| 摘要 |
PURPOSE:To prevent a trouble of burnt damage or the like when a fuse is replaced with a substitute and left by a driver or the like, by holding a flasher switch means to an opening condition in case of flowing a short-circuit current. CONSTITUTION:If a turn indicator switch 3 is turned on, for instance, to the left side, a charge discharge capacitor C23 in a flicker circuit 16 is charged and discharged to conduct and cut off an electric current respectively in the first and second transistors Tr20, 21, and turn signal lamps 4, 5 and turn indicator lamp 6 are flickered through a flasher switch means consisting of a coil 12 and normally open contact 11. In this constitution, a resistor 13 detecting a level of an electric current flowing in said contact 11 as the current detecting means and a short detecting circuit 30, electrically conducted in case of flowing a current of at least a prescribed value in said resistor to hold the conduction condition, are provided. Then an output of said circuit 30 holds the contact 11 to an opening condition through the circuit 16. |
