JP3158882B2 - Automotive lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a single light room in the same lighting room.
The first reflector and the cornering lamp that make up the lamp
The present invention relates to an automotive lamp in which a second reflector is arranged .

[0002]

2. Description of the Related Art Various types of lamps are mounted on an automobile and fulfill their roles. FIG. 3 is a horizontal 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 the lamp housing 1, and main components of the fog lamp 3 and the cornering lamp 4 are arranged in a lamp room surrounded by the lamp housing and the front lens. Have been. Reference numeral 3a denotes a reflector of the fog lamp 3, which is a paraboloid of revolution, is supported by a ball joint (not shown) so as to be tiltable, and can be tilted and adjusted as indicated by a virtual line 3a '. This adjustment
This is performed 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.
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 waterproofed by a rubber cover 3d so that the socket 3c can move with respect to the lamp housing 1. On the other hand, 4a is a reflector of the cornering lamp 4, which is in the form of a paraboloid of revolution 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 is fixedly attached to the lamp housing 1 and is detachable. The optical axis Zc of the cone ring lamp 4 intersects the illustrated auxiliary coordinate axis Z ′ (horizontal axis in the vehicle body direction) at a predetermined angle θ.
It is facing diagonally forward of the body horizontally. The predetermined angle θ in the conventional example is 45 degrees.

[0003]

In the prior art shown in FIG. 3, the optical axis Zf of the fog lamp 3 is adjustable, and the optical axis Zc of the cornering lamp 4 is not provided with an adjusting mechanism. Although it is not impossible to provide the cornering lamp 4 with an optical axis direction adjusting mechanism, the structure becomes complicated and the manufacturing cost increases. In addition, it is difficult to adjust the optical axis direction by using the cornering lamp alone. In particular, 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 out of order. FIG. 4 shows a state in which both the fog lamp and the cornering lamp are correctly adjusted in the optical axis, and the light axis of the fog lamp is directed horizontally toward the front of the vehicle body to illuminate the screen ahead on the road. It is a chart showing the drawn light distribution pattern. The illustrated H axis is a horizontal line on the screen, and the V axis is a vertical line. The optical axis Zf of the fog lamp described above intersects the intersection of the two axes H and V.
L45 ° shown in the figure represents a position deflected by 45 degrees to the left. 5 is a hot zone of the fog lamp, which is formed near the intersection of the H and V axes.
That is, the light is emitted straight in the horizontal direction in front of the vehicle body.
The reference numeral 6 denotes a hot zone of a cornering lamp, which indicates a state in which light is horizontally radiated in an oblique direction of 45 degrees to the left from the front of the vehicle body. In the conventional example shown in FIG. 3 described above, since a 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 near the intersection of the H and V axes. The optical axis Zc of the cornering lamp 4
Is not always appropriate due to manufacturing errors 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 in which the hot zone of the fog lamp is correctly adjusted and the hot zone of the cornering lamp is biased downward. I have. FIG. 6 is a light distribution pattern chart illustrating a state in which the hot zone of the fog lamp is correctly adjusted and the hot zone of the cornering lamp is deflected upward. FIG.
FIG. 4 is a light distribution pattern chart illustrating a state in which the hot zone of the fog lamp is correctly adjusted and the hot zone of the cornering lamp is biased rightward (inward). FIG.
FIG. 5 is a light distribution pattern chart illustrating 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 left (toward the outside). that's all
The light of the reflector 4a of the cornering lamp 4
The axis Zc is the optical axis Zf of the reflector 3a of the fog lamp 3.
(Distance Auxiliary Grounding Axis Z ')
Because the reflector 3a of the fog lamp 3 and the corner
The relative position of the lamp 4 with the reflector 4a is correct.
Otherwise, hot zone 5 of fog light 3 and corner
The gap between the lamp 4 and the hot zone 6 appears remarkably.
You. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a first reflector which forms one lamp in the same lamp room.
And the second reflector forming the cornering lamp
An object of the present invention is to provide an automotive lamp in which the optical axes of the respective reflectors can be set in the correct direction without providing the optical axis adjustment function in each of the arranged automotive lamps.

[0004]

Means for Solving the Problems The above object (simplified structure,
In order to achieve a correct light distribution pattern), the automotive lamp configuration according to the present invention uses a lamp housing that defines the same lamp chamber.
And the front lens, and one lens disposed in the same lamp room.
Reflector that constitutes one lamp and a cornering la
A second reflector forming a pump, and the first reflector
Optical axis adjusting mechanism for adjusting the optical axis of the second reflector
When, in the automotive lamp provided with a, in a state in which the lamp housing is installed in the vehicle, the optical axis of the first reflector faces the front of the vehicle body horizontally, the second reflector, said first reflector It is located rear of the vehicle body nearer, horizontally optical axis of said second reflector is oriented obliquely forward of the vehicle body, and, in the first reflector
Said second reflector are integrally formed, the light
The shaft adjustment mechanism is configured to be integrated with the first reflector
A set of optical axis adjustment mechanisms with respect to the second reflector;
That, characterized in that.

[0005]

According to the above arrangement, the first reflector is
When the second reflector, because it is relatively fixed while maintaining the correct relationship, properly adjusting the optical axis of the first reflector is provided an optical axis adjusting mechanism to the first reflector, the
The optical axis of the two reflectors is automatically in the correct state. Therefore, one lamp constituted by the first reflector
And a corner line constituted by a second reflector
Each of the lamps forms a correct light distribution pattern.
In particular, the optical axis of the second reflector is the optical axis of the first reflector.
Because it is facing obliquely forward with respect to the first reflector and
If the relative position with the second reflector is incorrect, one
Light Distribution Patterns and Lighting Patterns of Cornering Lamps
It is most suitable for automotive lamps where the deviation from
You. Further, there is no need to provide an optical axis adjusting mechanism for each of the first reflector and the second reflector, and the first and second reflectors are integrally formed .
It is sufficient to provide one set of optical axis adjustment mechanisms for the first reflector and the second reflector, so that the structure is simple, and the whole lamp is small and lightweight, and the manufacturing cost is low .

[0006]

Next, referring to FIGS. 1 and 2 sequentially,
An embodiment of the present invention will be described. FIG. 1 is a plan view showing an embodiment of a vehicle lighting device according to the present invention, which is cut by a plane including an optical axis of a fog lamp and an optical axis of a cornering lamp. The cut surface is hatched, and the cut surfaces of other members are omitted. Reference numeral 7 denotes a lamp housing, and a front lens 2 is mounted so as to cover a front opening of the lamp housing, and a reflector 8 is disposed in a lamp room surrounded by the both. In the reflector 8, a fog lamp portion 8a functioning as a reflector of a fog lamp and a cornering lamp portion 8b functioning as a reflector of a cornering lamp are integrally formed of a synthetic resin material, and three brackets are integrally formed. Have been.
The cross section of FIG. 1 shows two of the three brackets.
8c and 8d appear. The bracket 8c is
The lamp housing 7 is tiltably supported via a ball joint 9, and the bracket 8 d is supported via a screw mounting 10 and an adjustment screw 11 so as to be adjustable in the vertical direction in the figure. The fog lamp portion 8a of the reflector 8 has a paraboloid of revolution, and its optical axis Zf
Is horizontal toward the front of the vehicle. A light source bulb 12 for a fog lamp is arranged in the direction of the optical axis Zf so as to be located near a focal point Ff on the optical axis Zf.
a is provided. On the other hand, the cornering lamp portion 8b of the reflector 8 also forms a paraboloid of revolution, and its optical axis Zc has an angle θ with respect to the auxiliary coordinate axis Z ′ parallel to the optical axis Zf.
Intersect at Since the optical axis Zf and the auxiliary coordinate axis Z 'parallel to the optical axis Zf face forward of the vehicle body, the optical axis Zf
“c” swings to the left by an angle θ from the front of the vehicle body. The angle θ is set to 45 degrees in the present embodiment. The cornering lamp section 8b of the reflector 8 is disposed closer to the rear of the vehicle (lower in FIG. 1) than the fog lamp section 8a. When the light source bulb 13 for the cornering lamp is positioned at the focal point Fc of the cornering lamp section 8b of the reflector 8, the auxiliary coordinate axis Z '
A rear opening of the lamp housing for bulb replacement and a cap 7b are provided at the rear of the lamp housing. By arranging the two light source bulbs 12 and 13 in the front-rear direction of the vehicle body and disposing the detachable caps 7a and 7b at the rear of the two light source bulbs 12, the light source bulb can be quickly and easily replaced. , Because of its good maintainability, it will be worth the price. FIG. 2 is an external front view illustrating an automotive lamp according to the embodiment whose horizontal cross section is shown in FIG. 1 described above. In FIG. 2, only the outer peripheral contour of the front lens 2 forms an outer shape 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, 10 'and the ball joint 9. The structure of these components is as described above with reference to FIG. However, although the screw mounting 10 'did not appear in FIG. 1, the reflector 8 is adjustably supported by the same configuration as the screw mounting 10.

As can be easily understood from the configuration shown in FIG. 1, since the fog lamp portion 8a and the cornering lamp portion 8b of the reflector are integrally formed, the optical axes Zf and Zc of the respective components are mutually reciprocal. Is always kept constant, it is not necessary to adjust the optical axis of each of the fog lamp portion 8a and the cornering lamp portion 8b individually and independently. The optical axis Zf and the optical axis Zc are adjusted while always maintaining a constant intersection angle θ (45 degrees). Therefore,
For example, if the optical axis Zf is made horizontal, the optical axis Zc is also automatically and forcibly made horizontal. When the optical axis Zf is directed toward the front of the vehicle body, the optical axis Zc automatically and forcibly swings obliquely forward to the side by the angle θ. With these effects, the riff
The fog lamp unit 8a of the rectifier 8
Fog lamp and cornering lamp of reflector 8
8b is a cornering lamp composed of
Each forms a correct light distribution pattern. In particular, the reflex
The optical axis Zc of the cornering lamp portion 8b of the
The optical axis Zf of the fog lamp portion 8a of the
Z ′), it is obliquely forward by the angle θ with respect to
Fog lamp part 8a of reflector 8 and cornering lamp
If the position relative to the part 8b is not correct, the fog lamp
Hot zone (light distribution pattern) and cornering lamp
Shift from the hot zone (light distribution pattern)
Ideal for automotive lighting. Further, there is no need to provide an optical axis adjustment mechanism (ball joint 9, screw mounting 10, and adjustment screw 11) for each of the fog lamp and the cornering lamp, and a lamp (see FIG. 1) in which the fog lamp and the cornering lamp are combined. It is sufficient to provide a set of optical axis adjustment mechanisms for the optical device, so the overall structure is simple, small, lightweight and inexpensive, and the optical axis adjustment operation can be performed easily and quickly. Good maintenance. In this example,
The fog lamp portion 8a of the reflector 8 is
A first reflector constituting a pump, and
The cornering lamp section 8b includes a cornering lamp.
This is a second reflector to be formed.

[0008]

According to the present invention, since the second reflector is relatively fixed with respect to the first reflector while maintaining a correct relationship, the first reflector is provided with an optical axis adjusting mechanism. If the optical axis of the first reflector is correctly adjusted, the optical axis of the second reflector will automatically be in the correct state. Therefore, the one formed by the first reflector
Lamps and the second reflector
Each of the cornering lamps forms a correct light distribution pattern. In particular, the optical axis of the second reflector is
The first riff is directed obliquely forward with respect to the optical axis of the
Incorrect position of the relationship between the reflector and the second reflector
And the light distribution pattern of one lamp and the cornering lamp
It is most suitable for automotive lamps where the deviation from the light distribution pattern is noticeable.
Suitable. Further, it is not necessary to provide an optical axis adjusting mechanism for each of the first reflector and the second reflector, and it is sufficient to provide a single optical axis adjusting mechanism for the first reflector and the second reflector which are integrally formed. Therefore, the overall size of the lamp is small and light, and the manufacturing cost is low .

[Brief description of the drawings]

FIG. 1 shows an embodiment of an automotive lamp according to the present invention,
It is the top view cut and drawn by the surface containing the optical axis of the fog lamp and the optical axis of the cornering lamp.For convenience of reading, hatching is applied to the cut surface of the reflector, and hatching of the cut surface of other members is omitted. I have.

FIG. 2 is an external front view illustrating an automotive lamp according to the embodiment, the horizontal section of which is shown in FIG. 1 described 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 lamp and the cornering lamp are properly adjusted in optical axis, when the optical axis of the fog lamp is directed horizontally toward the front of the vehicle body and irradiates a screen in front of the road, points of equal illuminance on the screen are connected. 6 is a table showing a light distribution pattern drawn in FIG.

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

FIG. 6 is a light distribution pattern chart illustrating a state in which the hot zone of the fog lamp is correctly adjusted and the hot zone of the cornering lamp is deflected upward.

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

FIG. 8 is a light distribution pattern chart illustrating 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 left (toward the outside).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp housing, 2 ... Front lens, 3 ... Fog lamp, 3a ... Fog lamp reflector, 3a '... Inclining 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: bulb socket, 5: hot zone of fog lamp, 6: hot zone of cornering lamp, 7: lamp housing, 7a: cap, 8: reflector configured by applying the present invention, 8a: fog lamp portion of reflector, 8b ... Cornering lamp part of 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)

(57) [Claims] 1. A lamp housing defining the same lamp chamber.
And a front lens and a second lamp constituting one lamp disposed in the same lamp chamber.
1 reflector and 2nd reflector forming a cornering lamp
Adjust the optical axis of the reflector, the first reflector, and the second reflector
An optical axis adjustment mechanism for, in an automotive lamp provided with a, in a state in which the lamp housing is installed in the vehicle,
The optical axis of the first reflector faces the front of the vehicle body horizontally, the second reflector is located on the rear of the vehicle body nearer the first reflector, the optical axis of the second reflector is horizontal, The first reflector and the second reflector are formed integrally with each other, and the optical axis adjustment mechanism is formed integrally with the first reflector.
A set of optical axis adjusters for the reflector and the second reflector
An automotive lamp characterized by being structured .