JP2017228401A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture that can direct a flow of light traveling to behind a vehicle and is superior in visibility and designability.SOLUTION: A vehicular lighting fixture has: a light source 2 which emits light L1 forward; an optical path conversion part 6 which is arranged in front of the light source 2, and reflects and converts the light L1 emitted from the light source 2 into light L2 traveling backward; a light guide member 5 which is arranged behind the optical path conversion part 6, and guides the light traveling backward from the optical path conversion part 6; and a light shield part 4 which is arranged more inside than the light guide member 5, and cuts off the light L1 traveling forward from the light source 2 and the light L2 traveling backward from the optical path conversion part 6. The light guide member 5 has an incidence plane 9 that the light L2 traveling backward from the optical path conversion part 6 impinges on as a front face; an emission plane 10 which emits sideward the light L2 entering from the incidence plane 9 as an outer face; and a light reflection part 11 which reflects the light entering from the incidence plane 9 toward the emission plane 10 as an inner face.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicular lamp.

  Conventionally, as a vehicular lamp, there is a vehicular headlamp (head lamp) mounted in front of the vehicle (see, for example, Patent Document 1). The vehicle headlamp includes a light source and a projection lens that projects light emitted from the light source toward the front of the vehicle. Various types of such vehicular lamps have been developed by diversifying designs.

JP-A-2015-79660

  However, the conventional vehicular lamp generally projects light emitted from the above-described light source toward the front of the vehicle by a projection lens. For this reason, when it is going to project light in the direction (for example, side) where the front of a vehicle differs from the front of a vehicle with one vehicular lamp, it is necessary to add a light source toward different directions. 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 and the front.

  For example, when a light flow directed toward the rear of the vehicle is to be produced by light projected toward the side of the vehicle, light is directed toward the rear side of the vehicle from a light source disposed on the front side of the vehicle lamp. It is necessary to emit. However, if the light source is arranged on the front side of the vehicle lamp, not only the appearance is deteriorated due to the wiring and the like, but also the side of the projection lens is secured to ensure the visibility of the light projected toward the front of the vehicle. As a result, the light source jumps out of the shape.

  The present invention has been proposed in view of such conventional circumstances, and can provide a vehicular lamp that can produce a flow of light toward the rear of the vehicle and that is excellent in visibility and design. The purpose is to provide.

In order to achieve the above object, the present invention provides the following means.
[1] a light source that emits light forward;
An optical path conversion unit that is disposed in front of the light source, reflects a part of the light emitted from the light source, and converts the light to the backward direction;
A light guide member that is disposed behind the optical path conversion unit and guides light traveling backward from the optical path conversion unit; and
A light-shielding part that is disposed on the inner side of the light guide member and shields light between the light source traveling forward from the light source and the light traveling backward from the optical path conversion unit;
The light guide member includes an incident surface on the front surface on which light traveling backward from the optical path conversion unit is incident, an exit surface on the outer surface for emitting light incident from the incident surface toward the side, and an incident surface on the inner surface. And a light reflecting portion for reflecting the light incident from the light toward the light exit surface.
[2] The optical path conversion unit has a first reflection surface and a second reflection surface facing each other at right angles,
[1], wherein a part of the light emitted from the light source is reflected between the first reflective surface and the second reflective surface, and converted into light directed backward. The vehicle lamp as described.
[3] A projection lens that projects the light emitted from the light source forward.
The vehicular lamp according to [1] or [2], wherein the optical path conversion unit is disposed on a side of the projection lens.
[4] The vehicular lamp according to [3], wherein the optical path conversion unit is formed integrally with any one of the projection lens and the light guide member.
[5] The vehicle according to [3], wherein the first reflecting surface is formed integrally with the projection lens, and the second reflecting surface is formed integrally with the light guide member. Lamps.
[6] A light guide member for a main beam that is disposed between the light source and the projection lens and guides light emitted from the light source toward the projection lens. The vehicle lamp according to any one of 3] to [5].
[7] The vehicular lamp according to any one of [3] to [6], wherein the light shielding portion includes a light shielding member that shields a periphery between the light source and the projection lens. .
[8] The light source is disposed integrally with the light shielding member,
The vehicular lamp according to [7], wherein the light shielding member includes a heat radiating portion that radiates heat generated by the light source.
[9] The vehicular lamp according to [7] or [8], wherein the light blocking member includes a reflector portion that reflects the light emitted from the light source toward the projection lens.
[10] The sub-beam light guide member, which is disposed on the inner side of the light shielding unit and guides a part of the light emitted from the light source toward the optical path conversion unit, The vehicle lamp according to any one of [1] to [9].
[11] The vehicular lamp according to any one of [1] to [10], wherein the light shielding portion is provided on an inner surface of the light guide member.
[12] The vehicular lamp according to [6], wherein the light blocking portion is provided on an outer surface of the light guide member for the main beam.
[13] The vehicular lamp according to [10], wherein the light shielding portion is provided on an outer surface of the light guide member for the sub beam.
[14] The optical system according to any one of [1] to [13], further including a light guide unit configured to guide a part of light incident on the optical path conversion unit toward the projection lens. Vehicle lamp.
[15] The light source includes a first light source unit that emits light toward the projection lens, and a second light source unit that emits light toward the optical path conversion unit. The vehicle lamp according to any one of [1] to [14].
[16] The above-mentioned [1] to [15], further comprising a side lens disposed on a side of the light guide member and projecting the light emitted from the emission surface toward the side. The vehicle lamp according to any one of the above.
[17] The vehicular lamp according to [16], wherein the side lens includes a light reflecting portion that reflects light emitted from the emission surface toward the side.

  As described above, according to the present invention, it is possible to produce a flow of light toward the rear of the vehicle, and to provide a vehicular lamp that is excellent in visibility and design.

It is a disassembled perspective view which shows the structure of the vehicle lamp which concerns on the 1st Embodiment of this invention. It is sectional drawing of the vehicle lamp shown in FIG. It is a disassembled perspective view which shows another structural example of the vehicle lamp shown in FIG. It is sectional drawing which shows the example which applied the vehicle lamp shown in FIG. 1 to the vehicle headlamp. It is sectional drawing to which some side lenses with which the vehicle headlamp shown in FIG. 4 is provided were expanded. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 4th Embodiment of this invention. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 5th Embodiment of this invention. It is the perspective view which looked at the vehicle lamp shown in FIG. 9 from the front side. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 6th Embodiment of this invention. It is sectional drawing which shows the structure of the vehicle lamp which concerns on the 7th 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 and 2 will be described. FIG. 1 is an exploded perspective view showing the configuration of the vehicular lamp 1. FIG. 2 is a cross-sectional view showing the configuration of the vehicular lamp 1. 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.

  As shown in FIGS. 1 and 2, the vehicular lamp 1 of the present embodiment is disposed around the light source 2, the projection lens 3 disposed in front of the light source 2, and between the light source 2 and the projection lens 3. The light shielding member 4, the light guide member 5 disposed on the side of the light shielding member 4, and the optical path conversion unit 6 disposed on the side of the projection lens 3 are roughly provided.

  The light source 2 has a configuration in which a plurality of light emitting diodes (LEDs) 7 are mounted on the surface of the circuit board 8. The light source 2 emits the light L1 emitted from each LED 7 radially in a direction parallel to each other (front).

  In the present embodiment, the above-described LED 7 is used as the light source 2. However, the type of the light source 2 is not particularly limited, and for example, a laser diode (LD) or an organic EL (OLED) is used. ) And other lamps such as halogen lamps and HID lamps that are generally used in the past can also be used. Also, the arrangement and number of the light sources 2 can be appropriately changed. Furthermore, the color of the light L1 emitted from the light source 2 is not limited to white light, and can be appropriately changed according to the use of the vehicular lamp 1 such as orange light and red light.

  The projection lens 3 is composed of a spherical lens, and projects the light L1 emitted from the light source 2 in an enlarged manner toward the front. The shape of the projection lens 3 is not limited to the sphere described above, and can be changed as appropriate. Further, the projection lens 3 is not limited to the above-described single lens, but may be configured by a compound lens in which a plurality of lenses are combined.

  The light shielding member 4 has a cylindrical shape, and is arranged in a state where the central axis thereof coincides with the optical axis of the light L <b> 1 emitted from the light source 2. The light shielding member 4 shields the periphery between the light source 2 and the projection lens 3 as a light shielding portion. As the light shielding member, a member made of a material that shields the light L1 itself, a member having a light shielding property on its outer peripheral surface or inner peripheral surface, or the like can be used.

  The light guide member 5 has a cylindrical shape as a whole, and is arranged in a state in which the central axis thereof coincides with the optical axis of the light L1 emitted from the light source 2. The light shielding member 4 is concentrically arranged inside the light guide member 5 with the center axes thereof being matched. In addition, about the light guide member 5, the thing of a material with a refractive index higher than air, such as transparent resin and glass, such as a polycarbonate and an acryl, can be used, for example.

  The light guide member 5 is disposed at a position surrounding the periphery of the light shielding member 4 in a state of being divided into a plurality of optical blocks 5a in the circumferential direction. In addition, in this embodiment, although the light guide member 5 becomes a structure equally divided | segmented into the four optical blocks 5a, it does not specifically limit about the number of the optical blocks 5a divided | segmented into plurality. Moreover, the light guide member 5 can be divided not only evenly but also unevenly.

  Each optical block 5a constituting the light guide member 5 guides a part of light (hereinafter referred to as outer peripheral light) L2 emitted from the light source 2, and travels backward from the optical path conversion unit 6 to the front surface. A first incident surface 9 on which the outer peripheral light L2 is incident, a first emission surface 10 that emits the outer peripheral light L2 incident on the outer surface from the first incident surface 9 toward the side, and a first incident on the inner surface. A light reflecting portion 11 that reflects the outer peripheral light L2 incident from the surface 9 toward the first emitting surface 10;

  Further, the light reflecting portion 11 has a plurality of reflection cuts 11 a arranged in the front-rear direction, and the first light exit surface 10 transmits the peripheral light L2 guided inside the light guide member 5 by the plurality of reflection cuts 11 a. Reflects towards (total). At this time, the shape and the like of the reflection cut 11a are adjusted so that the luminous intensity of the outer peripheral light L2 emitted from the first emission surface 10 gradually decreases from the front to the rear.

  In the present embodiment, the case where the reflective cut 11a is configured by a groove having a triangular cross section is illustrated, but the shape of the reflective cut 11a is not particularly limited and can be changed as appropriate. It is.

  Further, the light guide member 5 is not limited to the configuration in which the plurality of optical blocks 5a described above are arranged around the light shielding member 4 over the entire circumference. For example, as illustrated in FIG. A configuration in which one (or a plurality of) optical blocks 5a are arranged along the side surface is also possible.

  Moreover, in the light guide member 5, since the direction of the outer peripheral light L2 emitted from the first emission surface 10 is changed, the shape, angle, and the like of the first emission surface 10 can be changed as appropriate. Further, the reflection cut 11a in the light reflecting portion 11 may be adjusted according to the shape, angle, and the like of the first emission surface 10.

  The optical path conversion unit 6 is composed of a ring-shaped prism body integrally formed around the projection lens 3. The optical path conversion unit 6 has a second incident surface 12 on which the outer peripheral light L2 from the light source 2 is incident on the rear surface side, a second emission surface 13 that emits the outer peripheral light L2 rearward, and an optical path conversion on the front surface side. It has the 1st reflective surface 14a and the 2nd reflective surface 14b which convert the direction of the peripheral light L2 light-guided inside the part 6. FIG.

  The second incident surface 12 is located on the inner peripheral side of the rear surface, and is configured by a flat surface orthogonal to the optical axis of the light L1 emitted from the light source 2. The 2nd output surface 13 is located in the outer peripheral side of a front surface, and is comprised by the flat surface orthogonal to the optical axis of the light L1 radiate | emitted from the light source 2. As shown in FIG. Further, the first incident surface 9 of each optical block 5 a is disposed to face the second emission surface 13.

  The first reflecting surface 14a is located on the inner peripheral side of the front surface, and is configured by an inclined surface that is inclined at about 45 ° toward the front. The second reflecting surface 14b is an inclined surface that is located on the outer peripheral side of the front surface and is inclined at about 45 ° toward the rear. That is, the first reflecting surface 14a and the second reflecting surface 14b are constituted by prism surfaces whose apex angles are substantially right angles (about 90 °).

  In the optical path conversion unit 6, the outer light L <b> 2 incident from the second incident surface 12 is reflected by the first reflecting surface 14 a and the second reflecting surface 14 b, and then the light guide member 5 behind the second emitting surface 13. Exit toward Thereby, the direction of the outer peripheral light L2 can be converted 180 degrees from the front to the rear. That is, in this vehicular lamp 1, the direction of the light L1 emitted forward from the light source 2 and the outer peripheral light L2 reflected rearward by the optical path conversion unit 6 is reversed with the light shielding member 4 interposed therebetween. It is facing. The light blocking member 4 blocks light between the lights L1 and L2 traveling in the different directions.

  The optical path conversion unit 6 can be formed integrally with the light guide member 4 instead of being formed integrally with the projection lens 3 described above. In addition, the optical path conversion unit 6 is not limited to the configuration formed integrally with the projection lens 3 or the light guide member 4, and may be formed separately from the projection lens 3 and the light guide member 4 as an optical path conversion member. Is possible. In addition, the optical path conversion unit 6 is not limited to the prism body described above, but includes a first reflecting plate that forms the first reflecting surface 14a and a second reflecting plate that forms the second reflecting surface 14b. It is also possible.

  In the vehicular lamp 1 having the above-described configuration, the light L1 emitted from the light source 2 is projected forward by the projection lens 3 as a main beam. On the other hand, in the vehicular lamp 1, a part of light (outer peripheral light) L <b> 2 emitted from the light source 2 is reflected rearward by the optical path conversion unit 6 as a sub beam, and the outer peripheral light L <b> 2 is reflected by the light guide member 5. , The first light exit surface 10 of each optical block 5a is caused to emit light as the light emitting surface S.

  As a result, in the vehicular lamp 1 of the present embodiment, apart from projecting the main beam (light L1) forward from the projection lens 3, the sub-beams (outer periphery) are directed laterally from the plurality of light emitting surfaces S. By projecting the light L2), it is possible to produce a stereoscopic light.

  Furthermore, in the vehicular lamp 1 according to the present embodiment, a part of the light L1 emitted from the light source 2 toward the front (outer peripheral light L2) is reflected rearward by the optical path conversion unit 6 to the light guide member 5. Thus, the luminous intensity of the outer peripheral light L2 emitted from the first emission surface 10 is forward in the light emission surface S of each optical block 5a without arranging another light source on the front side of the vehicle lamp 1. It is possible to produce a flow of light toward the rear of the vehicle that gradually decreases from the rear toward the rear.

  That is, the effect of such a light flow is that the outer peripheral light L2 incident from the first incident surface 9 located on the front surface of each optical block 5a and reflected rearward is reflected by the light reflecting portion 11. This is caused by gradually losing the light amount from the front to the rear.

  Further, in the vehicle lamp 1 of the present embodiment, the light shielding member 4 shields between the light L1 traveling forward from the light source 2 and the outer peripheral light L2 traveling rearward from the optical path conversion unit 6, so that these light L 1, It is possible to prevent L2 from interfering with each other and hindering the above-described effect of the flow of light toward the rear of the vehicle.

  As described above, in the vehicular lamp 1 according to the present embodiment, it is possible to produce a stereoscopic effect by light emission from the plurality of light emitting surfaces S and to produce a flow of light toward the rear. Further, in the vehicular lamp 1 according to the present embodiment, the visibility when projecting the lights L1 and L2 in a direction (side or the like) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. In addition, the design can be improved.

  Next, the case where the said vehicle lamp 1 is applied to the vehicle headlamp 100 as shown, for example in FIG. 4 is demonstrated. FIG. 4 is a cross-sectional view showing the configuration of the vehicle headlamp 100. Moreover, in FIG. 4, since the vehicle headlamp 100 has an axially symmetric shape, only the half of the axially symmetric shape is illustrated. 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. 4, the vehicle headlamp 100 according to the present embodiment schematically includes a side lens 15 disposed on the side of the light guide member 5 in addition to the configuration of the vehicle lamp 1. .

  The side lens 15 includes a plurality of light guide fins 15 a, and the plurality of light guide fins 15 a are arranged radially in the circumferential direction of the light guide member 5. In addition, about the light guide fin 15a, the thing of the same material illustrated by the light guide member 5 mentioned above can be used.

  Each light guide fin 15a has a third incident surface 16 on which the outer peripheral light L2 is incident on the inner end surface, and a third output surface 17a that emits the outer peripheral light L2 obliquely forward and sideward on the outer end surface. 17b. In addition, the 3rd output surface 17a also has a function as a reflective surface which reflects a part of outer periphery light L2 which injected from the 3rd incident surface 16 to the back side of the light guide fin 15a.

  Further, for example, a light reflecting portion 18 as shown in FIG. 5 is provided on the side surface of the light guide fin 15a. The light reflecting portion 18 includes a plurality of reflection cuts 18a arranged in the front-rear direction, and the plurality of reflection cuts 18a directs the outer peripheral light L2 guided inside the light guide fins 15a to the side (all). reflect.

  In the present embodiment, the case where the reflective cut 18a is configured by a groove portion having a triangular cross section and the groove portions are arranged with a certain distance therebetween is exemplified, but the shape and the like of the reflective cut 18a are particularly limited. It is not a thing and it can change suitably.

  In the vehicle headlamp 100 having the above configuration, the light L1 emitted from the light source 2 is projected as a main beam toward the front of the vehicle by the projection lens 3. In this case, the light L1 projected in front of the vehicle forms a light distribution pattern corresponding to a traveling beam (high beam), a passing beam (low beam), and the like.

  On the other hand, in this vehicle headlamp 100, a part of light (outer peripheral light) L2 emitted from the light source 2 is reflected backward as an auxiliary beam by the optical path conversion unit 6, and the outer peripheral light L2 is guided. The outer peripheral light L2 is projected from the side of the vehicle obliquely rearward by the side lens 15 while being guided by the member 5.

  At this time, the first light emission surface 10 of each optical block 5a is caused to emit light as the light emission surface S. Further, each light guide fin 15 a constituting the side lens 15 emits light with the third emission surfaces 17 a and 17 b as the light emission surface S. Thereby, in the vehicle headlamp 100 of this embodiment, it is possible to produce a stereoscopic effect by the light emission of these light emitting surfaces S. Moreover, the flow of light can be produced by the peripheral light L2 projected toward the rear of the vehicle.

  Therefore, in the vehicle headlamp 100 of the present embodiment, as in the vehicle lamp 1, the stereoscopic effect is produced by the light emission of the plurality of light emitting surfaces S and the flow of light toward the rear of the vehicle is produced. Is possible. Further, in the vehicle headlamp 100 according to the present embodiment, the light L1 and L2 are projected in a direction (side, etc.) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. Visibility and design can be 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.

(Second Embodiment)
Next, for example, a vehicle lamp 1A shown in FIG. 6 will be described as a second embodiment of the present invention. FIG. 6 is a cross-sectional view showing the configuration of the vehicular lamp 1A. Further, in FIG. 6, since the vehicular lamp 1A has an axisymmetric shape, only the half of the axisymmetric shape is illustrated. Furthermore, 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. 6, in the vehicle lamp 1 </ b> A of the present embodiment, the first reflection surface 14 a is formed integrally with the projection lens 3 and the second reflection surface 14 b is guided in the optical path conversion unit 6. The structure is formed integrally with the member 5. Further, since the second reflecting surface 14b is formed integrally with the light guide member 5, the first incident surface 9 and the second emitting surface 13 are omitted.

  In the vehicular lamp 1A having the above-described configuration, the light L1 emitted from the light source 2 is projected forward by the projection lens 3 as a main beam. On the other hand, in this vehicular lamp 1A, a part of light (outer peripheral light) L2 emitted from the light source 2 is reflected rearward by the optical path conversion unit 6 as a sub beam, and the outer peripheral light L2 is reflected by the light guide member 5 , The first light exit surface 10 of each optical block 5a is caused to emit light as the light emitting surface S.

  Thereby, in 1 A of vehicle lamps of this embodiment, it is possible to produce a three-dimensional effect by light emission of a plurality of light emitting surfaces S and to produce a flow of light toward the rear as in the case of the vehicle lamp 1 described above. is there. Further, in the vehicular lamp 1A according to the present embodiment, the visibility when projecting the lights L1 and L2 in a direction (such as a side) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. In addition, the design can be improved.

(Third embodiment)
Next, for example, a vehicle lamp 1B shown in FIG. 7 will be described as a third embodiment of the present invention. FIG. 7 is a cross-sectional view showing the configuration of the vehicular lamp 1B. Further, in FIG. 7, since the vehicular lamp 1B has an axisymmetric shape, only the half of the axisymmetric shape is illustrated. Furthermore, 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 illustrated in FIG. 7, the vehicular lamp 1 </ b> B according to the present embodiment includes a light shielding portion 4 </ b> A that shields the inner peripheral surface of the light guide member 5 instead of the light shielding member 4. The light shielding portion 4 </ b> A shields light from the light reflecting portion 11 of the light guide member 5 by providing a light shielding film, a reflective film, or the like on the inner peripheral surface of the light guide member 5, or reflects light from the light guide member 5. The ambient light L2 is reflected between the unit 11 and the part 11.

  In the vehicular lamp 1B having the above-described configuration, the light L1 emitted from the light source 2 is projected forward by the projection lens 3 as a main beam. On the other hand, in this vehicular lamp 1B, a part of light (outer peripheral light) L2 emitted from the light source 2 is reflected rearward by the optical path conversion unit 6 as a sub beam, and the outer peripheral light L2 is reflected by the light guide member 5. , The first light exit surface 10 of each optical block 5a is caused to emit light as the light emitting surface S.

  Thereby, in the vehicular lamp 1B of the present embodiment, as in the vehicular lamp 1, it is possible to produce a stereoscopic effect by the light emission of the plurality of light emitting surfaces S and to produce the flow of light toward the rear. is there. Further, in the vehicular lamp 1B of the present embodiment, the visibility when projecting the lights L1 and L2 in a direction (such as a side) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. In addition, the design can be improved.

(Fourth embodiment)
Next, for example, a vehicle lamp 1C shown in FIG. 8 will be described as a fourth embodiment of the present invention. FIG. 8 is a cross-sectional view showing the configuration of the vehicular lamp 1C. Further, in FIG. 8, since the vehicular lamp 1C has an axisymmetric shape, only the half of the axisymmetric shape is illustrated. Furthermore, 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. 8, the vehicular lamp 1C according to the present embodiment is arranged in front of the light source 2 in addition to the configuration of the vehicular lamp 1, and is located at the center of the plurality of LEDs 7a and 7b. (Hereinafter, it is referred to as a first light source part.) A light guide member 19 for main beam that guides light L1 emitted from 7a is provided.

  The light guide member 19 has a cylindrical shape, and is arranged in a state in which the central axis thereof coincides with the optical axis of the light L1. In addition, the light guide member 19 is disposed concentrically inside the light guide member 5 in a state in which the center axes thereof coincide with each other. In addition, about the light guide member 19, the thing of the same material illustrated by the light guide member 5 mentioned above can be used. In addition, the light guide member 19 is not limited to the columnar shape such as the above-described columnar shape, and may be a linear shape such as an optical fiber.

  The light guide member 19 has a fourth incident surface 20 on which light L1 is incident on the rear surface, and a fourth emission surface 21 that emits light L1 forward on the front surface. The fourth incident surface 20 and the fourth emission surface 21 are each configured by a flat surface, but may be configured by, for example, a lens surface or a prism surface. Further, since the fourth emission surface 20 forms a passing (low beam) light distribution pattern including a cut-off line, the fourth emission surface 20 may be configured to include a groove shape or a step shape corresponding to the cut-off line.

  As shown in FIG. 8, the vehicular lamp 1C according to the present embodiment, instead of the light blocking member 4, is a peripheral LED (hereinafter referred to as a second light source unit) 7b among a plurality of LEDs 7a and 7b. The light guide member 22 for the sub-beam that guides the light (outer peripheral light) L2 emitted from the light source, and the light shielding portion 23 that shields the outer peripheral surface of the light guide member 22.

  The light guide member 22 has a cylindrical shape, and is arranged in a state in which the central axis thereof coincides with the optical axis of the light L <b> 1 emitted from the light source 2. The light guide member 22 is disposed concentrically inside the light guide member 5 and outside the light guide member 19 with the center axes of the light guide members 22 aligned with each other.

  The light guide member 22 has a fifth incident surface 24 on which the outer peripheral light L2 is incident on the rear surface, and a fifth emission surface 25 that emits the outer peripheral light L2 forward on the front surface. The fifth entrance surface 24 and the fifth exit surface 25 are each formed of a flat surface. Further, the fifth exit surface 25 is disposed to face the second entrance surface 12. In addition, about the light guide member 22, the thing of the same material illustrated by the light guide member 5 mentioned above can be used.

  The light shielding unit 23 shields light between the light guide member 22 and the light guide member 5 by providing a light shielding film, a reflective film, or the like on the outer peripheral surface of the light guide member 22, or the light guide member 22 and the light guide member. 5 to reflect the ambient light L2.

  In the vehicular lamp 1C having the above-described configuration, the light L1 emitted from the first light source unit 7a is guided as a main beam by the light guide member 19, and then projected forward by the projection lens 3. . On the other hand, in this vehicular lamp 1C, after the outer peripheral light L2 emitted from the second light source unit 7b is guided by the light guide member 22 as a sub beam, it is reflected backward by the optical path conversion unit 6, While the peripheral light L2 is guided by the light guide member 5, the first emission surface 10 of each optical block 5a is caused to emit light as the light emission surface S.

  Thereby, in the vehicle lamp 1C of the present embodiment, it is possible to produce a stereoscopic effect by the light emission of the plurality of light emitting surfaces S and produce the flow of light toward the rear as in the vehicle lamp 1 described above. is there. Further, in the vehicular lamp 1C according to the present embodiment, the visibility when projecting the lights L1 and L2 in a direction (such as a side) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. In addition, the design can be improved.

(Fifth embodiment)
Next, as a fifth embodiment of the present invention, for example, a vehicle lamp 1D shown in FIGS. 9 and 10 will be described. FIG. 9 is a cross-sectional view showing the configuration of the vehicular lamp 1D. In FIG. 9, since the vehicular lamp 1D has an axisymmetric shape, only the half of the axisymmetric shape is illustrated. Furthermore, 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 FIGS. 9 and 10, the vehicular lamp 1 </ b> D of the present embodiment is positioned between the projection lens 3 and the optical path conversion unit 6 in addition to the configuration of the vehicular lamp 1. 6 includes a plurality of light guide portions 26 that guide part of the outer peripheral light L2 incident to the light 6 (hereinafter referred to as inner peripheral light) L3 toward the projection lens 3.

  The plurality of light guides 26 are arranged radially in the circumferential direction, and are provided to project forward from between the projection lens 3 and the optical path conversion unit 6. Each light guide unit 26 includes a third reflecting surface 27 that reflects the inner peripheral light L3 incident from the second incident surface 12 toward the inner peripheral side, and an inner periphery that is reflected by the third reflecting surface 27. A sixth emission surface 28 for emitting the light L3 toward the projection lens 3;

  Further, the vehicular lamp 1 </ b> D of the present embodiment includes a light source 2 </ b> A provided with a light distribution control unit 29 instead of the light source 2. The light distribution control unit 29 includes an optical member such as a lens disposed in front of the LED 7 and controls the light distribution of the light L1 emitted from the LED 7 so that the light L1 emitted from the LED 7 becomes parallel light, for example.

  In the vehicular lamp 1D having the above-described configuration, the light L1 emitted from the light source 2 is projected forward by the projection lens 3 as a main beam. On the other hand, in this vehicular lamp 1D, a part of light (outer peripheral light) L2 emitted from the light source 2 is reflected rearward by the optical path conversion unit 6 as a sub beam, and the outer peripheral light L2 is reflected by the light guide member 5. , The first light exit surface 10 of each optical block 5a is caused to emit light as the light emitting surface S. Further, the inner peripheral light L3 emitted from the sixth exit surface 28 is reflected by the surface of the projection lens 3, thereby projecting the inner peripheral light L3 forward.

  Thereby, in the vehicular lamp 1D of the present embodiment, as in the vehicular lamp 1, it is possible to produce a stereoscopic effect by light emission from the plurality of light emitting surfaces S and to produce a flow of light toward the rear. is there. Further, in the vehicular lamp 1D according to the present embodiment, the visibility when the lights L1 and L2 are projected in a direction (such as a side) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. In addition, the design can be improved.

(Sixth embodiment)
Next, for example, a vehicle lamp 1E shown in FIG. 11 will be described as a sixth embodiment of the present invention. In addition, FIG. 11 is sectional drawing which shows the structure of the vehicle lamp 1E. Further, in FIG. 11, since the vehicular lamp 1E has an axisymmetric shape, only the half of the axisymmetric shape is illustrated. Furthermore, 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.

  A vehicular lamp 1E according to the present embodiment includes a light shielding member 4B as shown in FIG. The light shielding member 4B is configured so as to be integrated with the light source 2. The light shielding member 4B is configured to reflect the light L1 emitted from the light source 2 toward the projection lens 3, and to dissipate heat generated by the light source 2. Part 31.

  As described above, in the vehicular lamp 1C of the present embodiment, not only the same effect as the vehicular lamp 1 can be obtained, but also functions other than the light blocking can be added to the light blocking member 4B.

(Seventh embodiment)
Next, for example, a vehicle lamp 1F shown in FIG. 12 will be described as a seventh embodiment of the present invention. In addition, FIG. 12 is sectional drawing which shows the structure of the vehicle lamp 1F. In FIG. 12, since the vehicular lamp 1F has an axisymmetric shape, only the half of the axisymmetric shape is illustrated. Furthermore, 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. 12, the vehicle lamp 1 </ b> F of the present embodiment includes an LD 34 that emits laser light as a first light source unit 32 that emits light L <b> 1 toward the projection lens 3, and laser light emitted by the LD 34. A plurality of (two in this example) reflecting elements 35a and 35b led to the projection lens 3 are provided. On the other hand, an LED 37 is provided as the second light source unit 36 that emits the peripheral light L2 toward the light guide member 5.

  Further, the vehicular lamp 1F of the present embodiment includes a compound lens 3A in which a plurality of (three in this example) lenses 3a, 3b, and 3c are combined instead of the projection lens 3. Among these, the rear lens 3 a is formed integrally with the light guide 38 that guides the outer peripheral light) L 2, and the intermediate lens 3 b is formed integrally with the optical path conversion unit 6.

  In the vehicular lamp 1F having the above-described configuration, the light L1 emitted from the first light source unit 32 (LD34) is reflected as a main beam by the plurality of reflecting elements 35a and 35b and then forward by the projection lens 3. Project toward. On the other hand, in this vehicular lamp 1F, after the outer peripheral light L2 emitted from the second light source unit 36 (LED 37) is guided by the light guide 38 as a sub beam, it is reflected backward by the optical path conversion unit 6. Then, the first light exit surface 10 of each optical block 5a is caused to emit light as the light emitting surface S while guiding the peripheral light L2 with the light guide member 5.

  Thereby, in the vehicle lamp 1F of this embodiment, it is possible to produce a stereoscopic effect by the light emission of the plurality of light emitting surfaces S and to produce the flow of light toward the rear, as in the vehicle lamp 1 described above. is there. Further, in the vehicular lamp 1F according to the present embodiment, the visibility when projecting the lights L1 and L2 in a direction (such as a side) different from the front and the front while avoiding an increase in the number of light sources and an increase in size. In addition, the design can be improved.

  The present invention is not limited to the vehicular lamp applied to the above-described vehicular headlamp (head lamp). For example, the tail lamp (tail lamp), the vehicle width lamp (position lamp), and the auxiliary headlamp (sub headlamp) are used. ), Front (rear) fog lights (fog lamps), daytime running (daytime running) lamps, lid lamps, brake lamps (stop lamps), back lamps, turn indicators (winker lamps), etc. It may be a lamp.

  DESCRIPTION OF SYMBOLS 1,1A-1F ... Vehicle lamp 2, 2A ... Light source 3 ... Projection lens 3A ... Compound lens 4, 4A, 4B ... Light-shielding member (light-shielding part) 5 ... Light guide member 5a ... Optical block 6 ... Optical path conversion part 7 ... LED 7a ... 1st light source part 7b ... 2nd light source part 8 ... Circuit board 9 ... 1st incident surface 10 ... 1st output surface 11 ... Light reflection part 12 ... 2nd incident surface 13 ... 2nd Outgoing surface 14a ... 1st reflecting surface 14b ... 2nd reflecting surface 15 ... Side lens 15a ... Light guide fin 16 ... 3rd entrance surface 17a, 17b ... 3rd emitting surface 18 ... Light reflection part 19 ... Main Light guide member 20 for beam 20... 4th entrance surface 21. 4th exit surface 22. Light guide member for sub beam 23... Light-shielding portion 24. 5th entrance surface 25. Optical part 27 ... Third reflecting surface 28 ... Sixth exit surface 29 ... Light distribution control Part 30 ... Reflector part 31 ... Heat radiation part 32 ... First light source part 33 ... LD 35a, 35b ... Reflective element 36 ... Second light source part 37 ... LED 38 ... Light guide body 100 ... Vehicle headlamp L1 ... Light L2 ... Outer light L3 ... Inner light S ... Light emitting surface

Claims (17)

A light source that emits light toward the front;
An optical path conversion unit that is disposed in front of the light source, reflects a part of the light emitted from the light source, and converts the light to the backward direction;
A light guide member that is disposed behind the optical path conversion unit and guides light traveling backward from the optical path conversion unit; and
A light-shielding part that is disposed on the inner side of the light guide member and shields light between the light source traveling forward from the light source and the light traveling backward from the optical path conversion unit;
The light guide member includes an incident surface on the front surface on which light traveling backward from the optical path conversion unit is incident, an exit surface on the outer surface for emitting light incident from the incident surface toward the side, and an incident surface on the inner surface. And a light reflecting portion for reflecting the light incident from the light toward the light exit surface. The optical path conversion unit has a first reflecting surface and a second reflecting surface facing each other at a right angle,
2. A part of the light emitted from the light source is reflected between the first reflecting surface and the second reflecting surface, and converted into light traveling backward. Vehicle lamps. A projection lens for projecting light emitted from the light source forward;
The vehicular lamp according to claim 1, wherein the optical path conversion unit is disposed on a side of the projection lens.   The vehicular lamp according to claim 3, wherein the optical path conversion unit is formed integrally with either the projection lens or the light guide member.   The vehicular lamp according to claim 3, wherein the first reflecting surface is formed integrally with the projection lens, and the second reflecting surface is formed integrally with the light guide member.   6. A light guide member for a main beam, which is disposed between the light source and the projection lens and guides light emitted from the light source toward the projection lens. The vehicle lamp according to any one of the above.   The vehicular lamp according to any one of claims 3 to 6, wherein the light shielding portion includes a light shielding member that shields a periphery between the light source and the projection lens. The light source is disposed integrally with the light shielding member,
The vehicular lamp according to claim 7, wherein the light shielding member includes a heat radiating portion that radiates heat generated by the light source.   The vehicular lamp according to claim 7 or 8, wherein the light shielding member includes a reflector portion that reflects light emitted from the light source toward the projection lens.   2. A light guide member for a sub beam, which is disposed inside the light shielding part and guides a part of light emitted from the light source toward the optical path changing part. 10. The vehicular lamp according to any one of 9 above.   The said light-shielding part is provided in the inner surface of the said light guide member, The vehicle lamp as described in any one of Claims 1-10 characterized by the above-mentioned.   The vehicular lamp according to claim 6, wherein the light shielding portion is provided on an outer surface of the light guide member for the main beam.   The vehicular lamp according to claim 10, wherein the light shielding portion is provided on an outer surface of the light guide member for the sub beam.   The vehicular lamp according to any one of claims 1 to 13, further comprising a light guide unit configured to guide part of light incident on the optical path conversion unit toward the projection lens.   The said light source has a 1st light source part which radiate | emits light toward the said projection lens, and a 2nd light source part which radiate | emits light toward the said optical path change part, The 1-14 characterized by the above-mentioned. The vehicle lamp according to any one of the above.   The side lens which is arrange | positioned at the side of the said light guide member, and projects the light radiate | emitted from the said output surface toward a side is provided, The side lens of any one of Claims 1-15 characterized by the above-mentioned. Vehicle lamps.   The vehicular lamp according to claim 16, wherein the side lens includes a light reflecting portion that reflects light emitted from the emission surface toward the side.

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