Transverse airflow internal circulation heat dissipation structure of projector

Abstract

The utility model provides a projector airflow transverse internal circulation heat dissipation structure, which comprises a sealing shell, and a projection mechanism is arranged in the sealing shell. According to the LED lamp, heat generated by the light source is rapidly conducted to the top cooling fin and the bottom cooling fin through the heat conducting fins, multi-path heat dissipation is achieved, heat concentration is avoided, the heat dissipation efficiency is improved, the draught fan A sucks external cold air, the external cold air enters the heat dissipation channel after passing through the heat exchange fins, the temperature of the top cooling fin is reduced in the cooling process, the light source is directly cooled, and the heat dissipation efficiency is improved. The heat exchange fins are further cooled, the temperature of air in the sealing shell is further reduced, so that the internal temperature of the equipment is effectively reduced, the bottom cooling fins are additionally cooled through the fan arranged at the bottom, it is guaranteed that the cooling fins can be continuously kept at the low temperature, and the influence of overheating of the light source on the stability of the equipment is reduced; the temperature of the light source is effectively controlled within a reasonable range, overheating is avoided, and the performance and the service life of the light source are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation structures, in particular to a heat dissipation structure for a projector with a transverse internal circulation of airflow. Background Art

[0002] A projector is a device that projects images or videos from a source device onto a larger screen or surface. It is widely used in education, business, and entertainment. Major types include liquid crystal projectors (LCD), digital light processing (DLP), laser projectors, and LED projectors. However, existing projectors struggle to quickly cool their heat sinks in high-temperature environments, such as on hot summer days. This causes the light source and other key components to remain overheated, impacting stable operation. Therefore, improvements are needed. Utility Model Content

[0003] In order to solve the above problems, the present invention proposes a projector airflow horizontal internal circulation heat dissipation structure to more accurately solve the above-mentioned problem that in high temperature environments, such as hot summers, the heat sink temperature is difficult to drop quickly, resulting in high temperatures of the light source and other key components.

[0004] The utility model is achieved through the following technical solutions:

[0005] The utility model provides a projector airflow transverse internal circulation heat dissipation structure, comprising a sealed shell, a projection mechanism installed inside the sealed shell, an external cooling mechanism installed on the surface of the sealed shell, and a heat equalization mechanism installed on the inner wall of the sealed shell;

[0006] The external cooling mechanism includes a mounting block, which is fixedly mounted on the side of the projection mechanism, a heat conducting plate fixedly mounted on the side of the mounting block, a top heat sink fixedly mounted on the top surface of the heat conducting plate, a heat dissipation channel fixedly mounted on the surface of the top heat sink, a fan A fixedly mounted on the inner side of the heat dissipation channel, an inlet hole is opened on the inner side of the heat dissipation channel, a heat exchange plate fixedly mounted between the heat dissipation channel and the sealing shell, and a partition is installed in the middle of the heat exchange plate.

[0007] Furthermore, a bottom heat sink is fixedly mounted on the bottom surface of the heat conducting sheet, and a fan is fixedly mounted on the side surface of the bottom heat sink.

[0008] Furthermore, the heat conducting sheet is made of copper, and reinforcing ribs are fixedly installed on the surface of the sealing shell.

[0009] Furthermore, the projection mechanism includes a light source, which is fixedly mounted on a side surface of the sealed shell. A lens is fixedly mounted on an inner wall of the sealed shell, and a projection lens is fixedly mounted on the side surface of the sealed shell.

[0010] Furthermore, the light source is attached to the heat conducting sheet.

[0011] Furthermore, the heat equalization mechanism includes a fan B, which is fixedly mounted on the bottom surface of the sealed shell, a wind guide plate is fixedly mounted on the side surface of the fan B, and a flow channel is fixedly mounted on the top surface of the wind guide plate.

[0012] Furthermore, the top end of the flow channel faces the heat exchange fin.

[0013] Furthermore, the material of the air guide plate is PP plastic.

[0014] Beneficial effects of the utility model:

[0015] 1. In the present invention, the heat generated by the light source is quickly transferred to the top heat sink and the bottom heat sink through the heat conducting sheet, thereby realizing multi-path heat dissipation, avoiding heat concentration, and improving heat dissipation efficiency. The fan A inhales external cold air and enters the heat dissipation channel after passing through the heat exchange sheet. The cooling process not only reduces the temperature of the top heat sink, directly cooling the light source, but also cools the heat exchange sheet, further reducing the temperature of the air in the sealed shell, thereby effectively reducing the internal temperature of the equipment. By setting the bottom fan to additionally cool the bottom heat sink, it is ensured that the heat sink can continuously maintain a low temperature, reducing the impact of overheating of the light source on the stability of the equipment, ensuring that the temperature of the light source is effectively controlled within a reasonable range, avoiding overheating, and improving the performance and life of the light source.

[0016] 2. In the present invention, the air in the sealed shell is circulated internally by the action of the fan B, and the air continuously contacts the heat exchange plate through the air guide plate and the flow channel, forming an effective internal circulation heat dissipation structure, thereby improving the air cooling efficiency in the sealed shell. In this way, when the fan A inhales external cold air to cool the heat exchange plate, the internal circulating air further dissipates heat around the heat exchange plate, thereby accelerating the cooling effect of the heat exchange plate, reducing the air temperature in the sealed shell, and effectively maintaining a stable operating temperature inside the equipment. The provision of partitions avoids direct circulation between the sealed shell and the outside air, and prevents external stains or dust from entering the sealed shell through the heat exchange plate, thereby ensuring the cleanliness and stability of the interior of the equipment, and reducing the impact of the external environment on the performance and life of the equipment. Through the synergistic effect of internal and external heat dissipation paths, not only the light source and the heat sink can be cooled, but also the appropriate temperature of the air inside the sealed shell can be maintained, thereby enhancing the heat dissipation effect and stability of the entire equipment and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the projector's horizontal internal circulation heat dissipation structure of the present invention;

[0018] Figure 2 This is a bottom view of the projector's heat dissipation structure with horizontal internal air circulation according to the present invention;

[0019] Figure 3 This is a cross-sectional view of the projector's airflow transverse internal circulation heat dissipation structure of the present invention;

[0020] Figure 4 It is a side view of the projector's heat dissipation structure with horizontal internal air circulation according to the present invention.

[0021] The reference numerals are as follows:

[0022] 1. Sealed shell; 2. Projection mechanism; 3. External cooling mechanism; 4. Heat dissipation mechanism; 31. Mounting block; 32. Heat conducting plate; 33. Top heat sink; 34. Bottom heat sink; 35. Heat dissipation channel; 36. Fan A; 37. Inlet hole; 38. Heat exchanger; 39. Fan; 5. Reinforcement rib; 21. Light source; 22. Lens; 23. Projection lens; 41. Fan B; 42. Air guide plate; 43. Flow channel. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0024] Please refer to Figures 1-4The utility model proposes a projector airflow transverse internal circulation heat dissipation structure, comprising a sealed shell 1, a projection mechanism 2 is installed inside the sealed shell 1, an external cooling mechanism 3 is installed on the surface of the sealed shell 1, and a heat equalization mechanism 4 is installed on the inner wall of the sealed shell 1. The sealed shell 1 is fixed by bolts to ensure its structural stability and protect the internal components from the influence of the external environment. The material of the sealed shell 1 can be selected from heat-resistant metal or high-strength engineering plastic to ensure its durability and aging resistance in high temperature environments. The external cooling mechanism 3 includes a mounting block 31, which is fixedly installed on the side of the projection mechanism 2. The material of the mounting block 31 can be selected from aluminum alloy or stainless steel, which has good thermal conductivity and corrosion resistance. A heat conducting plate 32 is fixedly installed on the side of the mounting block 31, and a bottom heat sink 34 is fixedly installed on the bottom surface of the heat conducting plate 32. The heat conducting plate 32 is made of copper and has excellent thermal conductivity, so that the heat of the light source 21 can be quickly transferred to the bottom heat sink 34 and the top heat sink 33. The heat conducting sheet 32 ​​can be tightly connected to the bottom heat sink 34 and the top heat sink 33 by means of thermal adhesive or screw fixing to ensure its heat conduction efficiency and stability. The surface of the sealed shell 1 is fixedly mounted with a reinforcing rib 5, which is fixed to the sealed shell 1 by welding or riveting to increase the rigidity and stability of the sealed shell 1 and prevent deformation in a high temperature or vibration environment. A fan 39 is fixedly mounted on the side of the bottom heat sink 34. The function of the fan 39 is to provide continuous cooling for the bottom heat sink 34. The fan 39 is fixed by bolts or snaps to facilitate disassembly and maintenance. The material of the fan 39 should be resistant to high temperatures and wear to ensure reliability in long-term use. The top surface of the heat conducting sheet 32 ​​is fixedly mounted with a top heat sink 33, and the surface of the top heat sink 33 is fixedly mounted with a heat dissipation channel 35. A fan A36 is fixedly mounted on the inside of the heat dissipation channel 35. The fan A36 is used to inhale external cold air and enter the heat dissipation channel 35 after passing through the heat exchange sheet 38 to achieve air convection and cooling. An inlet hole 37 is provided on the inner side of the heat dissipation channel 35. The inlet hole 37 is precisely machined to ensure a seal with the fan A36, thereby ensuring efficient air flow in the cooling path. A heat exchange plate 38 is fixedly installed between the heat dissipation channel 35 and the sealed shell 1. The function of the heat exchange plate 38 is to lower the temperature of the cold air provided by the fan A36, thereby further reducing the air temperature inside the sealed shell 1. The heat exchange plate 38 is fixed using a thermally conductive adhesive or screw connection to ensure its efficient heat exchange capacity. A partition is installed in the middle of the heat exchange plate 38. The partition is made of PP plastic or stainless steel, effectively preventing the air inside the sealed shell 1 from direct contact with the outside air, preventing external stains or dust from entering the sealed shell 1, ensuring the cleanliness and stability of the equipment interior, and reducing performance degradation caused by external factors.

[0025] The projection mechanism 2 includes a light source 21, which is fixedly mounted on the side of the sealed shell 1. The light source 21 is encapsulated with high-temperature resistant materials to ensure its safety in high-temperature environments. A lens 22 is fixedly mounted on the inner wall of the sealed shell 1. The lens 22 is used to focus the light from the light source 21 and output a clear projection effect. The material of the lens 22 can be selected from high-temperature resistant glass or quartz to ensure that it does not deform in a high-temperature environment. The light source 21 is bonded to a heat conducting plate 32, which is fixed to the light source 21 by thermal adhesive or bolts. The heat conducting plate 32 can quickly absorb the heat generated by the light source 21 and prevent the life of the light source 21 from being affected by excessive temperature. A projection lens 23 is fixedly mounted on the side of the sealed shell 1. The projection lens 23 is used to project the light transmitted by the lens 22 onto an external screen to ensure high-quality image output. The heat equalization mechanism 4 includes a fan B41, which is fixedly mounted on the bottom surface of the sealed shell 1. The function of the fan B41 is to provide air circulation in the sealed shell 1 to ensure uniform internal temperature. Fan B41 is mounted to the sealed housing 1 using screws or snap-on connections, facilitating routine maintenance and replacement. A wind deflector 42 is fixedly mounted on the side of fan B41. Made of PP plastic, this material is both lightweight and durable while effectively directing airflow. A flow channel 43 is fixedly mounted on the top surface of wind deflector 42. The top of flow channel 43 faces the heat exchange fins 38, allowing air within the sealed housing 1 to circulate through the fins 38 to dissipate heat, thereby lowering the internal temperature. Flow channel 43 is constructed of high-temperature-resistant plastic or aluminum alloy to ensure stability in high-temperature environments.

[0026] In this embodiment, light is emitted from the light source 21, then passes through the lens 22 and is finally projected from the projection lens 23. During the projection process, the light source 21 generates intense heat. When the light source 21 generates heat, the heat can be conducted to the bottom heat sink 34 and the top heat sink 33 through the heat conducting plate 32. Then, the outside air is drawn in by the fan A36. The outside air enters the heat dissipation channel 35 through the heat exchange plate 38 and the inlet hole 37 and is blown out from the top heat sink 33. In this process, the heat exchange plate 38 and the top heat sink 33 can be cooled. Cooling the top heat sink 33 can directly cool the light source 21, while cooling the heat exchange plate 38 can cool the air in the sealed shell 1, thereby cooling the entire device. The fan 39 provided can cool the bottom heat sink 34. The operating temperature of the light source 21 can be reduced to the maximum extent. In the present invention, the heat generated by the light source 21 is quickly transferred to the top heat sink 33 and the bottom heat sink 34 through the heat conducting sheet 32, thereby realizing multi-path heat dissipation, avoiding heat concentration, and improving heat dissipation efficiency. The fan A36 inhales external cold air and enters the heat dissipation channel 35 after passing through the heat exchange sheet 38. The cooling process not only reduces the temperature of the top heat sink 33 and directly cools the light source 21, but also cools the heat exchange sheet 38, further reducing the temperature of the air in the sealed shell 1, thereby effectively reducing the internal temperature of the equipment. By setting the bottom fan 39 to additionally cool the bottom heat sink 34, it is ensured that the heat sink can continuously maintain a low temperature, reducing the impact of overheating of the light source 21 on the stability of the equipment, and ensuring The temperature of the light source 21 is effectively controlled within a reasonable range to avoid overheating, thereby improving the performance and life of the light source 21. The internal air of the sealed shell 1 is inhaled through the fan B41, and then the air passes through the air guide plate 42 and the flow channel 43 into the heat exchange plate 38 and returns to the sealed shell 1 again, so that the air in the sealed shell 1 can fully contact with the heat exchange plate 38. In this way, when the fan A36 takes in air, the heat exchange plate 38 can be cooled, thereby reducing the temperature of the air in the sealed shell 1. The provided partition can prevent the sealed shell 1 from circulating with the outside air, and prevent external stains from entering the sealed shell 1 through the heat exchange plate 38. In the utility model, the air in the sealed shell 1 is circulated internally by the action of the fan B41, and the air is continuously passed through the guide plate 42 and the flow channel 43. The air plate 42 and the flow channel 43 are in contact with the heat exchange plate 38, forming an effective internal circulation heat dissipation structure, which improves the air cooling efficiency in the sealed shell 1. In this way, when the fan A36 inhales external cold air to cool the heat exchange plate 38, the internal circulating air further dissipates heat around the heat exchange plate 38, thereby accelerating the cooling effect of the heat exchange plate 38, reducing the air temperature in the sealed shell 1, and effectively maintaining a stable working temperature inside the equipment. The partition is set to avoid direct circulation between the sealed shell 1 and the outside air, preventing external stains or dust from entering the sealed shell 1 through the heat exchange plate 38, ensuring the cleanliness and stability of the interior of the equipment, and reducing the impact of the external environment on the performance and life of the equipment. Through the synergistic effect of the internal and external heat dissipation paths, not only the light source 21 and the heat sink can be cooled,It can also maintain the appropriate temperature of the air inside the sealed shell 1, thereby enhancing the heat dissipation effect and stability of the entire device and extending the service life of the device.

[0027] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A projector airflow lateral internal circulation heat dissipation structure, characterized in that: It includes a sealed shell, a projection mechanism is installed inside the sealed shell, an external cooling mechanism is installed on the surface of the sealed shell, and a heat equalization mechanism is installed on the inner wall of the sealed shell; the external cooling mechanism includes a mounting block, the mounting block is fixedly installed on the side of the projection mechanism, a heat conducting plate is fixedly installed on the side of the mounting block, a top heat sink is fixedly installed on the top surface of the heat conducting plate, a heat dissipation channel is fixedly installed on the surface of the top heat sink, a fan A is fixedly installed on the inner side of the heat dissipation channel, an inlet hole is opened on the inner side of the heat dissipation channel, a heat exchange plate is fixedly installed between the heat dissipation channel and the sealed shell, and a partition is installed in the middle of the heat exchange plate.

2. The projector airflow lateral internal circulation heat dissipation structure according to claim 1, characterized in that: A bottom heat sink is fixedly mounted on the bottom surface of the heat conducting sheet, and a fan is fixedly mounted on the side surface of the bottom heat sink.

3. The projector airflow lateral internal circulation heat dissipation structure according to claim 1, characterized in that: The heat conducting sheet is made of copper, and reinforcing ribs are fixedly installed on the surface of the sealing shell.

4. The projector airflow lateral internal circulation heat dissipation structure according to claim 1, characterized in that: The projection mechanism comprises a light source, which is fixedly mounted on the side of the sealed shell. A lens is fixedly mounted on the inner wall of the sealed shell, and a projection lens is fixedly mounted on the side of the sealed shell.

5. The projector airflow lateral internal circulation heat dissipation structure according to claim 4, characterized in that: The light source is fitted with the heat conducting sheet.

6. The projector airflow lateral internal circulation heat dissipation structure according to claim 1, characterized in that: The heat equalization mechanism includes a fan B, which is fixedly mounted on the bottom surface of the sealed shell. An air guide plate is fixedly mounted on the side surface of the fan B, and a flow channel is fixedly mounted on the top surface of the air guide plate.

7. The projector airflow lateral internal circulation heat dissipation structure according to claim 6, characterized in that: The top end of the flow channel faces the heat exchange fin.

8. The projector airflow lateral internal circulation heat dissipation structure according to claim 6, characterized in that: The material of the air guide plate is PP plastic.

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