JP4582733B2 - Vehicle lighting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular lamp, and particularly relates to a vehicular lamp for a signal used mainly for notifying other vehicles, pedestrians, etc. of the behavior of the vehicle, such as a tail lamp, a stop lamp, and a position lamp. Is.
[0002]
[Prior art]
FIG. 5 shows an example of the configuration of a conventional vehicle lamp 90 of this type, and a plurality of LED lamps 92 are arranged on a substrate 91 as a light source, for example, arranged in a matrix and corresponds to one LED lamp 92. Then, the lens 93 provided with one lens cut 93a is provided in the viewing direction of the vehicular lamp 90, and the light from each LED lamp 92 is diffused by each lens cut 93a to obtain light distribution characteristics. Met.
[0003]
[Problems to be solved by the invention]
In the vehicular lamp 90 for this type of signal, the light distribution characteristic is also important, but since the surface area is large, the aesthetics are also emphasized as a part of the design of the vehicle body. ing. However, the vehicular lamp 90 having the conventional configuration described above has a problem that the appearance is flat and uniform, particularly when lit, and it is difficult to produce an aesthetic appearance on the vehicle design. .
[0004]
[Means for Solving the Problems]
The present invention is a vehicle lamp comprising a minimal lamp, a composite reflector, and a lens as a specific means for solving the above-described conventional problems. The composite reflector is an elliptical surface such as a spheroid. an elliptical mirror one surface subjected to cutting out into a substantially rectangular shape in a longitudinal direction along Migihitsuji, there those that have been formed by connecting a plurality of strip-shaped elliptical mirror to substantially bowl shape, the elliptical mirror each said The minimal lamp has a first focal point, a long axis is inclined with respect to the main illumination direction of the vehicular lamp , has a second focal point in the vicinity of the back surface of the lens, and the second as the composite reflector By providing a vehicular lamp characterized in that a set of focal points forms a desired pattern in the vicinity of the back surface of the lens, a novel light emitting surface can be provided to solve the problem.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Below, this invention is demonstrated in detail based on embodiment shown in a figure. 1 and FIG. 2 shows a vehicular lamp according to the present invention. The vehicular lamp 1 is at least one of an LED lamp or a very small lamp that can be regarded as a point light source such as a subminiature incandescent bulb. One is used as a light source.
[0006]
In the actual state of the vehicular lamp 1, an LED lamp is often used as this kind of miniature lamp from the viewpoint of saving the trouble of replacement caused by disconnection. Therefore, even in this embodiment, the light source is an LED. The following description will be given assuming that the lamp 2 is used.
[0007]
FIG. 1 illustrates a basic configuration of a vehicular lamp 1 according to the present invention. For example, a plurality of LED lamps 2 are mounted on an appropriate substrate 3 such as a printed wiring board. The composite reflecting mirror 4 is attached, and in the illustrated cross section, one elliptical mirror 4a constituting the composite reflecting mirror 4 appears. A lens 5 is provided so as to cover the LED lamp 2 and the composite reflecting mirror 4.
[0008]
The elliptical mirror 4a has the first focal point f1 at the position of the LED lamp 2, and the long axis Y is inclined with respect to the main irradiation direction X of the vehicular lamp 1. Therefore, the elliptical long axis The second focal point f2 located on Y also moves sideways from the main irradiation direction X as shown in the figure, but at this time, the distance from the first focal point f1 is appropriately adjusted, The lens 5 is arranged in the vicinity of the back surface 5a.
[0009]
In addition, an appropriate lens cut 5b is applied to the back surface 5a side of the lens 5, reflected by the elliptical mirror 4a, and appropriate for the light from the LED lamp 2 that once converges to the second focal point f2. An irradiation angle is given. Further, the position of the lens 5 other than that where the lens cut 5b is applied is, for example, a position where no lens cut is provided, and direct light from the LED lamp 2 is emitted toward the main irradiation direction X. It is supposed to be possible.
[0010]
FIG. 2 is a perspective view showing the configuration of the composite reflecting mirror 4. As described above, the composite reflecting mirror 4 is constituted by a plurality of elliptical mirrors 4a. When the plurality of elliptical mirrors 4a are assembled, the elliptical mirror 4a is cut into a substantially strip shape from the elliptical surface such as a rotational elliptical surface along the long axis Y to form a single-sided elliptical mirror 4a. By connecting a plurality, the composite reflecting mirror 4 having a substantially bowl shape is formed.
[0011]
In addition, in the present invention, when the composite reflecting mirror 4 is formed, the set of the second focal points f2 of the elliptical mirrors 4a is adjusted by appropriately adjusting the position of the second focal point f2 of the elliptical mirrors 4a to be combined. A desired pattern P such as a circle or a polygon is formed on the back surface of the lens 5, and FIG. 3 shows an example where the pattern is a hexagon.
[0012]
In the present invention, the number of composite reflectors 4 for constituting the vehicular lamp 1 may be one or more, and when a plurality of composite reflectors 4 are employed in the vehicular lamp 1. The number of the elliptical mirrors 4a for forming the composite reflecting mirror 4 and the shape of the pattern P generated by the set of the second focus f2 are not limited to the same.
[0013]
FIG. 4 schematically shows the lighting state of the vehicular lamp 1 formed as described above. In this embodiment, the composite reflecting mirror 4 having a hexagonal pattern P is combined, When the lens 5 surface of the vehicular lamp 1 is turned on, a turtle-shaped pattern is displayed. Further, by changing the pattern P formed by the composite reflecting mirror 4, it is possible to display the design of the entire light emitting surface as various ones. Furthermore, by combining two or more types of patterns P, there are many more types. Diversification of the design of the entire light emitting surface.
[0014]
Here, when the pattern of the light emitting surface is examined in more detail, the pattern P is generated in the vicinity of the lens 5 as described above, whereas the LED lamp 2 is Since it exists in the bottom part of the composite reflecting mirror 4 formed in a substantially bowl shape, when looking at the light emitting surface of the lighting lamp 1 for the vehicle, the light emission is caused by the difference in depth between the pattern P and the LED lamp 2. A three-dimensional effect is produced on the surface.
[0015]
Therefore, in the vehicular lamp 1 according to the present invention, the shape of the lens 5 surface is recognized when the lamp is not lit, and has the same impression as the conventional vehicular lamp except for details such as the lens cut 5a. However, once it is turned on, it becomes a novel appearance due to the combination of the patterns P, the degree of attention is improved, the action as a signal lamp is more reliably transmitted, and the decoration effect is also improved.
[0016]
【The invention's effect】
As described above, according to the present invention, it is a vehicular lamp composed of a minimal lamp, a composite reflector, and a lens, and the composite reflector is a set of a plurality of elliptical mirrors cut out in a substantially strip shape along the long axis direction. Each of the elliptical mirrors has a first focal point in the minimal lamp and a second focal point in the vicinity of the lens, and a set of the second focal point as a composite reflecting mirror has a desired pattern in the vicinity of the lens. By making it a vehicle lamp that is formed, especially during lighting, it enables a novel light emitting surface design and stereoscopic effect by combining patterns, improving the degree of attention and other vehicles that are the original purpose, In addition to the extremely excellent effect of further ensuring the communication of pedestrians, the innovative design that has never existed in the past will also have the effect of improving the aesthetics.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a vehicular lamp according to the present invention.
FIG. 2 is a perspective view showing a composite reflecting mirror that is a main part of the vehicular lamp according to the present invention.
FIG. 3 is an explanatory diagram showing an example of a pattern obtained by a composite reflecting mirror.
FIG. 4 is an explanatory view schematically showing a state when the vehicular lamp according to the present invention is turned on.
FIG. 5 is a cross-sectional view showing a conventional example.
[Explanation of symbols]
1 …… Vehicle lamp 2 …… LED lamp 2
3 ... Substrate 4 ... Composite reflector 4a ... Elliptical mirror 5 ... Lens 5a ... Back 5b ... Lens cut P ... Pattern Y ... Long axis

Claims (3)

A vehicle lamp comprising a minimum lamp and the composite reflector and lens, said composite reflector, an elliptical mirror one surface subjected to cutting out into a substantially rectangular shape from the elliptical surface, such as spheroidal surface along Migihitsuji longitudinally And a plurality of the strip-shaped elliptical mirrors are connected to form a substantially bowl-like shape, each of the elliptical mirrors having a first focal point on the minimal lamp and a long axis of the main illumination direction of the vehicle lamp is to have a second focus on the rear vicinity of the lens is inclined with respect to, and, wherein the set of second focus as a composite reflecting mirror that forms the desired pattern in the rear vicinity of the lens A vehicular lamp characterized by the above.   2. The vehicular lamp according to claim 1, wherein the lens is cut with a lens corresponding to the pattern formed by the set of the second focal points.   The vehicular lamp according to claim 1, wherein the minimal lamp is an LED lamp.

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