Longitudinal flowing heat dissipation structure of internal circulating air flow of projector

Abstract

The utility model provides a projector internal circulation air flow longitudinal flow heat dissipation structure, which comprises a projector shell, a projection mechanism and an internal circulation mechanism are arranged in the projector shell, and an external circulation mechanism is arranged on the bottom surface of the projector shell; the outer circulation mechanism comprises a lower cooling fin; according to the utility model, heat generated when the projection mechanism works can be directly conducted to the lower radiating fins, external cold air enters the lower radiating fins to take away the heat through the air draft effect of the external circulating fan, and the heat is exhausted through the exhaust passage, so that the design can realize rapid and effective heat dissipation, is helpful to maintain the operation of equipment at a lower temperature, prevents overheating, and improves the working efficiency. The discharged hot air can take away further heat when passing through the outer radiating fins, and the outer radiating fins are tightly attached to the light source, so that the light source component can be directly cooled, the service life of the light source can be prolonged, and the stability and the performance of the light source can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation structures, in particular to a heat dissipation structure with longitudinal flow of circulating airflow inside a projector. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals.

[0003] However, in existing technologies, the heat generated by projectors during operation is difficult to conduct and dissipate quickly, causing the internal temperature of the device to rise. This low heat dissipation efficiency makes the device prone to overheating after long-term operation, affecting projection quality and device performance. Therefore, improvements are needed. Utility Model Content

[0004] In order to solve the above problem, the present invention proposes a heat dissipation structure in which the circulating airflow flows longitudinally within the projector, so as to more accurately solve the problem of low heat dissipation efficiency of the above projector.

[0005] The utility model is achieved through the following technical solutions:

[0006] The utility model provides a longitudinally flowing heat dissipation structure of an internal circulating airflow of a projector, comprising a projector housing, a projection mechanism and an internal circulating mechanism installed inside the projector housing, and an external circulating mechanism installed on the bottom surface of the projector housing;

[0007] The external circulation mechanism includes a lower heat sink, which is fixedly mounted on the bottom surface of the projector housing. An external circulation fan is fixedly mounted on the bottom surface of the lower heat sink. The side of the external circulation fan is connected to an exhaust duct, and an external heat sink is fixedly mounted on the inner side of the exhaust duct.

[0008] Furthermore, the exhaust duct is a trumpet-shaped structure, and the right opening of the exhaust duct is larger than the left opening.

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

[0010] Furthermore, the left and right sides of the lower heat sink are exposed.

[0011] Furthermore, the internal circulation mechanism includes an upper heat sink fixedly mounted on the top surface of the lower heat sink, an internal circulation fan fixedly mounted on the top surface of the projector housing, and an air guide plate fixedly mounted on the inner side of the internal circulation fan.

[0012] Furthermore, reinforcing ribs are fixedly mounted on the surface of the upper heat sink, and the reinforcing ribs are distributed on the surface of the upper heat sink in a cross-staggered pattern.

[0013] Furthermore, the upper heat sink and the lower heat sink are not connected.

[0014] Furthermore, the material of the air guide plate is PP plastic.

[0015] Beneficial effects of the utility model:

[0016] 1. In the present invention, the heat generated when the projection mechanism is working can be directly conducted to the lower heat sink. Through the exhaust effect of the external circulation fan, external cold air enters the lower heat sink to take away the heat and is discharged through the exhaust duct. This design can achieve rapid and effective heat dissipation, which helps to maintain the equipment running at a lower temperature and prevent overheating. The exhausted hot air flow will also take away further heat when passing through the external heat sink. Since the external heat sink is in close contact with the light source, the light source components can be directly cooled, which can extend the service life of the light source and improve its stability and performance. The heat is taken away by the flow of external air. At the same time, the design of the exhaust duct can effectively discharge hot air, avoid heat retention inside the projector, and improve the heat dissipation efficiency of the entire projection mechanism.

[0017] 2. In the present invention, the projector casing adopts a sealed structure, which is isolated from the outside world, preventing external pollutants such as dust and moisture from entering the interior of the device, and protecting the optical components and electronic components inside the projector. By setting an internal circulation fan, the internal air circulates inside the projector, bringing the heat of the projection mechanism to the upper heat sink, then conducting it to the lower heat sink, and finally discharged by the external circulation mechanism. This dual heat dissipation system not only improves the heat dissipation efficiency, but also effectively reduces the temperature inside the device and avoids local heat accumulation. The internal circulation mechanism conducts the heat from the projection mechanism to the upper heat sink, then to the lower heat sink, and finally discharged by the external circulation, forming an effective heat conduction path, which can achieve efficient heat dissipation without introducing outside air, so that the projector can maintain a low temperature even in a closed structure, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the heat dissipation structure of the projector with longitudinal circulation airflow according to the present invention;

[0019] Figure 2 This is a bottom view of the heat dissipation structure of the projector with longitudinal circulating airflow according to the present invention;

[0020] Figure 3 This is a cross-sectional view of the heat dissipation structure of the projector with longitudinal circulation airflow according to the present invention;

[0021] Figure 4It is a rear view of the heat dissipation structure of the projector with longitudinal circulating airflow according to the present invention.

[0022] The reference numerals are as follows:

[0023] 1. Projector housing; 2. Projection mechanism; 3. Internal circulation mechanism; 4. External circulation mechanism; 41. Lower heat sink; 42. External circulation fan; 43. Exhaust duct; 44. External heat sink; 21. Light source; 22. Reflector; 23. Projection lens; 31. Upper heat sink; 32. Internal circulation fan; 33. Air guide plate; 34. Reinforcement ribs. DETAILED DESCRIPTION

[0024] 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.

[0025] Please refer to Figure 1-Figure 4 The present invention proposes a longitudinal flow heat dissipation structure of the internal circulating airflow of the projector, comprising a projector housing 1, a projection mechanism 2 and an internal circulation mechanism 3 installed inside the projector housing 1, and an external circulation mechanism 4 installed on the bottom surface of the projector housing 1. The projector housing 1 adopts a sealed structure, which is isolated from the outside world and can effectively prevent external pollutants such as dust and moisture from entering the interior of the device, thereby protecting the optical components and electronic components of the projector and ensuring the projection quality and equipment life. The material of the projector housing 1 can be selected from aluminum alloy or high-strength plastic. The former has good heat dissipation and lightweight advantages, while the latter has impact resistance and corrosion resistance. The projector housing 1 can be fixed to the internal components by bolts or welding to ensure the firmness of the structure.

[0026] The external circulation mechanism 4 includes a lower heat sink 41, which is fixedly mounted on the bottom surface of the projector housing 1. It can be fixed by bolts or rivets to ensure a stable connection and facilitate disassembly and maintenance. The left and right sides of the lower heat sink 41 are exposed to the outside, further improving the heat dissipation efficiency. The material of the lower heat sink 41 can be selected from high-thermal-conductivity aluminum or copper to ensure efficient heat conduction and enhance the heat dissipation effect. The bottom surface of the lower heat sink 41 is fixedly mounted with an external circulation fan 42. The external circulation fan 42 can be installed by screws or flange connections to ensure stability and vibration reduction during fan operation. The side of the external circulation fan 42 is connected to an exhaust duct 43. The exhaust duct 43 is designed as a trumpet-shaped structure with a right opening larger than the left opening. This structural design helps to improve the exhaust flow rate and heat discharge efficiency. The inner side of the exhaust duct 43 is fixedly mounted with an external heat sink 44. The external heat sink 44 and the exhaust duct 43 can be connected by rivets or snaps to ensure the smoothness of the exhaust duct and the heat conduction efficiency. The outer heat sink 44 can be made of aluminum alloy with good thermal conductivity, which is directly attached to the light source 21 and can efficiently transfer heat and further cool the core light source 21 components, thereby extending the service life of the light source 21 and improving its stability.

[0027] The projection mechanism 2 includes a light source 21, which is fixedly mounted on the side of the projector housing 1 and can be fixed with bolts or a slide structure to ensure that the light source fits tightly against the housing and is easy to replace. The material of the light source 21 can be a high-brightness LED or laser light source to ensure projection quality and brightness. A reflector 22 is fixedly mounted on the inner wall of the projector housing 1 and is fixed to the inner wall by screws or rivets. The material of the reflector 22 can be selected from aluminum or silver-plated materials with high reflectivity to ensure that light is efficiently reflected to the projection lens 23 to avoid light loss. The projection lens 23 is fixed to the surface of the housing, and the lens material can be glass or polycarbonate to ensure imaging quality and durability.

[0028] The internal circulation mechanism 3 includes an upper heat sink 31, fixedly mounted with reinforcing ribs 34 arranged in a crisscross pattern. This structure increases the heat sink's surface area and enhances heat dissipation. The reinforcing ribs 34 can be made of aluminum or copper, and their sturdy structure effectively supports the heat sink and prevents deformation. The upper heat sink 31 is fixedly mounted on the top surface of the lower heat sink 41. The two are tightly connected using thermal adhesive or bolts to ensure effective heat conduction. An internal circulation fan 32 is fixedly mounted on the top surface of the projector housing 1. The internal circulation fan 32 is mounted using a flange connection or bolts to ensure stability and effective airflow during operation. An air deflector 33 is fixedly mounted on the inside of the internal circulation fan 32. The air deflector 33 is made of PP plastic, which has excellent high-temperature and corrosion resistance, capable of withstanding the operating temperatures inside the device for a long time. It also has good formability, ensuring that the air deflector 33 guides airflow to the designated location, improving heat dissipation efficiency.

[0029] In this embodiment, light is emitted by the light source 21, then reflected by the reflective plate 22 and with the help of the DMD driving board, and finally projected through the projection lens 23. In this process, the heat generated by the projection mechanism 2 when it is working can be conducted to the lower heat sink 41, and then exhausted by the external circulation fan 42. At this time, the external air enters the lower heat sink 41 to take away the heat and is discharged through the exhaust duct 43. At the same time, when being discharged, it can also be blown into the outer heat sink 44. Since the outer heat sink 44 is in contact with the light source 21, the core light source 21 component can be further cooled. In the utility model, the heat generated by the projection mechanism 2 when it is working can be directly conducted to the lower heat sink 41. The external circulation fan 42 draws air, and the external cold air enters the lower heat sink 41 to take away the heat, and is discharged through the exhaust duct 43. This design can achieve fast and effective heat dissipation, which helps to keep the equipment running at a lower temperature and prevent overheating. The exhausted hot air flow will also take away further heat when passing through the external heat sink 44. Since the external heat sink 44 is in close contact with the light source 21, it can directly cool the light source 21 components, which can extend the service life of the light source 21 and improve its stability and performance. The heat is taken away by the flow of external air, and the design of the exhaust duct 43 can effectively discharge the hot air to avoid heat retention inside the projector, thereby improving the efficiency of the entire projection mechanism 2. The heat dissipation efficiency is improved. At the same time, the projector housing 1 is a sealed structure and is not connected to the outside world. The internal circulation fan 32 is provided to drive the internal air through the air guide plate 33 and enter the upper heat sink 31. At this time, the air in the projector housing 1 can circulate and take away the heat from the projection mechanism 2 to the upper heat sink 31. Then the upper heat sink 31 conducts the heat to the lower heat sink 41, and finally dissipates the heat through the external circulation mechanism 4. The internal circulation mechanism 3 is provided to better take away the heat and improve the heat accumulation problem of the projection mechanism 2. In the utility model, the projector housing 1 adopts a sealed structure and is isolated from the outside world to prevent external pollutants such as dust and moisture from entering the equipment. Internally, it protects the optical components and electronic components inside the projector, and by setting up an internal circulation fan 32, the internal air circulates inside the projector, bringing the heat of the projection mechanism 2 to the upper heat sink 31, and then conducting it to the lower heat sink 41, and finally discharged by the external circulation mechanism 4. This dual heat dissipation system not only improves the heat dissipation efficiency, but also effectively reduces the temperature inside the equipment and avoids local heat accumulation. The internal circulation mechanism 3 conducts the heat from the projection mechanism 2 to the upper heat sink 31, and then to the lower heat sink 41, and finally discharged by the external circulation, forming an effective heat conduction path, which can achieve efficient heat dissipation without introducing outside air, so that the projector can maintain a low temperature even in a closed structure.

[0030] 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 longitudinally flowing heat dissipation structure of an internal circulating airflow in a projector, characterized in that: It includes a projector housing, a projection mechanism and an internal circulation mechanism are installed inside the projector housing, and an external circulation mechanism is installed on the bottom surface of the projector housing; the external circulation mechanism includes a lower heat sink, and the lower heat sink is fixedly installed on the bottom surface of the projector housing, and an external circulation fan is fixedly installed on the bottom surface of the lower heat sink, and the side of the external circulation fan is connected to an exhaust duct, and the inner side of the exhaust duct is fixedly installed with an external heat sink.

2. The longitudinal flow heat dissipation structure of the projector internal circulating airflow according to claim 1, characterized in that: The exhaust duct is a trumpet-shaped structure, and the right opening of the exhaust duct is larger than the left opening.

3. The longitudinal flow heat dissipation structure of the projector internal circulating airflow according to claim 1, characterized in that: The projection mechanism includes a light source fixedly mounted on the side of the projector housing. A reflector is fixedly mounted on the inner wall of the projector housing. A projection lens is fixedly mounted on the surface of the projector housing.

4. The longitudinally flowing heat dissipation structure of the projector internal circulating airflow according to claim 1, characterized in that: The left and right sides of the lower heat sink are exposed to the outside.

5. The longitudinal flow heat dissipation structure of the projector internal circulating airflow according to claim 1, characterized in that: The internal circulation mechanism includes an upper heat sink fixedly mounted on the top surface of the lower heat sink, an internal circulation fan fixedly mounted on the top surface of the projector housing, and an air guide plate fixedly mounted on the inner side of the internal circulation fan.

6. The longitudinally flowing heat dissipation structure of the projector internal circulating airflow according to claim 5, characterized in that: Reinforcing ribs are fixedly mounted on the surface of the upper heat sink, and the reinforcing ribs are distributed on the surface of the upper heat sink in a cross-staggered shape.

7. The longitudinally flowing heat dissipation structure of the projector internal circulating airflow according to claim 5, characterized in that: The upper heat sink and the lower heat sink are not connected.

8. The longitudinally flowing heat dissipation structure of the projector internal circulating airflow according to claim 5, characterized in that: The material of the air guide plate is PP plastic.

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