Liquid crystal writing board

Abstract

The utility model discloses a liquid crystal writing board which comprises a writing board body, and a first containing unit is arranged on the back face of the writing board body. The first accommodating unit is detachably connected with the writing board body through the butt joint socket of the connecting seat; a main control module, and a power management module and a power supply interface which are respectively connected with the main control module are arranged in the first accommodating unit; the power management module is connected with the power supply interface; and the main control module and the power management module are respectively connected with components in the writing board body through connecting seats. According to the structure, the first containing unit can be conveniently detached from the liquid crystal writing board, so that operations such as maintenance and replacement of components, battery replacement or upgrading and maintenance of the main control module are facilitated, and the disassembly, assembly and maintenance efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal writing technical field especially relates to a liquid crystal writing board. BACKGROUND

[0002] The statements in this part only provide background technical information related to the utility model and do not necessarily constitute prior art.

[0003] Liquid crystal writing board (such as liquid crystal blackboard) has the advantages such as dustless environmental protection and has been widely used in the field of education. Its working principle is to use the bistable characteristic of liquid crystal, form writing pressure trace by the pressure on the liquid crystal writing board to realize writing, change the bistable liquid crystal structure by applying electric field, so that the writing trace on the liquid crystal writing device disappears to realize erasing.

[0004] Liquid crystal writing board often needs to have battery or external power supply, erasing voltage drive, infrared or electromagnetic or capacitive positioning, power management and other functions, and these functions need main controller to carry out unified control.

[0005] In the prior art, the main controller, battery, power management chip, voltage drive board and infrared or electromagnetic or capacitive positioning device and other electronic components necessary for realizing the above functions are integrated in the bottom or side frame of the liquid crystal writing board. When some components are damaged or need to be replaced, or the main controller program needs to be updated and upgraded, professional staff needs to go to the scene, disassemble the frame, and then replace or repair the internal integrated electronic components and other related operations. The operation process is very complex, greatly increases the maintenance efficiency and maintenance cost of after-sales, and affects the user experience. UTILITY MODEL CONTENTS

[0006] In order to solve the above problems, the utility model provides a liquid crystal writing board, which separately sets the components that need to be replaced or maintained outside the writing board, and fixes the components on the writing board through plug-in mode. The components can be conveniently and quickly disassembled and installed without disassembling the frame, which improves the maintenance efficiency and greatly reduces the maintenance cost.

[0007] In some embodiments, the following technical solutions are adopted:

[0008] A liquid crystal writing board comprises a writing board body, a first accommodating unit is arranged on the back of the writing board body, and the first accommodating unit and the writing board body are detachably connected through the butt joint socket of the connecting seat.

[0009] The first accommodating unit is internally provided with a main control module, and a power management module and a power supply interface connected with the main control module respectively; the power management module and the power supply interface are connected; the main control module and the power management module are connected with components in the writing board body through connecting seats respectively.

[0010] As a further scheme, the connecting seats are pluggable between the docking jacks.

[0011] As a further scheme, the power supply interface comprises an external power supply interface and a battery power supply interface, and the first accommodating unit is further provided with a power supply battery connected with the battery power supply interface.

[0012] As a further scheme, the first accommodating unit is further provided with a USB interface and an expansion interface, the main control module is connected with the expansion interface, the power management module is connected with the USB interface, and the main control module is connected with the USB interface through a HUB chip.

[0013] As a further scheme, the connecting seat comprises a first part and a second part capable of being plugged with each other, the first part is arranged on the first accommodating unit, and the second part is arranged on the second accommodating unit; the second accommodating unit is detachably fixed on the back of the writing board body.

[0014] As a further scheme, the second accommodating unit is provided with a touch communication interface and a key indication interface respectively, the touch communication interface and the key indication interface are connected with the connecting seat respectively; the connecting seat is directly connected with a driving chip or is connected with the driving chip through a driving communication interface arranged in the second accommodating unit.

[0015] As a further scheme, the connecting seat is connected with a positioning device arranged on the writing board body through the touch communication interface.

[0016] As a further scheme, the positioning device comprises an infrared positioning device, an electromagnetic positioning device or a capacitive positioning device.

[0017] As a further scheme, the connecting seat is connected with a key and an indicating lamp arranged on the writing board body through the key indication interface.

[0018] As a further scheme, the second accommodating unit is further provided with a temperature detection interface, and the second part of the connecting seat is connected with a temperature detection device arranged on the writing board body through the temperature detection interface.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] (1) the liquid crystal writing board is fixedly installed on the wall, and a gap is usually formed between the back of the writing board and the wall; the gap is fully utilized, two accommodation units are arranged on the back of the writing board, the components and elements that need to be replaced or maintained frequently, such as the main control module, the power management module and the battery, are arranged in the first accommodation unit, the first accommodation unit and the second accommodation unit are plug-in connected, and the first accommodation unit and the liquid crystal writing board are also detachably connected; therefore, the first accommodation unit can be conveniently detached from the liquid crystal writing board, so that the components and elements are maintained and replaced, the battery is replaced, or the main control module is upgraded and maintained, and the disassembly and maintenance efficiency is greatly improved.

[0021] (2) when the battery of the liquid crystal writing board needs to be replaced, the structure of the utility model does not need to wait for the arrival of professional technicians, and the user can disassemble and replace the battery; when program upgrading and maintenance or some component and element failure occurs, the first accommodation unit that is upgraded or normally works can replace the original first accommodation unit, professional technicians do not need to arrive on site for maintenance and repair, the operation is convenient and fast, and the normal use of the user is not affected.

[0022] Compared with the original operation of disassembling the frame of the writing board by professional technicians, the modular structure design of the utility model can greatly improve the maintenance and replacement efficiency.

[0023] Other features and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood by the practice of the aspect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic view of internal structures of the first accommodation unit and the second accommodation unit in the utility model embodiment;

[0025] Figure 2 It is an interface schematic view of the connecting seat in the second accommodation unit in the utility model embodiment;

[0026] Figure 3 It is a connection schematic view of the first accommodation unit, the second accommodation unit and the liquid crystal writing board in the utility model embodiment;

[0027] 1. The first accommodation unit, 2. The second accommodation unit, 3. The writing board body. DETAILED DESCRIPTION

[0028] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the present application. Unless otherwise specified, all technical and scientific terms used in the utility model have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0030] Embodiment One

[0031] In one or more embodiments, a liquid crystal writing board is disclosed, comprising a writing board body, a first accommodating unit 1 is arranged on the back of the writing board body; the first accommodating unit 1 and the writing board body 3 are detachably connected through the docking socket of the connecting seat.

[0032] In this embodiment, the connecting seat comprises a first part and a second part which are inserted into each other, wherein the first part is arranged on the first accommodating unit, the second part is arranged on the writing board body, and the first part and the second part are pluggable connected; in this way, the first accommodating unit and the writing board body can be quickly disassembled and assembled through plugging and unplugging.

[0033] In this embodiment, the first accommodating unit can be a hollow box body, and the box body is combined with the writing board body through the connecting seat. Figure 1 In this embodiment, the first accommodating unit is provided with a main control module, a power management module and a power supply interface which are respectively connected with the main control module; the power management module and the power supply interface are connected; the main control module and the power management module are respectively connected with the components in the writing board body through the connecting seat.

[0034] The power supply interface comprises an external power supply interface, a battery power supply interface and a USB interface, and the first accommodating unit is further provided with a power supply battery which is connected with the battery power supply interface; the external power supply interface can be connected with an external power supply; and the USB interface can be connected with an external device for power supply.

[0035] The power management module is respectively connected with the external power supply interface, the battery power supply interface and the USB interface, and is used for realizing power supply management; the main control module is connected with the USB interface through a HUB chip, and the USB interface can be connected with an external device, such as an upper computer, which can accurately identify the USB interface, so as to facilitate data transmission and power supply.

[0036] As an optional embodiment, the first accommodating unit is further provided with an expansion interface, and the main control module is connected with the expansion interface, so as to facilitate expansion application.

[0037] The battery, the main control module and the power management module are arranged in the first accommodating unit, and the main control module and the power management module can be connected with the components (such as a positioning device, a driving board, a key, an indicator light and the like) in the writing board body through the connecting seat to realize power management and control.

[0038] The first accommodating unit and the writing board body can be quickly disassembled and assembled, when the battery is out of power, the user can disassemble the first accommodating unit by himself, and then replace the battery, without the need of professional personnel to disassemble and assemble the frame of the writing board, which is convenient and fast, and does not affect normal use; when system upgrading and maintenance or repair are needed, another first accommodating unit which has completed maintenance and can normally work can be used to replace the original first accommodating unit, so that professional technical personnel do not need to be on site to operate, which is also convenient and fast, and does not affect normal use.

[0039] As an optional embodiment, the second accommodating unit 2 is further included, and the second part of the connecting seat is arranged on the second accommodating unit 2; the second accommodating unit 2 is detachably fixed on the back of the writing board body 3.

[0040] The first accommodating unit 1 can be pluggably connected with the second accommodating unit 2, so as to fix the first accommodating unit 1 on the writing board body 3.

[0041] In the embodiment, the second accommodating unit is respectively provided with a touch communication interface, a key indication interface, a temperature detection interface and a driving communication interface, which are connected with the second part of the connecting seat, and the interfaces can be connected with the main control module and the power management module in the first accommodating unit and the USB HUB chip through the connecting seat.

[0042] The touch communication interface can be connected with the positioning device arranged on the writing board body, and the main control module and the power management module can be connected with the positioning device through the connecting seat and the touch communication interface to perform power management and signal communication. As a specific example, the positioning device can be an infrared positioning device, an electromagnetic positioning device or a capacitive positioning device, which is used to realize positioning of a writing position on the writing board body, and then realize partial erasing or transmission and storage of writing content.

[0043] The key indication interface can be connected with the keys and the indicator light arranged on the writing board body, and the main control module and the power management module can be connected with the keys and the indicator light through the connecting seat and the key indication interface to perform power management and signal communication. As a specific example, the keys can include all-erasing keys, partial-erasing keys and locking keys which are commonly used on the writing board body, and the indicator light can include power indicator lights, writing indicator lights or erasing indicator lights which are commonly used on the writing board body.

[0044] The temperature detection interface can be connected with a temperature detection sensor arranged on the writing board body, and the main control module and the power management module can be connected with the temperature detection sensor through the connecting seat and the temperature detection interface to supply power management and signal communication for the temperature detection sensor.

[0045] The driving communication interface can be connected with a driving chip arranged on the writing board body, and the main control module and the power management module can be connected with the driving chip through the connecting seat and the driving communication interface; in another embodiment, the main control module and the power management module can be directly connected with the driving chip through the connecting seat; the driving chip is supplied with power management and driving signal communication to realize full or partial erasing of the writing content.

[0046] As an example, Figure 2 The specific model and connection pin of the TX24-30R-LI-H1E model connecting seat are given; the connecting seat interface is in the form of DIP15x2, and the PIN pitch is 2.54mm. Among them, the No. 1, 16, 26 and 28 pins are respectively connected with the corresponding keys and indicator lights on the writing board body through the key indication interface; the No. 2-8 pins are respectively connected with the X-direction driving chip arranged in the writing board body through the driving communication interface, or directly connected with the X-direction driving chip; the No. 9-15 pins are respectively connected with the Y-direction driving chip arranged in the writing board body through the driving communication interface, or directly connected with the Y-direction driving chip; the No. 22-25, 29 and 30 pins are respectively connected with the infrared positioning device arranged on the writing board body through the touch communication interface; the No. 17 pin is connected with the temperature sensor arranged in the writing board body through the temperature detection interface.

[0047] The second accommodating unit is also arranged on the back of the writing board body and is detachably connected with the writing board body, facilitating the maintenance of the electronic components.

[0048] As an optional example, in combination with Figure 3 The second accommodating unit of the embodiment is fixed on the writing board body by bolts, a connecting piece is arranged between the second accommodating unit and the first accommodating unit, the connecting piece is fixed on the writing board body, and the bottom of the first accommodating unit is fixed on the connecting piece by bolts, so that the connection of the first accommodating unit is more stable, and the disassembly and installation of the bolts are facilitated.

[0049] After the writing board body is connected with the wall surface, a certain gap is usually left between the writing board body and the wall surface, and the first accommodating unit and the second accommodating unit are arranged in the gap, so that the first accommodating unit and the second accommodating unit in the gap can be easily disassembled and installed from the bottom of the writing board body.

[0050] It should be noted that all the components involved in the embodiment are existing component structures, and the working principles thereof are the same as those of the existing liquid crystal writing board, the embodiment only improves the setting position and connection mode of the components, and does not change the working principle of the liquid crystal writing board itself.

[0051] Although the specific embodiments of the utility model have been described above with reference to the drawings, it is not a limitation on the protection scope of the utility model, and those skilled in the art should understand that various modifications or deformations made by those skilled in the art on the basis of the technical solutions of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A liquid crystal writing board comprising a writing board body, characterized by, The first accommodating unit is detachably connected with the writing board body through the docking jacks of the connecting seat. The first accommodating unit is provided with a main control module, a power management module and a power supply interface connected with the main control module.

2. A liquid crystal writing board as claimed in claim 1, characterized in that The docking jacks of the connecting seat are pluggable.

3. A liquid crystal writing board according to claim 1 or 2, wherein The power supply interface includes an external power supply interface and a battery power supply interface, and the first accommodating unit is further provided with a power supply battery connected with the battery power supply interface.

4. A liquid crystal writing board according to claim 1 or 2, wherein The first accommodating unit is further provided with a USB interface and an expansion interface, the main control module is connected with the expansion interface, the power management module is connected with the USB interface, and the main control module is connected with the USB interface through a USB HUB chip.

5. A liquid crystal writing board as claimed in claim 1, wherein The connecting seat includes a first part and a second part which can be inserted into each other, the first part is arranged on the first accommodating unit, and the second part is arranged on the second accommodating unit.

6. A liquid crystal writing board as claimed in claim 5, characterized in that The second accommodating unit is detachably fixed on the back of the writing board body.

7. A liquid crystal writing board as claimed in claim 6, characterized in that The second accommodating unit is further provided with a touch communication interface and a key indication interface, and the touch communication interface and the key indication interface are connected with the connecting seat.

8. A liquid crystal writing board as claimed in claim 7, characterized in that The connecting seat is directly connected with a driving chip or is connected with the driving chip through a driving communication interface arranged in the second accommodating unit.

9. A liquid crystal writing board as defined in claim 6, wherein The connecting seat is connected with a positioning device arranged on the writing board body through the touch communication interface.

10. A liquid crystal writing board as defined in claim 5, wherein The positioning device includes an infrared positioning device, an electromagnetic positioning device or a capacitive positioning device. The connecting seat is connected with a key and an indicating lamp arranged on the writing board body through the key indication interface. The second accommodating unit is further provided with a temperature detection interface, and the second part of the connecting seat is connected with a temperature detection device arranged on the writing board body through the temperature detection interface.

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