JP7053745B2 - Car lights - Google Patents

Description

The present invention relates to lights, in particular to lighting or warning vehicle lights.

As shown in FIG. 1, the vehicle light of Patent Document 1 is installed behind the light emitting lens 11 projecting forward, the optical lens 12 connected to the rear of the light emitting lens 11, and the rear of the optical lens 12. The light emitting unit 13 and the base 14 on which the light emitting unit 13 is installed are provided.

When the light emitting unit 13 irradiates a plurality of light rays to the light emitting lens 11 and the optical lens 12 in front of the light emitting unit 13, the light emitting lens 11 and the optical lens 12 can emit the incident light rays to the front.

Taiwan Patent No. I679642 Gazette

However, since the light emitting lens 11, the optical lens 12, the light emitting unit 13, and the base 14 of the vehicle light are all arranged along the front-rear direction, the length of the car light in the front-rear direction is long, and the vehicle The design for installing the vehicle light is limited.

In view of the above problems, an object of the present invention is to provide a vehicle light having a short length in the front-rear direction and having a higher degree of freedom in design for installing a vehicle vehicle light.

In order to achieve the above object, the present invention defines a first optical axis along a first direction in the anteroposterior direction and a first focal point through which the first optical axis passes, and the first direction. A light emitting lens configured to refract a plurality of light rays propagating outward and forward along the axis, and having an light emitting surface projecting forward in the first direction.
Each comprises a plurality of optical systems having a light emitting unit and a lens unit arranged in order from the outside to the center side along a second direction substantially orthogonal to the first direction.
The light emitting unit is arranged so that the lens unit can be irradiated with a plurality of light rays.
The lens unit and the light emitting lens have a first extension line, which is an extension line of all the light rays emitted from each light emitting unit to the light emitting surface by the lens unit. Propagate in the second direction so as to pass through the first focal region centered on the focal point of the lens, then be reflected by the lens unit, and be emitted forward from the light emitting surface of the light emitting lens. Provides a car light characterized by being arranged and configured.

In the vehicle light of the present invention, since the light emitting unit and the lens unit are arranged in order from the outside to the center side along the second direction, the length in the first direction, which is the front-rear direction, can be reduced. The drawbacks of car lights can be eliminated.

Sectional view showing a conventional vehicle light A perspective view showing a first embodiment of the vehicle light of the present invention. Rear perspective view of the above car lights Sectional view showing the above-mentioned vehicle light Sectional drawing which shows the upper central part of the said car light Partially enlarged view of the upper center part of the above car light Sectional drawing which shows the lower central part of the said car light A perspective view showing a second embodiment of the vehicle light of the present invention. A perspective view showing a third embodiment of the vehicle light of the present invention.

Hereinafter, embodiments of the vehicle light of the present invention will be described in detail with reference to the drawings.

Before describing the invention in more detail, it should be noted that the same reference numerals are used repeatedly between drawings to indicate corresponding elements that may have similar properties, where appropriate.

FIG. 2 is a perspective view showing a first embodiment of the vehicle light of the present invention. FIG. 3 is a rear perspective view of the above-mentioned vehicle light. FIG. 4 is a cross-sectional view showing the above-mentioned vehicle light. FIG. 5 is a cross-sectional view showing an upper center portion of the vehicle light. FIG. 6 is a partially enlarged view of the upper center portion of the vehicle light. FIG. 7 is a cross-sectional view showing a lower center portion of the vehicle light.

As shown in FIGS. 2 and 3, the vehicle light of the present invention includes an emission lens 2, a plurality of optical systems 3, and a base 4.

As shown in FIGS. 5 and 7, the Idemitsu lens 2 is configured to refract a plurality of light rays propagating to the outside and the front of the Idemitsu lens 2 along a first direction D1 which is a front-rear direction. .. Further, as shown in FIGS. 4 and 5, the Idemitsu lens 2 is defined as a first optical axis A1 along the first direction D1 and a first focal point 23 through which the first optical axis A1 passes. Moreover, it has an light emitting surface 21 projecting forward in the first direction D1.

As shown in FIGS. 5 and 7, each of the plurality of optical systems 3 is arranged in order from the outside to the center side along the second direction D2 substantially orthogonal to the first direction D1. It has a light emitting unit 31 and a lens unit 32.

In this embodiment, as shown in FIGS. 2 and 3, the second direction D2 is the vertical direction, and an optical system including two optical systems 3 installed along the second direction D2. There are three sets, i.e., there are a total of six optical systems 3. The three optical system sets are aligned along a third direction D3 (ie, left-right direction) that is substantially orthogonal to the first direction D1 and the second direction D2. Further, the lens unit 32 is installed on the center side close to the first optical axis A1 with the first optical axis A1 as the center line, and the light emitting unit 31 is installed on the outside away from the first optical axis A1. ..

As shown in FIG. 4, the light emitting unit 31 is arranged so that the lens unit 32 can be irradiated with a plurality of light rays. In this embodiment, the light emitting unit 31 is not limited to the LED chip, but any other commercially available light emitting element can be used.

As shown in FIGS. 5 and 7, the lens unit 32 has a truncated cone-shaped first lens unit 33 to which a plurality of light rays from the light emitting unit 31 are incident, and a second direction of the first lens unit 33. It includes a second lens portion 34 that is integrally connected to the center side of D2 and is integrally connected to the rear side of the first direction D1 of the emission lens 2.

Further, in the lens unit 32 and the light emitting lens 2, as shown in FIGS. 5 and 7, the light rays emitted from each light emitting unit 31 are all the light rays reflected on the light emitting surface 21 by the lens unit 32. The first extension line L1, which is an extension line, propagates in the second direction D2 so as to pass through the first focal region 22 centered on the first focal point 23, and then is reflected by the lens unit 32. Then, it is arranged and configured so as to emit light from the light emitting surface 21 of the light emitting lens 2 to the front.

According to the optical principle, when a light ray emitted from a light source arranged at the focal point of a convex lens is incident on the convex lens, it is refracted by the convex lens to become a light ray parallel to each other and emitted from the convex lens.

In this embodiment, in each first extension line L1, as shown in FIGS. 5 and 7, the light beam emitted from the light emitting unit 31 is substantially parallel to the first direction D1 and is the light emitting surface 21 of the light emitting lens 2. It passes through the first focal point 22 so as to emit forward from.

Further, the first focal area 23 is a spherical area having the first focal point 22 as a spherical center, for example, within a radius of 3 to 5 mm.

In this embodiment, the lens unit 32 is integrally connected to the Idemitsu lens 2.

As shown in FIGS. 5 to 7, the first lens unit 33 includes a refracting surface 331, a first reflecting surface 332, and an connecting surface 333, and the second light along the second direction D2. The axis A2 is formed as defined.

As shown in FIGS. 5 to 7, the refraction surface 331 passes through the second optical axis A2 and protrudes toward the light emitting unit 31, and is emitted toward the refraction surface 331 by the light emitting unit 31. It is configured to refract the rays of light.

The second extension line L2, which is on the extension line of the light ray refracted by the refracting surface 331, passes through the second focal region 334 centered on the second focal point 335, as shown in FIGS. 5 to 7. The second focal point 335 is located far away from the light emitting unit 31 than the corresponding base 4 in the second direction D2 through which the second optical axis A2 passes.

As shown in FIGS. 5 to 7, the first reflecting surface 332 is a conical trapezoid formed so as to be tapered toward the light emitting unit 31 while surrounding the refracting surface 331.

As shown in FIGS. 5 to 7, the connecting surface 333 connects the refracting surface 331 and the first reflecting surface 332 while surrounding the second optical axis A2, and the connecting surface 333 is connected by the light emitting unit 31. It is configured to refract the light beam emitted toward the first reflecting surface 332 toward the first reflecting surface 332 and to be reflected by the first reflecting surface 332.

The second extension line L2, which is an extension line of the light ray reflected by the first reflection surface 332, passes through the second focal region 334 centered on the second focal point 335.

As shown in FIGS. 5 and 7, the second lens portion 34 extends obliquely from the light emitting unit 31 side to the light emitting surface 21 side, and the first optical axis A1 and the second optical axis It has a second reflective surface 341 that is inclined with respect to A2.

In this embodiment, the second reflective surface 341 is an aluminum-plated surface, and the two second reflective surfaces 341 in each optical system set are aligned posteriorly as shown in FIG. It is formed so as to have a V-shape that opens. In another embodiment, the second reflecting surface 341 may be a surface plated using any other plating material suitable for reflecting light rays.

In the Idemitsu lens 2 and the lens unit 32, as shown in FIGS. 5 and 7, the first focal point 23 cooperates with the second focal point 335 to form a convex first curved surface 51 toward the light emitting surface 21. And a two-leaf hyperboloid 5 including a concave second curved surface 52 toward the light emitting surface 21 are defined. Note that FIGS. 5 and 7 show only a part of the Futaba hyperboloid 5.

The first curved surface 51 defines a first curved surface focal point 511 located at the first focal point 23, and the second curved surface 52 defines a second curved surface focal point 521 located at the second focal point 335.

The second reflecting surface 341 coincides with a part of the second curved surface 52.

According to the optical principle, a ray emitted from a light source located at one of the focal points of a bilobed hyperboloid is reflected by the curved surface corresponding to that focal point, and an extension of the reflected ray is another focal point. Pass through. The bilobed hyperboloid is defined by their focal point and has a first curved surface and a second curved surface.

In this embodiment, the light rays emitted by some of the light emitting units 31 are refracted by the refracting surface 331 of the first lens unit 33, and further reflected by the second reflecting surface 341 to be the first. A virtual image is formed in the focal region 22 of the lens.

The light rays emitted by the other light emitting unit 31 are refracted by the connecting surface 333 of the first lens unit 33, then reflected by the first reflecting surface 332, and further by the second reflecting surface 341. Reflected to form another virtual image in the first focal region 22.

In the light beam emitted by the light emitting unit 31, the portion refracted by the refracting surface 331 and the portion refracted by the connecting surface 333 and then reflected by the first reflecting surface 332 each have a second focal point. A virtual image is formed in the region 334.

The virtual image described above functions as a virtual light source for the light emitting unit 31 of each optical system 3, and the light beam is considered to be emitted by the virtual light source.

The light ray considered to be emitted from the virtual light source is a light ray reflected by the second reflecting surface 341, and the first extension line L1 on the extension line of the reflected light ray is the first curved focal point. It passes through the first focal area 22 centered on the first focal point 23 where 511 is located.

That is, the first extension line L1 of the light beam refracted and reflected by the first lens 33 and the second lens 34 after being emitted by the light emitting unit 31 of each optical system system 3 is finally the first. It passes through the first focal region 22 centered on the focal point 23 of the. Since the first focal point 233 is located at the focal point of the light emitting lens 2, the light beam is emitted forward from the light emitting surface 21 of the light emitting lens 2.

In this embodiment, each second extension line L2 passes through the second focal point 334, as shown in FIGS. 5 and 7, and is therefore on the extension line of the light beam reflected by the second reflection surface 341. The first extension line L1 in the light beam passes through the first focal point 22, and the light ray is emitted forward from the light emitting surface 21 of the light emitting lens 2 substantially parallel to the first direction D1.

As shown in FIG. 2, the base 4 is installed on the outer side of the light emitting unit 31, is arranged along the third direction D3, and is arranged along the first direction D1. It is provided with a heat dissipation fin 41 having a plurality of heat dissipation plates 411 that are stretched diagonally with respect to the second direction D2 while being stretched.

According to the above configuration, as shown in FIGS. 5 and 7, since the light emitting unit 31 emits light in the vertical direction which is the second direction D2, the base 4 is also installed on both the upper and lower sides. Therefore, the length in the front-rear direction, which is the first direction D1, can be significantly reduced, and the drawbacks of the conventional vehicle light can be eliminated. Further, since the bases 4 installed on both the upper and lower sides are not shielded by the light emitting lens 2, it is possible to design the base 4 to have a novel appearance so as to expose the base 4 and improve the heat dissipation effect.

Further, since the light rays emitted by the plurality of light emitting units 31 are emitted so that the first extension lines L1 are all concentrated on the first focal point 22 of the first focal point region 23, the vehicle light of the present invention is used. By concentrating and collimating the light rays, it has the light emitting effect of a conventional vehicle light in which a plurality of light emitting units 31 are installed in the same place. Since the installation locations of the plurality of light emitting units 31 are dispersed, the heat dissipation effect is improved. Further, since the effect as one high output light emitting unit can be exhibited by using a plurality of low output light emitting units 31, the cost can be reduced. Further, by using a plurality of light emitting units 31 that emit light of different colors, it is possible to provide functions such as lighting and emitting a caution signal.

If necessary, the vehicle light of the present invention can be configured so that the light distribution is such that the light rays are emitted forward without being substantially parallel to the first direction D1. That is, the light beam reflected by the second reflecting surface 341 is concentrated in the range of the first focal region 23 so that the first extension line L1 does not pass through the first focal point 22 and is concentrated in the range of the first focal region 23. Lights can be configured.

Further, depending on the installation space of the car light, the plurality of optical systems 3 may be configured to be arranged along the third direction D3 only above or below, or have one above and one below. It can also be configured. Further, the second direction D2 is set to the left-right direction, and the plurality of optical systems 3 are configured to have a light emitting unit 31 and a lens unit 32 arranged in order from the outside to the center side along the left-right direction. You can also. At that time, since the bases 4 are installed on both the left and right sides, the bases 4 can be installed in a place where the upper and lower spaces are not sufficient but the left and right spaces are sufficient.

FIG. 8 is a perspective view showing a second embodiment of the vehicle light of the present invention.

Since the second embodiment of the vehicle light of the present invention has many configurations in common with the first embodiment, detailed description thereof will be omitted here, and only the differences thereof will be described.

In this embodiment, the three optical systems 3 are configured only above the second direction D2 in the vertical direction and are arranged along the third direction D3 in the left-right direction.

Since the light emitting lens 2 and the light emitting surface 21 thereof are the same as those in the first embodiment, they can be irradiated with a light distribution similar to that in the first embodiment, but the number of light emitting units in the optical system 3 is the first embodiment. Since it is reduced to half of the above, the brightness becomes half of that of the first embodiment.

Although the optical system 3 is not formed below the second direction D2, the V-shaped lower slope that opens rearward together with the second reflecting surface 341 is formed on the reflecting surface. There is.

FIG. 9 is a perspective view showing a third embodiment of the vehicle light of the present invention.

Since the third embodiment of the vehicle light of the present invention has many configurations in common with the first embodiment, detailed description thereof will be omitted here, and only the differences thereof will be described.

In this embodiment, two optical systems 3 are arranged side by side along the second direction D2. That is, one optical system 3 is configured on each of the upper and lower sides.

Since the light emitting lens 2 and the light emitting surface 21 thereof are the same as those in the first embodiment, they can be irradiated with a light distribution similar to that in the first embodiment, but the number of light emitting units in the optical system 3 is the first embodiment. Since it is reduced to one-third of the above, the brightness becomes one-third of that of the first embodiment.

In the above, for illustration purposes, many specific details have been presented to facilitate an overall understanding of the invention. However, it will be apparent to those skilled in the art that one or more other embodiments may be implemented without specific details. In addition, in the description showing "one embodiment" and "one embodiment" in the present specification, all the explanations accompanied by the display such as ordinal numbers are included in the specific implementation of the present invention having a specific aspect, structure, and characteristics. Please understand that it is possible. Further, in the present description, sometimes a plurality of variations are incorporated into one embodiment, drawing, or description thereof, but this is for the purpose of rationalizing the present description, and the multifaceted nature of the present invention is present. It is intended to be understood, and one or more features or specific embodiments in one embodiment, where appropriate, in the practice of the present disclosure, are one or more in the other embodiments. It can be carried out with more features or specific examples.

Although the preferred embodiments and variations of the present invention have been described above, the present invention is not limited thereto, and all modifications and equivalents are made as various configurations included in the spirit and scope of the broadest interpretation. It shall include the composition.

The vehicle light of the present invention can be applied to a vehicle, and is particularly suitable for a vehicle in which the installation space of the light is limited.

2 Emitting lens 21 Emitting surface 22 First focal point 23 First focal point area 3 Optical system 31 Light emitting unit 32 Lens unit 33 First lens unit 331 Refractive surface 332 First reflecting surface 333 Connecting surface 334 Second focal point 335 Second focal area 34 Second lens unit 341 Second reflective surface 4 Base 41 Radiating fin 411 Radiating plate 5 Futaba bicurved surface 51 First curved surface 511 First curved surface Focus 52 Second curved surface 521 Second curved surface Focus A1 First optical axis A2 Second optical axis D1 First direction D2 Second direction D3 Third direction L1 First extension line L2 Second extension line

Claims (3)

A plurality of optical axes along a first direction in the anteroposterior direction and a first focal point through which the first optical axis passes are defined and propagate outward and forward along the first direction. A light emitting lens configured to refract light rays and having an light emitting surface projecting forward in the first direction.
Each comprises a plurality of optical systems having a light emitting unit and a lens unit arranged in order from the outside to the center side along a second direction substantially orthogonal to the first direction.
The light emitting unit is arranged so that the lens unit can be irradiated with a plurality of light rays.
In the lens unit and the light emitting lens, the first extension line on which the light rays emitted from the light emitting units are on the extension lines of all the light rays reflected by the lens unit to the light emitting surface is the first. Propagate in the second direction so as to pass through the first focal region centered on the focal point of the lens, then be reflected by the lens unit, and be emitted forward from the light emitting surface of the light emitting lens. , Arranged and configured,
The lens unit is integrally connected to a first lens portion to which a plurality of light rays from the light emitting unit are incident and to the center side of the first lens portion in the second direction, and the light emission. Includes a second lens portion that is integrally connected to the rear side of the lens in the first direction.
The first lens unit is
It is formed so as to define a second optical axis along the second direction.
The refracting surface through which the second optical axis passes, and
A conical trapezoidal first reflecting surface that is tapered so as to reduce the diameter toward the light emitting unit while surrounding the refracting surface.
It is provided with a connecting surface that connects the refracting surface and the first reflecting surface while surrounding the second optical axis.
The second lens portion is a second reflecting surface that extends obliquely from the light emitting unit side to the light emitting surface side and is inclined with respect to the first optical axis and the second optical axis. Have,
The light rays emitted by some of the light emitting units are refracted by the refracting surface of the first lens unit and then reflected by the second reflecting surface to create a virtual image in the first focal region. Is formed,
The light rays emitted by the other light emitting unit are refracted by the connecting surface of the first lens unit, then reflected by the first reflecting surface, and reflected by the second reflecting surface. Another virtual image is formed in the first focal region.
The second extension line on the extension line of the light beam propagating toward the second reflection surface of the second lens is a second focus centered on the second focal point through which the second optical axis passes. Pass through the focal area and
In the light beam emitted by the light emitting unit, each of the portion refracted by the refracting surface and the portion refracted by the connecting surface and then reflected by the first reflecting surface is the second. A virtual image is formed in the focal area,
In the Idemitsu lens and the lens unit, the first focal point cooperates with the second focal point to form a convex first curved surface toward the light emitting surface and a concave second curved surface toward the light emitting surface. It is configured to define a curved surface and a two-leaf hyperboloid including.
A vehicle light characterized in that the second reflecting surface coincides with a part of the second curved surface . The vehicle light according to claim 1 , wherein the plurality of optical systems are arranged along a first direction and a third direction substantially orthogonal to the second direction. There are a plurality of optical system sets comprising the two said plurality of optical systems installed along the second direction.
The vehicle light according to claim 1 , wherein the plurality of optical system sets are arranged along a first direction and a third direction substantially orthogonal to the second direction.

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