JP2000168651A - Bicycle head lamp flashing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue flashing in designated lighting time and with a lighting interval at the time when a bicycle stops by discharging stored electric power of a secondary battery at the time when output of a generator is lowered, maintaining its illuminance by complementing a lighting electric current of a head lamp and flashing the head lamp at a designated flashing ratio after power generation of the generator stops. SOLUTION: A generator 1 also stops generating power in the same way and output voltage of the generator becomes zero when a bicycle stops, but a control circuit 6 maintains an active state by continuing to receive supply of electric power from a charged secondary battery 7. The control circuit 6 detects generation stop by an inside circuit, outputs a charging stop command to a battery charger 5 and cuts an electric current 14, and it closes a switch 8 for a period of time designated by a lighting time regulator 9. At this time, electric power stored in the secondary battery 7 becomes an electric current 13 by passing the closed switch 8 and lights a head lamp 2. Thereafter, the control circuit 6 opens the switch 8 after the designated period of time by the lighting time regulator 9 passes. At this time, the head lamp 2 flashes as the electric current 13 is cut off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blinking device mounted on a headlight with a generator of a bicycle.

[0002]

2. Description of the Related Art Conventionally, a headlamp with a generator of a bicycle is turned on by the power generated by the generator when the bicycle is running. Therefore, the headlamp cannot be turned on after power generation is stopped. Did not. In addition, a headlamp with a generator, which has a secondary battery and a control circuit, and has a function of turning on the headlamp by discharging the secondary battery after the generator stops when the bicycle stops. The lighting time was not enough because the stored power was consumed quickly because of the continuous lighting, and there was no headlight illuminance maintenance function when the output of the generator during running decreased. For those with the function of blinking the headlight after the power generation of the machine has stopped, there is no function to control the blinking ratio, so the blinking time and interval according to the situation could not be set, and in addition, the control could not be performed Therefore, it was difficult to use the headlight for illumination after power generation was stopped, and there was no function of maintaining the illuminance of the headlight when the output of the generator was reduced during running.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and maintains the illuminance of a headlight when a running speed of a bicycle decreases and turns off the light when the bicycle stops. This enables the headlight to continue blinking for a specified lighting time and lighting interval for safety and lighting.

[0004]

The invention according to claim 1 is shown in FIG. In addition to the conventional generator (1) and headlight (2),
A flashing device main body (3) indicated by a dotted line according to the present invention is provided. Inside the flashing device main body (3), a rectifier (4), a charger (5), a control circuit (6), a secondary battery (7), Switch (8), lighting time adjuster (9), lighting interval adjuster (1
0), a reference voltage generator (11), and a voltage comparator (12). The reference voltage generator (11) and the voltage comparator (12) constitute a voltage detector.

[0005]

The operation of the blinking device according to the present invention will be described with reference to FIG. When the bicycle is running, the electric power generated by the generator (1) is rectified by the rectifier (4) and
In 3), the headlight (2) is turned on, but at the same time, the control circuit (6) is also activated by its power. The control circuit (6) opens the switch (8) and also charges the charger (5). The charger (5) receives the command and supplies a current (14) to charge the secondary battery (7).
The secondary battery (7) starts charging by this current,

When the speed of the running bicycle decreases, the voltage output of the generator (1) likewise decreases. A voltage comparator (12) compares that voltage with the voltage of a reference voltage generator (11). The amount of the lighting current (13) of the headlight (2) is determined based on the value indicated by the difference, and when it is not sufficient, the control circuit (6) is notified of a decrease in the voltage output of the generator (1). In response, the control circuit (6) instructs the charger (5) to stop charging, the current (14) is cut off, and the control circuit (6)
Closes the switch (8), the electric power stored in the secondary battery (7) passes through the closed switch (8) and the current (1)
3), and superimposes on the current from the generator (1) to maintain the illuminance of the headlight (2).

When the running bicycle stops, the generator (1) also stops generating power, and the output voltage of the generator becomes zero. However, the control circuit (6) controls the charged secondary battery (7). The control circuit (6) keeps receiving the power supply and maintains the active state.
, The current (14) is cut off, and then the switch (8) is closed for the time specified by the lighting time adjuster (9). At this time, the secondary battery (7)
The electric power stored in the headlight (2) turns on the headlight (2) through the closed switch (8) and turns on the headlight (2), and then the control circuit (6) performs the designation by the lighting time adjuster (9). After a lapse of time, the switch (8) is opened. At this time, since the current (13) is cut off, the headlight (2) is extinguished. Subsequently, the control circuit (6) operates the lighting interval adjuster (10). The switch (8) is closed again after the specified time without changing the state of the switch (8) for the time specified by the switch (8). The closing, opening, and operation are repeated until the power stored in the secondary battery (7) decreases and the control circuit (6) becomes inoperable.

That is, a rectifier (4), a charger (5), a control circuit (6), a secondary battery (7), a switch (8), a lighting time adjuster (9), By providing the lighting interval adjuster (10), the reference voltage generator (11), and the voltage comparator (12), the generator (1)
When the output of the headlamp (2) decreases, the illuminance of the headlamp (2) can be maintained, and the headlamp (2) can blink after the generator (1) stops generating power. It can be arbitrarily set by the adjuster. Of course, the lighting time adjuster (9) and the lighting interval adjuster (10) uniquely determine the lighting time and the lighting interval for realizing the blink ratio according to the application,
The regulator can be fixed. Naturally, the secondary battery (7) can be replaced with a capacitor having a charge storage ability.

[0009]

Embodiments will be described below with reference to embodiments. Figure (2)
An embodiment according to the present invention will be described below with reference to FIG. In FIG. 2, (1) is a generator, (2) is a headlight,
(3) The blinking device main body in the dotted line, (4) rectifier, (5)
Is a semiconductor switch for charging, which constitutes a charger together with (16) a charging current limiting resistor, (6) is a control circuit,
(7) is a secondary battery, (8) is a semiconductor switch for discharging,
(9) is a lighting time adjusting volume, (10) is a lighting interval adjusting volume, (11) is a reference voltage generating diode, (12) is a voltage comparator, (13) and (14) are currents, and (15). Is a backflow prevention diode.

When the bicycle starts running, the generator (1) starts supplying electric power, and the electric power is rectified by the rectifier (4) to become a current (13) to turn on the headlight (2).
At the same time, the control circuit (6) is also supplied with a voltage and becomes active. The activated control circuit (6) closes the charging semiconductor switch (5), thereby passing through the charging current limiting resistor (16). The current (14) flows to charge the secondary battery (7), the control circuit (6) simultaneously opens the discharging semiconductor switch (8),

When the voltage output of the generator (1) drops to a level at which the normal operation of the control circuit (6) cannot be maintained, the control circuit (6) starts charging the rechargeable secondary battery ( 7) The voltage comparator (12) compares the output voltage of the generator (1) with the voltage of the reference voltage generating diode (11), and shows the difference between the output voltage and the voltage of the reference voltage generating diode (11). When it is determined from the value that the amount of the lighting current (13) of the headlight (2) is not sufficient, the control circuit (6) is supplied with a voltage indicating a decrease in the voltage output of the generator (1). The control circuit (6) is a semiconductor switch (5) for charging.
Is opened to interrupt the current (14), stop charging, and close the discharging semiconductor switch (8), whereby the power stored in the secondary battery (7) is closed and the discharging semiconductor switch (8) is closed. And superimposes on the current (13) from the generator (1) to maintain the illuminance of the headlight (2).

When the bicycle stops and the generator (1) stops generating power, the control circuit (6) continues to receive power from the charged secondary battery (7) and maintains an active state. 6) The power generation stop is detected by the internal circuit, the charging semiconductor switch (5) is opened to stop charging, and the specified value of the lighting time is received by the value of the lighting time adjusting volume (9). The semiconductor switch (8) is closed, and the power stored in the secondary battery (7) at this time becomes a current (13) via the discharging semiconductor switch (8) to turn on the headlight (2). The circuit (6) opens the discharge semiconductor switch (8) after the lighting time specified by the value of the lighting time adjusting volume (9), and then sets the lighting interval according to the value of the lighting interval adjusting volume (10). Receives the specified value During this time, the headlamp (2) is extinguished, and the control circuit (6) is operated after the elapse of the extinguishing time according to the value of the lighting interval adjusting volume (10). Closing the discharge semiconductor switch (8), turning on the headlight (2) again, and maintaining the discharge semiconductor switch (8) closed for a time specified by the value of the lighting time adjusting volume (9); The control circuit (6) repeats the above-described closing, opening, and operation of the discharging semiconductor switch (8) until the voltage of the secondary battery (7) drops and the control circuit (6) becomes inoperable.

[0013]

The blinking device for a bicycle headlight according to the present invention prevents a decrease in the illuminance of the headlight caused by a decrease in the speed of a bicycle running at night, and also enables a bicycle running at night. The lighting time specified even after the stoppage,
Blinking can be continued at lighting intervals.For example, in situations where traffic accidents are likely to occur, such as waiting for a signal, flashing is performed at a high speed to increase visibility. The accumulated power consumption can be reduced to enable long-time blinking after stopping, and if necessary, the lighting time can be set long and the lighting interval can be short, so that the lighting can be used as a state close to continuous lighting.
This blinking device is effective for traffic safety of a bicycle running at night.

[Brief description of the drawings]

FIG. 1 shows a headlight flashing device for a bicycle according to claim 1.

FIG. 2 shows an embodiment of a headlight blinking device for a bicycle according to claim 1.

[Explanation of symbols]

FIG. 1 (1) Generator, (2) Headlight, (3) Headlight blinking device main body, (4) Rectifier, (5) Charger, (6) Control circuit, (7) Secondary battery (8) switch, (9) lighting time adjuster, (10) lighting interval adjuster, (11) reference voltage generator, (12) voltage comparator, (13) (14) current,

FIG. 2 shows (1) a generator, (2) a headlamp, (3) a headlamp blinker main body, (4) a rectifier, (5) a semiconductor switch for charging, (6) a control circuit, and (7) two. Secondary battery, (8) semiconductor switch for discharge, (9) lighting time adjustment volume, (1
0) lighting interval adjustment volume, (11) reference voltage generating diode, (12) voltage comparator, (13) (14) current, (15) backflow prevention diode, (16) charging current limiting resistor,

Claims (1)

[Claims] An apparatus provided in a headlight with a generator of a bicycle, comprising a secondary battery, a charger, a switch, a lighting time adjuster, a lighting interval adjuster, a voltage detector, and a control circuit,
When the output of the generator decreases, the stored power of the secondary battery is discharged, thereby maintaining the illuminance by supplementing the lighting current of the headlight, and the headlight at the specified blinking ratio after the power generation of the generator is stopped. Flashing device for bicycle headlights.