CN211106581U

CN211106581U - Japanese teaching aid

Info

Publication number: CN211106581U
Application number: CN201821775567.6U
Authority: CN
Inventors: 姜丽
Original assignee: Weinan Teachers College
Current assignee: Weinan Teachers College
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2020-07-28
Anticipated expiration: 2028-10-30

Abstract

The embodiment of the utility model discloses a Japanese teaching aid, which comprises a teaching blackboard, a heating blackboard eraser and a fountain pen, the teaching blackboard comprises a white gauze layer, a reversible temperature-sensitive color-changing layer, a metal plate layer, a heating layer and an air outlet layer from outside to inside, the reversible temperature-sensitive color-changing layer is glued with the metal plate layer, the critical color-changing temperature range of the reversible temperature-sensitive color-changing layer is 30-55 ℃, the metal plate layer is provided with a plurality of ventilated first micropores, the heating blackboard eraser comprises a shell, a battery plate, a heating sheet and an eraser body, wherein the battery plate and the heating sheet are arranged in the shell, the eraser body is sleeved on the outer sides of the battery plate and the heating sheet, the heating sheet is electrically connected with the battery plate, the fountain pen comprises a rubber head, a first water storage section, a rubber extrusion section, a second water storage section and an upper cover which are communicated from bottom to top, and a second micropore is formed in the rubber head. The utility model discloses japanese teaching aid need not to use the chalk, does not cause the damage to teacher's respiratory track, convenient to use moreover.

Description

Japanese teaching aid

Technical Field

The utility model relates to a teaching aid technical field, concretely relates to japanese teaching aid.

Background

Japanese (Japanese language) belongs to the lingering language family (Japanese-Korean language family), the number of native languages is 1 hundred million and 2500 million, and the number of people using Japanese accounts for 1.6% of the world population.

The prior art discloses a blackboard eraser assembly for japanese teaching, which comprises a chalk clamping element and a blackboard eraser main body, wherein the chalk clamping element is detachably mounted on the blackboard eraser main body, a japanese teacher can clamp chalk on the chalk clamping element and use the chalk clamped by the chalk clamping element for blackboard writing, and the blackboard eraser assembly for japanese teaching can be used for erasing blackboard writing by the japanese teacher, so that the japanese teacher can conveniently use the blackboard eraser assembly.

The prior art discloses a word teaching blackboard for Japanese teaching, which comprises a support sleeve, support legs, a claw, a movable column, a first blackboard, a second blackboard and a card box, wherein the support legs are uniformly arranged on the outer side of the support sleeve, and the top ends of the support legs are fixedly connected with a first cambered plate; loosen and tighten the puller bolt, be convenient for adjust the height of first blackboard and second blackboard, through inserting the card that is printed with japanese word or sentence of the card incasement, avoid the trouble that the teacher wrote, first blackboard and second blackboard provide writing of notes etc. for the teacher, can make the student go up the podium and see the card and write translation etc. on first blackboard and second blackboard equally, be convenient for inspect student's proficiency, place card incasement back into, because the effect of ball panel and fly leaf makes the card continuously insert card incasement back keep the position arrangement neat, be convenient for take out use in the future, when not using, can dismantle abutment sleeve and landing leg, be convenient for store and transport.

The prior art discloses a demonstration teaching aid for Japanese teaching, which comprises a blackboard, wherein the blackboard is formed by splicing a left part and a right part, transverse slide rails are arranged at the rear sides of the left part and the right part of the blackboard, slide blocks respectively corresponding to the left part and the right part of the blackboard are arranged in the slide rails, each slide block is fixedly connected with a sleeper, and the sleepers are fixedly connected with the corresponding part of the blackboard, so that the left part and the right part of the blackboard can slide along the slide rails to be separated and closed; the curtain is arranged between sleepers at the rear sides of the left and right parts of blackboards, one end of the curtain is arranged in the automatic reel and connected with the automatic winding mechanism, the other end of the curtain is connected with the straight rod, the automatic reel is fixedly connected with one side sleeper of the sleepers at the rear sides of the left and right parts of blackboards, the straight rod is fixedly connected with the other side sleeper of the sleepers at the rear sides of the left and right parts of blackboards, and the curtain can be unfolded when the left and right parts of blackboards are separated.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a japanese teaching aid, the utility model discloses japanese teaching aid need not to use the chalk, does not cause the damage to teacher's respiratory track, convenient to use moreover.

In order to achieve the purpose, the embodiment of the utility model provides a Japanese teaching aid, which comprises a teaching blackboard, a heating blackboard eraser and a fountain pen, the teaching blackboard comprises a white gauze layer, a reversible temperature-sensitive color-changing layer, a metal plate layer, a heating layer and an air outlet layer from outside to inside, the reversible temperature-sensitive color-changing layer is glued with the metal plate layer, the critical color-changing temperature range of the reversible temperature-sensitive color-changing layer is 30-55 ℃, the metal plate layer is provided with a plurality of ventilated first micropores, the heating blackboard eraser comprises a shell, a battery plate, a heating sheet and an eraser body, wherein the battery plate and the heating sheet are arranged in the shell, the eraser body is sleeved on the outer sides of the battery plate and the heating sheet, the heating sheet is electrically connected with the battery board, the fountain pen comprises a rubber head, a first water storage section, a rubber extrusion section, a second water storage section and an upper cover which are communicated from bottom to top, and a second micropore for water outlet is formed in the rubber head.

Optionally, reversible thermochromic particles are arranged in the reversible thermochromic layer, the particle size of the reversible thermochromic particles is 1-5mm, and the thickness of the reversible thermochromic layer is 5-15 mm; the pore diameter of the first micropores is 300-500 microns; the reversible thermochromic particles comprise 2000 parts of PHA (polyhydroxyalkanoate) plastics, 300 parts of color master batch, 60 parts of nano silicon oxide, 200 parts of PEG (polyethylene glycol) and 16 parts of sodium stearate, and the color master batch comprises 58 parts of PHA plastics, 12 parts of sodium stearate and 30 parts of thermochromic powder.

Optionally, an S-shaped resistance wire extending up and down is arranged in the heating layer, and a plurality of fans for blowing air out of the heating layer are arranged in the air outlet layer.

Optionally, a ceramic heat insulation sheet is arranged between the battery panel and the heating sheet.

Optionally, the heating sheet is electrically connected with the battery panel through a button switch, and an opening exposing the button switch is arranged in the shell.

The embodiment of the utility model provides a have following advantage:

The utility model discloses japanese teaching aid utilizes the principle that critical discoloration temperature range takes place the colour change for 30 ℃ -55 ℃ reversible temperature-sensitive discoloration layer when the temperature variation, water that is stained with normal atmospheric temperature through the water pen writes on white gauze layer, thereby reduce the local temperature of reversible temperature-sensitive discoloration layer above critical discoloration temperature, make reversible temperature-sensitive discoloration layer colour change, and utilize white gauze to be stained with can the adhesion make the colour of reversible temperature-sensitive discoloration layer can see through white gauze and be shown on reversible temperature-sensitive discoloration layer after water, thereby demonstrate characters or pattern on white gauze layer, need not to use the chalk, do not cause the damage to teacher's respiratory track, and convenient to use. Set up metal half layer, zone of heating and play fan layer behind the teaching blackboard can be fast to reversible temperature sensing discoloration layer accuse temperature and carry out the drying to white gauze layer, make reversible temperature sensing discoloration layer colour change controllable and characters or pattern can clear away, can also use the blackboard eraser that generates heat to have the white gauze layer of characters to heat in addition, thereby make moisture volatilize, clear away the characters, still be particularly suitable for using in winter of south no warm heating.

Drawings

Fig. 1 is a structure diagram of a teaching blackboard provided by the embodiment of the utility model 1.

Fig. 2 is a structural diagram of a heating blackboard eraser provided in embodiment 1 of the present invention.

Fig. 3 is a structural diagram of a pen according to embodiment 1 of the present invention.

Fig. 4 is a schematic view of writing on the teaching blackboard provided in embodiment 1 of the present invention.

Fig. 5 is a schematic diagram of the structure of the PID controller in the prior art patent cited in example 1.

In the figure:

11 reversible temperature-sensitive discoloration layer 13 metal sheet layer of white gauze layer 12

14 hot layer 15 air outlet layer 141 resistance wire

151 fan

21 casing 22 battery board 23 heating sheet

24 wiper 25 ceramic heat insulation sheet 26 button switch

27 opening

31 rubber head 32 first water storage section 33 rubber extrusion section

34 second water storage section 35 upper cover 311 second micro-hole

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Example 1

This embodiment provides a japanese teaching aid, as shown in fig. 1-3, teaching aid includes the teaching blackboard, generates heat blackboard eraser and water pen, the teaching blackboard is by outer to interior white gauze layer 11, reversible temperature sensing discoloration layer 12, sheet metal layer 13, zone of heating 14 and play tuber layer 15 of including, reversible temperature sensing discoloration layer 12 with sheet metal layer 13 splices, the critical temperature range that changes color of reversible temperature sensing discoloration layer 12 is 30 ℃ -55 ℃, be provided with a plurality of ventilated first micropores on sheet metal layer 13, the blackboard eraser that generates heat includes shell 21, set up panel 22 in shell 21, generate heat piece 23 and cover and establish the body 24 of wiping in panel 22, the piece 23 outside that generates heat, generate heat piece 23 with panel 22 electricity is connected, the water pen is by supreme rubber head 31, first water storage section 32, the rubber extrusion section 33 of intercommunication down, A second water storage section 34 and an upper cover 35, wherein a second micropore 311 for water outlet is arranged on the rubber head 31.

The utility model discloses japanese teaching aid utilizes the principle that critical discoloration temperature range takes place the colour change for 30 ℃ -55 ℃ reversible temperature-sensitive discoloration layer when the temperature variation, water of normal atmospheric temperature is stained with through the water pen writes on white gauze layer, thereby reduce the local temperature of reversible temperature-sensitive discoloration layer above critical discoloration temperature, make reversible temperature-sensitive discoloration layer colour change, and utilize white gauze to be stained with can the adhesion make the colour of reversible temperature-sensitive discoloration layer can see through white gauze and be shown on reversible temperature-sensitive discoloration layer after water, thereby show the characters on white gauze layer, for example write like figure 4 shown "しい" (open heart), need not to use the chalk, do not cause the damage to the teacher's respiratory track, and convenient to use. Set up metal half layer, zone of heating and play fan layer behind the teaching blackboard can be fast to reversible temperature sensing discoloration layer accuse temperature and dry white gauze layer, make reversible temperature sensing discoloration layer colour change controllable and characters or pattern can clear away, can also use the blackboard eraser that generates heat to the white gauze layer that has the characters in addition to make moisture volatilize, clear away the characters.

The fountain pen is used as shown in fig. 3, the upper cover 35 is firstly screwed off, water at normal temperature or at a temperature slightly lower than room temperature is injected into the fountain pen, then the upper cover is screwed on, then the rubber extrusion section 33 is lightly held by the thumb and the forefinger to pick up the fountain pen, when writing is needed, the flexible rubber extrusion section 33 is extruded, and since the first water storage section 32 and the second water storage section 34 are rigid (made of rigid plastics, for example), water is extruded through the second micropores 311 on the rubber head 31, and then writing can be carried out on the white gauze layer.

The heating blackboard eraser of the embodiment is used according to the principle as shown in fig. 2: the battery panel 22 supplies electric energy to the heating sheet 23 to heat the heating sheet (such as a copper sheet) so as to drive the wiping body 24 to heat, the wiping body can be made of cotton materials, heat is transferred to the white gauze layer to evaporate water (similar to an iron), partial water can be adsorbed, and the character clarity speed is improved.

The teaching blackboard of the embodiment has the following use principle: as shown in fig. 1, the metal half layer 13 is heated by the heating layer 14, so that heat is rapidly conducted to the reversible temperature-sensitive color-changing layer, a thermocouple can be arranged at the edge of the reversible temperature-sensitive color-changing layer to detect temperature, and meanwhile, a PID (proportion, integral, derivative) controller and a computer which are connected with the thermocouple can control heating power according to the temperature of the thermocouple in time, so that the temperature of the reversible temperature-sensitive color-changing layer is controlled at a specified value, for example, 1-5 ℃ above the critical color-changing temperature of the reversible temperature-sensitive color-changing layer. When characters need to be removed, the heating power of the heating layer can be improved, and the air outlet layer is started, so that the teaching blackboard is quickly dried. The control methods of the thermocouple, the controller and the heating layer are well known in the art, for example, refer to patent CN207020555U, as shown in fig. 5, which discloses a PID controller, a heater, a thermocouple, a computer (corresponding to the PID controller, the heating layer, the thermocouple and the computer in the present embodiment, respectively), wherein the PID controller includes a single chip, an a/D converter, a driving circuit, and an RS232 serial port; the upper end and the lower end in the incubator are respectively provided with a heater, the thermocouple is connected in the incubator in a penetrating way, the thermocouple is electrically connected with an A/D converter of the PID controller through a wire, the A/D converter is electrically connected with the single chip microcomputer through a wire, the output end of the single chip microcomputer is electrically connected with the driving motor through a wire, the driving circuit is electrically connected with the heaters through wires, and the computer is electrically connected with the PID controller through an RS232 serial port.

Example 2

The embodiment provides a reversible thermochromic layer, which is well known to those skilled in the art, and the color-changing critical point can be controlled by material composition, for example, chinese patent CN202918344U discloses a reversible thermochromic layer changing color at 31 ℃, chinese patent CN106893285A, embodiment 2 discloses a reversible thermochromic PHA material for 3D printing, which comprises PHA plastic 2Kg (2000 parts), color masterbatch 300g (300 parts), nano-silica 60g (60 parts), PEG200g (200 parts) and sodium stearate 16g (16 parts), the color masterbatch comprises PHA plastic 58 parts, sodium stearate 12 parts and thermochromic powder 30 parts, the color-changing temperatures are 33 ℃ and 55 ℃, blue below 33 ℃, colorless at 33-35 ℃, and orange above 33 ℃. In this embodiment, reversible thermochromic particles are disposed in the reversible thermochromic layer 12, the particle size of the reversible thermochromic particles is 1-5mm, and the thickness of the reversible thermochromic layer 12 is 5-15 mm; the pore diameter of the first micropores is 300-500 microns. The characters and the patterns can be clearly displayed through the reversible temperature-sensitive color-changing layer.

Example 3

The present embodiment provides a heating layer, which is well known to those skilled in the art, for example, as shown in fig. 1, an S-shaped resistance wire 141 extending up and down is disposed in the heating layer 14, and a plurality of fans 151 for blowing air to the heating layer 14 are disposed in the air outlet layer 15. The control mode of the heating layer is also well known by the technical personnel, and the temperature of the reversible temperature-sensitive color-changing layer is controlled to be 1-5 ℃ above the critical color-changing temperature during writing, so that when water with lower temperature is attached to the reversible temperature-sensitive color-changing layer, the local temperature of the reversible temperature-sensitive color-changing layer can be reduced, and the reversible temperature-sensitive color-changing layer can be changed locally.

Example 4

In the heating blackboard eraser of the present embodiment, as shown in fig. 2, a ceramic heat insulating sheet 25 is disposed between the battery panel 22 and the heat generating sheet 23, the heat generating sheet 23 is electrically connected to the battery panel 22 through a button switch 26, and an opening 27 for exposing the button switch 26 is disposed in the housing 21. Therefore, the battery panel and the heating sheet are separated, the safety of the battery panel is improved, and the heating controllability of the heating blackboard eraser can be improved.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a japanese teaching aid, a serial communication port, teaching aid includes the teaching blackboard, generates heat blackboard eraser and water pen, the teaching blackboard is by outer to interior white gauze layer (11), reversible temperature sensing discoloration layer (12), metal sheet layer (13), zone of heating (14) and play wind layer (15) including, reversible temperature sensing discoloration layer (12) with metal sheet layer (13) splice, the critical discoloration temperature scope of reversible temperature sensing discoloration layer (12) is 30 ℃ -55 ℃, be provided with a plurality of first micropores that ventilate on metal sheet layer (13), the blackboard eraser that generates heat includes shell (21), set up panel (22) in shell (21), generate heat piece (23) and cover and establish wiping body (24) in panel (22), generate heat piece (23) outside, generate heat piece (23) with panel (22) electricity is connected, the water pen is supreme rubber head (31) including the intercommunication down, First water storage section (32), rubber extrusion section (33), second water storage section (34) and upper cover (35), be provided with second micropore (311) that are used for going out water on rubber head (31).

2. The teaching aid according to claim 1, wherein reversible thermochromic particles are arranged in the reversible thermochromic layer (12), the particle size of the reversible thermochromic particles is 1-5mm, and the thickness of the reversible thermochromic layer (12) is 5-15 mm; the pore diameter of the first micropores is 300-500 microns.

3. Teaching aid as claimed in claim 1, characterized in that an S-shaped resistance wire (141) extending up and down is arranged in the heating layer (14), and a plurality of fans (151) blowing air to the heating layer (14) are arranged in the air-out layer (15).

4. Educational appliance according to claim 1, wherein a ceramic heat insulating sheet (25) is provided between the battery panel (22) and the heat generating sheet (23).

5. Teaching aid as claimed in claim 1, characterized in that the heat generating sheet (23) is electrically connected to the battery panel (22) by means of a push-button switch (26), an opening (27) being provided in the housing (21) exposing the push-button switch (26).