DE102020102656B4 - Folder for a menu and/or drinks menu with a flat light module, holding device for the folder, manufacturing process for the folder - Google Patents

Abstract

Folder (300) with a) at least one holding means (310) for holding at least one sheet of a menu and/or drinks menu parallel to a sheet plane and b) at least one flat lighting module (200) arranged along the sheet plane for backlighting the sheet, wherein the lighting module ( 200)c) at least one flat luminous layer (210) arranged along a luminous module plane (LE) of the luminous module (200) for backlighting the sheet andd) at least one flat energy storage layer (220) arranged along the luminous module plane (LE) for storing electrical energy Supplying the luminescent layer (210), e) wherein the at least one luminous layer (210) and the at least one energy storage layer (220) are arranged one above the other perpendicular to the luminous module plane (LE), characterized in thatf) the at least one luminous layer (210) and the at least one energy storage layer (220) each comprises a plurality of material layers aligned along the light module plane (LE) with different material compositions, g) wherein the folder (300) has at least one further holding means (310) for holding at least one further sheet of the menu and/or Drinks menu on a rear side of the lighting module (200) facing away from the at least one sheet, wherein h) the at least one energy storage layer (220) is arranged between two lighting layers (210) and / ori) the at least one energy storage layer (220) is at least partially translucent.

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 holding device for the folder and a manufacturing method for the folder.

State of the art

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

The lighting in restaurants and bars is often not sufficient, especially for older and/or visually impaired people, to be able to read menus or drink menus comfortably.

The patent specification describes how to solve the aforementioned problem US 7,494,235 B2 a menu card with self-illuminating pages that contain, for example, electroluminescent layers that are powered by a battery or a cable that connects to a power outlet.

Also the patent application US 2007/0 223 211 A1 describes a menu card with self-illuminating pages that can include a flexible electroluminescent film. The film is powered by a battery that can be charged via connectors, solar cells or a motion charger.

The patent application DE10 2009 017 669 A1 describes a printed product, in particular a book, with an electroluminescent element, which is preferably attached to the outside of a cover of the printed product for advertising purposes or to identify the printed product. DE 10 2009 017 669 A1 does not address the problem of poor lighting on pages in a printed product. The patent application US 2007/0 115 650A1 shows a presentation folder with a light source and a battery as well as an induction coil for charging the battery. The journal article “Issues and challenges facing rechargeable lithium batteries” ( Tarascon, JM., Armand, M., Nature 414, 359-367 (2001) , doi: 10.1038/35104644) and “Integration of screen-printed electroluminescent matrix displays in smart textile items - Implementation and evaluation” ( A. Ivanov and M. Wurzer, 2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition, Warsaw, Poland, 2017, pp. 1-6 , doi: 10.23919/EMPC.2017.8346873) describe thin-film batteries and luminous layers produced by screen printing. The publication US 2002/0 093 814 A1 shows a notice board with a light module and a photovoltaic module to supply the light module with energy.

The previously known folders for illuminating menus or beverage cards require additional components to operate a lighting element, such as an energy storage device, a charging device and control electronics, all of which have to be integrated into the folders, which means that the folders are thick, unwieldy and complex to produce.

In addition, charging the energy storage using the disclosed methods or replacing the energy storage 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 can be produced easily and inexpensively for holding and illuminating a menu and/or drinks menu, which is easier and more comfortable 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 holding device according to claim 8 and a manufacturing method according to claim 11. Advantageous refinements result from the dependent claims.

Description of execution types

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 lighting module arranged along the sheet plane for backlighting the sheet.

A “flat” lighting module in the sense of the invention has a significantly greater extent along a lighting module plane than perpendicular to it.

In the simplest case, the at least one lighting module is cuboid with a width and a length perpendicular thereto along the lighting module plane, which are each significantly larger than a height perpendicular to the lighting module plane. The length of the lighting module is, for example, from 15 cm to 45 cm, in particular from 20 cm to 30 cm. The width of the lighting module is, for example, from 10 cm to 30 cm, in particular from 15 cm to 25 cm. The thickness of the lighting 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 fully illuminating standard menus and drink menus and for easy integration into the folder.

The holding means can, for example, be designed as in known folders for menus and/or drinks menus and/or comprise an at least partially transparent protective cover for holding the sheet.

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

For the purposes of the invention, the term “folder” refers to both a folder that can be opened like a book in order 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 displayed in this way ensured 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 lighting modules for illuminating at least one sheet in each case.

The lighting module preferably comprises at least one flat luminous layer arranged along a luminous module level of the luminous module for backlighting the sheet and at least one flat energy storage layer arranged along the luminous module level for storing electrical energy to supply the luminous layer and preferably at least one flat induction layer arranged along the luminous module level for inductive Charging the energy storage layer.

With the help of the flat luminescent layer, the sheet can be illuminated evenly to ensure good legibility. By integrating the energy storage layer and/or the induction layer in the lighting module, no other electronic components need to be integrated into the folder apart from the lighting module. This means that the folder can be produced particularly easily and cost-effectively 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 preferably the at least one induction layer each comprise a plurality of material layers aligned along the luminous module plane with material compositions that differ from one another.

By constructing the layers from material layers aligned along the light module plane, the layers can be produced particularly easily, quickly and cost-effectively, for example using a printing process, in particular using a screen printing process.

Preferably, the material layers each extend over an entire surface of the lighting module along the lighting module plane. This allows the material layers to be produced in a particularly simple manner.

A total thickness of the luminous layer perpendicular to the luminous module plane 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, for example, comprise 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 to produce different colors of light. White light can be generated, for example, by overlaying differently doped materials.

The OLED layer comprises an anode layer, consisting for example of indium-tin oxide, and an adjoining hole line layer. A layer of PEDOT/PSS can be arranged between the anode layer and the hole line layer to lower the injection barrier for holes serves and prevents the diffusion of indium into 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 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 luminescent layer is between 8.05 µm and 120 µm thick perpendicular to the luminous module plane, with the anode layer preferably between 0.05 µm and 5 µm, the cathode layer between 4 µm and 45 µm, 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 casing of the induction coil. The casing includes, for example, a plastic. The induction layer preferably comprises a control device for regulating the induced current and/or the induced voltage.

Through inductive energy transfer, for example according to the Qi standard, the energy storage layer can be charged with energy without fixed wiring or plug-in connections. This means that the energy storage layer can be charged particularly easily, quickly and without the risk of incorrect contacts or damage to connectors, especially in hectic restaurant operations.

The energy storage layer preferably comprises at least two electrode layers, at least one separator layer with an electrolyte between them 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 adjoins a further layer which has an encapsulation layer on a side facing the energy storage layer, the energy storage layer can advantageously be designed without an encapsulation layer on the side facing the further layer. This enables particularly material-saving and quick production.

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 superconcentrated electrolyte and/or an electrically conductive polymer.

The energy storage layer is preferably designed as a supercapacitor.

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 preferably the at least one induction layer are arranged one above the other perpendicular to the luminous module plane. This arrangement allows the layers to be produced particularly easily and quickly using an additive process, for example by screen printing.

The at least one luminescent layer is preferably arranged on a front side of the energy storage layer and the induction layer that faces 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 back of the lighting module opposite the front without shielding by the energy storage layer.

The folder 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 lighting module facing away from the at least one sheet, wherein the at least one energy storage layer and the at least one induction layer are arranged between two lighting layers and/or the at least an energy storage layer and the at least one induction layer is at least partially translucent are. As a result of the configurations mentioned, the additional sheet on the back of the lighting module can also be illuminated by the lighting module.

If the induction layer and/or the energy storage layer is translucent in some areas, at least one central region of the respective layer along the light module plane is preferably translucent. Non-translucent components of the layer, for example an induction coil, a control circuit and/or electrodes, can be arranged, for example, 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 transparent 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 lighting module facing away from the at least one sheet, wherein the at least one lighting layer along the lighting 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.

As a result of the configurations mentioned, the further sheet on the back of the lighting module can also be illuminated by the lighting module without the need for a second lighting layer or without the energy storage layer and the induction layer having to be designed to be translucent. The disadvantage, however, is that layers arranged next to one another or one inside the other are less easy to produce using an additive process, in particular a screen printing process, 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 level. This results in a particularly low height of the lighting module perpendicular to the lighting module level, which means that the lighting module can be integrated particularly easily into the folder.

The folder preferably comprises at least one sensor for detecting an open sheet of the menu and/or drinks menu and/or for measuring 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 automatically controlling a luminance of the luminous layer depending on the opened page and/or the ambient brightness.

Through the sensor and the control unit, the luminous layer can be operated in a particularly energy-efficient manner, for example by only illuminating an open sheet and/or the luminescent layer is only activated when the ambient brightness is not sufficient to read the menu and/or drinks menu. In addition, the automatic control allows the folder to be used particularly conveniently.

The sensor and the control unit can, for example, be formed by a switch that automatically activates the luminous layer when a sheet is opened. This results in automatic activation using particularly simple means.

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

The at least one control unit can include, for example, an embedded computer system and/or a single-board computer. The communicative connection can be designed to 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 away from the folder and in particular integrated into a holding device for holding the folder.

The lighting module preferably comprises at least one carrier element extending flatly along the lighting module plane, onto which the at least one luminous layer, the at least one energy storage layer and the at least one induction layer are applied.

The layers can be applied to one or both sides of the surface of the carrier element. One-sided application allows particularly quick production. Application on both sides ensures particularly high mechanical stability due to the arrangement of the carrier element between the layers. For example, the luminescent layer can be applied on one surface side and an energy storage layer on 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. Advantageously, the carrier element is rectangular like usual sheets of menus and drinks menus. The carrier element is preferably designed to be film-like and flexible. This means that the entire lighting module can be made thin and flexible, so that it can be easily integrated into the folder in a 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 in particular comprises a PMMA film with a thickness of 1 mm to 5 mm, for example 3 mm.

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

The lighting module preferably comprises at least one encapsulation layer to protect the at least one lighting 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 stress.

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 level 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 level with different material compositions.

With the help of the photovoltaic layer, the energy storage layer can advantageously be charged without an external charging device. The photovoltaic layer can, in particular in a photovoltaic module with a carrier element and an encapsulation layer, be arranged, for example, on an outside of the folder, so that the photovoltaic layer can absorb light even 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)-sulfur-selenium compounds as photoactive material.

In a further advantageous embodiment, the photovoltaic layer comprises, perpendicular to the light module plane, one above the other at least one translucent front electrode layer and/or thereafter indirectly or directly at least one support structure layer for mechanical stabilization and/or thereafter indirectly or directly at least one photoactive layer with a photoactive material and/or thereafter indirectly or directly at least one transport layer and/or then indirectly or directly at least one back electrode layer and/or then indirectly or directly at least one encapsulation layer, wherein a voltage can advantageously be applied between the transparent front electrode layer and the back electrode layer.

It is conceivable that the transport layer and the support structure layer 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 charge separation. It is also conceivable that the photoactive material loses its effect without a stabilizing support structure layer. For example, glasses, PMMA, metal foils, plastic foils are conceivable for the carrier structure layer. Negative and positive formations made of organic and/or inorganic substances are conceivable for the transport situation. Their job is to transport electrons better.

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. This enables particularly material-saving and quick production.

The encapsulation layer adjacent to 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 support 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 adjacent to 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 lighting module, with the photovoltaic layer preferably being arranged on a rear side of the lighting module facing away from the at least one sheet. By integrating it into the light module, the folder can be produced particularly easily and cost-effectively. Due to the arrangement on the back, the luminous layer and the photovoltaic layer can emit or absorb light without being hindered by other layers.

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

It is conceivable that a through-connection between the photovoltaic layer and an energy storage layer through the illumination layer enables the electrical energy generated in the photovoltaic layer to be transferred into the energy storage layer. Further contacting advantageously enables the energy stored in the energy storage layer to be released to supply the luminescent layer.

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

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

Preferably, the at least one induction layer and/or energy storage layer is at least partially translucent, in particular transparent. Through these configurations, light can be absorbed or emitted from the luminescent layer or photovoltaic layer 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 holding device for holding at least one folder according to the invention. 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, wherein the holding device is designed to hold the at least one folder in such a way that at least one induction coil of the at least one induction layer of the at least one lighting module 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 the induction coils can be placed coaxially with one another.

Preferably, the at least one transmission device and/or the at least one induction layer 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 for at least partially holding one folder, each receiving shaft being designed to hold one 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 to at least one induction coil of the at least one transmission device is arranged.

A folder can be stored particularly quickly, easily and reliably in a storage slot defined position and orientation to the holding device.

The invention relates to a system with a number, preferably with a large number, 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, which results in the advantages mentioned.

The invention relates to a method for producing a folder according to the invention. The method includes providing a flat carrier element of the lighting module, wherein the carrier element can be designed in particular as described for the folder according to the invention

The method includes 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 onto 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 designed as described for the folder according to the invention. All layers of the lighting module are preferably produced by screen printing. In particular, electrical connections necessary for the operation of the lighting module can also be produced between the layers and/or within the layers of the lighting module by screen printing. Particularly preferably, the entire lighting module or the entire lighting 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 can be applied very quickly and inexpensively. Speeds of up to 400 m ² per hour are possible with an appropriate printing machine.

Brief description of the drawings

• 1 zeigt eine schematische Ansicht einer erfindungsgemäßen Mappe.
• 2 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene eines erfindungsgemäßen Leuchtmoduls.
• 3 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene eines weiteren erfindungsgemäßen Leuchtmoduls.
• 4 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Leuchtschicht eines erfindungsgemäßen Leuchtmoduls.
• 5 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Induktionsschicht eines erfindungsgemäßen Leuchtmoduls.
• 6 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Energiespeicherschicht eines erfindungsgemäßen Leuchtmoduls.
• 7 zeigt eine schematische Schnittdarstellung senkrecht zur Leuchtmodulebene einer Photovoltaikschicht eines erfindungsgemäßen Leuchtmoduls.
• 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 the accompanying drawings, in which objects according to the invention are shown as examples. Features that at least essentially match in terms of their function in the figures can be marked with the same reference numerals, although these features do not have to be numbered and explained in all figures.

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

Fig.1

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 one sheet B of a menu and / or drinks menu parallel to a sheet plane (along the drawing plane). A flat lighting module 200 is arranged along the sheet plane for backlighting the sheets B. 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, for example an embedded computer system, which is communicatively connected to the sensor 340 and the lighting modules 200, for automatically controlling a luminance of the lighting modules 200 from the ambient brightness.

Fig.2

2 shows a schematic sectional view perpendicular to the light module plane LE of a light module 200 according to the invention for a folder 300 according to the invention. The light module 200 extends flatly along a light module plane LE and includes an electrically light layer 210, for example an electroluminescence layer, an energy storage layer 220, which is designed, for example, as a supercapacitor is, and an induction layer 230, in particular with at least one induction coil in an insulating jacket.

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 aligned along the luminous module plane LE (represented by hatching) with different material compositions.

Electrical connections between the layers and/or within the layers of the lighting module 200 necessary for the operation of the lighting module 200 are not shown here or 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

3 shows a schematic sectional view perpendicular to the lighting module plane LE of a further lighting module 200 according to the invention.

In addition to the layers of the lighting module 200 2 can do that in 3 Lighting module 200 shown includes the following layers:

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

The light module 200 shown comprises a support element 260 which extends flatly 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 3 shown can be applied to one side 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 in particular comprises a PMMA film, for example with a thickness of 3 mm.

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

Fig.4

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

The luminous layer 210 shown 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 luminous layer 210 shown is formed by a cathode layer 214, consisting of a metal, such as calcium or barium. The dye may, for example, comprise a derivative of poly(p-phenylene-vinyl).

Fig.5

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 several material layers aligned along the light module plane LE with different material compositions.

The induction layer 230 shown comprises, for example, an induction coil 231, for example made of a metal, and an electrically insulating casing 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

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

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

The electrode layer 222 includes, for example, carbon and/or an electrically conductive polymer. The encapsulation layers 223 include, 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

7 shows a schematic sectional view perpendicular to the light module plane LE of a photovoltaic layer 280 of a light module 200 according to the invention, comprising several material layers aligned along the light module plane 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 a photoactive material.

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

The end of the photovoltaic layer 280 perpendicular to the light module level LE, for example, is formed by an electrically insulating encapsulation layer 223, for example made of a plastic.

Fig.8

8th schematically shows 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 inductively charging the energy storage layer of the at least one light module of the folders 300.

a plurality of receiving shafts 140 (labeled only as an example) for at least partially accommodating one folder 300, each receiving shaft 140 being designed to hold 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 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 a 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 removed from the holding device 100 particularly easily and quickly and inserted therein.

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

So that the induction coils 231 of the folders 300 can be arranged coaxially with the induction coils 131 of the holding device 100, regardless 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.

List of reference symbols

100

Holding device

131

induction coil

140

receiving shaft

141

Support surface

200

Light module

210

Luminous layer

211

anode location

212

Hole line layer

213

Dye layer

214

cathode layer

220

Energy storage layer

221

Separator layer

222

Electrode location

223

Encapsulation layer

230

induction layer

231

induction coil

232

Sheathing

260

Support element

270

Encapsulation layer

280

Photovoltaic layer

281

Front electrode location

282

Photoactive layer

283

Baking electrode layer

300

folder

310

Holding means

340

sensor

350

Control unit

b

Sheet

LE

Light module level

Claims (11)

Folder (300) with a) at least one holding means (310) for holding at least one sheet of a menu and/or drinks menu parallel to a sheet plane and b) at least one flat lighting module (200) arranged along the sheet plane for backlighting the sheet, wherein the Light module (200) c) at least one flat luminous layer (210) arranged along a light module level (LE) of the light module (200) for backlighting the sheet and d) at least one flat energy storage layer (220) arranged along the light module level (LE) for storage electrical energy for supplying the luminescent layer (210), e) wherein the at least one luminescent layer (210) and the at least one energy storage layer (220) are arranged one above the other perpendicular to the luminous module plane (LE), characterized in that f) the at least one luminescent layer ( 210) and the at least one energy storage layer (220) each comprise a plurality of material layers aligned along the light module plane (LE) with different material compositions, g) wherein the folder (300) has at least one further holding means (310) for holding at least one further sheet of the Menu and/or drinks menu on a rear side of the lighting module (200) facing away from the at least one sheet, wherein h) the at least one energy storage layer (220) is arranged between two lighting layers (210) and/or i) the at least one energy storage layer (220) is at least partially translucent. folder (300). Claim 1 , characterized in that a) the lighting module (200) comprises at least one flat induction layer (230) arranged along the lighting module plane (LE) for inductively charging the energy storage layer (220), b) wherein the at least one induction layer (230) comprises a plurality of material layers aligned along the light module plane (LE) with different material compositions, and c) wherein the at least one light 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 light module plane (LE). . folder (300). Claim 2 , characterized in that the at least one luminescent 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, wherein the at least one energy storage layer (220) is preferably between the at least one luminous layer (210 ) and the at least one induction layer (230) is arranged. Folder (300) according to one of the Claims 1 until 3 , characterized by a) at least one sensor (340) for detecting an opened sheet of the menu and/or drinks menu and/or for measuring an ambient brightness of the folder (300) and b) at least one with the sensor (340) and the at least one luminous layer (210) communicatively connected control unit (350) for automatically controlling a luminance of the luminescent layer (210) depending on the opened sheet and/or the ambient brightness. Folder (300) according to one of the Claims 1 until 4 , characterized in that the lighting module (200) a) comprises at least one support element (260) extending flatly along the lighting module plane (LE), on which the at least one lighting layer (210), the at least one energy storage layer (220) and the at least one Induction layer (230) are applied, and / or b) at least one encapsulation layer (270) for protecting the at least one luminous layer (210), which comprises at least one energy storage layer (220) and the at least one induction layer (230) from environmental influences, c) where the carrier element (260) and/or the encapsulation layer (270) is at least partially translucent. Folder (300) according to one of the Claims 1 until 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) being a A plurality of material layers arranged along the light module level with different material compositions. folder (300). Claim 6 , characterized in that a) the at least one photovoltaic layer (280) is integrated into the at least one lighting module (200), b) wherein the photovoltaic layer (280) is preferably arranged on a rear side of the lighting module (200) facing away from the at least one sheet. Holding device (100) for holding at least one folder (300) according to one of Claims 1 until 7 , characterized by a) at least one inductive transmission device for inductively charging the energy storage layer (220) of the at least one light module (200) of the at least one folder (300), b) wherein the holding device (100) is designed to hold the at least one folder (300 ) to be kept so that at least one induction coil (231) of the at least one induction layer (230) of the at least one lighting 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. Holding device (100). Claim 8 , characterized by a) a number, preferably a plurality, of receiving shafts (140) for at least partially holding one folder (300), b) each receiving shaft (140) being designed to hold one 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 lighting module (200) of the respective folder (300) is arranged coaxially to at least one induction coil of the at least one transmission device. System with a number, preferably with a large number, of folders (300), according to one of the Claims 1 until 7 and at least one holding device (100) according to one of Claims 8 until 9 . Method for producing a folder (300) according to one of Claims 1 until 7 , characterized by the following steps a) providing a flat support element (260) of the lighting module (200) and b) screen printing the at least one lighting layer (210), the at least one energy storage layer (220), preferably at least one induction layer (230), preferably at least one Photovoltaic layer (280) and preferably at least one encapsulation layer (270) of the lighting module (200) on the carrier element (260).

Images