JPH06103801A - Headlamp device of motorcycle - Google Patents

Abstract

PURPOSE:To provide a headlamp device of a motorcycle which can increase the degree of freedom in layout of components inside a cowling located at the front of the body of the motorcycle and improve the aerodynamic characteristic of the body while miniaturizing the device while securing a required quantity of light. CONSTITUTION:A motorcycle headlamp device 10 comprises a projector lamp 14 disposed at the center in the width direction of a motorcycle and ordinary lamps 13 disposed on both sides of the lamp 14, the ordinary lamps 13 are used for high beams and the projector lamp 14 for low beams. The projector lamp 14 can be miniaturized with an effective quantity of light secured, since a specified effective solid angle can be obtained by use of an elliptic reflector of smaller aperture. When used for high beam the ordinary lamps 13 can also be miniaturized in the same manner as the projector lamp 14, with the effective quantity of light secured.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art An ordinary lamp generally used as a headlight device for a motorcycle is equipped with a reflector composed of a parabolic mirror. In the lamp, a light source installed near the focal point of the reflector is used. Light is reflected by the parabolic mirror of the reflector to become parallel light, which travels forward, and is partially refracted and diffused by the front lens to obtain a desired light distribution pattern.

[0003]

However, since the above-mentioned ordinary lamp uses a parabolic mirror for the reflector, its aperture diameter becomes large with respect to the effective solid angle required to obtain a required light amount. This imposes restrictions on the layout of parts inside the cowling of a motorcycle that does not have enough space in the front of the vehicle body, and also causes the cowling to become larger and the shape to be restricted, which limits the improvement of the aerodynamic characteristics of the vehicle body. .

The present invention has been made in view of the above problems, and an object of the present invention is to reduce the size while securing a required amount of light, and increase the degree of freedom in the layout of parts inside the cowling at the front of the vehicle body. The object of the present invention is to provide a headlight device for a motorcycle capable of improving the aerodynamic characteristics of a vehicle body.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the present invention is directed to a motorcycle headlamp in which a plurality of headlamps are arranged in an opening provided in a cowling covering a front portion of a vehicle body. In the device, at least one of the headlights is a normal lamp having a parabolic reflector, and the other is a projector lamp having an elliptical reflector and a convex lens. It is characterized in that the lamps are arranged close to each other in the direction of the height or in the height direction, and the normal lamp is used for the Hi beam and the projector lamp is used for the Lo beam.

[0006]

As is well known, since the projector lamp uses an elliptical reflecting mirror as a reflector, an elliptic reflecting mirror having a smaller diameter is sufficient to obtain a predetermined effective solid angle, and the size thereof can be reduced while securing a sufficient amount of effective light. Can be achieved.

On the other hand, in a normal lamp equipped with a reflector of a parabolic mirror, the light hitting the boundary between the cut surfaces of the front lens is lost, but the lamp has a wider irradiation area than that for the Lo beam. When used for a Hi beam having a light source, it is sufficient to irradiate this lossy light at least forward, so that the loss is reduced and the lamp can be miniaturized while securing the required light amount.

Therefore, as in the present invention, the normal lamp is
If the projector lamps for i-beam and the projector lamps for Lo-beam are used, the size of these lamps can be reduced, and if they are arranged close to each other, the installation space is small and the space in the front of the vehicle body is small. Even in a motorcycle with no room, the degree of freedom in the layout of parts inside the cowling in the front part of the vehicle body is increased, the degree of freedom in designing the cowling is also increased, and the aerodynamic characteristics of the vehicle body are improved.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of a headlight device according to the present invention,
2 is a cutaway plan view of the headlight device, FIGS. 3 and 4 are sectional views taken along lines AA and BB of FIG. 1, FIG. 5 is a front view of the motorcycle, and FIG. 6 is the motorcycle. Front broken side view, FIG.
FIG. 7 is a sectional view taken along line CC of FIG. 6.

An inverted trapezoidal opening 1a is formed at the center of the cowling 1 covering the front of the motorcycle body shown in FIG. 5, and the headlight device according to the present invention is formed in the opening 1a. 1
0 is set.

Further, as shown in FIG. 6, a meter 2 is provided inside the cowling 1 and above the headlight device 10.
Is provided. In FIG. 6, 3 is a head pipe located behind the headlight device 10, 4 is a front fork, and 5 is a main frame.

As shown in FIG. 5, winkers 6 and 6 are provided on the left and right in front of the vehicle body. In this embodiment, each winker 6 includes a stay 7 and a bracket 26.
It is supported by the support pipe 27 of the cowling 1 via (see FIG. 7), and this is mounted on the dividing line 1b of the cowling 1 as shown in FIG. With this structure, the cowling 1 can be easily disassembled and assembled without removing the winkers 6 and 6 for maintenance.

Here, details of the configuration of the headlight device 10 according to the present invention will be described with reference to FIGS.

1 and 2, reference numeral 11 denotes a rectangular frame-shaped body, and the front surface of the body 11 is covered with a front glass 12. A projector lamp 14 is disposed in the center of the body 11 in the vehicle width direction, and an ordinary lamp 13 which has been conventionally used is disposed on the left and right of the projector lamp 14 in the vicinity of the projector lamp 14. ing.

The normal lamp 13 is for a Hi beam, which is a parabolic mirror 1 as shown in FIGS.
The parabolic mirror 15a is provided with a reflector 15 composed of 5a, a halogen light bulb 16 as a light source is installed in the vicinity of the focal point f of the parabolic mirror 15a, and the back of the lamp 13 is covered by a back cover 17 fitted in the body 11. ing. still,
The front opening of the reflector 15 is formed in a substantially rectangular shape as shown in FIG. 1, and the reflector 15 has a fulcrum 18
It is supported so as to be tiltable in the vertical and horizontal directions (see FIG. 1).

Further, the projector lamp 14 is for a Lo beam, which is, as shown in FIGS. 2 and 4,
The elliptic reflecting mirror 19a is provided with a reflector 19, a halogen light bulb 20 as a light source is installed near the first focal point f ₁ of the elliptic reflecting mirror 19a, and a second halogen lamp 20 is provided in front of the second focal point f ₂ . A convex lens 21 having a focal point at the focal point f ₂ is installed. The space between the convex lens 21 and the reflector 19 is tapered toward the front, and is a tapered guide tube 2.
And the second inside the guide cylinder 22.
A shade 23 is installed near the focal point f ₂ . still,
The back of the projector lamp 14 is covered by a back cover 24 fitted in the body 11. Further, the reflector 19 is supported so as to be tiltable in vertical and horizontal directions about a fulcrum 25 (see FIG. 1).

Although not shown, the front lens 12 is formed with a plurality of cut surfaces, and a desired light distribution pattern can be obtained by the pattern of the cut surfaces.

By turning on a light switch (not shown) at night and setting the dimmer switch on the Hi beam side, the normal lamp 13 for the Hi beam and the projector lamp 14 for the Lo beam are turned on at the same time. To do. That is, in each of the Hi-beam lamps 13, the light emitted from the halogen bulb 16 is reflected by the parabolic mirror 15a of the reflector 15 to become parallel light as shown by the arrow in FIG. The front lens 12 partially refracts and diffuses the light to illuminate a predetermined irradiation area. Further, in the projector lamp 14 for the Lo beam, the light emitted from the halogen bulb 20 is as shown by the arrow in FIG.
After being reflected by the elliptical reflecting mirror 19a of the reflector 19, part of the light is condensed at the second focal point f ₂ and the other is blocked by the shade 23, and the light condensed at the second focal point f ₂ passes through the convex lens 21. It becomes parallel light and goes forward, and the front lens 12
It passes through and is fading.

On the other hand, when the switch is switched from the Hi beam switch to the Lo beam switch, the normal lamp 13 for the Hi beam is turned off, only the projector lamp 14 for the Lo beam is turned on, and the projector lamp 14 is turned on.
Illuminates a predetermined irradiation area by the same action as described above.

Since the projector lamp 14 uses the elliptic reflecting mirror 19a for the reflector 19, the diameter of the elliptic reflecting mirror 19a may be small in order to obtain a predetermined effective solid angle, and a sufficient amount of effective light can be secured. However, the size can be reduced.

On the other hand, in the ordinary lamp 13 provided with the reflector 15 composed of the parabolic mirror 15a, the front lens 12
The light hitting the boundary between the cut surfaces of No. 2 becomes a loss, but since the lamp 13 is used for the Hi beam in this embodiment, it is sufficient to irradiate the light having the loss at least forward. As a result, the loss of light is reduced, and the lamp 13 can be downsized while ensuring the required amount of light.

As a result of the above, each of the lamps 13 and 14 can be downsized, and if the three lamps 13 and 14 are arranged close to each other in the vehicle width direction as in this embodiment, the installation space for these lamps can be reduced. Even in a motorcycle that is small and has no space in the front part of the vehicle body, the degree of freedom in layout of the meter 2 and the like arranged inside the cowling 1 in the front part of the vehicle body and the degree of freedom in designing the cowling 1 are increased. The aerodynamic characteristics of the vehicle body can be improved.

Further, if the lamps 13 and 14 are arranged close to each other as described above, the irradiation light from these lamps 13 and 14 is no different from that emitted from the center of the motorcycle body, and the headlight is not changed. The sense of unity of the lighting device 10 is not impaired. In the present embodiment, the projector lamps 14 are simultaneously turned on while dimming during the Hi beam.
The projector lamp 14 may be turned off during the Hi beam.

By the way, in this embodiment, the projector lamp 14 is arranged at the center of the vehicle body width direction and the normal lamps 13 are arranged on both sides thereof. On the contrary, the normal lamp 13 is arranged at the center and the projectors are arranged on both sides thereof. The lamp 14 may be arranged. Further, as shown in FIG. 8, the normal lamp 13 and the projector lamp 14 may be arranged in the height direction. That is, as shown in FIG.
May be arranged on the upper side and the projector lamp 14 may be arranged on the lower side, or the projector lamp 14 may be arranged on the upper side and the ordinary lamp 13 may be arranged on the lower side as shown in FIG. Also, FIG.
As shown in (c), two projector lamps 14 are arranged below the normal lamp 13, or conversely, two projector lamps 14 are arranged above the normal lamp 13 as shown in FIG. You can set it up.

[0026]

As is apparent from the above description, according to the present invention, a headlamp for a motorcycle, in which a plurality of headlamps are arranged in an opening provided in a cowling covering a front part of a vehicle body. In the device, at least one of the headlights is a normal lamp having a parabolic reflector, and the other is a projector lamp having an elliptical reflector and a convex lens. Since the normal lamp is for Hi beam and the projector lamp is for Lo beam, the headlamp device is miniaturized while ensuring a required light quantity,
As a result, the degree of freedom in the layout of parts inside the cowling at the front of the vehicle body can be increased, and the aerodynamic characteristics of the vehicle body can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a headlight device according to the present invention.

FIG. 2 is a cutaway plan view of the headlight device according to the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a front view of the motorcycle.

FIG. 6 is a cutaway side view of the front portion of the motorcycle.

7 is a cross-sectional view taken along line CC of FIG.

8 (a) to (d) are schematic views showing arrangement examples of lamps according to a modified embodiment of the present invention.

[Explanation of symbols]

 1 Cowling 1a Cowling opening 10 Headlight device 13 Normal lamp 14 Projector lamp 15, 19 Reflector 15a Objective mirror 19a Elliptical mirror 21 Convex lens

Claims (1)

[Claims] 1. A headlight device for a motorcycle comprising a plurality of headlights arranged in an opening provided in a cowling covering a front part of a vehicle body, wherein at least one of the headlights is parabolic. It consists of a normal lamp equipped with a reflector of a face mirror, and the other consists of a projector lamp equipped with a reflector of an elliptical reflecting mirror and a convex lens, and these lamps are arranged close to each other in the vehicle width direction or height direction, The lamp of H
A headlight device for a motorcycle, characterized in that an i-beam is used and a projector lamp is used for a Lo-beam.