JPH0864011A - Automobile lighting fixture - Google Patents

Abstract

PURPOSE: To prevent the deviation of relative relational positions and directions of mutual optical axes in plural types of lighting fixtures by improving an automobile lighting fixture having a function as plural types of the lighting fixtures by being provided with a plurality of reflectors in a lighting space composed of one lamp housing 7. CONSTITUTION: The fog lamp part 8a of a reflector and the cornering lamp part 8b of the reflector are integrally composed. The complexly and integrally constituted reflector 8 mentioned above is tiltably supported, using a globular coupler 9, and is tilted, using an adjusting screw. Thus the optical axis Zf of the fog lamp part 8a and the optical axis Zc of the cornering lamp part 8b are jointly tilted and adjusted without damaging relative position relations or changing an intersectional angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lamp having a structure in which a plurality of reflectors are arranged in one lamp housing and which functions as a plurality of kinds of lamps.

[0002]

2. Description of the Related Art Various kinds of lamps are mounted on an automobile and fulfill their respective functions. FIG. 3 is a horizontal cross-sectional view showing a conventional example of an automotive lamp in which a reflector and a light source bulb for a fog lamp and a reflector and a light source bulb for a cornering lamp are arranged in a single lamp housing. A front lens 2 is fixed to cover a front opening of a lamp housing 1, and a main constituent member of a fog lamp 3 and a main constituent member of a cornering lamp 4 are arranged in a lamp chamber surrounded by the lamp housing and the front lens. Has been done. Reference numeral 3a is a reflector of the fog lamp 3, which is in the shape of a paraboloid of rotation, is tiltably supported by a ball joint (not shown), and the tilt can be adjusted like 3a 'drawn by an imaginary line. This adjustment
This is done to adjust the direction of the optical axis Zf of the reflector. The light source bulb 3b is a light source bulb arranged near the focal point of the reflector 3a, and the light source bulb 3b is provided.
The socket 3c for mounting is fixedly mounted on the reflector 3a. Therefore, the socket 3c is movable with respect to the lamp housing 1. The light source bulb replacement opening is waterproof with a rubber cover 3d so that the socket 3c can move with respect to the lamp housing 1. On the other hand, 4 a is a reflector of the cornering lamp 4, which has a paraboloid of rotation and is fixedly attached to the lamp housing 1. The socket 4c for mounting and supporting the light source bulb 4b of the cornering lamp 4 has a structure which is fixedly attached to the lamp housing 1 and detachable. The optical axis Zc of the cone ring lamp 4 intersects the auxiliary coordinate axis Z ′ (horizontal axis in the vehicle body direction) shown at a predetermined angle θ,
Horizontally facing diagonally forward of the car body. The predetermined angle θ in this conventional example is 45 degrees.

[0003]

In the conventional example shown in FIG. 3, the optical axis Zf of the fog lamp 3 can be adjusted, and the optical axis Zc of the cornering lamp 4 has no adjusting mechanism. It is not impossible to provide an adjusting mechanism in the optical axis direction for the cornering lamp 4 as well, but the structure becomes complicated and the manufacturing cost increases, and it is difficult to adjust the optical axis direction by the cornering lamp alone. Especially, it is not easy to match the relationship with the fog lamp. FIG.
In the conventional example shown in (1), since only the optical axis Zf of the fog lamp is adjusted, there is a problem that the optical axis Zc of the cornering lamp is deviated. Fig. 4 shows that when the optical axes of both the fog lamp and the cornering lamp are properly adjusted, when the screen in front of the road is illuminated with the optical axis of the fog lamp facing horizontally toward the front of the vehicle, points of equal illuminance on the screen are connected. It is a chart showing the drawn light distribution pattern. The H axis shown in the drawing is a horizontal line on the screen, and the V axis is also a vertical line, and the optical axis Zf of the fog lamp described above intersects at the intersection of the two axes H and V.
L45 ° shown in the drawing indicates that the position is swung 45 ° to the left. Reference numeral 5 in the drawing denotes a hot zone of the fog lamp, which is formed near the intersection of both H and V axes.
That is, the light is emitted straight in the horizontal direction in front of the vehicle body.
Reference numeral 6 denotes a hot zone of the cornering lamp, which is in a state where the hot zone is illuminated horizontally in a diagonal direction of 45 degrees leftward from the front of the vehicle body. In the conventional example shown in FIG. 3 described above, since the mechanism for adjusting the optical axis direction Zf of the fog lamp 3 is provided, it is easy to adjust the hot zone 6 of the fog lamp to be located near the intersection of the H and V axes. The optical axis Zc of the cornering lamp 4
The direction of is not always appropriate due to manufacturing error of the components. FIG. 5 is a diagram illustrating a light distribution pattern shown to explain a problem in the conventional example, and illustrates a state where the hot zone of the fog lamp is properly adjusted and the hot zone of the cornering lamp is biased downward. There is. FIG. 6 is a light distribution pattern chart exemplifying a state where the hot zone of the fog lamp is properly adjusted and the hot zone of the cornering lamp is biased upward. Figure 7
FIG. 4 is a light distribution pattern chart exemplifying a state in which the hot zone of the fog lamp is properly adjusted and the hot zone of the cornering lamp is biased to the right (inward). FIG.
FIG. 4 is a light distribution pattern chart exemplifying a state in which the hot zone of the fog lamp is properly adjusted and the hot zone of the cornering lamp is biased to the left (outward). The present invention has been made in view of the above-mentioned circumstances, and in a vehicle lamp that includes a plurality of reflectors and functions as a plurality of types of lamps, without providing an optical axis adjusting function for each reflector, It is an object of the present invention to provide an automotive lamp in which the optical axis of the reflector can be set in the correct direction.

[0004]

[Means for Solving the Problems] The above purpose (simple structure,
In order to achieve a correct light distribution pattern), the vehicle lamp structure according to the present invention is a vehicle lamp in which a plurality of reflectors constituting a plurality of types of lamps are installed in the same lamp housing. With the lamp housing attached to the vehicle, the optical axis of one reflector is horizontally directed to the front of the vehicle body, and the other reflector is located rearward of the vehicle body with respect to the reflector. The optical axes of the two reflectors are oriented horizontally and obliquely forward of the vehicle body, and the one reflector and the other reflector are integrally formed.

[0005]

According to the above construction, the other reflector is relatively fixed to the one reflector in a state where the correct relationship is maintained. Therefore, one of the reflectors is provided with the optical axis adjusting mechanism. Correctly adjusting the optical axis of the other reflector automatically brings the optical axis of the other reflector into the correct state. Therefore, the two types of lamps configured by the two reflectors respectively form the correct light distribution pattern. Therefore, it is not necessary to provide an optical axis adjusting mechanism for each of the plurality of reflectors, and it is sufficient to provide one set of optical axis adjusting mechanisms for the integrally configured reflectors, so the structure is simple and the overall size of the lamp is small. ，
Light weight and high manufacturing cost.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to FIG. 1 and FIG.
An embodiment of the present invention will be described. FIG. 1 is a plan view showing one embodiment of a vehicle lamp according to the present invention, which is cut along a plane including an optical axis of a fog lamp and an optical axis of a cornering lamp. For convenience of reading, FIG. The cut surfaces are hatched, and the cut surfaces of other members are not hatched. Reference numeral 7 denotes a lamp housing, a front lens 2 is attached to cover a front opening of the lamp housing, and a reflector 8 is arranged in a lamp chamber surrounded by the both. In the above-described reflector 8, a fog lamp portion 8a that functions as a reflector for a fog lamp and a cornering lamp portion 8b that functions as a reflector for a cornering lamp are integrally formed of a synthetic resin material, and three brackets are integrally formed. Has been done.
The cross section of FIG. 1 shows two of the above three brackets.
Individual pieces, 8c and 8d, appear. The bracket 8c is
It is supported so as to be tiltable with respect to the lamp housing 7 via a ball joint 9, and the bracket 8d is supported so as to be adjustable in the vertical direction in the figure via a screw mounting 10 and an adjusting screw 11. The fog lamp portion 8a of the reflector 8 has a paraboloid of revolution and has an optical axis Zf.
Is horizontal toward the front of the vehicle. The fog lamp light source bulb 12 is located in the vicinity of the focal point Ff on the optical axis Zf, and is arranged in the optical axis Zf direction. Behind it, the lamp housing rear opening for cap replacement and the cap 7 are provided.
a is provided. On the other hand, the cornering lamp portion 8b of the reflector 8 also has a paraboloid of revolution, and its optical axis Zc is an angle .theta. With respect to the auxiliary coordinate axis Z'parallel to the optical axis Zf.
Cross at. Since the optical axis Zf and the auxiliary coordinate axis Z'parallel to this are directed toward the front of the vehicle body, the optical axis Zf
c is swinging leftward from the front of the vehicle by an angle θ. The angle θ is set to 45 degrees in this embodiment. The cornering ramp portion 8b of the reflector 8 is disposed closer to the rear side of the vehicle body (lower side in FIG. 1) than the fog lamp portion 8a. The cornering lamp light source bulb 13 is positioned at the focal point Fc of the cornering lamp portion 8b of the reflector 8 so that the auxiliary coordinate axis Z '.
The lamp housing is provided with a rear opening and a cap 7b for replacing the bulb. By arranging the two light source bulbs 12 and 13 in the front-rear direction of the vehicle body and arranging the detachable caps 7a and 7b behind them, the light source bulbs can be detached and replaced quickly and easily. , Maintainability is good, so the product value is high. FIG. 2 is a front view of the exterior of an automotive lamp according to the embodiment, which is shown in the horizontal section of FIG. In FIG. 2, only the outer peripheral contour of the front lens 2 forms a contour line that appears in appearance, and all other components are represented by hidden lines (broken lines) or symbols. The reflector 8 described above is
It is supported at three points by the screw mountings 10 and 10 'and the ball joint 9. The structure of these components is as described above for FIG. However, although the screw mounting 10 'is not shown in FIG. 1, the reflector 8 is adjustably supported by the same structure as the screw mounting 10.

As can be easily understood from the configuration shown in FIG. 1, since the reflector fog lamp portion 8a and the cornering lamp portion 8b are integrally formed, the optical axes Zf and Zc of the respective constituent portions are mutually different. Since the relative position of is always kept constant, it is not necessary to individually and independently adjust the optical axes of the fog lamp portion 8a and the cornering lamp portion 8b. The optical axis Zf and the optical axis Zc are adjusted while always maintaining a constant crossing angle θ (45 degrees). Therefore,
For example, if the optical axis Zf is made horizontal, the optical axis Zc will also be automatically and forcibly made horizontal. Further, when the optical axis Zf is directed to the front side of the front of the vehicle body, the optical axis Zc is automatically and forcibly swung laterally by the angle θ toward the diagonal front. Due to such an action, the optical axis adjusting mechanism (the ball joint 9 and the screw mounting 10) is provided for each of the fog lamp and the cornering lamp.
Since there is no need to provide a lamp and an adjusting screw 11), it is sufficient to provide one set of optical axis adjusting mechanism for a lamp (device shown in FIG. 1) in which a fog lamp and a cornering lamp are combined. The structure is simple, compact, lightweight, and inexpensive, and the optical axis adjustment operation can be performed easily and quickly, resulting in good maintainability.

[0008]

When the present invention is applied, the other reflector is relatively fixed to one reflector while maintaining a correct relationship. Therefore, one reflector is provided with an optical axis adjusting mechanism. When the optical axis of the one reflector is adjusted correctly, the optical axis of the other reflector automatically becomes the correct state. Therefore, the two types of lamps configured by the two reflectors respectively form the correct light distribution pattern. Therefore, it is not necessary to provide an optical axis adjusting mechanism for each of the plurality of reflectors,
Since it is sufficient to provide one set of the optical axis adjusting mechanism for the integrally configured reflector, the structure is simple, and the size and weight of the lamp as a whole are reduced, and the manufacturing cost is relatively high.

[Brief description of drawings]

FIG. 1 shows an embodiment of an automotive lamp according to the present invention,
It is a plan view cut by a plane including the optical axis of the fog lamp and the optical axis of the cornering lamp, and for convenience of reading, the cut surface of the reflector is hatched and the cut surfaces of other members are not hatched. I am doing it.

FIG. 2 is a front view showing the exterior of an automotive lamp according to an embodiment of which the horizontal cross section is shown in FIG. 1 above.

FIG. 3 is a horizontal cross-sectional view showing a conventional example of an automotive lamp in which a reflector and a light source bulb for a fog lamp and a reflector and a light source bulb for a cornering lamp are arranged in a single lamp housing.

[Fig. 4] When both the fog lamps and the cornering lamps are properly adjusted in optical axis, when the screen in front of the road is illuminated with the optical axis of the fog lamp horizontally directed toward the front of the vehicle, points of equal illuminance on the screen are connected. It is a chart showing the light distribution pattern drawn by.

FIG. 5 is a diagram illustrating a light distribution pattern shown to explain a defect in a conventional example, illustrating a state in which a hot zone of a fog lamp is correctly adjusted and a hot zone of a cornering lamp is biased downward. ing.

FIG. 6 is a light distribution pattern chart exemplifying a state in which the hot zone of the fog lamp is properly adjusted and the hot zone of the cornering lamp is biased upward.

FIG. 7 is a light distribution pattern chart exemplifying a state in which the hot zone of the fog lamp is correctly adjusted and the hot zone of the cornering lamp is biased to the right (inward).

FIG. 8 is a light distribution pattern chart exemplifying a state in which the hot zone of the fog lamp is properly adjusted and the hot zone of the cornering lamp is biased to the left (outward).

[Explanation of symbols]

1 ... Lamp housing, 2 ... Front lens, 3 ... Fog lamp, 3a ... Fog lamp reflector, 3a '... Tilt reflector, 3b ... Fog lamp light source lamp, 3c ... Bulb socket, 3d ... Rubber cover, 4
... Cornering lamp, 4a ... Cornering lamp reflector, 4b ... Cornering lamp light source bulb, 4
c ... socket of bulb, 5 ... hot zone of fog lamp, 6 ... hot zone of cornering lamp, 7 ... lamp housing, 7a ... cap, 8 ... reflector formed by applying the present invention, 8a ... fog lamp portion of reflector, 8b ... Cornering lamp part of the reflector, 8c ...
Bracket for ball joint, 8d ... Bracket for screw mounting, 9 ... Ball joint, 10, 10 '... Screw mounting, 11 ... Adjusting screw, 12 ... Light source bulb for fog lamp, 13 ... Light source bulb for cornering lamp.

Claims (1)

[Claims] 1. An automobile lamp in which a plurality of reflectors constituting a plurality of types of lamps are installed in the same lamp housing, wherein the lamp housing is mounted on an automobile,
The optical axis of one reflector is directed horizontally toward the front of the vehicle body, the other reflector is located closer to the rear of the vehicle body than the above reflector, and the optical axis of the other reflector is horizontally oriented to the vehicle body. An automotive lamp, which is directed obliquely forward, and in which the one reflector and the other reflector are integrally formed.