Closed efficient double-engine heat dissipation device

Abstract

The utility model relates to a closed efficient double-engine heat dissipation device which comprises a shell, a containing cavity is formed in the shell, a light source assembly is arranged at the bottom of the containing cavity, a rear lens, heat insulation glass, an LCD screen and a front lens are sequentially arranged above the light source assembly at intervals from bottom to top, and the vertical central axis of the rear lens, the vertical central axis of the heat insulation glass, the vertical central axis of the LCD screen and the vertical central axis of the front lens coincide. And the top of the accommodating cavity is connected with a reflecting mirror above the front lens. The utility model relates to the technical field of closed optical machines. According to the closed efficient double-engine heat dissipation device, through the arrangement of the L-shaped sleeve shell, the first turbofan, the first heat dissipation device and the second heat dissipation device, precise heat dissipation can be conducted on two heating sources of an optical machine in cooperation with internal circulation heat dissipation of the optical machine, heat of an internal air path can be taken away while heat dissipation is conducted on the external air path, use of a fan is reduced, and operation noise is remarkably reduced; the heat dissipation efficiency of the ray machine can be effectively improved, and the service life of the ray machine is prevented from being affected by heat accumulation caused by circulating heat dissipation in the ray machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtight light machine technical field especially airtight high -efficient double engine heat abstractor. BACKGROUND

[0002] Airtight light machine is an important design in modern projector technology, mainly used for improving the performance and durability of the projector. The biggest feature of airtight light machine is that a completely closed structure is formed inside its optical path. This design effectively isolates dust and moisture in the external air, thereby reducing pollution and damage to optical elements. In this closed environment, heat dissipation mainly relies on internal air circulation and heat conduction technology.

[0003] In the prior art, the heat dissipation of the airtight light machine can only be achieved by circulating air between the light source and the optical components to carry away the generated heat, and finally the heat is conducted to the outside by the machine body as a medium. This heat dissipation method is effective at the beginning of the light machine operation, but as the running time of the light machine increases, the heat that cannot be completely discharged by the internal circulation will gradually accumulate, causing the temperature of the internal circulation air to gradually increase, reducing the temperature difference between the air and the light source and optical components, and making the internal circulation air worse at dissipating the heat generated by the light source and optical components subsequently. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide an airtight high -efficient double engine heat abstractor to solve the technical problems mentioned in the background.

[0005] The above technical purpose of the utility model is achieved by the following technical scheme:

[0006] The airtight high -efficient double engine heat abstractor comprises a shell, a receiving cavity is formed in the shell, a light source assembly is arranged at the bottom of the receiving cavity, a rear lens, a heat insulation glass, an LCD screen and a front lens are sequentially and spacedly arranged above the light source assembly from bottom to top, the vertical central axes of the rear lens, the heat insulation glass, the LCD screen and the front lens coincide, a reflecting mirror is connected above the front lens at the top of the receiving cavity, a lens for receiving the reflected light source of the reflecting mirror is fixedly connected at the left side of the top of the shell, an internal circulation unit is arranged at the left side of the light source assembly in the receiving cavity, an L-shaped shell is fixedly connected to the lower left corner of the shell, a space for air flow is left between the L-shaped shell and the shell to form an external circulation air duct, a turbine fan one is fixedly connected in the external circulation air duct, a first radiator is arranged at the air inlet side of the turbine fan one, heat dissipation fins are arranged on both sides of the first radiator, the heat dissipation fins on one side pass through the shell and are connected to the internal circulation unit, the heat dissipation fins on the other side are arranged in the external circulation air duct, a second radiator is fixedly connected to the bottom of the light source assembly at the air outlet side of the turbine fan one.

[0007] Further, the inner circulation unit comprises a partition plate, the accommodating cavity is vertically provided with a partition plate, the front and rear sidewalls of the partition plate are fixedly connected with the front and rear sidewalls of the accommodating cavity, the left side of the partition plate is in contact with the heat dissipation fins, the bottom of the partition plate is provided with a circular hole, and spaces for air flow are reserved between the top of the partition plate and the accommodating cavity, so that the left side space of the partition plate, the circular hole, the right side space of the partition plate and the top space of the partition plate form an inner circulation air channel for air flow.

[0008] Further, the right sidewall of the accommodating cavity is recessed to the right at a position between the front lens and the rear lens, so that spaces for air flow are reserved on the right side of the heat insulation glass and the LCD screen to form a U-shaped backflow air channel.

[0009] Further, the top of the partition plate is curved to the right to form an arc-shaped part in contact with the optical assembly, and the side, away from the partition plate, of the arc-shaped part is fixedly connected with the left side of the LCD screen, so that the U-shaped backflow air channel accesses the inner circulation air channel.

[0010] Further, the right side of the partition plate is fixedly connected with a second turbine fan blowing upward, and the air inlet side of the second turbine fan is aligned with the position of the circular hole.

[0011] In summary, the utility model has at least one of the following beneficial technical effects:

[0012] 1. The closed and efficient double-engine heat dissipation device can cooperate with the inner circulation heat dissipation of the light machine to precisely dissipate heat of the two heat sources of the light machine, can take away the heat of the internal air path while dissipating heat of the external air path, reduces the use of the fan, significantly reduces the operation noise, effectively improves the heat dissipation efficiency of the light machine, and avoids the influence of the service life of the light machine caused by the inner circulation heat dissipation of the light machine.

[0013] 2. The closed and efficient double-engine heat dissipation device can make the accommodating cavity have a reasonable closed cooling circulation air path, ensure efficient operation of the optical assembly in the projector, design a high-efficiency heat dissipation system, and rapidly take away the heat of the internal heat through the external circulation air path. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0015] Figure 1This is a schematic diagram of the structure of the sealed, high-efficiency dual-engine cooling device of this utility model.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the L-shaped casing in an upward view of the sealed high-efficiency dual-engine heat dissipation device of this utility model.

[0017] Figure 3 This is a three-dimensional structural schematic diagram of the shell of the sealed high-efficiency dual-engine heat dissipation device of this utility model from the perspective of the right side.

[0018] Figure 4 This is a side view of the sealed, high-efficiency dual-engine cooling device of this utility model.

[0019] Figure 5 This is a schematic diagram of the partition plate in the sealed high-efficiency dual-engine heat dissipation device of this utility model.

[0020] In the diagram, 1. Housing; 2. Receiving cavity; 3. Light source assembly; 31. LED light; 32. Light chamber; 4. Rear lens; 5. Heat-insulating glass; 6. LCD screen; 7. Front lens; 8. Reflector; 9. Lens; 10. Internal circulation unit; 101. Partition; 102. Arc-shaped part; 11. L-shaped casing; 12. External circulation air passage; 13. Turbine fan one; 14. First radiator; 15. Heat dissipation fins; 16. Second radiator; 17. Round hole; 18. Internal circulation air passage; 19. U-shaped return air passage; 20. Turbine fan two. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings. Example

[0022] Reference Figure 1 - Figure 5The present invention discloses a sealed, high-efficiency dual-engine heat dissipation device, comprising a housing 1, an accommodating cavity 2 within the housing 1, a light source assembly 3 at the bottom of the accommodating cavity 2, and a rear lens 4, a heat-insulating glass 5, an LCD screen 6, and a front lens 7 arranged sequentially from bottom to top above the light source assembly 3, with the vertical central axes of the rear lens 4, heat-insulating glass 5, LCD screen 6, and front lens 7 coinciding. A reflector 8 is connected to the top of the accommodating cavity 2 above the front lens 7. A lens 9 for receiving the reflected light from the reflector is fixedly connected to the top left side of the housing 1. An internal circulation unit 10 is arranged inside the accommodating cavity 2 to the left of the light source assembly 3. An L-shaped housing 11 is fixedly connected to the lower left corner of the housing 1. A space for airflow is left between the L-shaped housing 11 and the housing 1 to form an external circulation air passage 12. A turbine fan 13 is fixedly connected inside the external circulation air passage 12. A first radiator 14 is provided on the air intake side of the turbine fan 13. Heat dissipation fins 15 are provided on both sides of the first radiator 14. One heat dissipation fin 15 passes through the housing 1 and is connected to the internal circulation unit 10. The other heat dissipation fin 15 is located inside the external circulation air passage 12. A second radiator 16 is provided on the exhaust side of the turbine fan 13. The second radiator 16 is fixedly connected to the bottom of the light source assembly 3.

[0023] In this embodiment, observation Figure 1 and Figure 3 It can be observed that by setting up a housing 1, a receiving cavity 2 is opened inside the housing 1, and a light source assembly 3 is installed at the bottom of the receiving cavity 2. Above the light source assembly 3, a rear lens 4, a heat-insulating glass 5, an LCD screen 6, and a front lens 7 are arranged sequentially from bottom to top. The vertical central axes of the rear lens 4, the heat-insulating glass 5, the LCD screen 6, and the front lens 7 coincide. A reflector 8 is connected to the top of the receiving cavity 2 above the front lens 7. A lens 9 for receiving the light source reflected by the reflector is fixedly connected to the top left side of the housing 1. This can isolate the components inside the optical engine from the outside world, so that the internal optical components of the optical engine will not be contaminated when the optical engine is running. This effectively prevents the problem of blurry images or color distortion caused by dust accumulation during the use of the projector.

[0024] At the same time Figure 3 It can be seen that the light source component 3 is mainly composed of LED lamp 31 and light box 32. This design can effectively improve the brightness of the light source, thereby improving the projection brightness of the optical engine. When the optical engine is in use, the light emitted by the LED lamp 31 is focused by the light box 32 and then passes through the rear lens 4 and heat insulation glass 5 in sequence to hit the LCD screen 6. The pattern on the LCD screen 6 is transmitted to the lens 9 by the front lens 7 and the reflector 8, and then the image is magnified and projected onto the screen by the lens 9.

[0025] Among them, the rear lens 4 and the front lens 7 mentioned above are both Fresnel lenses, which can effectively improve the utilization rate of light and the projection effect.

[0026] And because the optical machine is closed, the heat generated by the optical machine during use cannot be directly discharged, so in Figure 3 It can be found that the inner circulation unit 10 is arranged on the right side of the light source assembly 3, which can be used to guide the hot air to the left side wall of the accommodating cavity 2. Then the L-shaped sleeve 11 is fixedly connected to the lower left corner of the shell 1, and a space for air flow is left between the L-shaped sleeve 11 and the shell 1 to form an outer circulation air duct 12. The turbine fan one 13 is fixedly connected in the outer circulation air duct 12, and the first radiator 14 is arranged on the air inlet side of the turbine fan one 13. The heat dissipation fins 15 are arranged on both sides of the first radiator 14. One side of the heat dissipation fins 15 penetrates the shell 1 and is connected with the inner circulation unit 10, and the other side of the heat dissipation fins 15 is arranged in the outer circulation air duct 12. At this time, we can find that the hot air guided into the left side of the accommodating cavity 2 will contact the heat dissipation fins 15 of the first radiator 14. The heat dissipation fins 15 and the hot air are in high-speed heat exchange, so that the heat in the accommodating cavity 2 is discharged in a large amount, and then the heat dissipation fins 15 of the first radiator 14 exposed outside the shell 1 discharge the heat, which can effectively improve the heat dissipation efficiency of the closed optical machine, thereby ensuring the use stability of the closed optical machine.

[0027] And because the optical machine in operation will emit heat except the imaging assembly (such as the LCD screen 6), the LED lamp 31 will also heat up, so in Figure 3 It can also be seen that the second radiator 16 is arranged on the air outlet side of the turbine fan one 13, and the second radiator 16 is fixedly connected to the bottom of the light source assembly 3. At this time, the closed and efficient double-engine heat dissipation device is as shown in Figure 4 A is the air circulation direction outside, and B is the circulation direction inside the optical machine. When the turbine fan one 13 operates, the air is sucked in through the fins of the first radiator 14 for heat dissipation inside the optical machine, and then the sucked air is discharged through the fins of the second radiator 16, which can be used to carry away the heat generated by the LED lamp 31. The external air path is cooled at the same time, and the heat of the internal air path is carried away, reducing the use of the fan and significantly reducing the operating noise.

[0028] In further preferable embodiments of the present application, as shown in Figure 3 Figure 5 ​As shown, the inner circulation unit 10 comprises a partition 101, the partition 101 is vertically arranged in the accommodating cavity 2, the front and rear sidewalls of the partition 101 are fixedly connected with the front and rear sidewalls of the accommodating cavity 2 respectively, the left side of the partition 101 is in contact with the heat dissipation fin 15, the bottom of the partition 101 is provided with a circular hole 17, and the space between the top of the partition 101 and the accommodating cavity 2 is used for air flow, so that the left side space of the partition 101, the circular hole 17, the right side space of the partition 101 and the top space of the partition 101 form an inner circulation air channel 18 for air flow.

[0029] The right sidewall of the accommodating cavity 2 is recessed rightwards at a position between the front lens 7 and the rear lens 4, so that the right side of the heat insulation glass 5 and the LCD screen 6 leaves a space for air flow to form a U-shaped backflow air channel 19.

[0030] The top of the partition 101 is curved rightwards to form an arc-shaped part 102 in contact with the optical assembly, the side of the arc-shaped part 102 away from the partition 101 is fixedly connected with the left side of the LCD screen 6, so that the U-shaped backflow air channel 19 is connected to the inner circulation air channel 18.

[0031] The partition 101 is fixedly connected with a turbine blower two 20 blowing upwards, and the air inlet side of the turbine blower two 20 is aligned with the position of the circular hole 17.

[0032] In this embodiment, it is observed that Figure 3 It can be found that by making the inner circulation unit 10 mainly composed of the partition 101, the partition 101 is vertically arranged in the accommodating cavity 2, the front and rear sidewalls of the partition 101 are fixedly connected with the front and rear sidewalls of the accommodating cavity 2 respectively, the left side of the partition 101 is in contact with the heat dissipation fin 15, the bottom of the partition 101 is provided with a circular hole 17, and the space between the top of the partition 101 and the accommodating cavity 2 is used for air flow, so that the left side space of the partition 101, the circular hole 17, the right side space of the partition 101 and the top space of the partition 101 form an inner circulation air channel 18 for air flow, at this time, the heat emitted by the LCD screen 6 heats the left side space of the accommodating cavity 2, and then the high-temperature air is in contact with the heat dissipation fin 15 to rapidly exchange heat, so that the high-temperature air is changed into low-temperature air. The density of the low-temperature air is greater than that of the high-temperature air, so that the air after heat exchange will sink, and in the sinking process of the low-temperature air, the air at the right bottom of the partition 101 will continue to exchange heat with the hot air above, so that the air at the right side of the partition 101 is warmed and moves upwards, so that the left air sinks and the right air moves upwards, which realizes the process of circulating heat exchange of the inner circulation air channel 18, and can be used for discharging the heat of the LCD screen 6 out of the optical machine.

[0033] And because the lens is arranged above and below the LCD screen 6, it is difficult for the air to exchange heat on the right side of the LCD screen 6, which makes the heat dissipation of the LCD screen 6 uneven, affecting the heat dissipation effect of the LCD screen 6. Therefore, in combination with Figure 3 and Figure 4 It can also be found that the right side wall of the accommodating cavity 2 is recessed to the right between the front lens 7 and the rear lens 4, leaving a space for air flow on the right side of the heat insulation glass 5 and the LCD screen 6 to form a U-shaped backflow air channel 19, so that the air exchange can pass through the U-shaped backflow air channel 19, which can improve the heat exchange effect of the LCD screen 6. By bending the top of the partition plate 101 to the right to form an arc-shaped part 102 in contact with the optical assembly, the side of the arc-shaped part 102 away from the partition plate 101 is fixedly connected to the left side of the LCD screen 6, so that the U-shaped backflow air channel 19 is connected to the inner circulation air channel 18, so that the air in the accommodating cavity 2 circulates as shown in the state of B in the figure, so that the air flows in one direction and can stably pass through the U-shaped backflow air channel 19, which can further improve the heat exchange effect of the LCD screen 6. Figure 4

[0034] Finally, in combination with Figure 4 and Figure 5 It can be found that the turbine blower two 20 fixedly connected to the right side of the partition plate 101 blows upward, and the air inlet side of the turbine blower two 20 is aligned with the position of the circular hole 17, so that the air circulation and heat dissipation in the light machine can accelerate the flow speed of the air by the operation of the turbine blower two 20, thereby improving the heat exchange efficiency of the air and further improving the heat dissipation effect of the light machine.

[0035] The implementation principle of the above embodiment is that when the light machine is running, the turbine blower two 20 in the accommodating cavity 2 starts, the air inlet side of the turbine blower two 20 inhales air through the circular hole 17, and then discharges the inhaled air upward through the air outlet side. The discharged air flows upward on the right side of the partition plate 101, and then enters the LCD screen 6 area after being dragged by the arc-shaped part 102, and then backflows to the left side of the partition plate 101 through the U-shaped backflow air channel 19. At this time, the backflow air takes away the heat of the LCD screen 6, and then the high-temperature air contacts the heat dissipation fins 15 of the first heat sink 14 after entering the left side of the partition plate 101, and the heat in the first heat sink 14 is discharged to the first heat sink 14 through the heat dissipation fins 15 outside the shell 1. At the same time, the air inlet side of the turbine blower one 13 synchronously running with the turbine blower two 20 inhales air, so that the air passes through the heat dissipation fins 15 of the first heat sink 14 outside the shell 1, taking away the heat in the first heat sink 14, thereby realizing efficient heat dissipation of the light machine.

[0036] ​When the turbine fan 13 blows air, the high-speed flowing air will pass through the second radiator 16, and the second radiator 16 is connected with the LED lamp 31, so that the air passing through the second radiator 16 at high speed can radiate heat for the LED lamp 31, and the heat source of the light machine can be precisely radiated.

[0037] The embodiments of the specific implementation are the preferred embodiments of the utility model, not limited to the protection scope of the utility model, so that: all equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A sealed, high-efficiency dual-engine heat dissipation device, comprising a housing (1), a receiving cavity (2) inside the housing (1), a light source assembly (3) at the bottom of the receiving cavity (2), a rear lens (4), a heat-insulating glass (5), an LCD screen (6) and a front lens (7) arranged sequentially from bottom to top above the light source assembly (3), the vertical central axes of the rear lens (4), the heat-insulating glass (5), the LCD screen (6) and the front lens (7) coinciding, a reflector (8) connected to the top of the receiving cavity (2) above the front lens (7), and a lens (9) for receiving the light source reflected by the reflector fixedly connected to the top left side of the housing (1), characterized in that, An internal circulation unit (10) is provided in the cavity (2) on the left side of the light source assembly (3). An L-shaped sleeve (11) is fixedly connected to the lower left corner of the housing (1). A space for air flow is left between the L-shaped sleeve (11) and the housing (1) to form an external circulation air passage (12). A turbine fan (13) is fixedly connected in the external circulation air passage (12). A first radiator (14) is provided on the air intake side of the turbine fan (13). Heat dissipation fins (15) are provided on both sides of the first radiator (14). One heat dissipation fin (15) passes through the housing (1) and is connected to the internal circulation unit (10). The other heat dissipation fin (15) is located in the external circulation air passage (12). A second radiator (16) is provided on the exhaust side of the turbine fan (13). The second radiator (16) is fixedly connected to the bottom of the light source assembly (3).

2. The sealed high-efficiency dual-engine heat dissipation device according to claim 1, characterized in that, The internal circulation unit (10) includes a partition (101). A partition (101) is vertically arranged inside the receiving cavity (2). The front and rear side walls of the partition (101) are fixedly connected to the front and rear side walls of the receiving cavity (2), respectively. The left side of the partition (101) is in contact with the heat dissipation fins (15). A round hole (17) is opened at the bottom of the partition (101). A space for air flow is left between the top of the partition (101) and the receiving cavity (2), so that the left side space of the partition (101), the round hole (17), the right side space of the partition (101) and the top space of the partition (101) form an internal circulation air passage (18) for air flow.

3. The sealed high-efficiency dual-engine heat dissipation device according to claim 2, characterized in that, The right side wall of the receiving cavity (2) is recessed to the right at the position between the front lens (7) and the rear lens (4), so that the right side of the heat insulation glass (5) and the LCD screen (6) has space for air flow, so as to form a U-shaped return air channel (19).

4. The sealed high-efficiency dual-engine heat dissipation device according to claim 3, characterized in that, The top of the partition (101) is curved to the right to form an arc-shaped portion (102) that contacts the optical components. The side of the arc-shaped portion (102) away from the partition (101) is fixedly connected to the left side of the LCD screen (6), so that the U-shaped return airway (19) is connected to the internal circulation airway (18).

5. The sealed high-efficiency dual-engine cooling device according to claim 4, characterized in that, The right side of the partition (101) is fixedly connected to an upward blowing turbine fan (20), and the air intake side of the turbine fan (20) is aligned with the position of the circular hole (17).

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