JP2001075484A - Display tactile perception plate and escape guide plate for both of sight handicapped person and sighted person - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a nameplate with characters which enables a sighted person to recognize the contents of information visually and a sight handicapped person by tactile perception by subjecting a plate or cylindrical surface, spherical surface or curved surface to deep engraving of characters, maps, etc., by machining. SOLUTION: This display tactile perception plate is formed by subjecting the plate or cylindrical surface, spherical surface or curved surface consisting of metals, timber, plastics, ceramics, glass, nonmetals, etc., to deep engraving of the characters, maps, likenesses and other illustrations by machining such that the information may be transmitted visually to the sighted person and by tactile perception to the sight handicapped person. The means for obtaining the deep engraving is most adequately a method by machining and particularly when the hard metal is deeply threedimensionally engraved, an NC milling machine or machining center is adequately used. If the deeply engraved grooves are coated with a luminous paint, the escape guide plate for emergency in the event of power supply interruption may be obtained. The paint in the groove bottoms are not easily peeled in spite of the act of tactile perception.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a metal, wood, plastic, ceramics, non-ferrous metal plate or cylindrical surface, spherical surface, curved surface, a character, a pattern, a figure, a portrait, an illustration, and a map formed by machining into a concave or convex shape. Engraved on the nameplate,
Of the products used as nameplates, tags, information boards, display boards, notice boards, etc., it relates to display tactile boards that can be recognized by visually impaired persons and sighted persons in common, and products used as evacuation guidance boards in the event of an emergency power failure. Things.

[0002]

2. Description of the Related Art Heretofore, display boards for the visually impaired have been mainly manufactured using Braille.

[0003] In addition, there are some displays that are used in combination with a voice generation and recognition device.

On the other hand, in the development of the dual-purpose display tactile plate,
Deep etching, for example, a tactile plate for displaying characters and images, etc., which is combined with Braille, as seen in Japanese Patent Application Laid-Open No. 118990/1990, has been developed.

As tactile plates utilizing figures and illustrations, there are also hand engraving, casting methods, and engraving methods. There are also those processed on plastic or wood with an engraving machine.

[0006] Also, a mold or a three-dimensional three-dimensional object manufactured using high-quality CAD / CAM may be exhibited for the purpose of tactile action and effect.

There is a guide light as an evacuation guide plate at the time of an emergency power failure.

[0008]

This has the following disadvantages.

It is difficult for a sighted person to understand a display board using only Braille, so that mistakes such as posting of contents different from the actual ones or improper mounting positions are caused, and the erroneous display is left uncorrected for a long time. There were dangers such as being continued.
For example, a case in a dissertation by Tsutomu Wada sent to a specialized journal, "Visual impairment" published in August 1999.

[0010] When characters and images are used in combination with Braille, the size and thickness are restricted by the restrictions of the press machine and the die.

In the case of engraving by etching, it is large,
It is difficult to perform deep engraving.

The method of attaching a thin plate and the thick coating of paint have problems in durability, weather resistance and appearance.

A tactile plate made by a sculptor has an uneven finish among products, and is not suitable as a tactile plate for visually impaired persons.

Engraving machines which require manual manipulation have the same disadvantages as described above.

[0015] Engraving with a stamp engraving machine is limited to soft materials, and data is lost when an image is enlarged or reduced.
Corners and details may be missing, and many tactile plates are not suitable.

In photolithography, the groove processing is limited to a shallow one, the engraving is too fine, and the etched portion is rounded, so that it is not suitable for touch.

[0017] Art and commercial bulletin boards are unable to respond to detailed demands in terms of cost and production quantity.

At present, a system for data preparation is very expensive for three-dimensional molds and three-dimensional sculptures using high-quality CAD / CAM, and a long training period is required for mastering operations for forming data. In short, it is not suitable as a signboard that is frequently used in daily life for large-scale and long-term installation in public places where management and monitoring are not perfect.

The guide light as an evacuation guide plate at the time of an emergency power failure cannot play a role when the battery life is exhausted.

[0020]

[Means for Solving the Problems]

The inventor of the present invention looks at the reality that a display board made of only Braille for a visually impaired person is not understood by a sighted person, and sees the reality that it is not corrected even if an erroneous display is made. By using means of expression that can be understood by people with disabilities,
We thought that such shortcomings could be eliminated at once. In addition, as a method for dealing with individual production, fine demand, and cost, a means for rapidly creating machine data, Japanese Patent Application No. 11-1 / 1999.
03019, a method of creating tool movement command data for a machine tool equipped with a numerical control device was thought to solve the problem. As a result of repeated trial production, the present invention could be completed.

The dual-purpose display tactile plate for visually impaired persons and sighted persons according to the present invention has solved the above-mentioned problem and is as follows. Metal, wood, plastic, ceramics, glass, non-ferrous metals and other plates or cylindrical surfaces, spherical surfaces, curved surfaces, etc., are machine-engraved with letters, maps, caricatures, and other illustrations, and visually sighted by sighted people. It is designed to allow people with disabilities to transmit information by touch.

As a means for obtaining a deep engraving, a method by machining is most suitable. In particular, when a hard metal is engraved deeply and three-dimensionally, it is appropriate to use an NC milling machine and a machining center.

When carving a portrait as a tactile plate,
Because it is a matter of recognizing and resembling features, it is customary to model yourself or copy it from a photograph. According to the present invention, a method for extracting an outline and characteristics of a person from a photograph and producing a sculpture that captures the characteristics of the person can be manufactured even by an amateur without a particular attraction (Japanese Patent Application No. 11-1030).
19) was adopted.

[0025]

[Function] The contents of information can be grasped visually by a sighted person.

The visually impaired can grasp the contents of the information by touch.

[0027] Even an acquired visually impaired person who has not learned braille can understand the contents.

If the luminous paint is applied to the deep engraving groove, it becomes an evacuation guide plate in the event of a power failure, and the paint at the bottom of the groove is not easily peeled off even by tactile action. In addition, it is effective for a longer time than a battery-type guide light.

[0029]

Embodiments of the present invention will be described below.

FIG. 1 is a schematic diagram of a sample obtained by mechanically engraving a metal plate having a thickness of about 2 mm and a width of about 1 mm and a depth of about 1-1.5 mm. In this sample, since only the outline is engraved, the diameter of the tool used at the time of engraving is about 2 mm rather than 1 mm, and is preferably adopted according to the size of the character or illustration to be engraved. This is because, in the case of small letters, illustrations and figures, the engraved grooves interfere with each other and are not suitable for tactile perception.
This is not the case for sighted people because they see with imagination.

When only the contour is engraved by using a small tool diameter, the skin of the finger becomes thick and the tactile sensation is reduced in elderly people, so that it is difficult to understand. This can be solved by balancing the character size and the engraving groove.

Although the sample shown in FIG. 1 can be processed into an island shape while leaving the inside of the contour line, the cost becomes high in view of the performance of the current processing machine and the performance of CAD / CAM.

[0033]

The present invention can be used as a display board that does not distinguish between sighted and visually impaired persons, so that it is most suitable as a display board in a public place or a place where many people gather.

The sculpture can be at any depth,
It can be used as an evacuation guidance board in the event of a power outage or emergency disaster by applying useful processing such as night paints in the event of a disaster.

Since the metal display panel is resistant to fire, earthquake, and collapse of houses, it can be used as an emergency rescue display panel.

Since a check is always made by a sighted person, erroneous display is eliminated.

Since the display panel can be colored and used as a decoration, it does not give a feeling of strangeness to the surrounding atmosphere.

[Brief description of the drawings]

FIG. 1 is a front view of a nameplate including a character according to an embodiment of the present invention. A practical dimension for the plate thickness is several tens of millimeters rather than one millimeter. ▲
It is possible to engrave in a concave shape by following the line drawing of (a), to leave the inside of the line drawing area as a convex in an island shape, or to cut off as a concave.

FIG. 2 is a front view of a nameplate including characters and a portrait of the embodiment of the present invention. The sculpture of a face or a person can be cut into a concave shape only on the outside of the outer contour (a). Eyes, nose and hair are engraved as line drawings.

FIG. 3 is a front view of the display board with characters according to the embodiment of the present invention.
When using as a sign, it is easier to understand by taking in the sign logo and engraving.

FIG. 4 is a front view of a guide plate with a character and a map according to the embodiment of the present invention.

[Explanation of symbols]

▲ A ▼ Tool trajectory for engraving or a line that becomes the boundary when shaving is left uncut. ▲ B ▼ In the case of person sculpture, the outline is displayed as a bold line. ▲ U ▼ Represents a plate to be the material to be engraved.

Claims (5)

[Claims] 1. A nameplate for a visually impaired person and a sighted person, which is engraved by machining 2. A nameplate with characters for both visually impaired and sighted persons and a caricature carved by machining. 3. A guide plate engraved by machine processing for characters for visually impaired persons and sighted persons and illustrations. 4. A guide plate with characters for a visually impaired person and a sighted person and a map engraved by machining. 5. An evacuation guide plate according to any one of claims 1 to 4, which is used as an evacuation guide plate in the event of an emergency power failure.