JP3133244B2 - Vehicle headlights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlamp having a position valve.

[0002]

2. Description of the Related Art In headlamps for vehicles such as motorcycles,
In many cases, not only a main bulb for headlamp light distribution but also a position bulb for front position lamp light distribution is housed in the lamp body.

The light distribution of the front position lamp in such a headlight is formed by direct light from a position bulb and light reflected from a reflecting surface of a reflecting mirror.
Since the reflection surface is originally for irradiating the light from the main bulb to the front to obtain a headlamp light distribution,
The wide diffusion area in the front position lamp light distribution is formed exclusively by direct light.

[0004]

It is desired that the front position lamp has a light distribution characteristic so that the lighting state of the front position lamp can be visually recognized even from an angle direction close to 90 ° to the side of the lamp. In order to obtain the required front position lamp light distribution by direct light of
It is necessary to arrange the position valve as close to the front end as possible in the lamp body.

However, there are cases where the position bulb cannot be disposed near the front end of the lamp body due to restrictions on the lamp design or the vehicle body structure. Even when the position bulb can be disposed near the front end, sufficient side irradiation light is required. May not be obtained, and in such a case, the required front position lamp light distribution cannot be obtained.

The present invention has been made in view of such circumstances, and even in the case of a lamp configuration in which sufficient side irradiation light cannot be obtained by direct light from a position bulb. It is an object of the present invention to provide a vehicle headlamp capable of obtaining a required front position lamp light distribution.

[0007]

According to the present invention, an auxiliary reflecting surface is formed on both left and right sides of a reflecting surface of a reflecting mirror to extend light from a position valve using the auxiliary reflecting surface. The object is achieved by reflecting light in opposite directions.

That is, according to the present invention, as described in claim 1, a main bulb for light distribution of a headlamp and a position bulb for light distribution of a front position lamp include:
In a vehicle headlamp that is housed in a lamp body provided with a reflecting mirror that reflects light from the main valve to the front, the position valve is disposed substantially at the lower center in the left-right direction of the lamp body, On both left and right sides of the reflection surface of the reflection mirror, auxiliary reflection surfaces for reflecting light from the position valve in directions opposite to the left and right directions of the light are formed to extend, respectively. is there.

The "lamp having a reflecting mirror" may be one in which the reflecting mirror is fixed to a lens or the like and the reflecting mirror itself constitutes a part of the lamp (so-called unit movable type). However, as described in claim 4, the reflecting mirror may be housed in a lamp body composed of a lens, a body, and the like (so-called reflecting mirror movable type).

[0010] The above-mentioned "substantially the center in the left-right direction in the lamp body" means that, with respect to each of the pair of auxiliary reflecting surfaces, light from a position valve incident on the auxiliary reflecting surface is directed in a direction opposite to the incident direction. It means a position within a range that can be reflected.

[0011]

As described above, according to the present invention, auxiliary reflecting surfaces are formed on both left and right sides of the reflecting surface of the reflecting mirror, respectively. Direction The light from the position valve, which is located at the lower center, is reflected in the direction opposite to the left and right from the direction of incidence, so even if direct light from the position valve, sufficient side irradiation light can be obtained. Even in the case of a lamp configuration that cannot be performed, sufficient side irradiation light can be obtained by superimposing the reflected light from each of the auxiliary reflecting surfaces on the direct light.

As described above, according to the present invention, the required front position lamp light distribution can be obtained even in a lamp configuration in which sufficient side irradiation light cannot be obtained by direct light from the position bulb. Obtainable. Moreover, according to the present invention, the above effects can be obtained without increasing the number of parts of the lamp. Further, in the present invention, since the position valve is disposed substantially below the center in the left-right direction in the lamp body, the light from the position valve can be radiated to the left and right with good balance.

By the way, in the front position lamp, only the direct light from the position bulb tends to lack the irradiation light in an angle direction close to 90 ° to the side of the lamp. It is preferable that each auxiliary reflection surface is formed so that the light from the position bulb reflected by the reflection surface can be irradiated in an angle direction of 80 ° or more to the side of the lamp. This is particularly effective in the case of a lamp configuration in which the position bulb cannot be arranged near the front end of the lamp body.

In the above configuration, as described in claim 3, if a shade formed so as to prevent light from the main valve from being incident on each of the auxiliary reflection surfaces is arranged around the main valve. It is possible to eliminate the possibility that the incident light from the main bulb to each auxiliary reflection surface becomes stray light and adversely affects the headlamp light distribution.

According to a fourth aspect of the present invention, when the reflecting mirror is housed in the lamp body, the reflecting mirror is supported by the lamp body so as to be capable of aiming, and the position valve is provided. Is fixed to the lamp body in front of the reflecting mirror, the position valve can be arranged without hindering the aiming operation and without having to form a hole for fixing the position valve in the reflecting mirror.

Further, in this case, as described in claim 6, an extension is provided in front of the reflector in the lamp body so as to surround the front end opening of the reflector and fixed to the lamp body. In this case, if the position valve is arranged so as to protrude upward from the upper portion of the lamp body bottom in the extension, the fixing structure of the position valve to the lamp body can be made invisible from outside the lamp. In addition, since the position of the position bulb is relatively high, the light from the position bulb can be incident on each auxiliary reflecting surface at an angle close to the normal direction, thereby improving the irradiation efficiency of the front position lamp. Can be enhanced.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing a vehicle headlamp according to an embodiment of the present invention, and FIG. 2 is a plan sectional view thereof.

The headlamp 10 according to the present embodiment is a headlamp mounted on a two-wheeled vehicle, and includes a reflector unit 18 in a lamp body 16 formed by a lens 12 and a body 14. It is arranged so that aiming is possible in the direction and the left-right direction. The lamp body 16 further includes an extension 2.
0 and the position valve 22 are fixedly arranged.

The reflecting mirror unit 18 includes a bulb 24
(Main valve), a reflecting mirror 26, and a shade 28.

The lens 12 is formed as a transparent lens having no light distribution control function. This lens 12
Is formed in a curved shape curved right and left, and is attached to the body 14 via a sealant 30. A socket cover 32 is attached to the rear end opening of the body 14.

The extension 20 is used for the lens 12
It is arranged so as to surround the opening at the front end of the reflecting mirror 26, and is attached to the periphery of the lens 12.

The position valve 22 is disposed at the lower left and right center of the lamp body 18 so as to protrude upward from the extension 20. A socket 34 for supporting the position valve 22 is fixed to the body 14, and an insertion hole for inserting the position valve 22 is formed in the extension 20, and a bushing 36 surrounding the position valve 22 is formed in the insertion hole.
Is fitted.

The valve 24 is an H4 valve having a so-called C-8 type double filament. The bulb 24 is fixed at a predetermined position with respect to the reflecting mirror 26 by a wire spring 38, and the socket cover 30 is attached to the bulb 24.

The reflecting mirror 26 is a reflecting mirror made of FRP. The reflecting surface 26a has a light distribution controlling step formed on a curved surface, and controls the light distribution of the light incident from the bulb 24 to a predetermined level. Headlight distribution pattern is formed. Auxiliary reflecting surfaces 26b are formed on both left and right sides of the reflecting surface 26a of the reflecting mirror 26, respectively.
Each of these auxiliary reflection surfaces 26b is formed as a curved surface inclined toward the lamp central axis Ax with respect to the reflection surface 26a, and reflects the light from the position bulb 22 in a direction opposite to the incident direction. Has become. At that time, FIG.
As shown by an arrow, the angle at which each auxiliary reflection surface 26b is formed is set so that light can be emitted in an angle direction of 80 ° or more to the side of the lamp.

The shade 28 is arranged around the front end of the bulb 24 and is fixed to the reflecting mirror 26.
As shown by a two-dot chain line in FIG. 2, the shade 28 is formed in a shape such that light from the auxiliary lamp filament 24a of the bulb 24 is not incident on each auxiliary reflection surface 26b.

As described in detail above, in the present embodiment, the position bulb 22 is disposed substantially below the center of the lamp body 16 in the left-right direction, and the auxiliary reflection surfaces are provided on both left and right sides of the reflection surface 26a of the reflection mirror 26. Since each of the extension portions 26b is extended, the following operation and effect can be obtained.

That is, when the position valve 22 is
6, the light from the position valve 22 is incident at an angle close to the normal direction over the entire area of the reflection surface 26a, so that substantially uniform reflected light can be obtained. This makes it possible to enhance the visibility from the front of the lamp (front of the vehicle) when the position bulb is turned on.

Further, since the light from the position bulb 22 is reflected by the auxiliary reflecting surfaces 26b in directions opposite to the left and right directions of the incident light, the lamp side irradiation light is different from the direct light from the position bulb 22 in each direction. The light reflected from the auxiliary reflection surface 26b is superimposed, and thereby sufficient side irradiation light can be obtained.

In particular, in the present embodiment, each auxiliary reflection surface 26b is formed so as to irradiate the light from the position bulb 22 reflected by the auxiliary reflection surface 26b in an angle direction of 80 ° or more to the side of the lamp. Therefore, sufficient irradiation light can be applied to an angle direction close to 90 ° to the side of the lamp where irradiation light tends to be insufficient with only the direct light from the position bulb 22.

In the present embodiment, since the position bulb 22 is disposed substantially below the center of the lamp body 16 in the left-right direction, it is possible to irradiate the side irradiation light from the position bulb 22 to the left and right in a well-balanced manner. it can.

In addition, in the present embodiment, since each of the auxiliary reflecting surfaces 26b is formed to extend on both the left and right sides of the reflecting surface 26a, the above-mentioned effect can be obtained without increasing the number of parts of the lamp. .

Further, in the present embodiment, the shade 28 prevents light from the auxiliary lamp filament 24a of the bulb 24 from being incident on the respective auxiliary reflection surfaces 26b. It is possible to eliminate the possibility that the light incident on the headlamp becomes stray light and adversely affects the light distribution of the headlamp.

Although the reflecting mirror 26 in the present embodiment is accommodated in the lamp body 16 so as to be able to aim, the position valve 22 is located in front of the reflecting mirror 26 and the body 14.
Therefore, the position valve 22 can be arranged without interfering with the aiming operation and without having to form a hole for fixing the position valve in the reflecting mirror 26. Further, since the position bulb 22 in the present embodiment is disposed so as to protrude upward from the extension 20, the structure for fixing the position bulb 22 to the lamp 16 can be hidden from the outside of the lamp. In addition, since the position of the position bulb 22 is relatively high, the light from the position bulb 22 can be incident at an angle close to the normal direction of each auxiliary reflection surface 26b, thereby improving the irradiation efficiency of the front position lamp. Can be increased.

In the lamp according to the above embodiment, a predetermined headlamp light distribution pattern is formed by the light distribution control function of the reflector 26, and the lens 12 is a transparent lens. The same configuration can be adopted for the lamp having the steps formed thereon, whereby the same operation and effect as in the above embodiment can be obtained.

In the above embodiment, the description has been given of the headlamp for two-wheeled vehicles. However, the same configuration can be adopted for the headlamp for four-wheeled vehicles. The operation and effect of the present invention can be obtained.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a vehicle headlamp according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view showing the headlight.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Headlight for vehicles 12 Lens 14 Body 16 Lamp body 18 Reflector unit 20 Extension 22 Position valve 24 Valve (main valve) 24 Filament for sublight 26 Reflector 26a Reflective surface 26b Auxiliary reflective surface 28 Shade Ax Lighting axis

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F21S 8/10 F21V 7/09 B62J 6/02

Claims (6)

(57) [Claims] 1. A main bulb for distributing light from a headlamp,
A position bulb for distributing a front position lamp, and a headlamp for a vehicle, wherein the position bulb is housed in a lamp body provided with a reflecting mirror for reflecting light from the main valve to the front. Auxiliary reflecting surfaces for reflecting light from the position valve in directions opposite to the incident direction of the light are respectively extended on both left and right sides of the reflecting surface of the reflecting mirror. A headlamp for a vehicle, wherein the headlamp is formed. 2. Each of the auxiliary reflecting surfaces reflects the light from the position bulb reflected by the auxiliary reflecting surface by 80 ° to the side of the lamp.
The vehicular headlamp according to claim 1, wherein the vehicular headlamp is formed so as to be capable of irradiating in the above-described angle direction. 3. A shade formed around the main valve so as to prevent light from the main valve from being incident on each of the auxiliary reflection surfaces. Headlights for vehicles. 4. The vehicle headlamp according to claim 1, wherein said reflector is housed in said lamp body. 5. The vehicle according to claim 4, wherein the reflector is supported by the lamp so as to be able to aim, and the position valve is fixed to the lamp in front of the reflector. Headlights. 6. An extension disposed in front of the reflector in the lamp body so as to surround a front end opening of the reflector and fixed to the lamp body, wherein the position valve is provided with the lamp body in the extension. The vehicle headlight according to claim 5, wherein the vehicle headlight is arranged so as to protrude upward from a bottom upper portion.