planetarium

Abstract

The utility model provides a kind of planetarium, including support assembly, celestial sphere component and internal movable assembly, celestial sphere component is rotatedly connected with support assembly by prime vertical circle component, solar component, moon component and earth component are installed in the inside of celestial sphere component, earth component is placed in the center position of celestial sphere component, moon component is provided with dark surface and bright surface, internal movable assembly includes sun running component and moon running component, sun running component is connected with solar component, so that solar component rotates around earth component, moon running component is connected with moon component, so that moon component rotates around earth component, and keep one side of moon component always towards earth component, and make the bright surface of moon component always towards solar component direction. The present application can solve many problems such as the difficulty of dynamic display real-time celestial phenomena for a device in traditional method, improve the intuitiveness and practicality of celestial motion demonstration, and further reduce the cost.

Description

Technical Field

[0001] This utility model relates to the field of celestial equipment technology, and more specifically, to a planetarium. Background Technology

[0002] In geography teaching and science education, to comprehensively demonstrate celestial phenomena above the horizon at any location on any date and time in both the Gregorian and lunar calendars, traditional methods often require the simultaneous use of multiple display instruments, including celestial globes, trispheres, globes, lunar phase diagrams, star charts, Gregorian-lunar calendar conversion tables, and time zone tables. While these tools each have a clear function, their use requires a significant amount of space, and their operation is cumbersome, necessitating repeated comparisons and adjustments. The demonstration effect is not intuitive enough, making it difficult for students or viewers to quickly understand complex astronomical phenomena. Furthermore, the placement and storage of multiple instruments not only consumes considerable space but also increases maintenance and replacement costs; damage to or replacement of a single piece of equipment may require additional workload and expenses. More importantly, traditional methods struggle to achieve dynamic demonstrations and cannot intuitively simulate the continuous processes of celestial motion, as well as their causes and patterns, thus limiting the effectiveness of teaching and science popularization. Utility Model Content

[0003] This invention provides a planetarium that aims to solve many problems, such as the difficulty of dynamically displaying real-time celestial phenomena using a single device in traditional methods, thereby improving the intuitiveness and practicality of celestial motion demonstrations and further reducing costs.

[0004] To achieve the above objectives, this utility model provides a planetarium, comprising: A support assembly, comprising a base bracket, a semi-circular bracket, and a ground ring bracket, wherein the semi-circular bracket is placed on the base bracket and the ground ring bracket is connected to the semi-circular bracket; The celestial sphere assembly is mounted on the support assembly via the zonal ring component. The celestial sphere assembly is rotatably connected to the zonal ring component at the North and South Celestial Poles. The celestial sphere assembly contains a solar component, a lunar component, and an Earth component, with the Earth component positioned at the center of the celestial sphere assembly. An internal active component includes a solar orbiting component and a lunar orbiting component. The solar orbiting component is connected to the solar component to cause the solar component to rotate around the Earth component. The lunar orbiting component is connected to the lunar component to cause the lunar component to rotate around the Earth component, while keeping one side of the lunar component always facing the Earth component. The moon component has a bright side and a dark side. A rotation transmission assembly connects the sun component and the moon component. When the sun component or the moon component rotates, the rotation transmission assembly ensures that the bright side of the moon component always faces the sun component.

[0005] In one embodiment, the solar operating component includes a first rotating handle and a first rotating transmission part; The first rotation transmission unit is connected to the first rotation handle, and the solar component is placed on the first rotation transmission unit. The first rotation handle drives the first rotation transmission unit to rotate the solar component.

[0006] In one embodiment, the moon-running component includes a second rotating handle and a second rotating transmission part; The second rotation transmission part is connected to the second rotation handle, and the moon component is placed on the second rotation transmission part. The second rotation handle drives the second rotation transmission part to rotate the moon component.

[0007] In one embodiment, the rotary transmission assembly includes a main wheel and a secondary wheel. The main wheel is connected to the first rotary transmission unit and moves as the solar component rotates. The secondary wheel is rotatably connected to the second rotary transmission unit and moves as the lunar component rotates. The main wheel is connected to the auxiliary wheel via a transmission, and the auxiliary wheel is connected to the moon component via a transmission. When the auxiliary wheel rotates, it drives the moon component to rotate. When the moon component rotates, it drives the secondary wheel to rotate, causing the secondary wheel to rotate relative to the main wheel, which in turn causes the moon component to rotate on its own axis, ensuring that the bright side of the moon component always faces the sun component. When the sun component rotates, it drives the main wheel to rotate, causing the main wheel to rotate relative to the secondary wheel, which in turn causes the moon component to rotate on its own axis, ensuring that the bright side of the moon component always faces the sun component.

[0008] In one embodiment, the solar operating component is further provided with a lunar phase disk, which is placed in the first rotation transmission part, and the solar component rotates with the lunar phase disk when the first rotation handle is rotated; The celestial sphere component has an ecliptic marker on its surface, and the lunar phase disk corresponds to the ecliptic marker.

[0009] In one embodiment, the planetarium is further provided with a terminator component, which is placed on both sides of the Earth component and fixed to the first rotation transmission unit. The terminator component rotates around the Earth component as the Sun component rotates, and the plane of the terminator component always forms a 90-degree angle with the direction of the Sun component.

[0010] In one embodiment, the planetarium further includes a timing module, which includes a Gregorian calendar unit, a lunar calendar unit, and a time unit; The calendar unit determines the calendar date by rotating the solar component and selecting the corresponding position of the solar component on the ecliptic mark on the surface of the celestial sphere assembly. The moon phase disk is equipped with a lunar date scale. The lunar unit determines the lunar date by controlling the position of the moon component at the corresponding lunar date scale on the moon phase disk. The time unit includes a third rotating handle and a time disk. The time disk and the third rotating handle are connected by a connecting rod. The time disk is placed inside the celestial sphere assembly. By rotating the time disk, the local time at any point in a day can be determined, and the time in any zone of a day can be determined by conversion.

[0011] In one embodiment, a zonal component is provided inside the horizon support, the zonal component is disposed between the horizon support and the celestial sphere assembly, the zonal component is movably connected to the east and west points of the horizon support, the zonal component is movably connected to the north and south celestial poles of the celestial sphere assembly, and the zonal component is provided with a component for selecting the latitude of the observation site.

[0012] In one embodiment, the Earth component is provided with a longitude indicator line for selecting the observation site and an indicator, wherein the location of the indicator is the current observation site location of the simulated Earth, and the longitude indicator line for selecting the observation site is the longitude corresponding to the current observation site.

[0013] In one embodiment, the planetarium further includes a positioning module, which determines the latitude of the observation site by selecting a latitude component.

[0014] This utility model has the following beneficial effects: 1. Highly intuitive: This application can integrate the Earth component, Moon component, Sun component and celestial sphere component together. The celestial sphere component is equipped with a full-sky star map, Milky Way marker, ecliptic marker, celestial equator, right ascension and declination, etc. One side of the Moon component always faces the Earth component, and the bright side always faces the Sun component, which solves the problem of needing multiple different display tools to find real-time celestial phenomena.

[0015] 2. High practicality: This application can show viewers and students real-time celestial phenomena at any location and time on the Earth component by changing the relative positions of the celestial sphere component, the Earth component, the solar component, and the lunar component, determining any location on the Earth component, any Gregorian calendar date in a year, any lunar calendar date in January, and any time of day, so that viewers can better understand astronomical knowledge.

[0016] 3. Low cost: This application has a simple structure, does not require precise maintenance, and the multiple components are compact, occupying little space. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of a planetarium according to an embodiment of the present invention; Figure 2 This is a side cross-sectional structural diagram of a planetarium according to an embodiment of the present invention.

[0018] Among them, 1 is the base support; 2 is the semi-circular support; 3 is the horizon support; 4 is the zonal component; 5 is the component for selecting the latitude of the observation site; 6 is the equatorial coordinate scale; 7 is the horizon coordinate scale; 8 is the solar component; 9 is the lunar component; 10 is the Earth component; 11 is the box for controlling the movement of the sun and moon; 12 is the third rotating handle; 13 is the connecting rod; 14 is the time dial; 15 is the longitude indicator line and zenith indicator for selecting the observation site; 16 is the first rotating handle; 17 is the first rotating transmission unit; 18 is the main wheel; 19 is the terminator component; 20 is the lunar phase disk; 21 is the second rotating handle; 22 is the second rotating transmission unit; 23 is the auxiliary wheel; and 24 is the celestial sphere assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The described embodiments are some embodiments of this application, but not all embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] Figure 1 This is a schematic diagram of the structure of a planetarium according to an embodiment of the present invention. The planetarium includes: A support assembly, comprising a base bracket, a semi-circular bracket, and a ground ring bracket, wherein the semi-circular bracket is placed on the base bracket and the ground ring bracket is connected to the semi-circular bracket; The celestial sphere assembly is mounted on the support assembly via a zonal ring component. The celestial sphere assembly is rotatably connected to the zonal ring component at the North and South Celestial Poles. Figure 1 As shown, the zodiacal component is rotated and connected at the east and west points of the horizon support, or the meridian component is positioned at the south and north points of the horizon support. The celestial sphere assembly contains a solar component, a lunar component, and an earth component, with the earth component placed at the center of the celestial sphere assembly. An internal active component includes a solar orbiting component and a lunar orbiting component. The solar orbiting component is connected to the solar component to cause the solar component to rotate around the Earth component. The lunar orbiting component is connected to the lunar component to cause the lunar component to rotate around the Earth component, while keeping one side of the lunar component always facing the Earth component. The moon component has a bright side and a dark side. A rotation transmission assembly connects the sun component and the moon component. When the sun component or the moon component rotates, the rotation transmission assembly ensures that the bright side of the moon component always faces the sun component.

[0021] Specifically, the celestial sphere component is set as a transparent hollow sphere. The surface of the celestial sphere component is set with 88 constellations, the Milky Way, galaxies, nebulae, star clusters, as well as right ascension, declination, celestial equator, ecliptic markers, etc. The ecliptic markers are divided into 365 grids, marking the month, day, twenty-four solar terms and the twelve zodiacal signs.

[0022] Above the horizon support plane, the celestial phenomena displayed on the celestial sphere are those observable above the horizon.

[0023] The celestial sphere assembly can rotate around an axis passing through the north and south celestial poles, and it can also tilt and rotate toward the north and south points of the horizon.

[0024] Preferably, the solar operating component includes a first rotating handle and a first rotating transmission part; The first rotation transmission unit is connected to the first rotation handle, and the solar component is placed on the first rotation transmission unit. The first rotation handle drives the first rotation transmission unit to rotate the solar component.

[0025] Preferably, the moon-operating component includes a second rotating handle and a second rotating transmission part; The second rotation transmission part is connected to the second rotation handle, the moon component is placed on the second rotation transmission part, and the second rotation handle drives the second rotation transmission part to rotate the moon component.

[0026] Preferably, the first rotation transmission part and the second rotation transmission part pass through the bottom of the celestial sphere assembly, and the first rotation handle and the second rotation handle are located outside the south celestial pole of the celestial sphere assembly.

[0027] Preferably, the rotation of the first rotary handle or the first rotary transmission unit and the second rotary handle or the second rotary transmission unit can be controlled by a motor assembly.

[0028] Preferably, such as Figure 2As shown, the solar and lunar orbiting components can be assembled into a control box for controlling the movement of the sun and moon using a sleeve. This control box includes a first sleeve and a second sleeve, with the solar orbiting component housed inside the first sleeve and the lunar orbiting component housed inside the second sleeve. The sleeves can penetrate the outer shell of the celestial sphere assembly. A first and second rotating handle are located at one end of the sleeve, and a first and second rotation transmission part are located at the other end of the sleeve.

[0029] Preferably, the rotary transmission assembly includes a main wheel and a secondary wheel. The main wheel is connected to the first rotary transmission part and moves as the solar component rotates. The secondary wheel is rotatably connected to the second rotary transmission part and moves as the lunar component rotates. The main wheel is connected to the auxiliary wheel via a transmission, and the auxiliary wheel is connected to the moon component via a transmission. When the auxiliary wheel rotates, it drives the moon component to rotate. When the moon component rotates, it drives the secondary wheel to rotate, causing the secondary wheel to rotate relative to the main wheel. At this time, the secondary wheel rotates on its own axis, causing the moon component to rotate on its own axis, so that the bright side of the moon component always faces the sun component. When the sun component rotates, it drives the main wheel to rotate, causing the main wheel to rotate relative to the secondary wheel. At this time, the secondary wheel rotates on its own axis, causing the moon component to rotate on its own axis, so that the bright side of the moon component always faces the sun component.

[0030] Specifically, the secondary wheel is fixedly connected to the second rotation transmission unit, and the secondary wheel can rotate relative to the second rotation transmission unit. The rotation axis of the secondary wheel is connected to the moon component, so when the secondary wheel rotates, the moon component will also rotate.

[0031] Preferably, the lunar component includes a first spherical layer and a second spherical layer. The first spherical layer is placed inside the second spherical layer. The dark side and the bright side are disposed on the first spherical layer. The first spherical layer is connected to the secondary wheel and rotates with the rotation of the secondary wheel. When the lunar component and the solar component are relatively displaced, the bright side always faces the direction of the sun.

[0032] Furthermore, the second spherical layer is a transparent sphere, fixedly connected to the second rotational transmission unit via a support. It does not rotate on its own but only rotates around the Earth along with the second transmission unit. When the second rotational transmission unit rotates around the Earth, the second spherical layer will also rotate around the Earth with the Earth component as the center, and one side will always face the Earth.

[0033] When the rotation angles of the sun component and the moon component are different, any relative displacement between the main wheel and the secondary wheel will cause the secondary wheel to rotate, thereby driving the moon component to rotate, so that the bright side of the moon component always faces the sun component.

[0034] Specifically, the main wheel and the auxiliary wheel can be rotary wheels or gears, and the transmission method can be a conveyor belt or gears. Preferably, the main wheel and the auxiliary wheel can be an odd number of gears.

[0035] Furthermore, the solar operating component is also provided with a lunar phase disk, which is placed in the first rotation transmission part. When the first rotation handle is rotated, the solar component and the lunar phase disk rotate. The celestial sphere component has an ecliptic marker on its surface, and the lunar phase disk corresponds to the ecliptic marker.

[0036] Furthermore, the planetarium is also equipped with a terminator component, which is placed on both sides of the Earth component and fixed to the first rotation transmission unit. The terminator component rotates around the Earth component as the Sun component rotates, and the plane of the terminator component always forms a 90-degree angle with the direction of the Sun component.

[0037] Specifically, the terminator components are located on both sides of the Earth component, perpendicular to the lunar phase disk. The terminator components change with the position of the Sun component, dividing the Earth component into two hemispheres: day and night. The side closer to the Sun component is the day hemisphere, simulating the Sun component shining on the Earth component, while the other side is the night hemisphere, where the Sun component does not shine on the Earth component. This is used to indicate whether the current position on the Earth component corresponds to day or night.

[0038] Furthermore, the planetarium also includes a timing module, which includes a Gregorian calendar unit, a lunar calendar unit, and a time unit; The calendar unit determines the calendar date by rotating the solar component and selecting the corresponding position of the solar component on the ecliptic mark on the surface of the celestial sphere assembly. The moon phase disk is equipped with a lunar date scale. The lunar unit determines the lunar date by controlling the position of the moon component at the corresponding lunar date scale on the moon phase disk. The time unit includes a third rotating handle and a time disk. The time disk and the third rotating handle are connected by a connecting rod. The time disk is placed inside the celestial sphere assembly. By rotating the time disk, any time of day at the selected observation location can be determined.

[0039] Specifically, the time disk is fixed to the top of the celestial sphere assembly via a third rotating handle on the outer side of the north celestial pole. When the rotating unit is rotated, the time disk and the celestial sphere assembly rotate relative to each other.

[0040] The time dial is marked with 24 hours, and the preferred minimum time interval can be set to 10 minutes.

[0041] The time dial can be positioned above the inner surface of the celestial sphere assembly.

[0042] In one embodiment, a zonal component is provided inside the horizon support, the zonal component is disposed between the horizon support and the celestial sphere assembly, the zonal component is movably connected to the east and west points of the horizon support, the zonal component is movably connected to the upper and lower north and south celestial poles of the celestial sphere assembly, and the zonal component is provided with a component for selecting the latitude of the observation site.

[0043] Specifically, the azimuth-circle component is movably connected to the east and west points of the horizon support. The straight line connecting the east and west points of the horizon support serves as the rotation axis of the azimuth-circle component, which rotates around this axis. A latitude component for the observation site is fixed at the connection point between the azimuth-circle component and the horizon support, forming a fixed 90-degree angle with the azimuth-circle component. This component rotates with the azimuth-circle component, always maintaining a 90-degree angle, and is used in conjunction with the latitude scale on the semi-circular support to select the latitude of the observation site.

[0044] like Figure 2 As shown, the axis where the south and north celestial poles of the celestial sphere component are located simulates the north and south celestial poles of the celestial sphere. The zonal circle component is movably connected to the north and south celestial poles of the celestial sphere component, causing the celestial sphere component to rotate around the axis where the north and south celestial poles are located.

[0045] like Figure 1 As shown, the Earth component is equipped with a longitude indicator line for selecting the observation site and a zenith indicator. The location of the indicator line represents the current location of the simulated Earth observation site, and the longitude indicator line represents the longitude corresponding to the current observation site. The planetarium also includes a positioning module, which determines the latitude of the observation site by selecting the latitude component.

[0046] The indicator always points directly above the planetarium, i.e., at the zenith. By combining the indicator with the latitude component of the selected observation location, the longitude, latitude, and zenith of the current observation location can be determined.

[0047] Preferably, the latitude component of the selected observation site is equipped with a latitude scale, which is mounted on a semi-circular support and is perpendicular to the plane of the horizon support. The latitude scale has multiple latitude graduations and is perpendicular to the plane of the horizon component. The latitude component of the selected observation site points to one of the latitude graduations on the latitude scale.

[0048] When the zonal component rotates relative to the horizon support, the latitude selection component on the zonal component rotates accordingly, and the trajectory of the latitude selection component corresponds to the latitude scale. The latitude location where the latitude selection component points to a certain latitude mark on the latitude scale is the current observation location of the indicator. At this time, the half of the celestial sphere above the horizon support on the celestial sphere component represents all celestial phenomena visible from the corresponding location of the indicator.

[0049] Furthermore, the latitude scale is set to include latitudes from 90 degrees north to 90 degrees south.

[0050] Furthermore, the ramusoidal component is also equipped with an equatorial coordinate scale and a horizon coordinate scale. The positioning module also includes equatorial coordinate units and horizon coordinate units corresponding to the equatorial coordinate scale and the horizon coordinate scale.

[0051] The equatorial coordinate ruler is a semi-circular ruler with both ends fixed at the north and south celestial poles of the celestial sphere. It rotates around the north and south celestial poles on the outside of the celestial sphere and has markings from 0 to +90 degrees and from 0 to -90 degrees. Rotating the equatorial coordinate ruler helps to read right ascension and declination.

[0052] The horizon scale is a 1 / 4 arc scale located on the opposite side of the latitude component of the observation site, that is, due east or due west of the horizon. When stored, it coincides with the horizon and can be rotated from the horizontal position upwards, up to 90 degrees, to the vertical position to help read the horizon coordinates.

[0053] Preferably, the indicator on the Earth component can be a buoyant bubble or a pointer suspended by gravity. When the rotating celestial sphere component and the zonal sphere component are in position, the indicator always points directly above the celestial sphere component (i.e., the zenith position). At this time, the position of the indicator is the location on Earth corresponding to the latitude of the selected observation site.

[0054] After determining the location, Gregorian calendar date, and lunar calendar date, the local time of the observation site is determined by using the equatorial coordinate ruler to compare the right ascension of the sun (ecliptic longitude) and rotating the time disk. After setting the time, the time disk can rotate along with the celestial sphere component to simulate different celestial phenomena appearing continuously at the observation site.

[0055] In addition to the functions described above, the planetarium described in this application can use the first, second, and third handles, the celestial sphere assembly, and the equatorial and horizon coordinate scales respectively. It can also use different controllable combinations of the first, second, and third handles, the celestial sphere assembly, and the equatorial and horizon coordinate scales to simulate the formation of astronomical phenomena such as solar eclipses, lunar eclipses, the division of the five climatic zones, the changing of the four seasons, and the apparent diurnal motion of celestial bodies. It can also demonstrate the gradual change patterns of astronomical phenomena such as the subsolar point, the noon solar altitude, the length of day and night, and polar day and polar night.

[0056] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0057] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. It should also be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0058] Furthermore, it should be noted that, unless otherwise explicitly stated and limited, the terms "connection," "driving," and similar terms used in the description of this application should be interpreted broadly. They can refer to direct connections, connections through an intermediate medium, or relationships within two elements. Those skilled in the art can understand their specific meaning in this application based on the specific circumstances. In this document, terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. In this document, the North and South Celestial Poles refer to... Figure 2 The North Celestial Pole and the South Celestial Pole are shown.

[0059] The above embodiments are provided for those skilled in the art to implement or use this application. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the spirit of this application. Therefore, the scope of protection of this application is not limited to the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A planetarium, characterized in that, The planetarium includes: A support assembly, comprising a base bracket, a semi-circular bracket, and a ground ring bracket, wherein the semi-circular bracket is placed on the base bracket and the ground ring bracket is connected to the semi-circular bracket; The celestial sphere assembly is mounted on the support assembly via a zonal component. The celestial sphere assembly is rotatably connected to the zonal component at the North and South Celestial Poles. The celestial sphere assembly contains a solar component, a lunar component, and an Earth component, with the Earth component positioned at the center of the celestial sphere assembly. An internal movable assembly includes a solar orbiting component and a lunar orbiting component. The solar orbiting component is connected to the solar component, causing the solar component to rotate around the Earth component. The lunar orbiting component is connected to the lunar component, causing the lunar component to rotate around the Earth component, ensuring that one side of the lunar component always faces the Earth component. The moon component has a bright side and a dark side. A rotation transmission assembly connects the sun component and the moon component. When the sun component or the moon component rotates, the rotation transmission assembly ensures that the bright side of the moon component always faces the sun component.

2. The planetarium according to claim 1, characterized in that, The solar operating component includes a first rotating handle and a first rotating transmission part; The first rotation transmission unit is connected to the first rotation handle, and the solar component is placed on the first rotation transmission unit. The first rotation handle drives the first rotation transmission unit to rotate the solar component.

3. The planetarium according to claim 2, characterized in that, The lunar motion component includes a second rotating handle and a second rotating transmission unit; The second rotation transmission part is connected to the second rotation handle, and the moon component is placed on the second rotation transmission part. The second rotation handle drives the second rotation transmission part to rotate the moon component.

4. The planetarium according to claim 3, characterized in that, The rotary transmission assembly includes a main wheel and a secondary wheel. The main wheel is connected to the first rotary transmission part and moves as the solar component rotates. The secondary wheel is rotatably connected to the second rotary transmission part and moves as the lunar component rotates. The main wheel is connected to the auxiliary wheel via a transmission, and the auxiliary wheel is connected to the moon component via a transmission. When the auxiliary wheel rotates, it drives the moon component to rotate. When the moon component rotates, it drives the secondary wheel to rotate, causing the secondary wheel to rotate relative to the main wheel, which in turn causes the moon component to rotate on its own axis, ensuring that the bright side of the moon component always faces the sun component. When the sun component rotates, it drives the main wheel to rotate, causing the main wheel to rotate relative to the secondary wheel, which in turn causes the moon component to rotate on its own axis, ensuring that the bright side of the moon component always faces the sun component.

5. The planetarium according to claim 3, characterized in that, The solar operating component is also provided with a lunar phase disk, which is placed in the first rotation transmission part. When the first rotation handle is rotated, the solar component and the lunar phase disk rotate. The celestial sphere component has an ecliptic marker on its surface, and the lunar phase disk corresponds to the ecliptic marker.

6. The planetarium according to claim 5, characterized in that, The planetarium also includes a terminator component, which is placed on both sides of the Earth component and fixed to the first rotation transmission unit. The terminator component rotates around the Earth component as the Sun component rotates.

7. The planetarium according to claim 6, characterized in that, The planetarium also includes a timing module, which includes a Gregorian calendar unit, a lunar calendar unit, and a time unit. The calendar unit determines the calendar date by rotating the solar component and selecting the corresponding position of the solar component on the ecliptic mark on the surface of the celestial sphere assembly. The moon phase disk is equipped with a lunar date scale. The lunar unit determines the lunar date by controlling the position of the moon component at the corresponding lunar date scale on the moon phase disk. The time unit includes a third rotating handle and a time disk. The time disk and the third rotating handle are connected by a connecting rod. The time disk is placed inside the celestial sphere assembly. By rotating the time disk, the time of any zone in a day at the observation site can be determined by conversion.

8. The planetarium according to claim 1, characterized in that, The zonal circle component is positioned between the horizon support and the celestial sphere assembly. The zonal circle component is movably connected to the east and west points of the horizon support, and is movably connected to the north and south celestial poles of the celestial sphere assembly. The zonal circle component is equipped with a latitude selection component for the observation site.

9. The planetarium according to claim 8, characterized in that, The Earth component is equipped with a longitude indicator line for selecting the observation site and an indicator. The location of the indicator is the current observation site location of the simulated Earth, and the longitude indicator line for selecting the observation site is the longitude corresponding to the current observation site.

10. The planetarium according to claim 9, characterized in that, The planetarium also includes a positioning module, which determines the latitude of the observation site by selecting the latitude component of the observation site.

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