CN209373818U - Brightness self-adaptation type touch-control blackboard - Google Patents
Brightness self-adaptation type touch-control blackboard Download PDFInfo
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- CN209373818U CN209373818U CN201820741786.6U CN201820741786U CN209373818U CN 209373818 U CN209373818 U CN 209373818U CN 201820741786 U CN201820741786 U CN 201820741786U CN 209373818 U CN209373818 U CN 209373818U
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Abstract
The utility model discloses a kind of brightness self-adaptation type touch-control blackboard, and a dielectric layer is provided between touch control layer and liquid crystal display, and the writing layer and liquid crystal display are mounted on fixed frame, and the dielectric layer is glassy layer, acrylic layer or membrane material layer；Further include: alternating current input interface, AC to DC converter circuit, photosensitive sensors, signal processing module, it extracts the ambient brightness electrical signal of reaction ambient light brightness size from photosensitive sensors, and according to the matching relationship of this environmental light brightness size and backlight illumination size, to generate corresponding backlight brightness adjustment signal；Backlight LED drive circuit is connected to LED backlight lamp.The utility model brightness self-adaptation type touch-control blackboard automatically adjusts liquid crystal display backlight illumination to play the role of protecting user's eyes, can also play to a certain extent energy-efficient.
Description
Technical field
The utility model relates to a kind of brightness self-adaptation type touch-control blackboards, belong to intelligent touch technical field.
Background technique
With the development of information technology, all multi-products in educational equipment industry are towards information-based, intelligent direction
Innovation, such as: intelligent register system, the high photographing instrument of typing document, desk with display terminal etc..Blackboard in classroom is
One of highest facility of frequency of use in daily teaching work, each section teacher all must be on blackboard classmates' writing on the blackboard content,
Convey knowledge.The lecture contents of information age, teachers are rich and varied, therefore also propose higher want to the function of blackboard
It asks, blackboard can not only use chalk writing, additionally it is possible to the multimedia content for making classmates loved by all be presented.But existing intelligence
Blackboard when its liquid crystal display show when, brightness is constant, but often the brightness of environment in the morning, afternoon and evening and
Various Seasonal changes, and since display brightness and ambient brightness difference are excessive, will affect the impression of student or spectators' viewing
And effect.Therefore, above-mentioned technical problem how to be overcome to become the direction that those skilled in the art make great efforts.
Summary of the invention
The purpose of the utility model is to provide a kind of brightness self-adaptation type touch-control blackboard, the brightness self-adaptation type touch-control blackboards
Liquid crystal display backlight illumination is automatically adjusted to play the role of protecting user's eyes, energy conservation can also be played to a certain extent
Effect；And touch control layer and display are avoided because the too big caused deformation of size influences each other and cause the feelings of touch-control effect difference
Condition.
In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of brightness self-adaptation type touch-control blackboard, packet
Writing layer, touch control layer, liquid crystal display and fixed frame are included, the touch control layer is set on rear side of writing layer, the liquid crystal display
Screen is located at the touch control layer side opposite with writing layer, has LED backlight lamp in the liquid crystal display；
A dielectric layer is provided between the touch control layer and liquid crystal display, the writing layer and liquid crystal display are respectively mounted
In fixed frame, the dielectric layer is glassy layer, acrylic layer or membrane material layer；
Further include: alternating current input interface, for receiving from extraneous alternating current；
Alternating voltage from alternating current input interface is converted into DC voltage by AC to DC converter circuit；
Photosensitive sensors, for detecting extraneous environmental light brightness and being transformed into according to the environmental light brightness power sensed
Ambient brightness electrical signal of reaction containing brightness size information；
It is big to extract the ambient brightness electrical signal of reaction ambient light brightness from photosensitive sensors for signal processing module
It is small, and according to the matching relationship of this environmental light brightness size and backlight illumination size, to generate corresponding backlight brightness tune
Save signal；
Backlight LED drive circuit is connected to LED backlight lamp, according to the backlight brightness tune from signal processing module
The DC voltage of signal and AC to DC converter circuit is saved, the light-source brightness of LED backlight lamp in liquid crystal display is adjusted.
Further improved scheme is as follows in above-mentioned technical proposal:
1. in above scheme, the signal processing module is integrated on video card.
2. in above scheme, the alternating current input interface, AC to DC converter circuit and the installation of backlight LED drive circuit
In on power panel.
3. in above scheme, a dielectric layer, the writing layer and liquid are provided between the touch control layer and liquid crystal display
Crystal display screen is mounted on fixed frame.
4. in above scheme, the touch control layer is nanometer touch film.
5. in above scheme, being connected between the touch control layer and writing layer by wet combining.
Due to the application of the above technical scheme, the utility model has the advantage that compared with prior art
1. a kind of brightness self-adaptation type touch-control blackboard of the utility model, blackboard is real by the photosensitive photosensitive sensors in side
When convert electric signal (level signal) for the optical signal of environment and be transferred to signal processing module, regulate and control through signal processing module
Backlight LED drive circuit automatically adjusts liquid crystal display backlight illumination to play the role of protecting user's eyes, works as ambient brightness
When stronger, LCD screen brightness is automatically regulated to be most bright；When ambient brightness is weaker, it is people that liquid crystal display brightness adjust automatically, which reduces,
Eye observes more comfortable low-light level；In addition, due in brightness self-adaptation type touch-control blackboard the most important component of power consumption be exactly
Liquid crystal display, automatic adjustment liquid crystal display brightness can also be played the role of energy-efficient to a certain extent.
2. a kind of brightness self-adaptation type touch-control blackboard of the utility model comprising writing layer, touch control layer, display and solid
Determine frame, the touch control layer is set on rear side of writing layer, and the display is located at the touch control layer side opposite with writing layer, described
A dielectric layer, the setting of dielectric layer are provided between touch control layer and display, touch control layer different from the past directly connects with display
It connects, touch control layer and display is avoided to influence each other and cause the situation of touch-control effect difference because of the too big caused deformation of size, this
Outside, can effectively avoid display contacted with touch control layer and cause touch-control invalid or jump point and situations such as local touch-control failure.
Detailed description of the invention
Attached drawing 1 is the utility model brightness self-adaptation type touch-control blackboard structure schematic diagram；
Attached drawing 2 is the utility model brightness self-adaptation type touch-control blackboard partial structural diagram；
Attached drawing 3 is the utility model brightness self-adaptation type touch-control blackboard electrical principle block diagram.
In the figures above: 1, writing layer；2, touch control layer；3, dielectric layer；4, liquid crystal display；5, fixed frame；6, LED is carried on the back
Illuminator；7, alternating current input interface；8, AC to DC converter circuit；9, photosensitive sensors；10, signal processing module；11, backlight
LED drive circuit；12, video card；13, power panel.
Specific embodiment
Embodiment 1: a kind of brightness self-adaptation type touch-control blackboard, including writing layer 1, touch control layer 2, liquid crystal display 4 and solid
Determine frame 5, the touch control layer 2 is set to 1 rear side of writing layer, and it is opposite with writing layer 1 that the liquid crystal display 4 is located at touch control layer 2
Side, there is in the liquid crystal display 4 LED backlight lamp 6；
A dielectric layer 3, the writing layer 1 and liquid crystal display 4 are provided between the touch control layer 2 and liquid crystal display 4
It is mounted on fixed frame 5, the dielectric layer 3 is glassy layer, acrylic layer or membrane material layer；
Further include: alternating current input interface 7, for receiving from extraneous alternating current；
Alternating voltage from alternating current input interface is converted into DC voltage by AC to DC converter circuit 8；
Photosensitive sensors 9, for detecting extraneous environmental light brightness and being changed according to the environmental light brightness power sensed
At the ambient brightness electrical signal of reaction containing brightness size information；
It is big to extract the ambient brightness electrical signal of reaction ambient light brightness from photosensitive sensors for signal processing module 10
It is small, and according to the matching relationship of this environmental light brightness size and backlight illumination size, to generate corresponding backlight brightness tune
Save signal；
Backlight LED drive circuit 11 is connected to LED backlight lamp, according to the backlight brightness from signal processing module
The DC voltage of adjustment signal and AC to DC converter circuit adjusts the light-source brightness of LED backlight lamp in liquid crystal display.
Above-mentioned signal processing module 10 is integrated on video card 12.
A dielectric layer 3, the writing layer 1 and liquid crystal display 4 are provided between above-mentioned touch control layer 2 and liquid crystal display 4
It is mounted on fixed frame 5.
Embodiment 2: a kind of brightness self-adaptation type touch-control blackboard, including writing layer 1, touch control layer 2, liquid crystal display 4 and solid
Determine frame 5, the touch control layer 2 is set to 1 rear side of writing layer, and it is opposite with writing layer 1 that the liquid crystal display 4 is located at touch control layer 2
Side, there is in the liquid crystal display 4 LED backlight lamp 6；
A dielectric layer 3, the writing layer 1 and liquid crystal display 4 are provided between the touch control layer 2 and liquid crystal display 4
It is mounted on fixed frame 5, the dielectric layer 3 is glassy layer, acrylic layer or membrane material layer；
Further include: alternating current input interface 7, for receiving from extraneous alternating current；
Alternating voltage from alternating current input interface is converted into DC voltage by AC to DC converter circuit 8；
Photosensitive sensors 9, for detecting extraneous environmental light brightness and being changed according to the environmental light brightness power sensed
At the ambient brightness electrical signal of reaction containing brightness size information；
It is big to extract the ambient brightness electrical signal of reaction ambient light brightness from photosensitive sensors for signal processing module 10
It is small, and according to the matching relationship of this environmental light brightness size and backlight illumination size, to generate corresponding backlight brightness tune
Save signal；
Backlight LED drive circuit 11 is connected to LED backlight lamp, according to the backlight brightness from signal processing module
The DC voltage of adjustment signal and AC to DC converter circuit adjusts the light-source brightness of LED backlight lamp in liquid crystal display.
Above-mentioned alternating current input interface 7, AC to DC converter circuit 8 and backlight LED drive circuit 11 are installed on power panel 13
On.
Above-mentioned touch control layer 2 is nanometer touch film, is connected between above-mentioned touch control layer 2 and writing layer 1 by wet combining.
Working principle: photosensitive photosensitive sensors carry out real-time monitoring to the light source of environment, strong according to different environment light sources
Degree generates different level signals and is transferred to video card, and video card will be adjusted after handling real-time level signal with backlight
Signal form feeds back to power panel, changes backlight output electric current, in real time according to backlight adjustment signal to realize screen intensity
Automatic variation.
When using a kind of above-mentioned brightness self-adaptation type touch-control blackboard, blackboard passes through the photosensitive photosensitive sensors in side and in real time will
The optical signal of environment is converted into electric signal (level signal) and is transferred to signal processing module, regulates and controls backlight through signal processing module
LED drive circuit automatically adjusts liquid crystal display backlight illumination to play the role of protecting user's eyes, when ambient brightness is stronger
When, LCD screen brightness is automatically regulated to be most bright；When ambient brightness is weaker, liquid crystal display brightness adjust automatically is reduced to human eye sight
Examine more comfortable low-light level；In addition, due in brightness self-adaptation type touch-control blackboard the most important component of power consumption be exactly liquid crystal
Screen, automatic adjustment liquid crystal display brightness can also be played the role of energy-efficient to a certain extent；Again, the setting of dielectric layer, no
It is same as previous touch control layer directly to connect with display, avoids touch control layer and display because of the too big caused mutual shadow of deformation of size
Ring and lead to the situation of touch-control effect difference, in addition, can effectively avoid display contacted with touch control layer and cause touch-control in vain or
Jump point and situations such as local touch-control failure.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (6)
1. a kind of brightness self-adaptation type touch-control blackboard, it is characterised in that: including writing layer (1), touch control layer (2), liquid crystal display
(4) it is set on rear side of writing layer (1) with fixed frame (5), the touch control layer (2), the liquid crystal display (4) is located at touch control layer
(2) side opposite with writing layer (1) has LED backlight lamp (6) in the liquid crystal display (4)；
It is provided with a dielectric layer (3) between the touch control layer (2) and liquid crystal display (4), the writing layer (1) and liquid crystal display
Screen (4) is mounted on fixed frame (5), and the dielectric layer (3) is glassy layer, acrylic layer or membrane material layer；
Further include: alternating current input interface (7), for receiving from extraneous alternating current；
Alternating voltage from alternating current input interface is converted into DC voltage by AC to DC converter circuit (8)；
Photosensitive sensors (9), for detecting extraneous environmental light brightness and being transformed into according to the environmental light brightness power sensed
Ambient brightness electrical signal of reaction containing brightness size information；
It is big to extract the ambient brightness electrical signal of reaction ambient light brightness from photosensitive sensors for signal processing module (10)
It is small, and according to the matching relationship of this environmental light brightness size and backlight illumination size, to generate corresponding backlight brightness tune
Save signal；
Backlight LED drive circuit (11), is connected to LED backlight lamp, according to the backlight brightness tune from signal processing module
The DC voltage of signal and AC to DC converter circuit is saved, the light-source brightness of LED backlight lamp in liquid crystal display is adjusted.
2. brightness self-adaptation type touch-control blackboard according to claim 1, it is characterised in that: the signal processing module (10)
It is integrated on video card (12).
3. brightness self-adaptation type touch-control blackboard according to claim 1, it is characterised in that: the alternating current input interface
(7), AC to DC converter circuit (8) and backlight LED drive circuit (11) are installed on power panel (13).
4. brightness self-adaptation type touch-control blackboard according to claim 1, it is characterised in that: the touch control layer (2) and liquid crystal
It is provided between display screen (4) dielectric layer (3), the writing layer (1) and liquid crystal display (4) are mounted on fixed frame
(5) on.
5. brightness self-adaptation type touch-control blackboard according to claim 1, it is characterised in that: the touch control layer (2) is nanometer
Touch control film.
6. brightness self-adaptation type touch-control blackboard according to claim 1, it is characterised in that: the touch control layer (2) and writing
It is connected between layer (1) by wet combining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820741786.6U CN209373818U (en) | 2018-05-18 | 2018-05-18 | Brightness self-adaptation type touch-control blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820741786.6U CN209373818U (en) | 2018-05-18 | 2018-05-18 | Brightness self-adaptation type touch-control blackboard |
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| CN209373818U true CN209373818U (en) | 2019-09-10 |
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| CN201820741786.6U Active CN209373818U (en) | 2018-05-18 | 2018-05-18 | Brightness self-adaptation type touch-control blackboard |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415393A (en) * | 2020-03-16 | 2020-07-14 | 安博思华智能科技有限责任公司 | Method, device, medium and electronic equipment for adjusting multimedia blackboard display |
| CN113419388A (en) * | 2021-08-23 | 2021-09-21 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device and method adaptive to ambient light |
| CN114283752A (en) * | 2021-12-30 | 2022-04-05 | 吉林省钜鸿智能技术有限公司 | Light intensity self-adjusting liquid crystal display screen |
-
2018
- 2018-05-18 CN CN201820741786.6U patent/CN209373818U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415393A (en) * | 2020-03-16 | 2020-07-14 | 安博思华智能科技有限责任公司 | Method, device, medium and electronic equipment for adjusting multimedia blackboard display |
| CN111415393B (en) * | 2020-03-16 | 2023-08-01 | 安博思华智能科技有限责任公司 | Method and device for adjusting display of multimedia blackboard, medium and electronic equipment |
| CN113419388A (en) * | 2021-08-23 | 2021-09-21 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device and method adaptive to ambient light |
| CN113419388B (en) * | 2021-08-23 | 2021-11-26 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device and method adaptive to ambient light |
| CN114283752A (en) * | 2021-12-30 | 2022-04-05 | 吉林省钜鸿智能技术有限公司 | Light intensity self-adjusting liquid crystal display screen |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200729 Address after: 413000 west side of 1st floor, building 4, Zhongnan Kechuang Park, 355 Yingbin East Road, high tech Zone, Yiyang City, Hunan Province Patentee after: Hunan Fanpu Technology Co., Ltd Address before: 215000 C22 building, bio nano Park, 218 Xing Hu Street, Suzhou Industrial Park, Jiangsu. Patentee before: UC NANO TECHNOLOGIES Inc. |
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| TR01 | Transfer of patent right |