CN2772191Y - Electronic device with radiating control circuit - Google Patents
Electronic device with radiating control circuit Download PDFInfo
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- CN2772191Y CN2772191Y CN 200520005869 CN200520005869U CN2772191Y CN 2772191 Y CN2772191 Y CN 2772191Y CN 200520005869 CN200520005869 CN 200520005869 CN 200520005869 U CN200520005869 U CN 200520005869U CN 2772191 Y CN2772191 Y CN 2772191Y
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Abstract
The utility model discloses an electronic device with a radiation control circuit. The electronic device is connected with a power supply, and the electronic device further comprises a backup power module and a power switching module, wherein the power supply of the electronic device supplies power for a radiation control circuit via the power switching module which is connected with the backup power module. When the power supply of the electronic device is cut off, the device can supply power to the radiation control circuit via the backup power module. The utility model can automatically supply power for a radiating system via the backup power module when the electronic device is accidentally powered off or power supply is cut off too early after shut-down; therefore, the radiating system can continue working. The utility model effectively prevents the shorter service life or damages of a bulb and other high-temperature components in the electronic device caused by delayed heat radiation, so that the reliability of the whole machine is improved, and the service life of the electronic device is prolonged. Thus, the users can leave with the electronic device immediately after use, so that the utility model saves precious time for the users.
Description
Technical field
The utility model relates to technical field of electronic equipment, relates to a kind of electronic equipment with radiating control circuit or rather.
Background technology
At present, a lot of electronic equipments all can produce high temperature, and therefore needing within it, portion is provided with cooling system, by the cooling system processing of lowering the temperature, and electronic equipment still needs cooling system work a period of time behind normal shutdown, so that the high-temperature component in the electronic equipment can access abundant cooling.Such as, powerful Switching Power Supply, powerful radio transmitter, projector etc.
Be example below with the projector, the cooling system and the shortcoming thereof of electronic equipment is described.
Projector is a kind of large-screen display equipment commonly used, is widely used in aspects such as commercial exhibition, school instruction, commercial amusement and home entertaining.The basic functional principle of projector is: utilize bulb or other luminescent device to produce light source, and modulate according to the figure of input or vision signal light that light source is sent and to produce projection image, utilize optical system to carry out magnified image again, thereby reach the purpose of large scale display.
Specifically, projector mainly is made of optical system and electronic system, is example with typical orthographic projection machine, it is inner form and the basic principle block diagram as shown in Figure 1, the orthographic projection machine comprises optical system 101, electronic system 102 and power supply 108.Optical system 101 comprises light source 103 and light engine 104; Electronic system 102 comprises driver module 105, front end image processing module 106, input/output signal interface 107, fan control circuitry 109, fan 110 and temperature sensor 111.Wherein, the AC power of the input termination 100～240V of power supply 108, output links to each other with front end image processing module 106, driver module 105, optical system 101 and fan control circuitry 109, is these part power supplies.
Fan control circuitry 109 in the electronic system 102, fan 110 and temperature sensor 111 have constituted cooling system, fan control circuitry 109 is connected with fan 110 and temperature sensor 111, control the running of fan 110 according to the temperature value that temperature sensor 111 records, thereby dispel the heat for light source 103 parts such as grade.Fan control circuitry 109 can also link to each other with front end image processing module 106, when projector's operate as normal, normal high level signal of indication power supply of front end image processing module 106 outputs is given fan control circuitry 109, and when projector's normal shutdown, power supply accident power-off or when after shutdown, cutting off the electricity supply too early, high level signal by 106 outputs of front end image processing module has disappeared before, therefore fan control circuitry 109 can remain in operation a period of time by control fan 110, is fully cooled off until parts such as bulbs.Wherein, fan control circuitry 109 control fans 110 remain in operation a period of time, can be at definite high level signal timer of back startup that disappears, and control fan 110 over time according to this timer and shut down; Can also be after definite high level signal disappears, the rotating speed of fan 110 is transferred to maximum, to realize heat radiation as soon as possible.
Why the cooling system in the orthographic projection machine being done above-mentioned setting, is because the projection light source that existing projector adopted is generally metal halide lamp or high-pressure mercury lamp, and these lamps all can produce very high temperature when work.As shown in Figure 1, cooling system mostly adopts fan in the air blast cooling mode high temperature parts such as bulb to be dispelled the heat, and behind projector's normal shutdown, fan will remain in operation a period of time, is cooled off fully until parts such as bulbs.
That is to say that projector even carried out normal power-off operation, can not cut off AC power immediately, and must wait until after its internal cooling is finished and could cut off AC power after finishing using.And if if the AC power accident power-off has in use taken place in projector, or after shutdown, cut off AC power prematurely, then can cause projector's internal temperature to surpass safe range because of its cooling system quits work, thereby quicken the aging of parts, and reduce the reliability of complete machine, particularly bulb is easy to shorten the life-span because of can not in time dispelling the heat, or even bursts breaking-up, tends to cause bigger loss to the user.
In addition, because existing projector is after the shutdown of finishing using, must wait for a period of time and to cut off AC power, this has just brought very big inconvenience to the user, especially those carry the business users that projector demonstrates, usually can not pull out AC power immediately especially and can't carry projector immediately and leave, thereby incur loss through delay the valuable operating time, and influence operating efficiency because of projector.
In sum, the electronic equipment of internal high temperature work at present often needs to wait for a period of time and could cut off AC power after shutdown, and if the electronic equipment accident power-off, or cut off AC power prematurely after the shutdown, aging, the reliability that reduces electronic equipment that then can accelerated electron equipment.
The utility model content
In view of this, subject matter to be solved in the utility model is to provide a kind of electronic equipment with radiating control circuit, can cutting off the electricity supply when electronic equipment shuts down, and can protect electronic equipment when accident is cut off the power supply.
For addressing the above problem, the utility model provides following technical scheme:
A kind of electronic equipment with radiating control circuit, described electronic equipment is connected with power supply, and this electronic equipment further comprises: back-up source module and power supply handover module,
The power supply of electronic equipment is the radiating control circuit power supply by the power supply handover module;
Described power supply handover module also is connected with the back-up source module, when the power cut-off of electronic equipment, is the radiating control circuit power supply by the back-up source module.
Described back-up source module is a back-up source.
Described back-up source module comprises: back-up source and voltage conversion circuit; Described voltage conversion circuit carries out voltage transformation to back-up source, and the back-up source behind the voltage transformation is transported to the power supply handover module.
Described back-up source is a dry cell.
Described back-up source comprises charging circuit and storage battery; Described charging circuit is a storage battery power supply by the power supply in the electronic equipment.
Described power supply handover module comprises two diodes, the positive pole of a diode is connected with the back-up source module, the positive pole of another diode is connected with the power supply of electronic equipment, the negative pole of two diodes all is connected with the power connection end of radiating control circuit, and the forward conduction voltage drop of the diode that is connected with the back-up source module is greater than the forward conduction voltage drop of the diode that is connected with electronic equipment power source.
Described power supply handover module is made up of relay.
Described relay is made up of electromagnet and single-pole double-throw switch (SPDT), the normally opened contact of described electromagnet and single-pole double-throw switch (SPDT) is connected with the power supply of electronic equipment, the normally-closed contact of single-pole double-throw switch (SPDT) is connected with the back-up source module, and the hilted broadsword of single-pole double-throw switch (SPDT) is connected with the power connection end of radiating control circuit.
Described radiating control circuit is a fan control circuitry.
Described electronic equipment is projector, high power switching power supply or high-power wireless electricity transmitter.
The utility model is by being provided with back-up source module and power supply handover module in electronic equipment, make when electronic equipment is cut off the electricity supply after accident outage and shutdown too early, can be the cooling system power supply by the back-up source module automatically, make cooling system to work on, prevented in the electronic equipment high temperature parts such as bulb effectively in these cases because of dispelling the heat untimely shortening life-span or the damage that causes, and improved complete machine reliability, prolonged useful life of electronic equipment.
Electronic equipment provided by the utility model is owing to be provided with back-up source module and power supply handover module, make the user of electronic equipment of projector and so on after use, to cut off the electricity supply immediately, and needn't wait until that its internal cooling finishes, thereby making the user to carry electronic equipment immediately after use leaves, for the user has saved valuable time, for the operating efficiency that improves the user has been made contribution.
Electronic equipment provided by the utility model is that back-up source module and power supply handover module are set on the original basis, and this scheme is easy to realization, and very little to the change of existing equipment.
In addition, back-up source module provided by the utility model and power supply handover module can also further be other parts that need power power supplies in the electronic equipment under the situation of cutting off the electricity supply too early etc. after electronic equipment accident power-off and the shutdown.
Description of drawings
Fig. 1 forms and the basic principle block diagram for the inside of existing typical orthographic projection machine;
Fig. 2 is the structure chart of electronic equipment provided by the utility model;
Fig. 3 is that the inside of the projector among first kind of embodiment of the utility model is formed and the basic principle block diagram;
Fig. 4 is that the inside of the projector among second kind of embodiment of the utility model is formed and the basic principle block diagram.
Embodiment
Electronic equipment at present band radiating control circuit, the utility model mainly is to increase back-up source module and power supply handover module in electronic equipment, make electronic equipment when original power cut-off, can continue as the radiating control circuit power supply by the back-up source module.
Below in conjunction with drawings and the specific embodiments the utility model scheme is described in further detail.
Back-up source module that the utility model increases in electronic equipment and power supply handover module are as shown in Figure 2, mainly be original power supply to be received radiating control circuit by the power supply handover module, and the power supply of back-up source module is received radiating control circuit by this power supply handover module, and when original power supply normal power supply, by original power supply is the radiating control circuit power supply, when original power cut-off, be the radiating control circuit power supply by the back-up source module.
Wherein, the back-up source module can directly be the back-up source that the radiating control circuit required voltage can be provided, and this back-up source directly is connected with the power supply handover module; Because the power supply that directly provides may not meet the requirement of radiating control circuit to voltage, therefore, this back-up source module can also be made up of back-up source and voltage conversion circuit, by voltage conversion circuit back-up source is carried out voltage transformation, and the back-up source behind the voltage transformation is transported to the power supply handover module.
Back-up source can be a dry cell.For saving user's use cost, back-up source can also be made up of charging circuit and storage battery, and charging circuit can be storage battery power supply by original power supply of electronic equipment.Wherein, storage battery can be the battery of lithium battery and so on, because capacity is the charging interval of the lithium battery of 1000mAh to be approximately 2～3 hours, but air feed is fanned about 20 minutes of continuous running behind the full charge, therefore can satisfy the electric weight requirement that projector dispels the heat after outage.
The power supply handover module can be the circuit that can realize that arbitrarily power supply switches.Such as, this power supply handover module can be shown in the circuit among Fig. 3, and Fig. 3 is to be example with the projector, and the projector architecture block diagram behind back-up source module and the power supply handover module is set in projector.This power supply handover module specifically is made up of two diodes, the positive pole of a diode 305 is connected with the back-up source module, the positive pole of another diode 306 is connected with original power supply of electronic equipment, the negative pole of these two diodes all is connected with the power connection end of radiating control circuit, in addition, also need the forward conduction voltage drop of the forward conduction voltage drop of diode 305 greater than diode 306.Like this, when projector's operate as normal, because the forward conduction voltage drop of diode 305 is greater than the forward conduction voltage drop of diode 306, therefore diode 305 ends, diode 306 conductings, and radiating control circuit is by the original power supply power supply of electronic equipment, and when being cut off too early when original power supply accident power-off or after shutdown, original power supply is stopped power supply, and diode 305 conductings this moment are automaticallyed switch to by the back-up source module being the radiating control circuit power supply.This shows, can realize the isolation of two-way power supply by the circuit that these two diodes are formed, and realize the automatic switchover of two-way power supply, guaranteed uninterrupted power supply radiating control circuit.Certainly, if the temperature value that the temperature sensor that is connected with radiating control circuit records has dropped in the safe scope, then radiating control circuit is thought and has been finished radiating treatment, can close the heat dissipation equipment of fan and so on.
This power supply handover module can be shown in the circuit among Fig. 4, Fig. 4 also is to be example with the projector, projector architecture block diagram behind back-up source module and the power supply handover module is set in projector, just is the power supply handover module has been adopted different circuit structures with Fig. 3 difference.Power supply handover module among Fig. 4 is to be realized by relay, this relay specifically can comprise electromagnet and single-pole double-throw switch (SPDT), the electromagnet in the relay and the normally opened contact of single-pole double-throw switch (SPDT) are connected with the power supply of electronic equipment, the normally-closed contact of single-pole double-throw switch (SPDT) is connected with the back-up source module, and the hilted broadsword of single-pole double-throw switch (SPDT) is connected with the power connection end of radiating control circuit.When projector normally moves, there is electric current to pass through in the electromagnet coil of relay, make its contact be in attracting state, therefore radiating control circuit is powered by original power supply, and when being cut off too early when original power supply accident power-off or after shutdown, original power supply is stopped power supply, electromagnet coil does not have electric current to pass through, its contact discharges, so the output of back-up source module is connected to the feeder ear of radiating control circuit, thereby realizes the power supply handoff functionality.
The above only is preferred embodiment of the present utility model, not in order to limit protection range of the present utility model.Any the people thinkable variation of institute or replacement in technical scope provided by the utility model of being familiar with this technology all should be encompassed in the protection range of the present utility model.
Claims (10)
1, a kind of electronic equipment with radiating control circuit, described electronic equipment is connected with power supply, it is characterized in that, and this electronic equipment further comprises: back-up source module and power supply handover module,
The power supply of electronic equipment is the radiating control circuit power supply by the power supply handover module;
Described power supply handover module also is connected with the back-up source module, when the power cut-off of electronic equipment, is the radiating control circuit power supply by the back-up source module.
2, electronic equipment according to claim 1 is characterized in that, described back-up source module is a back-up source.
3, electronic equipment according to claim 1 is characterized in that, described back-up source module comprises: back-up source and voltage conversion circuit; Described voltage conversion circuit carries out voltage transformation to back-up source, and the back-up source behind the voltage transformation is transported to the power supply handover module.
According to claim 2 or 3 described electronic equipments, it is characterized in that 4, described back-up source is a dry cell.
5, according to claim 2 or 3 described electronic equipments, it is characterized in that described back-up source comprises charging circuit and storage battery; Described charging circuit is a storage battery power supply by the power supply in the electronic equipment.
6, according to claim 1,2 or 3 described electronic equipments, it is characterized in that, described power supply handover module comprises two diodes, the positive pole of a diode is connected with the back-up source module, the positive pole of another diode is connected with the power supply of electronic equipment, the negative pole of two diodes all is connected with the power connection end of radiating control circuit, and the forward conduction voltage drop of the diode that is connected with the back-up source module is greater than the forward conduction voltage drop of the diode that is connected with electronic equipment power source.
According to claim 1,2 or 3 described electronic equipments, it is characterized in that 7, described power supply handover module is made up of relay.
8, electronic equipment according to claim 7, it is characterized in that, described relay is made up of electromagnet and single-pole double-throw switch (SPDT), the normally opened contact of described electromagnet and single-pole double-throw switch (SPDT) is connected with the power supply of electronic equipment, the normally-closed contact of single-pole double-throw switch (SPDT) is connected with the back-up source module, and the hilted broadsword of single-pole double-throw switch (SPDT) is connected with the power connection end of radiating control circuit.
9, electronic equipment according to claim 1 is characterized in that, described radiating control circuit is a fan control circuitry.
According to claim 1 or 9 described electronic equipments, it is characterized in that 10, described electronic equipment is projector, high power switching power supply or high-power wireless electricity transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520005869 CN2772191Y (en) | 2005-03-11 | 2005-03-11 | Electronic device with radiating control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520005869 CN2772191Y (en) | 2005-03-11 | 2005-03-11 | Electronic device with radiating control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2772191Y true CN2772191Y (en) | 2006-04-12 |
Family
ID=36705973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520005869 Expired - Fee Related CN2772191Y (en) | 2005-03-11 | 2005-03-11 | Electronic device with radiating control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2772191Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964540A (en) * | 2009-07-22 | 2011-02-02 | 鸿富锦精密工业（深圳）有限公司 | Redundant power supply system |
| CN102052340A (en) * | 2009-10-28 | 2011-05-11 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN109041544A (en) * | 2018-09-06 | 2018-12-18 | 天津七二通信广播股份有限公司 | A kind of radiator fan unit and implementation method for locomotive wireless communication equipment |
| CN109510959A (en) * | 2018-10-29 | 2019-03-22 | 深圳康佳电子科技有限公司 | A kind of control method and control system for preventing laser television from overheating |
-
2005
- 2005-03-11 CN CN 200520005869 patent/CN2772191Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964540A (en) * | 2009-07-22 | 2011-02-02 | 鸿富锦精密工业（深圳）有限公司 | Redundant power supply system |
| CN101964540B (en) * | 2009-07-22 | 2014-01-22 | 鸿富锦精密工业（深圳）有限公司 | Redundant power supply system |
| CN102052340A (en) * | 2009-10-28 | 2011-05-11 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN109041544A (en) * | 2018-09-06 | 2018-12-18 | 天津七二通信广播股份有限公司 | A kind of radiator fan unit and implementation method for locomotive wireless communication equipment |
| CN109510959A (en) * | 2018-10-29 | 2019-03-22 | 深圳康佳电子科技有限公司 | A kind of control method and control system for preventing laser television from overheating |
| CN109510959B (en) * | 2018-10-29 | 2021-06-01 | 深圳康佳电子科技有限公司 | Control method and control system for preventing laser television from overheating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |