JPH05170154A - Automatic light lighting system for bicycle - Google Patents

Abstract

PURPOSE:To provide the automatic light lighting system of a bicycle blinking light emitting diodes provided at desired positions of the bicycle during parking. CONSTITUTION:A hub power generator D provided on the axle section of a bicycle, a headlight 9, light emitting diodes 20 provided at desired positions of the bicycle, a sensor 24 detecting brightness, a circuit controlling the lighting with the sensor 24, and a capacitor 26 are provided, the headlight 9 is lighted by the hub power generator D during a travel requiring lighting, and the light emitting diodes 20 are blinked for a fixed time by a capacitor 26 after the bicycle is stopped in the travel requiring lighting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle lighting device having a hub generator provided on an axle.

[0002] Conventional automatic lighting devices for bicycles include, for example, Japanese Utility Model Laid-Open No. 1-87979 and Japanese Patent Laid-Open No. 2-70585, both of which use a dry battery as a power source to detect running and stopping of the bicycle. As a sensor, a seismograph, a reed switch and a magnet were used.

[0003]

Since the above-mentioned conventional device is mainly intended for lighting during night driving,
For example, when waiting for a traffic signal at night for about one minute, the sensor that detects the stop will not work and the bicycle itself will not emit light. There was a problem.

[0004]

In order to solve the above-mentioned problems, in the present invention, a hub generator provided on an axle portion of a bicycle, a headlight and a light emitting diode provided at a desired portion of the bicycle, A sensor that detects brightness, a circuit that controls lighting by this sensor, and a capacitor are provided, and the headlights are turned on by the hub generator when the vehicle is required to be turned on, and after the stop when the vehicle is required to be turned on,
An automatic lighting device for a bicycle is configured such that the condenser causes the light emitting diode to blink for a certain period of time.

[0005]

As described above, in the present invention, a hub generator having a light driving force is used as a power source, and the headlight is automatically turned on by an optical sensor for detecting the brightness of the surroundings. Since the light emitting diode is made to blink for a certain period of time after the vehicle is stopped when the vehicle needs to be lit, it is possible to notify other passersby, drivers of automobiles, etc. of the existence of the bicycle even when the vehicle is stopped, and improve the visibility.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, 1 (see FIG. 2) is a front wheel of a bicycle, 2 is a rear wheel, 3
Is a bicycle frame body, 4 is a front hawk, 5 is a handle post, 6 is a handle bar, 6 is a handle bar, 7 is a handle grip, 8 is a front basket, 9 is a headlight, 10 is its lamp case, Reference numeral 11 (see FIG. 4) is a light bulb, 12 is a saddle, and 13 is a mudguard for rear wheels.

FIG. 5 shows an example of a hub generator (Japanese Patent Application No. 3-232433) used as a power source in the present invention, which is a hub body of wheels with respect to an axle 14 fixed to a bicycle frame. 15 is rotatably fitted, and a hollow cylindrical fixed cylinder 16 is provided inside the hub body 15 so as to be fixed to the axle 14, and a power generating coil body 17 is fixedly provided inside the fixed cylinder 16. At the same time, a rotor 19 integrally formed with the magnet 18 is rotatably provided on the axle 14, and has a planetary transmission A for increasing the rotation of the hub body 15 and transmitting the speed to the rotor 19. It is a device.

In the present invention, the axle of the front wheel 1 of the bicycle
A hub generator D is provided at 14, a headlight 9 that uses the hub generator D as a power source is provided, and a light emitting diode 20 is provided at a desired portion of the bicycle.

That is, as shown in FIG. 4, a light emitting diode 20 is provided on the side of the light bulb 11 of the headlight 9. Reference numeral 21 is a substrate of an electric circuit for the light emitting diode installed in the lamp case 10.

Further, as shown in FIG. 3, the light emitting diodes 20 may be provided on the left and right front surfaces of the handlebar 6, and the light emitting diodes 20 may be provided on the outer end portions of the left and right handle grips 7, respectively.

Further, as shown in FIG. 2, the light emitting diodes 20 may be provided on the front surface of the front basket 8, the rear surface of the saddle 12, the rear surface of the mudguard 13 of the rear wheel 2, and the like. A substrate (not shown) of the electric circuit for each of the light emitting diodes 20 described above.
May be properly attached to the body of the bicycle. Further, it is not necessary to provide all of the above-mentioned light emitting diodes 20 on one bicycle, and for example, a combination of a headlight section and a saddle section, or a front cage and a mudguard for rear wheels is suitable.

FIG. 1 is a circuit block diagram of the device of the present invention. D is a hub generator installed on the axle portion of the front wheel 1 of the bicycle, 22 is a rectifier circuit, and 23 is a relay / condenser drive unit, for example, a comparator M51207. L, and other IC or C-MOSIC may be used. Reference numeral 24 denotes an optical sensor, which uses, for example, CdS, and drives the relay 25 and the condenser 26 by the comparator 23 at the time of traveling with lighting required. Reference numeral 11 denotes a light bulb of the headlight 9, which is opened and closed by the contact 25a of the relay 25 with the hub generator D. 26 is a capacitor, the capacity of which is several light emitting diodes 20
It should be blinkable for 2 minutes. 27 is an astable multivibrator, which may be a transistor or an IC. A voltage check unit 28 drives the non-stable multivibrator 27 when the output of the hub generator D is exhausted, and may use an empty terminal of the above-mentioned comparator M51207L or may be composed of a transistor. Reference numeral 20 is a light emitting diode provided at a desired portion of the bicycle as described above.

That is, according to the present invention, the hub generator D provided on the axle of the bicycle, the headlight 9 and the light emitting diode 20 provided at a desired portion of the bicycle, the sensor 24 for detecting the brightness, and the A light bulb for the headlight 9 is provided by the hub generator D at the time of traveling when lighting is required.
11 is turned on, and after stopping when the vehicle needs to be turned on, the condenser 26 causes the light emitting diode to stay for a certain period of time.
Make 20 blink.

Next, the operation of the device of the present invention constructed as described above will be explained. Since the amount of light received is large during the day, an optical sensor
The resistance value of 24 (CdS) is small, and the resistance value is large at night. This change in resistance value is applied to the relay / condenser drive unit 23
It detects as a voltage at, and when this value exceeds the set value, a current flows through the relay 25 and the capacitor 26. Then, in the relay 25, the contact 25a is closed and the light bulb 11 is turned on. On the other hand, the voltage check unit 28 detects the output of the hub generator D,
The unstable multi-vibrator 27 is stopped while the vehicle is running. Therefore, the light emitting diode 20 does not blink, and
The capacitor 26 has been charged and no further current will flow. When the bicycle stops in this state, the output of the hub generator D disappears, and therefore the voltage check unit 28 uses the charging current of the capacitor 26 to drive the unstable multivibrator 27 to blink the light emitting diode 20. When the bicycle resumes running from a stopped state, the voltage check unit 28 causes the unstable multivibrator to be released.
27 stops and the light emitting diode 20 stops blinking.

Since the present invention is as described above, it has the following effects. (1) A hub generator with a light driving force is used as the power source so that power is constantly generated while the bicycle is running.Therefore, an optical sensor (CdS) that detects whether the surroundings are bright or dark automatically activates when it gets dark. The light bulb can be turned on. (2) The light-emitting diode can be blinked for a certain period of time at night even when stopped by the current charged in the capacitor, so that other passersby and car drivers can be informed of the existence of the bicycle. (3) In the present invention, the power source of the illumination is only the hub generator of the bicycle wheel, and the light emitting diode also uses the charging current from the hub generator, so it can be used for other dry batteries and secondary batteries (batteries and NiCd batteries). In addition to being economical, there is no risk of malfunction due to battery exhaustion or self-discharge. (4) Charging is completed in a short time because a capacitor with a capacity that can blink several light emitting diodes for 1 to 2 minutes is used.
The effect on the illuminance of the light bulb is also slight. INDUSTRIAL APPLICABILITY As described above, the device of the present invention is economical, requires no trouble to turn on or off the light, and has high night visibility. Therefore, according to the present invention, an automatic lighting device for a bicycle that greatly contributes to traffic safety is provided. The excellent effect that it can be provided is obtained.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a device of the present invention.

FIG. 2 is a side view of a bicycle equipped with the device of the present invention.

FIG. 3 is a partial perspective view showing a state in which a light emitting diode is mounted on a handle portion.

FIG. 4 is a partially cutaway perspective view showing a state in which a light emitting diode is mounted in a headlight.

FIG. 5 is a cross-sectional view showing an example of a bicycle hub generator used as a power source in the present invention.

[Explanation of symbols]

1 Front Wheel 2 Rear Wheel 3 Frame Main Body 4 Front Hawk 5 Handle Post 6 Handlebar 7 Handle Grip 8 Front Cargo 9 Headlight 10 Lamp Case 11 Light Bulb 12 Saddle 13 Mudguard 14 Axle 15 Hub Body 16 Fixed Cylindrical Body 17 Power Generation Coil body 18 Magnet 19 Rotor A Planetary transmission device D Hub generator 20 Light emitting diode 21 Substrate 22 Rectifier circuit 23 Relay / condenser drive (comparator M51
207 L) 24 Optical sensor 25 Relay 26 Condenser 27 Astable multivibrator 28 Voltage check section

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location H01L 33/00 J 8934-4M H03K 17/94 F 7827-5J

Claims (1)

[Claims] 1. A hub generator provided on an axle of a bicycle,
A headlight and a light emitting diode provided at a desired position of the bicycle, a sensor for detecting brightness, a circuit for controlling lighting by this sensor, and a capacitor are provided, and the hub generator is used for headlighting when traveling with lighting required. An automatic lighting device for a bicycle, characterized in that a light is turned on and a light emitting diode is made to blink for a certain period of time by the condenser after stopping when the vehicle needs to be turned on.