JPH0797441B2 - Motorcycle headlamp device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlamp device for a motorcycle.

[0002]

2. Description of the Related Art A headlamp device in which an opening is provided in the front of a front cowl provided in the front part of a motorcycle and headlamps are provided on the left and right in the opening is disclosed in JP-A-62-694.
No. 01 disclosed. In this technique, a head tube of a front fork is provided with a stay, and left and right head lamps are attached to and supported by the stay. Such a conventional motorcycle headlamp is equipped with a reflecting mirror consisting of a parabolic mirror having a substantially hemispherical cross section, and the light from a bulb provided near the focal point of the reflecting mirror is reflected by the parabolic surface of the reflecting mirror. The light is reflected by a mirror and emitted as parallel light to the front, and the light on the front lens is partially refracted and diffused to obtain a predetermined light distribution pattern.

[0003]

By the way, in the above-mentioned conventional lamp, since the parabolic mirror having a substantially hemispherical shape is used as the reflecting mirror, the opening becomes large in order to obtain the required light quantity. As a result, the layout of the devices and parts placed in the narrow space in the front of the vehicle body covered by the front cowl is restricted, resulting in an increase in the size of the front cowl, a reduction in the freedom of external design, and a There is a risk of impeding the improvement of aerodynamic characteristics.

The present invention has been made to solve the above problems, and the purpose thereof is to secure a required amount of light, reduce the size of the headlamp device, and lay out components and equipment in the front cowl. (EN) Provided is a headlamp device for a motorcycle, which is designed to improve the degree of freedom of the vehicle and the aerodynamic characteristics of the cowl.

[0005]

[Means for Solving the Problems] The means for solving the above-mentioned problems are as follows. The front part is covered with a front cowl, and the head lamp is provided in close proximity to the front cowl opening in the vehicle width direction. In the disposed motorcycle, one of the headlamps is a lamp provided with a substantially hemispherical reflecting mirror to constitute a lamp for a traveling beam (for a high beam) having at least a light amount necessary for traveling, and the other of the headlamps. Was constructed by a projector lamp consisting of a reflecting mirror having a spheroidal reflecting surface and a convex lens, and a lamp for low beam (for low beam) was constructed.

[0006]

[Function] Built-in shade that blocks part of the beam, and
When contrasted with a dual-purpose lamp that has a diameter for securing the low beam light quantity by the high beam focus reflector, the high beam light quantity can be secured by the projector lamp, so the high beam lamp can achieve the required light quantity. Correspondingly, it can be configured to have a small diameter, and a space can be secured behind the high beam lamp, which has a smaller depth dimension compared to the case where both are configured with a projector lamp that requires a depth dimension. Since it is possible to configure each with a small diameter while suppressing the increase in the depth dimension to the minimum, it is possible to reduce the size while securing the light amount, and it is possible to secure the freedom of layout of the front cowl part. it can.

[0007]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a front view of the motorcycle, FIG. 2 is a perspective view of the motorcycle as seen obliquely from the front, FIG. 3 is an enlarged front view of the headlamp device, FIG. 4 is a sectional view taken along the line IV-IV of FIG.
5 is a sectional view taken along the line VV of FIG. 3, and FIG. 6 is a line VI-V of FIG.
FIG. 7 is a sectional view taken in the direction of the arrow I, FIG. 7 is an enlarged front view of a headlamp device for a motorcycle according to another embodiment of the present invention, and FIG. 8 is an enlarged front view showing another aspect of the headlamp device of another embodiment. is there.

In FIGS. 1 and 2, reference numeral 11 denotes a motorcycle, and the front side of the motorcycle 11 is a front cowl 12,
The rear part is covered with a rear cowl 13. The front cowl 12 has an upper cowl 14 and a middle cowl 16. Reference numeral 17 is a windscreen arranged above the upper cowl 14. Between the upper cowl 14 and the windscreen 17, a head column cover 18 is arranged.

In the headlamp device 18, a housing 19 having an opening at the front is supported by a frame (not shown), the upper cowl 14 or the like, and an opening 1 at the front of the housing 19 is provided.
An outer lens 20 is fitted in the housing 9 a, and a lamp unit 21 is provided in the housing 19. The housing 19 is arranged so that the lower edge of the opening 19a is substantially aligned with the upper edge of the upper cowl 14, and the outer lens 20 has a streamline shape of a substantially ∩ shape in plan view and is continuous with the upper cowl 14, as is apparent from FIG. It has a curved surface. This outer lens 2
In No. 0, two circular transparent portions 20a and 20b are formed corresponding to the lamp of the lamp unit 21, which will be described later, to form a substantial opening, and the other portion (dotted portion in the figure) is a semi-transparent cloudy portion. It is formed as 20c.

The lamp unit 21 has a low beam (low beam) lamp 22, a traveling beam (high beam) lamp 23, and a position lamp 24. The position lamp 24 is arranged between the lamps 22 and 23. ing. The low-beam low-beam lamp 22 is a projector-type lamp, as shown in FIG. 4, and has a spheroidal anti-slope 25a.
5, a bulb 26, a shade 27 and a lens 28. The reflecting mirror 25 is supported by the housing 19, and the reflecting mirror 2
The valve 26 is provided in the anti-slope 25a of No. 5 at a position that coincides with the first focus of the anti-slope 25a.

The shade 27 has a light shielding property and is provided below the optical axis between the first focal point of the anti-slope 25a and the second focal point in the front. The lens 28 is a convex lens, and is supported by the front end of the reflecting mirror 25a at the front position of the shade 27. Lamp 22 for passing beam
After the light emitted from the bulb 26 is reflected by the anti-slope 25a, a part of the light is blocked by the shade 27 and converges to the second focal point, and is projected forward through the lens 28.

In the traveling beam lamp 23, a reflecting mirror 29 having a substantially hemispherical anti-slope 29a is attached to the housing 19 as shown in FIG.
A bulb 30 is provided therein, and a lens 31 having an optical pattern is provided at the front end of the reflecting mirror 29. In the traveling beam lamp 23, the light emitted from the bulb 30 is reflected by the anti-slope 29a and projected from the lens 31. Further, the position lamp 24 is erected at the lower front portion of the housing 19. As is apparent from FIGS. 1 and 3, the outer lens 2
0 has a transparent portion in front of the position lamp 24.

As described above, the headlamp device 18 obtains a low beam by passing only the low beam lamp 22 which is a low beam, and the low beam lamp 22 and the traveling beam (high beam). Both of the lamps 23 and 23 are turned on to obtain a traveling beam. Since the passing beam lamp 22 is formed of a projector lamp having a clear light distribution pattern, glare can be extremely reduced. Further, since the projector type lamp 22 uses an elliptical reflecting mirror as the reflecting mirror, an elliptic reflecting mirror having a small diameter is sufficient, and the size can be reduced while sufficiently securing the effective light amount.

On the other hand, in the headlamp device 18, the housing 19, the outer lens 20, and the lamp unit 21 are assembled in advance, and the assembled whole is attached to the frame, the upper cowl 14, or the like and attached to the motorcycle 11. To be done. Therefore, the mounting is easy. Further, in this headlamp device 18, since the outer lens 20 forms a curved surface that is continuous with the upper cowl 14, there is no increase in air resistance, and
There is no loss of appearance. That is, since the outer lens 20 exhibits the same function as that of the front cowl 12, the air resistance does not increase even if the headlamp device 18 is provided, and no special component for reducing the air resistance is required. The number of parts can be reduced.

FIG. 7 shows a headlamp device according to another embodiment of the present invention. The same parts as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, as shown by phantom lines in FIGS. 4, 5 and 6, the extension 32 is arranged in parallel with the outer lens 20, and the shape of the outer lens 20 is different from that of the above embodiment. Is. The extension 32 includes a light transmitting hole 32a that substantially matches the lens 28 of the low beam lamp 22, and a lens 31 of the traveling beam lamp 23.
Is formed, a recess 32c is formed between the light transmitting holes 32a and 32b, and the position lamp 24 is provided below the recess 32c.

The outer lens 20 is made of a transparent material and forms a curved surface continuous with the upper cowl 14 as in the above-mentioned embodiment, and each lamp 2 is provided on the front surface.
Optical patterns 33, 34, and 35 for forming a predetermined light distribution pattern are formed corresponding to 2, 23, and 24. Optical pattern 33 corresponding to the lamp 22 for the low beam
Is formed on a lower part of a circular area corresponding to the lens 28, and the optical pattern 34 corresponding to the traveling beam lamp 23 is formed on the entire circular area corresponding to the lens 31. The optical pattern 33 corresponding to the passing beam lamp 22 can be formed in the area as shown in FIG.

Even in this embodiment, the outer lens 20
Since it forms a curved surface continuous with the upper cowl 14, the air resistance can be reduced without increasing the number of parts, and the appearance can be improved.

In each of the above-mentioned embodiments, the housing 19 and the upper cowl 14 are separate members, but these housing and upper cowl can be integrated, and the front cowl 12 has an opening, or The present invention can also be achieved by forming concave portions, forming these openings or concave portions, and covering these openings or concave portions with the outer lens 20 having a curved surface continuous with the front cowl 12.

As described above, according to the present invention, one of the headlamps is a lamp provided with a reflecting mirror having a substantially hemispherical shape, and a lamp for a traveling beam (for a high beam) having at least a light amount necessary for traveling is constructed. Then, since the other of the headlamps is composed of a reflector having a spheroidal reflecting surface and a projector lamp composed of a convex lens to form a lamp for low beam (for low beam), a part of the beam is blocked. When compared with a dual-purpose lamp that has a built-in shade and has a high beam focus reflector that has a diameter for securing the low beam light quantity, the light quantity during the low beam can be secured by the projector lamp. Lamps can be configured with a small diameter to meet the required light intensity, and a project that requires a depth dimension. It is possible to secure a space behind the high-beam lamp, which has a smaller depth dimension than the case where both of them are configured with a lamp, and configures each with a small diameter while minimizing the increase in the depth dimension. Therefore, it is possible to reduce the size of the front cowl while securing the light amount, and it is possible to secure the degree of freedom of the layout of the front cowl portion. Therefore, the headlamp device of the present invention can adopt a large inclined portion of the front cowl without increasing the inclination of the lens surface on the front surface of the lamp due to the above-mentioned degree of freedom, and as a result, the light distribution of the headlamp device is secured. In addition, there is a remarkable effect that the aerodynamic characteristics of the vehicle body can be improved.

[Brief description of drawings]

[Figure 1] Front view of a motorcycle

FIG. 2 is a perspective view of the motorcycle as seen obliquely from the front.

FIG. 3 is an enlarged front view of a headlamp device.

4 is a sectional view taken along the line IV-IV of FIG.

5 is a sectional view taken along the line VV of FIG.

6 is a sectional view taken along the line VI-VI of FIG.

FIG. 7 is an enlarged front view of a headlamp device for a motorcycle according to another embodiment of the present invention.

FIG. 8 is an enlarged front view showing another aspect of the headlamp device of another embodiment.

[Explanation of symbols]

11 ... Motorcycle, 12 ... Front cowl, 18 ...
Headlamp device, 20a, 20b ... Circular transparent part forming an opening, 22 ... Lamp for passing beam composed of projector lamp, 23 ... Lamp for traveling beam, 2
5 ... Elliptical reflecting mirror, 28 ... Convex lens, 29 ... Hemispherical reflecting mirror.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Otoba 1-4-1 Chuo, Wako-shi, Saitama, Honda R & D Co., Ltd. (56) Reference JP-A-62-69401 (JP, A) JP Sho 63-158701 (JP, A) JP-A 64-18739 (JP, A)

Claims (1)

[Claims] 1. A motorcycle in which a front portion is covered with a front cowl, and a headlamp is provided in an opening in the front surface of the front cowl which is spaced apart in the vehicle width direction and is arranged in close proximity to one of the headlamps. With a lamp equipped with a planar reflector
A traveling beam (high beam) lamp having at least the amount of light necessary for traveling is constructed, and the other of the headlamps is constituted by a reflector having a spheroidal reflecting surface and a projector lamp consisting of a convex lens, and a passing beam. A headlamp device for a motorcycle, characterized by comprising a lamp for a vehicle (for a low beam).