JPH0746615Y2 - Battery operated light for bicycle - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a battery-powered light for bicycles, in particular a headlight and a taillight.

2. Description of the Related Art Conventionally, a battery-powered light for a bicycle of this type has been a power generation lamp or a dry battery light, that is, a switch that is continuously turned on and off.

Problems to be Solved by the Invention With such a conventional configuration, in the case of a power generation lamp, a large amount of energy is required to drive it. That is, when traveling at 15 km / h, when the power generation lamp is not used, it is possible to travel with an input of about 30 W, but when using the power generation lamp it requires an input of about 45 W, which requires about 50% more input. . Therefore, since it is a heavy burden on women and children in particular, it often runs at night without using a power-generating lamp, which is dangerous for traffic safety. In the case of a dry battery light, if the switch is turned on before running, the lamp will remain lit even when waiting for a signal at an intersection, for example, and it will remain lit when driving in a bright place such as a shopping street. It was exhausted quickly and was uneconomical. The present invention solves the above problems and automatically turns on and off the battery-powered light, which is easy to install and
An object of the present invention is to provide a battery-powered light for a bicycle, which improves the economical efficiency of the battery.

Means for Solving the Problems In order to solve this problem, the present invention provides a power supply battery, a monostable multivibrator, and
A battery-powered light body incorporating a delight switch, a reed switch, an amplifier circuit, and a light bulb is attached through its attachment portion, and a magnet is attached to a bicycle wheel, for example, an air valve of a tire through a magnet attachment portion. Is placed at a position facing the reed switch of the main body each time the bicycle tire rotates.

Operation According to this structure, since the light body can be attached to the support shaft by using the dynamo attachment metal fitting, no special attachment means is required, and the magnet is used as a wheel rim, a spoke, or a tire air valve. Since it is tightened and fixed, it can be mounted extremely reliably and easily, and the magnetic flux of the magnet acts on the reed switch according to the rotation of the wheel to apply pulses to the monostable multivibrator circuit,
Turn on the light bulb. Then, the light bulb is blinked corresponding to the rotation cycle of the magnet.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In the figure, 1 is a tire, 2 is a spoke, 3 is a bicycle support shaft (front stay), 4 is a dynamo mounting bracket integrally attached to the support shaft 3, and 5 is a tire air valve. 6 is a magnet attached to the tire air valve 5, and 7 is a battery-powered light body attached to the dynamo mounting bracket 4 shown in FIGS. 4A and 4B through the mounting hole 4a and the mounting portion 7a. . Further, as shown in FIGS. 3A and 3B, a battery power source, a monostable multivibrator, a delight switch, a reed switch 7b, an amplifier circuit, and a light bulb 7c are provided inside thereof. The magnet 6 is attached to the tire air valve 5 as shown in FIG. 1 by the magnet attaching portion 8 shown in FIGS. 2A and 2B, and rotates facing the reed switch 7b.

Next, the operation will be described. Magnet 6 by rotation of wheels
Magnetic flux crosses the reed switch 7b, the reed switch 7b closes the contact from the open state, and a pulse is applied to the monostable multivibrator circuit each time. In the monostable multivibrator circuit, each time the pulse is received, the output is generated for a fixed time, for example, 10 seconds. If more than one pulse comes in within 10 seconds, the output continues to be generated and no output occurs 10 seconds after the last pulse is input. The output is amplified by an amplifier circuit, and the battery power is used to power the bulb 7c.
Light up.

As described above, according to the present invention, since the battery-powered light body can be attached to the support shaft by using the dynamo mounting bracket,
Since no special mounting means is needed and the magnet can be clamped and fixed to the spokes and tire air valves by its mounting member, it can be mounted securely and easily across the reed switch of the battery type light body, It automatically blinks the battery-powered light to improve the economy of the battery.

[Brief description of drawings]

FIG. 1 is a view showing a state in which a magnet and a main body are attached to a bicycle support shaft according to an embodiment of the present invention, FIG. 2A is a front view of the magnet, FIG. 2B is a sectional view thereof, and FIG. 4B is a front view of the light body, FIG. 4B is a cross-sectional view thereof, FIG. 4A is a front view of the dynamo mounting bracket, and FIG. 1 ... Tire, 2 ... Spoke, 3 ... Bicycle support, 4
...... Dynamo mounting bracket, 4a mounting hole, 5 tire air valve, 6 magnet, 7 battery main body.

Claims (2)

[Scope of utility model registration request] 1. A magnet attached to a bicycle wheel,
It has a dynamo mounting bracket attached to a bicycle support shaft, and a battery-powered light body mounted in a mounting hole of the dynamo mounting bracket through a mounting portion, and a power supply battery and a monostable multivibrator are provided in the body. ， Delight switch ，
A battery-powered battery light for a bicycle, comprising a reed switch, an amplifier circuit, and a light bulb, and the reed switch is arranged at a position facing the magnet each time the wheel of the bicycle rotates. 2. A battery-powered bicycle light according to claim 1, wherein the magnet is attached to an air valve of a tire mounted on a bicycle wheel.