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Title:
BICYCLE LIGHT
Document Type and Number:
WIPO Patent Application WO/2016/115606
Kind Code:
A1
Abstract:
The present disclosure relates to a bicycle light. Certain embodiments of the present disclosure provide a bicycle light comprising a first light source for projecting light in a forward or a backward direction when mounted on a bicycle, and a second light source for projecting light in a downward direction when mounted on the bicycle.

Inventors:
BURNS DESMOND (AU)
Application Number:
AU2016/050034
Publication Date:
July 28, 2016
Filing Date:
January 22, 2016
Export Citation:
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Assignee:
DESIGN BRAINS PTY LTD (AU)
International Classes:
B62J6/00; F21L4/02; F21L4/08
Domestic Patent References:
WO2013186685A12013-12-19
Foreign References:
GB2511077B2015-06-24
US5921669A1999-07-13
US8770808B12014-07-08
Attorney, Agent or Firm:
PHILLIPS ORMONDE FITZPATRICK (333 Collins StreetMelbourne, Victoria 3000, AU)
Download PDF:
Claims:
CLAIMS

1. A bicycle light comprising:

a first light source for projecting light in a forward or a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

2. The bicycle light according to claim 1, wherein the first light source comprises two or more separate sources of light.

3. The bicycle light according to claims 1 or 2, wherein the bicycle light comprises a lens optic positioned over the first light source and/or the second light source.

4. The bicycle light according to any one of claims 1 to 3, wherein the bicycle light comprises a transparent cover for the first light source and/or a transparent cover for the second light source.

5. The bicycle light according to any one of claims 1 to 5, wherein the first light source comprises one or more light emitting diodes.

6. The bicycle light according to claim 5, wherein the bicycle light comprises a first circuit board comprising the one or more light emitting diodes mounted to the circuit board is positioned substantially perpendicularly to the direction of light projected forward by the first light source.

7. The bicycle light according to any of claims 1 to 6, wherein the first light source provides a spot beam and/or a wide beam.

8. The bicycle light according to any one of claims 1 to 7, wherein the second light source comprises one or more light emitting diodes.

9. The bicycle light according to claim 8, wherein the bicycle light comprises a second circuit board comprising the one or more light emitting diodes and the circuit board is positioned substantially perpendicularly to the direction of light projected downward by the second light source.

10. The bicycle light according to any one of claims 1 to 9, wherein the second light source projects light downward in a rectangular photometric flood beam pattern.

11. The bicycle light according to any one of claims 1 to 10, wherein the bicycle light comprises a battery.

12. The bicycle light according to claim 11, wherein the battery comprises a rechargeable battery.

13. The bicycle light according to claim 12, wherein the bicycle light comprises a micro USB charging port for recharging the battery.

14. The bicycle light according to any one of claims 1 to 13, wherein the bicycle light comprises a housing for the first light source and second light source.

15. The bicycle light according to claim 14, wherein the bicycle light comprises an external switch on the housing for providing power from a battery to the first light source and the second light source.

17. The bicycle light according to claim 16, wherein the external switch is located at the rear of the housing.

18. The bicycle light according to any one of claims 1 to 17, wherein the bicycle light is a front bicycle light and the first light source projects light in a forward direction.

19. The bicycle light according to any one of claims 1 to 17, wherein the bicycle light is a rear bicycle light and the first light source projects light in a backward direction.

20. The bicycle light according to claim 19, wherein the first light source and/or the second light source comprise one or more red light emitting diodes.

21. The bicycle light according to claim 19 or 20, wherein the first light source and/or second light source comprise one or more red lens optics positioned over the first light source and/or the second light source.

22. The bicycle light according to any one of claims 1 to 21, wherein the bicycle light comprises a means for mounting the bicycle light on a bicycle.

23. The bicycle light according to claim 18, wherein the means for mounting the bicycle light on a bicycle comprises a clamp holster.

24. A front bicycle light comprising:

a first light source for projecting light in a forward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

25. A rear bicycle light comprising:

a first light source for projecting light in a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

26. A bicycle light comprising:

a means for mounting the bicycle light on a bicycle;

a first light source for projecting light in a forward or a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

27. A bicycle comprising a bicycle light according to any one of claims 1 to 26 mounted to the bicycle.

28. A combination product comprising:

a bicycle; and

a bicycle light according to any one of claims 1 to 26.

29. A method of improving visibility of a bicycle rider to other users, the method comprising using a bicycle light according to any one of claims 1 to 26.

Description:
BICYCLE LIGHT

PRIORITY CLAIM

[001] This application claims priority to Australian provisional patent application number 2015900180 filed on 22 January 2015, the contents of which are hereby incorporated by reference.

FIELD

[002] The present invention relates to a bicycle light that combines a forward or rear light source with a downward light source.

BACKGROUND

[003] The two most frequent causes for the 51,700 reported bicycle accidents in Australia in 2008 were collisions with motor vehicles (55%) and individual falls (25%). Research indicates that lack of visibility is an important factor in such accidents, with almost three quarters of all night time bicycle accidents being due to inadequate side view visibility.

[004] To improve safety and visibility bicycle riders will often use bicycle lights. Bicycle lights contribute to rider safety in various ways, including lighting a forward path and improving cyclist visibility to motorist and pedestrians. In particular, lighting allows riders to navigate at night by illuminating their path.

[005] The majority of bicycle lights are positioned on the bicycle handlebars, or sometimes on the actual bike frame, and provide light forward onto the ground in front of the bicycle. These bicycle lights, however, project forward light only to a particular spot on the ground or directly in front of the rider, and do not provide acceptable lighting or sighting of the rider because they only illuminate a limited spot in front of the rider. Additional sidelight indicators have been included on some bicycle lights, but the lumen light output is low and they only assist with partially improving visibility to other road users. [006] Accordingly, there is a need for improved bicycle lighting products. SUMMARY

[007] The present invention relates to a bicycle light that combines a forward or backward light source with a downward light source.

[008] The present invention is based, at least in part, on the recognition that a bicycle light comprising a first light source capable of projecting light forward or backwards from the bicycle and a second light source capable of projecting light downward provides a number of advantages. For example, the secondary light source provides projection illumination of the ground directly below the bike and around the bike, and also provides both forward side and back in addition to front/rear of bicycle illumination. As such, the bicycle light not only enhances the visibility of the rider but also provides the rider with ground illumination around the bicycle, enhancing safety to avoid potholes and other road surface conditions whilst encouraging motorists to give a wider berth while driving past the rider.

[009] In addition, two light sources disposed in such a way work together and reduce the glare effect often witnessed when only a single forward facing light source is used for a bicycle light. A motorist approaching sees two light sources, one forward or rear facing, and one ground illuminating that illuminates both the ground and the rider. The motorist can therefore better determine the bicycle's position, speed and direction from the bicycle light with the two light source combination.

[0010] Certain embodiments of the present disclosure provide a bicycle light comprising:

a first light source for projecting light in a forward or a backward direction when mounted on a bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle. [0011] Certain embodiments of the present disclosure provide a front bicycle light comprising:

a first light source for projecting light in a forward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

Certain embodiments of the present disclosure provide a rear bicycle light comprising: a first light source for projecting light in a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

[0012] Certain embodiments of the present invention provide a bicycle light comprising:

a means for mounting the bicycle light on the bicycle;

a first light source for projecting light in a forward or a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

[0013] Other embodiments are disclosed herein. BRIEF DESCRIPTION OF THE FIGURES

[0014] Certain embodiments are illustrated by the following figures. It is to be understood that the following description is for the purpose of describing particular embodiments only and is not intended to be limiting with respect to the description.

[0015] Figure 1 shows a rear perspective view showing a bicycle light according to one embodiment.

[0016] Figure 2 shows a front perspective view showing a bicycle light according to one embodiment. [0017] Figure 3 shows an exploded perspective view showing components of a bicycle light according to one embodiment.

[0018] Figure 4 shows an underside view of a bicycle light according to one embodiment.

[0019] Figure 5 shows a side view in section as seen along plane 50-50 in Figure 4, showing components of the assembled bicycle light according to one embodiment.

[0020] Figure 6 shows a stylised side view of a bicycle according to one embodiment, with the bicycle light attached to the handlebars of the bicycle and associated beam patterns.

[0021] Figure 7 shows a stylised top elevation view of a bicycle, with a bicycle light according to one embodiment attached to the handlebars of the bicycle and the associated beam pattern.

[0022] Figure 8 shows a rear perspective view showing a bicycle light according to one embodiment in which the bicycle light does not use a clamp holder.

[0023] Figure 9 shows a front perspective view showing a bicycle light according to another embodiment in which the bicycle light does not use a clamp holder and the secondary light source is located near the front of the light.

[0024] Figure 10 shows an exploded perspective view showing components of a bicycle light according to another embodiment in which the bicycle which the bicycle light does not use a clamp holder and the secondary light source is located near the front of the light.

[0025] Figure 11 shows an underside view of a bicycle light according to one embodiment.

[0026] Figure 12 shows a side view in section as seen along plane 50-50 in Figure 11, showing components of the assembled bicycle light according to one embodiment. [0027] Figure 13 shows a stylised side view of a bicycle according to one embodiment, with the bicycle light attached to the handlebars of the bicycle and associated beam patterns.

[0028] Figure 14 shows a stylised side view of a bicycle according to one embodiment, with the bicycle light attached to the seat post of the bicycle and associated beam patterns.

DETAILED DESCRIPTION

[0029] The present invention relates to a bicycle light comprising a forward or a backward light source and a downward light source.

[0030] Certain embodiments of the present disclosure provide a bicycle light comprising:

a first light source for projecting light in a forward or a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

[0031] The term "forward" as used herein refers to the direction of light projected from the bicycle light from a first light source and is to be understood to light projected in front of the bicycle when mounted to a bicycle. In a similar fashion, the term "backward" as used herein refers to the direction of light projected from the bicycle light from the first light source and is to be understood to refer to light projected behind the bicycle when mounted to a bicycle. The term "downward" as used herein refers to the direction of light projected from the bicycle light from a second light source and is to be understood to refer to light projected towards the ground when mounted to a bicycle.

[0032] In certain embodiments, the first light source projects light in a direction that is substantially horizontal, when mounted to the bicycle. In certain embodiments, the first light source projects light in a direction that is offset from the horizontal plane when mounted to the bicycle. [0033] In certain embodiments, the bicycle light projects light forward, when mounted to the bicycle. For example, the bicycle may be a front bicycle light. Typically, a front bicycle light is mounted to the handlebars, handlebar post or a front mudguard of the bicycle.

[0034] In certain embodiments, the bicycle light projects light directly forward. In certain embodiments, the first light source projects light directly forward.

[0035] In certain embodiments, the bicycle light projects light in a forward direction and offset from the horizontal plane. In certain embodiments, the bicycle light projects light in a forward and downwardly offset direction. In certain embodiments, the first light source projects light in a forward and offset direction. In certain embodiments, the first light source projects light in a forward and downwardly offset direction. Methods for changing the direction of projection of light from a light source are known in the art.

[0036] In certain embodiments, the bicycle light projects light backward, when mounted to the bicycle. For example, the bicycle light may be a rear bicycle light. Typically, a rear bicycle light is mounted to the seat post, a rear carrier basket or bag or a rear mudguard of the bicycle.

[0037] In certain embodiments, the bicycle light projects light directly backward. In certain embodiments, the first light source projects light directly backward.

[0038] In certain embodiments, the bicycle light projects light in a backward direction and offset from the horizontal plane. In certain embodiments, the bicycle light projects light in a backward and downwardly offset direction. In certain embodiments, the first light source projects light in a backward and offset direction. In certain embodiments, the first light source projects light in a backward and downwardly offset direction.

[0039] In certain embodiments, the bicycle light projects light directly downward. In certain embodiments, the second light source projects light directly downward. In certain embodiments, the second light source projects light substantially perpendicularly to the first light source.

[0040] In certain embodiments, the second light source projects light offset from the vertical plane.

[0041] In certain embodiments, the second light source projects light downward and forwardly offset. For example for a front light, the second light source may project light offset from the vertical plane and forwardly offset to overlap with the beam from the first light source. In certain embodiments, the light may be offset by 0 to 20°, 0 to 10°, 0 to 5°, 20° or less, or 10° or less.

[0042] For example, the second light source may be arranged so as to project light offset forwardly, to assist with partially overlapping the beam from the first light source, such as being offset by up to 10°, or by 10° or more.

[0043] In certain embodiments, the second light source projects light downward and backwardly offset. For example for a rear light, the second light source may project light offset from the vertical plane and backward offset to overlap with the beam from the first light source. In certain embodiments, the light may be offset by 0 to 20°, 0 to 10°, 0 to 5°, 20° or less, or 10° or less.

[0044] For example, the second light source may be arranged so as to project light offset backwardly, to assist with partially overlapping the beam from the first light source, such as being offset by up to 10°, or by 10° or more.

[0045] In certain embodiments, the first light source comprises a single source of light. In certain embodiments, the first light source comprises two or more separate sources of light. Methods for using and powering light sources are known in the art.

[0046] In certain embodiments, the first light source provides a spot beam and/or a wide or dispersed beam. In certain embodiments, the first light source is adapted to be able to provide a spot beam or a wide or dispersed beam.

[0047] In certain embodiments, the second light source projects light downward in a substantially rectangular photometric flood beam pattern. Other types of beam patterns are contemplated.

[0048] In certain embodiments, the second light source projects light downward to produce a beam pattern that extends a desired distance from the bicycle.

[0049] In certain embodiments, the beam pattern and/or size is adjustable for the first light source and/or the second light source.

[0050] In certain embodiments, the second light source comprises one or more light sources. In certain embodiments, the second light source comprises a single source of light.

[0051] In certain embodiments, the first light source and/or the second light source comprise an output in the range from 100 to 1000 lumens, 100 to 800 lumens, or 100 to 500 lumens.

[0052] In certain embodiments, the first light source comprises an output in the range from 400 to 1000 lumens or 400 to 800 lumens.

[0053] In certain embodiments, the second light source comprises an output in the range from 100 to 400 lumens or 100 to 200 lumens.

[0054] In certain embodiments, the first light source and/or the second light source comprise one or more light emitting diodes (LEDs).

[0055] For example, the LEDs for use in the bicycle light typically have an output of 5 to 2000 lumens, such as in the range of 100 to 500 lumens.

[0056] In certain embodiments, the front light source uses one or more LEDs with an output of 200 to 500 lumens per LED. In certain embodiments, the front light source uses two LEDs each with an output of 400 lumens per LED.

[0057] In certain embodiments, the second light source comprises one or more LEDs with an output in the range from 100 to 400 lumens per LED. In certain embodiments, the second light source comprises a single LED with an output of 150 lumens.

[0058] In certain embodiments, the first light source comprises two light emitting diodes. In certain embodiments, the second light source comprises a single light emitting diode.

[0059] Other types of light sources are contemplated, including incandescent light sources.

[0060] In certain embodiments, the first and/or second light sources produce light continuously or in a flashing mode. In certain embodiments, the lights are controlled to produce light in either a continuous mode or a flashing mode.

[0061] In certain embodiments, the bicycle light comprises a lens optic positioned over the first light source and/or the second light source. In certain embodiments, the use of a lens optic produces a desired beam pattern. For example, a lens optic may produce a spot beam or a wide flood beam.

[0062] For example, the use of a lens optic for the second light source collimation produces a rectangle photometric beam pattern projected onto the ground below the bicycle. The spread of the rectangle photometric beam pattern onto the ground provides the rider with improved visibility and riding safety.

[0063] In certain embodiments, the bicycle light comprises a front transparent cover for the first light source and/or a second transparent cover for the second light source. Typically, such covers may be made from a transparent plastic or glass.

[0064] In certain embodiments, the bicycle light comprises one or more circuit boards for controlling the first light source and/or the second light source. In certain embodiments, the one or more circuit boards comprise one or more LEDs. Methods for producing and using circuit boards are known in the art. In certain embodiments, the first light source and/or the second light source comprise LEDs which are controlled by one or more circuit boards.

[0065] In certain embodiments, the bicycle light comprises a first circuit board comprising one or more light emitting diodes (as the first light source) mounted to the first circuit board and the circuit board is positioned substantially perpendicularly to the direction of light projected forward by the first light source. [0066] In certain embodiments, the bicycle light comprises a second circuit board comprising one or more light emitting diodes (as the second light source) mounted to the second circuit board and the circuit board is positioned substantially perpendicularly to the direction of light projected downward by the second light source.

[0067] In certain embodiments, the light emitting diodes are mounted directly on a circuit board.

[0068] In certain embodiments, the bicycle light comprises a battery. In certain embodiments, the battery comprises a rechargeable battery.

[0069] In certain embodiments, the bicycle light comprises a USB charging port for recharging the battery. In certain embodiments, the bicycle light comprises a micro USB charging port for recharging the battery. Other types of charging methods are contemplated, including charging by way of a generator attached to the bicycle

[0070] In certain embodiments, the bicycle light comprises a housing. The housing typically contains all or most of the components of the bicycle light, aside from the means for mounting the light on a bicycle. In certain embodiments, the housing contains one or more of the first light source, the second light source and a battery. In certain embodiments, the bicycle light comprises a housing for the first light source and the second light source.

[0071] In certain embodiments, the bicycle light comprises an external switch on the housing for providing power from a battery to the first light source and the second light source, via circuit boards. In certain embodiments, the external switch is located at the rear of the housing.

[0072] In certain embodiments, the bicycle light comprises a means for mounting the bicycle light on a bicycle.

[0073] Certain embodiments of the present invention provide a bicycle light comprising:

a means for mounting the bicycle light on a bicycle;

a first light source for projecting light in a forward or a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

[0074] In certain embodiments, the means for mounting the bicycle light on a bicycle comprises a clamp holster.

[0075] In certain embodiments, the means for mounting the bicycle light on a bicycle is directly connected to the bicycle light.

[0076] In certain embodiments, the means for mounting the bicycle light comprises a means for mounting to a handlebar. In certain embodiments, the means for mounting the bicycle light comprises a means for mounting on a post or member, such as a handlebar post or a seat post. In certain embodiments, the means for mounting the bicycle light comprises a means for mounting to a mud guard. In certain embodiments, the means for mounting the bicycle light comprises a means for attaching the bicycle light to an underside of a bicycle basket. Other types of mounting arrangements are contemplated.

[0077] In certain embodiments, means for mounting is attached to the housing of the bicycle light.

[0078] In certain embodiments, the bicycle light is a front bicycle light.

[0079] Certain embodiments of the present disclosure provide a front bicycle light comprising:

a first light source for projecting light in a forward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

[0080] In certain embodiments, the bicycle light is a rear bicycle light.

[0081] In this regard, it will be appreciated that for the use of a bicycle light as described herein as a rear light on the bicycle light, the first light source projects light in a rearward/backward direction when mounted on the bicycle light. Other embodiments of the components, configuration and use of a bicycle light as a rear light are as described herein.

[0082] Certain embodiments of the present disclosure provide a rear bicycle light comprising:

a first light source for projecting light in a backward direction when mounted on the bicycle; and

a second light source for projecting light in a downward direction when mounted on the bicycle.

[0083] In certain embodiments, the first light source and/or the second light source for use in rear bicycle light comprise one or more red light emitting LEDs and/or red light optics.

[0084] Certain embodiments of the present invention provide a bicycle comprising a bicycle light as described herein mounted to the bicycle.

[0085] In certain embodiments, the bicycle light is integral with a component of the bicycle.

[0086] Certain embodiments of the present invention provide a combination product comprising a bicycle and a bicycle light as described herein.

[0087] Certain embodiments of the present invention provide a method of improving visibility of a bicycle rider to other users, the method comprising using a bicycle light as described herein.

DESCRIPTION OF SPECIFIC EMBOD EVENTS

[0088] Figure 1 shows a front bicycle light 10 according to one embodiment, with a main housing 12 having a front bezel 13, and a rear end cap 14 with a push button type momentary switch 25 at the rear, for ease of access by the bike rider. The momentary switch 25 is a main switch, which will turn on both the primary forward light source and the secondary downward light source together, with additional pushes of the switch providing different light levels and/or flash modes, and switch off the light by holding down the momentary switch 25 for a longer period.

[0089] The rear end cap 14 has a charging port 26, which can be a micro USB port, protected by removable ingress cover (not shown). Secured in the rear end cap 14 is a rear transparent lens cover 22 for use with the downward light source. The components may be bade from a suitable plastic and/or metal.

[0090] Figure 2 shows a bicycle light 10 according to one embodiment, with a light clamp holster 23, for mounting to the bicycle, secured to the main housing 12 by clip-in features that are integral with the main housing body 12 and the rear end cap 14. The holster clamp 23 has a handlebar-engaging clamp 24 that clamps to the handlebar surface with a clamp screw fastener. Other forms of connection to the bicycle can be used. Secured into the front bezel 13 is a pair of front transparent lenses 21. The front bezel 13 is secured to the main housing 12 with internal screws and aligned by a lip groove seating face on the main housing 12. The front lenses 21 clip into place within the front bezel 13.

[0091] Referring to Figure 3, there is shown a partially exploded view of a bicycle light assembly 10 according to one embodiment.

[0092] The bicycle light 10 has a light clamp holster 23, for mounting to the bicycle, secured to the main housing 12 by clip-in features that are integral with the main housing body 12 and the rear end cap 14. The holster clamp 23 has a handlebar- engaging clamp 24 that clamps to the handlebar surface with a clamp screw fastener. Secured into the front bezel 13 is a pair of front transparent lenses 21. The front bezel 13 is secured to the main housing 12 with internal screws and aligned by a lip groove seating face on the main housing 12. The front lenses 21 clip into place within the front bezel 13.

[0093] The bicycle light 10 has a front LED circuit board 15 supporting two LEDs 30. The front LED diodes are driven to 1 Amp which results in a raw lumen output of 400 lumens for each diode. The front LED circuit board is made from metal to aide heat dissipation from the LED diodes, and a secondary heat sink secured to the rear of front LED circuit board (not visible). In this embodiment, the bicycle light has two forward facing lens optics 17 centrally mounted to each of the LEDs 30 to produce the primary forward light source or illumination beam pattern. The front lens optics 17 produce either a forward spot beam or forward wide flood beam depending on lens optic geometry.

[0094] A rear LED circuit board 16 supporting one LED 31 is located substantially perpendicularly to the front LED circuit board 15, thereby producing a light source that is perpendicular to the direction of light projection from the front of the bicycle light from the first light source. The rear LED diode is driven to 0.7 Amp which results in a raw lumen output of 200 lumens.

[0095] The rear lens optic 18 is parallel to the rear LED circuit board 16. The rear transparent window 22 is positioned centrally to the rear lens optic 18 to allow the light source from the rear LED circuit board 16 to project outwards with even symmetry from the lens optic 18, thereby projecting light downward in a rectangle photometric flood beam pattern. The rear transparent window 22 is secured to the rear end cap 14 centrally to the lens optic 18 by adhesive or ultrasonic plastic welding.

[0096] Figure 3 also shows the main circuit board 19 with some of the LED driver electronics 32 and a battery connector 33, the main circuit board 19 mounted essentially parallel to the front LED circuit board 15 secured in the rear end cap 14.

[0097] The software programme on the main circuit board microprocessor controls the forward and rear current to adjust the lumen output. The software programme can also control/produce the front LEDs to flash on and off to any desired effect.

[0098] Figure 4 shows an underside elevation view of the bicycle light 10 according to one embodiment, showing section lines 50-50.

[0099] Figure 5 shows the bicycle light 10 in a side cross section as seen between the section lines 50-50 in Figure 4, midline of one of the optics 17 for a front LED 30 and the midline of the rear lens optic 18. The main housing 12 contains a rechargeable battery pack 20, chargeable via a charging port 26. The battery pack 20 has a connector lead that connects to the main circuit board 19. The battery pack is supported by internal ribs 40 and 41 within the main housing 12 to improve airflow around the battery 20.

[00100] Figure 5 also shows the front LED circuit board 15, which secured to a metal heat sink 43. The heat sink 43 is in heat conducting contact with the front bezel 13 and the main housing 12. The front lens optic 17 is secured to the front LED circuit board 15 by adhesive. The front transparent lens 21 is concentric to the front lens optic 17 and secured to the front lens bezel 13 by adhesive or ultrasonic plastic welding.

[00101] Figure 5 also shows the position of the rear LED circuit board 16, with downward LED 31, and the mounting angle within the bicycle light assembly at approximately 90 degrees to the front LED circuit board 15 at the front of the bicycle light. The rear end cap 14 houses a variety of the components.

[00102] Figure 6 shows a side view of a bicycle 45 mounted with a bicycle light 10 according to one embodiment. The bicycle light 10 projects a first light source in front of the bicycle, thereby projecting a primary forward facing photometric beam pattern 47. The bicycle light 10 also projects a second light source in a downward direction, thereby providing a secondary downward facing photometric beam pattern 49 onto the ground. In addition to illuminating the ground beneath the rider, the downward facing photometric flood beam pattern 49 also provides the rider with high side view visibility to other road users at night.

[00103] Figure 7 shows a top view of a bicycle 45 mounted with bicycle light 10 according to one embodiment. The bicycle light 10 projects a primary forward facing photometric beam pattern 47 and a secondary downward facing photometric flood beam pattern 49 onto the ground in a rectangular shape. The secondary downward facing beam pattern 49 provides flood light directly in front, back and to the sides of the bicycle, thereby providing rider high visibility from other road users. The downward facing photometric beam pattern 49 also provides the rider with high visibility of the terrain the bicycle is riding over, enabling the rider to see and avoid potholes or other debris whilst riding at night.

[00104] Figure 8 shows a front bicycle light 10 according to one embodiment, in which the bicycle light 10 does not employ a light clamp holster and the downward light source is located nearer the front of the bicycle light.

[00105] The light 10 has a main housing 12 attached to a front bezel 13. which is made from aluminium to improve heat dissipation from the LEDs and transfer heat out into ambient air. The rear end of the main housing 12 has a push button type momentary switch 25 at the rear, for ease of access by the bike rider. The rear end of the main house 12 has a charging port 26, which can be a micro USB port, protected by removable ingress cover (not shown).

[00106] Located in the front bezel 13 is a transparent lens cover 22 for use with a downward light source. In this arrangement, the second light source is located closer to the front of the light.

[00107] Figure 9 shows a bicycle light 10 according to one embodiment in which handlebar-engaging clamp 24 is directly attached to the main housing 12. The handlebar engaging clamp 24 has a notched tongue 27 that fits around the handlebar and permits adjustment of the clamp. Located in the front bezel 13 is a pair of front transparent lenses 21.

[00108] Referring to Figure 10, there is shown a partially exploded view of a bicycle light assembly 10 according to one embodiment.

[00109] The bicycle light 10 has a handlebar engaging clamp 24 which attaches to the housing 12. The clamp 24 has a notched tongue 27. Secured into the front bezel 13 is a pair of front transparent lenses 21. The front bezel 13 is secured to the main housing 12 with internal screws and aligned by a lip groove seating face on the main housing 12. The front lenses 21 clip into place within the front bezel 13.

[00110] The bicycle light 10 has a front LED circuit board 15 supporting two LEDs 30 which are held in place by holders 29. In this embodiment, the bicycle light has two forward facing lens optics 17 centrally mounted to each of the LEDs 30 to produce the primary forward light source or illumination beam pattern. The front lens optic 17 produces either a forward spot beam or forward wide flood beam depending on lens optic geometry.

[00111] A LED circuit board 16 supporting one LED (not visible) is located perpendicularly to the front LED circuit board 15 and is tilted upwards so as to project light downwards and slightly forward.

[00112] The transparent window 22 is positioned centrally to the rear lens optic 18 to allow the light source from the rear led circuit board 16 to project outwards with even symmetry from the lens optic 18, thereby projecting light downward in a rectangle photometric flood beam pattern. A down optic shroud 28 controls the width of the downward beam. It sits over the downward opticl8 and shrouds the amount of sideways light coming from the collimating downward optic.

[00113] Figure 10 also shows the main circuit board 19 mounted parallel to the front LED circuit board 15. The main housing 12 also contains a rechargeable battery pack 20 which is connected to main circuit board 19.

[00114] Figure 11 shows an underside elevation view of the bicycle light 10 according to one embodiment, showing section lines 50-50.

[00115] Figure 12 shows the bicycle light 10 in a side cross section as seen between the section lines 50-50 in Figure 10, midline of one of the optics 17 for a front LED 30 and the midline of the downward lens optic 18.

[00116] The main housing 12 contains a rechargeable battery pack 20. The battery pack is supported by internal ribs 40 and 41 within the main housing 12 to improve airflow around the battery 20.

[00117] The front lens optic 17 is secured to the front LED circuit board 15 by adhesive. The front transparent lens 21 is concentric to the front lens optic 17 and secured to the front lens bezel 13 by adhesive or ultrasonic plastic welding.

[00118] Figure 12 also shows the position of the circuit board 16, with downward LED 31, and mounting angle within the bicycle light assembly at approximately 80 degrees to the front LED circuit board 15 at the front of the bicycle light. A transparent cover 22 covers the lens optic 18. A main circuit board 19 contains the various electronic components.

[00119] Figure 13 shows a side view of a bicycle 45 mounted with a bicycle light 10 according to one embodiment, in which the second light source is tilted forward. The bicycle light 10 projects a first light source in front of the bicycle, thereby projecting in a forward direction a primary forward facing photometric beam pattern 47. The bicycle light 10 also projects a second light source for projecting light in a downward direction, thereby providing a secondary downward facing photometric beam pattern 49 onto the ground and which touches or overlaps the beam 47.

[00120] Figure 14 shows a side view of a bicycle 45 mounted with a rear bicycle light 10 according to one embodiment. The bicycle light 10 is mounted to the seat post of the bicycle 45. The bicycle light 10 projects a first light source behind the bicycle, thereby projecting in a backward direction a primary backward facing photometric beam pattern 51. The bicycle light 10 also has a second light source projecting light in a downward direction, thereby providing a secondary downward facing photometric beam pattern 53 onto the ground.

[00121] Although the present invention has been described with reference to particular examples, it will be appreciated by those skilled in the art that the disclosure may be embodied in many other forms.

[00122] As used herein, the singular forms "a," "an," and "the" may refer to plural articles unless specifically stated otherwise.

[00123] Throughout this specification, unless the context requires otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or integer or group of elements or integers but not the exclusion of any other element or integer or group of elements or integers.

[00124] The description provided herein is in relation to embodiments which may share common characteristics and features. It is to be understood that one or more features of one embodiment may be combinable with one or more features of the other embodiments. In addition, a single feature or combination of features of the embodiments may constitute additional embodiments.

[00125] Future patent applications may be filed on the basis of the present application, for example by claiming priority from the present application, by claiming a divisional status and/or by claiming a continuation status. It is to be understood that the following claims are provided by way of example only, and are not intended to limit the scope of what may be claimed in any such future application. Nor should the claims be considered to limit the understanding of (or exclude other understandings of) the present disclosure. Features may be added to or omitted from the example claims at a later date.