EP3858637B1 - Folder for a menu and / or drinks list with a flat lighting module, holding device for the folder, manufacturing method for the lighting module - Google Patents

Description

Technical area

The invention relates to a folder with at least one holding means for holding at least one sheet of a menu and / or drinks menu parallel to a sheet plane and at least one flat light module arranged along the sheet plane.

The invention also relates to a system with a holding device for the folder and a manufacturing method for the light module.

State of the art

Folders are known from the prior art for holding menus and drinks cards, which are usually printed on sheets of paper, for protection, for mechanical stabilization and for the visual and haptic enhancement of the menus or drinks cards.

The lighting in restaurants and bars, especially for the elderly and / or visually impaired people, is often insufficient to be able to comfortably read menus or drinks cards there.

To solve the aforementioned problem, the patent describes US7494235B2 a menu card with self-luminous pages that contain, for example, electroluminescent layers that are supplied with energy via a battery or a cable for connection to a socket.

Also the patent application US2007223211A1 describes a folder according to the preamble of claim 1, namely a menu card with self-luminous pages which can comprise a flexible electroluminescent film. The film is supplied with energy by a battery that can be charged via connectors, solar cells or a motion charger.

The patent application DE102009017669A1 describes a printed product, in particular a book, with an electroluminescent element, which is preferably is attached to the outside of a cover of the printed product for advertising purposes or to identify the printed product. DE102009017669A1 thus does not address the problem of poor lighting on pages in a printed matter.

The patent application US20070115650A1 discloses a presentation folder with a light source and a battery as well as an induction coil for charging the battery.

The previously known folders for lighting menus or drinks cards require additional components such as an energy store, a charging device and control electronics to operate a lighting element, all of which have to be integrated into the folders, making the folders thick, unwieldy and complex to manufacture.

In addition, charging the energy store with the disclosed method or replacing the energy store in the often hectic operation of a restaurant or bar with typically weak lighting is too time-consuming and unreliable.

Technical task

The object of the invention is to create a folder that is simple and inexpensive to manufacture for holding and lighting a menu and / or drinks menu, which is easier and more convenient to use than known folders.

Technical solution

The subject matter of the present invention provides a folder according to claim 1 which solves the technical problem. The object is also achieved by a system according to claim 8 and a manufacturing method according to claim 10. Advantageous refinements result from the dependent claims.

Description of the types of execution

The invention relates to a folder with at least one holding means for holding at least one sheet of a menu and / or drinks menu parallel to a sheet plane and at least one flat light module arranged along the sheet plane for backlighting the sheet.

A “flat” light module within the meaning of the invention has a significantly larger extent along a light module plane than perpendicular to it.

In the simplest case, the at least one light module is cuboid with a width and a length perpendicular to it along the light module plane, which are each significantly greater than a height perpendicular to the light module plane. The length of the light module is, for example, from 15 cm to 45 cm, in particular from 20 cm to 30 cm. The width of the light module is, for example, from 10 cm to 30 cm, in particular from 15 cm to 25 cm. The thickness of the light module is, for example, from 0.5 mm to 5 cm, in particular from 1 mm to 1 cm. The dimensions mentioned have proven to be particularly advantageous for a complete illumination of the usual menus and drinks cards and a simple integration into the portfolio.

The holding means can, for example, be designed as in known folders for menus and / or drinks cards and / or comprise a protective cover, which is transparent at least in sections, for receiving the sheet.

The sheet can, for example, comprise a sheet of paper which is printed and / or written on one side on a front side of the sheet.

In the context of the invention, the term "folder" denotes both a folder that can be opened like a book to view a menu and / or drinks menu contained in the folder, as well as a folder in which the menu and / or drinks menu is so is kept so that it is visible without opening the folder.

The folder preferably comprises a plurality of, for example, two, three, four or more holding devices for holding at least one sheet in each case and in particular a plurality of, for example, two, three, four or more light modules for illuminating at least one sheet in each case.

The luminous module comprises at least one flat luminous layer arranged along a luminous module plane for backlighting the sheet, at least one flat energy storage layer arranged along the luminous module plane for storing electrical energy to supply the luminous layer and at least one flat induction layer arranged along the luminous module plane for inductive charging of the Energy storage layer.

With the help of the flat luminous layer, the sheet can be illuminated evenly in order to ensure good legibility. As a result of the integration of the energy storage layer and the induction layer in the light module, no other electronic components apart from the light module need to be in the folder to get integrated. As a result, the folder can be produced particularly easily and inexpensively and has only a slightly larger volume than an unlit folder, so that it can be used comfortably and stored in a space-saving manner.

The at least one luminous layer, the at least one energy storage layer and the at least one induction layer each comprise a plurality of material layers aligned along the luminous module plane and having different material compositions from one another.

By building up the layers from material layers aligned along the light module plane, the layers can be produced particularly easily, quickly and inexpensively, for example using a printing method, in particular using a screen printing method.

The material layers preferably each extend over an entire area of the light module along the light module plane. As a result, the material layers can be produced in a particularly simple manner.

A total thickness of the luminous layer perpendicular to the plane of the luminous module is preferably from 1 μm to 1 mm, in particular from 2 μm to 100 μm, for example from 5 μm to 30 μm.

The electrical luminous layer can comprise, for example, an electroluminescent layer and / or an OLED layer.

The electroluminescent layer comprises two electrically conductive material layers as electrodes, between which an electroluminescent material is arranged in an electrically insulated manner. At least one electrode is translucent and consists, for example, of indium tin oxide.

The electroluminescent material is, for example, zinc sulfide, a II-VI compound semiconductor that can be doped with various metals such as manganese, gold, silver, copper or gallium in order to generate different light colors. White light can be generated, for example, by superimposing differently doped materials.

The OLED layer comprises an anode layer, consisting for example of indium tin oxide, and an adjoining hole line layer. Between the anode layer and the hole line layer, a layer made of PEDOT / PSS can be arranged, which serves to lower the injection barrier for holes and the diffusion of Prevents indium in the transition. The hole line layer is followed by a dye layer which either contains an organic dye (for example 5 to 10 percent) or consists of the dye, e.g. B. from aluminum tris (8-hydroxyquinoline). This is optionally followed by an electron conduction layer. The end of the OLED layer is formed by a cathode layer consisting of a metal or an alloy with a low electron work function, such as calcium, aluminum, barium, ruthenium and / or a magnesium-silver alloy. The dye may, for example, comprise a derivative of poly (p-phenylene-vinyl).

It is particularly advantageous if the luminous layer is between 8.05 μm and 120 μm thick perpendicular to the plane of the luminous module, with the anode layer between 0.05 μm and 5 μm, the cathode layer between 4 μm and 45 μm, and the dye layer between 2 μm and 30 µm and the hole line layer is between 4 µm and 45 µm thick.

The induction layer preferably comprises at least one induction coil made of an electrically conductive material, in particular a metal or a metal alloy, and an electrically insulating sheathing of the induction coil. The sheathing comprises a plastic, for example. The induction layer preferably comprises a regulating device for regulating the induced current and / or the induced voltage.

Due to the inductive energy transfer, for example according to the Qi standard, the energy storage layer can be charged with energy without fixed cabling or plug connections. As a result, the energy storage layer, especially in hectic restaurant operations, can be charged particularly easily, quickly and without the risk of incorrect contacts or damage to connectors.

The energy storage layer preferably comprises at least two electrode layers, between at least one separator layer with an electrolyte and at least one encapsulation layer on each of the outer sides. The encapsulation layer is advantageously designed as an electrical insulation layer, for example made of a plastic.

If the energy storage layer is adjacent to a further layer which has an encapsulation layer on a side facing the energy storage layer, the energy storage layer can advantageously be applied to that of the further layer facing side be designed without an encapsulation layer. A particularly material-saving and rapid production is possible as a result.

At least one electrode layer preferably comprises carbon, in particular in the form of activated carbon, activated carbon fiber, carbide-derived carbon, carbon airgel, graphite, graphene and / or carbon nanotubes, a transition metal oxide, for example an oxide of ruthenium, iridium, iron and / or manganese, and / or an electrically conductive polymer, for example polypyrrole, polyaniline, pentacene or polythiophene.

The separator layer comprises, for example, a porous plastic. The electrolyte includes, for example, an aqueous electrolyte solution, an organic electrolyte solution, an ionic liquid, a super-concentrated electrolyte and / or an electrically conductive polymer.

The energy storage layer is preferably designed as a super capacitor.

A thickness perpendicular to the light module plane is advantageously 20 μm to 250 μm for the encapsulation layers, advantageously 3 μm to 250 μm for the electrode layers and / or advantageously 0.5 μm to 250 μm for the separator layer.

The at least one luminous layer, the at least one energy storage layer and the at least one induction layer are arranged one above the other perpendicular to the plane of the luminous module. As a result of this arrangement, the layers can be produced particularly easily and quickly using an additive process, for example by screen printing.

The at least one luminous layer is preferably arranged on a front side of the energy storage layer and the induction layer facing the at least one sheet. This allows the luminescent layer to illuminate the sheet unhindered.

The at least one energy storage layer is preferably arranged between the at least one luminous layer and the at least one induction layer. As a result, a particularly efficient energy transfer to the induction layer can take place from the rear side of the light module opposite the front side without shielding by the energy storage layer.

The folder preferably comprises at least one further holding means for holding at least one further sheet of the menu and / or drinks menu on a rear side of the light module facing away from the at least one sheet, the at least one energy storage layer and the at least one induction layer are arranged between two luminous layers and / or the at least one energy storage layer and the at least one induction layer are at least partially translucent. As a result of the configurations mentioned, the further sheet on the rear side of the light module can also be illuminated by the light module.

If the induction layer and / or the energy storage layer is translucent in areas, at least one area of the respective layer which is central along the light module level is preferably translucent. Non-translucent components of the layer, for example an induction coil, a control circuit and / or electrodes, can for example be arranged outside a translucent area, preferably outside the central area of the respective layer.

For the purposes of the invention, a translucent body is at least partially permeable to visible light, and a transparent body is transparent.

The folder preferably comprises at least one further holding means for holding at least one further sheet of the menu and / or drinks menu on a rear side of the light module facing away from the at least one sheet, the at least one light layer along the light module level next to or in the at least one energy storage layer and next to or in the at least one induction layer is arranged.

By means of the configurations mentioned, the further sheet on the rear side of the light module can also be illuminated by the light module without a second light layer being required or the energy storage layer and the induction layer having to be designed to be translucent. The disadvantage here, however, is that layers arranged next to one another or one inside the other are less easy to produce using an additive method, in particular a screen printing method, than layers arranged one above the other.

The at least one energy storage layer and the at least one induction layer can be arranged next to one another or one inside the other along the light module plane. This results in a particularly low height of the light module perpendicular to the light module plane, as a result of which the light module can be integrated into the folder in a particularly simple manner.

The folder preferably comprises at least one sensor for detecting an opened sheet of the menu and / or drinks menu and / or for Measurement of an ambient brightness of the folder and at least one control unit communicatively connected to the sensor and the at least one luminous layer for automatic control of a luminance of the luminous layer as a function of the opened sheet and / or the ambient brightness.

The sensor and the control unit allow the luminous layer to be operated in a particularly energy-efficient manner, for example by only illuminating an open page and / or activating the luminous layer only when the ambient brightness is insufficient for reading the menu and / or drinks menu. In addition, the automatic control allows a particularly convenient use of the folder.

The sensor and the control unit can be formed, for example, by a switch which automatically activates the luminous layer when a page is opened. Automatic activation is thereby achieved with particularly simple means.

The sensor can, for example, comprise a photovoltaic layer of the folder, the ambient brightness being able to be detected by the control unit by means of a current intensity and / or electrical voltage emitted by the photovoltaic layer. The sensor can comprise a photodiode, separate from the photovoltaic layer, for measuring the ambient brightness.

The at least one control unit can comprise, for example, an embedded computer system and / or a single-board computer. The communicative connection can be wired and / or wireless.

The at least one sensor and / or the at least one control unit can be arranged in and / or on the folder. The at least one control unit can be arranged at a distance from the folder and in particular integrated into a holding device for holding the folder.

The light module preferably comprises at least one carrier element which extends flatly along the light module plane and to which the at least one light layer, the at least one energy storage layer and the at least one induction layer are applied.

The layers can be applied on one side or on both sides of the surface sides of the carrier element. A one-sided application allows a particularly fast production. Application on both sides ensures particularly high mechanical stability due to the arrangement of the carrier element between the layers. For example, the luminous layer on a Surface side and an energy storage layer can be applied to the opposite surface side of the carrier element.

The carrier element comprises, for example, a plastic, in particular PET, a polyimide, PMMA and / or a polycarbonate, and / or a metal. The carrier element is advantageously designed to be rectangular, like usual sheets of menu cards and drinks cards. The carrier element is preferably designed in the form of a film and is flexible. As a result, the entire light module can be made thin and flexible, so that it can be integrated into the folder in a simple and space-saving manner. The carrier element comprises, for example, a plastic film and / or metal film with a thickness of 0.001 mm to 10 mm, in particular 0.1 mm to 5 mm. The carrier element comprises in particular a PMMA film with a thickness of 1 mm to 5 mm, for example 3 mm.

The carrier element advantageously gives the light module sufficient mechanical stability so that the light module is not damaged when it is installed in the portfolio or when the portfolio is used.

The light module preferably comprises at least one encapsulation layer to protect the at least one light layer, the at least one energy storage layer and the at least one induction layer from environmental influences, in particular from moisture and / or mechanical loads.

The encapsulation layer comprises, for example, a plastic, in particular PET, a polyimide, PMMA and / or a polycarbonate.

The carrier element and / or the encapsulation layer is preferably at least partially translucent, in particular transparent. This is particularly advantageous in order to be transparent to the light emitted by the at least one luminous layer.

The folder preferably comprises at least one flat photovoltaic layer arranged along the light module plane for supplying the at least one energy storage layer with electrical energy, the photovoltaic layer comprising a plurality of material layers arranged along the light module plane with different material compositions.

With the aid of the photovoltaic layer, the energy storage layer can advantageously also be charged without an external charging device. The photovoltaic layer can, in particular in a photovoltaic module with a carrier element and a Encapsulation layer, for example, be arranged on an outside of the folder, so that the photovoltaic layer can also absorb light when the folder is closed.

The photovoltaic layer is preferably designed as a low-light-condition solar module and / or as a thin-film solar module, comprising, for example, amorphous silicon (a-Si: H), microcrystalline silicon (µc-Si: H), gallium arsenide (GaAs), cadmium telluride ( CdTe) or copper-indium- (gallium) -sulphur-selenium compounds as photoactive material.

In a further advantageous embodiment, the photovoltaic layer comprises at least one translucent front electrode layer on top of each other perpendicular to the light module level and / or then indirectly or directly at least one support structure layer for mechanical stabilization and / or then indirectly or directly at least one photoactive layer with a photoactive material and / or then indirectly or directly at least one transport layer and / or then indirectly or directly at least one baking electrode layer and / or then indirectly or directly at least one encapsulation layer, with a voltage advantageously being able to be applied between the transparent front electrode layer and the baking electrode layer.

It is conceivable that the transport position and the support structure position are dispensed with. This is advantageous because a particularly thin embodiment is possible in this way. However, this is disadvantageous because the transport position has particularly good properties for maintaining the charge separation. In addition, it is conceivable that the photoactive material loses its effect without a stabilizing support structure layer. Glasses, PMMA, metal foils, plastic foils, for example, are conceivable for the carrier structure layer. For the transport situation, negative and positive designs from organic and / or inorganic substances are conceivable. Their job is to better transport the electrons.

The encapsulation layer is advantageously designed as an electrical insulation layer, for example made of a plastic. If the photovoltaic layer adjoins a further layer which has an encapsulation layer on a side facing the photovoltaic layer, the photovoltaic layer can advantageously be designed without an encapsulation layer on the side facing the further layer. A particularly material-saving and rapid production is possible as a result.

The encapsulation layer adjoining the baking electrode advantageously has a thickness between 500 nm and 250 μm. The baking electrode layer advantageously has a thickness between 100 nm and 15 μm. The transport layer advantageously has a thickness between 50 nm and 5 μm. The photoactive layer advantageously has a thickness between 50 nm and 5 μm. The carrier structure layer advantageously has a thickness between 100 nm and 5 μm. The front electrode layer advantageously has a thickness between 100 nm and 5 μn. The encapsulation layer adjoining the front electrode advantageously has a thickness between 20 μm and 250 μm.

The at least one photovoltaic layer can be integrated into the at least one light module, the photovoltaic layer preferably being arranged on a rear side of the light module facing away from the at least one sheet. As a result of the integration in the light module, the folder can be produced particularly easily and inexpensively. Due to the arrangement on the rear side, the luminous layer and the photovoltaic layer can emit or absorb light without being hindered by other layers in each case.

In a further advantageous embodiment, the photovoltaic layer is designed as an at least regionally translucent, in particular transparent, layer, in particular such that the at least one luminous layer follows the at least one photovoltaic layer directly from the front of the luminous module perpendicular to the luminous module plane. If the photovoltaic layer is designed to be translucent, it can be used as a permeable layer for the light of the luminous layer when the incident light decreases, for example at dusk.

It is conceivable that a through-contact between the photovoltaic layer and an energy storage layer through the lighting layer enables the electrical energy generated in the photovoltaic layer to be transferred to the energy storage layer. A further contact advantageously enables the energy stored in the energy storage layer to be released for supplying the luminous layer.

In a further advantageous embodiment, the at least one photovoltaic layer is opaque. This is particularly advantageous since photovoltaic layers that are not made transparent have a greater degree of efficiency than transparent photovoltaic layers.

The photovoltaic layer and the luminous layer can be arranged next to one another or inside one another along the luminous module plane, so that they do not interfere with one another when light is absorbed or light emitted perpendicular to the luminous module plane. The disadvantage here is that not the entire area of the light module is available for the photovoltaic layer and the light layer. It is advantageous that an energy storage layer can be arranged both adjacent to the photovoltaic layer and also adjacent to the luminous layer, which enables particularly efficient energy transport.

The at least one induction layer and / or energy storage layer is preferably at least partially translucent, in particular transparent. These configurations allow light from the luminous layer or photovoltaic layer to be absorbed or emitted through the energy storage layer and / or induction layer, so that the layer sequence can be optimized, for example, for the simplest possible production or efficient connection of the individual layers.

The invention relates to a system with a number, preferably with a multiplicity, of folders according to the invention and a holding device for holding at least one of the folders. The holding device preferably comprises at least one inductive transmission device for inductively charging the energy storage layer of the at least one lighting module of the at least one folder, the holding device being designed to hold the at least one folder so that at least one induction coil of the at least one induction layer of the at least one lighting module of the at least one folder is arranged coaxially to at least one induction coil of the at least one transmission device.

With the help of the holding device, the energy storage layer of the folder can be charged particularly easily, efficiently and reliably. The holding device comprises, for example, a shell and / or a frame, in which it can be stored that the induction coils are arranged coaxially to one another.

The at least one transmission device and / or the at least one induction layer preferably comprises a plurality of, for example two, three or four induction coils, so that regardless of an orientation of the folder relative to the holding device, at least one induction coil of the transmission device is coaxial with at least one induction coil of the induction layer is arranged.

The holding device preferably comprises a number, preferably a plurality, of receiving shafts at least for partially receiving a folder, each receiving shaft being designed to hold a folder in such a way that at least one induction coil of the at least one induction layer of the at least one light module of the respective folder is coaxial is arranged to at least one induction coil of the at least one transmission device.

In a receiving shaft, a folder can be stored particularly quickly, easily and reliably in a defined position and alignment with the holding device.

The invention relates to a system with a number, preferably with a multiplicity, of folders according to the invention and at least one holding device according to the invention. The folders and the holding device can be designed as described above, resulting in the advantages mentioned.

The invention relates to a method for producing the at least one light module of a folder according to the invention. The method includes providing a flat carrier element of the light module, wherein the carrier element can be configured in particular as described for the folder according to the invention

The method comprises screen printing the at least one luminous layer, the at least one energy storage layer, the at least one induction layer, preferably at least one photovoltaic layer and preferably at least one encapsulation layer of the luminous module on the carrier element, wherein the layers can be printed on one or both surface sides of the carrier element.

The layers can in particular be configured as described for the folder according to the invention. All layers of the light module are preferably produced by screen printing. In particular, electrical connections between the layers and / or within the layers of the light module that are necessary for operating the light module can also be produced by screen printing. Particularly preferably, the entire light module or the entire light module except for the carrier element is produced by screen printing.

In principle, the materials for producing the layers can be provided as pastes which are applied using a screen printing process. The advantage of the screen printing process is that the layers are very quick and easy can be applied inexpensively. Speeds of up to 400 m ² per hour are possible with an appropriate printing machine.

Brief description of the drawings

• Figur 1 zeigt eine schematische Ansicht einer erfindungsgemäßen Mappe.
• Figur 2 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene eines erfindungsgemäßen Leuchtmoduls.
• Figur 3 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene eines weiteren erfindungsgemäßen Leuchtmoduls.
• Figur 4 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Leuchtschicht eines erfindungsgemäßen Leuchtmoduls.
• Figur 5 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Induktionsschicht eines erfindungsgemäßen Leuchtmoduls.
• Figur 6 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Energiespeicherschicht eines erfindungsgemäßen Leuchtmoduls.
• Figur 7 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Photovoltaikschicht eines erfindungsgemäßen Leuchtmoduls.
• Figur 8 zeigt schematisch eine erfindungsgemäße Haltevorrichtung zur Halterung erfindungsgemäßer Mappen.

Further advantages, aims and properties of the invention are explained with reference to the following description and attached drawings, in which objects according to the invention are shown by way of example. Features which at least essentially correspond in terms of their function in the figures can be identified with the same reference symbols, although these features need not be numbered and explained in all figures.

• Figure 1 shows a schematic view of a folder according to the invention.
• Figure 2 shows a schematic sectional view perpendicular to the light module plane of a light module according to the invention.
• Figure 3 shows a schematic sectional illustration perpendicular to the light module plane of a further light module according to the invention.
• Figure 4 shows a schematic sectional illustration perpendicular to the light module plane of a light layer of a light module according to the invention.
• Figure 5 shows a schematic sectional illustration perpendicular to the light module plane of an induction layer of a light module according to the invention.
• Figure 6 shows a schematic sectional illustration perpendicular to the light module plane of an energy storage layer of a light module according to the invention.
• Figure 7 shows a schematic sectional illustration perpendicular to the light module plane of a photovoltaic layer of a light module according to the invention.
• Figure 8 shows schematically a holding device according to the invention for holding folders according to the invention.

Fig.1

Figure 1 shows a schematic view of a folder 300 according to the invention. The folder 300 comprises a number of, for example two, holding means 310, for example transparent protective covers, for holding a sheet B of a menu and / or drinks menu parallel to a sheet plane (along the plane of the drawing). In each case a flat light module 200 is arranged for backlighting the sheets B along the plane of the sheet. Details of the light modules 200 are not shown for the sake of clarity.

The illustrated folder 300 comprises a sensor 340, for example a photodiode, for measuring an ambient brightness of the folder 300 and at least one control unit 350 communicatively connected to the sensor 340 and the light modules 200, for example an embedded computer system, for automatically controlling a luminance of the light modules 200 the ambient brightness.

Fig. 2

Figure 2 shows a schematic sectional view perpendicular to the light module level LE of a light module 200 according to the invention for a folder 300 according to the invention. The light module 200 extends flat along a light module level LE and comprises an electrically light layer 210, for example an electroluminescent layer, an energy storage layer 220, which is configured, for example, as a super capacitor is, and an induction layer 230, in particular with at least one induction coil in an insulating sheath.

The luminous layer 210, the energy storage layer 220 and the induction layer 230 are arranged along the luminous module plane and each comprise a plurality of material layers (shown by hatching) aligned along the luminous module plane LE with different material compositions.

Electrical connections between the layers and / or within the layers of the light module 200 necessary for operating the light module 200 are not shown here and in the following figures for the sake of clarity.

The energy storage layer 230 is arranged, for example, between the luminous layer 210 and the induction layer 220.

Fig. 3

Figure 3 shows a schematic sectional illustration perpendicular to the light module plane LE of a further light module 200 according to the invention.

In addition to the layers of the light module 200 Figure 2 can do that in Figure 3 The light module 200 shown comprises the following layers:

The luminous module 200 shown comprises a further luminous layer 210A arranged along the luminous module level LE, the energy storage layer 230 and the induction layer 220 being arranged between the two luminous layers 210, 210A.

The illustrated light module 200 comprises a support element 260 which extends flat along the light module plane LE and to which the light layers 210, 210A, the induction layer 230 and the energy storage layer 220 are applied. The layers can be as in Figure 3 shown on one or both sides of the carrier element 260. The carrier element 260 comprises, for example, a film made of an at least translucent plastic. The carrier element 260 comprises in particular a PMMA film, for example with a thickness of 3 mm.

The illustrated luminous module 200 comprises an encapsulation layer 270, for example made of an at least translucent plastic, to protect the luminous layers 210, 210A, the induction layer 230 and the energy storage layer 220 from environmental influences.

Fig. 4

Figure 4 shows a schematic sectional illustration perpendicular to the light module level LE of a light layer 210, designed as an OLED, for example, of a light module 200 according to the invention, comprising a plurality of material layers aligned along the light module level LE with different material compositions.

The illustrated luminescent layer 210 comprises, for example, an anode layer 211 consisting, for example, of indium tin oxide, and an adjoining hole line layer 212. The hole line layer 212 is followed by a dye layer 213 which contains an organic dye. The end of the illustrated luminous layer 210 is formed by a cathode layer 214, consisting of a metal, such as calcium or barium, for example. The dye may, for example, comprise a derivative of poly (p-phenylene-vinyl).

Fig. 5

Figure 5 shows a schematic sectional view perpendicular to the light module plane LE of an induction layer 230 of a light module 200 according to the invention, comprising a plurality of material layers aligned along the light module plane LE with different material compositions.

The illustrated induction layer 230 comprises, for example, an induction coil 231, for example made of a metal, and an electrically insulating sheath 232, for example made of a plastic, at least perpendicular to the light module plane LE above and below the induction coil 231.

Fig. 6

Figure 6 shows a schematic sectional illustration perpendicular to the light module level LE of an energy storage layer 220 of a light module 200 according to the invention, comprising a plurality of material layers aligned along the light module level LE with different material compositions.

The energy storage layer 220, for example designed as a supercapacitor, comprises, for example, two electrode layers 222, in between a separator layer 221 with an electrolyte and on the outer sides an encapsulation layer 223 designed as an electrical insulator, for example made of a plastic.

The electrode layer 222 comprises, for example, carbon and / or an electrically conductive polymer. The encapsulation layers 223 comprise, for example, an electrically insulating plastic. The separator layer 221 comprises, for example, a porous plastic. The electrolyte includes, for example, an organic electrolyte solution.

Fig.7

Figure 7 shows a schematic sectional illustration perpendicular to the light module level LE of a photovoltaic layer 280 of a light module 200 according to the invention, comprising a plurality of material layers aligned along the light module level LE with different material compositions.

The photovoltaic layer 280 is designed, for example, as a thin-film solar cell, comprising, for example, microcrystalline silicon (μc-Si: H) as the photoactive material.

The photovoltaic layer 280 comprises, for example, perpendicular to the light module plane LE one above the other, a translucent front electrode layer 281 and then a photoactive layer 282 with the photoactive material and then a back electrode layer 283.

The termination of the photovoltaic layer 280 perpendicular to the light module level LE forms, for example, in each case an electrically insulating encapsulation layer 223, for example made of a plastic.

Fig. 8

Figure 8 shows schematically a holding device 100 according to the invention for holding folders 300 according to the invention. The holding device 100 shown comprises at least one inductive transmission device for inductive charging of the energy storage layer of the at least one light module of the folders 300.

a plurality of receiving shafts 140 (labeled only by way of example) at least for partially receiving a folder 300, each receiving shaft 140 being designed to hold a folder 300 in such a way that at least one induction coil 231 of the at least one induction layer 230 of the at least one light module 200 of the respective folder 300 is arranged coaxially to at least one induction coil 131 of the at least one transmission device 130.

The at least one induction coil 131 is arranged, for example, under a support surface 141 of a receiving shaft 140 for supporting the folder 300. In order to ensure close contact between the folder 300 and the support surface 141, which ensures efficient energy transfer between the induction coils 231, 131, and space-saving storage of the folders 300, the support surface 141 is preferably inclined relative to a vertical plane and relative to a horizontal plane. As a result, the folders 300 can also be particularly easily and quickly removed from the holding device 100 and inserted into it.

Alternatively, a plurality of receiving shafts 140 could also be arranged vertically one above the other with horizontal support surfaces 141 in the holding device 100, as in the case of a shelf system.

So that the induction coils 231 of the folders 300 can be arranged coaxially to the induction coils 131 of the holding device 100 independently of an orientation of the folders 300 relative to the holding device 100, the induction coils 231 of the folders 300 are preferably arranged centrally in the respective folders 300. <b> List of reference signs </b> 100 Holding device 230 Induction layer 131 Induction coil 231 Induction coil 140 Receiving slot 232 Sheathing 141 Support surface 260 Support element 200 Light module 270 Encapsulation layer 210 Luminescent layer 280 Photovoltaic layer 211 Anode layer 281 Front electrode layer 212 Hole line position 282 Photoactive layer 213 Dye layer 283 Baking electrode layer 214 Cathode layer 300 Folder 220 Energy storage layer 310 Holding means 221 Separator layer 340 sensor 222 Electrode position 350 Control unit 223 Encapsulation layer B. leaf LE Light module level

Claims (10)

1. Folder (300), comprising

   a. at least one holding means (310) for holding at least one sheet of a menu and / or drinks list parallel to a sheet plane and

   b. at least one flat light module (200) arranged along the sheet plane for backlighting the sheet,
   wherein the light module (200) comprises

   c. at least one flat luminous layer (210) arranged along a luminous module plane (LE) of the luminous module (200) for backlighting the sheet,

   d. at least one flat energy storage layer (220) arranged along the luminous module plane (LE) for storing electrical energy for supplying the luminous layer (210),
   characterized in that

   e. the folder (300) comprises at least one flat induction layer (230) arranged along the light module plane (LE) for inductive charging of the energy storage layer (220),

   f. wherein the at least one luminous layer (210), the at least one energy storage layer (220) and the at least one induction layer (230) each comprise a plurality of material layers aligned along the luminous module plane (LE) and having different material compositions,

   g. wherein the at least one luminous layer (210), the at least one energy storage layer (220) and the at least one induction layer (230) are arranged one above the other perpendicular to the luminous module plane (LE).
2. Folder (300) according to claim 1,
   characterized in that
   the at least one luminous layer (210) is arranged on a front side of the energy storage layer (220) and the induction layer (230) facing the at least one sheet, the at least one energy storage layer (220) preferably being arranged between the at least one luminous layer (210) and the at least one Induction layer (230).
3. Folder (300) according to claim 1 or 2,
   characterized by

   a. at least one further holding means (310) for holding at least one further sheet of the menu and / or drinks list on a rear side of the light module (200) facing away from the at least one sheet, wherein

   b. the at least one energy storage layer (220) and the at least one induction layer (230) are arranged between two luminous layers (210) and / or

   c. the at least one energy storage layer (220) and the at least one induction layer (230) are at least partially translucent.
4. Folder (300) according to one of claims 1 to 3,
   characterized by

   a. at least one sensor (340) for detecting an opened sheet of the menu and / or drinks list and / or for measuring the ambient brightness of the folder (300) and

   b. at least one control unit (350) communicatively connected to the sensor (340) and the at least one luminous layer (210) for the automatic control of a luminance of the luminous layer (210) depending on the opened sheet and / or the ambient brightness.
5. Folder (300) according to one of claims 1 to 4,
   characterized in that
   the light module (200)

   a. comprises at least one support element (260) extending flatly along the light module plane (LE) on which the at least one luminous layer (210), the at least one energy storage layer (220) and the at least one induction layer (230) are applied, and / or

   b. comprises at least one encapsulation layer (270) for protecting the at least one luminous layer (210), the at least one energy storage layer (220) and the at least one induction layer (230) from environmental influences,

   c. the carrier element (260) and / or the encapsulation layer (270) being at least partially translucent.
6. Folder (300) according to one of claims 1 to 5,
   characterized by
   at least one flat photovoltaic layer (280) arranged along the light module plane for supplying the at least one energy storage layer (220) with electrical energy, the photovoltaic layer (280) comprising a plurality of material layers with different material compositions arranged along the light module plane.
7. Folder (300) according to claim 6,
   characterized in that

   a. the at least one photovoltaic layer (280) is integrated into the at least one light module (200),

   b. wherein the photovoltaic layer (280) is preferably arranged on a rear side of the light module (200) facing away from the at least one sheet.
8. System comprising a number, preferably a plurality, of folders (300) according to one of the claims 1 to 7,
   characterized by

   a. a holding device (100) for holding at least one of the folders (300),

   b. wherein the holding device (100) comprises at least one inductive transmission device for inductive charging of the energy storage layer (220) of the at least one light module (200) of the at least one folder (300),

   c. wherein the holding device (100) is designed to hold the at least one folder (300) in such a way that at least one induction coil (231) of the at least one induction layer (230) of the at least one light module (200) of the at least one folder (300) is arranged coaxially to at least one induction coil (131) of the at least one transmission device.
9. System according to claim 8,
   characterized in that

   a. the holding device (100) comprises a number, preferably a plurality, of receiving bays (140), each receiving bay (140) being designed for at least partially receiving a folder (300),

   b. each receiving bay (140) being designed to hold a folder (300) in such a way that at least one induction coil of the at least one induction layer (230) of the at least one light module (200) of the respective folder (300) is arranged coaxially with at least one Induction coil of the at least one transmission device.
10. Method of manufacturing the at least one light module (200) of a folder (300) according to one of claims 1 to 7,
    characterized by the following steps

    a. providing a flat carrier element (260) of the light module (200) and

    b. screen printing of the at least one luminous layer (210), the at least one energy storage layer (220), the at least one induction layer (230), preferably at least one photovoltaic layer (280) and preferably at least one encapsulation layer (270) of the luminous module (200) on the carrier element (260).

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