Radiating structure of backpack type light-emitting diode (LED) advertising board

Abstract

A backpack type LED advertising board heat dissipation structure comprises a shell, an LED screen, a battery, a convection assembly, a screen heat removal assembly and a battery heat removal assembly. The LED screen is arranged on the front side of the shell, one face of the LED screen is displayed outwards, and the other face of the LED screen faces the interior of the shell. The battery is installed on the rear side of the shell and arranged in the shell, and the horizontal position of the battery is lower than that of the LED screen. An air path formed by the convection assembly penetrates through the shell in the vertical direction; air paths formed by the screen heat removal assembly and the battery heat removal assembly penetrate through the shell in the horizontal direction. And the air path of the screen heat removal assembly is higher than that of the battery heat removal assembly. Based on heat dissipation of the scheme, the air flow speed is high, the air volume is large, heat is dissipated, and therefore the heat dissipation efficiency of the LED advertising board in the bearing state is integrally improved.

Description

Technical Field

[0001] The present application relates to the technical field of LED billboards, and more specifically, to a heat dissipation structure of a backpack-type LED billboard. Background Art

[0002] LED billboards can adapt to various lighting environments, display simple information, and are widely used in commercial displays, fan support, and city signs. In order to expand the display range of billboards, existing industry manufacturers have proposed mobile LED billboards, which are specifically equipped with lithium battery packs and change the power supply mode to enable LED billboards to be used in mobile environments, making them more suitable for use in rallies, parades, fan meetings, entertainment events, etc.

[0003] There are many ways to carry LED billboards used in mobile environments. By adding a handle, they can be carried and displayed by hand; in addition, a shoulder strap can be added to carry and display the billboard on the back.

[0004] The use scenario of the backpack LED billboard is that the user puts the billboard on the back by means of double shoulders or one shoulder diagonally. At this time, the front side of the LED billboard, that is, the side of the LED billboard shell with the LED screen facing the user's back, displays the content to the outside; the back side of the LED billboard, that is, the other side of the shell opposite to the LED screen, faces the user's back. This causes heat dissipation problems when used for a long time.

[0005] Specifically, the main heat sources of backpack LED billboards include LED screens and lithium battery packs. Heat accumulation will affect the normal display of the LED screen and reduce the endurance and service life of the lithium battery; in severe cases, it will also cause safety hazards to the use of lithium batteries. The existing heat dissipation methods are usually the rear side near, side exhaust, or side intake, rear exhaust, through a shorter wind path in a unit time to maintain a large air volume to achieve rapid heat exchange. However, because the back of the backpack LED billboard is in contact with the user's back, the solution based on the rear intake lacks space to achieve sufficient negative pressure due to the obstruction of the human body or clothing fabric; the solution based on the rear exhaust causes hot air to continue to blow on the human body, causing discomfort to the user, so it cannot be used normally. In addition, because the backpack LED billboard is usually thin for portability, the solution of simply top intake and bottom exhaust cannot guarantee sufficient heat dissipation efficiency. It is necessary to provide a structure for heat dissipation of the backpack LED billboard. Utility Model Content

[0006] The technical problem to be solved by the embodiments of the present application is to improve the heat dissipation effect of the LED billboard in the backpack state.

[0007] In order to solve the above technical problems, the embodiment of the present application provides a backpack LED billboard heat dissipation structure, which adopts the following technical solutions:

[0008] A backpack LED billboard heat dissipation structure includes a housing, an LED screen, a battery, a convection component, a screen heat dissipation component, and a battery heat dissipation component;

[0009] The LED screen is arranged on the front side of the housing, with one side of the LED screen facing outwards and the other side facing the interior of the housing;

[0010] The battery is installed on the rear side of the housing, and the battery is arranged inside the housing, and the horizontal position of the battery arrangement is lower than the LED screen;

[0011] The wind path formed by the convection assembly penetrates the housing in the vertical direction;

[0012] The air paths formed by the screen heat dissipation component and the battery heat dissipation component respectively penetrate the shell in the horizontal direction; and the air path of the screen heat dissipation component is higher than the air path of the battery heat dissipation component;

[0013] The convection assembly includes an exhaust fan, which is arranged on the top of the shell and connects the inside of the shell with the outside; the convection assembly also includes a plurality of through holes arranged at the bottom of the shell; the through holes are opposite to the position of the exhaust fan;

[0014] The screen heat dissipation component includes a first air inlet fan, a first heat spreader and a first air exhaust fan, wherein the first air inlet fan and the first air exhaust fan are respectively arranged on two side walls of the shell, and the first air inlet fan and the first air exhaust fan are located opposite to each other; the first heat spreader is attached to the LED screen inside the shell, and the first heat spreader is arranged on the wind path between the first air inlet fan and the first air exhaust fan;

[0015] The battery heat dissipation assembly includes a second air inlet fan, a second heat spreader and a second air exhaust fan, wherein the second air inlet fan and the second air exhaust fan are respectively arranged on the two side walls of the shell, and the second air inlet fan and the second air exhaust fan are positioned opposite to each other; the second heat spreader is attached to the battery inside the shell, and the second heat spreader is arranged on the air path between the second air inlet fan and the first exhaust fan.

[0016] Furthermore, the housing is provided with a first recess and a second recess; the first recess is provided on the outside of the first exhaust fan; the second recess is provided on the outside of the second exhaust fan;

[0017] One end of the first vapor chamber penetrates through the side wall of the housing and extends to the first recess;

[0018] One end of the second vapor chamber penetrates through the side wall of the shell and extends to the second recess.

[0019] Furthermore, at least one fin is installed at one end of the first heat spreader extending to the first recessed position, and the fin extends along the wind path direction of the screen heat dissipation assembly.

[0020] Furthermore, the wind path formed by the first air inlet fan and the first exhaust fan is arranged at the front end of the shell; the wind path formed by the second air inlet fan and the second exhaust fan is arranged at the rear end of the shell; the wind path between the exhaust fan and the through hole is arranged in the middle section of the shell.

[0021] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects: this solution, by staggeredly arranging the battery and the LED screen and correspondingly setting shorter wind paths in the shell, allows the battery and the LED to dissipate heat separately through specific wind paths, and in the longer direction in the shell, a convection component is arranged to help air flow, reduce the air pressure in the box, and improve the heat dissipation effect of the battery and the LED. Based on the heat dissipation solution, the air flow rate is fast, the air volume is large, and the heat is dispersed, thereby improving the overall heat dissipation efficiency of the LED billboard in the back-carrying state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of a heat dissipation structure of a backpack LED billboard according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0025] Figure 3 A schematic diagram of another embodiment of a heat dissipation structure for a backpack LED billboard

[0026] Reference numerals:

[0027] 100 - housing, 101 - recess, 200 - LED screen, 300 - battery, 401 - exhaust fan, 501 - first air inlet fan, 502 - first air exhaust fan, 503 - first heat spreader, 601 - second air inlet fan, 602 - second air exhaust fan, 603 - second heat spreader. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0031] refer to Figures 1 to 3 ,in Figure 1 and Figure 2 It is an embodiment of the utility model; Figure 1 is a front view of the backpack LED billboard in this embodiment;

[0032] Figure 3 It is another embodiment of the present invention and is a side view of a backpack LED billboard.

[0033] It should be noted that a backpack-type LED billboard is a type of portable billboard, which is usually equipped with components for carrying and holding. This attached figure omits the handle that can be installed on the LED billboard and the strap buckle for binding the strap in order to clearly show the structure for heat dissipation.

[0034] The heat dissipation structure of the backpack LED billboard includes a housing 100, an LED screen 200, a battery 300, a convection component, a screen heat dissipation component and a battery heat dissipation component;

[0035] The backpack LED billboard is a box structure. To expand the display area and facilitate display, it is set to a shape with a high vertical height, a horizontal width corresponding to the human body, and a thickness as thin as possible. The LED screen 200 is embedded in the housing 100 for external display, and is connected to the control module and the power supply set inside the housing 100 through a circuit. To ensure portability, the power supply is installed in the form of a battery 300. In the embodiment, the battery 300 usually uses a lithium battery pack with fast charging and high power.

[0036] The LED screen 200 is disposed on the front side of the housing 100 , with one side of the LED screen 200 facing outwards and the other side facing the interior of the housing 100 ;

[0037] The LED screen 200 is composed of a matrix composed of a large number of LED light-emitting modules. The size of the LED screen 200 is relatively large relative to the entire shell 100, and usually occupies an entire surface of the shell 100. During the operation of the LED light-emitting modules, heat is generated and usually accumulates in the middle of the screen where the heat is not easy to dissipate; the upper part of the screen where heat is naturally easy to accumulate due to the rise of hot air; and near the exhaust vents for heat dissipation.

[0038] The side of the LED screen 200 that is displayed to the outside can usually dissipate heat normally due to air circulation. The heat generated by the side of the LED screen 200 that faces the inside of the shell 100 needs to be discharged from the shell 100.

[0039] The battery 300 is installed on the rear side of the housing 100, and the battery 300 is arranged inside the housing 100, and the horizontal position of the battery 300 is lower than the LED screen 200;

[0040] The battery 300 is another common heat source. In order to avoid the LED screen 200, the position of the battery 300 is set lower than the LED screen 200. The horizontal position of the battery 300 described in the present application is lower than the LED screen 200. The battery 300 is set as low as possible within the range of the shell 100 to avoid the battery 300 and the LED screen 200 being too concentrated, and the heat generated cannot be dissipated and causes accumulation, which makes heat dissipation difficult. In the actual implementation process, the height of the LED screen 200 is similar to the overall height of the shell 100, and the battery 300 itself also has a certain height. Therefore, at least part of the height of the battery 300 is set lower than the screen, and the height of the top of the battery 300 is equivalent to the lower part of the LED screen 200. The heat at the lower part of the LED is relatively low, so this setting can avoid the heat accumulation of the LED screen 200 and the battery 300.

[0041] The wind path formed by the convection assembly penetrates the housing 100 in the vertical direction;

[0042] The heat dissipation solution recorded in this application is based on air cooling, and therefore requires an environment with air flow. For the application scenario of this application, the shell 100 of the LED billboard is tall and thin, which is not conducive to air circulation. Based on the natural flow direction of hot air and cold air, a convection component is provided to form an air path, which helps to discharge hot air smoothly from the top of the shell 100 in the vertical direction.

[0043] The air paths formed by the screen heat dissipation component and the battery heat dissipation component respectively penetrate the housing 100 in the horizontal direction; and the air path of the screen heat dissipation component is higher than the air path of the battery heat dissipation component;

[0044] The convection assembly includes an exhaust fan 401, which is arranged on the top of the housing 100 and connects the inside of the housing 100 with the outside; the convection assembly also includes a plurality of through holes arranged on the bottom of the housing 100; the through holes are opposite to the position of the exhaust fan 401;

[0045] Based on the fact that hot air rises and cold air falls, the exhaust fan 401 is provided to create an upward airflow, thereby making the air inside the housing 100 move.

[0046] When the convection component helps to generate air flow inside the shell 100, the wind path set in the horizontal direction by the screen heat dissipation component takes away the heat of the LED screen 200; the wind path set in the horizontal direction by the battery heat dissipation component takes away the heat of the battery 300. The width of the shell 100 is significantly lower than the height. The screen heat dissipation component and the battery heat dissipation component work on the short side of the shell and can take away heat more efficiently. The screen heat dissipation component and the battery heat dissipation component take away heat at different heights respectively, so that the heat of the screen and the heat of the battery 300 are taken away respectively, preventing the heat generated by the screen and the heat generated by the battery 300 from accumulating, thereby improving the heat dissipation efficiency.

[0047] The screen heat dissipation component includes a first air inlet fan 501, a first heat spreader 503 and a first air exhaust fan 502, wherein the first air inlet fan 501 and the first air exhaust fan 502 are respectively arranged on two side walls of the housing 100, and the first air inlet fan 501 and the first air exhaust fan 502 are located opposite to each other; the first heat spreader 503 is attached to the LED screen 200 inside the housing 100, and the first heat spreader 503 is arranged on the wind path between the first air inlet fan 501 and the first air exhaust fan 502;

[0048] The battery heat dissipation assembly includes a second air inlet fan 601, a second heat spreader 603 and a second air exhaust fan 602, wherein the second air inlet fan 601 and the second air exhaust fan 602 are respectively arranged on the two side walls of the shell 100, and the second air inlet fan 601 and the second air exhaust fan 602 are positioned opposite to each other; the second heat spreader 603 is attached to the battery 300 inside the shell 100, and the second heat spreader 603 is arranged in the wind path between the second air inlet fan 601 and the first air exhaust fan 502.

[0049] The function of the convection component is mainly to provide air circulation. The air path of the convection component and the air paths of the screen heat exhaust component and the battery heat exhaust component intersect with each other, giving priority to the heat exhaust work of the convection component and the heat exhaust component. Therefore, the power of the first air inlet fan 501, the first air exhaust fan 502, the second air inlet fan 601, and the second air exhaust fan 602 is significantly greater than the power of the exhaust fan 401.

[0050] The LED screen 200 and the battery 300, especially the lithium battery pack, are relatively large in size, and the air path inevitably completely covers the area where the LED screen 200 and the battery 300 are located. By providing a first heat spreader 503 and a second heat spreader 603, heat accumulation in individual components of the battery 300 and the LED screen 200 can be avoided, thereby improving the heat dissipation efficiency.

[0051] This solution, by staggeredly arranging the battery 300 and the LED screen 200 and correspondingly setting shorter wind paths in the shell 100, allows the battery 300 and the LED to dissipate heat separately through specific wind paths, and sets a convection component in the longer direction of the shell 100 to help air flow, reduce the air pressure in the box, and improve the heat dissipation effect of the battery 300 and the LED. Based on the heat dissipation solution, the air flow rate is fast, the air volume is large, the heat is dispersed, and the heat dissipation efficiency is high when carried on the back.

[0052] Furthermore, the housing 100 is provided with a first recess 101 and a second recess 101; the first recess 101 is provided outside the first exhaust fan; the second recess 101 is provided outside the second exhaust fan;

[0053] One end of the first heat sink 503 passes through the side wall of the housing 100 and extends to the first recess 101;

[0054] One end of the second vapor chamber 603 passes through the side wall of the housing 100 and extends to the second recess 101 .

[0055] By setting the concave position 101, and by extending the first heat spreader 503 to the first concave position 101 and the second heat spreader 603 to the second concave position 101, the first heat spreader 503 and the second heat spreader 603 are extended to the outside, and the first heat spreader 503 and the second heat spreader 603 have a better heat dissipation effect through air cooling in an open environment, thereby improving the heat dissipation efficiency of the battery 300 and the LED screen 200. When the air path provided by the convection component disrupts the air path between the first air inlet fan 501 and the first exhaust fan 502, or the air path between the second exhaust fan 602 and the second air inlet fan 601, and affects the heat dissipation effect of the battery heat exhaust component and the battery heat exhaust component, cold air is supplemented to assist the LED screen 200 and the battery 300 in heat dissipation.

[0056] Furthermore, at least one fin is installed at one end of the first heat spreader 503 extending to the first recess 101, and the fin extends along the wind path direction of the screen heat dissipation component.

[0057] This solution expands the heat exchange area of ​​the heat sink in an open environment to improve the heat dissipation effect.

[0058] The wind path formed by the first air inlet fan 501 and the first exhaust fan 502 is arranged at the front end of the shell 100; the wind path formed by the second air inlet fan 601 and the second exhaust fan 602 is arranged at the rear end of the shell 100; the wind path between the exhaust fan 401 and the through hole is arranged in the middle section of the shell 100.

[0059] The front end of the shell is close to the front side, close to the LED screen, and the rear end of the shell is close to the rear side, close to the battery.

[0060] This solution reduces the crosstalk between air paths, making the air paths of the battery heat dissipation component and the screen heat dissipation component smoother, preventing heat from accumulating on the first heat spreader 503 and the second heat spreader 603, and transferring the heat to a position that is not easy to dissipate heat. This solution improves the reliability of heat dissipation.

[0061] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. Backpack LED billboard heat dissipation structure, characterized by: It includes a housing, an LED screen, a battery, a convection component, a screen heat dissipation component and a battery heat dissipation component; The LED screen is arranged on the front side of the housing, with one side of the LED screen facing outwards and the other side facing the interior of the housing; The battery is installed on the rear side of the housing, and the battery is arranged inside the housing, and the horizontal position of the battery arrangement is lower than the LED screen; The wind path formed by the convection assembly penetrates the housing in the vertical direction; The air paths formed by the screen heat dissipation component and the battery heat dissipation component respectively penetrate the shell in the horizontal direction; and the air path of the screen heat dissipation component is higher than the air path of the battery heat dissipation component; The convection assembly includes an exhaust fan, which is arranged on the top of the shell and connects the inside of the shell with the outside; the convection assembly also includes a plurality of through holes arranged at the bottom of the shell; the through holes are opposite to the position of the exhaust fan; The screen heat dissipation assembly includes a first air inlet fan, a first heat spreader and a first air exhaust fan, wherein the first air inlet fan and the first air exhaust fan are respectively arranged on two side walls of the housing, and the first air inlet fan and the first air exhaust fan are located opposite to each other; The first heat spreader is attached to the LED screen inside the housing, and the first heat spreader is arranged on the wind path between the first air inlet fan and the first air exhaust fan; The battery heat dissipation assembly includes a second air inlet fan, a second heat spreader, and a second air exhaust fan, wherein the second air inlet fan and the second air exhaust fan are respectively arranged on two side walls of the housing, and the second air inlet fan and the second air exhaust fan are opposite to each other; The second heat spreader is attached to the battery inside the shell, and the second heat spreader is arranged on the wind path between the second air inlet fan and the first air exhaust fan.

2. The heat dissipation structure of a backpack LED billboard according to claim 1, characterized in that: The housing is provided with a first recess and a second recess; the first recess is provided on the outside of the first exhaust fan; the second recess is provided on the outside of the second exhaust fan; One end of the first vapor chamber penetrates through the side wall of the housing and extends to the first recess; One end of the second vapor chamber penetrates through the side wall of the shell and extends to the second recess.

3. The heat dissipation structure of a backpack LED billboard according to claim 1, characterized in that: At least one fin is installed at one end of the first heat spreader extending to the first recessed position, and the fin extends along the wind path direction of the screen heat dissipation component.

4. The heat dissipation structure of a backpack LED billboard according to claim 1, characterized in that: The wind path formed by the first air inlet fan and the first air exhaust fan is arranged at the front end of the shell; the wind path formed by the second air inlet fan and the second air exhaust fan is arranged at the rear end of the shell; the wind path between the exhaust fan and the through hole is arranged in the middle section of the shell.

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