JPH0519680A - Display device for blind person - Google Patents

Abstract

PURPOSE:To express an optional braille by putting plural projection part expression rods 3 in operation selectively for projection part expression and plane expression. CONSTITUTION:This display device for the blind is equipped with a box-shaped main body 1 which has a display surface 1a where holes 2 are arrayed in a lattice shape so as to represent braille, movable iron pieces 4 arranged in the main body 1 so that the projection expression rods 3 which are made of insulators having rounded tips are coupled concentrically with one-end sides and can be inserted concentrically into the holes 2 respectively, and coils 5 and 6 which are arranged concentrically nearby both ends of the movable iron pieces 4 respectively and fed with electricity to serve as electromagnets. Then the coil 5 is fed with the electricity and the tip of the projection part expression rod 3 projects slightly from the hole 2 of the main body 1 to represents a projection part; when the coil 5 is powered OFF and the coil 6 is powered ON, the tip of the projection expression rod 3 is retracted to the same level with the display surface 1a to represent a plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for the blind who represents information in Braille.

[0002]

2. Description of the Related Art There has been no display device capable of switching and expressing arbitrary Braille characters.

[0003]

DISCLOSURE OF THE INVENTION According to the present invention, projection and non-projection of a convex portion, which is an element for expressing Braille, from a display surface are electrically switched, and a plurality of convex portions are arranged to arbitrarily set Braille. It is an object of the present invention to realize a display device for the blind, which expresses.

[0004]

SUMMARY OF THE INVENTION A display device for a blind person according to the present invention is a box-shaped main body having a display surface in which holes are arranged in a grid pattern for expressing Braille, and a plastic having a rounded tip. A movable iron piece arranged in the main body such that a convexity expression rod made of an insulating material is concentrically coupled to one end and the convexity expression rod is concentrically and insertably inserted in each hole.
This movable iron piece is provided with a coil which is concentrically arranged near both ends of the movable iron piece and which becomes an electromagnet when energized.

[0005]

In the display device for the blind of the present invention,
By energizing the coil located on the connecting end side of the convex expression rod of the movable iron piece, the tip of the convex expression rod slightly protrudes from the hole of the main body to express the convex portion, and this convex portion is flush with the display surface. To express the plane by retracting the coil, the coil is de-energized and the coil arranged on the rear end side of the movable iron piece is energized.
By selecting and executing the above-described operations of the convex portion representation and the plane representation for a plurality of convex portion representation bars, arbitrary Braille can be represented.

[0006]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 shows a display device for the blind according to an embodiment of the present invention. The main body 1 of the device is a rectangular parallelepiped box, and has a display surface 1a in which holes 2 are arranged in a lattice shape for expressing Braille. A movable iron piece 4 having a rounded tip and made of an insulating material such as plastic and concentrically coupled to one end of the movable iron piece 4 allows the convex expression rod 3 to be inserted concentrically in each of the holes 2. Are arranged in the main body 1. Further, coils 5 and 6 which become electromagnets when energized are concentrically arranged at positions near both ends of the movable iron piece 4, respectively.

In the display device for the blind according to the embodiment of the present invention constructed as described above, when the coil 5 arranged on the coupling end side of the convex representation rod 3 of the movable iron piece 4 is energized,
The movable iron piece 4 is attracted to the coil 5, and the tip of the convex portion expressing rod 3 coupled to the movable iron piece 4 slightly protrudes from the hole 2 of the main body 1 to express the convex portion. (At this time, the coil 6 is not energized.) To express the plane by retracting the convex portion to the display surface 1a, the coil 5 is de-energized and placed on the rear end side of the movable iron piece 4. If the coil 6 is energized,
The movable iron piece 4 is attracted to the coil 6, and the tip of the convex portion expression rod 3 coupled to the movable iron piece 4 retracts to be flush with the display surface 1a.

As described above, arbitrary braille can be expressed by selectively executing the operations of the convex portion representation and the plane representation for the plurality of convex portion representation rods 3 arranged in a grid pattern.

[0010]

As described above in detail, according to the present invention, a box-shaped main body having a display surface in which holes are arranged in a lattice pattern for expressing Braille, and an insulating material having a rounded tip. And a movable iron piece arranged inside the main body so that the convex expression rod is concentrically joined to one end and the convex expression rod can be inserted concentrically in each of the holes, and positions near both ends of the movable iron piece. By realizing a display device for the blind who is provided with a coil that is concentrically arranged in each of the two and that becomes an electromagnet when energized, it is possible to express the convex part by energizing the coil arranged on the rod coupling end side of the movable iron piece. The tip of the rod slightly protrudes from the hole of the main body to express a convex portion, and the coil is turned off to energize the coil arranged at the rear end side of the movable iron piece, so that the tip of the convex portion expresses the display surface. It can retreat to the same level and express a plane. By selectively executing the operations of the convex expression and the plane expression with respect to a plurality of convex expression sticks, arbitrary Braille can be expressed, which largely contributes to the improvement of social welfare.

[Brief description of drawings]

FIG. 1 is a perspective view showing a display device for a blind person according to an embodiment of the present invention with a part cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body 1a ... Display surface 2 ... Hole 3 ... Convex expression rod 4 ... Movable iron piece 5 ... Coil 6 ... Coil

Claims (1)

Claims: 1. A box-shaped main body having a display surface in which holes are arranged in a lattice pattern for expressing Braille, and a convex expression made of an insulating material having a rounded tip. A movable iron piece arranged in the main body such that a rod is concentrically coupled to one end and the convex portion expressing rod can be inserted concentrically in each of the holes, and concentrically arranged at positions near both ends of the movable iron piece. A display device for the blind, which comprises a coil that becomes an electromagnet when energized.