GB2502333A - Speed-responsive light control mechanism - Google Patents

Speed-responsive light control mechanism Download PDF

Info

Publication number
GB2502333A
GB2502333A GB1209169.0A GB201209169A GB2502333A GB 2502333 A GB2502333 A GB 2502333A GB 201209169 A GB201209169 A GB 201209169A GB 2502333 A GB2502333 A GB 2502333A
Authority
GB
United Kingdom
Prior art keywords
light
control mechanism
speed
intelligent control
light system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1209169.0A
Other versions
GB201209169D0 (en
Inventor
Marco Miglionico
Marc James Crowley
George Scolaro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FULL BEAM Ltd
Original Assignee
FULL BEAM Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FULL BEAM Ltd filed Critical FULL BEAM Ltd
Priority to GB1209169.0A priority Critical patent/GB2502333A/en
Publication of GB201209169D0 publication Critical patent/GB201209169D0/en
Publication of GB2502333A publication Critical patent/GB2502333A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
    • B62J45/20—Cycle computers as cycle accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/14—Supplying electric power to auxiliary equipment of vehicles to electric lighting circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/02—Headlights
    • B62J6/028—Headlights specially adapted for rider-propelled cycles with or without additional source of power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/05—Special features for controlling or switching of the light beam
    • B60Q2300/054—Variable non-standard intensity, i.e. emission of various beam intensities different from standard intensities, e.g. continuous or stepped transitions of intensity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/10—Indexing codes relating to particular vehicle conditions
    • B60Q2300/11—Linear movements of the vehicle
    • B60Q2300/112—Vehicle speed
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/17—Operational modes, e.g. switching from manual to automatic mode or prohibiting specific operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A light controller 1 forming part of a lighting system for a mobile platform, such as a bicycle or other vehicle, monitors an input from a speed sensor 2 of the platform and determines the required output power to be distributed to the light 3 in response thereto. The light controller may perform additional conditioning of the output power e.g. to accommodate the response time of the human eye or temporary reductions in speed, so as to optimise the usability of the system. The light controller may also monitor a user input 4 to allow for a manual override control and may monitor inputs from a suspension sensor 6 to increase output light levels on rough terrain.

Description

Background
This invention relates to an intelligent control mechanism for lights.
When a light is used for illumination purposes on a mobile platform, vehicle or person, the amount of light output (luminance) required varies with the speed of the mobile platform. This results in the user either Continuously, manually adjusting the light output of the light as the speed changes or Constantly operating the light at a light output level appropriate to their top speed, consuming more power and thus reducing the run-time of the light.
Statement of Invention
To overcome this, the present invention proposes an intelligent control mechanism for the light utilising a speed sensor. The light control mechanism shall monitor the platform's speed and adjust the light output accordingly Preferably the Light Control mechanism will always ensure there is a minimum level of light, even when the platform is static.
Preferably the Light Control mechanism will be configurable such that the speed at which maximum power is reached can be set by the user.
Preferably the Light Control mechanism will be configurable such that the relationship between the platform's speed and the Light's Power can be set by the user.
Preferably the light control mechanism will incorporate features to accommodate the human eyes' response time i.e. gradual decrease in light output.
Preferably the light control mechanism will incorporate features to accommodate temporary reductions in speed i.e. delayed decrease in light output.
Preferably the light control mechanism will be reconfigurable by the user to tune the system's behaviour to suit the user.
Preferably the Light Control mechanism will have an ability to allow user-override to enter into a manual mode of operation.
Preferably the Light Control mechanism will have an option to monitor the suspension movement to enable increased light levels on rough terrain.
The application of the light control mechanism shall not be limited to the examples used to describe it in this document. In this document the example will be that of a bicycle (pedal or electric) where the light system is used for illumination.
Advantages The automatic control of the light will have four primary benefits: 1. The automatic control of the light will negate the need for the user to manually adjust the light output of the light. This will enable the user to concentrate on that task that the light is being used to illuminate.
2. The automatic control of the light output will ensure that excessive power is not consumed at lower speeds thus maximising the system's mn-time.
a. A secondary benefit of Light System weight reduction is possible through this efficient use of the power source, enabling a lower capacity (lighter weight) power source to be utilised.
3. The duty-cycle of the Light System will be minimised thus extending its operational life.
4. A Light System utilising this Light Control mechanism can be configured to have an approximate run-time measured in distance, as opposed to time. This allows users to plan routes without having to have accurate knowledge of the duration of the journey and it enables users to fully utilise the power capacity of their Light System.
Introduction To The Drawings
Examples of the invention will now be described by referring to the accompanying Figures: Figure 1 -Illustrates the requirements for different light outputs at different speeds Figure 2-Shows the Light Controller as part of a light system Figure 3 -Shows the Light Controller as part of a Bicycle Light System Figure 4 -Charts a linear relationship between the input speed and Target Drive Level Figure 5 -Charts an x''2 relationship between the input speed and Target Drive Level Figure 6 -Charts the behaviour of the Light Controller with regard to the Ramp Down Rate Figure 7 -Charts the behaviour of the Light Controller with regard to the Ramp Down Delay Figure 8 -Charts the behaviour of the Light Controller with regard to both the Ramp Down Rate and Ramp Down Delay Figure 9 -Charts the behaviour of the Light System with regard to the Minimum Drive Level Figure 10 -Charts the behaviour of the Light System with regard to the Maximum Drive Level Figure 11 -Charts the behaviour of the light with regard to the Saturation Speed.
Detail Description
A Light System is fitted to a vehicle or user for the purpose of illuminating their way. The user requires to see the ground and objects a distance ahead of him equivalent to approximately a fixed period of time ahead of him i.e. as speed increases so the distance visibly illuminated ahead must also increase to allow the rider sufficient time to react to terrain. Figure I illustrates this. At a slow speed (xl) the rider looks a short distance ahead (yl), which only requires a small amount of power from the Light System to illuminate that distance (zi). As the speed of the user/vehicle increases, the distance at which the user looks ahead increases (y2) thus requiring an increasing amount of power (z2) to sufficiently illuminate to the increasing distance.
From this point forward we shall refer to this as the Target Power Level. The variable Target Power Level is being used as there are more considerations to the required Light Output than just speed.
The following text and figures will explain this.
The Light Controller shall be part of a lighting system comprising the following functional components: (1) Light Controller -The subject of this patent.
(2) Speed Sensor -Typically a reed switch with wheel mounted magnet but could easily utilise other inputs such as GPS.
(3) Light -Typically an LED or LED Array.
(4) User Input -To enable the user to configure the behaviour ofthe Light Controller and override automation if preferred.
(5) Power Source -Typically a Battery.
(6) Suspension Sensor -To enable the Light Controller to adjust light levels dependent on terrain.
Figure 2 illustrates the component parts of the Light System.
The Light System maybe a single unit or distributed across 2 or more modules to make up Light System.
In this document the example will be that of a bicycle (pedal or electric) where the light system is used for illumination. Figure 3 Illustrates the Light Controller as part of a Light System on a bicycle.
The working and tested prototype of the Light Controller has been implemented as illustrated in Figure 3.
Figure 3 shows a bicycle fitted with the Light System. Figure 3 Detail A shows a Light Unit comprising a Light (3), Battery (5), the Light Controller (1), input from the user via a push button switch (5) and speed input via a pulse interval input (I/P). Figure 3 Detail B shows a Speed Sensor comprising a fork-mounted Reed Switch (RS) and a Wheel-Mounted Magnet (WM) -as the wheel rotates the Wheel Magnet closes the Reed Switch, the faster the wheel rotates the shorter the time interval between the switching actions.
Figure 3 Item (6) is a Sensor that is setup to monitor suspension travel. The Light Controller will monitor the input from this Suspension Sensor and if certain criteria are met will increase the Target Power Level. The Suspension Sensor may be fitted to front, or if available, rear suspension. It is expected that it would more advantageous to be mounted to the front suspension since the terrain will affect this before the rear and therefore enable quicker reaction by the Light Controller.
The Light Controller shall monitor the Speed and maintain a Target Power proportional to the speed as defined in either Figure 4 or Figurc 5. Figure 4 and Figure 5 illustrate two of the many possibilities of relating the Input Speed to generate a Target Power Level. Figure 4 shows a linear relationship.
Behaviour of the Light Controller with regard to Speeds resulting in 100% Power or less than Mm Power will be explained later in this document.
Figure 5 shows an x2 relationship and has been selected as a likely option because the area the light must illuminate increase as per this relationship. Therefore in order maintain the increased area at the same luminance the luminosity of the Light System must follow this same relationship.
The Target Power Level may have some, none or all of the following processing done to it before the Light Controller outputs the Power Level to drive the Light Source.
The Light Controller shall be configured such that the Light System will always produce a minimum amount of light no matter the Speed. Figure 6 Charts the behaviour of the Light System with regard to the Minimum Drive Level. (a) illustrates the state where the Speed would result in a Target Power of less than the Minimum Drive Level. The Light Controller maintains the Target Power Level at the Minimum Drive Level during these periods.
A Maximum Drive Level will be set for a Light System. Figure 7 Charts the behaviour of the Light System with regard to the Maximum Drive Level. If the Speed exceeds that required to demand 100% Power from the Light System the Light Controller shall maintain the Target Power to the Maximum Drive Level (100% Power).
The Saturation Speed is the speed where the input speed results in the Target Power Level equalling the Maximum Drive Level. The Saturation Speed is anticipated to be a user configurable variable.
Figure 8 Charts the behaviour of the light with regard to the Saturation Speed. The maximum Target Power Level is always equal to the Maximum Drive Level (100% Power) however the Speed required to create a demand for the Maximum Drive Level is different. When configured for a slow Saturation Speed (5) the Light Controller will scale the Target Power as per line (a). If, however it is configured for a medium (M) or fast (F) Saturation Speed the Light Controller will respond according to lines (b) or (c) respectively.
A Ramp Down Rate is intended to counteract two potential issues; 1. The limited ability of the Human Eyes to respond to quickly reducing light levels. 2. The limited responsiveness of typical Speed Sensors. Ramp Down Rate is anticipated to be a user configurable variable. Figure 9 Charts the behaviour of the Light Controller with regard to the Ramp Down Rate. With this functionality turned off (0) the Target Power Level will reduce at the same rate as the Speed Input. Whilst this is efficient it may highlight the issues above. With the Ramp Down Rate enabled, different rates arc envisaged, the sharp decrease in input speed results in a steady reduction in the Target Power Level.
Ramp Down Rate is only effective when enabled and the Target Power is above that required by the in Speed. Ramp Down Rate only starts once Delay to Ramp Down has completed.
A Delay to Ramp Down is intended to counteract temporary reductions in speed avoiding an oscillating Target Power Level. Delay to Ramp Down is anticipated to be a user configurable variable. Figure 10 Charts the behaviour of the Light Controller with regard to the Delay to Ramp Down. With this functionality turned off(0) the Target Power Level will reduce immediately with the Speed Input. Whilst this behaviour is efficient it may produce undesirable effects when frequent, temporary speed reductions are encountered. With the Delay to Ramp Down enabled, different delays are envisaged, the temporary reduction in speed is masked and the Target Power Level remains constant.
Delay to Ramp Down is only effective when enabled and a reduction in Speed is detected.
The benefit of the Ramp Down Rate and Delay to Ramp Down processes are better illustrated in Figure 8 which charts the behaviour of the Light Controller with regard to both the Ramp Down Rate and Ramp Down Delay. Temporary reductions in Speed (a) arc not reflected in the Output Power due to the Delay to Ramp Down not being exceeded. (b) The Delay to Ramp Down is exceeded and the Output Power is allowed to reduce (c) in accordance with the Ramp Down Rate, not immediately.
Figure 12 is a photograph of a working prototype Light Controller. The prototype was subsequently built into a Light System and was successfully subjected to both lab and field testing. The prototype is factory programmable so can be configured for use in different Light Systems and user configurable so can be tuned to the end users' liking.
The Light Controller shall also monitor the temperature of the Light System and in response to a reading above an upper limit the Light Controller shall reduce the output power distributed to the Light to prevent the system over-heating. The Upper Temperature Limit shall be configurable.
The Light Controller shall also monitor the power source of the Light System and in response to a reading below a lower limit the Light Controller shall reduce the output power distributed to the Light to extend the useable period of time from the remaining capacity. The Remaining Capacity Limit shall be configurable.

Claims (15)

  1. Claims 1. An intelligent controller for a light system utilising a speed sensor enabling a platform's speed to be monitored and the output light level to be adjusted with this in consideration.
  2. 2. An intclligcnt control mcchanism for a light systcm according to Claim 1, which always ensures there is a minimum level of light, even when the platform is static.
  3. 3. An intelligent control mechanism for a light system according to Claim 1, which is configurable such that the speed at which maximum power is reached can be configured.
  4. 4. An intelligent control mechanism for a light system according to Claim 1, which is configurable such that the nature of the relationship between the platform's speed aM the Light's Power can be configured.
  5. 5. An intelligent control mechanism for a light system according to Claim 1, which incorporates algorithms to accommodate the human eyes' rcsponsc time.
  6. 6. An intelligent control mechanism for a light system according to Claim 1, which incorporates algorithms to accommodate temporary reductions in speed.
  7. 7. An intelligent control mechanism for a light system according to Claim 5, which is configurable.
  8. 8. An intelligent control mechanism for a light system according to Claim 6, which is configurable.
  9. 9. An intelligent control mechanism for a light system according to Claim 1, with the ability to allow user-override to enter into a manual mode of operation.
  10. 10. An intelligent control mechanism for a light systcm according to Claim 1, which monitors suspension movement to increase output light lcvels on rough tcnain.
  11. 11. An intelligent control mechanism for a light system according to Claim 10, which is configurable.
  12. 12. An intclligcnt control mcchanism for a light systcm according to Claim 1, which monitors tcmpcrature to reducc output light levels when Light Systcm tcmperaturc increases.
  13. 13. An intelligent control mechanism for a light system according to Claim 12, which is configurable.
  14. 14. An intelligent control mechanism for a light system according to Claim 1, which monitors the power source to reduce power consumption when the remaining capacity is below a threshold.
  15. 15. An intelligent control mechanism for a light system according to Claim 14, which is configurable.
GB1209169.0A 2012-05-24 2012-05-24 Speed-responsive light control mechanism Withdrawn GB2502333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1209169.0A GB2502333A (en) 2012-05-24 2012-05-24 Speed-responsive light control mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1209169.0A GB2502333A (en) 2012-05-24 2012-05-24 Speed-responsive light control mechanism

Publications (2)

Publication Number Publication Date
GB201209169D0 GB201209169D0 (en) 2012-07-04
GB2502333A true GB2502333A (en) 2013-11-27

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Family Applications (1)

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GB1209169.0A Withdrawn GB2502333A (en) 2012-05-24 2012-05-24 Speed-responsive light control mechanism

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018082741A1 (en) * 2016-11-04 2018-05-11 Ledlenser GmbH & Co. KG Bicycle lamp
EP3253621A4 (en) * 2015-02-04 2018-10-24 Slaughter, Christopher Dynamic cycle light distribution system
WO2021229213A1 (en) * 2020-05-12 2021-11-18 Taur Technologies Limited Lighting system

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829828A (en) * 1971-05-28 1974-08-13 Ko An Inc Speed responsive timing circuit for vehicle light operation
EP0454649A1 (en) * 1990-04-27 1991-10-30 Ultralux Ab An arrangement in vehicle headlamps
JPH09118279A (en) * 1995-08-23 1997-05-06 Mitsuoka Denki Seisakusho:Kk Lighting system of bicycle
US5690410A (en) * 1995-10-23 1997-11-25 Lin; Tzu-Lung Light device for a bicycle
JP2000053050A (en) * 1998-08-07 2000-02-22 Miyata Ind Co Ltd Light emitting method and device for bicycle
GB2347996A (en) * 1999-02-22 2000-09-20 Koito Mfg Co Ltd Lighting device for vehicle comprising a plurality of lamps
DE10225992A1 (en) * 2002-06-12 2003-12-24 Bosch Gmbh Robert Method of controlling operating parameters of a vehicle lighting system by adjusting light intensity based on vehicle speed
US20040178737A1 (en) * 2003-03-14 2004-09-16 Hitoshi Takeda Vehicular lamp
EP1679227A1 (en) * 2005-01-06 2006-07-12 Yugen Kaisha Jiro Collection A turn signal indicator lamp system, a brake light system and a headlight system for a car
JP2007045253A (en) * 2005-08-08 2007-02-22 Ichikoh Ind Ltd Lighting system of vehicle
DE102005048186A1 (en) * 2005-10-07 2007-04-12 Volkswagen Ag Vehicle light e.g. head light, controlling device, has evaluation unit provided for collecting information about vehicle speed, where evaluation unit provides control signals to control unit based on collected vehicle speed
JP2009126475A (en) * 2007-11-28 2009-06-11 Sanyo Electric Co Ltd Lighting device for bicycle
US20090225559A1 (en) * 2008-03-10 2009-09-10 The Hong Kong Polytechnic University method and system for automatically controlling power supply to a lamp of a vehicle
EP2189359A1 (en) * 2008-11-21 2010-05-26 Yi-Lun Chen Bicycle control device
TW201028323A (en) * 2009-01-23 2010-08-01 jun-chuan Liu Bicycle lamp control structure
EP2272741A2 (en) * 2009-07-07 2011-01-12 Bion Inc. Control circuit for regulating brightness of lighting device responsive to moving speed of bike

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829828A (en) * 1971-05-28 1974-08-13 Ko An Inc Speed responsive timing circuit for vehicle light operation
EP0454649A1 (en) * 1990-04-27 1991-10-30 Ultralux Ab An arrangement in vehicle headlamps
JPH09118279A (en) * 1995-08-23 1997-05-06 Mitsuoka Denki Seisakusho:Kk Lighting system of bicycle
US5690410A (en) * 1995-10-23 1997-11-25 Lin; Tzu-Lung Light device for a bicycle
JP2000053050A (en) * 1998-08-07 2000-02-22 Miyata Ind Co Ltd Light emitting method and device for bicycle
GB2347996A (en) * 1999-02-22 2000-09-20 Koito Mfg Co Ltd Lighting device for vehicle comprising a plurality of lamps
DE10225992A1 (en) * 2002-06-12 2003-12-24 Bosch Gmbh Robert Method of controlling operating parameters of a vehicle lighting system by adjusting light intensity based on vehicle speed
US20040178737A1 (en) * 2003-03-14 2004-09-16 Hitoshi Takeda Vehicular lamp
EP1679227A1 (en) * 2005-01-06 2006-07-12 Yugen Kaisha Jiro Collection A turn signal indicator lamp system, a brake light system and a headlight system for a car
JP2007045253A (en) * 2005-08-08 2007-02-22 Ichikoh Ind Ltd Lighting system of vehicle
DE102005048186A1 (en) * 2005-10-07 2007-04-12 Volkswagen Ag Vehicle light e.g. head light, controlling device, has evaluation unit provided for collecting information about vehicle speed, where evaluation unit provides control signals to control unit based on collected vehicle speed
JP2009126475A (en) * 2007-11-28 2009-06-11 Sanyo Electric Co Ltd Lighting device for bicycle
US20090225559A1 (en) * 2008-03-10 2009-09-10 The Hong Kong Polytechnic University method and system for automatically controlling power supply to a lamp of a vehicle
EP2189359A1 (en) * 2008-11-21 2010-05-26 Yi-Lun Chen Bicycle control device
TW201028323A (en) * 2009-01-23 2010-08-01 jun-chuan Liu Bicycle lamp control structure
EP2272741A2 (en) * 2009-07-07 2011-01-12 Bion Inc. Control circuit for regulating brightness of lighting device responsive to moving speed of bike

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3253621A4 (en) * 2015-02-04 2018-10-24 Slaughter, Christopher Dynamic cycle light distribution system
WO2018082741A1 (en) * 2016-11-04 2018-05-11 Ledlenser GmbH & Co. KG Bicycle lamp
WO2021229213A1 (en) * 2020-05-12 2021-11-18 Taur Technologies Limited Lighting system

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