Display equipment for heat exchange and heat dissipation of internal and external circulation of air

Abstract

The utility model belongs to the technical field of display equipment, and particularly relates to air internal and external circulation heat exchange heat dissipation display equipment which comprises a display screen and a heat exchanger, the heat exchanger is located on the rear half side of the display screen, and an external circulation fan unit is installed at the bottom of the heat exchanger. An inner circulation fan unit is installed on the side, close to the center of the display screen, of the heat exchanger, and the heat exchanger is provided with an outer circulation air duct directly facing the outer circulation fan unit and an inner circulation air duct directly facing the inner circulation fan unit. The computer case has the heat dissipation function of the mutually independent inner and outer circulating air ducts, is good in heat dissipation effect, can effectively prevent moisture, dust and salt mist in the outdoor environment from entering the case to affect the reliability of the equipment, and can effectively prolong the service life of the display equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of display equipment, and in particular relates to a display equipment with air internal and external circulation heat exchange and heat dissipation. Background Art

[0002] With the development of economy and the improvement of living standards, as well as the rapid growth of paperless advertising media and the construction of smart cities, the application of outdoor display signage technology has been rapidly growing in recent years. However, the current outdoor display equipment faces the following problems when in use: high power consumption and high heat of LCD high-brightness display, high temperature outdoor light, outdoor environmental moisture, dust, salt spray, etc., which lead to poor heat dissipation effect, making the current outdoor display signage have poor reliability and short service life. Therefore, a new heat dissipation solution is urgently needed to solve the problem of heat dissipation and protection of outdoor display equipment, so that the new solution can not only solve the heat dissipation but also meet the IP66 protection of the whole machine. Utility Model Content

[0003] The purpose of the utility model is to provide a display device with heat dissipation by air internal and external circulation heat exchange in view of the deficiencies of the prior art, so as to effectively improve the heat dissipation efficiency of the device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A display device with heat exchange and heat dissipation by internal and external air circulation, comprising a display screen and a heat exchanger, wherein the heat exchanger is located at the rear half of the display screen, an external circulation fan unit is installed at the bottom of the heat exchanger, and an internal circulation fan unit is installed on one side of the heat exchanger close to the center of the display screen, and the heat exchanger has an external circulation air duct directly opposite to the external circulation fan unit and an internal circulation air duct directly opposite to the internal circulation fan unit.

[0006] Furthermore, a guide plate is provided on a side of the heat exchanger away from the internal circulation fan unit, and a surface of the guide plate extends toward the front of the display screen.

[0007] Furthermore, a plurality of columns of the outer circulation air ducts and a plurality of rows of the inner circulation air ducts are alternately arranged from the front surface to the rear surface of the heat exchanger.

[0008] Furthermore, the outer circulation air duct and the inner circulation air duct are perpendicular to each other and are not connected to each other, so as to ensure that the outer circulation heat dissipation and the inner circulation air flow in the equipment to achieve cooling are independent of each other and do not affect each other.

[0009] Furthermore, a hollow-structured external circulation air duct connector is respectively provided at the bottom of the external circulation fan unit and the top of the heat exchanger. The external circulation air duct connector is a frame-type structure with a cavity in the middle. The airflow and wind flow of the external circulation can flow from bottom to top in the cavity of the external circulation air duct connector and pass through the external circulation fan unit and the external circulation air duct.

[0010] Furthermore, a functional circuit board is arranged behind the display screen and is horizontally parallel to the heat exchanger. The functional circuit board is arranged close to the internal circulation fan unit, wherein the internal circulation airflow and windflow in the device can pass through the functional circuit board, the internal circulation fan unit and the internal circulation air duct in sequence, so as to efficiently take away the heat generated by the functional circuit board when it is powered on.

[0011] Furthermore, a light box is arranged behind the heat exchanger.

[0012] Furthermore, the display screen, the heat exchanger, the external circulation fan unit and the internal circulation fan unit are all installed in a cabinet, the top of the cabinet has an exhaust hole facing the external circulation air duct, and the bottom of the cabinet has an air inlet hole facing the external circulation fan unit.

[0013] Furthermore, door panels are hinged on the front and rear sides of the cabinet respectively, and the sides of the door panels are connected to the cabinet through gas struts. A waterproof rubber strip is provided between the cabinet and the door panels to seal the gap between the cabinet and the door panels, wherein transparent protective glass is embedded on the surface of the door panels, and transparent glass with excellent protective performance is installed in the door panels to provide sealing and transparent display for the entire machine.

[0014] Furthermore, there is a gap of at least 10mm to 20mm between the display screen and the door panel opposite to the display screen to form a front air duct of the display screen. The gap can promote the front heat dissipation of the display screen and can effectively solve the problem of heat accumulation caused by thermal radiation caused by solar radiation glass and display screen.

[0015] Furthermore, a mounting frame is provided in the cabinet, and the display screen, the heat exchanger, the external circulation fan unit and the internal circulation fan unit are all installed on the mounting frame.

[0016] The beneficial effects of the utility model are as follows: the utility model comprises a display screen and a heat exchanger, the heat exchanger is located at the rear half of the display screen, an external circulation fan unit is installed at the bottom of the heat exchanger, an internal circulation fan unit is installed at one side of the heat exchanger close to the center of the display screen, the heat exchanger has an external circulation air duct directly facing the external circulation fan unit and an internal circulation air duct directly facing the internal circulation fan unit, wherein the heat exchanger is divided into an external circulation and an internal circulation according to the airflow for heat dissipation, the external circulation is that the outdoor fresh air flows through the external circulation fan unit and then enters the external circulation air duct of the heat exchanger to flow and take away the heat; the internal circulation is that the airflow in the equipment enters the heat exchanger from the internal circulation fan unit The inner circulation air duct forms a cooling airflow and then enters the front and back of the display screen respectively to realize a circular circulation around the heat source and the heat exchanger. The airflow after the inner circulation cooling can dissipate heat for electronic devices such as the display screen. The airflow takes away the heat during the flow and then enters the heat exchanger, and circulates continuously to realize the heat dissipation of the whole machine. In addition, the inner and outer circulation airflows are independent, so that the utility model has the heat dissipation functions of the inner and outer circulation air ducts which are independent of each other, and the heat dissipation effect is good. The inner and outer circulation cross heat exchange process is stable and reliable. The display screen, heat exchanger and fan unit are all inside the equipment, which prevents moisture, dust and salt spray from the outdoor environment from entering the chassis, and can effectively extend the service life of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0018] Figure 2 It is an exploded schematic diagram of the utility model.

[0019] Figure 3 The utility model is a schematic diagram of the structure of the display screen, heat exchanger, fan unit and circuit board.

[0020] Figure 4 It is a three-dimensional structural diagram of the heat exchanger of the utility model.

[0021] Figure 5 It is a schematic diagram of the internal circulation process of the utility model.

[0022] Figure 6 It is a bottom view of the utility model.

[0023] Figure 7 This is one of the schematic diagrams of the external circulation process of the utility model.

[0024] Figure 8 This is the second schematic diagram of the external circulation process of the utility model.

[0025] Among them: 1. display screen; 2. heat exchanger; 21. external circulation air duct; 22. internal circulation air duct; 3. external circulation fan unit; 4. internal circulation fan unit; 5. guide plate; 6. external circulation air duct connector; 7. functional circuit board; 8. light box; 9a. cabinet; 9b. door panel; 91. exhaust hole; 92. air inlet hole; 10. gas strut; 11. waterproof rubber strip. DETAILED DESCRIPTION

[0026] If certain words are used in the specification and claims to refer to specific components, those skilled in the art should understand that manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. As mentioned throughout the specification and claims, "including" is an open term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0027] In the description of the present invention, it should be understood that the terms "top", "bottom", "up", "down", "front", "back", "left", "right", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0029] The following is combined with Figures 1 to 8 The utility model is further described in detail with specific embodiments, but is not intended to limit the utility model.

[0030] Example 1

[0031] A display device with efficient heat dissipation through internal and external circulation, see Figures 1 to 3, including a display screen 1 and a heat exchanger 2, the heat exchanger 2 is located on the rear half of the display screen 1, an external circulation fan unit 3 is installed at the bottom of the heat exchanger 2, an internal circulation fan unit 4 is installed on one side of the heat exchanger 2 close to the center of the display screen 1, and the heat exchanger 2 has an external circulation air duct 21 facing the external circulation fan unit 3 and an internal circulation air duct 22 facing the internal circulation fan unit 4.

[0032] In the device, see Figures 4 to 8 , the solid arrows represent the airflow of the internal circulation, and the dotted arrows represent the airflow of the external circulation. The airflow of the heat exchanger 2 is divided into two types: external circulation and internal circulation. The external circulation is the outdoor fresh air flow that enters the bottom of the cabinet 9a and exits at the top, or enters the top and exits at the bottom, and the outdoor fresh air flow needs to pass through the external circulation fan unit 3 and then enter the external circulation duct 21 of the heat exchanger 2 to flow and take away heat and dissipate heat; the internal circulation is the airflow in the equipment that is transmitted from the internal circulation fan unit 4 to the internal circulation duct 22 to realize the left and right circulation of the airflow in the cabinet 9a, and the airflow enters the internal circulation duct 22 of the heat exchanger 2 from the internal circulation fan unit 4 to form a cooling airflow and then enters the front and back of the display screen 1 respectively to realize a circular circulation around the heat source. The multiple fans in the internal circulation fan unit 4 are arranged at intervals in the up and down directions. The airflow after the internal circulation cooling can dissipate heat for electronic devices such as the display screen 1, and the airflow takes away heat during the flow and enters the heat exchanger 2 again, and then circulates continuously to realize the heat dissipation of the whole machine.

[0033] Preferably, multiple rows of external circulation air ducts 21 and multiple rows of internal circulation air ducts 22 are alternately arranged from the front surface to the rear surface of the heat exchanger 2, and the external circulation air ducts 21 and the internal circulation air ducts 22 are perpendicular to each other and not connected to each other.

[0034] Preferably, a guide plate 5 is provided on the side of the heat exchanger 2 away from the internal circulation fan unit 4. Figure 5 As shown, during the internal circulation process of the equipment, the high-temperature airflow passes through the internal circulation fan unit 4 and enters the multi-row spaced internal circulation duct 22 of the heat exchanger 2, and the cooled airflow coming out from the side of the multi-row spaced internal circulation duct 22 of the heat exchanger 2 close to the guide plate 5 is transmitted along the surface of the guide plate 5, so that the cooled airflow is transmitted from right to left along the front and rear surfaces of the display screen 1 to achieve rapid cooling of the surface of the display screen 1. With the cooperation of the internal circulation fan unit 4, the multi-row spaced internal circulation duct 22 of the heat exchanger 2 and the guide plate 5, the front and rear surfaces of the display screen 1 can form an air duct that achieves efficient cooling.

[0035] The external circulation fan unit 3 has a plurality of fans arranged at intervals in a transverse direction. The plurality of fans of the external circulation fan unit 3 are installed in a protective cover. The protection grade of the external circulation fan unit 3 can reach IP66.

[0036] Preferably, the display screen 1, the heat exchanger 2, the external circulation fan unit 3 and the internal circulation fan unit 4 are all installed in the cabinet 9a, the top of the cabinet 9a has an exhaust hole 91 facing the external circulation air duct 21, and the bottom of the cabinet 9a has an air inlet hole 92 facing the external circulation fan unit 3, so that the airflow in the external circulation can flow efficiently.

[0037] Preferably, the front and rear sides of the cabinet 9a are respectively hinged with door panels 9b with glass, and the two long sides of the door panel 9b are connected to the cabinet 9a through gas struts 10, wherein the surface of the door panel 9b is embedded with transparent protective glass, and the cabinet 9a and the door panel 9b form a chassis. The cabinet 9a and the door panel 9b are sealed reliably by closing the door and compressing the rubber strip, and the compressed rubber strip is a waterproof rubber strip 11. The waterproof rubber strip 11 is used to seal the gap between the cabinet 9a and the door panel 9b, which can completely isolate water vapor, dust, and salt spray from entering the chassis, thereby avoiding damage to the equipment, and can effectively ensure the internal circulation of the airflow to isolate it from the outside world.

[0038] Preferably, there is a gap of at least 10 mm to 20 mm between the display screen 1 and the door panel 9b opposite to the display screen 1 to form a front air duct of the display screen 1. The gap can promote the front heat dissipation of the display screen 1 and can effectively solve the problem of heat accumulation caused by thermal radiation from the glass of the door panel 9b and the display screen 1 due to solar radiation.

[0039] Preferably, the bottom of the external circulation fan unit 3 and the top of the heat exchanger 2 are respectively provided with an external circulation air duct connector 6 with a hollow structure, and the external circulation air duct connector 6 is a frame-type structure with a cavity in the middle. The external circulation air duct connector 6 at the bottom of the external circulation fan unit 3 can be arranged corresponding to the air inlet hole 92 at the bottom of the cabinet 9a, and the external circulation air duct connector 6 at the top of the heat exchanger 2 can be arranged corresponding to the exhaust hole 91 at the top of the cabinet 9a. The airflow and wind flow of the external circulation can flow from bottom to top in the cavity of the external circulation air duct connector 6 at the bottom of the external circulation fan unit 3 and pass through the external circulation fan unit 3 and the external circulation air duct 21 to reach the cavity of the external circulation air duct connector 6 at the top of the heat exchanger 2, and the airflow of the external circulation can be discharged from the exhaust hole 91 at the top of the cabinet 9a.

[0040] Preferably, a functional circuit board 7 is arranged behind the display screen 1 and is parallel to the heat exchanger 2. The functional circuit board 7 is arranged close to the internal circulation fan unit 4. The functional circuit board 7 can ensure the power supply and operation of the equipment, and the internal circulation airflow in the equipment can also take away the heat generated in the functional circuit board 7.

[0041] Preferably, the display device may be an outdoor high-brightness LCD digital signage, which uses a cross-flow heat exchanger for efficient heat dissipation.

[0042] Example 2

[0043] Preferably, a light box 8 is provided behind the heat exchanger 2. The light box 8 uses an LED backlight and can be mounted on the cabinet 9a so as to be rotatable up and down.

[0044] Preferably, a locking member for locking each door panel 9b is also provided in the cabinet 9a.

[0045] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0046] Obviously, the utility model has good sealing, high protection level, good heat dissipation performance, and has the heat dissipation function of independent internal and external circulation ducts.

[0047] According to the disclosure and teaching of the above description, those skilled in the art to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A display device with heat exchange and heat dissipation by air internal and external circulation, characterized in that: include: A display screen (1) and a heat exchanger (2), wherein the heat exchanger (2) is located on the rear half of the display screen (1); An external circulation fan unit (3) is installed at the bottom of the heat exchanger (2), and an internal circulation fan unit (4) is installed on one side of the heat exchanger (2) close to the center of the display screen (1); The heat exchanger (2) has an external circulation air duct (21) facing the external circulation fan unit (3) and an internal circulation air duct (22) facing the internal circulation fan unit (4).

2. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1, characterized in that: A guide plate (5) is provided on the side of the heat exchanger (2) away from the internal circulation fan unit (4).

3. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1 or 2, characterized in that: A plurality of columns of the outer circulation air ducts (21) and a plurality of rows of the inner circulation air ducts (22) are alternately arranged from the front surface to the rear surface of the heat exchanger (2).

4. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1 or 2, characterized in that: The outer circulation air duct (21) and the inner circulation air duct (22) are perpendicular to each other and are not connected to each other.

5. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1 or 2, characterized in that: The bottom of the external circulation fan unit (3) and the top of the heat exchanger (2) are respectively provided with external circulation air duct connectors (6) with a hollow structure.

6. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1 or 2, characterized in that: A functional circuit board (7) is arranged behind the display screen (1) and is arranged in parallel with the heat exchanger (2). The functional circuit board (7) is arranged close to the internal circulation fan unit (4).

7. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1 or 2, characterized in that: A light box (8) is arranged behind the heat exchanger (2).

8. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 1 or 2, characterized in that: The display screen (1), the heat exchanger (2), the external circulation fan unit (3) and the internal circulation fan unit (4) are all installed in a cabinet (9a); the top of the cabinet (9a) has an exhaust hole (91) facing the external circulation air duct (21); and the bottom of the cabinet (9a) has an air inlet hole (92) facing the external circulation fan unit (3).

9. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 8, characterized in that: Door panels (9b) are hingedly connected to the front and rear sides of the cabinet (9a), and the side of the door panel (9b) is connected to the cabinet (9a) via a gas strut (10). A waterproof rubber strip (11) is provided between the cabinet (9a) and the door panel (9b) for sealing a gap between the cabinet (9a) and the door panel (9b).

10. The display device with heat exchange and heat dissipation by air internal and external circulation as claimed in claim 9, characterized in that: A transparent protective glass is embedded on the surface of the door panel (9b), and a gap of at least 10 mm to 20 mm is provided between the display screen (1) and the door panel (9b) facing the display screen (1) to form a front air duct of the display screen (1).

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