DE202008001712U1 - A dynamo powered lighting device of a bicycle - Google Patents

Abstract

From a dynamo powered lighting device of a bicycle, wherein a permanent magnet (20) is arranged on a spoke (11) and formed as a rotor, an induction winding (30) on a fork (12) arranged and designed as a stator, the induction coil (30) is cut by magnetic lines, so that an electric Power is generated, which is passed to a light generating unit (50) is when the rotor rotates, characterized in that between the induction coil (30) and the light generating unit (50) Control unit (40) is provided, the at least one detector (41), a filter (42) and a throttle resistor (43), and the detector (41), the filter (42) and the throttle resistance (43) are connected to an electronic circuit.

Description

The The present invention relates to a lighting device powered by a dynamo a bicycle, wherein the electrical output voltage stabilized is so that the operation of the entire device and ensures a desired light intensity are.

at known bicycles and fitness bikes the wheels driven by the pedaling movement of the pedals for rotation, wherein a permanent magnet disposed on the spoke and formed as a rotor is, further provided an induction winding on the fork and is formed as a stator, wherein the induction winding of magnetic lines is cut, so that an electric current is generated, the is guided under control to a light generating unit, when the rotor is turning.

There the two permanent magnets are arranged at a large distance, the current generated by the induction coil is in a state intermittently, and the wave vibration is very strong, so that the light intensity the light generating unit is unstable. Therefore, the known Devices unable, as a headlight or taillight To achieve a stable lighting, so that their application is limited and it is very light, the operation and the life of the whole Negative effect on the device.

Of the The present invention is based on the object, one of a Dynamo furnished bicycle lighting device.

These Problem is solved according to the present invention by one of a dynamo supplied lighting device of the bicycle, wherein a permanent magnet arranged on a spoke and designed as a rotor, a Induction winding arranged on a fork and designed as a stator is, the induction winding is cut by magnetic lines, so that an electric current is generated, which is a light-generating unit guided is when the rotor rotates; being between the induction coil and the light generating unit is provided with a control unit, the at least one detector, a filter and a throttle resistance includes, and the detector, the filter and the throttle resistance connected to an electronic circuit.

In A development of the present invention is the throttle resistance adjustable designed.

In a development of the present invention, the induction coil two connections on, the detector with a connection of the induction winding connected, the filter with the detector and with the other connection the induction resistance is connected, the throttle resistance connected to the detector and connected in parallel to the filter is, and the light generating unit with the throttle resistance and connected to the filter.

In A development of the present invention comprises the control unit additionally a turn signal with the throttle resistance and with the light generating unit connected is.

In A development of the present invention is the light generating unit designed as LED.

at The present invention provides detection and filtering of the electric current, as well as the reverse current lock and the reduction reach the resonant frequency, so that the life of the entire Device extended and the desired one luminous intensity the light generating unit guaranteed are. The current generated in the present invention can be its Application with different lighting devices of the bicycle and its application is not limited to a flashing warning lamp.

in the The invention will be described below with reference to embodiments with reference to FIG the drawing described in detail. In the drawing shows:

1 the lighting device according to the invention when used on a bicycle in front view, shown schematically;

2 the lighting device according to the invention when used on a rear wheel of the bicycle, shown schematically;

3 Control according to the invention in block diagram, shown schematically;

4 the lighting device according to the invention in a flow chart, shown schematically; and

5 a second embodiment of the lighting device according to the invention, shown schematically.

following The present invention will be better understood by reference to some of the drawings illustrated embodiments explained in more detail the understanding the design, features and other objects of the present To facilitate invention.

• – mindestens einen Permanentmagneten 20, der an einer frei drehbaren Speiche 11 angeordnet und als Rotor ausgebildet ist;
• – eine Induktionswicklung 30, die zwei Anschlüsse aufweist, an einer Gabel 12 angeordnet und als Stator ausgebildet ist, wobei die Induktionswicklung 30 von Magnetlinien geschnitten wird, so dass ein elektrischer Strom zwischen den beiden Anschlüssen erzeugt ist;
• – eine Steuereinheit 40, umfassend mindestens einen Detektor 41, der mit dem einen Anschluss der Induktionswicklung 30 verbunden ist; einen Filter 42, der mit dem Detektor 41 und mit dem anderen Anschluss der Induktionswicklung 30 verbunden ist; und einen Drosselwiderstand 43, der mit dem Detektor 42 verbunden und parallel zu dem Filter 42 geschaltet ist, wobei der Detektor 41, der Filter 42 und der Drosselwiderstand 43 zu einer elektronischen Schaltung verbunden sind, wobei der Detektor 41 derart gestaltet ist, die Polarität der elektrischen Spannung zu detektieren und den Rückwärtsstrom zu sperren; der Filter 42 so ausgelegt ist, den erzeugten elektrischen Strom zu filtern und seine Resonanzfrequenz zu reduzieren; und
• – eine LED-Lichterzeugungseinheit 50, die mit dem Drosselwiderstand 43 und mit dem Filter 42 verbunden ist, so dass der von der Steuereinheit 40 bearbeitete und abgegebene Strom zu der LED-Lichterzeugungseinheit 50 geführt ist und dadurch die gewünschte Beleuchtungswirkung erreicht ist.

As in the 1 to 4 shown, embraces the present invention

• - At least one permanent magnet 20 , which is connected to a freely rotating spoke 11 arranged and designed as a rotor;
• - an induction winding 30 , which has two connections, on a fork 12 arranged and formed as a stator, wherein the induction coil 30 is cut by magnetic lines, so that an electric current is generated between the two terminals;
• - a control unit 40 comprising at least one detector 41 that with the one connection of the induction winding 30 connected is; a filter 42 that with the detector 41 and with the other terminal of the induction coil 30 connected is; and a throttle resistance 43 that with the detector 42 connected and parallel to the filter 42 is switched, the detector 41 , the filter 42 and the throttle resistance 43 are connected to an electronic circuit, wherein the detector 41 is designed to detect the polarity of the electrical voltage and to block the reverse current; the filter 42 is designed to filter the generated electric current and to reduce its resonant frequency; and
• An LED light generating unit 50 that with the throttle resistance 43 and with the filter 42 connected, so that of the control unit 40 processed and discharged power to the LED light generating unit 50 is guided and thereby the desired lighting effect is achieved.

As in the 3 and 4 shown, the induction winding 30 cut during the rotation of the rotor of magnetic lines, so that the momentarily excited pulsating current is generated. Only after the detection and filtering of the control unit 40 the power becomes the light generating unit 50 so that the stabilization and filtering of the waveform of the electric current are achieved, and the state with interruption and oscillation is effectively reduced. In the present invention, the light intensity of the light generating unit 50 guaranteed in a certain area. The throttle resistance 43 is adjustable, so that the light intensity of the light generating unit 50 is controllable. Since the light intensity is fixed after the control, the large change in the light intensity occurring in the conventional lighting device is avoided. In the present invention, the stable illumination of the front lamp and the rear light is achieved in the bicycle. As a result, the powered by the dynamo lighting device of the bicycle is improved. By stabilizing the electric current is a long life of the light generating unit 50 or corresponding components, so that the stability of the entire device is effectively improved.

In 5 the second embodiment of the present invention is shown, wherein the control unit 50 in addition a turn signal 44 includes that with the throttle resistance 43 and with the light generating unit 50 is connected, and a blinking warning effect of the light generating unit 50 under control of the turn signal 44 is reached.

In summary can powered by a dynamo lighting device of the Bicycle according to the present invention as a front lamp or tail light with desired Light intensity used be, with the desired Operation and the desired size Life of the entire device is guaranteed.

11

spoke

12

fork

20

permanent magnet

30

induction coil

40

control unit

41

detector

42

filter

43

throttle resistance

44

indicator

50

Light generating unit

Claims (5)

A dynamo powered lighting device of a bicycle, wherein a permanent magnet ( 20 ) on a spoke ( 11 ) is arranged and designed as a rotor, an induction winding ( 30 ) on a fork ( 12 ) is arranged and designed as a stator, the induction winding ( 30 ) is cut by magnetic lines, so that an electric current is generated, which leads to a light generating unit ( 50 ) is guided, when the rotor rotates, characterized in that between the induction winding ( 30 ) and the light generating unit ( 50 ) a control unit ( 40 ) is provided, the at least one detector ( 41 ), a filter ( 42 ) and a throttle resistance ( 43 ), and the detector ( 41 ), the filter ( 42 ) and the throttle resistance ( 43 ) are connected to an electronic circuit. Lighting device according to claim 1, characterized in that the throttle resistance ( 43 ) is designed adjustable. Lighting device according to claim 1 or 2, characterized in that the induction winding ( 30 ) has two terminals, the detector ( 41 ) with a connection of the induction winding ( 30 ), the filter ( 42 ) with the detector ( 41 ) and with the other connection of the induction resistor ( 43 ) connected is, the throttle resistance ( 43 ) with the detector ( 41 ) and parallel to the filter ( 42 ), and the light generating unit ( 50 ) with the throttle resistance ( 43 ) and connected to the filter. Lighting device according to claim 1 or 2, characterized in that the control unit ( 40 ) additionally a turn signal ( 44 ) associated with the throttle resistance ( 43 ) and with the light generating unit ( 50 ) connected is. Lighting device according to claim 1 or 2, characterized in that the light-generating unit ( 50 ) is designed as an LED.