Plane demonstration instrument for day and night length change
By designing a planar demonstration device for the changes in day and night length, students can conduct hands-on experiments to simulate the Earth's revolution and the changes in the sun's direct point, solving the problem of teachers having difficulty in conducting experimental demonstrations, enhancing their learning interest, and making it easy to operate and store information.
Patent Information
- Application Number
- CN202422602823.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In existing technologies, it is difficult for teachers to demonstrate the changes in the sun's direct point and the length of day and night through experiments in the classroom. Students find it difficult to learn, and the 3D demonstration components are large and inconvenient to operate.
Design a planar demonstrator of day and night length changes, including component one and component two. Component two rotates within the circular slot of component one to simulate the Earth's revolution and the change of the sun's direct point. Combined with lenses and simulated light rays, the changes of day and night are displayed.
Students can conduct hands-on experiments, which enhances their learning interest, reduces the difficulty of learning, and is easy to operate and store, solving the problems of large size and inconvenient operation of 3D demonstration components.
Smart Images
Figure CN223566238U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to teaching demonstration appliance technical field, concretely is a day and night length change plane demonstration appearance. BACKGROUND
[0002] The day and night length change three -dimensional demonstration appearance shows the change condition of day and night length of different seasons, different latitude area through simulating the rotation of the earth and revolution and the movement of sun direct point.
[0003] For many years, the teacher on the classroom for the sun direct point and the explanation of day and night length change generally utilizes the video or 3D animation, rarely presents in the experimental way, and the student needs to use the spatial imagination ability in the learning process, so it is difficult to learn. In addition, the demonstration assembly about the sun direct point and the day and night length change is mostly three-dimensional, and the volume is large, which is inconvenient for students to operate, take and store. UTILITY MODEL CONTENT
[0004] (I) technical problem solved
[0005] In view of the deficiency of prior art, the utility model provides a day and night length change plane demonstration appearance, which can let students really do experiments in the classroom, and teachers and students can solve the problem of the sun direct point and the change of day and night length by relying on the so-called spatial imagination ability, which can greatly improve the interest of students in learning the content, reduce the difficulty of learning related knowledge, and facilitate operation, taking and storing. The utility model solves the problem that for many years, the teacher on the classroom for the sun direct point and the explanation of day and night length change generally utilizes the video or 3D animation, rarely presents in the experimental way, and the student needs to use the spatial imagination ability in the learning process, so it is difficult to learn. In addition, the demonstration assembly about the sun direct point and the day and night length change is mostly three-dimensional, and the volume is large, which is inconvenient for students to operate, take and store.
[0006] (II) technical scheme
[0007] In order to achieve the above-mentioned purpose that students can really do experiments in the classroom, teachers and students can solve the problem of the sun direct point and the change of day and night length by relying on the so-called spatial imagination ability, which can greatly improve the interest of students in learning the content, reduce the difficulty of learning related knowledge, and facilitate operation, taking and storing, the utility model provides the following technical scheme: a day and night length change plane demonstration appearance, comprising component one and component two, the component one is composed of a circular plate and a side plate, the circular plate is provided with a circular notch, the night hemisphere lens and the day hemisphere lens are arranged in the circular notch, the side plate is located on the side of the day hemisphere lens, the side plate is provided with a light ray for simulating sunlight irradiating the earth, the circular notch bottom is embedded with component two, and the component two can rotate in the circular notch.
[0008] Preferably, the nocturnal hemisphere lens and the diurnal hemisphere lens are installed on the upper layer inside the circular slot, and the upper surfaces of the nocturnal hemisphere lens and the diurnal hemisphere lens are flush with the upper surface of the assembly one.
[0009] Preferably, the thickness of the nocturnal hemisphere lens and the diurnal hemisphere lens is half of the depth of the circular slot.
[0010] Preferably, the assembly two comprises a circular plate, the diameter of the circular plate is equal to the diameter of the circular slot, the thickness of the circular plate is equal to half of the depth of the circular slot, and the lower surface of the circular plate is flush with the lower surface of the assembly one when the circular plate is embedded in the bottom of the circular slot.
[0011] Preferably, the two ends of the diameter of the circular plate extend with the turning bars.
[0012] Preferably, the position where the bottom circular plate and the side plate of the assembly one contact each other is provided with the accommodation slot, and the turning bars are located in the accommodation slot when the circular plate is embedded in the circular slot.
[0013] Preferably, the two sides of the accommodation slot extend through the center of the circular slot, and the included angle between the two sides of the accommodation slot is 47°.
[0014] Preferably, the length between the two ends of the two turning bars is greater than the diameter of the circular plate.
[0015] Preferably, the circular plate is marked with equator, tropic of Cancer and tropic of Capricorn indication lines.
[0016] (Three) beneficial effects
[0017] Compared with the prior art, the utility model provides a day and night length change plane demonstration appearance, has the following beneficial effects:
[0018] The diurnal length change plane demonstration instrument, through the mutual cooperation of component one and component two, firstly component one is taken out, students identify the equator, the south and north return lines, the south and north polar circles on component one, then component two is taken out, students identify the night hemisphere, the day hemisphere, the sun light direct point on component two, after the students finish identifying, the circular plate with the mark of component two is embedded from the bottom of the circular slot of component one, component one and component two are assembled together, according to the law of the earth revolution movement, the dialing bar is dialled, the direct point of the light line is aligned in turn, the north return line, the equator, the south return line, the equator, the north return line, and the length of the latitude of the part of the day hemisphere and the night hemisphere is observed, so that students can really do the experiment in the classroom, the teacher and the students can solve the problem of the sun direct point and the diurnal length change not only by the so-called space imagination ability, the interest of the students in learning the content can be greatly improved, the difficulty of learning the related knowledge is reduced, and the effect of convenient operation, taking, storage is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structure schematic view of the diurnal length change plane demonstration instrument of the utility model;
[0020] Figure 2 It is a structure schematic view of component one of the diurnal length change plane demonstration instrument of the utility model Figure I ;
[0021] Figure 3 It is a structure schematic view of component one of the diurnal length change plane demonstration instrument of the utility model Figure II ;
[0022] Figure 4 It is a structure schematic view of component two of the diurnal length change plane demonstration instrument of the utility model;
[0023] Figure 5 It is a schematic view of each mark on component two of the diurnal length change plane demonstration instrument of the utility model;
[0024] Figure 6 It is a schematic view of each mark on component one of the diurnal length change plane demonstration instrument of the utility model.
[0025] In the drawing:
[0026] 1, component one, 11, night hemisphere lens, 12, day hemisphere lens, 13, circular slot, 14, side plate, 15, light line, 16, let go slot, 17, circular plate,
[0027] 2, component two, 21, circular plate, 22, dialing bar. DETAILED DESCRIPTION
[0028] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, apparently, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0029] Please refer to Figures 1-6 A day and night length change plane demonstration instrument, including component one 1 and component two 2, component one 1 is formed by round plate 17 and side plate 14, round plate 17 is provided with circular slot 13, component two 2 is embedded in the bottom of circular slot 13, and component two 2 can rotate inside circular slot 13. The round plate 17 on component one 1 is used as the main part of the demonstration instrument, and is provided with circular slot 13 for embedding and limiting component two 2. Night hemisphere lens 11 and day hemisphere lens 12 are arranged in circular slot 13, the upper half of circular slot 13 is used for installing night hemisphere lens 11 and day hemisphere lens 12, and the lower half of circular slot 13 is used as the track for the rotation of component two 2. Side plate 14 is located on the side of day hemisphere lens 12, and is provided with light ray 15 for simulating sunlight irradiation on the earth. Side plate 14 is located on the side of day hemisphere lens 12 and is integrally formed with round plate 17, and is provided with light ray 15 for simulating sunlight irradiation on the earth. Component one 1 and component two 2 can be manufactured by 3D printing technology. After the combination of component one 1 and component two 2, the whole is flat, and it is easy to store and take.
[0030] Night hemisphere lens 11 and day hemisphere lens 12 are installed in the upper layer inside circular slot 13, and the upper surfaces of night hemisphere lens 11 and day hemisphere lens 12 are flush with the upper surface of component one 1. Night hemisphere lens 11 and day hemisphere lens 12 are installed in the upper layer inside circular slot 13, and are used for simulating the day and night hemispheres of the earth. They distinguish the areas of day and night through lens effect, help students intuitively understand the change of day and night. The day hemisphere lens 12 is completely transparent, and the night hemisphere lens 11 is a gray-black lens. The upper surfaces of night hemisphere lens 11 and day hemisphere lens 12 are flush with the upper surface of component one 1, so that the whole demonstration device is more beautiful.
[0031] The thickness of the night hemisphere lens 11 and the day hemisphere lens 12 is half of the depth of the circular slot 13. The assembly two 2 comprises a circular plate 21, the diameter of the circular plate 21 is equal to the diameter of the circular slot 13, and the thickness of the circular plate 21 is equal to half of the depth of the circular slot 13. When the circular plate 21 is embedded in the bottom of the circular slot 13, the lower surface of the circular plate 21 is flush with the lower surface of the assembly one 1. In order to ensure the aesthetics of the entire device, the thickness of the assembly two 2 is also half of the depth of the circular slot 13, and when the assembly two 2 is embedded in the bottom of the circular slot 13, the bottom of the assembly two 2 is flush with the bottom of the assembly one 1, which is more beautiful.
[0032] The toggle bars 22 extend from both ends of the diameter of the circular plate 21, which are used to manually rotate the circular plate 21 to simulate the movement of the sun's direct point during the revolution of the earth. The length between the two ends of the two toggle bars 22 is greater than the diameter of the circular plate 17, which is convenient for holding and operating.
[0033] The position where the bottom circular plate 17 and the side plate 14 of the assembly one 1 contact each other is provided with a clearance slot 16, and when the circular plate 21 is embedded in the circular slot 13, the toggle bars 22 are located in the clearance slot 16. The clearance slot 16 is provided at the position where the bottom circular plate 17 and the side plate 14 of the assembly one 1 contact each other, which is used to accommodate the toggle bars 22 of the assembly two 2, so as to ensure that the toggle bars 22 are not hindered during rotation.
[0034] The extensions of the two sides of the clearance slot 16 pass through the center of the circular slot 13, and the included angle between the two sides of the clearance slot 16 is 47°. During the revolution of the earth, the change of the sun's direct point is always between the tropics, and the angle between the tropics and the equator is 23.5°. Therefore, when the position of the direct point is changed by rotating the circular plate 21, it can only be rotated to one side by 23.5° at most. Therefore, the included angle between the two sides of the clearance slot 16 should be 47°, which is more in line with the actual situation.
[0035] The equator, the tropics, and the polar circle indication lines are marked on the circular plate 21. The equator, the tropics, and the polar circle indication lines are marked on the circular plate 21, which helps students identify important geographical lines on the earth and is conducive to identifying the position of the sun's direct point at a certain moment.
[0036] Working principle: first take out the component 1, let the student points out the equator, the north and south tropic, the north and south polar circle on component 1, then take out component 2, let the student points out the night hemisphere, the day hemisphere, the sun light straight point on component 2, after the student points out, the circular plate 21 of component 2 has the identification one side up from the bottom of the circular mouth of component 1, embeds, and component 1 and component 2 are assembled together.According to the law of earth revolution, the straight point of the light ray 15 is aligned, the north tropic, the equator, the south tropic, the equator, the north tropic, and the length of the latitude of the day hemisphere and the night hemisphere is observed in turn by the dialing of the dialing bar 22, so that the students can really do the experiment in the classroom, the teacher and the student can solve the problem of the sun straight point and the day and night length change by the so-called space imagination ability, the interest of the student for the content learning can be greatly improved, and the learning difficulty of the related knowledge is reduced, and the effect of convenient operation, taking, storage is achieved.
[0037] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, no element discussed herein is required unless specifically recited in a claim.
[0038] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A demonstration apparatus for the variation of day length, characterized in that: It comprises component one (1) and component two (2), the component one (1) is composed of a circular plate (17) and a side plate (14), the circular plate (17) is provided with a circular notch (13), the circular notch (13) is provided with a night hemisphere lens (11) and a day hemisphere lens (12), the side plate (14) is located on the side of the day hemisphere lens (12), the side plate (14) is provided with a quasi-light line (15) for simulating sunlight irradiation on the earth, the bottom of the circular notch (13) is embedded with the component two (2), and the component two (2) can rotate inside the circular notch (13).
2. The instrument of claim 1, wherein: The night hemisphere lens (11) and the day hemisphere lens (12) are installed in the upper layer inside the circular notch (13), and the upper surfaces of the night hemisphere lens (11) and the day hemisphere lens (12) are flush with the upper surface of the component one (1).
3. The instrument of claim 1, wherein: The thickness of the night hemisphere lens (11) and the day hemisphere lens (12) is half of the depth of the circular notch (13).
4. The instrument of claim 1, wherein: The component two (2) comprises a circular plate (21), the diameter of the circular plate (21) is equal to the diameter of the circular notch (13), the thickness of the circular plate (21) is equal to half of the depth of the circular notch (13), and when the circular plate (21) is embedded in the bottom of the circular notch (13), the lower surface of the circular plate (21) is flush with the lower surface of the component one (1).
5. The instrument of claim 4, wherein: The diameter of the circular plate (21) extends two ends of the dial bar (22).
6. The instrument of claim 5, wherein: The bottom circular plate (17) and the side plate (14) of the component one (1) are provided with a let slot (16) at the position of mutual contact, when the circular plate (21) is embedded in the circular notch (13), the dial bar (22) is located in the let slot (16).
7. The instrument of claim 6, wherein: The extensions of the two sides of the let slot (16) pass through the center of the circular notch (13), and the included angle between the two sides of the let slot (16) is 47°.
8. The instrument of claim 5, wherein: The length between the two ends of the two dial bars (22) is greater than the diameter of the circular plate (17).
9. The instrument of claim 4, wherein: The circular plate (21) is marked with equator, tropic of cancer and tropic of capricorn indication lines.