Dual-display apparatus

Abstract

Disclosed is a dual display apparatus (100), comprising a frame (101) for housing a first display arrangement (102), a second display arrangement (112), arranged at a distance (w) from the first display arrangement, such that an air channel (122) with a width (w) is formed therebetween, a first array of fans (108) for circulating an ambient air flow (120), a second array of fans (118) for circulating an internal air flow (130); and characterized in that, an electronic box (110), arranged in the air channel between the first display arrangement and the second display arrangement, comprising a first side (110A) and a second side (HOB), such that an available width of the air channel (122) is reduced for increasing pressure within the air channel to increase air flow rate for cooling the dual display apparatus.

Description

[0001] DUAL-DISPLAY APPARATUS

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to heat transfer systems and more specifically to a dual-display apparatus.

[0004] BACKGROUND

[0005] Electronic advertising displays are being used increasingly. They are used in outdoor as well as indoor venues; in locations such as traditional roadside and city centre billboard locations, travel environments (e.g., rail platforms, airports, bus stops, trams, underground rail), retail environments (e.g., shopping malls, supermarkets, petrol stations), entertainment venues (e.g., stadiums, arenas, cinemas, restaurants, bars) and typically any location where advertisers can reach large audiences as they go about their day-to-day business.

[0006] Such displays typically use LCD or LED technology and are designed to cater for outdoor environmental conditions such as weather, temperature, water, wind loading, etc and are designed to withstand robust environments e.g., vandalism and accidental impacts e.g., from vehicles, shopping trolleys, people, etc. Such displays are typically large e.g., 55 inches (139 cm) or higher, high brightness visible screens that can be viewed by a mass audience from a distance and require varied fixing mechanisms to suit the varied application needs e.g., ground fixed (with suitable foundations), wall mounted, integrated with structures e.g., bus-stops— and often with some creative or branded design to suit the marketing needs of brand, retailer or display owner.

[0007] Conventionally, double-sided displays have an air flow channel for cooling purposes in the middle of the two displays, wherein cool air travels from the top of such double-sided displays and hot air is rejected from the bottom thereof. However, when a constant air pressure is experienced across the whole height of such displays, the cool air gets warmer due to improper rejection of the hot air from the bottom and thus, cooling is not effective anymore on the lower part of such double-sided displays and may potentially result in malfunction or errors during operation. Although such displays often incorporate a heat-exchanger as part of a cooling system, to prevent the display from overheating in warm or sunny conditions, the heat-exchanger may contribute to condensation problems upon start-up of the display, or due to unfavourable ambient conditions during operation.

[0008] Furthermore, outdoor electronic displays are built from sensitive electronic components that may be subject to cold temperatures, wherein condensation can occur on surfaces (e.g., framework, metallic portion, and sensitive electronics) whose temperatures reach the prevailing dew point. Thus, the water content in warmer air is converted into water droplets on cooler surfaces at and below the dew point. Correspondingly, any water formation on the sensitive electronics, as a result of direct condensation or indirect condensation, (for example, by dripping a cold metallic surface), can cause short circuits, corrosion, and build-up of mould or residue on electrical contacts and wiring that damages and prevents normal operation of the electronics.

[0009] Therefore, in light of the foregoing discussion, there exists a need to overcome the aforementioned drawbacks associated with existing display arrangements and provide an improved dual-display apparatus.

[0010] SUMMARY

[0011] The present disclosure seeks to provide a dual-display apparatus. An aim of the present disclosure is to provide a solution that overcomes at least partially the problems encountered in prior art. In one aspect, an embodiment of the present disclosure provides a dual display-apparatus, comprising:

[0012] - a frame configured for housing:

[0013] - a first display arrangement, comprising:

[0014] - a first display having a first display side and a first back side; and

[0015] - a first heat exchanger, operatively coupled to the first display, configured for dispersing heat therefrom;

[0016] - a second display arrangement, arranged at a distance from the first display arrangement, such that an air channel with a width is formed therebetween, wherein the second display arrangement comprises:

[0017] - a second display having a second display side and a second back side, opposite to the second display side; and

[0018] - a second heat exchanger, operatively coupled to the second display for dispersing heat therefrom;

[0019] - a first array of fans for circulating an ambient air flow;

[0020] - a second array of fans for circulating an internal air flow; and characterized in that:

[0021] - an electronic box, arranged in the air channel between the first display arrangement and the second display arrangement, comprising a first side and a second side, such that an available width of the air channel is reduced for increasing pressure within the air channel to increase air flow rate, wherein:

[0022] - the first side of the electronic box is facing the first heat exchanger; and

[0023] - the second side of the electronic box is facing the second heat exchanger, to extract heat from the electronic box, for cooling the dual display apparatus. Embodiments of the present disclosure substantially eliminate or at least partially address the aforementioned problems in the prior art and provide an improved a method of heating a surface of a semiconductor structure ought to be processed.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:

[0026] FIG. 1 is an illustration of an exploded perspective view of a dual-display apparatus;

[0027] FIG. 2 is an exemplary depiction of air flow(s) within the dual-display apparatus of FIG. 1;

[0028] FIG. 3 is a perspective view of the frame 101 of the dual-display apparatus 100 of FIG.l;

[0029] FIGs. 4A and 4B are side cross-sectional views of the dual-display apparatus of FIG. 1;

[0030] FIG. 4C is a velocity profile depicting velocity speeds of the ambient air flow;

[0031] FIG. 5 is a cross-section view of a top side of the dual-display apparatus of FIG. 1;

[0032] FIG. 6A (Prior Art) is a cross-section view of a dual side display;

[0033] FIG. 6B, illustrated is a side cross-sectional view of the dual display apparatus of FIG. 1;

[0034] FIG. 7 is a side cross-sectional view of the dual display apparatus of FIG. 1; and

[0035] FIG. 8 is a front view of an exemplary electronic box, in accordance with one or more embodiments of the present disclosure. DETAILED DESCRIPTION OF EMBODIMENTS

[0036] The present disclosure provides a dual display-apparatus. The dualdisplay apparatus (or simply referred to as, apparatus) 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 dual-display apparatus 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 dual-display apparatus 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.

[0037] Conventionally, double-sided displays have an air flow channel for cooling purposes in the middle of the two displays, wherein cool air travels from the top of such double-sided displays and hot air is rejected from the bottom thereof. However, when a constant air pressure is experienced across the whole height of such displays, the cool air gets warmer due to improper rejection of the hot air from the bottom and thus, cooling is not effective anymore on the lower part of such double-sided displays and may potentially result in malfunction or errors during operation. Moreover, such displays are typically heavy, incorporating a substantial chassis with high thermal mass. Furthermore, changes in ambient conditions, such as temperature and humidity, can lead to unwanted condensation that can be a danger to electronics within such displays. Although such displays often incorporate a heat-exchanger as part of a cooling system, to prevent the display from overheating in warm or sunny conditions, the heat-exchanger may contribute to condensation problems upon start-up of the display, or due to unfavourable ambient conditions during operation.

[0038] Furthermore, outdoor electronic displays are built from sensitive electronic components that may be subject to cold temperatures, wherein condensation can occur on surfaces (e.g., framework, metallic portion, and sensitive electronics) whose temperatures reach the prevailing dew point. Thus, the water content in warmer air is converted into water droplets on cooler surfaces at and below the dew point. Correspondingly, any water formation on the sensitive electronics, as a result of direct condensation or indirect condensation, (for example, by dripping a cold metallic surface), can cause short circuits, corrosion, and build-up of mould or residue on electrical contacts and wiring that damages and prevents normal operation of the electronics.

[0039] Thus, in order to overcome the aforementioned drawbacks, the present disclosure provides a novel dual-display apparatus comprising modified air channels and cooling means operable to increase in the internal pressure of the dual-display apparatus for accelerating air flow therein and thereby, cooling the dual apparatus in an effective and efficient manner. Moreover, the dual-display apparatus of the present disclosure includes electronics components within the air channel to further increase the air flow rate and allow heat from the electronic components to be extracted efficiently in order to provide a highly efficient self-cooling dualdisplay apparatus.

[0040] The dual-display apparatus of the present disclosure comprises a frame. The "frame" refers to a rigid structure (or casing) configured for housing and protecting various elements of the dual-display apparatus. The frame may be divided internally into various regions for housing different sets of components (or elements) of the dual-display apparatus separately, or may comprise a singular region for housing all the elements of the dualdisplay apparatus together. The frame may be mechanically coupled, or detachably coupled, with a ground surface, or any other external surface, for firmly holding the various elements of the dual-display apparatus. For example, the frame may be mechanically coupled via bolts, rivets, or fasteners. The frame is shaped and sized to accommodate various elements of the dual-display apparatus and may be varied based on the implementational requirements of the present disclosure. In one embodiment, the frame has a cuboidal shape with a length (I), breadth (b) and a height (h), wherein the exact shape and dimensions of the frame are dependent upon the shape and a size of elements being employed in the dual-display apparatus. In an example, the height (h) of the frame may be twice the height of a display being used in the dualdisplay apparatus. In another example, the breadth (b) of the frame may be thrice the breadth of a display being employed in the dual-display apparatus. The material used for the construction of the frame 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, iron, aluminium, steel, silicon, etc. Typically, the frame consists of at least two sides (or regions) i.e., a first side and a second side (opposite to the first side), wherein each side of the frame consists of separate display arrangements that constitute part of the dual-display apparatus. It will be appreciated by a person skilled in the art that the frame may comprise multiple recesses (or slots), doors, panels, sub-frames, plates, fasteners, gears, hinges, etc., for enabling operation of the dual-display apparatus and are not explained herein since being well known in the art and for brevity of the disclosure.

[0041] The frame of the dual-display apparatus is configured for housing a first display arrangement. The term "display arrangement" as used herein refers to a part of the dual-display apparatus formed via the combination of display(s) and associated electronic and mechanical components required for operation. Herein, the first display arrangement comprises a first display having a first display side and a first back side. The first display side being opposite to the first back side. The first display also has edges separating the first display side and the first back side and not explained herein for brevity of the disclosure. The first display arrangement further comprises a first heat exchanger, operatively coupled to the first display, configured for dispersing heat therefrom. The frame of the dual-display apparatus is further configured for housing a second display arrangement. The second display arrangement is arranged at a distance 'w' from the first display arrangement, such that an air channel with a width (w) is formed therebetween. Herein, the second display arrangement comprises a second display having a second display side and a second back side, opposite to the second display side and a second heat exchanger, operatively coupled to the second display for dispersing heat therefrom. The second display arrangement is identical to the first display arrangement in respect to the shape, size, and inherent elements. Optionally, the second display arrangement is distinct from the first display arrangement in respect to the shape, size and inherent elements. 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", and the like. In one or more embodiments, the first display or the second display comprises 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.

[0042] The term "air channel" as used herein refers to a space (or region) between the two display arrangements configured for allowing ambient (or external) air flow within the frame in order to cool the dual-display apparatus. The 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 air channel may be varied via addition of spacer elements along the air channel, or on account of different shapes of the corresponding display(s) used in the dual-display apparatus. The air channel is formed between the first back side of the first display and the second back side of the second display and thus, varying the shape of the first back side, or the second back side, or both, results in a change of shape of the air channel. Conventionally, double-sided displays have an air flow channel for cooling purposes in the middle of the two displays, wherein cool air travels from the top of such double-sided displays and hot air is rejected from the bottom thereof. However, when a constant air pressure is experienced across the whole height of such displays, the cool air gets warmer due to improper rejection of the hot air from the bottom and thus, cooling is not effective anymore on the lower part of such double-sided displays and may potentially result in malfunction or errors during operation. The dual-display apparatus of the present disclosure is configured to overcome the aforementioned drawbacks by modifying the shape of the air channel along with the type of air flow and rate thereof by inclusion of arrays of fans to increase the pressure within the air channel to develop a pressure gradient therein in order to overcome the constant air pressure problem faced by conventional solutions as explained later on in the present disclosure.

[0043] The term "heat-exchanger" as used herein refers to a device or an arrangement of components operable for exchanging heat between two mediums, whilst preventing direct contact therebetween. For example, the heat exchanger is configured to transfer heat from a source (such as, the first display) 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 apparatus or frame, for example, the first display. Herein, with respect to the displays being used via the dual-display apparatus, the heatexchange function may be provided in different areas of the frame, for example, adjacent to a display side or a back side of a display panel, 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 frame. The size and shape of the heat exchanger corresponds to the size and shape of the first display or the second display. For example, the first display having a 75" display size has a first heat exchanger having a size of 75".

[0044] In one or more embodiments, the first heat exchanger, or the second 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 first heat exchanger of the first display arrangement and the second heat exchanger of the second display arrangement is a heat sink i.e., a passive heat exchanger configured to transfer the heat generated from the first display and the second display via the air flow passing through the air channel. 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 first heat exchanger or the second 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 dual-display apparatus comprises operational limits (such as, allowable pressure limits, temperature ranges, etc.) within which the dual-display apparatus 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 dual-display apparatus 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.

[0045] The frame of the dual-display apparatus is further configured for housing a first array of fans (108) for circulating an ambient air flow (120) and a second array of fans (118) for circulating an internal air flow (130). The first array of fans is configured to extract ambient air (or atmospheric air) from the surrounding environment to circulate the ambient air flow within the frame for cooling the dual-display apparatus. The second array of fans is configured to circulate the internal air flow such that internal components of the dual-display apparatus may cooled on account of the internal air flow. It will be appreciated by a person skilled in the art that dedicated inlets or spaces may be left within the frame to allow circulation of the ambient air flow and the internal air flow as will be explained later on in the present disclosure and the number and position of such inlets or spaces may be varied to improve the circulation and air flow rate in order to cool the dual-display apparatus without any limitations to the present disclosure. Herein, different sizes of fans are utilized for each of the first array of fans and second array of fans based on requirement and are selected to improve the cooling efficiency of the dual-display apparatus. Typically, different sizes of the array of fans 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 of the ambient air flow and the internal air flow throughout the dual-display apparatus. In an embodiment, the first array of fans have a size (or diameter) in the range of 60 millimetres (mm) to 150mm. In a preferred embodiment, the first array of fans have a size of 92mm. In another embodiment, the second array of fans have a size in the range of 40mm to 80mm. In a preferred embodiment, the second array of fans have a size of 60mm. The first array of fans and the second array of fans may comprise individual power sources, or comprise a single 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 frame by adjusting the individual fan speeds of each of the first array of fans and the second array of fans. As a result, the internal and ambient air flow is reduced as the temperature differential between them is reduced (i.e., as the efficiency is reduced) such that the internal and ambient air flow spends a longer time in the first or second heat-exchanger to aid the heat exchange operation of the dual-display apparatus and thereby increases the efficiency in the respective areas of the first and second heat-exchanger. The differential fan speeds (and associated volume of the air flow(s)) are adjusted relative to each other to maximise the temperature differential within the heat-exchanger as a whole. Further, with an increase in the fan speed of the first array of fans or the second array of fans, the velocity of air flow is increased and as a result, the cooling efficiency of the dual-display apparatus is increased. Notably, the fan speed of the first array of fans or the second array of fans are 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 dual-display apparatus. Moreover, variation in fan speeds may be based on ambient temperatures i.e., when the ambient temperature is low, the fan speeds of the first array of fans or the second array of fans is lowered in order to preserve power and improve the efficiency of the dual display apparatus and similarly, when the ambient temperature is high, the fan speeds of the first array of fans or the second array of fans is lowered in order to increase the cooling efficiency of the dual-display apparatus. 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 first heat-exchanger and the second heat exchanger (as a whole) increases and thereby allows a greater amount of heat to be extracted from the internal air flow and the ambient air flow for a given size of the first or second 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 air flow rate through the first and second heat-exchanger.

[0046] The frame is further configured for housing an electronic box. The term "electronic box" refers to an integrated electrical circuitry of the dualdisplay apparatus configured for supplying power to each of the elements of the dual-display apparatus. In an example, the electronic box is configured to supply power to the first display and the second display. In another example, the electronic box is configured to supply power to the first array of fans and the second array of fans. The electronic box comprises wiring, switches, breakers, fixtures, fittings, and other electronic items for enabling safe provision of power to the elements of the dual-display apparatus. The elements of the electronic box are not explained herein since well-known in the art and for the sake of brevity of the present disclosure.

[0047] The electronic box of the dual-display apparatus is arranged in the air channel between the first display arrangement and the second display arrangement. The electronic box comprises a first side and a second side, such that an available width of the air channel is reduced for increasing pressure within the air channel to increase the air flow rate. The first side of the electronic box being opposite and parallel to the second side. The electronic box is positioned in a manner such that the air channel is divided into smaller sub-channels along the first side and the second side of the electronic box having considerably lesser width than the air channel, such that a higher pressure is generated around the electronic box causing an increase the speed (or rate) of air flow within the frame. Herein, the first side of the electronic box is facing the first heat exchanger and the second side of the electronic box is facing the second heat exchanger, to extract heat from the electronic box for cooling the dual-display apparatus. Typically, in respect to the first display arrangement, the first heat exchanger is arranged between the first display and the electronic box to extract heat from both the first display and the electronic box. Specifically, the first heat exchanger is arranged between the first back side of the first display and the first side of the electronic box. Further, in respect to the second display arrangement, the second heat exchanger is arranged between the second display and the electronic box to extract heat from both the second display and the electronic box. Specifically, the second heat exchanger is arranged between the second back side of the second display and the second side of the electronic box. Beneficially, heat extraction (or transfer) takes place from each of the two displays (i.e., the first display and the second display) and the electronic box in an effective and efficient manner such that the cooling efficiency of the dual-display apparatus is increased. Moreover, the electronic box has a cuboidal shape owing to the shape of the air channel, however, the shape of the electronic box may be varied without any limitations to the present disclosure. For example, the first side and the second side of the electronic box may be curved, or may comprise recesses along each side, or may have a customized shape in order to provide a desired air flow profile and rate for improving the circulation of air flow and thereby, improving the cooling efficiency of the dual-display apparatus. It will be appreciated from the foregoing that the illustrated examples may afford heat-exchangers that operate more efficiently and reduce the likelihood of excessively hot and cold spots. This in turn may afford more reliable operation of associated components, such as the first display, the second display, the electronic box, the first, second, and third array of fans and thereby improves reliability of the dual-display apparatus that may be achieved directly by more uniform temperature distribution and by reducing the likelihood of condensation within the frame.

[0048] In one or more embodiments, the electronic box has a height (hl) and breadth (bl), and a width (wl). The width (wl) of the electronic box is varied depending upon the requirement of the implementation such that based on a change of width of the electronic box, the air flow rate of the ambient air flow within the air channel may be varied. Specifically, with a reduction in the breadth of the electronic box, the inherent pressure around the electronic box (within the air channel) is reduced and thus, causes a decrease in the air flow rate and similarly, with an increase in the breadth of the electronic box, the inherent pressure around the electronic box is increased and thus, causes an increase in the air flow rate. Notably, the width of the electronic box is kept lower than the width (w) of the air channel such that air flow is not interrupted.

[0049] In one or more embodiments, the electronic box comprises a top end having a width (wl) and a tapered end with a width (w2). Typically, to cause an air flow having a desired air flow rate and profile, the shape of the top end and the tapered end (or bottom end) may be varied as per requirement. Herein, the tapered end begins at a height (hl - h2) i.e., at a height (h2) from the bottom of the electronic box and runs along the remaining height (h2) of the electronic box, such that a higher-pressure gradient is developed within the air channel for increasing the air flow rate. Typically, tapering of the tapered end of the electronic box increase the available width for the ambient air flow within the channel and thus, reduces the pressure in comparison to the top end of the electronic box. Such a reduction in pressure around the tapered end in comparison to the top end of the electronic box result in development of the pressure gradient across the air channel which results in improving the air flow rate and enables proper circulation of the air flow under various environmental conditions. It will be appreciated that a tapered angle of the tapered end may be varied based on the required pressure gradient for providing an improved air flow circulation within the air channel and may be varied interchangeably. In another embodiment, shape of the top end, or the tapered end, of the electronic box is selected from one of: a flat top, a semi-sphere, a cone, an airfoil, or a customized curved shape. Typically, the shape of either end of the electronic box is varied to obtain a desired air flow rate and profile of the circulating air flow i.e., the ambient air flow and the internal air flow. Beneficially, the aforementioned shapes of the tapered end or the top end of the electronic box enables configuration of the air flow rate within the air channel based on the requirement to obtain a desired air circulation within the dualdisplay apparatus.

[0050] In one or more embodiments, the electronic box further comprises a third array of fans for circulating an isolated air flow for the electronic box. Typically, in addition to the ambient air flow and the internal air flow, the dual-display apparatus of the present disclosure also provides the isolated air flow for the electronic box. Herein, the electronic box comprises a dedicated array of fans i.e., the third array of fans for circulating the isolated air flow configured to cool the electronic box during operation. In addition to the first and second heat exchanger, the isolated air flow also enables transfer of heat from the electronic box for cooling thereof. It will be appreciated by a person skilled in that art that the frame and the electronic box may comprise dedicated slots (or spaces) for enabling the isolated air flow in an effective manner and are not explained herein for the sake of brevity of the disclosure.

[0051] In one or more embodiments, the frame further comprises at least two air gaps, arranged above and below the electronic box, for causing a higher air flow rate of the ambient airflow between the first side of the electronics box and the first heat exchanger, and a higher air flow rate of the ambient airflow (120) between the second side of the electronics box and the second heat exchanger (116). Optionally, the frame further comprises at least two spacer elements, arranged above and below the electronic box, each spacer element being separated from the electronic box by the air gap for increasing the air flow rate of the ambient airflow between the first side of the electronics box and the first heat exchanger and increasing the air flow rate of the ambient airflow between the second side of the electronics box and the second heat exchanger. The term "spacer element" as used herein refers to a block (or plate) arranged adjacent to the electronic box along the air channel. The at least two spacer elements are arranged in a manner so as to allow formation of the air gap(s) around the electronic box to enable circulation of the ambient air flow within different sections of the dual-display apparatus and additionally, aid circulation of the isolated air flow around the electronic box for cooling thereof. Typically, each spacer element is arranged on top and bottom of the electronic box i.e., adjacent to the top end and the tapered end (or bottom end), and separated from the electronic box via the air gap. Further, the ambient air flow upon passing the air gap travels along the first display side of the first display and the second display side of the second display in order to extract heat therefrom. Beneficially, in respect to the first display arrangement, a higher air flow rate of the ambient air flow is achieved between the first side of the electronic box and the first heat exchanger to improve the cooling efficiency of the first heat exchanger on account of the increased air flow rate. Similarly, in respect to the second display arrangement, a higher air flow rate of the ambient air flow is achieved between the second side of the electronic box and the second heat exchanger to improve the cooling efficiency of the second heat exchanger. Moreover, the higher air flow rate is also observed along the first display side of the first display and the second display side of the second display, and thus, improving the overall cooling operation of the dual-display apparatus by increasing the air flow rate along each of the first display, the first heat exchanger, the electronic box, the second heat exchanger, and the second display and thus, improving the heat extraction rate (or the cooling rate) of the dualdisplay apparatus.

[0052] In one or more embodiments, the frame further comprises an exhaust arranged on each side of the frame for releasing the ambient airflow therefrom. To enable the cooling operation of the dual-display apparatus, the frame further comprises the exhaust configured to expel or reject the heated ambient air flow (on account of heat transfer from the associated heat exchanger). Typically, the rejection of the heated air flow reduces the inherent temperature of the dual-display apparatus and at the same time, reduces the pressure within the dual-display apparatus, such that ambient air can be extracted again in order to re-initiate the cooling cycle of the dual-display apparatus. Thus, after rejection of the heated air flow, (new) ambient air may be extracted from the surroundings to initiate the succeeding cooling cycle.

[0053] In another embodiment, a height (h2, h3) of the at least two air gaps and the height (hl) of the electronic box with respect to a height (D) of the first display or a height (D) of the second display is in a range of 17% to 30% and 40% to 66%, respectively. Typically, the size or height of the at least two air gaps and the electronic box is dependent upon the size of the first display or the second display being employed via the dual-display apparatus. Further, based on experimental observations, in order to achieve maximum cooling efficiency and air flow rate of the ambient air flow, the height of the at least two air gaps are set in a range of 20% to 30% of the height (or length) of the first display and the second display. Moreover, the height of the electronic box is set in a range of 40% to 60% of the height of the first display and the second display. In a preferred embodiment, the height (h2, h3) of the at least two air gaps are set at 25% of the height (dl) of the first display and the height (d2) of the second display. Moreover, in the preferred embodiment, the height (hl) of the electronic box is set at 50% of the height (D) of the first display or the second display. In an exemplary scenario, wherein the first display and the second display have a size of 75 inches (") and height of about 65 inches (or 1650mm), the height of the electronic box is set at 51% of the height of the first display and the second display, and the height of the at least two air gaps is set at 24.5% of the height of the first display and the second display. The height of the air channel associated with a 75" screen (the height between positions h2 and h3) is 1567mm, of which 51% is the height of the electronics box along with the associated mounting, i.e., about 800mm. In another exemplary scenario, wherein the first display and the second display have a size of 65", the height of the electronic box is set at 62% of the height of the first display and the second display, and the height of the at least two air gaps is set at 19% of the height of the first display and the second display. Notably, with respect to the height (hl) of the electronics box, the overall space acquired thereby is considered, rather than the position of the electronic box. Specifically, larger the space occupied by the electronic box, higher is the amount of air forced to move past quickly, but higher is the friction generated as a result. In the aforementioned first exemplary scenario, wherein the first display or the second display has a 75" display size, the electronic box occupies approximately 51% of the total available space, while in the second exemplary scenario, wherein the first display or the second display has a 65" display size, the electronic box occupies 62% of the available space.

[0054] In one or more embodiments, the frame further comprises a first door, mechanically coupled to the frame, for covering the first display arrangement, a second door, mechanically coupled to the frame, for covering the second display arrangement. Typically, on each side of the dual-display apparatus, the first door and the second door are mechanically coupled to the frame. For example, the first door or the second door may be hinged with the frame, or coupled via a rivet or a fastener.

[0055] In another embodiment, each of the first door and the second door comprises a door frame for holding a display panel. Each of the first door and the second door typically consists of individual door frames configured to hold display panels therein. The display panel may be formed of a transparent material allowing viewing (by a user) of the first display and the second display therethrough. Herein, each door frame is made from one of a metal, a wood, an alloy, or a plastic and each display panel is made from one of a glass, or a plastic composite. For example, the door frame may be made from one of wood, metal, aluminum, porcelain stoneware, natural stone, plastic, or fabric. It will be appreciated by a person skilled in the art that the material used for the formation of the door i.e., the door frame and the display panel, may be varied based on cost constraints, size factor, weight factor, and other implementational requirements, without any limitations to the present disclosure.

[0056] In one or more embodiments, the dual-display apparatus being positioned in an outdoor environment and exposed to solar radiation causing development of a temperature gradient across the breadth (b) of the frame, wherein the frame further comprises a second air channel between each of the first door and the first display, and the second door and the second display, for allowing the internal air flow to form an air curtain within the frame for negating the developed temperature gradient across the breadth (b) of the frame. Typically, in outdoor environments when the dual-display apparatus is exposed to sunlight from one direction, the side of the dual-display apparatus i.e., closer to the exposed sunlight, becomes warmer than the opposite side that experiences only indirect exposure to the solar radiation. As a result, a temperature gradient is developed across the breadth of the frame, which potentially interferes in the circulation of air flow within the dual-display apparatus and thereby affecting the cooling efficiency thereof. The second air channels are provided between each of the first door and the first display, and the second door and the second display to negate the developed temperature gradient via the internal air flow therein. For thermodynamic reasons, the temperature differential as aforementioned may be different at different areas of the dual-display apparatus e.g., top left and bottom right. Further, as a result, the temperature of the internal air flow may not be uniform across all air channels and thereby results in formation of hot and cool spots in the heat-exchanger(s) and due to the solar radiation, temperature differences on the first or second display may also occur. Now, since the air flow temperature is dependent on weather conditions and could for example drop to 0° C., whilst internal hottest temperatures remain high e.g., 60° C due to the solar radiation heating the air flow(s) within the frame, the cooling efficiency may be lowered as a consequence. Thus, in order to negate the developed temperature differential, the frame further comprises the second air channel between each of the first door and the first display, and the second door and the second display, for allowing the internal air flow within the frame for negating the developed temperature gradient across the breadth (b) of the frame. Beneficially, the internal air flow reduces the developed temperature differential by efficient circulation of the internal air flow and thereby improves the cooling efficiency of the dualdisplay apparatus. The term "a / r curtain" as used herein refers to an air barrier formed via the internal air flow in the second air channels i.e., in a region between each of the first display and the first door, and the second display and the second door, in which the internal air flow moves at a given pressure and velocity, so as to prevent unwanted buildup of heat on the first display side or the second display side due to phenomena such as, solar radiation, or the like. Notably, the air curtain exists in a closed air circuit isolated from the ambient air flow, such that it does not become contaminated by large amounts of dust, dirt or moisture, resulting in inhibition of visibility at the first display, or the second display, or cause damage to any sensitive electrical components of the dualdisplay apparatus. The air curtain is arranged along with each of the first door and the second door, and in combination therewith, prevents heat buildup within the dual-display apparatus and prevent any potential detrimental effects.

[0057] In one or more embodiments, the frame further comprises at least two side air channels for allowing a second internal airflow within the frame for negating the developed temperature gradient. Typically, apart from the second air channels, the frame may further comprise side air channels arranged on either side of the frame, for enabling circulation of the second internal air flow along the sides of the frame such that any temperature gradient developed on account of the solar radiation across the breadth of the frame may be beneficially negated on via the second internal air flow through the side air channels.

[0058] In one or more embodiments, the dual-display apparatus further comprises a controller, operatively coupled to the electronic box, configured for controlling at least one of a speed and a direction, of each of the first array of fans, the second array of fans, and the third array of fans, to develop one of a cross-air flow, a parallel air flow, a spiral air flow, or a combination thereof. The controller is configured to control or modify the air flow rate and the type of air flow within the dual-display apparatus by modifying at least one of the speed or the direction of each of the fans in the first array of fans, or the second array of fans, or the third array of fans in order to obtain a desired air flow. As an alternative or addition to varying fan speeds, fans may be operated at a fixed or predetermined speed and switched alternately on and off (e.g., by way of a variable duty cycle) to control the air flow throughout the frame. In an example, the first array of fans may operate at a normal speed to achieve a given flow rate. However, the second array of fans may operate at a slower speed to achieve a higher flow rate. Moreover, optionally, the controller may be configured to vary the fan speeds of individual fans within the first array of fans, or the second array of fans, or the third array of fans, such that any given array of fans may operate at progressively slower (or faster) speeds to achieve progressively lower (or higher) air flow rates. Thus, as the hot internal air travels further down the air channel(s) and is progressively cooled, the ambient air travels at a progressively lower rate and therefore spends longer durations in the corresponding heat-exchanger and thereby, increases the efficiency of the heat-exchanger(s) and consequently, improves the cooling efficiency of the dual-display apparatus.

[0059] The term "controller" as used herein refers to a structure and / or module that includes programmable and / or non-programmable components configured to store, process and / or share information and / or signals for controlling at least one of a speed and a direction, of each of the first array of fans, the second array of fans, and the third array of fans. The controller may be operatively coupled to the electronic box for varying the power supplied to different components of the dual-display apparatus. In the present examples, the controller may include components such as memory, a controller, a network adapter, and the like, to store, process and / or share information with other components, such as a temperature sensor, a remote server unit, a database, etc. Additionally, the apparatus elements may communicate with each other using a communication interface.

[0060] In one or more embodiments, the dual-display apparatus further comprises at least one temperature sensor configured for measuring a current temperature within the frame. The at least one temperature sensor is arranged in different parts of the frame, for example, dedicated temperature sensors for each of the first display arrangement and the second display arrangement, a dedicated temperature sensor for the electronic box, and various temperature sensor arranged along the air channel(s). Beneficially, such an implementation and arrangement of the temperature sensors enable the dual-display apparatus to monitor the current temperature at different regions or sections of the dual-display apparatus and accordingly enabling the controller to modify the speed and direction of the array(s) of fans in order to specifically cool the region (or area) of the frame having a current temperature exceeding an allowable temperature sensor. Moreover, beneficially, such an implementation improves the durability and lifespan of the dual-display apparatus and increases the versatility thereof during operation.

[0061] In one or more embodiments, the dual-display apparatus further comprises an integrated heating unit, arranged along at least one of the first array of fans, the second array of fans, and the third array of fans, for providing heated air flow, wherein the integrated heating unit is activated when a current temperature falls below a predefined temperature threshold. The predefined temperature threshold may be configured based on operational conditions temperature limits, current season or weather associated with the outdoor environments. In an example, the predefined temperature threshold in winters may be in a range of 0 degree Celsius to 20 degrees Celsius. Beneficially, the dualdisplay apparatus can be operated in all weather conditions i.e., as heating dual-display apparatus in winters and as a cooling dual-display apparatus in summers. It will be appreciated that a similar predefined threshold for a maximum allowable temperature (for summers) may be defined, for example, in a range of 40 degrees Celsius to 60 degrees Celsius and an additional integrated cooling unit may also be provided therein for regions experiencing extremely high temperatures, without any limitations to the present disclosure. DETAILED DESCRIPTION OF THE DRAWINGS

[0062] Referring to FIG. 1, illustrated is an exploded perspective view of a dualdisplay apparatus 100, in accordance with one or more embodiments of the present disclosure. As shown, the dual-display apparatus 100 comprises a frame 101 configured for housing a first display arrangement 102. The first display arrangement 102 comprises a first display 104 having a first display side 104A and a first back side 104B (not shown), and a first heat exchanger 106, operatively coupled to the first display 104, configured for dispersing heat therefrom. The frame 101 further comprises a second display arrangement 112, arranged at a distance 'w' from the first display arrangement 102, such that an air channel 122 with a width (w) is formed therebetween. Herein, the second display arrangement 112 comprises a second display 114 having a second display side 114A and a second back side 114B (not shown), opposite to the second display side 114A, and a second heat exchanger 116, operatively coupled to the second display 114 for dispersing heat therefrom. The frame 101 further comprises a first array of fans 108 for circulating an ambient air flow 120 and a second array of fans 118 for circulating an internal air flow 130. Further, characterized in that, the frame 101 further comprise an electronic box 110, arranged in the air channel 122 between the first display arrangement 102 and the second display arrangement 112, comprising a first side 110A and a second side HOB (not shown), such that an available width of the air channel 122 is reduced for increasing pressure within the air channel 122 to increase air flow rate. Herein, the first side 110A of the electronic box 110 is facing the first heat exchanger 106 and the second side HOB of the electronic box 110 is facing the second heat exchanger 116, to extract heat from the electronic box 110, for cooling the dual-display apparatus 100. Optionally, the frame 101 further comprises at least two air gaps 132A, 132B, arranged above and below the electronic box 110, for causing a higher air flow rate of the ambient airflow 120 between the first side 110A of the electronics box 110 and the first heat exchanger 106, and a higher air flow rate of the ambient airflow 120 between the second side HOB of the electronics box 110 and the second heat exchanger 116. The frame further comprises an exhaust 142A, 142B arranged on each side of the frame 101 for releasing the ambient airflow 120 therefrom. Moreover, optionally, the frame 101 further comprises a first door 134 (partly shown), mechanically coupled to the frame 101, for covering the first display arrangement 102 and a second door 136 (partly shown), mechanically coupled to the frame 101, for covering the second display arrangement 112. Further, optionally, each of the first door 134 and the second door 136 comprises a door frame 134A, 136A for holding a display panel 134B, 136B. Further, optionally, wherein the apparatus 100 is positioned in an outdoor environment and exposed to solar radiation causing development of a temperature gradient across the breadth of the frame 101. The frame 101 further comprises a second air channel 138A, 138B between each of the first door 134 and the first display 104, and the second door 136 and the second display 114, for allowing the internal air flow 130 to form an air curtain 148A, 148B within the frame 101 for negating the developed temperature gradient across the breadth of the frame 101. Moreover, the frame 101 further comprises at least two side air channels 146A, 146B for allowing a second internal airflow 140 within the frame 101 for negating the developed temperature gradient.

[0063] Referring to FIG. 2, illustrated is an exemplary depiction of air flow(s) within the dual-display apparatus 100, in accordance with one or more embodiments of the present disclosure. It will be appreciated that FIG. 2 is read in conjunction with FIG. 1. As shown, the internal airflow 130 that is air-tight and separated from the ambient airflow 120. Herein, the ambient airflow 120 is passing through the air gaps 132A, 132B of the frame 101 that are located above and below the electronics box 110. Such an arrangement of the air gaps 132A, 132B above and below the electronic box 110 causes a higher air flow rate of the ambient airflow 120 between the first side 110A of the electronic box 110 and the first heat exchanger 106 and a higher air flow rate of the ambient airflow 120 between the second side HOB of the electronics box 110 and the second heat exchanger 116. Herein, the internal air flow 130 forms an air circuit that splits at the bottom of the frame 101 and thereby pushed from the bottom of first display 104 and the second display 114 back to the top of the frame 101. At the top of first display and the second display, the internal air flow 130 move to the sides of the frame 101, and thereby merged again. Upon merging, since the internal flow 130 on one side (either on the side of the first display 104 or on the side of the second display 114) is low and is hotter than the other due to exposure to sunlight; thus, heat from the hot panel is transferred to the cool panel for sharing the thermal load throughout the dual display apparatus. Beneficially, on account of the higher air flow rate of the ambient air flow 120, the cooling efficiency of the heat exchangers 106, 116 is increased and thereby improves the cooling operation of the dual-display apparatus 100 in order to improve the reliability, versatility and robustness thereof. Further shown, the exhaust 142A, 142B is operable to release (or expel) the heated ambient air flow 120 from the bottom of the frame 101.

[0064] Referring to FIG. 3, illustrated is a perspective view of the frame 101 of the dual-display apparatus 100 of FIG.l, in accordance with one or more embodiments of the present disclosure. Herein, the FIG. 3 illustrates relative heights of the air gaps 132A, 132B and the electronics box 110 in % values with respect to the height DI of the first display 104 or the second display 114. Optionally, a height h2 of the air gap 132A, with respect to a height D of the first display 104 or the second display 106 is in a range of 17% to 30%. Moreover, optionally, a height h3 of the air gap 132B, with respect to a height D of the first display 104 or the second display 106 is in a range of 40% to 66%. Notably, with respect to the height hl of the electronics box 110, the overall space acquired thereby is considered, rather than the position of the electronic box 110. Specifically, larger the space occupied by the electronic box 110, higher is the amount of air forced to move past quickly, but higher is the friction generated as a result. In the aforementioned first exemplary scenario, wherein the first display 104 or the second display 114 has a 75" display size, the electronic box 110 occupies approximately 51% of the total available space, while in the second exemplary scenario, wherein the first display 104 or the second display 114 has a 65" display size, the electronic box 110 occupies 62% of the available space.

[0065] Referring to FIGs. 4A and 4B, collectively, illustrated are side cross- sectional views of the dual-display apparatus of FIG. 1, in accordance with one or more embodiments of the present disclosure. Referring to FIG. 4A, illustrated is a depiction of the ambient air flow 120 within the dual-display apparatus 100 from either side thereof. Referring to FIG. 4A, illustrated are exemplary shapes of a top end 124 and a tapered end 126 of the electronic box 110, in accordance with one or more embodiments of the present disclosure. As shown, the shape of the top end 124, or the tapered end 126, of the electronic box 110 is selected from one of: a flat top, a semi-sphere, a cone, an airfoil, or a customized curved shape. Specifically, as shown, the top end 124 of the electronic box 110 has a semi-spherical (or dome) shape, whereas the tapered end 126 (also, referred to as the bottom end) has an airfoil shape. Beneficially, the depicted shapes of the top end 124 and the tapered end 126 of the electronic box improves the air flow rate by avoiding extra turbulence of the ambient air flow 120 in order to improve the cooling efficiency of the dual-display apparatus 100.

[0066] Referring to FIG. 4C, illustrated is a velocity profile depicting velocity speeds of the ambient air flow 120, in accordance with one or more embodiments of the present disclosure. Herein, regions having different velocity speed are depicted using dotted patterns and the density of the dotted patterns is indicative of the velocity of the ambient air flow 120. Typically, a 5% dotted region is indicative of a velocity of 0 meters per second (m / s) to 2 m / s, a diagonally striped region indicative of a velocity of 2m / s to 4m / s, a horizontally striped region indicative of a velocity of 4m / s to 6m / s, a vertically striped region indicative of a velocity of 6m / s to 8m / s, a 70% dotted region indicative of a velocity of 8m / s to lOm / s, a 90% dotted region indicative of a velocity of lOm / s to 12m / s, as depicted in associated legend As shown, the velocity of the ambient air flow 120 is increased while passing the electronics box 110 and thus, improves the cooling efficiency of the associated heat exchangers 106, 116 and thereby improving the overall cooling operation of the dualdisplay apparatus 100.

[0067] Referring to FIG. 5, illustrated is a cross-section view of a top side of the dual-display apparatus 100, in accordance with an embodiment of the present disclosure. Typically, when the dual-display apparatus 100 is positioned in an outdoor environment and exposed to solar radiation causing development of a temperature gradient across the breadth (b) of the frame 101. As shown, the frame 101 further comprises a second air channel 138A, 138B between each of the first door 134 and the first display 104, and the second door 136 and the second display 114, for allowing the internal air flow 130 within the frame for negating the developed temperature gradient across the breadth (b) of the frame.

[0068] Referring to FIG. 6A, illustrated is a cross-section view of a dual side display. As shown, a constant air pressure is developed in the air channel and a nominal speed of the air flow A is achieved as result and thus, causes various problems as explained earlier in the present disclosure.

[0069] Referring to FIG. 6B, illustrated is a side cross-sectional view of the dual display apparatus 100 of FIG. 1, in accordance with an embodiment of the present disclosure. As shown, a higher air pressure accelerates the ambient air flow 120 on account of the reduction of width of the air channel 122 and as a result, causes cooling of the lower part in an effective and efficient manner. The electronic box 110 also comprises all electronics used to control both display elements 104 and 114 and also causes efficient cooling thereof via the increased air flow rate of the ambient air flow 120.

[0070] Referring to FIG. 7, illustrated is a side cross-sectional view of the dual display apparatus 100 of FIG. 1, in accordance with an embodiment of the present disclosure. As shown, the electronic box 110 having a height hl and breadth bl (not shown), comprises a top end 124 having a width wl; and a tapered end 126 with a width w2, wherein the tapered end 126 begins at a height hl - h2 and runs along the remaining height h2 of the electronic box, such that a higher-pressure gradient is developed within the air channel 122 for increasing the air flow rate of the ambient air flow 120. The tapered end 126 of the electronics box 110 is made narrower. The height h2 is 0-30% of the total height hl. The width w2 is 5-30% narrower than wl. Beneficially, the narrower tapered end (lower part) of the electronics box 110 eliminates air turbulations, keeps velocity of the ambient airflow 120 constant and thereby provides a better cooling effect at the tapered end i.e., lower part of display 104 or 114. As a result, the cooling of the tapered end is more effective and requires less energy in comparison to conventional solutions.

[0071] Referring to FIG. 8, illustrated is a front view of an exemplary electronic box 110, in accordance with an embodiment of the present disclosure. As shown, the electronic box 110 is air tight and comprises an isolated air flow 160 i.e., separate from the ambient air flow 120 and the internal air flows 130, 140. Herein, the isolated air flow 160 is a circular air flow, however, the type of air flow may be varied by providing a dedicated array of fans to be controlled via the controller 150 in order to develop one of a cross-air flow, a parallel air flow, a spiral air flow, a circular air flow, or a combination thereof.

Claims

CLAIMS1. A dual display-apparatus (100), comprising: a frame (101) configured for housing:- a first display arrangement (102), comprising:- a first display (104) having a first display side (104A) and a first back side (104B); and- a first heat exchanger (106), operatively coupled to the first display, configured for dispersing heat therefrom;- a second display arrangement (112), arranged at a distance (w) from the first display arrangement, such that an air channel (122) with a width (w) is formed therebetween, wherein the second display arrangement comprises:- a second display (114) having a second display side (114A) and a second back side (114B), opposite to the second display side (114A); and- a second heat exchanger (116), operatively coupled to the second display for dispersing heat therefrom;- a first array of fans (108) for circulating an ambient air flow (120);- a second array of fans (118) for circulating an internal air flow (130); and characterized in that:- an electronic box (110), arranged in the air channel between the first display arrangement and the second display arrangement, comprising a first side (110A) of the electronic box and a second side (HOB) of the electronic box, such that an available width of the air channel (122) is reduced for increasing pressure within the air channel to increase air flow rate, wherein:- the first side of the electronic box is facing the first heat exchanger (106); and- the second side of the electronic box is facing the second heat exchanger (116), to extract heat from the electronic box, for cooling the dual display apparatus.

2. The apparatus (100) according to claim 1, wherein the electronic box (110) having a height (hl) and breadth (bl), comprises: a top end (124) having a width (wl); and a tapered end (126) with a width (w2), wherein the tapered end begins at a height (hl - h2) and runs along the remaining height (h2) of the electronic box, such that a higher-pressure gradient is developed within the air channel (122) for increasing the air flow rate.

3. The apparatus (100) according to claim 2, wherein shape of the top end (124), or the tapered end (126), of the electronic box (110) is selected from one of: a flat top, a semi-sphere, a cone, an airfoil, or a customized curved shape.

4. The apparatus (100) according to claim 1, wherein the frame (101) further comprises: a first door (134), mechanically coupled to the frame, for covering the first display arrangement (102); and a second door (136), mechanically coupled to the frame, for covering the second display arrangement (112).

5. The apparatus (100) according to claim 4, wherein each of the first door (134) and the second door (136) comprises a door frame (134A, 136A) for holding a door panel (134B, 136B), wherein: each door frame (134A, 136A) is made from one of a metal, a wood, an alloy, or a plastic; and each door panel (134B, 136B) is made from one of a glass, or a plastic composite.

6. The apparatus (100) according to any of the preceding claims, wherein the frame (101) further comprises: at least two air gaps (132A, 132B), arranged above and below the electronic box (110), for causing: a higher air flow rate of the ambient airflow (120) between the first side of the electronics box and the first heat exchanger; and a higher air flow rate of the ambient airflow (120) between the second side of the electronics box and the second heat exchanger (116); and an exhaust (142A, 142B) arranged on each side of the frame (101) for releasing the ambient airflow therefrom.

7. The apparatus (100) of claim 6, wherein a height (h2, h3) of the at least two air gaps (132A, 132B), and the height (hl) of the electronic box (110) with respect to a height (D) of the first display (104) and the second display (106) is in a range of 17% to 30% and 40% to 66%, respectively.

8. The apparatus (100) according to claim 1, being positioned in an outdoor environment and exposed to solar radiation causing development of a temperature gradient across the breadth (b) of the frame (101), wherein the frame (101) further comprises a second air channel (138A, 138B) between each of: the first door (134) and the first display (104); and the second door (136) and the second display, for allowing the internal air flow (130) to form an air curtain (148A, 148B) within the frame for negating the developed temperature gradient across the breadth (b) of the frame.

9. The apparatus (100) according to any of the preceding claims, wherein the frame (101) further comprises at least two side air channels(146A, 146B) for allowing a second internal airflow (140) within the frame for negating the developed temperature gradient.

10. The apparatus (100) according to claim 1, wherein the first heat exchanger (106), or the second heat exchanger (116), 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.

11. The apparatus (100) according to claim 10, wherein the first heat exchanger (106) or the second heat exchanger (116) is selected based on one of allowable pressure limits, thermal performance, temperature ranges, fluid medium, pressure drops across the heat exchanger, fluid flow capacity and material selection.

12. The apparatus (100) according to any of the preceding claims, wherein the first display or the second display comprises 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.

13. The apparatus (100) according to any of the preceding claims, further comprising a controller (150), operatively coupled to the electronic box (110), configured for controlling at least one of: a speed; and a direction, of each of the first array of fans (108), the second array of fans (118), and a third array of fans, to develop one of a cross-air flow, a parallel air flow, a spiral air flow, a circular air flow, or a combination thereof.

14. The apparatus according to any of the preceding claims, further comprising: at least one temperature sensor (152) configured for measuring a current temperature within the frame (101); and - an integrated heating unit (154), arranged along at least one of the first array of fans (108), the second array of fans (118), and a third array of fans, for providing heated air flow, wherein the integrated heating unit is activated when a current temperature falls below a predefined temperature threshold.

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