JP3059300U - Sun movement explanation machine - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to easily and accurately represent the movement of the Sun and the position of the Polaris on the day of the spring / autumn equinox, summer solstice, and winter solstice in a bright room using a laser pointer. The purpose of this study is to provide students with an easy-to-understand experience of the sun's movement and the altitude of the Polar Star in a way that is easy to understand. [Composition] A laser pointer is mounted on the equatorial ceremony mount, and the movement of the sun and the position of the North Star on all the latitudes of the spring equinox, summer solstice and winter solstice on the earth can be easily and accurately represented in a bright room. I do.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 In the field of natural science education, the idea was to use a laser pointer to indicate the movement of the Sun and the position of the North Star on the spring / autumn equinox, summer solstice and winter solstice at all latitudes on Earth. Unlike the previous planetariums, without setting up a dome or dimming the room, we consider the walls and ceiling of a bright room to be simple celestial spheres and consider the equinox / autumn equinox, summer solstice, and winter solstice at all latitudes. It relates to educational equipment that allows children and students to experience the movement of the sun, such as the sunrise, sunset, and altitudes of the south and the north, and the altitude of the Polar Star accurately and easily.

[0002]

[Prior art]

 Conventionally, planetariums and celestial globes have been considered as learning devices for celestial bodies, but planetariums require preparations such as installing a dome and darkening the room. In simpler planetariums, since the projector mounting axis is located at the east or west position, it is not possible to represent east or west objects on the horizon due to its structure. In other words, there was a drawback that the sunrise and sunset of the sun on the vernal equinox / autumn equinox in the east or west could not be represented. The celestial globe is a device that can understand the movement of the sun and stars in a bright place, but the sphere is not so large, and since the sphere viewed from the inside is actually viewed from the outside, it is realistic for children and students. Was lacking, and it was difficult to understand. In addition, laser pointers have been used as a tool in the planetarium to provide an easy-to-understand indication of the target, but a laser pointer is used to accurately indicate the movement of the sun and the altitude of the polar star. There was no.

[0003]

[Problems to be solved by the invention]

 When students learn the movement of the Sun and the height of the Polar Star, the movement of the Sun and the height of the Polar Star, such as the equinox and the equinox in Japan, the sunrise and sunset of the summer solstice and the winter solstice, the mid-south altitude, the height of the Polar Star, and even the Arctic Educational equipment that can easily and accurately represent the movement of the Sun and the altitude of the Polaris at any latitude on the earth, such as at high latitudes such as Europe, the equator, the Southern Hemisphere such as Australia, and the South Pole (the Polaris is not visible in the Southern Hemisphere). Is less. The planetarium was originally created to represent the starry sky, not the sun. The planetarium itself cannot accurately represent the sunrise and sunset of the sun. The celestial globe is also visually difficult for students and students, and until now it has not been possible to understand children's and students' learning in this field. Except for the drawbacks of the conventional educational equipment, the present invention has been made so that students can better understand the movement of the Sun and the height of the Polar Star.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, a hole 2 for mounting a gantry is made in one of the arc-shaped portions 1, and a gantry 3 for attaching a laser pointer is mounted so that it can be rotated sideways. The mount 3 is equipped with laser pointers 4, 5, 6, and 7, which represent the sun and the polar star on the spring / autumn equinox, summer solstice, and winter solstice. Drill a hole 8 in the arc-shaped part 1 to display the Polar Star. The arc-shaped portion 1 is mounted at the mounting portion 9 of the arc-shaped portion, but the arc-shaped portion 1 is movable, and the arc-shaped portion 1 is movable depending on the latitude. In this invention, one equatorial mount is composed of the arc-shaped portion 1, the gantry 3, and the mounting portion 9 of the arc-shaped portion. Another example of this idea is to attach only one laser pointer 4 and make it movable so that it represents the sun and the North Star on the spring / autumn equinox, summer solstice and winter solstice, or The pointer 4 may be movable, and a pointer indicating the sun on the day of the spring / autumn equinox, summer solstice and winter solstice and a laser pointer 7 indicating the polar star may be attached.

[0005]

[Action]

 When this device is placed in the center of a room such as a classroom, and the direction is adjusted using the compass needle 10, it represents the actual movement of the sun at that location and the altitude of Polaris. When the laser pointers 4, 5, 6, and 7 are illuminated in accordance with the latitude of Japan, the sun movements such as the equinox / autumn equinox, the summer solstice, and the winter solstice in Japan, the sunrise, the sunset, the altitude of the north polar star, etc. Can be easily and accurately represented in a bright room, so that children and students can understand it visually. Turning the laser pointers 4, 5, and 6 representing the sun on the spring equinox, the summer solstice, and the winter solstice from east to west indicates the diurnal motion of the sun. Due to differences in the location of sunrise and sunset depending on the day of the spring equinox, autumn equinox, summer solstice, and winter solstice, and the difference in the position of the sun at the same time, it is easy to change the length of daytime for the spring equinox, equinox, summer solstice, and winter solstice. I understand. Furthermore, even if the laser pointer 7 representing the polar star is rotated daily from east to west, the polar star rotates at that location and the altitude is constant. When it is adjusted to latitudes other than Japan, sun movements such as the equinox / autumn equinox, summer solstice and winter solstice, sunset, and mid-south altitudes around the world and the height of the polar star (in the southern hemisphere, the direction of the ground Can't do that.) Especially in the southern hemisphere, the sun can easily pass through the sky from the north instead of the south as in Japan.

[0006]

【Example】

 Drill holes 2 for mounting the gantry on one side of the arc-shaped part 1, and mount the gantry 3 to which the laser pointer is attached so that it can be rotated sideways. At this time, the rotation axis of the gantry 3 coincides with the line of the diameter of the circle of the arc-shaped portion 1. The laser pointer 4 is mounted so that the extension line on the opposite side of the optical axis passes through the center of the circle of the arc-shaped portion 1 at right angles to the rotation axis of the gantry 3. The laser pointer 4 indicates the sun in the equinox and the equinox. With such a structure, even if the latitude is changed, the position of the sunrise from the east or the position of the sunset just west does not change. Next, in a plane including the line having the diameter of the arc-shaped portion 1 and the optical axis of the laser pointer 4, the angle between the center of the circle of the arc-shaped portion 1 and the optical axis of the laser pointer 4 is ± 23. Attach the laser pointers 5 and 6 so that the extension lines on the opposite side of the optical axes of the laser pointers 5 and 6 come at 4 °. These represent the sun on the summer solstice and winter solstice, respectively. Further, the laser pointer 7 is mounted so that the rotation axis of the gantry 3 and the optical axis of the laser pointer 7 are aligned. This represents the Polar Star. The arc-shaped part 1 drills a hole 8 for displaying a polar star. The arc-shaped portion 1 is attached by an arc-shaped portion mounting portion 9, but the arc-shaped portion 1 is movable, and the arc-shaped portion 1 is movable depending on latitude. In this invention, the arc-shaped portion 1, the gantry 3, and the mounting portion 9 of the arc-shaped portion constitute one equatorial mount. As another embodiment of the present invention, only one laser pointer 4 is attached and made movable so as to represent the sun and the North Star on the spring / autumn equinox, summer solstice and winter solstice, or May be movable, and a laser pointer 7 representing the sun on the day of the spring / autumn equinox, summer solstice and winter solstice and a polar star may be attached.

[0007]

[Effect of the invention]

 With this idea, it is possible to easily and accurately represent the movement of the sun, the difference in the length of the day, and the height of the North Polar star in Japan, which were difficult to explain in the past, in the spring / autumn equinox, summer solstice, and winter solstice. Similarly, children and students can study in this area because the movement of the sun, the difference in the length of the day and the altitude of the North Star on the spring / autumn equinox, summer solstice, and winter solstice at other latitudes can be easily and accurately represented in a bright room. Is easier to understand. Furthermore, by shining the light of the laser pointer indicating the sun toward the ground, the shadows and movements of the sticks made by the sun on the spring / autumn equinox, summer solstice, and winter solstice can be displayed. Also, if this is used near the window in the room, it is possible to determine how much of the interior of the room falls on the spring / autumn equinox, the summer solstice, and the winter solstice. This is a very useful idea because it can be used in several other ways, for example, as a clue to whether it will enter or to get the sunshine hours.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a plan view of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Arc-shaped part 2 Mounting hole 3 Mounting base 4 Laser pointer 5 Laser pointer 6 Laser pointer 7 Laser pointer 8 Hole for displaying a polar star 9 Mounting part of an arc-shaped part 10 Compass needle

Claims (2)

[Utility model registration claims] 1. A sun movement indicator that indicates the position of the sun or a polar star with laser pointers 4, 5, 6, and 7 attached to an equatorial ceremony mount 3. 2. A sun motion indicator which indicates the position of the sun or a polar star, wherein the laser pointer 4 is movable, and only or the laser pointer 7 is mounted on the equatorial ceremony mount 3.