TACTILE SIGNALLING DEVICE, ESPECIALLY FOR PROVIDING PICTURE AND GRAPHICAL INFORMATION FOR THE VISUALLY IMPAIRED

摘要

The invention relates to a tactile signalling device, especially for providing picture and graphical information for the visually impaired, which contains a carrying body (10), movable signalling elements (20) arranged on the carrying body (10), and the signalling elements (20) are connected to a drive unit (30) for moving the signalling elements (20). The characteristic feature of the invention is that medium channels (12) are arranged in the carrying body (10), and the access-opening (12a) of at least some of the medium channels (12) comes out onto the surface (11) of the carrying body (10) in the environment of the signalling elements (20), the drive unit (30) has a source unit (31) for moving gas and/or liquid driving medium (40) in the medium channels (12), where the regulator opening (31a) of the source unit (31) is connected to at least some of the medium channels (12) directly or indirectly via a transfer-passage (13) in a way allowing flow, and at least some of the signalling elements (20) are formed by membrane members (22) made of a flexible material, at least some of the membrane members (22) are attached to the surface (11) of the carrying body (10) with gastight sealing, while movement regulator bodies (50) are inserted between the membrane members (22) and the carrying body (10), where the individual movement regulator bodies (50) have a first conducting layer (22b) situated on the internal side (22a) of the membrane members (22) facing the carrying body (10) and/or in its environment, and a second conducting layer (14) placed on the surface (11) of the carrying body (10) facing the membrane members (22) and/or in its environment, and on a part of the free surface (22c) of the first conducting layer (22b) and/or on a part of the free surface (14a) of the second conducting layer (14) there is an insulating coating (60), and the first conducting layer (22b) and/or the second conducting layer (14) is connected to an electric energy source (70), and the electric energy source (70), the drive unit (30) and the movement regulator bodies (50) are connected to the control unit (80).