CN211237156U

CN211237156U - Projection arrangement is used in high school student's study

Info

Publication number: CN211237156U
Application number: CN201920570865.XU
Authority: CN
Inventors: 秦添
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-08-11
Anticipated expiration: 2029-04-25

Abstract

The utility model belongs to the technical field of the teaching aid technique and specifically relates to a projection arrangement is used in high school student's study, which comprises a housin, the fixed light source that is equipped with in bottom of casing, the top of light source is fixed with condensing lens and fresnel lens in proper order, fresnel lens's top is equipped with folding projection mechanism, the casing is uncovered structure, the casing is located the adjacent one side of projection mechanism and is equipped with the notch, the both sides top of notch is all fixed and is equipped with the fixture block, all be equipped with the draw-in groove on the fixture block, be equipped with the fixed axle between two fixture blocks, the joint is in the draw-in groove of fixture block respectively at the both ends of fixed axle, it is equipped with a plurality of solid fixed rings to rotate the. The utility model discloses make things convenient for the mr to prepare lessons, can easily accomplish the projection of a large amount of courseware to removable courseware board makes things convenient for the mr to the interim modification of courseware, and overall structure is simple, facilitates the use, effectively improves teaching efficiency, is worth promoting.

Description

Projection arrangement is used in high school student's study

Technical Field

The utility model relates to a teaching aid technical field especially relates to a projection arrangement is used in high school student's study.

Background

At present high school's teaching uses the projecting apparatus to carry out classroom teaching is a very efficient teaching mode, also is an important means that improves teaching efficiency, the work load of mr during the classroom has been alleviateed simultaneously, although electronic projector is comparatively popular now, but to traditional teaching mode, use optical projector, more accord with the projection of handwriting courseware, and can be clearer show optical projection and obtain the process, and make things convenient for mr's timely modification and painting, but the loading board of traditional projecting apparatus is the polylith, inconvenient mr prepares lessons, and it is comparatively trouble to change the loading board to the projection. Therefore, we propose a projection apparatus for high school students.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a projection device for high school students.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a projection device for high school students is designed, which comprises a shell, a light source is fixedly arranged at the bottom of the shell, a condenser lens and a Fresnel lens are sequentially fixed above the light source, a foldable projection mechanism is arranged above the Fresnel lens, a heat radiation fan is fixed on one side of the shell, the heat radiation fan and the light source are connected on a power line, the shell is of an open structure, a notch is formed in one side, adjacent to the projection mechanism, of the shell, clamping blocks are fixedly arranged at the tops of two sides of the notch, clamping grooves are formed in the clamping blocks, a fixed shaft is arranged between the two clamping blocks, two ends of the fixed shaft are respectively clamped in the clamping grooves of the clamping blocks, the fixing shaft is rotatably sleeved with a plurality of fixing rings, the fixing rings penetrate through the through holes, the through holes are formed in the courseware plates with transparent structures, and blocking pieces are fixedly arranged on the edges, away from the fixing rings, of the opening of the shell; the projection mechanism comprises a supporting rod, the supporting rod is connected to the side portion of the shell in a rotating mode through a first limiting rotating shaft, one end, far away from the shell, of the supporting rod is connected with a fixing plate in a rotating mode through a second limiting rotating shaft, a reflector is arranged on one side, located on the supporting rod, of the fixing plate through a third limiting rotating shaft, a convex lens is arranged below the reflector, and the convex lens penetrates through and is fixed on the fixing plate.

Preferably, the condenser lens and the Fresnel lens are provided with connecting bolts on one side away from the first limiting rotating shaft, and the shell is provided with vertical downward strip-shaped grooves corresponding to the connecting bolts in position and size, the connecting bolts are arranged in the strip-shaped grooves, and each connecting bolt is provided with a locking nut.

Preferably, the courseware plate is a transparent plastic plate.

Preferably, the size of the courseware plate is smaller than the size of the opening of the shell and larger than the size of the inner diameter of the baffle plate.

Preferably, the blocking piece is a soft rubber piece.

Preferably, the shell is further provided with a cover plate matched with the opening.

Preferably, the support rod comprises a connecting rod and a sleeve, the connecting rod is arranged in the sleeve, a locking bolt capable of modulating the connecting rod to a preset height is arranged on the sleeve, the sleeve is connected with the first limiting rotating shaft, and the connecting rod is connected with the second limiting rotating shaft.

The utility model provides a pair of projection arrangement is used in high school student's study, beneficial effect lies in: the utility model discloses a casing one side sets up detachable courseware board, makes things convenient for the mr to prepare lessons to the courseware board is many page structures, rotates to be connected on the fixed axle, when teaching, only needs to change the courseware board, alright easily accomplish the projection of a large amount of courseware, and detachable courseware board makes things convenient for the mr to the interim modification of courseware, and overall structure is simple, facilitates the use, effectively improves teaching efficiency.

Drawings

Fig. 1 is a schematic perspective view of a projection apparatus for high school students according to the present invention;

fig. 2 is a schematic side view of the projection apparatus for high school students according to the present invention.

In the figure: the device comprises a shell 1, a cover plate 2, a notch 3, a fixture block 4, a fixed shaft 5, a courseware plate 6, a first limit rotating shaft 7, a support rod 8, a second limit rotating shaft 9, a fixed plate 10, a convex lens 11, a reflective mirror 12, a baffle 13, a light source 14, a condenser 15, a Fresnel lens 16, a cooling fan 17, a third limit rotating shaft 18, a connecting rod 19, a sleeve 20, a locking bolt 21, a strip-shaped groove 22, a locking nut 23, a connecting bolt 24, a through hole 25 and a fixing ring 26.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a projection device for high school student study, including casing 1, the fixed light source 14 that is equipped with in bottom of casing 1, light source 14 adopts the bromine tungsten lamp, and the bottom of light source 14 is equipped with the reflector, condenser 15 and fresnel lens 16 are fixed in proper order to the top of light source 14, fresnel lens 16's top is equipped with folding projection mechanism, one side of casing 1 is fixed with radiator fan 17, radiator fan 17 and light source 14 are connected on the power cord, radiator fan 17 can effectively dispel the heat that light source 14 produced, avoid casing 1 too high temperature to cause the damage to condenser 15 and fresnel lens 16.

The projection mechanism comprises a supporting rod 8, the supporting rod 8 is rotatably connected to the side portion of the shell 1 through a first limiting rotating shaft 7, one end, far away from the shell 1, of the supporting rod 8 is rotatably connected with a fixing plate 10 through a second limiting rotating shaft 9, one side, located on the supporting rod 8, of the fixing plate 10 is provided with a reflector 12 through a third limiting rotating shaft 18, the lower portion of the reflector 12 is provided with a convex lens 11, the convex lens 11 is fixedly arranged on the fixing plate 10 in a penetrating mode, the projection mechanism can be folded into the shell 1 through the first limiting rotating shaft 7, carrying of the projection device for high school students is facilitated, occupied space is reduced, the first limiting rotating shaft 7 and the second limiting rotating shaft 9 are matched for use, the imaging angle of the projection mechanism can be well adjusted, the first limiting rotating shaft 7, the second limiting rotating shaft 9 and the third limiting rotating shaft 18 are 270.

The support rod 8 comprises a connecting rod 19 and a sleeve 20, the connecting rod 19 is arranged inside the sleeve 20, a locking bolt 21 capable of modulating the connecting rod 19 to a preset height is arranged on the sleeve 20, the sleeve 20 is connected with the first limiting rotating shaft 7, and the connecting rod 19 is connected with the second limiting rotating shaft 9. The connecting rod 19 can be extended and contracted in the sleeve 20, and the height of the convex lens 11 can be adjusted.

The shell 1 is of an open structure, the shell 1 is also provided with a cover plate 2 matched with the open, the cover plate 2 can be placed at the top of the shell 1 or at the bottom of the shell, the cover plate 2 can seal the open of the shell 1 when not in use, one side of the shell 1 adjacent to the projection mechanism is provided with a notch 3, the tops of two sides of the notch 3 are respectively fixedly provided with a clamping block 4, the clamping blocks 4 are respectively provided with a clamping groove, a fixing shaft 5 is arranged between the two clamping blocks 4, two ends of the fixing shaft 5 are respectively clamped in the clamping grooves of the clamping blocks 4, the fixing shaft 5 is rotatably sleeved with a plurality of fixing rings 26, the fixing rings 26 are penetrated in through holes 25, the through holes 25 are arranged on a plurality of courseware plates 6 of transparent structures, the courseware plates 6 are mutually overlapped to form a device which can be turned like a book, when projection is needed, the coursew, because the two ends of the fixed shaft 5 are located in the clamping grooves, the courseware plates 6 can be detached from the notches 3, a teacher can prepare lessons conveniently, and during teaching, the courseware plates 6 only need to be replaced in a page turning mode, and then projection of a large number of courseware can be finished easily.

The uncovered edge of keeping away from solid fixed ring of casing 1 is fixed and is equipped with separation blade 13, separation blade 13 is soft rubber piece, in the use of reality, the length of courseware board 6 should be less than the inside length of casing 1, make upset courseware board 6 can take on separation blade 13 or its edge, after the courseware teaching is ended on courseware board 6, push down the separation blade 13 that lets of courseware board 6 and warp, make courseware board 6 cross separation blade 13 and arrange the inside of casing 1 in, courseware board 6 can paste on the inner wall of casing 1, then go up on the separation blade 13 with new courseware board 6 and continue the projection teaching, so make things convenient for mr's teaching extremely, effectively alleviate mr's work load in the classroom, and removable courseware board 6 makes things convenient for mr to the interim modification of courseware, moreover, the integrated structure is simple, and convenient to use, and the teaching efficiency is effectively improved.

The utility model discloses in, one side that first spacing pivot 7 was kept away from to condensing lens 15, fresnel lens 16 all is equipped with connecting bolt 24 to set up vertical downward and the bar groove 22 that the position size all corresponds with connecting bolt 24 on casing 1, inside bar groove 22 was all arranged in to connecting bolt 24 to be equipped with lock nut 23 on every connecting bolt 24, just so can adjust the distance between condensing lens 15, fresnel lens 16 and the light source, thereby find perhaps can be better demonstration projected process.

Utility model's projection process does, and the light that light source 14 sent loops through condensing lens 15, fresnel lens 16, and on rethread courseware board 6, the pattern of courseware board 6 passes through convex lens 11, reflects through reflector 12 again, just can throw on wall body or screen.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The projection device for high school student learning comprises a shell (1), wherein a light source (14) is fixedly arranged at the bottom of the shell (1), a condenser lens (15) and a Fresnel lens (16) are sequentially fixed above the light source (14), a foldable projection mechanism is arranged above the Fresnel lens (16), a heat dissipation fan (17) is fixed on one side of the shell (1), the heat dissipation fan (17) and the light source (14) are connected to a power line, the projection device is characterized in that the shell (1) is of an open structure, a notch (3) is formed in one side, adjacent to the projection mechanism, of the shell (1), clamping blocks (4) are fixedly arranged at the tops of two sides of the notch (3), clamping grooves are formed in the clamping blocks (4), a fixing shaft (5) is arranged between the two clamping blocks (4), and two ends of the fixing shaft (5) are respectively clamped in the clamping grooves of the clamping blocks (4), the fixed shaft (5) is rotatably sleeved with a plurality of fixing rings (26), the fixing rings (26) penetrate through the through holes (25), the through holes (25) are formed in the courseware plates (6) of a plurality of transparent structures, and blocking pieces (13) are fixedly arranged on the edges, away from the fixing rings, of the opening of the shell (1);

the projection mechanism comprises a supporting rod (8), the supporting rod (8) is rotatably connected to the side portion of the shell (1) through a first limiting rotating shaft (7), one end, far away from the shell (1), of the supporting rod (8) is rotatably connected with a fixing plate (10) through a second limiting rotating shaft (9), one side, located on the supporting rod (8), of the fixing plate (10) is provided with a reflector (12) through a third limiting rotating shaft (18), a convex lens (11) is arranged below the reflector (12), and the convex lens (11) is fixedly arranged on the fixing plate (10) in a penetrating mode.

2. The high school student learning projection device according to claim 1, wherein the condenser (15) and the fresnel lens (16) are provided with connecting bolts (24) at the sides away from the first limit rotating shaft (7), a vertical and downward strip-shaped groove (22) corresponding to the connecting bolts (24) in position and size is formed in the housing (1), the connecting bolts (24) are arranged in the strip-shaped groove (22), and each connecting bolt (24) is provided with a locking nut (23).

3. A high school student's projection apparatus as claimed in claim 1, wherein the courseware (6) is a transparent plastic sheet.

4. A high school student's projection apparatus as claimed in claim 1, wherein the size of the courseware (6) is smaller than the size of the opening of the housing (1) and larger than the inner diameter of the baffle (13).

5. A projection apparatus for high school student's study according to claim 1 wherein said blocking piece (13) is a soft rubber piece.

6. A projection device for high school students' study according to claim 1, wherein said housing (1) is further provided with a cover plate (2) matching with the opening.

7. The projection device for high school student learning according to claim 1, wherein the support rod (8) comprises a connecting rod (19) and a sleeve (20), the connecting rod (19) is disposed inside the sleeve (20), a locking bolt (21) capable of adjusting the connecting rod (19) to a preset height is disposed on the sleeve (20), the sleeve (20) is connected to the first limit rotating shaft (7), and the connecting rod (19) is connected to the second limit rotating shaft (9).