WO2015173452A1

WO2015173452A1 - Device and method for displaying products for vending machines

Info

Publication number: WO2015173452A1
Application number: PCT/ES2015/070366
Authority: WO
Inventors: Antonio Torres Lopez
Original assignee: Muxunav, S.L.
Priority date: 2014-05-16
Filing date: 2015-05-06
Publication date: 2015-11-19
Also published as: ES1118130U; ES1118130Y

Abstract

The invention relates to a device (1) and a method for displaying products for a vending machine, comprising at least one luminescent element (4) powered with the energy extracted from a power supply connection (5) connected to the vending machine itself. To this end, it comprises an electronic controller (8) that manages the extraction and transmission of electrical energy between the different components, and means for limiting energy consumption, which maintain the electrical energy extracted from the vending machine below a first threshold lower than, or equal to, 180 mA. In this way, the correct operation of both the device (1) and the vending machine supplying the device is guaranteed at all times.

Description

DEVICE AND METHOD OF PRESENTATION OF PRODUCTS FOR EXPENDING MACHINES

DESCRIPTION

Object of the invention

The present invention relates to the field of electricity and electronics, and more specifically to a device and method for presenting products for vending machines through luminescent elements.

Background of the invention

At present, there are numerous vending machines dedicated to the automated sale of various products such as tobacco, soft drinks, snacks, etc. To capture the attention of the public and facilitate the use of the machines, different types of devices are frequently used that attempt to present clearly and attractively the products they offer. These devices range from basic labels with the product logo to more elaborate elements with different illuminations or even with integrated screens that show promotional videos and other audiovisual content.

For example, JP 2007/172090 presents identifying labels for vending machines that adhere to a transparent surface of the machine, between the products offered and the display panel. The labels include luminescent elements that illuminate them, as well as transparent regions that allow the subsequent product to be observed. However, these types of adherent labels have the disadvantage of being difficult to change due to a deterioration of the label, a change of the product offered in that position, or a change in the design of the text and / or the images of said label. Additionally, it is necessary to control the energy supply of the luminescent elements, and may require additional power outlets and increase the total consumption of the vending machine.

WO 2014/053684 A1 proposes a strategy to overcome the problem of supply of the luminescent elements, according to which, a power cable connected to an outlet inside the vending machine itself is used to feed said luminescent elements. In particular, the luminescent elements are labels adapted in size and shape to the usual keypads of tobacco vending machines. The device's connection system, as well as the structure of each label, allow for easy exchange of said labels, and to install them both in vending machines already in operation, and in new equipment. However, depending on the number of labels and the mode of operation, the presented multi-connection device may require a higher energy consumption than the vending machine can provide.

In that case, the functionalities of the multi-connection device, as well as the vending machine itself, could be compromised.

Other variations on the same strategy, such as the one presented in ES 1, 094,562 U include the use of light emitting diode (LED) in a similar multi-connection device. In another example, ES 1, 103,855 U adds additional functionalities to the multi-connection system through an internet connection integrated in the device itself. The system has graphene, organic light emitting diode (OLED) or similar displays, capable of displaying animations, signage, surfing the internet or intranet, or tuning and broadcasting audiovisual content. The screens can be located both in the buttons of the vending machine and in side panels, and may additionally include touch screens or other interfaces to allow the user to enter commands in the system. Again, the supply of all the elements that make up these solutions could exceed the capacity of the vending machine itself and compromise its operation.

Finally, US 2003/0150146 A1 presents another product presentation system in vending machines powered by the vending machine itself. The system has a plurality of luminescent elements that can be integrated both in the keypads of the machine and in additional panels thereof, and whose lighting can be activated individually or together. Likewise, said lighting can be programmed according to different parameters, such as interactions with the user (insertion of coins or cards, delivery or collection of the product, pressing buttons, change delivery, etc.), detection of nearby users by proximity sensors, or environmental changes (temperature, pressure, lighting, humidity, etc.). However, such programming does not take into account the energy requirements of the system at all times. Therefore, there could be occasions (for example, when the different rules that manage the lighting are combined so that the lighting intensity is maximum in all the luminescent elements), in which the necessary consumption is higher than that provided by the socket Internal vending machine itself.

There is therefore a need in the state of the art for a product presentation device for a vending machine, powered by said machine and with interchangeable luminescent elements, which guarantees at all times that its energy consumption does not compromise the operation of the machine Vending machine or the presentation device itself. It is also desirable that the product presentation device be installable both in existing vending machines and in newly manufactured ones.

Description of the invention

The present invention solves the problems described above by means of a device capable of extracting energy from a vending machine and supplying said energy to a plurality of luminescent product presentation elements of a vending machine, without exceeding during its operation the energy limits that said machine Vending machine is able to supply. For this, energy consumption limitation means are used that keep the electric energy extracted from the vending machine below a first threshold less than or equal to 180 mA. In a first aspect of the invention a product presentation device is presented for a vending machine comprising a plurality of connection points and at least one luminescent element connected to one of said connection points. Typically, each luminescent element presents or promotes one of the products available in the vending machine. The elements Luminescent are independent and interchangeable, so that they can be replaced, for example, in case of deterioration. The luminescent elements are typically thin and mostly flat elements with a size adapted to the geometry of the areas dedicated to them in the vending machines. These areas can combine both individual product indicators and advertising panels associated with several products or all of them, located in any area of the vending machine. The device of the invention can therefore be applied to both new vending machines and previously existing vending machines.

Preferably, the luminescent elements comprise sheets with a thickness less than 0.19 mm and, also preferably, wiring with a thickness less than 0.1 mm. It is thus allowed to introduce said luminescent elements into the usual signaling compartments (keypads) of the different brands available in the most common existing tobacco vending machines, thus replacing the labels and transparencies of traditional use. Optionally, and depending on the technology with which they are implemented, the luminescent elements can be flexible. Preferably, the connection wiring of said luminescent elements is also flexible.

Two preferred options for luminescent elements are contemplated:

- Electroluminescent labels that provide the customer with a fixed image, which can be its adjustable lighting intensity. This intensity is determined by an electronic controller of the device. Also, the electronic controller can set lighting patterns on labels, such as flashes, sequential lighting, etc.

- Screens that provide audiovisual content (image or video) configurable by the device's own electronic controller.

Preferably, the electronic controller can receive said audiovisual content from an external server or device through a connection that can be both wired and wireless, depending on the particular embodiment thereof. The electronic controller controls individually the audiovisual content of each screen, said content being transmitted through the same connection point that is used to power the screen. Consequently, said connection point can have a variable number of ports or pins depending on the particular technology of the screens.

To supply power to the luminescent elements, the device comprises power connection means that extract electrical energy from the vending machine. The point of the vending machine from which the energy is extracted may vary depending on the installation and the particular implementation of the device. According to two preferred options, the energy is extracted well from a power outlet of a screen previously integrated in the machine (for example, from a screen that shows the time and price of a selected product), or from an outlet an infrared receiver used for remote machine activation. The voltage provided will depend on each specific manufacturer of the vending machines. When obtaining the electric power directly from the vending machine, it is essential to limit the consumption of the electronic controller and the luminescent elements. If this consumption is excessive, the device could compromise the operation of the rest of the machine's elements. To avoid this, the device comprises means for limiting energy consumption that limit the electrical energy extracted from the vending machine below a first threshold.

Said first threshold may be a fixed or configurable value depending on the particular implementation of the invention. Specifically, the first threshold is equal to or less than 180 mA. In preferred implementations, said first threshold can be reduced to values equal to or less than 120 mA. In other preferred embodiments of the invention, said first threshold is for example less than 220 mA.

Below are some preferred options for energy consumption limitation means that work synergistically in preventing the first threshold from being exceeded:

- A time programmer, integrated in the electronic controller, which determines the time slots in which the device is activated. As in the previous case, the total consumption of the device is thus reduced and the lifetime of the luminescent elements is increased.

- Control means configured to set the frequency of an internal clock of the electronic controller based on the consumption of said device. By reducing the clock frequency, the power consumption of the electronic controller is reduced, and therefore, of the device as a whole. The clock frequency can be established from the control means in a static way based on consumption tests carried out prior to the operation of the device, or it can be set dynamically, adapting adaptively according to the consumption of the device. For example, the control means may establish a consumption value that, if exceeded, triggers the reduction of the device's clock frequency. Said consumption value is below the first threshold, establishing a safety margin below it.

- Luminescent elements with a consumption in the active periods less than a second threshold, said consumption being managed by the electronic controller. Preferably, said second threshold is less than or equal to 45 mA. This consumption is sufficient to implement screens with the dimensions necessary for its operation in the described device, in accordance with current manufacturing technologies. In particular, the following technologies are considered preferred options for the implementation of the screens: light emitting diode (LED) screens, Light Emitting Diode (OLED) displays Light Emitting Diode '), liquid crystal displays (LC), graphene-based screens, and thin-film transistor screens (TFT) from Thin Film Transistor'). However, the invention can be implemented by any variation or combination thereof, as well as by any other alternative screen manufacturing technology capable of providing the previously described performance and dimensions. An optional motion sensor, connected to the electronic controller and installed in the vending machine itself, which activates the luminescent elements only when motion is detected in the vicinity of said machine. The motion sensor is preferably installed in the package in which the product is dispensed. By activating the luminescent elements only when they are necessary, the total consumption of the device is reduced. This not only allows the device to operate under the required consumption thresholds, but also reduces the overall energy consumption of the vending machine and increases the lifetime of the luminescent elements.

An optional auxiliary battery, from which the electronic controller draws energy at critical point times when the consumption of the device is greater than the first threshold of removable energy from the vending machine. Note that these critical moments are very rare, so the battery life is extremely long, without compromising the advantages of energy autonomy provided by the invention. In a first preferred example, the electronic controller is configured to extract power from the auxiliary battery during the start-up of said electronic controller, at which time many controllers have a peak consumption due, among others, to the charging of the capacitor network . In a second preferred example, the electronic controller is configured to extract power from the auxiliary battery at any time when the consumption of the electronic controller (or the device as a whole) exceeds a third threshold less than or equal to the first threshold. That is, when the consumption is close to the limit established on the energy that can be removed from the vending machine (typically by establishing a certain safety margin), the electronic controller starts to extract energy from the auxiliary battery so as not to exceed that limit. Depending on the particular implementation, on occasions when power is extracted from the auxiliary battery, the electronic controller can choose either to feed completely through the auxiliary battery, or to extract only the energy not supplied by the machine from the auxiliary battery , that is, the difference in energy between the first threshold and the third threshold. Preferably, when the consumption of the device is less than the first threshold available by the machine (or less than a lower threshold of configurable value), the electronic controller can take advantage of the excess energy margin to dynamically recharge the auxiliary battery, thereby increasing the autonomy of the device as a whole.

In a second aspect of the invention a method of presenting products for vending machines is presented comprising: i. Extract electric power from the vending machine.

I. Preferably, when the extracted electrical energy is insufficient and / or during the initialization periods of the device that executes the steps of the method, extracting additional electrical energy from an auxiliary battery.

Neither. Feed a plurality of luminescent elements with the electrical energy extracted from the vending machine, and in the corresponding cases, from the auxiliary battery. The luminescent elements can be both thin flexible sheets with flat lighting, and individual screens capable of displaying audiovisual content. Therefore, this step of the method may preferably comprise the transmission to the luminescent elements of independent lighting patterns and / or data for display. iv. Maintain the electrical energy extracted from the vending machine below a first energy threshold of less than or equal to 180 mA, said first threshold being typically limited by the amount of energy that the vending machine can provide to a display and / or lighting system keeping the rest of the functionalities of said vending machine operational. Preferably, the method comprises feeding each luminescent element with an energy lower than a second threshold. More preferably, said second threshold is less than or equal to 45 mA. v. Preferably, the method may comprise receiving data from an external server to be displayed by the luminescent elements (or lighting patterns). thereof). This information can be received through a wired or wireless connection. saw. Preferably, the method may comprise using a signal provided by a motion sensor to activate the luminescent elements in the presence of movement in the environment of the vending machine. vii. Also preferably, the method may comprise using a time programmer to configure time intervals in which the device remains on.

Finally, in a third aspect of the invention there is a computer program comprising computer program code means adapted to implement the described method, when an application-specific integrated circuit is executed in a digital signal processor, a microprocessor, a microcontroller or any other form of programmable hardware. Note that any preferred option and particular implementation of the device of the invention can be applied to the method and computer program of the invention, and vice versa.

The device, method, and computer program described thus allow feeding a set of luminescent elements for presentation of the products of a vending machine without exceeding the electrical energy supplied by the machine itself. The invention also allows to individually control the lighting of each luminescent element, as well as the audiovisual content presented by each of said luminescent elements in the case of using dynamic screens.

Additionally, by minimizing the on-time and the intensity of illumination of the luminescent elements, its useful life is prolonged. As their operating time increases, the usual luminescent technologies show a deterioration in their emission efficiency, being able to reach a point of deterioration in which the emission of light is zero. By selective switching on the elements of lighting, it is possible to significantly delay said deterioration.

Finally, the design of the device allows an efficient and simple installation in a wide variety of existing vending machines, as well as being integrated into the manufacturing process of new vending machines. The device can adapt to different morphologies, sizes and features, without the need to modify the structure of the vending machine, and does not require specific technical knowledge for its installation. All these and other advantages of the invention will be apparent in light of the detailed description thereof.

Description of the figures In order to help a better understanding of the features of the invention according to a preferred example of practical realization thereof, and to complement this description, the following figures are attached as an integral part thereof, whose Character is illustrative and not limiting: Figure 1 shows a diagram of the main components that make up the device of the invention, in accordance with a particular embodiment thereof.

Figure 2 presents in more detail the functional elements that make up a particular embodiment of the electronic controller of the invention, as well as some external elements with which said electronic controller interacts.

Preferred Embodiment of the Invention

In this text, the term "comprises" and its derivations (such as "understanding", etc.) should not be understood in an exclusive sense, that is, these terms should not be construed as excluding the possibility that what is described and defined can include more elements, stages, etc.

Also, in this text "luminescent element" means any element capable of presenting at least one product offered by the vending machine, using at least one source of lighting powered by electric current. Therefore, the term "luminescent element" encompasses elements that provide uniform illumination throughout its surface, elements that generate a static illuminated image, and elements that provide a dynamic illuminated image (ie, video screens implemented with any known technology in the state of the art).

Note also that the preferred embodiments of the invention are described and optimized for tobacco vending machines. However, the invention can be applied to any other vending machine by simply modifying the morphology of the luminescent elements and the consumption thresholds to the type of particular machine to which it is desired to apply, always within the scope of the invention as it has been claimed.

Figure 1 shows a diagram of the main elements that make up a preferred embodiment of the device (1) of the invention, which in turn execute the steps of a preferred embodiment of the method of the invention. The device (1) has a multi-connection block (2) with multiple connection points (3), to which a plurality of luminescent elements (4) interchangeable by male-female connections are connected. To supply the luminescent elements, the device (1) comprises power connection means (5) and a power cable (6) that are connected to an internal outlet of the vending machine itself through at least one connector (7). Also, the device (1) comprises an electronic controller (8) that manages the extraction and supply of energy and that controls and supervises the operation of the rest of the elements of the device. The electronic controller (8) has an actuator (9) that allows the device installer to manually activate the luminescent elements, switch between different default lighting settings, etc.

Note that the power connection means (5) can comprise multiple connectors (7) associated with different connection technologies, so that the same device can be connected to the power outlets of various vending machines. Said connectors (7) may comprise interconnected pins in series, in parallel, or in a combination of both. They can also include male and female versions of the same connection technology to cover all possible cases. The luminescent element (4) shown in Figure 1 consists in particular of a screen (10) connected by a flexible cable (11) to a connector (12). The connector (12) is adapted to fit in a connection point (3), thus being able to receive both power and configuration data and data to be shown through the screen (10). According to the dimensions of the buttons of the usual tobacco machines, the multi-connection block (2) has twelve connection points (3) for twelve interchangeable luminescent elements (4). Also, the screens (10) have a thickness, which preferably will be less than 0.19 mm., For installation in the space previously used by traditional labels. The flexible cable (1 1) has a thickness of less than 0.1 mm, at least in the region of connection with the screen (10) to allow its installation in said spaces. Depending on the technology of the luminescent elements (4) of each particular implementation, said luminescent elements can be flexible to facilitate their installation.

Also in the case of tobacco vending machines, the luminescent elements (4) preferably have a surface area of 3 x 5 cm, and an illumination greater than 1000 lux of luminosity. Note that the lighting provided by the luminescent elements (4) may decrease throughout its useful life. Note also that said lighting is typically adjustable, being controlled from the electronic controller (8). The electronic controller is therefore responsible for establishing a power supply and a configuration of the luminescent elements (4) that guarantees, on the one hand, a correct display of them, and on the other hand, a global energy consumption of the device (1) below the threshold that the vending machine is able to supply without compromising the rest of its operation. In particular, in a preferred embodiment, the electronic controller (8) is configured to maintain the consumption of each luminescent element (4) below 45 mA. Depending on the particular technology implemented and the consumption of the electronic controller (8) and the other elements of the device (1), said threshold of 45 mA can be extended or reduced accordingly. The electronic controller (8) is connected to the multi-connection block (2) through an extendable cable (13). This feature allows the device to adapt to any vending machine, since their sizes are very variable, and consequently, the distance between the internal outlet to which the power connection means (5) are connected and the positions of the Luminescent elements (4) can change substantially between machines.

The device comprises additional means for reducing energy consumption. In particular, it comprises a motion sensor (14) connected by the corresponding cable (15) to the electronic controller (8); and a time programmer (16) integrated in the electronic controller itself (8). Said means for limiting energy consumption limit the lighting time of the luminescent elements (4) to those periods in which they are necessary (depending on the proximity of the client and / or the operating hours, respectively), thus controlling the total consumption of the device and increasing the life time of said luminescent elements.

The motion sensor (14) is preferably installed in the box through which the products offered by the vending machine are delivered, therefore not requiring any modification to said machine. In a preferred embodiment, the motion sensor (14) is based on infrared techniques. However, other types of motion sensors that allow the electronic controller (8) to determine those moments in which the luminescent elements must be activated can be used. In addition to switching the luminescent elements (4) on and off, the electronic controller (8) can use the information provided by the motion sensor to dynamically modify the configuration or content of said elements (for example, the intensity or patterns of lighting, or the images or videos shown). Note that it is possible to implement devices in which the operation of the luminescent elements (4) from the electronic controller (8) is modified in an equivalent manner from the information provided by any other type of sensor (for example, lighting sensors or temperature), or by any other element used to interact with the user (for example, depending on the pulse of buttons, of tactile elements in the screens themselves (10), of introduction of coins or cards, etc.).

Figure 2 shows in greater detail the functional elements that make up a preferred embodiment of the electronic controller (8), as well as other elements of the device (1) and its application environment with which said electronic controller (8) interacts. Note that the functional separation of the components of the electronic controller (8) has been carried out for explanatory purposes. That is, there may be particular embodiments of the electronic controller (8) within the scope of the invention as claimed in which some of said components is not present, in which several components appear combined in the same component, in the that the same functionality is divided into several components, etc. The central core of the electronic controller (8) is the control means (17), which comprise the computer program code means that control, coordinate and supervise the other elements of the device (1). In this case, the electronic controller (8) draws electricity from two sources: the power connection (5) connected to the vending machine itself, and an auxiliary battery (18) to which it uses when the power supplied by the machine itself It is not enough for the operation of the device (1). The control means (17) manage the energy extracted from the power connection (5) through a first interface (19) (called for simplicity of power interface), and the energy extracted from the auxiliary battery (18) through of a second interface (20) (battery interface). In particular, the control means limit the consumption extracted through the power interface (19) below a first threshold, equal to or less than 180 mA. Preferably, said first threshold is equal to or less than 120 mA.

To maintain the extraction of energy below said first threshold, the auxiliary battery (18) is used in the moments in which the consumption of the device (1) is excessive. The specific rules according to which the auxiliary battery (18) is used may vary depending on the particular implementation. For example, the control means (17) can use said auxiliary battery (18) by default each time the electronic controller (8) is turned on, this being the time of greatest consumption of it. Alternatively or in addition, the control means (17) can use the auxiliary battery (9) when the consumption of the device (1) as a whole or of the electronic controller (8) exceeds a second threshold. Said second threshold is preferably lower than the first threshold, thus leaving a safety margin between them. Also, when energy is extracted from the auxiliary battery (18), depending on the particular configuration of the control means (17), all the energy required by the device (1) can be extracted during that period of time, or simply the difference between the energy supplied by the vending machine and that required by the device (1).

The electronic controller (8) also comprises a third interface (21) (element interface) that manages the power supply to the luminescent elements (4) according to the previously mentioned rules. Note that depending on the particular technology of the luminescent elements (4), the element interface (21) may comprise only one power port, or additionally incorporate pins for configuration and / or transmission of audiovisual content to be displayed. Said audiovisual content is preferably received through a network interface (24) through which the control means (17) are connected to a communications network (26), to which the server (27) is also connected from the one that transmits the content. Note that the network interface (24) can also be used to remotely configure the device. The communication network (26) is preferably a wireless network, such as a Wi-Fi network, bluetooth, etc. However, particular embodiments of the invention can be implemented by any other type of connection, wired or wireless, which allows connecting an external element in which the audiovisual content and the device (1) are stored. The electronic controller (8) also comprises a local memory (22) for storing the received audiovisual content or any other configurable parameter of the device, as well as relevant sales data, customer profiles or other similar data that may result from utility.

The electronic controller (8) additionally comprises a fifth interface (25) (sensor interface), which manages communication with the motion sensor (14). Obviously, if there are alternative and / or additional sensors, each sensor will have its corresponding sensor interface (25), which interface can be only input or input and output depending on each particular implementation.

Alternatively, the device of the invention may incorporate a video camera suitable for facial recognition, to allow the electronic controller

(8) perform functionalities associated with said recognition (personalized offers, discounts, etc.).

Finally, the electronic controller (8) has a local clock (23) with a configurable frequency. In this way, the control means (17) can modify the clock frequency to alter the energy consumption of the electronic controller (8). That is, if the consumption of the electronic controller (8) is excessive, it can be reduced by consequently decreasing the clock frequency of the electronic controller (8). Preferably, the consumption of the electronic controller (8) is kept below 90 mA during the normal operation of the device (1) (that is, excluding specific situations of higher consumption such as turning it on).

The device of the invention can be configured and have means for connecting to the machine's CPU and communicating with it, for example via USB or any other means, in order to extract information from the CPU and use it, for example, to carry out promotions. to the users of the machine, using for example the light element itself, for which it has audiovisual capabilities.

In this way, the data stored in the CPU such as sales records, stock, allocation of supply channels, second presses in the case of sold out product, etc., can also be saved and used by the device of the invention, for example for offer commercial advantages to the customer who makes a purchase of a product dispensed by the machine.

In view of this description and figures, the person skilled in the art will be able to understand that the invention has been described according to some preferred embodiments thereof, but that multiple variations can be introduced in said embodiments. preferred, without departing from the object of the invention as claimed.

Claims

Device (1) for presenting products for a vending machine comprising:

- a plurality of connection points (3) adapted to be connected to a plurality of luminescent elements (4) for product presentation;

- at least one luminescent element (4) connected to one of said connection points (3);

- power connection means (5) adapted to extract electric power from a vending machine;

- an electronic controller (8) configured to feed said at least one luminescent element (4) with at least the electrical energy extracted from the vending machine;

characterized in that the device (1) also comprises means for limiting energy consumption configured to keep the electric energy extracted from the vending machine below a first threshold less than or equal to 180 mA.

Device (1) according to any of the preceding claims characterized in that the means for limiting energy consumption comprise a time programmer (16) integrated in the electronic controller (8) and configured to limit the operating time of the device (1).

Device (1) according to any of the preceding claims characterized in that the energy consumption limitation means comprise control means (17) configured to establish a frequency of an internal clock (23) of the electronic controller (8) that limits the consumption of said electronic controller (8).

Device (1) according to any of the preceding claims characterized in that the energy consumption limitation means comprise control means (17) configured to control individually feeding each luminescent element (4), setting a maximum consumption of each luminescent element (4) below a second threshold.

5. Device (1) according to claim 4 characterized in that the second threshold is less than or equal to 45 mA.

Device (1) according to any of the preceding claims characterized in that the luminescent elements (4) comprise luminescent sheets (10) with a thickness of less than 0.19 mm.

Device (1) according to claim 6 characterized in that the luminescent elements (4) comprise connection cables (11) with a thickness of less than 0.1 mm.

Device (1) according to any one of the preceding claims characterized in that the luminescent elements (4) comprise screens (10) configured to display independent audiovisual content in each luminescent element (4); and because the electronic controller (8) comprises data reception means (24) configured to receive the audiovisual content of an external server (27) and data transmission means (21) configured to transmit the audiovisual content to the luminescent elements (4).

Device (1) according to claim 8 characterized in that the screens (10) are chosen from the following group: light emitting diode screens, organic light emitting diode screens, liquid crystal screens, graphene screens and thin sheet transistor screens.

10. Device (1) according to any of claims 8 and 9 characterized in that the data reception means (24) are wireless means.

Device (1) according to any of the preceding claims characterized in that the means for limiting energy consumption they comprise a motion sensor (14) connected to the electronic controller (8) and configured to activate the luminescent elements (4) when detecting movement next to the vending machine.

Device (1) according to any one of the preceding claims characterized in that the means for limiting energy consumption comprise an auxiliary battery (18), the electronic controller (8) being configured to extract energy from the auxiliary battery (18) when the consumption of Electronic controller power (8) exceeds a third threshold less than or equal to 180 mA.

Device (1) according to any one of claims 1 to 1, characterized in that the means for limiting energy consumption comprise an auxiliary battery (18), the electronic controller (8) being configured to extract energy from the auxiliary battery (18) during an initial period of ignition of the electronic controller (8).

Product presentation method for a vending machine comprising:

- extract electric power from the vending machine;

- supply at least one luminescent element (4) connected to a connection point (3) with at least the electrical energy extracted from the vending machine;

characterized in that the method further comprises limiting the electrical energy extracted from the vending machine below a first threshold of less than or equal to 180 mA.

Computer program comprising computer program code means adapted to perform the steps of the method of claim 14, when said program is executed in a digital signal processor, an application-specific integrated circuit, a microprocessor, a microcontroller or any other form of programmable hardware.