JP7074564B2 - Light emitting device - Google Patents

Description

The present invention relates to a light emitting device.

Conventionally, tires and wheels for vehicles have been devised in various shapes not only to reduce the weight but also to improve the design. Further, an LED is also devised in which an LED is arranged in a part of a wheel cover covering a tire wheel (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-171882

The present invention has been made in view of such a situation, and one of the objects thereof is to provide a technique for giving a new design and a new function to a tire wheel.

In order to solve the above problems, a light emitting device according to an embodiment of the present invention includes a tire wheel for an automobile and a light source provided on the tire wheel. The light source is arranged so as to irradiate light toward the disc surface of the tire wheel or to irradiate light from the tire wheel toward the road surface.

According to this aspect, a new design can be given to the tire wheel by the light radiated to the disc surface. Alternatively, the light emitted from the tire wheel toward the road surface can make it easier for a new function, for example, a car, a bicycle, a pedestrian, or the like existing around the own vehicle to recognize the existence of the own vehicle.

The light source is arranged in the center of the tire wheel so as to irradiate the light toward the disc surface, and the disc surface is configured to be a design surface by projecting the light of the light source. good. As a result, the light sources can be integrated and arranged.

The central portion may be configured so as not to follow the disc surface that rotates while the vehicle is running. This makes it possible to project a still image on the disk surface.

The light source is provided on the disk surface side of the spoke portions arranged so as to face the disk surface, and when the disk surface is viewed from the front, the light is directed toward a region not shielded by the spoke portions of the disk surface. It may be configured to irradiate. As a result, the light reflected on the disk surface can be efficiently used.

A control unit that controls turning on and off of the light source may be further provided. The light source is arranged so as to irradiate light from the tire wheel toward the road surface on the side, and the control unit lights up at the timing when the light source approaches the road surface while the automobile is running, and at the timing when the light source moves away from the road surface. The light source may be controlled so as to turn off the light. This makes it possible to efficiently irradiate the road surface with the light of the light source.

The tire wheel may have a first wheel having a disc surface and a second wheel in which a half mirror facing the disc surface is arranged. The disk surface may have a reflection area that reflects the light of the light source reflected by the half mirror. This makes it possible to form a space-saving and deep image.

The distance between the disc surface and the half mirror may be in the range of more than 0 mm and 90 mm or less.

It should be noted that any combination of the above components and the conversion of the expression of the present invention between methods, devices, systems and the like are also effective as aspects of the present invention.

According to the present invention, it is possible to give a tire wheel a new design and a new function.

It is an exploded perspective view of the light emitting device which concerns on 1st Embodiment. It is a schematic diagram for demonstrating the principle of multiple reflections in a light emitting device. FIG. 3A is a diagram showing a light source image in a state where the light emitting device according to the first embodiment is stopped, and FIG. 3B is a diagram showing a light source image in a state where the light emitting device shown in FIG. 3A is running. It is a figure which shows the light source image in the state of being. It is a perspective view of the light emitting device which concerns on 2nd Embodiment. It is sectional drawing of the main part of the light emitting device which concerns on 2nd Embodiment. FIG. 6A is a diagram showing a light source image in a state where the light emitting device according to the second embodiment is stopped, and FIG. 6B is a diagram in which the light emitting device shown in FIG. 6A is running. It is a figure which shows the light source image in the state of being. It is an exploded perspective view of the light emitting device which concerns on 3rd Embodiment. It is sectional drawing of the main part of the light emitting device which concerns on 3rd Embodiment. It is a figure which shows the light source image in the state which the light emitting device which concerns on 3rd Embodiment is stopped. It is a perspective view of the light emitting device which concerns on 4th Embodiment. It is sectional drawing of the main part of the light emitting device which concerns on 4th Embodiment. It is a figure which shows the light source image in the state which the light emitting device which concerns on 4th Embodiment is running.

Hereinafter, the present invention will be described with reference to the drawings based on the embodiments. The same or equivalent components, members, and processes shown in the drawings shall be designated by the same reference numerals, and duplicate description thereof will be omitted as appropriate. Further, the embodiment is not limited to the invention, but is an example, and all the features and combinations thereof described in the embodiment are not necessarily essential to the invention.

(First Embodiment)
FIG. 1 is an exploded perspective view of the light emitting device according to the first embodiment. The light emitting device 10 shown in FIG. 1 includes a tire wheel 12 for an automobile and a light source 14. The tire wheel 12 is composed of a first wheel 12a provided with a light source 14 and a second wheel 12b on which the tire 16 is mounted. The tire wheel 12 is driven by an in-wheel motor 17. Various configurations of the in-wheel motor have been devised, but the configuration is not particularly limited as long as it does not deviate from the object of the present invention. Further, the tire 16 may be driven by an engine instead of the in-wheel motor 17 via a drive shaft.

In the first wheel 12a, a circular (conical) mirror 18 is arranged as a reflection region on a disc surface facing the outside of the vehicle. The second wheel 12b is arranged with a disc-shaped half mirror 20 facing the outside of the vehicle so as to face the disc surface of the first wheel 12a. The light source 14 is arranged between the mirror 18 and the half mirror 20, and is arranged so as to irradiate light toward the disk surface of the first wheel 12a.

The light source 14 according to the present embodiment has five light emitting units 14a having a circular light emitting region. The light emitting unit 14a includes a semiconductor light emitting device and a lens that collects light emitted from the semiconductor light emitting device. As the semiconductor light emitting element, an LED (Light Emitting Device), an LD (Laser Diode), an EL (Electro Luminescence) element or the like is suitable.

The light emitting device 10 according to the present embodiment can give a new appearance to the tire wheel 12 by the principle of multiple reflection using the half mirror 20. FIG. 2 is a schematic diagram for explaining the principle of multiple reflection in the light emitting device 10. FIG. 3A is a diagram showing a light source image in a state where the light emitting device 10 according to the first embodiment is stopped, and FIG. 3B is a diagram showing a light source 10 shown in FIG. 3A traveling. It is a figure which shows the light source image in the state which is doing.

As shown in FIG. 2, when the light source 14 arranged between the mirror 18 and the half mirror 20 is viewed from the half mirror 20 side, the image of the light source 14 can be seen as a real image and a plurality of virtual images 22. Therefore, as shown in FIG. 3A, the light emitting device 10 when the vehicle is stopped seems to have five circular light emitting regions multiplex toward the inside of the tire wheel 12. Further, the light emitting device 10 during traveling seems to have a plurality of large circular images formed by the loci of the five circular light emitting regions toward the inside of the tire wheel 12.

As described above, the light emitting device 10 according to the present embodiment can give a new design to the tire wheel 12 by the light applied to the disc surface of the first wheel 12a. The distance between the mirror 18 arranged on the disk surface of the first wheel 12a and the half mirror 20 arranged on the second wheel 12b is preferably in the range of more than 0 mm and 90 mm or less. This makes it possible to form a space-saving and deep image.

(Second embodiment)
FIG. 4 is a perspective view of the light emitting device according to the second embodiment. FIG. 5 is a cross-sectional view of a main part of the light emitting device according to the second embodiment. The light emitting device 30 shown in FIG. 4 includes a tire wheel 32 for an automobile, a light source 34, a center hub 36 provided with a light source 34 in a central portion 36a, and a tire 38 mounted on the tire wheel 32. Be prepared. The central portion 36a of the center hub 36 is configured so as not to follow the disc surface 40 of the tire wheel 32 that rotates while the automobile is traveling. As a result, a still image can be projected on the disk surface 40. Further, the light sources 34 can be integrated and arranged.

In the light emitting device 30 according to the present embodiment, a plurality of spokes 42 are arranged so as to cover a part of the disk surface 40. The spoke 42 has a base connected to the center hub 36.

In order to prevent the center hub 36 from acting with respect to the tire wheel 32, for example, a bearing may be interposed between the center hub 36 and the tire wheel 32.

6 (a) is a diagram showing a light source image in a state where the light emitting device 30 according to the second embodiment is stopped, and FIG. 6 (b) is a diagram showing a light source image shown in FIG. 6 (a). It is a figure which shows the light source image in the state which is doing. The light emitting device 30 is configured such that a plurality of spokes 42 are radially arranged on the disk surface 40, and the light emitted from the light source 34 is projected onto the surface of the spokes 42.

Therefore, as shown in FIG. 6A, the light emitting device 30 when the vehicle is stopped can project a predetermined pattern or color onto the spokes 42 or the disk surface 40 by the light emitted from the light source 34. Further, in the light emitting device 30 during traveling, since the spokes 42 connected to the center hub 36 and the center hub 36 are stationary without following the tire wheel 32, the spokes 42 and the spokes 42 have the same patterns and colors as when the vehicle is stopped. It can be projected on the disk surface 40.

(Third embodiment)
FIG. 7 is an exploded perspective view of the light emitting device according to the third embodiment. FIG. 8 is a cross-sectional view of a main part of the light emitting device according to the third embodiment. The light emitting device 50 shown in FIG. 7 includes a tire wheel 52 for an automobile, a center hub 56 in which a plurality of spokes 54 are provided radially, a light source 58, and a tire 60 mounted on the tire wheel 52. Be prepared.

The light source 58 is provided on the back surface side (disk surface side) of the spokes 42 arranged so as to face the disk surface 62, and as shown in FIG. 8, light is directed toward the disk surface 62 of the tire wheel 52. Arranged to illuminate. The disk surface 62 is configured to become a design surface by projecting the light of the light source 58.

FIG. 9 is a diagram showing a light source image in a state where the light emitting device 50 according to the third embodiment is stopped. As shown in FIG. 9, the light source 58 and the spokes 54 are configured to irradiate light toward the region R not shielded by the spokes 54 of the disk surface 62 when the disk surface 62 is viewed from the front. .. As a result, the light reflected by the disk surface 62 can be efficiently used as a design.

Further, since the light source 58 is arranged on the back surface side of the spokes 54 and cannot be directly seen from the front of the tire wheel 52, the light emitting surface can be increased according to the size of the spokes 54. Further, by devising the shape and size of the inner lens of the light source 58, it is possible to give a grainy feeling to the pattern irradiated to the region R.

(Fourth Embodiment)
FIG. 10 is a perspective view of the light emitting device according to the fourth embodiment. FIG. 11 is a cross-sectional view of a main part of the light emitting device according to the fourth embodiment. The light emitting device 70 shown in FIG. 10 is different from the light emitting device 50 according to the third embodiment in that the light source 72 is arranged on the front side of the spokes 54. In the following description, the differences from the light emitting device 50 according to the third embodiment will be mainly described, and the same configurations are designated by the same reference numerals and the description thereof will be omitted as appropriate.

The light emitting device 70 according to the fourth embodiment includes a tire wheel 52 for an automobile and a light source 58 provided on the spokes 54 of the tire wheel 52. The light source 58 is arranged so as to irradiate light from the tire wheel 52 toward the road surface 74.

FIG. 12 is a diagram showing a light source image in a state where the light emitting device 70 according to the fourth embodiment is running. The light emitting device 70 has a new function, for example, a driver of a car or a bicycle existing around the own vehicle, a pedestrian, etc., by the irradiation pattern P formed by the light emitted from the tire wheel 52 toward the road surface 74. It is possible to make it easier to recognize the existence of the own vehicle. The irradiation pattern P may be any pattern or character as long as it is easily recognized by a driver of a car or a bicycle, a pedestrian, or the like.

The light emitting device 70 according to the present embodiment further includes a control unit 76 that controls turning on and off of the light source 58. The light source 72 is arranged so as to irradiate light from the tire wheel 52 toward the road surface 74 on the side, and the control unit 76 lights up at the timing when the light source 72 approaches the road surface 74 while the automobile is traveling, and the light source The light source 72 may be controlled so that the light source 72 is turned off at the timing when the 72 is moved away from the road surface 74. As a result, when the light source 72 is located above the tire wheel 52, the control unit 76 throttles the amount of light of the light source 72 to realize auxiliary light emission. On the other hand, when the light source 72 is located at the lower part of the tire wheel 52, the control unit 76 increases the amount of light of the light source 72 and realizes a bright irradiation pattern P.

Although the present invention has been described above with reference to the above-described embodiment, the present invention is not limited to the above-described embodiment, and the present invention is not limited to the above-described embodiment, and the present invention may be a combination or substitution of the configurations of the embodiments as appropriate. It is included in the present invention. Further, it is also possible to appropriately rearrange the combinations and the order of processing in the embodiment based on the knowledge of those skilled in the art, and to add modifications such as various design changes to the embodiments, and such modifications are added. The embodiments described above may also be included in the scope of the present invention.

10 light emitting device, 12 tire wheel, 12a first wheel, 12b second wheel, 14 light source, 16 tire, 18 mirror, 20 half mirror, 30 light emitting device, 32 tire wheel, 34 light source, 36 center hub, 36a center Unit, 40 disk surface, 42 spokes, 50 light emitting device, 52 tire wheel, 54 spokes, 56 center hub, 58 light source, 60 tires, 62 disk surface, 70 light emitting device, 72 light source, 74 road surface, 76 control unit.

Claims (3)

Tire wheels for automobiles and
The light source provided on the tire wheel and
A control unit that controls turning on and off of the light source is provided.
The light source is arranged so as to irradiate light from the tire wheel toward the side road surface .
The control unit is a light emitting device that controls the light source so that the light source is turned on at the timing when the light source approaches the road surface while the automobile is traveling and is turned off at the timing when the light source is turned off at the timing when the light source moves away from the road surface . Tire wheels for automobiles and
With a light source provided on the tire wheel,
The light source is arranged so as to irradiate light toward the disc surface of the tire wheel or to irradiate light from the tire wheel toward the road surface.
The tire wheel has a first wheel having the disc surface and a second wheel in which a half mirror facing the disc surface is arranged.
The disk surface is a light emitting device having a reflection region that reflects the light of the light source reflected by the half mirror. The light emitting device according to claim 2 , wherein the distance between the disk surface and the half mirror is in a range of more than 0 mm and 90 mm or less.

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