Portable active lighting device or such device mounted on a bicycle

Abstract

An active lighting device (1) of a bicycle comprises a first optical system (A) having first light source means (6) for long-distance lighting and a second optical system (B) having second light source means (7) for short-distance lighting, which are controlled by a control unit. It comprises a light sensor (3) for determining the light intensity of the location of the bicycle and allowing the control unit to adjust the light intensity of the light source if the light source is activated and the ambient light intensity is below a determined light threshold. Furthermore, a speed sensor (4a, 4b) is provided for determining the speed of the bicycle being used on the path, such that the control unit controls the activation of the light source of the first light source arrangement as a function of at least one determined speed threshold value. An orientation or inclination detector (5a, 5b, 5c) is also provided in order to select and adjust the light intensity of at least some light sources or some groups of light sources of the first and second light source arrangements.

Description

[0001] This application is a divisional application of invention patent application No. 201910781647.5, filed on August 23, 2019, and entitled “Portable active lighting device or the device mounted on a bicycle”. Technical Field

[0002] The present invention relates to a portable active lighting device or such a device mounted on a bicycle. Preferably, each lighting device has a first optical system and a second optical system arranged on the bicycle, wherein the first optical system has at least one first light source device and the second optical system has at least one second light source device. Background Art

[0003] Known ways to properly illuminate a path or road for a vehicle to travel include using lighting devices with adjustable configurations of light intensity produced by lamps or other light sources. Such lighting devices can also be adjusted to direct the light beam according to the corner to be turned in the dark or to not dazzle the driver of an oncoming vehicle on the road.

[0004] Patent application WO 2017 / 023293A1 discloses an intelligent lighting system for a two-wheeled vehicle such as a bicycle. It includes light-emitting diodes or LED devices that can be independently selected to define the desired light intensity. A motor is also provided to direct the light according to the height or inclination of the bicycle, and a motion or light intensity sensor, as well as a light device that works according to the speed of the bicycle. However, all LEDs are directed by the motor simultaneously rather than independently of each other. In addition, the document does not specify the orientation of each light beam emitted by the LED so as to adjust the illumination distance and intensity of each LED according to the detected speed or light intensity, which would constitute a defect.

[0005] Patent application US2018 / 0020528A1 discloses an intelligent lighting system for a bicycle. A light device may be provided on the front wheel fork of the bicycle or on the helmet of the rider. The light device includes a motion sensor for detecting acceleration and speed, and a device for rotating the light source according to the corner or speed and the movement of the rider's head so that the light beam always remains aligned with the rider's line of sight toward the road. However, the system does not envision orienting the two light sources in different ways to illuminate the road according to speed or ambient light, which would constitute a defect.

[0006] Patent document EP 3 036 149 B1 discloses a lighting device for a bicycle with a plurality of available LEDs. It is also provided with a light sensor. A control element is provided to compare the acceleration, orientation and speed of the rider with reference data. A selection of LEDs is also provided, but this does not involve orienting at least two light sources in different ways in order to illuminate the road being traveled, which constitutes a disadvantage.

[0007] Patent document FR 2 844 759 B1 also discloses a motorcycle headlight control system with a gyroscope. It is provided to direct the light, in particular according to the corner of the turn. However, the patent does not disclose directing at least two light sources in different ways and taking into account the detected speed and light intensity in order to illuminate the road being traveled, which constitutes a drawback. Summary of the invention

[0008] Therefore, the object of the present invention is to overcome the above-mentioned disadvantages and to provide a portable active lighting device (or "active lighting device") or such a device mounted on a bicycle having at least two wheels, which is easy to use and uncomplicated, thereby providing good lighting taking into account the speed or inclination of the bicycle.

[0009] To this end, the invention relates to a portable active lighting device or such a device to be mounted on a bicycle having at least two wheels, comprising the features of independent claim 1 or 2 .

[0010] Particular embodiments of the lighting device are defined in dependent claims 3 to 22 .

[0011] An advantage of the lighting device according to the invention is that the light sensor of the device detects the ambient light intensity in order to activate the light sources or groups of light sources of the optical systems A and B if the ambient light intensity falls below a determined light threshold. The light sources or groups of light sources can be activated automatically by a control unit which is powered by a voltage source such as a battery.

[0012] Advantageously, the light intensity of the activated light source or the activated group of light sources is controlled by the control unit generally inversely proportional to the intensity of the ambient light.

[0013] Advantageously, the lighting device is equipped with a speed sensor so that the light source or light source group of optical system A is activated only when the speed of the bicycle in use exceeds a determined speed threshold. The light source or light source group of optical system B can be activated as soon as the ambient light intensity falls below a determined light threshold, independently of the speed of the bicycle.

[0014] Advantageously, the lighting device may also be equipped with at least one orientation or inclination detector in order to select and adjust the light intensity of at least some of the light sources or some groups of light sources of the first light source device and / or the second light source device. The lighting of the selected light sources or groups of light sources (which may be combined with a set of lenses) allows the resulting light beam originating from each light source device to be oriented in a direction depending on the corner on the road or path. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The objects, advantages and features of a portable active lighting device or such a device mounted on a bicycle with at least two wheels will appear more clearly in the following description, which is given on the basis of at least one non-limiting embodiment illustrated by way of the accompanying drawings, in which:

[0016] Figure 1 shows a simplified block diagram of components of an active lighting device according to the present invention;

[0017] Figure 2 A bicycle is schematically shown on a road or path with activated light sources of two optical systems A and B of an active lighting device according to the invention, wherein the determined light intensity and the speed are taken into account in order to select and adjust the light intensity of at least some light sources or some groups of light sources of the optical system A; and

[0018] Figure 3a , 3b 3c schematically show a bicycle turning on a road or path in order to select and adjust the light intensity of at least some light sources or some groups of light sources of the optical systems A and B of the active lighting device according to the invention. DETAILED DESCRIPTION

[0019] In the following description, a portable active lighting device or the device mounted on a bicycle having at least two wheels is discussed. All electronic components known to a person skilled in the art are described in simplified form only.

[0020] Figure 1 The different components of a portable active lighting device 1 or of such a device mounted on a bicycle with at least two wheels are shown in a simplified manner. The lighting device 1 essentially comprises two optical systems, denoted A and B. The first optical system A comprises at least one first light source device 6, while the second optical system B comprises at least one second light source device 7. The first light source device 6 is provided for long-range lighting, preferably with variable intensity. The second light source device 7 is provided for short-range lighting, preferably with variable intensity.

[0021] Each light source device 6, 7 may comprise a light emitting diode or a group of light emitting diodes that can be selected by the control unit 2 or can be activated simultaneously. Each light source device 6, 7 may comprise at least two light sources. Preferably, each light source device 6, 7 may be provided with at least three light sources, each of which is capable of generating a conical light beam with a different illumination direction or axis. The orientation of the light beam is provided directly at the output end of each light source or through one or more lenses. In this way, if the intermediate light beam provided by each activated light source device 6, 7 must be directed, the control unit 2 can select some light sources. This allows the intermediate light beam to be directed according to the turns made by the bicycle user.

[0022] It should also be noted that each light source device 6, 7 may comprise an array of light sources, such as an array of light emitting diodes or LEDs, which may be selected independently of one another or in groups of light emitting diodes. The array may for example comprise x 2 light emitting diodes, wherein x is an integer greater than or equal to 2. For example, each light source device 6, 7 may be provided with 64 light emitting diodes.

[0023] In general, in addition to the light source means 6, 7, each optical system A and B comprises a lens combined with the light source and a reflector means (not shown) for providing a light beam with a defined orientation. Figure 1 In the scenario shown, the light sources of the devices 6, 7 are controlled by a control unit 2 connected to a continuous power supply Vdd. This power supply is preferably a DC voltage source originating from a rechargeable or primary battery, or a power source extracted and rectified from received electromagnetic radiation.

[0024] The lighting device 1 also comprises one or more sensors 3, 4a, 4b, 5a, 5b, 5c connected to a control unit 2 so as to allow activation of each light source device 6, 7 according to the measured parameters. Preferably, the control unit 2, powered by a DC voltage source Vdd, is arranged so that it automatically controls the illumination of the light sources of the first and second light source devices 6, 7 of the first and second optical systems A, B as soon as the bicycle is put into use.

[0025] The control unit 2 may also include a low frequency oscillator, which may be a MEMS or a watch quartz oscillator, and at least one volatile or non-volatile memory. Thus, the control unit 2 may be a microcontroller. The volatile or non-volatile memory, not shown, is used to store measurements performed by one or more sensors, and at least one calculation algorithm for managing and calculating the measurements performed by the sensors 3, 4a, 4b, 5a, 5b, 5c.

[0026] The lighting device 1 essentially comprises a light intensity sensor or light sensor 3, which can be formed by a solar cell or a network of solar cells. Depending on a brightness threshold detected by the light intensity sensor 3, the control unit 2 activates at least some of the light sources or groups of light sources of the first optical system A and the second optical system B. This occurs in the case where the ambient light intensity is below a determined light threshold. The light intensity threshold can directly depend on the ambient light surrounding the bicycle in use. Furthermore, the light intensity of the activated light source or activated groups of light sources can be variable and is generally inversely proportional to the change in the ambient light intensity.

[0027] It should be noted that during use of the bicycle, some light sources or groups of light sources of the second device 7 of the second optical system B are always activated as soon as the ambient light intensity drops below a determined light intensity threshold. However, some light sources or groups of light sources of the first device 6 of the first optical system A are activated only when the ambient light intensity is insufficient and in combination with additional conditions as described below.

[0028] It goes without saying that a manual switch can also be provided to deactivate all light sources of the lighting device when the bicycle is no longer in use. The light sources can also be deactivated after a period of not using the bicycle, i.e. after a determined duration of inactivity, for example after 5 minutes.

[0029] In a first alternative embodiment of the device 1, the lighting device 1 comprises at least one speed sensor 4a, 4b connected to the control unit 2. When the bicycle is in use, the speed sensor 4a, 4b determines the speed of the bicycle and activates at least some of the light sources or groups of light sources of the first means 6 of the first optical system A as soon as a determined speed threshold is exceeded. Furthermore, some of the light sources or groups of light sources of the first means 6 of the first optical system A generate light if the ambient light intensity detected by the light sensor 3 is below a determined light threshold. As described above, selected light sources of the second light source arrangement 7 are activated independently of the calculated speed of the bicycle, i.e. as long as the ambient light intensity detected by the light sensor 3 is below a determined light threshold.

[0030] As mentioned above, the manual switch allows the lighting device to deactivate all light sources when the bicycle is no longer in use. It is also possible to deactivate these light sources after a determined duration of no movement, for example after 5 minutes.

[0031] The speed sensor can be a GPS receiver or equivalent 4a, or preferably a magnetic sensor 4b for detecting the passage of at least one permanent magnet positioned on the spoke or rim of one of the bicycle wheels. Each magnetic pulse generated by the passage of a permanent magnet in the vicinity of the magnetic sensor 4b and dependent on the time rate generated by the low frequency oscillator allows the control unit 2 to calculate the speed and the time when a determined speed threshold is exceeded.

[0032] The lighting device 1 may also comprise or receive a calendar 3' of dates and times (ephemeris dates and times) of the locations / places of use of the device for each month of the year in which the ambient light was considered insufficient. The control unit 2 may store this calendar 3' of the determined locations of use of the device in a memory in order to control the activation of the selected light sources of the optical systems A, B if, for example, a determined speed threshold is also exceeded. Such a determined speed threshold may be set to 15 km / h or 25 km / h, but may also be set to another value and stored in a memory.

[0033] Depending on the location, the activation threshold can also be changed depending on whether the bike is on an open plain or in a narrow valley where ambient light disappears more quickly.

[0034] For this purpose, a first intensity adjustment unit 12 is provided, which comprises a set of first regulators 10 connected to the supply voltage source Vdd. Each of these first regulators 10 is also connected to a corresponding first switch 8, which itself is connected to the first light source device 6. Each first switch 8 is controlled by the control unit 2 to activate at least some of the light sources of the first light source device 6 at least in case of insufficient ambient light intensity. A second intensity adjustment unit 13 is provided and comprises a set of second regulators 11 connected to the supply voltage source Vdd. Each of these second regulators 11 is also connected to a corresponding second switch 9, which itself is connected to the second light source device 7. Each second switch 9 is controlled by the control unit 2 to activate at least some of the light sources of the second light source device 7 at least in case of insufficient ambient light intensity.

[0035] The first and second switches 8, 9 of each intensity adjustment unit 12, 13 are preferably MOS transistors, such as PMOS transistors as shown; however, NMOS transistors are also conceivable. The source of each first PMOS transistor 8 is connected to each corresponding first regulator 10, and the source of each second PMOS transistor 9 is connected to each corresponding second regulator 11. The gate of each first PMOS transistor 8 is connected to the control unit in order to make it conductive or non-conductive. The gate of the second PMOS transistor 9 is connected to the control unit 2 in order to make it conductive or non-conductive.

[0036] It should be noted that each regulator 10, 11 can be a current source, which envisions that the current flowing in each light source or group of light sources is variable and increases when the ambient light intensity drops below a determined light threshold. The current variation of each regulator is directly controlled by the control unit 2. The current source can also be an AC source.

[0037] It should be noted that the current in a regulator 10, 11 can be different from the current in another regulator 10, 11 according to the instructions from the control unit 2. This allows the light intensity of a light source or a group of light sources to be modified relative to another light source or another group of light sources. This ultimately allows the intermediate light beam generated at the output of the optical systems A and B to be directed according to the choice of light source or group of light sources constituted by each light source device 6, 7.

[0038] In a second alternative embodiment of the device 1, the lighting device 1 comprises at least one orientation or inclination detector 5a, 5b, 5c connected to the control unit 2. When the bicycle is in use, the orientation or inclination detector 5a, 5b, 5c determines, for example, the curve that the bicycle in use is traveling on a path or road. The orientation or inclination detector 5a, 5b, 5c provides an orientation or inclination signal to the control unit 2 in order to select and adjust the light intensity of at least some of the light sources or some groups of light sources of the first light source device 6 and / or the second light source device 7. The orientation of each light beam is different for the selected light source or the selected group of light sources, both directly at the output end of the light source or the group of light sources or by combining with a set of lenses. Thus, depending on the turn made, the middle light beam of the selected light source or the selected group of light sources points to the right for a right turn or to the left for a left turn.

[0039] Therefore, no motor assembly is required to direct the beam of the selected light source to allow the intermediate beam generated by each light source device 6, 7 to be directed according to the turn or turn the bicycle is to make.

[0040] In this second alternative embodiment, two light source devices 6, 7 can be envisaged, which are activated as soon as the ambient light intensity drops below a determined light threshold. However, another possibility involves activating only some light sources or groups of light sources of the second light source device 7 if the speed detected by the speed sensors 4a, 4b does not exceed a determined speed threshold.

[0041] The orientation or tilt detector may be provided by Figures 3a to 3c The potentiometer 5a and / or the magnetometer 5b and / or the inclinometer 5c and / or the accelerometer 5c and / or the gyroscope 5c are formed.

[0042] Figure 2 A bicycle 100 is schematically shown on a road 50 or path with at least some activated light sources of two light source devices of two optical systems A and B of an active lighting device 1. If the speed of the bicycle exceeds a determined speed threshold and the ambient light intensity is insufficient, both light source devices are activated. If this is not the case, only the second light source device of the optical system B is activated. Thus, the light intensity I of the selected light sources of the optical system A is LUM (v,I AMB) depends on the speed v of the bicycle 100 (which may be a bicycle) and the ambient light intensity I AMB The light intensity I of the selected light source of the optical system B LUM (I AMB ) depends only on the ambient light intensity I AMB .

[0043] like Figure 2 As shown, it can also be imagined that the greater the speed of the bicycle, the more the light intensity of the intermediate light beam generated by the first light source device of the optical system A increases. In addition, some light sources of the optical system A can be selected to direct the intermediate light beam of the first light source device so as to illuminate further away at a vertical azimuth tending to 0°. The light intensity of the light source can generally vary inversely proportional to the ambient light intensity, or even in steps.

[0044] Figure 3a , 3b 3c schematically show a bicycle 100 on a road 50 or path making a turn in order to orient the intermediate light beams generated by the selected light sources of the optical systems A and B of the active lighting device 1. The respective optical systems A, B may be mounted, for example, on the handlebars of the bicycle 100. The one or more orientation or inclination detectors are, for example, a magnetometer 5b or an inclinometer 5c or an accelerometer 5c or a gyroscope 5c or a potentiometer 5a or a combination of the above detectors.

[0045] The orientation or inclination detector may be mounted on a support such as a helmet of the user E of the bicycle 100 and may provide an orientation signal via two-way wireless communication to a control unit located on the handlebars of the bicycle 100. This allows the orientation of the intermediate light beams generated by the selected light sources of the optical systems A and B to be controlled by the head movements of the user E of the bicycle 100.

[0046] exist Figure 3a In , the two light source devices of the optical systems A and B of the lighting device 1 are activated. The intermediate light beam generated by the selected light sources must be directed at an angle β, which depends on the turn made on the road 50.

[0047] exist Figure 3b In the example shown in FIG. 1 , the control unit takes into account the rotation angle γ of the front wheel D of the bicycle and the angular movement ε of the head of the bicycle user E relative to the direction of the rear wheel F.

[0048] exist Figure 3c In the embodiment, the light source may also be directed taking into account the inclination of the bicycle and the user E relative to the road 50 at an angle δ.

[0049] From the description provided above, several alternative embodiments of the portable active lighting device or the device mounted on a bicycle are possible while still being within the scope of the invention as defined by the appended claims.

Claims

1. A portable active lighting device (1) or such a device on a bicycle (100), It is characterized in that The device comprises: - at least one power supply (Vdd), - a first optical system (A) having a first light source device (6) for long-distance illumination and controlled by a control unit (2) connected to the power supply (Vdd), and each light source or light source group of the first light source device (6) is used to generate a light beam with a different orientation direction at the output end of the first light source device (6), - a second optical system (B) having a second light source device (7) for short-range illumination and controlled by a control unit (2) connected to the power supply (Vdd), and each light source or light source group of the second light source device (7) is used to generate a light beam with a different orientation direction at the output end of the second light source device (7), - a light sensor (3) for determining the light intensity at a location of the bicycle (100) having the lighting device (1) and for providing a measurement signal to the control unit (2), the control unit being arranged to automatically activate at least the second optical system (B) if the ambient light intensity falls below a determined light threshold and to adjust the light intensity of some light sources or some groups of light sources of the first optical system (A) and / or the second optical system (B) in the case of activation, and - a speed sensor (4a, 4b) for determining the speed of the bicycle (100) being used on a path or road (50) and for providing a measurement signal to the control unit (2) in order to activate the first light source device (6) of the first optical system (A) according to at least one determined speed threshold.

2. A portable active lighting device (1) or such a device on a bicycle (100), It is characterized in that The device comprises: - at least one power supply (Vdd), - a first optical system (A) having a first light source device (6) for long-distance illumination and controlled by a control unit (2) connected to the power supply (Vdd), and each light source or light source group of the first light source device (6) is used to generate a light beam with a different orientation direction at the output end of the first light source device (6), - a second optical system (B) having a second light source device (7) for short-range illumination and controlled by a control unit (2) connected to the power supply (Vdd), and each light source or light source group of the second light source device (7) is used to generate a light beam with a different orientation direction at the output end of the second light source device (7), - a light sensor (3) for determining the light intensity at a location of the bicycle (100) having the lighting device (1) and for providing a measurement signal to the control unit (2), the control unit being arranged to automatically activate at least the second optical system (B) if the ambient light intensity falls below a determined light threshold and to adjust the light intensity of some light sources or some groups of light sources of the first optical system (A) and / or the second optical system (B) in the case of activation, and - an orientation or inclination detector (5a, 5b, 5c) for providing an orientation or inclination signal to the control unit (2) in order to select and adjust the light intensity of at least some light sources or some groups of light sources of the first light source device (6) and / or the second light source device (7).

3. The device (1) according to claim 1, characterized in that The control unit (2) is configured to automatically control the illumination of the light sources of the first and second optical systems (A, B) as long as the bicycle (100) is put into use.

4. The device (1) according to claim 2, characterized in that The control unit (2) is configured to automatically control the illumination of the light sources of the first and second optical systems (A, B) as long as the bicycle (100) is put into use.

5. The device (1) according to claim 1, characterized in that The device comprises an orientation or inclination detector (5a, 5b, 5c) for providing an orientation or inclination signal to the control unit (2) so as to select and adjust the light intensity of at least some light sources or some light source groups of the first light source device (6) and / or the second light source device (7).

6. The device (1) according to claim 2, characterized in that The device comprises a speed sensor (4a, 4b) for determining the speed of a bicycle (100) in use on a path or road (50) and for providing a measurement signal to the control unit (2) in order to activate the first light source device (6) of the first optical system (A) according to at least one determined speed threshold.

7. The device (1) according to claim 1, characterized in that The first and second light source devices (6, 7) each comprise a light emitting diode array, the light emitting diode array being arranged to generate or group-generate light beams with different irradiation directions at the output ends of the first and second light source devices (6, 7), respectively, and the light emitting diodes of the first light source device (6) are used for long-distance lighting, while the light emitting diodes of the second light source device (7) are used for short-distance lighting.

8. The device (1) according to claim 2, characterized in that The first and second light source devices (6, 7) each comprise a light emitting diode array, the light emitting diode array being arranged to generate or group-generate light beams with different irradiation directions at the output ends of the first and second light source devices (6, 7), respectively, and the light emitting diodes of the first light source device (6) are used for long-distance lighting, while the light emitting diodes of the second light source device (7) are used for short-distance lighting.

9. The device (1) according to claim 1, characterized in that The control unit (2) is configured so that it gradually adjusts the light intensity of the light source of the first light source device (6) of the first optical system (A) and / or the second light source device (7) of the second optical system (B) relative to the light intensity detected by the light sensor (3).

10. The device (1) according to claim 2, characterized in that The control unit (2) is configured so that it gradually adjusts the light intensity of the light source of the first light source device (6) of the first optical system (A) and / or the second light source device (7) of the second optical system (B) relative to the light intensity detected by the light sensor (3).

11. The device (1) according to claim 1, characterized in that The control unit (2) is configured to gradually adjust the light intensity of the light source of the first light source device (6) of the first optical system (A) and / or the second light source device (7) of the second optical system (B) relative to the light intensity detected by the light sensor (3).

12. The device (1) according to claim 2, characterized in that The control unit (2) is configured to gradually adjust the light intensity of the light source of the first light source device (6) of the first optical system (A) and / or the second light source device (7) of the second optical system (B) relative to the light intensity detected by the light sensor (3).

13. The device (1) according to claim 1, characterized in that The control unit (2) is a microcontroller having a memory in which the date and time of the location of the lighting device (1) are stored so as to allow the light sources of the first light source device (6) of the first optical system (A) and the second light source device (7) of the second optical system (B) to operate from a given time of day on a given date.

14. The device (1) according to claim 2, characterized in that The control unit (2) is a microcontroller having a memory in which the date and time of the location of the lighting device (1) are stored so as to allow the light sources of the first light source device (6) of the first optical system (A) and the second light source device (7) of the second optical system (B) to operate from a given time of day on a given date.

15. The device (1) according to claim 7, characterized in that The control unit (2) is a microcontroller having a memory in which a program is stored for selecting and adjusting the intensity of the light emitting diodes of the first and second light source devices (6, 7) so as to provide intermediate light of a variable distance depending on the light intensity detected by the light sensor (3).

16. The device (1) according to claim 8, characterized in that The control unit (2) is a microcontroller having a memory in which a program is stored for selecting and adjusting the intensity of the light emitting diodes of the first and second light source devices (6, 7) so as to provide intermediate light of a variable distance depending on the light intensity detected by the light sensor (3).

17. The device (1) according to claim 2, characterized in that The orientation or inclination detector (5a, 5b, 5c) is formed by a magnetometer (5b) and / or an inclinometer (5c) and / or an accelerometer (5c) and / or a gyroscope (5c) and / or a potentiometer (5a).

18. The device (1) according to claim 5, characterized in that The orientation or inclination detector (5a, 5b, 5c) is formed by a magnetometer (5b) and / or an inclinometer (5c) and / or an accelerometer (5c) and / or a gyroscope (5c) and / or a potentiometer (5a).

19. The device (1) according to claim 1, characterized in that The speed sensor (4a, 4b) is formed by a GPS receiver or equivalent (4a) or a magnetic sensor (4b) which is mounted on the wheel fork of the bicycle (100) to detect the passage of a permanent magnet mounted on the spokes or on the rim of the wheel, thereby determining the speed of the bicycle (100).

20. The device (1) according to claim 6, characterized in that The speed sensor (4a, 4b) is formed by a GPS receiver or equivalent (4a) or a magnetic sensor (4b) which is mounted on the wheel fork of the bicycle (100) to detect the passage of a permanent magnet mounted on the spokes or on the rim of the wheel, thereby determining the speed of the bicycle (100).

21. The device (1) according to claim 2, characterized in that The orientation or inclination detector (5a, 5b, 5c) is arranged to be mounted on a support, such as a helmet of a bicycle user, and provides an orientation or inclination signal to a control unit (2) arranged on the bicycle with first and second optical systems (A, B) through two-way wireless communication, so as to orient the light sources of the first and second light source devices (6, 7) through the head movement of the bicycle user (E).

22. The device (1) according to claim 5, characterized in that The orientation or inclination detector (5a, 5b, 5c) is arranged to be mounted on a support, such as a helmet of a bicycle user, and provides an orientation or inclination signal to a control unit (2) arranged on the bicycle with first and second optical systems (A, B) through two-way wireless communication, so as to orient the light sources of the first and second light source devices (6, 7) through the head movement of the bicycle user (E).

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