Digital television shell with heat dissipation and noise reduction cooperation function

Abstract

The invention discloses a digital television shell with a heat dissipation and noise reduction cooperation function, and relates to the technical field of digital televisions, the digital television shell comprises a part of a shell, a display screen and an auxiliary rear plate on the part of the shell, and the part of the shell and the auxiliary rear plate jointly form a television shell; the first assembly is arranged in the machine shell; through the design of the memory alloy, expansion can be automatically started in a high-temperature state, and an air flow opening between the shell and the outside is accurately expanded; compared with a traditional heat dissipation fan with fixed heat dissipation holes or continuous operation, the characteristic of starting on demand can rapidly improve air convection efficiency and accelerate internal heat discharge when heat is concentrated, and device overheating and performance frequency reduction caused by heat dissipation lag are avoided, such as chip jamming and picture frame dropping. And meanwhile, the response does not need to be driven by an additional motor or a control system, so that the energy consumption is reduced, the fault risk generated by an active driving component is avoided, and the heat dissipation process is more efficient and stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital television, in particular to a digital television shell with heat dissipation and noise reduction synergistic functions. BACKGROUND

[0002] With the continuous iteration of display technology, televisions are rapidly developing towards thinness, high definition and intelligence. The power density of the integrated chips, backlight modules, power modules and other electronic devices in the television continues to increase, and the heat generated during operation significantly increases. In order to ensure the stable operation and service life of the television, effective heat dissipation design becomes a key link.

[0003] At present, the mainstream heat dissipation schemes mainly include active heat dissipation and passive heat dissipation. The active heat dissipation takes a heat dissipation fan as the core and removes the internal heat through forced air convection. However, when the heat dissipation fan operates at high speed, the friction between the fan blades and the air and the mechanical vibration of the bearing will produce continuous "humming sound", which will obviously affect the user experience in the low volume viewing or mute scene. Meanwhile, the long-term use of the heat dissipation fan also has problems such as dust accumulation on the blades and bearing wear, which not only leads to a decrease in heat dissipation efficiency, but also causes abnormal sound, jamming and other faults, thereby increasing the maintenance cost. The passive heat dissipation mainly relies on the heat dissipation holes opened on the television shell to realize heat exchange through natural convection. However, the existence of the heat dissipation holes allows dust, fluff, moisture and other impurities in the external environment to easily enter the television. After the above impurities adhere to the surface of the electronic devices, a heat insulation layer is formed, which hinders heat dissipation and causes local temperature rise. More seriously, the combination of dust and moisture easily causes problems such as circuit short circuit and metal contact oxidation, which causes picture flicker, signal distortion and even directly leads to device burnout, thereby greatly shortening the service life of the television. In addition, the use scenarios of modern televisions are increasingly diversified, and users have increasingly high requirements for the quietness and reliability of the equipment. For example, in the home theater, bedroom and other scenarios, low-noise operation becomes a basic requirement. In dusty and humid environments, the anti-pollution and moisture-proof ability of the equipment directly affects its stability. The problems that "heat dissipation and noise reduction are difficult to be considered together" and "heat dissipation and dust prevention are contradictory" in the traditional heat dissipation scheme are increasingly prominent, which has become an important bottleneck restricting the performance upgrade and user experience improvement of the television.

[0004] Therefore, it is a technical problem to be solved in the current television structure design field to develop a television shell capable of realizing the synergistic effect of heat dissipation and noise reduction, effectively removing the internal heat and effectively suppressing the generation of noise and blocking the invasion of external impurities.

[0005] Therefore, the present application provides a digital television shell with heat dissipation and noise reduction synergistic functions to solve the above problems. SUMMARY

[0006] Therefore, the present application provides a digital television shell with heat dissipation and noise reduction collaborative functions to solve the problems in the prior art.

[0007] To achieve the above object, the present application provides the following technical scheme: a digital television shell with heat dissipation and noise reduction collaborative functions, comprising: a partial shell, a display screen, and an auxiliary back plate on the partial shell, wherein the partial shell and the auxiliary back plate together form a television shell; and a first component arranged inside the shell. The first component comprises a clamping cover fixedly connected to the auxiliary back plate, wherein the auxiliary back plate separates the display screen and the clamping cover to form a hot zone I and a hot zone II, the side wall of the clamping cover is provided with a lateral hole at equal intervals, and the top of the clamping cover is provided with a top hole at equal intervals. A bellows tape is fixedly connected to the inner wall of the partial shell at the position of the lateral hole, and one end of the bellows tape away from the inner wall of the partial shell is fixedly connected with an air flow pipe. Symmetrical support plates are fixedly connected to the inner wall of the partial shell at the position of the lateral hole, a drive shaft is fixedly connected to the support plates, and the drive shaft is fixedly connected with the side wall of the air flow pipe. An air filter is fixedly connected to the end of the air flow pipe, and the air filter is composed of a frame plate and a pull-out filter screen. Silica gel sealing pieces are fixedly connected to the air flow pipe, L-shaped frames are fixedly connected to the wall surface of the air flow pipe, and memory alloys are fixedly connected to the L-shaped frames.

[0008] As an improvement, a second component fixedly connected to the shell is further included. The second component comprises a liquid cooling channel arranged on the auxiliary back plate, and a heat conduction block fixedly connected to the auxiliary back plate at equal intervals, wherein one end of the heat conduction block is located in the hot zone I where electronic devices are arranged, and the other end is located in the hot zone II. A sliding groove is arranged on one end face of the heat conduction block located in the hot zone I, and a multi-frame is fixedly connected to one end face of the heat conduction block located in the hot zone II.

[0009] As an improvement, an electrically controlled telescopic group is fixedly connected to the middle part of one end face of the heat conduction block located in the hot zone II, and a main heat conduction piece is fixedly connected to the outer end of the electrically controlled telescopic group.

[0010] As an improvement, an adjusting piece is fixedly connected to the electrically controlled telescopic group, a secondary heat conduction piece is rotatably connected to the multi-frame through a shaft rod, the front end of the secondary heat conduction piece is embedded in the main heat conduction piece, and a spring is fixedly connected to the tail end of the secondary heat conduction piece.

[0011] As an improvement, the silica gel sealing piece group is composed of two silica gel pieces, and the memory alloy passes through the joint between the two silica gel pieces.

[0012] As an improvement, the main heat-conducting sheet and the auxiliary heat-conducting sheet jointly constitute a heat-conducting group.

[0013] As an improvement, the main heat-conducting sheet and the auxiliary heat-conducting sheet are both provided with auxiliary air slots.

[0014] Compared with the prior art, the present application provides a digital television shell with heat dissipation and noise reduction synergistic functions, which has the following beneficial effects: 1. The application of memory alloy in the design of heat dissipation and noise reduction synergy of the television shell breaks through the inherent contradiction of traditional heat dissipation schemes through its temperature-responsive self-driving characteristics, bringing significant benefits in multiple dimensions, as follows: Dynamic adaptive high-efficiency heat dissipation: Memory alloy can automatically expand at high temperatures, precisely expanding the opening of the shell to the outside air. Compared with traditional fixed heat dissipation holes or continuously running heat dissipation fans, the "on-demand opening" feature can quickly improve air convection efficiency when heat is concentrated. The expanded opening at high temperatures can introduce more external cold air, accelerating the discharge of internal heat, avoiding overheating of devices and performance degradation, such as chip lag and frame drop. At the same time, its response does not require additional motors or control system driving, reducing energy consumption and avoiding failure risks caused by active driving components, making the heat dissipation process more efficient and stable. Full-scene noise reduction optimization experience: In a non-high-temperature state, the memory alloy automatically closes the opening, achieving physical isolation between the shell and the outside world. This design effectively suppresses the electromagnetic noise inside the television, such as high-frequency signals from chips and circuit current sounds radiating outward. Especially during quiet or low-volume viewing, it avoids the drawbacks of traditional heat dissipation holes becoming "noise channels", significantly improving audio purity and providing users with a more immersive audio-visual experience. In addition, the passive design without relying on heat dissipation fans completely eliminates mechanical operation noise, reducing acoustic interference from the source. Self-adaptive dust prevention and protection upgrade: The automatic closing feature of the memory alloy in a non-high-temperature state creates a dynamic protective barrier, addressing the pain point of traditional heat dissipation holes that are continuously open for heat dissipation, leading to dust intrusion. In a closed state, external dust, lint, and moisture cannot enter the shell, avoiding issues such as the formation of a thermal insulation layer on the surface of electronic devices, the combination of moisture causing circuit short circuits or metal contact oxidation, signal distortion, and device burnout, significantly reducing the probability of failure caused by dust accumulation and extending the service life and maintenance cycle of the television.

[0015] 2. The application further expands the synergy of television heat dissipation, noise reduction, and protection based on the variable opening design of the memory alloy by adding an auxiliary back plate, which has the following beneficial effects: The liquid cooling heat dissipation is strengthened, and the heat management efficiency is improved: the auxiliary back plate itself serves as a heat conduction plate, and in addition to providing a stable carrier for the installation of the liquid cooling pipe, a composite heat dissipation system of "active liquid cooling plus natural convection" is built. The liquid cooling pipe can directly contact the high-heat device inside the television, quickly absorb heat through liquid circulation, and evenly spread the heat to the entire plate surface through the large-area heat conduction characteristics of the auxiliary back plate; when the memory alloy opens the variable opening to introduce natural wind flow, the auxiliary back plate can serve as the core interface of heat exchange, accelerating the transfer of heat to the outside air, significantly improving the heat dissipation efficiency, especially in high-load operation scenarios, compared with single natural convection or liquid cooling scheme, the composite system can quickly control the temperature within the safety threshold, avoiding performance degradation caused by local overheating of the device; A physical isolation barrier is built to upgrade dust protection: during the natural wind flow cooling process, the auxiliary back plate can completely isolate the outside dust and impurities from the internal electrical devices. Even if the memory alloy opening is in the open state, the dust carried by the wind flow will first contact the surface of the auxiliary back plate, rather than directly adhering to the core devices such as chips and circuits; this isolation solves the contradiction in traditional cooling design that "wind flow cooling must be accompanied by dust intrusion", avoiding problems such as short circuit and oxidation caused by direct contact between impurities and electrical devices; at the same time, the auxiliary back plate can serve as a "blocking layer" for dust, and subsequent cleaning only needs to wipe the surface of the back plate, without the need to disassemble the internal television, greatly reducing the maintenance difficulty and prolonging the cleaning cycle and service life of the electrical devices; Enhance noise reduction isolation effect, optimize acoustic environment: the auxiliary back plate as a heat dissipation and noise reduction isolation plate can form a "double acoustic barrier" with the variable opening of the memory alloy. When the memory alloy closes the opening, the auxiliary back plate can further block the internal electromagnetic noise from radiating to the outside, and its material, such as metal or damping material, can absorb part of the high-frequency noise, reducing the noise penetration; when the memory alloy opens the opening for heat dissipation, the auxiliary back plate can divide the internal space and the external wind flow channel, reducing the "wind noise" generated by air turbulence to the internal electrical devices, and avoiding the direct interference of external environmental noise to the internal circuit through the opening.

[0016] 3、The wind flow angle of the lateral hole and the top hole convection port can be adjusted, and the surface area of the heat conduction sheet in the second assembly can be adjusted, which can bring the following beneficial effects: Accurate locking of high temperature area, realizing directional and efficient heat dissipation: The traditional heat dissipation port has a fixed angle, and the airflow can only diffuse along the fixed path, and it is difficult to cover the internal local high temperature area, such as the heat spot generated by the transient high load of the chip; and the adjustable design of the air flow port directly aims at the high temperature area position, so that the cold air accurately hits the heat conduction sheet near the heat source, reduces the loss of air flow in the transmission process, and at the same time, the surface area of the heat conduction sheet can be adjusted according to the size of the high temperature area. When a small range of high temperature appears locally, the heat density can be concentrated by reducing the area of the heat conduction sheet, and the heat exchange is accelerated; when a large area device such as a backlight module is heated, the heat absorption efficiency can be improved by expanding the surface area to avoid heat accumulation in the local area; The combination of the above "directional air supply and dynamic heat absorption" can directly hit the core of heat dissipation, significantly reduce the cooling time of the high temperature area, and avoid the performance fluctuation of the device caused by local overheating. Optimize heat exchange balance and prolong device life: The adjustable surface area of the heat conduction sheet can avoid the extreme conditions of "excessive heat dissipation" or "insufficient heat dissipation": when the internal temperature tends to be balanced, the heat conduction sheet area can be reduced to reduce unnecessary heat exchange, maintain the appropriate working temperature inside the device, and avoid the stress damage of the device caused by sudden temperature drop; at the same time, the precise control of the angle of the air flow port can reduce the direct impact of cold air on the low temperature area, avoid the occurrence of excessive temperature difference inside, and reduce the structural stress caused by thermal expansion and cold contraction, such as circuit board solder fatigue, thereby prolonging the service life of the electronic device from the details.

[0017] 4, The application cancels the heat dissipation fan, takes liquid cooling and natural convection regulation as the core, combines the cooperative matching of the auxiliary back plate and the adjustable air duct, and constructs an integrated solution of "no mechanical noise, high efficiency heat dissipation and dynamic dust prevention", which has the following advantages compared with the prior art: Eliminate mechanical noise and realize noise reduction operation base: After canceling the heat dissipation fan, the continuous mechanical noise generated by the friction of fan blades and the vibration of bearings in the traditional active heat dissipation, as well as the abnormal sound problem caused by dust accumulation and aging of the fan are eliminated. On this basis, the liquid cooling system transmits heat through liquid circulation without sound, the natural convection regulation relies on the physical properties of air flow to realize heat dissipation, and there is no mechanical operation component in the whole process, so that the television can be maximally noise-reduced when it is running under high load or watching under low volume; at the same time, the adjustable air duct can reduce the turbulence "wind noise" by optimizing the air flow path during natural convection, and the isolation effect of the auxiliary back plate further weakens the external radiation of internal electromagnetic noise, forming a three-fold acoustic protection of "liquid cooling and mute plus air duct noise reduction plus structure sound insulation", which significantly improves the auditory immersion of users; Build an efficient and collaborative heat dissipation system to adapt to the heat management needs of all scenarios: the combination of liquid cooling and natural convection breaks through the limitations of single heat dissipation mode, and cooperates with the auxiliary back plate and adjustable air duct to form a dynamic adaptive heat dissipation network. The liquid cooling system directly adheres to the high heat generating device, quickly absorbs heat through the high specific heat capacity of the liquid, and avoids the accumulation of local hot spots; the auxiliary back plate acts as a heat conduction core, evenly spreading the heat transferred by the liquid cooling to the plate surface, expanding the heat dissipation area; the adjustable air duct precisely controls the angle and air volume to guide the natural convection air to flow through the high temperature area, accelerating the heat dissipation to the outside; the above-mentioned "liquid cooling heat absorption plus back plate temperature conduction plus air duct heat dissipation" closed loop link can not only cope with the peak heat generated by instantaneous high power, such as chip instantaneous load surge, but also meet the continuous heat dissipation needs of long time low load operation, such as standby state. Compared with the "one size fits all" mode of traditional fan cooling, it can dynamically adjust according to the heat generating characteristics of the device, and the heat dissipation efficiency is effectively improved; Dynamic dustproof protection upgrade, prolong equipment life and stability: Unlike the "heat dissipation must enter dust" problem caused by the coexistence of cooling fan and fixed cooling hole in the prior art, the design realizes dynamic dustproof through multiple collaborative mechanisms: the adjustable air duct can be completely closed in the non-heat dissipation state, cooperating with the physical isolation of the auxiliary back plate to form a sealed space to block the invasion of external dust and moisture; when heat dissipation is needed, the air duct is only opened to the high temperature area, reducing the opening exposure area and time, and reducing the probability of impurity entering; the combination of the liquid cooling system and the auxiliary back plate can also reduce the direct contact between internal devices and air, further reducing the risk of dust accumulation; the above-mentioned "on-demand opening plus directional protection" mode can minimize the amount of dust accumulated in internal electronic components, avoiding problems such as circuit short circuit and reduced heat dissipation efficiency caused by dust, significantly prolonging the fault-free operation cycle of the equipment and reducing maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the main structure diagram of the present application; Figure 2 is another perspective view of the main structure of the present application; Figure 3 is a structure diagram related to the auxiliary back plate, side hole, top hole and heat conduction block of the present application; Figure 4 is a main structure position distribution diagram of the first component and the second component of the present application; Figure 5 is a side view of the related structure of the first component of the present application; Figure 6 is a related structure diagram after cutting the clamping cover part in the present application; Figure 7 is the present application Figure 6 is an enlarged view of structure A in the present application; Figure 8 is a three-dimensional structure diagram of the second component of the present application; Figure 9 Figure 2 is a front view of the second component of the present application.

[0019] In the figure: 1, partial casing; 2, display screen; 3, auxiliary back plate; 4, first component; 401, snap-on cover; 402, lateral hole; 403, top hole; 404, corrugated tube belt; 405, support plate; 406, drive shaft; 407, air flow pipe; 4071, air filter; 408, silica gel sealing piece group; 409, L-shaped frame; 410, memory alloy; 5, second component; 501, liquid cooling channel; 502, heat-conducting block; 503, sliding groove; 504, multi-sided frame; 505, electric control telescopic group; 506, main heat-conducting piece; 507, adjusting piece; 508, auxiliary heat-conducting piece; 509, spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] The present application will be described in further detail below according to the accompanying drawings and embodiments.

[0022] Embodiment: Please refer to Figures 1 to 7 shown in the figure: To solve the problems mentioned in the technical solutions, the embodiment of the present application provides a digital television shell with heat dissipation and noise reduction collaborative functions, which comprises: a partial casing 1, a display screen 2, and an auxiliary back plate 3 on the partial casing 1, wherein the partial casing 1 and the auxiliary back plate 3 together constitute a television casing; and further comprising a first component 4 arranged inside the casing. The first component 4 comprises a fastening cover 401 fixedly connected to the auxiliary back plate 3, the auxiliary back plate 3 separates the display screen 2 and the fastening cover 401 to form the heat area one and the heat area two, the sidewall of the fastening cover 401 is provided with equidistant lateral holes 402, and the top of the fastening cover 401 is provided with equidistant top holes 403; the inner wall of the partial casing 1 is fixedly connected with corrugated pipe belts 404 at the positions of the lateral holes 402, and the ends of the corrugated pipe belts 404 away from the inner wall of the partial casing 1 are fixedly connected with air flow pipes 407; the inner wall of the partial casing 1 is fixedly connected with support plates 405 symmetrically at the positions of the lateral holes 402, the support plates 405 are fixedly connected with driving shafts 406, and the driving shafts 406 are fixedly connected with the sidewall of the air flow pipes 407; the end of the air flow pipe 407 is fixedly connected with an air filter 4071, the air filter 4071 is composed of a frame plate and a pull-out filter screen; the air flow pipe 407 is fixedly connected with silica gel sealing pieces 408 symmetrically, the wall surface of the air flow pipe 407 is fixedly connected with L-shaped frames 409 symmetrically, and the L-shaped frames 409 are fixedly connected with memory alloys 410.

[0023] Wherein: The temperature sensors are installed at different heights in the television casing composed of the partial casing 1 and the auxiliary back plate 3, and the temperature sensors can control the driving shafts 406 to rotate through the total controller.

[0024] The first component 4 is used for self-adaptingly regulating the size of the air flow holes of the air flow pipe 407 according to the temperature, so as to dissipate heat, reduce noise and prevent dust.

[0025] The fastening cover 401 can be fixedly connected with the casing by means of fastening screws or buckles.

[0026] Under the natural air flow, the principle of "hot air rising" is used to form natural convection, the external air enters the casing from the lateral holes 402 and is discharged from the top holes 403, the air flow is guided, and the heat accumulation in the casing is avoided.

[0027] The air filter 4071 is of a slide-insertion type and can be conveniently replaced.

[0028] The silica gel sealing piece group 408 is composed of two silica gel pieces and is used for sealing the air flow pipe 407; and the memory alloy 410 passes through the joint thereof.

[0029] The memory alloy 410 will be transformed from the shape shown in the figure into an outwardly expanded U shape under temperature change. Figure 7

[0030] ​When selecting the shape memory alloy 410, first test the resistance of the silica gel sheet, then test the heating of the required shape memory alloy 410 on the test bench, and detect the expansion driving force of the shape memory alloy 410 at 50-100 degrees Celsius. After passing the test, it can be used.

[0031] The shape memory alloy 410 can be implemented as a copper-zinc-aluminum alloy (Cu-Zn-Al), and the thermal expansion coefficient is about 18x10⁻ 6 / °C to 25x10⁻ 6 / °C. By adjusting the ratio of Zn and Al (such as Zn 22%-28%, Al 4%-6%), the phase transition temperature can be adjusted to 50-100°C, which meets the temperature change of the electrical appliances in the shell.

[0032] It should be noted that: The formula ΔL=α·ΔT·L0 calculates the thermal expansion deformation, that is, the "linear elongation / contraction" of the material as the temperature rises, which is a common physical phenomenon of all materials (such as metals and plastics will expand and contract with heat).

[0033] But the core feature of the shape memory alloy is the "shape memory effect", and its large deformation comes from the phase change of martensite-austenite, which is a reversible change of crystal structure, accompanied by a dramatic recovery of macro shape (rather than a small thermal expansion and contraction).

[0034] The deformation in this paper comes from the "phase change driven shape memory effect", which is an "active shape recovery" rather than a passive thermal expansion and contraction, so "fast and significant deformation" can be observed (such as an alloy wire a few centimeters long can be instantly curled into a ball).

[0035] Specifically, the deformation mechanism of the shape memory alloy made of copper-zinc-aluminum alloy (Cu-Zn-Al) also needs to distinguish between "thermal expansion" and "shape memory effect (phase change deformation)", which are significantly different, as follows: 1. Thermal expansion deformation (small, non-core feature) The thermal expansion coefficient of copper-zinc-aluminum alloy is about 18x10⁻ 6 / °C to 25x10⁻ 6 / °C (with slight differences due to component adjustments, taking the typical value of 20x10⁻ 6 / °C), which is the "linear elongation" of the material as the temperature rises, which is a common physical phenomenon of all materials.

[0036] Take a 10cm length and a temperature difference of 80°C as an example: According to the thermal expansion formula ΔL=α·ΔT·L0, we get: ΔL=20x10⁻ 680°C x 100 mm = 0.16 mm (i.e. 0.016 cm).

[0037] 2. Shape Memory Effect (Phase Transformation Deformation, Core Property, Source of Large Deformation) The core advantage of copper-zinc-aluminum alloy is the significant shape memory effect triggered by phase transformation: by adjusting the proportion of Zn (22%-28%) and Al (4%-6%), the phase transformation temperature (Af, the final temperature of austenite transformation) can be regulated within 50-100°C, and at this temperature, the crystal structure transformation from martensite to austenite will be accompanied by a dramatic shape recovery, with a recoverable strain of up to 7%-8%.

[0038] Take a length of 10 cm (100 mm) as an example: Phase transformation deformation = initial length x recoverable strain = 100 mm x 7% = 7 mm (0.7 cm) or 100 mm x 8% = 8 mm (0.8 cm).

[0039] Therefore, the "deformation" referred to in this article is the shape memory effect driven by the phase transformation of copper-zinc-aluminum alloy, rather than simple thermal expansion. This property allows it to generate sufficient deformation (such as driving the expansion of a silica gel sealing piece group) within the 50-100°C range, while maintaining a low cost advantage, making it suitable for scenarios with high deformation requirements.

[0040] Further embodiments: please refer to Figure 3 , Figure 4 , Figure 8 , Figure 9 as shown: The second assembly 5 includes a liquid cooling channel 501 opened on the auxiliary back plate 3, and a heat conduction block 502 fixedly connected through the auxiliary back plate 3 at equal intervals, one end of the heat conduction block 502 is located in the first heat zone where the electronic device is located, and the other end is located in the second heat zone; one end face of the heat conduction block 502 located in the first heat zone is provided with a sliding groove 503, and the other end face of the heat conduction block 502 located in the second heat zone is fixedly connected with a multi-edge frame 504, and the middle part of the end face of the heat conduction block 502 located in the second heat zone is fixedly connected with an electric control telescopic group 505, the outer end of the electric control telescopic group 505 is fixedly connected with a main heat conduction piece 506, the electric control telescopic group 505 is fixedly connected with an adjusting piece 507, the multi-edge frame 504 is rotatably connected with a secondary heat conduction piece 508 through a shaft rod, the front end of the secondary heat conduction piece 508 is embedded in the main heat conduction piece 506, and the tail end of the secondary heat conduction piece 508 is fixedly connected with a spring 509.

[0041] Among them: The second assembly 5 is used to absorb and conduct the heat generated by the devices in the television, and the air flow controlled by the first assembly 4 is used for temperature dissipation.

[0042] The liquid cooling channel 501 can be placed with a liquid cooling pipe.

[0043] The heat-conducting block 502 is in close contact with the wall of the auxiliary rear plate 3.

[0044] The opening of the groove 503 can be used to determine whether to install heat-conducting fins or other heat-conducting components, depending on the specific circumstances.

[0045] The electrically controlled telescopic assembly 505 is composed of electrically controlled telescopic components, and heat insulation cotton is placed between it and the heat-conducting block 502.

[0046] The main heat sink 506 and the secondary heat sink 508 together constitute the heat conduction group.

[0047] Both the main heat sink 506 and the secondary heat sink 508 are provided with auxiliary air slots to increase the contact area between the heat conduction group and the airflow during natural convection.

[0048] Spring 509 is used to push the auxiliary heat-conducting plate 508 to rotate.

[0049] The working principle of all the content in the above embodiments is as follows: In the initial state: The airflow duct 407 is in a straight state; the airflow channel of the airflow duct 407 is blocked by the silicone sheet of the silicone sealing sheet assembly 408; the shape memory alloy 410 is as follows. Figure 7 As shown, it is not deformed; the secondary heat-conducting plate 508 is housed in the inner groove of the primary heat-conducting plate 506; the spring 509 is in a compressed state.

[0050] The following is the working process of the first component 4: Under normal conditions, outside air will only convect from the air filter 4071 at the side hole 402 to the air filter 4071 at the top hole 403; When the internal temperature of the casing is too high, typically between 60-100°C, the shape memory alloy 410 will deform under the influence of temperature. Please refer to the attached diagram. Figure 7 As the temperature inside the casing changes, the shape memory alloy 410 gradually transforms into a U-shape under the phase change-driven shape memory effect. During this process, the silicone sheet within the silicone sealing sheet assembly 408 that seals the airflow duct 407 expands. At this point, the air convection channel changes from the original single channel from the air filter 4071 at the side hole 402 to the air filter 4071 at the top hole 403; an additional convection channel is added from the corrugated strip 404 at the side hole 402, the airflow duct 407, to the corrugated strip 404 at the top hole 403, and the airflow duct 407. (See attached diagram.) Figure 4 Furthermore, by increasing the convection channels, the amount of air entering the casing can be effectively increased; Further, the temperature sensor arranged in the casing monitors the temperature of the area where it is located. When the temperature of the area where it is located rises, it controls the driving shaft 406 to adjust the direction of the air flow pipe 407 through the general controller. In the adjustment process, the design of the shape change of the memory alloy 410 in its own characteristics to expand the air flow opening can effectively and quickly dissipate the temperature of the area where the temperature rises. It should be noted that the liquid cooling channel 501 also cooperates to dissipate heat by liquid cooling during the above working process. The above working process is described in detail with reference to Figures 1 to 7 .

[0051] The working process of the second assembly 5 is as follows: Further, in addition to the first assembly 4 regulating the amount of air entering the casing per unit time, the second assembly 5 also assists the first assembly 4 in effective heat dissipation by changing the heat conduction area. For details, please refer to the accompanying Figure 8 and the accompanying Figure 9 The general controller controls the contraction of the telescopic rod in the electrically controlled telescopic group 505. In the contraction, the auxiliary heat conduction sheet 508 originally in contact with the adjusting sheet 507 rotates under the action of the elastic potential energy of the spring 509. In the rotation, the auxiliary heat conduction sheet 508 gradually moves outward from the slot in the main heat conduction sheet 506, thereby expanding the surface area of the heat conduction body composed of itself and the main heat conduction sheet 506. Under the heat conduction of the main heat conduction sheet 506, the main heat conduction sheet 506 and the auxiliary heat conduction sheet 508 will carry the temperature caused by the operation of the electronic devices in the casing. Further, with the natural convection of the first assembly 4, the temperature exchange between the inside and outside of the casing can be effectively realized, thereby realizing rapid heat dissipation.

[0052] The above working process is described in detail with reference to Figure 3 , Figure 4 , Figure 8 , Figure 9 .

[0053] It should be noted that the sealing of the air flow pipe 407 by the silica gel sealing sheet group 408 and the cooperation of the auxiliary back plate 3 can also effectively isolate external dust and other impurities, and can effectively isolate electromagnetic noise in the casing.

[0054] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0055] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. A digital television casing with combined heat dissipation and noise reduction functions, comprising: The TV set includes a partial housing (1), a display screen (2), and an auxiliary rear plate (3) on the partial housing (1), wherein the partial housing (1) and the auxiliary rear plate (3) together constitute the TV set; characterized in that it also includes a first component (4) disposed inside the set. The first component (4) includes a snap-fit ​​cover (401) fixedly connected to the auxiliary rear plate (3). The auxiliary rear plate (3) separates the display screen (2) and the snap-fit ​​cover (401) to form a hot zone one and a hot zone two. The snap-fit ​​cover (401) has equidistant through-holes (402) on its side wall and top holes (403) equidistant through-holes (403) on its top. A corrugated hose (404) is fixedly connected to the inner wall of the partial housing (1) at the location of the side hole (402), and an airflow pipe (407) is fixedly connected to the end of the corrugated hose (404) away from the inner wall of the partial housing (1). The inner wall of the partial housing (1) is symmetrically fixedly connected to a support plate (405) at the location of the side hole (402). A drive shaft (406) is fixedly connected to the support plate (405). The drive shaft (406) is fixedly connected to the side wall of the airflow pipe (407). An air filter element (4071) is fixedly connected to the end of the air duct (407), and the air filter element (4071) consists of a frame plate and a pull-out filter screen; A silicone sealing sheet assembly (408) is symmetrically fixedly connected inside the airflow duct (407), and an L-shaped frame (409) is symmetrically fixedly connected to the wall of the airflow duct (407). A shape memory alloy (410) is fixedly connected to the L-shaped frame (409).

2. The digital television casing with heat dissipation and noise reduction synergistic functions according to claim 1, characterized in that: It also includes a second component (5) that is fixedly connected inside the housing; The second component (5) includes a liquid cooling channel (501) opened on the auxiliary rear plate (3), and a heat-conducting block (502) is fixedly connected through the auxiliary rear plate (3) at equal intervals. One end of the heat-conducting block (502) is located in the first hot zone where the electronic device is located, and the other end is located in the second hot zone. The heat-conducting block (502) has a groove (503) on one end face of the heat zone one, and a multi-frame (504) is symmetrically and fixedly connected to one end face of the heat-conducting block (502) in the heat zone two.

3. A digital television casing with heat dissipation and noise reduction synergistic functions according to claim 2, characterized in that: The heat-conducting block (502) is fixedly connected to an electrically controlled telescopic assembly (505) at the middle of one end face of the heat zone two, and a main heat sink (506) is fixedly connected to the outer end of the electrically controlled telescopic assembly (505).

4. A digital television casing with heat dissipation and noise reduction synergistic functions according to claim 3, characterized in that: An adjusting plate (507) is symmetrically fixedly connected to the electronically controlled telescopic assembly (505). A secondary heat-conducting plate (508) is rotatably connected to the multi-frame (504) via a shaft. The front end of the secondary heat-conducting plate (508) is embedded in the primary heat-conducting plate (506). A spring (509) is fixedly connected to the tail end of the secondary heat-conducting plate (508).

5. A digital television casing with heat dissipation and noise reduction synergistic functions according to claim 1, characterized in that: The silicone sealing sheet assembly (408) consists of two silicone sheets, with a shape memory alloy (410) inserted through its seam.

6. A digital television casing with heat dissipation and noise reduction synergistic functions according to claim 4, characterized in that: The main heat sink (506) and the secondary heat sink (508) together constitute a heat conduction group.

7. A digital television casing with heat dissipation and noise reduction synergistic function according to claim 4, characterized in that: Both the main heat sink (506) and the secondary heat sink (508) are provided with auxiliary air slots.

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