CN1570755A - Projector air filter replacement time determination device and representation method thereof - Google Patents
Projector air filter replacement time determination device and representation method thereof Download PDFInfo
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- CN1570755A CN1570755A CN 03133722 CN03133722A CN1570755A CN 1570755 A CN1570755 A CN 1570755A CN 03133722 CN03133722 CN 03133722 CN 03133722 A CN03133722 A CN 03133722A CN 1570755 A CN1570755 A CN 1570755A
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- air
- projector
- temperature
- internal temperature
- air strainer
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Abstract
This invention relates to an apparatus and its method for judging the renewal time of air-filter of projector. It is to locate air-filter used to filer exterior air pollutants; to locate a detecting component for the temperature of exterior air sucked in; to locate an inner temperature detecting component to measure the inner temperature of projector; to locate control component to output relevant control signals and to calculate the temperature difference between exterior and inner air and to compare it with stated inner temperature intensification value; then to judge and display the renewal time of air-filter time. So it can prevent product damage and error operation caused by excessive heating and to increase the product reliability.
Description
Technical field
The present invention relates to projector (Projector), especially relate to projector air strainer (Air-Filter) and change time judgment means and method for expressing thereof.
Background technology
Recently, projector and utilize the application product (for example rear-projection TV) of projector in order to improve brightness and resolution, the product of using LCD (LCD) (Liquid crystal display) has obtained using widely, and the impetus of its exploitation and production is constantly being increased.
Usually, on the LCD panel of LCD projector and projector applications product, because the light-source brightness of interior dress is very high, and along with the raising thermal value of brightness is also very big.For this reason, because the thermal value of light source is very big, internal temperature will sharply rise when system moves.
At this moment, LCD projector and use the product of projector, in case energized just is drawn into extraneous air the inside of projector, cooled interior LCD panel or inner components and parts whereby, to discharge the air of projector inside then, in case the locking system temperature inside rises.
In addition, utilize the temperature sensor IC (Integrated Circuit) that is installed in the inner mainboard (Main Board) of the projector back side) measure Inside Air Temperature, and measured Inside Air Temperature is represented, so that allow the user know.
The product of traditional projector or application projector exists following problem.
The first, when the temperature rise of internal system is undesired, can't go to prevent because of reason damage such as overheated system.
Second, because of knowing the internal temperature situation that changes along with external temperature, the user can't know the abnormal reason of internal temperature rise, needs the user periodically directly to go to check the state of air strainer and the time of needs replacing etc. for this reason, and search reason, bother very much.
Summary of the invention
The purpose of this invention is to provide a kind of projector air strainer and change time judgment means and method for expressing thereof, it can overcome existing shortcoming in the prior art, prevent the system injury that causes because of internal temperature rise, and the time of changing air strainer is provided to the user.
The object of the present invention is achieved like this: the projector air strainer is changed the time judgment means, in the projector that is provided with drawing fan and extraction fan, have following architectural feature, that is: be provided with the air strainer that is used for filtering by the extraneous air polluter of drawing fan inspiration; Be provided with the external temperature test section that is used for detecting by the external air temperature of drawing fan inspiration; Be provided with the internal temperature test section that is used for detecting the projector internal temperature; Be provided with control part, it will export control signal corresponding, go to calculate the temperature difference of extraneous air and inner air, and the temperature difference of extraneous air that calculates with this quilt and inner air comes to compare with the internal temperature added value of setting in advance, judge the replacing time of air strainer then according to this fiducial value, and go to represent that the air strainer of judging changes the time.
In addition, in order to achieve the above object, projector air strainer of the present invention is changed the time representation method, and in the projector that is provided with drawing fan and extraction fan, having with the next stage is feature, is provided with the stage of detecting external temperature and internal temperature that is:; Be provided with the temperature difference calculation stages of utilizing detected external temperature and internal temperature to calculate this external temperature and internal temperature; In addition, surpass the internal temperature added value of setting in advance, so just gone to circulate a notice of to arrive the circular stage of changing the time of air strainer if also be provided with the temperature difference of the external temperature that calculates and internal temperature.
Above-mentioned the present invention, be that the projector air strainer is changed the time judgment means and method for expressing is a temperature outside by projector and inner air, judge the replacing time of air strainer, and circular is given the user, therefore can go to prevent to go to damage product and misoperation, have the effect that improves product reliability because of reason such as overheated.
Description of drawings
Fig. 1 is the present invention, and promptly the projector air strainer is changed the side cutaway view of time judgment means.
Fig. 2 is the present invention, and promptly the projector air strainer is changed the block diagram of time judgment means.
Fig. 3 is the present invention, and promptly the projector air strainer is changed the process flow diagram of time representation method.
Among the figure: 10, LCD plate 20, drawing fan
21, extraction fan 30, air strainer
40, external temperature test section 50, internal temperature test section
60, control part 61, storage part
70, display part 80, loudspeaker
S10: energized S11: detect external air temperature/detection inner air
Temperature
S12: measure detected outside and internal difference in temperature
S13: outside and internal temperature is poor＞the temperature added value of setting in advance?
S14: the circular air strainer is changed the time
Embodiment
Below, in conjunction with the accompanying drawings, the present invention will be further described in detail
As illustrated in figures 1 and 2, the present invention, be that the projector air strainer is changed the time judgment means, in the projector that is provided with drawing fan 20 and extraction fan 21, form by following structures, that is: be provided with the air strainer 30 that is used for filtering by the extraneous air polluter of drawing fan 20 inspirations; Be provided with the external temperature test section 40 that is used for detecting by the external air temperature of drawing fan 20 inspirations; Be provided with the internal temperature test section 50 that is used for detecting the projector internal temperature; Be provided with control part 60, it will export control signal corresponding, go to calculate the temperature difference of extraneous air and inner air, and come to compare with the internal temperature added value of setting in advance with the temperature difference of this extraneous air that calculates and inner air, judge the replacing time of air strainer 30 then according to this fiducial value, and will go to represent the replacing time of air strainer 30 through judging.
In addition, also be provided with and be used for the storage part 61 of the internal temperature added value that storage in advance is set; Be provided with and show the display part 70 of the replacing temporal information of air strainer 30 according to control signal; Be provided with according to control signal, export the buzzing warning loudspeaker of the replacing time of circular air strainer 30.
Have a look the present invention with said structure below, promptly the projector air strainer is changed the course of work of time judgment means.If connect the power supply of projector,, extraneous air be drawn into the inside of projector by drawing fan 20 so according to the control signal of control part 60.
At this moment, filter the polluter of dust etc. from outside inhaled air by air strainer 30, and on air strainer 30, will constantly deposit the polluter of extraneous air.
The extraneous air that is drawn into projector inside will go to the inside of liquid coolant crystal display 10 and projector, and the inner air of projector, will be as shown in the figure, be discharged into the outside by extraction fan 21.
Meanwhile, according to the control signal of control part 60, external temperature test section 40 will detect the external air temperature of suction; Internal temperature test section 50 will detect the Inside Air Temperature of projector.
In addition, control part 60 will receive respectively by external temperature and internal temperature test section 40 and 50, and the external air temperature value (x) of detection and Inside Air Temperature value (y) are measured the temperature difference (y-x) of extraneous air and inner air then.
Then, read internal temperature added value (the Δ LCD that has stored from storage part (61), under normal situation, through cooled projector internal temperature added value), then the internal temperature added value (Δ LCD) that reads is compared with the measured extraneous air and the temperature difference (y-x) of inner air, and judge whether to change air strainer 30 according to situation about comparing.
Here, external air temperature (x) will have following mathematical relation between the internal temperature added value (Δ LCD) of Inside Air Temperature (y) and setting in advance.
[mathematical expression 1]
y＝x+ΔLCD
If the time that the projector operation is given, Δ LCD promptly through the internal temperature added value of normal cooled projector, will keep certain value so.In addition, Δ LCD will keep necessarily, and is irrelevant with outside environment temperature.
And with the variation of going to judge along with external air temperature, whether internal temperature abnormal conditions occur.That is to say, when Inside Air Temperature y rise undesired the time, the state that removes to check air strainer 30 that should be preferential, therefore will follow the comparison of the internal temperature added value of setting in advance (Δ LCD) according to the temperature difference (y-x) of extraneous air and inner air, and can judge indirectly and whether will change air strainer 30.
Below, to having the present invention of the above-mentioned course of work, i.e. the air strainer of projector air strainer replacing time judgment means is changed the time representation method and is described.
As shown in Figure 3, S10 when at first connecting the power supply of projector by external temperature test section 40, removes to detect the external air temperature (x) that is drawn into projector inside; Simultaneously by internal temperature test section 50, the air themperature (y) of going to detect projector inside (S11).
In addition, the detected extraneous air and the temperature difference (y-x) S12 of inner air will be measured.Then, read the internal temperature added value (Δ LCD) of prior setting, and the internal temperature added value of the prior setting that will read (Δ LCD) compares S13 with the temperature difference (y-x) between extraneous air and the inner air from storage part 61.
Comparative result S13, if the temperature difference between extraneous air and the inner air ((x-y=＞y-x)) surpasses the internal temperature added value of setting in advance (Δ LCD), so just circulated a notice of to change air strainer 30 time S14.
Here, the replacing time method of circular air strainer 30 is, be partitioned into the given field of display part 70, the information of carrying out on OSD shows, perhaps utilizes the telepilot (the remote control means of remote control projector) (omitting diagram) with other demonstration means to show the replacing temporal information of air strainer 30.
In addition, by loudspeaker 80, circulate a notice of the replacing temporal information of air strainer 30 according to the control output buzzing of control part 60.
In addition, S13 as a result relatively, if the temperature difference between extraneous air and the inner air (y-x) surpasses the internal temperature added value of setting in advance (Δ LCD), so just feedback (Feedback) repeats above-mentioned process to the S11 stage.
Above-mentioned the present invention, be that the projector air strainer is changed the time judgment means and method for expressing is in order to cool off the inner extraneous air that sucks of projector and the temperature difference of projector inner air by one, judge whether change air strainer, and the time of replacing air strainer is provided to the user.
By above-mentioned explanation,, in not breaking away from technological thought scope of the present invention, can carry out various changes and revision if the professional can know.
And technical scope of the present invention is not to be limited to the content of putting down in writing in the example, but should draws a circle to approve according to the claim of patent.
Claims (4)
1, the projector air strainer is changed the time judgment means, in the projector that is provided with drawing fan and extraction fan, has following architectural feature, that is:
Be provided with the air strainer that is used for filtering by the extraneous air polluter of drawing fan inspiration;
Be provided with the external temperature test section that is used for detecting by the external air temperature of drawing fan inspiration;
Be provided with the internal temperature test section that is used for detecting the projector internal temperature;
Be provided with control part, it will export control signal corresponding, go to calculate the temperature difference of extraneous air and inner air, and the temperature difference of extraneous air that calculates with this quilt and inner air comes to compare with the internal temperature added value of setting in advance, judge the replacing time of air strainer then according to this fiducial value, and go to represent that the air strainer of judging changes the time.
2, change the time judgment means according to the said projector air strainer of claim 1, it is characterized in that it is provided with the storage part that is used for storing the internal temperature added value that is set in advance;
Be provided with and show the display part of the replacing temporal information of air strainer according to control signal; Be provided with according to control signal, export the buzzing warning loudspeaker of the replacing time of circular air strainer.
3, the projector air strainer is changed the time representation method, and in being provided with the projector of air strainer, having with the next stage is feature, that is:
Be provided with the stage of detecting external temperature and internal temperature;
Be provided with the temperature difference calculation stages of utilizing detected external temperature and internal temperature to calculate this external temperature and internal temperature;
In addition, surpass the internal temperature added value of setting in advance, so just gone to circulate a notice of to arrive the circular stage of changing the time of air strainer if also be provided with the temperature difference of the external temperature that calculates and internal temperature.
4, change the time representation method according to the said projector air strainer of claim 3, the stage that it is characterized in that circulating a notice of the replacing time of air strainer adopts and shows corresponding information or send buzzing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133722 CN1570755A (en) | 2003-07-15 | 2003-07-15 | Projector air filter replacement time determination device and representation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133722 CN1570755A (en) | 2003-07-15 | 2003-07-15 | Projector air filter replacement time determination device and representation method thereof |
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| CN1570755A true CN1570755A (en) | 2005-01-26 |
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| CN 03133722 Pending CN1570755A (en) | 2003-07-15 | 2003-07-15 | Projector air filter replacement time determination device and representation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876781A (en) * | 2009-04-30 | 2010-11-03 | 松下电器产业株式会社 | Filter element and projection type image display apparatus |
| CN102004381A (en) * | 2009-08-27 | 2011-04-06 | 日立民用电子株式会社 | Projection display device |
| CN101625514B (en) * | 2008-07-08 | 2011-12-14 | 三洋电机株式会社 | Projection image display apparatus |
| CN102566224A (en) * | 2010-12-16 | 2012-07-11 | 三洋电机株式会社 | Video projector |
| WO2014075348A1 (en) * | 2012-11-15 | 2014-05-22 | 创天昱科技(深圳)有限公司 | Method and apparatus for integrating effective use time of filtering net in air purifier |
| CN106457115A (en) * | 2014-06-03 | 2017-02-22 | 豪威株式会社 | Air purifier, method for determining time to replace filter thereof, and device and method for determining filer replacement time pressure differential therefor |
| WO2018090612A1 (en) * | 2016-11-15 | 2018-05-24 | 深圳市光峰光电技术有限公司 | Light source system, projector, and temperature controlling method |
| CN109863451A (en) * | 2016-10-31 | 2019-06-07 | 索尼公司 | Image projection device and information processing method |
-
2003
- 2003-07-15 CN CN 03133722 patent/CN1570755A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625514B (en) * | 2008-07-08 | 2011-12-14 | 三洋电机株式会社 | Projection image display apparatus |
| US8523368B2 (en) | 2008-07-08 | 2013-09-03 | Sanyo Electric Co., Ltd. | Projection display apparatus having stored information for authenticating light source |
| CN101876781A (en) * | 2009-04-30 | 2010-11-03 | 松下电器产业株式会社 | Filter element and projection type image display apparatus |
| CN102004381A (en) * | 2009-08-27 | 2011-04-06 | 日立民用电子株式会社 | Projection display device |
| CN102004381B (en) * | 2009-08-27 | 2012-06-27 | 日立民用电子株式会社 | Projection display device |
| CN102566224A (en) * | 2010-12-16 | 2012-07-11 | 三洋电机株式会社 | Video projector |
| WO2014075348A1 (en) * | 2012-11-15 | 2014-05-22 | 创天昱科技(深圳)有限公司 | Method and apparatus for integrating effective use time of filtering net in air purifier |
| CN106457115A (en) * | 2014-06-03 | 2017-02-22 | 豪威株式会社 | Air purifier, method for determining time to replace filter thereof, and device and method for determining filer replacement time pressure differential therefor |
| US10188976B2 (en) | 2014-06-03 | 2019-01-29 | Coway Co., Ltd. | Air purifier, method for determining time to replace filter thereof, and device and method for determining filter replacement time pressure differential therefor |
| CN106457115B (en) * | 2014-06-03 | 2019-03-12 | 豪威株式会社 | Air purifier, the method for determining the filter replacement time and the device and method for determining filter replacement time pressure difference |
| CN109863451A (en) * | 2016-10-31 | 2019-06-07 | 索尼公司 | Image projection device and information processing method |
| CN109863451B (en) * | 2016-10-31 | 2022-03-01 | 索尼公司 | Image projection apparatus and information processing method |
| WO2018090612A1 (en) * | 2016-11-15 | 2018-05-24 | 深圳市光峰光电技术有限公司 | Light source system, projector, and temperature controlling method |
| CN108073020A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | Light-source system, projecting apparatus and temprature control method |
| CN108073020B (en) * | 2016-11-15 | 2020-05-29 | 深圳光峰科技股份有限公司 | Light source system, projector and temperature control method |
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