JPH0525634Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ball made of an air-filled synthetic resin sheet, such as a vinyl beach ball, which expands and contracts when air is introduced or exhausted.

(Prior art) Conventionally, a hollow ball having a large number of small hemispherical protrusions on the inner surface of the wall, which does not require an air injection valve or a navel for expansion and contraction, was proposed in Japanese Utility Model Publication No. 47-27657. Furthermore, a hollow ball having a pattern or the like provided on the inner surface of the ball body is disclosed in Japanese Utility Model Publication No. 1448/1983.

(Problems to be solved by the invention) The former described in the above conventional technology cannot be crushed and is inconvenient for packaging and storing, and the large number of small hemispherical projections on the inner surface of the wall are individually Fluorescent halos due to spherical aberration are emitted from each other, creating a mysterious beauty, but because these protrusions are small and convex, an image is not visible to the viewer from the outside in each eyelet in the compound eye. It is not possible to express an image that appears to be coming (an image where one goldfish (picture) existing inside appears to be many).

In addition, the latter allows images, etc. provided on the inner surface to be seen through the sheet wall surface, and does not display images as described above.

This invention is a new pneumatic synthetic resin sheet ball that is designed to present an image to the eyes of the viewer from the outside, such as a single goldfish (picture) inside looking like many goldfish. The purpose is to provide

(Means for Solving the Problems) In order to achieve the above object, the ball made of pneumatic synthetic resin sheet according to the present invention is composed of a large number of concave Fresnel lenses constructed by providing a large number of annular lenses in a concentric arrangement. The ball body is constructed by airtightly joining a lens wall piece made of a transparent synthetic resin sheet and a non-lens wall piece made of a synthetic resin sheet with It has a picture or text placed in a place that can be seen through the lens.

(Embodiment) In the first embodiment shown in FIGS. 1 to 3, a large number of concave Fresnel lenses 2 formed into a rectangular shape by providing a large number of annular lenses 1 in a concentric arrangement are provided on the entire inner surface. A transparent synthetic resin sheet arranged in a checkered pattern is cut into three leaf-shaped A small pieces 3
A separate opaque synthetic resin sheet with a pattern 4 printed on its inner surface is cut to form three leaf-shaped B pieces 5, and these leaf-shaped A pieces 3 and leaf-shaped B pieces 5 are alternately arranged. The beach ball 7 was completed by arranging the concave Fresnel lens 2 and the pattern 4 so that they were both on the inside, and by attaching the supply and exhaust plug 6. The embodiment uses a leaf-shaped C piece 9 in which a concave Fresnel lens 8 having a round shape is provided in a polka dot pattern and the leaf-shaped B piece 5 described above.

(Function) A concave Fresnel lens changes its reflection condition, that is, the intensity of brightness, and the shape and position of the bright part, as the viewing angle from the outside changes. When viewing the pattern 4 from the outside through the lens, the pattern 4 is reduced and imaged onto a plurality of concave Fresnel lenses, and the viewer sees the pattern 4 inside as a reduced pattern 4' on each of the small eyes of the compound eye. Create a state of expression.

(Effects of the invention) As mentioned above, the air-filled synthetic resin sheet ball according to the invention has a concave Fresnel lens that expresses a checkerboard pattern or a polka dot pattern, and also has a transformation function and a function that makes it appear as if you are seeing with compound eyes. It has originality and novelty, is interesting and unique, has high commercial value, and has completely achieved the intended purpose of providing a new ball made of pneumatic synthetic resin sheets. In addition, since the Fresnel lens in this invention is a concave type, there is no danger of causing a fire or burning out the eyes, unlike a convex type. In addition, since the concave Fresnel lens is formed by installing a large number of annular lenses on the inner surface of the wall, it is difficult for dust and dirt to adhere to the concave grooves formed between these annular lenses. It has advantages.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing the first embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
The figure is an enlarged cross-sectional view of the concave Fresnel lens part.
FIG. 4 is an overall perspective view showing the second embodiment. 1... Annular lens, 2... Concave Fresnel lens, 3... Leaf-like A small piece, 4... Pattern, 5...
Leaf-like B small piece, 6... Inlet/exhaust plug, 7... Beach.
Ball, 8... Concave Fresnel lens, 9...
Leafy C pieces.

Claims (1)

[Scope of utility model registration request] A small piece for a lens wall made of a transparent synthetic resin sheet and a small piece for a non-lens wall made of a synthetic resin sheet, each of which has a large number of concave Fresnel lenses on the back surface formed by providing a large number of annular lenses in a concentric arrangement, are airtight. A ball made of an air-filled synthetic resin sheet, characterized in that it has a ball body formed by joining together, and a pattern or letters provided on a non-lens wall piece at a location visible from the outside through the concave Fresnel lens.