JPH08310466A - Tail lamp device for bicycle - Google Patents

Abstract

PURPOSE: To provide a bicycle tail lamp device that is able to be clearly seen even from the rear aslant and also to make improvements in safety. CONSTITUTION: This tail lamp device is composed of a mounting part 1 attached to a rear fork F with a bolt 2 and a nut, a casing 12 being attached to this mounting part 1, a translucent reflector closing an opening of this casing 12, a dynamo being housed in the casing 12 in a state of projecting a dynamo roller 18, and energized by a compression coil spring so as to make this dynamo roller 18 be rotatably pressed to a rear wheel W from the side of a lateral face under pressure, and a tail lamp part consisting of a light emitting diode being installed in the casing 12, and emitted by electric power out of the dynamo and feeding the reflector with this light, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle tail light device for attaching a tail light for informing the existence of the vehicle rearward to a bicycle.

[0002]

2. Description of the Related Art A conventional reflector has a structure in which a reflector is attached to a rear fender with a fixture.

[0003]

In the conventional reflection device, the degree of reflection differs depending on the direction of light from the rear,
It was hard to see from diagonally behind. Therefore, the reflected light cannot be clearly seen from diagonally behind, which is a safety problem.

The present invention has been made in order to solve the above-mentioned inconvenience, and provides a bicycle taillight device which can be clearly seen even obliquely from the rear and can improve safety.

[0005]

A bicycle tail lamp device according to the present invention comprises a mounting portion mounted on a rear hawk of a bicycle with a mounting tool, and a tail lamp portion mounted on the mounting portion. . The rear light unit is housed in the casing with the casing attached to the mounting unit, the translucent reflector that closes the opening of the casing, and the dynamo roller in a protruding state. And a light emitting diode that is disposed in the casing and that emits light by the power from the generator and supplies the light to the reflector.

[0006]

When the mounting portion of the bicycle taillight device of the present invention is mounted on the rear fork, the dynamo roller of the generator is pressed against the rear wheel from the side. Therefore, when the rear wheel rotates, the dynamo roller rotates to supply power to the light emitting diode from the generator, so that the light emitting diode emits light. Then, the light from the light emitting diode is emitted through the reflector.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a partial perspective view showing a main part of a bicycle equipped with a bicycle taillight device according to an embodiment of the present invention.
Is a schematic perspective view in which the tail lamp part is partially disassembled, and FIG. 3 is an enlarged cross-sectional schematic view taken along line XX of FIG.

In these figures, F is the rear hawk, W
Indicates the rear wheel attached to the rear hawk F. The rear wheel W has a rim r and one end attached to the rim r, and the other end attached to a rear hub (not shown) rotatably attached to the lower end of the rear fork F. The plurality of spokes s, the tire t mounted around the rim r, and the tube u arranged in the space between the tire t and the rim r.

Reference numeral R denotes a bicycle tail lamp device, which is composed of a mounting portion 1 mounted on the rear fork F and a tail lamp portion 11 mounted on the mounting portion 1. The above-mentioned mounting portion 1 is U-shaped in which a groove for holding the rear fork F is formed, and is attached to the rear fork F by tightening the open end with bolts 2 and nuts as a mounting tool.

The above-mentioned rear caudal head portion 11 is a semitransparent casing 12 for closing the opening 14 of the casing 12 and a casing 12 in which the attaching piece 13 is attached to the attaching portion 1 with a bolt 2 and a nut for attaching the attaching portion 1 to the rear fork F. Reflective plate 15
And the casing 1 with the dynamo roller 18 protruding
2, a generator 17 biased by a compression coil spring 19 as a biasing member so that the dynamo roller 18 is rotatably pressed against the rear wheel W from the side surface side, and the casing 12
The light emitting diode 20 is built in the inside and emits light by electric power from the generator 17 to supply light to the reflector 15.

The reflector 15 is an annular fitting 16.
It is attached to the casing 12 so as to close the opening 14. The generator 17 is a small DC motor,
The power supply line connecting the generator 17 and the light emitting diode 20 is not shown. And Dynamorola 1
The diameter of 8 is set to about 10 mm so that a rotation speed of 3000 rpm or more can be obtained at 6 km / h, for example, when the diameter of the rear wheel W is 26 inches.

Next, the operation will be described. When the rear wheel W is rotated by running the bicycle, the dyno roller 18 is in pressure contact with the rim r, and thus the dynamometer roller 18 is rotated to supply electric power from the generator 17 to the light emitting diode 20 through the power supply line. Then, the light emitting diode 20 emits light. Then, the light from the light emitting diode 20 enters the reflection plate 15 and is emitted in a diffused state from the reflection plate 15, so that it is possible to notify the existence to the rear of the traveling and confirm the existence.

As described above, according to the embodiment of the present invention, the reflector 12, the generator 17 and the light emitting diode 20 are arranged in the casing 12 to form a unit, so that the mounting portion 1 is attached to the rear hawk F. By attaching the casing 12 together with the bolt 2 and nut,
Can be installed once. In the mounted state, since the dynamo roller 18 is constantly in pressure contact with the rim r, it is not necessary to operate the switch to make the light emitting diode 20 emit light.

Further, since the generator 17 is a small DC motor and the diameter of the dynamo roller 18 is small, the generator 17 can be rotated at high speed to obtain a large amount of electric power, and a bicycle can be used for power generation. The load can be reduced. Further, since the light is reflected by the reflector 15 and the light from the light emitting diode 20 is diffused by the reflector 15, the light can be clearly seen even from the diagonally rear side, so that the safety can be improved.

Since the dynamo roller 17 is brought into pressure contact with the rim r, it is possible to prevent the dirt and the like adhering to the tire t from adhering to the dynamo rotor 17 and causing the dynamo roller 17 to malfunction.

In the above embodiment, the dynamometer roller 18 is pressed against the rim r. However, the casing 12 itself is rotatably attached to the attachment portion 1, and the casing 12 is urged by a tire. bias toward the side of t,
The dynamo roller 18 may be pressed against the side surface of the tire t. Although the generator 17 has been described as an example of a DC motor, it goes without saying that it may be a normal generator.

Further, in order to prevent the number of rotations of the dynamo roller 18 from increasing more than necessary and not applying a voltage more than necessary to the light emitting diode 20, when the number of rotations of the dynamo roller 18 exceeds the set number of rotations, the dynamo roller 18 rotates. If a structure that does not transmit the rotation of the dynamo roller 18 is provided in the middle of the mechanism for transmitting, for example, a slip mechanism, a torque limiter, etc. are provided, it is possible to prevent damage to the light emitting diode 20 by applying an excessive voltage. .

Further, it is effective in terms of the durability of the generator 17 and the load on the light emitting diode 20 if a rotation speed control by a gear or the like and a slip mechanism are provided. And
A lock mechanism may be provided to lock and stop the dynamo roller 18 in a state of being pressed against the rear wheel W and the state in which the dynamo roller 18 is separated from the rear wheel W.

[0019]

As described above, according to the present invention, since the reflector, the generator and the light emitting diode are arranged in the casing to form a unit, the casing can be mounted when the mounting portion is mounted on the rear fork with the mounting tool. It can be attached at once by attaching together. Further, in the mounted state, since the dynamo roller is in pressure contact with the rear wheel, it is not necessary to operate the switch to make the light emitting diode emit light. Also, while reflecting the light with the reflector,
Since the light emitted from the light emitting diode is diffused by the reflector, it can be clearly seen even from the diagonally rear side, so that the safety can be improved.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a main part of a bicycle to which a bicycle taillight device according to an embodiment of the present invention is attached.

FIG. 2 is a schematic perspective view in which a tail lamp unit is partially disassembled.

FIG. 3 is an enlarged schematic sectional view taken along line XX of FIG.

[Explanation of symbols]

 F Rear Hawk W Rear Wheel R Bicycle Rear Lighting Device 1 Mounting part 2 Bolt 11 Rear lighting part 12 Casing 13 Mounting part 14 Opening 15 Reflector 16 Mounting tool 17 Generator 18 Dynamo roller 19 Compression coil spring 20 Light emitting diode

Claims (1)

[Claims] 1. A bicycle comprising a mounting portion mounted to a rear hawk of a bicycle with a mounting fixture, and a tail light portion mounted to the mounting portion, the tail light portion including a casing mounted to the mounting portion and the casing. And a semi-transparent reflector that closes the opening of the dynamo roller, the dynamo roller being housed in the casing in a protruding state, and the dynamo roller being biased to rotatably press the rear wheel from the side surface side. And a light-emitting diode which is disposed in the casing and emits light by the electric power from the generator to supply light to the reflector.