JP3031646U - Retractable film viewer - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: A retractable film viewer that uses a reflection mirror that is lightweight, foldable with one touch, and that is easy to assemble, and that can be manufactured at low cost by injection molding synthetic resin. To provide. An opening / closing type film viewer using a mirror is characterized by comprising a synthetic resin projector case, a light diffusing screen, and a reflection mirror base, and a reflection mirror provided on the reflection mirror base.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention is a retractable film viewer that uses a reflective mirror that is lightweight, convenient to carry and can be folded with one touch, and is inexpensive to manufacture.

[0002]

[Prior art]

 Conventionally, there have been various ideas for a film viewer device that allows one person or multiple people to observe it at the same time using a light source.However, a portable film viewer device that uses a mirror by installing a reflection mirror in the device has been proposed. Not at all. Specific examples of a simple film viewer are, for example, Japanese Utility Model Laid-Open No. 61-206914, Japanese Utility Model Laid-Open No. 62-91621 and Japanese Utility Model Laid-Open No. 63-187115. However, each of them is a see-through type for observing through a lens, which is different from the present invention which utilizes reflection of light.

For example, Japanese Utility Model Application Laid-Open No. 61-206914 discloses a foldable pyramid-type film see-through device, which observes light reflected by a mirror of the present invention by seeing through a lens facing a film. It is completely different from what you do. It is foldable for convenient portability, but it is complicated because it can be folded in four steps on the left, right, top and bottom.

Further, Japanese Utility Model Laid-Open No. 62-91621 discloses a portable film magnifying glass in which a film is provided at the end of a cylindrical body of synthetic resin and a magnifying lens is provided at the other end. It is a see-through method through which the format is completely different from the reflection method of the present invention. In addition, although it is made of synthetic resin, it is cylindrical and is inconvenient to carry.

Further, Japanese Utility Model Laid-Open No. 63-187115 discloses an assembling type slide viewer, which is a perspective system because a film is arranged on one side of a rectangular parallelepiped and a lens is arranged on the other side, which is inconvenient to carry. There is.

[0006]

[Problems to be solved by the present invention]

 It is a lightweight, foldable with one touch, and an openable film viewer that uses a mirror that is easy to assemble, and is manufactured by injection molding the projector case, light-spreading screen and reflective mirror base using synthetic resin. We provide the retractable film viewer at low cost.

[0007]

[Means for Solving the Problems]

 The gist of the present invention is (1) a projector case made of a synthetic resin, a light diffusing screen, and a reflection mirror base portion. A reflection mirror is provided on the reflection mirror base portion to provide an opening / closing type film viewer using the mirror. Is.

[0008]

[Embodiment of device]

 Embodiments of the invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of a retractable film viewer according to the present invention. A projector case 1 comprises a main body 1a and a lid 1b, the projector case 1, a light diffusing screen 3 and a reflection mirror base portion 2. Is integrally molded by injection molding, and the reflection mirror 10 is provided on the reflection mirror base 2. A holding portion 8 for holding the mounted positive film 4 is provided on the back side of the light diffusion screen 3, and 5 indicates a hook for fixing the opening degree, and 6 indicates a hook when closed. Is. 2 is a development view of the central portion of FIG. 1 taken along the line AA′-A ″. FIG. 3 shows a holding portion 7 for holding the positive film 4 with a mount provided on the front side of the light diffusing screen 3. The positive film 4 with a mount is held on this so that it can be observed from the side of the film, and a holding portion 8 for holding the positive film 4 with a mount is provided on the back side of the light diffusing screen 3. A positive film 4 with a mount is held on the film, and the film can be observed by the light reflected by the reflection mirror 10.

The reflecting mirror 10 provided on the reflecting mirror base 2 may be a glass or synthetic resin mirror, but a synthetic resin single-layer or double-layer metal vapor-deposited adhesive sheet is used. It is easy to use and stick together. Further, the reflecting mirror 10 may be a plane mirror or a concave mirror, but in the latter case, it is preferable because the image of the film is enlarged and can be seen more clearly.

Further, the projector case 1 of FIG. 1 is composed of a main body 1a and a lid 1b, and is made of a synthetic resin integrally injection-molded product connected by a thin hinge at A ′ in the sectional development view shown in FIG. It can be assembled. A holding portion 8 for fixing the light diffusing screen 3 and the positive film 4 with a mount is provided on the main body 1a side, and a reflection mirror 10 is provided on the reflection mirror base portion 2 inside the lid 1b.

Further, when assembling the projector case, a hook 5 for fixing the opening may be attached to the side surface, and a hook 6 for keeping the closed state when the projector case is closed may be attached to the front side surface. .

As the synthetic resin used for the projector case, translucent polypropylene resin, polyethylene resin, ABS resin or the like is desirable, and the light diffusing screen can be integrally molded at the same time. Therefore, after that, all that is required is to provide a reflection mirror, and for example, to attach a mirror sheet to it, the manufacturing cost can be made extremely low.

When an opaque resin is used for the projector case, it is necessary to use a light diffusion sheet as a separate component for the light diffusion screen, but the case itself serves as a dark curtain to make the image of the film clearer. Therefore, it is preferable.

It is preferable that the hinge portion has a length of 1.0 to 5.0 mm and a wall thickness of 0.2 to 0.8 mm, and if it is less than these ranges, it is difficult to perform integral molding. It is difficult to open and close smoothly.

In the case of a polystyrene resin or an ABS resin having a weak hinge portion, the main body of the projector case and the lid are not connected by a hinge, and a concave and convex fitting portion is provided at the end of the main body and the lid to form a molded product. You can assemble it.

The reflection mirror base may be molded by a mold having a mirror finish, and a mirror sheet for a reflection mirror may be attached to the surface of the molded product to form a reflection mirror. At this time, the reflection mirror base may be a flat surface, a quadric surface obtained by bending the flat surface, or a cubic surface such as a spherical surface. When a secondary or tertiary concave mirror is used, a radius of about 500 mm is good and the image on the film is enlarged so that it can be seen more clearly.

The mirror sheet used for bonding is, for example, a two-layer laminate sheet of polycarbonate resin and vinyl chloride resin, or a single-layer sheet of polycarbonate resin or acrylic resin, etc. However, it is suitable that the wall thickness is about 0.1 to 0.8 mm. If it is thin, the base will appear, and if it is thick, it will be difficult to fit it to the spherical surface.

When it is desired to further increase the resolution of the film, it is preferable to use a polycarbonate resin sheet having a light diffusion screen and a light diffusion process and a thickness of about 0.4 mm.

A protective cover may be attached to the main body side of the projector case in order to protect the light diffusing screen when carrying the projector.

[0020]

【Example】

 (Example 1) In FIG. 1, a main body 1a and a lid 1b of a projector case 1 of ABS resin are molded at the same time, and a reflection mirror base 2 has a two-layer laminated sheet of polycarbonate resin and vinyl chloride resin with a thickness of 0.5 mm. As a reflection mirror 10, the mirror sheet of No. 1 was laminated, and an opening / closing type film viewer using a light diffusion screen 3 having a sheet thickness of 0.4 mm of a sheet subjected to a light diffusion treatment of a polycarbonate resin was prepared. When the positive film 4 with the mount is inserted into the holding part 7 provided on the front side of the light diffusing screen part and observed from the light diffusing screen 3 side toward the indoor window side as shown in FIG. The contents were visible. Further, as shown in FIG. 4, when the mountable positive film 4 was inserted into the holding portion 8 provided on the back side of the light diffusing screen portion and observed from the reflection mirror 10 side, the content of the film was visually recognized more clearly.

Example 2 Using a polypropylene resin, the projector case 1 shown in FIG. 1, the R500 mm reflection mirror base 2 and the light diffusing screen 3 were integrally injection-molded, and a polyethylene terephthalate resin having a thickness of 0.3 mm was used. An openable film viewer was created by attaching a mirror sheet to the reflection mirror base 2. When observed from the reflection mirror side of FIG. 4 toward the indoor window side, a clear magnified image of the film was visually recognized.

[0022]

[Effect of device]

 As is apparent from the above description, the present invention has the following effects. Since it does not use batteries or light bulbs, it is small and lightweight, and it is easy to fold, so it is possible to provide a retractable film viewer that is easy to carry. Since it is a viewer, the manufacturing cost is extremely low, and the magnified image of the film can be enjoyed without using a lens, it is possible to provide the opening / closing type film viewer using an extremely safe reflecting mirror.

[Brief description of drawings]

FIG. 1 is a perspective view of the entire openable film viewer.

FIG. 2 is an opening-and-closing type film viewer AA'- of FIG.
It is a sectional development view in A ″.

FIG. 3 is an assembled sectional view when observing from the light diffusing screen side.

FIG. 4 is an assembled cross-sectional view when observing from the reflection mirror side.

[Explanation of symbols]

 1 Projector Case 1a Main Body 1b Lid 2 Reflection Mirror 3 Light Diffusing Screen 4 Positive Film with Mount 5 Hook 6 Hook 7 Holding Part 8 Holding Part 10 Reflecting Mirror

Claims (1)

[Scope of utility model registration request] 1. An opening / closing type film viewer using a mirror, comprising a synthetic resin projector case, a light diffusing screen, and a reflecting mirror base, and a reflecting mirror provided on the reflecting mirror base.