JP3931301B2 - Bicycle headlight - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bicycle headlight, and more specifically, by improving the structure of a reflecting mirror and an irradiation lens that covers the reflecting mirror, visibility from the side and the rear as well as irradiation of the traveling front portion of the bicycle is provided. The purpose of this is to improve the safety of driving at night.
[0002]
[Prior art]
Conventionally known bicycle headlights include those using a dynamo that generates electric power by utilizing the rotational force of the wheels as the bicycle travels, and those that attach an illuminating lamp containing a dry battery to the handle. Both of these have a structure in which a concave reflecting mirror with a light bulb positioned at the centripetal position is attached to the front of the bicycle and an irradiation lens is attached to the front to amplify the amount of light emitted from the front. It is. Recently, a structure has been developed in which a part of the irradiation lens is opened in the lateral direction to ensure visibility from the lateral direction during traveling.
[0003]
[Problems to be solved by the invention]
However, although the above-mentioned bicycle headlight is excellent in irradiation ability with respect to the traveling front, a part of the irradiation lens described above is opened in the side direction so that a part of the irradiation light is dispersed in the side direction. Light emission in the side direction (crossing direction with respect to the traveling direction of the bicycle) is also insufficient, including those with the above structure, and there are many problems in terms of safety particularly during night driving.
[0004]
[Means for Solving the Problems]
Therefore, the present invention improves the structure of the above-described conventional headlight, not only irradiates the front, but also significantly enhances the light-emitting ability in the side direction, and further has a light-emitting function in the rear to improve visibility from the surroundings. By making it better, the safety during night driving is improved.
[0005]
Specifically, the invention of claim 1 comprises a concave reflecting mirror that is mounted toward the front of the vehicle and is mounted on the centripetal part, and an irradiation lens that covers the front surface of the reflecting mirror. The reflecting mirror has a side window opened in the left and right side direction at a part of its edge, and the side window further has a plurality of plate-like reflecting ribs at regular intervals to partition the side window. Are formed in the same direction toward the side surface, and the irradiation lens integrally has a transparent side lens portion covering the side window of the reflecting mirror in the mounted state, and the side lens portion includes a side window in the reflecting mirror. A plurality of transparent projecting ribs projecting outward are formed at positions corresponding to the respective intermediate positions of the plurality of plate-like reflecting ribs formed on the bicycle head. Light .
[0006]
In the invention of claim 2, the plurality of transparent projecting ribs formed integrally with the irradiation lens and projecting outward from the side surface have a certain width and the projecting ends are flat in the side surface direction. The bicycle headlight according to claim 1, which has a portion and a flat portion directed at least obliquely rearward. Further, in the invention of claim 3, the plurality of transparent projecting ribs formed integrally with the irradiation lens and projecting outward from the side surface have a certain width and the projecting ends are flat in the side surface direction. 1 or 2 in which the tangent line between the flat portion and the flat portion directed obliquely rearward forms an angle. It relates to the bicycle headlight described.
[0007]
In the above configuration, when the light bulb of the headlight is caused to emit light based on a power source from a dynamo or the like (not shown) and the power from the battery, the light is reflected by the concave reflecting mirror toward the traveling front and the side window direction, The forward light is irradiated toward the front of the vehicle through the irradiation lens, and the light reflected in the side window direction is reflected on each side plate surface of the plurality of plate-like reflection ribs formed on the side window. Further, the light is condensed on each of the transparent protruding ribs projecting outward, which are formed on the side lens portions on the irradiation lens side corresponding to the respective intermediate positions of the reflecting ribs, and these protruding ribs are side surfaces of the bicycle. Irradiate strong light emission in the direction.
[0008]
Further, in this case, a plurality of transparent projecting ribs that are integrally formed with the irradiation lens and projecting outward from the side surface have a certain width and a flat portion whose projecting end faces in the side surface direction, In the case of having at least a flat portion directed obliquely backward, a part of the strong light by the plate-like reflection rib of the reflecting mirror and the transparent protruding rib on the irradiation lens side is the oblique rear portion of the bicycle. Irradiation is also possible.
[0009]
Furthermore, in this case, a plurality of transparent protruding ribs that are formed integrally with the irradiation lens and protrude toward the outside of the side surface have a certain width and a flat portion whose protruding end faces in the side surface direction, In the case where there is at least a flat portion directed obliquely rearward, and the tangent line between the flat portion directed in the lateral direction and the flat portion directed obliquely rearward forms an angle, the edge effect of the corner portion Further, the light collecting function is exhibited, and light emission not only in the side direction of the bicycle but also in the rear is enhanced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the following, the specific contents of the present invention will be described with reference to the embodiments shown in FIGS. 1 to 3. Reference numeral 1 represents a bicycle headlight, 2 represents a reflector in the headlight 1, and 7 represents an irradiation lens. Show. The reflecting mirror 2 has a concave surface, and a light bulb mounting hole 3 is formed in the centripetal portion. The concave surface portion can be mounted toward the front of the bicycle, and the irradiation lens 7 is mounted to cover the front surface of the reflecting mirror 2. It is done.
[0011]
More specifically, as shown in FIG. 2, the reflecting mirror 2 is formed with a flange 4 at a peripheral end edge, and a side window 5 opened at a part of the end edge in the left and right side directions. Further, the side window 5 is formed with a plurality of reflection ribs 6 each having a plate shape extending in parallel with the opening direction of the side window 5 at regular intervals in the same direction. Has been. 2A is a front view, FIG. 2B is a cross-sectional view of the portion indicated by the line aa in FIG. 2A, FIG. 2C is a right side view, and FIG. Each figure is shown.
[0012]
Further, as shown in FIG. 3, the irradiation lens 7 integrally has a transparent side lens portion 8 that covers the side window 5 of the reflecting mirror 2 in the mounted state, and the side lens portion 8 includes the reflecting mirror. A plurality of transparent projecting ribs 9 projecting outward are formed at positions corresponding to respective intermediate positions of the plurality of plate-like reflecting ribs 6 formed on the side window 5 in FIG.
[0013]
Further, the protruding rib 9 has a flat portion 9a having a constant width and a protruding end directed in the side surface direction, and a flat portion 9b directed at least obliquely rearward, and further, a flat portion 9a directed in the side surface direction, A tangent line with the flat portion 9b directed obliquely rearward forms a corner portion 9c. 3A is a front view, FIG. 3B is a left side view, FIG. 3C is a bottom view, and FIG. 3D is a cross-sectional view taken along the line bb in FIG.
[0014]
In the above configuration, when the light bulb of the headlight 1 is caused to emit light based on a power source from a dynamo or the like (not shown) or a power source from the battery, the light is directed toward the traveling front and the side window 5 direction by the concave reflecting mirror 2. The light reflected and irradiated forward is irradiated toward the traveling front through the irradiation lens 7, and the light reflected in the direction of the side window 5 is formed by a plurality of plate-like reflection ribs 6 formed in the side window 5. Each of the transparent projections projecting outward is formed on the side lens portion 8 on the irradiation lens 7 side corresponding to each intermediate position of the plate-like reflection ribs 6 reflected on the respective side plate surfaces. The light is condensed on the ribs 9, and each of the protruding ribs 9 emits strong light emission toward the side of the bicycle (see FIG. 4).
[0015]
Further, in this case, the plurality of transparent projecting ribs 9 formed integrally with the irradiation lens 7 and projecting outward from the side surface have a certain width and a flat portion whose projecting end faces the side surface direction. 9a and at least the flat portion 9b directed obliquely rearward, the strong light is generated by the plate-like reflecting rib 6 on the reflecting mirror 2 side and the transparent protruding rib 9 on the irradiation lens 7 side. A part of is also irradiated toward the obliquely rear part of the bicycle.
[0016]
Further, in this case, a plurality of transparent projecting ribs 9 formed integrally with the irradiation lens 7 and projecting outward from the side surface have a certain width and a flat portion whose projecting end faces in the side surface direction. 9a and at least a flat portion 9b directed obliquely rearward, and the tangent line between the flat portion 9a directed toward the side surface and the flat portion 9b directed obliquely rearward forms an angle. Due to the edge effect by the corner portion 9c, a further light collecting function is exhibited, and light emission from the rear as well as the side of the bicycle is enhanced.
[0017]
【The invention's effect】
As described above, in the headlight for a bicycle according to the present invention, a concave reflecting mirror that is mounted toward the front of traveling and is mounted on a centripetal portion and to which a light bulb is mounted, and an irradiation lens that covers the front surface of the reflecting mirror The reflecting mirror has a side window opened in a part of its edge toward the left and right side surfaces, and the side window has a plurality of plate shapes at regular intervals that partition the side window. Similarly, the reflecting rib is formed in the side surface direction, and the irradiation lens integrally includes a transparent side lens portion that covers the side window of the reflecting mirror in the mounted state, and the side lens portion includes the transparent lens in the reflecting mirror. In order to form a plurality of transparent protruding ribs projecting outward at positions corresponding to the respective intermediate positions of the plurality of plate-like reflecting ribs formed on the side window, In front It not irradiated only, it is possible to significantly increase the emission capacity for lateral, can significantly enhance the safety of when night driving of the bicycle.
[0018]
Further, the plurality of transparent protruding ribs that are formed integrally with the irradiation lens and protrude outwardly from the side surface have a certain width and a flat portion whose protruding end faces in the side surface direction, at least obliquely rearward. In the case of having a flat part directed to the rear side, the light emitting function for the rear side can be further enhanced, and further, the above-described transparent protruding rib is directed to the flat part directed in the side surface direction and obliquely rearward. In the case where the tangent line with the flat part forms a corner part, the light collecting property of the part is further increased by the edge effect, and as a result, the visibility from the periphery of the bicycle is optimized. Thus, high safety during night driving can be ensured.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic configuration of a bicycle headlight according to an embodiment of the present invention.
FIG. 2 is a detailed configuration diagram of a reflector used in the headlight of FIG.
3 is a detailed configuration diagram of an irradiation lens used in the headlight of FIG. 1. FIG.
FIG. 4 is a schematic explanatory view showing a light collecting principle by a reflecting rib of a reflecting mirror and a transparent protruding rib of an irradiation lens.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Headlight 2 Reflector 3 Bulb mounting hole 4 Flange 5 Side window 6 Plate-shaped reflection rib 7 Irradiation lens 8 Side lens part 9 Transparent protrusion rib 9a Flat part 9b toward the side direction Flat part toward diagonally backward 9c corner

Claims (3)

It consists of a concave reflecting mirror, which is mounted toward the front of the vehicle, where the bulb is mounted at the centripetal part, and an irradiation lens that covers the front surface of the reflecting mirror. The side window has a side window opened toward the left and right side direction, and the side window is further formed with a plurality of plate-like reflection ribs at regular intervals to partition the side window, and the irradiation lens Is integrally formed with a transparent side lens part covering the side window of the reflecting mirror in the mounted state, and the side lens part has a plurality of plate-like reflecting ribs formed on the side window of the reflecting mirror, A bicycle headlight comprising a plurality of transparent projecting ribs projecting outward at positions corresponding to the respective intermediate positions. The plurality of transparent protruding ribs that are formed integrally with the irradiation lens and protrude outwardly from the side surface have a certain width and a flat portion whose protruding end faces in the side surface direction, and at least obliquely rearward The bicycle headlight according to claim 1, further comprising a flat portion. The plurality of transparent protruding ribs that are formed integrally with the irradiation lens and protrude outwardly from the side surface have a certain width and a flat portion whose protruding end faces in the side surface direction, and at least obliquely rearward The bicycle headlight according to claim 1 or 2, wherein a tangent line between the flat portion directed in the lateral direction and the flat portion directed obliquely rearward forms an angle.

Images