Outdoor waterproof heat dissipation display screen

Abstract

The utility model provides an outdoor waterproof heat dissipation display screen which comprises a display screen body, a frame and a rear cover, the display screen body and the rear cover are fixed to the front face and the back face of the frame respectively, a middle frame partition is further arranged between the display screen body and the rear cover, and a heat dissipation cavity is formed between the middle frame and the rear cover by installing a sealing frame. A circuit module is installed on the back of the heat dissipation cavity and wrapped by a module frame, the module frame is further provided with a detachable sealing cover, and a plurality of waterproof connectors are arranged on one side of the module frame and electrically connected with the outside. The fan on the rear cover blows air into the heat dissipation cavity, takes away heat generated by the circuit module and the display screen and discharges the heat from the air outlet holes of the heat dissipation cavity. According to the utility model, the circuit module and the display screen are respectively separated and independently sealed, so that a heat dissipation cavity is formed between the circuit module and the display screen, air can be blown into the heat dissipation cavity to take away heat, and not only is the waterproof performance improved, but also the heat dissipation capability is improved; the joints of the sealing cover and the rear cover are sealed by sealing rings, glue is not needed, and assembly, disassembly and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to an outdoor waterproof and heat-dissipating display screen. Background Art

[0002] With the development of society and the progress of technology, display screens are more and more widely used, not only limited to indoor environments, but also more and more common in outdoor applications, such as billboards, traffic signs, outdoor stage backgrounds, etc. These outdoor display screens need to face various complex environmental conditions, including but not limited to extreme temperature changes, rain, dust, ultraviolet radiation, etc. Therefore, the design of outdoor display screens must take into account their durability and reliability, especially in terms of waterproofing and heat dissipation.

[0003] Although the current outdoor display screens on the market already have a certain degree of waterproof function, most of them are achieved through simple sealing treatment. This method can prevent rainwater from directly invading to a certain extent, but during long-term use, especially under frequent temperature and humidity changes, condensation may still occur inside the display screen, causing the electronic components to be affected by moisture and malfunction. In addition, since outdoor display screens are usually large in size and high in power, they generate relatively more heat. If effective heat dissipation measures are not taken, the high temperature inside the display screen will lead to a deterioration of the display effect, and even damage the electronic components, shortening the service life.

[0004] In the prior art, the waterproof measures for outdoor display screens mainly focus on the sealing of the front surface of the display screen and the joints of the housing, and the gaps are filled with waterproof glue, resulting in great difficulty in maintenance; for heat dissipation, most use natural heat dissipation methods, that is, relying on the metal housing of the display screen itself for heat dissipation, and some use fan heat dissipation, but the waterproof performance is insufficient, and the filter screen is often blocked, and the heat dissipation capacity is greatly reduced after a period of time.

[0005] Therefore, how to ensure good waterproof performance of outdoor display screens while effectively dissipating heat has become one of the urgent problems to be solved at present. Summary of the Utility Model

[0006] The utility model aims to provide an outdoor waterproof and heat-dissipating display screen with a simple structure, good waterproof performance and high heat-dissipating efficiency. The utility model provides an outdoor waterproof and heat-dissipating display screen, which specifically includes a display screen, a frame and a rear cover. The display screen is fixed in front of the frame, and the rear cover is installed on the back of the frame. A middle frame partition is also provided between the display screen and the rear cover, and a heat-dissipating cavity is formed between the middle frame and the rear cover through an installation sealing frame. On the back of the heat-dissipating cavity, that is, on the outside of the rear cover, a circuit module is installed. The circuit module is wrapped by a module frame, and the module frame is also provided with a detachable sealing cover. A circuit module sealing cavity is formed between the sealing cover and the module frame. Several waterproof connectors are arranged on one side of the module frame for external electrical connection. A fan is also installed on the rear cover. The fan blows air into the heat-dissipating cavity to take away the heat generated by the circuit module and the display screen and discharge it from the air outlet hole of the heat-dissipating cavity. This technical solution separates and seals the circuit module and the display screen respectively, so that a heat-dissipating cavity is formed between the circuit module and the display screen. Water vapor can be blown into the heat-dissipating cavity to take away the heat, which not only improves the waterproof performance but also improves the heat-dissipating ability.

[0007] Further, the display screen is hermetically connected to the circuit module through a waterproof FPC cable.

[0008] Further, a waterproof groove is formed on the back of the frame, and the rear cover is hermetically connected to the frame through a first sealing ring installed in the waterproof groove, without the need for gluing, which is convenient for loading, unloading and maintenance.

[0009] More preferably, the connections between the top of the module frame and the sealing cover are bent to form horizontally opposite "U" shapes, and the ends are wrapped by a second sealing ring and a third sealing ring. When the sealing cover is fixed on the module frame, double sealing is formed, ensuring sealing and waterproofing while also being convenient for loading, unloading and maintenance.

[0010] For further description of the foregoing solution, the fan is installed on the side of the module frame and is wrapped by a fan cover on the rear cover. The fan cover is provided with several air inlet holes, and the fan is a waterproof fan.

[0011] More preferably, the speaker of the circuit module is installed on the module frame, faces the fan cover and is communicated with the fan cover, and the sound is amplified through the fan cover; at the same time, the vibration of the speaker drives the heat-dissipating cavity to achieve a more beautiful sound effect.

[0012] More preferably, the air outlet hole is formed at the edge of the heat-dissipating cavity, and the side of the sealing frame close to the heat-dissipating cavity forms an inclined surface, which is beneficial to drainage and sewage discharge; a fourth sealing ring is also installed on the abutting surface between the sealing frame and the rear cover to improve the overall waterproof performance.

[0013] Optionally, a light sensor is also installed on the front of the display screen to sense the external light intensity and adjust the screen brightness. A handle is also installed on the rear cover for convenient handling and transportation.

[0014] Compared with the prior art, the utility model separates and seals the circuit module and the display screen respectively, so that a heat dissipation cavity is formed between the circuit module and the display screen. Water vapor can be blown into the heat dissipation cavity to take away heat, which not only improves the waterproof performance but also enhances the heat dissipation capacity. Moreover, the fan does not require a filter, effectively preventing blockage. The connections between the sealing cover and the rear cover are sealed with sealing rings, eliminating the need for glue, which facilitates disassembly, loading, and maintenance. The speaker realizes multiple sound amplification and bass effects through the fan cover, the heat dissipation cavity, and the circuit module sealing cavity. Through multiple sealing designs, the present application achieves good waterproof performance. By setting up the heat dissipation cavity and the fan, both sides of the display screen and the circuit module are in contact with air, improving the heat dissipation efficiency and thus extending the service life of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a front schematic diagram provided by an embodiment of the present utility model;

[0017] Figure 2 It is a back schematic diagram provided by an embodiment of the present utility model;

[0018] Figures 3 - 5 It is an exploded schematic diagram provided by an embodiment of the present utility model;

[0019] Figure 6 It is an overall cross-sectional view provided by an embodiment of the present utility model;

[0020] Figure 7 It is a partially enlarged schematic diagram of part A provided by an embodiment of the present utility model;

[0021] Figure 8 It is a partially enlarged schematic diagram of part B provided by an embodiment of the present utility model;

[0022] Figure 9 It is a partial cross-sectional view provided by an embodiment of the present utility model.

[0023] Among them, the reference numerals in the drawings are as follows:

[0024] 1. Display screen; 11. Flexible cable; 2. Frame; 21. First sealing ring; 3. Rear cover; 31. Module frame; 32. Sealing cover; 321. Second sealing ring; 322. Third sealing ring; 33. Circuit module; 331. Speaker; 34. Handle; 35. Air outlet hole; 36. Waterproof connector; 4. Middle frame; 41. Sealing frame; 411. Inclined surface; 42. Fourth sealing ring; 5. Fan cover; 51. Fan; 52. Air inlet hole; 6. Circuit module sealing cavity; 7. Heat dissipation cavity; 8. Light sensor.

[0025] Through the above-mentioned drawings, specific embodiments of the present invention have been shown, and more detailed descriptions will be given hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein refer to the positional relationship in the drawings.

[0028] To make the technical solutions and advantages of the present invention clearer, the following will further describe the implementation manners of the present invention in detail in conjunction with the drawings.

[0029] Please refer to Figures 1 - 9As shown in the figure, the utility model provides an outdoor waterproof and heat-dissipating display screen, which specifically includes a display screen 1, a frame 2, and a rear cover 3. The display screen 1 is fixed in front of the frame 2, and the rear cover 3 is installed on the back of the frame 2. A middle frame 4 is also provided between the display screen 1 and the rear cover 3 to separate them. A heat-dissipating cavity 7 is formed between the middle frame 4 and the rear cover 3 through an installation sealing frame 41. On the back of the heat-dissipating cavity 7, that is, on the outer side of the rear cover 3, a circuit module 33 is installed. The circuit module 33 is wrapped by a module frame 31. The module frame 31 is also provided with a detachable sealing cover 32. A circuit module sealing cavity 6 is formed between the sealing cover 32 and the module frame 31. Several waterproof connectors 36 are provided on one side of the module frame 31 for external electrical connection. A fan 51 is also installed on the rear cover 3. The fan 51 blows air into the heat-dissipating cavity 7, takes away the heat generated by the circuit module 33 and the display screen 1, and discharges it from the air outlet hole 35 of the heat-dissipating cavity 7. The display screen 1 is hermetically connected to the circuit module 33 through a waterproof FPC cable 11. As Figure 8 shown, a waterproof groove is opened on the back of the frame 2. The rear cover 3 is hermetically connected to the frame 2 through a first sealing ring 21 installed in the waterproof groove, without the need to apply glue, which is convenient for loading, unloading, and maintenance. As Figure 1 shown, a light sensor 8 is also installed on the front of the display screen 1, which is used to sense the external light intensity and adjust the screen brightness. As Figure 2 shown, a handle 34 is also installed on the rear cover 3, which is convenient for taking and carrying.

[0030] As Figure 7 、 9 shown, the top of the module frame 31 and the connection part of the sealing cover 32 are both bent to form a horizontally opposite "U" shape, and the ends are wrapped by a second sealing ring 321 and a third sealing ring 322 respectively. When the sealing cover 32 is fixed on the module frame 31, a double seal is formed, ensuring sealing and waterproofing while also being convenient for loading, unloading, and maintenance.

[0031] As Figure 6 、 7 shown in 8, the fan 51 is installed on the side of the module frame 31 and is wrapped by a fan cover 5 on the rear cover 3. The fan cover 5 is provided with several air inlet holes 52, and the fan 51 is a waterproof fan. As Figure 9 shown, the speaker 331 of the circuit module 33 is installed on the module frame 31, and the main body is in the circuit module sealing cavity 6, and faces the fan cover 5 and communicates with the fan cover 5 to realize sound amplification through the fan cover 5; at the same time, the vibration of the speaker 331 drives the heat-dissipating cavity 7 and the circuit module sealing cavity to achieve a more beautiful sound effect.

[0032] Please refer to Figure 8 shown, the air outlet hole 35 is opened on the edge of the heat-dissipating cavity 7, and a slope 411 is formed on one side of the sealing frame 41 close to the heat-dissipating cavity 7, which is beneficial for draining water and sewage; a fourth sealing ring 42 is also installed on the abutting surface between the sealing frame 41 and the rear cover 3 to improve the overall waterproof performance.

[0033] To understand the disclosure of the present utility model more thoroughly and comprehensively, the following further explains its principle in combination with the usage method.

[0034] During actual assembly, first fix the display screen 1 in front of the frame 2 with glue, then fix and install the middle frame 4 inside the frame 2. Next, install the first sealing ring 21 in the groove of the frame 2, and install two fourth sealing rings 42 on the top of the sealing frame 41. As Figure 8 shown, fix the rear cover 3 to the frame 2 and the sealing frame 41 with screws. Then install the circuit module 33 and the speaker 331 in the circuit module sealing cavity 6, connect the wiring harness 11 of the display screen 1, and connect it to the external circuit through the waterproof connector 36. Next, install the sealing cover 32 with a sealing ring on the module frame 31, and fix and install the fan 51, the fan cover 5, and the handle 34.

[0035] After power-on, when the temperature sensor of the circuit module 33 monitors that the temperature reaches the set value, the fan 51 is turned on. As Figure 7 、 8 shown, air is blown into the heat dissipation cavity 7, taking away the heat of the display screen 1 and the circuit module 33, which not only improves the waterproof performance but also improves the heat dissipation capacity. Moreover, the fan 51 does not need to be installed with a filter, effectively preventing blockage. The speaker 331 realizes multiple sound amplification and bass effects through the fan cover 5, the heat dissipation cavity 7, and the circuit module sealing cavity 6. During loading and unloading, since there is no glue, the sealing cover 32 and the rear cover 3 can be easily opened, facilitating maintenance and reducing the maintenance cost.

[0036] Those skilled in the art will easily think of other implementation schemes of the present utility model after considering the specification and practicing the present utility model. This application aims to cover any variations, uses, or adaptive changes of the present utility model, which follow the general principles of the present utility model and include the well-known common knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the following claims.

[0037] It should be understood that the present utility model is not limited to the precise structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

Claims

1. An outdoor waterproof heat dissipation display screen, characterized in that: The invention comprises a display screen (1), a frame (2), and a back cover (3), wherein the display screen (1) is fixed in front of the frame (2), the back cover (3) is installed on the back of the frame (2), a middle frame (4) is provided between the display screen (1) and the back cover (3), and a heat dissipation cavity (7) is formed between the middle frame (4) and the back cover (3) by installing a sealing frame (41); a circuit module (33) is installed on the back of the heat dissipation cavity (7), that is, on the outside of the back cover (3); the circuit module (33) is wrapped by the module frame (31), the module frame (31) is also provided with a detachable sealing cover (32), and a plurality of waterproof connectors (36) are provided on one side of the module frame (31) for electrical connection with the outside; a fan (51) is also installed on the back cover (3), and the fan (51) blows air into the heat dissipation cavity (7), takes away the heat generated by the circuit module (33) and the display screen (1), and discharges the heat from the air outlet (35) of the heat dissipation cavity (7).

2. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The display screen (1) is sealedly connected to the circuit module (33) via a waterproof FPC cable (11).

3. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The frame (2) is provided with a waterproof groove on the back, and the back cover (3) is sealedly connected to the frame (2) via a first sealing ring (21) installed in the waterproof groove.

4. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The top of the module frame (31) and the connection between the sealing cover (32) are bent to form a horizontally opposite "U" shape, and the ends are wrapped by the second sealing ring (321) and the third sealing ring (322), so that a double seal is formed when the sealing cover (32) is fixed on the module frame (31).

5. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The fan (51) is installed on the side of the module frame (31) and is wrapped on the back cover (3) by a fan cover (5). The fan cover (5) is provided with a plurality of air inlet holes (52), and the fan (51) is a waterproof fan.

6. The outdoor waterproof heat dissipation display screen according to claim 5, characterized in that: The speaker (331) of the circuit module (33) is mounted on the module frame (31), and faces the fan cover (5) and is in communication with the fan cover (5).

7. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The air outlet (35) is provided at the edge of the heat dissipation cavity (7), and a slope (411) is formed on the side of the sealing frame (41) close to the heat dissipation cavity (7), which is conducive to drainage and sewage discharge; a fourth sealing ring (42) is also installed on the contact surface between the sealing frame (41) and the rear cover (3).

8. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The front of the display screen (1) is also provided with a light sensor (8) for sensing the external light intensity and adjusting the screen brightness.

9. The outdoor waterproof heat dissipation display screen according to claim 1, characterized in that: The rear cover (3) is also provided with a handle (34).

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