Day and night alternation demonstration instrument
By designing a day-night alternation demonstration device, which uses the earth's axis, a model of the earth, and boards to connect, the device simulates the movement of the sun's direct rays, solving the problem of poor demonstration effects of existing teaching aids. It achieves a clear display of day-night phenomena and facilitates inquiry activities, and is both fun and economical.
Patent Information
- Application Number
- CN202422964175.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing teaching aids for demonstrating day and night alternation lack effective tools, and self-made semicircular boards have poor demonstration effects. They cannot clearly explain the length of day and night in the Northern and Southern Hemispheres during spring, summer, autumn, and winter, as well as the polar day and polar night phenomena in the Arctic and Antarctic Circles. Furthermore, they cannot reflect the equal division of day and night throughout the year in the equatorial region.
Design a day-night alternation demonstration device, including an earth axis, a model of the earth, a mounting plate, and a base, made of wood or PVC board. By connecting the earth axis with a ring, a direct sunlight plate, the mounting plate, and the base, and combining the color markings of the first and second day-night plates, the device simulates the movement of the direct sunlight point to demonstrate the alternation of day and night and the changes in their length.
It clearly explains the phenomenon of day and night length in the Northern and Southern Hemispheres during the four seasons, reflects the polar day and polar night in the Arctic and Antarctic Circles, and demonstrates the equal day and night length in the equatorial region throughout the year. It is interesting and economical, suitable for low-cost materials, and supports a variety of research activities.
Smart Images
Figure CN223712347U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of teaching aids technology, specifically a day-night alternation demonstration device. Background Technology
[0002] Existing day-night alternation demonstration teaching aids have the following problems and shortcomings: 1. There are currently no day-night alternation demonstration devices on the market; 2. The demonstration of day-night alternation mainly relies on teacher-made semicircular boards, which have poor demonstration effects; 3. The self-made semicircular boards cannot well explain the phenomenon of day and night length changes in the Northern and Southern Hemispheres during spring, summer, autumn, and winter; 4. The self-made semicircular boards cannot well demonstrate the polar day and polar night phenomena in the Arctic and Antarctic Circles, nor can they well demonstrate the phenomenon of equal day and night throughout the year in the equatorial region. Therefore, there is an urgent need for a day-night alternation demonstration device to solve the above technical problems. Utility Model Content
[0003] The purpose of this invention is to provide a day-night alternation demonstration device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A day-night alternation demonstration device includes an earth axis, an earth model, a mounting bracket, and a base. One end of the earth axis is connected to the earth model, and the other end is connected to a ring. The ring has a connecting hole for the earth axis, with the upper hole being deeper and the lower hole being shallower. When connecting, the earth axis is first inserted into the upper hole and then into the lower hole. The top and bottom of the ring are connected to both ends of a direct sunlight plate via connecting rods. The direct sunlight plate also has a connecting hole for the ring, with the upper hole being deeper and the lower hole being shallower. When connecting, the upper hole is first inserted and then into the lower hole. Parallel rays are marked on both sides of the direct sunlight plate, and the center line of the parallel rays is marked with the direct sunlight point. A groove at the bottom of the direct sunlight plate connects to a groove at the top of the mounting bracket. The direct sunlight plate and the mounting bracket are connected to the base. A first day-night plate is connected to the base, and a second day-night plate is connected to the base.
[0006] As a preferred embodiment of this utility model, the front sides of both the first day / night plate and the second day / night plate are marked with a white day surface.
[0007] As a preferred technical solution of this utility model, the reverse side of both the first day / night plate and the second day / night plate is marked with a black night side.
[0008] As a preferred embodiment of this utility model, the line connecting the inner shaft hole of the ring forms a 23.5-degree angle with the central connecting shaft.
[0009] As a preferred embodiment of this utility model, the base is provided with eight grooves.
[0010] As a preferred embodiment of this utility model, the ring, the direct sunlight plate, the card holder, the base, the first day and night plate, and the second day and night plate are all made of wood or PVC board.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This utility model day-night alternation demonstration device is easy to assemble and disassemble and is interesting.
[0013] This utility model of a day-night alternation demonstrator can well explain the phenomenon of day and night length in the Northern and Southern Hemispheres during spring, summer, autumn, and winter; it can well demonstrate the polar day and polar night phenomena in the Arctic and Antarctic Circles; and it can well demonstrate the phenomenon of equal day and night throughout the year in the equatorial region.
[0014] This utility model day-night alternation demonstration device can be made of low-cost materials, such as wood boards and PVC boards, making it economical and practical.
[0015] This utility model of a day-night alternation demonstration device can realize research activities such as exploring the alternation of day and night, exploring the length of day and night, and exploring the terminator, and has continuity. Attached Figure Description
[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the connection of some parts of the structure of this utility model;
[0019] Figure 3 This is a top view of the base of this utility model.
[0020] Figure 4 This is a schematic diagram showing the connection between the Earth's axis and the Earth model of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the first day-night plate of this utility model;
[0022] Figure 6 This is a schematic diagram of the structure of the second day and night plate of this utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the card holder of this utility model.
[0024] In the diagram: 1. Earth axis; 2. Earth model; 3. Ring; 4. Sunlight direct plate; 5. Mounting bracket; 6. Base; 7. Sunlight direct point; 8. First day and night plate; 9. Second day and night plate; 10. Connecting rod. Detailed Implementation
[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.
[0026] Please see Figure 1-7 A day-night alternation demonstration device includes an earth axis 1, an earth model 2, a mounting base 5, and a base 6. One end of the earth axis 1 is connected to the earth model 2, and the other end of the earth axis 1 is connected to a ring 3. The ring 3 has an earth axis connection hole, with the upper hole being deeper and the lower hole being shallower. When connecting, the earth axis 1 is first inserted into the upper hole and then into the lower hole. The top and bottom of the ring 3 are connected to both ends of a direct sunlight plate 4 via connecting rods 10. The direct sunlight plate 4 has a ring connection hole, with the upper hole being deeper and the lower hole being shallower. When connecting, the upper hole is first inserted and then into the lower hole. Parallel rays are marked on both sides of the direct sunlight plate 4, and the center line of the parallel rays is marked with the direct sunlight point 7. The groove at the bottom of the direct sunlight plate 4 is connected to the groove at the top of the mounting base 5. The direct sunlight plate 4 and the mounting base 5 are connected to the base 6. The first day-night plate 8 is connected to the base 6, and the second day-night plate 9 is connected to the base 6.
[0027] The front of both the first day and night plate 8 and the second day and night plate 9 is marked with a white day side.
[0028] The reverse sides of the first day and night panel 8 and the second day and night panel 9 are both marked with a black "night" side.
[0029] Among them, the line connecting the inner shaft hole of the ring 3 forms an angle of 23.5 degrees with the central connecting shaft.
[0030] The base 6 has eight grooves.
[0031] Among them, the ring 3, the direct sunlight plate 4, the card holder 5, the base 6, the first day and night plate 8, and the second day and night plate 9 are all made of wood or PVC board.
[0032] The working principle and usage process of this utility model: Connect the day-night alternation demonstration device as described above, and rotate the annular plane and the direct sunlight plate plane to the same plane as follows. Figure 1Aligning the pen or laser pointer (which can switch between spotlight and line light) with the ray of sunlight directly overhead, and rotating the sphere, you can observe: On the winter solstice, the sun's direct rays are at the Tropic of Capricorn, the Arctic Circle experiences polar night, and the Antarctic Circle experiences polar day; in the Northern Hemisphere, days are shorter than nights, and in the Southern Hemisphere, days are longer than nights. Rotating the ring clockwise until its plane aligns with the day / night plate plane, and aligning the pen or laser pointer (which can switch between spotlight and line light) with the ray of sunlight directly overhead, and rotating the sphere, you can observe: On the spring equinox, the sun's direct rays are at the equator, and day and night are of equal length globally. Continuing to rotate the ring clockwise until its plane aligns with the day / night plate plane... Rotate the sun's direct rays to the same plane as the sun's direct rays. Align the pen or laser pointer (which can switch between spot and line light) with the light from the sun's direct rays and rotate the sphere. You can observe that: on the summer solstice, the sun's direct rays are at the Tropic of Cancer, the Arctic Circle experiences polar day, and the Antarctic Circle experiences polar night. In the Northern Hemisphere, the days are longer than the nights, while in the Southern Hemisphere, the days are shorter than the nights. Then, rotate the ring clockwise to align its plane with the day / night plate plane. Align the pen or laser pointer (which can switch between spot and line light) with the light from the sun's direct rays and rotate the sphere. You can observe that: on the autumnal equinox, the sun's direct rays are at the equator, and day and night are of equal length globally.
[0033] This day-night alternation demonstrator is easy to assemble and disassemble, and is quite interesting. It effectively explains the differences in day and night lengths in the Northern and Southern Hemispheres during spring, summer, autumn, and winter; it clearly demonstrates the polar day and polar night phenomena in the Arctic and Antarctic Circles; and it effectively demonstrates the year-round equal day and night in the equatorial region. This demonstrator can be made with low-cost materials such as wood or PVC boards, making it economical and practical. It allows for continuous exploration of day-night alternation, day and night length, and the terminator (the line between dawn and dusk). Content not described in detail in this manual is existing technology known to those skilled in the art.
[0034] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A day-night alternation demonstration device, comprising an earth axis (1), an earth model (2), a mounting bracket (5), and a base (6), characterized in that: One end of the earth axis (1) is connected to the earth model (2), and the other end of the earth axis (1) is connected to the ring (3). The ring (3) has an earth axis connection hole, with the upper hole being deeper and the lower hole being shallower. When connecting, the earth axis (1) is first inserted into the upper hole and then into the lower hole. The top and bottom of the ring (3) are connected to the two ends of the direct sunlight plate (4) through the connecting rod (10). The direct sunlight plate (4) has a ring connection hole, with the upper hole being deeper and the lower hole being shallower. When connecting, the upper hole is first inserted and then into the lower hole. The direct sunlight plate (4) is marked with parallel rays on both the front and back. The center line of the parallel rays is marked with the direct sunlight point (7). The groove at the bottom of the direct sunlight plate (4) is connected to the groove at the top of the card holder (5). The direct sunlight plate (4) and the card holder (5) are connected to the base (6). The first day and night plate (8) is connected to the base (6), and the second day and night plate (9) is connected to the base (6).
2. The day-night alternation demonstration device according to claim 1, characterized in that: The front of both the first day and night plate (8) and the second day and night plate (9) is marked with a white day surface.
3. The day-night alternation demonstration device according to claim 1, characterized in that: The reverse side of the first day / night plate (8) and the second day / night plate (9) is black and marked with a night side.
4. The day-night alternation demonstration device according to claim 1, characterized in that: The line connecting the inner shaft hole of the ring (3) forms a 23.5-degree angle with the central connecting shaft.
5. The day-night alternation demonstration device according to claim 1, characterized in that: The base (6) has eight grooves.
6. The day-night alternation demonstration device according to claim 1, characterized in that: The ring (3), the direct sunlight plate (4), the card holder (5), the base (6), the first day and night plate (8), and the second day and night plate (9) are all made of wood or PVC board.