WO2016166398A1

WO2016166398A1 - Vending machine for cosmetic and/or sun protection products

Info

Publication number: WO2016166398A1
Application number: PCT/ES2016/070256
Authority: WO
Inventors: Domingo BARCELÓ CORONADO; Nadal MUÑOZ LLOMPART; Pedro MARTÍNEZ MUÑOZ
Original assignee: Innovació Turística Balear, S.L (Innturba, S.L)
Priority date: 2015-04-16
Filing date: 2016-04-13
Publication date: 2016-10-20
Also published as: ES2590212B1; ES2590212A1

Abstract

Disclosed is a vending machine for cosmetic and/or sun protection products, which comprises: a body formed by a front part and at least one rear part; trays for housing the products; means for paying for the products; a device for transporting the products; a box for collecting the products; power supply means; a device for acquiring skin data, a unit for processing skin data, and a unit for selecting the cosmetic and/or sun protection products; a communication interface; and a central control unit.

Description

DESCRIPTION

Vending machine for cosmetic and / or sun protection products. OBJECT OF THE INVENTION

The present invention belongs to the technical field of vending machines, commonly used in vending (or automatic sale of products). More specifically, the invention relates to a vending machine for cosmetic and sun protection products, capable of assessing the condition of the skin of a potential client and offering the most suitable cosmetic and sun protection products for their needs.

BACKGROUND OF THE INVENTION

Vending machines, intended for the automatic sale of products, are well known in the art.

In fact, the first vending machines were developed in England in the 1880s. Since then they have been progressively evolving in such a way that, currently, it is possible to acquire a great variety of products through them, among others: soft drinks; pastry products; candies; cigarettes; hot drinks; newspapers, magazines, condoms; stamps; and bus, subway and train tickets.

The main advantage of vending machines over conventional sales is that they significantly increase the availability of products intended for sale.

Thus, in order for a vending machine to be operational and can therefore offer the products stored inside it, it is only necessary that said machine be powered electrically. This implies that any place provided with a plug or connection point to an electrical network is capable of becoming a product distribution point by means of a vending machine.

In addition, unlike traditional stores or outlets, vending machines are not subject to schedules, thus allowing the acquisition of products at any time, 24 hours a day and 365 days a year.

However, and despite the fact that vending machines have been known for more than a hundred years, there are still a number of products, such as cosmetic products and sunscreen products, which are hardly distributable through vending machines according to the prior art. , because prior to the acquisition of these products it is convenient to carry out a technical analysis of what the client's needs are and / or provide advice, so that said customer can know in advance what is the most suitable product for their needs.

Thus, before a customer acquires a cosmetic and / or sunscreen product, it is convenient to perform an analysis of the state of their skin, deduce what their phototype is (classification of the skin according to its ability to assimilate solar radiation) and / or evaluate what will be the UV (ultraviolet) radiation to which said customer will be subjected.

DESCRIPTION OF THE INVENTION

In order to address the problems and disadvantages of the prior art indicated above, the invention provides a vending machine for cosmetic and / or sunscreen products comprising:

- A body formed by a front portion and a rear portion joined together in a partially separable manner and delimiting a closed interior space;

- Trays to house cosmetic and / or sun protection products, said trays being arranged in the closed interior space;

- Means of product payment;

- A device for transporting cosmetic and / or sunscreen products;

- A product collection drawer;

- Power supply means;

Characterized because it is also provided with:

- A skin analyzer comprising: at least one skin data acquisition device, and a skin data processing unit,

- A unit of choice for cosmetic and / or sun protection products;

- A communication interface; Y

- A central control unit. Throughout this specification, it should be understood that the "front portion" is that portion of the vending machine that is oriented towards potential customers when the machine is operational and that the "back portion" is the portion opposite to the "portion"frontal". It should also be understood that the term "cosmetic product" refers, among others, to "makeup bases, facial powders, facial correctors, make-up for legs and body, facial creams, facial lotions, hand and body creams, facial masks, lipsticks, lip liner, lip gloss, eye pencils, eyebrow pencils, eyeliner, masks for eyelashes and nail polishes "and that the term" sunscreen product "refers, among others to" tanning oils, creams suntan lotions, suntan lotions, sunscreen lotions, sunscreen lotions, lip balms, repair moisturizing lotions after sun tanning, after sun creams and sunglasses. "

In the vending machine object of the invention, the skin data acquisition device acquires skin data from a person (a potential customer) that is at a distance from the vending machine less than a predetermined distance, for example, one meter. The activation of the acquisition device can be automatic or, alternatively, at the request of the potential customer, who requests it from the vending machine according to the invention, to perform a skin analysis by means of the communication interface. Once the skin data is acquired by the skin data acquisition device, the central control unit orders to transmit said skin data to the skin data processing unit.

The cutaneous data processing unit has access to a first database that contains a predefined relationship of possible cutaneous states. In this database, it is also associated to each possible cutaneous state with a corresponding range of skin data.

When the cutaneous data processing unit receives the cutaneous data from a potential client, it analyzes to which of the possible ranges said cutaneous parameters belong, assigning to the potential client the cutaneous state corresponding to said range. Subsequently, the central control unit orders to transmit the cutaneous state assigned to the potential client to the means of choice of cosmetic products and / or sunscreen, which choose according to the cutaneous state assigned to the potential client which are the cosmetic products and / or sunscreen in stock (that is, housed in the vending machine), which are more appropriate for said potential customer. The means of choosing cosmetic and / or sun protection products have access to a second database that relates each possible cutaneous state with a set of cosmetic and / or sun protection products, recommended for said cutaneous state and housed in the machine Vending of the invention.

When the means of choice of cosmetic and / or sunscreen products receive the cutaneous state of a potential client, they identify by means of the second database which is the set of products recommended for said specific cutaneous state.

Finally, the control unit orders to transmit said quantitative estimate of the cutaneous state of the potential client, and / or the list of cosmetic and sun protection products recommended to the communication interface so that it can be consulted by the potential client.

If after receiving this information (quantitative estimation of the cutaneous state and / or the list of recommended products) the client wishes to finally acquire a cosmetic and / or sunscreen product housed in the present vending machine, the client must indicate through the interface of communication which is the concrete product that you want to acquire and proceed to pay the corresponding amount through the means of payment of product. The central control unit, after verifying that the customer has paid for the product to be purchased, activates the product transport device to move a cosmetic and / or sunscreen product of the type acquired by the customer to the product collection drawer for That the customer can pick it up.

Therefore, the "transport device" is capable of transporting, moving and / or distributing a cosmetic and / or sunscreen product, from one of the vending machine trays to a point in the interior space of the vending machine in which said product falls by gravity to the product collection drawer.

The product payment means are preferably provided with payment modules in currencies, bills and / or credit card.

Preferably, the skin data acquisition device, the product choice means, the payment means and / or the product collection drawer are arranged in the front portion of the vending machine, while the network connection means Electric are not arranged on the front of the vending machine. Also, the front portion and the rear portion of the vending machine can be partially separated from each other to allow an operator to access the closed interior space, replenish cosmetic and / or sunscreen products housed in the trays (also known by the English term "rack") and perform maintenance.

The power supply means provide the electric power necessary for the operation of the vending machine of the invention in particular, of the product payment means, the product transport device, the skin analyzer, the product choice unit, the communication interface and / or central control unit. Said power supply means may comprise a power cable for connecting the vending machine to an electrical network and may optionally be provided with a transformer and / or a UPS (Uninterruptible Power Supply System). Alternatively they can comprise batteries and / or photovoltaic cells.

In a first embodiment of the invention, the skin data acquisition device comprises a conventional digital camera and / or a UV digital ultraviolet camera. In said embodiment of the invention, the skin data processing unit preferably comprises a digital image analysis device that makes a quantitative estimate of what the cutaneous state of the potential client is from the images taken by said cameras.

In a preferred embodiment of the invention, the conventional digital camera and / or the UV digital ultraviolet camera of the skin data acquisition device are connected to a face detection module. Said face detection module analyzes the images taken by said cameras, detecting those points of the images in which there is a color contrast, and determines whether the color contrast points of the images taken by the cameras agree, or not, with predefined color contrast points, included in a third database and corresponding to the fundamental areas of a human face (for example, eyebrows, eyes, nose, and mouth). If the face detection module determines that the color contrast points of the images taken by the cameras do match the fundamental areas of a human face, then it sends an activation signal to the digital image analysis device to perform a Quantitative estimation of what is the cutaneous state of the detected face. In addition, in an even more preferred embodiment of the invention, the face detection module has a face-frame display that is shown on a screen, provided on the communication interface, with lines forming a rectangle / square in color, allowing said face framing display to a potential client to approach or move away from the vending machine so that its face corresponds to said framing.

The ultraviolet digital UV video cameras comprise a sensor that detects UV (ultraviolet) rays by filtering the RGB color rays (red, green and blue rays of the visible solar spectrum), so that the images captured by said camera are monochromatic. This particular type of image enhances skin pigmentation. Thus, in the images taken by such a camera, the light skin appears paler and the dark skin looks darker than in the images taken by a conventional camera, sensitive to visible light. This allows the digital analysis device of the skin data processing unit to more easily detect in said monochromatic images, irregular pigmentations, freckles and sunspots, usually caused by UV rays.

In a preferred embodiment of the invention, the vending machine object of the invention also allows the customer to visualize the images captured by a digital ultraviolet UV camera while applying a cosmetic and / or sunscreen product on his body with UV radiation blockers. In the images captured by the UV digital ultraviolet camera, the blocker of UV radiation present in said cosmetic and / or sunscreen product is shown in black, so that the areas of the client's body with less concentration of this product (and therefore less protection against UV solar radiation) will appear in a lighter color. This allows the customer to properly administer the cosmetic and / or sunscreen product with UV sunscreen blocker, and effectively protect against such radiation, reducing the risk of sunburn, sunspots, melanoma and others. damage usually caused by excessive sun exposure.

The skin data processing unit provided in a vending machine according to the invention preferably determines what is the phototype of the potential client. They can also quantitatively evaluate at least one of the following skin parameters: Presence of sebum;

Degree of pigmentation;

Presence of acne;

State of the pores;

Level of elasticity;

Level of sensitivity;

Hydration level

In a second embodiment of the invention, the skin data acquisition device comprises a scanner, for example, a skin scanner of the Portable Skin Analyzer type (trademark) marketed by Timpa Healthcare. In a third embodiment of the invention, the skin data acquisition device comprises a scanner and a conventional digital camera and / or a UV digital ultraviolet camera.

In a preferred embodiment of the invention, the central control unit, the cutaneous data processing unit, the means of choosing cosmetic and / or sun protection products are integrated in a microprocessor, digital signal processor (DSP) and / or programmable logic means.

The communication interface preferably comprises a touch screen. More preferably, the communication interface is a large touch screen, for example, 45 to 55 inches (114 to 140 cm). The communication interface may also preferably comprise at least one speaker.

The vending machine according to the invention is preferably provided with an information receiving unit preferably connected to an access to a communications network, for example, a WiFi network (this term being understood as any wireless local area network) GPRS (General Service of Packages via radio) or Internet. The central control unit orders to acquire by means of the information reception unit connected to the access to a communications network, complementary information that shows the potential client through the communication interface.

Such complementary information is, for example, information regarding the date, time, levels of UV solar radiation, weather, solar reflection, height of the sun, humidity, atmospheric pressure, precipitation forecast, and / or points of tourist interest, cultural or sports, corresponding to the geographical region in which the Vending machine.

The complementary information may also be advertising and / or entertainment information (such as children's games, video games, movies and / or cartoons). In a preferred embodiment of the invention, the vending machine is provided with an information transmission unit connected to the access to the communication network.

The information receiving unit and the information transmission unit can be integrated into a single information reception / transmission unit.

In a preferred embodiment of the invention, the information receiving unit is connected to a communications network and / or to a fourth database through which it receives complementary meteorological information corresponding to the geographical region in which The vending machine is located.

A communications network especially preferred by the present invention is the Internet, so that, in a possible embodiment of the invention, the information receiving unit receives complementary information from at least one web page, said complementary information being meteorological and corresponding. to the geographical region in which the vending machine is located.

As non-limiting examples of web pages, which may be used in the present invention, are mentioned among others: the page of the State Meteorological Agency, AEMET (tt _i : _i ^ w _¡ aemet.e from which information can be obtained on the level of UV radiation corresponding to the geographical region in which the vending machine is located, and / or the Openweather website (h p.//openwea†hefrnap.org), from which information on the weather can be obtained Atmospheric corresponding to the geographical region in which the vending machine is located.

In an even more preferred embodiment of the invention, the central control unit orders periodically to transmit to the transmission unit, management information of the vending machine. Said management information is transmitted from the access to the communications network to a remote location. The management information of the vending machine may be, for example, the amount of money collected by the vending machine, the change in currencies available in the vending machine, and / or the stock of cosmetic and / or sunscreen products available in The vending machine. In another embodiment of the invention, the vending machine is provided with an information reception / transmission unit connected to the access to the communication network, a communication interface comprising at least one speaker and a microphone, the device also being connected at least one speaker and the microphone to the information reception / transmission unit. This configuration allows a customer to receive remote advice about cosmetic and / or sunscreen products available at the vending machine.

The vending machine according to the invention is also preferably provided with a device for checking the transmission of UV rays comprising a UV light source (for example, a UV diode), a UV light receiving probe and an estimation unit for UV transmission

The operation of the device for checking the transmission of UV rays is as follows: the customer interposes between the UV light source and the receiving probe an object whose UV transmission wishes to know, for example, sunglasses and orders the machine Vending machine, through the control interface, to perform said check. The UV light source then emits UV radiation that strikes the object. A part of said UV radiation is reflected by the object while another part manages to pass through it reaching the receiving probe. The one unit of estimation of the UV transmission compares the amount of UV light emitted by the UV light source with the amount of UV light received by the receiving probe and thus determines an estimate of the UV transmission.

Thus, for example, the device for checking the transmission of UV rays allows a potential customer to know the UV transmission of certain sunglasses (reference glasses). This UV transmission value of the reference glasses can serve the customer to estimate what approximate value of UV transmission (which can be similar, greater or less than the value of the reference glasses) should have sunglasses to fit your needs. In this way, the customer could consult, through the communication interface, the UV transmission values of the sunglasses available in the vending machine and acquire sunglasses that fit their needs.

Preferably, the vending machine according to the invention is provided with a product storage assembly comprising a thermostat and / or a means of heating / cooling The thermostat measures the temperature and if it is not within a suitable range for the preservation of cosmetic and sun protection products (for example, between +10 and + 18 ° C), it activates the heating / cooling means until the temperature reaches a value within that range.

In another preferred embodiment of the invention, the vending machine is provided with an emotion detection unit comprising a conventional digital secondary camera and / or digital ultraviolet. This camera captures detailed images of the client's face and transmits them to means of interpretation of emotions for interpretation. The interpretation of emotions of the potential client is transmitted to the unit of choice of products that uses it, in combination with the skin data obtained by the rest of the units linked to sensors, cameras and / or photodiodes, to assign the potential client cosmetic products and / or sun protection in stock more appropriate.

The emotion detection means can optionally interpret the images captured by the secondary camera, performing the following steps:

They recognize the fundamental areas of the client's face (for example, the eyebrows, eyes, nose, and mouth), detecting those points of the captured images, which have a color contrast;

They detect in said fundamental areas of the client's face a plurality of points of interest, previously defined;

They track the variation of the positions of the points of interest along the sequences of images captured by the secondary camera; They detect in said fundamental areas of the client's face a plurality of predetermined angles of interest, each of said angles being defined by the relative position, in the same image, of three of the points of interest, not aligned with each other;

They track the variation of the angles of interest throughout the image sequences,

They estimate the magnitude of microexpressions of the subject, based on the variation of the positions of points of interest and angles;

- Associate the magnitude of the microexpressions calculated in the previous stage to the basic emotions of the subject, using a predefined table, which correlates the magnitude of the microexpressions, with different basic emotions. BRIEF DESCRIPTION OF THE FIGURES

Figure 1 is a schematic front view of an embodiment of a vending machine according to the present invention;

Figure 2 is a schematic side view of the vending machine shown in Figure 1;

Figure 3 is a schematic rear view of the vending machine shown in Figure 1;

Figure 4 is a schematic view of the interior of the vending machine shown in Figure 1; Y

Figure 5 is a diagram showing a possible operation of the central control unit provided in a vending machine according to the present invention;

PREFERRED EMBODIMENT OF THE INVENTION

Next, a specific embodiment of the invention is described, given as an illustrative and non-limiting example, with reference to the attached figures. In said figures, components with the same or similar functions have been designated using the same reference number.

In Figures 1 to 4 a vending machine according to the invention is shown comprising a body 1, formed by a front portion 1 a and a rear portion 1 b joined together in a partially separable manner by hinges 24. The body 1 of the vending machine It is supported by height adjustable legs 31.

In the upper part of said front portion a communication interface 2 is provided, which in this embodiment is a touch screen and further comprises a speaker 17.

The touch screen has, in this embodiment of the invention, three distinct areas (called partitions):

a) a partition of complementary information (which shows, among others, the date, time, temperature, UV radiation value, UV solar radiation levels, solar reflection, sun height, humidity, pressure atmospheric forecast of rainfall, and / or points of tourist, cultural or sports interest, corresponding to the geographical region in which the vending machine is located);

b) a partition of information on cosmetic and / or sun protection products (which shows the products available in the vending machine, their properties and price); Y

c) a partition in which advertising and video games are shown.

The touch screen is also provided with virtual buttons, located in the information partition and that allow a potential tooth to perform, among others, the following actions by pressing directly on that part of the touch screen on which said buttons are located: activate the skin analyzer, select a product, and / or select the method of payment for a product.

A product collection drawer 3 is provided on the lower part of said front portion. The product payment means 4, 5, 6 comprise in this embodiment a payment module with coins 4, a payment module with bills 5 and a payment module with card 6. The vending machine is also provided in this embodiment of the invention, of a compartment of the change collection 8 and a closure 9 that prevents a possible malicious separation of the two sheets 34, 35 comprising front portion 1a.

The skin analyzer 16 comprises, in this embodiment of the invention, a skin analyzer type scanner and is also provided in the front portion 1a of the body of the vending machine.

Also provided in the front portion 1a is the emotion detection unit 12 provided with a normal digital camera, and the device 7 for checking the transmission of UV rays (also called "glasses tester").

In this embodiment of the invention, an additional ultraviolet digital camera 1 1 of UV videography is also provided in the front portion 1a, so that customers can correctly administer cosmetic and / or sun protection products.

The vending machine is provided, in this embodiment, with power supply means comprising a power supply 20 connected to a female outlet 50, to which a power cable is connected. The vending machine is also provided with a technical gate 32. In this embodiment of the vending machine according to the invention information reception / transmission unit 10 (also called communications module) comprises an antenna that emits and receives information wirelessly and through a GPRS connection 29. Also, the storage set of products comprises a thermostat 28 and / or heating / cooling means provided with a closed circuit within which a gas circulates. Said closed circuit is provided with a compressor 21 that compresses the gas and evaporates it in the evaporator 22, so that heat is expelled by the external condenser 23. A drain pipe 30 is also provided. The action of the compressor is controlled by the central control unit 39, said central control unit 39 being in this embodiment, a microprocessor.

In this embodiment, an external thermostat 33 is also provided which measures the temperature outside the vending machine and transmits that information to the central control unit 39 so that it is displayed on the touch screen.

In this embodiment of the invention, the skin data processing unit, the means of choosing cosmetic and / or sun protection products are also integrated in the microprocessor.

In this embodiment of the invention, cosmetic and / or sunscreen products 18 are initially housed in trays 27. As stated above, when a customer wishes to purchase a product, he must select it from all those shown on the touch screen of the communication interface by pressing the envelope on the area of the touch screen where the corresponding virtual button is located. Once the purchase is accepted, the central control unit gives you the option to select the payment method (coins / bills and / or credit card). The customer confirms the payment method by pressing the corresponding virtual button and the central control unit activates the corresponding means of payment with coins 4, means of payment with banknotes 5 and / or means of payment with card 6. Once the payment is confirmed, The central control unit activates the means of transporting the product. In this embodiment, the transport means comprise stepper motors (not shown in the figures) connected to endless springs 60 associated with each cosmetic and / or sun protection product 18. The control unit sends electronic impulses to the stepper motor associated with product 18 that the customer has bought. The spring 60 attached to said motor rotates causing the purchased product 18 to move and fall into the cone collects products 26. The photo product fall cell 25 (or Swift cell) detects the product fall, and transmits an electronic signal to unit of control, which then orders the stopping of the corresponding stepper motor. The product 18 falls by gravity of the cone collects products 26 to the product collection drawer 3. The customer can then open the gate 40 and collect the product 18.

Figure 5 shows how the central control unit 39 is connected and controls the operation of the following components: the information reception / transmission unit 10;

The product collection box 3;

The closure 9;

The exchange collection compartment 8;

The additional 1 1 ultraviolet digital camera;

The emotion detection unit 12;

The device 7 for checking the transmission of UV rays in glasses; The skin analyzer 16;

The communication interface 2 provided with the touch screen;

A sound intercom 13 connected to the speaker 17;

The payment module with coins 4;

The payment module with 5 bills; Y

The card payment module 6.

Although the present invention has been described in relation to a preferred embodiment thereof, it will be appreciated from the description that various combinations of elements, variations or improvements can be made therein, and are within the scope of the invention, defined exclusively by the following set of claims.

Claims

1. Vending machine for cosmetic and / or sun protection products (18) comprising:

- A body (1) formed by a front portion (1 a) and a rear portion joined (1 b) to each other in a partially separable manner and delimiting a closed interior space;

- Trays (27) to house cosmetic and / or sun protection products (18), said trays being arranged in the closed interior space;

- Means of product payment (4, 5, 6);

- A device for transporting cosmetic and / or sunscreen products;

- A drawer (3) for product collection;

- Power supply means (20, 50);

Characterized because it is also provided with:

- A skin analyzer (16) comprising: at least one skin data adq device, and a skin data processing unit,

- A unit of choice for cosmetic and / or sun protection products;

- A communication interface (2); Y

- A central control unit (39).

2. Vending machine according to claim 1, characterized in that the skin data acquisition device comprises a conventional digital camera and / or a UV digital ultraviolet camera.

3. Vending machine according to any of the preceding claims, characterized in that the skin data acquisition device comprises a scanner.

4. Vending machine according to any one of the preceding claims, characterized in that the skin data processing unit preferably comprises a digital image analysis device.

5. Vending machine according to claims 2 and 4, characterized in that the conventional digital camera and / or the UV digital ultrasound camera of the skin data acquisition device are connected to a face detection module, analyzing said detection module the images taken by these cameras, detecting those points of the images in which there is a color contrast, and determining whether the color contrast points of the images taken by the cameras are consistent, or not, with color contrast points predefined that correspond to the fundamental areas of a human face.

6. Vending machine according to claim 5, characterized in that the face detection module has a face-frame display that is shown on a screen, provided in the communication interface (2), with lines forming a square rectangle in color , allowing said face framing display to a potential client to approach or move away from the vending machine so that its face corresponds to said framing.

7. Vending machine according to any of the preceding claims, characterized in that the central control unit, the skin data processing unit, the means of choice of cosmetic products and / or sun protection are integrated in a microprocessor, digital signal processor (DSP) and / or programmable logic means.

8. Vending machine according to any of the preceding claims, characterized in that the communication interface (2) comprises a touch screen.

9. Vending machine according to any of the preceding claims, characterized in that the communication interface comprises (2) at least one speaker (17).

10. Vending machine according to any of the preceding claims, characterized in that it is also provided with access to a communications network.

1 1. Vending machine according to claim 10, characterized in that the communications network is one is a WiFi network (wireless local area network), GPRS (29) or the Internet.

12. Vending machine according to any of claims 10 and 11, characterized in that it is provided with an information receiving unit, connected to the access to the communications network.

13. Vending machine according to claim 12, characterized in that the communications network is internet and that the information receiving unit receives complementary information from at least one web page, said complementary information being of meteorological type and corresponding to the geographical region in the The vending machine is located.

14. Vending machine according to any of claims 1 to 13, characterized in that it is provided with an information transmission unit, connected to the access to the communication network.

15. Vending machine according to claims 13 and 14, characterized in that the information receiving unit and the information transmission unit are integrated in a single information reception / transmission unit (10).

16. Vending machine according to claim 15, characterized in that it is provided with a communication interface comprising at least one speaker (17), because it is provided with a microphone and because the at least one speaker (17) and the microphone are connected to the information reception / transmission unit (10).

17 Vending machine according to any one of the preceding claims, characterized in that it is further provided with a device (7) for checking the transmission of UV rays comprising a UV light source, a UV light receiving probe and a unit of UV transmission estimation.

18. Vending machine according to any of the preceding claims, characterized in that it is also provided with a product storage assembly comprising a thermostat (28) and heating and / or cooling means.

19. Vending machine according to any of the preceding claims, characterized in that it is provided with an emotion detection unit (12) provided with a conventional digital secondary camera and / or digital ultraviolet camera which captures detailed images of a client's facial expression and transmits them to a means of interpreting emotions.

20. Vending machine according to claim 19, characterized in that the emotion detection means (12) interpret the images captured by the secondary camera:

-Recognizing the fundamental areas of the client's face, detecting those points of the captured images, which have a color contrast;

Detecting in said fundamental areas of the client's face a plurality of points of interest, previously defined;

Tracking the variation of the positions of the points of interest along the sequences of captured images;

Detecting in said fundamental areas of the client's face a plurality of predetermined angles of interest, each of said angles being defined by the relative position, in the same image, of three of the points of interest, not aligned with each other;

By tracking the variation of the angles of interest throughout the image sequences,

Estimating the magnitude of microexpressions of the subject, based on the variation of the positions of points of interest and angles; Y

- Associating the magnitude of the microexpressions calculated in the previous stage with the basic emotions of the subject, using a predefined table, which correlates the magnitude of the microexpressions, with different basic emotions.