CN202711620U - LED backlit liquid crystal display - Google Patents
LED backlit liquid crystal display Download PDFInfo
- Publication number
- CN202711620U CN202711620U CN 201220260834 CN201220260834U CN202711620U CN 202711620 U CN202711620 U CN 202711620U CN 201220260834 CN201220260834 CN 201220260834 CN 201220260834 U CN201220260834 U CN 201220260834U CN 202711620 U CN202711620 U CN 202711620U
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- CN
- China
- Prior art keywords
- liquid crystal
- crystal display
- led
- backlit liquid
- eliminating brush
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the technical field of displays, and particularly discloses an LED backlit liquid crystal display which comprises a display body. Two linear guide rails are axially symmetrically arranged on opposite borders of the display body, an electrostatic eliminating brush used for cleaning a display screen is arranged on a border perpendicular to the linear guide rails, and a driving device for driving the electrostatic eliminating brush to slide back and forth along the linear guide rails is arranged on the display body. The electrostatic eliminating brush used for eliminating static electricity and cleaning the display screen is arranged on the display body, and the driving device drives the electrostatic eliminating brush to slide on the display screen along the linear guide rails, so that the display screen can be automatically cleaned.
Description
Technical field
The utility model relates to the display technology field, particularly relates to a kind of LED-backlit liquid crystal display.
Background technology
Along with the raising of living standards of the people, in consumer electronics field, whether intellectuality and product that people more and more pay attention to consumption electronic product exert an influence to health.
The LED-backlit liquid crystal display because the characteristics of its low-power consumption, high brightness, wide visual range more and more are subject to liking of people, and are approved by masses, and replaces the main flow that traditional CDT display becomes display gradually.
But the LED-backlit liquid crystal display includes numerous low-voltage driving circuits, thereby can since the electrostatic effect that causes so that dust, grit etc. are easy to be attached to the display screen surface of display, such as untimely wiping cleaning, image sharpness is descended, thereby affecting people uses, and dust, the grit piled up are also polarized, thereby make the display screen surface of display can adsorb more dust, dust.
At present, when people clean the display screen of LED-backlit liquid crystal display, generally be to come the wiping display screen by manual mode with soft cloth, to keep display panel curtain cleaning.
The utility model content
The purpose of this utility model is to provide a kind of LED-backlit liquid crystal display of energy automated cleaning LCDs.
For realizing that the technical scheme that the purpose of this utility model adopts is:
A kind of LED-backlit liquid crystal display comprises monitor body; Rotational symmetry is provided with two line slideways on the relative frame of described monitor body, is provided with the electrostatic eliminating brush for clean display screen on the frame vertical with described line slideway; Be provided with the drive unit that the described electrostatic eliminating brush of driving slidably reciprocates along described line slideway at described monitor body.
The rotation direction that described drive unit comprises motor, be used for controlling described motor is made the electric machine controller of periodically-varied, is provided the direct supply of unified operating voltage, the drive link that is connected with the rotating shaft of described motor for described motor and electric machine controller; The described drive link other end connects described electrostatic eliminating brush.
Described electric machine controller comprises two power field efficient pipes and is used for output recurrent pulses control signal, thereby controls the PWM controller that rotation direction that described two power field efficient pipe alternate conduction control described motor is done periodically-varied.
Described motor is direct current generator.
Be provided with the gauge tap of described direct supply at described monitor body.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is by being provided for dispelling the electrostatic eliminating brush of static, clean display screen at monitor body, drive described electrostatic eliminating brush by drive unit and slidably reciprocate at display screen along described line slideway, thereby realized automated cleaning to the display screen of display.
Description of drawings
The master who Figure 1 shows that a kind of LED-backlit liquid crystal display that the utility model embodiment provides looks schematic diagram;
Fig. 2 is the principle schematic that is depicted as the cleaning course of a kind of LED-backlit liquid crystal display that the utility model embodiment provides;
Among the figure: 1. monitor body, 2. line slideway, 3. electrostatic eliminating brush, 4. power switch.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Referring to shown in Figure 1, a kind of LED-backlit liquid crystal display comprises monitor body 1; Rotational symmetry is provided with two line slideways 2 on the relative frame of described monitor body 1, be provided with the electrostatic eliminating brush 3 for clean display screen on the frame vertical with described line slideway 2, be provided with at described display 1 body and drive described electrostatic eliminating brush 3 moves to clean described display screen along described line slideway 2 drive unit.
Described line slideway 2 can place in the upper and lower side frame of monitor body 1, and described electrostatic eliminating brush 3 also can place on the Right Border of monitor body 1, or on the left border.
Described line slideway 2 also can place on the left and right side frame of monitor body, and described electrostatic eliminating brush 3 places on the upper and lower frame of monitor body 1.
Referring to shown in Figure 2, the rotation direction that described drive unit comprises motor, be used for controlling described motor is made the electric machine controller of periodically-varied, is provided the direct supply of unified operating voltage, the drive link that is connected with the rotating shaft of described motor for described motor and electric machine controller; The described drive link other end connects described electrostatic eliminating brush.
Described direct supply is battery, comprises chargeable battery and common battery.
Described motor is direct current generator.
For the ease of operation, the power control switch of described direct supply is located at the described monitor body lower left corner, can certainly be arranged on other position that is convenient for people to operate of monitor body, such as the lower right corner, the upper right corner or the upper left corner, the position specifically is set not limit.
Control described two power field efficient pipe N-MOSFET and P-MOSFET alternate conduction and control the PWM controller (Pulse Width Modulation) that the rotation direction of described motor is done periodically-varied thereby described electric machine controller comprises two power field efficient pipe N-MOSFET and P-MOSFET and is used for output recurrent pulses control signal.Described two power field efficient pipe N-MOSFET and P-MOSFET adopt half-bridge structure.
Below in conjunction with accompanying drawing 2, as follows to wiped clean principle of the present utility model and procedure declaration:
As shown in Figure 2, when pressing power switch, external dc power is that PWM controller (Pulse Width Modulator) provides operating voltage, PWM controller output pulse control signal, respectively up and down the opening and turn-offing of two power field effect pipe N-MOSFET and P-MOSFET of control, dutycycle respectively is 50%.
Two power field effect pipe N-MOSFET, P-MOSFET alternate conduction, when power field effect should be managed the N-MOSFET conducting, DC current flows through motor internal armature winding coil, direct current generator begins to rotate under the Lorentz force effect, drives drive link electrostatic eliminating brush is moved from right to left along described guide rail;
When arriving the left side of monitor body, it just in time is the recurrence interval of power field effect pipe N-MOSFET, pulse width can be set by feedback control unit, when electrostatic eliminating brush moves to the left border of monitor body, power field effect pipe N-MOSFET turn-offs, power field effect pipe P-MOSFET conducting this moment, after the power field effect pipe P-MOSFET conducting, electric current in the direct current generator interior loop consists of the loop by power field effect pipe P-MOSFET, opposite direction when its direction and power field effect pipe N-MOSFET conducting, direct current generator rotated by drive link and promoted electrostatic eliminating brush moves to the right side from the screen left side of display initial position this moment.
Because the PWM controller is when power switch conducts, only export a recurrence interval, therefore, when electrostatic eliminating brush is back to the right side initial position, the PWM controller is no longer exported pulse control signal, up and down two all not conductings of power field effect pipe this moment, motor stops operating, and has finished thus the process of an automatic erasing screen.
The above only is preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a LED-backlit liquid crystal display comprises monitor body; It is characterized in that, rotational symmetry is provided with two line slideways on the relative frame of described monitor body, is provided with the electrostatic eliminating brush for clean display screen on the frame vertical with described line slideway; Be provided with the drive unit that the described electrostatic eliminating brush of driving slidably reciprocates along described line slideway at described monitor body.
2. LED-backlit liquid crystal display according to claim 1, it is characterized in that, the rotation direction that described drive unit comprises motor, be used for controlling described motor is made the electric machine controller of periodically-varied, is provided the direct supply of unified operating voltage, the drive link that is connected with the rotating shaft of described motor for described motor and electric machine controller; The described drive link other end connects described electrostatic eliminating brush.
3. LED-backlit liquid crystal display according to claim 2, it is characterized in that, control the PWM controller that rotation direction that described two power field efficient pipe alternate conduction control described motor is done periodically-varied thereby described electric machine controller comprises two power field efficient pipes and is used for output recurrent pulses control signal.
4. according to claim 2 or 3 described LED-backlit liquid crystal display, it is characterized in that, described motor is direct current generator.
5. LED-backlit liquid crystal display according to claim 2 is characterized in that, is provided with the gauge tap of described direct supply at described monitor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220260834 CN202711620U (en) | 2012-06-05 | 2012-06-05 | LED backlit liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220260834 CN202711620U (en) | 2012-06-05 | 2012-06-05 | LED backlit liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202711620U true CN202711620U (en) | 2013-01-30 |
Family
ID=47591900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220260834 Expired - Fee Related CN202711620U (en) | 2012-06-05 | 2012-06-05 | LED backlit liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202711620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107256680A (en) * | 2017-06-02 | 2017-10-17 | 合肥市惠科精密模具有限公司 | A kind of LCDs with dustproof function |
-
2012
- 2012-06-05 CN CN 201220260834 patent/CN202711620U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107256680A (en) * | 2017-06-02 | 2017-10-17 | 合肥市惠科精密模具有限公司 | A kind of LCDs with dustproof function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20140605 |