LIGHTBOX AND LIGHTBOX GROUP HEREBY

Description

[0001] The invention relates to a light box according to claim 1 and a light box group with at least two such light boxes according to claim 12.

[0002] Light boxes are used to illuminate an information medium from behind to highlight the information on the medium, make it legible in the dark, or simply create a higher-quality impression than, for example, posters. Today, they represent a kind of intermediate stage between posters as simple presentation options on the one hand and flat screens on the other.

[0003] For example, DE 20 2006 006 889 U1 discloses a light box for presenting translucent printed films or photographic slides. A light box housing with an interior is constructed from aluminum profile strips and a rear panel. A light source is located inside. Velcro strips are arranged on the front of the light box housing in the area of ​​the aluminum profile strips for securing the films or slides or for a translucent cover panel.

[0004] This design is relatively complex and therefore relatively expensive to manufacture. For use as an information and advertising display, the weight is also significant, as the light box often needs to be transported and set up at short notice.

[0005] Other light boxes are known, for example, from US 2006 / 162202 A1, DE 20 2018 104 102 U1 and DE 20 2007 018 388 U1.

[0006] The task is to overcome the disadvantages of the state of the art and to create a light box for an information and advertising space that is inexpensive and easy to set up and transport.

[0007] Main features of the invention are defined in claim 1 and claim 12. Embodiments are subject of claims 2 to 11.

[0008] The invention relates to a light box with a front part having a front side and a back part having a back side. The front part has a printable, translucent, and rollable front-side plastic plate which forms the front side and has a peripheral edge. The front part also has a first edge-side connecting band which is fixed to the front-side plastic plate and which extends at least substantially (or completely) along the entire peripheral edge of the front-side plastic plate. The back part, in turn, has a rollable rear plastic plate which forms the back side and has a peripheral edge. The back part also has a second edge-side connecting band which is fixed to the rear plastic plate and which extends at least substantially (or completely) along the entire peripheral edge of the rear plastic plate.At least one electric light source is arranged on an inner side of the rear plastic panel opposite the rear side. The front part can be secured in front of the back part by means of the first and second connecting straps.

[0009] Due to their rollable nature, the front and back panels are easy to roll up and store. The light box is thus easily transportable and is also suitable for short-term decoration of presentation areas such as exhibitions or trade fairs. The front plastic panel should be printed, for example, with a motif, logo, and / or text. The back panel can be combined with differently printed front panels.

[0010] According to a more detailed embodiment of the invention, the front part can be reversibly formed into a roll by rolling up the front plastic plate. This allows the front part to be compactly packed and easily transported.

[0011] According to a further detailed design, the back panel can be reversibly formed into a roll by rolling up the rear plastic panel. This allows the back panel to be compactly packed and easily transported.

[0012] One variant allows the front and back sections to be reversibly formed into a roll by rolling the front and back plastic panels together, allowing the light box to be transported in a particularly space-saving manner.

[0013] The light box preferably has a packaging tube for storing the roll(s). This prevents transport-related impact damage, particularly to the plastic panels.

[0014] According to the invention, the front part is secured to the back part by means of the first and second connecting straps, which can be removed without causing damage. Thus, the light box can be assembled and disassembled repeatedly.

[0015] According to a particular embodiment, the first and second connecting straps are flexible or elastically deformable, in particular such that the front part and / or the back part can be rolled up in the longitudinal direction of the first and / or second connecting strap. Optionally, the connecting straps that run transversely to the rolling direction can be designed to be more rigid. This allows for a high degree of rigidity of the light box.

[0016] In one embodiment, securing the front part in front of the back part involves direct contact between the first and second connecting straps. This allows for a damage-free, detachable connection between the first and second connecting straps, for example, to be based on adhesion, in particular on van der Waals forces. For example, the adhesion can be achieved by forming the first and / or second connecting straps with polyvinyl chloride, polyethylene, silicone, or poly(organo)siloxanes. According to an alternative, the damage-free, detachable connection between the first and second connecting straps can be achieved by forming them as a hook-and-loop fastener.

[0017] According to another version, the front part is secured in front of the back part by a spacer between the first and second connecting strips, e.g., the front plastic plate, the rear plastic plate, or a profile bar. Thus, the connecting strips can be concealed or arranged externally. An external arrangement could, for example, form a picture frame. Using a profile bar as a spacer, it is possible to provide structural reinforcement. However, particularly high transport comfort is achieved with variants that do not have rigid structural elements for clamping the light box.

[0018] Another option is to use magnetism to create a damage-free, removable connection between the first and second connecting straps. This is particularly convenient, among other things, because magnets are suitable for centering the front section relative to the back section.

[0019] In principle, it is possible for the first connecting band to be composed of consecutively arranged first band segments. This simplifies assembly and allows for the precise positioning of magnetic components. Furthermore, defined gaps can be provided between band segments, for example, for cable routing. Likewise, the second connecting band can be composed of consecutively arranged second band segments.

[0020] To create a damage-free, detachable connection based on magnetism, the first connecting band and / or the second connecting band should be magnetized at least in sections. The other band from the group of first connecting band and second connecting band can optionally be magnetizable at least in sections (but not magnetized).

[0021] In a specific embodiment, the first and / or the second connecting tape is a magnetic tape, and the other of the group of first and second connecting tape is a magnetic tape or a magnetizable tape.

[0022] The first and / or second connecting strips are preferably glued or welded to the first and / or second plastic plates, respectively. This ensures a permanent and stable connection.

[0023] High dimensional stability of the light box is achieved when the damage-free, removable connection between the first and second connecting strips is essentially circumferential. This also eliminates gaps and gaps through which light from the lamp could escape.

[0024] The light box is preferably cuboid-shaped. The front and back are preferably the same size, preferably rectangular, and preferably flat when in use.

[0025] According to the invention, the front plastic panel can be folded into a box-like body by means of folding lines, wherein the box-like body has side parts adjacent to the front side, to which the first connecting band is attached; and / or the rear plastic panel can be folded into a box-like body by means of folding lines, wherein the box-like body has side parts adjacent to the rear side, to which the second connecting band is attached. Folding lines on the front plastic panel allow, on the one hand, to provide visually appealing side surfaces and, on the other hand, to achieve a deeper light box that has high dimensional stability.This can be achieved, for example, by the front plastic panel being rectangular with four side edges, with a fold line running adjacent to each of the four side edges to form a side part, the four side parts being able to be brought into a position perpendicular to the front side along the fold lines to secure the front part in front of the back part. It is preferable for the side parts of the front plastic panel to have a uniform width orthogonal to the respective fold line. The width of the first connecting strip can correspond at least substantially to the width of the side parts of the front plastic panel. In particular, it can be slightly smaller. This results in stabilization of the side parts and supports a sharp bend along the fold line. This also prevents waviness on the front side.It's a good idea to create the fold lines with embossing or a weakened material. This facilitates precise folding. The corners should be cut out or form a foldable flap.

[0026] If the rear plastic panel can be folded into a box-like body by means of fold lines, wherein the box-like body has side parts adjacent to the rear side, to which the second connecting band is fastened, the back part is dimensionally stable as soon as the side parts are raised. For example, the rear plastic panel can be rectangular with four side edges, wherein a fold line runs adjacent to each of the four side edges to form a side part, wherein the four side parts can be brought into a position perpendicular to the rear side along the fold lines to secure the front part in front of the back part. Preferably, the side parts of the rear plastic panel have a uniform width orthogonal to the respective fold line. This allows a box-like body with a uniform height to be folded. It is advisable to form the fold lines with an embossing or a weakening of the material.This facilitates precise folding. Ideally, the width of the second connecting strip should at least substantially correspond to the width of the side panels of the rear plastic sheet. It can be slightly smaller. This stabilizes the side panels, and the second connecting strip helps ensure a sharp crease along the fold line.

[0027] If the front plastic panel also has the optional fold lines, a design is preferable in which the width of the side parts of the front plastic panel at least essentially corresponds to the width of the side parts of the rear plastic panel. After folding the side parts, two box-like bodies are created that are at least essentially identical in shape and can be plugged into one another. After plugging these box-like bodies together, a closed box-like body is created in which the light source is arranged. However, it is not necessary to fold the two box-like bodies chronologically first. It is just as possible to fix individual side parts to one another using the connecting straps and gradually move one side part after the other into position. Only then do the two box-like bodies fit into one another as a final result, without them having previously existed individually.

[0028] In a special embodiment, the side parts of the front plastic panel are arranged on the outside of the side parts of the rear plastic panel when in use. This provides a visually appealing edge around the perimeter of the front panel, from which no stray light can radiate.

[0029] Furthermore, it is optionally possible for the first connecting strap to be attached to the inside of the front plastic panel, opposite the front. This places it in a non-visible area when the front panel is attached in front of the back panel. This also places it closer to the second connecting strap, allowing for a stronger connection.

[0030] In one version of the light box, the rear plastic panel is opaque and / or light-impermeable. This allows the light box to be placed anywhere without disturbing background light escaping, without revealing the interior of the light box, and without rear light and shadows resulting in uneven illumination of the front.

[0031] A preferred feature of the light box is that the light source has LEDs distributed across the back. This saves energy, and even with a flat light box design, it ensures even illumination of the front. Furthermore, LEDs (light-emitting diodes) are usually so small that they hardly interfere with the rolling up of the back panel. According to a preferred variant, the light source is formed by LED strips. These can be rolled up individually and thus, even once attached to the rear plastic panel, do not interfere with the rolling up of the rear plastic panel. Alternatively, LED rails could also be considered, provided they are attached to the rear plastic panel perpendicular to the rolling direction of the latter.

[0032] The light box can optionally have a suspension device, for example a hook receptacle such as an eyelet or a recess, or a hanging cord. The suspension device is preferably arranged on the back part and here preferably on the back of the rear plastic panel. Using a suspension device, the light box can be hung, for example, on a wall. Alternatively or additionally, the light box can have a stand. Such a stand can, for example, be arranged or attached to the front and / or rear plastic panel. With a stand, the light box can be placed freely in the room, for example, on a table.

[0033] The invention also relates to a light box group comprising at least two light boxes as described above and below, wherein the light boxes are adjacent to one another such that the front sides of the two light boxes are arranged side by side, wherein the light boxes are secured to one another by means of a connection that can be removed without damage, preferably by means of their first and / or second connecting straps. This makes it possible to provide a large presentation surface that can be easily disassembled into its individual components for transport. It is possible for the front and back parts of several light boxes to be rolled up together into a single roll for transport.

[0034] Further features, details, and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. They show: Fig. 1 is a schematic perspective view of a light box, with a front part shown separated from a back part; Fig. 2 is a schematic view of a light box, with a front part and a back part shown next to each other; Fig. 3 is a schematic cross-section through a light box; Fig. 4 is a schematic perspective view of a back part of a light box that is rolled up into a roll; Fig. 5 is a schematic perspective view of a light box, with its front part and back part rolled up together into a roll; and Fig. 6 is a schematic perspective view of a light box group with two light boxes.

[0035] In Fig. 1 In a schematic perspective view, one can see a light box 1. This has a front part 10 with a rectangular front side 11 and a back part 20 with a rectangular back side 21.

[0036] The front part 10 is shown separated from the back part 20. The main element of the front part 10 is a printable, translucent and rollable front plastic plate 12, which forms the front side 11 and has a peripheral edge 13. The front plastic plate 12 can be printed, for example, with a motif, a logo and / or text. Furthermore, the front plastic plate 12 is folded by means of fold lines 16 into a box-like body 17 with side parts 18. From the perspective, it cannot be seen that a first connecting band (cf. reference number 14 in the Fig. 2 and 3 ). The front side 11 adjoins the side parts 18 along the fold lines 16, the latter being brought into a position perpendicular to the front side 11 in order to secure the front part 10 in front of the back part 20 along the fold lines 16.

[0037] The four side parts 18 of the front plastic plate 12 have a uniform width B1 orthogonal to the corresponding fold line 16, as can be seen in particular in the Fig. 2 The corners between the four side parts 18 are each cut out. In Fig. 2It can also be seen that the edge-side first connecting band 14 of the front part 10 is fixed to an inner side 15 of the front plastic plate 12 opposite the front side 11 and extends at least substantially along the entire peripheral edge 13 of the front plastic plate 12. The first connecting band 14 is flexible or elastically deformable and is composed of four successively arranged first band segments 14a, 14b, 14c, 14d, each of which is fixed to one of the four side parts 18. The first connecting band 14 is a magnetic band. The width B2 of the first connecting band 14 is slightly smaller than the width B1 of the side parts 18, so that the widths B1, B2 are essentially the same.

[0038] The back part 20 according to the Fig. 1 and 2has a rollable rear plastic plate 22, which forms the back 21. The rear plastic plate 12 is opaque and / or light-impermeable and has a peripheral edge 23. In addition, the back part 20 has a second connecting band 24 on the edge, which is fixed to the rear plastic plate 12, in particular according to Fig. 1 on the reverse 21 and in deviation from this in Fig. 2 on an inner side 25 of the rear plastic plate 22 opposite the rear side 21. The second connecting band 24 extends at least substantially along the entire peripheral edge 23 of the rear plastic plate 22.

[0039] According to Fig. 1 the rear plastic plate 22 is folded by means of folding lines 26 into a box-like body 27, wherein the box-like body 27 has side parts 28 adjacent to the rear side 21, on which the second connecting band 24 is fixed. According to Fig. 2The side parts 28 lie in the plane with the rear side 21. The corners between the four side parts 28 are each recessed. In particular, the rear plastic panel 22 is rectangular with four side edges, with a fold line 26 running adjacent to each of the four side edges to form the side parts 28. The four side parts 28 can be brought into a position perpendicular to the rear side 21 along the fold lines 26 to secure the front part 10 in front of the back part 20. The side parts 28 of the rear plastic panel 22 have a uniform width B3 orthogonal to the respective corresponding fold line 26. The width B4 of the second connecting band 24 is slightly smaller than the width B3 of the side parts 28 and thus corresponds at least substantially to this width B3 of the side parts 28.At the same time, the width B1 of the side parts 18 of the front plastic plate 12 corresponds at least substantially to the width B3 of the side parts 28 of the rear plastic plate 22.

[0040] The second connecting band 24 is flexible or elastically deformable and consists of four consecutively arranged second band segments 24a, 24b, 24c, 24d, each of which is secured to one of the side parts 28 of the back part 20. The second connecting band 24 is also a magnetic band.

[0041] Furthermore, an electrical illuminant 30 consisting of LEDs distributed across the rear side 21 is fixed to the inner side 25 of the rear plastic plate 22. The illuminant 30 is, in particular, LED strips running parallel to one another.

[0042] How the front part 10 and the back part 20 Fig. 2 can be assembled, is shown in the schematic cross-section according to Fig. 3 . Here, the front part 10 is secured in front of the back part 20 by means of the first and second connecting straps 14, 24. In this assembly, the side parts 18 of the front plastic plate 12 lie on the outside of the side parts 28 of the rear plastic plate 22.

[0043] If the second connecting band 24 is arranged as in Fig. 1 shown, theoretically the possibility that the fixing of the front part 10 in front of the back part 20 includes a direct contact between the first and second connecting bands 14, 24. According to the variant according to the Fig. 2 and 3 However, it is provided that the fixing of the front part 10 in front of the back part 20 comprises a spacer between the first and second connecting bands 14, 24, which is the rear plastic plate 22 and in particular its side parts 28.

[0044] The fixing of the front part 10 in front of the back part 20 by means of the first and second connecting bands 14, 24, here both magnetic bands, enables a damage-free detachable connection V, which is based on magnetism. In an arrangement according to Fig. 1 Adhesion or a Velcro connection could also be considered as a damage-free detachable connection V between the first and second connecting bands 14, 24.

[0045] Due to the extension of the connecting bands 14, 24 almost completely along the side parts 18, 28, a connection V between the first and second connecting bands 14, 24 results which can be released without damage and which is at least substantially circumferential.

[0046] Fig. 4 shows a schematic perspective view of a back part 20 of a light box, which is rolled up into a roll R2. This back part 20 corresponds in terms of technical features to the design according to Fig. 2, which is why, to avoid repetition, the Fig. 2 The corresponding description sections are referred to. As can be seen, the LED strips of the lamp 30 extend transversely to the rolling direction.

[0047] Fig. 5 shows a schematic perspective view of a light box 1, which is not assembled. Rather, its front part 10 and its back part 20 are rolled up together, lying on top of each other, to form a roll R3.

[0048] Fig. 6 A schematic perspective view of a light box group 50 with two light boxes 1. The two light boxes 1 are adjacent to one another such that the front sides 11 of the two light boxes 1 are arranged next to one another. By means of their first and second connecting strips 14, 24, both magnetic strips, the light boxes 1 are secured to one another via a connection V2 that can be removed without damage. List of reference symbols

[0049] 1 lightbox 25 inside 26 Fold lines 10 front part 27 box-like body 11 front 28 Side panels 12 front plastic plate 13 peripheral edge 30 electric light bulb 14 first connecting band 14a first band segment 50 Lightbox group 14b first band segment 14c first band segment B1 Width of the side parts of the front plastic plate 14d first band segment 15 inside B2 Width of the first connecting band 16 Fold lines B3 Width of the side parts of the rear plastic plate 17 box-like body 18 Side panels B4 Width of the second connecting band ( 20 back part R2 role 21 back R3 role 22 rear plastic plate V damage-free removable connection 23 peripheral edge 24 second connecting band V2 damage-free removable connection 24a second band segment 24b second band segment 24c second band segment 24d second band segment

Claims

1. Light box (1) having a front part (10) with a front side (11) and a rear part (20) with a rear side (21), - wherein the front part (10) has a printable and translucent front plastics plate (12), which forms the front side (11) and has a perimeter edge (13), - wherein at least one electrical light-emitting unit (30) is arranged on an inside (25) of the rear plastics plate (22) opposite the rear side (21), - wherein the front plastics plate (12) is rollable, - wherein the rear part (20) has a rollable rear plastics plate (22) which forms the rear side (21) and which has a perimeter edge (23), - wherein the front part (10) has a peripheral first connecting strip (14), which is fixed on the front plastics plate (12) and which extends at least substantially along the entire perimeter edge (13) of the front plastics plate (12), - wherein the rear part (20) has a peripheral second connecting strip (24), which is fixed on the rear plastics plate (12) and extends at least substantially along the entire perimeter edge (23) of the rear plastics plate (22), wherein the front part (10) is able to be fixed in front of the rear part (20) by way of the first and second connecting strips (14, 24), wherein the fixing of the front part (10) in front of the rear part (20) by way of the first and second connecting strips (14, 24) is a connection (V) that is releasable without damage, characterized in that - the front plastics plate (12) is able to be folded using folding lines (16) to form a box-like body (17), wherein the box-like body (17) has, adjacent to the front side (11), side parts (18) on which the first connecting strip (14) is fixed, and / or - the rear plastics plate (22) is able to be folded using folding lines (26) to form a box-like body (27), wherein the box-like body (27) has, adjacent to the rear side (21), side parts (28) on which the second connecting strip (24) is fixed.

2. Light box (1) according to Claim 1, characterized in that the front part (10) is able to be reversibly formed into a roll by rolling up the front plastics plate (12).

3. Light box (1) according to either of Claims 1 and 2, characterized in that the rear part (20) is able to be reversibly formed into a roll (R2) by rolling up the rear plastics plate (22).

4. Light box (1) according to one of the preceding claims, characterized in that the first and second connecting strips (14, 24) are flexible or elastically deformable.

5. Light box (1) according to one of the preceding claims, characterized in that the fixing of the front part (10) in front of the rear part (20) comprises direct contact between the first and second connecting strips (14, 24).

6. Light box (1) according to one of the preceding claims, characterized in that the fixing of the front part (10) in front of the rear part (20) comprises a spacer between the first and second connecting strips (14, 24).

7. Light box (1) according to one of the preceding claims, characterized in that the connection (V) between the first and second connecting strips (14, 24), which is releasable without damage, is based on magnetism.

8. Light box (1) according to Claim 5, characterized in that the connection between the first and second connecting strips (14, 24) that is releasable without damage a. is either based on adhesion; b. or is brought about by designing the first and second connecting strips (14, 24) in the form of hook- and-loop fastening.

9. Light box (1) according to one of the preceding claims, characterized in that the first connecting strip (14) is fixed on an inside (15) of the front plastics plate (12) opposite the front side (11).

10. Light box (1) according to one of the preceding claims, characterized in that the rear plastics plate (12) is opaque and / or light-proof.

11. Light box (1) according to one of the preceding claims, characterized in that the light-emitting unit (30) has LEDs distributed over the rear side (21).

12. Light box group (50) having at least two light boxes (1) according to one of the preceding claims, characterized in that the light boxes (1) adjoin one another in an adjacent manner in such a way that the front sides (11) of the two light boxes (1) are arranged next to one another, wherein the light boxes (1) are fixed to one another by way of a connection (V2) that is releasable without damage.