CN110534055A - Display panel of air-conditioner and air conditioner - Google Patents
Display panel of air-conditioner and air conditioner Download PDFInfo
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- CN110534055A CN110534055A CN201910822299.1A CN201910822299A CN110534055A CN 110534055 A CN110534055 A CN 110534055A CN 201910822299 A CN201910822299 A CN 201910822299A CN 110534055 A CN110534055 A CN 110534055A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention discloses a kind of display panel of air-conditioner and air conditioner, wherein, display panel of air-conditioner includes display module and display control board, display control board is equipped with DC power supply terminal, control circuit, power circuit and luminance detection circuit, luminance detection circuit is for detecting ambient brightness, when ambient brightness is less than or equal to predetermined luminance lower limit value, control circuit determines that current environment is dark surrounds, and the minimum value control display module in the operating voltage section of controlling power circuit output display module is shown, so that display module shows minimum brightness, glimmer state is presented, when ambient brightness is more than or equal to predetermined luminance upper limit value, control circuit determines that current environment is bright light environments, the Maximum constraint display module in the operating voltage section of controlling power circuit output display module is shown, so that display module is shown in maximum brightness , to solve the problems, such as that user can not learn the working condition of air-conditioning in the case where current environment is dark surrounds.
Description
Technical field
The present invention relates to air conditioner technical field, in particular to a kind of display panel of air-conditioner and air conditioner.
Background technique
Air conditioner indoor unit display module has the function of night anti-dazzle, and MCU is detected after nighttime users indoor environment is turned off the light
Display module can be closed after to the change in resistance of photo resistance, prevents light pollution from influencing user's rest.
But display module display brightness is fixed, and is only switched two states, can not dynamically be adjusted according to environmental light brightness
The brightness of whole display module causes user that can not learn air-conditioning to can only close the display of air-conditioning under night dark surrounds
Working condition.
Summary of the invention
The main object of the present invention is to provide a kind of display panel of air-conditioner, it is intended to solve under night dark surrounds user without
Method learns the problem of working condition of air-conditioning.
To achieve the above object, display panel of air-conditioner proposed by the present invention includes:
Display module；
Display control board, the display control board are equipped with DC power supply terminal, control circuit, power circuit and brightness detection
Circuit, the DC power supply terminal, the power end of the control circuit, the power input of the power circuit and brightness inspection
The power end of slowdown monitoring circuit interconnects, and the controlled end of the power circuit is connect with the control terminal of the control circuit, the brightness inspection
The signal end of slowdown monitoring circuit is connect with the signal end of the control circuit；
The luminance detection circuit for detecting ambient brightness, and exports luminance detection signal to the control circuit；
The control circuit, for determining current when the ambient brightness is less than or equal to predetermined luminance lower limit value
Environment is dark surrounds, described in the minimum value control for controlling the operating voltage section that the power circuit exports the display module
Display module is shown；And
When the ambient brightness is more than or equal to predetermined luminance upper limit value, determine that current environment is bright light environments, control
Display module described in the Maximum constraint in the operating voltage section that the power circuit exports the display module is made to show.
In one embodiment, the control circuit is also used to be greater than predetermined luminance lower limit value and small in the ambient brightness
When predetermined luminance lower limit value, the power circuit is controlled according to luminance detection signal and is exported to the voltage of the display module,
The display brightness for controlling the display module follows the bright dark variation tendency of ambient brightness to carry out corresponding change, so that the display
The display brightness of mould group and the difference of ambient brightness are lower than predetermined luminance value.
In one embodiment, the display module includes multiple groups display unit, each display unit include switching circuit and
The power input of illuminator, each switching circuit is connect with the power output end of the power circuit respectively, Mei Yisuo
The controlled end for stating switching circuit is connect with the control terminal of the control circuit respectively, the power output end of the switching circuit and institute
State the power end connection of illuminator；
The switching circuit, the corresponding conducting of control signal or shutdown for being exported according to the control circuit, so that
The power circuit exports corresponding voltage to the illuminator；
The illuminator, the voltage correspondence for being exported according to the power circuit are lighted.
In one embodiment, the illuminator is light emitting diode.
In one embodiment, it includes first resistor, second resistance and switch that the switching circuit, which includes the switching circuit,
Pipe；
The power output end of the power input of the switching tube, the first end of the first resistor and the power circuit
Interconnection, the controlled end interconnection of the second end of the first resistor, the first end of the second resistance and the switching tube, described the
The second end of two resistance is the controlled end of the switching circuit.
In one embodiment, it includes 3rd resistor, the 4th electricity that the luminance detection circuit, which includes the luminance detection circuit,
Resistance, photo resistance and first capacitor；
The first end of the photo resistance, the first end of the 3rd resistor and DC power supply terminal interconnection, the light
The second end of quick resistance, the second end of the 3rd resistor, the first end of the 4th resistance and the first capacitor first
End interconnection, connecting node are the signal end of the luminance detection circuit, the second end of the 4th resistance and first electricity
The second end of appearance is grounded.
In one embodiment, the power circuit includes the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th
Resistance, the tenth resistance, the second capacitor, third capacitor, operational amplifier, the first inductance and power supply chip；
The first end of 5th resistance is the controlled end of the power circuit, the second end of the 5th resistance, described
The first end of 6th resistance and the inverting input terminal interconnection of the operational amplifier, second end, the fortune of the 6th resistance
Calculate the feedback pin connection of the output end and the power supply chip of amplifier, the power input of the power supply chip, described the
The first end of seven resistance and DC power supply terminal interconnection, second end, the first end of second capacitor of the 7th resistance
And the functional pin of the power supply chip interconnects, the second end of the ground terminal of the power supply chip and second capacitor connects
Ground, the first end interconnection of the output end of the power supply chip, the first end of the third capacitor and first inductance, described the
The second end of three capacitors is connect with the bootstrap voltage mode input terminal of the power supply chip, the second end of first inductance and described the
The first ends of eight resistance connects and connecting node is the power output end of the power circuit, the second end of the 8th resistance,
The first end of 9th resistance and the first end interconnection of the tenth resistance, the second end ground connection of the 9th resistance are described
The second end of tenth resistance is connect with the normal phase input end of the operational amplifier.
In one embodiment, the power circuit include the 4th capacitor, the 5th capacitor, first diode, the second inductance and
NMOS tube；
The drain electrode of the first end and the NMOS tube of 4th capacitor connects and connecting node is the power circuit
Power input, the grid of the NMOS tube are the controlled end of the power circuit, the source electrode of the NMOS tube, the described 1st
The first end of pole pipe and the interconnection of the first end of second inductance, the of the second end of second inductance and the 5th capacitor
One end connection, the second end of the 4th capacitor and the second end of the 5th capacitor are grounded.
In one embodiment, voltage sampling circuit, the letter of the voltage sampling circuit are additionally provided in the display driving plate
Number input terminal is connect with the output end of the power circuit, the signal output end of the voltage sampling circuit and the control circuit
Signal end connection；
The voltage sampling circuit is sampled for the output voltage to the power circuit, and output voltage samples
Signal is to the control circuit；
The control circuit is also used to control the power circuit constant current operation according to the voltage sampling signal.
The present invention also proposes a kind of air conditioner, which includes display panel of air-conditioner as described above.
Technical solution of the present invention forms display panel of air-conditioner, display control board by using display module and display control board
It is equipped with DC power supply terminal, control circuit, power circuit and luminance detection circuit, luminance detection circuit is bright for detecting environment
Degree, when ambient brightness is less than or equal to predetermined luminance lower limit value, control circuit determines that current environment is dark surrounds, and defeated
The minimum value for controlling the operating voltage section of signal control power supply circuit output display module out controls display module and shows, so that
Display module shows minimum brightness, and glimmer state is presented, when ambient brightness is more than or equal to predetermined luminance upper limit value, control
Circuit determines that current environment is bright light environments, the operating voltage section of output control signal control power supply circuit output display module
Maximum constraint display module show so that display module is shown in maximum brightness.So that it is black for solving in current environment
User can not learn the problem of working condition of air-conditioning under dark situation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the air condition of that present invention display board；
Fig. 2 is the module diagram of one embodiment of display module in the air condition of that present invention display board
Fig. 3 is the electrical block diagram of one embodiment of the air condition of that present invention control panel；
Fig. 4 is the electrical block diagram of another embodiment of the air condition of that present invention control panel.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the "and/or" occurred in full text contains
Justice are as follows: including three schemes arranged side by side, by taking " A/B " as an example, including the scheme that A scheme or B scheme or A and B meet simultaneously, separately
Outside, the technical solution between each embodiment can be combined with each other, can be real with those of ordinary skill in the art but must be
Based on existing, the combination of this technical solution will be understood that not when conflicting or cannot achieve when occurs in the combination of technical solution
In the presence of, also not the present invention claims protection scope within.
The present invention proposes a kind of display panel of air-conditioner.
As shown in FIG. 1, FIG. 1 is the structural schematic diagram of one embodiment of the air condition of that present invention display board, in the present embodiment, air-conditioning
Device display board includes:
Display module 200；
Display control board 100, display control board 100 are equipped with DC power supply terminal VCC, control circuit 20, power circuit 10
With luminance detection circuit 30, DC power supply terminal VCC, the power end of control circuit 20, the power input of power circuit 10 and bright
The power end interconnection of detection circuit 30 is spent, the controlled end of power circuit 10 is connect with the control terminal of control circuit 20, brightness detection
The signal end of circuit 30 is connect with the signal end of control circuit 20；
Luminance detection circuit 30 for detecting ambient brightness, and exports luminance detection signal to control circuit 20；
Control circuit 20, for determining that current environment is when ambient brightness is less than or equal to predetermined luminance lower limit value
Dark surrounds, the minimum value control display module 200 that controlling power circuit 10 exports the operating voltage section of display module 200 are aobvious
Show；And
When ambient brightness is more than or equal to predetermined luminance upper limit value, determine that current environment is bright light environments, control electricity
The Maximum constraint display module 200 that source circuit 10 exports the operating voltage section of display module 200 is shown.
In the present embodiment, display module 200 is used to show the working condition of air conditioner, such as current refrigeration/heating temperature,
Wind-force, swing flap mode etc., such as display panel, display screen, charactron etc..
Luminance detection circuit 30 is arranged on display control board 100, and passes through photo resistance RT structure detection ambient brightness,
It converts optical signals to electric signal to export to control circuit 20,20 real-time reception luminance detection circuit 30 of control circuit is fed back bright
Degree detection signal, and corresponding control display module 200 correspondence is lighted.
Power circuit 10 is used for the DC voltage of the corresponding output different voltages grade of control signal according to control circuit 20,
So that display module 200 is lighted according to different grades of DC voltage, power circuit 10 can be switch power module, lifting
Volt circuit, power supply chip etc., are not particularly limited herein.
Wherein, the output voltage size of power circuit 10 is in operating voltage section, to drive 200 normal point of display module
It is bright, when outside the operating voltage section, display module 200 do not work, abnormal work or brightness excessively it is bright cause working condition without
Method checks that operating voltage interval range can carry out corresponding selection, such as 1.8V~5V according to the type of display module 200.
Control circuit 20 is used to receive luminance detection signal and correspondence outputs control signals to power circuit 10, with output pair
Answer voltage to display module 200, control circuit 20 can be controller, such as MCU, CPU or PLC controller etc., specific one
In embodiment, control circuit MCU, MCU work according to ambient brightness controlling power circuit 10, and it is right to control display module 200
It should light, to show the working condition of air conditioner, MCU can be the Master control chip of air conditioner, can also be independent display module
200 control chip, is configured with specific reference to demand, is not particularly limited.
When the luminance detection signal that control circuit 20 receives shows that current environment brightness is less than or equal to predetermined luminance
When lower limit value, determine that current environment is in dark surrounds, such as night situation, control circuit 20 outputs control signals to power supply electricity
Road 10, with the lower limit value of 10 output services voltage range of controlling power circuit, such as 1.8V, display module 200 is driven in the voltage
It is shown under dynamic with minimum brightness, therefore glimmer state, which is presented, when user's rest in the present context, can both view display mould
The working condition shown in group 200, while glimmer light not will cause dazzling effect sleep, to solve in night dark ring
User can not learn the problem of working condition of air-conditioning under border.
Simultaneously when current environment brightness is more than or equal to predetermined luminance upper limit value, show that current environment is bright ring
Border, such as daytime situation, control circuit 20 output control signals to power circuit 10, with controlling power circuit 10 output services electricity
Upper limit value between pressure area, such as 5V, display module 200 show under voltage driving with maximum brightness, here it is shown that under state,
User can view the working condition shown in display module 200, will not cause working condition that can not check because brightness is excessively bright.
When ambient brightness is between predetermined luminance lower limit value and upper limit value, the control of the exportable control signal of control circuit 20
Voltage value of the power circuit 10 to export a constant voltage values or ambient brightness is followed to change, such as power circuit 10 are constant defeated
3.3V is to display module 200 out, so that display module 200 is permanent bright, or the display brightness of control display module 200 follows environment
Brightness change, such as change in the section 1.8~5V, specific control mode is not limited, can be controlled according to actual needs.
Technical solution of the present invention forms display panel of air-conditioner, display by using display module 200 and display control board 100
Control panel 100 is equipped with DC power supply terminal VCC, control circuit 20, power circuit 10 and luminance detection circuit 30, brightness detection electricity
Road 30 is for detecting ambient brightness, and when the ambient brightness is less than or equal to predetermined luminance lower limit value, control circuit 20 is true
Determining current environment is dark surrounds, and exports the operating voltage area that control signal control power supply circuit 10 exports display module 200
Between minimum value control display module 200 show so that display module 200 show minimum brightness, present glimmer state, in environment
When brightness is more than or equal to predetermined luminance upper limit value, control circuit 20 determines that current environment is bright light environments, output control letter
The Maximum constraint display module 200 that number controlling power circuit 10 exports the operating voltage section of display module 200 shows, so that
Display module 200 is shown in maximum brightness, so that air-conditioning can not be learnt by solving the user in the case where current environment is dark surrounds
The problem of working condition.
In one embodiment, in order to reduce energy consumption and dazzle the eyes problem, control circuit 20 is also used to be greater than in ambient brightness pre-
If brightness lower limit and be less than predetermined luminance lower limit value when, according to luminance detection signal controlling power circuit 10 output to display mould
The voltage of group 200, the display brightness of control display module 200 follow the bright dark variation tendency of ambient brightness to carry out corresponding change,
So that the display brightness of display module 200 and the difference of ambient brightness are lower than predetermined luminance value.
In the present embodiment, in ambient brightness when predetermined luminance lower limit value to upper limit value changes, the output control of control circuit 20
Signal processed is to power circuit 10, so that the DC voltage of the output variation of power circuit 10 is to display module 200, and then controls display
The display brightness of mould group 200 follows the bright dark variation of ambient brightness and changes, when ambient brightness is got higher, display module 200
Brightness is accordingly got higher, and when ambient brightness is lower, the brightness of display module 200 is accordingly lower, and brightness and the ring of display module 200
The difference of border brightness is lower than predetermined luminance value, i.e., remains a constant difference between the brightness and ambient brightness of display module 200
Value, difference can be greater than zero, and perhaps less than zero, i.e. 200 brightness of display module can be consistently greater than or preset less than ambient brightness one bright
Angle value.
As shown in Fig. 2, Fig. 2 is the module diagram of 200 1 embodiment of display module in the air condition of that present invention display board, this
In embodiment, display module 200 includes multiple groups display unit, and each display unit includes switching circuit 210 and illuminator 220,
The power input of each switching circuit 210 is connect with the power output end of power circuit 10 respectively, each switching circuit 210
Controlled end is connect with the control terminal of control circuit 20 respectively, the power output end of switching circuit 210 and the power end of illuminator 220
Connection；
Switching circuit 210, the corresponding conducting of control signal or shutdown for being exported according to control circuit 20, so that power supply
Circuit 10 exports corresponding voltage to illuminator 220；
Illuminator 220, the voltage correspondence for being exported according to power circuit 10 are lighted.
In the present embodiment, illuminator 220 is arranged in the corresponding position of display module 200, for providing light source, illuminator
220 can be electroluminor, light emitting diode or other illuminators, in order to simplify display module structure, in a specific implementation
Example in, illuminator 220 be Light-emitting diode LED, Light-emitting diode LED form " 88 " structure to show current air conditioner temperature,
Or other working conditions, the power input of switching circuit 210 are connect with the output end of power circuit 10, and receive power supply electricity
The DC voltage that road 10 exports, control circuit 20 export the direct current of corresponding voltage grade according to ambient brightness controlling power circuit 10
Voltage, while the corresponding conducting of switching circuit 210 or shutdown are controlled according to the working condition of air conditioner is corresponding, so that different
Light-emitting diode LED is lighted or is turned off with different conditions, to show the different working condition of air conditioner.
Switching circuit 210 is the construction of switch with make-break capacity, can be switching tube, relay, switch chip etc., tool
Body is configured according to demand, in one embodiment, as shown in figure 3, Fig. 3 is the electricity of one embodiment of the air condition of that present invention control panel
Line structure schematic diagram, switching circuit 210 include first resistor R1, second resistance R2 and switching tube Q1；
The power output end of the power input of switching tube Q1, the first end of first resistor R1 and power circuit 10 interconnects,
The controlled end of the second end of first resistor R1, the first end of second resistance R2 and switching tube Q1 interconnects, and the second of second resistance R2
End is the controlled end of switching circuit, and switching tube Q1 can be triode, metal-oxide-semiconductor etc., and in the present embodiment, switching tube Q1 is PMOS tube,
Switching tube Q1 receives the corresponding conducting of control signal that control circuit 20 exports, and the direct voltage output that power circuit 10 is exported
To Light-emitting diode LED, Light-emitting diode LED correspondence is lighted.
Please continue to refer to Fig. 3, in the present embodiment, luminance detection circuit 30 includes that luminance detection circuit 30 includes 3rd resistor
R3, the 4th resistance R4, photo resistance RT and first capacitor C1；
The first end of photo resistance RT, the first end of 3rd resistor R3 and DC power supply terminal VCC interconnection, photo resistance RT's
Second end, the second end of 3rd resistor R3, the interconnection of the first end of the first end of the 4th resistance R4 and first capacitor C1, connection section
Point is the signal end of luminance detection circuit 30, and the second end of the 4th resistance R4 and the second end of first capacitor C1 are grounded.
In the present embodiment, when ambient brightness changes, its own resistance value changes photo resistance RT, and output is extremely
The voltage signal of control circuit 20 is corresponding to be changed, to feed back current environment brightness out.
Please continue to refer to Fig. 3, in the present embodiment, power circuit 10 includes the 5th resistance R5, the 6th resistance R6, the 7th resistance
R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the second capacitor C2, third capacitor C3, operational amplifier IC1, first
Inductance L1 and power supply chip U2；
The first end of 5th resistance R5 is the controlled end of power circuit 10, the second end of the 5th resistance R5, the 6th resistance R6
First end and operational amplifier IC1 inverting input terminal interconnection, the second end of the 6th resistance R6, operational amplifier IC1 it is defeated
Outlet and the connection of the feedback pin of power supply chip U2, the power input of power supply chip U2, the first end of the 7th resistance R7 and straight
Galvanic electricity source VCC interconnection, the functional pin of the second end of the 7th resistance R7, the first end of the second capacitor C2 and power supply chip U2 are mutual
Even, the second end of the ground terminal of power supply chip U2 and the second capacitor C2 are grounded, output end, the third capacitor C3 of power supply chip U2
First end and the first inductance L1 first end interconnection, the bootstrap voltage mode of the second end of third capacitor C3 and power supply chip U2 inputs
End connection, the second end of the first inductance L1 is connect with the first end of the 8th resistance R8 and connecting node is the power supply of power circuit 10
Output end, the first end interconnection of the second end of the 8th resistance R8, the first end of the 9th resistance R9 and the tenth resistance R10, the 9th electricity
The second end ground connection of R9 is hindered, the second end of the tenth resistance R10 is connect with the normal phase input end of operational amplifier IC1.
In the present embodiment, control circuit 20 is corresponding to export different voltage signals to fortune when obtaining current environment brightness
The inverting input terminal of amplifier IC1 is calculated, to provide different reference voltage values, power supply chip U2 is corresponding according to different reference voltage values
Output voltage is adjusted, so that power circuit 10 exports the DC voltage of different voltages grade, the model of power supply chip U2 can
Be it is a variety of, be not particularly limited.
As shown in figure 4, in another embodiment, power circuit 10 includes the 4th capacitor C4, the 5th capacitor C5, the one or two pole
Pipe, the second inductance L2 and NMOS tube Q2；
Drain electrode connection and connecting node of the first end of 4th capacitor C4 with NMOS tube Q2 are that the power supply of power circuit 10 is defeated
Enter end, the grid of NMOS tube Q2 is the controlled end of power circuit 10, the source electrode of NMOS tube Q2, the first end of first diode and the
The first end of two inductance L2 interconnects, and the second end of the second inductance L2 is connect with the first end of the 5th capacitor C5, the 4th capacitor C4's
Second end and the second end of the 5th capacitor C5 are grounded.
In the present embodiment, power circuit 10 uses BUCK circuit, and control circuit 20 changes according to luminance detection signal is corresponding
The duty ratio of BUCK circuit, so that power circuit 10 exports the DC voltage of different voltages grade.
In order to improve the driving stability of display module 200, in one embodiment, show that being additionally provided with voltage in driving plate adopts
Sample circuit (not shown go out), the signal input part of voltage sampling circuit is connect with the output end of power circuit 10, and voltage sample is electric
The signal output end on road is connect with the signal end of control circuit 20；
Voltage sampling circuit is sampled for the output voltage to power circuit 10, and output voltage sampled signal is extremely
Control circuit 20；
Control circuit 20 is also used to according to 10 constant current operation of voltage sampling signal controlling power circuit.
In the present embodiment, the signal end of control circuit 20 also obtains the output voltage values of power circuit 10, and dynamic adjusts
The output voltage values of power circuit 10 improve driving stability to guarantee 200 constant current operation of display module.
The present invention also proposes a kind of air conditioner, which includes display panel of air-conditioner, the display panel of air-conditioner it is specific
Structure at least has referring to above-described embodiment since this air conditioner uses whole technical solutions of above-mentioned all embodiments
There are all beneficial effects brought by the technical solution of above-described embodiment, this is no longer going to repeat them.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of display panel of air-conditioner characterized by comprising
Display module；
Display control board, the display control board are equipped with DC power supply terminal, control circuit, power circuit and brightness detection electricity
Road, the DC power supply terminal, the power end of the control circuit, the power input of the power circuit and brightness detection
The power end of circuit interconnects, and the controlled end of the power circuit is connect with the control terminal of the control circuit, the brightness detection
The signal end of circuit is connect with the signal end of the control circuit；
The luminance detection circuit for detecting ambient brightness, and exports luminance detection signal to the control circuit；
The control circuit, for determining current environment when the ambient brightness is less than or equal to predetermined luminance lower limit value
For dark surrounds, the minimum value for controlling the operating voltage section that the power circuit exports the display module controls the display
Module displays；And
When the ambient brightness is more than or equal to predetermined luminance upper limit value, determines that current environment is bright light environments, control institute
Display module described in the Maximum constraint in the operating voltage section that power circuit exports the display module is stated to show.
2. display panel of air-conditioner as described in claim 1, which is characterized in that
The control circuit is also used to be greater than predetermined luminance lower limit value in the ambient brightness and is less than predetermined luminance lower limit value
When, the power circuit is controlled according to luminance detection signal and is exported to the voltage of the display module, the display module is controlled
Display brightness follow the bright dark variation tendency of ambient brightness to carry out corresponding change so that the display brightness of the display module with
The difference of ambient brightness is lower than predetermined luminance value.
3. display panel of air-conditioner as described in claim 1, which is characterized in that the display module includes multiple groups display unit,
Each display unit includes switching circuit and illuminator, and the power input of each switching circuit is electric with the power supply respectively
The power output end on road connects, and the controlled end of each switching circuit is connect with the control terminal of the control circuit respectively, institute
The power output end for stating switching circuit is connect with the power end of the illuminator；
The switching circuit, the corresponding conducting of control signal or shutdown for being exported according to the control circuit, so that described
Power circuit exports corresponding voltage to the illuminator；
The illuminator, the voltage correspondence for being exported according to the power circuit are lighted.
4. display panel of air-conditioner as claimed in claim 3, which is characterized in that the illuminator is light emitting diode.
5. display panel of air-conditioner as claimed in claim 4, which is characterized in that the switching circuit includes first resistor, second
Resistance and switching tube；
The power output end of the power input of the switching tube, the first end of the first resistor and the power circuit is mutual
Even, the controlled end interconnection of the second end of the first resistor, the first end of the second resistance and the switching tube, described second
The second end of resistance is the controlled end of the switching circuit.
6. display panel of air-conditioner as claimed in claim 5, which is characterized in that the luminance detection circuit include 3rd resistor,
4th resistance, photo resistance and first capacitor；
The first end of the photo resistance, the first end of the 3rd resistor and DC power supply terminal interconnection, the photosensitive electricity
The second end of resistance, the second end of the 3rd resistor, the first end of the first end of the 4th resistance and the first capacitor are mutual
Even, connecting node is the signal end of the luminance detection circuit, the second end of the 4th resistance and the first capacitor
Second end is grounded.
7. display panel of air-conditioner as claimed in claim 6, which is characterized in that the power circuit includes the 5th resistance, the 6th
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the second capacitor, third capacitor, operational amplifier, the first electricity
Sense and power supply chip；
The first end of 5th resistance is the controlled end of the power circuit, the second end of the 5th resistance, the described 6th
The first end of resistance and the interconnection of the inverting input terminal of the operational amplifier, the second end of the 6th resistance, the operation are put
The feedback pin connection of the output end and the power supply chip of big device, the power input of the power supply chip, the 7th electricity
The first end of resistance and DC power supply terminal interconnection, the second end of the 7th resistance, the first end of second capacitor and institute
The functional pin for stating power supply chip interconnects, and the second end of the ground terminal of the power supply chip and second capacitor is grounded, institute
State the first end interconnection of the output end of power supply chip, the first end of the third capacitor and first inductance, the third electricity
The second end of appearance is connect with the bootstrap voltage mode input terminal of the power supply chip, the second end of first inductance and the 8th electricity
The first end of resistance connects and connecting node is the power output end of the power circuit, the second end of the 8th resistance, described
The first end of 9th resistance and the interconnection of the first end of the tenth resistance, the second end ground connection of the 9th resistance, the described tenth
The second end of resistance is connect with the normal phase input end of the operational amplifier.
8. display panel of air-conditioner as claimed in claim 6, which is characterized in that the power circuit includes the 4th capacitor, the 5th
Capacitor, first diode, the second inductance and NMOS tube；
The drain electrode of the first end and the NMOS tube of 4th capacitor connects and connecting node is the power supply of the power circuit
Input terminal, the grid of the NMOS tube are the controlled end of the power circuit, the source electrode of the NMOS tube, the first diode
First end and second inductance first end interconnection, the first end of the second end of second inductance and the 5th capacitor
Connection, the second end of the 4th capacitor and the second end of the 5th capacitor are grounded.
9. display panel of air-conditioner as described in claim 1, which is characterized in that be additionally provided with voltage sample in the display driving plate
Circuit, the signal input part of the voltage sampling circuit are connect with the output end of the power circuit, the voltage sampling circuit
Signal output end connect with the signal end of the control circuit；
The voltage sampling circuit is sampled for the output voltage to the power circuit, and output voltage sampled signal
To the control circuit；
The control circuit is also used to control the power circuit constant current operation according to the voltage sampling signal.
10. a kind of air conditioner, which is characterized in that including display panel of air-conditioner as described in any one of claims 1-9.
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| CN201910822299.1A CN110534055B (en) | 2019-08-29 | 2019-08-29 | Air conditioner display panel and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910822299.1A CN110534055B (en) | 2019-08-29 | 2019-08-29 | Air conditioner display panel and air conditioner |
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| CN110534055B CN110534055B (en) | 2021-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113689827A (en) * | 2021-08-30 | 2021-11-23 | 四川虹美智能科技有限公司 | Air conditioner wire controller |
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| CN110534055B (en) | 2021-09-14 |
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