Rainwater detection device using electric wires

A rainwater detection device for detecting rainwater, comprising:

• a panel having at least one specific surface;
• a pair of rainwater sensing wires disposed on the specific surface of the panel;
• and
• a rainwater sensor (i) physically connected with each end of the pair of the rainwater sensing wires without an electrical connection therewith if an electrical condition is not satisfied and (ii) physically and electrically connected with said each end of the pair of the rainwater sensing wires if the electrical condition is satisfied;
• wherein each of the pair of the rainwater sensing wires is disposed on the specific surface of the panel such that a first wire, which is one among the pair of the rainwater sensing wires, is separated from a second wire, which is the other among the pair of the rainwater sensing wires, by a specific interval, without physically contacting each other and wherein each end of the pair of the rainwater sensing wires is connected to each end of opposite polarity of an electrode included in or connected with the rainwater sensor;
• wherein the electrical condition is that a first state in which no current flows between the first wire and the second wire on the specific surface is changed to a second state in which current flows between the first wire and the second wire on the specific surface due to the rainwater;
• wherein insulation material is formed on the specific surface up to a specific height of the first wire and the second wire and wherein the specific height is lower than each height of the first wire and the second wire, in order to fix the first wire and the second wire in a state of being separated by the specific interval;
• and
• wherein at least part of upper portions, without insulation, of the first wire and the second wire forms an arc with a curvature such that (i) the rainwater fallen on at least part, among the upper portions, of a specific rainwater sensing wire, which is one among the first wire and the second wire, flows along a side of the specific rainwater sensing wire due to the arc and (ii) the rainwater comes into contact with the other one among the first wire and the second wire, and as a result, the current flows between the first wire and the second wire.