CN1928707A - Radiating system - Google Patents
Radiating system Download PDFInfo
- Publication number
- CN1928707A CN1928707A CN 200510103618 CN200510103618A CN1928707A CN 1928707 A CN1928707 A CN 1928707A CN 200510103618 CN200510103618 CN 200510103618 CN 200510103618 A CN200510103618 A CN 200510103618A CN 1928707 A CN1928707 A CN 1928707A
- Authority
- CN
- China
- Prior art keywords
- fan
- temperature
- voltage
- control module
- cooling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Projection Apparatus (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The cooling system in a projector comprises: at least one fan, a temperature sensor, and a control module to control fan rotating speed. When the detected temperature over the maximal threshold, the control module forces the fan adding speed. This invention can control fan speed for proper temperature whatever environment or fan aging.
Description
[technical field]
The invention relates to a kind of cooling system, particularly about a kind of cooling system that is used in the projector.
[background technology]
Because projector has the multiple thermal source element that can produce high heat, the thermal source element for example is light source device, machine plate, power-supply system etc., makes the heat radiation of projector inside, is a key subjects to be solved always.
See also Figure 1A, 1B, Figure 1A is the synoptic diagram of advanced cooling system 4 in the known techniques.Cooling system 4 in the projector 2 includes a plurality of fans (fan) 10, temperature-sensitive sticker (thermal sensor) 12 and control module 14.Fan 10 is in order to produce airflow, to reduce the heat energy that thermal source element 3 is produced in projector 2 inside; Temperature-sensitive sticker 12 is provided with sense ambient temperature near air inlet 5 positions of projector 2.
The environment temperature that senses when temperature-sensitive sticker 12, and after the comparison environment temperature meets in the storage device 1402 institute and stores up the temperature range that concerns among the F01 in advance, then control module 14 is to come drive fan 10 with the pairing voltage of this temperature range, with the rotating speed of control fan 10.For example the environment temperature that senses of temperature-sensitive sticker 12 is 30 degree Celsius, and after institute stored up the temperature range that concerns among the F01 in advance in the comparison storage device 1402, control module 14 should be come drive fan 10 with 10 volts voltage.
Yet, above-mentionedly control the mode of voltage with ambient temperature range, have many problems that need.For example, when projector 2 moves to the air pressure lower, on high mountain, because the radiating effect of thin air is relatively poor, if still provide voltage with original predetermined temperature range, then the rotating speed that fan 10 produced still can relative deficiency and can't suitably be lowered the temperature, and finding is fan 10 continuous speedups, deceleration, speedup, deceleration on practice ..., and can't obtain desirable cooling-down effect all the time.Be directed to this, known techniques can increase a pressure sensor 13, and the variation of pressure sensor still, will significantly raise the cost like this with the voltage that auxiliary adjustment need provide.In addition, when running into the aging or laying dust of fan 10 efficient being reduced, environment temperature and the predetermined not appropriate problem of voltage as described above can take place also, also can produce fan 10 continuous speedups, deceleration, but can't obtain the problem of desirable cooling-down effect all the time.
Moreover, when light source device, machine plate or power-supply system produce high temperature suddenly, because temperature-sensitive sticker 12 is only can sense ambient temperature, change fan 10 rotating speeds so can't learn the generation of those conditions of high temperature and make those high-temperature systems appropriateness coolings, therefore, cause the cooling-down effect of those high-temperature systems not good.So utilize temperature-sensitive sticker 12 sense ambient temperature be located at air inlet 5, with fan 10 voltages of control cooling system 4, its can't direct reacting system in each thermal source element 3 state of temperature and optimal cooling is provided.
Therefore, the object of the present invention is to provide a kind of cooling system that is used in the projector, to address the above problem.
[summary of the invention]
The objective of the invention is to be to provide a kind of cooling system, utilize this cooling system be arranged in the projector, no matter be that the environment change or the fan of projector is aging, the rotating speed of control fan that all can be suitable is so that projector is cooled to suitable temperature regime.
Another object of the present invention is to be to provide a kind of cooling system, utilization is arranged at this cooling system in the projector, and the suitable setting of temperature-sensitive sticker position, come cooling heating element with the rotating speed of suitable control fan, so that projector is cooled to suitable temperature regime.
In order to achieve the above object, the invention provides a kind of cooling system, is to be arranged in the projector, and dispels the heat in order to the heat energy that at least one thermal source element in this projector is produced, and it is characterized in that: this cooling system is to comprise:
At least one fan (fan) is in order to produce airflow to disperse the heat energy that this thermal source element is produced;
One temperature-sensitive sticker (thermal sensor) is arranged in this projector, is in order to the temperature in this projector of sensing; And
One control module is to be arranged in this projector, and according to the minimum threshold temperature and the highest threshold temperature of pre-storage, to control the rotating speed of this fan, this highest threshold temperature is greater than this minimum threshold temperature;
When this temperature-sensitive sticker institute sensed temperature surpasses this during high threshold temperature, this control module is that this fan of control increases rotating speed, and when this temperature-sensitive sticker institute sensed temperature was lower than this minimum threshold temperature, this control module was that this fan of control reduces rotating speed.
Described cooling system is characterized in that: this temperature-sensitive sticker is contiguous this thermal source element that is arranged at.
Described cooling system is characterized in that: this thermal source element is to be selected from by light source device, machine plate and power-supply system to be formed thermal source element in the group.
Described cooling system is characterized in that: this temperature-sensitive sticker is contiguous this light source device that is arranged at.
Described cooling system is characterized in that: this temperature-sensitive sticker is to be arranged between this light source device and this power-supply system.
Described cooling system is characterized in that: this control module also comprises:
One storage device is in order to store this minimum threshold temperature and this highest threshold temperature; And
One judge module is in order to judging this temperature-sensitive sticker institute sensed temperature, with in this storage device the highest threshold temperature, the relation of minimum threshold temperature of pre-storage.
Described cooling system is characterized in that: this control module also comprises a voltage control module, is the voltage of control one this fan that power-supply system is supplied, to control the rotating speed of this fan.
Described cooling system is characterized in that: the voltage that described this voltage control module is controlled this fan to be to increase and to reduce this rotation speed of the fan, be with the time to the gradient of voltage to increase and to reduce voltage.
Described cooling system, it is characterized in that: this voltage control module is when increasing and reducing the voltage of this fan, this control module is further to judge a voltage that increases and reduce and the relation of fan maximum limit voltage and a fan lower limit voltage, the voltage that this fan can bear is between this fan maximum limit voltage and this fan lower limit voltage, when the voltage that is reduced is lower than this fan lower limit voltage, this voltage control module is to give this fan with this fan lower limit voltage supply electric energy, when the voltage that is increased was higher than this fan maximum limit voltage, this voltage control module was to give this fan with this fan maximum limit voltage supply electric energy.
The present invention also provides a kind of cooling system, is to be arranged in the projector, and dispels the heat in order to the heat energy that at least one thermal source element in this projector is produced that it is characterized in that: this cooling system is to comprise:
At least one fan (fan) is in order to produce airflow to disperse the heat energy that this thermal source element is produced;
One temperature-sensitive sticker (thermal sensor) is arranged in this projector and is adjacent to this thermal source element, is the temperature in order to this thermal source element of sensing; And
One control module is to be connected in this temperature-sensitive sticker and this fan, to control this rotation speed of the fan according to this temperature-sensitive sticker sensed temperature.
Described cooling system, it is characterized in that: this control module also comprises the minimum threshold temperature and the highest threshold temperature of a pre-storage, this the highest threshold temperature is greater than this minimum threshold temperature, when this temperature-sensitive sticker institute sensed temperature surpasses this during high threshold temperature, this control module is that this fan of control increases rotating speed, when this temperature-sensitive sticker institute sensed temperature was lower than this minimum threshold temperature, this control module was that this fan of control reduces rotating speed.
Described cooling system is characterized in that: this thermal source element is to be selected from by light source device, machine plate and power-supply system to be formed thermal source element in the group.
Described cooling system is characterized in that: this temperature-sensitive sticker is contiguous this light source device that is arranged at.
Described cooling system is characterized in that: this temperature-sensitive sticker is to be arranged between this light source device and this power-supply system.
Described cooling system is characterized in that: this temperature-sensitive sticker is to be arranged between this light source device and this machine plate.
Described cooling system is characterized in that: this control module also comprises a voltage control module, is the voltage of control one this fan that power-supply system is supplied, to control the rotating speed of this fan.
Described cooling system, it is characterized in that: this voltage control module is when increasing and reducing the voltage of this fan, this control module is further to judge a voltage that increases and reduce and the relation of fan maximum limit voltage and a fan lower limit voltage, the voltage that this fan can bear is between this fan maximum limit voltage and this fan lower limit voltage, when the voltage that is reduced is lower than this fan lower limit voltage, this voltage control module is to give this fan with this fan lower limit voltage supply electric energy, when the voltage that is increased was higher than this fan maximum limit voltage, this voltage control module was to give this fan with this fan maximum limit voltage supply electric energy.
In sum, the invention relates to a kind of being installed in as the cooling system in the device of projector, is in order to the heat energy that is produced as the thermal source element of light source device, machine plate, power-supply system in this projector is dispelled the heat.This cooling system is to comprise at least one fan (fan), a temperature-sensitive sticker (thermal sensor) and a control module.
This fan is in order to produce airflow to disperse the heat energy that this thermal source element is produced.
This temperature-sensitive sticker is arranged in this device, is in order to the environment temperature in this device of sensing.
This control module is that to control the rotating speed of this fan, wherein this highest threshold temperature is greater than this minimum threshold temperature according to the minimum threshold temperature and the highest threshold temperature of pre-storage.
When the environment temperature of this temperature-sensitive sticker institute sensing surpasses this during high threshold temperature, this control module is that this fan of control increases rotating speed, when the environment temperature of this temperature-sensitive sticker institute sensing was lower than this minimum threshold temperature, this control module was that this fan of control reduces rotating speed.
Therefore, the present invention is used for the cooling system of projector, utilize control module according to the comparison of environment temperature with the highest threshold temperature, minimum threshold temperature, voltage with control supply fan electric energy, no matter the environment change or the fan that are projector are aging, the rotating speed of control fan that all can be appropriate can make projector be cooled to appropriate temperature regime.The present invention is used for the cooling system of projector, utilizes the suitable setting of temperature-sensitive sticker position, comes cooling heating element with the rotating speed of suitable control fan, can make projector be cooled to suitable temperature regime.
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
[description of drawings]
Figure 1A is the synoptic diagram of known cooling system;
Figure 1B is the synoptic diagram of the control module of known cooling system among Figure 1A;
Fig. 2 is the synoptic diagram of cooling system of the present invention;
Fig. 3 is the synoptic diagram of control module of the present invention; And
Fig. 4 is the process flow diagram of determination methods that judge module of the present invention carries out.
[embodiment]
See also Fig. 2, Fig. 2 is the synoptic diagram of cooling system 32 of the present invention.The invention relates to a kind of being installed in as the cooling system in the device of projector 30 32, is in order to the heat energy that is produced as the thermal source element 34 of light source device, machine plate, power-supply system in the projector 30 is dispelled the heat.Cooling system 32 is to comprise at least one fan (fan) 42, a temperature-sensitive sticker (thermal sensor) 44 and one control module 46.
These fans 42 are in order to produce airflow to disperse the heat energy that thermal source element 34 is produced, the design of general projector 30 is from projector 30 outside projector 30 inside that import by air intake opening, after machine plate, power-supply system, pass through light source device again, at last the airflow of this high heat is derived projector 30 outsides.
Temperature-sensitive sticker 44 is arranged in the projector 30, is in order to the temperature in the sensing projector 30.Wherein, temperature-sensitive sticker 44 is can be close to be arranged at thermal source element 34, in general, the airflow that fan 42 is produced is towards thermal source element 34, preferred embodiment is that temperature-sensitive sticker 44 is arranged at 42 in the light source device of thermal source element 34 and fan, better position is that temperature-sensitive sticker 44 is arranged between the power-supply system and light source device of thermal source element 34, with the temperature variation of direct sensing power-supply system and light source device.Control module 46 is minimum threshold temperature and the highest threshold temperatures according to pre-storage, and with the rotating speed of control fan 42, wherein this highest threshold temperature is greater than this minimum threshold temperature.
When 44 sensed temperature of temperature-sensitive sticker surpass this during high threshold temperature, control module 46 is that control fan 42 increases rotating speeds, and when 44 sensed temperature of temperature-sensitive sticker were lower than this minimum threshold temperature, control module 46 was that control fan 42 reduces rotating speeds.Whereby, device 30 temperature inside are maintained in the appropriate scope.
Further see also Fig. 3, Fig. 3 is the synoptic diagram of control module 46 of the present invention.Control module 46 more comprises a storage device 4602, a judge module 4604 and a voltage control module 4606.
Judge module 4604 is in order to judging the relation of the highest threshold temperature T b that institute stores up in advance in 44 sensed temperature of temperature-sensitive sticker and the storage device 4602, and the relation of judgement 44 sensed temperature of temperature-sensitive sticker and minimum threshold temperature T c.
When judge module 4604 was judged 44 sensed temperature of temperature-sensitive sticker and surpassed the highest threshold temperature T b, voltage control module 4606 was to increase the voltage of fan 42 to increase rotating speed.When judge module 4604 was judged 44 sensed temperature of temperature-sensitive sticker and is lower than minimum threshold temperature T c, voltage control module 4606 was that the voltage of the low fan 42 of increase and decrease is to reduce rotating speed.
Wherein, the voltage of described voltage control module 4606 control fans 42 to be to increase and to reduce fan 42 rotating speeds, be with the time to the gradient of voltage relationship to increase and to reduce voltage.So, just can make the operation of cooling system 32 comparatively smooth-going.
Further, voltage control module 4606 is when increasing and reduce the voltage of fan 42, and control module 46 is further to judge a voltage that increases and reduce and the relation of fan maximum limit voltage and a fan lower limit voltage.The voltage that fan 42 can bear is between fan maximum limit voltage and fan lower limit voltage.
When the voltage that is reduced is lower than fan lower limit voltage, voltage control module 4606 is to give fan 42 with lower limit voltage supply electric energy, when the voltage that is increased was higher than fan maximum limit voltage, voltage control module 4606 was to continue the supply electric energy with fan maximum limit voltage to give fan 42.
See also Fig. 4, Fig. 4 is the process flow diagram of determination methods that judge module 4604 of the present invention carries out.The judge module 4604 of control module 46 carry out determination methods and comprise the following step:
Step S02: confirm whether temperature surpasses the highest threshold temperature?
If is step S02 for being then to carry out step S04: whether detect fan 42 voltages above fan maximum limit voltage?
If step S04 is for being then to carry out step S06: the voltage that operates as supply fan 42 with fan maximum limit voltage then.
If step S04 for not, then carries out step S08: then the gradient of voltage relationship is increased fan 42 voltages, with the rotating speed of control fan 42 with the time.
Does if step S02 is not, then carry out step S10: whether detected temperatures surpass the minimum threshold temperature?
If step S10 is for being then to carry out step S12: then keep supplying fan 42, so that fan 42 turning operations with primary voltage.
If step S10 then carries out step S14: detect fan 42 rotating speeds and be lower than the pairing slow-speed of revolution restriction of fan lower limit voltage for not?
If step S14 is for being then to carry out step S16: the voltage that operates as supply fan 42 with fan lower limit voltage then.
If step S14 for not, then carries out step S18: then with the time to the gradient of voltage relationship to reduce fan 42 voltages, with the rotating speed of control fan 42.
Therefore, the cooling system 32 that is used for projector by the present invention, utilize the temperature-sensitive sticker 44 contiguous thermal source elements 34 that are arranged to be provided with, temperature variation with those thermal source elements of direct sensing, utilize the sensing temperature and the highest threshold temperature of control module 46 again according to temperature-sensitive sticker 44, the comparison of minimum threshold temperature, voltage with control supply fan 42 electric energy, therefore, no matter be that the aging or thermal source element of the environment change of projector or fan 42 is when producing high temperature suddenly, the rotating speed of control fan 42 that all can be appropriate is so that projector is cooled to appropriate temperature regime.
Moreover, when the too high situation of light source device occurrence temperature, for example: undesired shutdown causes light source device suitably to cool off, can see through the temperature of temperature-sensitive sticker 44 direct sensing light source devices, utilize control fan 42 suitable cool down lamp source apparatus again, and can control the action of lighting a lamp that projector stops to carry out light source device earlier, and treat temperature-sensitive sticker 44 sense the temperature of light source device normal after, carry out the action of lighting a lamp of light source device again, whereby, except that projector being cooled to the appropriate temperature, also can reducing the number of times of failure of lighting a lamp, and can avoid light source device to burn because of overheated.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.
[main element symbol description]
Projector's 2 pressure sensors 13
Projector's 30 cooling systems 4,32
Temperature- sensitive sticker 12,44 control modules 14,46
Claims (17)
1, a kind of cooling system is to be arranged in the projector, and dispels the heat in order to the heat energy that at least one thermal source element in this projector is produced, and it is characterized in that: this cooling system is to comprise:
At least one fan is in order to produce airflow to disperse the heat energy that this thermal source element is produced;
One temperature-sensitive sticker is arranged in this projector, is in order to the temperature in this projector of sensing; And
One control module is to be arranged in this projector, and according to the minimum threshold temperature and the highest threshold temperature of pre-storage, to control the rotating speed of this fan, this highest threshold temperature is greater than this minimum threshold temperature;
When this temperature-sensitive sticker institute sensed temperature surpasses this during high threshold temperature, this control module is that this fan of control increases rotating speed, and when this temperature-sensitive sticker institute sensed temperature was lower than this minimum threshold temperature, this control module was that this fan of control reduces rotating speed.
2, cooling system as claimed in claim 1 is characterized in that: this temperature-sensitive sticker is contiguous this thermal source element that is arranged at.
3, cooling system as claimed in claim 1 is characterized in that: this thermal source element is to be selected from by light source device, machine plate and power-supply system to be formed thermal source element in the group.
4, cooling system as claimed in claim 3 is characterized in that: this temperature-sensitive sticker is contiguous this light source device that is arranged at.
5, cooling system as claimed in claim 3 is characterized in that: this temperature-sensitive sticker is to be arranged between this light source device and this power-supply system.
6, cooling system as claimed in claim 1 is characterized in that: this control module also comprises:
One storage device is in order to store this minimum threshold temperature and this highest threshold temperature; And
One judge module is in order to judging this temperature-sensitive sticker institute sensed temperature, with in this storage device the highest threshold temperature, the relation of minimum threshold temperature of pre-storage.
7, cooling system as claimed in claim 1 is characterized in that: this control module also comprises a voltage control module, is the voltage of control one this fan that power-supply system is supplied, to control the rotating speed of this fan.
8, cooling system as claimed in claim 7 is characterized in that: the voltage that described this voltage control module is controlled this fan to be to increase and to reduce this rotation speed of the fan, be with the time to the gradient of voltage to increase and to reduce voltage.
9, cooling system as claimed in claim 7, it is characterized in that: this voltage control module is when increasing and reducing the voltage of this fan, this control module is further to judge a voltage that increases and reduce and the relation of fan maximum limit voltage and a fan lower limit voltage, the voltage that this fan can bear is between this fan maximum limit voltage and this fan lower limit voltage, when the voltage that is reduced is lower than this fan lower limit voltage, this voltage control module is to give this fan with this fan lower limit voltage supply electric energy, when the voltage that is increased was higher than this fan maximum limit voltage, this voltage control module was to give this fan with this fan maximum limit voltage supply electric energy.
10, a kind of cooling system is to be arranged in the projector, and dispels the heat in order to the heat energy that at least one thermal source element in this projector is produced, and it is characterized in that: this cooling system is to comprise:
At least one fan is in order to produce airflow to disperse the heat energy that this thermal source element is produced;
One temperature-sensitive sticker is arranged in this projector and is adjacent to this thermal source element, is the temperature in order to this thermal source element of sensing; And
One control module is to be connected in this temperature-sensitive sticker and this fan, to control this rotation speed of the fan according to this temperature-sensitive sticker sensed temperature.
11, cooling system as claimed in claim 10, it is characterized in that: this control module also comprises the minimum threshold temperature and the highest threshold temperature of a pre-storage, this the highest threshold temperature is greater than this minimum threshold temperature, when this temperature-sensitive sticker institute sensed temperature surpasses this during high threshold temperature, this control module is that this fan of control increases rotating speed, when this temperature-sensitive sticker institute sensed temperature was lower than this minimum threshold temperature, this control module was that this fan of control reduces rotating speed.
12, cooling system as claimed in claim 10 is characterized in that: this thermal source element is to be selected from by light source device, machine plate and power-supply system to be formed thermal source element in the group.
13, cooling system as claimed in claim 12 is characterized in that: this temperature-sensitive sticker is contiguous this light source device that is arranged at.
14, cooling system as claimed in claim 12 is characterized in that: this temperature-sensitive sticker is to be arranged between this light source device and this power-supply system.
15, cooling system as claimed in claim 12 is characterized in that: this temperature-sensitive sticker is to be arranged between this light source device and this machine plate.
16, cooling system as claimed in claim 10 is characterized in that: this control module also comprises a voltage control module, is the voltage of control one this fan that power-supply system is supplied, to control the rotating speed of this fan.
17, cooling system as claimed in claim 16, it is characterized in that: this voltage control module is when increasing and reducing the voltage of this fan, this control module is further to judge a voltage that increases and reduce and the relation of fan maximum limit voltage and a fan lower limit voltage, the voltage that this fan can bear is between this fan maximum limit voltage and this fan lower limit voltage, when the voltage that is reduced is lower than this fan lower limit voltage, this voltage control module is to give this fan with this fan lower limit voltage supply electric energy, when the voltage that is increased was higher than this fan maximum limit voltage, this voltage control module was to give this fan with this fan maximum limit voltage supply electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510103618 CN1928707A (en) | 2005-09-06 | 2005-09-06 | Radiating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510103618 CN1928707A (en) | 2005-09-06 | 2005-09-06 | Radiating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1928707A true CN1928707A (en) | 2007-03-14 |
Family
ID=37858714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510103618 Pending CN1928707A (en) | 2005-09-06 | 2005-09-06 | Radiating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1928707A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435977B (en) * | 2007-11-12 | 2010-11-10 | 鸿富锦精密工业（深圳）有限公司 | Projector and overheating protection method thereof |
| CN101630113B (en) * | 2009-08-04 | 2011-03-23 | 苏州佳世达光电有限公司 | Single fan projecting apparatus |
| US7922334B2 (en) | 2007-04-05 | 2011-04-12 | Sanyo Electric Co., Ltd. | Multistage cooling system for projector |
| US7989747B2 (en) | 2007-08-31 | 2011-08-02 | Hon Hai Precision Industry Co., Ltd. | Projector having a controlled rechargeable cell and heat dissipation system of the projector for cool down after power off |
| US8408715B2 (en) | 2009-07-20 | 2013-04-02 | Qisda Corporation | Projector with single fan |
| CN104317149A (en) * | 2014-10-09 | 2015-01-28 | 苏州佳世达光电有限公司 | Projection device |
| CN107942610A (en) * | 2017-11-28 | 2018-04-20 | 苏州佳世达光电有限公司 | Projector radiating control system and method |
| CN112763805A (en) * | 2019-11-06 | 2021-05-07 | 中强光电股份有限公司 | Heat dissipation device and detection method thereof |
| CN114594649A (en) * | 2020-12-02 | 2022-06-07 | 卡西欧计算机株式会社 | Projection apparatus, lighting control method, and medium |
-
2005
- 2005-09-06 CN CN 200510103618 patent/CN1928707A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7922334B2 (en) | 2007-04-05 | 2011-04-12 | Sanyo Electric Co., Ltd. | Multistage cooling system for projector |
| CN101281355B (en) * | 2007-04-05 | 2011-07-27 | 三洋科技中心(深圳)有限公司 | Projection machine and component for reducing projection machine temperature |
| US7989747B2 (en) | 2007-08-31 | 2011-08-02 | Hon Hai Precision Industry Co., Ltd. | Projector having a controlled rechargeable cell and heat dissipation system of the projector for cool down after power off |
| CN101435977B (en) * | 2007-11-12 | 2010-11-10 | 鸿富锦精密工业（深圳）有限公司 | Projector and overheating protection method thereof |
| US8408715B2 (en) | 2009-07-20 | 2013-04-02 | Qisda Corporation | Projector with single fan |
| CN101630113B (en) * | 2009-08-04 | 2011-03-23 | 苏州佳世达光电有限公司 | Single fan projecting apparatus |
| CN104317149A (en) * | 2014-10-09 | 2015-01-28 | 苏州佳世达光电有限公司 | Projection device |
| CN104317149B (en) * | 2014-10-09 | 2016-08-24 | 苏州佳世达光电有限公司 | Projection arrangement |
| CN107942610A (en) * | 2017-11-28 | 2018-04-20 | 苏州佳世达光电有限公司 | Projector radiating control system and method |
| CN112763805A (en) * | 2019-11-06 | 2021-05-07 | 中强光电股份有限公司 | Heat dissipation device and detection method thereof |
| CN112763805B (en) * | 2019-11-06 | 2023-10-20 | 中强光电股份有限公司 | Heat dissipation device and detection method thereof |
| CN114594649A (en) * | 2020-12-02 | 2022-06-07 | 卡西欧计算机株式会社 | Projection apparatus, lighting control method, and medium |
| US11934087B2 (en) | 2020-12-02 | 2024-03-19 | Casio Computer Co., Ltd. | Temperature control method for a projector and projector and non-transitory recording medium implementing temperature control method |
| CN114594649B (en) * | 2020-12-02 | 2024-03-26 | 卡西欧计算机株式会社 | Projection device, lighting control method and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1928707A (en) | Radiating system | |
| CN1295580C (en) | Information processing unit and cooling method thereof | |
| TWI294550B (en) | ||
| CN100338414C (en) | Cogeneration system and method for controlling the same | |
| CN101487586A (en) | LED illumination apparatus and its cooling method | |
| CN1182757C (en) | High frequency heater and cooling system for magnetron driving power in said device | |
| CN1786617A (en) | Cogeneration system | |
| US8482207B2 (en) | Temperature controlling system for LED module | |
| CN1804508A (en) | Cogeneration system | |
| CN1991570A (en) | Portable projector | |
| CN102338306A (en) | Rotating lighting device and heat dissipating control method thereof | |
| CN111290204A (en) | Noise reduction system of laser projector and control method thereof | |
| KR20150072266A (en) | Self-cooling system for solar cell module | |
| JP2011129447A (en) | Lighting tool for vehicle | |
| CN1758171A (en) | Method for automatic fine regulating rotation speed of heat radiation fan | |
| CN1901791A (en) | Heat exchanger of electronic device and its heat exchange control method | |
| CN1078682C (en) | Fan control method and device | |
| CN202203694U (en) | Radiating type light-emitting diode (LED) bulb lamp | |
| CN1719137A (en) | Control method of ventilation system air volume | |
| CN2694353Y (en) | Computer power supplying device capable of radiating heat after shutting down | |
| CN1873522A (en) | Projector, and method of heat elimination | |
| CN202176927U (en) | LED lighting heat dissipation system | |
| KR20090099781A (en) | Diesel engine equipped with a water pump and a method for controlling the same | |
| CN101042520A (en) | Projection device and heat sinking method thereof | |
| CN2658824Y (en) | Noise control and heat sink integrated structure of computer internal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |