Patent ID: 8680768

Claim:
A light emitting diode lighting circuit of a saddle-ride type vehicle, said light emitting diode lighting circuit comprising: a control means configured to turn on a lamp comprised of a light emitting diode mounted on a vehicle; a manipulation switch which is turned on or off in response to a manipulation by a rider; a power source for supplying a power source voltage; and an ignition switch, wherein the control means comprises: a drive means, which performs lighting driving of the lamp, wherein the control means further comprises: an intermittent power source switch means connected to the power source via the ignition switch, the intermittent power source switch means being cyclically turned on or off by a control part in response to turning on the ignition switch so as to intermittently supply the power source voltage to one side of the manipulation switch; an input port coupled to another side of the manipulation switch, wherein the input port receives the intermittently supplied power source voltage from the intermittent power source switch means in response to turning on the manipulation switch; an input circuit part which determines a state of the manipulation switch based on an input voltage to the input port; and an erroneous lighting prevention resistance which has one end thereof connected between the input port and the input circuit part and has the other end thereof grounded so as to generate a voltage smaller than the power source voltage on both ends thereof in a leak state of the manipulation switch; wherein the control part controls lighting of the lamp based on a result of the determination by the input circuit part; the drive means performs lighting driving of the lamp in response to a drive signal from the control part; and the input circuit part compares a magnitude of the input voltage at the input port with a predetermined voltage value, such that: when the magnitude of the input voltage is larger than the predetermined voltage value, the input circuit part determines that the manipulation switch is in an ON state and outputs the input voltage to the control part as a lighting permission signal; and when the magnitude of the input voltage is smaller than the predetermined voltage value, the input circuit part determines that the manipulation switch is in an OFF state or a leak state and inhibits outputting of a lighting permission signal to the control part.