Electronic display assembly

Abstract

An electronic display assembly is provided. The electronic display assembly includes a housing, a first display module disposed on a first side of the housing, and a first heat exchanger in the housing and thermally connected to the first display module. The first heat exchanger includes a first channel and a second channel. The first channel and the first display module define a first internal heat exchange loop and the second channel defines at least a portion of a first external heat dissipation path. The electronic display assembly also includes a second display module disposed on a second side of the housing opposite the first side, and a second heat exchanger in the housing and thermally connected to the second display module. The second heat exchanger includes a third channel and a fourth channel. The third channel and the second display module define a second internal heat exchange loop and the fourth channel defines at least a portion of a second external heat dissipation path. The electronic display assembly also includes a first seal assembly arranged at a perimeter of the first display module, and a first transparent cover disposed on the first side of the housing and removably attached to the first seal assembly. The first transparent cover is used to cover the first display module. The electronic display assembly also includes a second seal assembly arranged at a perimeter of the second display module, and a second transparent cover disposed on the second side of the housing and removably attached to the second seal assembly. The second transparent cover is used to cover the second display module.

Description

Technical Field

[0001] This invention generally relates to an electronic display assembly. Background Technology

[0002] Cooling systems are used in display devices to prevent overheating. Typically, a cooling system may include an evaporator for cooling air and a fan for circulating the cooled air. This cooling system can be large and its effectiveness may need to be improved.

[0003] In addition, the cooling system's circulation loop is often sealed to prevent the intrusion of dust and other contaminants. However, heat and moisture can accumulate over time, thereby reducing the reliability of the display device. Summary of the Invention

[0004] In one or more embodiments, the present invention provides an electronic display assembly. The electronic display assembly includes a housing, a first display module disposed on a first side of the housing, and a first heat exchanger in the housing and thermally connected to the first display module. The first heat exchanger includes a first channel and a second channel. The first channel and the first display module define a first internal heat exchange loop, and the second channel defines at least a portion of a first external heat dissipation path. The electronic display assembly further includes a second display module disposed on a second side opposite to the first side of the housing, and a second heat exchanger in the housing and thermally connected to the second display module. The second heat exchanger includes a third channel and a fourth channel. The third channel and the second display module define a second internal heat exchange loop, and the fourth channel defines at least a portion of a second external heat dissipation path. The electronic display assembly further includes a first sealing assembly disposed around the periphery of the first display module and a first transparent cover disposed on the first side of the housing for covering the first display module. The first transparent cover is removably attached to the first sealing assembly. The electronic display assembly further includes a second sealing assembly disposed around the periphery of the second display module and a second transparent cover disposed on the second side of the housing for covering the second display module. The second transparent cover is removably attached to the second sealing assembly.

[0005] In one or more embodiments, the present invention provides an electronic display assembly. The electronic display assembly includes a housing, a first display module disposed on a first side of the housing, and a first heat exchanger fixed in the housing and thermally connected to the first display module. The first heat exchanger is configured to act as a first support plate in direct contact with the first display module. The first heat exchanger includes a first channel and a second channel. The first channel and the first display module define a first internal heat exchange loop, and the second channel defines at least a portion of a first external heat dissipation path. The electronic display assembly further includes a second display module disposed on a second side opposite to the first side of the housing, and a second heat exchanger fixed in the housing and thermally connected to the second display module. The second heat exchanger is configured to act as a second support plate in direct contact with the second display module. The second heat exchanger includes a third channel and a fourth channel. The third channel and the second display module define a second internal heat exchange loop, and the fourth channel defines at least a portion of a second external heat dissipation path. The electronic display assembly also includes a first transparent cover for covering the first display module and a second transparent cover for covering the second display module. The first transparent cover is disposed on the first side of the housing and rotatably connected to the housing. The second transparent cover is disposed on the second side of the housing and is rotatably connected to the housing. Attached Figure Description

[0006] When read in conjunction with the accompanying drawings, aspects of the invention will be readily understood from the following embodiments. It should be noted that various features may not be drawn to scale. The dimensions of various features may be arbitrarily increased or decreased for clarity of explanation.

[0007] Figure 1 This is a cross-section of an exemplary electronic display assembly according to an embodiment of the present invention.

[0008] Figure 2 This invention demonstrates a transparent cover having an internal heat exchange circuit exposed to the environment, according to an embodiment of the invention. Figure 1 An exemplary electronic display assembly.

[0009] Figure 3 This is a top view of an exemplary electronic display assembly according to an embodiment of the present invention.

[0010] Common reference numerals are used throughout the accompanying drawings and embodiments to indicate the same or similar components. The invention will become more apparent from the following embodiments in conjunction with the accompanying drawings. Detailed Implementation

[0011] The following disclosure provides numerous different embodiments or instances for implementing various features of the provided subject matter. Specific examples of components and arrangements are described herein. Of course, these components and arrangements are merely examples and are not intended to be limiting. Reference numerals and / or letters may be repeated in various instances of the invention. This repetition is for simplicity and clarity and does not in itself define the relationship between the various embodiments and / or configurations discussed.

[0012] Embodiments of the present invention are described in detail below. However, it should be understood that the present invention provides many applicable concepts that can be embodied in a wide variety of specific contexts. The specific embodiments described are merely illustrative and do not limit the scope of the invention.

[0013] Figure 1 This is a cross-section of an exemplary electronic display assembly 1 according to an embodiment of the present invention. In some embodiments, the electronic display assembly 1 may include a housing 10, a heat exchanger 11, a display module 12, a transparent cover 13, an internal flow generator 14, and an external flow generator 15.

[0014] The housing (or outer casing) 10 may have an inlet 10i, an outlet 10o opposite to the inlet 10i, and a central portion 10c connecting the inlet 10i and the outlet 10o. The central portion 10c may include or define a central path c6 that connects or fluidly conducts to the external environment via the inlet 10i and the outlet 10o. For example, external or ambient airflow may enter the central portion 10c via the inlet 10i and exit the central portion 10c via the outlet 10o.

[0015] The central portion 10c of the housing 10 may have a side 101 and a side 102 opposite to said side 101. Space may be defined on said side 101 and said side 102 respectively.

[0016] For example, the transparent cover 13 and housing 10 may define space on side 101 for accommodating a set of components (including, but not limited to, heat exchanger 11, display module 12, and internal flow generator 14). Similarly, another transparent cover and housing 10 may define space on side 102 for accommodating another heat exchanger 11', another display module, and another internal flow generator. The electronic display assembly 1 may include dual-sided displays. Since the components on both sides are similar, for the sake of simplicity and clarity, the components on side 101 are described in detail only in the figures using reference numerals.

[0017] The heat exchanger 11 may be disposed within the space defined by the housing 10 on the side 101. In some embodiments, the heat exchanger 11 may be attached or secured to the housing 10. In some embodiments, the heat exchanger 11 may be attached to the housing 10 via one or more sealing assemblies 11r1 and 11r2. In some embodiments, the sealing assemblies 11r1 and 11r2 may include rubber gaskets or O-rings. In some embodiments, the sealing assemblies 11r1 and 11r2 may be disposed between the central portion 10c and the heat exchanger 11.

[0018] In some embodiments, the heat exchanger 11 may be configured to act as a support plate for the display module 12. For example, the heat exchanger 11 may provide mechanical support for the display module 12. For example, the heat exchanger 11 may be in direct contact with the display module 12 (e.g., the backlight layer 12c of the display module 12). For example, the display module 12 may have a front side configured to emit light and a rear side in direct contact with the heat exchanger 11.

[0019] For larger display devices, the support plate can significantly increase the thickness and weight of the display device. Furthermore, the support plate positioned between the display module and the heat exchanger can also reduce heat dissipation efficiency. By providing a heat exchanger 11 that also functions as a support plate, the thickness and weight of the display device can be reduced, and heat dissipation efficiency can also be improved.

[0020] In some embodiments, the heat exchanger 11 may be thermally connected to the display module 12 and the housing 10 (e.g., the central portion 10c). In some embodiments, the heat exchanger 11 may be integrally formed or formed as a single piece. In some embodiments, the heat exchanger 11 may include an aluminum extrusion (e.g., an aluminum T-groove extrusion). In some embodiments, the heat exchanger 11 may include multiple channels or units. For example, the heat exchanger 11 may include channel c1 and channel c4.

[0021] Channel c1 may be adjacent to and thermally connected to display module 12. Channel c1 may be connected or fluidly conducted to channels c2 and c3 (details below). Channels c1, c2, and c3 may define an internal heat exchange loop i1.

[0022] Channel c4 may be adjacent to and thermally connected to channel c1. Channel c4 may be adjacent to and thermally connected to the central portion 10c. Channel c4 may be connected or fluidly conducted to the central path c6 of the central portion 10c. Channel c4, the central path c6, and channel c5 of another heat exchanger on side 102 may define an external heat dissipation path e1. In some embodiments, the external heat dissipation path e1 may be configured to dissipate heat from channel c1. In some embodiments, the flow direction of channel c1 may be opposite to the flow direction of channel c4.

[0023] The display module 12 can be disposed in the space defined by the housing 10 on the side 101. In some embodiments, the display module 12 may include a display panel 12a, an optical film 12b, and a backlight layer 12c. The display panel 12a may be disposed between the optical film 12b and the transparent cover 13. The optical film 12b may be disposed between the display panel 12a and the backlight layer 12c. The backlight layer 12c may be disposed between the optical film 12b and the heat exchanger 11.

[0024] For example, display panel 12a may include a glass panel, liquid crystal panel, plastic panel, or other panel. For example, optical film 12b may include a diffuser, reflector, polarizer, filter, light guide assembly, lens, or other optical component. Backlight layer 12c may include multiple light-emitting pixels.

[0025] In some embodiments, the display module 12 may include a channel c2 between the display panel 12a and the optical film 12b.

[0026] A transparent cover 13 may be disposed on side 101 of housing 10. The transparent cover 13 may be rotatably connected to housing 10 via pivot joint 11p. The transparent cover 13 may be removably attached to housing 10 via one or more sealing components 13r1 and 13r2. In some embodiments, sealing components 13r1 and 13r2 may include rubber gaskets or O-rings. In some embodiments, sealing components 13r1 and 13r2 may be disposed between the transparent cover 13 and housing 10. In some embodiments, sealing components 13r1 and 13r2 may be disposed between the transparent cover 13 and display module 12. In some embodiments, sealing components 13r1 and 13r2 may be arranged around the periphery of display module 12.

[0027] In some embodiments, the transparent cover 13 may be configured to cover the display module 12. In some embodiments, the transparent cover 13 and the display panel 12a of the display module 12 may define a channel c3. For example, the channel c3 may be defined between the transparent cover 13 and the display panel 12a.

[0028] In some embodiments, the electronic display assembly 1 may include an internal heat exchange circuit i1 on the side 101. As described, the internal heat exchange circuit i1 may be defined by one or more channels on the side 101, such as channel c1, channel c2, and channel c3. The internal heat exchange circuit i1 may be configured to cool the components on the side 101. In some embodiments, the internal heat exchange circuit i1 may be isolated from the external environment. For example, external airflow may not enter the internal heat exchange circuit i1.

[0029] An internal flow generator 14 may be disposed in the space defined by the housing 10 on the side 101. In some embodiments, the internal flow generator 14 may be disposed adjacent to channel c1. In some embodiments, the internal flow generator 14 may be connected or fluidly conducted to channels c1, c2, and c3. In some embodiments, the internal flow generator 14 may include a fan. In some embodiments, the internal flow generator 14 may be configured to generate internal airflow through the internal heat exchange loop i1.

[0030] Similarly, the electronic display assembly 1 may include an internal heat exchange circuit i2 on the side 102. The internal heat exchange circuit i2 may be defined by one or more channels on the side 102. The internal heat exchange circuit i2 may be configured to cool the components on the side 102. In some embodiments, the internal heat exchange circuit i2 may be isolated from the external environment. For example, external airflow may not enter the internal heat exchange circuit i2.

[0031] In some embodiments, the internal heat exchange circuit i2 may be isolated from the internal heat exchange circuit i1. For example, the internal heat exchange circuit i2 may be separate from or independent of the internal heat exchange circuit i1. For example, the internal heat exchange circuit i2 may be disconnected or fluidly conducted to the internal heat exchange circuit i1. In these cases, contaminants from the external environment, such as dust or moisture, will not enter the space housing the display module 12 and other electrical components, thereby delaying the aging of the components in the space.

[0032] In some embodiments, the electronic display assembly 1 may include an external heat dissipation path e1. As described, the external heat dissipation path e1 may be defined by a channel c4 of the heat exchanger 11 on side 101, a channel c5 of another heat exchanger on side 102, and a central path c6. Channels c4 and c5 may each be connected between the inlet 10i and the outlet 10o via the central path c6. Channels c4 and c5 may be connected to or fluidly conducted to the external environment via the central path c6, the inlet 10i, and the outlet 10o.

[0033] An external heat dissipation path e1 can be configured to conduct heat from internal heat exchange loops i1 and i2 to the external environment. For example, the external heat dissipation path e1 can be shared between internal heat exchange loops i1 and i2.

[0034] In some embodiments, the external heat dissipation path e1 may be isolated from the internal heat exchange loops i1 and i2. For example, the external heat dissipation path e1 may be separate from or independent of the internal heat exchange loops i1 and i2. For example, the external heat dissipation path e1 may be disconnected or fluidly conducted to the internal heat exchange loops i1 and i2.

[0035] An external flow generator 15 may be disposed adjacent to the central portion 10c of the housing 10. The external flow generator 15 may be connected or fluidly conducted to channels c4, c5, and the central path c6. In some embodiments, the external flow generator 15 may include a fan. In some embodiments, the external flow generator 15 may be configured to generate an external airflow through an external heat dissipation path e1.

[0036] According to some embodiments of the present invention, the size of the electronic display assembly 1 is reduced because heat from the internal heat exchange loops i1 and i2 can be dissipated via a single path (i.e., the central path c6).

[0037] Furthermore, only one external flow generator 15 is required, and the display modules of the electronic display assemblies 1 on both sides can be cooled simultaneously. The air pressure generated by the external flow generator 15 is distributed to both channels c4 and c5. Therefore, the air pressure in channel c4 or channel c5 is lower than the air pressure generated by the external flow generator 15 when only one channel is applied.

[0038] Generally, heat dissipation efficiency can be improved by increasing the rotational speed of the flow generator. However, this also increases the air pressure and the noise caused by the air pressure. According to some embodiments of the invention, the air pressure in channel c4 or c5 is lower than the air pressure when only one channel is connected to the external flow generator 15. Therefore, the noise caused by the air pressure is eliminated, while the heat dissipation efficiency of the electronic display assembly 1 remains unchanged.

[0039] Figure 2 This invention demonstrates a transparent cover 13 that exposes the internal heat exchange circuit i1 to the environment, according to an embodiment of the invention. Figure 1 1. An exemplary electronic display assembly.

[0040] In some embodiments, such as Figure 1 As shown, when the transparent cover 13 is closed (or in the first position), the transparent cover 13 can be attached to the housing 10 via sealing assemblies 13r1 and 13r2. The transparent cover 13 and sealing assemblies 13r1 and 13r2 can isolate the internal space of the housing 10 (e.g., internal heat exchange circuit i1) from the external environment (e.g., air). For example, the transparent cover 13 and sealing assemblies 13r1 and 13r2 can define a sealed space.

[0041] In some embodiments, such as Figure 2 As shown, when the transparent cover 13 is open (or in the second position), the internal space of the housing 10 (e.g., the internal heat exchange circuit i1) can be exposed to the external environment (e.g., air).

[0042] According to some embodiments of the present invention, since the transparent cover 13 can be closed or opened, the internal space of the housing 10 can be cleaned and maintained as needed. Therefore, the reliability of the electronic display assembly 1 can be enhanced.

[0043] Figure 3 This is a top view of an exemplary electronic display assembly 3 according to an embodiment of the present invention.

[0044] The electronic display assembly 3 may include three side displays. For example, the electronic display assembly 3 may include a central portion 33 and display modules 30, 31, and 32. The display modules 30, 31, and 32 may be arranged on three sides of the central portion 33. The display modules 30, 31, and 32 may be arranged around the central portion 33.

[0045] Display modules 30, 31, and 32 can each be similar to... Figure 1 The display module 12 is located in the center. The electronic display assembly 3 may include other components, including but not limited to transparent covers, heat exchangers, and internal flow generators located on three sides of the central portion 33. For the sake of simplicity and clarity, Figure 3 Other components are not shown.

[0046] The electronic display assembly 3 may also include an external flow generator disposed adjacent to the central portion 33. Heat from the display modules 30, 31 and 32 can be dissipated via an external heat dissipation path defined by the central portion 33.

[0047] The number of display modules can be determined based on the size and dissipation efficiency (or other design requirements) of the electronic display assembly 3 and is not limited to this embodiment.

[0048] For ease of description, spatial relative terms such as “below,” “under,” “lower,” “above,” “upper,” “left,” “right,” and similar terms are used herein to describe the relationship between one component or feature and another component or feature, as illustrated in the figures. In addition to the orientations depicted in the figures, the spatial relative terms are also intended to cover different orientations of the device during use or operation. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein shall be interpreted accordingly. It should be understood that when a component is referred to as “connected to” or “coupled to” another component, it may be directly connected to or coupled to the other component, or there may be intervening components.

[0049] As used herein, the terms “approximately,” “generally,” “substantially,” and “about” are used to describe and account for small variations. When used in conjunction with an event or situation, the terms may refer to instances in which the event or situation clearly occurs as well as instances in which the event or situation is very close to occurring. As used herein, the term “about” generally means within ±10%, ±5%, ±1%, or ±0.5% of a given value or range, relative to that value or range. A range may be expressed herein as from one endpoint to another or between two endpoints. Unless otherwise specified, all ranges disclosed herein include endpoints. When referring to a numerical value or characteristic as “generally” the same, the term may mean that the value is within ±10%, ±5%, ±1%, or ±0.5% of the average of the values.

[0050] The foregoing summary outlines several embodiments and detailed features of the present invention. The embodiments described herein can be readily used as the basis for designing or modifying other programs and structures to achieve the same or similar purposes and / or attain the same or similar advantages of the embodiments introduced herein. Such equivalent constructions do not depart from the spirit and scope of the invention, and various changes, substitutions, and modifications can be made without departing from the spirit and scope of the invention.

[0051] Symbol Explanation

[0052] 1: Electronic display assembly

[0053] 3: Electronic display assembly

[0054] 10: Shell

[0055] 10c: Central part

[0056] 10i: Entry

[0057] 10o: Export

[0058] 11: Heat exchanger

[0059] 11r1: Sealing assembly

[0060] 11r2: Sealing assembly

[0061] 11p: Pivot joint

[0062] 12: Display Module

[0063] 12a: Display panel

[0064] 12b: Optical film

[0065] 12c: Backlight layer

[0066] 13: Transparent lid

[0067] 13r1: Sealing assembly

[0068] 13r2: Sealing assembly

[0069] 14: Internal Flow Generator

[0070] 15: External Flow Generator

[0071] 30: Display module

[0072] 31: Display Module

[0073] 32: Display module

[0074] 33: Central Part

[0075] 101: Side

[0076] 102: Side

[0077] c1: Channel

[0078] c2: Channel

[0079] c3: Channel

[0080] c4: Channel

[0081] c5: Channel

[0082] c6: Central Path

[0083] e1: External heat dissipation path

[0084] i1: Internal heat exchange circuit

[0085] i2: Internal heat exchange circuit.

Claims

1. An electronic display assembly comprising: case; A first display module is disposed on a first side of the housing; A first heat exchanger is located within the housing and directly contacts the backlight layer of the first display module and is thermally connected to a central portion of the housing. The first heat exchanger includes a first channel and a second channel, wherein the first channel and the first display module define a first internal heat exchange loop and the second channel defines at least a portion of a first external heat dissipation path, wherein the first channel is adjacent to the backlight layer and wherein the second channel is thermally connected via the central portion between an inlet and an outlet of the housing. The second display module is disposed on the second side opposite to the first side of the housing; A second heat exchanger is located in the housing and thermally connected to the second display module. The second heat exchanger includes a third channel and a fourth channel, wherein the third channel and the second display module define a second internal heat exchange loop and the fourth channel defines at least a portion of a second external heat dissipation path. A first sealing assembly is arranged around the periphery of the first display module; A first transparent cover is disposed on the first side of the housing and removably attached to the first sealing assembly for covering the first display module; The second sealing assembly is arranged around the periphery of the second display module; A second transparent cover, which is disposed on the second side of the housing and removably attached to the second sealing assembly, is used to cover the second display module.

2. The electronic display assembly of claim 1, wherein the first transparent cover is rotatably connected to the housing via a first pivot joint, and the second transparent cover is rotatably connected to the housing via a second pivot joint.

3. The electronic display assembly according to claim 1, further comprising: An internal flow generator is disposed on one side of the first channel and configured to generate internal airflow into the first channel, wherein the internal airflow spans the entire back of the first display module and the flow direction of the internal airflow is opposite to the flow direction of the external airflow in the first external heat dissipation path.

4. The electronic display assembly of claim 2, wherein when the first transparent cover is closed, the first transparent cover and the first sealing assembly seal the first internal heat exchange circuit in the housing and isolate the first internal heat exchange circuit from the air, and wherein when the first transparent cover is open, the first transparent cover exposes the first internal heat exchange circuit to the air.

5. The electronic display assembly of claim 4, wherein when the second transparent cover is closed, the second transparent cover and the second sealing assembly seal the second internal heat exchange circuit in the housing and isolate the second internal heat exchange circuit from the air, and wherein when the second transparent cover is open, the second transparent cover exposes the second internal heat exchange circuit to the air.

6. The electronic display assembly of claim 1, wherein the first internal heat exchange circuit is isolated from the second internal heat exchange circuit.

7. The electronic display assembly of claim 1, wherein the first internal heat exchange circuit is isolated from the first external heat dissipation path and wherein the second internal heat exchange circuit is isolated from the second external heat dissipation path.

8. The electronic display assembly of claim 1, wherein each of the first external heat dissipation path and the second external heat dissipation path is connected between the inlet and the outlet of the housing.

9. The electronic display assembly of claim 8, further comprising a central path connected to the first external heat dissipation path and the second external heat dissipation path.

10. The electronic display assembly of claim 1, further comprising a first internal flow generator disposed adjacent to the first channel and a second internal flow generator disposed adjacent to the third channel.

11. The electronic display assembly of claim 1, further comprising an external flow generator fluidly conductive to the first external heat dissipation path and the second external heat dissipation path.

12. The electronic display assembly of claim 1, wherein the first heat exchanger is fixed to the housing and configured to act as a first support plate in direct contact with the first display module.

13. The electronic display assembly of claim 12, wherein the second heat exchanger is fixed to the housing and configured to act as a second support plate in direct contact with the second display module.

14. An electronic display assembly comprising: case; A first display module is disposed on a first side of the housing; A first heat exchanger is fixed in the housing and thermally connected to the first display module and a central portion of the housing. The first heat exchanger is configured to act as a first support plate in direct contact with a first backlight layer of the first display module. The first heat exchanger includes a first channel and a second channel, wherein the first channel and the first display module define a first internal heat exchange loop and the second channel defines at least a portion of a first external heat dissipation path. The first channel is adjacent to the first backlight layer, and the second channel is thermally connected via the central portion between an inlet and an outlet of the housing. The second display module is disposed on the second side opposite to the first side of the housing; A second heat exchanger, fixed in the housing and thermally connected to the second display module and the central portion of the housing, wherein the second heat exchanger is configured to act as a second support plate in direct contact with the second backlight layer of the second display module, wherein the second heat exchanger includes a third channel and a fourth channel, wherein the third channel and the second display module define a second internal heat exchange loop and the fourth channel defines at least a portion of a second external heat dissipation path, wherein the third channel is adjacent to the second backlight layer, and wherein the fourth channel is thermally connected via the central portion between the inlet and outlet of the housing; A first transparent cover is disposed on the first side of the housing and rotatably connected to the housing for covering the first display module; A second transparent cover is disposed on the second side of the housing and rotatably connected to the housing for covering the second display module.

15. The electronic display assembly of claim 14, wherein when the first transparent cover is closed, the first transparent cover seals the first internal heat exchange circuit within the housing and isolates the first internal heat exchange circuit from air, and wherein when the first transparent cover is open, the first transparent cover exposes the first internal heat exchange circuit to air, and wherein when the second transparent cover is closed, the second transparent cover and the second sealing assembly seal the second internal heat exchange circuit within the housing and isolate the second internal heat exchange circuit from air, and wherein when the second transparent cover is open, the second transparent cover exposes the second internal heat exchange circuit to air.

16. The electronic display assembly of claim 15, further comprising: An internal flow generator is disposed on one side of the first channel and configured to generate internal airflow into the first channel, wherein the internal airflow spans the entire back of the first display module and the flow direction of the internal airflow is opposite to the flow direction of the external airflow in the first external heat dissipation path.

17. The electronic display assembly of claim 14, wherein the first internal heat exchange circuit is isolated from the second internal heat exchange circuit.

18. The electronic display assembly of claim 14, wherein the first internal heat exchange circuit is isolated from the first external heat dissipation path and wherein the second internal heat exchange circuit is isolated from the second external heat dissipation path.

19. The electronic display assembly of claim 14, wherein each of the first external heat dissipation path and the second external heat dissipation path is connected between the inlet and the outlet of the housing.

20. The electronic display assembly of claim 19, further comprising a central path connected to the first external heat dissipation path and the second external heat dissipation path.

21. The electronic display assembly of claim 14, further comprising a first internal flow generator disposed adjacent to the first channel and a second internal flow generator disposed adjacent to the third channel.

22. The electronic display assembly of claim 14, further comprising an external flow generator fluidly conductive to the first external heat dissipation path and the second external heat dissipation path.

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