CN205028533U - Persistence of vision principle demonstration instrument - Google Patents
Persistence of vision principle demonstration instrument Download PDFInfo
- Publication number
- CN205028533U CN205028533U CN201520799502.5U CN201520799502U CN205028533U CN 205028533 U CN205028533 U CN 205028533U CN 201520799502 U CN201520799502 U CN 201520799502U CN 205028533 U CN205028533 U CN 205028533U
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- shell
- draw
- light source
- groove
- wheel disc
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Abstract
The utility model relates to a teaching aid of middle school teaching usefulness, specifically speaking is a persistence of vision principle demonstration instrument. Including base, shell and the setting light source in the shell, the front end fixed mounting of shell has a projection curtain plate, and the rear end of shell is provided with reflection of light spherical shell, and the light source setting is in the focus department of reflection of light spherical shell, and the pivot is installed through the axle bed to the lower extreme of shell, and the front end fixed mounting of pivot has the rim plate, and the handle is installed to the rear end of pivot, is provided with the plug -in card window of fretwork on the rim plate, and on the shell, projection curtain plate is provided with the draw -in groove between the spherical shell with reflecting light, the rim plate setting is in the draw -in groove, be provided with trigger switch on the draw -in groove, trigger switch establishes ties at the power end of light source, and the marginal fixed mounting of rim plate bumps the piece. Its simple structure, easy preparation, easy operation can explain in the teaching very directly perceivedly and improve persistence of vision's principle interest in learning, strengthen learning result.
Description
Technical field
The utility model relates to the teaching aid of middle school teaching, specifically a kind of persistence of vision principle demonstration instrument.
Background technology
Human eye is when observing scene, and light signal successor cerebral nerve, need through one of short duration period, and after the effect of light terminates, visual image does not disappear immediately, and this phenomenon of vision is then called as " persistence of vision ".In the middle school teaching stage, multidisciplinary principle or the application relating to persistence of vision such as " nature ", " physics ", " physiological hygiene ".But owing to lacking directly perceived, effective demonstration instrument, be difficult to the learning interest of mobilizing students, knowledge point is grasped firm not, is more difficult to play creationary application.
Summary of the invention
The purpose of this utility model be to provide a kind of structure simple, easily make, persistence of vision principle demonstration instrument simple to operate, reach the object explaining persistence of vision principle intuitively to student, so that improve learning interest, consolidate learning outcome.
In order to reach above object, technical scheme that the utility model adopts is: this persistence of vision principle demonstration instrument comprises base, the light source being fixedly mounted on the shell on base and arranging in the enclosure, described shell is round tube shape structure, the front end of shell is installed with projection screen plate, the rear end of shell is provided with reflective spherical shell, the inwall of described reflective spherical shell is provided with reflector layer, described light source is arranged on the focus place of reflective spherical shell, described shell is horizontally disposed with, the lower end of shell is provided with rotating shaft by axle bed, the front end of described rotating shaft is installed with wheel disc, the rear end of rotating shaft is provided with handle, described wheel disc is provided with the plug-in card window of hollow out, on shell, draw-in groove is provided with between projection screen plate and reflective spherical shell, wheel disc is arranged in draw-in groove, described draw-in groove is provided with trigger switch, and trigger switch is connected on the power end of light source, and the edge of wheel disc is installed with the collision block of match triggers switch.
The spoke that described wheel disc comprises the torus concentric with rotating shaft and is connected between rotating shaft and torus, described toric edge is provided with the strip crevice towards plug-in card window, and spoke is provided with chute.
The beneficial effects of the utility model are: its structure is simple, easily make, simple to operate, can explain the principle of persistence of vision very intuitively, improve learning interest, consolidate learning outcome in teaching.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the right view of Fig. 1 embodiment.
Embodiment
As shown in Figure 1 and Figure 2, the light source 5 that persistence of vision principle demonstration instrument described in the utility model comprises base 9, is fixedly mounted on the shell 1 on base 9 and is arranged in shell 1, this light source 5 can adopt ordinary incandescent lamp to steep, also LED or other electric light sources can be adopted, described shell 1 is round tube shape structure, the front end of shell 1 is installed with projection screen plate 3, and projection screen plate 3 adopts the trnaslucent materials such as ground glass to make.The rear end of shell 1 is provided with reflective spherical shell 11, and the inwall of described reflective spherical shell 11 is provided with reflector layer, and described light source 5 is arranged on the focus place of reflective spherical shell 11.
Described shell 1 is horizontally disposed with, and the lower end of shell 1 is provided with rotating shaft 21 by axle bed, and the front end of described rotating shaft 21 is installed with wheel disc 2, and the rear end of rotating shaft 21 is provided with handle 8, and turning handle 8 can drive wheel disc 2 to rotate.Described wheel disc 2 is provided with the plug-in card window 22 of hollow out, for fixing various figure card.On shell 1, between projection screen plate 3 and reflective spherical shell 11, be provided with draw-in groove, wheel disc 2 is arranged in draw-in groove, and rotates in draw-in groove; Described draw-in groove is provided with trigger switch 7, trigger switch 7 is connected on the power end of light source 5, and this trigger switch 7 controls the switching electricity condition of light source 5.The edge of wheel disc 2 is installed with the collision block 6 of match triggers switch 7.This collision block 6 is exactly the bossing on the edge of wheel disc 2, and when wheel disc 2 rotates time, collision block 6 can touch trigger switch 7, makes it close.Described trigger switch 7 adopts switch open in usual, and its structural principle is known technology, is not described in detail in this.
Described wheel disc 2 comprises the torus concentric with rotating shaft 21 and is connected to the spoke 23 between rotating shaft 21 and torus, and described toric edge is provided with the strip crevice towards plug-in card window 22, spoke 23 is provided with chute 24.Figure card can be inserted easily like this from the round edge of wheel disc 2.
During use, multiple figure cards of same object different conditions are made of lighttight materials such as presspapers, as model, slide on plug-in card window 22 by model by strip crevice and chute 24, light gets to graphics card plate shape model projecting again and projection screen plate 3 can demonstrate hollow out in the middle of model.When slow rotation wheel disc 2, student it is seen that different, the respective independently figure of difference by projection screen plate 3, is improved rotating speed gradually, then can see continuous print animation patterns on projection screen plate 3.
Claims (2)
1. persistence of vision principle demonstration instrument, comprise base (9), the light source (5) being fixedly mounted on the shell (1) on base (9) and being arranged in shell (1), described shell (1) is round tube shape structure, the front end of shell (1) is installed with projection screen plate (3), the rear end of shell (1) is provided with reflective spherical shell (11), the inwall of described reflective spherical shell (11) is provided with reflector layer, described light source (5) is arranged on the focus place of reflective spherical shell (11), it is characterized in that: described shell (1) is horizontally disposed with, the lower end of shell (1) is provided with rotating shaft (21) by axle bed, the front end of described rotating shaft (21) is installed with wheel disc (2), the rear end of rotating shaft (21) is provided with handle (8), described wheel disc (2) is provided with the plug-in card window (22) of hollow out, on shell (1), draw-in groove is provided with between projection screen plate (3) and reflective spherical shell (11), wheel disc (2) is arranged in draw-in groove, described draw-in groove is provided with trigger switch (7), trigger switch (7) is connected on the power end of light source (5), and the edge of wheel disc (2) is installed with the collision block (6) of match triggers switch (7).
2. persistence of vision principle demonstration instrument according to claim 1, it is characterized in that: described wheel disc (2) comprises the torus concentric with rotating shaft (21) and is connected to the spoke (23) between rotating shaft (21) and torus, described toric edge is provided with the strip crevice towards plug-in card window (22), spoke (23) is provided with chute (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520799502.5U CN205028533U (en) | 2015-10-16 | 2015-10-16 | Persistence of vision principle demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520799502.5U CN205028533U (en) | 2015-10-16 | 2015-10-16 | Persistence of vision principle demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028533U true CN205028533U (en) | 2016-02-10 |
Family
ID=55261049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520799502.5U Expired - Fee Related CN205028533U (en) | 2015-10-16 | 2015-10-16 | Persistence of vision principle demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028533U (en) |
-
2015
- 2015-10-16 CN CN201520799502.5U patent/CN205028533U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20161016 |