CN109979282B

CN109979282B - Teacher's pointer for history teaching

Info

Publication number: CN109979282B
Application number: CN201910381935.1A
Authority: CN
Inventors: 周维德; 张杭湖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-12-22
Anticipated expiration: 2039-05-08
Also published as: CN109979282A

Abstract

The invention discloses a pointer for history teaching, which comprises a strip-shaped shell and a projection device arranged in the shell, wherein a projection socket is arranged on the position of the shell relative to the projection device, the projection device comprises a projection lamp and a projection lens, the shell is arranged in a hollow cylindrical shape, a light path is formed in the shell, the projection lamp and the projection lens are respectively arranged on the front side and the rear side of the projection socket, a film feeding box and a film discharging box are sleeved on the position, close to the projection socket, of the shell, and the film feeding box and the film discharging box are oppositely arranged. The pointer for history teaching of the invention can effectively realize the effect of forming a simple projection structure by the arrangement of the shell and the projection device in the shell.

Description

Teacher's pointer for history teaching

Technical Field

The invention relates to a pointer, in particular to a pointer for history teaching.

Background

History teaching is always a difficult point in the teaching process, and the main reason is that history contents are more and most of the history contents are description of characters, so that the boring condition is easy to occur in the teaching process, and meanwhile, corresponding students can not effectively understand, so that the problem of low teaching efficiency can occur.

Therefore, in the prior art, the phenomenon of boring caused by pure-text description in history teaching is reduced by playing the PPT through the projector, and the interestingness in the teaching process is increased by switching the PPT to demonstrate a history album, however, the demonstration of the PPT needs to be based on the existing projector equipment, the existing projector equipment has higher cost and certain maintenance cost is needed subsequently, so that the PPT is not low in expenditure for schools, and cannot be well applicable to schools with less developed regions.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the pointer for history teaching, which is low in cost and can effectively reduce the boring condition.

In order to achieve the purpose, the invention provides the following technical scheme: a pointer for history teaching comprises a strip-shaped shell and a projection device arranged in the shell, wherein the shell is provided with a projection socket relative to the position of the projection device so as to allow a film with a history album to penetrate into the projection device and project the projection device onto an external wall, the projection device comprises a projection lamp and a projection lens, the shell is arranged in a hollow cylinder shape and forms a light path inside the shell, the projection lamp and the projection lens are respectively arranged on the front side and the rear side of the projection socket so as to project the history album onto the external wall through the projection lens by the light emitted by the projection lamp, a film inlet box and a film outlet box are sleeved on the position of the shell close to the projection socket, the film inlet box and the film outlet box are arranged oppositely and are respectively arranged on the two ends of the projection socket, a film rotating device for manual operation is arranged on the position of the film inlet box close to the projection socket, when the person operates the film rotating device, the film rotating device transfers the film in the film box to the light path in the projection socket and transfers the film in the projection socket to the film box.

As a further improvement of the present invention, the film rotating device comprises a film feeding rotating disc and a film discharging rotating disc, the projection socket comprises a film feeding port and a film discharging port, the film feeding port is arranged between the shell wall of the shell and the film feeding box, the film discharging port is arranged between the shell wall of the shell and the film discharging box, the film feeding rotating disc and the film discharging rotating disc are respectively and correspondingly and rotatably arranged in the film feeding port and the film discharging port one by one, the film feeding rotating disc and the film discharging rotating disc are connected with the film feeding box and the light path and the film discharging box, and two film holes for the film to be embedded are arranged on the film feeding rotating disc and the film is driven to enter the light path from the film feeding box and to be driven to the light path from the film feeding box by rotation.

As a further improvement of the invention, a cylindrical film storage cavity is arranged in the film feeding box, one end of the film storage cavity is provided with a film feeding push disc, the side surface of the other end is communicated with a film feeding opening, a film hole on the film feeding rotary disc is rotated into the film storage cavity, and the film feeding push disc is connected with the end part of the film storage cavity through a spring so as to push the film to be embedded into the film hole through the elastic force of the spring.

As a further improvement of the invention, the film feeding rotating disc and the film discharging rotating disc are arranged in the light path, the film holes are communicated with each other, a flat pushing device is arranged between the projection lamp and the film feeding rotating disc, and the flat pushing device pushes the film in the film feeding rotating disc into the film discharging rotating disc.

As a further improvement of the present invention, the flat pushing device includes a flat pushing ring, a flat pushing spring and a blocking ring, the blocking ring is fixed on one end of the sheet discharging rotating disc, which is opposite to the sheet feeding rotating disc, and is coaxially arranged with the film hole, the flat pushing ring is slidably arranged at a position between the projection lamp and the sheet feeding rotating disc, and is coaxially arranged with the film hole, one end of the flat pushing spring is fixedly connected with the flat pushing ring, and the other end of the flat pushing spring is fixedly connected with the housing, so as to push the flat pushing ring to move towards the sheet feeding rotating disc through elastic force, so as to push the film in the sheet feeding rotating disc into the sheet discharging rotating disc.

As a further improvement of the invention, the flat push ring comprises a ring body and two push blocks, the two push blocks are fixed on the end face of the flat push ring, which is opposite to one end of the flat push spring, the push blocks are in a plate shape with an arc edge on one side, the straight line edge of each push block is fixedly connected with the ring body, the middle parts of the arc edges of the push blocks are upwards jacked to form push parts for pushing the negative, and the push parts are gradually transited with the end face of the ring body.

As a further improvement of the invention, a cylindrical film storage cavity is arranged in the film outlet box, the side wall of one end of the film storage cavity is communicated with the film outlet so that the film outlet rotating disc can rotate the film into the film storage cavity, and a pushing device is arranged at one end of the film storage cavity, which is opposite to the film outlet, so that the film in the film outlet rotating disc can be pushed into the film storage cavity.

As a further improvement of the invention, the pushing device comprises a pushing disc and a pushing spring, one end of the pushing spring is fixedly connected with the end face of the pushing disc, and the other end of the pushing spring is fixedly connected with the film-out box, so that the film in the film-out rotating disc is pushed to enter the film-out storage cavity through the tower of the spring.

As a further improvement of the invention, one side of the film feeding box, which is back to the shell, is provided with a film feeding opening, one side of the film feeding pushing disc is fixed with a film feeding rod, the film feeding rod penetrates through the film feeding box and extends out to the outside for being stirred by hands, the position of the film feeding box, which is opposite to the film feeding rod, is provided with a film feeding slide hole, and the film feeding rod is arranged in the film feeding slide hole in a sliding manner.

The portable projection equipment has the advantages that the portable projection equipment can be effectively provided through the arrangement of the shell and the projection device in the shell, most of negative films can be stored in the negative film feeding box in the teaching process through the arrangement of the negative film feeding box, the negative film discharging box and the negative film rotating device, and then the negative films can be replaced through the action of the negative film rotating device.

Drawings

FIG. 1 is a schematic structural view of a pointer for history teaching according to the present invention;

FIG. 2 is an overall view of the push ring of FIG. 1;

FIG. 3 is an overall view of the push plate of FIG. 1;

fig. 4 is a top view of the feed rotor plate of fig. 1.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

Referring to fig. 1 to 4, the pointer for history teaching of this embodiment includes a long strip-shaped housing 1 and a projection device 2 disposed in the housing 1, the housing 1 is provided with a projection socket 11 at a position corresponding to the projection device 2, so that a film with a history album can be projected onto an external wall by penetrating into the projection device 2, the projection device 2 includes a projection lamp 21 and a projection lens 22, the housing 1 is disposed in a hollow cylindrical shape, a light path is formed inside the housing, the projection lamp 21 and the projection lens 22 are respectively disposed on front and rear sides of the projection socket 11, so that the history album can be projected onto the external wall by the projection lens 22 through the light emitted by the projection lamp 21, a film feeding box 3 and a film discharging box 4 are sleeved on the housing 1 at a position close to the projection socket, the film feeding box 3 and the film discharging box 4 are disposed opposite to each other, the photo film feeding device 5 is arranged at two ends of the projection socket 11, the position of the photo film feeding box 3 close to the projection socket 11 is provided with the photo film rotating device 5 for manual operation, when a person operates the photo film rotating device 5, the photo film feeding box 3 is transferred to the light path in the projection socket by the photo film rotating device 5, the photo film in the projection socket is transferred to the photo film discharging box 4, in the process of using the teacher's pointer of the embodiment, when the atlas projection is needed, the projection device 2 is only needed to be started, so that the projection lamp 21 is started to emit light, the projection lamp 21 outputs light beams to the photo film, and then outputs the light beams to the projection lens 22, and the atlas projection on the photo film can be effectively output to an external blackboard or white cloth through the imaging function of the projection lens 22, so that the problem of cost increase caused by installing a projector when the atlas needs to be projected is not required as in the prior art, through the arrangement of the film feeding box 3 and the film discharging box 4, the films needing to be projected can be placed in the film feeding box 3, the films after being projected can be placed in the film discharging box 4, when the films are required to be projected and replaced, the film rotating device 5 is driven by hands of a person, the films in the film feeding box 3 can be transferred to a light path of a projection socket through the action of the film rotating device 5, the films in the projection socket which are originally played can be transferred into the film discharging box 4, so that the rapid replacement of the projection album is greatly facilitated, the film needing to be projected in the whole class can be uniformly stuffed into the film feeding box 3 by a teacher before class, then, the substitution of album projection can be realized by class sides in the class process, and the use of the teacher is facilitated.

As a modified embodiment, the film-rotating device 5 comprises a film-feeding rotating disc 51 and a film-discharging rotating disc 53, the projection socket 11 comprises a film-feeding port 111 and a film-discharging port 112, the film-feeding port 111 is arranged between the shell wall of the shell 1 and the film-feeding box 3, the film-discharging port 112 is arranged between the shell wall of the shell 1 and the film-discharging box 4, the film-feeding rotating disc 51 and the film-discharging rotating disc 53 are respectively arranged in the film-feeding port 111 and the film-discharging port 112 in a one-to-one correspondence and are rotatably connected with the film-feeding box 3 and the light path-discharging box 4, two film holes 1111 for inserting the film are arranged on the film-feeding rotating disc 51 and the film-discharging rotating disc 4, so that the film is carried into the light path from the film-feeding box 3 and the film is carried in the light path by rotating the film-feeding rotating disc 51 and the film-discharging rotating disc 53, and the film is carried on the film-feeding box 3 and the film-discharging rotating disc 53 by the film holes, The film outlet box 4 and the projection socket 11 are transferred back and forth, and in the driving process, only two rotating disc plates are driven to rotate by hands, so that in the using process, a teacher only needs to stir the film inlet rotating disc 51 and the film outlet rotating disc 53 by fingers to rotate, and the conversion of the projected images can be realized when the teacher holds the pointer with one hand in the teaching process, wherein the wheel edge of the film inlet rotating disc 51 in the embodiment is provided with a toothed edge, one end of the film outlet rotating disc 53 is coaxially and fixedly connected with a gear, the synchronous linkage between the film inlet rotating disc 51 and the film outlet rotating disc 53 is realized in a way that the toothed edge is meshed with the gear, in the embodiment, the toothed edge of the film inlet rotating disc 51 slightly protrudes out of the film outlet box, so that the teacher can stir the fingers, and the gear meshing transmission is realized through the meshing between the teeth, therefore, the number of teeth of the tooth edge is the same as that of the teeth of the gear, but the teeth on the tooth edge are loose, so that the plate feeding rotary plate 51 rotates once and the plate discharging rotary plate 53 rotates once.

As a modified embodiment, the film feeding box 3 is internally provided with a cylindrical film storage cavity 31, one end of the film storage cavity 31 is provided with a film feeding push disc 32, the side surface of the other end is communicated with a film feeding port 111 for the film hole 1111 of the film feeding rotary disc 51 to be transferred into the film storage cavity 31, the film feeding push disc 32 is connected with the end part of the film storage cavity 31 through a spring so as to push the films to be embedded into the film hole 1111 through the spring elasticity, through the arrangement of the film storage cavity 31, the storage of a large number of films in the film feeding box 3 can be effectively realized, and the stacked films are pushed to move towards the film feeding rotary disc 51 through the action of the film feeding push disc 32 so as to gradually push the films into the film hole 1111 of the film feeding rotary disc 51, and the whole pushing process is realized only through the spring elasticity of the spring, thereby effectively simplifying the whole structure, make it can be fine be applicable to the limited occasion in space like this of film feeding box 3, and do not need extra power supply, also can practice thrift projection lamp 21's electric energy like this, increase projection time, wherein projection lamp 21's in this embodiment electric energy is provided through the lithium cell of embedded in shell 1, offers the socket for lithium cell charging on the shell 1.

As a modified specific embodiment, the film feeding rotary disc 51 and the film discharging rotary disc 53 are communicated with each other through a film hole 1111 arranged in the light path, a flat push device 52 is arranged between the projection lamp 21 and the film feeding rotary disc 51, the flat push device 52 pushes the film in the film feeding rotary disc 51 into the film discharging rotary disc 53, by arranging the flat push device 52, the movement of the negative can be realized in such a way that the negative box 3 enters the negative feeding rotary disc 51, then enters the light path through the rotation of the sheet feeding rotary disc 51, then enters the sheet discharging rotary disc 53 through the horizontal pushing device 52, then, after the projection is finished, the film is transferred into the film outlet box 4 through the rotation of the film outlet transfer disc 53, so that the film is effectively transferred, and overall structure is comparatively simple, and the theory of operation is also very simple, can effectually be applicable to the occasion that space is comparatively restricted like the light path in shell 1.

As a modified specific embodiment, the horizontal pushing device 52 comprises a horizontal pushing ring 521, a horizontal pushing spring 522 and a blocking ring 523, the blocking ring 523 is fixed on one end of the sheet outlet rotating disc 53, which faces away from the sheet inlet rotating disc 51, and is coaxially arranged with the bottom sheet hole 1111, the horizontal pushing ring 521 is slidably arranged at a position between the projection lamp 21 and the sheet inlet rotating disc 51, and is coaxially arranged with the bottom sheet hole 1111, one end of the horizontal pushing spring 522 is fixedly connected with the horizontal pushing ring 521, and the other end is fixedly connected with the housing 1, so as to push the horizontal pushing ring 521 to move towards the sheet inlet rotating disc 51 by elastic force, so as to push the bottom sheet in the sheet inlet rotating disc 51 into the sheet outlet rotating disc 53, through the arrangement of the horizontal pushing spring 522 and the horizontal pushing ring 521, the horizontal pushing ring 521 can be pushed to slide towards the blocking ring 523 by the elastic force of the horizontal pushing spring 522, thereby effectively pushing the bottom sheet in the sheet inlet rotating disc 51 to be transferred into the sheet outlet rotating disc 53, and overall structure is hollow mode, consequently can not influence the transmission of projection light, also need not extra setting up the power supply simultaneously, just so can be fine be applicable to the occasion that the space is restricted like shell 1, can simple effectual realization to the transfer of film.

As a specific embodiment of improvement, the flat push ring 521 includes a ring body 5211 and two push blocks 5212, the two push blocks 5212 are fixed on an end surface of the flat push ring 521, which is opposite to one end of the flat push spring 522, the push block 5212 is in a plate shape with an arc edge on one side, a linear edge of the push block 5212 is fixedly connected with the ring body 5211, a middle portion of the arc edge of the push block 5212 is pushed upwards to form a push portion for pushing the bottom plate, the push portion is gradually transited to the end surface of the ring body 5211, since the feed rotor disc 51 in this embodiment is in a solid disc structure, then the bottom plate holes 1111 are two holes opened on the solid disc, in this way, in the process that the push block 5212 is in contact with the feed rotor disc 51, due to the existence of the push block 5212, the disc body of the feed rotor disc 51 is pushed against and pushes the push block 5212 to slide, thereby compressing the flat push spring 522, and in the process that the feed rotor disc 51 continues to rotate, the film hole 1111 will gradually contact the pushing block 5212, when the pushing block 5212 is fully inserted into the film hole 1111, the pushing block 5212 will push the film from the film feeding rotating disc 51 into the film discharging rotating disc 53 under the action of the flat pushing spring 522, and then when the film needs to be replaced, the film discharging rotating disc 53 will rotate with the film to be replaced and enter the film discharging box 4, and the film feeding rotating disc 53 will rotate to press the pushing block 5212, so that the pushing block 5212 is pushed to compress the flat pushing spring 522 to accumulate the pushing force to push the film from the film feeding rotating disc 51 to the film discharging rotating disc 53 next time, thus the film can be pushed into the film discharging rotating disc 53 easily and effectively when the film feeding rotating disc 51 with the film is transferred into the light path.

As an improved specific embodiment, the film discharging box 4 is internally provided with a cylindrical film storing cavity 41, the side wall of one end of the film storing cavity 41 is communicated with the film discharging port 112 so that the film discharging rotating disc 53 can rotate the film into the film storing cavity 41 with the film, the end of the film storing cavity 41 opposite to the film discharging port 112 is provided with a pushing device 42 so as to push the film in the film discharging rotating disc 53 into the film storing cavity 41, and the films rotated by the film discharging rotating disc 53 can be effectively pushed into the film storing cavity 41 one by one through the arrangement of the pushing device 42, so that the played film is effectively temporarily stored, and then the film can be taken out from the film storing cavity 41 in the embodiment by opening an outlet at one end of the film storing cavity 41 back to the pushing device 42.

As a specific embodiment of the improvement, the ejector 42 includes an ejector disc 421 and an ejector spring 422, one end of the ejector spring 422 is fixedly connected to the end face of the ejector disc 421, and the other end is fixedly connected to the negative film box 4, so as to push the negative film in the negative film rotating disc 53 to enter the negative film storage cavity 41 through the spring in the tower, and push the ejector spring 422 and the ejector disc 421, so as to effectively achieve the effect of pushing the negative film to enter the negative film storage cavity 41.

As a modified embodiment, advance one side of film box 3 back to shell 1 and seted up film feeding port 33, one side of advancing film pushing tray 32 is fixed with patch pole 34, film feeding pole 34 passes and advances film box 3 and stretch out the external confession people hand and stir, advance film box 3 and seted up patch slide hole 35 for film feeding pole 34 on the position, setting that film feeding pole 34 can slide is in patch slide hole 35, through the setting of film feeding port 33 and patch pole 34, alright effectual realization is through the mode of stirring film feeding pole 34, and the film that will play is fast convenient to be supplemented into film box 3.

In summary, the teacher's pointer for history teaching of this embodiment can effectively realize that a large number of negative films are temporarily stored in the negative film feeding box 3 through the setting of the negative film feeding box 3, the negative film discharging box 4 and the film rotating device 5, and then the film rotating device 5 rotates the film to play the film.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a teacher's pointer for history teaching which characterized in that: comprises a long strip-shaped shell (1) and a projection device (2) arranged in the shell (1), wherein the shell (1) is provided with a projection socket (11) relative to the position of the projection device (2) so as to allow a film with a history album to pass through the projection device (2) and project the projection device (2) onto an external wall, the projection device (2) comprises a projection lamp (21) and a projection lens (22), the shell (1) is arranged in a hollow cylindrical shape and forms a light path inside the shell, the projection lamp (21) and the projection lens (22) are respectively arranged on the front side and the rear side of the projection socket (11) so as to project the history album onto the external wall through the projection lens (22) by the light emitted by the projection lamp (21), the shell (1) is sleeved with a film inlet box (3) and a film outlet box (4) at the position close to the projection socket, the film feeding box (3) and the film discharging box (4) are arranged oppositely and are respectively arranged at two ends of the projection socket (11), a film rotating device (5) for manual operation is arranged at a position close to the projection socket (11) in the film feeding box (3), when a person operates the film rotating device (5), the film rotating device (5) transfers the film in the film feeding box (3) to a light path in the projection socket and transfers the film in the projection socket to the film discharging box (4), the film rotating device (5) comprises a film feeding film rotating disc (51) and a film discharging film rotating disc (53), the projection socket (11) comprises a film feeding port (111) and a film discharging port (112), the film feeding port (111) is opened between the shell wall of the shell (1) and the film feeding box (3), and the film discharging port (112) is opened between the shell wall of the shell (1) and the film discharging box (4), the film feeding rotating disc (51) and the film discharging rotating disc (53) are respectively rotatably arranged in the film feeding port (111) and the film discharging port (112) in a one-to-one correspondence mode, the film feeding rotating disc (51) is connected with the film feeding box (3) and the light path, the film discharging rotating disc (53) is connected with the light path and the film discharging box (4), the film feeding rotating disc (51) and the film discharging rotating disc (53) are provided with two film holes (1111) for inserting films, the film feeding rotating disc (51) drives the films to enter the light path from the film feeding box (3) through rotation, the film discharging rotating disc (53) drives the films to enter the film discharging box (4) from the light path through rotation, a cylindrical film storage cavity (31) is arranged in the film feeding box (3), one end of the film storage cavity (31) is provided with a film feeding pushing disc (32), and the side face of the other end of the film storage cavity is communicated with the film feeding port (111), the negative plate hole (1111) on the feeding rotary plate disc (51) is rotated into the negative plate storage cavity (31), the feeding rotary plate disc (32) is connected with the end part of the negative plate storage cavity (31) through a spring so as to push the negative plate to be embedded into the negative plate hole (1111) through the spring elasticity, the feeding rotary plate disc (51) and the negative plate discharging rotary plate disc (53) are arranged in the light path, the negative plate hole (1111) is communicated with each other, a flat pushing device (52) is arranged between the projection lamp (21) and the feeding rotary plate disc (51), the flat pushing device (52) pushes the negative plate in the feeding rotary plate disc (51) into the negative plate discharging rotary plate disc (53), the flat pushing device (52) comprises a flat pushing ring (521), a flat pushing spring (522) and a blocking ring (523), the blocking ring (523) is fixed on one end of the negative plate discharging rotary plate disc (53) back to the feeding rotary plate disc (51) and is arranged coaxially with the negative plate hole (1111), the horizontal push ring (521) is arranged between the projection lamp (21) and the feeding rotary plate (51) in a sliding manner and is coaxial with the bottom plate hole (1111), one end of the horizontal push spring (522) is fixedly connected with the horizontal push ring (521), and the other end of the horizontal push spring is fixedly connected with the shell (1) so as to push the horizontal push ring (521) to move towards the feeding rotary plate (51) through elasticity, so that the bottom plate in the feeding rotary plate (51) is pushed into the discharging rotary plate (53).

2. The pointer for history teaching as claimed in claim 1, wherein: the horizontal push ring (521) comprises a ring body (5211) and two push blocks (5212), wherein the push blocks (5212) are fixed on the end face of one end, back to the horizontal push spring (522), of the horizontal push ring (521), the push blocks (5212) are plate-shaped, one side of each push block is provided with an arc edge, the straight line edge of each push block (5212) is fixedly connected with the ring body (5211), the middle part of the arc edge of each push block (5212) is upwards jacked to form a push part for pushing the bottom plate, and the push part and the end face of the ring body (5211) are gradually transited.

3. The pointer for history teaching as claimed in claim 2, wherein: go out in the film box (4) and have and be cylindric film and deposit chamber (41), the lateral wall and the play piece mouth (112) intercommunication of chamber (41) one end are deposited to the film to supply out the piece carousel (53) to take the film to go into in the film deposits chamber (41), the film is deposited chamber (41) and is equipped with out pusher (42) for a play piece mouth (112) one end, in order to deposit chamber (41) with the film in the piece carousel (53) of going out to push into the film.

4. The pointer for history teaching as claimed in claim 3, wherein: go out pusher (42) including going out push tray (421) and going out push spring (422), go out the one end that pushes out push spring (422) and the terminal surface fixed connection who goes out push tray (421), the other end and go out film box (4) fixed connection to promote in the tower through the spring and go out the film in the film carousel (53) and enter into film and deposit chamber (41).

5. The pointer for history teaching as claimed in claim 3, wherein: advance film cassette (3) one side of shell (1) dorsad and seted up piece mouth (33), one side of advancing piece pushing tray (32) is fixed with piece pole (34), piece pole (34) pass into film cassette (3) and stretch out external confession people hand and stir, advance film cassette (3) and seted up piece slide opening (35) on the position for piece pole (34), the setting that piece pole (34) can slide is in piece slide opening (35).