Digital signage

Abstract

Disclosed is digital signage (100, 300) comprising housing (102) comprising display portion (104), base portion (106) and airflow spoiler (AS) (108, 200), wherein display portion comprises first display arrangement (110), second display arrangement (112), heat exchanger (114) arranged, first air channel (FAC) (116), for enabling first ambient airflow (FAA) (118) therein, second air channel (SAC) (120), for enabling first amount (122) of FAA therein, third air channel (TAC) (124), for enabling second amount (126) of FAA therein, first fan array (128) configured for extracting first ambient air to enable first and second amounts of FAA from FAC to pass through SAC and through TAC; base portion comprises first electronic box (FEB) (130) and second electronic box (SEB) (132), fourth air channel (134) between FEB and SEB, fifth air channel (136), for enabling second ambient airflow (SAA) (138) therein, sixth air channel (140), for enabling third ambient airflow (TAA) (142) therein, second fan array (144) configured for extracting second ambient air and third ambient air to enable SAA from fifth air channel and TAA from sixth air channel to pass through fourth air channel; and airflow spoiler arranged configured to direct first and second amounts of FAA from FAC to SAC and to TAC, respectively, SAA from fifth air channel and TAA from sixth air channel to fourth air channel, wherein airflow spoiler is configured to prevent FAA from FAC to mix with SAA and TAA.

Description

[0001] DIGITAL SIGNAGE

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to digital signages.

[0004] BACKGROUND

[0005] Conventionally, effective cooling of electronic components in a digital signage is critical for maintaining their performance and longevity. Traditionally, cooling systems for the digital signage rely on airflow to dissipate heat generated by the electronic components therein. In some existing solutions, the airflow is directed from one part of the digital signage to another, carrying heat away from the electronics and exhausting it outside the digital signage.

[0006] However, in the existing solutions a path of the airflow is directed downwards with employed fans from a display unit at top of the digital signage to an electronics box at bottom of the digital signage, in which air is drawn from the ambient environment, and passed over the components in the display unit, and then flows down to cool the electronics box. Although, the existing solutions have certain limitations, particularly in scenarios where the heat load is significant or where the electronic components generate substantial amounts of heat. Firstly, when the upper airflow, which becomes heated after passing over the top display unit, is directed towards the lower electronics box. Subsequently, the heated airflow increases the temperature of the incoming air intended to cool the electronics box, thereby reducing the overall cooling efficiency of the digital signage. Consequently, the electronics box does not receive adequate cooling, leading to potential overheating and reduced operational reliability. Therefore, in light of the foregoing discussion, there exists a need to overcome the aforementioned drawbacks.

[0007] SUMMARY

[0008] The aim of the present disclosure is to provide a digital signage to prevent mixing of airflows by redirecting the airflows. The aim of the present disclosure is achieved by a digital signage as defined in the appended independent claims to which reference is made to. Advantageous features are set out in the appended dependent claims.

[0009] Throughout the description and claims of this specification, the words "comprise" , "include", "have", and "contain" and variations of these words, for example "comprising" and "comprises" , mean "including but not limited to", and do not exclude other components, items, integers or steps not explicitly disclosed also to be present. Moreover, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.

[0010] BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 is a schematic illustration of a digital signage, in accordance with an embodiment of the present disclosure;

[0012] FIG. 2 is a schematic illustration of an airflow spoilage, in accordance with an embodiment of the present disclosure; and

[0013] FIG. 3 is a schematic illustration of an implementation of a digital signage, in accordance with an embodiment of the present disclosure.

[0014] DETAILED DESCRIPTION OF EMBODIMENTS

[0015] The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognize that other embodiments for carrying out or practising the present disclosure are also possible.

[0016] In a first aspect, the present disclosure provides a digital signage comprising: a housing, having a first side and a second side, comprising a display portion, a base portion and an airflow spoiler, wherein: the display portion comprises: a first display arrangement, a second display arrangement, a heat exchanger arranged between the first display arrangement and the second display arrangement, a first air channel, located centrally along the heat exchanger, for enabling a first ambient airflow therein, a second air channel, for enabling a first amount of the first ambient airflow therein, a third air channel, for enabling a second amount of the first ambient airflow therein, a first fan array configured for extracting first ambient air to enable the first and second amounts of the first ambient airflow from the first air channel to pass through the second air channel and through the third air channel, respectively; the base portion comprises: a first electronic box and a second electronic box, occupying a part of the base portion such that a fourth air channel is formed between the first electronic box and the second electronic box, a fifth air channel, for enabling a second ambient airflow therein, a sixth air channel, for enabling a third ambient airflow therein, a second fan array configured for extracting a second ambient air and a third ambient air to enable the second ambient airflow from the fifth air channel and the third ambient airflow from the sixth air channel to pass through the fourth air channel; and the airflow spoiler, arranged between the display portion and the base portion, configured to direct: the first and second amounts of the first ambient airflow from the first air channel to the second air channel and to the third air channel, respectively, the second ambient airflow from the fifth air channel and the third ambient airflow from the sixth air channel to the fourth air channel, wherein the airflow spoiler is configured to prevent the first ambient airflow from the first air channel to mix with the second ambient airflow and the third ambient airflow, and each of the first, second and third ambient airflows maintain a laminar flow while exiting the digital signage.

[0017] The present disclosure provides an aforementioned digital signage that significantly enhances a cooling efficiency of the digital signage. Moreover, the airflow spoiler in the digital signage is able to effectively separate the first ambient airflow from the second ambient airflow and the third ambient airflow, respectively, which prevents the heat absorbed from the display portion from escaping to the base portion. Furthermore, the second ambient airflow and the third ambient airflow that is used to cool the base portion is clean which enables to remove the requirement of additional air filters in the digital signage.

[0018] Throughout the present disclosure, the term " digital signage" refers to an arrangement of mechanical, electronic, software and firmware components configured for displaying information (such as, advertisements, alerts, news, etc.) on either side to allow user(s) to view from multiple angles and / or locations. The digital signage is designed to cater for indoor, as well as outdoor environmental conditions such as, weather, temperature, water, humidity, wind loading, etc. and configured to withstand robust environments e.g., harsh environmental conditions such as, high humidity, extreme temperatures, vandalism and / or accidents. The digital signage can be clearly viewed by a mass audience from varying distances and requires varied fixing mechanisms to suit the varied implementational requirements such as, but not limited to, ground fixation (with suitable foundations), wall mounting, integration with external structures e.g., bus-stops, train stations, etc.

[0019] Throughout the present disclosure, the term "housing" refers to a rigid structure (or casing) configured for housing and protecting various elements of the digital signage. It will be appreciated that the housing isolates the sensitive elements of the display portion and the integrated circuit from the environmental influences. Herein, the housing has the first side and the second side. The housing being a three-dimensional structure comprises other sides as well, i.e., a front-side and a back side, each covering at least one display arrangement, but are not explained herein on account of obviousness and brevity of the disclosure. Typically, the housing hermetically seals the digital signage to protect the same from moisture, high degree of suspended particles in the surrounding air, and the like. Moreover, the hermetical sealing provided by the housing eliminates the cost of filters usage, a preventive ambient sterilization and an overall maintenance of the digital signage. The housing may be mechanically coupled, or detachably coupled, with a ground surface, or any other external surface, for firmly holding the various elements of the digital signage. For example, the housing may be mechanically coupled via bolts, rivets, or fasteners. The housing is shaped and sized to accommodate various elements of the digital signage and may be varied based on the implementational requirements of the present disclosure. In one embodiment, the housing has a cuboidal shape with a length (I), breadth (b) and a height (h), wherein the exact shape and dimensions of the housing are dependent upon the shape and a size of elements being employed in the digital signage. With the advent of increasingly large displays, it will be appreciated that the dimensions of the housing are dependent upon the size of the display(s) being employed and may be varied without any limitations to the present disclosure. Further, the material used for the construction of the housing may be selected based on cost constraints, or implementational requirements and may include, but are not limited to, a metal or an alloy such as, but not limited to, iron, aluminium, titanium, steel, silicon, etc., or a combination thereof. The housing may comprise multiple recesses (or slots), doors, panels, subhousings, plates, fasteners, gears, hinges, etc., for enabling operation of the digital signage and are not explained herein since being well known in the art and for brevity of the disclosure.

[0020] Throughout the present disclosure, the term "display portion" refers to a part of the housing having the display(s) being employed in the digital signage and various components associated therewith, and the "base portion" refers to another part of the housing configured for housing various components required for functionality of the digital signage. For example, the display portion comprises the display(s) being used therein and other components attached therewith such as, lighting, back panels, heat exchangers, etc., whereas the base portion comprises the electronic circuitry required for the display(s), and other functionality components such as, fans, exhausts, etc.

[0021] Herein, each of the first display arrangement and the second display arrangement comprises at least an electronic display, and a backlight array, respectively, i.e., the first display arrangement comprises a first display, and a first backlight array, and the second display arrangement comprises a second display and a second backlight array. The term "display arrangement" as used herein refers to a part of the digital signage formed via the combination of display(s) and associated electronic and mechanical components required for operation. For example, each display arrangement may comprise a display, a backlight array, an optical element, and electrical circuitry associated therewith. The second display arrangement is arranged at a distance 'w' from the first display arrangement, such that other components of the digital signage may be arranged therebetween, for example, heat exchangers, air channel, electrical components, and the like. It will be appreciated that the electronic components may be a metal-oxide-semiconductor field-effect transistor (MOSFET), diode, capacitor, inductor, resistor, CPU, processors, power converters, SDI modules, heat pads, heatsinks, heaters, and other electronic components. The term "electronic display" as used herein refers to an electronic display screen that displays visual information transmitted electronically using wired or wireless sources. The electronic display may be connected to a power supply for its intended continuous use. The first display and the second display may comprise a variety of shapes and sizes, for example, but not limited to, 19 inches ("), 32", 41", 55", 65", 72", 75", 85", 98", 100", 105", 210", 420", and the like. In one or more embodiments, the first display arrangement or the second display arrangement comprises a display selected from one of Liquid Crystal Display (LCD), In-Plane Switching Liquid Crystal Display (IPS-LCD), Light Emitting Diode (LED) display, Organic Light-Emitting Diode (OLED) display, and Active-Matrix Organic Light-Emitting Diode (AMOLED) display.

[0022] Throughout the present disclosure, the term "heat exchanger" refers to a device or an arrangement of components operable for exchanging heat between two mediums, whilst preventing direct contact therebetween. The heat exchanger is arranged in the space (w) between the first display arrangement and the second display arrangement such that the heat exchanger may effectively exchange heat therefrom. For example, the heat exchanger is configured to transfer heat from a source (such as, the first display arrangement or the second display arrangement) to a fluid (such as, air, water, or any other coolant). The heat exchanger may be a dedicated device. Alternatively, heat exchange functionality may be provided by an arrangement of components in the digital signage or housing, for example, the display(s) being employed therein. Herein, with respect to the displays being used via the digital signage, the heat exchange function may be provided in different areas of the housing, for example, adjacent to a display side or a back side of the display arrangement(s), adjacent to an electronic assembly, and the like, and may be provided as parts of a common heat exchanger, or as individual heat exchangers arranged within the housing. The size and shape of the heat exchanger corresponds to the size and shape of the first display arrangement or the second display arrangement. For example, the first display arrangement having a first display with a display size of 75" has a heat exchanger having a size of 75".

[0023] In one or more embodiments, the heat exchanger, is selected from one of: a heat sink, a plate heat exchanger, a plate and shell heat exchanger, an adiabatic wheel heat exchanger, a plate fin heat exchanger, a finned tube heat exchanger, a pillow plate heat exchanger, a parallel flow heat exchanger, a counter flow heat exchanger, a cross flow heat exchanger, a helical coil heat exchanger, spiral heat exchanger and a double tube heat exchanger. Preferably, the heat exchanger is a heat sink i.e., a passive heat exchanger configured to transfer the heat generated from the first display arrangement and the second display arrangement via air flow generated in the digital signage. However, it will be appreciated that other types of exchangers may be interchangeably used either separately, or in conjunction with one or more different types of heat exchangers without limiting the present disclosure. In one or more embodiments, the heat exchanger is selected based on at least one of allowable pressure limits, thermal performance, temperature ranges, fluid medium, pressure drops across the heat exchanger, fluid flow capacity and material selection. Typically, the digital signage comprises operational limits (such as, allowable pressure limits, temperature ranges, etc.) within which the digital signage may operate and therefore to maintain the conditions within such limits, an appropriate type of heat exchanger may be selected from the aforementioned heat exchangers based on the implementational requirements. The digital signage of the present disclosure employs air as the fluid medium for extracting the heat from the display(s) of the respective display arrangements. However, optionally, other types of fluid mediums such as, liquids, particulates, or high-solids liquid, may also be utilized either in place of the air flow, or in conjunction therewith, without limiting the scope of the present disclosure.

[0024] Throughout the present disclosure, the term "first ambient airflow" refers to a flow of the first ambient air from the external atmosphere of the digital signage into the first air channel inside the digital signage. Throughout the present disclosure, the term "first air channel" refers to a space (or region) between the first display arrangement and the second display arrangement configured for allowing the first ambient (or external) airflow within the display portion in order to cool the display portion. The first air channel is located centrally along the heat exchanger to allow exchange of heat from each of the first display arrangement and the second display arrangement in an efficient manner. However, the first air channel may be divided into sub-channels for exchanging heat individually from the first and second display arrangements. The first air channel is shaped as a cuboid owing to the shape of the first display and the second display; however, it will be appreciated that the shape of the first air channel may be varied via addition of spacer elements along the first air channel, or on account of different shapes of the corresponding display(s) used in the digital signage. Throughout the present disclosure, the term "first portion of the first ambient airflow" refers to a certain amount of the first ambient airflow that moves into the second air channel. Throughout the present disclosure, the term "second air channel" refers to a space (or region) below the first display arrangement for allowing the first amount of the first ambient airflow below the first display arrangement for providing an exit to the first amount of the first ambient airflow from the digital signage. The second air channel is shaped as a cuboid owing to the shape of the first display; however, it will be appreciated that the shape of the second air channel may be varied via addition of spacer elements along the second air channel, or on account of different shapes of the corresponding display(s) used in the digital signage.

[0025] Throughout the present disclosure, the term "second portion of the first ambient airflow" refers to another amount of the first ambient airflow that remains after excluding the first amount of the first ambient airflow from the first ambient airflow, where the second amount of the first ambient airflow moves into the third air channel. Throughout the present disclosure, the term "third air channel" refers to a space (or region) below the second display arrangement for allowing the second amount of the first ambient airflow below the second display arrangement for providing an exit to the second amount of the first ambient airflow from the digital signage. The third air channel is shaped as a cuboid owing to the shape of the second display; however, it will be appreciated that the shape of the third air channel may be varied via addition of spacer elements along the third air channel, or on account of different shapes of the corresponding display(s) used in the digital signage.

[0026] Throughout the present disclosure, the term "first fan array" refers to one or more set of fans moving in a preferred direction to extract the first ambient air from the surroundings. The first fan array is configured to extract the first ambient air (or atmospheric air) from the surrounding environment to circulate the first and second amounts of the first ambient airflow through the second air channel and through the third air channel, respectively. Herein, the fans in the first fan array may be of similar sizes, or of different sizes, based on requirement and the size selection may be done to improve the cooling efficiency of the digital signage. Typically, different sizes of fans of the first fan array offer different fan speeds and thus, enabling generation of different air flow rate for each type of air flow in order to ensure proper circulation throughout the display portion. The first fan array comprises fans having a size (or diameter) in the range of 60 millimetres (mm) to 150mm. In an embodiment, the first fan array comprises fans having a size of 92mm. In another embodiment, the first fan array comprises fans having a size of 60mm. The first fan array may have a dedicated power source that may or may not be the same as that of the first display arrangement and the second display arrangement. Beneficially, a greater heat exchanger efficiency can be achieved by adjusting the air flow(s) through the air channel(s) within the housing by adjusting the individual fan speeds of each fan of the fan array.

[0027] The differential fan speeds (and associated volume of the air flow(s)) are adjusted relative to each other to maximize the temperature differential within the digital signage as a whole. Further, with an increase in the fan speed of first fan array, the velocity of air flow is increased and as a result, the cooling efficiency of the digital signage is increased. Notably, the fan speed of the first fan array is to be increased only to a predefined limit, such that the higher friction generated on account of the increase in fan speed does not impede the cooling efficiency of the digital signage. Moreover, variation in fan speeds may be based on ambient temperatures i.e., when the ambient temperature is low, the fan speeds of first fan array is lowered in order to preserve power and improve the efficiency of the digital signage and similarly, when the ambient temperature is high, the fan speeds of the first fan array is raised in order to increase the cooling efficiency of the digital signage. Additionally, optionally, via adjustment of the air flow(s) across all available air flow channels (i.e., by adjusting individual fan speeds), the efficiency of the heat exchanger increases and thereby allows a greater amount of heat to be extracted from the first ambient airflow for a given size heat exchanger. Moreover, optionally, as an alternative to varying fan speeds, fans may be operated at a fixed or predetermined speed and switched alternately on and off (e.g., via a variable duty cycle) to control the flow rate of the first ambient airflow through the heat exchanger.

[0028] Throughout the present disclosure, the term "first electronic box" refers to an integrated electrical circuitry of the digital signage configured for supplying power to each of the elements of the digital signage. In an example, the first electronic box is configured to supply power to the first display arrangement. The first electronic box of the digital signage is arranged beneath the display portion i.e., under the first display arrangement. Beneficially, the arrangement of the first electronic box in the base portion reduces the overall physical footprint i.e., reduces the breath of the digital signage and provides modularity to the digital signage such that if the first electronic box malfunctions, it may be easily removed without first having to remove the display arrangements as required in conventional solutions. Throughout the present disclosure, the term "second electronic box" refers to an integrated electrical circuitry of the signage configured for supplying power to each of the elements of the digital signage. In an example, the second electronic box is configured to supply power to the second display arrangement. The second electronic box of the digital signage is arranged beneath the display portion i.e., under the second display arrangement. Beneficially, the arrangement of the second electronic box in the base portion reduces the overall physical footprint i.e., reduces the breadth of the digital signage and provides modularity to the digital signage such that if the second electronic box malfunctions, it may be easily removed without first having to remove the display arrangements as required in conventional solutions. Moreover, the first electronic box and the second electronic box occupies a part of the base portion such that the fourth air channel is formed between the first electronic box and the second electronic box. Throughout the present disclosure, the term "fourth air channel" refers to a space (or region) between the first electronic box and the second electronic box configured for allowing the second ambient (or external) airflow and the third ambient airflow within the base portion in order to cool the base portion. The fourth air channel is shaped and sized based on the shape of the first electronic box and the second electronic box, and in an embodiment, wherein the first electronic box and the second electronic box are shaped as a trapezoidal prism, the fourth air channel is shaped as an inverted "C" curve. Optionally, the first electronic box and the second electronic box are shaped as one of a trapezoidal prism, a trapezoidal pyramid, a paraboloid, an ellipsoid, a cuboid, a cylinder, or a frustrum of a cone. However, the shape of the first electronic box and the second electronic box may be varied without any limitations to the present disclosure.

[0029] Throughout the present disclosure, the term "second ambient airflow" refers to a flow of the second ambient air from the external atmosphere of the digital signage into the fifth air channel inside the digital signage. Throughout the present disclosure, the term "fifth air channel" refers to a space (or region) above the first electronic box for enabling the second ambient airflow above the first electronic box for cooling the first electronic box by absorbing heat from the first electronic box. The fifth air channel is shaped and sized based on the shape of the first electronic box; however, it will be appreciated that the shape of the fifth air channel may be varied via addition of spacer elements along the fifth air channel, or on account of different shapes of the first electronic box.

[0030] Throughout the present disclosure, the term "third ambient airflow" refers to a flow of the third ambient air from the external atmosphere of the digital signage into the sixth air channel inside the digital signage. Throughout the present disclosure, the term "sixth air channel" refers to a space (or region) above the second electronic box for enabling the third ambient airflow above the second electronic box for cooling the second electronic box by absorbing heat from the second electronic box. The sixth air channel is shaped and sized based on the shape of the second electronic box; however, it will be appreciated that the shape of the sixth air channel may be varied via addition of spacer elements along the sixth air channel, or on account of different shapes of the second electronic box.

[0031] Throughout the present disclosure, the term "second fan array" refers to one or more set of fans moving air in a preferred direction to extract the second ambient air and the third ambient air from the surroundings. The second fan array is configured to extract the second ambient air (or atmospheric air) and the third ambient air from the surrounding environment to circulate the second ambient airflow and the third ambient airflow through the second air channel and through the third air channel, respectively, to pass through the sixth air channel and subsequently, flow out of the digital signage. Herein, the fans in the second fan array may be of similar sizes, or of different sizes, based on requirement and the size selection may be done to improve the cooling efficiency of the digital signage. Typically, different sizes of fans of the second fan array offer different fan speeds and thus, enabling generation of different air flow rate for each type of air flow in order to ensure proper circulation throughout the display portion. The second fan array comprises fans having a size (or diameter) in the range of 60 millimetres (mm) to 150mm. In an embodiment, the second fan array comprises fans having a size of 92mm. In another embodiment, the second fan array comprises fans having a size of 60mm. The second fan array may have a dedicated power source that may or may not be the same as that of the first electronic box and the second electronic box. Beneficially, a greater heat exchanger efficiency can be achieved by adjusting the air flow(s) through the air channel(s) within the housing by adjusting the individual fan speeds of each fan of the fan array.

[0032] The differential fan speeds (and associated volume of the air flow(s)) are adjusted relative to each other to maximize the temperature differential within the digital signage as a whole. Further, with an increase in the fan speed of second fan array, the velocity of air flow is increased and as a result, the cooling efficiency of the digital signage is increased. Notably, the fan speed of the second fan array is to be increased only to a predefined limit, such that the higher friction generated on account of the increase in fan speed does not impede the cooling efficiency of the digital signage. Moreover, variation in fan speeds may be based on ambient temperatures i.e., when the ambient temperature is low, the fan speeds of second fan array is lowered in order to preserve power and improve the efficiency of the digital signage and similarly, when the ambient temperature is high, the fan speeds of the first fan array is raised in order to increase the cooling efficiency of the digital signage. Additionally, optionally, via adjustment of the air flow(s) across all available air flow channels (i.e., by adjusting individual fan speeds), the efficiency of the heat exchanger increases and thereby allows a greater amount of heat to be extracted from the first ambient airflow for a given size heat exchanger. Moreover, optionally, as an alternative to varying fan speeds, fans may be operated at a fixed or predetermined speed and switched alternately on and off (e.g., via a variable duty cycle) to control the flow rate of the first ambient airflow through the heat exchanger.

[0033] Throughout the present disclosure, the term "airflow spoiler" refers to an aerodynamic device that is used to manipulate and change an existing direction of any airflow into desired one or more directions. Notably, arranging the airflow spoiler between the display portion and the base portion enables to prevent the first ambient airflow in the display portion from mixing with the second ambient airflow and the third ambient airflow in the base portion. Optionally, the airflow spoiler is fabricated from a fabrication material selected from at least one of: galvanized steel, ungalvanized steel, stainless steel, aluminium, titanium, mass loaded vinyl (MLV), acrylonitrile butadiene styrene (ABS), carbon or glass fiber composite, or a composite thereof. The aforementioned materials may be used either separately or in conjunction with each other to form a composite in order to improve the robustness of the airflow spoiler. The material of the airflow spoiler is chosen based on the specific application requirements to provide robustness and structural integrity to the airflow spoiler. A technical effect is that the airflow spoiler is made from one or more well-known materials which enhances robustness and reliability of the airflow spoiler.

[0034] Optionally, the airflow spoiler is covered at least partially with a noise reducing material. In this regard, the term "noise reducing material" refers to a soundproofing material employed to absorb, reflect, or diffuse sound waves created on account of any ambient airflow through the airflow spoiler. The noise reducing material is designed to reduce the noise levels associated with any ambient airflow by conversion into different energy forms. Additionally, the noise reducing material improves the life of the digital signage and the airflow spoiler by minimizing wear and tear caused due to the noise induced vibrations. The material or type of the noise reducing material is selected based on the specific implementation, cost constraints, required level of noise reduction, environmental and aesthetic considerations. A technical effect of the airflow spoiler being covered at least partially with the noise reducing material enables to effectively elongate the life of the airflow spoiler.

[0035] Optionally, the noise reducing material is selected from at least one of: mass loaded vinyl (MLV), acoustic foam panels, acoustic fiberglass panels, barrier composites. In this regard, use of the aforementioned materials in the noise reducing material is well-known in the art. A technical effect is that the noise reducing material is made from well- known reliable materials to improve the effectiveness of the noise reducing material.

[0036] Optionally, the airflow spoiler is of a Bi-metal material. In this regard, the term "bi-metal material" refers to a material that consists of two different metals that are bonded together. Notably, the bi-metal material bends with change in temperature, which increases the curves in the airflow spoiler. A technical effect of the airflow spoiler being of the Bi-metal material is that the airflow spoiler has adaptive curve adjustment in presence of even minimal temperature changes which enhances the efficacy of the airflow spoiler.

[0037] Notably, the airflow spoiler being configured to direct the first and second amounts of the first ambient airflow from the first air channel to the second air channel and to the third air channel, respectively, enables to prevent the first ambient airflow from entering the fourth air channel and directly escape out of the display signage from the second air channel and the third air channel, respectively. Notably, the airflow spoiler being configured to direct the second ambient airflow from the fifth air channel and the third ambient airflow from the sixth air channel to the fourth air channel enables to cool the base portion using the second ambient air and the third ambient air flowing into the fourth air channel, rather than relying on the first ambient air to cool the base portion that has already absorbed heat from the display portion. It will be appreciated that the first ambient airflow from the first air channel being prevented to mix with the second ambient airflow and the third ambient airflow enables to prevent the heat absorbed by the first ambient airflow from the display portion to enter the base portion by mixing with the second ambient airflow and the third ambient airflow. Subsequently, the second ambient airflow and the third ambient airflow are used to cool the base portion instead. Throughout the present disclosure, the term "laminar flow" refers to smooth parallel flow of air. Notably, each of the first, second and third ambient airflows maintaining the laminar flow while exiting the digital signage implies that the first, second and third ambient airflows flow out of the display signage in a smooth parallel manner without creating any turbulence. It will be appreciated that each of the first, second and third ambient airflows maintaining the laminar flow enables to prevent choking of the first, second and third ambient airflows.

[0038] Optionally, the airflow spoiler comprises: a first wing towards the display portion; a second wing towards the first side; a third wing towards the second side; and a fourth wing towards the base portion, wherein the second wing and the third wing extend to the first side and to the second side, respectively.

[0039] In this regard, the term "first wing" refers to a flat, horizontal part that extends outwards from the airflow spoiler towards the display portion. Notably, the first wing produces a required lift that changes the direction of the first ambient airflow from the first air channel towards the second air channel and the third air channel. Throughout the present disclosure, the term "second wing" refers to a flat, horizontal part that extends outwards from the airflow spoiler towards the first side. Notably, the second wing acts as a partition between the second air channel and the fifth air channel that prevents the first amount of the first ambient airflow from mixing with the second ambient airflow. Throughout the present disclosure, the term "third wing" refers to a flat, horizontal part that extends outwards from the airflow spoiler towards the second side. Notably, the third wing acts as a partition between the third air channel and the sixth air channel that prevents the second amount of the first ambient airflow from mixing with the third ambient airflow. Throughout the present disclosure, the term "fourth wing" refers to a flat, horizontal part that extends outwards from the airflow spoiler towards the base portion. Notably, the fourth wing produces a required lift that changes the direction of the second ambient airflow from the fifth air channel and the third ambient airflow from the sixth air channel towards the fourth air channel. Optionally, the first wing, the second wing, the third wing, and the fourth wing extend outwards from the airflow spoiler at an angle of 90 degrees. A technical effect is that the airflow spoiler is able to effectively prevent the first ambient airflow in the display portion from mixing with the second ambient airflow and the third ambient airflow in the base.

[0040] Optionally, the airflow spoiler further comprises a curved section configured to prevent the first ambient airflow from the first air channel to mix with the second ambient airflow and the third ambient airflow, and each of the first, second and third ambient airflows maintain a laminar flow while exiting the digital signage, the curved section comprising: a first curve between the first wing and the second wing; a second curve between the first wing and the third wing; a third curve between the second wing and the fourth wing; and a fourth curve between the third wing and the fourth wing, wherein, the first and second curves are configured to at least partially direct the first amount and the second amount of the first ambient airflow from the second air channel and the third air channel, respectively, upwards.

[0041] In this regard, the term "curved section" refers to a portion of the airflow spoiler whose sides have a curved shape that allows the first wing, the second wing, the third wing and the fourth wing to extend outwards from the airflow spoiler. Notably, the curved section in the airflow spoiler enables to influence the direction in which any airflow is directed using the airflow spoiler. Throughout the present disclosure, the term "first curve" refers to a curve-shaped side between the first wing and the second wing. The first curve enables to influence the direction in which the first amount of the first ambient airflow is directed by the airflow spoiler, such that the first amount of the first ambient airflow is directed upwards. Throughout the present disclosure, the term "second curve" refers to a curve-shaped side between the first wing and the third wing. The second curve enables to influence the direction in which the second amount of the first ambient airflow is directed by the airflow spoiler, such that the second amount of the first ambient airflow is directed upwards. Throughout the present disclosure, the term "third curve" refers to a curve-shaped side between the second wing and the fourth wing. The third curve enables to influence the direction in which the second ambient airflow from the fifth air channel to the fourth air channel is directed by the airflow spoiler. Throughout the present disclosure, the term "fourth curve" refers to a curve-shaped side between the third wing and the fourth wing. The fourth curve enables to influence the direction in which the third ambient airflow from the sixth air channel to the fourth air channel is directed by the airflow spoiler. A technical effect is that the curves enable the hot first and the second amounts of the first ambient airflow are to stay separate i.e. not mixed with the second and the third ambient airflow which are cooling the first electronics box and the second electronics box in the base portion, thus the cooling effect is much more efficient in the base portion, also energy efficient as the fans can be used in lower speed or shorter time saving energy. In addition, the airflows stay laminar and keep higher velocity i.e. better cooling and are less noisy.

[0042] Optionally, each of the first curve, the second curve, the third curve and the fourth curve have a radius (R) in a range of 5-60 cm. Optionally, the first curve, the second curve, the third curve and the fourth curve have the radius (R) in the range of 5, 10, 20, 30, 40, 50 up to 10, 20, 30, 40, 50, 60 cm. In this regard, the first curve, the second curve, the third curve and the fourth curve having the radius (R.) in the range of 5-60 enables the airflow spoiler to be small enough to be placed therein. A technical effect is that the ideal shape and size of the curved section is used in airflow spoiler.

[0043] Optionally, the first curve is concave and the second curve is concave and that the first curve and the second curve are configured to at least partially direct the first amount and the second amount of the first ambient airflow, respectively, in an angle (a, 0) upwards. In this regard, the first curve being concave implies that the curved side of the first curve is bent inwards between the first wing and the second wing. Notably, the first curve is shaped as such that a tip of the second wing is inclined at the angle a upwards from a horizontal axis. Subsequently, the first amount of the first ambient airflow that passes over the second wing is directed at least partially in the angle a upwards from the horizontal axis. Similarly, the second curve being concave implies that the curved side of the second curve is bent inwards between the first wing and the third wing. Notably, the second curve is shaped as such that a tip of the third wing is inclined at the angle 0 upwards from the horizontal axis. Subsequently, the second amount of the first ambient airflow that passes over the third wing is directed at least partially in the angle 0 upwards from the horizontal axis. A technical effect is that the upwards directed the second and the third wings directs the hot first and the second amounts of the first ambient airflow towards the display portion and not mixing, in fact not heating the second and the third ambient airflow which are cooling the electronics box in the base portion, thus the cooling effect is much more efficient in the base portion, also energy efficient as the fans can be used in lower speed or shorter time saving energy. In addition, the airflows stay laminar and keep higher velocity i.e. better cooling and are less noisy. Optionally, the angle is between 1 - 80 degrees. Optionally, the angle is between 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,

[0044] 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54,

[0045] 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76 up to 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36,

[0046] 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72,

[0047] 74, 76, 78, 89 degrees. A technical effect is that the upwards direction angle can be selected based on environmental temperature: bigger angle (more upwards) in hotter temperature. In addition the directed the second and the third wings directs the hot first and the second amounts of the first ambient airflow towards the display portion and not mixing, in fact not heating the second and the third ambient airflow which are cooling the electronics box in the base portion, thus the cooling effect is much more efficient in the base portion, also energy efficient as the fans can be used in lower speed or shorter time saving energy. In addition, the airflows stay laminar and keep higher velocity i.e. better cooling and are less noisy.

[0048] Optionally, the angle a can be different than angle 0 e.g. in environmental conditions when the first side is towards sun and getting hotter than the second side that is not under direct sun light and is thus cooler. In that case the angle a can be e.g. 6 degrees on the first side towards sun and the angle 0 on the second side can e.g. 2 degrees.

[0049] Optionally, the airflow spoiler has at least one fin. In this regard, the term "fin" refers to a thin, extended surface of the airflow spoiler operable to increase the disruption of any airflow by the airflow spoiler. It will be appreciated that the "at least one fin" refers to "a single fin" in some implementations, and "a plurality of fins" in other implementations. The at least one fin of the airflow spoiler can be oriented vertically, horizontally, or diagonally, depending on the specific design requirements. Specifically, vertical fins of the airflow spoiler are used when space is limited, horizontal fins are suitable for situations where airflow is restricted, and diagonally oriented fins can offer a balance between restricted airflow and space utilization. In some cases, a combination of fin orientations may be employed to achieve the desired performance for the airflow spoiler. A technical effect is that an efficiency of the airflow spoiler is significantly enhanced by the presence of the at least one fin in the airflow spoiler.

[0050] Optionally, the first curve, the second curve, the third curve and the fourth curve has a shape selected from: circular, elliptical, oval, parabolic. In this regard, the aforementioned shapes are suitable to be selected as the first curve, the second curve, the third curve and the fourth curve due to the effectiveness of the aforementioned shapes in directing the first amount and the second amount of the first ambient airflow from the second air channel and the third air channel, respectively, upwards. A technical effect is that only those shapes that are well-known and effective are selected as the first curve, the second curve, the third curve and the fourth curve.

[0051] Optionally, the at least one fin is arranged at least partially along the first curve, the second curve, the third curve and the fourth curve. In this regard, the at least one fin being arranged at least partially along the first curve, the second curve, the third curve and the fourth curve implies that the at least one fin is arranged at least partially on each surface of the airflow spoiler. Notably, the at least one fin is identical in shape to the first curve, the second curve, the third curve and the fourth curve. In other words, a curvature of the at least one fin is identical to the first curve, the second curve, the third curve and the fourth curve. A technical effect is that an effectiveness of arranging the at least one fin is significantly increased by arranging the at least one fin at least partially along the first curve, the second curve, the third curve and the fourth curve. Optionally, a length (LI) of each of the at least one fin is half of a length (L2) of the first curve, the second curve, the third curve and the fourth curve. In this regard, the length of each of the at least one fin defines how elongate is the at least one fin is between two opposite ends of the at least one fin.

[0052] DETAILED DESCRIPTION OF THE DRAWINGS

[0053] Referring to FIG. 1, illustrated is a schematic illustration of a digital signage 100, in accordance with an embodiment of the present disclosure. As shown, the digital signage 100 comprises a housing 102, having a first side 102A and a second side 102B, comprising a display portion 104, a base portion 106 and an airflow spoiler 108. The display portion 104 comprises a first display arrangement 110. Moreover, the display portion 104 comprises a second display arrangement 112. Furthermore, the display portion 104 comprises a heat exchanger 114 arranged between the first display arrangement 110 and the second display arrangement 112. Furthermore, the display portion 104 comprises a first air channel 116, located centrally along the heat exchanger 114, for enabling a first ambient airflow 118 therein. Furthermore, the display portion 104 comprises a second air channel 120, for enabling a first amount 122 of the first ambient airflow 118 therein. Furthermore, the display portion 104 comprises a third air channel 124, for enabling a second amount 126 of the first ambient airflow 118 therein. Furthermore, the display portion 104 comprises a first fan array 128 configured for extracting first ambient air to enable the first 122 and second 126 amounts of the first ambient airflow 118 from the first air channel 116 to pass through the second air channel 120 and through the third air channel 124, respectively. Moreover, the base portion 106 comprises a first electronic box 130 and a second electronic box 132, occupying a part of the base portion such that a fourth air channel 134 is formed between the first electronic box 130 and the second electronic box 132. Furthermore, the base portion 106 comprises a fifth air channel 136, for enabling a second ambient airflow 138 therein. Furthermore, the base portion 106 comprises a sixth air channel 140, for enabling a third ambient 142 airflow therein. Furthermore, the base portion 106 comprises a second fan array 144 configured for extracting the second ambient air and the third ambient air to enable the second ambient airflow 138 from the fifth air channel 136 and the third ambient airflow 142 from the sixth air channel 140 to pass through the fourth air channel 134 to enable the second ambient airflow 138 and the third ambient airflow 142 to flow out of the digital signage 100. Furthermore, the airflow spoiler 108, arranged between the display portion 104 and the base portion 106, configured to direct the first 122 and second 126 amounts of the first ambient airflow 118 from the first air channel 116 to the second air channel 120 and to the third air channel 124, respectively. Moreover, the airflow spoiler 108 is configured to direct the second ambient airflow 138 from the fifth air channel 136 and the third ambient airflow 142 from the sixth air channel to the fourth air channel 140, wherein the airflow spoiler 108 is configured to prevent the first ambient airflow 118 from the first air channel 116 to mix with the second ambient airflow 138 and the third ambient airflow 142, and each of the first 118, second 138 and third ambient 142 airflows maintain a laminar flow while exiting the digital signage 100.

[0054] Referring to FIG. 2, illustrated is a schematic illustration of an airflow spoiler 200, in accordance with an embodiment of the present disclosure. As shown, the airflow spoiler 200 comprises a first wing 202A towards a display portion. Moreover, the airflow spoiler 200 comprises a second wing 202B towards a first side. Furthermore, the airflow spoiler 200 comprises a third wing 202C towards a second side. Furthermore, the airflow spoiler 200 comprises a fourth wing 202D towards the base portion, wherein the second wing 202B and the third wing 202C extend to the first side and to the second side, respectively. The airflow spoiler 200 further comprises a curved section 204 configured to prevent a first ambient airflow from a first air channel to mix with a second ambient airflow and a third ambient airflow, and each of the first, second and third ambient airflows maintain a laminar flow while exiting a digital signage. The curved section comprising a first curve 204A between the first wing 202A and the second wing 202B; a second curve 204B between the first wing 202A and the third wing 202C; a third curve 204C between the second wing 202B and the fourth wing 202D; and a fourth curve 204D between the third wing 202C and the fourth wing 202D, wherein, the first 204A and second curves 204B are configured to at least partially direct a first amount and a second amount of the first ambient airflow from a second air channel and a third air channel, respectively, upwards. Moreover, the airflow spoiler 200 has at least one fin (depicted as a first fin 206A and a second fin 206B).

[0055] Referring to FIG. 3, illustrated is a schematic illustration of an implementation of a display signage 300. As shown, a first curve 302 is configured to at least partially direct a first amount of a first ambient airflow, in an angle a. Moreover, a second curve 304 is configured to at least partially direct a second amount of the first ambient airflow, in an angle .

Claims

CLAIMS1. A digital signage (100, 300) comprising: a housing (102), having a first side (102A) and a second side (102B), comprising a display portion (104), a base portion (106) and an airflow spoiler (108, 200), wherein: the display portion comprises: a first display arrangement (110), a second display arrangement (112), a heat exchanger (114) arranged between the first display arrangement and the second display arrangement, a first air channel (116), located centrally along the heat exchanger, for enabling a first ambient airflow (118) therein, a second air channel (120), for enabling a first amount (122) of the first ambient airflow therein, a third air channel (124), for enabling a second amount (126) of the first ambient airflow therein, a first fan array (128) configured for extracting first ambient air to enable the first and second amounts of the first ambient airflow from the first air channel to pass through the second air channel and through the third air channel, respectively; the base portion comprises: a first electronic box (130) and a second electronic box (132), occupying a part of the base portion such that a fourth air channel (134) is formed between the first electronic box and the second electronic box, a fifth air channel (136), for enabling a second ambient airflow (138) therein, a sixth air channel (140), for enabling a third ambient airflow (142) therein,a second fan array (144) configured for extracting the second ambient air and the third ambient air to enable the second ambient airflow from the fifth air channel and the third ambient airflow from the sixth air channel to pass through the fourth air channel to enable the second ambient airflow and the third ambient airflow to flow out of the digital signage; and the airflow spoiler arranged between the display portion and the base portion, configured to direct: the first and second amounts of the first ambient airflow from the first air channel to the second air channel and to the third air channel, respectively, the second ambient airflow from the fifth air channel and the third ambient airflow from the sixth air channel to the fourth air channel, wherein the airflow spoiler is configured to prevent the first ambient airflow from the first air channel to mix with the second ambient airflow and the third ambient airflow, and each of the first, second and third ambient airflows maintain a laminar flow while exiting the digital signage.

2. A digital signage (100, 300) according to claim 1, wherein the airflow spoiler comprises: a first wing (202A) towards the display portion (104); a second wing (202B) towards the first side (102A); a third wing (202C) towards the second side (102B); and a fourth wing (202D) towards the base portion, wherein the second wing and the third wing extend to the first side and to the second side, respectively.

3. A digital signage (100, 300) according to claim 2, wherein the airflow spoiler further comprises a curved section (204) configured toprevent the first ambient airflow (118) from the first air channel (116) to mix with the second ambient airflow (138) and the third ambient airflow (142), and each of the first, second and third ambient airflows maintain a laminar flow while exiting the digital signage, the curved section comprising: a first curve (204A, 302) between the first wing and the second wing; a second curve (204B, 304) between the first wing and the third wing; a third curve (204C) between the second wing and the fourth wing; and a fourth curve (204D) between the third wing and the fourth wing, wherein, the first and second curves are configured to at least partially direct the first amount (122) and the second amount (126) of the first ambient airflow from the second air channel (120) and the third air channel (124), respectively, upwards.

4. A digital signage (100, 300) according to claim 3, wherein each of the first curve, the second curve, the third curve and the fourth curve have a radius in a range of 5-60 cm.

5. A digital signage (100, 300) according to claims 3-4, wherein the first curve is concave and the second curve is concave and that the first curve and the second curve are configured to at least partially direct the first amount (122) and the second amount (126) of the first ambient airflow (118), respectively, in an angle (a, 0) upwards.

6. A digital signage (100, 300) according to claim 5, wherein the angle (a, P) is between 1 - 80 degrees.

7. A digital signage (100, 300) according to any of the preceding claims, wherein the airflow spoiler has at least one fin (206A-B).

8. A digital signage (100, 300) according to claim 7, wherein the at least one fin is arranged at least partially along the first curve, the second curve, the third curve and the fourth curve.

9. A digital signage (100, 300) according to claim 8, wherein a length (LI) of each of the at least one fin is half of a length (L2) of the first curve, the second curve, the third curve and the fourth curve.

10. A digital signage (100, 300) according to any of the claims 3-9, wherein the first curve, the second curve, the third curve and the fourth curve has a shape selected from: circular, elliptical, oval, parabolic.

11. A digital signage (100, 300) according to any of the preceding claims, wherein the airflow spoiler is fabricated from a fabrication material selected from at least one of: galvanized steel, ungalvanized steel, stainless steel, aluminium, titanium, mass loaded vinyl (MLV), acrylonitrile butadiene styrene (ABS), carbon or glass fiber composite, or a composite thereof.

12. A digital signage (100, 300) according to any of the preceding claims, wherein the airflow spoiler is covered at least partially with a noise reducing material.

13. A digital signage (100, 300) according to any of the preceding claims, wherein the noise reducing material is selected from at least one of: mass loaded vinyl (MLV), acoustic foam panels, acoustic fiberglass panels, barrier composites.

14. A digital signage (100, 300) according to any of the preceding claims, wherein the airflow spoiler is of a Bi-metal material.

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