CN218446280U - Blackboard eraser applied to TFT liquid crystal writing board - Google Patents
Blackboard eraser applied to TFT liquid crystal writing board Download PDFInfo
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- CN218446280U CN218446280U CN202222466548.8U CN202222466548U CN218446280U CN 218446280 U CN218446280 U CN 218446280U CN 202222466548 U CN202222466548 U CN 202222466548U CN 218446280 U CN218446280 U CN 218446280U
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Abstract
The utility model provides a blackboard eraser applied to a TFT liquid crystal writing board, wherein a shell component comprises a felt pad, a shell and a bottom shell which are connected in a matching way, the bottom shell comprises a bottom plate and an annular protruding part on the bottom plate, the annular protruding part is arranged around a through hole of the bottom plate, and the felt pad provided with the through hole is connected with one side of the bottom plate, which is far away from the annular protruding part; the circuit component comprises a main control board, a battery and a wireless charging receiving coil, the main control board is connected with the annular protruding part, and the battery connected with the main control board is fixed on the inner side of the shell; the light-emitting component comprises a flexible lamp strip, a diffusion plate, a light guide plate and a reflective film, the flexible lamp strip electrically connected with the main control plate is arranged on the inner side of the annular protruding part, the main control plate is provided with a reflective photoelectric switch, the reflective photoelectric switch sequentially penetrates through the coil gasket, the wireless charging receiving coil, the reflective film and the through hole of the light guide plate, and the light outlet is opposite to the light hole in the diffusion plate; the utility model discloses the dazzling light that technique such as electric capacity touch-control brought triggers and direct-injection formula light leads to has been avoided.
Description
Technical Field
The utility model relates to a TFT liquid crystal writes technical field, in particular to be applied to blackboard eraser of TFT liquid crystal clipboard.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Patent No. CN112684618A discloses a technical solution for implementing local erasing on a liquid crystal writing device by using the light sensitivity of a TFT, which does not need to provide a positioning circuit and a driving circuit, simplifies the circuit structure of the product, and improves the reliability of the product.
However, the inventor finds that the prior optical erasing eraser for the TFT liquid crystal writing board has the following problems:
(1) Technologies such as capacitive touch are applied more, so that false triggering is easily caused;
(2) A dazzling bright spot can be formed by adopting direct lighting;
(3) The adapter is charged in a wired mode, and the use experience is poor;
(4) A circular eraser is adopted, and a certain erasing blind area exists.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a be applied to blackboard eraser of TFT liquid crystal clipboard adopts the luminous and light range finding of side to trigger the mode, has avoided the mistake that technologies such as electric capacity touch-control brought to trigger and the dazzling light that direct injection formula light leads to.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an eraser for use with a TFT liquid crystal writing board, comprising: the LED lamp comprises a shell assembly, a circuit assembly and a light emitting assembly;
the shell assembly comprises a felt pad, a shell and a bottom shell which are connected in a matching mode, the bottom shell comprises a bottom plate and an annular protruding part arranged on the bottom plate, the annular protruding part is arranged around a through hole of the bottom plate, and the felt pad with the through hole is connected with one side, far away from the annular protruding part, of the bottom plate;
the circuit assembly comprises a main control board, a battery and a wireless charging receiving coil, wherein the main control board is connected with the annular protruding part, and the battery connected with the main control board is fixed on the inner side of the shell;
the light-emitting component comprises a flexible lamp strip, a diffusion plate, a light guide plate and a reflective film, the flexible lamp strip electrically connected with the main control plate is arranged on the inner side of the annular protruding part, and a coil gasket, a wireless charging receiving coil, the reflective film, the light guide plate and the diffusion plate are sequentially arranged between the main control plate and the bottom plate;
the main control board is provided with a reflection-type photoelectric switch, the reflection-type photoelectric switch sequentially penetrates through the coil gasket, the wireless charging receiving coil, the reflection film and the through hole of the light guide plate, and a light outlet of the reflection-type photoelectric switch is opposite to the light hole in the diffusion plate.
As an optional implementation manner, a positioning column for limiting the main control board is arranged on the outer side of the annular protruding portion on the bottom plate, and a buckle for fixing the main control board is arranged on the annular protruding portion.
As an alternative implementation, the housing and the bottom shell are connected by bolts or screws.
As an optional implementation manner, a plurality of protruding portions for limiting the battery are arranged on the inner side wall of the shell, and a first gasket is arranged between the battery and the inner top wall of the outer side.
As an optional implementation manner, a second gasket is disposed between the battery and the main control board.
As an optional implementation manner, the outer side wall of the annular protruding portion is provided with a protrusion, and the inner side wall of the housing is provided with a groove matched with the protrusion.
As an optional implementation manner, the housing, the bottom casing, the felt pad, the reflective film, the light guide plate, and the diffusion plate are all rectangular structures.
As an alternative implementation, the annular protrusion is a continuous protrusion structure; alternatively, the annular protrusion has a protrusion structure intermittently at intervals.
As an optional implementation manner, the flexible light strip is in fit connection with the inner side wall of the annular protrusion part.
As an alternative implementation manner, the annular protrusion is an annular plate, and the annular plate is vertically and fixedly connected with the bottom plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. be applied to blackboard eraser of TFT liquid crystal clipboard, adopt light range finding to trigger luminous mode, avoided the spurious triggering that technologies such as electric capacity touch-control brought.
2. Be applied to blackboard eraser of TFT liquid crystal clipboard, adopt the luminous scheme of side, light is even soft, has avoided the dazzling light that direct-injection formula light leads to.
3. Be applied to blackboard eraser of TFT liquid crystal clipboard, adopt wireless mode of charging, improved user experience.
4. Be applied to blackboard eraser of TFT liquid crystal clipboard, adopt the design of rectangle formula, reduced greatly and erased the blind area.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to constitute a limitation on the invention.
FIG. 1 is an exploded view of an eraser applied to a TFT liquid crystal writing board according to an embodiment of the present invention;
FIG. 2 is a perspective view of an eraser for a TFT LCD writing board according to an embodiment of the present invention;
FIG. 3 is a bottom view of the eraser applied to a TFT LCD writing board according to an embodiment of the present invention;
FIG. 4 is a perspective cross-sectional view of an eraser applied to a TFT liquid crystal writing board according to an embodiment of the present invention;
FIG. 5 is a three-dimensional structure diagram of the case of the eraser applied to the TFT liquid crystal writing board according to the embodiment of the present invention;
fig. 6 is a schematic view illustrating an assembly of a main control board and a bottom case of the eraser applied to the TFT liquid crystal writing board according to an embodiment of the present invention;
wherein, 1, a bottom shell; 1-1, a positioning column; 1-2, buckling; 1-3, convex; 2. a housing; 2-1, limiting bone; 2-2, buckling; 2-3, a stud; 3. a flexible light strip; 4. a diffuser plate; 4-1, light holes; 5. a light guide plate; 6. a light-reflecting film; 7. a wireless charging receiving coil; 8. a coil spacer; 9. a main control board; 9-1, reflective photoelectric switch; 10. a battery; 11. a battery pad; 12. a felt pad; 13. and (4) screws.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is 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 in accordance with the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be fixedly connected, or may be integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
In the case of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
Example (b):
as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, an embodiment of the present invention provides an eraser for a TFT liquid crystal writing board, including: the LED lamp comprises a shell assembly, a circuit assembly and a light emitting assembly;
the shell assembly comprises a felt pad, a shell 2 and a bottom shell 1 which are connected in a matching mode, the bottom shell 1 comprises a bottom plate and an annular protruding portion arranged on the bottom plate, the annular protruding portion is arranged around a through hole of the bottom plate, and the felt pad 12 with the through hole is connected with one side, far away from the annular protruding portion, of the bottom plate;
the circuit assembly comprises a main control board 9, a battery 10 and a wireless charging receiving coil 7, wherein the main control board 9 is connected with the annular protruding part, the battery connected with the main control board 9 is fixed on the inner side of the shell 2, the wireless charging receiving coil 7 is electrically connected with the main control board 9, and the wireless charging receiving coil 7 is used for charging the battery 10;
specifically, in this embodiment, the battery 10 is a rechargeable lithium battery, the wireless charging receiving coil 7 is welded on the main control board 9, the battery 10 is charged through an internal circuit of the main control board 9, and the charging circuit on the main control board 9 herein adopts the existing scheme, which is not described herein again.
The light-emitting component comprises a flexible lamp strip 3, a diffusion plate 4, a light guide plate 5 and a reflective film 6, the flexible lamp strip 3 electrically connected with a main control board 9 is arranged on the inner side of the annular protruding part, and a coil gasket 8, a wireless charging receiving coil 7, the reflective film 6, the light guide plate 5 and the diffusion plate 4 are sequentially arranged between the main control board 9 and the bottom plate;
the main control board 9 is provided with a reflection-type photoelectric switch 9-1, the reflection-type photoelectric switch 9-1 sequentially penetrates through the coil gasket 8, the wireless charging receiving coil 7, the reflection film 6 and the through hole of the light guide plate 5, and a light outlet of the reflection-type photoelectric switch 9-1 is opposite to the light hole 4-1 on the diffusion plate 4; the reflective photoelectric switch 9-1 is used for light ray distance measurement and triggering light emission.
In the embodiment, a positioning column 1-1 for limiting the main control board is arranged on the outer side of the annular protruding portion on the bottom plate, a buckle 1-2 for fixing the main control board is arranged on the annular protruding portion, the positioning columns 1-1 are arranged at the edge of the bottom plate, a notch matched with the positioning column 1-1 is arranged at the edge of the main control board 9, and the limiting of the main control board is realized through the matching of the positioning column 1-1 and the buckle 1-2.
In this embodiment, the outer shell 2 and the bottom shell 1 are connected through a bolt or a screw, and specifically, the bolt or the screw sequentially penetrates through the bottom plate and the positioning column 1-1 and then is connected with a threaded hole of the outer shell 2.
In this embodiment, the inner side wall of the housing is provided with a plurality of limiting ribs 2-1 (i.e., protrusions) for limiting the battery, and a battery gasket 11 (i.e., a first gasket) is arranged between the battery 10 and the inner top wall of the outer side; a battery pad 11 (i.e., a second pad) is disposed between the battery 10 and the main control board.
In this embodiment, the outer side wall of the annular protrusion is provided with a protrusion 1-3, and the inner side wall of the housing is provided with a buckling position 2-2 (which may be a groove) matched with the protrusion 1-3.
In this embodiment, the housing 2, the bottom case 1, the felt pad 12, the reflective film 6, the light guide plate 5 and the diffusion plate 4 are all rectangular structures, and it is understood that in other embodiments, they may also be square structures.
In this embodiment, the annular protrusion is a continuous protrusion structure; or, the annular protruding portion is a protruding structure with intermittent intervals, and a person skilled in the art can select the protruding structure according to specific working conditions, which is not described herein again.
In this embodiment, the flexible lamp strip 3 is attached to the inner side wall of the annular protruding portion.
In this embodiment, the annular protrusion is an annular plate, and the annular plate is vertically and fixedly connected with the bottom plate.
The specific working mode of the eraser in this embodiment is as follows: when the eraser contacts the writing board surface, the reflective photoelectric switch 9-1 is triggered, the flexible lamp strip 3 is lightened, after the eraser is removed from the writing board surface, the reflective photoelectric switch 9-1 is closed, and the flexible lamp strip 3 is extinguished.
In this embodiment, the main control board 9 is provided with a main control chip, the main control chip may be an existing microprocessor, and a person skilled in the art can freely select the main control chip, and the main control chip is in communication connection with the reflective photoelectric switch 9-1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The blackboard eraser applied to the TFT liquid crystal writing board is characterized in that:
the method comprises the following steps: the LED lamp comprises a shell assembly, a circuit assembly and a light emitting assembly;
the shell assembly comprises a felt pad, a shell and a bottom shell which are connected in a matched mode, the bottom shell comprises a bottom plate and an annular protruding portion arranged on the bottom plate, the annular protruding portion is arranged around a through hole of the bottom plate, and the felt pad with the through hole is connected with one side, far away from the annular protruding portion, of the bottom plate;
the circuit assembly comprises a main control board, a battery and a wireless charging receiving coil, wherein the main control board is connected with the annular protruding part, and the battery connected with the main control board is fixed on the inner side of the shell;
the light-emitting component comprises a flexible lamp strip, a diffusion plate, a light guide plate and a reflective film, the flexible lamp strip electrically connected with the main control board is arranged on the inner side of the annular protruding part, and a coil gasket, a wireless charging receiving coil, the reflective film, the light guide plate and the diffusion plate are sequentially arranged between the main control board and the bottom plate;
the main control board is provided with a reflection-type photoelectric switch, the reflection-type photoelectric switch sequentially penetrates through the coil gasket, the wireless charging receiving coil, the reflection film and the through hole of the light guide plate, and a light outlet of the reflection-type photoelectric switch is opposite to the light hole in the diffusion plate.
2. The eraser applied to a TFT liquid crystal writing board according to claim 1, wherein:
the outside of the annular protruding part on the bottom plate is provided with a positioning column for limiting the main control board, and the annular protruding part is provided with a buckle for fixing the main control board.
3. The eraser for a TFT liquid crystal writing board according to claim 1, wherein:
the shell and the bottom shell are connected through bolts or screws.
4. The eraser applied to a TFT liquid crystal writing board according to claim 1, wherein:
be equipped with a plurality of protruding portions that are used for the battery spacing on the inside wall of shell, be equipped with first gasket between the interior roof in battery and the outside.
5. The eraser applied to a TFT liquid crystal writing board according to claim 1, wherein:
a second gasket is arranged between the battery and the main control panel.
6. The eraser for a TFT liquid crystal writing board according to claim 1, wherein:
the outer side wall of the annular protruding part is provided with a bulge, and the inner side wall of the shell is provided with a groove matched with the bulge.
7. The eraser applied to a TFT liquid crystal writing board according to claim 1, wherein:
the shell, the bottom shell, the felt pad, the reflective film, the light guide plate and the diffusion plate are all rectangular structures.
8. The eraser applied to a TFT liquid crystal writing board according to claim 1, wherein:
the annular protruding part is of a continuous protruding structure; alternatively, the annular protrusion may have a discontinuous protrusion structure.
9. The eraser for a TFT liquid crystal writing board according to claim 1, wherein:
the flexible lamp strip is attached to and connected with the inner side wall of the annular protruding portion.
10. The eraser for a TFT liquid crystal writing board according to any one of claims 1 to 9, wherein:
the annular protrusion part is an annular plate, and the annular plate is vertically and fixedly connected with the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222466548.8U CN218446280U (en) | 2022-09-16 | 2022-09-16 | Blackboard eraser applied to TFT liquid crystal writing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222466548.8U CN218446280U (en) | 2022-09-16 | 2022-09-16 | Blackboard eraser applied to TFT liquid crystal writing board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218446280U true CN218446280U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222466548.8U Active CN218446280U (en) | 2022-09-16 | 2022-09-16 | Blackboard eraser applied to TFT liquid crystal writing board |
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| Country | Link |
|---|---|
| CN (1) | CN218446280U (en) |
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- 2022-09-16 CN CN202222466548.8U patent/CN218446280U/en active Active
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