Display module for visually impaired persons
The present invention relates to a display module for visually impaired persons. More specifically, the present invention provides a display module for visually impaired persons which provides information such as braille, figures and images by using a plurality of protrusions which vertically moves so that a visually impaired person may obtain information through hand sensation.
1. A display module for visually impaired persons, the display module comprising:
a display unit in which a plurality of through holes is arranged in a predetermined array;
a braille block provided below each through hole and vertically moving whereby an upper protrusion thereof protrudes above the protrusion through hole when the braille block moves upwardly;
a lateral latch provided below the display unit in a lateral direction, and restricting movement of the braille block in each of laterally arranged protrusion through holes of the display unit and releasing the restriction;
a longitudinal latch provided below the display unit in a longitudinal direction, and restricting movement of the braille block in each of longitudinally arranged protrusion through holes of the display unit and releasing the restriction;
an upper base in which the display unit, the braille block, the lateral latch, and the longitudinal latch are installed;
a lower block provided below each braille block, vertically moving, and pushing the braille block upwardly when the lower block moves upwardly;
an elastic unit provided below each lower block and providing force to upwardly push the lower block;
a lower base in which the lower block and the elastic unit are installed; and
a lower adjustment unit for vertically moving the lower base.
2. The display module of claim 1 , wherein the braille block includes:
an upper movement shaft portion formed by extending from a lower part of the upper protrusion and having a pillar shape;
an engagement portion formed on the upper movement shaft portion by being protruded or depressed in a horizontal direction; and
an upper movement stop portion formed on the upper movement shaft portion or formed by extending from a lower part of the upper movement shaft portion, and having a pillar shape with a cross-sectional area greater than a cross-sectional area of the protrusion through hole.
3. The display module of claim 2 , wherein the lateral latch is coupled so as to move in a horizontal direction based on the upper movement shaft portion, and formed with a lateral latch slot through which the upper movement shaft portion vertically moves in the lateral latch.
4. The display module of claim 2 , wherein the longitudinal latch is coupled so as to move in a horizontal direction based on the upper movement shaft portion, and formed with a longitudinal latch slot through which the upper movement shaft portion vertically moves in the longitudinal latch.
5. The display module of claim 1 , wherein the lower block includes:
a lower movement shaft portion formed in a pillar shape at an upper part thereof; and
a lower movement stop portion formed on the lower movement shaft portion or formed by extending from a lower part of the lower movement shaft portion, and having a pillar shape with a cross-sectional area greater than a cross-sectional area of the lower movement shaft portion.
6. The display module of claim 5 , wherein the lower block further includes an elastic unit upper fixing portion formed by being protruded or recessed in a vertical direction at a lower part thereof.
7. The display module of claim 5 , wherein the upper base is formed with an upper base hole through which the lower movement shaft portion of the lower block passes.
8. The display module of claim 5 , wherein the lower base is formed with:
a lower block movement path formed to receive the lower block and the elastic unit therein, and having a pillar shape to allow the lower block to vertically move therethrough; and
a lower base hole formed above the lower block movement path to communicate with an outside and to allow the lower movement shaft portion to vertically move therethrough,
wherein a section where the lower block movement path is formed is configured to be partially divided.
9. The display module of claim 8 , wherein the lower base further includes an elastic unit lower fixing portion formed by being protruded or recessed in the vertical direction at a lower part thereof.
10. The display module of claim 1 , wherein the lower adjustment unit is provided with a protrusion portion formed by partially protruding therefrom, wherein the protrusion portion upwardly pushes the lower base while sliding on a module base provided below the lower adjustment unit.