CN100388335C - Fan control device for plasma module - Google Patents
Fan control device for plasma module Download PDFInfo
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- CN100388335C CN100388335C CNB2004100506221A CN200410050622A CN100388335C CN 100388335 C CN100388335 C CN 100388335C CN B2004100506221 A CNB2004100506221 A CN B2004100506221A CN 200410050622 A CN200410050622 A CN 200410050622A CN 100388335 C CN100388335 C CN 100388335C
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Abstract
The present invention relates to a fan control device for a plasma module, which is composed of the following parts of a fan for cooling the plasma module, a fan control part, driving plates X, Y and Z, an intelligent power module, a time sequence video-scanning plate, a control plate, an overheat judgment part and a micro-computer, wherein the fan control part drives the fan at a first and a second rotary speeds according to control signals; electrodes X, Y and Z are driven by the driving plates X, Y and Z; a power source provided by each Y electrode is controlled by the intelligent power module by the Y driving plate; the time sequence video-scanning plate is generated according to a control program and is used for controlling addressing and scanning time; the supplying power time of the power sources of the driving plates X, Y and Z is controlled by the control plate according to the time sequence transmitted by the video-scanning plate; the condition of heat of the intelligent power module is judged by the overheat judgment part according to control signals outputted by the control plate to the Y driving plate; the micro-computer controls the generating process of the time sequence of the video-scanning plate, and outputs the control signals to the fan control part according to the judgment result of the overheat judgment part. The present invention has the advantage of preventing the intelligent power device from being damaged, and enhances the performance of the plasma module.
Description
Technical field
The present invention relates to a kind of fan control device of plasma module, whether overheated especially relate to a kind of intelligent power module by identification intelligent type supply unit, and move the fan control device of the plasma module of fan according to the result who judges.
Background technology
Plasma display panel is to form Y electrode and Z electrode on the same plane of prebasal plate, form the X electrode at an upper portion thereof on the substrate back of structure, crosstalk for preventing the photoelectricity between the discharge cells adjacent between the X electrode, be formed with barrier, the following square structure that is formed with fluorescence coating around barrier and X electrode constitutes; Between structure and the following square structure, enclose inert gas up, make it form region of discharge.Then,, then between X electrode and Y electrode, cause opposed facing discharge, generate the wall electric charge as between X electrode and Y electrode, adding driving voltage; As the opposite sparking voltage of added polarity constantly on Y electrode and Z electrode, and remove to cut off the driving voltage that is applied on the X electrode, so by the wall electric charge, again because of keeping certain potential difference (PD) between Y electrode and the Z electrode, will cause the face discharge, ultraviolet ray will take place in its result from the inert gas of region of discharge.This ultraviolet ray forms colored the demonstration with the activating fluorescent layer by luminous fluorescence coating.
The plasma module is exactly at the back side of above-mentioned plasma display panel, and the various circuit formations that are used for driving plasma display panel are housed.
That is to say, as shown in Figure 1, be by plasma display panel 10 and at the back side of plasma display panel 10 various circuit be installed and constituted that various circuit are to be made of following several sections: be provided with the fan 11 that is used for cooling off the plasma module; Be provided with fan control portion 12, the environment temperature that will measure according to temperature sensor 13 is come drive fan with first rotating speed or second rotating speed; Be provided with power supply unit 14, be used for providing power supply to the various piece of plasma module; Be provided with the X drive plate, be used for driving X electrode (diagram is omitted); Be provided with Y drive plate 18, be used for driving the Y electrode of plasma module; Be provided with the Z drive plate, be used for driving the Z electrode (diagram is omitted) of plasma module; Be provided with intelligent electric source module 19, it is made of the on-off element of transistor etc., and it will utilize the power supply that is provided by power supply unit 14 to make Y drive plate 18 come the power supply power supply of each electrode of ON/OFF; Be provided with videoscanning plate 15, it will generate the time series that is used for controlling addressing and sweep time according to control program, so that (R, G, the B) picture signal that receives from the outside can be synchronous with synchronizing signal, and can show by plasma display panel; Be provided with microcomputer 16, be used for the time series generative process of control of video scanning board 15; Be provided with control panel 17,, control X drive plate (diagram is omitted), Y drive plate 18, and the power supply power-on time of Z drive plate (diagram is omitted) according to the time series that transmits by videoscanning plate 15.
At this moment, in the explanation of conventional art structure, omit the diagram of X drive plate and Z drive plate, correspondingly omitted the control line that is connected to X drive plate and Z drive plate from control panel 17 therewith.
Below, the course of work of the plasma module with said structure is described.
At first, illustrate the plasma module that is applicable on the TV, just plasm TV.
Select the channel stipulated as the user, in television module, receive the broadcast singal of corresponding channel, and in the plasma module, picture signal is wherein handled, so that make it, and be sent to the videoscanning plate 15 of plasma module with level and vertical synchronizing signal in the enterprising line output of picture.
At this moment, the acoustic signal in the broadcast singal is exported after obtaining handling in television module, therefore will omit the detailed description to it.
Then, videoscanning plate 15 will be according to control program rise time sequence so that picture signal that provides from television module and synchronizing signal synchronously after, can on the picture of plasma panel, show, and the time series that generates is sent to control panel 17; Meanwhile power supply unit 14, will provide driving power to various piece.
Then, control panel 17 will be controlled the power supply power-on time of X drive plate, the power supply power-on time of Y drive plate 18, and the power supply power-on time of Z drive plate according to time series.
Then, the X drive plate, Y drive plate 18, and Z drive plate will utilize the driving power that provides from power supply unit 14 according to the time control of control panel, generate the driving pulse that meets view data, and it is outputed on the relevant electrode of plasma display panel.So along with the electrode of plasma display panel obtains driving, with the generating plane discharge, fluorescence coating is luminous, thus display frame.
In addition, the following describes the course of work of fan in the plasma module.
At this moment, when contrast and brightness were 10-30%, especially 20% o'clock, the number of keeping was maximum, and machining area is little, the guiding discharge increased frequency.
That is to say that control panel 17 is exported the signal that drives all Y electrodes to Y drive plate 18, for instance, 8 all bits (2
8=256) signal wire will be to Y drive plate 18 output signals " 1 ".
So the transistorized switch increased frequency of intelligent power module (IPM) 19 causes intelligent power module 19 overheated.
But as mentioned above, fan just moves by the temperature around the fan control portion, and irrelevant with intelligent power module 19; Thereby intelligent power module 19 is when overheated, and the temperature around the fan control portion 12 is so not high, and fan 11 will be with slow running, thereby reduces the reliability of intelligent power module, when continuing superheat state, exists the danger that burns out.
Summary of the invention
The present invention develops for solving above-mentioned traditional problem.The object of the present invention is to provide a kind of fan control device of plasma module, it will go the intelligent power module of identification intelligent type supply unit whether overheated, and move fan according to the result who judges, so that can protect the intelligent power module from overheated.
Plasma mode fan control device of the present invention is made of following part: the fan that is provided with cooling plasma module; Be provided with the fan control portion that comes drive fan according to control signal with the 1st and the 2nd rotating speed; Be provided with the power supply unit that power supply is provided to the various piece of plasma module; Be provided with the X drive plate (diagram is omitted) that drives the X electrode; Be provided with the Y drive plate that drives the Y electrode; Be provided with the Z drive plate (diagram is omitted) that drives the Z electrode; Be provided with the intelligent power module of intelligent electric source apparatus, it is made of on-off elements such as transistors, the power supply that it will utilize power supply unit to provide, the power supply that Y drive plate ON/OFF is provided to each Y electrode; Be provided with the videoscanning plate, it will generate the time series that is used for controlling addressing and sweep time according to control program, so that red, green, blue (R, G, the B) picture signal that receives from the outside can be synchronous with synchronizing signal, and can show by plasma display panel; Be provided with control panel, according to the time series that transmits by the videoscanning plate, control X drive plate (diagram is omitted), Y drive plate, and the power supply power-on time of Z drive plate (diagram is omitted); Be provided with overheated judging part,, judge the whether overheated of intelligent power module according to the control signal of control panel to the output of Y drive plate; Be provided with microcomputer, the time series generative process of control of video scanning board, and according to overheated judgment result to fan control part output control signal.
Described overheated judging part, according to the control signal of control panel to the output of Y drive plate, judge that the whether overheated of intelligent power module is to receive from the control signal of control panel to the output of Y drive plate, and it carried out after the logical multiply, its result is outputed to microcomputer with door.
In the explanation of structure of the present invention, omit the diagram of X drive plate and Z drive plate, correspondingly omitted the control line that is connected to X drive plate and Z drive plate from control panel therewith.
Advantage of the present invention and effect are as follows:
The fan control device of plasma module of the present invention will run at high speed fan, thereby can prevent superheating phenomenon according to judging the overheated condition that in fact overheated intelligent electric source apparatus might take place.Therefore can prevent the phenomenon that the intelligent electric source apparatus reliability decrease occurs and causes damaging, have the effect of the performance that improves the plasma module.
Description of drawings
Fig. 1 is the structured flowchart of the plasma module of conventional art.
Fig. 2 is the structured flowchart of plasma module of the present invention.
Fig. 3 is the structural representation of the overheated judging part of Fig. 2.
The symbol description of accompanying drawing major part:
11: fan 13: temperature sensor
14: power supply unit 15: videoscanning plate (VSC)
17: control panel 18:Y drive plate
19: intelligent power module (IPM) 21: overheated judging part
22: microcomputer 23: fan control portion
Embodiment
Below, the basic functional principle of overheated judging part 21 of the present invention is described.
As mentioned above, the contrast of plasma display panel and brightness value, promptly at least one is about at 20% o'clock in contrast and the brightness, and the number of keeping is maximum, and machining area is little, and its guiding discharge increased frequency as a result, the intelligent power module is overheated.
At this moment, have one in contrast and the brightness at least and be about at 20% o'clock, control panel 17 that is to say 8 bits (2 that output is all to the signal of Y drive plate 18 all Y electrodes of output driving
8=256) signal wire is the signal of " 1 ".
So, as from control panel 17 when the control signal of the efferent of Y drive plate 18 output be " 1 ", just can be used as the overheated benchmark of judgement intelligent power module 19, so utilize it to constitute overheated judging part 21.
Utilize above-mentioned principle, as shown in Figure 3, provide by the overheated judging part 21 that constitutes with door; The overheated judging part of this structure, only whole (for example to the control signal of Y drive plate output from control panel 17,8 bits) obtain receiving, and all signals of 8 bits are just exported " 1 (high level) " signals to microcomputer 22 when be " 1 (high level) ".
Below, detailed description is had the course of work of the plasma mode fan control device of the present invention of this structure.
At first, normally carrying out under the state that picture shows, overheated judging part 21 with door, export 8 bit signals with receiving the control that is sent to Y drive plate 18 from control panel 17.
Then, control in 8 bit signals of output to Y drive plate 18 with Men Zaicong control panel 17, as long as there is one not to be " 1 ", so will be to microcomputer 22 output low levels " 0 ".
So, microcomputer 22 will be according to " 0 " from judging part 21 outputs, and it is not overheated to identify intelligent power module 19, so to the control signal that 23 one of the output of fan control part allow fan 11 drive with the 1st rotating speed (low speed), fan control portion 23 is with driven at low speed fan 11 for this reason.
In addition, all be " 1 " if control 8 bit signals of exporting to Y drive plate 18 with Men Zaicong control panel 17, so will be to microcomputer 22 output high level " 1 ".
So, microcomputer 22, will be according to high level " 1 " from judging part 21 outputs, it is overheated to identify intelligent power module 19, so to the control signal that 23 one of the output of fan control part allow fan 11 drive with the 2nd rotating speed (at a high speed), fan control portion 23 is with high-speed driving fan 11 for this reason.
Claims (2)
1. a plasma mode fan control device is characterized in that being made of following part: the fan that is provided with cooling plasma module; Be provided with the fan control portion that comes drive fan according to control signal with the 1st and the 2nd rotating speed; Be provided with the addressing electrode drive plate that drives addressing electrode; Be provided with the scan electrode drive plate of driven sweep electrode; Be provided with drive keep electrode keep the electrode drive plate; Be provided with the intelligent power module, the power supply that provides to each scan electrode by scan electrode drive plate ON/OFF; Be provided with the videoscanning plate,,, and can show by plasma display panel so that the red, green, blue picture signal that receives from the outside can be synchronous with synchronizing signal with generating the time series of controlling addressing and sweep time according to control program; Be provided with control panel, according to the time series that transmits by the videoscanning plate, control addressing electrode drive plate, scan electrode drive plate, and the power supply power-on time of keeping the electrode drive plate; Be provided with overheated judging part,, judge the whether overheated of intelligent power module according to the control signal of control panel to the output of scan electrode drive plate; Be provided with microcomputer, the time series generative process of control of video scanning board, and according to overheated judgment result to fan control part output control signal.
2. according to the described plasma mode fan control device of claim 1, it is characterized in that described overheated judging part comprises and door, with door be according to the control signal of control panel to scan electrode drive plate output, judge the whether overheated of intelligent power module, be to receive from the control signal of control panel to the output of scan electrode drive plate, and everybody numerical value of this control signal carried out after the logical multiply, the result of logical multiply is outputed to microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100506221A CN100388335C (en) | 2004-10-20 | 2004-10-20 | Fan control device for plasma module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100506221A CN100388335C (en) | 2004-10-20 | 2004-10-20 | Fan control device for plasma module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1763809A CN1763809A (en) | 2006-04-26 |
| CN100388335C true CN100388335C (en) | 2008-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100506221A Expired - Fee Related CN100388335C (en) | 2004-10-20 | 2004-10-20 | Fan control device for plasma module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100388335C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09297559A (en) * | 1996-05-09 | 1997-11-18 | Fujitsu General Ltd | Plasma display system |
| JPH1195674A (en) * | 1997-09-19 | 1999-04-09 | Fujitsu General Ltd | Pdp display device |
| JPH11344954A (en) * | 1998-06-03 | 1999-12-14 | Mitsubishi Electric Corp | Plasma display device |
| JP2001227494A (en) * | 2000-02-18 | 2001-08-24 | Fujitsu General Ltd | Radiation fan device for pdp |
-
2004
- 2004-10-20 CN CNB2004100506221A patent/CN100388335C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09297559A (en) * | 1996-05-09 | 1997-11-18 | Fujitsu General Ltd | Plasma display system |
| JPH1195674A (en) * | 1997-09-19 | 1999-04-09 | Fujitsu General Ltd | Pdp display device |
| JPH11344954A (en) * | 1998-06-03 | 1999-12-14 | Mitsubishi Electric Corp | Plasma display device |
| JP2001227494A (en) * | 2000-02-18 | 2001-08-24 | Fujitsu General Ltd | Radiation fan device for pdp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1763809A (en) | 2006-04-26 |
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| C06 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: LG ELECTRONICS (NANJING) PLASMA CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS (SHENYANG) CO., LTD. Effective date: 20070316 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070316 Address after: 210046 Hengtong Datong 77, Nanjing economic and Technological Development Zone, Jiangsu Applicant after: LG Electronics (Nanjing) Plasma Co., Ltd. Address before: 110179 No. 3540 hi tech Development Zone, Liaoning, Shenyang Applicant before: LG Electronic (Shenyang) Co., Ltd. |
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| 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 |