CN105807545B - Projector's temperature control system and method, projector - Google Patents
Projector's temperature control system and method, projector Download PDFInfo
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- CN105807545B CN105807545B CN201610317255.XA CN201610317255A CN105807545B CN 105807545 B CN105807545 B CN 105807545B CN 201610317255 A CN201610317255 A CN 201610317255A CN 105807545 B CN105807545 B CN 105807545B
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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
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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
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
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Abstract
The present invention relates to a kind of projector's temperature control systems.Above-mentioned projector's temperature control system, including control device and multiple liquid crystal displays being correspondingly arranged, polaroid, radiator, wherein, control device is connect respectively with multiple radiators, control device is used to acquire the actual deflection rate of multiple liquid crystal displays respectively, and multiple radiators is controlled to radiate for multiple polaroids according to actual deflection rate is corresponding respectively, wherein, actual deflection rate is the pixel percentage shared by any color in three primary colors.The control system by acquire liquid crystal display actual deflection rate can suitable control radiator operating voltage for polaroid radiating and cooling, can effectively prevent polaroid and damaged because temperature is excessively high；Can also be in the case where ensureing projector's safe handling, its noise of appropriate reduction improves the quality of projecting apparatus.In addition, also provide a kind of projector's temprature control method and projector.
Description
Technical field
The present invention relates to projection device technical field, more particularly to projector's temperature control system and method, projector.
Background technology
Modern society, using more and more extensive, requirement of the people to projector's quality is also higher and higher for projector.It is most important
Be projector service life, people are when projector is used, it is undesirable to go wrong.Projector is susceptible to problem
Place be projector polaroid.Projector is just no by inclined by controlling the deflection of liquid crystal display that can control at work
Mating plate, if light, all by polaroid, polaroid does not absorb light wave, and temperature is minimum at this time., whereas if light does not pass through all
Polaroid, the polaroid of projector absorb all light waves, and the temperature of polaroid can be raised to highest.However the temperature of polaroid is
There is the limit, when the temperature of polaroid is higher, his service life is shorter.
Traditional, fan can be set to cool down for polaroid in projector, the voltage of fan is higher, and wind-force is bigger, simultaneously
The noise of generation also can be bigger, in order to reduce noise during projector's work, can use minimum fan voltage as far as possible.Generally
Fan voltage imposes a condition：When polaroid all absorbs light, the temperature of polaroid is in specification limit.But projector
In actual work, polaroid can only absorb part light, and the temperature margin of polaroid can be very big at this time, it is impossible to accurately reach drop
The purpose of temperature.
Invention content
Based on this, it is necessary to which, in view of the above-mentioned problems, providing one kind at work, polaroid temperature can control in projector
In prescribed limit, while projector's temperature control system of projector's noise and method, projector can also be effectively reduced.
A kind of projector's temperature control system, including the first liquid crystal display and the first polaroid being correspondingly arranged, for transmiting
First color of light；The second liquid crystal display and the second polaroid being correspondingly arranged, for transmiting the second color of light；The third being correspondingly arranged
Liquid crystal display and third polaroid, for transmiting third color of light, further include control device and multiple radiators；
Multiple radiators are correspondingly arranged with first polaroid, the second polaroid, third polaroid；
The control device is connect respectively with multiple radiators, for acquiring first liquid crystal display, respectively
The actual deflection rate of two liquid crystal displays, third liquid crystal display liquid crystal, and according to the actual deflection rate respectively corresponding control it is multiple described in
Radiator is first polaroid, the heat dissipation of the second polaroid, third polaroid, wherein, the actual deflection rate is former for three
Pixel percentage in color shared by any color.
In one of the embodiments, the polarization direction of the polarization direction of the liquid crystal display and the polaroid for 0 degree or
The polarization direction of the liquid crystal display and the polarization direction of the polaroid are 90 degree；
First liquid crystal display, the second liquid crystal display, third liquid crystal display liquid crystal actual deflection rate respectively with being correspondingly arranged
First polaroid, the second polaroid, third polaroid actual absorption rate are corresponding；
If the polarization direction of the polarization direction of liquid crystal display and the polaroid is 0 degree, the actual deflection rate with it is described
Actual absorption rate is equal；If the polarization direction of liquid crystal display and the polarization direction of the polaroid are 90 degree, the actual deflection
The sum of rate and the actual absorption rate are one.
The control device includes collecting unit, storage unit and control unit in one of the embodiments,；
The collecting unit, storage unit and control unit are sequentially connected electrically；The collecting unit is used to acquire institute respectively
It states the actual deflection rate of the first liquid crystal display, the second liquid crystal display and third liquid crystal display and is stored in the storage unit；The storage
Unit is additionally operable to store the default deflection efficiency of first liquid crystal display, the second liquid crystal display and third liquid crystal display；Described control unit
It is corresponded to and adjusted according to the size of the actual deflection rate of first liquid crystal display, the second liquid crystal display and third liquid crystal display and default deflection efficiency
Save the operating voltage of multiple radiators.
Then the operating voltage of the radiator is directly proportional to the actual absorption rate in one of the embodiments,.
The control device further includes timing unit in one of the embodiments, the timing unit respectively with it is described
Collecting unit, control unit connection acquire first liquid crystal display, the second liquid crystal display for controlling and recording the collecting unit
With the time of third liquid crystal display.
The radiator is one kind in fan or air blower in one of the embodiments,.
In addition, a kind of projector is also provided, including projector's temperature control system.
In addition, a kind of projector's temprature control method is also provided, using projector as claimed in claim 7, including such as
Lower step：
The actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is acquired respectively；
The default deflection efficiency of first liquid crystal display, the second liquid crystal display, third liquid crystal display is obtained respectively；
Correspondence judges first liquid crystal display, the second liquid crystal display, the actual deflection rate of third liquid crystal display and institute respectively
State the size of default deflection efficiency；
It is preset partially with described according to the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display
The size of rate of rotation adjusts the operating voltage of the radiator.
It is corresponding respectively in one of the embodiments, to judge first liquid crystal display, the second liquid crystal display, third liquid crystal display
Actual deflection rate and first liquid crystal display, the second liquid crystal display, third liquid crystal display default deflection efficiency size specific steps
Including：
Within the continuous predetermined time, the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is obtained
Average value；
Corresponding first liquid crystal display, the second liquid crystal display, third liquid crystal display actual deflection rate average value with it is pre-
If the size of deflection efficiency.
In one of the embodiments, according to the actual deflection rate and the size of default deflection efficiency, the heat dissipation is adjusted
The specific steps of the voltage of device include：
It is corresponding to judge first liquid crystal display, the second liquid crystal display, third liquid crystal display and first polaroid, the second polarisation
The polarization direction of piece, third polaroid, if polarization direction is consistent, and first liquid crystal display, the second liquid crystal display, third liquid crystal display
Actual deflection rate average value be more than the default deflection efficiency, then adjust with first polaroid, the second polaroid, third
The real work voltage for the radiator that polaroid is correspondingly arranged makes the real work voltage be higher than default operating voltage,
If the average value of the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is less than described pre-
If deflection efficiency, then the reality of radiator being correspondingly arranged with first polaroid, the second polaroid, third polaroid is adjusted
Operating voltage；The real work voltage is made to be equal to or less than default operating voltage；
If polarization direction is in 90 degree of angles, and the actual deflection of first liquid crystal display, the second liquid crystal display, third liquid crystal display
The average value of rate is less than the default deflection efficiency, then adjusts corresponding with first polaroid, the second polaroid, third polaroid
The real work voltage of the radiator of setting makes the real work voltage be higher than default operating voltage；
If the average value of the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is more than described pre-
If deflection efficiency, then the reality of radiator being correspondingly arranged with first polaroid, the second polaroid, third polaroid is adjusted
Operating voltage；The real work voltage is made to be equal to or less than default operating voltage.
Above-mentioned projector's temperature control system, including control device and multiple liquid crystal displays being correspondingly arranged, polaroid, heat dissipation
Device, wherein, control device is connect respectively with multiple radiators, and control device is used to acquire the reality of multiple liquid crystal displays respectively
Deflection efficiency, and multiple radiators is controlled to radiate for multiple polaroids according to actual deflection rate is corresponding respectively, wherein, actual deflection
Rate is the pixel percentage shared by any color in three primary colors.The control system can by acquiring the actual deflection rate of liquid crystal display
Using the operating voltage of suitable control radiator as polaroid radiating and cooling, polaroid is can effectively prevent because temperature is excessively high
And it damages；Can also be in the case where ensureing projector's safe handling, its noise of appropriate reduction improves the quality of projecting apparatus.
Description of the drawings
Fig. 1 is the layout structure schematic diagram of projector's temperature control system；
Fig. 2 is the frame diagram of projector's temperature control system；
Fig. 3 is the flow chart of projector's temprature control method.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more related
Listed Items arbitrary and all combination.
The layout structure schematic diagram of projector's temperature control system as shown in Figure 1, including the first liquid crystal being correspondingly arranged
Shield Y1 and the first polaroid G1, for transmiting the first color of light；The the second liquid crystal display Y2 and the second polaroid G2 being correspondingly arranged are used
In transmiting the second color of light；The third liquid crystal display Y3 that is correspondingly arranged and third polaroid G3, for transmiting third color of light, second
Liquid crystal display Y2 is parallel with the plane where third liquid crystal display Y3 and vertical with the plane where the first liquid crystal display Y1.It is correspondingly arranged
Liquid crystal display (Y1, Y2, Y3) and polaroid (G1, G2, G3) be arranged in parallel, and liquid crystal display (Y1, Y2, Y3) and polaroid (G1,
G2, G3) polarization angle could be provided as 0 degree, may be set to be 90 degree.It can be set according to actual conditions.Wherein,
One color of light corresponds to feux rouges；Second color of light corresponds to green light, third color of light corresponds to blue light.In other embodiments, the first face
Coloured light, the second color of light and third color of light are respectively any one in feux rouges, green light, blue light.
Light source transmits in projector, since polaroid (G1, G2, G3) only allows polarization direction and the polaroid of light source
The light that the polarization direction of (G1, G2, G3) is consistent passes through, for the identical projected image of the picture for being formed with being set, liquid crystal display
(Y1, Y2, Y3) is capable of the polarization direction of the change light source of selectivity, and the polarization direction of extra light source is deflected, prevent its from
Pass through polaroid (G1, G2, G3)；By the way that a width and setting figure will be formed in the light projection to screen of polaroid (G1, G2, G3)
As consistent projected image.
It is the frame diagram of projector's temperature control system as shown in Figure 2, which further includes 100 He of control device
Multiple radiators (S1, S2, S3)；Multiple radiators (S1, S2, S3) and the first polaroid G1, the second polaroid G2, third
Polaroid G3 is correspondingly arranged, and is radiated for polaroid (G1, G2, G3).Control device 100 respectively with multiple radiators (S1, S2,
S3 it) connects, for acquiring the actual deflection rate of liquid crystal display (Y1, Y2, Y3), and corresponding control is multiple respectively according to actual deflection rate
Radiator (S1, S2, S3) is the first polaroid G1, the second polaroid G2, third polaroid G3 radiate.
If liquid crystal display (Y1, Y2, Y3) is consistent with the polarization direction of polaroid (G1, G2, G3), actual deflection rate and reality
Absorptivity is equal；If liquid crystal display (Y1, Y2, Y3) and the angle of the polarization direction of polaroid (G1, G2, G3) are 90 degree, practical
The sum of deflection efficiency and actual absorption rate are one.Projected image is made of the pixel of multiple color, most basic color be it is red,
Green and blue, wherein, the actual deflection rate of liquid crystal display (Y1, Y2, Y3) is the pixel percentage shared by any color in three primary colors
Than.Such as in the present embodiment, the actual deflection rate of the first liquid crystal display Y1 is exactly pixel red in projected image divided by total
Pixel percentage；The actual deflection rate of second liquid crystal display Y2 is exactly pixel green in projected image divided by total picture
The percentage of vegetarian refreshments；The actual deflection rate of third liquid crystal display Y3 is exactly pixel blue in projected image divided by total pixel
Percentage.
First liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 liquid crystal actual deflection rate respectively with being correspondingly arranged
The first polaroid G1, the second polaroid G2, third polaroid G3 absorptivities it is corresponding.If liquid crystal display (Y1, Y2, Y3) and polarisation
The polarization direction of piece (G1, G2, G3) is consistent, then actual deflection rate is equal with actual absorption rate；If liquid crystal display (Y1, Y2, Y3) with
The angle of the polarization direction of polaroid (G1, G2, G3) is 90 degree, then the sum of actual deflection rate and actual absorption rate are one.At this
In embodiment, the liquid crystal display (Y1, Y2, Y3) being oppositely arranged is identical with the polarization direction of polaroid (G1, G2, G3), passes through acquisition
The rate of walking around of liquid crystal display (Y1, Y2, Y3), it is possible to directly obtain the absorption of the polaroid (G1, G2, G3) for setting of being corresponding to it
Rate.
Wherein, control device 100 include collecting unit 110, storage unit 120 and control unit 130, collecting unit 110,
Storage unit 120 and control unit 130 are sequentially connected electrically.Collecting unit 110 acquires first respectively according to the information of projected image
The actual deflection rate of liquid crystal display Y1, the second liquid crystal display Y2 and third liquid crystal display Y3, wherein, the actual deflection rate of the first liquid crystal display Y1
For P1, the actual deflection rate of the second liquid crystal display Y2 is P2, and the actual deflection rate of third liquid crystal display Y3 is P3.Collecting unit 110 will
Actual deflection rate (P1, the P2, P3) storage of acquisition is in the storage unit 120.Storage unit 120 also stores the first liquid simultaneously simultaneously
The default deflection efficiency of crystalline substance screen Y1, the second liquid crystal display Y2 and third liquid crystal display Y3, the first liquid crystal display Y1, the second liquid crystal display Y2 and third
The default deflection efficiency of liquid crystal display Y3 is represented respectively with (P1 ', P2 ', P3 ').In the present embodiment, the first liquid crystal display Y1, second
The default deflection efficiency of liquid crystal display Y2 and third liquid crystal display Y3 (P1 ', P2 ', P3 ') are equal, and be set as 70%.In other embodiment
In, the default deflection efficiency (P1 ', P2 ', P3 ') of the first liquid crystal display Y1, the second liquid crystal display Y2 and third liquid crystal display Y3 can also be set
For 75% or other numerical value that are equal or being not mutually equal, concrete condition can be depending on actual conditions.
Control device 110 further includes timing unit 140, timing unit 140 respectively with collecting unit 110, control unit 130
Connection, for collecting unit 110 to be controlled to acquire the time of liquid crystal display (Y1, Y2, Y3) deflection efficiency.In the present embodiment, timing
The time of unit 140 is set as five minutes, in other embodiment, and the time of timing unit 140 can be set as two minutes, eight points
Clock or other times, can be according to specifically needing setting for the picture projected.
According to timing unit 140 and collecting unit 110, calculation processing obtains in the given time control unit 130, acquisition
The first liquid crystal display Y1, the second liquid crystal display Y2 and the average value (P of the actual deflection rate of third liquid crystal display Y3 that unit 110 acquires1、
P2、P3)。
Control device 100 is connect respectively with multiple radiators (S1, S2, S3), wherein, radiator (S1, S2, S3) is
One kind in fan or air blower.In the present embodiment, radiator (S1, S2, S3) be fan, radiator (S1, S2,
S3 quantity) is 3, and each radiator is correspondingly placed near polaroid (G1, G2, G3), is radiated for polaroid.
Control unit 130 is according to the actual deflection rate of the first liquid crystal display Y1, the second liquid crystal display Y2 and third liquid crystal display Y3
Average value (P1、P2、P3) and default deflection efficiency (P1 ', P2 ', P3 ') size, it is corresponding to adjust multiple radiators (S1, S2, S3)
Operating voltage.Namely be respectively compared the first liquid crystal display Y1 than actual deflection rate average value P1With default deflection efficiency P1 '
Size.Wherein, the operating voltage of radiator (S1, S2, S3) is directly proportional to actual absorption rate.Polaroid (G1, G2, G3)
Absorptivity is higher, and the temperature of polaroid (G1, G2, G3) is higher.In the present embodiment, the reality of liquid crystal display (Y1, Y2, Y3)
Deflection efficiency is equal with the actual absorption rate of polaroid (G1, G2, G3).If the average value P of actual deflection rate1More than default deflection efficiency
P1 ' then has the control of control unit 110 that the operating voltage of radiator S1 being correspondingly arranged with the first polaroid G1, heat dissipation is turned up
The operating voltage of device S1 is higher, and the wind speed of radiator S1 is bigger, plays the role of cooling, effectively prevents the first polarisation
Piece G1 is damaged because temperature is excessively high.If the average value P of actual deflection rate1Less than default deflection efficiency P1 ', then make the first polaroid
The operating voltage of radiator S1 that G1 is correspondingly arranged is restored to initial value, reduces wind speed, and then has the function that reduce noise.
Similarly, compare respectively the second liquid crystal display Y2 than actual deflection rate average value P2It is big with default deflection efficiency P2 '
It is small；Third liquid crystal display Y3 than actual deflection rate average value P3With the size of default deflection efficiency P3 ', and then control with second partially
The operating voltage of radiator (S1, S2) that mating plate G2, third polaroid G3 are correspondingly arranged reaches the effect of cooling or noise reduction
Fruit.
In other embodiments, if liquid crystal display (Y1, Y2, Y3) and the angle of the polarization direction of polaroid (G1, G2, G3) are
90 degree, the sum of the actual deflection rate of liquid crystal display (Y1, Y2, Y3) and the actual absorption rate of polaroid be one, then radiator (S1,
S2, S3) operating voltage then with the actual deflection rate of liquid crystal display (Y1, Y2, Y3) in inverse ratio, correspondingly, control unit 110 passes through
The actual deflection rate of the first liquid crystal display Y1, the second liquid crystal display Y2 and third liquid crystal display Y3 stored in processing storage unit 120
Average value (P1、P2、P3) and default deflection efficiency (P1 ', P2 ', P3 '), the corresponding work for adjusting multiple radiators (S1, S2, S3)
Voltage achievees the effect that cooling, noise reduction.
The present invention also provides a kind of projectors for including the use of above-mentioned projector's temperature control system.
It is the flow chart of projector's temprature control method as shown in Figure 3, includes the following steps：
Step S110：The actual deflection rate of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 are acquired respectively.
The actual deflection rate of liquid crystal display (Y1, Y2, Y3) is the pixel percentage shared by any color in three primary colors.Such as
In the present embodiment, the actual deflection rate of the first liquid crystal display Y1 is exactly pixel red in projected image divided by total pixel
Percentage；The actual deflection rate of second liquid crystal display Y2 is exactly the percentage of pixel green in projected image divided by total pixel
Than；The actual deflection rate of third liquid crystal display Y3 is exactly the percentage of pixel blue in projected image divided by total pixel.
According to projected image, acquire respectively the first liquid crystal display Y1, the second liquid crystal display Y2 and third liquid crystal display Y3 actual deflection rate (P1,
P2, P3) size.
Step S120：The default deflection efficiency of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 are obtained respectively.
Obtain respectively be stored in the first liquid crystal display Y1 in storage unit, the second liquid crystal display Y2, third liquid crystal display Y3 it is pre-
If deflection efficiency (P1 ', P2 ', P3 ').In the present embodiment, deflection efficiency (P1 ', P2 ', P3 ') is preset to be equal, and be set as 70%.
In other embodiments, the first liquid crystal display Y1, the second liquid crystal display Y2 and third liquid crystal display Y3 default deflection efficiency (P1 ', P2 ',
P3 ') 75% or other numerical value that are equal or being not mutually equal are may be arranged as, concrete condition can be depending on actual conditions.
Step S130：The corresponding actual deflection for judging the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 respectively
The size of rate and default deflection efficiency.
Within the continuous predetermined time, by calculating, the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 are obtained
Average value (the P of actual deflection rate during this period of time1、P2、P3)；
Corresponding relatively the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 actual deflection rate average value
(P1、P2、P3) with the size of default deflection efficiency (P1 ', P2 ', P3 ').That is, corresponding relatively the first liquid crystal display Y1's is averaged
Value P1With the size of default deflection efficiency P1 ', the corresponding relatively average value P of the second liquid crystal display Y22With the size of default deflection efficiency P2 ',
The corresponding relatively average value P of third liquid crystal display Y33With the size of default deflection efficiency P3 ', and result of the comparison is transferred to control
Unit is for further processing.
Step S140：It is averaged according to the actual deflection rate of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3
The size of value and default deflection efficiency, the operating voltage of adjusting heat dissipation device.
Since the absorptivity of polaroid (G1, G2, G3) is higher, the temperature of polaroid (G1, G2, G3) is higher；And the dress that radiates
The operating voltage put is directly proportional to the wind speed of radiator, by the operating voltage of adjusting heat dissipation device can to partial heat piece into
Row heat dissipation.
First, it is corresponding to judge the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 and the first polaroid G1, the
The polarization direction of two polaroid G1, third polaroid G1.Due to the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3
Polarization direction it is identical with the first polaroid G1, the second polaroid G1, the polarization direction of third polaroid G1, the first liquid crystal display
Y1, the second liquid crystal display Y2, the deflection efficiency of third liquid crystal display Y3 and the first polaroid G1, the second polaroid G1, third polaroid G1
Absorptivity it is identical, then the operating voltage of radiator and the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 it is inclined
Rate of rotation is directly proportional；If the polarization direction of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 and the first polaroid G1,
Second polaroid G1, third polaroid G1 polarization direction have 90 degree of angle, the first liquid crystal display Y1, the second liquid crystal display Y2,
The sum of the deflection efficiency of three liquid crystal display Y3 and the absorptivity of polaroid are one, the then operating voltage of radiator and the first liquid crystal display
Y1, the second liquid crystal display Y2, third liquid crystal display Y3 deflection efficiency be inversely proportional.
If the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 and the first polaroid G1, the second polaroid G1,
The polarization direction of third polaroid G1 is consistent, and the actual deflection of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3
The average value of rate is more than default deflection efficiency, then adjusts and the first polaroid G1, the second polaroid G1, third polaroid G1 is corresponding sets
The real work voltage for the radiator put makes real work voltage be higher than default operating voltage, is and the first liquid crystal display Y1, the
The first polaroid G1 that two liquid crystal display Y2, third liquid crystal display Y3 are correspondingly arranged, the second polaroid G1, third polaroid G1 coolings.
If the average value of the actual deflection rate of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 is less than default
Deflection efficiency then adjusts the reality of radiator being correspondingly arranged with the first polaroid G1, the second polaroid G1, third polaroid G1
Operating voltage；Real work voltage is made to be equal to or less than default operating voltage, achievees the effect that noise reduction.
If the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 and the first polaroid G1, the second polaroid G1,
The polarization direction of third polaroid G1 is in 90 degree of angles, and the reality of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3
The average value of border deflection efficiency is less than default deflection efficiency, then adjusts and the first polaroid G1, the second polaroid G1, third polaroid G1
The real work voltage for the radiator being correspondingly arranged makes real work voltage be higher than default operating voltage, for first polarisation
Piece G1, the second polaroid G1, third polaroid G1 coolings.
If the average value of the actual deflection rate of the first liquid crystal display Y1, the second liquid crystal display Y2, third liquid crystal display Y3 is more than default
Deflection efficiency then adjusts the reality of radiator being correspondingly arranged with the first polaroid G1, the second polaroid G1, third polaroid G1
Operating voltage；Real work voltage is made to be equal to or less than default operating voltage, achievees the effect that noise reduction.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of projector's temperature control system, including the first liquid crystal display and the first polaroid being correspondingly arranged, for transmiting the
One color of light；The second liquid crystal display and the second polaroid being correspondingly arranged, for transmiting the second color of light；The third liquid being correspondingly arranged
Crystalline substance screen and third polaroid, for transmiting third color of light, which is characterized in that further include control device and multiple radiators；
Multiple radiators are correspondingly arranged with first polaroid, the second polaroid, third polaroid；
The control device is connect respectively with multiple radiators, for acquiring first liquid crystal display, the second liquid respectively
The actual deflection rate of crystalline substance screen, third liquid crystal display liquid crystal, and control multiple heat dissipations according to the actual deflection rate is corresponding respectively
Device is first polaroid, the heat dissipation of the second polaroid, third polaroid, wherein, the actual deflection rate is in three primary colors
Pixel percentage shared by any color；
First liquid crystal display, the second liquid crystal display, third liquid crystal display liquid crystal actual deflection rate respectively be correspondingly arranged described in
First polaroid, the second polaroid, third polaroid actual absorption rate are corresponding；
The radiator is fan or air blower.
2. projector's temperature control system according to claim 1, which is characterized in that the polarisation axis direction of the liquid crystal display
It is 0 degree or the polarisation axis direction of the liquid crystal display and the polarizing axis side of the polaroid with the polarisation axis direction of the polaroid
To being 90 degree；
If the polarisation axis direction of the polarisation axis direction of liquid crystal display and the polaroid is 0 degree, the actual deflection rate with it is described
Actual absorption rate is equal；If the polarisation axis direction of liquid crystal display and the polarisation axis direction of the polaroid are 90 degree, the reality
The sum of deflection efficiency and the actual absorption rate are one.
3. projector's temperature control system according to claim 2, which is characterized in that it is single that the control device includes acquisition
Member, storage unit and control unit；
The collecting unit, storage unit and control unit are sequentially connected electrically；The collecting unit for acquiring described the respectively
The actual deflection rate of one liquid crystal display, the second liquid crystal display and third liquid crystal display is simultaneously stored in the storage unit；The storage unit
It is additionally operable to store the default deflection efficiency of first liquid crystal display, the second liquid crystal display and third liquid crystal display；Described control unit according to
It is more that the size of first liquid crystal display, the actual deflection rate of the second liquid crystal display and third liquid crystal display and default deflection efficiency corresponds to adjusting
The operating voltage of a radiator.
4. projector's temperature control system according to claim 3, which is characterized in that the then work electricity of the radiator
Pressure is directly proportional to the actual absorption rate.
5. projector's temperature control system according to claim 3, which is characterized in that the control device further includes timing
Unit, the timing unit are connect respectively with the collecting unit, control unit, are adopted for controlling and recording the collecting unit
Collect the time of first liquid crystal display, the second liquid crystal display and third liquid crystal display.
6. a kind of projector, which is characterized in that including such as Claims 1 to 5 any one of them projector temperature control system.
7. a kind of projector's temprature control method, which is characterized in that using such as Claims 1 to 5 any one of them projector
Temperature control system includes the following steps：
The actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is acquired respectively；
The default deflection efficiency of first liquid crystal display, the second liquid crystal display, third liquid crystal display is obtained respectively；
Respectively it is corresponding judge first liquid crystal display, the second liquid crystal display, third liquid crystal display the actual deflection rate with it is described pre-
If the size of deflection efficiency；
According to first liquid crystal display, the second liquid crystal display, the actual deflection rate of third liquid crystal display and the default deflection efficiency
Size, adjust the operating voltage of the radiator.
8. projector's temprature control method according to claim 7, which is characterized in that correspondence judges first liquid respectively
Actual deflection rate and first liquid crystal display, the second liquid crystal display, the third liquid crystal display of brilliant screen, the second liquid crystal display, third liquid crystal display
The specific steps of size of default deflection efficiency include：
Within the continuous predetermined time, obtain first liquid crystal display, the second liquid crystal display, third liquid crystal display actual deflection rate it is flat
Mean value；
Corresponding first liquid crystal display, the second liquid crystal display, third liquid crystal display actual deflection rate average value with it is default inclined
The size of rate of rotation.
9. projector's temprature control method according to claim 7, which is characterized in that according to the actual deflection rate and in advance
If the size of deflection efficiency, the specific steps for adjusting the voltage of the radiator include：
It is corresponding judge first liquid crystal display, the second liquid crystal display, third liquid crystal display and first polaroid, the second polaroid,
The polarisation axis direction of third polaroid, if polarisation axis direction is consistent, and first liquid crystal display, the second liquid crystal display, third liquid crystal
The average value of the actual deflection rate of screen is more than the default deflection efficiency, then adjusts and first polaroid, the second polaroid, the
The real work voltage for the radiator that three polaroids are correspondingly arranged makes the real work voltage be higher than default operating voltage,
If the average value of the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is less than described default inclined
Rate of rotation then adjusts the real work of radiator being correspondingly arranged with first polaroid, the second polaroid, third polaroid
Voltage；The real work voltage is made to be equal to or less than default operating voltage；
If the polarisation axis direction of the polarizing axis of first liquid crystal display and first polaroid is in 90 degree of angles, the second liquid crystal display
Polarizing axis and second polaroid polarizing axis in 90 degree of angles, the polarizing axis of the third liquid crystal display and the third are inclined
The polarizing axis of mating plate is in 90 degree of angles, and the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is flat
Mean value is less than the default deflection efficiency, then adjusts and be correspondingly arranged with first polaroid, the second polaroid, third polaroid
The real work voltage of radiator makes the real work voltage be higher than default operating voltage；
If the average value of the actual deflection rate of first liquid crystal display, the second liquid crystal display, third liquid crystal display is more than described default inclined
Rate of rotation then adjusts the real work of radiator being correspondingly arranged with first polaroid, the second polaroid, third polaroid
Voltage；The real work voltage is made to be equal to or less than default operating voltage.
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| CN202041863U (en) * | 2010-12-09 | 2011-11-16 | 深圳市摩拓触摸科技有限公司 | Constant temperature control device of liquid crystal display television |
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| JP2003009041A (en) * | 2001-06-20 | 2003-01-10 | Fujitsu General Ltd | Liquid crystal projector device |
| JP4270116B2 (en) * | 2004-11-30 | 2009-05-27 | ソニー株式会社 | Cooling device and projection display device |
| JP5023711B2 (en) * | 2007-01-19 | 2012-09-12 | 株式会社日立製作所 | Cooling system |
| CN205644001U (en) * | 2016-05-13 | 2016-10-12 | 深圳市毅丰光电科技有限公司 | Temperature control system of projector and projector |
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