JPS636801Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a bicycle headlamp in which a side light bulb is disposed on the side of a headlamp casing.

(b) Conventional technology Conventionally, as disclosed in Japanese Utility Model Publication No. 30-14778, an auxiliary light bulb is attached to the side of the main body case, but this auxiliary light bulb emits light forward and upward. However, the light could not be emitted backwards, nor could it illuminate the area near the feet.

(c) Problems to be solved by the invention Therefore, the purpose of the invention is to improve the directivity of the light source of the side light bulb and to widen the overall radiation range.

(d) Means for solving the problem The present invention consists of a headlight casing that houses a headlight bulb and a reflector and has a side bulb protrusion hole in the side wall, and A front parabolic reflective surface and a rear parabolic reflective surface are provided in communication with the protruding side light bulb in the front and back direction so that their focal positions coincide with each other, and the head of the side light bulb comes to the focal position. a reflector having an insertion hole through which the side light bulb is inserted; and the reflector is housed so that the optical axis of the front parabolic reflection surface of the reflector is rotated and tilted downward from the optical axis of the reflector. and a translucent side cover attached to the side wall of the housing.

(E) Function With this configuration, the light source from the side light bulbs can emit light with good directionality from front to back, and can illuminate the feet in front.

(F) Embodiment 1 is a left headlight housing consisting of a resin rear case 2 with a front opening and a colorless translucent resin front lens 3 that closes the front opening, and a headlight bulb inside. 4
and its socket 5, reflector 6, power supply lead plate 7,
It has a grounding lead plate 9 for grounding a mounting bracket 8 to the bicycle, and furthermore, a protruding hole 12 for a side light bulb 11 is bored in the left side wall 10 of the rear case 2.

Reference numeral 13 denotes a resin reflector, and this reflector 13 has a pair of front parabolic reflecting surfaces 14 and a rear radiation reflecting surface 15, which are bored in communication with each other in the front and back direction so that the respective focal positions F coincide with each other. Head 11a of part bulb 11
an insertion hole 17 into which the light bulb 11 is inserted by positioning the side light bulb 11 so that it is at this focal position F and fitting the socket 16 therein;
A side hole 18 is formed in the side surface facing the head 11a of the light bulb 11, an upper groove hole 19 is formed in the center of the upper surface, and a lower curved groove is formed in the center of the lower surface. a hole 20, a pair of lower groove holes 21 recessed in the lower surface symmetrically with respect to the curved groove hole 20,
21', and the entire surface is vacuum-deposited with aluminum to improve reflection efficiency.

22 is a recess 23 inside the side wall 10 of the rear case 2.
The left translucent side panel made of colored resin such as yellow is attached to the side wall 10 by hooking the hooking protrusion 25 on the upper edge 24 and fixing the lower edge 26 to the lower part of the side wall 10 with screws 27. The cover 22 has an optical axis A of the front parabolic reflecting surface 14.
In order to accommodate the reflector 13 so as to rotate and tilt approximately 4 degrees C downward from the optical axis B of the reflector 6, an upper portion is provided on the upper edge 24 so as to be press-fitted into the upper groove hole 19. It has a threaded tube 29 whose outer circumferential surface 29a abuts the rib 28 and the lower curved groove hole 20, and a lower rib 30 provided on the lower edge 26 so as to be press-fitted and fixed into the front and rear lower groove holes 21. A lens portion 32 is provided in a protruding manner at a portion of the surface 31 facing the side hole 18 .

Furthermore, 33 and 34 are lead plates and ground plates for the side light bulb 11 attached to the inner surface of the side wall 10.

Then, the side light bulb 11 is fitted into the insertion hole 17 of the reflector 13 via the socket 16, and the upper groove hole 19 is press-fitted into the upper rib 28, and the rear lower groove hole 21 is press-fitted into the lower rib 30. Therefore, the optical axis A of the front parabolic reflecting surface 14 is aligned with the reflecting mirror 6.
The side cover 22 is placed in the translucent side cover 22 so as to be rotated and tilted approximately 4 degrees C below the optical axis B, and then the side cover 22 is attached to the side wall 10 of the rear case 2. The tail portion of the bulb 11 is housed in the headlamp housing 1 through the protruding hole 12 of the side wall 10.

The light from the side light bulb 11 is reflected by the front parabolic reflection surface 14 and the rear parabolic reflection surface 15, and passes through the side cover 22 to become a yellow front light and a yellow rear light, which are reflected from the front and rear parabolic reflection surfaces. The lens portion 3 of the side hole 18 and the side cover 22 is radiated rearward.
2, it becomes a yellow side light and is radiated to the side.Moreover, the yellow front light is such that the optical axis A of the front parabolic reflecting surface 14 is the light of the reflector 6 of the headlamp 4. Headlight bulb 4 because it is tilted downward from axis B
It illuminates nearby areas brighter than light. Furthermore, this reflector 13 is attached to the right translucent side cover 22' attached to the right side wall 10' of the right headlamp housing 1', with its upper groove hole 19 and the lower groove located at the rear. It is installed by press-fitting and fixing the hole 21 and the other lower groove hole 21' provided symmetrically.

(G) Effect of the invention The bicycle headlight of the present application is constructed as described above, and in particular, it includes a headlight casing that houses a headlight bulb and a reflector, and has a side bulb protrusion hole drilled in the side wall. , a front parabolic reflective surface and a rear parabolic reflective surface are provided in communication with the side light bulb protruding from the protruding hole in the front and rear direction so that their focal positions coincide with each other, and the head of the side light bulb is It has a reflector having an insertion hole through which the side light bulb is inserted so as to be at the focal point, and a translucent side cover attached to the side wall of the housing, and the light from the side light bulb is The light is reflected by the front parabolic reflecting surface and the rear parabolic reflecting surface and is radiated back and forth as forward light and backward light, improving visibility and safety. Moreover, there are some types that use side light bulbs to illuminate nearby areas more brightly than the light from headlight bulbs.

[Brief explanation of drawings]

The drawings all relate to embodiments of the proposed bicycle headlamp; Fig. 1 is an overall perspective view, Fig. 2 is a partially cutaway front view, Fig. 3 is a central cross-sectional view, and Fig. 4 is a reflector and side view. FIG. 5 is a central vertical cross-sectional view of the reflector, showing the relationship with the side cover. 4...Headlight bulb, 6...Reflector, 10...Side wall, 12...Protrusion hole, 1...Headlight housing, 11...
...Side light bulb, 14...Front parabolic reflection surface, 15...
Rear parabolic reflective surface, 17...insertion hole, 13...reflector, 22...translucent side cover.

Claims (1)

[Scope of utility model registration request] A headlight casing with a headlight bulb and a reflector inside and a side bulb protrusion hole drilled in the side wall, and a side bulb protruding from the protrusion hole, are placed front and rear so that their focal positions match. a reflector having a front parabolic reflecting surface and a rear parabolic reflecting surface provided in communication with each other in the direction; and an insertion hole through which the side bulb is inserted so that the head of the side bulb is at the focal position; , a means for storing the reflector so that the optical axis of the front parabolic reflecting surface of the reflector is rotated and tilted downward from the optical axis of the reflector, and a translucent side panel attached to the side wall of the housing. An automobile headlamp comprising: a cover;