Multi-fan heat dissipation open type optical machine and LCD projector

Abstract

The utility model relates to a multi-fan heat dissipation open type optical machine and an LCD projector. The multi-fan heat dissipation open type optical machine comprises an optical machine shell, a first heat dissipation fan, a second heat dissipation fan and a bottom heat dissipation fan. An LCD screen is installed in the light machine shell, a heat dissipation air channel passing through the two sides of the LCD screen is formed in the light machine shell, the heat dissipation air channel is provided with an air inlet, a first air outlet and a second air outlet which are communicated with the outside, the air inlet and the first air outlet are located at the two opposite ends of the heat dissipation air channel in the horizontal direction, and the second air outlet is located at the bottom of the heat dissipation air channel in the vertical direction. According to the multi-fan heat dissipation open type optical machine, heat dissipation of the open type optical machine can be completed in a low-cost mode through the design of the air channels and the mutual cooperation effect of series connection of the fans under the condition that semiconductor chilling plates, a large number of radiators, liquid cooling and other heat dissipation modes are not used, airflow interference between the fans is avoided, smooth air flow is ensured, and the service life of the optical machine is prolonged. The heat dissipation efficiency is improved, the overall power consumption and size are reduced, and economy and high efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of LCD projection, in particular to a projection external wide-angle lens and a projection combined lens. Background Art

[0002] The projector's optical engine is the primary heat-generating component, so designing a heat dissipation structure for the engine is essential. Optical engines are generally categorized as closed and open. Closed engines have self-circulating air inside, isolated from the outside air, while traditional open engines require external air connection for heat dissipation.

[0003] The pursuit of high brightness output in open optical engines is often accompanied by a large amount of heat generation. Under the premise of limited cost and heat dissipation structure space, if the heat dissipation system is not properly designed, it will seriously affect the performance and life of the projector. In some existing technologies, the heat dissipation efficiency is improved by adding semiconductor cooling plates and other components inside the optical engine housing. However, this method not only has high power consumption, but also high cost, which is not conducive to reducing the cost of the entire machine.

[0004] Therefore, developing an efficient, compact, and low-cost heat dissipation system is crucial to improving the overall performance of open optical machines. Utility Model Content

[0005] Based on this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide an open optical machine and LCD projector with multiple fans for heat dissipation.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A multi-fan heat dissipation open optical machine, comprising:

[0008] Optical machine housing, first heat dissipation fan, second heat dissipation fan and bottom heat dissipation fan;

[0009] An LCD screen is installed in the optical mechanical housing, and a heat dissipation duct is formed in the optical mechanical housing and passes through both sides of the LCD screen. The heat dissipation duct has an air inlet connected to the outside, a first air outlet, and a second air outlet. The air inlet and the first air outlet are located at opposite ends of the heat dissipation duct in the horizontal direction, and the second air outlet is located at the bottom of the heat dissipation duct in the vertical direction.

[0010] The air outlet of the first heat dissipation fan is connected to the air inlet through a first air guide structure, the air inlet of the second heat dissipation fan is connected to the first air outlet through a second air guide structure, and the bottom heat dissipation fan is installed at the second air outlet.

[0011] The multi-fan cooling open optical machine of the present application can complete the heat dissipation of the open optical machine in a low-cost manner through the design of the air duct and the mutual cooperation of the fans in series without using semiconductor refrigeration sheets, a large number of radiators, liquid cooling and other cooling methods, avoiding airflow interference between fans, ensuring smooth air flow, improving heat dissipation efficiency, reducing overall power consumption and volume, being economical and efficient, and ensuring safe and stable operation. The open optical machine of the present application can be widely used in various projectors.

[0012] As an embodiment, the multi-fan heat dissipation open light machine also includes a light source module and a light source radiator for dissipating heat to the light source module. The light source module is used to emit light to the LCD screen. The air outlet direction of the bottom heat dissipation fan is toward the light source module. The air outlet of the second heat dissipation fan is provided with a third air guide structure, and the third air guide structure is used to guide air to the light source radiator.

[0013] As an embodiment, the multi-fan heat dissipation open optical engine further includes a power supply board, and the power supply board is arranged adjacent to the air outlet of the bottom heat dissipation fan.

[0014] As an embodiment, the light source module includes an LED light source, a light funnel and a light funnel shell. An opening is provided on the side wall of the optical machine shell corresponding to the LCD screen. The light funnel shell is installed at the opening. The light funnel is arranged in the light funnel shell. The light outlet of the light funnel faces the LCD screen, and the light inlet of the light funnel is arranged at the LED light source.

[0015] As an embodiment, the light source heat sink includes a cold-end heat sink and a hot-end heat sink connected to conduct heat, the cold-end heat sink is in contact with the LED light source, the third air guide structure is used to guide air to the cold-end heat sink, and the hot-end heat sink is located on one side of the cold-end heat sink.

[0016] As an embodiment, the multi-fan heat dissipation open optical engine further includes a third heat dissipation fan, which is arranged on one side of the hot-end radiator and is used to cool the hot-end radiator.

[0017] As an embodiment, the third heat dissipation fan is located between the hot-end radiator and the bottom heat dissipation fan, and an air outlet of the third heat dissipation fan faces the hot-end radiator.

[0018] As an embodiment, the first heat dissipation fan, the second heat dissipation fan and the bottom heat dissipation fan are all vortex fans.

[0019] The present application provides an LCD projector, which includes a housing and the above-mentioned multi-fan heat dissipation open optical engine installed in the housing, and the housing is provided with a plurality of ventilation holes.

[0020] As an embodiment, a filter is provided at the ventilation hole, and the filter is used to filter the air passing through the ventilation hole.

[0021] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of an open optical machine with multiple fans for heat dissipation from one perspective in an embodiment of the present application;

[0023] Figure 2 This is a structural diagram of an open optical machine with multiple fans for heat dissipation from another perspective in an embodiment of the present application;

[0024] Figure 3 This is a horizontal cross-sectional diagram of an open optical engine with multiple fans for heat dissipation in an embodiment of the present application;

[0025] Figure 4 A vertical cross-sectional diagram of an open optical engine with multiple fans for heat dissipation according to an embodiment of the present application;

[0026] Figure 5 This is a schematic structural diagram of an LCD projector in an embodiment of the present application;

[0027] Description of reference numerals:

[0028] 1. Optical machine housing; 10. Cooling air duct; 11. Air inlet; 12. First air outlet; 13. Second air outlet; 14. First air guide structure; 15. Second air guide structure; 16. Third air guide structure; 21. First cooling fan; 22. Second cooling fan; 23. Third cooling fan; 24. Bottom cooling fan; 3. LCD screen; 4. Light source module; 41. LED light source; 42. Light funnel; 43. Light funnel housing; 5. Light source radiator; 51. Cold end radiator; 52. Hot end radiator; 6. Power board; 7. Housing; 71. Ventilation hole. DETAILED DESCRIPTION

[0029] To further illustrate various embodiments, this utility model is provided with accompanying drawings. These drawings form part of the disclosure of this utility model and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will be able to understand other possible implementations and the advantages of this utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0031] See also Figures 1 to 5 This embodiment provides an open optical machine with multiple fans for heat dissipation, including an optical machine housing 1 , a first heat dissipation fan 21 , a second heat dissipation fan 22 and a bottom heat dissipation fan 24 .

[0032] The optical machine housing 1 houses an LCD screen 3 for displaying image information. As the primary heat generator in the optical machine, its heat dissipation directly impacts the overall performance of the machine. In this embodiment, the optical machine housing 1 includes a heat dissipation duct 10 passing through both sides of the LCD screen 3. The heat dissipation duct 10 includes an air inlet 11, a first air outlet 12, and a second air outlet 13, both of which communicate with the outside. The air inlet 11 and the first air outlet 12 are located at opposite ends of the heat dissipation duct 10 in the horizontal direction, while the second air outlet 13 is located at the bottom of the heat dissipation duct 10 in the vertical direction.

[0033] The air outlet of the first heat dissipation fan 21 is connected to the air inlet 11 through the first air guide structure 14. The air inlet 11 of the second heat dissipation fan 22 is connected to the first air outlet 12 through the second air guide structure 15. The bottom heat dissipation fan 24 is installed at the second air outlet 13. When the optical engine is running, the first heat dissipation fan 21 can suck in external air and blow it into the heat dissipation duct 10 through the first air guide structure 14. When the air flows through both sides of the LCD screen 3, it absorbs heat and heats up, thereby taking away the heat of the LCD screen 3. A part of the heated air is sucked in horizontally from the first air outlet 12 by the second heat dissipation fan 22 and discharged.

[0034] The air exits the optical machine housing 1, and the other part is sucked into the bottom heat dissipation fan 24 from the second air outlet 13 in the vertical direction and discharged outside the optical machine housing 1. It can be seen that the air can continuously flow into the heat dissipation duct 10 and flow out of the heat dissipation duct 10 in both horizontal and vertical directions, thereby efficiently dissipating the heat of the LCD screen 3.

[0035] It will be appreciated that, through the above arrangement, air flowing into the heat dissipation duct 10 can be evenly distributed over the LCD screen 3, significantly increasing the heat dissipation area. Furthermore, the two heat dissipation fans discharge air from the heat dissipation duct 10, increasing the air output. Under the influence of pressure, the air intake volume also increases accordingly. This configuration can increase the air volume of all fans, thereby maximizing fan efficiency and effectively reducing the temperature of components such as the LCD screen 3. Thus, the multi-fan heat dissipation open optical engine of this embodiment can enhance heat dissipation while maintaining a compact internal structure of the optical engine housing 1, saving internal space. The second heat dissipation fan 22 and the bottom heat dissipation fan 24 each rapidly exhaust air from the heat dissipation duct 10, ensuring an optimal air flow rate.

[0036] The multi-fan cooling open optical machine of the present application can complete the heat dissipation of the open optical machine in a low-cost manner through the design of the air duct and the mutual cooperation of the fans in series without using semiconductor refrigeration sheets, a large number of radiators, liquid cooling and other cooling methods, avoiding airflow interference between fans, ensuring smooth air flow, improving heat dissipation efficiency, reducing overall power consumption and volume, being economical and efficient, and ensuring safe and stable operation. The open optical machine of the present application can be widely used in various projectors.

[0037] Specifically, the open optical engine of this embodiment further includes a power board 6, which is used to provide power to the cooling fan and LCD screen 3. The power board 6 is positioned adjacent to the air outlet of the bottom cooling fan 24. As a result, some of the air exhausted by the bottom cooling fan 24 also dissipates heat for the power board 6. This demonstrates that by rationally arranging the components, the overall cooling efficiency can be improved with the existing number of cooling fans.

[0038] Specifically, the open optical machine of this embodiment also includes a light source module 4 and a light source heat sink 5 for dissipating heat from the light source module 4. The light source module 4 is used to emit light toward the LCD screen 3. The air outlet of the bottom heat dissipation fan 24 is directed toward the light source module 4, ensuring a reasonable layout of the optical machine components. The air outlet of the second heat dissipation fan 22 is provided with a third air guide structure 16, which is used to guide air to the light source heat sink 5. As a result, the air discharged by the second heat dissipation fan 22 can also remove some heat from the light source heat sink 5, thereby improving the heat dissipation efficiency of the light source heat sink 5. In this embodiment, the first air guide structure 14, the second air guide structure 15, and the third air guide structure 16 are all part of the optical machine housing 1, and are formed by the cooperation of several walls.

[0039] The light source module 4 of this embodiment includes an LED light source 41, a light funnel 42, and a light funnel housing 43. An opening is provided on the side wall of the optical mechanism housing 1 corresponding to the LCD screen 3. The light funnel housing 43 is mounted in the opening. The light funnel 42 is disposed within the light funnel housing 43. The light outlet of the light funnel 42 faces the LCD screen 3, and the light inlet of the light funnel 42 is disposed at the LED light source 41. This arrangement facilitates installation of the light source module 4.

[0040] Preferably, the light source heat sink 5 includes a cold-end heat sink 51 and a hot-end heat sink 52 connected to conduct heat. The cold-end heat sink 51 is in contact with the LED light source 41. The third air guide structure 16 is used to guide air to the cold-end heat sink 51. The hot-end heat sink 52 is located on one side of the cold-end heat sink 51. In other words, the air exhausted by the second heat dissipation fan 22 removes heat from the cold-end heat sink 51, thereby improving the heat dissipation efficiency of the light source heat sink 5.

[0041] Preferably, the multi-fan heat dissipation open optical machine of this embodiment also includes a third heat dissipation fan 23, which is arranged on one side of the hot-end radiator 52 and is used to cool the hot-end radiator 52, so that the heat of the hot-end radiator 52 can be quickly taken away to ensure the normal operation of the light source module 4.

[0042] The third cooling fan 23 is located between the hot-end radiator 52 and the bottom cooling fan 24, with its outlet facing the hot-end radiator 52. As a result, part of the air exhausted by the bottom cooling fan 24 is directly drawn into the third cooling fan 23 and blown toward the hot-end radiator 52 for heat dissipation. The remaining air passes through the power board 6, removes heat, and is then drawn into the third cooling fan 23 and blown toward the hot-end radiator 52 for heat dissipation. This arrangement ensures stable air flow outside the optical machine housing 1, a rational layout, and high heat dissipation efficiency.

[0043] In order to improve the space utilization of the open optical machine in this embodiment, preferably, the first heat dissipation fan 21, the second heat dissipation fan 22 and the bottom heat dissipation fan 24 in this embodiment are all vortex fans, and the third heat dissipation fan 23 is an axial fan.

[0044] This embodiment further provides an LCD projector, comprising a housing 7 and the multi-fan heat dissipation open optical engine described above, mounted within the housing 7. The housing 7 is provided with a plurality of ventilation holes 71. The ventilation holes 71 allow air delivered by a first heat dissipation fan 21, a second heat dissipation fan 22, a third heat dissipation fan 23, and a bottom heat dissipation fan 24 to flow. A projector employing the open optical engine of the embodiment of the present invention is advantageous in its miniaturized design, and features excellent heat dissipation, low power consumption, and low cost.

[0045] Preferably, a filter is provided at the ventilation hole 71, and the filter is used to filter the air passing through the ventilation hole 71. This can prevent the air entering the projector from contaminating the LCD screen 3, thereby increasing the service life.

[0046] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An open optical machine with multiple fans for heat dissipation, characterized in that: include: Optical machine housing, first heat dissipation fan, second heat dissipation fan and bottom heat dissipation fan; An LCD screen is installed in the optical mechanical housing, and a heat dissipation duct is formed in the optical mechanical housing and passes through both sides of the LCD screen. The heat dissipation duct has an air inlet connected to the outside, a first air outlet, and a second air outlet. The air inlet and the first air outlet are located at opposite ends of the heat dissipation duct in the horizontal direction, and the second air outlet is located at the bottom of the heat dissipation duct in the vertical direction. The air outlet of the first heat dissipation fan is connected to the air inlet through a first air guide structure, the air inlet of the second heat dissipation fan is connected to the first air outlet through a second air guide structure, and the bottom heat dissipation fan is installed at the second air outlet.

2. The multi-fan heat dissipation open optical engine according to claim 1, characterized in that: It also includes a light source module and a light source radiator for dissipating heat from the light source module. The light source module is used to emit light to the LCD screen. The air outlet direction of the bottom heat dissipation fan is toward the light source module. The air outlet of the second heat dissipation fan is provided with a third air guide structure, and the third air guide structure is used to guide air to the light source radiator.

3. The multi-fan heat dissipation open optical engine according to claim 1, characterized in that: It also includes a power supply board, which is arranged adjacent to the air outlet of the bottom heat dissipation fan.

4. The multi-fan heat dissipation open optical engine according to claim 2, characterized in that: The light source module includes an LED light source, a light funnel and a light funnel shell. An opening is provided on the side wall of the optical machine shell corresponding to the LCD screen. The light funnel shell is installed at the opening. The light funnel is arranged in the light funnel shell. The light outlet of the light funnel faces the LCD screen, and the light inlet of the light funnel is arranged at the LED light source.

5. The multi-fan heat dissipation open optical engine according to claim 4, characterized in that: The light source radiator includes a cold end radiator and a hot end radiator connected to conduct heat, the cold end radiator is in contact with the LED light source, the third air guide structure is used to guide air to the cold end radiator, and the hot end radiator is located on one side of the cold end radiator.

6. The multi-fan heat dissipation open optical engine according to claim 5, characterized in that: It also includes a third heat dissipation fan, which is arranged on one side of the hot-end radiator and is used to cool the hot-end radiator.

7. The multi-fan heat dissipation open optical engine according to claim 6, characterized in that: The third heat dissipation fan is located between the hot end radiator and the bottom heat dissipation fan, and the air outlet of the third heat dissipation fan faces the hot end radiator.

8. The multi-fan heat dissipation open optical engine according to any one of claims 1 to 7, characterized in that: The first heat dissipation fan, the second heat dissipation fan and the bottom heat dissipation fan are all vortex fans.

9. An LCD projector, characterized in that: The invention comprises a housing and the multi-fan heat dissipation open optical engine according to any one of claims 1 to 8 installed in the housing, wherein the housing is provided with a plurality of ventilation holes.

10. The LCD projector according to claim 9, wherein: A filter is provided at the ventilation hole, and the filter is used to filter the air passing through the ventilation hole.

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