JP6933901B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

Conventionally, there are vehicle lamps provided with a light source and a projection lens for projecting light emitted from the light source. Various forms of such vehicle lamps have been developed due to diversification of designs (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-79660

However, in the conventional vehicle lighting equipment, it is general that the light emitted from the above-mentioned light source is projected toward the front or the rear of the vehicle by the projection lens. Therefore, when one vehicle lighting device attempts to project light in a direction different from the front or rear of the vehicle (for example, sideways) in addition to the front or rear of the vehicle, the light source is directed in a different direction. Need to be added.

In this case, problems such as an increase in cost due to an increase in the number of light sources and an increase in size due to the arrangement of the light sources in different directions occur. It is also necessary to consider the visibility and design when projecting light in a direction different from the front or the rear.

The present invention has been proposed in view of such conventional circumstances, and can project light in a direction different from the front or rear of the vehicle in addition to the front or rear of the vehicle. Moreover, it is an object of the present invention to provide a vehicle lamp having excellent visibility and design.

In order to achieve the above object, the present invention provides the following means.
[1] Light source and
It is provided with a light guide body that guides the light emitted from the light source.
The light guide has an outer periphery extending between a base end surface located on a side facing the light source, a tip end surface located on a side opposite to the base end surface, and the base end surface and the tip end surface. A side surface, a notched surface formed so as to cut out a part of the outer peripheral side surface in the extending direction of the outer peripheral side surface from the tip surface, and a light emitting surface located on the opposite side of the outer peripheral side surface to the notched surface. , With a protruding portion of the notched surface protruding from the tip surface side,
The tip surface is inclined at an angle that reflects at least a part of the light incident on the tip surface toward the light emitting surface.
The cutout surface is inclined at an angle that reflects at least a part of the light incident on the cutout surface toward the light emitting surface.
A vehicle lamp characterized in that the boundary between the tip surface and the notch surface has a curved shape along the shape of the protruding portion.
[2] The tip surface is characterized in that it is inclined at an angle larger than the notch surface with respect to the traveling direction of light incident from the base end surface and guided toward the tip surface. The vehicle lighting fixture according to the above [1].
[3] The vehicle lamp according to the above [1] or [2], wherein a plurality of the protruding portions are provided side by side in the circumferential direction of the light guide body.
[4] The light guide body has a shape in which the tip surface and the cutout surface are connected by a continuous curved surface on both sides of the projecting portion [1] to [3]. ] For vehicle lamps according to any one of the items.
[5] The light guide has a substantially cylindrical shape.
The vehicle use according to any one of the above [1] to [4], wherein the cutout surface has a shape in which the width gradually decreases from the tip surface toward the extending direction of the outer peripheral side surface. Lighting equipment.
[6] The cutout surface is characterized by having a plurality of reflection cuts that reflect light L incident on the cutout surface at an angle less than a critical angle with respect to the light emitting surface. ] For vehicle lighting equipment according to any one of the items.
[7] The plurality of reflection cuts are adjusted so that the amount of light reflected by the reflection cuts gradually decreases from the tip surface toward the extending direction of the outer peripheral side surface. The vehicle lighting equipment according to [6].
[8] The light guide body is provided with a first lens that is arranged on a side facing the tip surface and projects light emitted from the tip surface. [1] to [7] The vehicle lighting equipment according to any one of the above.
[9] The light guide body is provided with a second lens arranged on a side facing the light emitting surface and projecting light emitted from the light emitting surface. The vehicle lighting equipment according to any one of the above.
[10] A second lens arranged on the side of the light guide body facing the light emitting surface and projecting light emitted from the light emitting surface is provided.
The vehicle lamp according to the above [8 ], wherein the first lens and the second lens are integrally formed.

As described above, according to the present invention, it is possible to project light in a direction different from the front or rear of the vehicle in addition to the front or rear of the vehicle, and the visibility and design are excellent. It is possible to provide lighting equipment for vehicles.

It is sectional drawing which shows the structure of the lamp for vehicle which concerns on 1st Embodiment of this invention. It is a perspective view which shows the structure of the 1st light guide lens included in the vehicle lamp shown in FIG. It is the configuration of the tip end side of the first light guide lens shown in FIG. 2, (a) is a side view seen from the cutout surface side, and (b) is a side view seen from the side orthogonal to the cutout surface side. Is. It is an example of a plurality of reflection cuts included in the first light guide lens shown in FIG. 2, (a) is a cross-sectional view showing a reflection cut on the tip side, and (b) is a cross-sectional view showing a reflection cut on the base end side. be. It is a configuration of a second light guide lens included in the vehicle lamp 1 shown in FIG. 1, (a) is a perspective view showing an example thereof, and (b) is a perspective view showing another example. It is an image which shows the light source image when the light emitting surface of the 1st light guide lens shown in FIG. 2 is made to emit light. A protrusion is provided on the tip end side of the first light guide lens shown in FIG. 2, (a) is a side view seen from the notched surface side, and (b) is orthogonal to the notched surface side. It is a side view seen from the side. It is an image which shows the light source image when the light emitting surface of the 1st light guide lens shown in FIG. 7 is made to emit light. The configuration is such that two protrusions are provided on the tip end side of the first light guide lens shown in FIG. 2, (a) is a side view seen from the cutout surface side, and (b) is the cutout surface side. It is a side view seen from the orthogonal side. The first light guide lens shown in FIG. 2 has a structure in which a protruding portion is provided from the tip surface to the notched surface, (a) is a side view seen from the notched surface side, and (b) is the notched surface. The side is a side view seen from the side orthogonal to the side. It is sectional drawing which shows the structure of the lamp for vehicle which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the drawings used in the following description, in order to make each component easier to see, the scale of the dimensions may be different depending on the component, and the dimensional ratio of each component is not always the same as the actual one. No.

(First Embodiment)
First, as a first embodiment of the present invention, for example, the vehicle lamp 1 shown in FIGS. 1 to 5 will be described. In the drawings shown below, the XYZ Cartesian coordinate system is set, the X-axis direction is the front-rear direction of the vehicle lighting tool 1, the Y-axis direction is the left-right direction of the vehicle lighting tool 1, and the Z-axis direction is the top and bottom of the vehicle lighting tool 1. The directions shall be indicated respectively.

FIG. 1 is a cross-sectional view showing the configuration of a vehicle lamp 1. FIG. 2 is a perspective view showing the configuration of the first light guide lens 7 included in the vehicle lamp 1 shown in FIG. 3A and 3B show a configuration on the tip end side of the first light guide lens 7 shown in FIG. 2, where FIG. 3A is a side view seen from the cutout surface side, and FIG. 3B is a side orthogonal to the cutout surface side. It is a side view seen from. 4A and 4B are examples of a plurality of reflection cuts included in the first light guide lens 7 shown in FIG. 2, where FIG. 4A is a cross-sectional view showing a reflection cut on the tip end side, and FIG. 4B is a reflection cut on the proximal end side. It is sectional drawing which shows. 5A and 5B are configurations of a second light guide lens 8 included in the vehicle lamp 1 shown in FIG. 1, where FIG. 5A is a perspective view showing an example thereof, and FIG. 5B is a perspective view showing another example.

As shown in FIG. 1, the vehicle lighting fixture 1 of the present embodiment includes a housing 2 having an open front surface and a transparent outer lens 3 covering the opening of the housing 2, and is lit by the housing 2 and the outer lens 3. The body 4 is composed.

The vehicle lighting equipment 1 includes a first light source 5 that emits a first light L1 toward the front and a second light source 6 that emits a second light L2 toward the front in the lamp body 4. , In front of the first light source 5 and to guide the first light L1 and to the front of the second light source 6 and to the side of the first light guide lens 7. A second light guide lens 8 that is arranged and guides the second light L2 is roughly provided.

The first light source 5 and the second light source 6 are composed of a plurality of light emitting diodes (LEDs) 9a and 9b. Further, among the plurality of LEDs 9a and 9b, the LED 9a located at the center of the housing 2 constitutes the first light source 5, and the plurality of LEDs 9b located around the LED 9a constitute the second light source 6. The first light source 5 and the second light source 6 radiate the lights L1 and L2 emitted by the LEDs 9a and 9b in directions parallel to each other.

In the present embodiment, the above-mentioned LEDs 9a and 9b are used as the first light source 5 and the second light source 6, but the types of the light sources 5 and 6 are particularly limited. Instead, for example, a light source such as a laser diode (LD) or an organic EL (OLED), or a lamp such as a halogen lamp or a HID lamp that has been generally used conventionally can be used. It is also possible to make the types of the first light source 5 and the second light source 6 different. Further, the arrangement and number of the light sources 5 and 6 can be changed as appropriate. Further, the colors of the lights L1 and L2 emitted from the light sources 5 and 6 can be appropriately changed according to the use of the vehicle lamp 1 such as white light, red light, and orange light.

As shown in FIGS. 1 and 2, the first light guide lens 7 is a light guide body having a substantially cylindrical shape as a whole, and the central axis thereof is the first light L1 emitted from the first light source 5. It is arranged so as to coincide with the optical axis of. As the first light guide lens 7, a material having a refractive index higher than that of air, such as transparent resin such as polycarbonate or acrylic or glass, can be used. Further, the shape of the first light guide lens 7 is not limited to the above-mentioned cylindrical shape, but may be an elliptical pillar shape, a prismatic shape, or the like.

The first light guide lens 7 has a proximal end surface 7a located on the side facing the first light source 5, a distal end surface 7b located on the opposite side of the proximal end surface 7a, and a proximal end surface a and a distal end surface 7b. An outer peripheral side surface 7c extending between them, a notched surface 7d formed so as to cut out a part of the outer peripheral side surface 7c in the extending direction from the tip surface 7b to the outer peripheral side surface 7c, and a notched surface 7d of the outer peripheral side surface 7c. It has a light emitting surface 7e located on the opposite side to the above.

The base end surface 7a constitutes an incident portion where the first light L1 emitted from the first light source 5 is incident. The incident portion is not limited to the case where the base end surface 7a is formed of a flat surface, and may be formed of, for example, a lens surface or a prism surface. Further, since the incident portion parallelizes or condenses the first light L1 incident on the proximal end surface 7a, the shape of the proximal end surface 7a can be appropriately changed. Further, the incident portion may have a configuration in which a lens, a prism, a reflector, or the like is arranged between the first light source 5 and the proximal end surface 7a.

As shown in FIGS. 1, 2 and 3 (a) and 3 (b), the tip surface 7b constitutes an exit surface that emits the first light L1 incident on the tip surface 7b. Further, the tip surface 7b constitutes a reflection surface that reflects at least a part of the light L3 incident on the tip surface 7b toward the light emitting surface 7e. The tip surface 7b is on the light emitting surface 7e side at an angle larger than the notch surface 7d, which will be described later, with respect to the traveling direction of the first light L1 that is incident from the base end surface 7a and guided toward the tip surface 7b. It is formed by an inclined flat inclined surface. The tip surface 7b is not limited to the flat inclined surface described above, but may be a curved inclined surface.

The cutout surface 7d constitutes a reflecting surface that reflects at least a part of the light L4 incident on the cutout surface 7d toward the light emitting surface 7e. The cutout surface 7d is formed by an inclined surface that is continuous with the tip surface 7b in the extending direction of the outer peripheral side surface 7c (the front-rear direction of the first light guide lens 7) and is curved at a gentler angle than the tip surface 7b. There is.

Therefore, the cutout surface 7d has a shape in which the width gradually decreases from the front end surface 7b toward the extending direction of the outer peripheral side surface 7c. As a result, the amount of light L4 reflected by the cutout surface 7d gradually decreases from the front to the rear.

As shown in FIGS. 4A and 4B, the cutout surface 7d is a plurality of reflections that reflect the first light L1 incident on the cutout surface 7d at an angle less than the critical angle with respect to the light emitting surface 7e. It has a cut 10. The plurality of reflection cuts 10 are provided side by side in the extending direction of the outer peripheral side surface 7c (the front-rear direction of the first light guide lens 7). The plurality of reflection cuts 10 are formed of, for example, a groove portion (prism surface) having a triangular cross section.

In this embodiment, the case where the reflection cut 10 is formed by a groove having a triangular cross section is illustrated, but the shape of the reflection cut 10 is not particularly limited and can be changed as appropriate. Is.

The plurality of reflection cuts 10 are adjusted so that the amount of light L4 reflected by the reflection cuts 10 gradually decreases from the front end surface 7b toward the extending direction of the outer peripheral side surface 7c. Specifically, in the present embodiment, a plurality of light guide lenses 7 shown in FIG. 4A are directed toward the proximal end side of the first light guide lens 7 shown in FIG. 4B. The depth of the groove portion constituting the reflection cut 10 of the above is shallow. On the other hand, the intervals between the plurality of reflection cuts 10 arranged in the front-rear direction of the first light guide lens 7 are the same. As a result, the amount of light L4 reflected by the plurality of reflection cuts 10 gradually decreases from the front to the rear. The depth of the grooves constituting the plurality of reflection cuts 10 is constant, and the distance between the plurality of reflection cuts 10 arranged in the front-rear direction of the first light guide lens 7 is set to the proximal end side of the first light guide lens 7. A similar effect can be obtained by a configuration in which the lens gradually expands toward the lens.

The light emitting surface 7e constitutes an exit surface that emits light L3 and L4 incident on the outer peripheral side surface 7c on the side facing the tip surface 7b and the notch surface 7d. The light emitting surface 7e has a shape that reflects the shape of the outer peripheral side surface 7c, but the directions of the lights L3 and L4 emitted from the light emitting surface 7e can be changed, or the light emitted from the light emitting surface 7e can be changed. Since L3 and L4 are focused or diffused, the shape and angle of the light emitting surface 7e can be changed as appropriate. Further, the plurality of reflection cuts 10 may be adjusted according to the shape and angle of the light emitting surface 7e. Further, an aluminum vapor deposition film may be provided on the light emitting surface 7e to form a half mirror, or the half mirror may be partially peeled off.

The second light guide lens 8 has, for example, a light guide having a substantially cylindrical shape as a whole as shown in FIG. 5 (a), or a light guide having a substantially semi-cylindrical shape as a whole as shown in FIG. 5 (b). It is a light guide body, and is arranged concentrically or semi-concentric with the first light guide lens 7 at a position surrounding the periphery of the first light guide lens 7. As the second light guide lens 8, the same material as illustrated in the first light guide lens 7 described above can be used.

As shown in FIG. 1, the second light guide lens 8 has a proximal end surface 8a located on the side facing the second light source 6, a distal end surface 8b located on the opposite side of the proximal end surface 8a, and a proximal end surface. Formed so as to cut out a part of the outer peripheral side surface 8c and the inner peripheral side surface 8d extending between the 8a and the tip surface 8b and a part of the inner peripheral side surface 8d in the extending direction from the tip surface 8b to the inner peripheral side surface 8d. It has a cutout surface 8e and a light emitting surface 8f located on the side opposite to the cutout surface 8e on the outer peripheral side surface 8c.

The base end surface 8a constitutes an incident portion where the second light L2 emitted from the second light source 6 is incident. The incident portion is not limited to the case where the base end surface 8a is formed of a flat surface, and may be formed of, for example, a lens surface or a prism surface. Further, since the incident portion parallelizes or condenses the second light L2 incident on the proximal end surface 8a, the shape of the proximal end surface 8a can be appropriately changed. Further, the incident portion may have a configuration in which a lens, a prism, a reflector, or the like is arranged between the second light source 6 and the proximal end surface 8a.

The tip surface 8b constitutes an exit surface that emits the second light L2 incident on the tip surface 8b. The front end surface 8b is formed by a flat surface orthogonal to the traveling direction of the second light L2 incident from the base end surface 8a and guided toward the front end surface 8b.

The tip surface 8b may be formed by an inclined surface inclined toward the light emitting surface 8f, similarly to the tip surface 7b of the first light guide lens 7 described above. In this case, it is possible to form a reflecting surface that reflects at least a part of the light incident on the tip surface 8b toward the light emitting surface 8f.

The cutout surface 8e constitutes a reflective surface that reflects at least a part of the light L5 incident on the cutout surface 8e toward the light emitting surface 8f. The cutout surface 8e is formed by a curved inclined surface continuous with the tip surface 8b in the extending direction of the inner peripheral side surface 8d (the front-rear direction of the second light guide lens 8).

Further, the cutout surface 8e has an angle that makes the second light L2 incident on the cutout surface 8e less than a critical angle with respect to the light emitting surface 8f, similarly to the cutout surface 7d of the first light guide lens 7 described above. It may be configured to have a plurality of reflective cuts (not shown) that reflect.

The light emitting surface 8f constitutes an exit surface that emits light L5 incident on the outer peripheral side surface 8c on the side facing the cutout surface 8e. Further, the lights L3 and L4 emitted from the light emitting surface 7e of the first light guide lens 7 described above are incident from the inner peripheral side surface 8d of the second light guide lens 8 and are incident from the outer peripheral side surface 8c (light emitting surface 8f). It is emitted.

The light emitting surface 8f has a shape that reflects the shape of the outer peripheral side surface 8c, but the shape and angle of the light emitting surface 8f are changed in order to change the directions of the lights L3, L4, and L5 emitted from the light emitting surface 8f. Etc. can be changed as appropriate.

As shown in FIG. 1, the outer lens 3 includes a first lens 3a arranged on the side facing the tip surfaces 7b and 8b of the first and second light guide lenses 7 and 8, and the first and second light guide lenses 3. The light emitting surfaces 7e and 8f of the light guide lenses 7 and 8 of the above are integrated with a second lens 3b arranged on the side facing the light emitting surfaces 7e and 8f.

The first lens 3a has a disk shape, and the first and second light L1 and L2 (main arrangement) emitted from the tip surfaces 7b and 8b of the first and second light guide lenses 7 and 8 are emitted. A light beam) is projected toward the front of the vehicle lamp 1. Further, the first lens 3a is provided with a light guide portion 11 for guiding the first light L1 to the outer lens 3 so as to project from a position facing the tip surface 7b of the first light guide lens 7. ing. Further, the first lens 3a may have a convex lens shape because the main light distribution beam is magnified and projected.

The second lens 3b has light L3, L4, L5 (referred to as a main / sub light distribution beam) emitted from the light emitting surfaces 7e and 8f of the first and second light guide lenses 7 and 8 as a sub light distribution beam. Is projected toward the side of the vehicle lighting fixture 1. Further, with respect to the second lens 3b, in order to change the direction of the sub light distribution beam and to collect or diffuse the sub light distribution beam, the shape, angle, etc. of the second lens 3b are appropriately changed. It is possible.

The outer lens 3 is not limited to the above-described configuration, and can be appropriately changed. For example, the outer lens 3 is not limited to the light beam in which the first lens 3a and the second lens 3b described above are integrated, but the first lens 3a and the second lens 3b are divided. You may.

As described above, in the vehicle lamp 1 of the present embodiment, apart from projecting the main light distribution beams (first and second lights L1 and L2) from the outer lens 3 toward the front, the outer lens 3 By projecting the sub-light distribution beams (lights L3, L4, L5) in a direction (side) different from the front, it is possible to produce a three-dimensional light.

Further, in the vehicle lamp 1 of the present embodiment, the main light distribution beam (first and second light L1, L2) and the sub light distribution beam (light L3) are directed in different directions (sideways) from the front and the front. , L4, L5) can be improved in visibility and design when projecting.

Further, in the vehicle lamp 1 of the present embodiment, the width of the notch surface 7d gradually decreases from the tip surface 7b of the first light guide lens 7 toward the extending direction of the outer peripheral side surface 7c, and the reflection cut 10 is used. The amount of reflected light L4 is adjusted so as to be gradually reduced. As a result, the light L3 and L4 emitted from the light emitting surface 7e can produce a flow of light from the front to the rear.

Further, in the vehicle lamp 1 of the present embodiment, the first light source 5 (LED9a) and the second light source 6 that emit the first light L1 and the second light L2 in the same direction (forward) with each other. By arranging (LED9b) on the same surface of the housing 2, it is possible to avoid an increase in the number of light sources and an increase in size.

By the way, in the vehicle lamp 1 of the present embodiment, when the light L3 and L4 emitted from the light emitting surface 7e of the first light guide lens 7 described above is used to produce a light flow from the front to the rear, the tip is It is desirable to continuously connect the light emitted by the light L3 reflected by the tip surface 7b and the light emitted by the light L4 reflected by the notched surface 7d across the boundary between the surface 7b and the notched surface 7d.

Here, FIG. 6 shows a light source image when the light emitting surface 7e of the first light guide lens 7 is made to emit light.
As shown in FIG. 6, the light emitted by the light L3 reflected by the tip surface 7b is stronger than the light emitted by the light L4 reflected by the notch surface 7d, and the boundary between the tip surface 7b and the notch surface 7d can be clearly seen.

Therefore, in the present embodiment, for example, as shown in FIGS. 7A and 7B, the protrusion 12 is provided on the tip end side of the first light guide lens 7. 7 (a) is a side view of the tip of the first light guide lens 7 provided with the protruding portion 12 as viewed from the cutout surface 7d side, and FIG. 7 (b) is the cutout surface 7d side. It is a side view seen from the orthogonal side.

The projecting portion 12 is provided so as to project from the central portion of the notch surface 7d on the tip surface 7b side. Further, the protruding portion 12 has a shape in which the width gradually decreases from the tip surface 7b side toward the extending direction of the cutout surface 7d. Further, the boundary between the tip surface 7b and the cutout surface 7d has a curved shape along the rounded shape of the protruding portion 12. Further, the first light guide lens 7 has a shape in which the tip surface 7b and the notched surface 7d are connected by a continuous curved surface 7f on both sides of the protruding portion 12.

FIG. 8 shows a light source image when the light emitting surface 7e emits light from the first light guide lens 7 provided with such a protruding portion 12.
As shown in FIG. 8, the light emitted by the light L3 reflected by the tip surface 7b and the light emitted by the light L4 reflected by the notched surface 7d can be smoothly connected at the boundary between the tip surface 7b and the notched surface 7d. It is possible.

As a result, in the vehicle lamp 1 of the present embodiment, the light L3 and L4 emitted from the light emitting surface 7e of the first light guide lens 7 can produce a continuous flow of light from the front to the rear. , It is possible to further improve its visibility and design.

A plurality of protruding portions 12 may be provided side by side in the circumferential direction of the first light guide lens 7. For example, the first light guide lens 7 shown in FIGS. 9A and 9B has a configuration in which two protrusions 12 are provided on the tip end side of the first light guide lens 7. 9 (a) is a side view of the tip of the first light guide lens 7 provided with the two protruding portions 12 as viewed from the cutout surface 7d side, and FIG. 9 (b) is the cutout surface 7d side. Is a side view seen from the orthogonal side.

Further, the protruding portion 12 may be provided so as to project from the tip surface 7b of the first light guide lens 7 to the notched surface 7d, for example, as shown in FIGS. 10A and 10B. .. 10 (a) is a side view of the first light guide lens 7 provided with the protruding portion 12 projecting from the tip surface 7b to the notched surface 7d, and (b) is a side view seen from the notched surface 7d side. The cutout surface 7d side is a side view seen from a side orthogonal to the cutout surface 7d side.

(Second Embodiment)
Next, as a second embodiment of the present invention, for example, the vehicle lamp 1A shown in FIG. 11 will be described. Note that FIG. 11 is a cross-sectional view showing the configuration of the vehicle lamp 1A. Further, in the following description, the same parts as those of the vehicle lamp 1 will be omitted and the same reference numerals will be given in the drawings.

As shown in FIG. 11, the vehicle lamp 1A of the present embodiment has a third light source that emits a third light L6 toward the front in the lamp body 4 in addition to the configuration of the vehicle lamp 1. A third light guide lens 14 arranged in front of the third light source 13 and guiding the third light L6 is provided.

The third light source 13 is composed of a plurality of LEDs 9c arranged outside the plurality of LEDs 9b located around the LED 9a. As the third light source 13, the same light sources as those illustrated in the first and second light sources 5 and 6 described above can be used.

The third light guide lens 14 is a light guide body having a substantially cylindrical shape or a substantially semi-cylindrical shape as a whole. The first and second light guide lenses 7 and 8 are arranged concentrically or semi-concentric at positions surrounding the periphery of the second light guide lens 8. As the third light guide lens 14, the same material as illustrated in the first light guide lens 7 described above can be used.

The third light guide lens 14 has a base end surface 14a located on the side facing the third light source 13, a front end surface 14b located on the side opposite to the base end surface 14a, and a base end surface 14a and a tip surface 14b. It has an outer peripheral side surface 14c and an inner peripheral side surface 14d extending between them.

The base end surface 14a constitutes an incident portion where the third light L6 emitted from the third light source 13 is incident. The incident portion is not limited to the case where the base end surface 14a is formed of a flat surface, and may be formed of, for example, a lens surface or a prism surface. Further, since the incident portion parallelizes or condenses the third light L6 incident on the proximal end surface 14a, the shape of the proximal end surface 14a can be appropriately changed. Further, the incident portion may have a configuration in which a lens, a prism, a reflector, or the like is arranged between the third light source 13 and the proximal end surface 14a.

The tip surface 14b constitutes an exit surface that emits a third light L6 incident on the tip surface 14b. The tip surface 14b is formed by a flat surface orthogonal to the traveling direction of the third light L6 incident from the base end surface 14a and guided toward the tip surface 14b. Further, the lights L3, L4, and L5 (secondary light distribution beams) emitted from the light emitting surface 8f described above are incident on the inner peripheral side surface 14d of the third light guide lens 14 and emitted from the outer peripheral side surface 14c.

The first lens 3a is provided with a light guide portion 15 for guiding the first light L1 to the outer lens 3 so as to project from a position facing the tip surface 7b of the first light guide lens 7. .. The light guide unit 15 constitutes a convex lens in order to magnify and project the first light L1. Other than that, it has basically the same configuration as the above-mentioned vehicle lamp 1.

As described above, in the vehicle lighting equipment 1A of the present embodiment, the main light distribution beams (first, second, and third light L1, L2) are directed forward from the outer lens 3 as in the vehicle lighting equipment 1. , L6), the sub-light distribution beam (light L3, L4, L5) is projected from the outer lens 3 in a direction different from the front (side) to obtain three-dimensional light. It is possible to produce.

Further, in the vehicle lamp 1A of the present embodiment, the main light distribution beams (first, second and third light L1, L2, L6) and the sub-distribution are directed in directions (sideways) different from the front and the front. It is possible to improve the visibility and design when projecting an optical beam (light L3, L4, L5).

Further, in the vehicle lamp 1A of the present embodiment, the width of the notch surface 7d gradually decreases from the tip surface 7b of the first light guide body 7 toward the extending direction of the outer peripheral side surface 7c, and the reflection cut 10 is used. The amount of reflected light L4 is adjusted so as to be gradually reduced. As a result, the light L3 and L4 emitted from the light emitting surface 7e can produce a flow of light from the front to the rear.

Further, in the vehicle lamp 1A of the present embodiment, the first light source 5 (LED9a) and the second light source 6 that emit the first light L1 and the second light L2 in the same direction (forward) with each other. By arranging (LED9b) on the same surface of the housing 2, it is possible to avoid an increase in the number of light sources and an increase in size.

Further, the vehicle lamp 1A of the present embodiment is configured to have a protrusion 12 provided on the tip end side of the first light guide lens 7, similar to the vehicle lamp 1 shown in FIGS. 7, 9 and 10. Is possible. As a result, in the vehicle lighting fixture 1A of the present embodiment, the light L3 and L4 emitted from the light emitting surface 7e of the first light guide body 7 can produce a continuous flow of light from the front to the rear. , It is possible to further improve its visibility and design.

The present invention is not necessarily limited to that of the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the first and second lights L1 and L2 (main light distribution beams) emitted from the tip surfaces 7b and 8b of the first and second light guide lenses 7 and 8 are used as the vehicle lamp 1 Lights L3, L4, and L5 (secondary light distribution beams) emitted from the light emitting surfaces 7e and 8f of the first and second light guide lenses 7 and 8 are projected to the front of the vehicle lamp 1 sideways. Although the configuration for projecting toward is illustrated, the configuration may be the opposite. That is, the lights L3, L4, and L5 emitted from the light emitting surfaces 7e and 8f of the first and second light guide lenses 7 and 8 are projected toward the front of the vehicle lamp 1, and the first and second guides are guided. It is also possible to have a configuration in which the first and second lights L1 and L2 emitted from the tip surfaces 7b and 8b of the optical lenses 7 and 8 are projected toward the side of the vehicle lamp 1.

Vehicle lighting fixtures to which the present invention is applied include, for example, headlamps (headlights), tail lamps (taillights), vehicle side lights (position lamps), auxiliary headlights (sub-headlamps), and front (rear). It can be applied to any vehicle lighting equipment such as fog lamps, daytime running lamps, lid lamps, brake lamps (stop lamps), back lamps, and turn signal lamps (winker lamps). ..

1,1A ... Vehicle lighting 2 ... Housing 3 ... Outer lens 3a ... First lens 3b ... Second lens 4 ... Lamp 5 ... First light source 6 ... Second light source 7 ... First light guide lens (Light guide body) 7a ... Base end surface (incident part) 7b ... Tip surface (emission surface, reflection surface) 7c ... Outer peripheral side surface 7d ... Notch surface (reflection surface) 7e ... Light emitting surface (emission surface) 7f ... Curved surface 8 ... No. 2 light guide lens (light guide body) 8a ... Base end surface (incident part) 8b ... Tip surface (emission surface, reflection surface) 8c ... Outer peripheral side surface 8d ... Inner peripheral side surface 8e ... Notched surface (reflection surface) 8f ... Light emitting surface (Emission surface) 9a, 9b, 9c ... LED 10 ... Reflection cut 11 ... Light guide 12 ... Projection 13 ... Third light source 14 ... Third light guide lens (light guide) 14a ... Base end surface (incident part) ) 14b ... Tip surface (emission surface) 14c ... Outer peripheral side surface 14d ... Inner peripheral side surface 15 ... Light guide unit L1 ... First light (main light distribution beam) L2 ... Second light (main light distribution beam) L3, L4 , L5 ... Secondary light distribution beam L6 ... Third light (main light distribution beam)

Claims (10)

Light source and
It is provided with a light guide body that guides the light emitted from the light source.
The light guide has an outer periphery extending between a base end surface located on a side facing the light source, a tip end surface located on a side opposite to the base end surface, and the base end surface and the tip end surface. A side surface, a notched surface formed so as to cut out a part of the outer peripheral side surface in the extending direction of the outer peripheral side surface from the tip surface, and a light emitting surface located on the opposite side of the outer peripheral side surface to the notched surface. , With a protruding portion of the notched surface protruding from the tip surface side,
The tip surface is inclined at an angle that reflects at least a part of the light incident on the tip surface toward the light emitting surface.
The cutout surface is inclined at an angle that reflects at least a part of the light incident on the cutout surface toward the light emitting surface.
A vehicle lamp characterized in that the boundary between the tip surface and the notch surface has a curved shape along the shape of the protruding portion. Claim 1 is characterized in that the tip surface is inclined at an angle larger than the notch surface with respect to the traveling direction of light incident from the base end surface and guided toward the tip surface. Vehicle lighting equipment described in. The vehicle lighting device according to claim 1 or 2, wherein a plurality of the protruding portions are provided side by side in the circumferential direction of the light guide body. Any one of claims 1 to 3, wherein the light guide has a shape in which the tip surface and the cutout surface are connected by a continuous curved surface on both sides of the protruding portion. Vehicle lighting equipment described in. The light guide has a substantially cylindrical shape.
The vehicle lamp according to any one of claims 1 to 4, wherein the cutout surface has a shape in which the width gradually decreases from the tip surface toward the extending direction of the outer peripheral side surface. Any one of claims 1 to 5, wherein the cutout surface has a plurality of reflection cuts that reflect light L incident on the cutout surface at an angle less than a critical angle with respect to the light emitting surface. Vehicle lighting equipment described in. The sixth aspect of the present invention is characterized in that the plurality of reflection cuts are adjusted so that the amount of light reflected by the reflection cuts gradually decreases from the tip surface toward the extending direction of the outer peripheral side surface. The vehicle lighting equipment described. The invention according to any one of claims 1 to 7, further comprising a first lens that is arranged on the side of the light guide body facing the tip surface and projects light emitted from the tip surface. The vehicle lighting equipment described. The invention according to any one of claims 1 to 8, further comprising a second lens which is arranged on the side of the light guide body facing the light emitting surface and projects the light emitted from the light emitting surface. The vehicle lighting equipment described. A second lens arranged on the side of the light guide body facing the light emitting surface and projecting light emitted from the light emitting surface is provided.
The vehicle lamp according to claim 8 , wherein the first lens and the second lens are integrally formed.

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