Wireless transmission device for projector

Abstract

The utility model relates to the technical field of wireless transmission devices, in particular to a wireless transmission device for a projector, which comprises a signal transmission module, a heat dissipation adjusting module and an anti-interference module. The signal transmission module is provided with an antenna assembly and a signal enhancement piece, and the signal coverage range is optimized through adjustable angle design; the heat dissipation adjusting module rapidly dissipates heat through the synergistic effect of a cooling fin set and a cooling fan. The anti-interference module uses a shielding cover and a filter to reduce external interference. By means of the structure, the problems that in the prior art, signal stability is poor, heat dissipation is insufficient, and interference is likely to happen are solved, combination of miniaturization design and efficient performance is achieved, the use experience of the projector in the complex environment is improved, and remarkable technical progress and practical value are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of wireless communication and multimedia equipment technology, specifically a wireless transmission device for a projector. Background Technology

[0002] During the use of a projector, the performance of the wireless transmission device directly affects the projection effect and user experience. Currently, some wireless transmission devices based on technologies such as high-definition decoding, COFDM modulation and demodulation have appeared on the market. However, these devices still have limitations in terms of signal stability, miniaturization design, and heat dissipation performance. In particular, they are easily interfered with in complex environments, which can lead to problems such as degraded projection image quality or transmission interruption.

[0003] For example, the Chinese invention patent (publication number: CN108259834B) discloses a "high-definition wireless transmission device with extremely low latency." Its specification states that it implements functions such as high-definition video decoding, COFDM modulation, and demodulation through a hardware processing platform, effectively solving problems such as high system latency, poor integration, large size, and high power consumption. However, this design is mainly aimed at general high-definition wireless transmission scenarios and does not fully consider the actual needs of projectors. For example, projectors have high requirements for the miniaturization and heat dissipation performance of wireless transmission devices, and this solution does not provide targeted optimization, which may limit its applicability in projector application scenarios.

[0004] For example, the Chinese invention patent (publication number: CN110335553B) discloses a "display device and wireless transmission device," which states that wireless transmission is achieved by combining multiple coils with a display unit. While this design can meet the wireless transmission requirements of display devices to some extent, its focus on optimizing the layout of the display unit and coils means that for devices like projectors that require high stability and anti-interference capabilities, it lacks effective solutions for signal interference and transmission distance during wireless transmission, making it difficult to meet the needs of projectors in complex environments.

[0005] The aforementioned problems indicate that current wireless transmission devices on the market are insufficient in terms of signal stability, miniaturization, and heat dissipation, making them unsuitable for the complex environments in which projectors are used. Therefore, this invention provides a wireless transmission device specifically designed for projectors, overcoming the shortcomings of existing technologies and offering a more stable, efficient, and adaptable solution. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of current wireless transmission devices for projectors in terms of signal stability, miniaturization, and heat dissipation, especially the problem that they are easily interfered with in complex environments, leading to a decrease in projected image quality or transmission interruption.

[0007] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a wireless transmission device for a projector, comprising a signal transmission module, a heat dissipation adjustment module, and an anti-interference module. The signal transmission module is externally protected by a protective housing, and the protective housing contains a first mounting cavity for mounting the signal transmission module. A second mounting cavity and a third mounting cavity are respectively located on both sides of the first mounting cavity. The heat dissipation adjustment module is located in the second mounting cavity, and the anti-interference module is located in the third mounting cavity. The signal transmission module is connected to the heat dissipation adjustment module and the anti-interference module via wires to achieve stability and heat dissipation requirements during signal transmission.

[0008] The signal transmission module includes a signal processing unit and an antenna assembly. The signal processing unit is fixed to the bottom of the first mounting cavity and has several signal interfaces on its top. An elastic sealing ring is provided on the outside of each signal interface. The antenna assembly is installed on the top of the signal processing unit by a threaded connection. Multiple adjustable signal enhancement plates are provided on the circumferential side of the antenna assembly. The signal enhancement plates are connected to the antenna assembly through a rotating shaft, and a locking nut is provided at the end of the rotating shaft to fix the angle of the signal enhancement plates.

[0009] As a preferred technical solution of this application, the heat dissipation adjustment module includes a heat sink assembly and a cooling fan. The heat sink assembly is fixed to the bottom of the second mounting cavity, and its top is connected to the cooling fan through a snap-fit ​​structure. The air inlet of the cooling fan faces the first mounting cavity, and the air outlet faces the outside of the protective shell. The surface of the heat sink assembly is provided with multiple parallel heat dissipation fins, and the spacing between adjacent heat dissipation fins is 2-3 mm. The speed of the cooling fan is controlled in real time by the temperature sensor of the signal processing unit.

[0010] As a preferred technical solution of this application, the anti-interference module includes a shield and a filter. The shield is made of metal and has multiple honeycomb-shaped shielding holes inside. The shield is fixed to the bottom of the third mounting cavity by bolts. The filter is connected to the top of the shield by welding. The input end of the filter is connected to the output end of the signal processing unit by wires, and the output end is connected to the input end of the antenna assembly, for filtering the signal to reduce external interference.

[0011] As a preferred technical solution of this application, the top of the protective housing is provided with a sliding groove, the inside of the sliding groove is provided with a sliding block, the bottom of the sliding block is connected to the bottom of the sliding groove by a spring, the top of the sliding block is provided with an adjustment knob, and the outside of the adjustment knob is provided with anti-slip texture, which is used to manually adjust the position of the sliding block, thereby changing the ventilation area of ​​the protective housing.

[0012] As a preferred technical solution of this application, the bottom of the first mounting cavity is provided with a shock-absorbing pad, which is made of rubber material and has a thickness of 5-8 mm. The top of the shock-absorbing pad is provided with multiple protrusions, the height of which is 2-3 mm, for absorbing the vibration generated by the signal transmission module during operation.

[0013] As a preferred technical solution of this application, the outer side of the protective shell is provided with a plurality of heat dissipation holes, which are arranged in a circular manner. The diameter of each heat dissipation hole is 3-5 mm, and the center distance between adjacent heat dissipation holes is 10-15 mm. The interior of the heat dissipation holes is provided with a dustproof mesh to prevent dust from entering the interior of the protective shell.

[0014] As a preferred technical solution of this application, the signal processing unit is provided with an expansion interface on its side. The expansion interface is connected to an external device through a wire to expand the function of the signal transmission module. A waterproof cover is provided on the outside of the expansion interface. The waterproof cover is connected to the side of the signal processing unit through a hinge.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By incorporating a signal transmission module, a heat dissipation adjustment module, and an anti-interference module, the stability of signal transmission is improved in complex environments through antenna components and signal enhancement chips. Simultaneously, the heat sink assembly and cooling fan effectively reduce the operating temperature of the signal transmission module, preventing performance degradation due to overheating. Furthermore, the anti-interference module optimizes signal processing through shielding and filters, reducing the impact of external interference on signal transmission. This invention addresses the shortcomings of existing wireless transmission devices in terms of signal stability, miniaturization, and heat dissipation performance, thereby enhancing the user experience of projectors in complex environments.

[0017] Specifically, the signal transmission module, through the adjustable angle design of the signal enhancement plate, can adjust the signal coverage range according to the actual usage environment, thereby improving the efficiency of signal transmission; the heat dissipation adjustment module, through the synergistic effect of the heat sink assembly and cooling fan, quickly dissipates the heat generated by the signal transmission module, ensuring the long-term stable operation of the device; the anti-interference module, through the combination of shielding cover and filter, effectively reduces the impact of external electromagnetic interference on signal transmission, ensuring that the quality of the projected image is not affected.

[0018] This invention achieves miniaturization of the signal transmission device through the above-mentioned technical means, while taking into account heat dissipation performance and anti-interference ability, meeting the needs of projectors in complex environments, and has significant technical progress and practical value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the signal transmission module.

[0021] Figure 3 This is a partial schematic diagram of the heat dissipation adjustment module;

[0022] Figure 4 This is a schematic diagram of the anti-interference module.

[0023] The attached figures are labeled as follows:

[0024] 1. Protective housing; 2. Signal transmission module; 3. Heat dissipation adjustment module; 4. Anti-interference module; 5. Signal processing unit; 6. Antenna assembly; 7. Signal enhancement plate; 8. Heat sink assembly; 9. Cooling fan; 10. Shielding cover; 11. Filter; 12. Sliding groove; 13. Sliding block; 14. Adjustment knob; 15. Shock-absorbing pad; 16. Heat dissipation holes; 17. Expansion interface. Detailed Implementation

[0025] This utility model provides a wireless transmission device for a projector, the structure of which is as follows: Figure 1 As shown, the device includes a protective housing 1, a signal transmission module 2, a heat dissipation and regulation module 3, and an anti-interference module 4. The protective housing 1 serves as the external frame of the entire device, housing and protecting the internal functional modules. The signal transmission module 2 is located in a first mounting cavity inside the protective housing 1, with a second mounting cavity and a third mounting cavity on either side. The heat dissipation and regulation module 3 is installed in the second mounting cavity, and the anti-interference module 4 is installed in the third mounting cavity. The signal transmission module 2 is connected to the heat dissipation and regulation module 3 and the anti-interference module 4 via wires to ensure stability and meet heat dissipation requirements during signal transmission.

[0026] The specific structure of signal transmission module 2 is as follows: Figure 2As shown, the system includes a signal processing unit 5 and an antenna assembly 6. The signal processing unit 5 is fixed to the bottom of the first mounting cavity, and its top has multiple signal interfaces. Each signal interface has an elastic sealing ring on its outer side to enhance the sealing performance at the interface. The antenna assembly 6 is mounted on the top of the signal processing unit 5 via a threaded connection. Multiple adjustable signal enhancement plates 7 are provided on the circumferential side of the antenna assembly 6. The signal enhancement plates 7 are connected to the antenna assembly 6 via a rotating shaft, and the end of the rotating shaft has a locking nut for fixing the angle of the signal enhancement plates 7. The angle of the signal enhancement plates 7 can be manually adjusted according to the actual usage environment, thereby changing the signal coverage range.

[0027] The specific structure of heat dissipation adjustment module 3 is as follows: Figure 3 As shown, the system includes a heat sink assembly 8 and a cooling fan 9. The heat sink assembly 8 is fixed to the bottom of the second mounting cavity, and its top is connected to the cooling fan 9 via a snap-fit ​​structure. The air inlet of the cooling fan 9 faces the first mounting cavity, and the air outlet faces the outside of the protective housing 1, thus forming an airflow channel from the inside to the outside. The surface of the heat sink assembly 8 is provided with multiple parallel heat dissipation fins, with a spacing of 2-3 mm between adjacent heat dissipation fins to ensure that airflow can pass smoothly and remove heat. The speed of the cooling fan 9 is controlled in real time by a temperature sensor built into the signal processing unit 5. When the temperature of the signal transmission module 2 is detected to rise, the speed of the cooling fan 9 will increase accordingly, thereby accelerating the heat dissipation efficiency.

[0028] The specific structure of anti-interference module 4 is as follows: Figure 4 As shown, the system includes a shielding cover 10 and a filter 11. The shielding cover 10 is made of metal and has multiple honeycomb-shaped shielding holes evenly distributed on its inner surface to absorb and block external electromagnetic interference. The shielding cover 10 is bolted to the bottom of the third mounting cavity, and the filter 11 is welded to the top of the shielding cover 10. The input terminal of the filter 11 is connected to the output terminal of the signal processing unit 5 via a wire, and the output terminal is connected to the input terminal of the antenna assembly 6, for filtering the signal to reduce external interference.

[0029] The protective housing 1 has a sliding groove 12 on its top, and a sliding block 13 inside the sliding groove 12. The bottom of the sliding block 13 is connected to the bottom of the sliding groove 12 by a spring, and an adjustment knob 14 on the top of the sliding block 13. The outer side of the adjustment knob 14 has anti-slip textures and is used to manually adjust the position of the sliding block 13, thereby changing the ventilation area of ​​the protective housing 1. When it is necessary to increase the ventilation volume, the sliding block 13 can be moved upward by rotating the adjustment knob 14, thereby increasing the opening area of ​​the ventilation port; conversely, when it is necessary to reduce the ventilation volume, the sliding block 13 can be moved downward to reduce the opening area.

[0030] The bottom of the first mounting cavity is provided with a shock-absorbing pad 15, which is made of rubber material and has a thickness of 5-8 mm. The top of the shock-absorbing pad 15 has multiple protrusions, each 2-3 mm high, used to absorb vibrations generated during the operation of the signal transmission module 2. The design of the shock-absorbing pad 15 can effectively reduce mechanical shocks caused by external vibrations or the operation of internal equipment, thereby improving the stability of the device.

[0031] The outer side of the protective housing 1 is provided with multiple heat dissipation holes 16, which are arranged in a circle. Each heat dissipation hole 16 has a diameter of 3-5 mm, and the center distance between adjacent heat dissipation holes 16 is 10-15 mm. Dust filters are installed inside the heat dissipation holes 16 to prevent dust from entering the protective housing 1. The design of the heat dissipation holes 16 not only meets the heat dissipation requirements but also effectively prevents dust from contaminating the internal components.

[0032] The signal processing unit 5 has an expansion interface 17 on its side. The expansion interface 17 connects to external devices via wires to expand the functionality of the signal transmission module 2. A waterproof cover is provided on the outside of the expansion interface 17, and the waterproof cover is connected to the side of the signal processing unit 5 via a hinge. The waterproof cover design effectively prevents moisture from entering the expansion interface 17, thereby protecting the safety and reliability of the interface.

[0033] In practical applications, the wireless transmission device of this invention first receives signals from external devices through the signal processing unit 5 and transmits them to the antenna assembly 6. The antenna assembly 6 optimizes the signal coverage and strength through the direction adjustment of the signal enhancement sheet 7. Simultaneously, the heat dissipation adjustment module 3, through the coordinated action of the heat sink group 8 and the cooling fan 9, quickly dissipates the heat generated during the operation of the signal transmission module 2, ensuring the device can operate stably and continuously in high-temperature environments. The shielding cover 10 and filter 11 in the anti-interference module 4 shield and filter external electromagnetic interference, thereby ensuring the quality and stability of signal transmission. Furthermore, the sliding groove 12 and adjustment knob 14 of the protective housing 1 allow users to flexibly adjust the ventilation area according to actual needs, further enhancing the adaptability and practicality of the device. To better enable those skilled in the art to fully understand and implement this invention, the specific implementation principle of this invention is further explained below in conjunction with a specific application scenario.

[0034] In a real-world application scenario, suppose the projector needs to transmit wireless signals in a large conference room where multiple electronic devices operate simultaneously and the ambient temperature is high. First, the wireless transmission device of this invention is connected to the projector via the expansion interface 17, ensuring that the signal processing unit 5 can receive high-definition video signals from external devices. At this time, the signal processing unit 5 completes signal input through multiple signal interfaces on its top, and uses elastic sealing rings to enhance the sealing at the interfaces, preventing external dust or moisture from entering and affecting signal stability.

[0035] Subsequently, the signal processing unit 5 transmits the received signal to the antenna assembly 6, which is fixed to the top of the signal processing unit 5 via a threaded connection, ensuring structural stability. Multiple signal enhancement plates 7 on the circumferential side of the antenna assembly 6 can be manually adjusted in angle according to the actual usage environment. For example, in a conference room, the direction of the signal enhancement plates 7 can be adjusted by rotating the axis to face areas with weak signal coverage, and the angle can be fixed by tightening the locknuts, thereby optimizing signal coverage and strength. This design enables the signal transmission module 2 to provide more stable wireless signal transmission in complex environments.

[0036] Meanwhile, the heat dissipation module 3 begins to function. When the signal transmission module 2 operates, it generates heat, which is conducted to the surface of the heat sink fins through the heat sink assembly 8. Since the spacing between adjacent heat sink fins is 2-3 mm, airflow can pass smoothly and carry away the heat. Furthermore, the air inlet of the cooling fan 9 faces the first mounting cavity, and the air outlet faces the outside of the protective housing 1, forming an airflow channel from the inside to the outside. The temperature sensor built into the signal processing unit 5 monitors the temperature changes of the signal transmission module 2 in real time. When an increase in temperature is detected, the speed of the cooling fan 9 increases accordingly, thereby accelerating heat dissipation and ensuring that the device can continue to operate stably in high-temperature environments. This process not only effectively reduces the operating temperature of the signal transmission module 2 but also avoids performance degradation caused by overheating.

[0037] The anti-interference module 4 processes external electromagnetic interference through the shielding cover 10 and the filter 11. In a conference room, the simultaneous operation of multiple electronic devices may generate strong electromagnetic interference. The honeycomb shielding holes inside the shielding cover 10 can absorb and block these interference signals, reducing their impact on wireless transmission. The filter 11 is connected to the shielding cover 10 by welding. Its input end is connected to the output end of the signal processing unit 5, and its output end is connected to the input end of the antenna assembly 6, filtering the signal to further reduce external interference. This design ensures the quality and stability of signal transmission, avoiding problems such as degraded projection image quality or transmission interruption caused by interference.

[0038] Furthermore, the sliding groove 12 and adjusting knob 14 of the protective housing 1 provide flexible ventilation area adjustment. In a conference room, if the ambient temperature is high, the user can rotate the adjusting knob 14 to move the sliding block 13 upward, increasing the opening area of ​​the vent and thus increasing airflow to aid heat dissipation; conversely, if the ambient temperature is low or dust ingress needs to be reduced, the sliding block 13 can be moved downward to decrease the opening area. This design enhances the adaptability and practicality of the device, meeting the usage needs in different environments.

[0039] The shock-absorbing pad 15 at the bottom of the first mounting cavity is made of rubber material with a thickness of 5-8 mm and multiple protrusions on the top, each protruding 2-3 mm high. Vibrations generated when the signal transmission module 2 is running are absorbed by the shock-absorbing pad 15, thereby reducing mechanical impacts from external vibrations or internal equipment operation. This design improves the overall stability of the device, ensuring that signal transmission is not affected by vibration.

[0040] Multiple heat dissipation holes 16 on the outer side of the protective housing 1 are arranged in a circular pattern. Each heat dissipation hole 16 has a diameter of 3-5 mm, and the center distance between adjacent heat dissipation holes 16 is 10-15 mm. Dust filters are installed inside the heat dissipation holes 16 to prevent dust from entering the protective housing 1. This design not only meets the heat dissipation requirements but also effectively prevents dust from contaminating internal components, extending the service life of the device.

[0041] Finally, the waterproof cover of the expansion interface 17 is connected to the side of the signal processing unit 5 via a hinge. When the expansion interface 17 is not in use, the waterproof cover effectively prevents moisture from entering, protecting the safety and reliability of the interface. This design ensures the normal operation of the device in humid environments, further enhancing its applicability.

[0042] In summary, this invention achieves efficient and stable wireless signal transmission in complex environments through the angle adjustment of the signal enhancement plate 7, the synergistic effect of the heat sink assembly 8 and the cooling fan 9, the anti-interference treatment of the shielding cover 10 and the filter 11, and the flexible ventilation design of the protective shell 1. The combination of the above steps and principles fully demonstrates the significant advantages of this invention in signal stability, miniaturization, and heat dissipation performance, meeting the usage requirements of projectors in complex environments.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wireless transmission device for a projector, characterized in that, The device includes a protective housing (1), a signal transmission module (2), a heat dissipation adjustment module (3), and an anti-interference module (4). The protective housing (1) has a first mounting cavity, a second mounting cavity, and a third mounting cavity inside. The signal transmission module (2) is located in the first mounting cavity, the heat dissipation adjustment module (3) is located in the second mounting cavity, and the anti-interference module (4) is located in the third mounting cavity. The signal transmission module (2) is connected to the heat dissipation adjustment module (3) and the anti-interference module (4) through wires.

2. The wireless transmission device for a projector according to claim 1, characterized in that, The signal transmission module (2) includes a signal processing unit (5) and an antenna assembly (6). The signal processing unit (5) is fixed to the bottom of the first mounting cavity and has several signal interfaces on its top. An elastic sealing ring is provided on the outside of the signal interface. The antenna assembly (6) is installed on the top of the signal processing unit (5) by means of threaded connection. The circumferential side of the antenna assembly (6) is provided with multiple adjustable direction signal enhancement plates (7). The signal enhancement plates (7) are connected to the antenna assembly (6) through a rotating shaft. A locking nut is provided at the end of the rotating shaft.

3. The wireless transmission device for a projector according to claim 1, characterized in that, The heat dissipation adjustment module (3) includes a heat sink assembly (8) and a cooling fan (9). The heat sink assembly (8) is fixed to the bottom of the second mounting cavity, and its top is connected to the cooling fan (9) through a snap-fit ​​structure. The air inlet of the cooling fan (9) faces the first mounting cavity, and the air outlet faces the outside of the protective housing (1). The surface of the heat sink assembly (8) is provided with multiple parallel heat dissipation fins, and the spacing between adjacent heat dissipation fins is 2 mm to 3 mm.

4. The wireless transmission device for a projector according to claim 1, characterized in that, The anti-interference module (4) includes a shield (10) and a filter (11). The shield (10) is made of metal and has multiple honeycomb-shaped shielding holes inside. The shield (10) is fixed to the bottom of the third mounting cavity by bolts. The filter (11) is connected to the top of the shield (10) by welding. The input end of the filter (11) is connected to the output end of the signal processing unit (5) by wires, and the output end is connected to the input end of the antenna assembly (6).

5. A wireless transmission device for a projector according to claim 1, characterized in that, The protective housing (1) has a sliding groove (12) on its top, and a sliding block (13) is provided inside the sliding groove (12). The bottom of the sliding block (13) is connected to the bottom of the sliding groove (12) by a spring, and an adjustment knob (14) is provided on the top of the sliding block (13).

6. A wireless transmission device for a projector according to claim 1, characterized in that, The bottom of the first mounting cavity is provided with a shock-absorbing pad (15), which is made of rubber material and has a thickness of 5 mm to 8 mm. The top of the shock-absorbing pad (15) is provided with multiple protrusions, the height of which is 2 mm to 3 mm.

7. A wireless transmission device for a projector according to claim 1, characterized in that, The outer side of the protective housing (1) is provided with a plurality of heat dissipation holes (16), which are arranged in a circular pattern. The diameter of each heat dissipation hole (16) is 3 mm to 5 mm, and the center distance between adjacent heat dissipation holes (16) is 10 mm to 15 mm. The interior of the heat dissipation holes (16) is provided with a dustproof mesh.

8. A wireless transmission device for a projector according to claim 2, characterized in that, The signal processing unit (5) has an expansion interface (17) on its side. The expansion interface (17) is connected to an external device via a wire. The expansion interface (17) has a waterproof cover on its outer side. The waterproof cover is connected to the side of the signal processing unit (5) via a hinge.

Images