the horizontal position in the poster roll holder 60, while the conveyor belts 61 engaging on the side edges of the poster 9 are arranged in the vertical position in the poster display case 1. The perforation 65 on at least one of the two parallel poster edges can be brought about by immediate perforation of the large poster made of paper. However, there is also the possibility of using a perforated strip which has the perforation and is attached, for example glued or by means of a Velcro connection or the like, to the poster edge concerned. is detachably connected.

In the embodiment according to FIGS. 12 to 18, the large poster unwound to form the poster roll 17 can also be inserted into the poster roll holder 60 without a transport cassette 40, which in this case forms a rotary holder for the poster roll 17 or its winding axis 15. It is also possible to arrange the poster roll holder 60 on the closure flap 51 of the poster insertion opening 50. The arrangement with distributor can be made in such a way that by closing the flap 51, the poster roll 17 is positioned in relation to the unwinding mechanism 19 such that the end 9 'of the poster roll lies in the access area of the unwinding mechanism. The closing movement of the closing flap 51 is therefore used here to bring the poster end 9 ¹ into the access area of the unwinding mechanism 19.

In the embodiment according to FIGS. 12 to 18, different devices can also be used for the unwinding mechanism 19. Instead of the positive tooth or cam engagement in the perforation 65, it is also possible to work with a frictional connection between the conveyor belt (s) 61 and the poster edge. For example, the upper conveyor belt 61 can be coated with a Velcro coating, while the poster 9 on its associated edge cooperating with the Kiett covering driver elements, such as a narrow Velcro tape or Velcro knobs or the like. has, so that the poster is taken away from the poster roll by the Velcro connection with the conveyor belt 61. The unwinding mechanism shown in FIGS. 12 to 18 can also be changed so that the two conveyor belts 61 are replaced by a single conveyor belt, the width dimension of which is approximately the same or slightly larger than the height of the large poster. In this case too, the coupling between the conveyor belt freely rotating in arrow direction Z and in the opposite direction and the poster end 9 'can be effected by teeth, cams 64 on the conveyor belt or also with the aid of other coupling driver elements, for example by the aforementioned Velcro elements, through permanent magnetic driver elements, etc. This version of the unwinding mechanism can also be used if it works as a poster elevator in the poster showcase.

14 shows, in a schematic simplification, a modified embodiment of an unwinding mechanism 19, only the stop end 9 'of the large poster being shown. In this case, the unwinding mechanism consists of a gripper bar 71, which at its upper and lower ends each has a guide 70, which is preferably designed in the manner of the guide bar 69 shown in FIGS. 17 and 18, in the unwinding direction acc. Arrow Z and is guided in the opposite direction, namely by means of an associated drive, not shown, which consists of a simple traction drive, a chain drive or the like. can exist. In the exemplary embodiment shown, the coupling of the large poster positioned and held in the poster holder 60 with the gripper bar 71 takes place with the aid of mechanical driving elements 72 arranged on the gripper bar 71, which are designed here as clutch hooks. The large poster has at its free end 9 'holes or perforations 65' with which it can be hung in the coupling hook 72 in order to effect the positive coupling. In the exemplary embodiment shown, the holes 65 'are designed as vertical elongated holes. They can be stamped directly into the paper of the large poster or in a paper tape, a perforated strip or the like. are arranged, which is connected to the vertical poster edge 9 ', preferably easily detachable, which can be achieved, for example, with the aid of a clamp connection. In this embodiment, only a few entrainments are required on the gripper bar 71 and on the stop edge of the poster 9. mer or coupling elements to be provided. The guide strips 70, which guide the gripper bar 71 during their movement in the unwinding direction Z of the poster and in the opposite direction, are expediently designed such that they also serve to guide the poster, as is the case with the guide bars 69 in FIGS. 17 and 18 is shown. Instead of the driver elements consisting of holes 65 'and coupling hook 72, other driver elements can also be provided, for example those in the manner of a Velcro fastener, permanently magnetic drivers, in which the permanent magnets expediently on the gripper bar 71 and the metal or Magnetic elements are arranged on the poster roll. For the drive movement of the gripper bar 71, in addition to a simple pull cable drive, an endless chain or belt drive coupled to the gripper bar can also be provided, these drives also advantageously being actuated from the outside of the poster showcase with the protective disk 6 closed.

In the poster display case according to the invention, when the poster is changed, the poster is rolled up inside the poster display case by means of a roll-up mechanism which, as described above, is preferably part of the transport cassette and is formed by a rotatable winding axis or winding shaft with a rotary drive. If work is carried out without a transport cassette, the reeling mechanism or the winding axis is arranged on the poster roll holder, so that the winding axis can be rotated in a pivot bearing of the poster roll holder by means of a rotary drive. As stated, very different devices can also be used for the unwinding mechanism. For the unwinding of the poster from the poster roll and for the winding up of the poster to the poster roll, a common unwinding and rewinding mechanism can also be provided, namely a winding device used to wind up and unwind the poster, which is suitable for the transport cassette for the Poster roll is assigned, but can also be arranged on the poster roll holder 9, in which the poster roll can then be inserted without a transcort container with a winding axis. 19 shows, in a schematic simplification, a poster showcase 1 designed in this respect, with the basic structure corresponding to the poster showcases described above, from its visible side and only in the upper head. It can be seen that in the head space of the poster showcase below the top wall 4 'of the display case 2 the poster roll holder 60 is arranged such that the transport cassette 40 equipped with the poster roll can be inserted horizontally into the poster roll holder 60, whereby it can be inserted with its two opposite ends is positioned and held in the holding elements 60 'of the poster roll holder. The transport cassette 40 can be inserted into the poster roll holder 60 through a poster insertion opening arranged on the vertical side wall 4 ″ of the display case 2, similar to that according to FIG. 7, the insertion opening shown here only in the arrangement according to FIG. 19 in the upper one Area of the relevant side wall 4 ¹ 'is arranged. On the other hand, the transport cassette 40 can also be inserted from above into the display case or into the poster roll holder 60, the top surface 4 'being provided with a corresponding insertion opening. A bar 73 is placed on the poster end 9 ′ projecting downward from the jacket opening of the transport cassette 15, which forms a weighting and guide bar and in the process leads with its ends in lateral vertical guides 74 inside the showcase housing 2. 19 shows, is located on the. one or both ends of the transport cassette 40 has a rotary drive 75, with the aid of which the winding axis 15 located in the transport cassette 40 and forming a winding shaft can be rotated either in the unwinding or in the winding direction of the poster, this winding drive being a simple manual drive or can also consist of an electric drive. By actuating the rotary drive 75, the winding axis 15 can be rotated in the unwinding direction, so that the poster 9, supported by the tensile force exerted by the bar 73, runs downward under the force of gravity in the display case 1 and consequently into the spread-out viewing position behind the rubble disk 6 reached. The guides 74 achieve an exact poster guidance. To move the poster back to the poster roll in the transport cassette 40 when changing the poster the winding axis 15 is rotated in the winding direction with the aid of the same rotary drive 75, so that the poster 9, guided by the guide 70, is wound onto the winding shaft of the transport cassette 40 in the manner of a roller shutter. As soon as this has happened, the transport cassette 40 can be removed through one of the aforementioned housing openings to the side or upwards from the poster showcase. This system thus works in the manner of a roller shutter, the winding shaft of which can be driven in the unwinding or winding direction, the rotary actuation also being able to take place from the outside of the poster display case with the protective pane closed.

In the poster showcase according to FIG. 19, instead of in the head space of the showcase housing 2, the poster roll holder 60 can also be placed outside the same, e.g. be arranged on its head surface 4 'or above it on a corresponding holder, a corresponding poster insertion opening being arranged on the head surface 4' of the display case 2, through which the poster end 9 'protruding from the transport cassette 40 with the bar 73 from above into the Showcase housing 2 can be inserted so that it can be unwound by actuating the rotary drive from the winding axis of the transport cassette into the viewing position downwards and can be wound up again in the transport cassette for the poster roll when the poster is changed.

In all the described embodiments of the poster showcase according to the invention, a poster fluoroscopy can also be used, a corresponding lighting system being arranged in the interior of the showcase housing, which illuminates the poster located in the viewing position from its rear. The method according to the invention and the poster showcases according to the invention are intended for large poster advertising, in which the edge dimensions of the large posters are generally at least 1.7 mx 2.5 m, but are often considerably larger in practice. These large posters are usually composed of a more or less large number of individual poster sections. However, the large poster can also consist of a one-piece, not individual sheets. consist of a poster, for example also consist of a printed plastic film. Furthermore, according to the invention, several large posters connected at their ends can be rolled up to form a common poster roll 17, which is then inserted into the poster roll holder of the poster showcase. In this case, the poster change can be effected in that the poster roll is unwound one level at a time using the unwinding mechanism, so that the individual posters are brought into the viewing position behind the protective pane in succession. Here, a roll-up mechanism can be provided, on which the poster is wound up with its other end during the step-by-step further unwinding. In this arrangement, an electronic transport control can also be provided, with the aid of which the unwinding mechanism is switched on when changing from one poster motif to the next poster motif.

As described above in connection with the various exemplary embodiments, the poster showcase according to the invention is assigned a poster roll holder in which the poster roll or, if it is located in a transport cassette, the transport cassette is positioned and held to the unwinding mechanism, the Poster roll either directly in the poster roll holder or, if a transport cassette is used, is rotatably mounted in the transport cassette, so that it can be unwound from the poster roll into the visible position with the aid of the unwinding mechanism and expediently also rewound to the poster roll. The poster roll holder is preferably located inside the poster showcase, but can also be arranged on the outside of the poster showcase, in the latter case the poster being introduced into the poster showcase from the unwinding mechanism through a poster insertion opening of the showcase while unwinding the poster roll into the pla ¬ katvitrine and here is pulled into the spread viewing position. The unwinding mechanism also serves to hold the poster spread out into the viewing position within the poster showcase. The use of the pressure device described, with the aid of which the poster is pressed against the inner surface of the transparent protective pane in the viewing position, can also be dispensed with if it is ensured that the poster in the poster display case is held taut and without corrugation. If the poster showcase according to the invention, as is preferably provided, is designed so that all poster work when inserting the poster into the poster showcase and when changing the poster can be carried out from the outside of the poster showcase without opening the transparent protective pane, then the pivotable one can be used Storage of the transparent protective pane can also be dispensed with. In this case, the protective pane can be arranged firmly on the poster showcase. As described, a slot guide is expediently provided in the poster showcase, in which the poster guides during the winding process.

Protection is claimed both for the method according to the invention in its various embodiments as well as for the poster display cabinets according to the invention and finally also for the various embodiments of the transport cassettes in which the poster rolls are rotatably arranged.

Claims

Patent claims:

1. Procedure for carrying out the poster work in the case of poster showcases for large-area advertising, that is, the prefabricated large poster

(9) wound up into a poster roll (17), fed to the poster showcase (1) and positioned, whereupon the large poster (9) is unwound from the poster roll (17) with the aid of an unwinding mechanism and brought into the viewing position within the poster showcase (1) becomes.

2. The method according to claim 1, characterized in that when the poster is changed, the large poster (9) to be removed from the poster cabinet (1) is wound up by means of a roll-up mechanism to form the poster roll (17), whereupon it acts as a poster roll from the Poster showcase (1) is removed.

3. The method according to claims 1 and 2, dadurchge ¬ indicates that ß the large poster (9) rolled up on a winding rod to a poster roll (17) in the poster showcase (1) and in this while unwinding from the winding rod into the Position is brought within the poster showcase, and that when the poster is removed, the large poster (9) in the poster showcase (1) is rewound by means of a roll-up mechanism to the poster roll (17) before it is removed from the poster showcase.

4. The method according to any one of claims 1 to 3, characterized in that the poster roll (17) is fed and positioned in a transport cassette (14) of the poster display case, from which the large poster (9) is then unwound and brought into the viewing position .

5. The method according to any one of claims 1 to 4, characterized in that the poster roller (17) or the transport cassette (40) receiving it when closed. its protective pane (6) of the poster showcase is introduced into the poster showcase through a separate insertion opening thereof.

6. The method according to any one of claims 1 to 5, d a d u r c h g e k e n n e e c h n e t, d a ß the poster roll (17) with a winding rod (15) positioned in the insertion space of the display case in the unwinding position and held during unwinding.

7. The method according to any one of claims 1 to 6, d a d u r c h g e k e n n e e c h n e t, that when the poster is removed, the large poster (9) is wound back onto a drivable winding rod (15), preferably onto the winding rod stored in the transport cassette (14).

8. The method according to any one of claims 2 to 7, d a d u r c h g e k e n z e i c h n e t d ß ß ß the retraction mechanism is actuated with the protective window closed from the outside of the poster showcase ago.

9. The method according to any one of claims 1 to 8, characterized in that the unwinding of the large poster (9) from the poster roll (17) with the protective window (6) closed by means of an unwinding mechanism (19) that can be actuated from the outside of the poster display case ) is carried out.

10. The method according to any one of claims 1 to 9, characterized in that the large poster (9) having a rectangular format is wound around its narrow side to the poster roll (17) and fed to the poster showcase and in this by means of an unwinding mechanism (19) around the in Direction of its narrow side winding axis is unwound and thereby spread out into the visible position behind the protective disc (6).

11. The method according to claim 10, characterized in that ß in a poster showcase whose width (B) is greater than its height (H), the large poster (9) inserted from below or laterally into the poster showcase and in this by means the unwinding mechanism (19) is unwound around the upright winding axis of the poster roll in the lateral direction (Z).

12. The method according to any one of claims 1 to 11, d a d r c h g e k e n n z e i c h n e t, d a ß from a poster roll

(17) which has a number of poster motifs in succession, by successively actuating the unwinding mechanism, which is preferably controlled by an electrical transport control, the poster motifs are brought into the viewing position one after the other, with the unrolling of the poster from the winding axis of the unwound poster section at the same time is wound up by means of the reeling mechanism.

13. The method according to any one of claims 1 to 12, characterized in that the, preferably in a transport cassette (40) arranged poster roll (17) is arranged in a horizontal position in a in the head space of the poster showcase or above and with the help of a poster roll holder at the same time, the unwinding mechanism and the reeling mechanism for the winding shaft rotary drive forming the poster are unwound from the poster roll (17) down to the viewing position within the poster showcase and, when changing the poster, are wound back up onto the winding shaft (15).

14. Display cabinet for large-area advertising, the large poster consisting of interconnected poster sheets being detachably attached to its upper edge of the poster on a poster carrier in the poster cabinet behind the transparent protective pane that can be opened into an open position, characterized by the fact that the poster Carrier is formed by an unwinding mechanism (19) in the form of a Piakataufzug the poster showcase (1) with which the large poster (9) rolled up to the poster roll (17) can be unwound from the poster roll (17) while being brought into the viewing position.

15. Poster showcase according to claim 14, characterized in that the poster showcase (1) has a, preferably at the bottom of the showcase housing (2) arranged, insertion space (18) for receiving and positioning the rotatable poster roll (17) in the access of Has poster elevator.

16. Poster showcase according to claim 14 or 15, d a d u r c h g e ¬ k e n n z e i c h n e t, d a ß a roll-up mechanism for rewinding the large poster (9) within the poster showcase (1) is provided when changing the poster.

17. Poster showcase according to one of claims 14 to 16, d a ¬ d u r c h g e k e n n z e i c h n e t, d a ß the billboard lift from a tape roll system, e.g. in the manner of a roller shutter, a blind, an articulated arm awning, or from flexible drawstring elements (20) arranged in the side areas of the poster showcase, guided from the lower to the upper showcase area and running over deflection rollers, with an associated driver device (31) for the large poster ( 9) exists.

18. Poster showcase according to claim 17, characterized ¬ characterized in that the parallel Zugband¬ elements (20) are endless, preferably consist of endless chains and each in the upper and lower showcase area via deflection rollers or toothed rollers (21) are redirected.

19. Poster showcase according to one of claims 14 to 18, since ¬ characterized in that the poster roll (17) by means of a coupling rod (14) arranged on the upper poster edge of the large poster via a driver device (31), preferably formed by hook-shaped driver elements ) can be detachably coupled to the poster elevator.

20. Poster showcase for large-area advertising with an approximately rectangular showcase housing and a transparent protective pane covering this on the visible side, characterized in that inside the poster showcase (1) a large poster (9) is removed from the poster roll (9) The winding mechanism (19) which winds and extends into the viewing position is arranged such that a poster roll holder (32, 52, 60) is provided, in which the poster roll (17) is positioned and about one in the direction of the shorter axis of the large poster (9 ) running axis is rotatably mounted, the large poster being able to be unwound from the poster roll (17) into the extended viewing position by means of the unwinding mechanism (19) in the direction of the longer axis of the poster showcase or the large poster.

21. Poster showcase according to claim 20, characterized in that the poster roll (17) in the poster holder (60) is rotatably mounted in a vertical position about its roll axis, while the unwinding mechanism (19) as a the large poster in the direction of the width of the poster ¬ showcase is formed in the visible position unwinding transport mechanism.

22. Poster showcase according to claim 20 or 21, dadurchge ¬ indicates that ß the unwinding mechanism (19) on the poster edge of the large poster (9) with form and / or frictional engagement, in the unwinding direction of the large poster drivable transport element having at least one over Endless conveyor belt (61) encircling deflections, which is provided on the outside with one or more driver elements (64) engaging on the poster edge.

23. Poster showcase according to claim 22, d a d u r c h g e k e n n ¬ z e i c h n e t, d a ß the driver elements (64) made of cams, teeth or the like. exist, the. Large poster (9) with an edge perforation (65) for the engagement of the cams, teeth or the like. is provided.

24. Poster showcase according to claim 22 or 23, d a d u r c h g e ¬ k e n n z e i c h n e t, d a ß the or the conveyor belts

(61) revolve around reversing wheels (62), the preferably vertical axes of rotation of which run parallel to the unwinding axis of the poster roll (17) arranged in the poster roll holder (60).

25. Poster display case according to one of claims 14 to 24, d a ¬ d u r c h g e k e n n z e i c h n e t, d ß ß ß ß on the Vitri¬ nengehäus (2) with one, preferably by a cover (51), such as a sealing cap, closable poster roll insertion opening (50, 50 ') is provided, through which the poster roll (17) with the protective pane (6) in the closed position enters the display case (1) or in its insertion space from is insertable outside.

26. Poster showcase according to claim 25, d a d u r c h g e k e n n - z e i c h n e t, that the poster roll holder (52, 60) is arranged in the area of the poster roll insertion opening (50, 50 ').

27. Poster showcase according to one of claims 14 to 26, d a d u r c h g e k e n n z e i c h n e t, that the plaque roll holder is arranged such that the outer end of the placard (9 ') of the placard roll (17) lies in the access area of the unwinding mechanism (19).

28. A display case according to one of claims 14 to 27, characterized by the fact that the unwinding mechanism (19) with the protective screen (6) closed from the outside of the display case (1), for example by means of a Manual drive or an electric drive, is actuated.

29. Poster showcase according to one of claims 25 to 28, since ¬ characterized in that ß the poster insertion opening (50, 50 ') in the lower region of the Vitrinen¬ housing on the side or front extending across the width of the poster showcase or on one or both side walls (4 '') of the display case (2) is arranged.

30. Poster showcase according to one of claims 14 to 29, d a ¬ d u r c h g e k e n n z e i c h n e t, d a ß the Aufroll¬ mechanism when the protective window (6) is actuated from the outside of the poster showcase by means of a manual drive or an electric drive.

31. Poster showcase according to one of claims 14 to 30, d a ¬ d u r c h g e k e n n z e i c h n e t, d a ß ß ß the poster roll (17) is arranged in a transport cassette (40) insertable from this unwindable into the poster showcase.

32. Poster showcase according to claim 31, d a d u r c h g e k e n n ¬ z e i c h n e t, that the reel mechanism is formed by a winding rod (15) which is arranged as a drivable winding shaft in the transport cassette (40).

33. poster showcase according to claim 31 or 32, dadurchge ¬ indicates that ß the transport cassette (40), in which the poster roll (17) is arranged to be wound up and unwound, can be detachably connected to the poster roll holder (52, 60) of the poster showcase, the the end (9 ') of the poster roll (17) protruding from the slot opening of the transponder cassette forms the end of the attack for the unwinding mechanism (19).

34. Poster showcase according to one of claims 14 to 33, d a ¬ d u r c h g k e n n z e i c h n e t, d a ß that in the

Large poster (9) located within the poster showcase by means of a pressure device (26) which an adjusting device can be adjusted in the direction of the protective pane (6) and in the opposite direction in the poster showcase, can be pressed against the closed protective pane (6), the pressing device being actuable from the outside of the poster showcase when the protective pane (6) is closed.

35. Poster showcase according to any one of claims 14 to 34, d a ¬ d u r c h g e k e n n z e i c h n e t, d a ß as

Illuminated showcase is executed, in the showcase housing between a e.g. a light scattering film is arranged by fluorescent tubes or a light source formed by a light guide film and the large poster in the viewing position.

36. Transport cassette for a poster roll for use in the method according to one or more of claims 1 to 13 and / or in a poster showcase according to one of claims 14 to 35, characterized in that the poster roll (17) is rotatably arranged in the transport cassette The transport cassette (14) is provided with a passage (41, 41 ') running in its longitudinal direction for the large poster (9) to be unwound from the poster roll (17) or rolled up for this purpose.

37. Transport cassette according to claim 26, d a d u r c h g e ¬ k e n n z e i c h n e t, that it has a winding rod (15) mounted in a pivot bearing on the inside, onto which the large poster (9) can be wound or from which the large poster can be wound.

38. Transport cassette according to claim 36 or 37, d a d u r c h g e k e n n z e i c h n e t, that it has an opening on its one end face (42) or on both end faces (42) for the rotary actuation of the winding rod (15) by means of a turning tool which can be attached to the end of the rod.

39. Transport cassette according to one of claims 36 to 38, characterized in that ß they on their outside, preferably on their opposite longitudinal Sides in a symmetrical arrangement, holding means (46) for their releasable locking in the insertion space of the poster showcase.

40. Transport cassette according to one of claims 36 to 39, d a ¬ d u r c h g e k e n n z e i c h n e t, that it is designed telescopically extendable.

41. Transport cassette according to one of claims 36 to 40, since ¬ characterized in that ß on its circumference a slot opening (41 ') and inside a winding shaft (15) for winding and unwinding the poster (9) auf¬ has, the winding shaft (15) being rotatable by means of an end-side rotary drive, and the length of the transport cassette (40) being adapted to the length of the smaller edge dimension of the rectangular poster (9).

42. Transport cassette according to one of claims 36 to 41, d a ¬ d u r c h g e k e n n z e i c h n e t, that it consists of a cylindrical tube made of light material, which at its ends carries detachable locking pieces (48) on which the winding shaft (15) is mounted.

43. Transport cassette according to one of claims 36 to 42, d a ¬ d u r c h g e k e n n z e i c h n e t, that the ends of the winding shaft (15) are mounted on open hollow pins (49) of the locking pieces (48).