CN2531600Y - Intelligent control bias light for TV set - Google Patents
Intelligent control bias light for TV set Download PDFInfo
- Publication number
- CN2531600Y CN2531600Y CN 02212497 CN02212497U CN2531600Y CN 2531600 Y CN2531600 Y CN 2531600Y CN 02212497 CN02212497 CN 02212497 CN 02212497 U CN02212497 U CN 02212497U CN 2531600 Y CN2531600 Y CN 2531600Y
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- CN
- China
- Prior art keywords
- circuit
- lamp
- triode thyristor
- bidirectional triode
- intelligent control
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- Expired - Fee Related
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 23
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 14
- AEEAZFQPYUMBPY-UHFFFAOYSA-N [I].[W] Chemical compound [I].[W] AEEAZFQPYUMBPY-UHFFFAOYSA-N 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 11
- 230000004438 eyesight Effects 0.000 abstract description 7
- 239000007858 starting material Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses an intelligent control background light for a television, belonging to the technique field of TV set, comprising a light-emitting device and a control circuit thereof. The control circuit comprises a photoresistance photographic circuit, a resistance-voltage converting circuit, a voltage stabilizing circuit, an amplifying circuit, the central processing unit of a television, an impedance matcher, a photoelectric isolator, a bidirectional triode thyristor AC voltage regulator, and a series circuit of an AC power supply and the light-emitting device. The resistance-voltage converting circuit, the amplifying circuit, and the impedance matcher are made up of a plurality of operational amplifiers respectively. The photoelectric isolator comprises a plurality of photo couplers. The light-emitting device can be one of the devices such as an incandescent lamp, a fluorescent lamp, a tungsten lamp, and etc. The bidirectional triode thyristor AC voltage regulator comprises a starter gear and a bidirectional triode thyristor. The brightness of the background light can be self-regulated by the TV set or be regulated at will through a remote controller according to the brightness of the environment light. Therefore, a televiewer can get an ideal screen image, and the vision of the televiewer can be protected well. The utility model can be used in TV sets extensively.
Description
Technical field
The utility model belongs to technical field of television sets, a kind of intelligent control background lamp of TV set that relates to the attached equipment of television set of more clearly saying so.
Background technology
Present most television sets environmental background light residing with it there is no to be contacted directly.No matter that is to say, be daytime or night, and the people who televiews regulates the brightness or the contrast of television set at the most, make its light that conforms power, improve screen picture.The result is often: by force dazzle the eyes because of light daytime, and night is more weak and dazzling because of light.In the course of time, easily cause visual fatigue and eyesight to descend.
The patent No. is 90218326.5 " television lighting health care lamp " provides a kind of adjustable direction for observer a background light.But it and television set are separate, need to regulate separately operation inconvenience.The patent No. is that 00237567.2 " a kind of television set light emitting shell " provides a kind of television set of sending out bias light, and ray structure is installed on the housing of TV set.The patent No. is that 95250587.8 " TV assist illuminator " provides a kind of assist illuminator that is installed on the housing of TV set, can with the television set close synchronously.But they all can not the regulated at will lamp brightness, more can not regulate the brightness of lamp or the contrast of television set automatically, observer is in the desirable light background all the time.Do not reach and both can make observer watch desirable screen picture, can protect the purpose of their eyesight again.
The purpose of this utility model is to overcome above-mentioned shortcoming and defect, provides a kind of and can be regulated the brightness of lamp automatically by television set according to the brightness of surrounding environment light; Or with the brightness of the remote controller regulated at will lamp of television set; Observer is in the desirable light background all the time, reaches and both can make observer watch desirable screen picture, can protect the intelligent control background lamp of TV set of their eyesight again.
Summary of the invention
In order to achieve the above object, the utility model is made of luminescent device and control circuit thereof.Control circuit is by the photo resistance photosensitive circuit, resistance/the voltage conversion circuit that is connected with the photo resistance photosensitive circuit, voltage stabilizing circuit that is connected with resistance/voltage conversion circuit and amplifying circuit, the central processing unit of the television set that is connected with amplifying circuit, the impedance matching box that is connected with the output of central processing unit, the photoisolator that is connected with impedance matching box, the bidirectional triode thyristor AC voltage regulator that is connected with photoisolator and the AC power and the luminescent device series circuit that are connected with the output of bidirectional triode thyristor AC voltage regulator constitute.Resistance/voltage conversion circuit, amplifying circuit and impedance matching box are formed by operational amplifier.Operational amplifier is simple and reasonable, and is cheap, and function is comparatively desirable.Photoisolator is made up of photoelectrical coupler.Luminescent device can be a kind of of luminescent devices such as incandescent lamp, fluorescent lamp, iodine-tungsten lamp.
The utility model adopts photo resistance as sensor devices, and the environmental light brightness that photo resistance is recorded by peripheral circuit is transferred to the central processing unit of television set, and by the central processing unit image data.Because the signal of telecommunication that photo resistance is exported is very weak, and is not voltage signal, can not satisfy the reference voltage detection of central processing unit, so will handle by corresponding change-over circuit and amplifying circuit.This circuit adopts an operational amplifier as resistance/voltage conversion circuit, and another operational amplifier is demarcated amplification, makes its output voltage satisfy the detection requirement of central processing unit.
Because the control signal of central processing unit output is the voltage signal of a 0～5V, impossible directly driven for emitting lights device is so need carry out electrical isolation and power amplification.The present invention adopts photoisolator to carry out the isolation in control loop and forceful electric power loop, uses bidirectional triode thyristor as power controller spare.Another operational amplifier mainly plays the impedance matching effect.
Luminescent device is to carry out work under the control of central processing unit.From flow chart as seen, the software of central processing unit is being born functions such as data acquisition, data analysis, the control of luminescent device switch, remote control control, brightness regulation.
The bidirectional triode thyristor AC voltage regulator is made up of isolator and bidirectional triode thyristor.The bidirectional triode thyristor AC voltage regulator is unidirectional voltage by isolator with AC voltage conversion, by bidirectional triode thyristor its positive and negative half-wave is cut control again, realizes AC voltage adjusting.Realize voltage-control dimming thus to luminescent device.Isolator is a bridge rectifier.
Luminescent device only secretly just begins to work to a certain degree the time at surround lighting.When surround lighting was very strong, central processing unit can be by the data of coming from the photo resistance collection, and brightness, the contrast of regulating television set automatically are in the desirable luminous environment observer all the time.
By the central processing unit of television set, the brightness of available remote controller regulated at will luminescent device.During the television set shutdown, also available remote controller uses luminescent device as remote controlled lantern, and its adjustable brightness.
Task of the present utility model comes to this and finishes.
The utility model can be according to the brightness of surrounding environment light, regulates the brightness of lamp automatically or with the brightness of remote controller regulated at will lamp by television set.Both can make observer watch desirable screen picture, can protect their eyesight again.It can be widely used in the television set.
Description of drawings
Fig. 1 is a control circuit schematic diagram of the present utility model.
Fig. 2 is a software program flow chart of the present utility model.
Shown in Figure 1, the utility model is made of luminescent device 1 and control circuit thereof.Control circuit is made of central processing unit 6, impedance matching box 7, photoisolator 8, bidirectional triode thyristor AC voltage regulator 9 and AC power 12 and luminescent device 1 series circuit of photo resistance photosensitive circuit 2, resistance/voltage conversion circuit 3, voltage stabilizing circuit 4 and amplifying circuit 5, television set.Resistance/voltage conversion circuit 3, amplifying circuit 5 and impedance matching box 7 are formed by operational amplifier.Photoisolator 8 is made up of photoelectrical coupler.Luminescent device 1 can be a kind of of luminescent devices such as incandescent lamp, fluorescent lamp, iodine-tungsten lamp.Bidirectional triode thyristor AC voltage regulator 9 is made up of isolator 10 and bidirectional triode thyristor 11.It can be according to the brightness of surrounding environment light, regulates the brightness of lamp automatically or with the brightness of remote controller regulated at will lamp by the central processing unit tool of television set.
Fig. 2 shows program circuit of the present utility model.
Embodiment
Specific embodiment of the utility model is as follows:
1. 1 kinds of intelligent control background lamp of TV set of embodiment, as shown in Figure 1.It is made of luminescent device incandescent lamp and control circuit thereof.Control circuit is made of central processing unit, impedance matching box, photoisolator, bidirectional triode thyristor AC voltage regulator and AC power and the luminescent device series circuit of photo resistance photosensitive circuit, resistance/voltage conversion circuit, voltage stabilizing circuit and amplifying circuit, television set.Resistance/voltage conversion circuit, amplifying circuit and impedance matching box are formed by operational amplifier A MP1.Photoisolator is made up of photoelectrical coupler OPTOISO1.Luminescent device is an incandescent lamp.The bidirectional triode thyristor AC voltage regulator is made up of isolator and bidirectional triode thyristor TRIAC.It can be according to the brightness of surrounding environment light, regulates the brightness of lamp automatically or with the brightness of remote controller regulated at will lamp by television set.Both can make observer watch desirable screen picture, can protect their eyesight again.It can be widely used in the television set.
2. 1 kinds of intelligent control background lamp of TV set of embodiment, as shown in Figure 1.It is made of luminescent device fluorescent lamp and control circuit thereof.Control circuit is made of central processing unit, impedance matching box, photoisolator, bidirectional triode thyristor AC voltage regulator and AC power and the luminescent device series circuit of photo resistance photosensitive circuit, resistance/voltage conversion circuit, voltage stabilizing circuit and amplifying circuit, television set.Resistance/voltage conversion circuit, amplifying circuit and impedance matching box are formed by operational amplifier A MP1.Photoisolator is made up of photoelectrical coupler OPTOISO1.Luminescent device is a fluorescent lamp.The bidirectional triode thyristor AC voltage regulator is made up of isolator and bidirectional triode thyristor TRIAC.It can be according to the brightness of surrounding environment light, regulates the brightness of lamp automatically or with the brightness of remote controller regulated at will lamp by television set.Both can make observer watch desirable screen picture, can protect their eyesight again.It can be widely used in the television set.
Claims (7)
1. intelligent control background lamp of TV set, it is made of luminescent device and control circuit thereof, it is characterized in that said control circuit is by the photo resistance photosensitive circuit, resistance/the voltage conversion circuit that is connected with the photo resistance photosensitive circuit, voltage stabilizing circuit that is connected with resistance/voltage conversion circuit and amplifying circuit, the central processing unit of the television set that is connected with amplifying circuit, the impedance matching box that is connected with the output of central processing unit, the photoisolator that is connected with impedance matching box, the bidirectional triode thyristor AC voltage regulator that is connected with photoisolator and the AC power and the luminescent device series circuit that are connected with the output of bidirectional triode thyristor AC voltage regulator constitute.
2. according to the described intelligent control background lamp of TV set of claim 1, it is characterized in that said resistance/voltage conversion circuit, amplifying circuit and impedance matching box form by operational amplifier.
3. according to claim 1 or 2 described intelligent control background lamp of TV set, it is characterized in that said photoisolator is made up of photoelectrical coupler.
4. according to the described intelligent control background lamp of TV set of each claim in the claim 1～3, it is characterized in that said luminescent device can be a kind of of luminescent devices such as incandescent lamp, fluorescent lamp, iodine-tungsten lamp.
5. according to the described intelligent control background lamp of TV set of each claim in the claim 1～4, it is characterized in that said bidirectional triode thyristor AC voltage regulator is made up of isolator and bidirectional triode thyristor.
6. according to the described intelligent control background lamp of TV set of claim 1, the brightness that it is characterized in that said lamp can automatically adjust according to the variation of ambient light or carry out switch automatically.
7. according to the described intelligent control background lamp of TV set of claim 1, it is characterized in that it can control its switch by this control key of remote controller or television set, and under the television set holding state, can regulate its brightness by this control key of remote controller or television set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212497 CN2531600Y (en) | 2002-01-27 | 2002-01-27 | Intelligent control bias light for TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212497 CN2531600Y (en) | 2002-01-27 | 2002-01-27 | Intelligent control bias light for TV set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2531600Y true CN2531600Y (en) | 2003-01-15 |
Family
ID=33692165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212497 Expired - Fee Related CN2531600Y (en) | 2002-01-27 | 2002-01-27 | Intelligent control bias light for TV set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2531600Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341383C (en) * | 2002-01-27 | 2007-10-03 | 海尔集团公司 | Intelligent control background lamp of TV set |
| CN109785596A (en) * | 2019-03-28 | 2019-05-21 | 广东交通职业技术学院 | A kind of vision protection device |
-
2002
- 2002-01-27 CN CN 02212497 patent/CN2531600Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341383C (en) * | 2002-01-27 | 2007-10-03 | 海尔集团公司 | Intelligent control background lamp of TV set |
| CN109785596A (en) * | 2019-03-28 | 2019-05-21 | 广东交通职业技术学院 | A kind of vision protection device |
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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 |