JP3120608U - Magnifier holder - Google Patents

Abstract

A magnifying glass holder that can be used by replacing lenses with different magnifications.
A lens 11 is mounted on a lens holder 17 having a transparent cover having a holding portion 2 and a lens holding portion 3 provided at the tip thereof and having an opening at the bottom. The lens 11 is directly attached to the lens holding portion. Alternatively, a magnifying glass holder that can be used by replacing a lens having a different magnification by holding it detachably through an adapter.
[Selection] Figure 2

Description

  The present invention relates to a magnifying glass holder, and more particularly to a magnifying glass holder that can be used by replacing lenses having different magnifications by holding the lens detachably.

  Conventionally, a magnifying glass has been used when a presbyopic person with low vision or a low vision person reads or works. For example, in Patent Document 1, a cold cathode discharge tube is arranged inside a lens holding unit along a lens holding unit that holds the lens, and when used in a dim place, the illumination is brightened and the lens is enlarged. An illuminated magnifier is disclosed.

There is also known a method in which a plurality of magnifiers having different magnifications are prepared, and magnifiers having different magnifications are appropriately selected and used according to an object to be viewed.
JP 2002-150802 A

  However, since the magnifying glass with illumination in Patent Document 1 is a magnifying glass in which the lens is fixedly attached to the lens holding portion, there is no problem when used only with the magnification of the attached lens, but with different magnifications. When a magnifying glass is required, a magnifying glass must be prepared for each magnification. Therefore, there has been a problem that storage of the magnifying glass leads to a rise in bulky costs.

  In addition, in the method of appropriately selecting and using a magnifying glass having a desired magnification from a plurality of magnifying glasses having different magnifications, similarly, it is necessary to equip each magnifying glass with a magnifying glass. When used, it is necessary to connect to another lighting device or to illuminate with, for example, a 100 W electric lamp, so the whole is large in the former, and the head is heated in the latter, making it difficult to use for a long time. In addition, there is a problem that uniform illumination is difficult to obtain.

  The present invention has been made in view of the above problems, and can be used by replacing a lens having a different magnification by holding a lens holder in which a lens is attached to a lens holding portion in a detachable manner directly or via an adapter. The purpose is to provide a magnifying glass holder.

The present invention has been made to achieve the above object, and the gist thereof is as follows.
The magnifying glass holder of the present invention comprises a gripping part and a lens holding part provided at the tip thereof, and holds the lens mounted on the lens holder detachably on the lens holding part directly or via an adapter. Thus, it is possible to use a lens having a different magnification.

  Further, the present invention is characterized in that in the magnifying glass holder, the lens holding part and the adapter have a fitting part, and the lens holder or the adapter is fitted to the fitting part and held by a support means. As the support means, any one of an O-ring, a frictional resistance force, a tapered portion, a screw, adhesion, or an interlocking connection is used.

  Furthermore, the present invention is characterized in that illumination is provided along the lens holding part in the lens holding part.

  In the magnifying glass holder of the present invention, the lens holder on which the lens is mounted is detachably held directly or via an adapter so that the lens can be easily replaced. Since the holder can be replaced, the size of the holder can be reduced, and the lens can be held by both the lens holding part and the adapter, so that it is possible to use a large number of lenses with different lens diameters and magnifications with a single magnifier holder. can get.

  Furthermore, by providing illumination along the lens holding part inside the lens holding part, it is possible to illuminate through the transparent cover of the lens holder, so that uniform illumination can be performed with a compact lighting device.

An embodiment of a magnifying glass holder of the present invention will be specifically described based on the drawings.
1 to 3 show an embodiment of the magnifying glass holder of the present invention. In this example, the main body 1 of the magnifying glass holder includes a grip portion 2 formed from a material such as a synthetic resin and a circular lens holding portion 3 formed at the tip of the grip portion 2. FIG. 1 is a perspective view in the case where a synthetic resin ring-shaped adapter 4 is fitted to the lens holding portion 3, and the lens is held in the opening portion of the adapter 4 in a state of being attached to the lens holder. . FIG. 2 is a cross-sectional explanatory view of the magnifying glass holder when the adapter 4 is removed from the lens holding portion 3, and FIG. 3 is a bottom view thereof. As shown in FIG. 2, the lens holding portion 3 includes a circular flange 6 formed together with the main body 1, and a fitting portion 14 is formed along the inner peripheral portion of the circular flange 6. The fitting portion 14 is a portion that holds the lens holder 17 to which the lens 11 is attached as indicated by a chain line, or holds the adapter 4 as described above. A space for inserting the illumination device is formed inside the lens holding unit 3, and for example, a cold cathode discharge tube 13 formed in a loop shape in the space is provided along the lens holding unit 3. .

  The cold cathode discharge tube 13 is preferably provided inside the lens holding portion 3 so as not to be damaged even if dropped as shown in FIG. Specifically, as shown in Patent Document 1, a plurality of ring-shaped buffer members 22 made of a synthetic resin having colorless and transparent and appropriate elasticity are provided in the cold cathode discharge tube 13 as shown in FIG. 7), and is interposed between the receiving ring 21 and the fixing ring 12 with the buffer member 22 interposed therebetween. In this case, the holding surface of the receiving ring 21 and the fixing ring 12 is preferably formed to be concavely curved along the outer shape of the buffer member 22 so that the cold cathode discharge tube 13 can be stably held. Although not shown, the safety can be further enhanced by covering the entire cold cathode discharge tube 13 with a tubular buffer member. In addition, the buffer member is normally separately molded as described above, but may be formed by applying synthetic resin or the like.

  Further, in order to reduce the loss of light irradiated from the cold cathode discharge tube 13, the receiving ring 21 at the back of the cold cathode discharge tube 13 is made of a material that does not transmit light, and the fixing ring 12 on the opposite side is made of light. It is preferable to form with the material which permeate | transmits. Further, by arranging a member 24 that scatters light, such as an aluminum foil or a reflection sheet, on the holding surface of the receiving ring 21, the light efficiency of the cold cathode discharge tube 13 is enhanced to irradiate brighter and more uniformly. be able to.

  With the above configuration, the impact resistance of the cold cathode discharge tube can be enhanced while reducing the loss of light irradiated from the cold cathode discharge tube 13, so that the cold cathode discharge tube 13 can be prevented from being damaged even when dropped. Highly safe magnifying glass holder can be obtained. The cold cathode discharge tube 13 has a long life and is excellent as a light source for the magnifying glass holder of the present invention.

  On the other hand, as shown in FIG. 2 and FIG. 3, a discharge circuit 16 for lighting the cold cathode discharge tube 13 and a power source 23 such as a dry battery are built in the grip portion 2. 13 can be appropriately turned on or off. A power source 23 such as a built-in dry battery is used as a power source when being carried and used for a short time, but a terminal provided at the rear end of the grip portion 2 when used for a long time For example, household electricity is introduced from 18 and used.

  In the present invention, the lens is made of glass or plastic, and the lens is held by the magnifying glass holder while being attached to the lens holder. FIG. 7 illustrates a lens holder of a lens having a small lens diameter. In this example, a lens with a very high magnification (for example, 15 to 30 times) can be cited as such a lens having a small lens diameter. An ultra-high magnification lens with a short focal length is suitable for a small magnifying lens.

  As shown in FIG. 7, the lens holder 17 includes a skirt-like transparent cover 20 that extends toward the lower end and opens at the lower end, and a cylindrical portion 25, and the lens 11 is attached to the cylindrical portion 25. Yes. Further, the cylindrical portion 25 is provided with a holding portion 9. By holding the holding portion 9, the lens holder 17 can be held by the lens holding portion of the magnifying glass holder via an adapter. . When the lens includes the transparent cover 20 as in the lens holder of this example, and the lens is mounted above the transparent cover 20, the lens can be held separately from the paper surface and the paper surface through the transparent cover 20. Etc. can be illuminated, which is preferable. Note that an uneven pattern 19 may be formed on the surface of the holding portion 9 in order to more reliably hold the lens holder 17.

  FIG. 8 illustrates a lens holder of a lens having a large lens diameter. In this example, as the lens 11 having such a large lens diameter, a lens having a high magnification (for example, 5 to 14 times) smaller than that of the ultra-high magnification lens can be exemplified. The lens holder 17 increases in size as the lens diameter increases, but the basic configuration in which the lens 11 is mounted on the lens holder 17 having the transparent cover 20 and the holding portion 9 is provided is the same as the lens holder 17 in FIG. In the lens holder 17 of this example, the size of the holding portion 9 is formed in accordance with the size of the fitting portion 14 (see FIG. 2) of the lens holding portion 3, and the holding portion 9 is formed by the fitting portion 14 of the lens holding portion 3. By fitting, it can be directly held by the lens holding part 3 of the magnifying glass holder. The holding portion 9 has a tapered portion having a small diameter upward so that the fitting portion 14 of the lens holding portion 3 can be easily fitted into the holding portion 9. Further, the shape of the transparent cover 20 is generally cylindrical with the upper end being restricted by the dimensions of the holding portion 9, but a sufficiently wide field of view can be secured by the space in the cylindrical transparent cover. By providing the notch 26 at the lower end portion of the transparent cover 20, it is possible to write a character or the like by inserting a pen or the like from the notch 26 and to reduce the weight.

  In the present invention, even when the lens diameter is different as described above, when the lens holder is directly held by the fitting portion of the lens holding portion of the magnifying glass holder, the holding portion of the lens holder is measured with the size of the fitting portion. In addition, when the lens holder is held via an adapter, the holding portion of the lens holder can be changed and held with a single magnifier holder by matching the size of the fitting portion of the adapter.

  The two typical lens holders of the present invention have been described above. However, the shape and dimensions of the transparent cover 20, the form of the holding portion, and the like are not limited thereto and can be changed as appropriate.

  Next, the adapter will be described with reference to FIGS. FIG. 5A is a perspective view of an adapter according to a preferred embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along the line AA in FIG. The adapter 4 of this example has a donut-like body made of, for example, acrylic resin, and a holding portion 9 that is fitted to the fitting portion of the lens holding portion is formed on the outer peripheral portion thereof. The holding portion 9 is formed in a tapered portion having a smaller diameter as going downward, and is easily fitted and held on the fitting portion of the lens holding portion from above. Further, for example, a rubber O-ring 8 is fitted in the recessed groove formed in the inner peripheral portion of the adapter 4. The inserted O-ring is pressed by the fixing plate 7 from the outside. The O-ring 8 slightly protrudes from the inner peripheral surface, and when an outward force is applied from the inside of the adapter 4, it is elastically deformed outward.

  In this example, as described above, the holding portion 9 is formed in a tapered portion that becomes smaller in diameter as it goes downward, but the holding portion 9 is formed in a tapered portion that becomes smaller in diameter as it goes upward. You may make it fit from the bottom to the fitting part of a holding | maintenance part.

  In the present invention, the adapter has a function of compensating for the size of the holding portion of the lens holder when the holding portion holds the small-diameter lens holder with the lens holding portion of the magnifying glass holder. Therefore, the outer peripheral portion of the adapter 4 includes a holding portion 9 that fits into the fitting portion 14 (see FIG. 2) of the lens holding portion of the magnifying glass holder, and the outer diameter of the holding portion is the same as that of the lens holding portion. The inner diameter of the fitting portion 14 is substantially the same.

  On the other hand, the inner peripheral portion of the adapter 4 has a fitting portion for holding a lens holder held by the lens holding portion via the adapter, and the inner diameter thereof is a lens held by the fitting portion. It is approximately the same size as the outer diameter of the holder holding portion. The thickness of the adapter 4 is substantially the same as the height of the fitting portion 14 of the lens holding portion.

  In the present invention, the lens holding portion and the fitting portion of each inner peripheral portion of the adapter hold the lens holder or the holding portion of the adapter, and after holding, the lens holder or the adapter is not easily detached from the fitting portion. It is preferable that it has the function hold | maintained. It is not preferable that the held lens holder or adapter easily fall off from the fitting portion because there is a risk of dropping during use.

  Therefore, in a preferred embodiment of the present invention, the lens holding part and the adapter hold the lens holder or adapter fitted to the fitting part by a supporting means to prevent the lens from falling off. Examples of the support means include an O-ring, a frictional resistance, a tapered portion, a screw, adhesion, or meshing connection. These can achieve the intended purpose alone, but two or more may be used in combination.

  FIG. 5 shows an adapter when the support means is an O-ring. A method of actually holding the lens holder 17 of FIG. 7 on the lens holding portion of the magnifier holder using this adapter will be described with reference to FIG. First, when the adapter 4 in which the O-ring 8 is fitted in the inner peripheral portion is put on the cylindrical portion 25 of the lens holder 17 from above and fitted in the fitting portion of the adapter 4, the O-ring protruding from the inner peripheral surface 8 contacts the holding portion 9 of the lens holder 11. When the adapter 4 is further pushed down after the contact, the O-ring is elastically deformed so that the adapter 4 is fitted to the holding portion 9 of the lens holder 17. The chain line in FIG. 9 shows this state. The lens holder 17 in this state is firmly held so that the holding portion 9 does not fall off even when the holding portion 9 is lifted by the adapter 4 by the action of the O-ring.

  Next, when the adapter 4 holding the lens holder 17 is fitted into the fitting portion of the lens holding portion 3 and pushed down, the holding portion 9 of the adapter 4 is formed with a tapered portion. The fitting portion 14 of the lens holding portion 14 is lowered along the taper portion until the adapter 4 is stopped by the fitting portion 14. When further pressing force is applied in this state, the fitting portion 14 of the lens holding portion 3 and the adapter 4 are held. The lens holder 17 can be held by the lens holding portion 3 by a large frictional resistance generated at the contact portion with the portion 9. Therefore, the support means in the fitting part of the lens holding part 3 in this case is a frictional resistance.

  Note that both the removal of the adapter 4 from the lens holding portion 3 and the removal of the lens holder 17 from the adapter 4 can be easily performed by applying a reverse force. In particular, removal of the lens holder 17 from the adapter 4 can be carried out smoothly because it can be performed by elastic deformation of the O-ring 8. The O-ring has a simple structure and is excellent as a support means.

  6A and 6B show an adapter according to another embodiment, in which FIG. 6A is a perspective view of the adapter, and FIG. 6B is a cross-sectional view of B = B portion of FIG. The adapter 4 in this example is different from the adapter in FIG. 5 in that the support means in the latter inner peripheral portion is an O-ring, whereas the support means in the inner peripheral portion in this example is a tapered portion 10. Yes, the others are the same. The adapter 4 presses the holding portion of the lens holder at the acute angle portion at the lower end of the taper portion 10 to prevent the adapter 4 from falling off.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. For example, an O-ring is provided as a support means on the fitting portion of the lens holding portion, or a magnifying glass is always used. When used in a bright place, the illumination device may not be provided in the lens holding portion. A lens holder that does not have a transparent cover can also be used.

  Furthermore, it is possible to use a square lens instead of the circular lens. In this case, the lens holding portion, the lens holder, the adapter, and the like are also square according to the lens.

  The magnifying glass holder of the present invention can be used by a person with reduced vision or a presbyopic person to read or work.

The perspective view of the magnifier holder of preferable embodiment of this invention. Cross-sectional explanatory drawing of the magnifier holder of preferable embodiment of this invention. The bottom view of FIG. Partial enlarged sectional view of the lens holding portion of FIG. (A) The perspective view of the preferable adapter of this invention, (b) is AA section sectional drawing of (a). (A) Perspective view of another preferred adapter of the present invention, (b) is a cross-sectional view of the BB part of (a). The perspective view of a preferable lens holder. The perspective view of another preferable lens holder. Explanatory drawing of the method of hold | maintaining a lens holder with a lens holding part via an adapter.

Explanation of symbols

1: body, 2: gripping part, 3: lens holding part 4: adapter, 6: circular flange part 6, 8: O-ring,
9: holding part, 10: taper part 11: lens,
13: Cold cathode discharge tube 14: Fitting part 15: Switch
17: Lens holder,

Claims (7)

  It consists of a gripping part and a lens holding part provided at its tip, and by holding the lens mounted on the lens holder detachably on the lens holding part directly or via an adapter, lenses with different magnifications can be obtained. A magnifying glass holder that can be used interchangeably. The magnifying glass holder according to claim 1, wherein the lens holding portion and the adapter have a fitting portion, and the lens holder or the adapter is fitted to the fitting portion and is held by a supporting unit.   The magnifying glass holder according to claim 1 or 2, wherein the supporting means is any one of an O-ring, a frictional resistance, a tapered portion, a screw, an adhesive, or an interlocking connection.   The magnifying glass holder according to claim 3, wherein the support means is an O-ring, a frictional resistance, or a tapered portion.   The magnifying glass holder according to any one of claims 1 to 4, wherein the lens holder includes a transparent cover having an opening at the bottom, and the lens is mounted above the transparent cover.   The magnifying glass holder according to any one of claims 1 to 5, wherein illumination is provided inside the lens holding portion along the lens holding portion.   The magnifier holder according to claim 6, wherein the illumination is a cold cathode discharge tube.

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