LIGHT-EMITTING CHANGEABLE SIGN BOARD DEVICE USING OPTICAL FIBER

摘要

An objective of the present invention is to provide a light-emitting changeable sign board using optical fiber which can change and display limit information according to a weather situation to, for example, display a normal number corresponding to a normal speed in clear weather and display a deceleration number corresponding to a deceleration speed in rain or fog. The light-emitting changeable sign board using optical fiber comprises: a panel member of a plate shape forming information to be expressed by a plurality of through holes; an optical fiber holder member inserted and installed in the through holes of the panel member, into which a front end of optical fiber is inserted and fixed; a sign board unit binding a rear end of the optical fiber inserted and fixed in the optical fiber holder member thereto, and comprising a light source to provide light transferred through the bound optical fiber; a power supply unit to supply power to the light source of the sign board unit; and a control unit to control the power of the power supply unit to be transferred to the light source. The control unit detects surrounding humidity to change and display a number of a speed limit displayed on the panel member according to a detected value of the humidity.