Wall-mounted housing for a display and / or control device including an ambient air measurement sensor and display and / or control device including said housing

Abstract

The invention relates to a wall-mounted housing for a display and / or control device (100) intended to be fixed to a wall support which comprises a first element (200) having a first side wall (221), a bottom wall (222) transverse to the first side wall (221), a stop (210) projecting outwardly from the first side wall (221) and intended to bear on the front of the wall support (400). Said first side wall (221) forms a housing (220) arranged to be inserted into a cavity made in said wall support (400) and to accommodate at least one ambient air measurement sensor (520). Such a housing further comprises a second element (300) intended to receive a human-machine interface and to be fixed to the first housing element (200).Said first and second housing elements are mutually arranged to form an air circulation duct guiding an air flow opening into the housing (220) from an air intake (241) made in the first (200) and / or second (300) housing element (100B). Figure for abstract: Fig. 4.

Description

Title of the invention: Wall-mounted housing for a display and / or control device including an ambient air measurement sensor and display and / or control device including said housing Technical field

[0001] The present invention relates to a wall-mounted housing of a display and / or control device including an ambient air measurement sensor. The invention further relates to any display and / or control device including such a housing. Prior art

[0002] Wall-mounted display and / or control devices are increasingly used to display certain quantities characterizing an atmosphere prevailing in a place (for example, the ambient temperature or humidity) and / or to control various home automation devices. Conventionally, it is known to use multifunctional wall boxes, flush-mounted or surface-mounted, which can control lighting, an air conditioning system, an alarm system, roller shutters or other automated functions of a home or office. It is also known to use screens, possibly touch-sensitive, as a human-machine interface allowing interaction on the various functionalities by simple programming of said interface or any other technology such as the operation of buttons, voice-controlled systems, etc.However, certain display or control functions require specific sensors to measure one or more parameters or characteristics of the immediate environment of such devices.

[0003] Among the functions requiring sensors, air conditioning and other ventilation systems may use sensors for measuring particles, composition and / or air quality. Such sensors require aspirating a flow of ambient air in order to be able to analyze it and determine the concentrations of gases or particles present in the air. Such sensors are bulky and require an air intake to be in direct fluid communication with the environment whose characteristics are to be measured. There are connected sensors that can be integrated into cavities made in a wall or partition and comprising an air intake on a face projecting from said wall or partition. Others are intended to be affixed to a wall or partition as an area, increasing their size compared to built-in solutions.

[0004] However, when such sensors are integrated into a display and / or control device having a human-machine interface on the front face, for example when the interface comprises a screen, possibly a touch screen, constraints impose in particular that the housing of such a device does not have a visible fixing element on the front face and that it can easily be detached from the wall on which it is affixed to carry out maintenance operations. Thus, display and / or control devices integrating an ambient air sensor generally consist of a fixing plate secured to a wall on which a bulky housing is fixed, integrating both the human-machine interface and the ambient air measurement sensor. Such housings are sometimes several centimeters thick, which is not very aesthetic and, in fact, such housings are mainly used only in industrial environments.

[0005] The invention aims to generalize the use of such boxes in any type of environment, by limiting the thickness of a wall-mounted box of a display and / or control device integrating an ambient air sensor. Summary of the invention

[0006] Thus, the invention proposes a wall-mounted housing for a display and / or control device comprising at least one ambient air measurement sensor, said housing being intended to be fixed to a wall support, said human-machine interface having an active face and a rear face. To reduce the size of such a device projecting from the front of the wall support, said wall-mounted housing comprises: - a first element presenting: - a first side wall comprising a first and second end; - a bottom wall transverse to the first side wall and arranged at the first end of the first side wall; - in the vicinity of its second end, a stop, called a "fixing plate", projecting towards the outside of the first side wall and intended to rest on the front of the wall support; said first side wall forming a housing arranged to be inserted into a cavity made in said wall support and to accommodate at least one ambient air measurement sensor, - a second element intended to be fixed on the first housing element, said second housing element having a side wall comprising a first and second end, said first end being arranged to be fixed against the fixing plate of the first housing element.

[0007] So that the ambient air sensor, thus embedded in the wall support, can be in fluid communication with the ambient air of the display and / or control device, said first and second elements of a housing according to the invention are mutually arranged to form an air circulation duct guiding a flow of air opening into the housing formed by the first side wall of the first element from an air intake made in the first and / or second element of said wall box.

[0008] To deliver to a human a result perceptible by the latter, said result being a function of said at least one ambient air measurement sensor, such a wall-mounted housing may comprise a human-machine interface having an active face and a rear face. In this case, the second housing element may comprise stops arranged transversely to said side wall of said second housing element and extending towards the inside thereof, said stops being positioned between the first and second ends of the side wall of said second housing element and arranged to form a support on the rear face of the human-machine interface.

[0009] To ensure fixing to the wall support, the fixing plate may include fixing holes arranged to accommodate fixing screws respectively for fixing said fixing plate to said wall support.

[0010] According to a preferred embodiment, the first housing element may comprise a rim in the form of a regular protrusion forming a second side wall transverse to the fixing plate, one of the ends of which is integral with said fixing plate and the second end of which comes into contact with the second element when the latter is fixed to the first housing element.

[0011] According to said preferred embodiment, the fixing plate of the first element may describe a channel bottom wall and two side walls facing each other and transverse to said channel bottom wall, said channel bottom wall and side walls mutually forming a channel opening, on the one hand, into the air intake and, on the other hand, into the housing formed by the first side wall of the first element. In this case, the second housing element forms or comprises a channel top wall arranged to cover said channel and form a conduit, when the first and second housing elements are fixed together.

[0012] Alternatively or additionally, the upper channel wall may comprise two side walls facing each other and transverse to said upper channel wall, said side walls being arranged to cooperate respectively with those forming the channel in the first housing element.

[0013] To facilitate the maintenance of a device comprising such a housing, the rim may comprise first closing elements which cooperate with second closing elements located on the second element.

[0014] The invention further relates to a display and / or control device comprising a human-machine interface and at least one ambient air measurement sensor, said device being intended to be fixed to a wall support and comprising a wall housing according to the invention and in which the at least one ambient air measurement sensor is mounted in the housing formed by the first side wall of the first housing element and the human-machine interface is mounted on the second housing element.

[0015] To facilitate the maintenance of such a display and / or control device, the latter may comprise a first connector fixed to the first housing element and a second connector fixed to the second housing element, the first and second connectors each comprising the same plurality of contacts and being positioned so as to establish electrical contact between the contacts of the first and second connectors when the second housing element is fixed to the first housing element, a first set of contacts of the first connector being electrically connected to the ambient air measurement sensor and the contacts of the second connector being electrically connected to the human-machine interface.

[0016] In order to be able to connect a display and / or control device according to the invention to communication buses, such a display and / or control device may comprise one or more terminal blocks for connection to a communication network, said terminal blocks being placed in the housing formed by the first side wall of the first housing element and being electrically connected to a second set of contacts of the first connector.

[0017] To power all or part of the electronic components of such a display and / or control device, the latter may comprise two power supply terminals intended to be connected to an electrical power supply network and a power supply circuit transforming a power supply voltage from the network into a power supply voltage for the human-machine interface, said power supply circuit being electrically connected to a third set of contacts of the first connector.

[0018] Preferably, the human-machine interface of a device according to the invention may consist of a touch screen and a processing unit, electrically connected to the second connector.

[0019] To reduce the costs of such a device according to the invention or increase tenfold the interactivity of the latter, the human-machine interface may comprise a communication interface with a remote electronic object whose screen or any form of suitable human-machine interface may constitute, together with said communication interface, the human-machine interface of said display and / or control device.

[0020] Preferably, the at least one ambient air sensor may be a sensor measuring the quantity of one or more elements present in the air, among a nitrogen oxide, a carbon oxide, a carbon dioxide, a fine particle, a bacterium, a virus. Brief description of the drawings

[0021] The invention will be better understood and other characteristics and advantages thereof will appear on reading the following description of particular embodiments of the invention, given as illustrative and non-limiting examples, with reference to the appended drawings, among which:

[0022] [Fig-1] shows a display and / or control device according to the invention;

[0023] [Fig.2] shows examples of mounting a display and / or control device illustrated by [Fig.l] on a wall or partition;

[0024] [Fig.3] shows a first bare housing element of a display and / or control device according to [Fig.l] in perspective;

[0025] [Fig.4] shows the first element of [Fig.3] provided with components constituting the display and / or control device of [Fig.l] in front view;

[0026] [Fig.5] shows a second housing element of the display and / or control device according to [Fig.l];

[0027] [Fig.6] shows the second housing element of [Fig.5] provided with a screen in perspective;

[0028] [Fig.7] shows the second housing element of [Fig.5] provided with a screen in rear view;

[0029] [Fig.8] shows a functional diagram of a display and / or control device according to [Fig.l]. Description of the embodiments

[0030] In order to simplify the description and understanding of the drawings, the same reference is used in different figures to designate the same object or a very similar object. Thus, an object referenced in several figures may only be described in detail in a single figure. Certain references will also be omitted from certain figures so as not to unnecessarily overload said figures. In addition, the figures and the description are given as non-limiting examples of a preferred embodiment.

[0031] [Fig.l] shows a display and / or control device 100 according to the invention in perspective. The display and / or control device 100 is integrated in a housing 100B comprising a first housing element 200 intended to be partially embedded and fixed to a wall support 400 (wall, partition, ceiling, floor) and a second housing element 300 supporting a human-machine interface 310. The human-machine interface 310 is preferably a screen, possibly touch-sensitive, which makes it possible to provide one or more functionalities, possibly by means of different menus or selection icons according to different known techniques. Such a human-machine interface 310 could, as a variant or in addition, comprise buttons, a microphone or any member capable of translating a human instruction. In the same way, as a variant or in addition, said human-machine interface 310 could be partially remote. A communication interface mainly comprising an antenna and an electronic controller, for example short or medium range, using communication protocols selected from a non-exhaustive set including Bluetooth, ZigBee or even WiFi, would be present in the housing 100B. The human-machine interface as such, that is to say for example a screen, could be that of an electronic object in wireless or wired communication with said communication interface resident in the housing 100B. Whatever its configuration, a human-machine interface 310 according to the invention is arranged to deliver to a human a result perceptible by the latter, said result being a function of at least one ambient air measurement sensor present in said housing 100B.

[0032] The device 100 can be fixed on a wall support 400 in different orientations, for example a vertical or “portrait” arrangement, as shown on the left of [Fig. 2], or in a horizontal or “landscape” arrangement, as shown on the right of [Fig. 2]. The arrangement with respect to the wall support will be adjusted according to the orientation of the graphical interface that the person skilled in the art or the person responsible for the installation will choose to use. As indicated in said [Fig. 2], the wall support 400 has at the front a more or less thin front wall 400F, for embedding any device in this wall support. Prior to receiving a device 100 according to the invention, the wall support 400 is prepared so that the front wall of said support is cut, for example using a hole saw, to describe a sufficient opening 400C to engage a part of the housing 100B of said device 100.Said box 100B may, like a flush-mounted box arranged to accommodate a switch or an electrical outlet, directly cooperate with the cavity 400C made in the wall support 400 or cooperate with such a flush-mounted box with suitable dimensions (not shown in [Fig.2]), that is to say, engage fixedly within the cavity 400C or said flush-mounted box.

[0033] According to the example illustrated by [Fig. 1], the device 100 has a rectangular cross-section adapted to a human-machine interface 310 in the form of a screen itself of rectangular shape so as to describe a frame surrounding said screen 310. The invention cannot be reduced to this choice of shape and dimensions. For example, a square-shaped screen could be chosen. The housing 100B supporting said screen 310 could also not faithfully match that of said screen, such as a frame as indicated in [Fig. 1], but describe other shapes having curved lines, for example, for aesthetic considerations.

[0034] A housing 100B of a device 100 according to the invention mainly comprises two elements 200 and 300 mutually arranged to be fixed against each other. The first element 200, the main function of which may be similar to that of a flush-mounted box, is arranged to cooperate with the wall support 400 and house electrical or electronic elements, such as a controller and / or one or more ambient air measurement sensors. Such an element 200 is illustrated jointly by Figures 3 and 4. [Fig. 3] shows the first element 200 of the housing 100B in perspective. [Fig. 4] shows the first element 200 provided with the components constituting the display and / or control device 100 in front view. The second housing element 300 is detailed using Figures 5 to 7. [Fig. 5] shows the second element 300 bare in perspective. [Fig. 6] shows the second element 300 provided with a human-machine interface 310 constituting the display and / or control device 100 in perspective. [Fig.7] shows said second element 300 provided with the human-machine interface 310 in rear view. A functional diagram of the display and / or control device 100 is shown in [Fig.8].

[0035] The first element 200 is intended to be fixed on a wall support 400. According to Figures 3 and 4, said first element 200 has a side wall 221 and a bottom wall 222 arranged transversely to the side wall 221. The latter has a first and second end. More precisely, the bottom wall 222 is arranged at the first end of the side wall 221. Said side wall describes an oblong or rectangular section shape with rounded corners. The side wall 221 has in the vicinity of its second end a stop 210 projecting towards the outside of the side wall such as a fixing plate 210 intended to bear on the front of the wall support 400. To ensure fixing to the wall support 400, the fixing plate 210 may be provided with holes 211 intended to receive fixing screws or other fixing means of a known type.Preferably, the holes 211 may be arranged around the housing 220 and correspond to fixing positions of a wall-mounted box for an electrical device, and in particular a double-mounted box. The holes 211 may be oblong in order to allow for the recovery of any existing clearance with holes drilled in the wall bracket. The holes 211 are not necessary if the fixing to the wall bracket 400 is ensured by another means, for example by gluing.

[0036] The first element 200 describes by its side wall 221 a housing 220 located, according to the shape of said plate 210 in a central or eccentric zone of the fixing plate 210 according to the arrangement of the latter and extending from the fixing plate 210 towards the bottom wall of said housing. In the preferred example according to [Fig. 3], the side wall of the element 200 may comprise openings or windows 223 to be crossed by cables placed inside the wall support 400 which are intended to be connected to the display and / or control device 100 and / or allow the passage of a separation which may be present on certain double wall flush-mounted boxes. The same may apply to the back wall 222.

[0037] As shown in Figures 5 and 6, the second element 300 of a housing according to the invention may consist mainly of a frame 320. According to the example illustrated by [Fig.5], said second element 300 has a side wall 320 of low height, that is to say slightly greater than the thickness of the man-machine interface 310. Said side wall 320 has a first and second end. The first end is arranged to be fixed against the fixing plate 310 of the first element 200. The second end may comprise an internal shoulder 323 to match the contour of the active face of the human-machine interface 310 and form, together with the active face of the human-machine interface 310, the front of the display and / or control device 100. Said element 300 comprises stops 321 arranged transversely to the side wall 320 and extending towards the inside thereof.Said stops 321 are positioned between the first and second ends of the side wall 320. More precisely, the stops 321 are arranged so that, when the rear face of the human-machine interface 310 bears against them, the active face of the latter is flush with the second end of the side wall 320. The stops 321 may comprise tabs 322 or transverse protrusions facing the side wall 320, to ensure the fixing from the rear of a human-machine interface 310, such as a screen or a touch pad, for example by screwing. Instead, such tabs 322 could be replaced by clips limiting the travel of said human-machine interface along the side wall 320. Alternatively or additionally, said human-machine interface could be fixed by gluing.

[0038] In the preferred example illustrated by Figures 3 and 4, the periphery of the fixing plate 210 (or stop of the side wall 221) of the first element 200 describes a rim 230 moving away from the wall support 400 arranged to come into contact with the first end of the side wall 320 (or frame) of the second element 300 according to [Fig. 5]. Such a rim 230 consists of a regular protrusion forming a second side wall transverse to the fixing plate 210, one of the ends of which is integral with said fixing plate and the other end of which is intended to come into contact with the second element 300. Said rim 230 may comprise first closing means 231 cooperating with second closing means 331 located on the second element 300.Thus, the first element 200 can be securely fixed to a wall support 400 and the second element 300 can be fixed there in turn by cooperating with the first element 200, more precisely with said rim 230, in a simple manner without any screw passing through the front of the device. 100, i.e. the front of the display and / or control device 100.

[0039] By way of example, the first closure means 231 may for example be composed of two hooks and a screwing plate mounted on two opposite sides of the rim 230, as shown in Figures 3 and 4. The second closure means 331 may be hooks cooperating with the hooks of the first closure means 231 and a screwing plate located in a recess of the transverse wall 320 to receive a screw head, said screw being transverse to the transverse wall 320 of the second element 300. However, any other closure means could be envisaged, the first closure means 231 being for example elastic hooks clipping into notches forming the second closure means 331 of the second element 300.

[0040] The housing 220 described by the side wall 221 of the first housing element 200 is intended to receive one or more ambient air measurement sensors 520. This or these sensors 520 being generally relatively bulky, the fact of being able to embed them in a wall support 400 makes it possible to reduce the thickness of the device 100 projecting from the front of said wall support. However, such an ambient air measurement sensor 520 requires an air intake in order to suck in air and measure one or more quantities of interest, for example the content of nitrogen oxide (NOx), carbon oxide (COx), carbon dioxide (CO2), or even detect the presence of fine particles, bacteria, etc.Embedding such a sensor 520 in the wall support within the housing 220 described by the side wall of the element 200 reduces the size of a device 100 projecting from the wall support 400 but de facto deprives said sensor 520 of a sufficient air supply to carry out measurements when the element 300 is applied against the element 200. The invention provides for constituting one or more air circulation ducts mutually formed by the first element 200 and the second element 300 when the latter are fixed against each other. Such an air circulation duct makes it possible to guide an air flow towards an ambient air measurement sensor 520 from one or more lateral air intakes 241 made in the side wall or frame 320 of the second element 300 of the housing and / or in the rim 230 of the stop or fixing plate 210 of the first element 200.

[0041] According to a particular embodiment, an air circulation duct may be formed by a channel bottom wall 242 transverse to two side walls 240 facing each other, arranged in the stop or fixing plate 210, forming a channel opening, on the one hand, at the air intake 241 and, on the other hand, into the housing 220. An upper wall 340 is arranged in the second housing element 300 to cover said channel and form a duct when said second housing element 300 is placed on the first housing element 200. Such an upper wall 340 may be produced in the form of a surface 340, transverse to the side wall 320 and extending inwardly therefrom, of the second housing element 300. Such a second housing element 300 might not be arranged as a single physical entity and might have a plurality of separate sub-elements. Thus, in a non-exhaustive manner, said surface 340 of said second housing element 300 could be separate from the side wall or frame 320 and be attached, by gluing or any other method of attachment, to a channel arranged in the first housing element 200 and form a conduit, in addition to the attachment of the rest of the sub-elements of said second housing element 300 to said first housing element 200. Alternatively or additionally, the side walls of such a conduit could be arranged, in whole or in part, at the level of the second housing element 300.Alternatively, the channel bottom walls 242 and side walls 240 could form only one physical entity, so that said channel could be formed by a wall substantially describing a half-cylinder. Thus, more generally, said first 200 and second 300 housing elements are mutually arranged to form, when applied against each other, jointly one or more air circulation ducts from one or more side air intakes to the housing 220 housing one or more sensors 520. An air intake 241 may be screened in order to prevent the accidental introduction of flies or mosquitoes or other elements whose dimensions could block the air circulation duct(s) and / or damage any sensor 520.

[0042] According to a preferred embodiment, the surface 340 may be a part formed from a waterproof and deformable material bonded to the rear of the second element 300, that is to say in the vicinity of the first end of the side wall 320, after the mounting of the human-machine interface 310. Such a surface 340 may be made from rubber or an elastic polymer. Such a material of the surface 340 makes it possible to bear on the side walls 240 of a channel and form a sealed conduit up to the air sensor 520, the air coming from the outside being guided without being altered by the air trapped in the housing 100B. However, if it is not necessary for said conduit to be perfectly waterproof, the surface 340 may simply bear on or be flush with the side walls 240.

[0043] An ambient air sensor 520 can thus suck in, through the conduit thus formed, outside air from a lateral air intake 241. The sucked in air is then discharged, once the measurement has been carried out, inside the housing. To avoid excess pressure inside the housing which could harm the sensor 520, the rim 230 and / or the side wall 320 may comprise ventilation openings 250 allowing air to escape from the housing 100B.

[0044] The housing 220 also makes it possible to accommodate other elements of the display and / or control device 100. Thus, a power supply circuit 530 can be placed in said housing 220. Such a power supply circuit 530 can comprise two terminals 531 intended to receive two mains power supply wires coming out of the wall support 400. The purpose of the power supply circuit 530 is to transform the voltage coming from the mains into a power supply voltage for the electrical and / or electronic components of a device 100.

[0045] To be able to make a device 100 communicate with the outside world, a display and / or control device 100 may comprise a first terminal block 540 of the RJ45 type for receiving an Ethernet cable. Such a terminal block 540 may be placed near the bottom wall 221 of the element 200.

[0046] A display and / or control device 100 may also be connected to a serial type control bus used to control one or more heating, air conditioning or home automation devices. The serial bus may use a communication protocol, for example of the Modbus RTU type. The connection may have four connectors in order to be integrated in the middle of a serial bus. For this purpose, the display and / or control device 100 may comprise a second terminal block 550, for example of the RJ45 type, to receive an Ethernet connection cable coming from the wall mount 400. The second terminal block 550 may also be placed near the first terminal block 540.

[0047] As mentioned previously, a display and / or control device 100 may, as a variant or in addition, comprise a communication interface mainly comprising an antenna and an electronic controller, for example short or medium range, using communication protocols selected from a non-exhaustive set including Bluetooth, ZigBee or even WiFi. Such a communication interface would be present in the housing 100B, the human-machine interface as such, that is to say for example a screen, could be that of a communicating electronic object such as a smartphone, a touch tablet or a personal computer, in wireless communication with said communication interface resident in the housing 100B.

[0048] To avoid the use of connecting wires between the human-machine interface 310 and the various electronic elements placed in the housing 220 of the first element 200, the latter may comprise a first connector 560 intended to cooperate with a second connector 570 secured to the second element 300. The first connector 560 is positioned on the fixing plate 210 at a position corresponding to the position of the second connector 570 which rests on the rear of the human-machine interface 310 so that, when the second element 300 is positioned on the first element 200, the first and second connectors 560 and 570 connect naturally. As can be seen in [Fig. 8], the various contacts of the first connector 560 are respectively connected to the sensor 520, to the power supply circuit 530, to the first terminal block 540 and to the second terminal block 550. The second connector 570 is electrically connected to a central processing unit 510 which includes communication interface circuits as well as a communication port with the sensor 520.

[0049] Such a configuration of housing 100B for a display and / or control device 100 thus makes it easier to maintain. Indeed, opening the housing 100B can be done easily without the risk of tearing off wires connecting the human-machine interface 310 to the various electronic components located within the first element 200. This can, for example, make it possible to change the air sensor 520 to replace it with a more efficient one quite simply. Furthermore, the part coming out of the wall is not very large, the elements requiring a certain thickness being inside the wall 400.

[0050] The exemplary embodiment describes the use of a single air sensor and a single air circulation duct. However, it is possible to add a second air sensor and a second air circulation duct, or even to provide several air circulation ducts for the same sensor.

[0051] Furthermore, according to some concessions on the thickness of the stop 210 forming a fixing plate of the housing 100, an air circulation duct, as well as the air intake which supplies the latter could be made only in the thickness of said stop 210, the first housing element 200 ensuring, independently of the second housing element 300, the constitution of an air circulation duct. However, to reduce the thickness of the housing 100B projecting from the facade 400F of the wall support 400, a mutual arrangement of said elements 200 and 300 of the housing 100B will be favored to jointly constitute such a duct.

[0052] Finally, when the part of the human-machine interface 310 residing in the housing 100B is reduced to its simplest expression (for example in the form of a module or a communication interface integrated in the housing 220 formed by the first housing element 200 or in the second housing element 300, with a remote electronic object) the distal end of the side wall 320 of the second housing element 300 100B forming the front of said housing 100B may consist of a solid front wall 323 such as a closing cover of said housing 100B.A material will then be preferred for constituting such a facade wall, the characteristics of which do not impair the communication capacity of a display and / or control device 100 in accordance with the invention, i.e. any material and any structure which does not form a Faraday cage or a shield likely to impair the communication between said display and / or control device 100 and a communicating electronic object located within communication range of the latter and whose screen or any other suitable human-machine interface (screen, button, microphone, loudspeaker, etc.) constitutes a remote part of the human-machine interface 310 of the display and / or control device 100 in accordance with the invention.

Claims

Claims

1. Wall-mounted housing (100B) of a display and / or control device (100) comprising at least one ambient air measurement sensor (520), said housing (100B) being intended to be fixed on a wall support (400), said wall-mounted housing (100B) comprising: - a first housing element (200) having: - a first side wall (221) comprising a first and second end; - a bottom wall (222) transverse to the first side wall (221) and arranged at the first end of the first side wall (221); - in the vicinity of its second end, a stop (210), called a “fixing plate”, projecting towards the outside of the first side wall (221) and intended to bear on the front (400F) of the wall support (400); said first side wall (221) and said bottom wall (222) forming a housing (220) arranged to be inserted into a cavity (400C) made in said wall support (400) and to accommodate at least one ambient air measurement sensor (520), - a second housing element (300) intended to be fixed on the first element (200), said second element (300) having a side wall (320) comprising a first and second end, said first end being arranged to be fixed against the fixing plate (210) of the first housing element (200); said wall box (100B) being characterized in that said first (200) and second (300) elements are mutually arranged so that, when the second housing element (300) is fixed on the first housing element (200), said first (200) and second (300) elements form an air circulation duct guiding an air flow opening into the housing (220) formed by the first side wall (221) of the first housing element (200) from an air intake (241) made in the first (200) and / or second element (300) of said wall box (100B).

2. Wall-mounted box according to claim 1 comprising a human-machine interface (310) and in which, - the human-machine interface (310) has an active face and a rear face; - the second housing element (300) comprises stops (321) arranged transversely to said side wall (320) of said second housing element (300) and extending towards the inside thereof, said stops (321) being positioned between the first and second ends of the side wall (320) of said second housing element (300) and arranged to form a support on the rear face of the human-machine interface (310).

3. A wall-mounted box according to claim 1 or 2, wherein the fixing plate (210) has fixing holes (211) arranged to respectively receive fixing screws for fixing said fixing plate (210) to said wall bracket (400).

4. Wall box according to any one of the preceding claims, in which the first box element (200) comprises a rim (230) in the form of a regular protrusion forming a second side wall transverse to the fixing plate (210), one of the ends of which is integral with said fixing plate (210) and the second end of which comes into contact with the second box element (300) when the latter is fixed on the first box element (200).

5. Wall-mounted box according to any one of the preceding claims, wherein: - the fixing plate (210) of the first box element (200) describes a channel bottom wall (242) and two side walls (240) facing each other and transverse to said channel bottom wall, said channel bottom wall (242) and side walls (240) mutually forming a channel opening, on the one hand, into the air intake (241) and, on the other hand, into the housing (220) formed by the first side wall (221) of the first box element (200); - the second box element (300) forms or comprises a channel top wall (340) arranged to cover said channel and form said air circulation duct, when the first and second box elements (200 and 300) are fixed together.

6. A wall-mounted enclosure according to claim 5, wherein the channel top wall (340) comprises two side walls facing each other and transverse to said channel top wall, said side walls being arranged to cooperate respectively with those (240) forming the channel in the first enclosure element (200).

7. A wall box according to claim 4 or one of claims 5 to 6 as dependent on claim 4, wherein the flange (230) comprises first closure elements (231) cooperating with second closure elements (331) located on the second housing element (300).

8. Display and / or control device (100) comprising a human-machine interface (310) and at least one ambient air measurement sensor (520), said device (100) being intended to be fixed on a wall support (400) characterized in that it comprises a wall housing (100B) according to one of claims 1 to 7 and in which the at least one ambient air measurement sensor (520) is mounted in the housing (220) formed by the first side wall (221) of the first housing element (200) and the human-machine interface (310) is mounted on the second housing element (300).

9. A display and / or control device (100) according to claim 8, which comprises a first connector (560) attached to the first housing element (200) and a second connector (570) attached to the second housing element (300), the first and second connectors (560, 570) each comprising a same plurality of contacts and being positioned so as to establish electrical contact between the contacts of the first and second connectors (560, 570) when the second housing element (300) is attached to the first housing element (200), a first set of contacts of the first connector (560) being electrically connected to the ambient air measurement sensor (520) and the contacts of the second connector (570) being electrically connected to the human-machine interface (310).

10. Display and / or control device according to claim 9, which comprises one or more terminal blocks (540, 550) for connection to a communication network, said terminal blocks (540, 550) being placed in the housing formed by the first side wall (221) of the first element (200) and being electrically connected to a second set of contacts of the first connector (560).

11. Display and / or control device according to claim 9 or 10, which comprises two power supply terminals intended to be connected to an electrical power supply network and a power supply circuit (530) transforming a supply voltage of the network into a supply voltage for the human-machine interface (310), said power supply circuit (530) being electrically connected to a third set of contacts of the first connector (560).

12. Display and / or control device according to one of the claims- dications 9 to 11, wherein the human-machine interface (310) consists of a touch screen and a processing unit (510), electrically connected to the second connector (570).

13. Display and / or control device according to one of claims 8 to 12, in which the human-machine interface (310) comprises a communication interface with a remote electronic object whose screen or any form of suitable human-machine interface constitutes, together with said communication interface, the human-machine interface (310) of said display and / or control device (100).

14. Display and / or control device according to one of claims 8 to 13, wherein the at least one ambient air sensor (520) is a sensor measuring the quantity of one or more elements present in the air, among a nitrogen oxide, a carbon oxide, a carbon dioxide, a fine particle, a bacterium, a virus.

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