JP2018120658A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle lighting device capable of projecting light in a direction different from the front or rear of a vehicle in addition to the front or the rear of the vehicle and having excellent visibility and design. SOLUTION: A light source 5 and a light guide body 7 for guiding light L1 emitted from the light source 5 are provided, and the light guide body 7 has a base end surface 7a located on a side facing the light source 5 and a base end surface. The tip surface 7b located on the opposite side of the 7a, the outer peripheral side surface 7c extending between the base end surface 7a and the tip surface 7b, and the outer peripheral side surface 7c extending from the tip surface 7b to the outer peripheral side surface 7c. It has a notched surface 7d formed so as to partially cut out, and a light emitting surface 7e located on the opposite side of the notched surface 7d of the outer peripheral side surface 7c, and the tip surface 7b is at least incident on the tip surface 7b. A part of the light L3 is inclined at an angle to be reflected toward the light emitting surface 7e, and the cutout surface 7d is an angle at which at least a part of the light L4 incident on the cutout surface 7d is reflected toward the light emitting surface 7e. It is tilted. [Selection diagram] Fig. 1

Description

  The present invention relates to a vehicular lamp.

  Conventionally, there is a vehicular lamp including a light source and a projection lens that projects light emitted from the light source. In such vehicular lamps, various types of lamps have been developed by diversifying designs (see, for example, Patent Document 1).

JP-A-2015-79660

  However, the conventional vehicular lamp generally projects the light emitted from the above-described light source toward the front or rear of the vehicle by a projection lens. Therefore, in addition to the front or rear of the vehicle with one vehicular lamp, when light is projected in a direction different from the front or rear of the vehicle (for example, the side), the light source is directed in a different direction. Need to add.

  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 may occur. In addition, it is necessary to consider the visibility and design when light is projected in a direction different from the front or 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. And it aims at providing the vehicle lamp excellent in visibility and design property.

In order to achieve the above object, the present invention provides the following means.
[1] a light source;
A light guide for guiding the light emitted from the light source,
The light guide includes a base end face located on the side facing the light source, a tip end face located on the opposite side of the base end face, and an outer periphery extending between the base end face and the tip end face. A side surface, a notch 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 from the notched surface; Have
The tip surface is inclined at an angle that reflects at least part of the light incident on the tip surface toward the light emitting surface;
The vehicular lamp, wherein the cut surface is inclined at an angle that reflects at least a part of light incident on the cut surface toward the light emitting surface.
[2] The distal end surface is inclined at a larger angle than the notch surface with respect to a traveling direction of light incident from the base end surface and guided toward the distal end surface. The vehicular lamp according to [1].
[3] The vehicular lamp according to [1] or [2], wherein the light guide has a protruding portion that protrudes from the tip surface side of the notch surface.
[4] The vehicular lamp according to [3], wherein a boundary between the tip surface and the notch surface has a shape curved along the shape of the protruding portion.
[5] The vehicular lamp according to [3] or [4], wherein a plurality of the protruding portions are provided side by side in the circumferential direction of the light guide.
[6] The above [3] to [5], wherein the light guide has a shape in which the tip surface and the notch surface are connected by a continuous curved surface on both sides of the protruding portion. ] The vehicle lamp as described in any one of.
[7] The light guide is substantially cylindrical.
The vehicle notch according to any one of [1] to [6], wherein the notch surface has a shape in which a width gradually decreases from the front end surface toward an extending direction of the outer peripheral side surface. Light fixture.
[8] The [1] to [7], wherein the cut surface has a plurality of reflection cuts that reflect the light L incident on the cut surface at an angle that is less than a critical angle with respect to the light emitting surface. ] The vehicle lamp as described in any one of.
[9] The plurality of reflection cuts are adjusted such that the amount of light reflected by the reflection cut gradually decreases from the front end surface toward the extending direction of the outer peripheral side surface. [8] The vehicular lamp according to [8].
[10] The above [1] to [9], comprising a first lens that is disposed on a side of the light guide opposite to the tip surface and projects light emitted from the tip surface. The vehicle lamp according to any one of the above.
[11] The above [1] to [10], comprising a second lens disposed on a side of the light guide facing the light emitting surface and projecting light emitted from the light emitting surface. The vehicle lamp according to any one of the above.
[12] The vehicular lamp according to [11], wherein the first lens and the second lens are integrally formed.

  As described above, according to the present invention, light can be projected 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 a vehicular lamp.

It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the structure of the 1st light guide lens with which the vehicle lamp shown in FIG. 1 is provided. 2 is a configuration of the front end side of the first light guide lens shown in FIG. 2, (a) is a side view seen from the notch surface side, and (b) is a side view seen from the side orthogonal to the notch surface side. It is. It is an example of the some reflective cut which the 1st light guide lens shown in FIG. 2 has, (a) is sectional drawing which shows the reflective cut of the front end side, (b) is sectional drawing which shows the reflective cut of the base end side. is there. It is a structure of the 2nd light guide lens with which the vehicle lamp 1 shown in FIG. 1 is provided, (a) is a perspective view which shows the example, (b) is a perspective view which shows another example. It is an image which shows a light source image when the light emission surface of the 1st light guide lens shown in FIG. 2 is light-emitted. 2 is a configuration in which a protruding portion is provided on the distal end side of the first light guide lens shown in FIG. 2, (a) is a side view seen from the notch surface side, and (b) is orthogonal to the notch surface side. It is the side view seen from the side. It is an image which shows a light source image when light-emitting the light emission surface of the 1st light guide lens shown in FIG. It is the structure by which two protrusion parts were provided in the front end side of the 1st light guide lens shown in FIG. 2, (a) is the side view seen from the notch surface side, (b) is the notch surface side. It is the side view seen from the orthogonal side. 2 is a configuration in which a projecting portion is provided from the front end surface to the notch surface of the first light guide lens shown in FIG. 2, (a) is a side view seen from the notch surface side, and (b) is the notch surface. It is the side view seen from the side orthogonal to the side. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 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 easy to see, the scales 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. Absent.

(First embodiment)
First, as a first embodiment of the present invention, for example, a vehicular lamp 1 shown in FIGS. 1 to 5 will be described. In the drawings shown below, an XYZ orthogonal coordinate system is set, the X-axis direction is the front-rear direction of the vehicle lamp 1, the Y-axis direction is the left-right direction of the vehicle lamp 1, and the Z-axis direction is the vertical direction of the vehicle lamp 1. Each direction shall be indicated.

  FIG. 1 is a cross-sectional view showing the configuration of the vehicular lamp 1. FIG. 2 is a perspective view showing the configuration of the first light guide lens 7 provided in the vehicular lamp 1 shown in FIG. 3 is a configuration of the front end side of the first light guide lens 7 shown in FIG. 2, (a) is a side view seen from the notch surface side, and (b) is a side orthogonal to the notch surface side. It is the side view seen from. FIG. 4 is an example of a plurality of reflection cuts included in the first light guide lens 7 shown in FIG. 2, (a) is a sectional view showing the reflection cut on the distal end side, and (b) is the reflection cut on the proximal end side. FIG. FIG. 5 is a configuration of the second light guide lens 8 included in the vehicular lamp 1 shown in FIG. 1, (a) is a perspective view showing an example thereof, and (b) is a perspective view showing another example.

  As shown in FIG. 1, the vehicular lamp 1 according to the present embodiment includes a housing 2 whose front surface is open and a transparent outer lens 3 that covers the opening of the housing 2. A body 4 is constructed.

  The vehicular lamp 1 includes a first light source 5 that emits the first light L1 forward and a second light source 6 that emits the second light L2 forward. The first light guide lens 7 that is disposed in front of the first light source 5 and guides the first light L 1, and in front of the second light source 6 and to the side of the first light guide lens 7. And a second light guide lens 8 that is disposed and guides the second light L2.

  The 1st light source 5 and the 2nd light source 6 consist of several light emitting diode (LED) 9a, 9b. Among the plurality of LEDs 9 a and 9 b, the LED 9 a located at the center of the housing 2 constitutes the first light source 5, and the plurality of LEDs 9 b located around the LED 9 a constitutes the second light source 6. The first light source 5 and the second light source 6 emit light L1 and L2 emitted from the respective LEDs 9a and 9b radially in directions parallel to each other.

  In the present embodiment, the above-described 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, it is also possible to use a light emitting element such as a laser diode (LD) or an organic EL (OLED), or a lamp such as a halogen lamp or an HID lamp that is generally used conventionally. 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 appropriately changed. 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 vehicular 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 having a substantially cylindrical shape as a whole, and the first light L1 emitted from the first light source 5 on the central axis thereof. The optical axis is aligned with the optical axis. In addition, about the 1st light guide lens 7, the thing of materials with a refractive index higher than air, such as transparent resins, such as polycarbonate and an acryl, and glass, can be used, for example. Further, the shape of the first light guide lens 7 is not limited to the cylindrical shape described above, and may be an elliptical prism shape, a prismatic shape, or the like.

  The first light guide lens 7 includes a proximal end surface 7a located on the side facing the first light source 5, a distal end surface 7b located opposite to the proximal end surface 7a, and a proximal end surface a and a distal end surface 7b. An outer peripheral side surface 7c extending therebetween, a cutout surface 7d formed by cutting out a part of the outer peripheral side surface 7c in the extending direction of the outer peripheral side surface 7c from the front end surface 7b, and a cutout surface 7d of the outer peripheral side surface 7c. And a light emitting surface 7e located on the opposite side.

  The base end surface 7a constitutes an incident portion on which the first light L1 emitted from the first light source 5 enters. The incident part 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 part collimates or condenses the first light L1 incident on the base end surface 7a, the shape of the base end surface 7a can be changed as appropriate. Furthermore, the incident portion may have a configuration in which a lens, a prism, a reflector, or the like is disposed between the first light source 5 and the base end surface 7a.

  As shown in FIGS. 1, 2, 3 (a) and 3 (b), the distal end surface 7 b constitutes an emission surface that emits the first light L 1 incident on the distal end surface 7 b. The tip surface 7b constitutes a reflecting surface that reflects at least part of the light L3 incident on the tip surface 7b toward the light emitting surface 7e. The front end surface 7b is incident on the light emitting surface 7e side at an angle larger than a notch surface 7d described later with respect to the traveling direction of the first light L1 incident from the base end surface 7a and guided toward the front end surface 7b. It is formed by an inclined flat inclined surface. In addition, about the front end surface 7b, it is good also as not only the flat inclined surface mentioned above but the curved inclined surface.

  The cut surface 7d constitutes a reflection surface that reflects at least a part of the light L4 incident on the cut surface 7d toward the light emitting surface 7e. The notch surface 7d is formed by an inclined surface that is continuous with the distal end 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 distal end surface 7b. Yes.

  Therefore, the notch 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. Thereby, the light quantity of the light L4 reflected by the notch surface 7d gradually decreases from the front toward the rear.

  As shown in FIGS. 4A and 4B, the cut surface 7d has a plurality of reflections that reflect the first light L1 incident on the cut 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 reflective 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 configured by, for example, grooves (prism surfaces) having a triangular cross section.

  In the present embodiment, the case where the reflection cut 10 is configured by a groove portion having a triangular cross section is illustrated, but the shape and the like of the reflection cut 10 are not particularly limited and can be appropriately changed. It is.

  The plurality of reflection cuts 10 are adjusted so that the amount of light L4 reflected by the reflection cut 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 points increase from the distal end side of the first light guide lens 7 shown in FIG. 4A toward the proximal end side of the first light guide lens 7 shown in FIG. The depth of the groove part constituting the reflection cut 10 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. Thereby, the light quantity of the light L4 reflected by the plurality of reflection cuts 10 gradually decreases from the front toward the rear. In addition, the depth of the groove part which comprises the some reflective cut 10 is made constant, and the space | interval of the several reflective cut 10 arranged in the front-back direction of the 1st light guide lens 7 is made into the base end side of the 1st light guide lens 7. A similar effect can also be obtained by gradually expanding the configuration.

  The light emitting surface 7e constitutes an emission 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 reflecting the shape of the outer peripheral side surface 7c, but the direction of the light L3, L4 emitted from the light emitting surface 7e is changed, or the light emitted from the light emitting surface 7e. In order to condense or diffuse L3 and L4, the shape and angle of the light emitting surface 7e can be appropriately changed. Moreover, what is necessary is just to adjust the some reflective cut 10 according to the shape, angle, etc. of the light emission surface 7e. Furthermore, 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.

  For example, the second light guide lens 8 has a substantially cylindrical shape as shown in FIG. 5A, or a substantially semicylindrical shape as shown in FIG. 5B. It is a light guide, and is arranged concentrically or semi-concentrically with the first light guide lens 7 at a position surrounding the periphery of the first light guide lens 7. In addition, about the 2nd light guide lens 8, the thing of the same material illustrated with the 1st light guide lens 7 mentioned above can be used.

  As shown in FIG. 1, the second light guide lens 8 includes a base end face 8a located on the side facing the second light source 6, a tip end face 8b located on the side opposite to the base end face 8a, and a base end face. An outer peripheral side surface 8c and an inner peripheral side surface 8d extending between 8a and the front end surface 8b, and a part of the inner peripheral side surface 8d cut away from the front end surface 8b in the extending direction of the inner peripheral side surface 8d. The cut-out surface 8e and the light-emitting surface 8f located on the opposite side of the cut-out surface 8e of the outer peripheral side surface 8c are provided.

  The base end face 8a constitutes an incident part on which the second light L2 emitted from the second light source 6 enters. The incident part 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. Moreover, since the incident part collimates or condenses the second light L2 incident on the base end face 8a, the shape of the base end face 8a can be changed as appropriate. Furthermore, the incident part may have a configuration in which a lens, a prism, a reflector, or the like is disposed between the second light source 6 and the base end face 8a.

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

  In addition, about the front end surface 8b, you may form by the inclined surface inclined to the light emission surface 8f side similarly to the front end surface 7b of the 1st light guide lens 7 mentioned above. In this case, it is possible to configure a reflection surface that reflects at least a part of the light incident on the tip surface 8b toward the light emitting surface 8f.

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

  In addition, the notch surface 8e has an angle that makes the second light L2 incident on the notch surface 8e less than the critical angle with respect to the light emitting surface 8f, like the notch surface 7d of the first light guide lens 7 described above. It is good also as a structure which has several reflective cuts (not shown) which reflect.

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

  The light emitting surface 8f has a shape reflecting 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 direction of the light L3, L4, L5 emitted from the light emitting surface 8f. Etc. can be appropriately changed.

  As shown in FIG. 1, the outer lens 3 includes a first lens 3 a disposed on the side facing the front end surfaces 7 b and 8 b of the first and second light guide lenses 7 and 8, and first and second lenses. The light guide lenses 7 and 8 have a configuration in which the second lens 3b disposed on the side facing the light emitting surfaces 7e and 8f is integrated.

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

  The second lens 3b emits light L3, L4, L5 emitted from the light emitting surfaces 7e, 8f of the first and second light guide lenses 7, 8 as a sub light distribution beam (referred to as a main sub light distribution beam). Is projected toward the side of the vehicular lamp 1. For the second lens 3b, the shape, angle, and the like of the second lens 3b are appropriately changed in order to change the direction of the sub-light distribution beam or to collect or diffuse the sub-light distribution beam. It is possible.

  Note that the outer lens 3 is not limited to the configuration described above, and can be modified as appropriate. 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, and the first lens 3a and the second lens 3b are divided. May be.

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

  Further, in the vehicular lamp 1 of the present embodiment, the main light distribution beam (first and second lights L1, L2) and the sub light distribution beam (light L3) are directed in a direction (side) different from the front and the front. , L4, L5) can be improved in visibility and design.

  Further, in the vehicular lamp 1 of the present embodiment, the width of the cutout surface 7d gradually decreases from the front end surface 7b of the first light guide lens 7 to 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 gradually decrease. Thereby, it is possible to produce the flow of light from the front to the rear by the lights L3 and L4 emitted from the light emitting surface 7e.

  Moreover, in the vehicle lamp 1 of the present embodiment, the first light source 5 (LED 9a) and the second light source 6 that emit the first light L1 and the second light L2 in the same direction (forward). By disposing (LED 9b) on the same surface of the housing 2, an increase in the number of light sources and an increase in size can be avoided.

  By the way, in the vehicular 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 the flow of light from the front to the rear, It is desirable to continuously connect light emission by the light L3 reflected by the tip surface 7b and light emission by the light L4 reflected by the cutout surface 7d across the boundary between the surface 7b and the cutout surface 7d.

Here, FIG. 6 shows a light source image when the light emitting surface 7e of the first light guide lens 7 emits light.
As shown in FIG. 6, the light emission by the light L3 reflected by the front end surface 7b is stronger than the light emission by the light L4 reflected by the cutout surface 7d, and the boundary between the front end surface 7b and the cutout surface 7d can be clearly seen.

  Therefore, in the present embodiment, for example, as illustrated in FIGS. 7A and 7B, the protruding portion 12 is provided on the distal end side of the first light guide lens 7. 7A is a side view of the front end of the first light guide lens 7 provided with the projecting portion 12 as viewed from the notch surface 7d side, and FIG. 7B is the notch surface 7d side. It is the side view seen from the orthogonal side.

  The protruding portion 12 is provided so as to protrude from the central portion of the notch surface 7d on the distal end surface 7b side. Moreover, the protrusion part 12 has a shape where the width | variety becomes small gradually toward the extending direction of the notch surface 7d from the front end surface 7b side. Further, the boundary between the tip surface 7b and the notch surface 7d has a shape curved along the rounded shape of the protrusion 12. Further, the first light guide lens 7 has a shape in which the distal end surface 7b and the notch 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 with respect to the first light guide lens 7 provided with such a protruding portion 12. In FIG.
As shown in FIG. 8, light emission by the light L3 reflected by the tip surface 7b and light emission by the light L4 reflected by the cutout surface 7d can be smoothly connected at the boundary between the tip surface 7b and the cutout surface 7d. Is possible.

  Thereby, in the vehicular lamp 1 according to 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. The visibility and design can be further improved.

  Note that a plurality of protrusions 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 distal end side of the first light guide lens 7. 9A is a side view of the front end of the first light guide lens 7 provided with the two projecting portions 12 when viewed from the notch surface 7d side, and FIG. 9B is the notch surface 7d side. And is a side view seen from the orthogonal side.

  Further, the projecting portion 12 may be configured to project from the front end surface 7b of the first light guide lens 7 to the notch surface 7d, as shown in FIGS. 10A and 10B, for example. . 10A is a side view of the first light guide lens 7 provided with the projecting portion 12 projecting from the front end surface 7b to the notch surface 7d, as viewed from the notch surface 7d side, and FIG. It is the side view seen from the side orthogonal to the notch surface 7d side.

(Second Embodiment)
Next, as a second embodiment of the present invention, for example, a vehicle lamp 1A shown in FIG. 11 will be described. FIG. 11 is a cross-sectional view showing the configuration of the vehicular lamp 1A. Moreover, in the following description, about the site | part equivalent to the said vehicle lamp 1, description is abbreviate | omitted and shall attach | subject the same code | symbol in drawing.

  As shown in FIG. 11, the vehicular lamp 1 </ b> A of the present embodiment has a third light source that emits a third light L <b> 6 toward the front in the lamp body 4 in addition to the configuration of the vehicular lamp 1. 13 and a third light guide lens 14 which is disposed in front of the third light source 13 and guides the third light L6.

  The 3rd light source 13 consists of several LED9c arrange | positioned outside several LED9b located around LED9a. As the third light source 13, the same light source as exemplified in the first and second light sources 5 and 6 described above can be used.

  The 3rd light guide lens 14 is a substantially cylindrical or semi-cylindrical light guide as a whole. The first and second light guide lenses 7 and 8 are arranged concentrically or semi-concentrically at a position surrounding the periphery of the second light guide lens 8. In addition, about the 3rd light guide lens 14, the thing of the same material illustrated with the 1st light guide lens 7 mentioned above can be used.

  The third light guide lens 14 includes a proximal end surface 14a located on the side facing the third light source 13, a distal end surface 14b located opposite to the proximal end surface 14a, and a proximal end surface 14a and a distal end surface 14b. It has an outer peripheral side surface 14c and an inner peripheral side surface 14d extending therebetween.

  The base end surface 14a constitutes an incident portion on which the third light L6 emitted from the third light source 13 enters. The incident part 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 part collimates or condenses the third light L6 incident on the base end surface 14a, the shape of the base end surface 14a can be changed as appropriate. Furthermore, the incident portion may have a configuration in which a lens, a prism, a reflector, or the like is disposed between the third light source 13 and the base end surface 14a.

  The tip surface 14b constitutes an emission surface that emits the third light L6 incident on the tip surface 14b. The distal end surface 14b is formed by a flat surface that is orthogonal to the traveling direction of the third light L6 that enters from the proximal end surface 14a and is guided toward the distal end surface 14b. Moreover, the light L3, L4, L5 (sub light distribution beam) emitted from the light emitting surface 8f described above is incident from the inner peripheral side surface 14d of the third light guide lens 14 and is output from the outer peripheral side surface 14c.

  The first lens 3a is provided with a light guide 15 for guiding the first light L1 to the outer lens 3 so as to protrude from a position facing the front end surface 7b of the first light guide lens 7. . The light guide unit 15 forms a convex lens in order to enlarge and project the first light L1. Other than that, it has basically the same configuration as the vehicular lamp 1 described above.

  As described above, in the vehicular lamp 1A of the present embodiment, as in the vehicular lamp 1, the main light distribution beams (first, second and third lights L1, L2) are directed forward from the outer lens 3. , L6), and by projecting the secondary light distribution beam (lights L3, L4, L5) from the outer lens 3 in a direction (side) different from the front, It is possible to produce an effect.

  In the vehicle lamp 1A of the present embodiment, the main light distribution beam (first, second and third lights L1, L2, L6) and the sub-distribution are directed in a direction (side) different from the front and the front. Visibility and design at the time of projecting a light beam (light L3, L4, L5) can be improved.

  Further, in the vehicular lamp 1A of the present embodiment, the width of the cutout surface 7d gradually decreases from the front end surface 7b of the first light guide 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 gradually decrease. Thereby, it is possible to produce the flow of light from the front to the rear by the lights L3 and L4 emitted from the light emitting surface 7e.

  Further, in the vehicular lamp 1A of the present embodiment, the first light source 5 (LED 9a) and the second light source 6 that emit the first light L1 and the second light L2 in the same direction (forward). By disposing (LED 9b) on the same surface of the housing 2, an increase in the number of light sources and an increase in size can be avoided.

  Furthermore, in the vehicle lamp 1A of the present embodiment, the protruding portion 12 is provided on the distal end side of the first light guide lens 7 in the same manner as the vehicle lamp 1 shown in FIGS. Is possible. Thereby, in 1 A of vehicle lamps of this embodiment, the continuous flow of the light which goes to the back from the front can be produced with the lights L3 and L4 radiate | emitted from the light emission surface 7e of the 1st light guide 7. FIG. The visibility and design can be further improved.

In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above-described embodiment, the first and second light beams L1 and L2 (main light distribution beams) emitted from the front end surfaces 7b and 8b of the first and second light guide lenses 7 and 8 are used as the vehicular lamp 1. The light L3, L4, and L5 (sub light distribution beams) projected from the light emitting surfaces 7e and 8f of the first and second light guide lenses 7 and 8 to the side of the vehicle lamp 1 Although the configuration for projecting toward the screen is illustrated, the configuration may be reversed. 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 light guides are projected. The first and second lights L1 and L2 emitted from the front end surfaces 7b and 8b of the optical lenses 7 and 8 may be projected toward the side of the vehicular lamp 1.

  The vehicle lamp to which the present invention is applied includes, for example, a headlamp (headlight), a taillamp (taillight), a vehicle width lamp (position lamp), an auxiliary headlamp (sub headlamp), and a front portion (rear portion). Applicable to any vehicle lamp such as fog lamp (fog lamp), daytime running lamp, lid lamp, brake lamp (stop lamp), back lamp, turn indicator (winker lamp), etc. .

  DESCRIPTION OF SYMBOLS 1,1A ... Vehicle lamp 2 ... Housing 3 ... Outer lens 3a ... 1st lens 3b ... 2nd lens 4 ... Lamp body 5 ... 1st light source 6 ... 2nd light source 7 ... 1st light guide lens (Light guide) 7a ... Base end face (incident part) 7b ... Tip face (outgoing face, reflecting face) 7c ... Outer peripheral face 7d ... Notch face (reflecting face) 7e ... Light emitting face (outgoing face) 7f ... Curved face 8 ... First 2 light guide lens (light guide) 8a: proximal end surface (incident part) 8b ... distal end surface (outgoing surface, reflecting surface) 8c ... outer peripheral side surface 8d ... inner peripheral side surface 8e ... notched surface (reflecting 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 face (incident part) 14b ... Tip end surface (outgoing surface) 14c ... Outer peripheral side 14d ... Inner peripheral side 15 Light guide L1 First light (main light distribution beam) L2 Second light (main light distribution beam) L3, L4, L5 Sub light distribution beam L6 Third light (main light distribution beam)

Claims (12)

A light source;
A light guide for guiding the light emitted from the light source,
The light guide includes a base end face located on the side facing the light source, a tip end face located on the opposite side of the base end face, and an outer periphery extending between the base end face and the tip end face. A side surface, a notch 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 from the notched surface; Have
The tip surface is inclined at an angle that reflects at least part of the light incident on the tip surface toward the light emitting surface;
The vehicular lamp, wherein the cut surface is inclined at an angle that reflects at least a part of light incident on the cut surface toward the light emitting surface.   2. The tip surface is inclined at a larger angle than the notch surface with respect to a traveling direction of light incident from the base end surface and guided toward the tip surface. The vehicle lamp as described in 2.   The vehicular lamp according to claim 1, wherein the light guide has a protruding portion that protrudes from the front end surface side of the cutout surface.   4. The vehicular lamp according to claim 3, wherein a boundary between the front end surface and the notch surface has a shape curved along a shape of the protruding portion.   The vehicular lamp according to claim 3 or 4, wherein a plurality of the protruding portions are provided side by side in the circumferential direction of the light guide.   The said light guide has the shape which connected between the said front end surface and the said notch surface with the continuous curved surface in the both sides which pinched | interposed the said protrusion part, The any one of Claims 3-5 characterized by the above-mentioned. The vehicle lamp as described in 2. The light guide is substantially cylindrical,
The vehicular lamp according to any one of claims 1 to 6, wherein the notch surface has a shape in which a width gradually decreases from the front end surface toward an extending direction of the outer peripheral side surface.   The cut-out surface has a plurality of reflection cuts that reflect light L incident on the cut-out surface at an angle that is less than a critical angle with respect to the light-emitting surface. The vehicle lamp as described in 2.   9. The plurality of reflection cuts are adjusted such that the amount of light reflected by the reflection cuts gradually decreases from the front end surface toward the extending direction of the outer peripheral side surface. The vehicle lamp as described.   10. The apparatus according to claim 1, further comprising a first lens that is disposed on a side of the light guide opposite to the tip surface and projects light emitted from the tip surface. The vehicle lamp as described.   11. The apparatus according to claim 1, further comprising: a second lens that is disposed on a side of the light guide opposite to the light emitting surface and projects light emitted from the light emitting surface. The vehicle lamp as described. The vehicular lamp according to claim 11, wherein the first lens and the second lens are integrally formed.