JP2002362451A - Headlight for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the visibility of the position of a bicycle for car drivers and or pedestrians. SOLUTION: A headlight comprises a translucent head case 3, a reflecting plate 10 provided in this head case 3 and having a bulb 11 as a light emitting body substantially in a center, and a translucent head cap 4 for covering an opening of the head case 3 facing this reflecting plate 10. A cut part 13 is formed in the reflecting plate 10, a reflecting part 14 for reflecting the light of the bulb 11 backward is provided between the reflecting plate 10 and the head case 3, and the light reflected by this reflecting part 14 is passed through a plurality of holes 13 and allowed to leak to the head case 3. The head case looks bright by the light reflected by the reflecting part over a backward extensive range, and the visibility of the position of the bicycle for the car drivers and pedestrians, etc., can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle headlight.

[0002]

2. Description of the Related Art A conventional bicycle headlight is disclosed in Japanese Unexamined Patent Publication No.
As shown in JP-A-33151 (B62J6 / 02),
In the head case, a reflector provided with a light bulb in the center is provided, and the opening of the head case is covered with a translucent head cap facing this reflector, and a side eye is provided in the head case. Are known.

[0003] In this bicycle headlight, a hole is formed in a reflector that reflects the light of the bulb forward, and the light of the bulb is leaked to the side eye through the hole to emit the side eye.
The side eyes emit light in this way, so that the driver or the pedestrian of the car can recognize the position of the bicycle, thereby improving safety.

[0004] However, since only a narrow area of the side eye shines in the head case, it is difficult for a driver or a pedestrian of an automobile to visually recognize the position of the bicycle, and it has been desired to improve visibility.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bicycle headlamp which can improve the visibility of the position of the bicycle to a driver or a pedestrian of an automobile.

[0006]

A first means for solving the above-mentioned problems is a head case having a light-transmitting property, and a reflector provided in the head case and having a light-emitting body disposed substantially at the center. A light-transmissive head cap that covers the opening of the head case in opposition to the reflection plate; a window is formed in the reflection plate; and the light-emitting body is disposed between the reflection plate and the head case. And a reflection portion for reflecting the light to the rear side, and the light reflected by the reflection portion is leaked to the head case through the window portion.

As a result, the head case can be seen shining over a wide area extending from the side to the rear, so that the driver or the pedestrian of the automobile can easily recognize the position of the bicycle and the safety can be improved.

[0008] In the above structure, the reflection portion is formed in a ring shape, and the window portion is formed at a plurality of locations facing the reflection portion.

[0009] With this, the light reflected rearward by the reflecting portion leaks to the head case through each of the plurality of windows, and the head case looks brighter and brighter over a wider area. Pedestrians and the like can easily recognize the position of the bicycle, and safety can be improved.

[0010] A second means for solving the above problems is as follows.
A light-transmitting head case, a reflector provided in the head case, and a light-emitting body disposed substantially at the center, and a light-transmitting head cap opposing the reflector and covering an opening of the head case. Comprising a side eye on the side surface of the head case, forming a concave portion for passing light from a luminous body to the side eye on the reflector, between the reflector and the head case, A reflector is provided for reflecting the light of the luminous body to the rear side, and the light reflected by the reflector is leaked to the head case through a window formed in the recess.

[0011] Thereby, the light of the luminous body can be leaked from the side through the side eye, and the light of the luminous body reflected rearward by the reflecting portion can be leaked to the head case through the window formed in the concave portion. Since the head case can be seen shining over a wide area, a driver or a pedestrian of an automobile can more easily recognize the position of the bicycle, and safety can be improved.

In the above structure, the side eyes are provided on the left and right sides of the head case, and the reflection portions are provided on the left and right sides corresponding to the side eyes.

Thus, the light of the luminous body reflected by the right and left reflectors can be leaked to the head case, so that the head case can be seen to shine over a wide range.

The left and right reflecting portions are connected by a ring-shaped connecting portion, and the connecting portion is sandwiched between the reflecting plate and the head cap.

[0015] Thereby, the reflecting portions on both the left and right sides can be handled integrally, and the connecting portion can be easily attached by being sandwiched between the reflecting plate and the head cap.

Also, a mounting portion for mounting the head cap to the head case is formed on the head cap, and a part of the mounting portion is protruded inward to form a projection. And a locked portion formed on the connecting portion.

Thus, it is possible to mount the reflection portion by using the mounting portion to prevent the reflection portion from rotating.

[0018]

1 to 3 show an embodiment of the present invention. Hereinafter, description will be made with reference to these drawings.

Reference numeral 1 denotes a headlight mounted on a front fork of a bicycle via a bracket 2. This headlight 1 is disclosed, for example, in Japanese Unexamined Patent Publication No. 3-25867 (B60Q1 / 0).
The light is turned on using a hub dynamo or the like as shown in 2) as a power supply.

The headlamp 1 has a translucent head case 3 made of translucent polystyrene (which may be made of polycarbonate or ABS resin) having an opening on the front side, and a transparent case arranged so as to cover the opening of the head case 3. An outer shell is constituted by the simple head cap 4. A female screw portion 6 into which the screw 5 is screwed is formed in a lower portion on the opening side of the head case 3, and a mounting portion 7 is formed in the head cap 4 corresponding to the female screw portion 6. The mounting portion 7 is formed with a hole 8 into which the screw 5 is inserted, and a projection 9 is formed by projecting a part of the outer periphery of the mounting portion 7 inward.

Reference numeral 10 denotes a reflector disposed on the opening side of the head case 3. At substantially the center of the reflector 10, a socket 12 for mounting a light bulb 11 is provided. Is irradiated on the front side. This reflector 10
Are formed with a plurality of holes 13 as window portions on the outer periphery thereof.

Reference numeral 14 denotes a ring-shaped reflecting portion provided so as to face the hole 13, and a surface facing the reflecting plate 10 is formed as a mirror surface. The reflector 14 has its outer periphery in contact with the inner surface of the head cap 4 and is sandwiched and mounted between the head cap 4 and the reflector 10.
The projection 9 of the head cap 4 is provided below the reflection portion 14.
And an arcuate locked portion 15 locked to the
By locking the locked portion 15 to the projection 9, the reflection portion 14 is formed.
In the head cap 4 is prevented.

Reference numeral 16 denotes a partition plate which partitions the inside of the headlight 1 back and forth, and is attached to the head case 3 with screws 17 and 18. A power supply plate 19 for supplying electric power from the hub dynamo to the light bulb 11 is attached to the screw 17, and a lead wire (not shown) grounded to the bicycle body via the bracket 2 and a socket 12 of the light bulb 11 are mounted to the screw 18. And the lead wire 20 connected thereto.

A control board 21 is provided in the head case 3 behind the partition plate 16, and a light detection sensor (not shown) is mounted on the control board 21. This light detection sensor enables the power from the hub dynamo to be supplied to the bulb 11 when the surroundings are dark, and shuts off the supply of power to the bulb 11 when the surroundings are bright.

In the bicycle headlamp 1 having the above-described configuration, when the surroundings become dark, such as at night, power is supplied from the hub dynamo to the light bulb 11 by the light detection sensor, and the light bulb 11 is turned on. Of the light emitted from the light bulb 11 in all directions, the light irradiated on the front side and the light reflected on the reflector 10 illuminate the front side, while the light reflected on the rear side by the ring-shaped reflecting portion 14. Leaks into the head case 3 through each of the plurality of holes 13.

The light leaking into the head case 3 passes through the translucent head case, so that the head case 3 looks shining over a wide area. Thereby, the driver or the pedestrian of the automobile can easily visually recognize the position of the bicycle, and the safety can be improved.

Further, since a plurality of holes 13 are formed on the outer periphery of the reflection plate 10, almost the entire head case 3 can be seen shining, and safety can be further improved.

FIGS. 4 to 6 show a bicycle headlamp according to a second embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

The left and right ends of the opening side of the head case 3 have U
Each of the windows 31 has a character-like shape, and side eyes 32 that fit into the windows 31 are formed on both left and right sides of the end of the head cap 4.

Concave portions 33 are formed on the left and right sides of the reflection plate 10 disposed on the opening side of the head case 3 so as to correspond to the windows 31. A cutout portion 33a as a window portion is formed in the concave portion 33 so as to face the head cap 4.

Numeral 34 denotes a reflector formed so as to cover the left and right cutouts 33a. The surface facing the reflector 10 is formed as a mirror surface, and the left and right reflectors 34, 34 are connected to each other in a circular arc. It is connected at 35. The connecting portion 35 has its outer periphery in contact with the inner surface of the head cap 4 and is sandwiched and attached between the head cap 4 and the reflector 10. An arcuate locked portion 15 locked to the projection 9 is formed at a lower portion of the connecting portion 35. By locking the locked portion 15 to the projection 9, reflection is achieved. Part 34
Are prevented from rotating in the head cap 4.

The bicycle headlamp 1 having the above-described structure is similar to the first headlamp.
The light bulb 11 is turned on when the surroundings are dark, as in the embodiment. Of the light of the bulb 11 illuminated in all directions, the light illuminated to the front side and the light reflected by the reflector 10 illuminate the front, while the light passing through the concave portion 33 passes through the side eye 32 to the outside. Leak. Further, the light reflected rearward by the reflecting portion 34 passes through the cutout portion 33a, proceeds into the head case 3, and leaks from the translucent head case 3 to the outside. The leaked light makes the side surface of the head case 3 glow in a wide range from the front side to the rear side.

As described above, the head case 3 is illuminated over a wide area by the light reflected by the reflecting portion 34 in addition to the light leaking from the side eyes 32, so that the driver or the pedestrian of the automobile can use the bicycle. Can be easily visually recognized, and safety can be improved.

Further, by providing the reflecting portion opposite to the concave portion of the reflecting plate which is not reflected forward, it is possible to prevent the amount of light reflected from the reflecting plate from being reduced.

By providing the reflecting portions 34 on both the left and right sides, the left and right sides of the head case 3 can be seen shining, so that the driver or pedestrian of the automobile can easily recognize the position of the bicycle from both the left and right sides. And safety can be further improved.

The reflecting portion 34 is connected to a ring-shaped connecting portion 35.
The left and right reflectors 34 can be integrally handled by the connection. Further, since the connecting portion 35 is sandwiched between the head cap 4 and the reflecting plate 10, the connecting portion 35 can be easily attached and the assembling workability can be improved.

In the first and second embodiments, the head case 3 is made translucent so that the inside can be seen so as to have a characteristic appearance.

In this case, since light is diffusely reflected when light leaks from the head case, the head case looks brighter,
The visibility of the position of the bicycle with respect to the driver, the pedestrian, and the like of the automobile can be improved.

The head case may be formed of a transparent member or a member having a light transmitting property such as smoke.

[0040]

According to the first aspect of the present invention, the head case can be seen to shine in a wide range from the side to the back by the light reflected to the rear side by the reflecting portion, so that the driver, the pedestrian, etc. Can easily recognize the position of the bicycle and improve safety.

According to the second aspect of the present invention, the light reflected to the rear side by the reflecting portion is leaked to the head case through the plurality of windows, so that the head case can be seen as shining over a wide range. Can be.

According to the third aspect of the present invention, in addition to the light leaking through the side eye on the side surface of the head case, the light of the luminous body reflected by the reflecting portion leaks to the head case through the window formed in the concave portion. In addition, the head case can be made to look shiny over a wide range.

According to the fourth aspect of the present invention, the light of the luminous body reflected by the right and left reflecting portions is leaked to the head case so that the head case can be seen to shine over a wide range on both the left and right sides. The driver and the pedestrian of the car can more easily recognize the position of the bicycle, and the safety can be improved.

According to the fifth aspect of the present invention, the reflecting portions on both the left and right sides can be integrally handled, and the connecting portion can be easily attached by being sandwiched between the reflecting plate and the head cap.

According to the sixth aspect of the present invention, the reflection portion can be held at a predetermined position by stopping the rotation of the reflection portion using the attachment portion.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a bicycle headlight showing a first embodiment of the present invention.

FIG. 2 is a front sectional view of the bicycle headlight.

FIG. 3 is a plan sectional view of the bicycle headlight.

FIG. 4 is a plan cross-sectional view of a bicycle headlight showing a second embodiment of the present invention.

FIG. 5 is a side view of the bicycle headlight.

FIG. 6 is a front sectional view of the bicycle headlight.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 head case 4 head cap 7 attachment portion 9 protrusion 10 reflector 11 light bulb (light emitting body) 13 hole (window) 14 reflection portion 15 locked portion 32 side eye 33 concave portion 33a cutout portion (window portion) 34 reflection Part 35 Connecting part

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) F21Q 1/00 ACD

Claims (6)

[Claims] 1. A head case having a light-transmitting property, a reflector provided in the head case and having a light emitter disposed substantially at the center thereof, and covering an opening of the head case facing the reflector. A light-transmitting head cap, a window portion is formed in the reflection plate, and a reflection portion is provided between the reflection plate and the head case to reflect the light of the illuminant to the rear side. A headlight for a bicycle, wherein light reflected by the headlight is leaked to the head case through the window. 2. The bicycle headlight according to claim 1, wherein the reflector is formed in a ring shape, and the window is formed at a plurality of locations facing the reflector. 3. A head case having a light-transmitting property, a reflector provided in the head case and having a light emitter disposed substantially at the center, and an opening of the head case facing the reflector. A light-transmitting head cap, a side eye formed on a side surface of the head case, a concave portion for allowing light from a light emitter to pass through the side eye to the reflector, the reflector and the head being formed. A reflector is provided between the case and the case to reflect the light of the luminous body to the rear side, and the light reflected by the reflector is leaked to the head case through a window formed in the recess. Headlights for bicycles. 4. The bicycle headlight according to claim 3, wherein the side eyes are provided on both left and right sides of the head case, and the reflecting portions are provided on both right and left sides corresponding to the side eyes. light. 5. The device according to claim 4, wherein the left and right reflecting portions are connected by a ring-shaped connecting portion, and the connecting portion is sandwiched between a reflecting plate and a head cap. Headlight for bicycle. 6. A mounting part for mounting the head cap to a head case is formed on the head cap, and a part of the mounting part is protruded inward to form a projection. The bicycle headlight according to claim 5, wherein a locked portion formed on the connecting portion is locked.