TW201903721A - Rear vehicle proximity warning system - Google Patents

Abstract

The present invention provides a rear vehicle proximity warning syetem which is applied to, and disposed on a driving vehicle. The rear vehicle proximity warning system comprises a taillight device. The taillight device comprises a distance detector, a light emitting unit, a sound element and a controller. The distance detector is used to detect a distance value between at least one rear vehicle and the driving vehicle. The controller drives the sound element to send a different frequency of sound by the magnitude of the distance value detected by the distance detector. Accordingly, the sound sent out from the rear vehicle proximity warning system is able to remind a rider of the driving vehicle that there is a vehicle in the rear to be approached.

Description

Rear vehicle approach warning system

The invention relates to a rear vehicle approach warning system, in particular to a warning system for improving the driving safety of a vehicle vehicle.

With everyone's emphasis on environmental protection, people have become a trend by using bicycles as a means of transportation. When people ride a bicycle, they usually need to look back at the rear to know if there is a vehicle approaching at the rear. However, some knights have poor riding habits. When they are not sure whether there is a car coming in, they will change direction voluntarily, so that the accidents of rear vehicle collisions are endless, which jeopardizes the safety of others.

In order to ensure the safety of the bicycle, a reflective sheet or a warning light is usually arranged on the rear baffle or the seatpost of the bicycle to remind the rear vehicle to pay attention to the bicycle in front by the light displayed by the reflector or the warning light. However, the function of the traditional reflector or warning light is only to emit light behind the bicycle. The Cavaliers still need to look back at the rear, otherwise it is impossible to confirm whether there is a car coming in behind. Moreover, when the Cavaliers turn back, they cannot focus on the road ahead, so there is still a greater risk in riding.

An object of the present invention is to provide a rear vehicle approach warning system, wherein the warning system is applied to a bicycle or a locomotive and includes a controller, a distance detector, an illumination unit and an acoustic component, and the distance detection The device detects a distance value between the at least one rear vehicle and the bicycle, and the controller drives the sound component to emit sounds of different frequencies according to the distance value detected by the distance detector. Thus, the sound component of the tail light device is utilized. Sounds of different frequencies are issued to alert the rider to the rear of the car.

Another object of the present invention is to provide a rear vehicle approach warning system, the warning system further comprising a front prompting device including a plurality of indicator lights, the front prompting device being disposed at a position visible in front of the bicycle rider, the indicator lights respectively Generating different colors of light, the controller of the tail light device generates a corresponding light signal indicating signal according to the distance value detected by the distance detector, and when the light signal is wirelessly transmitted to the front prompting device, The front prompting device emits light according to the indication of the light signal indicating signal to drive one of the indicator lights. Thus, the front prompting device emits different light indications to warn the bicycle rider to have the rear approaching.

Another object of the present invention is to provide a rear vehicle approach warning system, the warning system further comprising a front prompting device including an acoustic component, and the controller of the taillight device is based on the distance value detected by the distance detector. The size is used to generate a corresponding sound frequency indicating signal. When the sound frequency indicating signal is wirelessly transmitted to the front prompting device, the front prompting device drives the sounding component to emit sounds of different frequencies according to the sounding frequency indicating signal, so that the front prompting device is utilized. The sound components emit sounds of different frequencies to alert the rider to the rear of the car.

Another object of the present invention is to provide a rear vehicle approach warning system, the warning system further comprising a front prompting device including a vibrator, and the controller of the tail light device is based on the distance value detected by the distance detector. The size is used to generate a corresponding vibration frequency indicating signal. When the vibration frequency indicating signal is wirelessly transmitted to the front prompting device, the front prompting device drives the vibrator to generate vibration of different frequencies according to the indication of the vibration frequency indicating signal, so that the front prompting device is utilized. The vibrator produces vibrations of different frequencies to alert the rider to the rear of the car.

In order to achieve the above object, the present invention provides a rear vehicle approach warning system, which is applied to a vehicle-mounted vehicle. The rear vehicle proximity warning system includes a tail light device, and the tail light device includes: a distance detector for detecting at least one rear a distance value between the vehicle and the vehicle vehicle; an illumination unit; an acoustic component; and a controller connected to the distance detector, the illumination unit and the acoustic component, the controller is detected by the distance detector The distance value is sized to drive the sound element to emit sound at different frequencies.

In an embodiment of the invention, the controller defines a plurality of vehicle door threshold values, and each of the vehicle distance threshold values is respectively set by the controller to sound corresponding to a specific frequency, and the distance between the rear vehicle and the vehicle vehicle is lower than When one of the cars is at a threshold value, the controller drives the sound component to emit a sound corresponding to a specific frequency.

In an embodiment of the invention, the controller drives the illumination unit to emit bright light of different frequencies according to the distance value detected by the distance detector.

In an embodiment of the invention, the controller has a plurality of vehicle distance thresholds, and each of the vehicle thresholds is respectively set by the controller to correspond to a specific frequency of light, and the distance between the rear vehicle and the vehicle is lower than When one of the distances is from the threshold value, the controller drives the illumination unit to emit a light of a specific frequency.

In an embodiment of the invention, the distance detector is a radar range finder, a laser range finder, an image range finder or an ultrasonic range finder.

In an embodiment of the invention, the tail light device further includes a first wireless communication component connected to the controller, and the rear vehicle proximity warning system further includes a front prompting device, the front prompting device comprising: a second wireless communication component, and the taillight device And the front prompting device is communicably connected to the second wireless communication component through the first wireless communication component; a vibrator; and a driver connecting the second wireless communication component and the vibrator; wherein the controller of the taillight device is based on the distance detector The detected distance value is correspondingly generated to generate a vibration frequency indication signal, and the vibration frequency indication signal is transmitted to the front prompting device via the first wireless communication component and the second wireless communication component, and the driver of the front prompting device indicates the signal according to the vibration frequency. The indication is to drive the vibrator to generate vibration.

In an embodiment of the invention, the controller defines a plurality of vehicle door threshold values, and each of the vehicle distance threshold values is respectively set by the controller to correspond to a specific frequency of vibration, and the distance between the rear vehicle and the vehicle vehicle is lower than When one of the distances is from the threshold value, the driver instructs the vibrator to generate a specific frequency of vibration according to the indication of the vibration frequency indication signal.

The invention further provides a rear vehicle approach warning system, which is applied to a vehicle-mounted vehicle. The rear vehicle proximity warning system comprises: a tail light device, comprising: a distance detector for detecting at least one rear vehicle and vehicle vehicle a distance value; an illumination unit; a first wireless communication component; and a controller, connected to the distance detector, the illumination unit and the first wireless communication component; and a front prompting device, comprising: a second wireless communication The component, the tail light device and the front prompting device are communicatively connected to the second wireless communication component through the first wireless communication component; the plurality of indicator lights, each of the indicator lights respectively emitting different colors of light; and a driver connecting the second wireless communication component and the plurality of An indicator light; wherein the controller of the tail light device generates a corresponding light indicator signal according to the distance value detected by the distance detector, and the light signal indicates the second wireless communication via the first wireless communication component The component is transmitted to the front prompting device, and the driver of the front prompting device is correspondingly driven according to the indication of the signal indicating signal One indicator glittered.

In an embodiment of the invention, the controller has a plurality of vehicle door threshold values, and the vehicle door threshold values are respectively set by the controller to correspond to respective indicator lights, and the distance between the rear vehicle and the vehicle vehicle is lower than the value. When a vehicle is at a threshold value, the driver emits an indicator light corresponding to the threshold value of one of the vehicle distances according to the indication of the signal indication signal.

The invention further provides a rear vehicle approach warning system, which is applied to a vehicle-mounted vehicle. The rear vehicle proximity warning system comprises: a tail light device, comprising: a distance detector for detecting at least one rear vehicle and vehicle vehicle a distance value; an illumination unit; a first wireless communication component; and a controller, connected to the distance detector, the illumination unit and the first wireless communication component; and a front prompting device, comprising: a second wireless communication The component, the taillight device and the front prompting device are communicatively coupled to the second wireless communication component through the first wireless communication component; an acoustic component; and a driver connected to the second wireless communication component and the acoustic component; wherein the controller of the taillight device is based on The distance value detected by the distance detector is correspondingly generated to generate an audible frequency indication signal, and the audible frequency indication signal is transmitted to the front prompting device via the first wireless communication component and the second wireless communication component, and the driver of the front prompting device According to the indication of the sound frequency indication signal, the sound of the different frequency is driven corresponding to the driving sound element

Please refer to FIG. 1 , which is a schematic structural view of an embodiment of a rear vehicle approach warning system according to the present invention. As shown in FIG. 1, the rear vehicle approach warning system 100 is applied to a bicycle or a locomotive or the like, and includes a taillight device 10. The tail light device 10 is disposed at a rear bezel of the traveling vehicle, a seatpost, or a position that allows the driver of the rear vehicle to see the taillight device 10 emit light.

The tail light device 10 includes a controller 11, a light emitting unit 13, a distance detector 15, an acoustic component 17, and a power supply unit 19. The controller 11 is connected to the light emitting unit 13, the distance detector 15, the sound element 17, and the power source unit 19, respectively. The acoustic element 17 is a buzzer or an element that produces an acoustic sound. The power unit 19 can be a capacitor module for supplying the working energy required for the operation of the tail light device 10. The light-emitting unit 13 is composed of a plurality of LED light-emitting elements. When the vehicle is traveling, the lighting unit 13 will emit a bright light to remind the driver of the rear vehicle to pay attention to the preceding vehicle.

The distance detector 15 is configured to detect a distance value 151 between the at least one rear vehicle and the vehicle. In an embodiment of the invention, the distance detector 15 is a radar range finder that detects the distance value 151 between the rear vehicle and the vehicle vehicle in a radar wave manner. In another embodiment of the present invention, the distance detector 15 is a laser range finder that detects the distance value 151 between the rear vehicle and the vehicle vehicle in a laser light manner. Alternatively, in another embodiment of the present invention, the distance detector 15 is an image range finder that detects the image of the rear vehicle and analyzes the position of the rear vehicle in the image to detect the rear vehicle and the vehicle. The distance between the values is 151. Alternatively, in another embodiment of the present invention, the distance detector 15 is an ultrasonic range finder that detects the distance value 151 between the rear vehicle and the vehicle-mounted vehicle in an ultrasonic manner. Furthermore, ranging by radar wave, ranging by laser light, ranging by ultrasonic or ranging by analyzing images are commonly used to detect driving speed or distance. Technology, here, the technical content thereof will not be further detailed.

When the distance detector 15 detects the distance value 151 between the rear vehicle and the vehicle-mounted vehicle, the controller 11 drives the sound element 17 to emit sounds of different frequencies according to the magnitude of the distance value 151. In an embodiment of the invention, the controller 11 defines a plurality of vehicle distance thresholds 111, 112, 113, and each of the vehicle threshold values 111, 112, 113 is respectively set by the controller 11 to correspond to a specific frequency of sound. When the distance value 151 is lower than one of the distance thresholds 111/112/113, the controller 11 will drive the sound element 17 to emit a corresponding specific frequency of sound. For example, the vehicle distance threshold 111 is set to 30 meters. When the distance value 151 is lower than the vehicle threshold value 111, the controller 11 drives the sound element 17 to emit a sound of a frequency of 2 Hz; the vehicle threshold value 112 is set to 20 Metric, when the distance value 151 is lower than the distance threshold 112, the controller 11 will drive the sound element 17 to emit a higher frequency 4 Hz sound; the distance threshold 111 is set to 10 meters, when the distance value 151 is low At a distance of 113 from the threshold, the controller 11 will drive the acoustic element 17 to emit a higher frequency 8 Hz sound. Here, by controlling the sound element 17 to emit sounds of different frequencies to remind the rider of the vehicle, there is a need to pay attention to the rear approaching vehicle. Further, when the rear vehicle has passed the vehicle-mounted vehicle and is traveling in front of the vehicle-mounted vehicle, the controller 11 will control the sound element 17 to stop sounding.

Similarly, the controller 11 is also sized according to the distance value 151 between the rear vehicle and the vehicle-mounted vehicle to drive the light-emitting unit 13 to emit bright light of different frequencies. In an embodiment of the invention, each of the distance thresholds 111/112/113 is respectively set by the controller 11 to correspond to a specific frequency of light, when the distance value 151 is lower than one of the distance thresholds 111/112/113 At this time, the controller 11 will drive the light-emitting unit 13 to emit a corresponding specific frequency of light. For example, the vehicle door threshold value 111 is set to 30 meters. When the distance value 151 is lower than the vehicle door threshold value 111, the controller 11 will drive the light-emitting unit 13 to emit a light having a frequency of 2 Hz; the vehicle distance threshold value 112 is set to 20 Metric, when the distance value 151 is further lower than the distance threshold 112, the controller 11 will drive the illumination unit 13 to emit a higher frequency of 4 Hz light; the vehicle threshold value 111 is formulated to be 10 meters, when the distance value 151 is more Further below the distance threshold 113, the controller 11 will drive the illumination unit 13 to emit a higher frequency 8 Hz illumination. Herein, by controlling the illumination unit 13 to emit bright light of different frequencies to remind the driving of the rear vehicle, the vehicle currently traveling has gradually approached the front of the vehicle, and the safety of the vehicle needs to be paid attention to. Further, when the rear vehicle has passed the vehicle-mounted vehicle and is traveling in front of the vehicle-mounted vehicle, the controller 11 will control the light-emitting unit 13 to maintain a normally-on state.

Here, the present invention utilizes the light emitted by the light-emitting unit 13 of the tail light device 10 and the sound emitted by the sound element 17 to provide the two-way warning of the driver of the rear vehicle and the rider of the vehicle, thereby achieving safety on the road. Sex.

In still another embodiment of the present invention, the taillight device 10 further includes a first wireless communication component 12 coupled to the controller 11, and the rear vehicle proximity warning system 100 further includes a front prompting device 20. The front prompting device 20 is disposed at a position visible in front of the knight, for example, the front prompting device 20 is disposed on the front hand lever of the traveling vehicle. The front prompting device 20 includes a driver 21, a second wireless communication component 22, a plurality of indicator lights 231, 232, 233, and a power supply unit 29. The driver 21 is connected to the second wireless communication component 22, the indicator lights 231, 232, 233, and the power supply unit 29. The driver 21 is mainly used to drive the indicator lights 231, 232, 233 to emit bright light. The taillight device 10 and the front alert device 20 are communicatively coupled to the second wireless communication component 22 via the first wireless communication component 12. The first wireless communication component 12 and the second wireless communication component 22 are respectively components that conform to a Bluetooth communication standard specification or other short-range communication standard specifications. The power unit 29 can be a capacitor module for supplying the working energy required for the front prompting device 20 to operate.

Each of the indicator lights 231, 232, and 233 respectively emits different colors of light, for example, the indicator light 231 is an indicator light that emits green light, the indicator light 232 is an indicator light that emits blue light, and the indicator light 233 is a red light. Light indicator light.

The controller 11 of the tail light device 10 generates a light indication signal 115 according to the magnitude of the distance value 151 detected by the distance detector 15. The light indication signal 115 is transmitted to the front presentation device 20 via the first wireless communication component 12 and the second wireless communication component 22. The driver 21 of the front prompting device 20 emits light according to the indication of the light source indicating signal 115 to drive one of the indicator lights 231/232/233. Further, the controller formulates a plurality of vehicle distance thresholds 111, 112, 113, and each of the vehicle distance thresholds 111/112/113 is respectively set by the controller 11 to correspond to the respective indicator lights 231/232/233, when the rear vehicle When the distance value 151 between the vehicle and the vehicle is lower than one of the distance thresholds 111/112/113, the driver 21 drives the indicator corresponding to the threshold value 111/112/113 according to the indication of the light indication signal 115. 231/232/233 shines brightly.

For example, the vehicle distance threshold value 111 corresponds to the green light indicator light 231, the vehicle distance threshold value 112 corresponds to the blue light indicator light 232, and the vehicle distance threshold value 113 corresponds to the red light indicator light 233. When the distance value 151 between the rear vehicle and the vehicle-mounted vehicle is lower than the vehicle threshold value 111 (less than 30 m), the controller 11 generates an indication signal 115 for driving the green light number, and the driver 21 according to the green light number. The indication signal 115 drives the green light indicator 231 to emit green light. Alternatively, when the distance value 151 between the rear vehicle and the vehicle-mounted vehicle is further lower than the vehicle threshold value 112 (less than 20 m), the controller 11 generates an indication signal 115 for driving the blue light signal, and the driver 21 according to the blue light. The indicator signal 115 of the number drives the blue light indicator 232 to emit blue light. Alternatively, when the distance value 151 between the rear vehicle and the traveling vehicle is further lower than the distance threshold 113 (less than 10 m), the controller 11 generates an indication signal 115 for driving the red light, and the driver 21 is based on the red. The indicator signal 115 of the light source drives the red light indicator 233 to emit red light. Furthermore, in an embodiment of the invention, the indicator lights 231, 232, 233 will emit a bright light at a fixed frequency, for example, to emit light at a frequency of 1 Hz.

Here, the warning system 100 of the present invention uses the sound element 17 of the tail light device 10 to warn the knight that the rear of the car is approaching, and further uses the light indication of the front prompting device 20 to warn the knight that the rear of the car is approaching. In this way, the Cavaliers are reminded by multiple warnings so that the Cavaliers can pay more attention to the rear and ride carefully.

2 is a schematic structural view of still another embodiment of a rear vehicle approach warning system of the present invention. As shown in FIG. 2, the structure of the rear vehicle approach warning system 101 of the present embodiment is similar to the rear vehicle approach warning system 100 of the above embodiment, and the difference is that the acoustic component can be modified in the front prompting device 20, For example, the acoustic element 27. The acoustic element 27 is connected to the driver 21. In the present embodiment, the front prompting device 20 can be disposed on the front hand lever of the vehicle-mounted vehicle or on the body of the vehicle-mounted vehicle rider. For example, the front prompting device 20 can be made into a bracelet style and worn on the hand of the vehicle rider, or the front prompting device 20 can be made into a headphone style and worn on the rider's ear.

In the present embodiment, the controller 11 of the tail light device 10 generates an audible frequency indication signal 116 according to the magnitude of the distance value 151 detected by the distance detector 15. The acoustic frequency indication signal 116 is transmitted to the front prompting device 20 via the first wireless communication component 12 and the second wireless communication component 22, and the driver 21 of the front prompting device 20 issues a specific response to the corresponding acoustic driving component 27 according to the indication of the acoustic frequency indicating signal 116. The sound of the frequency. For example, when the distance value 151 between the rear vehicle and the vehicle-mounted vehicle is lower than the vehicle threshold value 111 (less than 30 m), the controller 11 will generate an indication signal 116 of an audible frequency of 2 Hz, and the driver 21 according to the acoustic frequency 2 Hz. The indication of the indication signal 116 is to drive the acoustic element 27 to emit a sound having a frequency of 2 Hz; when the distance value 151 between the rear vehicle and the traveling vehicle is further lower than the distance threshold 112 (below 20 m), the controller 11 will generate An audible frequency 4 Hz indication signal 116, the driver 21 is responsive to the indication of the audible frequency 4 Hz indication signal 116 to drive the acoustic element 27 to emit a higher frequency 4 Hz sound; or, when the distance between the rear vehicle and the vehicle vehicle is 151 Further lower than the threshold value 113 (below 10m), the controller 11 will generate an indication signal 116 of 8 Hz, and the driver 21 will drive the sound element 27 to emit more according to the indication of the indication signal 116 of the acoustic frequency of 8 Hz. High frequency 8Hz sound.

Here, the acoustic element 27 is placed in the front prompting device 20 that is closer to the knight's ear, so that the knight can more clearly hear the sound and focus on the rear of the approaching car. Of course, in still another embodiment of the present invention, the tail light device 10 and the front presentation device 20 can be simultaneously provided with the acoustic elements 17, 27. In addition, in another embodiment of the present invention, the front prompting device 20 reminds the knight to pay attention to the warning mode of the rear vehicle, and in addition to using the sound component 27 to emit an audible sound, the indicator lights 231, 232, and 233 can also be used together to give an indication of lighting. .

Please refer to FIG. 3 , which is a structural schematic diagram of still another embodiment of the rear vehicle approach warning system of the present invention. As shown in FIG. 3, the rear vehicle proximity warning system 102 includes a taillight device 10 and a front alert device 30. The configuration of the tail light device 10 of the present embodiment is the same as that of the tail light device 10 of Fig. 1, and will not be repeated here.

In the present embodiment, the front prompting device 30 is disposed on the body of the knight. For example, the front prompting device 30 can be made into a bracelet style and worn on the knight's hand, or the front prompting device 30 can be made into a headphone style and worn on the knight's ear. The front prompting device 30 includes a driver 31, a second wireless communication component 32, a vibrator 33, and a power supply unit 39. The driver 31 is connected to the second wireless communication unit 32, the vibrator 33, and the power supply unit 39. The driver 31 is mainly used to drive the vibrator 33 to vibrate. The front prompting device 30 is communicatively coupled to the tail light device 10 via the first wireless communication component 12 and the second wireless communication component 32. Similarly, the second wireless communication component 32 is an element that conforms to a Bluetooth communication standard specification or other short-range communication standard specification. The power unit 39 can be a capacitor module for supplying the working energy required for the front prompting device 20 to operate.

The controller 11 of the tail light device 10 generates a vibration frequency indication signal 117 according to the magnitude of the distance value 151 detected by the distance detector 15. The vibration frequency indication signal 117 is transmitted to the front presentation device 30 via the first wireless communication component 12 and the second wireless communication component 22. The driver 31 of the front prompting device 30 responds to the indication of the vibration frequency indicating signal 117 to drive the vibrator 33 to generate a vibration of a specific frequency. For example, when the distance value 151 between the rear vehicle and the vehicle-mounted vehicle is lower than the vehicle threshold value 111 (less than 30 m), the controller 11 generates an indication signal 117 with a vibration frequency of 2 Hz, and the driver 31 according to the vibration frequency of 2 Hz. The indication of the indication signal 117 is used to drive the vibrator 33 to generate a vibration of a frequency of 2 Hz; when the distance value 151 between the rear vehicle and the traveling vehicle is further lower than the distance threshold 112 (below 20 m), the controller 11 will generate a The indication signal 117 of the vibration frequency of 4 Hz, the driver 31 drives the vibrator 33 to generate a higher frequency (4 Hz) vibration according to the indication of the indication signal 117 of the vibration frequency of 4 Hz; or, when the distance between the rear vehicle and the vehicle-mounted vehicle is 151 Further lower than the threshold value 113 (below 10m), the controller 11 will generate an indication signal 117 with a vibration frequency of 8 Hz, and the driver 31 will drive the vibrator 33 to generate higher according to the indication of the indication signal 117 of the vibration frequency of 8 Hz. Vibration at a frequency of 8 Hz. Herein, the present invention not only uses the sound or bright light to remind the knight to pay attention to the rear of the car, but also uses the vibration to remind the knight to pay attention to the rear of the car.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, which is equivalent to the changes in shape, structure, features and spirit of the present invention. Modifications are intended to be included in the scope of the patent application of the present invention.

100‧‧‧ Rear Vehicle Approach Warning System

101‧‧‧ Rear Vehicle Approach Warning System

102‧‧‧ Rear Vehicle Approach Warning System

10‧‧‧Taillight device

11‧‧‧ Controller

111‧‧‧ distance threshold

112‧‧‧ distance threshold

113‧‧‧ distance threshold

115‧‧‧Signal indication signal

116‧‧‧Sound frequency indication signal

117‧‧‧Vibration frequency indication signal

12‧‧‧First wireless communication component

13‧‧‧Lighting unit

15‧‧‧ Distance detector

151‧‧‧ distance value

17‧‧‧Acoustic components

19‧‧‧Power unit

20‧‧‧Front prompting device

21‧‧‧ Drive

22‧‧‧Second wireless communication component

231‧‧‧ indicator light

232‧‧‧ indicator light

233‧‧‧ indicator lights

27‧‧‧Sound components

29‧‧‧Power unit

30‧‧‧Front prompting device

31‧‧‧ Drive

32‧‧‧Second wireless communication component

33‧‧‧ oscillator

39‧‧‧Power unit

Fig. 1 is a schematic view showing the structure of an embodiment of a rear vehicle approach warning system of the present invention.

Fig. 2 is a structural schematic view showing still another embodiment of the rear vehicle approach warning system of the present invention.

Fig. 3 is a structural schematic view showing still another application embodiment of the rear vehicle approach warning system of the present invention.

Claims (11)

A rear vehicle approach warning system is applied to a vehicle vehicle, the rear vehicle proximity warning system includes a tail light device, and the tail light device includes: a distance detector for detecting at least one rear vehicle and the vehicle vehicle a distance value; an illumination unit; an acoustic component; and a controller coupled to the distance detector, the illumination unit, and the acoustic component, the controller being detected by the distance detector The distance value is sized to drive the acoustic element to emit a different frequency of sound. The rear vehicle approach warning system according to claim 1, wherein the controller has a plurality of vehicle threshold values, and each of the vehicle thresholds is respectively set by the controller to correspond to a specific frequency sound. When the distance between the rear vehicle and the vehicle vehicle is lower than one of the distance thresholds, the controller drives the sound element to emit a sound corresponding to the specific frequency. The rear vehicle approach warning system of claim 1, wherein the controller drives the illumination unit to emit different frequencies of light according to the distance value detected by the distance detector. The rear vehicle approach warning system according to claim 3, wherein the controller has a plurality of vehicle distance threshold values, and each of the vehicle distance threshold values is respectively set by the controller to correspond to a specific frequency of light, when When the distance between the rear vehicle and the vehicle vehicle is lower than one of the distance thresholds, the controller drives the lighting unit to emit light corresponding to the specific frequency. The rear vehicle approach warning system according to claim 1, wherein the distance detector is a radar range finder, a laser range finder, an image range finder or an ultrasonic range finder. The rear vehicle approach warning system of claim 1, wherein the tail light device further includes a first wireless communication component connected to the controller, the rear vehicle proximity warning system further comprising a front prompting device, the front The prompting device includes: a second wireless communication component, the taillight device and the front prompting device are communicably connected to the second wireless communication component through the first wireless communication component; a vibrator; and a driver connecting the second wireless communication The component and the vibrator; wherein the controller of the tail light device generates a vibration frequency indication signal according to the magnitude of the distance value detected by the distance detector, and the vibration frequency indication signal is transmitted through the first wireless The communication component and the second wireless communication component are transmitted to the front prompting device, and the driver of the front prompting device drives the vibrator to generate vibration according to the indication of the vibration frequency indicating signal. The rear vehicle approach warning system according to claim 6, wherein the controller has a plurality of vehicle distance threshold values, and each of the vehicle distance thresholds is respectively set by the controller to correspond to a specific frequency of vibration. When the distance between the rear vehicle and the vehicle vehicle is lower than one of the vehicle threshold values, the driver instructs the vibrator to generate a vibration corresponding to the specific frequency according to the indication of the vibration frequency indication signal. A rear vehicle approaching warning system is applied to a line of vehicle-mounted vehicles. The rear vehicle approaching warning system comprises: a tail light device, comprising: a distance detector for detecting at least one rear vehicle and the vehicle-mounted vehicle a distance unit; a lighting unit; a first wireless communication component; and a controller connecting the distance detector, the lighting unit and the first wireless communication component; and a front prompting device, comprising: a second wireless a communication component, the taillight device and the front prompting device are communicably connected to the second wireless communication component through the first wireless communication component; a plurality of indicator lights, each of the indicator lights respectively emitting different colors of light; and a driver connecting the a second wireless communication component and the plurality of indicator lights; wherein the controller of the tail light device generates a corresponding light indicator signal according to the magnitude of the distance value detected by the distance detector, the light signal The indication signal is transmitted to the front prompting device via the first wireless communication component and the second wireless communication component, the front prompting device The driver emits light according to the indication of the signal indicating signal to drive one of the indicators. The rear vehicle approach warning system according to claim 8, wherein the controller has a plurality of vehicle door threshold values, and each of the vehicle distance threshold values is respectively set by the controller to correspond to the respective indicator light. When the distance between the rear vehicle and the vehicle vehicle is lower than one of the distance thresholds, the driver sends an indicator corresponding to the threshold value of the vehicle according to the indication of the light indication signal. Bright light. A rear vehicle approaching warning system is applied to a line of vehicle-mounted vehicles. The rear vehicle approaching warning system comprises: a tail light device, comprising: a distance detector for detecting at least one rear vehicle and the vehicle-mounted vehicle a distance unit; a lighting unit; a first wireless communication component; and a controller connecting the distance detector, the lighting unit and the first wireless communication component; and a front prompting device, comprising: a second wireless a communication component, the taillight device and the front prompting device are communicatively coupled to the second wireless communication component through the first wireless communication component; an acoustic component; and a driver connecting the second wireless communication component and the acoustic component; The controller of the tail light device generates an audible frequency indication signal according to the magnitude of the distance value detected by the distance detector, and the audible frequency indication signal is transmitted through the first wireless communication component and the second The wireless communication component is transmitted to the front prompting device, and the driver of the front prompting device indicates the signal according to the sound frequency The sound is emitted at different frequencies corresponding to driving the sound element. The rear vehicle approach warning system according to claim 10, wherein the controller has a plurality of vehicle distance threshold values, and each of the vehicle distance threshold values is respectively set by the controller to correspond to a specific frequency sound. When the distance between the rear vehicle and the vehicle vehicle is lower than one of the distance thresholds, the driver indicates an indication of the signal according to the sound frequency to drive the sound element to sound corresponding to the specific frequency.