JPS5827899U - bicycle light fixture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of a bicycle lamp according to this invention, and FIG. 2 is a waveform diagram showing the operating state of each part of FIG. 1. G... Generator, L... Light bulb, Ql... FE
T. Q2. Q3...Transistor constituting the switching circuit, B...Battery, C1...Capacitor. Amendment November 16, 1980 The scope of claims for utility model registration is amended as follows. O Utility Model Registration Claims (1) In a bicycle light device that operates using an alternating current generator installed in the bicycle as a power source, a battery is provided as an auxiliary power source, and between the battery and the light emitting body of the light device, the above-mentioned A switching circuit that is activated to conduct when the output voltage of the generator falls below a set level is interposed in series, and a switching circuit that is driven to conduct when the output voltage of the generator falls below a set level is interposed between the light emitting body and the generator. A bicycle lamp characterized in that a capacitor having a capacitance exhibiting sufficiently low impedance is interposed in series. (2) The utility model according to claim 1, further comprising a timer circuit configured to forcibly turn off the switching circuit after a set time has elapsed after the generator has stopped. Bicycle light fixture. (3) Provide a capacitor connected so that the output voltage from the generator causes relatively rapid charging when the generator is in operation, while gradually discharging when the generator is stopped; A utility model characterized in that the stop F fixed time is a delay circuit that turns on the lamp, and the switching circuit is made non-conductive when the terminal voltage of the capacitor becomes less than a set value. A bicycle lamp according to claim 1 or 2 of the registered claims. (4) Practical use characterized in that the battery is a secondary battery, and a charging current is supplied to the battery when the output voltage of the generator exceeds the electromotive force of the battery. A bicycle light device according to claim 1, 2, or 3 of the invention registration claim. (5) A utility model registration claim characterized in that, when the switching circuit is in a conductive state, voltage feedback is applied from the output side of the switching circuit to the input side to maintain the voltage on the output side. A bicycle light device according to item 1, 2, 3, or 4 of the scope.

Claims (5)

[Scope of utility model registration request] (1) In a bicycle light device that operates using an alternating current generator installed on the bicycle as a power source, a battery is provided as an auxiliary power source, and the output voltage of the generator is set between the battery and the light emitting body of the light device. A switching circuit that is driven to conduct when the voltage drops below the level is interposed in series, and a circuit that exhibits sufficiently low impedance with respect to the alternating current output frequency of the generator is provided between the light emitting body and the generator. A bicycle lamp characterized in that a capacitor having a capacitance is interposed in series. (2) The utility model according to claim 1, further comprising a timer circuit configured to forcibly turn off the switching circuit after a set time has elapsed after the generator has stopped. Bicycle light fixture. (3) A capacitor is provided, which is connected so that the output voltage from the generator causes relatively rapid charging when the generator is in operation, while gradually discharging when the generator is stopped; The bicycle lamp according to claim 1 or 2, wherein the switching circuit is made non-conductive when the terminal voltage becomes equal to or less than a set value. (4) A utility model characterized in that the battery is a secondary battery, and a charging current is supplied to the battery when the output voltage of the generator exceeds the electromotive force of the battery. A bicycle stone lamp according to registered claims 1, 2, or 3. (5) A utility model registration claim characterized in that, when the switching circuit is in a conductive state, voltage feedback is applied from the output side of the switching circuit to the input side to maintain the voltage on the output side. A bicycle light device according to scope 1, 2, 3, or 4.