JP2017159674A - Rearward alarm device of bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rearward alarm device of a bicycle capable of preventing the safety of a bicycle from deteriorating during running.SOLUTION: A rearward alarm device of a bicycle includes a vehicle approach detection part 21 for detecting the existence of a vehicle approaching from behind a bicycle, an information processing part 22 for processing information from the vehicle approach detection part 21, and an alarm part 23 for issuing an alarm to a driver of the bicycle. A dynamo 8 for generating power by the rotation of a wheel (a front wheel) is provided in the bicycle, and the dynamo 8 supplies power to the vehicle approach detection part 21, the information processing part 22 and the alarm part 23. Consequently, it is prevented that the rearward alarm device cannot be driven because the power storage amount of a battery is consumed during running as in the case of supply power with the battery.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a bicycle rearward alarm device.

  For example, in Patent Document 1, a vehicle approach detection unit that detects the presence of a vehicle approaching from behind a bicycle, an information processing unit that processes information from the vehicle approach detection unit, and an alarm unit that issues a warning to a bicycle driver When the vehicle approach detection unit detects the presence of a vehicle approaching from behind the bicycle, the alarm unit issues a warning to the bicycle driver (in the above-mentioned patent document, a bicycle safety alarm). Device)). By providing this rear warning device on the bicycle, a warning is issued when the vehicle approaches from the rear of the bicycle, so that the driver can know in advance before approaching the vehicle, and safety can be improved. it can.

  As a method for specifically realizing such a configuration, a vehicle approach detection unit that emits electromagnetic waves such as a radar is attached to the rear part of the bicycle, and information from the vehicle approach detection unit is processed on a bicycle handle or the like. It is conceivable that a processing unit and an alarm unit that issues an alarm to a bicycle driver are attached, and the vehicle approach detection unit, the information processing unit, and the alarm unit are each equipped with a battery as a power source to supply power.

JP 2000-95169 A

  However, in the conventional rear warning device for bicycles, there is a risk that the amount of power stored in the battery may be consumed while the bicycle is running, and the rear warning device may not be driven. In this case, the safety of the bicycle while running is reduced. Resulting in.

  The present invention solves the above-described problems, and an object of the present invention is to provide a bicycle rearward alarm device that can prevent the safety of the bicycle from being lowered during traveling.

  In order to solve the above problems, the present invention provides a vehicle approach detection unit that detects the presence of a vehicle approaching from behind a bicycle, an information processing unit that processes information from the vehicle approach detection unit, and a bicycle driver. A bicycle rear warning device including a warning unit that issues a warning to a bicycle, wherein a dynamo that generates electric power by rotating a wheel is provided in the bicycle, and power is supplied from the dynamo to the vehicle approach detection unit, the information processing unit, and the warning unit It is characterized by being.

  According to this configuration, it is possible to supply power to the vehicle approach detection unit, the information processing unit, and the alarm unit by running the bicycle. Accordingly, when traveling, the vehicle approach detection unit, the information processing unit, and the alarm unit can always be supplied with power, and the amount of power stored in the battery can be consumed while the vehicle is running, as in the case of power supply with the battery, and the rear warning device cannot be driven. Can be prevented.

  In addition, the present invention is provided with a secondary battery, and can supply power to the vehicle approach detection unit, the information processing unit, and the alarm unit by the secondary battery when the bicycle is stopped and when traveling at a low speed. It is said that it is said.

  According to this configuration, when the bicycle is stopped or traveling at a low speed, the secondary battery supplies power to the vehicle approach detection unit, the information processing unit, and the alarm unit. Therefore, it is possible to detect the presence of a vehicle approaching from behind the bicycle and issue an alarm not only during normal traveling but also when the bicycle is stopped or when traveling at low speed.

  In the present invention, a vehicle speed detection unit that detects a traveling speed of a bicycle is provided in the information processing unit, and the information processing unit detects a vehicle presence detection range behind the bicycle according to the traveling speed of the bicycle. It is characterized by changing. In this case, it is preferable that the vehicle speed detection unit detects the traveling speed of the bicycle based on the frequency of the output from the dynamo (voltage change generated by the dynamo) during traveling. Further, it is preferable to change the presence detection range of the vehicle behind the bicycle as the bicycle speed increases.

  In the above configuration, when the speed of the bicycle is detected based on the output of the dynamo (frequency and voltage waveform of the output generated by the dynamo) during traveling, there is no need to separately provide a speed sensor for detecting the traveling speed of the bicycle. Manufacturing cost can be reduced. In addition, the vehicle from the rear during high-speed driving that makes it difficult to grasp the surrounding situation due to wind noise, etc., by changing the presence detection range of the vehicle behind the bicycle as the bicycle speed increases. Can be detected, and as the vehicle speed increases, it is possible to detect a subsequent vehicle that takes a longer inter-vehicle distance, and safety can be further improved.

  In addition, the information processing unit includes a host vehicle speed detection unit that detects a traveling speed of the bicycle and a vehicle speed detection unit that detects an approaching speed of a vehicle approaching the bicycle from behind. The relative speed with the bicycle may be calculated, and the alarm pattern may be changed according to the relative speed. According to this configuration, it is possible to reliably alert the situation where the danger increases according to the relative speed between the vehicle and the bicycle.

  Moreover, it is preferable to provide a power supply wiring that supplies power to the headlamp from the dynamo, and to provide a branch power supply unit that can be connected to a branch power supply wiring that branches and supplies power from the dynamo. According to this configuration, even when a vehicle approach detection unit and an alarm unit are not provided when purchasing a bicycle, a vehicle approach detection unit and an alarm unit are provided thereafter, and the vehicle approach detection unit is connected via the branch power supply wiring. In addition, the alarm unit can be connected to the dynamo to supply power.

  Further, the alarm unit may be configured to change the headlamp illumination state and issue a vehicle approach alarm. According to this configuration, when the vehicle approaches from the rear of the bicycle at night when it is difficult to see the bicycle from the vehicle, the headlight illumination state is changed, so the driver looks forward. It can be recognized that the vehicle is approaching from the rear of the bicycle.

  According to the present invention, a vehicle approach detection unit that detects the presence of a vehicle approaching from behind the bicycle, an information processing unit that processes information from the vehicle approach detection unit, and an alarm unit that issues an alarm to a bicycle driver A dynamo that generates electricity by rotation of a wheel is provided in the bicycle, and the vehicle approach detection unit, the information processing unit, and the alarm unit are fed from the dynamo to the vehicle approach detection unit and the information processing during traveling And the alarm unit are always powered. As a result, it is possible to prevent the rear alarm device from being unable to be driven due to the battery charge being consumed while the bicycle is running, as in the case of supplying power from the battery, and to maintain good bicycle safety. .

  In addition, by providing a secondary battery, the secondary battery can be configured to supply power to the vehicle approach detection unit, the information processing unit, and the alarm unit when the bicycle is stopped and / or when traveling at a low speed. It is possible to detect the presence of a vehicle approaching from the rear of the bicycle and issue an alarm not only during normal traveling but also when the bicycle is stopped or traveling at low speed, thereby improving safety.

  Also, a speed sensor that detects the traveling speed of the bicycle is configured by detecting the traveling speed of the bicycle based on the output of the dynamo (frequency and voltage waveform of the output generated by the dynamo) during traveling. There is no need to provide it separately, and the manufacturing cost can be reduced. In addition, the vehicle from the rear during high-speed driving that makes it difficult to grasp the surrounding situation due to wind noise, etc., by changing the presence detection range of the vehicle behind the bicycle as the bicycle speed increases. Can be detected, and as the vehicle speed increases, the following vehicle (rear vehicle) that increases the distance between the vehicles can also be detected, thereby further improving safety. In addition, there is an advantage that the power consumption of the vehicle approach detection unit and the like can be suppressed as compared with the case where the presence detection range of the rear vehicle is always maximized.

  In addition, the information processing unit includes a host vehicle speed detection unit that detects a traveling speed of the bicycle and a vehicle speed detection unit that detects an approaching speed of a vehicle approaching the bicycle from behind. The relative speed with the bicycle may be calculated, and the alarm pattern may be changed according to the relative speed. According to this configuration, it is possible to reliably alert the situation where the danger increases according to the relative speed between the vehicle and the bicycle.

  In addition, when a bicycle is purchased, a power supply wiring that supplies power to the headlamp from the dynamo is provided, and a branch power supply unit that can be connected to a branch power supply wiring that branches and supplies power from the dynamo is provided in the power supply wiring. Later, it is possible to provide a vehicle approach detection unit and an alarm unit, and connect and assemble them via the branch power supply wiring. That is, the rear alarm device for the bicycle can be retrofitted.

  In addition, when the alarm unit generates an alarm due to the approach of the vehicle, the illumination state of the headlamp is changed so that when the vehicle approaches from behind the bicycle, the illumination state of the headlamp is changed. Since it is changed, the driver can recognize that the vehicle is approaching from the rear of the bicycle while looking forward. That is, for example, when the alarm unit is attached to the bicycle handle and the driver is informed by the alarm display of the alarm unit, the line of sight must be temporarily dropped on the alarm display part, which is Although there is a risk of lowering, such a problem does not occur according to this configuration.

Overall side view of a bicycle equipped with a rear warning device according to an embodiment of the present invention The figure which shows the handle of the bicycle Block diagram showing the bicycle rear warning device The block diagram which shows the back alarm apparatus of the bicycle which concerns on the 2nd Embodiment of this invention. The block diagram which shows the back alarm apparatus of the bicycle which concerns on the 3rd Embodiment of this invention. The block diagram which shows the back alarm apparatus of the bicycle which concerns on the 4th Embodiment of this invention. The whole side view of the electric bicycle carrying the back warning device concerning other embodiments of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the left-right direction refers to a direction that goes to the left and right when riding a bicycle and facing the traveling direction. Further, the present invention is not limited to the arrangement of the following configurations in the left-right direction and the like.

  1 in FIG. 1 is a bicycle provided with a rear warning device according to an embodiment of the present invention. As shown in FIGS. 1 to 3, the bicycle 1 is built in a frame 2, a front wheel 3 and a rear wheel 4, a handle 5, a pedal 6, a headlamp 7, and a hub of the front wheel 3. A dynamo (a generator, which is a hub dynamo in which the dynamo is built in the hub in FIG. 1) 8, an information display device 9 attached to the handle 5, a saddle 12, a rear wheel cover 13, A loading platform 14 and the like are provided. The dynamo 8 generates electricity by the rotation of the front wheel 3 and supplies power to the headlamp 7 and the like via power supply wirings 11A and 11B connected to the headlamp 7.

  The bicycle 1 is further provided with a rear warning device. The rear warning device includes a vehicle approach detection unit 21 that detects the presence of a vehicle approaching from the rear of the bicycle 1, and an information processing unit 22 that processes information from the vehicle approach detection unit 21 (also functions as a control unit). And an alarm unit 23 that issues an alarm to the driver of the bicycle 1.

  As the vehicle approach detection unit 21, any method may be used as long as it can detect the presence of a vehicle approaching from the rear of the bicycle 1, and a rear (a predetermined angle obliquely rearward from the rear to the side). (Range) emits electromagnetic waves composed of radio waves such as microwaves and short waves, and light such as laser light and receives reflected waves reflected by the vehicle, and the information processing unit 22 analyzes the signal from the vehicle approach detection unit 21 The vehicle speed is detected (detected) by detecting the presence of the vehicle and receiving the reflected wave. As the vehicle approach detection unit 21, an optical sensor that receives light from a vehicle headlight or the like and detects the presence of a vehicle approaching from behind may be used. For example, as shown in FIG. 1, the vehicle approach detection unit 21 is attached to the rear wheel cover 13. However, the vehicle approach detection unit 21 may be attached to any location as long as the vehicle approach detection unit 21 can be disposed in a backward-facing posture. Alternatively, it may be attached below the saddle 12 or below the loading platform 14.

  For example, the alarm unit 23 notifies the vehicle that the vehicle is approaching from behind by a warning sound and displays a warning on the display unit provided in the information display device 9. The number and approach distance are also displayed. As shown in FIG. 3, it is preferable that the alarm unit 23 is provided in the information display device 9 to display a warning. It can be installed. In addition, when a vehicle is approaching from behind, it is preferable to notify with a warning sound and simultaneously display a caution on the display unit of the information display device 9. Only one of the above may be configured to be executable.

  Branch power supply wiring 24 (24A, 24A, 24A, 24A, 24B, 24A 24B) is provided with a branch power feeding section 25 that can be connected (detached). For example, the branch power supply unit 25 is assembled from the beginning of the sale of the bicycle 1, but the information display device 9, the vehicle approach detection unit 21, and the branch power supply wires 24 (24A, 24B) can be retrofitted. And the electric power which generate | occur | produces with the dynamo 8 is supplied (namely, electric power feeding) not only to the headlamp 7, but to the information display apparatus 9 and the vehicle approach detection part 21. FIG.

  The signal output from the vehicle approach detection unit 21 is preferably output to the information processing unit 22 wirelessly by short-range wireless communication (BLE: Bluetooth (registered trademark) Low Energy) or the like. A signal line may be provided to transmit a signal.

  In the above configuration, when the bicycle 1 is run, power is generated by the dynamo 8 along with the rotation of the wheel (the front wheel 3 in this embodiment), and power is supplied to the information display device 9 and the vehicle approach detection unit 21. Then, a signal related to the presence of a vehicle approaching from behind the bicycle 1 is output to the information processing unit 22 by the vehicle approach detection unit 21, and if there is a vehicle approaching from the rear, the driver of the bicycle 1 from the alarm unit 23. An alarm is issued. The vehicle approach detection unit 21 is configured to be able to detect a plurality of vehicles. When a plurality of vehicles approaching from the rear are detected, an alarm sound (a rhythm or pitch of an alarm sound is generated depending on the number of vehicles. , Change the type of sound, etc., display that multiple units are approaching (for example, blink the display area corresponding to the number of units, display the number corresponding to the number of units) When the approach speed is high, the volume is increased or the alarm display is blinked), but this is not restrictive.

  According to this configuration, by driving the bicycle 1, the dynamo 8 can supply power to the vehicle approach detection unit 21, the information processing unit 22, the alarm unit 23, and the like. Accordingly, the vehicle approach detection unit 21, the information processing unit 22, and the alarm unit 23 can always be supplied with power when traveling, and the amount of power stored in the battery is consumed during traveling as in the case where power is supplied with the battery, making it impossible to drive the rear warning device. Can be prevented, and the safety of the bicycle 1 can be maintained well.

  As shown in FIG. 4, in addition to the above configuration, a secondary battery 31 that can be charged by the dynamo 8 is provided, and the secondary battery 31 is charged during traveling, and the secondary battery 31 is stopped when the bicycle 1 is stopped and when traveling at low speed. The battery 31 may be configured to be able to supply power to the vehicle approach detection unit 21, the information processing unit 22, the alarm unit 23, and the like (second embodiment of the present invention).

  According to this configuration, even when the bicycle 1 that stops generating power from the dynamo 8 is stopped or when traveling at a low speed where the power generation amount of the dynamo 8 is low, the vehicle approach detection unit 21, the information processing unit 22, and the Electricity is supplied to the alarm unit 23 and the like, and the presence of a vehicle approaching from behind the bicycle 1 can be detected and an alarm can be issued, further improving safety. It should be noted that the timing of supplying power from the secondary battery 31 may be when the bicycle 1 is stopped or when traveling at a low speed. Even in this case, when the secondary battery 31 is not provided, the time when the rear alarm device can be driven Can be increased and safety can be improved. It should be noted that the power generation amount from the dynamo 8 may not be sufficient when the vehicle approach detection unit 21, the information processing unit 22, the alarm unit 23, and the headlamp 7 are supplied with power other than when stopping or traveling at a low speed. Power may be supplied at certain times.

  FIG. 5 is a block diagram showing a bicycle rearward alarm device according to the third embodiment of the present invention. As shown in FIG. 5, in the present embodiment, a host vehicle speed detection unit 32 that detects the traveling speed of the bicycle 1 is provided in the information processing unit 22. Then, the information processing unit 22 changes the presence detection range of the vehicle behind the bicycle 1 according to the traveling speed of the bicycle 1. As a method for detecting the traveling speed of the bicycle 1, for example, the voltage and frequency of the electrical output are proportional to the rotational speed of the dynamo 8 that rotates corresponding to the wheel (front wheel 3). The traveling speed of the bicycle 1 is detected based on the electrical output (the frequency and voltage waveform of the output generated by the dynamo 8).

  In the above configuration, if the vehicle speed of the bicycle 1 is detected based on the output frequency of the dynamo (voltage change generated by the dynamo) during traveling, there is no need to provide a separate speed sensor for detecting the traveling vehicle speed of the bicycle 1. Manufacturing cost can be reduced.

  In addition, the higher the vehicle speed of the bicycle 1, the larger the vehicle presence detection range behind the bicycle 1, so that it becomes difficult to grasp the surrounding situation due to wind noise, etc. It is possible to detect the approach of the vehicle, and it is also possible to detect a succeeding vehicle that takes a longer inter-vehicle distance as the vehicle speed increases, thereby further improving safety. In addition, there is an advantage that the power consumption of the vehicle approach detection unit 21 and the like can be suppressed as compared with the case where the rear vehicle presence detection range is always maximized.

  FIG. 6 is a block diagram showing a bicycle rearward alarm device according to the fourth embodiment of the present invention. As shown in FIG. 6, in the present embodiment, based on the information obtained by the vehicle speed detection unit 32 that detects the traveling speed of the bicycle 1 and the vehicle approach detection unit 21, A vehicle speed detection unit 33 that detects the approach speed or the vehicle speed is provided in the information processing unit 22. And the information processing part 22 is comprised so that the relative speed of a vehicle and the bicycle 1 may be calculated, and the warning pattern output by a warning part according to relative speed may be changed.

  According to this configuration, it is possible to reliably alert the situation where the danger increases according to the relative speed between the vehicle and the bicycle 1, for example, the vehicle 1 despite the increase in the speed of the bicycle 1. Is alerted by the change of the alarm pattern to improve the safety.

  In the above embodiment, the case where warning display is performed on the display unit of the information display device 9 attached to the handle 5 when the approach of the vehicle is detected has been described. May be configured to warn the vehicle approach. In this case, as a method of changing the irradiation state of the headlamp 7, the emission color of the headlamp 7 is changed, or the pattern of the area to be lit is changed. Note that the emission color of a part of the region (for example, a region closer to both sides) may be changed, or a mark indicating a warning may be irradiated and displayed.

  According to this configuration, when there is a vehicle approaching from behind, the driver changes the irradiation state of the headlamp 7 without dropping his line of sight in order to see the display unit of the information display device 9. Accordingly, the driver can recognize that the vehicle is approaching from the rear of the bicycle 1 while looking forward, and can further improve safety. The operation for changing the irradiation state of the headlamp 7 may be performed in parallel with a warning display or a warning sound generation operation by a display unit of a normal information display device 9, or may be performed independently.

  In the above embodiment, the case where the dynamo 8 is a hub dynamo built in the hub of the bicycle 1 has been described. However, the dynamo is not limited to the hub dynamo built in the bicycle hub, but may be one that generates electricity by attaching coils or magnets to the spokes etc. on the outside of the bicycle hub. Any device may be used as long as it generates electricity by utilizing the rotation of the motor (if it is interlocked with the wheel).

  In the above embodiment, the case where the rear warning device is provided in a general bicycle is described. However, the present invention is not limited to this. As shown in FIG. 7, the bicycle has an electric auxiliary drive device 41. The electric bicycle 40 may be used. When provided in the electric bicycle 40, a battery 42 incorporating a secondary battery used as a power source allows the vehicle approach detection unit 21, the information processing unit 22, the alarm unit 23, etc. when the bicycle 1 is stopped and when traveling at a low speed. It is preferable that the power supply is configured to be capable of supplying power. In addition, the same code | symbol is shown to the thing of the function similar to the component shown in FIG. 1, In this embodiment, although the case where the vehicle approach detection part 21 is attached below the saddle 12 is shown, It is not limited.

DESCRIPTION OF SYMBOLS 1 Bicycle 2 Frame 3 Front wheel 4 Rear wheel 5 Handle 7 Headlight 8 Dynamo 9 Information display apparatus 11A, 11B Power supply wiring 12 Saddle 13 Rear wheel cover 14 Carriage 21 Vehicle approach detection part 22 Information processing part 23 Alarm part 24 (24A 24B) Branch feed wiring 25 Branch feed unit 31 Secondary battery 32 Own vehicle speed detection unit 33 Vehicle speed detection unit 40 Electric bicycle 41 Auxiliary drive device 42 Battery (secondary battery)

Claims (8)

A bicycle equipped with a vehicle approach detection unit that detects the presence of a vehicle approaching from the rear of the bicycle, an information processing unit that processes information from the vehicle approach detection unit, and an alarm unit that issues an alarm to a bicycle driver A rear warning device,
A dynamo that generates electricity by rotating the wheel is installed on the bicycle,
A bicycle rear warning device characterized in that power is fed from a dynamo to the vehicle approach detection unit, the information processing unit, and the alarm unit (having wiring).   A secondary battery is provided, and at least one of when the bicycle is stopped and when traveling at a low speed, the secondary battery can supply power to the vehicle approach detection unit, the information processing unit, and the alarm unit. The bicycle rear warning device according to claim 1, wherein:   A vehicle speed detection unit for detecting a traveling speed of a bicycle is provided in the information processing unit, and the information processing unit changes a presence detection range of a vehicle behind the bicycle according to the traveling speed of the bicycle. The bicycle rear alarm device according to claim 1 or 2.   The bicycle rear alarm device according to claim 3, wherein the own vehicle speed detecting unit detects a traveling speed of the bicycle based on an output of a dynamo during traveling.   5. The bicycle rear alarm device according to claim 3, wherein the information processing unit changes the presence detection range of the vehicle behind the bicycle to increase as the traveling speed of the bicycle increases. The information processing unit includes a host vehicle speed detection unit that detects a traveling speed of the bicycle and a vehicle speed detection unit that detects an approach speed of a vehicle approaching the bicycle from behind.
The bicycle rear warning device according to claim 1, wherein the information processing unit calculates a relative speed between the vehicle and the bicycle and changes an alarm pattern according to the relative speed. A power supply wiring for supplying power to the headlight from the dynamo is provided,
The bicycle according to any one of claims 1 to 6, wherein the power supply wiring is provided with a branch power supply unit that can be connected to a branch power supply wiring that branches and supplies the power from the dynamo. Rear warning device.   The bicycle rear alarm device according to any one of claims 1 to 7, wherein the alarm unit changes the irradiation state of the headlamp to perform an alarm of approach of the vehicle.

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