Device for demonstrating sun irradiation on earth in geography teaching

Abstract

The utility model discloses a sun irradiation earth demonstration device in geography teaching. The sun irradiation earth demonstration device comprises a demonstration box, a sun simulation part and an earth simulation part. One-way irradiation is achieved through the area light source, the illumination direction is locked through the light locking box, light is absorbed through the light absorption layer, light interference caused by disorder of the irradiation direction and light reflection is avoided, and then a day and night boundary can be clearly displayed. A light locking box provided with an area light source is connected with a linear sliding rail between the display box, so that the area light source moves up and down, and the change and comparison of light irradiation on the earth simulation sphere are realized by adjusting the light irradiation height; the drill rod is obliquely arranged, and the earth simulation sphere is arranged on the drill rod to visually display the yellow-red intersection angle.

Description

TECHNICAL FIELD

[0001] The utility model relates to teaching aid technical field, especially in geographical teaching in a solar radiation earth demonstration device. BACKGROUND

[0002] In the teaching content of middle school geography subject, the astronomical positional relationship between the sun and the earth is involved, and the geographical and astronomical concepts such as equator, ecliptic, sun direct point, north tropic, south tropic and true horizon plane are involved in detail. These knowledge concepts need considerable spatial imagination ability, and only through words and illustrations, middle school students cannot understand well. Therefore, a way to solve this problem is to simulate through teaching aids.

[0003] Among the existing patents, a Chinese patent (patent name: a geographical teaching demonstration instrument; patent application number: CN202323005197.1) provides a demonstration device related to simulating the sun, the earth and the moon. This device is mainly used to demonstrate the rotation and revolution relationship of the sun, the moon and the earth. In specific use, it cannot meet the following needs:

[0004] 1. The light rays are chaotic, there is light interference, and the day and night demarcation line (the position where the sun can shine and the position where the sun cannot shine) cannot be clearly and visibly displayed;

[0005] 2. The position change of the sun (the part that emits light) cannot be adjusted to achieve contrast;

[0006] 3. The ecliptic angle cannot be displayed. Utility model content

[0007] In view of the above-mentioned deficiencies of the prior art, such as chaotic light, light interference, and inability to clearly and visibly display the day and night demarcation line, the utility model provides a geographical teaching solar radiation earth demonstration device, and the scheme is as follows:

[0008] The utility model relates to a demonstration device for the sun irradiating the earth in geography teaching, which comprises a display box, a simulated sun part and a simulated earth part.

[0009] In some preferred embodiments, the device further comprises an adjusting member, which comprises an adjusting screw and a conical extrusion body. The adjusting screw passes through the side panel of the display box and is threadedly connected with the side panel. One end of the adjusting screw inside the display box is connected with the extrusion body, and the outer circumferential surface of the extrusion body abuts against the upper end edge of the light-locking box. A compression spring is arranged inside the display box, one end of the compression spring is connected with the bottom end of the light-locking box, and the other end of the compression spring is connected with the bottom surface inside the display box.

[0010] In some preferred embodiments, the earth simulation ball is a hollow ball, and a rotation driving motor is arranged inside the earth simulation ball. The output end of the driving motor is connected with a speed change mechanism, the output end of the speed change mechanism passes through the shell of the earth simulation ball and is fixedly connected with a connecting sleeve, the connecting sleeve is fixedly connected to the surface of the earth simulation ball, and the output end of the speed change mechanism is rotatably connected with the shell of the earth simulation ball.

[0011] In some preferred embodiments, the rotation driving motor is fixedly connected to the upper end of the drill rod.

[0012] In some preferred embodiments, a diffusion plate is arranged inside the light-locking box, and the diffusion plate is located between the surface light source and the opening.

[0013] Advantages:

[0014] 1. The utility model realizes one-way irradiation through the surface light source, locks the light irradiation direction through the light-locking box, absorbs light through the light-absorbing layer, avoids interference caused by the disorder of the irradiation direction and the reflection of light, and clearly displays the day-night demarcation line.

[0015] 2. The utility model discloses a lock light box and the linear slide rail connection between the display box are set with surface light source, realize the up-down movement of surface light source, and then realize the change and contrast of light irradiation on the earth simulation sphere through adjusting the light irradiation height.

[0016] 3. Through the inclination setting of the drill rod, and setting the earth simulation sphere on the drill rod to visually display the angle between the equator and the prime vertical. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of an embodiment of the utility model.

[0018] Figure 2 It is the structure schematic diagram of the internal components of an embodiment of the utility model.

[0019] Figure 3 It is the setting structure schematic diagram of the rotation drive motor in an embodiment of the utility model.

[0020] Figure 4 It is the setting structure schematic diagram of the lower end of the drill rod in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The utility model will be further described in connection with the drawings and embodiments:

[0022] Reference Figures 1-4 As shown in the figure, a kind of solar irradiation earth demonstration device in geography teaching, including display box 100, simulation sun part 200 and simulation earth part 300.Simulation sun part 200 is used to simulate sun, and simulation sun light is simulated by emitting light.Simulation earth part 300 is used to simulate earth, and the light from simulation sun part 200 is received, and then the simulation sun light irradiation earth is realized.Simulation sun part 200 and simulation earth part 300 are all set in display box 100.

[0023] As Figure 1 As shown in the figure, the front end of display box 100 is provided with glass window 110, and the upper end of display box 100 is provided with detachable cover plate 120.Glass window 110 is used to facilitate from outside to inside observation demonstration in display box 100.Cover plate 120 is used to cap entire display box 100 on the upper end of display box 100.

[0024] As Figure 2As shown, the simulated sun part 200 includes a light blocking box 210, the light blocking box 210 is provided with an opening 211, and the opening 211 faces the simulated earth part 300, and the light blocking box 210 is provided with a surface light source 220, and the surface light source 220 faces the opening 211. The surface light source 220 is used to simulate the sun, and the light emitted by the surface light source 220 is used to simulate sunlight. The surface light source 220 is arranged in the light blocking box 210, and the opening 211 is arranged on the light blocking box 210, so that the light blocking box 210 blocks the light emitted in multiple directions of the surface light source 220, and only emits light from the direction of the opening 211, thereby realizing that the emitted light is in a unique direction, and the light pollution caused by reflection is avoided.

[0025] As shown in Figure 2 The light blocking box 210 is connected to the display box 100 through a linear slide rail 230, so that the light blocking box 210 can move up and down as a whole. The light blocking box 210 is connected to the display box 100 through the linear slide rail 230, and moves linearly up and down, thereby adjusting the height of the light emitting position of the surface light source 220, and the light irradiation to the simulated earth part 300 realizes contrast and distinction.

[0026] As shown in Figures 2-3 The simulated earth part 300 includes a drill rod 310, the lower end of the drill rod 310 is rotatably connected to a positioning part 320, the positioning part 320 is fixedly arranged on the bottom surface in the display box 100, the positioning part 320 is provided with an inclined stop surface 321 for limiting the rotation position of the drill rod 310, and the drill rod 310 is rotatably provided with an earth simulation sphere 330. The drill rod 310 is used to support the earth simulation sphere 330, and the earth simulation sphere 330 is used to simulate the earth. The positioning part 320 is used to arrange the drill rod 310, and when the drill rod 310 is rotated to the stop surface 321 to realize the stop, the drill rod 310 is in an inclined state, and the included angle between the drill rod 310 and the horizontal direction is 90° minus the oblique angle.

[0027] As shown in Figure 2 The bottom surface, side surface and top surface of the display box 100 close to the simulated earth part 300 are all provided with a black light absorbing layer 400, and the light absorbing layer 400 is made of textile. When the light irradiates on the light absorbing layer 400, the light is absorbed by the black color, and the reflection is greatly reduced, thereby avoiding additional light irradiation on the earth simulation sphere 330, and avoiding light interference, so that the sensitive difference on the earth simulation sphere 330 is clearer, and the day and night boundary is clearer.

[0028] In some preferred embodiments, as shown in Figure 2 The light absorbing layer 400 is made of black fluffy fabric.

[0029] In some preferred embodiments, as shown in Figure 2As shown, the adjusting member 600 comprises an adjusting screw 610 and a tapered extrusion body 620, the adjusting screw 610 passes through the side panel of the display box 100 and is threadedly engaged with the side panel, one end of the adjusting screw 610 inside the display box 100 is connected to the extrusion body 620, and the outer peripheral surface of the extrusion body 620 abuts against the upper end edge of the light-locking box 210; the compression spring 500 is arranged inside the display box 100, one end of the compression spring 500 is connected to the bottom end of the light-locking box 210, and the other end is connected to the bottom surface inside the display box 100. In specific implementation, the compression spring 500 is used to push the light-locking box 210 upward, and in the absence of external force, the light-locking box 210 will move upward along the linear slide rail 230. The extrusion body 620 presses the light-locking box 210 downward through the tapered outer peripheral structure thereof. The adjusting screw 610 rotates to drive the extrusion body 620 to advance or retreat, thereby pressing the extrusion body 620 downward or relaxing the extrusion body 620 upward, so as to realize the cooperation of the extrusion body 620 and the compression spring 500, and make the light-locking box 210 move upward or downward.

[0030] In some preferred embodiments, as shown in Figure 3 As shown, the earth simulation sphere 330 is a hollow sphere, and the self-rotation driving motor 340 is arranged inside the earth simulation sphere 330, the output end of the driving motor 340 is connected with a speed change mechanism 350, the output end of the speed change mechanism 350 passes through the spherical shell of the earth simulation sphere 330 and is fixedly connected with a connecting sleeve 360, the connecting sleeve 360 is fixedly connected to the surface of the earth simulation sphere 330, and the output end of the speed change mechanism 350 is rotatably connected with the spherical shell of the earth simulation sphere 330. In specific implementation, the driving motor 340 outputs a rotating speed to the speed change mechanism 350, the rotating speed is reduced by the speed change mechanism 350 and then output to the connecting sleeve 360, and the rotation of the connecting sleeve 360 drives the earth simulation sphere 330 to rotate. A bearing is arranged between the output end of the speed change mechanism 350 and the earth simulation sphere 330 to realize the rotatable connection.

[0031] In some preferred embodiments, the connecting sleeve 360 is in a cylindrical shape, the output end of the speed change mechanism 350 extends into the connecting sleeve 360 and is fixedly connected to the top of the connecting sleeve 360. The lower end edge of the connecting sleeve 360 is fixedly connected to the surface of the earth simulation sphere 330.

[0032] In some preferred embodiments, as shown in Figure 3 As shown, the self-rotation driving motor 340 is fixedly connected to the upper end of the drill rod 310 to stably arrange the self-rotation driving motor 340.

[0033] In some preferred embodiments, a diffusion plate 240 is arranged in the light-locking box 210 and is located between the surface light source 220 and the opening 211. The diffusion plate 240 functions to harmonize the light so that the light is more uniform after being transmitted, and the light on the earth simulation sphere 330 is more uniform.

[0034] The light-locking box 210 and the surface light source 220 can move up and down, the position of the light is adjusted up and down, and the movement and division of the light position on the earth simulation sphere 330 are realized. Under the combined action of the light-locking box 210 and the light-absorbing layer 400, the light-dark division on the earth simulation sphere 330 is obvious, and the day-night division line is clearly displayed.

[0035] The preferred embodiments of the utility model are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the utility model should be within the protection scope defined by the claims.

Claims

1. A device for demonstrating the sun's illumination of the earth in a geography lesson, characterized in that The device comprises a display box (100), a simulated sun part (200) and a simulated earth part (300); A glass window (110) is arranged at the front end of the display box (100), and a detachable cover plate (120) is arranged at the upper end of the display box (100); The simulated sun part (200) comprises a light-locking box (210) provided with an opening (211) facing the simulated earth part (300), and a surface light source (220) is arranged in the light-locking box (210) and faces the opening (211); the light-locking box (210) is connected to the display box (100) through a straight-line slide rail (230) so that the light-locking box (210) can move up and down as a whole. The simulated earth part (300) comprises a drill rod (310) with a lower end rotatably connected to a positioning part (320) fixedly arranged on the bottom surface in the display box (100), and the positioning part (320) is provided with an inclined stop surface (321) for limiting the rotation position of the drill rod (310); an upper segment of the drill rod (310) is circumferentially rotatably provided with a simulated earth sphere (330). A black light-absorbing layer (400) is arranged on the bottom surface, side surface and top surface of the display box (100) near the simulated earth part (300), and the light-absorbing layer (400) is made of textiles.

2. The device for demonstrating the sun's irradiation on the earth in geographical teaching according to claim 1, further comprising an adjusting member (600) comprising an adjusting screw (610) and a conical extrusion body (620), the adjusting screw (610) passes through the side panel of the display box (100) and is threadedly connected to the side panel, one end of the adjusting screw (610) in the display box (100) is connected to the extrusion body (620), and the outer circumferential surface of the extrusion body (620) abuts against the upper end edge of the light-locking box (210). A compression spring (500) is arranged in the display box (100), one end of the compression spring (500) is connected to the bottom end of the light-locking box (210), and the other end is connected to the bottom surface in the display box (100). The simulated earth sphere (330) is a hollow sphere, a self-rotation driving motor (340) is arranged in the simulated earth sphere (330), a speed-changing mechanism (350) is connected to the output end of the driving motor (340), the output end of the speed-changing mechanism (350) passes through the spherical shell of the simulated earth sphere (330) and is fixedly connected to a connecting sleeve (360) fixedly connected to the surface of the simulated earth sphere (330), and the output end of the speed-changing mechanism (350) is rotatably connected to the spherical shell of the simulated earth sphere (330).

3. The demonstration device for teaching geography of the solar radiation of the Earth according to claim 1, characterized in that: The self-rotation driving motor (340) is fixedly connected to the upper end of the drill rod (310).

4. The demonstration device for teaching geography of the solar radiation of the Earth according to claim 3, characterized in that: ​ 5. The demonstration device for teaching geography of the solar radiation of the Earth as claimed in claim 1, characterized in that: The light-locking box (210) is provided with a diffusion plate (240), and the diffusion plate (240) is located between the surface light source (220) and the opening (211).

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