CN2079788U - Globe - Google Patents

Abstract

The utility model provides a globe which can demonstrate earth rotation and revolution and reveal the principle of variation of four seasons of the earth. The essential technical proposal is that the center of a globe body is provided with a bulb; the inner of the globe body is provided with a semiglobe shade whose radius is slightly smaller than the globe body, and the semiglobe shade and the globe body are concentric; a fulcrum is provided with a season adjusting disk which does synchronous rotation with the shade. When a bulb is light, the left semiglobe is black and the right semiglobe is light, and the globe is used to simulate the earth rotation; when a user rotates the adjusting disk, the globe is used to simulate the earth revolution. The globe is not only a teaching aid, but also can be used as a table lamp; the globe is suitable for schools and families.

Description

Globe

The utility model belongs to a kind of teaching appliance, particularly a kind of terrestrial globe.

Commercially available terrestrial globe can be showed the mutual geographic position in basic overview, the various countries of the earth clear now.But in universe, the earth is not to exist isolatedly, it with other celestial body together, according to mutual relationship, form various galaxies, as the solar system, the Galactic System etc.Because the position of the sun and the earth, a cyclical variation takes place in every year, thereby has produced the variation of the fourth quater on earth.Therefore, the relation of the sun and the earth is a most important relation between each celestial body of the solar system, also is the object of people's primary study, also is an important content of physics teaching simultaneously.And existing terrestrial globe can not sake of clarity.

The purpose of this utility model is to provide a kind of relation that can demonstrate the earth and the sun, and then can simulate and disclose the terrestrial globe that the principle of four seasons variation takes place the earth.

The purpose of this utility model is achieved in that it is by spheroid, composition such as globe bracket and base, it is characterized in that: the center in spheroid, one bulb is arranged, bulb is fixed on the vertical lamp stand, the lower end of lamp stand by the arc bridge plate, is fixed on the lower fulcrum of globe bracket, in spheroid inside, there is a radius to be slightly less than spheroid, and the semisphere rotation light shield concentric with spheroid, vertical side stands in the spheroid, its lower end uses bearing fixing on lamp stand, on baffle bracket, the other end of baffle bracket is fixed on the last fulcrum shaft of globe bracket with bearing fixing in its upper end, inside surface at light shield, scribble reflectorized material,, also have a shift fork hole at the outside surface of light shield, insert in the shift fork hole lower end of shift fork, the upper end of shift fork is connected with the lower end of last fulcrum axle sleeve, in the upper end of axle sleeve, is connecting committee's joint adjustment disk, on this dish, 15 ° at every interval is printed on solar term, and a week is 24 solar term.

Principle of work is: connect bulb switch, because the effect of rotation light shield, left hemisphere does not work, and right hemisphere is luminous, is signifying that this moment, left hemisphere was in night, and right hemisphere is in daytime.The hand push spheroid rotates a circle, because the rotation light shield does not change, so spheroid all is illuminated once, simulates earth rotation with this everywhere.

Because the existence of ecliptic obliquity is so bulb shown in Figure 1 mainly is radiated near the tropic of Cancer, it also is the limit that bulb impinges upon the terrestrial globe Northern Hemisphere, in season in the Summer Solstice of China (June 22) just this moment, this moment, " Summer Solstice " was facing to the solar term datum line on the season adjustment disk.When by turning clockwise season during 90 ° of adjustment disks, shift fork driven rotary light shield is half-twist also, and at this moment bulb light mainly is radiated near the equator.Be the season in the Autumnal Equinox of China at this moment, on the season adjustment disk, " Autumnal Equinox " is facing to the datum line in season.Continue again by turning clockwise 90 ° of adjustment disks, at this moment light shield forwards the right side to, and the light of bulb mainly is radiated near the tropic of Capricorn, it also is the limit that bulb impinges upon the Southern Hemisphere, just in time be the season in Winter Solstice of China this moment, and this moment, " Winter Solstice " was facing on the season datum line on the season adjustment disk.By that analogy, rotation one week of adjustment disk just in time is 1 year, is used for simulating revolution of earth, is a very teaching aid of imagery.

Below in conjunction with a description of drawings embodiment of the present utility model.

Fig. 1 is a theory structure synoptic diagram of the present utility model (part).

Fig. 2 is that the A of Fig. 1 is to view.

Spheroid 1 is bonded by two translucent hemisphere, and its appearance is stained with map.In the present embodiment, the material of spheroid is a low pressure polyethylene, and it has translucent characteristic, is fixed on the globe bracket 9.The globe bracket semicircular in shape has earth parallel scale on it.There is a bulb 10 center in spheroid, and bulb is fixed on the vertical lamp stand 11, and the lower end of lamp stand by arc bridge plate 12, is fixed on the lower fulcrum 14 of globe bracket.In spheroid inside, there is a radius to be slightly less than spheroid, and the semisphere rotation light shield 4 concentric with spheroid, vertical side stands in the spheroid, its lower end uses bearing fixing on lamp stand, on baffle bracket 5, the other end of baffle bracket is fixed on the last fulcrum shaft 7 of globe bracket with bearing fixing in its upper end.Inside surface at light shield scribbles reflectorized material.In the present embodiment, adopt sticking tinfoil technology.At the outside surface of light shield, also have a shift fork hole 2, insert in the shift fork hole lower end of shift fork 3, and the upper end of shift fork is connected with the lower end of last fulcrum axle sleeve 8.

Referring to Fig. 2, in the upper end of axle sleeve, connecting adjustment disk 6 in season, on this dish, 15 ° at every interval is printed on solar term, and a week is 24 solar term, is the datum line in season with the globe bracket, to be as the criterion in season of China.

Connect bulb switch, because the effect of rotation light shield, left hemisphere does not work, and right hemisphere is luminous, is signifying that this moment, left hemisphere was in night, and right hemisphere is in daytime.The hand push spheroid rotates a circle, because the rotation light shield does not change, so spheroid all is illuminated once, simulates earth rotation with this everywhere.

Because the existence of ecliptic obliquity is so bulb shown in Figure 1 mainly is radiated near the tropic of Cancer, it also is the limit that bulb impinges upon the terrestrial globe Northern Hemisphere, in season in the Summer Solstice of China (June 22) just this moment, this moment, " Summer Solstice " was facing to the solar term datum line on the season adjustment disk.When by turning clockwise season during 90 ° of adjustment disks, shift fork driven rotary light shield is half-twist also, and at this moment bulb light mainly is radiated near the equator.Be the season in the Autumnal Equinox of China at this moment, on the season adjustment disk, " Autumnal Equinox " is facing to the datum line in season.Continue again by turning clockwise 90 ° of adjustment disks, at this moment light shield forwards the right side to, and the light of bulb mainly is radiated near the tropic of Capricorn, it also is the limit that bulb impinges upon the Southern Hemisphere, just in time be the season in Winter Solstice of China this moment, and this moment, " Winter Solstice " was facing on the season datum line on the season adjustment disk.By that analogy, rotation one week of adjustment disk just in time is 1 year, is used for the simulation revolution of earth, is a very teaching aid of imagery.

Simultaneously because spheroid is translucent, and there is bulb inside, so the utility model can also be used as desk lamp, and is for household use.

The 13rd, base, its appearance is the dove of peace, is used for signifying world peace.

The utility model compared with prior art has the following advantages:

1, can demonstrate visually earth rotation and revolution, and then disclose the principle of earth generation Four seasons change;

2, function increases, and the utility model is a kind of teaching aid still not, also can be used as desk lamp.

Claims (2)

1, a kind of terrestrial globe, it is by spheroid, composition such as globe bracket and base, it is characterized in that: the center in spheroid, a bulb is arranged, bulb is fixed on the vertical lamp stand, the lower end of lamp stand, by the arc bridge plate, be fixed on the lower fulcrum of globe bracket, in spheroid inside, there is a radius to be slightly less than spheroid, and the semisphere rotation light shield concentric with spheroid, vertical side stands in the spheroid, and on lamp stand, its upper end uses bearing fixing on baffle bracket with bearing fixing in its lower end, the other end of baffle bracket, be fixed on the last fulcrum shaft of globe bracket, the inside surface at light shield scribbles reflectorized material, outside surface at light shield, also have a shift fork hole, insert in the shift fork hole lower end of shift fork, and the upper end of shift fork is connected with the lower end of last fulcrum axle sleeve, upper end at axle sleeve, connecting the adjustment disk in season, on this dish, 15 ° at every interval, be printed on solar term, a week is 24 solar term.

2, terrestrial globe according to claim 1 is characterized in that: in the inside of rotation light shield, and sticking tinfoil.

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