3 patents
Utility
Light-emitting sign device and low-power predictive diagnosis bidirectional adaptive control system comprising same
15 Feb 22
A light-emitting sign device according to the present invention comprises: a solar cell; a battery module comprising at least one battery in which power generated by the solar cell is stored; a light-emitting module for emitting light by the power supplied from the battery; a front panel optically coupled to the light-emitting module; and a controller for applying, to the light-emitting module, a target mode determined, from among driving modes, on the basis of an average value of solar cell voltages measured for a certain period with respect to the solar cell and a voltage value of a battery voltage measured at a certain time with respect to the battery module.
Ki Hoon Lee, Sung Su Jo
Filed: 19 Apr 19
Utility
Light emitting sign apparatus using optical fiber including solar-responsive light sensors
9 Nov 20
A light emitting sign apparatus including an optical fiber includes an outer frame.
Ki Hoon Lee, Sung Su Jo
Filed: 1 May 19
Utility
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6 Jan 20
A light emitting sign apparatus using an optical fiber includes: a front panel including a plurality of emission holes; a plurality of optical fibers having one ends respectively connected to the plurality of emission holes and the other ends constituting a concentrated bundle; and a light source assembly including a plurality of light emitting diodes optically coupled to the other ends of the plurality of optical fibers, wherein the plurality of light emitting diodes are located on a plane.
Ki Hoon Lee, Sung Su Jo
Filed: 25 Jun 18
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