Display case for the visual presentation of 3D objects

Abstract

A display case (1) with a cavity (2) for the visual presentation of 3D objects (3), comprising at least one opaque back wall (4) surrounded by a one-piece, continuous, and preferably also opaque frame (5) that defines the perimeter of the cavity (2), and a transparent, self-supporting front wall (6) which completely closes the front opening of the frame (5) at a distance of at least 5 mm on all sides from the back wall (4) and is held in the frame (5) in such a way that it cannot be opened, characterized in that at least two inner surfaces (9, 19) of the display case (1) are suitable for holding and supporting the objects (3) to be presented, wherein the back wall (4) a) is preferably detachably inserted and held in the surrounding frame (5), and b) has at least one suspension element (35) on its rear side, so that the entire weight of the display case (1) including its contents can be transferred to an external support element.

Description

[0001] The invention relates to a display case with a cavity for the visual presentation of 3D objects, comprising at least one opaque back wall surrounded by an equally opaque, one-piece, all-around frame that limits the circumference of the cavity, and a transparent, self-supporting front wall which completely closes the front opening of the frame at an all-round distance of at least 5 mm in front of the back wall and is held in the frame in such a way that it cannot be opened.

[0002] Due to the gap on all sides between the transparent front wall and the back wall, the front wall does not directly rest on the back wall anywhere, but maintains a cavity with a minimum thickness of 5 mm in between, in which three-dimensional objects (so-called 3D objects) can be accommodated and presented.

[0003] A display case of this type can be found, for example, in utility model DE 20 2016 106 517 U1. This design features a box open at the front, onto which a frame with a rearward-facing skirt can be fitted from the front, with the insertion of a transparent front panel. Preferably, the front panel is glued to the front edges of the open box, so that such a display case can no longer be opened without damage. To still allow for changing the contents, a continuous dust seal can be used instead of adhesive. Furthermore, the connection between the box and the fitted frame is achieved solely through friction during assembly.The disadvantage of this is that the front pane must be made of mineral, shatterproof glass, because the only way to release the box from the overlying frame is to apply manual pressure from the front to the glass front pane, thereby pushing the box backwards out of the frame.

[0004] The disadvantages of the described prior art result in the problem initiating the invention: to further develop a display case of the generic type in such a way that the display case is reusable for the presentation of changing objects, wherein the enclosed object(s) is / are inaccessible from the front, but can nevertheless be removed and / or replaced at any time by opening the back, without having to detach a front panel from the frame or the display case.

[0005] This problem is solved by ensuring that at least two inner sides of the display case are suitable for holding and carrying the objects to be presented, with the back wall being the a) is preferably detachably inserted and held in the surrounding frame, and b) has at least one suspension element on its rear side, so that the entire weight of the display case and its contents can be transferred to an external support element.

[0006] The present invention thus takes a very unusual approach: The display case is filled and emptied from its rear, which, however, is inaccessible during use but is concealed by a wall or the like, on which the display case is suspended for the presentation of the enclosed objects. The rear panel is therefore of central importance to the present invention, as it supports many or even all of the force-transmitting and / or adjustable elements. To create sufficient space for these elements on the back of the rear panel, the rear panel itself is inserted into the surrounding frame, preferably such that it is offset forward from the rear end face of the surrounding frame by a certain amount, for example, 1 mm or more, or preferably by a amount of 2 mm or more, and in particular by a amount of 3 mm or more.This creates a gap of a corresponding thickness between the wall surface and the back of the rear panel when the display case is hung against a wall. This gap provides sufficient space for the mechanical elements, i.e., the force-transmitting and / or adjustable elements, ensuring direct contact between the rear end face of the continuous frame and the wall surface. Therefore, the complex mechanics of the display case according to the invention are completely undetectable to the casual observer.

[0007] It is within the scope of the invention that, in addition to its function of supporting the entire display case and providing access to the enclosed cavity and the objects stored therein, the back panel can also fulfill a presentation function. Objects can be attached to the back panel, for example, by pinning them on, or the back panel can also serve as ornamentation or decoration. This latter function can be achieved, for example, by printing the front of the back panel facing the enclosed cavity or by providing it with other decorative elements such as trimmings, including decorative braids, ribbons, woven cords, braids, tassels, borders, fringed trims, flounces, lace, etc.

[0008] Preferably, the contact surface of the at least one suspension element for attachment to an external support element is located above the horizontal central plane, which penetrates the display case according to the invention at half its height and is equidistant from its top and bottom surfaces. This results in an extremely stable state when suspended from an external support element; the display case does not tend to tip sideways. Generally, a single suspension element on the vertical central plane is sufficient, which penetrates the display case according to the invention at half its width from top to bottom and is equidistant from its left and right outer surfaces. Alternatively, two suspension elements can be provided, arranged to the left and right of this vertical central plane, preferably at approximately equal distances from it.

[0009] Furthermore, the contact surface of at least one suspension element for hanging on an external support element can be designed to pivot or bend slightly away from the back of the rear panel, for example, to engage the nose of a hook or the head of a nail or screw. This makes the case extremely stable when hung on an external support element; the display case does not tend to slide forward off such a support element.

[0010] Furthermore, the invention recommends that the contact surface of the at least one suspension element for attachment to an external support element be arranged on the inside of an eyelet- or ring-shaped structure. Such a design, in turn, results in the contact surface according to the invention laterally encompassing the nose of a hook or the head of a nail or screw when attached. This makes the attachment to an external support element extremely stable; the display case does not tend to slip laterally off such a support element. However, such a ring-shaped structure does not need to be self-contained. It would also suffice for the suspension element to have the form of a U-shaped bracket, the two free ends of which are connected to the back wall of the display case at the two legs of the U, e.g., inserted into or through it and anchored to the back wall in this position.by means of nuts screwed onto threaded sections of the respective leg ends.

[0011] The invention can be further developed such that the suspension element is connected to the back wall of the display case by a positive fit, so that it can securely support the entire weight of the display case, which may be filled with one or more objects, and transfer it to an external support element. For this purpose, the suspension element according to the invention can have one or more pins – preferably in an area below the contact surface with an external support element – ​​which, like a rivet, can engage in or even through a specially provided opening in the back wall of the display case.

[0012] This technique of a suspension element on the back panel of the display case allows the display case according to the invention to be positioned at any desired location on a wall, provided that an external support element can be fixed there, for example, in the form of a driven nail or a screw or hook element fixed to a dowel. The external support element can also be concealed by the area of ​​the surrounding frame that projects beyond the back panel like an apron. This results in an aesthetically very appealing way of presenting at least one 3D object on any desired surface area of ​​a wall, whereby the actual object to be presented is protected from any unauthorized access, unlike, for example, when using a shelf.

[0013] Nevertheless, the display case can be opened at any time by its knowledgeable owner, for example, to replace the object being presented with another. This is made possible by at least one, preferably adjustable, locking element, which eliminates the need for friction between the back panel and the frame. Yet, the positive locking mechanism can be completely released by adjusting the locking elements. Instead, the back panel can be loosely inserted within the rear opening of the frame, so that it can be easily removed from the back at any time, for example, by tilting the frame backward, causing the detached back panel to fall out.

[0014] This relocation of the opening mechanism to the back panel allows the entire frame of the display case to be completely closed, meaning it has no slots for a key or similar fasteners. Such a hermetically sealed interior has the further advantage that the objects inside cannot accumulate dust and can therefore be stored for years without maintenance.

[0015] To completely seal the cavity dust-tight, continuous seals can be provided between the surrounding frame on the one hand and the front and / or rear wall on the other, e.g. in the form of inserted, continuous O-rings.

[0016] Easy storage is particularly important for delicate objects and also allows for further development, enabling the presentation of at least one 2D object alongside one or more 3D objects – or even as a substitute if necessary – such as a photo, a ticket, a greeting card, or one or more stamps. Images or text could even be attached directly to the front of the back panel, for example, printed on it.

[0017] For the long-term storage of paper objects such as stamps, specific lighting conditions can be important to minimize yellowing. This is particularly relevant with regard to the type of transparent material used for the front panel. Generally, all types of transparent materials are suitable, such as glass, acrylic glass, or other transparent organic materials or plastics, for example, polyvinyl chloride. However, to further prevent yellowing, the front of the display case could be coated with an ultraviolet-reflecting or -absorbing layer to block ultraviolet radiation from entering the case. Ultraviolet radiation is the primary cause of aging the visible surfaces of objects, especially the yellowing of paper.

[0018] To ensure that the displayed objects remain visible even in a darkened room, lighting can be provided for the display case, e.g. in the form of one or more light sources, such as lamps or LEDs, which can also be connected to each other and to a voltage source in the manner of a string of lights, preferably by means of an electrical parallel circuit, so that each light source is operated with the same electrical voltage.

[0019] Furthermore, it is possible to provide special lighting effects when using such lighting.

[0020] A simple lighting effect is, for example, the blinking of the light source(s), which can be achieved electronically by cyclically switching on and off or interrupting the circuit to the voltage source, in particular by a switching transistor triggered by an astable flip-flop or other electronic switching element.

[0021] While the light sources are preferably located within the cavity of the display case visible from the front, a voltage source, e.g. in the form of at least one battery or at least one switching or control element, can be arranged at the rear of the display case, in particular at the rear of the back wall, which is ideally raised from a wall surface by the all-around, skirt-like overhang of the all-around frame, so that sufficient space is created there for accommodating electrical and electronic energy storage devices as well as switching and / or control elements.

[0022] Furthermore, the option of changing the color can also be provided. This is particularly possible when using LEDs, whose light color can be varied, for example, via a control voltage. Preferably, several or all LEDs are controlled with the same control voltage to achieve a uniform light pattern.

[0023] Such a color variation can be brought about either automatically, for example by regularly changing the control voltage for the LEDs, e.g. by varying it in steps at time intervals, resulting in abrupt color changes, or by changing it continuously, resulting in a gradual color change; with a sufficiently slow variation, this color change is not perceived immediately, but only after a certain time, e.g. when a complete change from red to blue has taken place or the like.

[0024] On the other hand, color variations can also be achieved manually by the owner influencing the control electronics. This could, of course, be done using a potentiometer, or alternatively, using a small transmitter connected to the control electronics via a cable or radio or infrared coupling, for example, to transmit a control signal. A wireless connection is not perceptible from the outside and therefore does not impair the aesthetic appearance of the display case according to the invention.

[0025] Further features, details, advantages and effects based on the invention will become apparent from the attached claims, from the following description of a preferred embodiment of the invention, and from the drawing. The drawing shows: Fig. 1 a display case according to the invention in a perspective front view; Fig. 2 the display case from Fig. 1 in a rear view; Fig. 3. Remove the frame of the arrangement from the display case. Fig. 1 and Fig. 2 in a perspective view from a rear viewpoint; Fig. 4 the inner back wall detached from the display case, designed as a pinboard in a perspective view from the front; Fig. 5. The outer rear panel detached from the display case in a perspective view from behind, with the locking elements pivoted into a release position; and Fig. 6 an excerpt from the Fig. 5 in an enlarged view showing a bendable or extendable eyelet for hanging on a hook or nail and a locking element in its locking position.

[0026] All figures in the drawing show the same embodiment of a display case 1 according to the invention.

[0027] Preferably, the display case 1 has a prismatic or cuboid shape.

[0028] The display case 1 encloses a cavity 2 for the visual presentation of one or more objects 3, primarily 3D objects 3, in this example a toy figure in the form of a horse. This is an example of a 3D object, while a postcard, ticket, etc., could also serve as a 2D object.

[0029] The purpose of display case 1 is to protect the objects 3 to be presented from dust, splashes of water, and unauthorized access by third parties, and to store them securely. For this purpose, display case 1 completely surrounds the cavity 2.

[0030] The display case 1 comprises at least one preferably opaque back wall 4, which is surrounded by a one-piece, all-around and preferably also opaque frame 5, which limits the perimeter of the cavity 2, and a transparent, freely supporting front wall 6, which completely closes the front opening of the frame 5 at an all-round distance in front of the back wall 4 and is held in the frame 5 in such a way that it cannot be opened.

[0031] As can be further seen from the drawing, the back panel 4 is detachably inserted and held in the surrounding frame 5 and has one or more locking elements 7 with which it can be positively locked in the frame 5.

[0032] The transparent front wall 6 forms the window to the cavity 2 and allows viewing of the contained objects 3. To prevent unauthorized access to the enclosed objects 3, the front wall 6 is more or less immovably mounted in the area of ​​the front opening 8 of the frame 5, in particular by insertion into a groove 10 running around the inside 9 of the frame 5, set back from the opening 8 by a constant value of, for example, 2 to 10 mm.

[0033] The front wall 6 can be made of mineral glass or acrylic glass, possibly also colored, or possibly of another transparent, preferably organic material such as plastic, in particular polyvinyl chloride.

[0034] In contrast, the frame 5 consists of several, in this example four, wall elements 11, each of which consists of a profile mitered at both ends, preferably miter-cut. The individual wall elements 11 are preferably glued together at their butt joints.

[0035] The wall elements 11 may be lacquered and / or veneered or coated in any other way, at least in the area of ​​their visible surfaces.

[0036] Of course, the wall elements 11 can also be made of other materials such as plastic or metal. They could also be transparent, for example made of acrylic glass.

[0037] Preferably, all wall elements 11 consist of profiles 12 with identical cross-sections, which can, for example, be machined from a rectangular profile. Both on the front 13 and on the back 14 of a wall element 11, recesses are provided in the inner surface 9 to hold the front panel 6 and the back panel 4, respectively. While the recess on the front 13 has the form of a groove 10 on the inner surface 9, the recess on the back has the form of a groove 15 on the inner surface 9 to accommodate at least one insertable back panel element 4.

[0038] For this purpose, the boundary surfaces 16 parallel to the rear 14 of the frame 5 form a flat mounting surface for flush placement of a back wall element 4.

[0039] In contrast, the boundary surfaces 17 parallel to the inside 9 of the frame 5 form a frame-shaped support surface for guiding the positioning of a rear wall element 4.

[0040] In order to permanently fix the back wall 4 in the groove 15, a groove 18 is additionally provided in the boundary surfaces 17 of the groove 15 which are parallel to the inside 9 of the frame 5, into which the locking elements 7 can be pivoted.

[0041] In the present embodiment, the back wall 4 consists of two separate back wall elements, namely an inner back wall element 19 and an outer back wall element 20. The purpose of this division is to allow the two back wall elements 19, 20 to be designed independently of each other and thus more easily adapted for different applications.

[0042] In the Fig. Figure 4 shows an example of an inner back wall element 19. The visible front surface 21 of the back wall 4 or the inner back wall element 19, facing the cavity 2, can be covered, for example, by a textile fabric 22. Furthermore, the visible surface of the front surface 21 of the back wall 4 or the inner back wall element 19 could also be provided with an image or a film and / or decorated in the manner of a veneer and / or a visible cork surface, and / or also be decorated with trimmings.

[0043] Furthermore, it is possible that the visible front 21 of a possibly one-piece back wall 4 or of the inner back wall element 19 of a two- or multi-part back wall, facing the cavity 2, can be designed as a pinboard in order to be able to attach smaller and / or lighter objects to it, for example, by means of pins.

[0044] On the other hand, a load-bearing layer 24 may be present in the area of ​​the back 23 of the inner back wall element 19, e.g. made of wood, cardboard, plastic or metal.

[0045] In the illustrated embodiment, the inner wall element 19 has the form and function of a pinboard. For this purpose, a layer of soft material can be provided between the visible front 21 or the textile fabric 22 on the one hand and the back 23 or the supporting layer 24 on the other, in order to allow the easy insertion of pins or the like. Suitable soft materials include, for example, cork, cardboard, polystyrene, textile, felt, foam, cotton wool, etc.

[0046] In contrast to the inner wall element 19, the primary focus for the outer wall element 20 is on mechanical stability. Suitable materials for this purpose include plywood, particleboard, hard paper such as Pertinax, plastic, metal, and similar materials with low flexibility.

[0047] The locking elements 7 are located on the outer surface 25 of the outer wall element 20. To enable smooth and low-friction pivoting of the locking elements 7 relative to the outer wall element 20, the outer surface 25 can be provided with a smooth coating, e.g., by laminating a (smooth) film. This could be lacquered paper, a metal foil, or the like.

[0048] The two wall elements 19, 20 each have a base area which is adapted as precisely as possible to the rear opening 26 of the frame 5 in the area of ​​the groove 15, so that they can hardly move in this opening 26.

[0049] The inner back panel element 19 is fixed together with the outer back panel element 20. This is achieved by the locking elements 7, which are arranged near the edge 27 of the outer back panel element 20 and can be pivoted into the groove 18 in the boundary surface 17 of the recess 15 to prevent the back panel elements 19, 20 from falling out of the frame 5.

[0050] A locking element 7 is exemplified in Fig. 6 shown.

[0051] It comprises an element 28 that is adjustable relative to the outer rear wall element 20 and an element 29 that is immovable relative to the outer rear wall element 20.

[0052] In the example shown, the adjustable element 28 consists of a metal blank with an elongated shape, with one flat side of the same resting against the outside 25 of the outer rear wall element 20.

[0053] This element 28 is connected to the outer rear wall element 20 by the fixed element 29, which extends through both an opening in the adjustable element 28 and a corresponding opening in the outer rear wall element 20. To prevent the fixed element 29 from detaching from the two elements 20 and 28, it is preferably designed like an eyelet with a circumferential surface that is folded outwards at both ends. Because these folds encompass the edges of the aligned openings in the two elements 20 and 28 through which they pass, the eyelet-shaped connecting elements 29 cannot be detached.

[0054] Furthermore, in the adjustable element 28 of elongated shape, the opening for inserting the immovable element 29 is arranged in the area of ​​one of the two ends of the elongated element 28.

[0055] For example, an elongated element 28 can have a length of approximately 10 to 20 mm, preferably approximately 15 mm, and a width of approximately 3 to 8 mm, preferably approximately 5 mm. Furthermore, the two ends 30 are preferably rounded, for example with a diameter of the rounding that corresponds to the width of the elongated element 28.

[0056] In order to make it easy to grasp and manually adjust the elongated element 28, a double, double offset 31 can be provided in its middle area between the two ends 30, so that in a side view a hat profile results, e.g. with a cross-sectionally rectangular or trapezoidal central section with a roof 32, which is connected to the two brim-shaped sections 33 in the area of ​​the ends 30 via a (trapezoidal) flank element 34 each.

[0057] In the installed state, the two surfaces of the two rim sections 33 facing away from the roof-shaped central area 32 lie against the outer surface 25 of the outer rear wall element 20, while the roof-shaped central area 32 is raised from it to allow easier reaching, turning, or reaching behind, and thereby the adjustable element 28 between the Fig. 2 and Fig. 6 shown locking position and the one in Fig. to be able to swivel to the unlocking position shown in section 5.

[0058] Preferably the adjustable elements 28 and the fixed elements 29 are painted or provided with some other coating.

[0059] Furthermore, in the Fig. Figure 6 shows another eyelet-shaped suspension element 35, which is also fixed to the outside 25 of the outer rear wall element 20 and can be used to hang the display case on a hook, nail, or the like. Preferably, the suspension element 35 also consists of a sheet metal blank.

[0060] To prevent lateral displacement relative to a hook, nail or the like, a toothing 37 can be provided on the inside of the eyelet 36 of the suspension element 35.

[0061] Furthermore, the suspension element 35 has a tab-like extension 38 for attachment to the outer back panel element 20. This extension may, for example, have two cutouts 39, the sharp edges of which are folded back and can be pressed into the outer surface 25 of the outer back panel element 20.

[0062] Furthermore, at least one continuous, preferably circular, recess 40, 41 is provided in each of the two rear wall elements 19, 20. Depending on requirements, there may be zero, one, two, or more recesses 40, 41 in the rear wall 4 or in each rear wall element 19, 20.

[0063] The recess 41 in the outer back panel element 20 is preferably equal in area to or larger than the recess 40 in the inner back panel element 19 and is aligned with one of possibly several recesses 40 in the inner back panel element 19, so that, for example, a cable 42 can be threaded through the aligned recesses 40, 41. For this purpose, however, it is not necessary for the recess(s) 40, 41 to each be bounded by a circular circumference. It is also conceivable that, to allow a cable to pass through a corner of the back panel 4, the corner area there is punched out or cut away, resulting in, for example, a triangular recess. It would also be possible to punch out a groove-shaped recess in the area of ​​an edge of the back panel 4, open towards the edge of the respective back panel element 19, 20.

[0064] This opens up the possibility of providing lighting for the cavity 2, for example in the form of a string of lights 43 with several light sources 44 arranged on a common, e.g. two-core cable 42, e.g. in the form of light-emitting diodes.

[0065] The cable string 42 connects the string of lights 43 located in the cavity 2 to a voltage source 45 on the outside 25 of the outer rear wall element 20, wherein the voltage source 45 may preferably be designed as a battery or rechargeable battery.

[0066] In order to be able to switch the lighting on and off, a switching or control element 46 can be inserted between the cable string 42 and the voltage source 45, which allows the current flow in the cable string 42 and thus in the light chain 43 to be controlled.

[0067] Instead of a mechanical switching element 45, an electronic control 45 can be used which switches between different operating modes when a button 46 is pressed several times, e.g. ON, OFF, fast flashing, slow flashing, color change, etc.

[0068] Instead of providing one or more light sources within the cavity 2, such as the aforementioned string of lights 43, one or more openings could also be provided in the frame 5 to illuminate the cavity 2 by means of externally mounted lighting. Openings provided for this purpose in the frame 5 could optionally be completely open, allowing air circulation, or, for example, be closed by a transparent disc or other transparent body, e.g., made of glass, acrylic glass, or another transparent material such as an organic material or plastic, in particular polyvinyl chloride.

[0069] For mounting a light fixture outside the cavity 2, 5 fastening means could be provided on the frame, e.g. holes or cutouts for screws, etc. Reference symbol list 1 display case 2 cavities 3 objects 4 Back panel 5 frames 6 Front wall 7 locking elements 8 front opening 9 Inside 10 Nut 11 wall elements 12 Profile 13 Front 14 Back 15. Groove 16 Boundary area 17 Boundary area 18 Nut 19 inner back wall element 20 outer rear wall element 21 Front 22 Textile fabrics 23 Back 24 Base course 25 Outside 26 rear opening 27 Rand 28 adjustable elements 29 immovable element 30 End 31. Offset 32 Roof 33 brim 34 Flank element 35 suspension elements 36 eyelets 37 gear teeth 38 Tab-like extension 39 Punching 40 Exclusion 41 Exclusion 42 cables 43 string lights 44 Light source 45 Voltage source 46 Switching or control element 47 buttons QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2016 106 517 U1

[0003]

Claims

[1] Display case (1) with a cavity (2) for the visual presentation of 3D objects (3), comprising at least one opaque back wall (4) surrounded by a one-piece, continuous and preferably also opaque frame (5) that limits the perimeter of the cavity (2), and a transparent, self-supporting front wall (6) which completely closes the front opening of the frame (5) at a distance of at least 5 mm on all sides from the back wall (4) and is held in the frame (5) in such a way that it cannot be opened, characterized by , that at least two inner sides (9,19) of the display case (1) are suitable for holding and carrying the objects (3) to be presented, the back wall (4) a) is preferably detachably inserted and held in the surrounding frame (5), and b) has at least one suspension element (35) on its rear side, so that the entire weight of the display case (1) including its contents can be transferred to an external support element. [2] Display case (1) according to claim 1, characterized by , that the display case (1) has the shape of a prism or cuboid. [3] Display case (1) according to claim 1 or 2, characterized by , that the front wall (6) is made of glass or acrylic glass or of another transparent material, preferably of an organic transparent material, in particular of a transparent plastic such as polyvinyl chloride (PVC). [4] Display case (1) according to one of claims 1 to 3, characterized by that the front wall (6) is inseparably connected to the frame (5), preferably by being inserted into a circumferential groove (10) on the inside (9) of the frame (5). [5] Display case (1) according to any one of the preceding claims, characterized by, that the frame (5) is composed of several wall elements (11) that are mitered and preferably glued together. [6] Display case (1) according to claim 5, characterized by , that a wall element (11) consists of a profile (12), preferably a rectangular profile. [7] Display case (1) according to claim 6, characterized by , that the outside of the profile (12) is smooth and flat. [8] Display case (1) according to one of claims 6 or 7, characterized by , that the front face (13) of the profile (12) is wider than the rear face (14) of the profile (12). [9] Display case (1) according to one of claims 6 to 8, characterized by , that the profile (12) is divided into a front, wider section and a rear, thinner section. [10] Display case (1) according to claim 9, characterized bythat the width of the thinner section is between 1 / 2 and 4 / 5 times the width of the wider section, preferably between 2 / 3 and 3 / 4 times. [11] Display case (1) according to one of claims 9 or 10, characterized by , that the thinner section is formed by a notch (15) in the profile (12) in the area of ​​its rear end face (14). [12] Display case (1) according to claim 11, characterized by , that the height of the groove (15) in the area of ​​the thinner section is between 1 / 6 and 1 / 2 times the total height of the profile (12), preferably between 1 / 5 and 1 / 3 times. [13] Display case (1) according to one of claims 11 or 12, characterized by , that the recess (15) of the profile (12) is bounded by flat surfaces (16, 17) that are preferably orthogonal to each other. [14] Display case (1) according to any one of claims 9 to 13, characterized by, that the thicker section of the profile (12) has a groove (10) on its inside (9), preferably at a distance of 2 to 10 mm from the front end face (13) of the profile (12). [15] Display case (1) according to one of claims 9 to 14, characterized by , that the thinner section of the profile (12) has a groove (18) on its inside (9), preferably at a distance of 2 to 10 mm from the rear end face (14) of the profile (12). [16] Display case (1) according to any one of the preceding claims, characterized by , that the back wall (4) is divided into an inner back wall element (19) and an outer back wall element (20). [17] Display case (1) according to claim 16, characterized by , that the inner rear wall element (19) is replaceable. [18] Display case (1) according to one of claims 16 or 17, characterized by, that at least one inner back wall element (19) is designed as a pinboard, preferably with a soft layer of e.g. cork, fabric, textile, felt, foam or wadding and optionally a supporting layer (24) e.g. made of a firmer material such as wood, plywood or cardboard. [19] Display case (1) according to one of claims 16 to 18, characterized by , that at least one inner back wall element (19) is provided with at least one recess (40), for example with one or two openings, which may preferably be enclosed by (each) an eyelet, in particular in the area (each) of a corner of the inner back wall element (19). [20] Display case (1) according to one of claims 16 to 19, characterized by , that the outer rear wall element (20) is provided with at least one recess (41), preferably with one or two openings, in particular in the area (each) of a corner of the outer rear wall element (20). [21] Display case (1) according to one of claims 16 to 20, characterized by , that at least one recess (41) in the outer rear wall element (20) is aligned with at least one recess (40) in the inner rear wall element (19). [22] Display case (1) according to one of claims 16 to 21, characterized by , that the at least one recess (41) in the outer rear wall element (20) is larger than the at least one recess (40) in the inner rear wall element (19). [23] Display case (1) according to one of claims 16 to 22, characterized by , that the outer rear wall has on its outer side (25) at least one preferably bendable or extendable, eyelet-shaped suspension element (35) for hanging on a hook or on a nail or the like. [24] Display case (1) according to one of the preceding claims, characterized by that the rear wall (4) has at least one locking element (7) and can thus be positively locked in the frame (5). [25] Display case (1) according to any one of the preceding claims, characterized by that the rear wall (4), preferably the outer rear wall element (20), has at least one locking element (7) in the area of ​​one, two, three or all edges (27). [26] Display case (1) according to one of claims 24 or 25, characterized by , that the locking elements (7) are completely invisible from the front and outside. [27] Display case (1) according to one of claims 24 to 26, characterized by , that one, several or all locking elements (7) are arranged on the rear (25) of the outer rear wall element (20). [28] Display case (1) according to one of claims 24 to 27, characterized by , that one, several or all locking elements (7) extend parallel to the plane of the outer rear wall element (20). [29] Display case (1) according to one of claims 24 to 28, characterized by, that each locking element (7) has an element (28) which can be pivoted about an axis, the axis extending perpendicular to the plane of the outer rear wall element (20). [30] Display case (1) according to claim 29, characterized by , that each pivot axis is formed by an eyelet (29) which passes through both the adjustable element (28) and the outer rear wall element (20). [31] Display case (1) according to one of claims 24 to 30, characterized by , that each locking element (7) has an adjustable, single-armed lever (28) rotatable about the relevant pivot axis. [32] Display case (1) according to one of claims 29 to 31, characterized by , that each adjustable element (28) is designed as an elongated element with a planar shape. [33] Display case (1) according to claim 32, characterized bythat the two ends (30) of the adjustable, elongated locking element (28) are rounded, preferably with identical radii of curvature. [34] Display case (1) according to one of claims 32 or 33, characterized by , that the length of each adjustable locking element (28) is greater than the distance of the pivot axis (29) from the nearest edge (27) of the outer rear wall element (20). [35] Display case (1) according to one of claims 29 to 34, characterized by , that the length of each adjustable locking element (28) is less than the distance of the pivot axis (29) from the nearest edge (27) of the outer rear wall element (20) plus the thickness of the nearest wall element (11) of the frame (5) in the area of ​​its rear end face (14). [36] Display case (1) according to one of claims 29 to 35, characterized by, that each adjustable locking element (28) can be pivoted at least partially into a groove (18) provided for this purpose on the inside (9) of the nearest wall element (11) of the frame (5) in the area of ​​its rear end face (14). [37] Display case (1) according to one of claims 29 to 36, characterized by , that each adjustable locking element (28) is doubly offset from the plane of its cut, so that in a middle area (32) between the two ends (30) of the adjustable locking element (28) a bridge-like elevation is formed, which makes it easier to grip. [38] Display case (1) according to one of the preceding claims, characterized by , that the conditions for illuminating the cavity (2) are created, preferably in the form of at least one opening (40;41) in the inner and, if necessary, also in the outer rear wall element (19;20) for passing one or more power cables (42) through it. [39] Display case (1) according to any one of the preceding claims, characterized by , that the cavity (2) is provided to be illuminated by one or more light sources (44), e.g. light-emitting diodes, which can be connected to a voltage source (45) via one or more cables (42). [40] Display case (1) according to claim 39, characterized by , that several light sources (44) are combined to form a string of lights (43). [41] Display case (1) according to one of claims 39 or 40, characterized by that the voltage source (45) has at least one battery or at least one rechargeable battery. [42] Display case (1) according to one of claims 39 to 41, characterized by , that a switching and / or control unit (46) is provided between the voltage source (45) and one or more light sources (44). [43] Display case (1) according to claim 42, characterized by, that the control unit (46) is designed such that, in addition to an OFF and an ON state, at least one blinking mode can also be selected. [44] Display case (1) according to any one of the preceding claims, characterized by that the side walls formed by the frame (5) are completely closed.

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