Top-mounted LED random question setting and answering teaching board

Abstract

The utility model provides a top-mounted LED random question setting and answering teaching board, which relates to the technical field of teaching appliances and comprises a long-strip-shaped teaching board body, an MCU, an operational symbol front digit LED display screen, an operational symbol rear digit LED display screen, an operational symbol display screen, an operational result display screen and a key input device. When the device is used, a teacher inputs mathematical operation problems through the key input device, the mathematical operation problems are displayed on the screen on the long-strip-shaped teaching board body, and the teacher can operate the device more conveniently; and meanwhile, an operational symbol front digital LED display screen, an operational symbol display screen and an operational symbol rear digital LED display screen can display input mathematical operation problems, the mathematical operation problems are more convenient to observe compared with densely arranged backlight keys, an operation result display screen displays operation results after a teacher presses an equal sign key, and students can conveniently compare own calculation results.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a random question-answering teaching board with an LED on top. Background Art

[0002] Patent CN201821639666.1 proposes a random question-and-answer teaching board with LEDs based on the application of probability theory. By setting a backlight key and a light-touch switch with light, and numbers and operation symbols engraved on the surface of the backlight key, it is convenient for teachers to control the backlight key to achieve the purpose of random questioning through a simple random pressing method. The light-touch switch with light lights up the backlight key after being pressed, making the pressed backlight key noticeable and eye-catching. Compared with traditional teaching methods, it is novel and can enhance the interest of students' learning, improve their attention, and improve the teaching effect.

[0003] Although the above scheme solves the technical problem of insufficient randomness, lack of fun, and failure to arouse the learning interest of most students, because the device is used in a suspended manner and questions are asked by pressing two groups of 9*9 backlight keys, it is not convenient for students to observe the numbers on the backlight keys when the device is small in size; and if the size of the device is set to be larger, the distance between the top backlight key and the bottom backlight key will be larger, which is not convenient for teachers to press and operate. At the same time, since the two groups of 9*9 backlight keys are distributed more densely, it is easy for students to see the serial number when observing, resulting in erroneous calculation results. Utility Model Content

[0004] The utility model aims to provide a random question-answering teaching board with an upper LED, which solves the technical problems of inconvenience in key operation for teachers and inconvenience in observation of mathematical operation problems for students.

[0005] The utility model provides a top mounted LED random question and answer teaching board, comprising:

[0006] The long strip teaching board body has an MCU inside;

[0007] The digital LED display screen in front of the operation symbol is embedded and assembled on the left side of the front wall of the long strip teaching board body;

[0008] The digital LED display screen after the operation symbol is embedded and assembled on the right side of the front wall of the long strip teaching board body;

[0009] An operation symbol display screen is embedded and assembled in the middle of the front wall of the long strip teaching board body;

[0010] The calculation result display screen is embedded and assembled on the lower side of the front wall of the long strip teaching board body;

[0011] A key input device, which is electrically connected to the MCU via a wire;

[0012] The MCU is electrically connected to the digital LED display screen before the operation symbol, the digital LED display screen after the operation symbol, the operation symbol display screen and the operation result display screen respectively.

[0013] As a further optimization scheme, in order to facilitate teachers to input mathematical operation problems and press the equal sign key to obtain calculation results when necessary, the key input device includes:

[0014] A housing on which a key input unit is mounted;

[0015] The key input unit is composed of numeric keys, operation symbol keys, equal sign keys and delete keys;

[0016] The number of the digital keys is nine, and the nine digital keys are distributed in a 3*3 manner;

[0017] The nine digital keys are respectively engraved with Arabic numerals 1-9;

[0018] The number of operation symbol keys is four, and the four operation symbol keys are distributed in a 2*2 manner;

[0019] The four operation symbol buttons are respectively engraved with +, -, X, ÷ operation symbols;

[0020] The equal sign key has a = symbol engraved on it;

[0021] The Delete key has a C engraved on it.

[0022] As a further optimization scheme, in order to overcome the limitation of the installation position caused by the external power supply through a separate power supply and facilitate the maintenance of the internal components of the long strip teaching board body, a rectangular window is opened on the rear wall of the long strip teaching board body, and a back panel is detachably installed in the rectangular window;

[0023] The back plate is equipped with a battery compartment, and a battery compartment cover is clamped on the battery compartment;

[0024] The battery compartment is electrically connected to the MCU.

[0025] As a further optimization solution, in order to broadcast the calculation results through the speaker and cooperate with the calculation result display screen to facilitate students to compare the calculation results, it also includes:

[0026] The speaker is embedded and assembled in a vacant position on the front wall of the long strip teaching board body, and the speaker is electrically connected to the MCU.

[0027] As a further optimization solution, in order to protect the long strip teaching board body and facilitate the installation of the first support base, a protective shell is sleeved on the rear end of the long strip teaching board body, and the first support base is spliced ​​on the bottom surface of the protective shell.

[0028] As a further optimization solution, in order to support the long strip teaching board body when needed, the first support base includes:

[0029] A vertical plate, the upper end of which is provided with a wedge-shaped sliding groove along the length direction;

[0030] The bottom surface of the protective shell is fixedly equipped with a strip-shaped wedge-shaped slider along the length direction, and the strip-shaped wedge-shaped slider is slidably engaged in the wedge-shaped slide groove;

[0031] The second supporting base is fixedly assembled on the lower end of the vertical plate.

[0032] As a further optimization solution, in order to stick the long strip teaching board body on a blackboard that can absorb the rubber magnetic sheet when needed, a rubber magnetic sheet is stuck and fixed to the rear wall of the protective shell.

[0033] As a further optimization solution, in order to facilitate the passage of wires, a wire groove is provided at the front wall edge of the protective shell corresponding to the wires electrically connected to the long strip teaching board body, and the wires electrically connected to the long strip teaching board body pass through the wire groove.

[0034] As a further optimization scheme, in order to improve the firmness of the installation of the protective shell, an interference fit connection structure is assembled between the inner wall of the protective shell and the outer wall of the long strip teaching board body, and the interference fit connection structure includes:

[0035] A protrusion is integrally formed on the edge of the inner wall of the protective shell;

[0036] The outer wall of the long strip teaching board body is provided with a slot corresponding to the protrusion;

[0037] The protrusion is inserted into the slot in an interference fit manner.

[0038] As a further optimization solution, in order to facilitate the removal of the long strip teaching board body from the protective shell, hand grip grooves are symmetrically opened on the left and right sides of the outer wall of the long strip teaching board body.

[0039] The utility model provides an upper mounted LED random question and answer teaching board through improvement, which has the following improvements and advantages compared with the prior art:

[0040] Firstly, when the device is used, the teacher inputs a mathematical operation problem through the key input device, the digits before the operation symbol are displayed on the digital LED display screen before the operation symbol, the digits after the operation symbol are displayed on the digital LED display screen after the operation symbol, and the operation symbol is displayed on the operation symbol display screen between the above two screens. The contents displayed on the above three screens constitute a mathematical operation problem from left to right, so that the questions can be randomly generated, which is more convenient for the teacher to operate.

[0041] Secondly, the digital LED display screen before the operation symbol, the operation symbol display screen and the digital LED display screen after the operation symbol can display the input mathematical operation problems at the same time, which is more convenient for observation compared with the densely arranged backlight keys. After the teacher presses the equal sign button, the operation result display screen displays the operation result, which is convenient for students to compare their own calculation results. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a schematic diagram of the structure of the utility model;

[0044] Figure 2 This is a schematic diagram of the key input device structure of the utility model;

[0045] Figure 3 This is a schematic diagram of the structure of the back plate of the long strip teaching board body of the utility model;

[0046] Figure 4 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0047] Description of reference numerals:

[0048] 1-long strip teaching board body, 2-protective shell, 3-first support base, 31-vertical board, 32-wedge-shaped slide groove, 33-strip wedge-shaped slider, 34-second support base, 4-digital LED display screen before operation symbol, 5-digital LED display screen after operation symbol, 6-operation symbol display screen, 7-operation result display screen, 8-key input device, 81-shell, 82-digital key, 83-operation symbol key, 84-equal sign key, 85-delete key, 9-rectangular window, 91-back plate, 10-speaker, 11-rubber magnetic sheet, 12-wire groove, 13-interference fit connection structure, 131-bump, 132-slot, 14-handle, 15-battery compartment. DETAILED DESCRIPTION

[0049] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] See also Figure 1-4 The utility model provides a technical solution: a random question-answering teaching board with an upper LED, comprising:

[0053] The long strip teaching board body 1 is provided with an MCU, and the MCU is solidified with a calculator operation program. It is a direct application of the prior art. The mathematical operation problem input by the key input device 8 is calculated by the MCU after pressing the equal sign key 84, and the calculation result is displayed on the calculation result display screen 7. This device is suitable for simple four arithmetic operations with one operation symbol;

[0054] The digital LED display screen 4 before the operation symbol is embedded and assembled on the left side of the front wall of the long strip teaching board body 1. The MCU controls the digital LED display screen 4 before the operation symbol to display the number before the operation symbol. Specifically, it is a 9-digit LED display screen;

[0055] The digital LED display screen 5 after the operation symbol is embedded and assembled on the right side of the front wall of the long strip teaching board body 1; the MCU controls the digital LED display screen 5 after the operation symbol to display the number after the operation symbol, which is specifically a 9-digit LED display screen;

[0056] The operation symbol display screen 6 is embedded and assembled in the middle of the front wall of the long strip teaching board body 1. The MCU controls the operation symbol input by the operation symbol display screen 6, which is specifically a 1-bit LED display screen;

[0057] The calculation result display screen 7 is embedded and assembled on the lower side of the front wall of the long strip teaching board body 1, and displays the correct calculation result after the student completes the calculation, so that the student can check whether his calculation result is correct. Specifically, it is an 18-bit LED display screen;

[0058] A key input device 8, which is electrically connected to the MCU via a wire;

[0059] In some other embodiments, the wires connected to the key input device 8 can be replaced by a wireless receiving device and a wireless transmitting device to achieve wireless connection and provide power to the key input device 8 separately;

[0060] The MCU is electrically connected to the digital LED display screen 4 before the operation symbol, the digital LED display screen 5 after the operation symbol, the operation symbol display screen 6 and the operation result display screen 7 respectively.

[0061] In some embodiments, in order to facilitate the teacher to input mathematical operation problems and press the equal sign key 84 to obtain the calculation results when necessary, the key input device 8 includes:

[0062] A housing 81 on which a key input unit is mounted;

[0063] The key input unit is composed of a numeric key 82, an operation key 83, an equal key 84 and a delete key 85;

[0064] The number of the number keys 82 is nine, and the nine number keys 82 are distributed in a 3*3 pattern;

[0065] The nine number keys 82 are respectively engraved with Arabic numerals 1-9;

[0066] The number of operation symbol keys 83 is four, and the four operation symbol keys 83 are distributed in a 2*2 manner;

[0067] The four operation symbol buttons 83 are respectively engraved with +, -, X, ÷ operation symbols;

[0068] The equal sign key 84 is engraved with a = symbol;

[0069] The delete button 85 has a C symbol engraved thereon.

[0070] When in use, the teacher can repeatedly press the nine numbers on the number keys 82 to input the numbers before and after the operation symbol. Before the operation symbol key 83 is pressed, the numbers before the operation symbol are input, and after the operation symbol key 83 is pressed, the numbers after the operation symbol are input. They are displayed on the corresponding display screens through MCU control. When the calculation result is needed, press the equal sign key 84. When an input error occurs, press the delete key 85 to delete the previous character.

[0071] In some embodiments, in order to overcome the limitation of the installation position caused by the external power supply through a separate power supply and facilitate the maintenance of the internal components of the long strip teaching board body 1, a rectangular window 9 is opened on the rear wall of the long strip teaching board body 1, and a back plate 91 is detachably mounted in the rectangular window 9;

[0072] The back plate 91 is provided with a battery compartment 15, and a battery compartment cover is clamped on the battery compartment 15, and the battery compartment cover is opened to facilitate replacement of the battery in the battery compartment 15;

[0073] The battery compartment 15 is electrically connected to the MCU.

[0074] In some embodiments, in order to broadcast the calculation results through the speaker 10, in cooperation with the calculation result display screen 7, it is convenient for students to compare the calculation results, and further includes:

[0075] The loudspeaker 10 is embedded and assembled in a vacant position on the front wall of the long strip teaching board body 1. The loudspeaker 10 is electrically connected to the MCU. The loudspeaker 10 is integrated with relevant circuits and can broadcast the calculation results.

[0076] In some embodiments, in order to protect the long teaching board body 1 and facilitate the installation of the first support base 3, a protective shell 2 is sleeved on the rear end of the long teaching board body 1, and the bottom surface of the protective shell 2 is spliced ​​with the first support base 3.

[0077] In some embodiments, in order to support the long strip teaching board body 1 when needed, the first support base 3 includes:

[0078] A vertical plate 31, the upper end of which is provided with a wedge-shaped slide groove 32 along the length direction;

[0079] The bottom surface of the protective shell 2 is fixedly equipped with a strip-shaped wedge-shaped slider 33 along the length direction. The strip-shaped wedge-shaped slider 33 is slidably engaged in the wedge-shaped slide groove 32. The strip-shaped wedge-shaped slider 33 and the wedge-shaped slide groove 32 on the bottom surface of the protective shell 2 are convenient for installation and removal;

[0080] The second support base 34 is fixedly assembled on the lower end of the vertical plate 31. The second support base 34 enlarges the contact area with the ground and improves the placement stability.

[0081] In some embodiments, in order to stick the long strip teaching board body 1 on a blackboard capable of absorbing rubber magnetic sheets when needed, a rubber magnetic sheet 11 is fixedly attached to the rear wall of the protective shell 2, and the rubber magnetic sheet 11 is a sheet-shaped rubber magnet.

[0082] There are two ways to fix the long strip teaching board body 1. One is to stick it on a blackboard that can be adsorbed by the rubber magnetic sheet on the back wall of the protective shell 2; the other is to support the long strip teaching board body 1 equipped with the protective shell 2 by the first supporting base 3, and the choice is made according to the actual situation.

[0083] In some embodiments, in order to facilitate the passage of wires, a wire groove 12 is opened at the front wall edge of the protective shell 2 corresponding to the wires electrically connected to the long strip teaching board body 1, and the wires electrically connected to the long strip teaching board body 1 pass through the wire groove 12.

[0084] In some embodiments, in order to improve the firmness of the installation of the protective shell 2, an interference fit connection structure 13 is installed between the inner wall of the protective shell 2 and the outer wall of the long strip teaching board body 1. The interference fit connection structure 13 includes;

[0085] A protrusion 131 is integrally formed on the inner wall edge of the protective shell 2;

[0086] The outer wall of the long strip teaching board body 1 is provided with a slot 132 corresponding to the protrusion 131;

[0087] The protrusion 131 is inserted into the slot 132 in an interference fit manner.

[0088] In some embodiments, in order to facilitate the removal of the long strip teaching board body 1 from the protective shell 2, hand grooves 14 are symmetrically opened on the left and right sides of the outer wall of the long strip teaching board body 1. The hand grooves 14 on both sides facilitate the insertion of hands, and two people cooperate to facilitate the removal of the long strip teaching board body 1 from the protective shell 2.

[0089] Working principle:

[0090] The long strip teaching board body 1 is provided with an MCU, and the MCU is solidified with a calculator operation program, which is a direct application of the prior art. The mathematical operation problem input by the key input device 8 is calculated by the MCU after pressing the equal sign key 84, and the calculation result is displayed on the calculation result display screen 7, which is convenient for students to check whether their calculation results are correct. This device is suitable for simple four arithmetic operations with one operation symbol;

[0091] MCU controls the digital LED display screen 4 before the operation symbol to display the number before the operation symbol, MCU controls the digital LED display screen 5 after the operation symbol to display the number after the operation symbol, and MCU controls the operation symbol display screen 6 to input the operation symbol;

[0092] When the key input device 8 is in use, the teacher can repeatedly press the nine numbers on the number keys 82 to input the numbers before and after the operation symbol. Before the operation symbol key 83 is pressed, the numbers before the operation symbol are input, and after the operation symbol key 83 is pressed, the numbers after the operation symbol are input. They are displayed on the corresponding display screens through MCU control. When the calculation result needs to be obtained, press the equal sign key 84. When an input error occurs, press the delete key 85 to delete the previous character.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A top mounted LED random question and answer teaching board, characterized in that: include: A long strip-shaped teaching board body (1) is provided with an MCU; A digital LED display screen (4) in front of the operation symbol, which is embedded and assembled on the left side of the front wall of the long strip teaching board body (1); A digital LED display screen (5) after the operation symbol is embedded and assembled on the right side of the front wall of the long strip teaching board body (1); An operation symbol display screen (6) is embedded and assembled in the middle of the front wall of the long strip teaching board body (1); A calculation result display screen (7) is embedded and assembled on the lower side of the front wall of the long strip teaching board body (1); A key input device (8), which is electrically connected to the MCU via a wire; The MCU is electrically connected to the digital LED display screen (4) before the operation symbol, the digital LED display screen (5) after the operation symbol, the operation symbol display screen (6) and the operation result display screen (7) respectively.

2. The top-mounted LED random question and answer teaching board according to claim 1, characterized in that: The key input device (8) comprises: A housing (81) on which a key input unit is mounted; The key input unit is composed of numeric keys (82), operation symbol keys (83), equal sign keys (84) and delete keys (85); The number of the digital keys (82) is nine, and the nine digital keys (82) are distributed in a 3*3 pattern; The nine digital keys (82) are respectively engraved with Arabic numerals 1-9; The number of operation symbol keys (83) is four, and the four operation symbol keys (83) are distributed in a 2*2 pattern; The four operation symbol buttons (83) are respectively engraved with +, -, X, ÷ operation symbols; The equal sign key (84) is engraved with a = symbol; The delete button (85) has a C symbol engraved on it.

3. The top mounted LED random question and answer teaching board according to claim 1, characterized in that: The rear wall of the long strip teaching board body (1) is provided with a rectangular window (9), and a back panel (91) is detachably mounted in the rectangular window (9); The back plate (91) is equipped with a battery compartment (15), and a battery compartment cover is clamped on the battery compartment (15); The battery compartment (15) is electrically connected to the MCU.

4. The top mounted LED random question and answer teaching board according to claim 1, characterized in that: Also includes: A loudspeaker (10) is embedded and assembled in a vacant position on the front wall of the long strip-shaped teaching board body (1); the loudspeaker (10) is electrically connected to the MCU.

5. The top mounted LED random question and answer teaching board according to claim 1, characterized in that: The rear end of the long strip teaching board body (1) is sleeved with a protective shell (2), and the bottom surface of the protective shell (2) is spliced ​​with a first supporting base (3).

6. The top-mounted LED random question and answer teaching board according to claim 5, characterized in that: The first supporting base (3) comprises: A vertical plate (31) having a wedge-shaped slide groove (32) formed at its upper end along the length direction; A strip-shaped wedge-shaped slider (33) is fixedly mounted on the bottom surface of the protective shell (2) along the length direction, and the strip-shaped wedge-shaped slider (33) is slidably engaged in the wedge-shaped slide groove (32); The second supporting base (34) is fixedly mounted on the lower end of the vertical plate (31).

7. The top mounted LED random question and answer teaching board according to claim 5, characterized in that: A rubber magnetic sheet (11) is glued and fixed to the rear wall of the protective shell (2).

8. The top mounted LED random question and answer teaching board according to claim 5, characterized in that: A wire groove (12) is provided at the front wall edge of the protective shell (2) corresponding to the wire electrically connected to the long strip teaching board body (1), and the wire electrically connected to the long strip teaching board body (1) passes through the wire groove (12).

9. The top-mounted LED random question and answer teaching board according to claim 5, characterized in that: An interference fit connection structure (13) is installed between the inner wall of the protective shell (2) and the outer wall of the long strip teaching board body (1), and the interference fit connection structure (13) includes: A protrusion (131) is integrally formed on the inner wall edge of the protective shell (2); The outer wall of the long strip teaching board body (1) is provided with a slot (132) corresponding to the protrusion (131); The protrusion (131) is inserted into the slot (132) in an interference fit manner.

10. The top mounted LED random question and answer teaching board according to claim 1, characterized in that: The outer wall of the long strip teaching board body (1) is symmetrically provided with hand-gripping grooves (14) on both sides.

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