JPH0339803Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The disclosed technology belongs to the technical field of optical learning materials used as appendices of learning magazines for children in the lower grades of elementary school (hereinafter referred to as "school children").

This device is used as a pinhole camera in which a cylindrical body and a cap that holds a pinhole plate at the end of the cylindrical body are detachable, and a screen plate is held inside the cylindrical body via a holder so that it can be attached freely. This is an invention regarding an optical learning set for teaching materials that can be used, in particular,
This invention relates to an optical learning set for teaching materials that can be used as a spectroscope, and includes a slit plate that is detachably held between the cylinder and the cap, and a prism that is fixed within the cylinder via a bracket.

<Prior Art> As is well known, educational magazines play a complementary role in school education, and their contents tend to become more sophisticated.

In recent years, as microcomputers have become commonplace in ordinary households, mere toys or appendices are not only unable to increase school children's desire to learn, but may even undermine their desire to learn.

Traditionally, educational materials for various learning purposes such as optical learning and mechanical learning have been used in the supplements of the above-mentioned learning magazines. For example, if the teaching material is for optical learning, pinhole cameras etc. are used. Something happened.

<Problems to be solved by the invention> However, in the case of the optical learning set for teaching materials based on the above-mentioned conventional technology, although it is possible to learn about the straightness of light as a pinhole camera, it is difficult to learn about refraction which is another property of light. It had the disadvantage that it was not possible to learn about gender, etc., and that it did not produce sufficient learning effects.

On the other hand, it is possible to incorporate parts for learning other properties of light into the teaching materials, but it is difficult to assemble the parts and precision is required to produce experimental effects. The problem was that it was difficult for school children to assemble.

In addition, there was a disadvantage in that the more precision required for parts, the higher the cost.

The purpose of this invention was to solve the technical problems of the optical learning set for teaching materials based on the above-mentioned conventional technology, and to provide a set that not only allows sufficient optical learning with one set but also can be assembled easily. The objective is to provide an excellent optical learning set for educational materials that will benefit the field of educational material use in industry.

<Means/effects for solving the problem> In accordance with the above-mentioned purpose, the structure of this invention, which is based on the scope of the above-mentioned utility model registration claim, is to solve the above-mentioned problem. When a pinhole plate is held between a cap attached to the cylinder body and a screen plate is attached to the inside of the cylinder body through a bracket, an inverted pinhole image is created on the screen by the light incident from the pinhole. In addition, if a slit plate is sandwiched between the cylinder and the cap and a prism is fixed through a bracket inside the cylinder, the prism will refract the light. This is a technical measure that enables the observation of the spectroscopy of light.

<Embodiment - Configuration> An embodiment of this invention will be described below based on the drawings.

What is shown in FIG. 1 is a pinhole camera 1 assembled using an optical learning set for educational materials, which constitutes the gist of this invention. Fit it,
An inner cylinder 5 as a holder is inserted into the other end of the outer cylinder 2.

As shown in FIG. 2, the outer cylinder 2 is made of black cardboard, and the cap 3 is fitted with a pinhole plate 4 having pinholes 6, and the rough surface effect and elasticity of the paper forming the outer cylinder 2 are used. It is designed to be easily and securely fitted.

On the other hand, as shown in FIG. 3, a screen plate 9 is fitted into the inner cylinder 5, which is made of black paper like the outer cylinder 2, and which is attached via a cap 7 and a C-ring 8. It's becoming like that.

Note that a notch 10 for air release is formed on the outer periphery of the screen plate 9, and one surface is roughened.

As shown in FIG. 4, the pinhole camera 1 is assembled by sliding the end of the inner tube 5 on the screen plate 9 side into the outer tube 2 thus formed.

In this case, by sliding the inner cylinder 5 with respect to the outer cylinder 2, the size of the image on the screen or
Focus can be adjusted.

Further, the notch 10 in the screen plate 9 of the inner cylinder 5 allows smooth air circulation between the inner cylinder 5 and the outer cylinder 2, so that the sliding operation is not hindered.

Moreover, since the screen plate 9 is located inside the inner tube 5, incident light from the outside is blocked, so that it is not difficult to confirm the image.

Next, FIGS. 5 and 6 show a spectrometer 11 assembled using the parts of the pinhorn camera 1 described above, in which a slit plate 12 is attached to the cap 3 instead of the pinhole plate 4 described above. The bracket 13 is then fitted onto the outer cylinder 2 with the bracket 13 held therebetween.

As shown in FIG. 7, the bracket 13 includes a support plate 14 attached to the cap 3 and clamped by the outer cylinder 2 together with the slit plate 12, and a U-shaped guide 16 fitted into the locking portion 15 of the support plate 14. , and a holding plate 19 that holds a prism 17, which will be described later, with its triangular hole 18.

Incidentally, a square hole 20 is bored in the support plate 4.

As shown in FIG. 8, the prism 17 has a resin case 21 in the shape of a transparent triangular cylinder with a bottom, and a rubber blind cap 22 that can be freely fitted into the resin case 21.
As shown in FIG. 9, water 23 as a liquid is filled, and the holding plate 19 is inserted into the hole 18 of the holding plate 19 shown in FIG. 10 and positioned at a predetermined position.

The prism 17 supported by the holding plate 19 can be easily positioned relative to the slit plate 12 by simply inserting the holding plate 19 onto the bottom wall of the guide 16.

<Embodiment - Effect> When the pinhole camera 1 is assembled in this manner, by checking the inverted image projected on the screen board 9, school children can see that the light passing through the pinhole 6 travels straight. By doing this, you can learn how to turn the statue upside down.

Moreover, by sliding the inner cylinder 5 and changing the distance between the pinhole 6 and the screen plate 9, it can be confirmed that the size of the image changes.

Also, when assembled as a spectrometer 11, the fifth
If you point the slit plate 12 toward the sun as shown in the figure,
The light passing through the prism 17 and being refracted can be observed, and the spectrum 24 can also be seen on the side of the guide 16, indicating that sunlight, which is white light, is actually a combination of multiple monochromatic lights of different colors. can be confirmed through experience.

Therefore, questions about the occurrence of spectrum 24 can be of great help in increasing motivation for subsequent learning, and although it is just one teaching material, it can be used effectively, and moreover, it can serve a complementary role in learning from multiple directions.

In addition, assembly is extremely easy, and the prism 1
7 also accommodates water 23, so it can be manufactured at low cost.

<Other Examples> It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments, and various embodiments can be adopted, for example, the prisms may be formed of solid transparent resin. It is.

<Effects of the invention> As described above, this invention basically complements science learning in school education because learning about the properties of light in optics can be done from multiple directions and can increase school children's motivation to learn. The excellent effect of being able to do this is achieved.

Further, the cylinder and the cap for holding the pinhole plate at the end of the cylinder are removable, and the screen plate can be installed inside the cylinder through a holder. It has a slit plate that is removably held between the cap and a prism that is fixed inside the cylinder via a bracket, so it can be used as a pinhole camera to learn about the straightness of light. It can also be used as a spectrometer to observe the spectrum produced by refracting light, and has an excellent effect of being extremely useful as a teaching material for understanding the properties of light such as natural light.

[Brief explanation of the drawing]

The drawings show an example of this invention.
Figure 1 is a perspective view when assembled as a pinhole camera, Figures 2 to 4 are assembly status diagrams, Figure 5 is a perspective view when assembled as a spectrometer, Figures 6 and 7 are of the outer cylinder side. FIG. 8 is a perspective view of the prism, and FIGS. 9, 10, and 11 are explanatory diagrams of the assembly situation. 2... Cylindrical body, 4... Pinhole plate, 3... Cap, 5, 7, 8... Holder, 9... Screen plate, 12... Slit plate, 13... Bracket,
17...prism, 5...inner cylinder, 23...liquid,
21...case, 22...blind cap.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical body and a cap that holds a pinhole plate at the end of the cylindrical body are detachable, and a screen plate can be attached to the inside of the cylindrical body via a holder. An optical learning set for teaching materials, characterized in that it has a slit plate that is detachably held between the cylindrical body and the cap, and a prism that is fixed within the cylindrical body via a bracket. Optical learning set for. (2) The optical learning set for teaching materials according to claim 1, wherein the holder has an inner tube that is slidably fitted into the cylindrical body. (3) Claim 1 or 2 of the above utility model registration claim characterized in that the prism has a transparent case in which a liquid is contained and a blind cap.
Optical learning set for teaching materials listed in section.