Foldable support, foldable projector, and foldable projection device

Abstract

A foldable support, a foldable projector, and a foldable projection device. The foldable support (1) comprises at least two foldable members (10) and at least one pivoting assembly (20); and the two adjacent foldable members (10) are rotatably connected by means of the pivoting assembly (20), so that the foldable support (1) is foldable. Either of the two foldable members (10) located on the outer side is provided with a fixing portion; and the fixing portion is configured to be detachably connected to an electronic device. The foldable support (1) can achieve a foldable effect, so that the height and angle of the foldable support (1) can be adjusted by means of rotation during use, thereby adjusting the height and angle of the electronic device that is detachably connected by means of the fixing portion, thus improving the adaptability of the electronic device.

Description

Folding stands, folding projectors and folding projection devices

[0001] This application claims priority to Chinese Patent Application No. 202520115035.3, filed on January 17, 2025, China Patent Office; Chinese Patent Application No. 202520116370.5, filed on January 17, 2025, China Patent Office; Chinese Patent Application No. 202520116321.1, filed on January 17, 2025, China Patent Office; and Chinese Patent Application No. 202520323975.1, filed on February 27, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of projection equipment technology, such as a folding stand, a folding projector, and a folding projection device. Background Technology

[0003] A projector is a device that projects video, images, or text onto a screen for display. It is now widely used in homes, conference rooms, schools, and cinemas. However, traditional projectors are large and heavy, making them inconvenient to move or carry. With the continuous development of projection technology, people have placed higher demands on the size and portability of projectors. Due to the complex structure and numerous components of existing projectors, how to reduce their size while improving ease of use has become a challenge that needs to be addressed.

[0004] Traditional projectors typically consist of a main unit and a stand. The stand is used to support the main unit, which results in a large overall size of the projector. Removing the stand, on the other hand, makes the projector less adjustable and stable, and also increases its size. Summary of the Invention

[0005] This application provides a folding bracket that can dock and support electronic devices, and is detachable and foldable, improving volume utilization and facilitating storage.

[0006] This application provides a folding bracket configured to support an electronic device. The folding bracket includes at least two folding members and at least one pivot assembly. Two adjacent folding members are rotatably connected by the pivot assembly so that the folding bracket can be folded. One of the two outer folding members is provided with a fixing part, which is configured to be detachably connected to the electronic device.

[0007] In some embodiments, the fixing part is provided with a magnetic attraction element, a fixing buckle, or a fixing thread to enable magnetic, snap-fit, or threaded connection between the folding bracket and the electronic device.

[0008] In some embodiments, one of two adjacent folding members is provided with a rotating groove, and the other is provided with a pivoting assembly, the pivoting assembly being rotatably connected to the rotating groove.

[0009] In some embodiments, the pivoting assembly includes a rotating base and two pivot shafts. The rotating base is disposed on the folding member, and each of the opposite ends of the rotating base is provided with a pivot shaft, which is rotatably connected to a rotating groove.

[0010] In some embodiments, the groove wall of the rotating groove is provided with a first limiting part, and the outer periphery of the pivot shaft is provided with a second limiting part. The first limiting part and the second limiting part are configured to be able to move closer to each other or further away from each other in order to limit the rotation angle of two adjacent folding pieces.

[0011] In some embodiments, the folding bracket also includes at least one of an audio module and a battery module;

[0012] When the folding bracket also includes an audio module, the audio module is located within any of the folding components and is capable of external power connection;

[0013] When the folding bracket also includes a battery module, the battery module is located within any folding element and is capable of external power connection;

[0014] When the folding bracket also includes an audio module and a battery module, the audio module is disposed within either folding member, the battery module is disposed within either folding member, the battery module is electrically connected to the audio module, and at least one of the audio module and the battery module is capable of external power connection.

[0015] In some embodiments, the folding member is further provided with an electrical connector configured to enable external electrical connection of at least one of the audio module and the battery module.

[0016] In some implementations, the electrical connector is a plug-in connector or a magnetic electrical transmission device.

[0017] In some embodiments, the pivot assembly has a wiring channel with an electrical connection wire configured to electrically connect the battery module to the audio module, or to electrically connect at least one of the battery module and the audio module to an external power source.

[0018] This application also provides a foldable projector that enables detachable connection and foldability of electronic devices and foldable brackets, is compact in size, improves volume utilization, and is easy to store.

[0019] This application provides a foldable projector, including a projection module and a foldable bracket as described in any of the above embodiments, wherein the projection module is detachably connected to the foldable bracket.

[0020] This application provides a foldable projection device that improves ease of use, enhances heat dissipation, and delivers a better user experience.

[0021] This application provides a foldable projection device, including an optical engine module, a speaker module, and a hinge. The optical engine module is electrically connected to the speaker module and is rotatably connected to the speaker module through the hinge, so that the optical engine module and the speaker module form a foldable structure.

[0022] In some embodiments, the horn module is provided with a horn opening, which is located on the circumferential sidewall of the horn module, so that the horn opening can be exposed to the external environment after the optomechanical module and the horn module are folded.

[0023] In some implementations, multiple horn openings are provided on both opposite sides of the horn module.

[0024] In some embodiments, the speaker module is provided with a horn opening, which is located at the end of the speaker module, so that when the optomechanical module and the speaker module are folded, the optomechanical module can block the horn opening.

[0025] In some implementations, multiple horn openings are provided on both sides of the end of the horn module.

[0026] In some embodiments, the foldable projection device further includes a power supply module electrically connected to the speaker module and the optical engine module; two hinges are provided, with the power supply module hinged to the speaker module through one hinge, so that the optical engine module, speaker module and power supply module together constitute a foldable structure.

[0027] In some embodiments, horn openings are provided at both ends of the horn module so that when the power supply module, optomechanical module, and horn module are folded, the optomechanical module and power supply module can block the horn openings located at both ends of the horn module.

[0028] In some implementations, the thickness of the speaker module is less than that of the power supply module and the optomechanical module.

[0029] In some embodiments, the folding projection device further includes a power supply module, which is fixedly disposed on the speaker module at one end away from the optical engine module and electrically connected to the speaker module and the optical engine module.

[0030] In some implementations, the power supply module is a battery pack.

[0031] This application provides a pivoting mechanism that enhances controllability and improves ease of operation.

[0032] This application provides a pivoting mechanism, including: a first pivoting connector, a second pivoting connector, and a hovering structure. The first pivoting connector includes a pivot member and is rotatably connected to the second pivoting connector through the pivot member. The pivot member is provided with a hovering structure, which is configured to provide a locking force when the first pivoting connector and the second pivoting connector rotate relative to each other to a preset angle, so that the first pivoting connector and the second pivoting connector are hovered at the preset angle.

[0033] In some embodiments, the second pivot connector has a pivot hole, the pivot is a pivot shaft, the first end of the pivot shaft is rotatably inserted into the pivot hole, and the first end of the pivot shaft is provided with a hovering structure.

[0034] In some embodiments, the hovering structure is a friction damper sandwiched between the first end of the pivot and the inner wall of the pivot hole to provide rotational friction for the pivot and the second pivot connection.

[0035] In some embodiments, an angle limiting structure is provided between the pivot member and the second pivot member. When the first pivot member and the second pivot member rotate relative to each other, the pivot member is limited by the angle limiting structure, so that the first pivot member achieves axial rotation stroke limitation.

[0036] In some embodiments, the angle limiting structure includes a limiting block and a stop block. The second pivot connector protrudes with a limiting block, and the pivot connector protrudes with a stop block. When the first pivot connector and the second pivot connector rotate relative to each other to the maximum preset angle, the stop block can rotate to abut against the limiting block.

[0037] In some embodiments, the first pivoting connector includes a pivot seat and a locking member. The pivot seat is configured to be fixedly connected to the first rotating body and has a mounting hole. The second end of the pivot is inserted into the mounting hole and fixedly connected to the pivot seat by the locking member.

[0038] In some embodiments, the pivot seat is also provided with a wire hole, which is configured to allow and constrain conductive wires.

[0039] In some embodiments, a portion of the second pivot connector is configured as a pivot fixing portion, which is configured to be fixedly connected to the second rotating body, and another portion of the second pivot connector is configured as a sleeve portion wound around the outer surface of the pivot.

[0040] In some embodiments, the second pivoting connector further includes a reinforcing rib plate, which is fixedly connected between the pivoting fixing part and the sleeve part.

[0041] This application provides a foldable device that enhances controllability and improves ease of use by using the pivoting mechanism in any of the above embodiments.

[0042] This application provides a foldable device, including a first rotating body, a second rotating body, and a pivoting mechanism as described in any of the above embodiments. A first pivoting connector of the pivoting mechanism is connected to the first rotating body, and a second pivoting connector of the pivoting mechanism is connected to the second rotating body, so that the first rotating body and the second rotating body constitute a foldable structure.

[0043] This application provides a heat dissipation structure for high-density electronic devices with multiple hot spots. Without increasing the weight and volume of the high-density electronic devices or changing the original layout of internal components, it can accurately and quickly dissipate heat, achieve rapid cooling of multiple hot spots, improve the performance and safety stability of high-density electronic devices, and reduce costs and manufacturing difficulty.

[0044] This application provides a heat dissipation structure for high-density electronic devices with multiple hot spots, including a housing and a fluid guiding component. The housing has a cavity configured to accommodate the fluid guiding component and multiple heat-generating components. The surface of the housing is provided with a fluid inlet and a fluid outlet. The inner wall of the cavity is provided with multiple heat dissipation slots. The heat dissipation slots are thermally connected to the corresponding heat-generating components, and the two ends of each heat dissipation slot are respectively connected to the fluid inlet and the fluid outlet. The fluid guiding component is disposed on the heat dissipation path of the heat dissipation slot.

[0045] In some embodiments, a flow collection groove is also provided on the inner wall surface of the cavity. The flow collection groove is connected to the fluid outlet and multiple heat dissipation channels, and a fluid guiding component is provided in the flow collection groove.

[0046] In some implementations, the fluid guiding component is a cooling fan.

[0047] In some implementations, the cross-section of the collection channel is circular.

[0048] In some embodiments, the fluid guiding component is a cooling fan with a square housing. The fluid inlet and fluid outlet are located opposite each other on both sides of the housing. The collecting groove is located at one corner of the housing. Multiple heat dissipation channels are arranged in a star-shaped pattern in the cavity. The side of the housing without a fluid inlet has a guiding gap with the heat-generating component. The guiding gap connects the fluid inlet and part of the heat dissipation channels.

[0049] In some implementations, at least one heat dissipation channel includes at least two branch channels.

[0050] In some implementations, the width of the branch channels is the same.

[0051] In some embodiments, the bottom of the heat dissipation channel is inclined at an angle to the bottom surface of the housing.

[0052] In some implementations, the thickness of the inner wall of the cavity is set to H, and the depth of the end of the heat dissipation channel facing the fluid inlet is set to h1, A=h1 / H, and A satisfies: 0.3≤A<0.5;

[0053] Let the depth of the end of the heat dissipation channel facing the collection channel be h2, B = h2 / H, and B satisfy: 0.5 < B ≤ 0.7.

[0054] In some embodiments, the inner wall of the cavity is provided with multiple connecting posts protruding from it, and the heating element is threadedly connected to the connecting posts via threaded connectors.

[0055] This application provides an electro-optical device that, by setting a heat dissipation structure for high-density electronic devices with multiple hot spots in any of the above embodiments, helps the overall device maintain stable performance during long-term operation, extends its service life, and improves the user experience.

[0056] This application provides an electronic optical device, including an auxiliary structure and a heat dissipation structure for high-density electronic devices with multiple hot spots in any of the above embodiments, wherein the auxiliary structure is connected to the heat dissipation structure for high-density electronic devices with multiple hot spots. Attached Figure Description

[0057] Figure 1 is an isometric view of the folding bracket provided in an embodiment of this application;

[0058] Figure 2 is a side view of the foldable projector provided in an embodiment of this application;

[0059] Figure 3 is an exploded view of the foldable projector provided in the embodiment of this application;

[0060] Figure 4 is an isometric view of the folding component in the folding bracket provided in the embodiment of this application;

[0061] Figure 5 is an isometric view of the pivot assembly in the folding bracket provided in the embodiment of this application;

[0062] Figure 6 is an exploded view of the pivot assembly in the folding bracket provided in the embodiment of this application;

[0063] Figure 7 is an isometric view of the rotating seat in the folding bracket provided in the embodiment of this application;

[0064] Figure 8 is an isometric view of the folding bracket provided in an embodiment of this application;

[0065] Figure 9 is a side view of the foldable projector provided in an embodiment of this application;

[0066] Figure 10 is an exploded view of the folding projector provided in the embodiment of this application;

[0067] Figure 11 is a schematic diagram of the unfolded structure of the folding projection device provided in the embodiment of this application;

[0068] Figure 12 is a schematic diagram of the foldable projection device provided in the embodiment of this application when folded;

[0069] Figure 13 is a schematic diagram of the speaker module provided in an embodiment of this application;

[0070] Figure 14 is a structural schematic diagram of a speaker module provided in other embodiments of this application;

[0071] Figure 15 is a schematic diagram of the pivoting mechanism provided in an embodiment of this application;

[0072] Figure 16 is an exploded view of the first pivot connector and the second pivot connector provided in the embodiments of this application;

[0073] Figure 17 is an exploded view of the first pivoting connector provided in an embodiment of this application;

[0074] Figure 18 is a schematic diagram of the structure of the pivot seat provided in an embodiment of this application;

[0075] Figure 19 is a schematic diagram of the connection between the second pivot connector and the pivot provided in the embodiment of this application;

[0076] Figure 20 is a structural schematic diagram of the second pivot connector provided in an embodiment of this application;

[0077] Figure 21 is a schematic diagram of the structure of the pivot provided in an embodiment of this application;

[0078] Figure 22 is an internal structural diagram of a heat dissipation structure for high-density electronic devices with multiple hot spots provided in an embodiment of this application.

[0079] Figure 23 is an exploded view of the heat dissipation structure for high-density electronic devices with multiple hot spots provided in the embodiments of this application;

[0080] Figure 24 is a schematic diagram of the internal structure of the housing provided in an embodiment of this application;

[0081] Figure 25 is a cross-sectional view of the housing provided in an embodiment of this application;

[0082] Figure 26 is a magnified view of part A in Figure 25;

[0083] Figure 27 is a magnified view of part B in Figure 25.

[0084] In the picture:

[0085] 1. Folding bracket; 2. Projection module; 2101. Top cover; 2102. Bottom cover; 220. Optical engine assembly; 230. Optical engine driver board assembly; 240. Connecting parts;

[0086] 10. Folding component; 101. Rotating groove; 102. Wire guide groove; 11. First limiting part;

[0087] 20. Pivoting assembly; 21. Rotating base; 211. Wire passage; 22. Pivoting shaft; 221. Second limiting part;

[0088] 30. Audio module; 40. Battery module; 50. Electrical connectors;

[0089] 201. Optomechanical module; 202. Speaker module; 2021. Speaker mouth; 203. Hinge; 204. Power supply module;

[0090] 301. First pivot connector; 311. Pivot; 3111. Through hole; 312. Pivot seat; 3121. Mounting hole; 3211. Slot; 3122. Wire hole; 313. Locking element;

[0091] 302. Second pivot connector; 3201. Rotary hole; 321. Pivot fixing part; 3210. Fixing hole; 322. Sleeve part; 323. Reinforcing rib plate;

[0092] 331. Limit block; 332. Stop block;

[0093] 100. Projection component; 200. Main control component;

[0094] 401. Housing; 4101. Flow guide gap; 411. Fluid inlet; 412. Fluid outlet; 413. Heat dissipation channel; 4131. Branch flow channel; 414. Collection channel;

[0095] 402. Fluid guiding components;

[0096] 403. Connecting column. Detailed Implementation

[0097] The present application will now be described in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely for illustrative purposes. For ease of description, only the parts of the structure relevant to the present application are shown in the accompanying drawings.

[0098] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the meaning of the above terms in this application as appropriate.

[0099] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or indicating that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or indicating that the first feature is at a lower horizontal level than the second feature.

[0100] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0101] Example 1

[0102] This embodiment provides a folding bracket configured to support electronic devices. Referring to Figures 1 to 3, the folding bracket 1 includes at least two folding members 10 and at least one pivot assembly 20. Two adjacent folding members 10 are rotatably connected by the pivot assembly 20 so that the folding bracket 1 can be folded. Either of the two outer folding members 10 is provided with a fixing part, which is configured to be detachably connected to the electronic device.

[0103] The folding bracket 1 of this embodiment achieves its foldable characteristic through at least two folding parts 10 and at least one pivoting component 20. This allows the folding bracket 1 to be rotated during use, thereby adjusting its height and angle. This, in turn, enables the height and angle of the electronic device detachably connected via the fixing part to be adjustable, improving the adaptability of the electronic device. Furthermore, the folding bracket 1 is detachably connected to the electronic device via the fixing part, allowing it to be used independently or in conjunction with external electronic devices. Its foldability, ease of storage, and compact size significantly improve its volume utilization, achieving portability for both the folding bracket 1 and the foldable projector using it.

[0104] For example, the above-mentioned electronic device is a projection module 2 in this embodiment, and can be adapted to meet actual needs in other embodiments.

[0105] Referring to Figures 1 to 3, in this embodiment, the number of folding members 10 is set to two, and the corresponding pivot component 20 is set to one. The two folding members 10 are sufficient to satisfy the folding effect of the folding bracket 1, achieving a double-folding effect. For example, the first folding member and the second folding member are respectively set from the side away from the projection module 2 to the side away from the projection module 2. The first folding member is set to load the projection module 2, and the second folding member is set to support the projection module 2 on an external desktop or other bearing surface.

[0106] For example, the detachable connection between the folding bracket 1 and the electronic device can be achieved by using detachable connection methods such as threaded connection, snap-fit, or magnetic connection in related technologies.

[0107] Optionally, the fixing part is provided with a magnetic suction element, a fixing buckle, or a fixing thread to enable magnetic, snap-fit, or threaded connection between the folding bracket 1 and the electronic device. For example, the fixing part is provided with a magnetic suction element to enable magnetic connection between the folding bracket 1 and the electronic device. Furthermore, the folding bracket 1 and the projection module 2 are magnetically connected, allowing them to be arranged face-to-face, thereby improving the support strength for the projection module 2.

[0108] In some embodiments, a first folding member and a second folding member are respectively provided from the side away from the projection module 2 to the side away from the projection module 2. The first folding member is used to mount the projection module 2, and the aforementioned fixing part can be provided in the first folding member. For example, the magnetic suction member of the fixing part can be embedded inside the first folding member. To ensure the stability of the magnetic connection between the first folding member and the projection module 2, a magnetic attraction structure needs to be configured at the corresponding position where the projection module 2 and the first folding member are attached. For example, a magnetic suction member with opposite poles to the magnetic suction member in the first folding member can be selected. This built-in design does not disrupt the appearance of the folding bracket 1, and ensures a stable and detachable connection between the folding bracket 1 and the projection module 2 through magnetic attraction, with both surfaces tightly fitted together, effectively improving support reliability.

[0109] Please refer to Figures 2, 4 to 7. In this embodiment, one of the two adjacent folding pieces 10 is provided with a rotating groove 101, and the other is provided with a pivoting assembly 20. The pivoting assembly 20 is rotatably connected to the rotating groove 101 to realize the rotatable connection between the two adjacent folding pieces 10.

[0110] Optionally, the rotating groove 101 and the pivot assembly 20 are interference-fitted to provide a certain resistance to their rotation, meaning they can only rotate by external force and cannot rotate automatically by their own weight, thus giving the folding bracket 1 a certain degree of stability. In other embodiments, the folding bracket 1 may also be provided with a locking structure to lock the rotation between the rotating groove 101 and the pivot assembly 20, thereby locking the unfolded and folded positions of the rotating groove 101 and the pivot assembly 20 and improving the reliability of the folding bracket 1.

[0111] For example, the pivot assembly 20 includes a rotating seat 21 and two pivot shafts 22. The rotating seat 21 is disposed on the folding member 10. Each of the opposite ends of the rotating seat 21 is provided with a pivot shaft 22. The pivot shafts 22 are rotatably connected to the rotating groove 101 to realize the rotational connection between the two folding members 10.

[0112] Optionally, the groove wall of the rotating groove 101 is provided with a first limiting part 11, and the outer periphery of the pivot shaft 22 is provided with a second limiting part 221. The first limiting part 11 and the second limiting part 221 are configured to be able to move closer to each other or further away from each other, so as to limit the rotation angle of the two adjacent folding pieces 10 and avoid damage to the electronic equipment due to excessive rotation angle.

[0113] In some embodiments, the position and size of the first limiting part 11 and the second limiting part 221 can be adaptively changed according to the angle range limited by actual needs.

[0114] For example, the groove wall of the rotating groove 101 is provided with an arc-shaped protrusion facing the pivot shaft 22 as a first limiting part 11, and the outer periphery of the pivot shaft 22 is also provided with an arc-shaped protrusion as a second limiting part 221. During the relative rotation of the first limiting part 11 and the second limiting part 221, the first limiting part 11 and the second limiting part 221 can abut against each other to limit the rotation angle between the two folding pieces 10.

[0115] In this embodiment, the folding member 10 can be a frame structure or a shell, with corresponding electronic structures integrated inside, so that the folding bracket 1 can have the functions of support, sound, or external charging.

[0116] Referring to Figure 3, exemplarily, the folding bracket 1 further includes an audio module 30, which is disposed within any folding member 10 and is capable of external electrical connection; or the folding bracket 1 further includes a battery module 40, which is disposed within any folding member 10 and is capable of external electrical connection; or the folding bracket 1 further includes both an audio module 30 and a battery module 40, with the audio module 30 and battery module 40 disposed within either folding member 10, the battery module 40 being electrically connected to the audio module 30, and at least one of the audio module 30 and battery module 40 being capable of external electrical connection. That is, the folding bracket 1 can integrate at least one of the audio module 30 and battery module 40, enabling it to provide power and / or audio functionality on its own. Furthermore, integrating the audio module 30 and battery module 40 onto the folding bracket 1 eliminates the need to place them on the projection module 2 of the folding projector, allowing each heat-generating module to be separately configured, thereby accelerating heat dissipation and operation of each heat-generating module.

[0117] For example, the folding bracket 1 includes an audio module 30 and a battery module 40, and the audio module 30 and the battery module 40 are respectively disposed in different folding parts 10, so as to achieve the effect that the heat dissipation of each heat-generating module does not affect each other, thereby improving heat dissipation efficiency and service life.

[0118] Both the speaker module 30 and the battery module 40 can utilize structures commonly used in the projector industry. For example, the power module is a battery pack with high energy density, which allows for a reduction in the size and weight of the power module, thus meeting the portability requirements of this foldable projector. Furthermore, the battery pack provides a longer operating time, enhancing the durability of the foldable projector and providing a better user experience. In addition, the power module is convenient and fast to charge, ensuring that the foldable projector can quickly regain its operational capability after its power is depleted.

[0119] Since electronic structures such as the audio module 30 and the battery module 40 are located on different folding members 10, electrical connections are required between them. Therefore, exemplarily, the audio module 30 and the battery module 40 are connected via electrical cables or wirelessly. Exemplarily, in this embodiment, the audio module 30 and the battery module 40 are connected via electrical cables, or at least one of the battery module 40 and the audio module 30 is electrically connected to an external source, resulting in a simple structure and low cost.

[0120] Referring to Figure 7, to avoid the connection wires being exposed and affecting aesthetics and safety, the pivot assembly 20 may optionally have a wire passage 211. The wire passage 211 is provided with an electrical connection wire, which is configured to electrically connect the battery module 40 to the audio module 30, or to electrically connect at least one of the battery module 40 and the audio module 30 to the outside. The wire passage 211 can realize the passage and protection of the electrical connection wires between two adjacent folding parts 10.

[0121] For example, the wire passage 211 is provided on the rotating base 21, and the wire passage groove 102 is provided at the position where the folding member 10 is connected to the pivot assembly 20. The wire passage groove 102 is connected to the wire passage 211, thereby realizing the conductive connection between the electronic structure in the folding member 10 and the electronic structure in other folding members 10.

[0122] When the folding bracket 1 integrates electronic structures such as an audio module 30 and / or a battery module 40, an electrical connection structure is also required when it connects to external electronic devices. Therefore, optionally, the folding member 10 is also provided with an electrical connector 50, which is configured to realize the external electrical connection of at least one of the audio module 30 and the battery module 40, that is, to realize the electrical connection between the electronic structure inside the folding bracket 1 and the external electronic devices.

[0123] Exemplarily, the electrical connector 50 is a plug-in connector or a magnetic electrical transmission connector. The plug-in connector and the magnetic electrical transmission connector respectively achieve electrical connection between the electronic structure within the folding bracket 1 and the external electronic device via plug-in and magnetic wireless transmission methods. Exemplarily, the electrical connector 50 in this embodiment is a plug-in connector.

[0124] Referring to Figures 2 and 3, this embodiment also provides a foldable projector, which includes a projection module 2 and a folding bracket 1 as described in any of the above embodiments. The projection module 2 is detachably connected to the folding bracket 1. The use of the folding bracket 1 enables the height and angle of the electronic device to be adjusted, improving its adaptability. Furthermore, the folding bracket 1 is detachably connected to the electronic device, allowing for separate storage or fixed connection, greatly improving its volume utilization and storage efficiency, and enhancing the portability of the foldable projector.

[0125] Because of the use of the aforementioned folding bracket 1, this foldable projector has the same beneficial effects as the folding bracket 1, such as being foldable, easy to store, and having a high volume utilization rate. At the same time, the detachable connection design between the projection module 2 and the folding bracket 1 enhances the overall portability and flexibility of the device.

[0126] The audio module 30 and battery module 40 can be integrated into the projection module 2 (as shown in Figure 3) or they can be installed in the folding bracket 1. In this embodiment, the audio module 30 and battery module 40 can be integrated into the folding bracket 1 to improve the heat dissipation of the foldable projector.

[0127] For example, the projection module 2 includes a projection housing, an optical engine assembly 220, and an optical engine driver board assembly 230. Both the optical engine assembly 220 and the optical engine driver board assembly 230 are housed within the projection housing. The projection housing includes an upper cover 2101 and a lower cover 2102, which are fastened together to protect the optical engine assembly 220 and the optical engine driver board assembly 230. The optical engine assembly 220 is configured to perform projection, and the optical engine driver board assembly 230 is configured to control the operation of the optical engine assembly 220. The structures of both the optical engine assembly 220 and the optical engine driver board assembly 230 can use structures commonly used in the projector field. Furthermore, the projection module 2 typically includes a heat sink, such as a cooling fan or heat sink fins, as long as the heat sink structure is compact and meets heat dissipation requirements.

[0128] In some embodiments, the projection module 2 further includes a docking member 240, which is configured to be electrically connected to the electrical connector 50 to realize the electrical connection between the projection module 2 and the electronic structure within the folding bracket 1.

[0129] Referring to Figures 8 to 10, this embodiment also provides a folding bracket and a folding projector. The difference between this embodiment and the embodiments shown in Figures 1 to 3 is that the folding bracket 1 in this embodiment has three folding members 10 and two corresponding pivot components 20, achieving a three-fold effect. Exemplarily, from the projection module 2 to the side furthest from the projection module 2, a first folding member, a second folding member, and a third folding member are respectively provided. The first folding member is used to mount the projection module 2. Both ends of the second folding member are provided with pivot components 20 to achieve a folding effect between the two ends of the second folding member and the first and third folding members, respectively. The third folding member is configured to support the projection module 2 on an external desktop or other load-bearing surface.

[0130] In other embodiments, the number of folding members 10 can also be four, five, etc., to achieve the effect of four-fold or five-fold folding. The number of folding members 10 can be adaptively changed according to actual needs.

[0131] In some embodiments, the pivot component 20 in this embodiment may also adopt the pivot mechanism in Embodiment 3 of this application. When using this pivot mechanism, the rotational connection between adjacent folding parts 10 can be achieved by means of the rotational engagement structure between the first pivot connector 301 and the second pivot connector 302. At the same time, the suspension structure (such as a friction damping element) of the pivot mechanism provides a locking force, so that the adjacent folding parts 10 rotate relative to each other to a preset angle and then remain stably suspended. The supporting posture can be maintained without the need for an additional locking structure, which improves the angle controllability and operation convenience of the folding bracket 1 and adapts to the support needs of electronic devices in different usage scenarios.

[0132] In some embodiments, the high-density electronic device multi-hotspot heat dissipation structure of Embodiment 4 of this application can be provided in the foldable projector of this embodiment. For example, the heat dissipation structure can be integrated into the projection housing of the projection module 2 to adapt to the multi-hotspot heat dissipation requirements of heat-generating components such as the optical engine assembly 220 and the optical engine drive board assembly 230 in the projection module 2; or, according to the heat generation of the audio module 30 and the battery module 40 in the folding bracket 1, the heat dissipation structure can be adapted and disposed in the cavity of the folding member 10, and the heat dissipation channel 413 of the heat dissipation structure can be thermally connected to the audio module 30 and the battery module 40 in the folding bracket 1, and the fluid guiding component 402 can be used to achieve efficient heat dissipation, so as to avoid the heat accumulation of heat-generating components from affecting the operating stability and service life of the foldable projector.

[0133] Example 2

[0134] Related technologies often use foldable stands to prop up the projector, allowing for adjustments to the projection height and angle to achieve the best projection effect. Furthermore, folding the stand effectively reduces the overall size of the device, making it convenient to carry and store. However, because the optical engine and speaker modules are integrated into one unit, the projector itself is relatively large and heavy, inconvenient to use, and has poor heat dissipation, thus affecting the user experience.

[0135] Referring to Figures 11 to 14, this embodiment provides a foldable projection device, such as a projector or projection display screen. The foldable projection device includes an optical engine module 201, a speaker module 202, and a hinge 203. The optical engine module 201 is the core component of the device, configured to convert image signals into light signals and project them onto the screen. The optical engine module 201 is electrically connected to the speaker module 202, enabling it to input electrical signals into the speaker module 202 and convert them into sound waves. Furthermore, the speaker module 202 is equipped with a speaker opening 2021. After the electrical signals are converted into sound waves within the speaker module 202, the sound waves can diffuse outwards through the speaker opening 2021, thereby providing the user with a basic audio experience. The hinge 203 enables a rotatable connection between the optical engine module 201 and the speaker module 202, allowing them to form a foldable structure.

[0136] The above configuration allows the optical engine module 201 and the speaker module 202 to be set up independently. On one hand, this reduces the weight of the optical engine module 201 and simplifies its internal structure, making it easier to manufacture and use. On the other hand, when the foldable projection device is unfolded, the optical engine module 201 can be positioned further away from the speaker module 202, increasing its heat dissipation surface area and allowing the internal heat dissipation system to effectively cool the heat-generating components within the optical engine module 201. Furthermore, when the foldable projection device is folded, the optical engine module 201 can be fitted snugly to the speaker module 202, further reducing the overall size of the device and making it easier to carry and store.

[0137] For example, in this embodiment, both the optical engine module 201 and the speaker module 202 are square structures. Compared with other shapes such as circles, when the entire device is folded, the square structure of the optical engine module 201 and speaker module 202 can reduce the space occupied. Moreover, when in use, the entire device can be placed in a variety of postures, such as upright or flat, which greatly enhances the flexibility of the entire device.

[0138] In this embodiment, referring to Figures 11 to 13, the horn opening 2021 is disposed on the circumferential sidewall of the horn module 202, so that when the optical engine module 201 and the horn module 202 are folded, the horn opening 2021 can be exposed to the external environment. In this way, when the above-mentioned device needs to achieve the projection requirements with a small volume, the horn opening 2021 can still be fully exposed to the external environment and output audio, thereby reducing the impact of changes in the folding state.

[0139] In this embodiment, multiple speaker ports 2021 are provided on both sides of the speaker module 202. Thus, one speaker port 2021 on one side serves as the "left channel" and the other speaker port 2021 on the other side serves as the "right channel". This arrangement can not only effectively improve the stereo effect, clarity and spatial effect of the audio, giving users a more immersive and realistic sound experience, but also ensure that when the entire device is used in a side-standing position, that is, when one speaker port 2021 is blocked by the desktop, the other speaker port 2021 can still be fully exposed to the external environment, thereby still achieving the effect of transmitting audio outward.

[0140] In other parallel embodiments, referring to Figure 14, the horn opening 2021 can also be located at the end of the horn module 202, i.e., on the normal plane of the horn module 202, so that when the optical engine module 201 and the horn module 202 are folded, the optical engine module 201 can block the horn opening 2021. With the above arrangement, the user can drive the optical engine module 201 to rotate towards the direction close to the horn module 202 until the optical engine module 201 is close to the end face of the horn module 202. At this point, the sound waves inside the horn module 202 cannot be emitted outward, and the entire device enters a silent state, thereby meeting the need for the device to achieve silence in a short time and ensuring the user's privacy.

[0141] In some embodiments, multiple speaker openings 2021 are provided on both sides of the end of the speaker module 202, thereby enabling the use of dual-channel sound playback to enhance the spatial stereo effect.

[0142] Optionally, in this embodiment, the hinge 203 includes a rotating block and a rotating shaft. The first end of the rotating block is connected to the optomechanical module 201, and the second end of the rotating block is rotatably connected to the speaker module 202 through the rotating shaft, thereby realizing a flexible connection between the optomechanical module 201 and the speaker module 202. Moreover, the hinge 203 has a simple structure and can realize a compact design of the optomechanical module 201 and the speaker module 202, thereby saving the installation space of the equipment.

[0143] For example, the foldable projection device provided in this embodiment also includes a power supply module 204, which is electrically connected to the speaker module 202 and the optical engine module 201 to enable the speaker module 202 and the optical engine module 201 to operate normally. Furthermore, this embodiment provides two hinges 203. The power supply module 204 is hinged to the speaker module 202 via one hinge 203, and the optical engine module 201 is hinged to the speaker module 202 via the other hinge 203, so that the optical engine module 201, speaker module 202, and power supply module 204 are connected together to form a three-fold foldable structure. Through the above configuration, the adjustable angle of the optical engine module 201 in this foldable projection device is more comprehensive, and the adjustable height is greater, thereby improving the flexibility of use. Furthermore, since the power supply module 204 is set independently of the optical engine module 201, the power supply module 204 can reduce the impact on the heat dissipation of the optical engine module 201. Compared with traditional projectors, the size of the optical engine module 201 can be reduced, thereby improving ease of use and safety.

[0144] In other parallel embodiments, the speaker module 202 has speaker openings 2021 at both ends, thereby increasing the number of sound wave output channels, resulting in a brighter output sound and a wider adjustable range. When folded, the optomechanical module 201 and the power supply module 204 can respectively block the speaker openings 2021 at both ends of the speaker module 202, thus blocking all speaker openings 2021.

[0145] In some embodiments, the power supply module 204 is a battery pack, which enables the power supply module 204 to independently supply power to the optical engine module 201 and the speaker module 202, eliminating the need for an external power source, thereby improving the portability and battery life of the entire folding projection device.

[0146] Because of its heavy weight, the power supply module 204 can be supported on a table as a stand for the entire device when the power supply module 204 and the optical engine module 201 are respectively located on both sides of the speaker module 202. This ensures that the entire device is not easily tipped over and guarantees its stability during use. Furthermore, it allows the optical engine module 201 to be adjusted within a wider range of angles and heights to achieve the best projection effect.

[0147] In this embodiment, the thickness of the speaker module 202 is less than that of the power supply module 204 and the optomechanical module 201. This helps to reduce the weight of the entire device, making it lighter and more compact, and also reduces the space occupied by the device when folded.

[0148] This embodiment provides a folding projection device, which differs from the embodiments shown in Figures 11 to 14 in that the power supply module 204 is fixedly mounted on the speaker module 202 at one end away from the optical engine module 201, thereby enabling the folding projection device to form a projection device with two folds. This configuration eliminates the need for a hinge 203, thus reducing the overall weight of the device and enhancing ease of operation. It is well-suited for simple usage scenarios, such as home use and business meetings. It is understood that, while controlling the overall weight, the speaker module 202 and the power supply module 204 can be fixed using methods such as gluing or welding.

[0149] In some embodiments, the hinge 203 in this embodiment can also be the pivot assembly 20 in Embodiment 1 or the pivot mechanism in Embodiment 3. When the pivot assembly 20 in Embodiment 1 is used, the rotational connection and angle limitation between the optomechanical module 201, the speaker module 202, and the power supply module 204 can be realized by the cooperation structure between its pivot shaft 22 and the rotation groove 101, and by the abutting action between the first limiting part 11 of the groove wall of the rotation groove 101 and the second limiting part 221 on the outer periphery of the pivot shaft 22. When the pivot mechanism in Embodiment 3 is used, the locking force of its suspension structure (such as a friction damping element) can be used to make the adjacent modules (optomechanical module 201 and speaker module 202, speaker module 202 and power supply module 204) rotate relative to each other to a preset angle and then be stably suspended, thereby improving the angle controllability and operation convenience during the use of the equipment.

[0150] In some embodiments, the high-density electronic device multi-hotspot heat dissipation structure of Embodiment 4 of this application can be set in the foldable projection device of this embodiment. Considering that the optical engine module 201 and the power supply module 204 are the main heat-generating components of the device, the heat dissipation structure can be integrated to adapt to the overall layout of the device. By opening heat dissipation channels 413 on the inner wall of the housing 401 of the heat dissipation structure corresponding to the installation positions of the optical engine module 201 and the power supply module 204, each heat dissipation channel 413 can be precisely connected to the heat-generating hotspot of the corresponding heat-generating component. Each heat dissipation channel 413 is connected to the flow collection channel 414, and the fluid guiding component 402 in the flow collection channel 414 accelerates the flow of heat-conducting fluid to achieve simultaneous and efficient cooling of multiple hotspots. If the speaker module 202 has a heat-generating requirement, a corresponding heat dissipation channel 413 can also be added in the housing 401 to connect to the speaker module 202, ensuring that each heat-generating component of the foldable projection device can be effectively cooled, ensuring the stability of the device during long-term operation, and improving the user experience.

[0151] Example 3

[0152] Foldable devices in related technologies typically include an unfolded state and a folded state. In the folded state, they achieve a smaller size, making them easy for users to store and carry. In the unfolded state, foldable devices can display a larger screen area, enhancing the visual experience. However, during the transition from unfolded to folded or vice versa, the device may suddenly retract or continue unfolding, causing inconvenience for users.

[0153] Referring to Figures 15 and 16, this embodiment provides a pivoting mechanism, including a first pivoting connector 301, a second pivoting connector 302, and a hovering structure. The first pivoting connector 301 includes a pivot member, which is rotatably connected to the second pivoting connector 302. The pivot member is provided with a hovering structure. When the first pivoting connector 301 and the second pivoting connector 302 rotate relative to each other to a preset angle, the hovering structure can provide a locking force to make the first pivoting connector 301 and the second pivoting connector 302 hover at the preset angle.

[0154] One embodiment of this invention, as shown in Figures 16, 17, and 20, uses a pivot 311 as the pivot member. A rotating hole 3201 is provided on the second pivot connector 302. The first end of the pivot 311 is rotatably inserted into the rotating hole 3201. When the pivot 311 rotates, it drives the first pivot connector 301 to rotate relative to the second pivot connector 302. By using a pivot 311, the rotation of the pivot member is more stable and reliable, and the structure of the pivot member is effectively simplified, making the connection between the pivot member and the second pivot connector 302 more stable and durable. Furthermore, the aforementioned hovering structure is provided at the first end of the pivot 311, allowing the pivot 311 to stop rotating when it reaches a preset angle, thereby keeping the second pivot connector 302 in a hovered state.

[0155] In one embodiment, the hovering structure is a friction damping component, such as a friction ring, friction plate, or friction pad. When the pivot 311 rotates, the friction damping component provides rotational resistance to the pivot 311 and the second pivot connector 302. This ensures that after the second pivot connector 302 rotates a certain angle relative to the pivot 311, it will not automatically rotate around the pivot 311 without external force, but will remain stably hovered at the rotated angle. This configuration allows the first pivot connector 301 and the second pivot connector 302 to remain hovered at any rotation angle, enhancing controllability and facilitating operation and use. Furthermore, when the hovering structure uses a friction damping component, it can provide better damping feel for the first pivot connector 301 and the second pivot connector 302 without increasing installation space, thereby improving the user experience.

[0156] For example, in this embodiment, referring to FIG17, the first pivot connector 301 further includes a pivot seat 312 and a locking member 313. The pivot seat 312 is configured to be fixedly connected to the first rotating body, for example by a threaded connection, so as to facilitate disassembly and assembly. An installation hole 3121 is provided at the end of the pivot seat 312. The second end of the pivot 311 is inserted into the installation hole 3121 and is fixedly connected to the pivot seat 312 by the locking member 313, so that the pivot 311 can achieve a stable transmission connection with the first rotating body through the pivot seat 312.

[0157] In one embodiment of this invention, as shown in Figure 18, the locking member 313 is designed with a threaded structure. Two opposing slots 3211 are formed on the sidewall of the mounting hole 3121. One slot 3211 penetrates the outer surface of the pivot seat 312, while the other slot 3211 has an internal thread and a through hole 3111 is formed at the second end of the pivot 311. After the second end of the pivot 311 is inserted into the mounting hole 3121, the through hole 3111 is concentrically aligned with the two slots 3211. The locking member 313 can be a threaded structure such as a screw or bolt. During assembly, the threaded section of the locking member 313 passes sequentially through one slot 3211 and the through hole 3111 before being threadedly connected to the other slot 3211. This method not only improves the connection strength between the pivot 311 and the pivot seat 312 but also facilitates the assembly and disassembly of the pivot seat 312 and the pivot 311. For example, each end of the pivot seat 312 is provided with a mounting hole 3121, and there are two pivots 311 and two second pivot connectors 302 to meet the requirements of actual working conditions.

[0158] For example, the pivot seat 312 is also provided with a wire hole 3122. The wire hole 3122 is configured to pass through and constrain the conductive wire harness, so that when the pivot mechanism is applied to an electronic device, the connecting wire harness on the electronic device can be constrained and organized through the wire hole 3122, thereby avoiding the situation of the conductive wire harness being scattered, ensuring safety and improving aesthetics.

[0159] In this embodiment, referring to Figures 19 and 20, the second pivot connector 302 is an integrally formed structure, including a flat pivot fixing part 321 and an annular sleeve part 322. The pivot fixing part 321 is provided with a fixing hole 3210 for fixed connection with the second rotating body by fasteners; the sleeve part 322 is provided with a rotating hole 3201, and the sleeve part 322 is wound around the outer surface of the pivot 311 to achieve a stable fit with the pivot 311. During assembly, the pivot fixing part 321 and the sleeve part 322 can be machined first, and then the sleeve part 322 can be sleeved on the first end of the pivot 311. Alternatively, the second pivot connector 302 with the sleeve part 322 can be attached to the first end of the pivot 311 first, and then the second pivot connector 302 can be bent by machining equipment to form the sleeve part 322 wrapped around the pivot 311.

[0160] For example, the second pivot connector 302 also includes a reinforcing rib 323, which is fixedly connected between the pivot fixing part 321 and the sleeve part 322 to increase the structural strength of the sleeve part 322 and the pivot fixing part 321, and prevent them from being subjected to excessive deformation due to the rotational torque of the pivot 311 during rotation, thereby improving the service durability of the second pivot connector 302.

[0161] Optionally, in this embodiment, an angle limiting structure is further provided between the pivot member and the second pivot connector 302. The angle limiting structure is configured such that when the first pivot connector 301 and the second pivot connector 302 rotate relative to each other, the pivot member is limited by the angle limiting structure, thereby limiting the axial rotation stroke of the first pivot connector 301. Through the above configuration, the angle limiting structure can effectively control the rotation angle of the first pivot connector 301 and the second pivot connector 302, preventing excessive rotation or excessively large rotation angles, thereby helping to improve the safety of the pivoting mechanism.

[0162] For example, as shown in Figures 20 and 21, the angle limiting structure includes a limiting block 331 and a stop block 332. In one embodiment, the second pivot connector 302 has a limiting block 331 protruding from the opening of the pivot hole 3201, and a semi-circular stop block 332 protruding circumferentially from the outer side wall of the second end of the pivot 311. When the first end of the pivot 311 is inserted into the pivot hole 3201, the side wall of the stop block 332 can abut against the opening of the pivot hole 3201 where the limiting block 331 is not provided. At this time, the stop block 332 is in a position along the axial direction that can abut against the limiting block 331 when the pivot 311 rotates. When the pivot 311 rotates relative to the sleeve part 322 to the maximum preset angle, the limiting block 331 can stop in time against the stop block 332, so that the pivot 311 can stop rotating immediately. This method is not only simple to implement, but also stable and reliable.

[0163] In some embodiments, the circumferential lengths of the limiting block 331 and the stop block 332 can be adjusted according to actual needs. For example, the longer the circumferential length of the stop block 332, the faster it can abut against the limiting block 331. The shorter the circumferential length of the stop block 332, the larger the rotation angle range of the pivot 311, thereby facilitating the adjustment of the rotation angle range.

[0164] This embodiment provides a foldable device. If the foldable device has a double-folding structure, it includes a first rotating body, a second rotating body, and a pivoting mechanism as described in any of the above embodiments. The first rotating body is connected to a first pivoting connector 301 of the pivoting mechanism, and the second rotating body is connected to a second pivoting connector 302 of the pivoting mechanism, so that the first and second rotating bodies are connected to form a foldable structure. Because the pivoting mechanism is equipped with a hovering structure, the first and second rotating bodies can stably remain at any predetermined angle during the transition from an unfolded state to a folded state or vice versa, preventing the device from suddenly retracting or continuing to unfold, thus providing convenience for the user.

[0165] When the aforementioned folding device has a three-fold structure or more folded sections, the pivoting mechanism is also applicable. For example, in a three-fold structure, a pivoting mechanism can be added so that the first and second rotating bodies, as well as the second and third rotating bodies, are rotatably connected via the pivoting mechanism. This allows the folding device to achieve more usage configurations, meeting diverse application needs. Therefore, this application does not limit the number of folding sections of the folding device; only appropriate pivoting mechanisms need to be added according to actual requirements.

[0166] In some embodiments, the first rotating body, the second rotating body, and the third rotating body in this embodiment may correspond to the first folding component, the second folding component, and the third folding component in Embodiment 1 of this application, respectively, or they may correspond to the optomechanical module 201, the speaker module 202, and the power supply module 204 in Embodiment 2 of this application, so as to adapt to the folding structure design requirements under different application scenarios.

[0167] Example 4

[0168] Most projectors on the market currently use cooling fans for heat dissipation. The cooling fan, optical engine projection module, and electronic control board are integrated into the same housing. Vents are located on the housing, connecting to the gaps between the cooling fan, the optical engine projection module, and the various components on the electronic control board. This allows the cooling fan to dissipate heat from inside the housing through these heat dissipation paths. However, this cooling method is ineffective. The narrow heat dissipation paths mean that when a large amount of heat is generated inside the housing, it is difficult to quickly and effectively dissipate most of the heat, thus affecting the projector's performance.

[0169] Referring to Figures 22 to 27, this embodiment provides a heat dissipation structure for high-density electronic devices with multiple hot spots, used to achieve rapid heat dissipation of multiple hot spots inside electronic devices with high integration density. It can be understood that "multiple hot spots" in this application refers to multiple heat-generating components installed inside the electronic device. The heat dissipation structure includes a housing 401 and a fluid guiding component 402. The housing 401 has a cavity configured to accommodate the fluid guiding component 402 and multiple heat-generating components. The surface of the housing 401 is provided with a fluid inlet 411 and a fluid outlet 412. The inner wall of the cavity is provided with multiple heat dissipation grooves 413, which are thermally connected to the heat-generating components one by one, and the two ends of each heat dissipation groove 413 are respectively connected to the fluid inlet 411 and the fluid outlet 412. The fluid guiding component 402 is disposed on the heat dissipation path of the heat dissipation groove 413.

[0170] With the above configuration, when multiple heat-generating components operate simultaneously and generate a large amount of heat, the heat-conducting fluid can enter the heat dissipation channel 413 from the fluid inlet 411 under the action of the fluid guide 402. This absorbs the heat generated by the multiple heat-generating components, and through the drive of the fluid guide 402 and the guidance of the heat dissipation channel 413, the heat-conducting fluid can flow efficiently, dissipating the heat from the fluid outlet 412. Furthermore, by creating slots inside the housing 401 to dissipate heat outwards, heat dissipation and rapid cooling of multiple hot spots can be achieved precisely, quickly, and effectively without adding additional heat dissipation structures, increasing the weight and volume of high-density electronic devices, or changing the original layout of multiple internal heat-generating components. This improves the performance and safety stability of high-density electronic devices while also reducing production costs and manufacturing difficulty.

[0171] In this embodiment, a projector will be used as an example to illustrate the heat dissipation structure for multiple hot spots in high-density electronic devices.

[0172] The projector in this embodiment includes an optical engine module (unlike the independent optical engine module 201 in Embodiment 2, the optical engine module in this embodiment is a heat dissipation carrier integrating multiple components). The optical engine module mainly consists of three parts: a projection component 100, a main control component 200, and a heat sink. The projection component 100, main control component 200, and heat sink are all integrated and installed within the housing 401 of the optical engine module. The projection component 100 includes components such as a light source, an optical lens, and a light engine. The main control component 200 includes components responsible for signal processing and control, such as a main control circuit board and a flexible printed circuit board (FPC). Therefore, the optical engine module mainly contains two heat-generating components: the projection component 100 and the main control component 200. The heat sink effectively dissipates heat from the projection component 100 and the main control component 200, ensuring the normal operating temperature of the optical engine module. Its function is the same as that of the fluid guiding component 402. Thus, the optical engine module of this projector can be used as an example of a high-density electronic device to illustrate the heat dissipation structure provided in this embodiment.

[0173] In some embodiments, the fluid guiding component 402 is a cooling fan, and the corresponding heat-conducting fluid is air. The cooling fan generates airflow through high-speed rotation, which can effectively accelerate the flow of the heat-conducting fluid within the heat dissipation channel 413, thereby helping to improve heat dissipation efficiency. At the same time, the cooling fan is compact in size and reliable in operation, achieving excellent heat dissipation effect without occupying too much internal cavity space and weight.

[0174] In this embodiment, heat dissipation channels 413 are formed at the bottom of the housing 401, and a collection channel 414 is also formed at the bottom of the housing 401. The collection channel 414 connects the heat dissipation channels 413 and the fluid outlet 412, and the aforementioned fluid guiding component 402 is provided in the collection channel 414, thereby realizing unified control of multiple heat dissipation channels 413 by the fluid guiding component 402. When the fluid guiding component 402 is activated, the heat-conducting fluid can be collected in the collection channel 414 through multiple heat dissipation channels 413, so that the fluid guiding component 402 can quickly and effectively conduct the heat in multiple heat dissipation channels 413 from the fluid outlet 412, ensuring efficient heat dissipation. In addition, the design of the collection channel 414 avoids heat backflow and improves the stability and reliability of the heat dissipation effect.

[0175] In some embodiments, referring to FIG24, the cross-section of the heat collection channel 414 is circular. The circular design helps to reduce the flow resistance of the heat-conducting fluid and increase the flow rate, thereby preventing heat from accumulating in the heat collection channel 414 and ensuring efficient heat dissipation.

[0176] For example, in this embodiment, as shown in Figures 23 and 24, the housing 401 has a square structure. The fluid inlet 411 and the fluid outlet 412 are disposed opposite to each other on the two side surfaces of the housing 401. The projection component 100, the main control component 200 and the fluid guide component 402 are disposed close to each other inside the housing 401. The main control component 200 is disposed close to the fluid inlet 411, and the projection component 100 and the fluid guide component 402 are disposed close to the fluid outlet 412. The two are arranged side by side, so that the collection groove 414 is located at one corner of the housing 401. Furthermore, multiple heat dissipation channels 413 are arranged in a star-shaped pattern within the cavity, allowing some channels 413 to precisely connect to the main control component 200 and the remaining channels 413 to precisely connect to the projection component 100, thus achieving precise heat conduction to both the main control component 200 and the projection component 100. A flow guide gap 4101 exists between the side of the housing 401 without the fluid inlet 411 and the projection component 100, connecting the fluid inlet 411 and the remaining heat dissipation channels 413. This arrangement allows the heat-conducting fluid to be diverted after entering the cavity through the fluid inlet 411. A portion of the fluid can directly enter the heat dissipation channels 413 to absorb heat dissipated from the main control component 200, while another portion can enter the remaining heat dissipation channels 413 through the flow guide gap 4101 to absorb heat dissipated from the projection component 100. This achieves efficient heat dissipation for multiple heat-generating components, meeting the heat dissipation requirements of other high-density electronic devices with similar internal component arrangements to this optical engine module.

[0177] In other embodiments, the layout of the current collection channel 414 and the heat dissipation channel 413 can be adjusted according to the distribution of the internal components of the housing 401 to meet the heat dissipation requirements of different types of high-density electronic devices. As long as each heat-generating component can be effectively cooled, it is within the protection scope of this application.

[0178] To improve heat dissipation efficiency, in other parallel embodiments, the bottom of the heat dissipation channel 413 is provided with an inclined angle between it and the bottom surface of the housing 401, so that the bottom of the heat dissipation channel 413 forms an inclined surface. By forming the bottom of the heat dissipation channel 413 into an inclined surface, the heat-conducting fluid can be guided to flow more smoothly to the collection channel 414, reducing flow dead angles and improving heat dissipation efficiency.

[0179] For example, referring to Figures 26 and 27, taking one of the heat dissipation channels 413 as an example, the thickness of the inner wall of the cavity is set to H, the depth of the end of the heat dissipation channel 413 facing the fluid inlet 411 is set to h1, A=h1 / H, and A satisfies: 0.3≤A<0.5; the depth of the end of the heat dissipation channel 413 facing the collection channel 414 is set to h2, B=h2 / H, and B satisfies: 0.5<B≤0.7.

[0180] For example, A can be 0.3, 0.35, 0.4, or 0.45, and B can be 0.6, 0.65, 0.7, or 0.75. If A is less than 0.3, the depth of the heat dissipation channel 413 will be insufficient, affecting the flow efficiency of the heat transfer fluid; if B is greater than 0.7, the heat dissipation channel 413 may be excessively deep, increasing flow resistance, reducing heat dissipation effect, and also affecting the structural strength of the housing 401. For example, A is 0.3 and B is 0.7. This ratio design achieves a better heat dissipation effect while avoiding the phenomenon of the housing 401 being weak at the heat dissipation channel 413, ensuring the stability of the housing 401 in use.

[0181] In this embodiment, since the main control component 200 occupies a larger space in the housing 401 and has more heat-generating components than the projection component 100, the number of heat dissipation channels 413 for the main control component 200 will be increased accordingly, and the flow guiding cross-sectional area of ​​the heat dissipation channels 413 will also be increased accordingly.

[0182] For example, in this embodiment, referring to FIG24, there are three heat dissipation channels 413 for heat dissipation of the main control component 200, and one heat dissipation channel 413 for heat dissipation of the projection component 100. Among the three heat dissipation channels 413 for the main control component 200, for example, two heat dissipation channels 413 have a larger flow cross-sectional area, and the other heat dissipation channel 413 has a smaller flow cross-sectional area. In order to avoid the reduction of the structural strength of the bottom of the housing 401, one embodiment is to branch the two heat dissipation channels 413 with larger flow cross-sectional areas, so that each heat dissipation channel 413 includes at least two branch channels 4131. The design of the branch channels 4131 ensures that the heat dissipation channel 413 not only does not reduce the heat dissipation performance of the main control component 200, but also forms a protrusion between the branch channels 4131 to ensure that the bottom of the housing 401 has sufficient structural strength, thereby maintaining the stability and durability of the overall structure of the housing 401.

[0183] In this embodiment, the heat dissipation channel 413 used for heat dissipation of the projection component 100 is also branched to ensure the structural strength of the housing 401 located at the position of the projection component 100.

[0184] In some embodiments, the width of the branch channels 4131 is the same to ensure that the flow rate of the heat-conducting fluid in each branch channel 4131 is uniform and to avoid local overheating.

[0185] Optionally, in this embodiment, a plurality of connecting posts 403 are also provided protruding upward from the bottom of the cavity. The connecting posts 403 have threaded holes inside. The heating component is connected to the connecting posts 403 by threaded connectors. This threaded connection method not only ensures that the heating component is installed firmly, but also does not hinder the flow of heat-conducting fluid in the heat dissipation channel 413, thereby improving the heat dissipation efficiency.

[0186] This embodiment also provides an electro-optical device. Taking the aforementioned projector as an example, the projector includes not only an optical engine module but also an auxiliary structure connected to the optical engine module. This auxiliary structure may include a support frame for fixing the optical engine module and a speaker module for transmitting sound outwards, providing a stable placement and a good sound output environment for the optical engine module. Because the electro-optical device incorporates the aforementioned heat dissipation structure for high-density electronic components with multiple hotspots, the heat dissipation channels 413 within the heat dissipation structure ensure that the electro-optical device does not increase the overall weight or size of the device. Furthermore, it achieves precise and efficient heat dissipation for the high-density electronic components, thereby helping the device maintain stable performance during long-term operation, extending its service life, and improving the user experience.

[0187] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A folding bracket configured to support an electronic device, the folding bracket (1) comprising at least two folding members (10) and at least one pivot assembly (20), two adjacent folding members (10) being rotatably connected via the pivot assembly (20) to make the folding bracket (1) foldable; either of the two outer folding members (10) is provided with a fixing portion configured to be detachably connected to the electronic device.

2. The folding bracket according to claim 1, wherein, The fixing part is provided with a magnetic suction component, a fixing buckle or a fixing thread, so that the folding bracket (1) and the electronic device are magnetically connected, snapped or threadedly connected.

3. The folding bracket according to claim 1, wherein, One of the two adjacent folding pieces (10) is provided with a rotating groove (101), and the other is provided with a pivot assembly (20), the pivot assembly (20) being rotatably connected to the rotating groove (101).

4. The folding bracket according to claim 3, wherein, The pivot assembly (20) includes a rotating seat (21) and two pivot shafts (22). The rotating seat (21) is disposed on the folding member (10). Each of the two opposite ends of the rotating seat (21) is provided with a pivot shaft (22). The pivot shafts (22) are rotatably connected to the rotating groove (101).

5. The folding bracket according to claim 4, wherein, The groove wall of the rotating groove (101) is provided with a first limiting part (11), and the outer periphery of the pivot shaft (22) is provided with a second limiting part (221). The first limiting part (11) and the second limiting part (221) are configured to be able to move closer to each other or further away from each other, so as to limit the rotation angle of the two adjacent folding pieces (10).

6. The folding bracket according to any one of claims 1-5, further comprising at least one of the audio module (30) and the battery module (40); When the folding bracket (1) includes an audio module (30), the audio module (30) is disposed within any of the folding members (10) and is capable of external electrical connection; When the folding bracket (1) includes a battery module (40), the battery module (40) is disposed within any of the folding members (10) and is capable of external power connection; When the folding bracket (1) includes an audio module (30) and a battery module (40), the audio module (30) is disposed within any of the folding members (10), the battery module (40) is disposed within any of the folding members (10), the battery module (40) is electrically connected to the audio module (30), and at least one of the audio module (30) and the battery module (40) is capable of external electrical connection.

7. The folding bracket according to claim 6, wherein, The folding member (10) is also provided with an electrical connector (50), which is configured to enable external electrical connection of at least one of the audio module (30) and the battery module (40).

8. The folding bracket according to claim 7, wherein, The electrical connector (50) is a plug-in connector or a magnetic electrical transmission component.

9. The folding bracket according to claim 6, wherein, The pivot assembly (20) has a wiring channel (211) in which an electrical connection wire is provided. The electrical connection wire is configured to electrically connect the battery module (40) to the audio module (30), or to electrically connect at least one of the battery module (40) and the audio module (30) to the outside.

10. A foldable projector, comprising a projection module (2) and a foldable bracket (1) according to any one of claims 1-9, wherein the projection module (2) is detachably connected to the foldable bracket (1).

11. A foldable projection device, comprising an optical engine module (201), a speaker module (202), and a hinge (203), wherein the optical engine module (201) is electrically connected to the speaker module (202) and is rotatably connected to the speaker module (202) via the hinge (203), so that the optical engine module (201) and the speaker module (202) constitute a foldable structure.

12. The folding projection device according to claim 11, wherein, The speaker module (202) is provided with a horn opening (2021), which is located on the circumferential sidewall of the speaker module (202) so that the horn opening (2021) can be exposed to the external environment after the optomechanical module (201) and the speaker module (202) are folded.

13. The folding projection device according to claim 12, wherein, The speaker module (202) has multiple speaker openings (2021) on both sides.

14. The folding projection device according to claim 11, wherein, The speaker module (202) is provided with a horn opening (2021), which is located at the end of the speaker module (202) so that when the optical engine module (201) and the speaker module (202) are folded, the optical engine module (201) can block the horn opening (2021).

15. The folding projection device according to claim 14, wherein, The horn module (202) has multiple horn openings (2021) on both sides of its end.

16. The folding projection device according to claim 11 further includes a power supply module (204), which is electrically connected to the speaker module (202) and the optical engine module (201); two hinges (203) are provided, and the power supply module (204) is hinged to the speaker module (202) through one of the hinges (203), so that the optical engine module (201), the speaker module (202) and the power supply module (204) together constitute a foldable structure.

17. The folding projection device according to claim 16, wherein, The speaker module (202) has a speaker opening (2021) at each of its opposite ends, so that when the power supply module (204), the optical engine module (201) and the speaker module (202) are folded, the optical engine module (201) and the power supply module (204) can block the speaker openings (2021) located at both ends of the speaker module (202).

18. The folding projection device according to claim 16, wherein, The thickness of the speaker module (202) is less than the thickness of the power supply module (204) and the optomechanical module (201).

19. The folding projection device according to claim 11 further includes a power supply module (204), which is fixedly disposed on the speaker module (202) at one end away from the optical engine module (201) and electrically connected to the speaker module (202) and the optical engine module (201).

20. The folding projection device according to claim 16 or 19, wherein, The power supply module (204) is a battery pack.

21. A pivoting mechanism, comprising: The system comprises a first pivot connector (301), a second pivot connector (302), and a hovering structure. The first pivot connector (301) includes a pivot member and is rotatably connected to the second pivot connector (302) via the pivot member. The hovering structure is provided on the pivot member. The hovering structure is configured to provide a locking force when the first pivot connector (301) and the second pivot connector (302) rotate relative to each other to a preset angle, so that the first pivot connector (301) and the second pivot connector (302) hover at the preset angle.

22. The pivoting mechanism according to claim 21, wherein, The second pivot connector (302) has a pivot hole (3201), the pivot is a pivot (311), the first end of the pivot (311) is rotatably inserted into the pivot hole (3201), and the first end of the pivot (311) is provided with the hovering structure.

23. The pivoting mechanism according to claim 22, wherein, The hovering structure is a friction damping element, which is sandwiched between the first end of the pivot (311) and the inner wall of the rotating hole (3201) to provide rotational friction for the pivot (311) and the second pivot connector (302).

24. The pivoting mechanism according to claim 21, wherein, An angle limiting structure is provided between the pivot member and the second pivot connector (302). When the first pivot connector (301) and the second pivot connector (302) rotate relative to each other, the pivot member is limited by the angle limiting structure, so that the first pivot connector (301) achieves axial rotation stroke limitation.

25. The pivoting mechanism according to claim 24, wherein, The angle limiting structure includes a limiting block (331) and a stop block (332). The second pivot connector (302) is provided with the limiting block (331) protruding out, and the pivot connector is provided with the stop block (332) protruding out. When the first pivot connector (301) and the second pivot connector (302) rotate relative to each other to the maximum preset angle, the stop block (332) can rotate to abut against the limiting block (331).

26. The pivoting mechanism according to claim 22, wherein, The first pivot connector (301) includes a pivot seat (312) and a locking member (313). The pivot seat (312) is configured to be fixedly connected to the first rotating body and has a mounting hole (3121). The second end of the pivot (311) is inserted into the mounting hole (3121) and fixedly connected to the pivot seat (312) by the locking member (313).

27. The pivoting mechanism according to claim 26, wherein, The pivot seat (312) is also provided with a wire hole (3122), which is configured to pass through and constrain the conductive wire bundle.

28. The pivoting mechanism according to claim 22, wherein, Part of the second pivot connector (302) is configured as a pivot fixing part (321), which is configured to fix the second rotating body, and the other part of the second pivot connector (302) is configured as a sleeve part (322) wrapped around the outer surface of the pivot (311).

29. The pivoting mechanism according to claim 28, wherein, The second pivot connector (302) further includes a reinforcing rib (323), which is fixedly connected between the pivot fixing part (321) and the sleeve part (322).

30. A foldable device comprising a first rotating body, a second rotating body, and a pivoting mechanism as described in any one of claims 21-29, wherein a first pivoting connector (301) of the pivoting mechanism is connected to the first rotating body, and a second pivoting connector (302) of the pivoting mechanism is connected to the second rotating body, such that the first rotating body and the second rotating body constitute a foldable structure.

31. A heat dissipation structure for high-density electronic devices with multiple hot spots, comprising a housing (401) and a fluid guiding component (402), wherein the housing (401) has a cavity configured to accommodate the fluid guiding component (402) and a plurality of heat-generating components, wherein the surface of the housing (401) is provided with a fluid inlet (411) and a fluid outlet (412), wherein the inner wall of the cavity is provided with a plurality of heat dissipation channels (413), wherein the heat dissipation channels (413) are thermally connected to the corresponding heat-generating components, and both ends of each heat dissipation channel (413) are respectively connected to the fluid inlet (411) and the fluid outlet (412), wherein the fluid guiding component (402) is disposed on the heat dissipation path of the heat dissipation channel (413).

32. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 31, wherein, The inner wall of the cavity is also provided with a flow collection groove (414), which is connected to the fluid outlet (412) and a plurality of heat dissipation channels (413), and the fluid guiding component (402) is provided in the flow collection groove (414).

33. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 32, wherein, The fluid guiding component (402) is a cooling fan.

34. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 32 or 33, wherein, The cross-section of the collection channel (414) is circular.

35. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 34, wherein, The fluid guiding component (402) is a cooling fan. The housing (401) is square. The fluid inlet (411) and the fluid outlet (412) are arranged opposite to each other on both sides of the housing (401). The collecting groove (414) is located at one corner of the housing (401). A plurality of heat dissipation channels (413) are arranged in a star-shaped pattern in the cavity. There is a flow guiding gap (4101) between the side of the housing (401) without the fluid inlet (411) and the heat-generating component. The flow guiding gap (4101) connects the fluid inlet (411) and part of the heat dissipation channels (413).

36. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 34, wherein, At least one of the heat dissipation channels (413) includes at least two branch channels (4131).

37. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 36, wherein, The width dimensions of the branch channels (4131) are the same.

38. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 32, wherein, The bottom of the heat dissipation channel (413) is inclined at an angle to the bottom surface of the housing (401).

39. The heat dissipation structure for high-density electronic devices with multiple hot spots according to claim 38, wherein, The thickness of the inner wall of the cavity is set to H, and the depth of the end of the heat dissipation channel (413) facing the fluid inlet (411) is set to h1. A = h1 / H, and A satisfies: 0.3 ≤ A < 0.5; The depth of the end of the heat dissipation channel (413) facing the collection channel (414) is set to h2, B=h2 / H, and B satisfies: 0.5<B≤0.

7.

40. The heat dissipation structure for high-density electronic devices with multiple hot spots according to any one of claims 31-39, wherein, The inner wall of the cavity is provided with a plurality of connecting posts (403), and the heating component is threadedly connected to the connecting posts (403) through a threaded connector.

41. An electro-optical device, comprising an auxiliary structure and a heat dissipation structure for high-density electronic devices with multiple hot spots as described in any one of claims 31-40, wherein the auxiliary structure is connected to the heat dissipation structure for high-density electronic devices with multiple hot spots.

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