Science popularization display device based on light and shadow conversion

Abstract

The utility model relates to the technical field of science popularization display, and discloses a science popularization display device based on light and shadow conversion, which comprises a bottom plate, a vertical projection plate fixedly mounted at the leftmost end of the top of the bottom plate, a notch formed in the right end of the top of the bottom plate, a moving block movably mounted in the notch, and a supporting rod fixedly mounted at the top of the moving block. The top end of the supporting rod is fixedly provided with a projection lamp facing the projection plate, one end of the moving block is provided with a left-right through screw hole, the right end of the bottom plate is fixedly provided with a second motor, the output end of the second motor is fixedly provided with a screw rod extending into the notch, and the screw rod is inserted into the screw hole in the moving block in a threaded mode. The first motor is operated to enable the object placing plate to rotate, and the projection lamp can be driven to move left and right in cooperation with operation of the second motor, so that an object on the object placing plate can be irradiated at different angles and different distances, and the shadow of the object projected to the curtain presents various shapes.

Description

Technical Field

[0001] The utility model belongs to the technical field of popular science display, in particular to a popular science display device based on light and shadow conversion. Background Art

[0002] Today's society pays more and more attention to popular science education for the general public. Science and technology museums in various places are not only open to the public free of charge, but also constantly launch various novel popular science devices, trying to use various vivid and interesting cases to let everyone feel the magic of physical phenomena and learn basic physics knowledge at the same time. Optical phenomenon is a common and complex physical phenomenon. In particular, parallel perspective and angular perspective of three-dimensional images are still difficult for many people to understand. Three-dimensional Chinese characters are three-dimensional Chinese characters composed of multiple structures spliced ​​at different heights in different planes. In this way, different Chinese characters can be seen from different angles. When displaying the three-dimensional Chinese characters, the Chinese characters seen from different angles can be clearly presented through light and shadow conversion. However, when using common light and shadow conversion devices, it is impossible to adjust the distance between the light and the object, and the object needs to be adjusted manually. For this reason, the present application proposes a popular science display device based on light and shadow conversion. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a science popularization display device based on light and shadow conversion, comprising a bottom plate, a vertical projection board is fixedly installed at the leftmost end of the top of the bottom plate, a notch is opened at the right end of the top of the bottom plate, a moving block is movably installed in the notch, a support rod is fixedly installed on the top of the moving block, a projection lamp facing the projection board is fixedly installed on the top of the support rod, a screw hole passing through left and right is opened at one end of the moving block, a second motor is fixedly installed at the right end of the bottom plate, a screw extending into the notch is fixedly installed at the output end of the second motor, the screw thread is inserted into the screw hole on the moving block, a bottom groove is opened at the bottom of the bottom plate, a through opening connected to the bottom groove is opened at the top of the bottom plate and located between the notch and the projection board, a fixed tube is fixed and inserted through the through opening, a rotatable rotating rod is inserted through the fixed tube, a storage plate is fixedly installed at the top of the rotating rod, and a curtain is fixedly installed on the side of the projection plate close to the storage plate.

[0004] Furthermore, first bearings are fixedly installed at both ends of the inner wall of the fixed tube, the rotating rod is fixed and inserted between the inner ring walls of the two first bearings, the first gear is fixedly installed at the bottom end of the rotating rod, the first motor is fixedly installed at the top of the inner wall of the bottom groove, and the second gear is fixedly installed at the output end of the first motor, and the side wall of the second gear is meshingly connected with the side wall of the first gear.

[0005] Furthermore, a groove is formed at one end of the notch away from the second motor, a second bearing is fixedly installed in the groove, and one end of the screw rod passing through the screw hole is fixedly connected to the inner ring wall of the second bearing.

[0006] Furthermore, two sliding grooves are opened on both sides of the inner wall of the slot, and semicircular grooves are opened at the four corners on both sides of the moving block. A rotatable limiting ball is arranged in each semicircular groove, and the part of each limiting ball extending out of the semicircular groove is respectively located in the corresponding sliding grooves on both sides of the inner wall of the slot and can roll inside them.

[0007] Furthermore, the position of the projection light is higher than the horizontal height of the storage plate.

[0008] Furthermore, the first gear and the second gear are both located in the bottom groove at the bottom of the bottom plate.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The placement plate is rotated by operating the first motor, and the projection lamp can be driven to move left and right by operating the second motor, so that the object on the placement plate can be illuminated at different angles and distances, so that the shadow of the object projected on the screen presents various shapes, so that the viewer can see different light and shadow effects projected by the same object. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of a partial section of the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection between the rotating rod and the fixed pipe of the utility model;

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of a part of the bottom plate of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the mobile block of the utility model;

[0017] In the figure: 1, bottom plate; 2, projection board; 3, screen; 4, bottom groove; 5, fixing tube; 6, rotating rod; 7, storage plate; 8, first gear; 9, first motor; 10, second gear; 11, first bearing; 12, notch; 13, moving block; 14, support rod; 15, projection lamp; 16, second motor; 17, screw; 18, second bearing; 19, slide groove; 20, limit ball; 21, screw hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Depend on Figure 1-5 The utility model includes a bottom plate 1, a vertical projection board 2 is fixedly installed at the leftmost end of the top of the bottom plate 1, a notch 12 is opened at the right end of the top of the bottom plate 1, a moving block 13 is movably installed in the notch 12, a support rod 14 is fixedly installed on the top of the moving block 13, a projection lamp 15 facing the projection board 2 is fixedly installed on the top of the support rod 14, a screw hole 21 passing through the left and right is opened at one end of the moving block 13, a second motor 16 is fixedly installed at the right end of the bottom plate 1, a screw rod 17 extending into the notch 12 is fixedly installed at the output end of the second motor 16, and the screw rod 17 is threadedly inserted into the screw hole 21 on the moving block 13, a bottom groove 4 is opened at the bottom of the bottom plate 1, and a bottom groove 4 is opened at the top of the bottom plate 1 and between the notch 12 and the projection board 2. A through opening connected to the bottom groove 4 is opened at the position, a fixed tube 5 is fixed and inserted through the through opening, a rotatable rotating rod 6 is inserted through the fixed tube 5, a storage plate 7 is fixedly installed on the top of the rotating rod 6, and a screen 3 is fixedly installed on the side of the projection board 2 close to the storage plate 7. By running the second motor 16, it drives the screw 17 and the screw hole 21 on the moving block 13 to rotate threadedly, so that the moving block 13 can be driven to move left and right in the slot 12. The displacement of the moving block 13 can drive the support rod 14 and the projection lamp 15 on its top to move position, thereby changing the distance between the projection lamp 15 and the object, so that the size of the shadow projected by the object on the screen 3 will change, which is convenient for viewers to watch more clearly.

[0020] At the same time, first bearings 11 are fixedly installed at both ends of the inner wall of the fixed tube 5, the rotating rod 6 is fixed and inserted between the inner ring walls of the two first bearings 11, the first gear 8 is fixedly installed at the bottom end of the rotating rod 6, the first motor 9 is fixedly installed at the top of the inner wall of the bottom groove 4, and the second gear 10 is fixedly installed at the output end of the first motor 9. The side wall of the second gear 10 is meshed with the side wall of the first gear 8. The position of the rotating rod 6 can be fixed by the first bearing 11 in the fixed tube 5. By running the first motor 9, the second gear 10 at its output end is driven to rotate, and the second gear 10 drives the first gear 8 meshed with it to rotate, thereby driving the rotating rod 6 and the storage plate 7 to rotate, and then the angle at which the object on the storage plate 7 is illuminated by the projection light 15 can be adjusted.

[0021] In addition, a groove is formed at one end of the slot 12 away from the second motor 16, in which a second bearing 18 is fixedly installed. One end of the screw 17 passes through the screw hole 21 and is fixedly connected to the inner wall of the second bearing 18. The second bearing 18 can be used to fix one end of the screw 17 in position, making it more stable when rotating.

[0022] In addition, two slide grooves 19 are provided on both sides of the inner wall of the slot 12, and semicircular grooves are provided at the four corners on both sides of the moving block 13. A rotatable limiting ball 20 is provided in each semicircular groove. The part of each limiting ball 20 extending out of the semicircular groove is respectively located in the corresponding slide grooves 19 on both sides of the inner wall of the slot 12 and can roll therein. Through the multiple limiting balls 20 on both sides of the moving block 13, it is possible to avoid contact between the two sides of the moving block 13 and the inner wall of the slot 12, so that the moving block 13 can be moved in the slot 12 more labor-saving, and the moving block 13 can always remain in a horizontal state.

[0023] Furthermore, the position of the projection lamp 15 is higher than the horizontal height of the storage plate 7 , so that the light generated by the projection lamp 15 can normally illuminate the object placed on the top of the storage plate 7 .

[0024] Furthermore, the first gear 8 and the second gear 10 are both located in the bottom groove 4 at the bottom of the bottom plate 1 .

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, object or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, object or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A popular science display device based on light and shadow conversion, comprising a bottom plate (1), characterized in that: A vertical projection board (2) is fixedly mounted at the leftmost end of the top of the bottom plate (1), a notch (12) is provided at the right end of the top of the bottom plate (1), a moving block (13) is movably mounted in the notch (12), a support rod (14) is fixedly mounted on the top of the moving block (13), a projection lamp (15) facing the projection board (2) is fixedly mounted on the top of the support rod (14), a screw hole (21) passing through the left and right is provided at one end of the moving block (13), a second motor (16) is fixedly mounted at the right end of the bottom plate (1), and a motor (16) extending to the notch (12) is fixedly mounted at the output end of the second motor (16). The invention relates to a screw rod (17) in a movable block (12), wherein the screw rod (17) is threadedly inserted into a screw hole (21) on the movable block (13); a bottom groove (4) is provided at the bottom of the bottom plate (1); a through opening connected to the bottom groove (4) is provided at the top of the bottom plate (1) and between the groove (12) and the projection plate (2); a fixed pipe (5) is fixed and inserted through the through opening; a rotatable rotating rod (6) is inserted through the fixed pipe (5); a storage plate (7) is fixedly installed at the top end of the rotating rod (6); and a screen (3) is fixedly installed on the side of the projection plate (2) close to the storage plate (7).

2. A popular science display device based on light and shadow conversion according to claim 1, characterized in that: First bearings (11) are fixedly mounted on both ends of the inner wall of the fixed tube (5); the rotating rod (6) is fixed and inserted between the inner ring walls of the two first bearings (11); a first gear (8) is fixedly mounted on the bottom end of the rotating rod (6); a first motor (9) is fixedly mounted on the top of the inner wall of the bottom groove (4); a second gear (10) is fixedly mounted on the output end of the first motor (9); and a side wall of the second gear (10) is meshingly connected with a side wall of the first gear (8).

3. The popular science display device based on light and shadow conversion according to claim 1, characterized in that: A groove is formed at one end of the notch (12) away from the second motor (16), in which a second bearing (18) is fixedly installed. One end of the screw rod (17) passes through the screw hole (21) and is fixedly connected to the inner wall of the second bearing (18).

4. The popular science display device based on light and shadow conversion according to claim 1, characterized in that: Two slide grooves (19) are provided on both sides of the inner wall of the slot (12), and semicircular grooves are provided at four corners on both sides of the moving block (13). A rotatable limiting ball (20) is provided in each semicircular groove, and the part of each limiting ball (20) extending out of the semicircular groove is respectively located in the corresponding slide grooves (19) on both sides of the inner wall of the slot (12) and can roll therein.

5. The popular science display device based on light and shadow conversion according to claim 1, characterized in that: The position of the projection lamp (15) is higher than the horizontal height of the storage plate (7).

6. The popular science display device based on light and shadow conversion according to claim 2, characterized in that: The first gear (8) and the second gear (10) are both located in the bottom groove (4) at the bottom of the bottom plate (1).

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