JP2000331509A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of lamps and to reduce a cost for a vehicular lighting fixture when a LED lamp is used for a light source by multiply reflecting the light source at a plurality of reflecting surfaces. SOLUTION: This vehicular lighting fixture is provided with at least one light emitting unit 3 consisting of a light source mounting surface 31a being a polygon and provided with at least one light source 2 and a reflecting surface 31b surrounding the periphery of the light source mounting surface 31a and connected with the light source mounting surface 31a at an angle more than a right angle. One light source mounted on the light source mounting surface 31a is multiply reflected at a plurality of reflecting surface 31b to be dispersed to visually increase the number of the light source. Consequently, the number of the light sources can be reduced even when a LED lamp with a narrow illuminating angle is used for the light source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly, to a vehicular lamp for emitting a signal such as a tail lamp, a stop lamp or the like for a signal to other vehicles or pedestrians. It is related.

[0002]

2. Description of the Related Art FIG. 5 shows an example of the structure of a conventional vehicle lamp 90 of this type.
A plurality of light sources 92 such as lamps are arranged in a matrix or the like, and a lens 93 is provided to cover the front of the light source 92 in the irradiation direction. Usually, the lens 93 has
A lens cut 93a is provided to form a light distribution characteristic as a tail lamp, for example. Although not shown, one or more incandescent light bulbs are used as a light source, parallel rays are formed by a reflector or Fresnel lens, and a predetermined light distribution characteristic such as a tail lamp is formed by a lens cut on the lens. Some get.

[0003]

However, in the above-described conventional vehicle lamps 90, each of them has a light distribution characteristic by a lens cut (93a).
The lens (93) itself has a similar impression. Therefore, when trying to improve the merchantability by improving the discriminability from other vehicles, it is necessary to perform the outer shape, etc., but extremely novel ones cannot be adopted due to the shape of the car, restrictions due to related laws and regulations, etc. Therefore, there has been a problem that the appealing power cannot be improved so much.

[0004] Further, in the vehicle lamp 90 using the LED lamp as the light source 92, since the irradiation angle of the LED lamp is narrow (40 to 60 °), it is used as a light source for a vehicle lamp having a large light emitting area such as a tail lamp. In such a case, a very large number is required, and there is a problem that the cost is remarkably increased, and solving these points has been an issue.

[0005]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, a polygonal light source mounting surface on which at least one light source is disposed, and a periphery of the light source mounting surface are provided. At least the number of sides of the polygon, and at least one light-emitting unit comprising a reflecting surface connected to the light source mounting surface at an angle equal to or greater than a right angle. This solves the problem.

[0006]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 is a vehicle lamp according to the present invention. In this embodiment, the vehicle lamp will be described as an example in which an LED lamp 2 is employed as a light source. However, the present invention is not limited thereto, and can be similarly implemented when the light source is an incandescent light bulb.

In the present invention, the vehicle lamp 1 is provided with a light emitting unit 3. In this embodiment, a triangular light emitting unit 31 shown in FIG. 2 and a hexagonal light emitting unit 32 shown in FIG. In the following, an example in which the triangular light emitting unit 3 is used will be described.
The vehicle lamp 1 may be constituted by only 1 or may be constituted by only the hexagonal light emitting unit 32, and furthermore, may be formed into other shapes such as a square and a rhombus.

The triangular light emitting unit 31 (see FIG. 2)
Is a unit in which one unit is constituted by one light source attachment surface 31a and three reflection surfaces 31b, and both the light source attachment surface 31a and the reflection surface 31b are used as the vehicle lamp 1. The surface on the side to be viewed when assembled is subjected to a reflective surface treatment by vacuum evaporation of aluminum or the like, and the light source mounting surface 31a is formed as an equilateral triangle in this embodiment, and an LED lamp is provided at the center. 2 are installed.

The reflecting surface 31b is formed in a trapezoidal shape, and the upper bottom side has the same length as the light source mounting surface 31a, and the lower bottom side is appropriately formed longer than the light source mounting surface. 31a are connected on the upper bottom side, and the slopes of the adjacent reflecting surfaces 31b are also connected.

Therefore, according to the structure of the present invention, the light source mounting surface 31a is surrounded by the number of reflecting surfaces 31b corresponding to the number of sides of the formed shape, and the light source mounting surface 31a is set at the bottom and forward. The triangular light-emitting unit 31 formed by the lower bottom of the three reflecting surfaces 31b has a regular triangular shape due to the above-described configuration.

The thus formed triangular light emitting unit 3
In FIG. 1, when the light source 2 is turned on, the light source 2 and the light source mounting surface 31a are reflected on the reflecting surface 31b, and the light source mounting surface 31a is reflected on the other reflecting surface 31b. The mounting surface 31a is set at the forefront, in other words, an icosahedral mapping IG is obtained in the triangular light emitting unit 31 at a position deeper than the light source mounting surface 31a.

That is, according to the structure of the present invention, the mapping I
G has a depth and a three-dimensional appearance greater than the size of the triangular light-emitting unit 31 formed. In addition, by providing three reflecting surfaces 31b, it is as if a kaleidoscope (kaleidoscope) is provided. The number of the light sources 2 is dispersed and increased.

The hexagonal light emitting unit 32 shown in FIG. 3 basically expects the same action as the triangular light emitting unit 31, but in the case of the hexagonal light emitting unit 32, the light source mounting surface 32a is Like the triangular light emitting unit 31, the first reflecting surface 32 is formed as an equilateral triangle, but the reflecting surface is formed as a square or a rectangle.
b and a second reflection surface 32c formed as an isosceles triangle are prepared.

The bottom of the second reflecting surface 32c is formed to have the same length as one side of the light source mounting surface 32a. Therefore, the first reflecting surface 32 is provided on three sides of the light source mounting surface 32a.
If b is connected in a front-spread state, and the gap between the first reflecting surfaces 32b is closed by the second reflecting surface 32c, a hexagonal light emitting unit 32 having a regular hexagonal outer shape is obtained.

At this time, the triangular light emitting unit 31
And the hexagonal light emitting unit 32 are formed so that the sides of the outer shape are the same, and by appropriately combining these light emitting units 31 and 32, the vehicle lamp 1 having a substantially planar shape is obtained.
The light emitting surface 4 can be filled without gaps,
As a result, the vehicle lamp 1 can be provided with a novel appearance that has not been achieved in the related art. In addition, the vehicle lamp 1
Is a complex lighting device such as a rear combination lamp (see FIG. 1), the light emitting unit 3 may be provided in a necessary portion such as a tail lamp portion or a desired portion.

At the same time, the reflection surface 31b, the first reflection surface 3
2b, the light source mounting surface 31a, 3
As the LED lamps 2 provided on the vehicle lamp 2a are projected, it is possible to show the LED lamps 2 more than the number of LED lamps 2 actually used. Cost can be reduced.

Here, as described above, as the vehicular lamp 1, if the light emitting surface 4 of a portion where the present invention is desired to be implemented, such as a tail lamp portion, is filled with the light emitting unit 3 without any gap. Since it is a good thing, in the actual implementation of the present invention, the light emitting unit 3 is not limited to a regular triangle and a regular hexagon, but may be one shape such as a triangle, a rectangle, a rhombus, a trapezoid, and a wide hexagon. Alternatively, any shape may be used as long as a plane can be obtained by combining a plurality of shapes.

Although the above description has been made with reference to an example of a tail lamp having a relatively wide light emitting surface, the present invention is not limited to this. For example, a relatively light emitting surface such as a side marker lamp or a parking lamp is used. However, the present invention can also be applied to a vehicle lamp having a relatively small size. In this case, the light emitting unit 3 does not have to be a combination of a plurality of light emitting elements as described above, and the purpose can be sufficiently achieved as one light emitting unit 3 for one lamp.

In the present invention, the light source mounting surface (31)
a, 32a) with the reflecting surface (31b, 32b, 32c), the reflecting surface (3b) is provided.
1b, 32b, and 32c), light that is directed to the side is also generated. Even when the light source is the LED lamp 2, the light distribution characteristics can be satisfied only by the light from the light emitting unit 3.

Accordingly, the lens (not shown) provided to cover the front surface of the light emitting unit 3 may be a so-called plain lens having no lens cut, and
The shape of the light emitting unit 3 can be seen even when the vehicle lamp 1 is not lit, not to mention when the vehicle lamp 1 is lit, and it is possible to give a novel impression to the viewer.

FIG. 4 shows another embodiment of the vehicular lamp 1 according to the present invention as a main part. Here, an example in which the embodiment is applied to the hexagonal light emitting unit 32 is shown. Also in this embodiment, the main LED is located at the center of the light source mounting surface 32a.
The lamp 21 is similarly mounted, and the sub-LED lamp 22 is also disposed on the first reflection surface 32b as an appropriate position such as the center.

By doing so, the light source mounting surface 32a and the main LED lamp 21 provided on the light source mounting surface 32a are mapped onto the first reflecting surface 32b as shown in FIG.
The image is reflected as G2, and the sub LED lamp 22 attached to the first reflection surface 32b itself is recognized as the original position, and it looks as if the LED lamps 21 and 22 are arranged in the front-back direction.

On the side of the light source mounting surface 32a, the first reflecting surface 32b and the sub LED lamp 22 are reflected at a rear position as an image IG3.
Also in 2a, it seems that the LED lamps 22 and 21 are arranged in the front-back direction. Therefore, the hexagonal light emitting unit 32 can produce a further sense of depth, and the number of LED lamps can be increased, so that a more novel appearance can be provided.

[0024]

As described above, according to the present invention, a polygonal light source mounting surface on which at least one light source is disposed, and a periphery of the light source mounting surface is surrounded by at least the number of sides of the polygon. The light source mounting surface is a vehicular lamp including at least one of a light emitting unit having a reflecting surface connected at an angle equal to or greater than a right angle, so that one light source mounted on the light source mounting surface can have a plurality of reflecting surfaces. By making multiple reflections, it is possible to reduce the number of uses even when an LED lamp with a narrow irradiation angle is used as a light source, thereby reducing the cost of vehicle lighting. The effect is extremely excellent.

In addition, as described above, since the light source mounting surface is surrounded by the reflecting surface which is connected at a right angle or more, an image is generated at a position deeper than the depth where the light emitting unit is formed. As a result, it is possible to give the vehicle lamp a further sense of depth and three-dimensionality, and to perform a novel display that has not been achieved in the past.

[Brief description of the drawings]

FIG. 1 is a front view showing an essential part of an embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a front view showing a triangular light emitting unit of the same embodiment.

FIG. 3 is a front view showing the same hexagonal light emitting unit.

FIG. 4 is a cross-sectional view showing another embodiment of the vehicular lamp according to the present invention.

FIG. 5 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... LED lamp 21 ... Main LED lamp 22 ... Sub LED lamp 3 ... Light emitting unit 31 ... Triangle light emitting unit 31a ... Light source mounting surface 31b ... Reflective surface 32 ... Hexagon Light emitting unit 32a: light source mounting surface 32b: first reflecting surface 32c: second reflecting surface

Claims (4)

[Claims] 1. A light source mounting surface which is polygonal and on which at least one light source is disposed, and which surrounds the periphery of the light source mounting surface by at least the number of sides of the polygon and has an angle of at least a right angle to the light source mounting surface. 1. A vehicular lamp comprising at least one of a light-emitting unit comprising a reflection surface connected with a light-emitting unit. 2. The vehicular lamp according to claim 1, wherein the light source is provided on at least a part of the reflection surface. 3. The vehicular lamp according to claim 1, wherein the light emitting unit has a plurality of shapes, and a light emitting surface is formed by a combination of the plurality of shapes. 4. The vehicular lamp according to claim 1, wherein the light source is an LED lamp.