CN112150944B - Portable speech prompting device - Google Patents
Portable speech prompting device Download PDFInfo
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- CN112150944B CN112150944B CN202011093514.8A CN202011093514A CN112150944B CN 112150944 B CN112150944 B CN 112150944B CN 202011093514 A CN202011093514 A CN 202011093514A CN 112150944 B CN112150944 B CN 112150944B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0413—Frames or casing structures therefor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0404—Signs, boards or panels, illuminated from behind the insignia the light source being enclosed in a box forming the character of the sign
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F13/0445—Frames
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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Abstract
The utility model provides a portable speech prompting device, relates to the technical field of speech prompting, and solves the problems that the fixation of manuscripts and shielding prompting can not be realized through structural improvement, and the light prompting can not be synchronously realized; the problem that the same structure can not realize both supporting and clamping cannot be realized through structural improvement. A portable speech prompting device for a college instructor comprises a box body; the box body is welded with a limiting seat. The connecting block has been cup jointed between two sliding seats, and connecting block and lecture manuscript contact to the connecting block has become the supplementary compact structure and supplementary structure of sheltering from of lecture manuscript, thereby on the one hand, can avoid when outdoor use the lecture manuscript produce the displacement under wind-force blows and then influence the normal speech of lecturer, and on the other hand, can realize the local of lecture characters and shelter from, and then conveniently find the lecture progress rapidly.
Description
Technical Field
The utility model belongs to the technical field of speech prompting, and particularly relates to a portable speech prompting device.
Background
People need give a speech under many circumstances, people will take the manuscript usually when speaking in public occasion, take off the manuscript and give a speech to most of the difficulty, and some many drafts appear under the circumstances that the writing is unclear, the circumstances that probably reads by mistake, and current suggestion structure is great, carries out the suggestion through the LED screen, uses inconveniently, has caused very big puzzlement for people.
As in application No.: CN201621458236.0, the utility model discloses a presentation prompting device convenient for speech, which comprises a supporting shell, wherein the upper surface of the supporting shell is provided with a display and an input keyboard, the input keyboard is positioned at the right side of the display, one side of the supporting shell is embedded with a supporting block, one end of the supporting block, which is positioned outside the supporting shell, is provided with an earphone interface, the rear surface of the supporting shell is provided with a clamping device, the inside of the supporting shell is provided with a storage, a digital comparator, an A \ D converter, a sound card, a CPU and a storage battery, the supporting shell can be connected with an external earphone through the earphone interface, so that the prompted sound is easier to be heard by a speaker, the presentation prompting device convenient for speech is connected with external equipment through a WIFI connector, the input speech is more convenient, the presentation prompting device convenient for speech is simple in structure and convenient to operate, and can accurately prompt the speech, the speaker can speak more accurately, and the structure is small, so that the speaker can be carried by people conveniently.
The speech prompting device similar to the above application has the following disadvantages:
one is that, when the existing device gives a speech with a manuscript, the existing device can not realize the fixation of the manuscript and the shielding prompt at the same time through the structural improvement, and can not synchronously realize the light prompt so that the speaker can quickly find the positions of characters and paragraphs; moreover, the fixing structure of the existing device is not reasonable enough, and the supporting and clamping of the same structure can not be realized through structural improvement.
Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a portable speech prompting device is provided to achieve the purpose of higher practical value.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a portable speech prompting device, which aims to solve the problems that the existing device cannot realize shielding prompt while fixing manuscripts through structural improvement when a speech with a manuscript is carried out, and cannot synchronously realize light prompt so that a speaker can quickly find the positions of characters and paragraphs; moreover, the fixing structure of the existing device is not reasonable enough, and the problem that the same structure can not realize both supporting and clamping through structural improvement cannot be realized.
The utility model relates to a portable speech prompting device, which is realized by the following specific technical means:
a portable speech prompting device comprises a box body; the box body is welded with a limiting seat, a lecture manuscript is placed on the box body, and an adjusting structure is installed on the limiting seat; the box body is welded with a fixing structure; the adjusting structure comprises two sliding seats and a connecting block, and the two sliding seats are respectively connected in the two sliding grooves in a sliding manner; a connecting block is welded between the two sliding seats, the connecting block is in contact with the lecture manuscript, and the connecting block forms an auxiliary pressing structure and an auxiliary shielding structure of the lecture manuscript; fixed knot constructs including adjusting pole C, adjust pole C's head end and tail end respectively with two supporting leg threaded connection, and adjust the screw thread opposite direction of pole C head end and tail end to adjust pole C and supporting leg and formed quick adjustment formula clamping structure jointly.
Furthermore, the box body comprises a baffle A and glass, the box body is of a rectangular box-shaped structure, three baffles A are welded on the top end face of the box body, and the three baffles A are mutually welded; a piece of glass is embedded in the box body.
Furthermore, the limiting seat comprises limiting blocks and sliding grooves, the limiting seat comprises two limiting blocks, the two limiting blocks are welded on the box body in a welding mode, and each limiting block is provided with one sliding groove; the top end faces of the two limiting blocks are of inclined structures, and the inclination angle is 60 degrees.
Furthermore, the adjusting structure also comprises a lamp tube, the two sliding seats penetrate through the box body, and one lamp tube is arranged between the two sliding seats; the lamp tube is positioned below the glass, and the lamp tube is aligned with the glass.
Furthermore, the adjusting structure also comprises two baffle plates B, and the two baffle plates B are welded on the sliding seat; the two baffle plates B are respectively positioned at the left side and the right side of the lamp tube, and the two baffle plates B jointly form a light shielding structure.
Furthermore, the adjusting structure further comprises a threaded rod, a gear A and an adjusting rod A, the threaded rod is rotatably connected to the limiting block and is in threaded connection with the sliding seat, and the gear A is mounted on the threaded rod; the adjusting rod A is rotatably connected to the box body and is provided with spiral teeth; the spiral teeth arranged on the adjusting rod A are meshed with the gear A, and the gear A and the adjusting rod A jointly form a worm and gear structure.
Furthermore, the adjusting structure also comprises two mounting seats A and two wiping blocks, wherein the two mounting seats A are respectively welded on the two baffle plates B; a wiping block is adhered to each mounting seat A, and the two wiping blocks are in contact with the glass.
Furthermore, the fixing structure comprises two mounting seats B, a rectangular rod, a cylindrical rod, a supporting leg, a gear B, a rotating seat and an adjusting rod B, and the two mounting seats B are symmetrically welded on the bottom end face of the box body; the head end and the tail end of the rectangular rod are respectively welded with a cylindrical rod, the two cylindrical rods are respectively and rotatably connected to the two mounting seats B, and the rectangular rod is symmetrically and slidably connected with two supporting legs; the gear B is arranged on the cylindrical rod; the rotating seat is welded on the mounting seat B in a welding mode, an adjusting rod B is connected to the rotating seat in a rotating mode, and spiral teeth are formed in the adjusting rod B; the spiral teeth arranged on the adjusting rod B are meshed with the gear B, and the adjusting rod B and the gear B jointly form a worm and gear structure.
Compared with the prior art, the utility model has the following beneficial effects:
through the setting of adjusting the structure, first, can realize sheltering from suggestion and instruction, and can also prevent that the lecture manuscript from producing the displacement or rocking under the wind-force effect, the second still can realize light and shine the suggestion, can make the lecturer find words and paragraph position rapidly accurately, and the third still can realize glass clean as follows specifically: a connecting block is welded between the two sliding seats and is in contact with the lecture manuscript, and the connecting block forms an auxiliary pressing structure and an auxiliary shielding structure of the lecture manuscript, so that on one hand, the phenomenon that the lecture manuscript is displaced under the blowing of wind power when the lecture manuscript is used outdoors to influence the normal lecture of a lecturer can be avoided, and on the other hand, the local shielding of the lecture characters can be realized, and the lecture progress can be conveniently and rapidly found; secondly, because the lamp tube is positioned below the glass and the lamp tube is aligned with the glass, the light beam generated by the lamp tube can penetrate through the glass to illuminate the lecture manuscript so as to realize auxiliary prompt; thirdly, the two baffle plates B are respectively positioned at the left side and the right side of the lamp tube, and the two baffle plates B jointly form a light shielding structure, so that light beams can be more gathered through shielding of the two baffle plates B, and the prompting effect is more obvious; fourthly, as the spiral teeth arranged on the adjusting rod A are meshed with the gear A, and the gear A and the adjusting rod A jointly form a worm and gear structure, the rotation of the gear A and the threaded rod can be realized through the rotation of the adjusting rod A, and the position adjustment of the sliding seat and the connecting block is further realized; fifthly, since one wiping block is adhered to each mounting seat A and two wiping blocks are in contact with the glass, the glass can be cleaned through the wiping blocks when the sliding seat is adjusted.
Through fixed knot structure's setting, can realize that auxiliary stay and centre gripping are fixed when outdoor use, specifically as follows: firstly, the spiral teeth arranged on the adjusting rod B are meshed with the gear B, and the adjusting rod B and the gear B jointly form a worm and gear structure, so that the angle adjustment of the supporting leg and the automatic locking after the adjustment can be realized; and secondly, the head end and the tail end of the adjusting rod C are respectively in threaded connection with the two supporting legs, the thread directions of the head end and the tail end of the adjusting rod C are opposite, and the adjusting rod C and the supporting legs jointly form a quick adjusting type clamping structure, so that the supporting legs can be clamped and fixed besides supporting.
Drawings
Fig. 1 is a schematic axial view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic view of the present invention in an axially disassembled configuration.
Fig. 4 is an enlarged schematic view of fig. 3 a according to the present invention.
Fig. 5 is an axial view of the adjustment structure of the present invention.
Fig. 6 is an enlarged view of the structure of fig. 5B according to the present invention.
Fig. 7 is a schematic axial view of the utility model in the other direction of fig. 3.
Fig. 8 is an enlarged view of the structure of fig. 7 at C according to the present invention.
Fig. 9 is an enlarged view of fig. 7D according to the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a box body; 101. a baffle A; 102. glass; 2. a limiting seat; 201. a limiting block; 202. a sliding groove; 3. a lecture manuscript; 4. an adjustment structure; 401. a sliding seat; 402. connecting blocks; 403. a lamp tube; 404. a baffle B; 405. a mounting seat A; 406. a wiping block; 407. a threaded rod; 408. a gear A; 409. adjusting a rod A; 5. a fixed structure; 501. a mounting seat B; 502. a rectangular bar; 503. a cylindrical rod; 504. supporting legs; 505. a gear B; 506. a rotating seat; 507. an adjusting rod B; 508. and adjusting a rod C.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 9:
the utility model provides a portable speech prompting device, which comprises a box body 1; a limiting seat 2 is welded on the box body 1 in a welding mode, a lecture manuscript 3 is placed on the box body 1, and an adjusting structure 4 is installed on the limiting seat 2; the box body 1 is welded with a fixed structure 5; referring to fig. 3, the adjusting structure 4 includes two sliding seats 401 and a connecting block 402, the two sliding seats 401 are respectively slidably connected in the two sliding grooves 202; a connecting block 402 is welded between the two sliding seats 401, the connecting block 402 is in contact with the lecture draft 3, and the connecting block 402 forms an auxiliary pressing structure and an auxiliary shielding structure of the lecture draft 3, so that on one hand, the phenomenon that the lecture draft 3 is displaced under the blowing of wind power when the lecture draft is used outdoors to influence the normal lecture of a lecturer can be avoided, and on the other hand, the local shielding of lecture characters can be realized to conveniently and rapidly find the lecture progress; referring to fig. 7, the fixing structure 5 includes an adjusting rod C508, the head end and the tail end of the adjusting rod C508 are respectively in threaded connection with the two supporting legs 504, the thread directions of the head end and the tail end of the adjusting rod C508 are opposite, and the adjusting rod C508 and the supporting legs 504 jointly form a quick adjusting type clamping structure, so that the supporting legs 504 can be clamped and fixed in addition to the supporting.
Referring to fig. 3, the box body 1 comprises a baffle a101 and a glass 102, the box body 1 is a rectangular box-shaped structure, three baffles a101 are welded on the top end face of the box body 1, and the three baffles a101 are welded with each other; the box body 1 is embedded with a piece of glass 102.
Referring to fig. 3, the limiting seat 2 includes limiting blocks 201 and sliding grooves 202, the limiting seat 2 is composed of two limiting blocks 201, the two limiting blocks 201 are welded to the box body 1, and each limiting block 201 is provided with one sliding groove 202; the top end faces of the two limiting blocks 201 are of inclined structures, and the inclination angle is 60 degrees, so that smoothness of the lecture manuscript 3 during placement can be improved.
Referring to fig. 3 and 7, the adjusting structure 4 further includes a lamp tube 403, two sliding seats 401 each penetrate through the box body 1, and one lamp tube 403 is installed between the two sliding seats 401; the light 403 is positioned below the glass 102 and the light 403 is aligned with the glass 102 so that the light beam generated by the light 403 can pass through the glass 102 to illuminate the lecture document 3 for auxiliary prompting.
Referring to fig. 5 and 6, the adjusting structure 4 further includes two baffles B404, and the two baffles B404 are welded to the sliding seat 401; the two baffles B404 are respectively positioned at the left side and the right side of the lamp tube 403, and the two baffles B404 jointly form a light shielding structure, so that light beams can be more focused through shielding of the two baffles B404, and the prompt effect is more obvious.
Referring to fig. 3 and 4, the adjusting structure 4 further includes a threaded rod 407, a gear a408 and an adjusting rod a409, the threaded rod 407 is rotatably connected to the limiting block 201, the threaded rod 407 is in threaded connection with the sliding seat 401, and the gear a408 is mounted on the threaded rod 407; the adjusting rod A409 is rotatably connected to the box body 1, and spiral teeth are arranged on the adjusting rod A409; the spiral teeth arranged on the adjusting rod A409 are meshed with the gear A408, and the gear A408 and the adjusting rod A409 jointly form a worm and gear structure, so that the rotation of the gear A408 and the threaded rod 407 can be realized through the rotation of the adjusting rod A409, and the position adjustment of the sliding seat 401 and the connecting block 402 is further realized.
Referring to fig. 5 and 6, the adjusting structure 4 further includes two mounting seats a405 and two wiping blocks 406, the two mounting seats a405 are respectively welded to the two baffles B404; one wiping block 406 is adhered to each mounting block a405 and both wiping blocks 406 are in contact with the glass 102 so that cleaning of the glass 102 is achieved by the wiping blocks 406 when the slide block 401 is adjusted.
Referring to fig. 7 and 9, the fixed structure 5 comprises two mounting bases B501, a rectangular rod 502, a cylindrical rod 503, a supporting leg 504, a gear B505, a rotating base 506 and an adjusting rod B507, wherein the two mounting bases B501 are symmetrically welded on the bottom end surface of the box body 1; the head end and the tail end of the rectangular rod 502 are respectively welded with a cylindrical rod 503, the two cylindrical rods 503 are respectively and rotatably connected to the two mounting seats B501, and the rectangular rod 502 is symmetrically and slidably connected with two supporting legs 504; gear B505 is mounted on cylindrical rod 503; the rotating seat 506 is welded on the mounting seat B501 in a welding mode, an adjusting rod B507 is connected to the rotating seat 506 in a rotating mode, and spiral teeth are formed in the adjusting rod B507; the spiral teeth arranged on the adjusting rod B507 are meshed with the gear B505, and the adjusting rod B507 and the gear B505 jointly form a worm gear structure, so that the angle adjustment of the supporting leg 504 and the automatic locking after the adjustment can be realized.
The specific use mode and function of the embodiment are as follows:
when in use, when the illumination prompt is needed, firstly, because the lamp 403 is positioned below the glass 102 and the lamp 403 is aligned with the glass 102, the light beam generated by the lamp 403 can pass through the glass 102 to illuminate the lecture manuscript 3 to realize the auxiliary prompt; secondly, the two baffles B404 are respectively positioned at the left side and the right side of the lamp tube 403, and the two baffles B404 jointly form a light shielding structure, so that light beams can be more focused through shielding of the two baffles B404, and the prompting effect is more obvious; thirdly, as the spiral teeth arranged on the adjusting rod A409 are meshed with the gear A408, and the gear A408 and the adjusting rod A409 jointly form a worm and gear structure, the rotation of the gear A408 and the threaded rod 407 can be realized through the rotation of the adjusting rod A409, and the position adjustment of the sliding seat 401 and the connecting block 402 is further realized;
when the supporting and fixing are needed, firstly, the spiral teeth arranged on the adjusting rod B507 are meshed with the gear B505, and the adjusting rod B507 and the gear B505 jointly form a worm and gear structure, so that the angle adjustment of the supporting leg 504 and the automatic locking after the adjustment can be realized; secondly, because of adjusting the head end and the tail end of pole C508 respectively with two supporting legs 504 threaded connection, and adjust the screw thread opposite direction of pole C508 head end and tail end to adjust pole C508 and supporting leg 504 and constitute quick adjustment formula clamping structure jointly, thereby supporting leg 504 still can realize the centre gripping fixedly except supporting.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (5)
1. A portable speech prompting device is characterized in that: comprises a box body (1); the box body (1) is welded with a limiting seat (2), a lecture manuscript (3) is placed on the box body (1), and an adjusting structure (4) is installed on the limiting seat (2); a fixed structure (5) is welded on the box body (1); the adjusting structure (4) comprises two sliding seats (401) and a connecting block (402), the two sliding seats (401) are arranged, and the two sliding seats (401) are respectively connected in the two sliding grooves (202) in a sliding manner; a connecting block (402) is welded between the two sliding seats (401), the connecting block (402) is in contact with the lecture manuscript (3), and the connecting block (402) forms an auxiliary pressing structure and an auxiliary shielding structure of the lecture manuscript (3);
the adjusting structure (4) further comprises a lamp tube (403), the two sliding seats (401) penetrate through the box body (1), and the lamp tube (403) is installed between the two sliding seats (401); the lamp tube (403) is positioned below the glass (102), and the lamp tube (403) is aligned with the glass (102);
the adjusting structure (4) further comprises two baffles B (404), the two baffles B (404) are arranged, and the two baffles B (404) are welded on the sliding seat (401); the two baffles B (404) are respectively positioned at the left side and the right side of the lamp tube (403), and the two baffles B (404) jointly form a lamp light shielding structure;
the adjusting structure (4) further comprises two mounting seats A (405) and two wiping blocks (406), wherein the two mounting seats A (405) are respectively welded on the two baffles B (404); one wiping block (406) is adhered to each mounting seat A (405), and two wiping blocks (406) are contacted with the glass (102);
fixed knot constructs (5) including adjusting pole C (508), the head end and the tail end of adjusting pole C (508) respectively with two supporting legs (504) threaded connection, and adjust the screw thread opposite direction of pole C (508) head end and tail end to adjust pole C (508) and supporting leg (504) and constitute quick adjustment formula clamping structure jointly.
2. The portable speech presentation instrument of claim 1, wherein: the box body (1) comprises baffles A (101) and glass (102), the box body (1) is of a rectangular box-shaped structure, three baffles A (101) are welded on the top end face of the box body (1), and the three baffles A (101) are mutually welded; a piece of glass (102) is embedded in the box body (1).
3. The portable speech presentation instrument of claim 1, wherein: the limiting seat (2) comprises limiting blocks (201) and sliding grooves (202), the limiting seat (2) is composed of two limiting blocks (201), the two limiting blocks (201) are welded on the box body (1) in a welding mode, and each limiting block (201) is provided with one sliding groove (202); the top end surfaces of the two limiting blocks (201) are of inclined structures, and the inclination angle is 60 degrees.
4. The portable speech presentation instrument of claim 1, wherein: the adjusting structure (4) further comprises a threaded rod (407), a gear A (408) and an adjusting rod A (409), the threaded rod (407) is rotatably connected to the limiting block (201), the threaded rod (407) is in threaded connection with the sliding seat (401), and the gear A (408) is mounted on the threaded rod (407); the adjusting rod A (409) is rotatably connected to the box body (1), and spiral teeth are formed in the adjusting rod A (409); the spiral teeth arranged on the adjusting rod A (409) are meshed with the gear A (408), and the gear A (408) and the adjusting rod A (409) jointly form a worm and gear structure.
5. The portable speech presentation instrument of claim 1, wherein: the fixing structure (5) comprises two mounting seats B (501), a rectangular rod (502), a cylindrical rod (503), a supporting leg (504), a gear B (505), a rotating seat (506) and an adjusting rod B (507), wherein the two mounting seats B (501) are symmetrically welded on the bottom end face of the box body (1); the head end and the tail end of the rectangular rod (502) are respectively welded with a cylindrical rod (503), the two cylindrical rods (503) are respectively and rotatably connected to the two mounting seats B (501), and the rectangular rod (502) is symmetrically and slidably connected with two supporting legs (504); the gear B (505) is mounted on the cylindrical rod (503); the rotating seat (506) is welded on the mounting seat B (501) in a welding mode, an adjusting rod B (507) is connected to the rotating seat (506) in a rotating mode, and spiral teeth are formed in the adjusting rod B (507); the spiral teeth arranged on the adjusting rod B (507) are meshed with the gear B (505), and the adjusting rod B (507) and the gear B (505) jointly form a worm and gear structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093514.8A CN112150944B (en) | 2020-10-14 | 2020-10-14 | Portable speech prompting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093514.8A CN112150944B (en) | 2020-10-14 | 2020-10-14 | Portable speech prompting device |
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| CN112150944A CN112150944A (en) | 2020-12-29 |
| CN112150944B true CN112150944B (en) | 2022-03-25 |
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| CN202011093514.8A Active CN112150944B (en) | 2020-10-14 | 2020-10-14 | Portable speech prompting device |
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| CN108766114A (en) * | 2018-05-28 | 2018-11-06 | 安徽沃屹智能装备有限公司 | A kind of industry teaching display board |
| CN210743302U (en) * | 2019-09-10 | 2020-06-12 | 胡敏歆 | Building engineering cost teaching presentation device |
| CN111627268A (en) * | 2020-06-16 | 2020-09-04 | 枣庄学院 | Portable recording equipment that music teaching teacher used |
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