CN104898358B - Active dust-proof cooling device for projector and method thereof - Google Patents
Active dust-proof cooling device for projector and method thereof Download PDFInfo
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- CN104898358B CN104898358B CN201510242124.5A CN201510242124A CN104898358B CN 104898358 B CN104898358 B CN 104898358B CN 201510242124 A CN201510242124 A CN 201510242124A CN 104898358 B CN104898358 B CN 104898358B
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- projector
- temperature
- gangbar
- grid
- dust
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
Abstract
The present invention provides an active dust-proof cooling device for a projector and a method thereof. The device comprises an air inlet, an air outlet, a heat radiator, a fan array, a filtering screen and an active dust-proof cooling member. The filtering net is arranged at the air inlet. The active dust-proof cooling member is arranged at the air outlet. The heat radiator and the fan array are orderly arranged between the air inlet and the air outlet. When the projector is turned on to work, the active dust-proof cooling member is opened to realize heat radiation, and when the projector is turned off, the active dust-proof cooling member is closed to realize dust prevention. According to the device and the method, the filtering screen is used at the air inlet of the projector to carry out dust prevention, at the same time the air outlet is provided with the active dust-proof cooling member, the normal heat radiation problem of the projector in operation is solved, and the purpose of preventing dust from entering into the projector is realized.
Description
Technical field
The present invention relates to a kind of dustproof heat radiator, more particularly, to a kind of active dustproof heat radiator for projector, and it is related to a kind of active dust-proof radiating method for projector.
Background technology
At present, projector has been widely used in every field, because projector will distribute substantial amounts of heat at work, consider typically have perforate to be used for machine ventilation on the casing of projector for radiating, also radiated using many fans simultaneously, and high velocity air is likely to carry secretly small dust, may build up light source, colour wheel using dust, on the optics such as light path and engine for a long time, brightness and color is deteriorated, component life reduces；Meanwhile, the accumulation of dust also result in radiating bad, cause the system failure.
Heat radiation system of projector typically now is all open passive heat dissipation ventilation system; air-flow is made to flow through after radiator takes away heat from air intake vent by internal fan; discharge from air outlet; and air outlet often unprotected measure; but projector is in off working state; extraneous dust can be entered into inside machine by louvre, accumulates through long, also can affect the life-span of light source and optical system and efficiency when projector runs.
Content of the invention
The technical problem to be solved is to need to provide a kind of active dustproof heat radiator for projector, solve projector operationally can proper heat reduction, can prevent in inoperative dust enter projector within problem.
To this, the present invention provides a kind of active dustproof heat radiator for projector, including: air intake vent, air outlet, radiator, array fan, filter screen and active dust-proof radiating component, described filter screen is arranged at air intake vent, described active dust-proof radiating component is arranged at air outlet, and described radiator and array fan are set in turn between air intake vent and air outlet；Wherein, when projector's start work, active dust-proof radiating component is opened to realize radiating；During projector's shutdown, active dust-proof radiating component closure is dust-proof to realize.
The present invention is carried out dust-proof at the air intake vent of projector using filter screen, it is provided with active dust-proof radiating component in air outlet simultaneously, both solve the problems, such as projector's proper heat reduction operationally, also achieve the purpose preventing in inoperative dust from entering within projector.
Further improvement of the present invention is, described active dust-proof radiating component includes motor, balancing pole, gangbar and grid, described motor is connected with gangbar, and described gangbar is sleeved on balancing pole, and described grid is connected with gangbar and is rotatably installed on the cabinet of projector.Described motor controls the motion of grid by gangbar, and then realizes in projector's start work, and grid is opened to realize radiating；When projector shuts down, grid closes to realize dust-proof purpose, and on this basis, described gangbar realizes the balance of grid so that the dust-proof and fan thermal effect of entirety is stable and reliable by balancing pole.
Further improvement of the present invention is, described grid includes rotary shaft and universal driving shaft, and the rotary shaft on described grid is linked on cabinet, and described rotary shaft is connected with universal driving shaft by flange.Rotary shaft on described grid is linked on cabinet suitable fixed position, and it is rotatable to realize grid, meanwhile, realizes stable annexation by universal driving shaft and gangbar.
Further improvement of the present invention is, described gangbar is provided with sliding tray, and the universal driving shaft of described grid is placed in the sliding tray of gangbar.The sliding tray being matched with universal driving shaft is provided with described gangbar, the motion enabling to grid is more smoothly.
Further improvement of the present invention is, described motor is provided with threaded rod, and the middle part of described gangbar is provided with screwed hole, and described threaded rod is connected with screwed hole.When projector shuts down, motor can be controlled to reversely rotate threaded rod by software and drive gangbar to move to grid direction along the threaded rod direction of motor, grid rotates around rotary shaft, thus grid reverts to closure state simultaneously.
Further improvement of the present invention is, the balance when projector starts shooting, when gangbar keeps it mobile by the auxiliary of balancing pole, when gangbar is mobile, the universal driving shaft of grid moves in the sliding tray of gangbar, and grid rotates around rotary shaft simultaneously, so that grid becomes open mode；When projector shuts down, reversely rotating threaded rod by motor drives gangbar to move along the direction of threaded rod to grid direction, and meanwhile, gangbar keeps balance during its movement by the auxiliary of balancing pole, when gangbar is mobile, the universal driving shaft of grid moves in the sliding tray of gangbar；Grid rotates around rotary shaft simultaneously, so that grid reverts to closure state.
Further improvement of the present invention is, the quantity of described balancing pole is two, and described gangbar is sleeved on the smooth balancing pole of setting up and down two.
The present invention also provides a kind of active dust-proof radiating method for projector, and described active dust-proof radiating method employs the above-mentioned active dustproof heat radiator for projector, and comprises the following steps:
Start step, executes initialization, and receives the data input of temperature sensor after receiving starting-up signal；
Lowest temperature judges step, judges whether temperature is higher than minimum adjustment threshold temperature, if then jumping to temperature upper limit to judge step, if otherwise maintain the original state of active dust-proof radiating component by motor；
Temperature upper limit judges step, judges whether temperature adjusts threshold temperature higher than highest, if then the folding angle of active dust-proof radiating component is adjusted to maximum by motor, if otherwise jumping to temperature comparison step；
And, temperature comparison step, Current Temperatures are compared with minimum adjustment threshold temperature or previous temperature respectively, if temperature increase, increase the folding angle of active dust-proof radiating component by motor, if temperature reduces, reduce the folding angle of active dust-proof radiating component by motor.
Further improvement of the present invention is, in described start step, projector is pressed after key, starting-up signal is sent by mcu and opens relay, connect the whole electromechanical source of projector, described starting-up signal sends to fpga module, and the initial temperature in projector is passed to mcu by temperature sensor simultaneously, and temperature data is passed to fpga module by spi Serial Peripheral Interface (SPI) and realizes the monitoring to projector's temperature by described mcu；Described lowest temperature judges in step, and when temperature is not up to minimum adjustment threshold temperature, fpga module controls motor to drive gangbar to move a certain distance, and realizes 45 degree of the folding angle of original state；When the temperature monitoring is higher than highest 45 degrees Celsius of threshold temperature of adjustment, folding angle will be adjusted to 90 degree of maximum.
Further improvement of the present invention is, when the temperature monitoring is higher than minimum adjustment threshold temperature but during not higher than 45 degrees Celsius of threshold temperature of highest adjustment, Current Temperatures can be compared by fpga module with previous temperature, if Current Temperatures are higher than previous temperature, then often high 1 degree Celsius, folding angle will increase by 3 degree than previous folding angle；If Current Temperatures are lower than previous temperature, often low 1 degree Celsius, folding angle will reduce 3 degree than previous folding angle.
Compared with prior art, the beneficial effects of the present invention is: carried out dust-proof at the air intake vent of projector using filter screen, it is provided with active dust-proof radiating component in air outlet simultaneously, both solved the problems, such as projector's proper heat reduction operationally, also achieve the purpose preventing dust from entering within projector in inoperative, on this basis, according to the Current Temperatures of projector, real-time control can also be carried out to the folding angle of grid, and then reached that fan is warm, dust-proof and the effect of energy-conservation simultaneously, extend the life-span of projector, improve the operating efficiency of projector.
Brief description
Fig. 1 is the present invention: the positive structure schematic of embodiment 1；
Fig. 2 is the structure schematic diagram of the embodiment of the present invention 1；
Fig. 3 is the decomposition texture schematic diagram of the active dust-proof radiating component of the embodiment of the present invention 2；
Fig. 4 is the structural representation of the gangbar of the embodiment of the present invention 2；
Fig. 5 is the structural representation of the grid of the embodiment of the present invention 2；
Fig. 6 is the open mode schematic diagram of the grid of the embodiment of the present invention 2；
Fig. 7 is the closure state schematic diagram of the grid of the embodiment of the present invention 2；
Fig. 8 is the workflow schematic diagram of the embodiment of the present invention 3.
Specific embodiment
Below in conjunction with the accompanying drawings, the preferably embodiment of the present invention is described in further detail.
Embodiment 1:
As depicted in figs. 1 and 2, this example provides a kind of active dustproof heat radiator for projector, including: air intake vent 1, air outlet, radiator 2, array fan 3, filter screen and active dust-proof radiating component 4, described filter screen is arranged at air intake vent 1, described active dust-proof radiating component 4 is arranged at air outlet, and described radiator 2 and array fan 3 are set in turn between air intake vent 1 and air outlet；Wherein, when projector's start work, active dust-proof radiating component 4 is opened to realize radiating；During projector's shutdown, active dust-proof radiating component 4 closes dust-proof to realize.
This example is carried out dust-proof at the air intake vent 1 of projector using filter screen, it is provided with active dust-proof radiating component 4 in air outlet simultaneously, both solve the problems, such as projector's proper heat reduction operationally, also achieve the purpose preventing in inoperative dust from entering within projector.
Embodiment 2:
As shown in Figure 3, on the basis of embodiment 1, described in this example, active dust-proof radiating component 4 includes motor 5, balancing pole 6, gangbar 7 and grid 8, described motor 5 is connected with gangbar 7, described gangbar 7 is sleeved on balancing pole 6, and described grid 8 is connected with gangbar 7 and is rotatably installed on the cabinet of projector.
As shown in Figure 3, active dust-proof radiating component 4 described in this example preferably includes a motor 6, gangbar 7 of 4, two balancing poles and three to ten grids 8, described motor 5 controls the motion of grid 8 by gangbar 7, and then realizes in projector's start work, and grid 8 is opened to realize radiating；When projector shuts down, grid 8 closes to realize dust-proof purpose, and on this basis, described gangbar 7 realizes the balance of grid 8 so that the dust-proof and fan thermal effect of entirety is stable and reliable by balancing pole 6.
As shown in figure 5, grid 8 described in this example preferably includes rotary shaft 82 and universal driving shaft 81, the rotary shaft 82 on described grid 8 is linked on cabinet, and described rotary shaft 82 is connected with universal driving shaft 81 by flange 83.Rotary shaft 82 on described grid 8 is linked on cabinet suitable fixed position, and it is rotatable to realize grid 8, meanwhile, realizes stable annexation by universal driving shaft 81 and gangbar 7.Shown in Fig. 5 is the structural representation of a single grid 8.
As shown in Figure 3 and Figure 4, gangbar 7 described in this example is preferably provided with sliding tray 71, the universal driving shaft 81 of described grid 8 is placed in the sliding tray 71 of gangbar 7；The quantity of described balancing pole 6 is two, and described gangbar 7 is sleeved on the smooth balancing pole of setting up and down two 6 by through hole 73.The sliding tray 71 being matched with universal driving shaft 81 is provided with described gangbar 7, the motion enabling to grid 8 is more smoothly.
Threaded rod is additionally provided with motor 5 described in this example, the middle part of described gangbar 7 is provided with screwed hole 72, and described threaded rod is connected with screwed hole 72.When projector shuts down, motor 5 can be controlled to reversely rotate threaded rod by software and drive gangbar 7 to move to the direction of grid 8 along the threaded rod direction of motor 5, grid 8 rotates around rotary shaft 82, thus grid 8 reverts to closure state simultaneously；Because the service life of projector itself is longer, and this example realizes the movement of grid 8 by helicitic texture, ensure that the lasting effectiveness of active dust-proof radiating component 4, the service life of active dust-proof radiating component 4 can be extended, prevent projector from can also work and problem that active dust-proof radiating component 4 lost efficacy.
When projector starts shooting, balance when gangbar 7 keeps it mobile by two smooth balancing poles 6 being sleeved on upper and lower two through holes 73, when gangbar 7 is mobile, the universal driving shaft 81 of grid 8 moves in the sliding tray 71 of gangbar 7, grid 8 rotates around rotary shaft 82 simultaneously, so that grid 8 becomes open mode, the open mode structural representation of described grid 8 is as shown in Figure 6, now hot blast can be discharged by array fan 3 from the grid 8 opened, realize radiating purpose, the effect of grid 8 now is similar to air vent.
When projector shuts down, reversely rotating threaded rod by motor 5 drives gangbar 7 to move along the direction of threaded rod to the direction of grid 8, simultaneously, balance when gangbar 7 keeps it mobile by the auxiliary of balancing pole 6, when gangbar 7 is mobile, the universal driving shaft 81 of grid 8 moves in the sliding tray 71 of gangbar 7；Grid 8 rotates around rotary shaft 82 simultaneously so that grid 8 reverts to closure state, the closure state structural representation of described grid 8 as shown in fig. 7, now, the inside and outside isolation of projector, realize dust-proof purpose.
Embodiment 3:
As shown in figure 8, this example provides a kind of active dust-proof radiating method for projector, described active dust-proof radiating method employs the active dustproof heat radiator for projector described in embodiment 1 or embodiment 2, and comprises the following steps:
Start step, executes initialization, and receives the data input of temperature sensor after receiving starting-up signal；
Lowest temperature judges step, judges whether temperature is higher than minimum adjustment threshold temperature, if then jumping to temperature upper limit to judge step, if otherwise maintain the original state of active dust-proof radiating component 4 by motor；
Temperature upper limit judges step, judges whether temperature adjusts threshold temperature higher than highest, if then the folding angle of active dust-proof radiating component 4 is adjusted to maximum by motor, if otherwise jumping to temperature comparison step；
And, temperature comparison step, Current Temperatures are compared with minimum adjustment threshold temperature or previous temperature respectively, if temperature increase, increase the folding angle of active dust-proof radiating component 4 by motor, if temperature reduces, reduce the folding angle of active dust-proof radiating component 4 by motor.
Described in this example, the folding angle of the corresponding grid 8 of init state of start step execution initialization can self-defined be arranged, and the folding angle of described original state is preferably 45 degree；Described minimum adjustment threshold temperature can self-defined be arranged, preferably 20 degrees Celsius；Described highest adjustment threshold temperature can self-defined be arranged, preferably 45 degrees Celsius.
In start step described in this example, projector is pressed after key, starting-up signal is sent by the built-in mcu of projector and opens relay, connect the whole electromechanical source of projector, described starting-up signal sends to the fpga module of projector, initial temperature in projector is passed to mcu by temperature sensor simultaneously, and temperature data is passed to fpga module by spi Serial Peripheral Interface (SPI) and realizes the monitoring to projector's temperature by described mcu；Described lowest temperature judges in step, and when temperature is not up to minimum adjustment threshold temperature, fpga module controls motor 5 to drive gangbar 7 to move a certain distance, and realizes 45 degree of the folding angle of grid during original state.
Projection machine is in running, mcu (the clock running frequency of mcu) by temperature sensor monitors to temperature pass to fpga module, this data is contrasted by fpga module with default minimum adjustment threshold temperature, as being still not up to minimum adjustment threshold temperature, the folding angle of grid does not adjust；When the temperature monitoring is higher than highest 45 degrees Celsius of threshold temperature of adjustment, folding angle will be adjusted to 90 degree of maximum.
When the temperature monitoring is higher than minimum adjustment threshold temperature but during not higher than 45 degrees Celsius of threshold temperature of highest adjustment, Current Temperatures can be compared by fpga module with previous temperature, if Current Temperatures are higher than previous temperature, often high 1 degree Celsius, folding angle will increase by 3 degree than previous folding angle；If lower than previous temperature, often low 1 degree Celsius, folding angle will reduce 3 degree than previous folding angle.
The active dustproof heat radiator that this example is adopted is carried out dust-proof at the air intake vent 1 of projector using filter screen, it is provided with active dust-proof radiating component 4 in air outlet simultaneously, both solved the problems, such as projector's proper heat reduction operationally, also achieve the purpose preventing dust from entering within projector in inoperative, on this basis, according to the Current Temperatures of projector, real-time control can also be carried out to the folding angle of grid 8, and then reached that fan is warm, dust-proof and the effect of energy-conservation simultaneously, projector's service life can be made to extend 1200 hours ~ 1500 hours.
Above content be with reference to specific preferred embodiment made for the present invention further describe it is impossible to assert the present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a kind of active dustproof heat radiator for projector, it is characterized in that, including: air intake vent, air outlet, radiator, array fan, filter screen and active dust-proof radiating component, described filter screen is arranged at air intake vent, described active dust-proof radiating component is arranged at air outlet, and described radiator and array fan are set in turn between air intake vent and air outlet；Wherein, when projector's start work, active dust-proof radiating component is opened to realize radiating；During projector's shutdown, active dust-proof radiating component closure is dust-proof to realize；Described active dust-proof radiating component includes motor, balancing pole, gangbar and grid, and described motor is connected with gangbar, and described gangbar is sleeved on balancing pole, and described grid is connected with gangbar and is rotatably installed on the cabinet of projector；Described grid includes rotary shaft and universal driving shaft, and the rotary shaft on described grid is linked on cabinet, and described rotary shaft is connected with universal driving shaft by flange.
2. it is characterised in that being provided with sliding tray in described gangbar, the universal driving shaft of described grid is placed in the sliding tray of gangbar the active dustproof heat radiator for projector according to claim 1.
3. it is characterised in that being provided with threaded rod on described motor, the middle part of described gangbar is provided with screwed hole to the active dustproof heat radiator for projector according to claim 2, and described threaded rod is connected with screwed hole.
4. the active dustproof heat radiator for projector according to claim 3, it is characterized in that, when projector starts shooting, balance when gangbar keeps it mobile by the auxiliary of balancing pole, when gangbar is mobile, the universal driving shaft of grid moves in the sliding tray of gangbar, and grid rotates around rotary shaft simultaneously, so that grid becomes open mode；When projector shuts down, reversely rotating threaded rod by motor drives gangbar to move along the direction of threaded rod to grid direction, and meanwhile, gangbar keeps balance during its movement by the auxiliary of balancing pole, when gangbar is mobile, the universal driving shaft of grid moves in the sliding tray of gangbar；Grid rotates around rotary shaft simultaneously, so that grid reverts to closure state.
5. it is characterised in that the quantity of described balancing pole is two, described gangbar is sleeved on the smooth balancing pole of setting up and down two the active dustproof heat radiator for projector according to Claims 1-4 any one.
6. a kind of active dust-proof radiating method for projector is it is characterised in that employ the active dustproof heat radiator for projector as described in claim 1 to 5 any one, and comprises the following steps:
Start step, executes initialization, and receives the data input of temperature sensor after receiving starting-up signal；
Lowest temperature judges step, judges whether temperature is higher than minimum adjustment threshold temperature, if then jumping to temperature upper limit to judge step, if otherwise maintain the original state of active dust-proof radiating component by motor；
Temperature upper limit judges step, judges whether temperature adjusts threshold temperature higher than highest, if then the folding angle of active dust-proof radiating component is adjusted to maximum by motor, if otherwise jumping to temperature comparison step；
And, temperature comparison step, Current Temperatures are compared with minimum adjustment threshold temperature or previous temperature respectively, if temperature increase, increase the folding angle of active dust-proof radiating component by motor, if temperature reduces, reduce the folding angle of active dust-proof radiating component by motor.
7. the active dust-proof radiating method for projector according to claim 6, it is characterized in that, in described start step, projector is pressed after key, starting-up signal is sent by mcu and opens relay, connect the whole electromechanical source of projector, described starting-up signal sends to fpga module, initial temperature in projector is passed to mcu by temperature sensor simultaneously, and temperature data is passed to fpga module by spi Serial Peripheral Interface (SPI) and realizes the monitoring to projector's temperature by described mcu；Described lowest temperature judges in step, and when temperature is not up to minimum adjustment threshold temperature, fpga module controls motor to drive gangbar to move a certain distance, and realizes 45 degree of the folding angle of original state；When the temperature monitoring is higher than highest 45 degrees Celsius of threshold temperature of adjustment, folding angle will be adjusted to 90 degree of maximum.
8. the active dust-proof radiating method for projector according to claim 6, it is characterized in that, when the temperature monitoring is higher than minimum adjustment threshold temperature but during not higher than 45 degrees Celsius of threshold temperature of highest adjustment, Current Temperatures can be compared by fpga module with previous temperature, if Current Temperatures are higher than previous temperature, then often high 1 degree Celsius, folding angle will increase by 3 degree than previous folding angle；If Current Temperatures are lower than previous temperature, often low 1 degree Celsius, folding angle will reduce 3 degree than previous folding angle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510242124.5A CN104898358B (en) | 2015-05-13 | 2015-05-13 | Active dust-proof cooling device for projector and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510242124.5A CN104898358B (en) | 2015-05-13 | 2015-05-13 | Active dust-proof cooling device for projector and method thereof |
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| CN104898358A CN104898358A (en) | 2015-09-09 |
| CN104898358B true CN104898358B (en) | 2017-01-18 |
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| CN110955100B (en) * | 2019-12-13 | 2022-01-28 | 深圳市杰奇科技创新有限公司 | Projector heat dissipation and dust prevention device beneficial to centrifugal force principle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004204789A (en) * | 2002-12-26 | 2004-07-22 | Komatsu Ltd | Method and device for dust removal for axial fan cooling device |
| CN201054067Y (en) * | 2007-05-15 | 2008-04-30 | 四川长虹电器股份有限公司 | Projector dust-proof device |
| CN101435985A (en) * | 2007-11-15 | 2009-05-20 | 鸿富锦精密工业（深圳）有限公司 | Projection device |
| CN101782716B (en) * | 2010-01-05 | 2012-06-13 | 深圳雅图数字视频技术有限公司 | Shutter projector dustproof system |
| JP5533537B2 (en) * | 2010-10-12 | 2014-06-25 | セイコーエプソン株式会社 | Projection type display device and control method thereof |
| CN103207505B (en) * | 2013-03-26 | 2014-12-24 | 苏州佳世达光电有限公司 | Projector |
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Address after: Nanshan District Shahe road Shenzhen city Guangdong province 518000 No. 3011 Baisha building 8415 Applicant after: Shenzhen city reflect Polytron Technologies Inc Address before: Liteon No. 1 building, 518000 Guangdong Province, Shenzhen high tech Zone of Nanshan District City, North Beihuan Avenue North Pine Road 1506 room Applicant before: AVANZA Corporation |
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