Condensation-proof low-temperature backlight module

Abstract

The utility model relates to a kind of low-temperature backlight module of anti-condensation, exhaust pump is fixedly installed in backplate body side top end, connecting pipe is movably arranged in both ends of backplate body side, and the number of connecting pipe is several groups, sliding mechanism is set in both ends of backplate body side, and sliding mechanism is connected with connecting pipe, abutting stop mechanism is set in the outside of sliding mechanism, communication mechanism is set in both ends of backplate body side, air blowing heat dissipation mechanism is set between every two groups of connecting pipe side edge, sliding mechanism includes mounting plate, mounting plate is slidably installed in the surface of both ends of backplate body outside, the utility model can guarantee that low-temperature gas is sucked and discharged by exhaust pump operation, under the premise that exhaust pipe position changes, still can keep normal communication transport, and then different positions of heat source on the surface of backplate body can be concentrated fixed-point heat dissipation treatment, prevent the condensate of backplate body surface and external environment temperature difference is larger and leads to gathering.

Description

Technical Field

[0001] This utility model relates to the field of display technology, specifically to a low-temperature backlight module that prevents condensation. Background Technology

[0002] Backlight modules are a key component of liquid crystal display (LCD) devices. By providing a uniform and high-brightness light source to the LCD panel, they ensure clear display of content in various environments. Backlight modules are divided into two types: edge-lit and direct-lit. The former is thinner and more energy-efficient, suitable for mobile phones and laptops; the latter offers higher brightness and better uniformity, and is mostly used in televisions and monitors. With technological advancements, backlight modules are evolving towards thinner designs, high dynamic range (HDR), and local dimming (Mini-LED), continuously optimizing display effects and energy efficiency.

[0003] In actual use cases of backlight modules, when in low-temperature environments and needing to meet specific display requirements, the multiple LED strips typically configured on the front of the module will enter a prolonged luminous state. During this process, the heat generated by the LED strips will continuously be conducted to and accumulate on the back of the module. The significant temperature difference between the external low-temperature environment and the high-temperature area on the back of the module causes water vapor in the air to condense on the back of the module, gradually forming condensate and accumulating continuously. Excessive accumulation of condensate can cause multiple hazards to the backlight module: on the one hand, moisture may seep into the module, corroding metal components or causing short circuits; on the other hand, the light source layout and hotspot positions of different types of backlight modules vary, resulting in uneven distribution of condensate on the back of the module. This non-uniform condensation phenomenon makes it difficult for traditional dehumidification methods to accurately cover all hotspot areas, thus failing to remove accumulated moisture in time. Ultimately, this may lead to abnormal module display, reduced lifespan, or even permanent damage, seriously affecting the reliability and stability of the device in low-temperature environments. Therefore, new technical solutions need to be designed to address this issue. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, adapt to practical needs, and provide a low-temperature backlight module that prevents condensation. This addresses the problem that when a backlight module is in a low-temperature environment and needs to meet specific display requirements, the multiple LED strips typically configured on the front of the module will enter a prolonged luminous state. During this process, the heat generated by the LED strips will continuously conduct to and accumulate on the back of the module. The significant temperature difference between the external low-temperature environment and the high-temperature area on the back of the module causes water vapor in the air to condense on the back of the module, gradually forming condensate that continues to accumulate. Excessive accumulation of condensate can cause multiple hazards to the backlight module: firstly, moisture may seep into the module, corroding metal components or causing short circuits; secondly, the different light source layouts and hotspot positions of different types of backlight modules result in uneven distribution of condensate on the back of the module. This uneven condensation phenomenon makes it difficult for traditional dehumidification methods to accurately cover all hotspot areas, thus failing to remove accumulated moisture in time. Ultimately, this may lead to abnormal module display, reduced lifespan, or even permanent damage, seriously affecting the reliability and stability of the device in low-temperature environments.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a low-temperature backlight module with anti-condensation is designed, an exhaust pump is fixedly installed on the top side of the back plate body, and connecting pipes are movably arranged at both ends of the side of the back plate body, and the number of connecting pipes is several sets. The back plate body is provided with sliding mechanisms at both ends of its side, and the sliding mechanisms are connected to the connecting pipes. A clamping and limiting mechanism is provided on the outside of the sliding mechanisms. Both ends of the backplate body are provided with a connecting mechanism, and an air blowing heat dissipation mechanism is provided between the sides of every two sets of connecting pipes.

[0006] Preferably, the sliding mechanism includes mounting plates, and mounting plates are slidably mounted on both ends of the outer side of the back plate body. The mounting plates are located outside the connecting pipe. A fixing block is fixedly mounted on the middle of the side of each mounting plate. A fixing ring is fixedly mounted on the top of each fixing block, and the connecting pipe is fixedly sleeved on the inner wall of the fixing ring.

[0007] Preferably, the connecting mechanism includes a first corrugated hose and a second corrugated hose, both ends of the exhaust pump are fixedly connected to an air supply bend, the first corrugated hose is fixedly connected between the side end of the air supply bend and the side end of the connecting pipe, and the second corrugated hose is vertically fixedly connected between every two sets of the side ends of the connecting pipe.

[0008] Preferably, the air-blowing heat dissipation mechanism includes an exhaust pipe, and an exhaust pipe is horizontally fixedly connected between the sides of each pair of connecting pipes, and the exhaust pipe is movably disposed on the outside of the back plate body.

[0009] Preferably, each of the exhaust pipes has an exhaust hole on the side near the back plate body.

[0010] Preferably, the clamping and limiting mechanism includes an adjusting bolt and a friction plate. A sliding plate is fixedly installed on the middle of the side of each mounting plate, and the bottom surface of the sliding plate slides against the side of the back plate body. An adjusting bolt is screwed through the middle of each sliding plate by a thread.

[0011] Preferably, a friction plate is fixedly sleeved at the bottom end of each adjusting bolt, and a limit groove is opened inside both ends of the side of the back plate body.

[0012] Preferably, the bottom surface of the friction plate is slidably installed inside the limiting groove, and the bottom end of the adjusting bolt is slidably inserted into the limiting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model features an exhaust pump installed on the rear side of the back panel body. Multiple exhaust pipes are arranged on the rear side of the back panel body via connecting pipes and air supply bends. During continuous operation of the exhaust pump, low-temperature air from the external environment is drawn in and pressurized. Through the connection of the air supply bends, connecting pipes, and exhaust pipes, the low-temperature gas is delivered to the rear side of the back panel body via exhaust holes, dissipating heat from the concentrated heat source on the rear side and preventing condensation from forming on the high temperature of the back panel body's side surface. Simultaneously, by connecting the connecting pipes and air supply bends with the first and second corrugated hoses, and by connecting the connecting pipes to the... After the mounting plate is connected to the transmission, when the heat source concentration point of the back plate body changes, the operator can push the mounting plate to make it slide the connecting pipe and exhaust pipe on the rear side of the back plate body. While adjusting the blowing and heat dissipation position of the exhaust pipe and exhaust hole, the extension characteristics of the first and second corrugated hoses can ensure that the exhaust pump operates to draw and discharge low-temperature gas. Under the premise that the position of the exhaust pipe changes, normal connection and delivery can still be maintained. In this way, the heat source at different positions on the surface of the back plate body can be concentrated and fixed-point heat dissipation treatment, preventing the accumulation of condensate due to the large temperature difference between the surface of the back plate body and the external environment.

[0014] 2. This utility model features a sliding plate on the outer side of the mounting plate and a screw-on adjusting bolt on the side of the sliding plate. A friction plate located at the bottom of the adjusting bolt is slidably positioned inside a limiting groove. With the guiding effect of the limiting groove on the adjusting bolt and the friction plate, the connecting pipe and the exhaust pipe can only move horizontally on the rear side of the back plate body, without any tilting during movement that would affect the air blowing and heat dissipation quality. At the same time, the vertical position of the friction plate inside the limiting groove can be adjusted by the screwing action of the adjusting bolt, thereby limiting the position of the mounting plate and ensuring the stability of the connection between the connecting plate and the exhaust pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall rear front view of the present invention; Figure 2 This is a schematic diagram of the overall rear side view structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of the exhaust pipe of this utility model; Figure 4 This is a side view sectional view of the exhaust pipe structure of this utility model; In the diagram: 1. Backplate body; 11. Exhaust pump; 2. Mounting plate; 21. Fixing block; 22. Fixing ring; 23. Connecting pipe; 24. Exhaust pipe; 25. Air supply bend; 26. First corrugated hose; 27. Second corrugated hose; 3. Sliding plate; 31. Adjusting bolt; 32. Limiting groove; 33. Friction plate; 4. Exhaust port. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A low-temperature backlight module with anti-condensation, see [link / reference] Figures 1 to 4 The front side of the back panel body 1 is provided with a light guide plate, LED light strip, reflector, diffuser film and brightness enhancement film. The light emitted by the LED light strip is refracted by the light guide plate and recovered by the reflector, and then evenly scattered by the diffuser film. Finally, the brightness and contrast are enhanced by the brightness enhancement film, thereby realizing display processing. An exhaust pump 11 is fixedly installed at the top side of the back panel body 1. Under the operation of the exhaust pump 11, the low temperature air in the external environment can be extracted, pressurized and delivered to the back side of the back panel body 1 to dissipate heat from the concentrated heat source on the back side, thereby avoiding the high temperature of the back panel body side and the generation of condensation. Connecting pipes 23 are movably provided at both ends of the side of the back panel body 1, and there are several sets of connecting pipes 23.

[0017] For details, see Figures 1 to 4The backplate body 1 has a connecting mechanism at both ends of its side. A blowing heat dissipation mechanism is provided between the sides of every two sets of connecting pipes 23. The connecting mechanism includes a first corrugated hose 26 and a second corrugated hose 27. The exhaust pump 11 has an air supply bend 25 fixedly connected to both ends of its side. The first corrugated hose 26 is fixedly connected between the side end of the air supply bend 25 and the side end of the connecting pipe 23. The second corrugated hose 27 is fixedly connected vertically between the side ends of every two sets of connecting pipes 23. The blowing heat dissipation mechanism includes an exhaust pipe 24. An exhaust pipe 24 is fixedly connected laterally between the sides of every two sets of connecting pipes 23. The exhaust pipe 24 is movably disposed on the outside of the backplate body 1. Each exhaust pipe 24 has an exhaust hole 4 on the side near the backplate body 1.

[0018] In actual low-temperature applications, when the backlight module needs to meet specific display requirements, the multiple LED strips configured on the front will enter a long-term luminous state. The heat generated by the LED strips will be continuously conducted to and accumulated on the back of the module backplate 1. A significant temperature difference will be formed between the external low-temperature environment and the high-temperature area on the back of the backplate 1. At this time, the exhaust pump 11 will start to operate, drawing and pressurizing the low-temperature air from the external environment. The air supply bend 25, which is fixedly connected to both ends of the side of the exhaust pump 11, is fixedly connected to the side of the connecting pipe 23 through the first corrugated hose 26 in the connecting mechanism. This allows the pressurized low-temperature air to enter the system through the air supply bend 25 and the first corrugated hose 26 in sequence. The connecting pipe 23 is connected to the side of each pair of connecting pipes 23 by a second corrugated hose 27 that is vertically fixed and connected. The side of each pair of connecting pipes 23 is also horizontally fixed and connected by an exhaust pipe 24. The exhaust pipe 24 is movably set on the outside of the back plate body 1 and has an exhaust hole 4 on the side close to the back plate body 1. Low-temperature air enters the exhaust pipe 24 through the connecting pipe 23 and is finally delivered to the back side of the back plate body 1 through the exhaust hole 4. This dissipates heat from the concentrated heat source on the back side, effectively reducing the temperature of the back side of the back plate body 1 and preventing it from forming an excessive temperature difference with the external low-temperature environment. This prevents water vapor in the air from condensing and producing condensate.

[0019] Further, see Figures 1 to 4 The back plate body 1 has sliding mechanisms at both ends of its side, and the sliding mechanisms are connected to the connecting pipe 23. The sliding mechanism includes a mounting plate 2. The mounting plates 2 are slidably mounted on both ends of the outer side surface of the back plate body 1, and the mounting plates 2 are located outside the connecting pipe 23. A fixing block 21 is fixedly mounted in the middle of the side of each mounting plate 2. A fixing ring 22 is fixedly mounted on the top of each fixing block 21, and the connecting pipe 23 is fixedly sleeved on the inner wall of the fixing ring 22.

[0020] When the heat source concentration point of the backplate body 1 changes due to factors such as changes in the working state of the light strip, the mounting plate 2 in the sliding mechanism is slidably installed on the outer end surfaces of the backplate body 1 and located outside the connecting pipe 23. The top of the fixing block 21 fixedly installed in the middle of the side of each mounting plate 2 has a fixing ring 22 fixedly installed. The connecting pipe 23 is fixedly sleeved on the inner wall of the fixing ring 22. The operator can push the mounting plate 2, which drives the fixing block 21, the fixing ring 22, and then the connecting pipe 23 to slide on the rear side of the backplate body 1. The connecting pipe 23 then drives the exhaust pipe 24 connected to it to move synchronously, thereby adjusting the position of the exhaust pipe 24 and the exhaust hole 4 for air blowing and heat dissipation. During this process, the first corrugated hose 26 and the second corrugated hose 27 of the connecting mechanism, due to their own extension characteristics, can ensure that the low-temperature gas drawn and discharged by the exhaust pump 11 is normally connected and transported even if the position of the connecting pipe 23 and the exhaust pipe 24 changes, thus ensuring that the heat dissipation process is not interrupted.

[0021] It is worth noting that, see Figures 1 to 4 The sliding mechanism is provided with a clamping and limiting mechanism on its outer side. The clamping and limiting mechanism includes an adjusting bolt 31 and a friction plate 33. A sliding plate 3 is fixedly installed in the middle of the side of each mounting plate 2, and the bottom surface of the sliding plate 3 slides against the side of the back plate body 1. An adjusting bolt 31 is screwed through the middle of each sliding plate 3 by a thread. A friction plate 33 is fixedly sleeved at the bottom end of each adjusting bolt 31. A limiting groove 32 is opened in the inner side of both ends of the back plate body 1. The bottom surface of the friction plate 33 is slidably installed in the limiting groove 32. The bottom end of the adjusting bolt 31 is slidably inserted into the limiting groove 32.

[0022] The limiting groove 32 guides the adjusting bolt 31 and the friction plate 33, ensuring that the connecting pipe 23 and the exhaust pipe 24 can only move horizontally on the rear side of the back plate body 1. This prevents them from tilting arbitrarily during movement, which would affect the quality of air blowing and heat dissipation. After the exhaust pipe 24 and the connecting pipe 23 are adjusted to a suitable heat dissipation position, the operator turns the adjusting bolt 31. The adjusting bolt 31, through its threaded engagement with the sliding plate 3, drives the friction plate 33 at the bottom to move vertically inside the limiting groove 32 until the friction plate 33 is tightly fitted against the inner wall of the limiting groove 32, thus providing a restraining and limiting effect on the mounting plate 2. This ensures the positional stability of the connecting pipe 23 and the exhaust pipe 24 during subsequent use, thereby ensuring the concentrated and targeted heat dissipation effect on heat sources at different locations on the surface of the back panel body 1, continuously preventing the accumulation of condensate, ensuring the reliability and stability of the backlight module in low-temperature environments, and avoiding problems such as condensate seeping into the module and corroding metal components, causing short circuits, or causing abnormal module display, lifespan reduction, or even permanent damage. At the same time, it adapts to the differences in light source layout and hot spot positions of different types of backlight modules, achieving precise coverage of heat dissipation and dehumidification of all hot spot areas.

[0023] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0024] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A low-temperature backlight module with anti-condensation feature, comprising a backplate body (1), characterized in that, An exhaust pump (11) is fixedly installed on the top side of the back plate body (1), and connecting pipes (23) are movably provided at both ends of the side of the back plate body (1), and the number of connecting pipes (23) is several sets. The back plate body (1) has sliding mechanisms at both ends of its side, and the sliding mechanisms are connected to the connecting pipe (23). A clamping and limiting mechanism is provided on the outside of the sliding mechanism. The backplate body (1) has a communication mechanism at both ends of its side, and a blowing heat dissipation mechanism is provided between the sides of each pair of connecting pipes (23).

2. The anti-condensation low-temperature backlight module as described in claim 1, characterized in that, The sliding mechanism includes a mounting plate (2). The mounting plate (2) is slidably mounted on both ends of the outer side surface of the back plate body (1). The mounting plate (2) is located outside the connecting pipe (23). A fixing block (21) is fixedly mounted on the middle side of each mounting plate (2). A fixing ring (22) is fixedly mounted on the top of each fixing block (21). The connecting pipe (23) is fixedly sleeved on the inner wall of the fixing ring (22).

3. The anti-condensation low-temperature backlight module as described in claim 1, characterized in that, The connecting mechanism includes a first corrugated hose (26) and a second corrugated hose (27). Both ends of the exhaust pump (11) are fixedly connected to an air supply bend (25). The first corrugated hose (26) is fixedly connected between the side end of the air supply bend (25) and the side end of the connecting pipe (23). The second corrugated hose (27) is vertically fixedly connected between the side ends of every two sets of the connecting pipes (23).

4. The anti-condensation low-temperature backlight module as described in claim 1, characterized in that, The air blowing heat dissipation mechanism includes an exhaust pipe (24), and an exhaust pipe (24) is horizontally fixedly connected between the sides of each pair of connecting pipes (23), and the exhaust pipe (24) is movably disposed on the outside of the back plate body (1).

5. The anti-condensation low-temperature backlight module as described in claim 4, characterized in that, Each of the exhaust pipes (24) has an exhaust hole (4) on the side near the back plate body (1).

6. The anti-condensation low-temperature backlight module as described in claim 2, characterized in that, The clamping and limiting mechanism includes an adjusting bolt (31) and a friction plate (33). A sliding plate (3) is fixedly installed in the middle of the side of each mounting plate (2), and the bottom surface of the sliding plate (3) slides against the side of the back plate body (1). An adjusting bolt (31) is screwed through the middle of each sliding plate (3) by thread.

7. The anti-condensation low-temperature backlight module as described in claim 6, characterized in that, Each adjusting bolt (31) has a friction plate (33) fixedly sleeved at its bottom end, and the back plate body (1) has a limit groove (32) inside both ends of its side.

8. The anti-condensation low-temperature backlight module as described in claim 7, characterized in that, The friction plate (33) is slidably installed inside the limiting groove (32) on its bottom surface, and the bottom end of the adjusting bolt (31) is slidably inserted into the limiting groove (32).

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