JPH0454069Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bicycle headlamp, and particularly to one having a side reflection function.

[Conventional technology]

Conventionally, bicycle headlamps have been constructed in such a way that the lamp socket supporting the lamp is directly press-fitted into the central opening of the reflector, as seen in Japanese Utility Model Publication No. 56-27601 (F21M 3/12). There were almost everything.

On the other hand, in recent years, the light from the lamp is not only emitted forward, but also exposed from the side of the head case, which not only increases the commercial value of the headlamp through the so-called lateral reflection function, but also increases its ability to attract attention. High,
Some are designed to improve driving safety.

For example, in the above publication, a step is formed on the side of the front cover of the case to form a reflective surface toward the front, and an auxiliary cover with a side reflective surface is welded by ultrasonic bonding or the like. and gain lateral reflex function.

[The problem that the idea aims to solve]

However, in conventional headlamps, the lamp socket is attached by press-fitting into the reflector, which tends to deform the reflector during press-fitting, and the lamp attached to the socket tends to shift from the focal point of the reflector.
This requires focus adjustment work, and has the disadvantage of poor assembly workability.

Here, it is conceivable to provide a socket holder for holding the lamp socket separately from the reflector and fix it inside the head case, but in this case, it is not only necessary to accurately position the holder inside the head case. It is necessary to support and fix the holder to the head case at multiple locations, resulting in very poor assembly workability.

On the other hand, when trying to form a side reflection function as in the above publication, an auxiliary cover having a side reflection surface is particularly required, which increases the number of parts and requires a special bonding process when assembling it. It has the disadvantage that it takes time to assemble and is expensive.

The present invention has been developed with these problems of the prior art in mind, and its purpose is to provide a bicycle front panel with a lateral reflective function that has a small number of parts and is easy to assemble. It is intended to provide illumination.

[Means to solve the problem]

Next, the structure of the present invention for achieving the above object will be explained using FIG. 1 which corresponds to an embodiment.

The bicycle headlamp according to the present invention has a head case 1 which is open at the front and has an exposure hole 2 at the side.
, a central socket holding part 6 made of a light guiding material, a light guiding part 7 extending laterally from the holding part 6,
A side reflecting surface 8 formed on the end surface of the light guide section 7 and fitted into the exposure hole 2; and a fixing piece 10 extending from the holding section 6 to the other side and fastened to the side wall of the head case 1. a lamp socket 21 fixed to the holding part 6; a lamp 22 attached to the socket 21; a reflector 26 that reflects the light of the lamp 22 forward; and an opening 27 for guiding a part of the light from the lamp 22 to the light guide section 7.

[Effect]

When assembling, head case 1
The socket holder 5 is inserted into the holder 5, and the side reflection surface 8 of the light guiding portion 7 of the holder 5 is fitted into the exposure hole 2, and the fixing piece 10 of the holder 5 is fastened to the side wall of the head case 1.

Furthermore, after the lamp socket 21 is fixed to the holding part 6 of the holder 5, the lamp 22 is attached thereto, and the reflector plate 26 is attached to the head case 1.

Therefore, the light from the lamp 22 is irradiated forward directly and reflected by the reflector 26, providing a forward illumination function, while a part of the light from the lamp 22 is emitted through the opening 27 of the reflector 26. The light is then guided to the light guide 7, passes through the light guide 7, reaches the end face, and is irradiated to the side of the head case 1 from the side reflection surface 8.
Provides lateral reflex function.

Here, the light guiding socket holder 5 supporting the lamp socket 21 is positioned by fitting the side reflective surface 8 of the end face of the light guiding part 7 into the exposure hole 2, so the fixing piece 10 of the holder 5 is It is securely fixed simply by tightening it to the head case 1, and the socket holding part 6
The lamp socket 21 is also positioned with high precision.

Moreover, since this holder 5 serves as a light guiding means for side reflection, there is no need to separately provide an auxiliary cover or the like having a side reflection surface.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes a head case made of iron or aluminum that is open at the front, and has an approximately triangular exposure hole 2 on the left side wall, a mounting hole 3 on the right side wall, and a cutout hole 4 on the bottom wall from the front side. are formed respectively, and an auxiliary hole for holder positioning (not shown) is formed immediately after the notch hole 4.

Reference numeral 5 denotes a socket holder which is internally housed in the case 1 and is integrally molded with transparent or translucent light-guiding resin. A light guiding portion 7 extending to the left, a side reflecting surface 8 formed in a substantially triangular shape on the end face of the light guiding portion 7 and fitting into the exposure hole 2, and a side reflecting surface 8 extending to the right from the holding portion 6. Mounting hole 3
A fixing piece 10 having a mounting hole 9 matching the above, a front cover mounting part 12 extending downward from the holding part 6 and having a screw hole 11 on the front surface, and an auxiliary positioning convex part 13 located immediately after the mounting part 12. An opening 15 for guiding the lead plate 14 is formed on the right side of the holding portion 6.

To attach the holder 5 to the case 1, first fit the side reflective surface 8 into the exposure hole 2, guide the front cover attachment part 12 into the notch hole 4, and then insert the auxiliary protrusion 13
Fit into the auxiliary hole and position.

Next, as shown in FIG. 4, the mounting hole 18 of the bracket 17 supported by the dynamo generator 16,
Rivets 20 are sequentially inserted into the mounting hole 3 of the case 1, the mounting hole 9 of the fixing piece 10, and the mounting hole 19 of the base of the lead plate 14, and swaged.

As a result, the holder 5 is fixed within the case 1, the lead plate 14 is fixed to the holder 5, and the case 1 is simultaneously supported with respect to the generator 16.

Reference numeral 21 indicates a lamp socket press-fitted into the holding portion 6, and reference numeral 22 indicates a lamp mounted and connected to the socket 21, and the tail terminal of the lamp 22 is in contact with the tip of the lead plate 14.

Reference numeral 23 denotes a translucent front cover that covers the front opening of the case 1 and has a lens function.A screw 25 is inserted into a fixing part 24 formed in a bulge at the lower part of the outer periphery, and is inserted into the screw hole 11 of the front cover mounting part 12. The front lid 23 is fixed by screwing into the front lid 23.

Reference numeral 26 denotes a concave reflector that is fitted and fixed inside the front cover 23. When the front cover 23 is attached, the lamp 22 is loosely inserted into the circular opening 27 at the center of the reflector 26, and the lamp 22 is inserted into the reflector. 26 focal positions.

This opening 27 functions to expose a part of the light from the lamp 22 backward by utilizing the gap between the opening 27 and the lamp 22, and this light is guided to the light guide section 7 and passes through the light guide section 7. The light passes through the side and is irradiated from the side reflecting surface 8.

The generator 16 is supported by the body of the bicycle, and can generate electricity by bringing rollers 28 into contact with, for example, the side surface of the front tire. 29 is a fender for mudguards and the like.

In addition, in the above embodiment, the socket holder 5
If it is made of a light-guiding property that has luminous properties, a side reflection function can be obtained not only while the bicycle is running, but also for a while after the bicycle has stopped, and the ability to attract attention when waiting at a traffic light, etc. can be further enhanced.

Further, the present invention is not limited to a headlamp in which the lamp 22 is lit and driven by the power generation output as described above, but can be similarly implemented in a headlamp that uses a battery as a lamp drive source.

[Effect of idea]

As explained above, according to the bicycle headlamp of the present invention, a light guiding portion having a side reflective surface on the end face is integrally provided to the light guiding socket holder that supports the lamp socket, thereby achieving the side reflecting function. This eliminates the need to prepare a separate member for side reflection, reducing the number of parts.Furthermore, the side reflection surface of this light guide can be fitted into the exposure hole of the head case. The socket holder can be positioned, the socket holder can be easily and accurately attached only by fastening the fixing piece to the head case, the assembly work is easy and quick, and costs can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of a bicycle headlamp according to the present invention, in which FIG. 1 is a cutaway plan view, FIG. 2 is a side view,
3 is a perspective view, FIG. 4 is an exploded perspective view of essential parts, and FIG. 5 is a front view of the socket holder attached to the head case. 1...Head case, 2...Exposure hole, 5...
Socket holder, 6...Socket holding part, 7...
Light guiding part, 8... Side reflection surface, 10... Fixed piece, 2
1...Lamp socket, 22...Lamp, 26...
...Reflector, 27...Aperture.

Claims (1)

[Scope of utility model registration request] A head case with an opening on the front and an exposure hole on the side, a socket holding part in the center made of a light guiding material, a light guiding part extending laterally from the holding part,
a socket holder comprising a side reflecting surface formed on an end surface of the light guide part and fitted into the exposure hole; and a fixing piece extending from the holding part to the other side and fastened to the side wall of the head case; A lamp socket fixed to a holding part, a lamp attached to the socket, a reflection plate that reflects the light of the lamp forward, and a part of the light from the lamp provided on the reflection plate to the light guide part. A bicycle headlight equipped with an opening that guides the user.