JP2003123518A - Multi-lens system projector type lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-lens system projector type lamp capable of forming illuminating beams for plural purposes. SOLUTION: One bulb 8 is provided in a lamp compartment 3 formed by a lamp housing 2 and an outer lens 4, illuminating beams reflected by a reflector 7 having a first focus in the vicinity of the light source center of the bulb 8 permeate plural inner lenses 10, 11 and 12. Part of the plural inner lenses 10, 11 and 12 are used for a headlamp to illuminate the frontward direction of a vehicle, and the other part of them are used for an auxiliary lamp to illuminate the further outside of the vehicle than the illuminating beams for the front head lamp.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb provided in a lamp chamber formed by a lamp housing and an outer lens, a reflector having a first focal point near the center of the light source of the bulb, and the reflector. The present invention relates to a multi-lens projector type lamp including a plurality of inner lenses that transmit the reflected illumination light flux.

[0002]

2. Description of the Related Art Conventionally, a bulb is provided in a lamp chamber formed by a lamp housing and an outer lens, and a plurality of inner light beams are reflected by a reflector whose first focal point is near the light source center of the bulb. There is known a multi-lens projector-type lamp that forms a predetermined light distribution pattern by transmitting light through a lens (for example, Patent Document 3).
No. 005954).

[0003]

By the way, in the multi-lens projector type lamp constructed as described above, the light distribution pattern satisfying the function of the headlight is formed by a plurality of inner lenses. However, there is a problem that the efficiency is low in spite of the expensive lens.

In order to solve the above problems, it is an object of the present invention to provide a multi-lens projector type lamp which is capable of forming an illumination light beam for a plurality of purposes with a single bulb.

It is another object of the present invention to provide a multi-lens projector type lamp which can form an illumination light beam for an auxiliary lamp as needed with a minimum required drive system.

[0006]

In order to achieve the object, a multi-lens projector type lamp according to claim 1 is provided.
One bulb provided in the lamp chamber formed by the lamp housing and the outer lens, a reflector having a first focal point near the center of the light source of the bulb, and a plurality of inner bodies that transmit the illumination light flux reflected by the reflector. In the multi-lens projector type lighting fixture including a lens, the plurality of inner lenses are used as a headlight for illuminating a part of the inner lens in the front direction of the vehicle body, and a part of the other part from a headlamp illumination light flux. Is also used as an auxiliary light for illuminating the outside of the vehicle body. In the multi-lens projector type lighting device according to claim 2, a part of the inner lens for the auxiliary light is used for a first auxiliary light that illuminates an oblique outside toward the front of the vehicle body, and the other part. Is used as a second auxiliary light that illuminates the side of the vehicle body.

In the multi-lens projector type lamp according to a third aspect of the present invention, a movable shade is provided on at least the back surface of the inner lens for the auxiliary lamp among the plurality of inner lenses, and the illumination light flux for the auxiliary lamp is provided. It is a gist to drive the movable shade to illuminate the illumination light flux reflected by the reflector as an auxiliary light when the condition is necessary to emit the light.

According to another aspect of the present invention, in the multi-lens projector type lighting device, the movable shade moves the illumination light flux reflected by the reflector before the illumination light flux for the auxiliary light. The main idea is to illuminate the lights.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a multi-lens projector type lamp of the present invention will be described with reference to the drawings.

1 to 9 show an embodiment of a multi-lens projector type lamp according to the present invention.

1 to 3, a multi-lens projector type lighting device 1 includes a lamp housing 2 having a front opening 2a and a lamp housing 2 so as to form a lamp chamber 3 by closing the front opening 2a. Outer lens held 4
And a cap 5 for closing a light source replacement opening 2c formed on the rear wall 2b of the lamp housing 2 (in this case, a substantially vertical wall surface portion of the rear wall 2b), and tilting for adjusting the optical axis in the lamp chamber 3. And a lens unit 6 that can be provided.

The outer lens 4 is inclined forward and downward so as to be separated from the rear wall 2b toward the lower side of the vehicle body, and toward the rear so as to approach the rear wall 2b side toward the outside of the vehicle body (right side in FIG. 2). Is inclined.

The lens unit 6 includes a lamp housing 2
Optical axis adjustment unit (not shown because it is known)
A reflector 7 provided in the lamp chamber 3 via a lamp, a bulb 8 held by the reflector 7, a plurality of inner lenses 10 provided on the reflector 7 via a bracket 9,
It is provided with 11, 12 and shades 13, 14, 15 provided on the back surface side of the inner lenses 10, 11, 12.

The reflector 7 is wholly recessed toward the rear wall 2b with a focal point (first focal point) near the light emitting portion (light source center) 8a of the bulb 8, as shown in FIG. 1 (B). A valve through hole 7a is formed at a substantially central vertex. In the reflection parts 7b to 7g, for example, the reflection parts 7b to 7e are used for headlight illumination, and the reflection parts 7f and 7g are used for auxiliary lights. In addition, for example, when the multi-lens projector type lighting device 1 is arranged on the right side of the vehicle body (driver's reference) and the vehicle travels on the left side of the road, as shown in FIG.
In contrast to the illumination light flux Q1 for the headlight that illuminates the front direction of the vehicle body reflected by b to 7g, the illumination light flux Q2 reflected by the reflection section 7f illuminates the oblique outer side near the front of the vehicle body. The illumination luminous flux Q3 reflected by the reflecting portion 7g is used as a second auxiliary lamp for illuminating the side of the vehicle body (or vice versa). In addition, the multi-lens projector type lamp 1
Is arranged on the left side of the vehicle body (driver's reference) and the vehicle is traveling on the left side of the road, the roles of the reflecting portion 7f and the reflecting portion 7g are reversed.

As shown in FIG. 3 (A), the bracket 9 is provided with steps (three steps in this case) so as to have vertical surfaces 9a to 9c located forward as it goes downward. The lengths of the horizontal planes 9d to 9f extending in the front-rear direction are arbitrary depending on the vertical tilt angle of the outer lens 4 and the lens shape. Further, as shown in FIG. 2, the vertical surfaces 9a to 9c are substantially vertical in this embodiment and extend perpendicularly to the optical axis O in the width direction, but the outer lens 4 is not provided.
A step may be provided according to the inclination in the width direction of the.

As the inner lens 10, as shown in FIG. 3B, a pair of left and right aspherical lenses 10a and 10b are provided on a vertical surface 9a. Aspherical lens 10a
Is opposed to the reflecting portion 7b, and the aspherical lens 10b is opposed to the reflecting portion 7d.

As the inner lens 11, a pair of left and right aspherical lenses 11a and 11b are provided on the vertical surface 9b. The aspherical lens 11a faces the reflecting portion 7d, and the aspherical lens 11b faces the reflecting portion 7e.

As the inner lens 12, a pair of left and right aspherical lenses 12a and 12b are provided on the vertical surface 9c. The aspherical lens 12a faces the reflecting portion 7f, and the aspherical lens 12b faces the reflecting portion 7g.

At this time, the aspherical lenses 10a and 10b and the aspherical lenses 11a and 11b are used for a headlight, the aspherical lens 12a is used for a first auxiliary light, and the aspherical lens 12b is a second light. It is used for auxiliary lights.

The shades 13, 14, 15 are respectively shade main bodies 13a, 13b, 14a, facing the aspherical lenses 10a, 10b, 11a, 11b, 12a, 12b.
14b, 15a, 15b.

Shade bodies 13a, 13b, 14a, 1
4b is used to form a cut line in the light distribution pattern of the illumination light beam Q1. Shade body 15a
Means that the illumination light flux reflected by the reflecting portion 7f is always aspherical lens 14a in order to form the illumination light flux Q2 as necessary.
Shut off so that you do not go to. The shade body 15b is
In order to form the illumination light beam Q3 as necessary, the illumination light beam reflected by the reflecting portion 7g is always blocked so as not to go to the aspherical lens 14a.

5 and 6 show the shade main bodies 15a and 1a.
An example of the structure of 5b is shown.

In FIG. 5, the base 21 fixed to the bracket 9 has a rectangular opening 21 (the opening shape is not particularly limited in consideration of the cut line) at a substantially central portion thereof.
a is formed. Further, an intermediate plate (not shown) and an auxiliary ground plate (not shown) are sequentially attached to the shafts 21b, 21c, 21d, and 21e provided on the back surface side of the base 21 at a predetermined interval. And the blade chamber of the first blade group is formed between them and the blade chamber of the second blade group is formed between the intermediate plate and the auxiliary ground plate. Further, the base 21 has two arc-shaped long holes 21 on the left side of the opening 21a.
f and 21g are formed, and a buffer member (not shown) is attached to each of both ends in the longitudinal direction of the f and 21g, and serves as a stopper as will be understood from the description below. Further, two moving magnet type motors 22 and 23 are attached to the front surface side of the base 21 by means not shown with a slight gap provided between the two. The moving magnet type motors 22 and 23 are composed of permanent magnet rotors 22a,
The drive pins 22b and 23b that rotate integrally with 23a are
It penetrates through the long holes 21f and 21g of the base 21 and projects to the back side.

The first blade group includes two arms 24 and 25 rotatably attached to shafts 21h and 21i provided on the rear surface side of the base 21, and a connecting shaft member toward their tip ends. Although it is composed of three blades that are pivotally supported in order through these, since the pivotal support structure is well known, only the slit forming blade 26 is shown, and the other blades are not shown. In addition, the long hole 2 formed in one arm 24
The drive pin 22b described above is fitted to 4a. On the other hand, the second blade group is pivotally supported in order toward the tips of the two arms 27 and 28 rotatably attached to the shafts 21j and 21k provided on the back side of the base 21. Although it is composed of three blades, only the slit forming blade 29 is shown in the same manner as in the case of the first blade group. The drive pin 23b is fitted in the elongated hole 27a formed in the arm 27.

In such a state shown in FIG. 5, the stator coil of the moving magnet type motor 22 is energized in the forward direction by a switch (not shown). Therefore, the rotor 22a is rotated clockwise in the drawing, and the drive pin 22b rotates the arm 24 in the same direction, so that the three blades of the first blade group increase the mutual overlap. It moves downward and opens the opening 21a by the slit forming edge of the slit forming blade 26. After that, the moving magnet type motor 23
Since the stator coil is also energized in the forward direction, the rotor 23a is rotated in the clockwise direction, and the drive pin 23b rotates the arm 27 in the same direction. The three blades move downward while reducing the mutual overlap, and close the opening 21a by the slit forming edge of the slit forming blade 29.

In the first blade group, after the slit forming edge of the slit forming blade 26 has passed the lower side of the opening portion 21a, the drive pin 22b is attached to the upper end portion of the long hole 21f, and a buffer member (not shown) is attached. Abut and stop. Also,
After the slit forming edge of the slit forming blade 29 has passed the lower side of the opening 21a, the second blade group contacts the drive pin 23b with a buffer member (not shown) attached to the upper end of the elongated hole 21g. Stop. Then, in that state, the three blades of the first blade group are superposed and stored in the lower position of the opening 21a, and the three blades of the second blade group are expanded to cover the opening 21a. .

After that, the moving magnet type motor 2
When the forward power supply to the stator coils 2 and 23 is cut off, a series of operations is completed as shown in FIG. In addition, driving in the opposite direction to the above is performed by the next energization.

As the above-mentioned switch, for example,
Steering angle of the steering wheel (may be used in combination with speed), turn signal switch, etc. For example, when so-called curve traveling is detected by the steering angle of the steering wheel, the opening 21a of the shade body 15a for the first auxiliary light is opened and the light flux reflected by the reflecting portion 7f is transmitted through the aspherical lens 12a and illuminated. When the so-called right / left turn is detected when the turn signal switch is turned on, the opening 21a of the shade body 15b for the second auxiliary light is opened and the reflector 7 is illuminated.
The light flux reflected by g passes through the aspherical lens 12b and is illuminated as an illumination light flux Q3.

At this time, the respective illumination light beams Q2 and Q3 may be direction-controlled by the reflecting portions 7f and 7g, or may be set by the shapes and installation angles of the aspherical lenses 12a and 12b. In addition, a part of the opening 21a is always in the open state, and by setting the above-described reflecting portions 7f and 7g or the aspherical lenses 12a and 12b, the exposure from the opening portion in the constantly open state is an illumination light flux for the headlamp. It can also be used as part of Q1.

FIG. 7 shows an illumination luminous flux Q1 for a headlamp formed by aspherical lenses 10a, 10b, 11a and 11b when a D2S type bulb 8 is used for the multi-lens projector type lamp 1. A light distribution pattern is shown. Also, FIG.
Shows a light distribution pattern of the illumination light flux Q2 for the first auxiliary lamp formed by the aspherical lens 12a when the multi-lens projector type lighting device 1 is installed on the right side of the vehicle body. Furthermore, FIG.
Shows a light distribution pattern of the illumination light flux Q2 for the first auxiliary lamp formed by the aspherical lens 12b when the multi-lens projector type lighting device 1 is installed on the right side of the vehicle body.

By the way, in the above embodiment, the valve 8
Although the light distribution pattern when using the D2S type is shown in Fig. 7, even when the H1 type is used for the bulb 8, the size and light amount of the image are different, but the size relation and symmetry of the image described above are different. It is needless to say that the functions of the optical system such as relations can be ensured to be the same, and it is only a category of design matter to consider the valve type together with the design of the lens and the like.

Further, in the above embodiment, a total of six aspherical lenses 10a, 10b, which are two rows in the left and right and three steps in the upper and lower rows, are provided.
11a, 11b, 12a, 12b, and the upper four aspherical lenses 10a, 10b, 11a, among them.
11b is allocated for headlights, the aspherical lens 12a is allocated for first auxiliary lights, and the aspherical lens 12b is allocated for second auxiliary lights. Rows, eg aspherical lenses 10a, 11
a and 12a are used for the headlight, the aspherical lens 10b is used for the first auxiliary light, and the aspherical lens 11 is used.
b, 12b are used for the second auxiliary light, and the combination is free.

Further, for example, as shown in FIG. 10, a total of seven aspherical lenses 31 are integrated with the lens base 30a.
a, 31b, 32a, 32b, 32c, 33a, 33b
And the three aspherical lenses 32a, 32b, 3 at the center stage, for example.
2c is used for headlights, the upper two aspherical lenses 31a, 31b are used for first auxiliary lights, the lower two aspherical lenses 33a, 33b are used for second auxiliary lights, and the like. The number and arrangement thereof are not limited to those in the above embodiment. Needless to say, even in the case of the arrangement shown in FIG. 10, the shade and the like described above are provided according to their roles.

Further, as shown in FIGS. 11 and 12,
Two upper aspherical lenses 31 for the first auxiliary light
a and 31b and the lower two aspherical lenses 33a and 33b for the second auxiliary light so as to form left and right independent light distribution patterns, and the multi-lens projector type lamp 1 is provided on each of the left and right sides of the vehicle body. It is also possible to compliment each other in the amount of light. The upper, lower, left and right roles for the first and second auxiliary lights may be reversed.

[0035]

As described above, in the multi-lens projector type lighting device according to claim 1, the plurality of inner lenses are used for a headlight for illuminating a part of the inner lenses in the front direction of the vehicle body. It is possible to form an illuminating light flux for multiple purposes by using the other part of the illuminating light flux for the auxiliary light that illuminates the outside of the vehicle body more than the illuminating light flux for the headlight.

In the multi-lens projector type lighting device according to the second aspect, a part of the inner lens for the auxiliary light is used as a first auxiliary light for illuminating obliquely outward toward the front of the vehicle body. However, a part of the other part is used for the second auxiliary light that illuminates the side of the vehicle body, so that a more detailed auxiliary light can be set.

In the multi-lens projector type lighting device according to a third aspect of the invention, a movable shade is provided on at least the back surface of the inner lens for the auxiliary lamp among the plurality of inner lenses, and the movable shade is used for the auxiliary lamp. When it is necessary to emit an illumination light beam, the movable shade is driven to illuminate the illumination light beam reflected by the reflector for an auxiliary light, so that an auxiliary lamp is used as necessary with a minimum necessary drive system. It is possible to form an illumination light flux for use.

In the multi-lens projector type lighting device according to a fourth aspect, the movable shade is an illumination reflected by the reflector under a condition other than a condition in which it is necessary to emit an illumination light beam for an auxiliary light. By illuminating the light flux for headlights, it is possible to effectively utilize the illumination light flux.

[Brief description of drawings]

FIG. 1 shows a multi-lens projector type lighting device according to a first embodiment of the present invention, (A) is a vertical cross-sectional view of the multi-lens projector type lighting device, and (B) is a front view of a reflector.

FIG. 2 is likewise a cross-sectional view of a multi-lens projector type lamp.

3A is a plan view of the lens unit, FIG.
(B) is a front view of the lens unit.

FIG. 4 is likewise an explanatory diagram of an illumination luminous flux.

FIG. 5 is likewise a front view of the shade body at the top dead center position.

FIG. 6 is likewise a front view of the shade main body at the bottom dead center position.

FIG. 7 is an explanatory diagram of a light distribution pattern for a headlight when a D2S type bulb is used.

FIG. 8 is an explanatory diagram of a light distribution pattern for the first auxiliary lamp when a D2S type bulb is used.

FIG. 9 is an explanatory diagram of a light distribution pattern for a second auxiliary lamp when a DS2 type bulb is used.

FIG. 10 is a front view of an aspherical lens unit showing a modified example of the multi-view projector type lighting device of the present invention.

FIG. 11 is an explanatory view of a light distribution pattern for the first auxiliary lamp in the case of a modification.

FIG. 12 is an explanatory view of a light distribution pattern for the second auxiliary lamp in the case of a modification.

[Explanation of symbols]

1 ... Multi-lens projector type lighting 2 ... Lamp housing 3 ... Light room 4 ... Outer lens 7 ... Reflector 8 ... Valve 10 ... Inner lens 11 ... Inner lens 12 ... Inner lens

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Claims (4)

[Claims] 1. A bulb provided in a lamp chamber formed by a lamp housing and an outer lens,
In a multi-lens projector type lamp including a reflector having a first focus near the light source center of the bulb, and a plurality of inner lenses that transmit the illumination light flux reflected by the reflector, the plurality of inner lenses are One part is used as a headlight for illuminating the front direction of the vehicle body, and the other part is used as an auxiliary light for illuminating the outside of the vehicle rather than the illumination light flux for the headlight. Eye projector light fixture. 2. The inner lens for the auxiliary light is used as a first auxiliary light for illuminating a part of the inner lens for an oblique outer side toward the front of the vehicle body, and another part for illuminating a lateral side of the vehicle body. The multi-lens projector type lamp according to claim 1, which is used for an auxiliary lamp. 3. A movable shade is provided on at least the back surface of the inner lens for the auxiliary lamp of the plurality of inner lenses, and the movable shade is provided under the condition that it is necessary to emit an illumination light flux for the auxiliary lamp. Is driven to illuminate the illumination light flux reflected by the reflector for an auxiliary lamp. 4. The movable shade illuminates an illumination light flux reflected by the reflector for a headlight under conditions other than a condition in which it is necessary to emit an illumination light flux for an auxiliary light. Item 3. The multi-lens projector type lamp according to Item 3.