JP2018195381A - Vehicular lighting fixture - Google Patents

Abstract

To provide a vehicular lighting fixture having a good appearance.SOLUTION: A vehicular lighting fixture comprises an outer cover, and a first function lamp for emitting light via a first translucent region and a second translucent region of the outer cover. The first function lamp comprises a first light emitting element, a first light guide body for guiding light from the first light emitting element to the first translucent region, a second light emitting element, and a second light guide body for guiding light from the second light emitting element to the second translucent region. A diffusion angle of light in an emitting surface of the first light guide body is different from a diffusion angle of light in an emitting surface of the second light guide body.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vehicular lamp.

  BACKGROUND ART A vehicular lamp including a light emitting element and a light guide as disclosed in Patent Document 1 and Patent Document 2 is known.

JP-A-2015-201278 JP, 2006-004667, A

  Various function lamps such as tail lamps, stop lamps, and turn signal lamps are known as vehicle lamps. A vehicular lamp is required to have a good appearance.

  An object of the present invention is to provide a vehicular lamp having a good appearance.

  The present invention includes an outer cover, and a first functional lamp that emits light through the first light transmitting region and the second light transmitting region of the outer cover, and the first functional lamp includes a first light emitting element. A first light guide that guides light from the first light emitting element to the first light transmitting region, a second light emitting element, and a second light guide that guides light from the second light emitting element to the second light transmitting region. There is provided a vehicular lamp that includes two light guides, and a light diffusion angle on an emission surface of the first light guide is different from a light diffusion angle on an emission surface of the second light guide. The

  According to the present invention, a vehicular lamp having a good appearance is provided.

FIG. 1 is a side view showing an example of a vehicle according to the present embodiment. FIG. 2 is a view of an example of the vehicle according to the present embodiment as viewed from the rear. FIG. 3 is a functional block diagram illustrating an example of a vehicle according to the present embodiment. FIG. 4 is a perspective view showing an example of the appearance of the vehicular lamp according to the present embodiment. FIG. 5 is a view of an example of a vehicular lamp according to the present embodiment as viewed from the rear. FIG. 6 is a view of an example of the vehicular lamp according to the present embodiment as viewed from the side. FIG. 7 is a cross-sectional view showing an example of a vehicular lamp according to the present embodiment. FIG. 8 is an enlarged view of a part of FIG. FIG. 9 is an enlarged view of a part of the first optical system according to the present embodiment. FIG. 10 is an enlarged view of a part of the emission surface of the first light guide according to the present embodiment. FIG. 11 is an enlarged view of a part of the second optical system according to the present embodiment. FIG. 12 is a cross-sectional view illustrating an example of an incident surface of the second light guide according to the present embodiment. FIG. 13 is an enlarged view of a part of the emission surface of the second light guide according to the present embodiment. FIG. 14 is an enlarged perspective view of a part of the first light guide and the second light guide according to the present embodiment.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings, but the present invention is not limited thereto. The components of the embodiments described below can be combined as appropriate. Some components may not be used.

[Vehicle and term definitions]
FIG. 1 is a side view showing an example of a vehicle 1 according to the present embodiment. FIG. 2 is a view of an example of the vehicle 1 according to the present embodiment as viewed from the rear. As shown in FIGS. 1 and 2, the vehicle 1 includes a vehicle body 2, a traveling device 3, and a vehicle lamp 100.

  The vehicle body 2 has a driver's cab in which the driver is boarded. The vehicle body 2 is supported by the traveling device 3. The traveling device 3 includes a wheel 5 on which the tire 4 is mounted, a steering device for changing the traveling direction of the vehicle 1, and a brake device for decelerating or stopping the traveling device 3. The traveling device 3 is operated by power generated by the engine.

  In the following description, it is assumed that the vehicle 1 is arranged on the ground parallel to the horizontal plane, and the terms front, rear, up, down, left, and right are used with reference to the driver who has boarded the cab. The positional relationship will be described. In the following description, a surface parallel to the ground contact surface of the tire 4 that contacts the ground is appropriately referred to as a predetermined surface. The predetermined plane is parallel to the horizontal plane.

  The vertical direction is a direction orthogonal to the predetermined plane. The left-right direction is a direction parallel to the rotation axis of the wheel 5 of the vehicle 1 in a straight traveling state. The front-rear direction is a direction orthogonal to the up-down direction and the left-right direction. The left-right direction is synonymous with the vehicle width direction. The vehicle width direction outer side means a part far from the center in the vehicle width direction or a direction away from the center, and the vehicle width direction inner side means a part near the center or the direction toward the center in the vehicle width direction. Further, the side means at least one of left and right, and the side means at least one of left and right.

  In the present embodiment, the vehicle outer side means a part far from the center or a direction away from the center in the radial direction with respect to the center of the vehicle 1 within a predetermined plane. The vehicle inner side refers to a portion close to the center or a direction toward the center in a radial direction with respect to the center of the vehicle 1 within a predetermined plane. The center of the vehicle 1 within the predetermined plane is located, for example, in the cab.

  The vehicle 1 includes a passenger door 6 provided at a side portion of the vehicle body 2 and a back door 7 provided at the rear portion of the vehicle body 2. Each of the entrance door 6 and the back door 7 is supported by the vehicle body 2 via a hinge mechanism so as to be movable.

  The vehicular lamp 100 includes a functional lamp. As a function lamp, a headlamp is provided at the front of the vehicle body 2 to illuminate the front of the vehicle 1, a fog lamp is provided at the front of the vehicle body 2 to illuminate the front of the vehicle 1, and is provided at the front of the vehicle body 2. Front turn signal lamp that lights to indicate the traveling direction of the vehicle 1 to the surroundings, tail lamp that is provided at the rear of the vehicle body 2 and lights in conjunction with the lighting of the headlamp, and that is linked to the operation of the brake device provided at the rear of the vehicle body 2 A stop lamp that is lit to turn on, a rear turn signal lamp that is provided at the rear of the vehicle body 2 and lights to indicate the traveling direction of the vehicle 1 to the surroundings, and a clearance lamp that lights to indicate the size of the vehicle 1 in the vehicle width direction Etc.

[Control device]
FIG. 3 is a functional block diagram illustrating an example of the vehicle 1 according to the present embodiment. The vehicle 1 includes a control device 8 and a plurality of function lamps connected to the control device 8. The control device 8 includes a microprocessor such as a CPU (Central Processing Unit), and a memory and storage such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The control device 8 includes a plurality of control units that control each of the plurality of function lamps. The plurality of function lamps and the plurality of control units correspond one-to-one. The control unit outputs a control signal to the corresponding function lamp to control the function lamp.

  In FIG. 3, a first function lamp 101, a second function lamp 102, a third function lamp 103,..., An Nth function lamp 10N are provided as function lamps, and a control signal is sent to the first function lamp 101 as a control unit. The first control unit 81 that outputs, the second control unit 82 that outputs a control signal to the second function lamp 102, the third control unit 83 that outputs the control signal to the third function lamp 103,..., The Nth function lamp 10N An example in which an Nth control unit 8N that outputs a control signal is provided is shown.

  In addition, the control device 8 includes a signal acquisition unit 80. The signal acquisition unit 80 acquires a command signal from the operation device 9 provided in the cab and a detection signal from the sensor 10 provided in the vehicle 1. The operation device 9 includes, for example, an operation switch for lighting a headlamp, an operation switch for lighting a turn signal lamp, and the like. The operating device 9 generates a command signal when operated by the driver. The sensor 10 includes, for example, an illuminance sensor. The control unit outputs a control signal to the function lamp based on the signal acquired by the signal acquisition unit 80.

  In the present embodiment, the vehicular lamp 100 is a combination lamp in which a first function lamp 101 and a second function lamp 102 are integrated. The first function lamp 101 is a turn signal lamp (rear turn signal lamp), and the second function lamp 102 is a tail stop lamp. That is, in the following description, it is assumed that the vehicular lamp 100 is a combination lamp (rear combination lamp) in which the turn signal lamp 101 and the tail stop lamp 102 are integrated.

[Outline of vehicle lamp]
Next, the vehicle lamp 100 according to the present embodiment will be described. In the present embodiment, the vehicular lamp 100 is provided at the rear portion of the vehicle body 2. A part of the vehicle lamp 100 is provided on the back door 7 which is a movable member, and a part of the vehicle lamp 100 is provided on the vehicle body panel of the vehicle body 2 which is a fixed member. The back door 7 and the vehicle body panel are adjacent to each other. When the back door 7 is closed, a sense of unity occurs between a part of the vehicle lamp 100 provided on the back door 7 and a part of the vehicle lamp 100 provided on the vehicle body panel.

  The vehicular lamp 100 is provided on each of the left part and the right part of the rear part of the vehicle body 2. The structure of the vehicle lamp 100 provided at the left part of the rear part of the vehicle body 2 and the structure of the vehicle lamp 100 provided at the right part of the rear part of the vehicle body 2 are substantially the same. Hereinafter, the vehicle lamp 100 provided in the left part of the rear part of the vehicle body 2 will be mainly described, and the description of the vehicle lamp 100 provided in the right part of the rear part of the vehicle body 2 will be simplified or omitted.

  FIG. 4 is a perspective view showing an example of the appearance of the vehicular lamp 100 according to the present embodiment. FIG. 5 is a view of an example of the vehicular lamp 100 according to the present embodiment as viewed from the rear. FIG. 6 is a view of an example of the vehicular lamp 100 according to the present embodiment as viewed from the left. FIG. 7 is a cross-sectional view showing an example of the vehicular lamp 100 according to the present embodiment. FIG. 8 is an enlarged view of a part of FIG. 5, FIG. 6, FIG. 7 and FIG. 8 show a part of the vehicular lamp 100 provided on the vehicle body panel.

  As shown in FIGS. 4, 5, 6, 7, and 8, the vehicular lamp 100 includes a lamp body 20, an outer cover 30, a turn signal lamp 101, and a tail stop lamp 102. In the present embodiment, the vehicular lamp 100 is a combination lamp including a turn signal lamp 101 and a tail stop lamp 102.

  The lamp body 20 is fixed to the vehicle body 2. The lamp body 20 is a support member that supports the turn signal lamp 101 and the tail stop lamp 102. The lamp body 20 is made of, for example, a synthetic resin. The outer cover 30 covers the opening of the lamp body 20. A lamp chamber is formed between the lamp body 20 and the outer cover 30. The turn signal lamp 101 and the tail stop lamp 102 are disposed in the lamp chamber.

[Outer cover]
The outer cover 30 transmits at least part of the light emitted from the turn signal lamp 101. The outer cover 30 transmits at least part of the light emitted from the tail stop lamp 102. The outer cover 30 is made of translucent synthetic resin, for example.

  The outer cover 30 includes a first light transmitting region 31 and a second light transmitting region 32 that transmit light emitted from the turn signal lamp 101, and a third light transmitting region 33 that transmits light emitted from the tail stop lamp 102. And have. In a predetermined plane parallel to the ground contact surface of the tire 4, the first light transmissive region 31, the second light transmissive region 32, and the third light transmissive region 33 are adjacent to each other. Within the predetermined plane, the third light transmissive region 33 is provided between the first light transmissive region 31 and the second light transmissive region 32.

  The turn signal lamp 101 emits light to the outside of the vehicle 1 through the first light transmitting region 31 and the second light transmitting region 32 of the outer cover 30. The tail stop lamp 102 emits light to the outside of the vehicle 1 through the third light transmission region 33 of the outer cover 30.

  In the present embodiment, the first light transmission region 31 faces the rear of the vehicle 1. The second light transmission region 32 faces the left side (side) of the vehicle 1. The third light transmissive region 33 faces the rear of the vehicle 1.

  In the present embodiment, the outer cover 30 includes a first outer cover 30 </ b> A having a first light transmissive region 31, a second outer cover 30 </ b> B having a second light transmissive region 32, and a third light having a third light transmissive region 33. And an outer cover 30C. The first outer cover 30A and the third outer cover 30C are connected. The second outer cover 30B and the third outer cover 30C are connected.

  The first outer cover 30A and the second outer cover 30B are made of a transparent synthetic resin. The third outer cover 30C is made of a translucent synthetic resin colored in red, for example.

[Turn signal lamp]
The turn signal lamp 101 includes a first optical system 40 that guides light to the first light transmitting region 31 and a second optical system 50 that guides light to the second light transmitting region 32.

  As shown in FIGS. 7 and 8, the first optical system 40 includes a first light emitting element 41 and a first light guide 42 that guides light from the first light emitting element 41 to the first light transmitting region 31. . The second optical system 50 includes a second light emitting element 51 and a second light guide 52 that guides light from the second light emitting element 51 to the second light transmitting region 32.

  Each of the first light emitting element 41 and the second light emitting element 51 is a semiconductor light emitting element such as a light emitting diode (LED). The first light emitting element 41 and the second light emitting element 51 are each a rectangular parallelepiped member.

  The first light emitting element 41 has a light emitting surface that emits light and a mounting surface that faces the opposite direction of the light emitting surface. The light emitting surface of the first light emitting element 41 faces the first light guide 42. The mounting surface of the first light emitting element 41 is connected to the flexible printed board 41P.

  The second light emitting element 51 has a light emitting surface that emits light and a mounting surface that faces in a direction opposite to the light emitting surface. The light emitting surface of the second light emitting element 51 faces the second light guide 52. The mounting surface of the second light emitting element 51 is connected to the flexible printed board 51P.

  A plurality of first light emitting elements 41 are provided in the left-right direction within a predetermined plane. In the present embodiment, four first light emitting elements 41 are provided in the left-right direction. Further, one first light emitting element 41 is provided in the vertical direction. That is, in the present embodiment, four first light emitting elements 41 are provided.

  Of the plurality of first light emitting elements 41 arranged in the left-right direction, the first light emitting element 41 arranged on the leftmost side (outside in the vehicle width direction) is arranged on the foremost side and farthest right (in the vehicle width direction inside). The first light emitting element 41 arranged at the rear is arranged at the rearmost position. That is, in the plurality of first light emitting elements 41 arranged in the vehicle width direction, the first light emitting elements 41 on the outer side in the vehicle width direction are arranged forward.

  A plurality of second light emitting elements 51 are provided in the front-rear direction within a predetermined plane. In the present embodiment, four second light emitting elements 51 are provided in the front-rear direction. One second light emitting element 51 is provided in the vertical direction. That is, in the present embodiment, four second light emitting elements 51 are provided.

  Of the plurality of second light emitting elements 51 arranged in the front-rear direction, the second light emitting element 51 arranged in the foremost position is arranged on the leftmost side (outside in the vehicle width direction) and the second arranged on the rearmost side. The light emitting element 51 is disposed on the rightmost side (in the vehicle width direction). That is, among the plurality of second light emitting elements 51 arranged in the front-rear direction, the front second light emitting element 51 is arranged on the outer side in the vehicle width direction.

  Each of the first light guide 42 and the second light guide 52 is manufactured by emitting and molding a translucent resin. In the present embodiment, the optical structure of the first light guide 42 and the optical structure of the second light guide 52 are different.

  Each of the first light guide 42 and the second light guide 52 is a plate-like member. The first light guide 42 includes an incident surface 43 on which light from the first light emitting element 41 is incident, an output surface 44 that emits light, and a light guide path 45 between the incident surface 43 and the output surface 44. . The second light guide 52 includes an incident surface 53 on which light from the second light emitting element 51 is incident, an output surface 54 that emits light, and a light guide path 55 between the incident surface 53 and the output surface 54. .

  As described above, one first light emitting element 41 is provided in the vertical direction. One first light guide 42 is also provided in the vertical direction.

  As described above, one second light emitting element 51 is provided in the vertical direction. One second light guide 52 is also provided in the vertical direction.

  The first light guide 42 has a plurality of incident surfaces 43. Four incident surfaces 43 of the first light guide 42 are provided corresponding to the first light emitting elements 41. The light emitting surface of the first light emitting element 41 faces the incident surface 43 of the first light guide 42. At least a part of the emission surface 44 of the first light guide 42 faces the first light transmitting region 31.

  The second light guide 52 has a plurality of incident surfaces 53. Four incident surfaces 53 of the second light guide 52 are provided corresponding to the second light emitting elements 51. The light emitting surface of the second light emitting element 51 faces the incident surface 53 of the second light guide 52. At least a part of the emission surface 54 of the second light guide 52 faces the second light transmission region 32.

  As shown in FIGS. 7 and 8, the first light guide 42 and the second light guide 52 are adjacent to each other within a predetermined plane. At the boundary 70 between the first light guide 42 and the second light guide 52, no step is formed between the emission surface 44 of the first light guide 42 and the emission surface 54 of the second light guide 52. Within the predetermined plane, the emission surface 44 of the first light guide 42 is gradually bent forward from the inner side in the vehicle width direction toward the outer side in the vehicle width direction. Within the predetermined plane, the emission surface 54 of the second light guide 52 is gradually bent outward in the vehicle width direction from the rear to the front. At the boundary 70 between the first light guide 42 and the second light guide 52, the emission surface 44 of the first light guide 42 and the emission surface 54 of the second light guide 52 are smoothly connected.

  FIG. 9 is an enlarged view of a part of the first optical system 40 according to the present embodiment. FIG. 10 is an enlarged view of a part of the emission surface 44 of the first light guide 42 according to the present embodiment. As shown in FIG. 9, the incident surface 43 of the first light guide 42 includes an incident surface 43A that faces the light emitting surface of the first light emitting element 41, and an incident surface 43B that is disposed around the incident surface 43A. Including. The incident surface 43A is a convex surface that swells toward the first light emitting element 41 side. In the present embodiment, the incident surface 43A is a convex lens surface (curved surface). A protrusion 46 is provided around the entrance surface 43A. The incident surface 43B is disposed on the protrusion 46.

  The light emitted from the first light emitting element 41 and incident on the incident surface 43A is refracted at the incident surface 43A, passes through the light guide path 45, and is emitted from the output surface 44.

  The light emitted from the first light emitting element 41 and incident on the incident surface 43 </ b> B is internally reflected by the reflecting surface 43 </ b> C of the protrusion 46, passes through the light guide path 45, and is emitted from the emitting surface 44.

  As shown in FIG. 10, the emission surface 44 of the first light guide 42 includes a plurality of minute convex surfaces 47 arranged in a matrix. In the present embodiment, three convex surfaces 47 are arranged in the vertical direction, and a large number are arranged in the horizontal direction.

  The convex surface 47 is a convex surface that swells rearward (on the outer cover 30 side). The convex surface 47 is a convex lens surface (curved surface). In the present embodiment, the curvature of the vertical cross-sectional shape of the convex surface 47 is equal to the curvature of the horizontal cross-sectional shape of the convex surface 47. In addition, the curvature of the vertical cross-sectional shape of the convex surface 47 may be larger or smaller than the curvature of the horizontal cross-sectional shape of the convex surface 47.

  As shown in FIG. 9, in this embodiment, the optical axis AX of the first optical system 40 extends rearward. In other words, the optical axis AX of the first optical system 40 extends in the front-rear direction. The optical axis AX of the first optical system 40 refers to a virtual light beam that is representative of the light beam that passes through the entire first optical system 40 in the first optical system 40. The optical axis AX of the first optical system 40 is the optical axis of the first light emitting element 41, the optical axis of the incident surface 43A of the first light guide 42, and the light of the convex surface 47 of the exit surface 44 of the first light guide 42. Includes at least one of the axes. The optical axis of the first light emitting element 41 refers to an axis that passes through the center of the light emitting surface of the first light emitting element 41 and is orthogonal to the light emitting surface. The optical axis of the incident surface 43A of the first light guide 42 is an axis that coincides with the rotational symmetry axis of the incident surface 43A. The optical axis of the convex surface 47 of the emission surface 44 of the first light guide 42 is an axis that coincides with the rotational symmetry axis of the convex surface 47.

  Within the predetermined plane, the plurality of convex surfaces 47 of the first light guide 42 are arranged at different positions in the optical axis direction (front-rear direction) of the convex surface 47 of the first light guide 42. That is, as shown in FIG. 10, the convex surfaces 47 are arranged in a step shape in the left-right direction. The plurality of convex surfaces 47 are provided so as to be displaced forward from the center in the vehicle width direction toward the outside. In addition, the position of the front-back direction of the some convex part 47 arrange | positioned at an up-down direction is substantially equal.

  FIG. 11 is an enlarged view of a part of the second optical system 50 according to the present embodiment. FIG. 12 is a cross-sectional view illustrating an example of the incident surface 53 of the second light guide 52 according to the present embodiment. FIG. 13 is an enlarged view of a part of the emission surface 54 of the second light guide 52 according to the present embodiment.

  As shown in FIGS. 11 and 12, the incident surfaces 53 of the second light guide 52 are disposed on the incident surfaces 53A facing the light emitting surface of the second light emitting element 51 and on both sides in the vertical direction of the incident surfaces 53A. And an incident surface 53B. The incident surface 53A is a convex surface that swells toward the second light emitting element 51 side. In the present embodiment, the incident surface 53A is a convex lens surface (curved surface). Protrusions 56 are provided on both upper and lower sides of the incident surface 53A. The incident surface 53B is disposed on the protrusion 56.

  The light emitted from the second light emitting element 51 and incident on the incident surface 53A is refracted at the incident surface 53A, passes through the light guide path 55, and is emitted from the output surface 54.

  The light emitted from the second light emitting element 51 and incident on the incident surface 53 </ b> B is internally reflected by the reflecting surface 53 </ b> C of the protrusion 56, passes through the light guide path 55, and is emitted from the emitting surface 54.

  As shown in FIG. 13, the emission surface 54 of the second light guide 52 includes a plurality of minute convex surfaces 57 arranged in a matrix. In the present embodiment, three convex surfaces 57 are arranged in the vertical direction, and a large number are arranged in the front-rear direction.

  The convex surface 57 is a convex surface that swells to the left (outer cover 30 side). The convex surface 57 is a convex lens surface (curved surface). In the present embodiment, the curvature of the vertical cross-sectional shape of the convex surface 57 is equal to the curvature of the horizontal cross-sectional shape of the convex surface 57. In addition, the curvature of the vertical cross-sectional shape of the convex surface 57 may be larger or smaller than the curvature of the horizontal cross-sectional shape of the convex surface 57.

  As shown in FIGS. 9 and 11, in this embodiment, the direction of the optical axis AX of the first optical system 40 and the direction of the optical axis BX of the second optical system 50 are different.

  In the present embodiment, the optical axis BX of the second optical system 50 extends laterally. In other words, the optical axis BX of the second optical system 50 extends in the left-right direction. The optical axis BX of the second optical system 50 refers to a virtual light beam that is representative of the light beam passing through the entire second optical system 50 in the second optical system 50. The optical axis BX of the second optical system 50 is the optical axis of the second light emitting element 51, the optical axis of the incident surface 53A of the second light guide 52, and the light of the convex surface 57 of the exit surface 54 of the second light guide 52. Includes at least one of the axes. The optical axis of the second light emitting element 51 refers to an axis that passes through the center of the light emitting surface of the second light emitting element 51 and is orthogonal to the light emitting surface. The optical axis of the incident surface 53A of the second light guide 52 refers to an axis that coincides with the rotational symmetry axis of the incident surface 53A. The optical axis of the convex surface 57 of the emission surface 54 of the second light guide 52 refers to an axis that coincides with the rotational symmetry axis of the convex surface 57.

  Within the predetermined plane, the plurality of convex surfaces 57 of the second light guide 52 are arranged at substantially the same position in the optical axis direction (left-right direction) of the convex surface 57 of the second light guide 52. That is, as shown in FIG. 13, the convex surface 57 is disposed flat in the front-rear direction. Moreover, the position of the left-right direction of the some convex surface 57 arrange | positioned at an up-down direction is also substantially equal.

  Further, as shown in FIGS. 9 and 11, in this embodiment, the light diffusion angle θ <b> 1 on the emission surface 44 of the first light guide 42 and the light diffusion on the emission surface 54 of the second light guide 52. The angle θ2 is different.

  In the present embodiment, the light diffusion angle θ1 at the exit surface 44 of the first light guide 42 that emits light backward is the light diffusion angle θ1 at the exit surface 54 of the second light guide 52 that emits light laterally. It is smaller than the diffusion angle θ2.

  In the present embodiment, the curvature of the convex surface 47 of the emission surface 44 of the first light guide 42 is smaller than the curvature of the convex surface 57 of the emission surface 54 of the second light guide 52. Thereby, the diffusion angle θ1 can be made smaller than the diffusion angle θ2.

[Tail stop lamp]
As shown in FIGS. 7 and 8, the tail stop lamp 102 includes a third optical system 60 that guides light to the third light transmitting region 33. The third optical system 60 includes a third light emitting element 61 and a third light guide 62 that guides light from the third light emitting element 61 to the third light transmitting region 33. The third light emitting element 61 is a semiconductor light emitting element such as a light emitting diode (LED). The third light emitting element 61 is a rectangular parallelepiped member.

  The third light emitting element 61 has a light emitting surface that emits light and a mounting surface that faces the opposite direction of the light emitting surface. The light emitting surface of the third light emitting element 61 faces the third light guide 62. The mounting surface of the third light emitting element 61 is connected to the flexible printed board 61P. One third light emitting element 61 is provided in a predetermined plane. A plurality of second light emitting elements 51 may be provided within a predetermined plane.

  The third light guide 62 is manufactured by emitting and molding a translucent resin. In the present embodiment, the optical structure of the third light guide 62 is different from the optical structure of the first light guide 42 and the optical structure of the second light guide 52.

  The third light guide 62 includes an incident surface 63 on which light from the third light emitting element 61 is incident, an output surface 64 that emits light, and a light guide path 65 between the incident surface 63 and the output surface 64. . The light emitting surface of the third light emitting element 61 faces the incident surface 63 of the third light guide 62. At least a part of the emission surface 64 of the third light guide 62 is opposed to the third light transmission region 33.

  Further, the tail stop lamp 102 includes the light shielding member 21 disposed between the third light guide 62 and the first light guide 42 and the second light guide 52. The light shielding member 21 suppresses the light that has passed through the first light guide 42 and the light that has passed through the second light guide 52 from entering the third light guide 62. The first light guide 42 and the second light guide 52 of the turn signal lamp 101 and the third light guide 62 of the tail stop lamp 102 are optically separated by the light shielding member 21.

  Further, the tail stop lamp 102 includes a light transmissive member 22 disposed between the third light guide 62 and the outer cover 30. The light emitted from the emission surface 64 of the third light guide 62 passes through the light transmissive member 22 and then passes through the third light transmissive region 33 of the outer cover 30.

[Positional relationship between turn signal lamp and tail stop lamp]
As shown in FIGS. 7 and 8, in the present embodiment, the tail stop lamp 102 is disposed outside the vehicle with respect to the turn signal lamp 101 within a predetermined plane. In the present embodiment, the turn signal lamp 101 and the tail stop lamp 102 intersect three-dimensionally so that the tail stop lamp 102 is disposed outside the turn signal lamp 101.

  Within the predetermined plane, the third light guide 62 is disposed between the outer cover 30, the first light guide 42 and the second light guide 52. In other words, the third light guide 62 is disposed outside the vehicle with respect to the first light guide 42 and the second light guide 52 within the predetermined plane.

  As shown in FIGS. 7 and 8, in the present embodiment, the outer cover of the lamp body 20, the first light guide 42, the second light guide 52, the third light guide 62, and the outer cover 30. 30 is disposed on the outermost side of the vehicle, the third light guide 62 is disposed on the outer side of the vehicle after the outer cover 30, and the first light guide 42 and the second light guide 52 are disposed on the outer side of the third light guide 62. The lamp body 20 is disposed on the innermost side of the vehicle.

[Cover member]
FIG. 14 is an enlarged perspective view of a part of the first light guide 42 and the second light guide 52 according to the present embodiment. As shown in FIG. 14, the first light guide 42 has a flange portion 48 that protrudes in the vertical direction from the light guide path 45. The second light guide 52 has a flange portion 58 that protrudes in the vertical direction from the light guide path 55. At the boundary 70 between the first light guide 42 and the second light guide 52, no step is formed between the emission surface 44 of the first light guide 42 and the emission surface 54 of the second light guide 52. In addition, at the boundary 70 between the first light guide 42 and the second light guide 52, no step is formed between the flange portion 48 of the first light guide 42 and the flange portion 58 of the second light guide 52. .

  As shown in FIGS. 7 and 8, a boundary 70 between the first light guide 42 and the second light guide 52 is formed between the third outer cover 30 </ b> C including the third light transmission region 33 and the third light guide 62. It is arranged inside the vehicle. That is, the boundary 70 is disposed at a position that is difficult to visually recognize from the outside of the vehicle 1.

  In addition, the boundary 70 between the first light guide 42 and the second light guide 52 is greater than the boundary 71 between the first light transmission region 31 and the third light transmission region 33 and the third light transmission region 32 and the third light transmission region 32. It is provided at a position close to the boundary 72 with the light transmitting region 33. The boundary 71 includes a boundary between the first outer cover 30A and the third outer cover 30C. The boundary 72 includes a boundary between the second outer cover 30B and the third outer cover 30C. That is, in the present embodiment, the boundary 70 between the first light guide 42 and the second light guide 52 is the third outer cover on the vehicle inner side of the third outer cover 30C (the back side of the third outer cover 30C). It is located in front of the center of 30C.

  As shown in FIGS. 4, 6, 7, and 8, in the present embodiment, the vehicular lamp 100 includes a second light transmissive region 32, a first light guide 42, and a second light guide 52. The cover member 23 is provided between the boundary 70. The cover member 23 includes a plate member. The cover member 23 improves the aesthetics of the vehicular lamp 100. Further, the cover member 23 is arranged so as to hide the boundary 70, and the boundary 70 is prevented from being visually recognized from the outside of the vehicle 1.

[Method of operation]
In the present embodiment, the turn signal lamp 101 is a sequential turn signal lamp. The sequential turn signal lamp refers to a chain-type turn signal lamp that sequentially turns on a plurality of light emitting elements in a predetermined order. In the present embodiment, the first control unit 81 of the control device 8 outputs a control signal to the turn signal lamp 101 to cause the plurality of first light emitting elements 41 and the plurality of second light emitting elements 51 to emit light sequentially.

  In the present embodiment, the first control unit 81 outputs a control signal so that the plurality of first light emitting elements 41 and the plurality of second light emitting elements 51 emit light sequentially from the inner side to the outer side in the vehicle width direction. That is, in this embodiment, after the plurality of first light emitting elements 41 emit light sequentially, the plurality of second light emitting elements 51 emit light sequentially.

[effect]
As described above, according to the present embodiment, the turn signal lamp 101 of the vehicular lamp 100 includes the first light guide 42 and the second light guide 52 having different optical structures. In the present embodiment, the light diffusion angle θ1 at the exit surface 44 of the first light guide 42 and the light diffusion angle θ2 at the exit surface 54 of the second light guide 52 are different. Thereby, it is possible to make the aesthetic feeling caused to the person who sees the first light guide 42 different from the aesthetic feeling caused to the person who sees the second light guide 52. Therefore, the appearance of the vehicular lamp 100 is improved.

  Moreover, in this embodiment, the 1st translucent area | region 31 faces back, and the 2nd translucent area | region 32 faces side. Accordingly, it is possible to make the aesthetic feeling that causes the person who viewed the turn signal lamp 101 from the rear to be different from the aesthetic feeling that causes the person who viewed the turn signal lamp 101 from the side. In the present embodiment, the light diffusion angle θ1 at the exit surface 44 of the first light guide 42 facing rearward is greater than the light diffusion angle θ2 at the exit surface 54 of the second light guide 52 facing sideways. Is also small. Therefore, sharp light is emitted behind the vehicular lamp 100, and light light is emitted laterally of the vehicular lamp 100. Therefore, for example, a driver of another vehicle traveling behind the vehicle 1 can recognize the sharp light emitted from the emission surface 44 of the first light guide 42 with high sensitivity. Further, since light is emitted to the side of the vehicle 1, the aesthetics of the turn signal lamp 101 are improved. Therefore, the appearance of the vehicular lamp 100 is improved.

  In the present embodiment, the emission surface 44 of the first light guide 42 includes a plurality of minute convex surfaces 47 arranged in a matrix, and the emission surface 54 of the second light guide 52 is in a matrix. It includes a plurality of minute convex surfaces 57 to be arranged. Therefore, by adjusting the curvature of the convex surface 47 and the curvature of the convex surface 57, an arbitrary diffusion angle θ1 and diffusion angle θ2 can be obtained.

  Moreover, in this embodiment, the several convex surface 47 of the 1st light guide 42 is arrange | positioned in a different position in the direction parallel to the optical axis AX, and the some convex surface 57 of the 2nd light guide 52 is optical axis. They are arranged at substantially the same position in the direction parallel to BX. Thereby, the impression given to the person who sees turn signal lamp 101 from the back and the impression given to the person who looked at turn signal lamp 101 from the side can be made different. Therefore, the appearance of the vehicular lamp 100 is further improved.

  In the present embodiment, the boundary 70 between the first light guide 42 and the second light guide 52 is disposed on the vehicle inner side of the third light transmission region 33 of the outer cover 30. Thereby, it is suppressed that the boundary 70 is visually recognized directly from the outside. Therefore, the appearance of the vehicular lamp 100 is improved.

  In the present embodiment, the boundary 70 between the first light guide 42 and the second light guide 52 is a second light transmission than the boundary 71 between the first light transmission region 31 and the third light transmission region 33. It is provided at a position close to the boundary 72 between the region 32 and the third light transmitting region 33. Further, the cover member 23 is disposed between the second light transmitting region 32 and the boundary 70 between the first light guide 42 and the second light guide 52. By arranging the boundary 70 closer to the second light transmitting region 32 than to the first light transmitting region 31, it is possible to suppress the boundary 70 from being visually recognized from the rear. In addition, the cover member 23 is disposed at the rear portion of the second light-transmissive region 32, so that the boundary 70 is suppressed from being visually recognized from the side. Therefore, the appearance of the vehicular lamp 100 is further improved. Further, the appearance of the vehicular lamp 100 is further improved by the design of the cover member 23.

  In the present embodiment, the turn signal lamp 101 includes a first light guide 42 and a second light guide 52 that are adjacent to each other. The tail stop lamp 102 includes a third light guide 62 disposed on the vehicle outer side than the first light guide 42 and the second light guide 52. Since the first light guide 42 and the second light guide 52 through which the light passes and the third light guide 62 through which the light passes three-dimensionally intersect, the appearance of the vehicular lamp 100 is further improved.

  In the embodiment described above, the light emitting elements (41, 51, 61) are light emitting diodes (LEDs). The light emitting elements (41, 51, 61) may be organic electroluminescent light emitters.

  In the above-described embodiment, the first function lamp 101 is a turn signal lamp, and the second function lamp 102 is a tail stop lamp. The first function lamp 101 may be a tail stop lamp, and the second function lamp 102 may be a turn signal lamp. The first function lamp 101 may be any one of a tail lamp, a clearance lamp, a stop lamp, and a back lamp, and the second function lamp 102 may be another one.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Vehicle body, 3 ... Traveling apparatus, 4 ... Tire, 5 ... Wheel, 6 ... Door for getting on / off, 7 ... Back door, 8 ... Control device, 9 ... Operating device, 10 ... Sensor, 20 ... Lamp body , 21: light shielding member, 22: translucent member, 23: cover member, 30: outer cover, 30A: first outer cover, 30B: second outer cover, 30C: third outer cover, 31: first translucent region , 32 ... 2nd light transmission area | region, 33 ... 3rd light transmission area | region, 40 ... 1st optical system, 41 ... 1st light emitting element, 41P ... flexible printed circuit board, 42 ... 1st light guide, 43 ... entrance plane, 43A ... incident surface, 43B ... incident surface, 43C ... reflecting surface, 44 ... emission surface, 45 ... light guide, 46 ... projection, 47 ... convex surface, 48 ... flange, 50 ... second optical system, 51 ... second. Light emitting element, 51P ... flexible printed circuit board, DESCRIPTION OF SYMBOLS 2 ... 2nd light guide, 53 ... Incident surface, 53A ... Incident surface, 53B ... Incident surface, 53C ... Reflective surface, 54 ... Output surface, 55 ... Light guide path, 56 ... Projection part, 57 ... Convex surface, 58 ... Flange , 60 ... third optical system, 61 ... third light emitting element, 61P ... flexible printed circuit board, 62 ... third light guide, 63 ... incident surface, 64 ... outgoing surface, 65 ... light guide, 70 ... boundary, 71 ... Boundary, 72 ... Boundary, 80 ... Signal acquisition unit, 81 ... First control unit, 82 ... Second control unit, 83 ... Third control unit, 8N ... Nth control unit, 100 ... Vehicle lamp, 101 ... No. 1 function lamp (turn signal lamp), 102 ... 2nd function lamp (tail stop lamp), 103 ... 3rd function lamp, 10N ... Nth function lamp, AX ... optical axis, BX ... optical axis.

Claims (7)

An outer cover,
A first functional lamp that emits light through the first light-transmitting region and the second light-transmitting region of the outer cover,
The first functional lamp includes a first light emitting element, a first light guide that guides light from the first light emitting element to the first light transmitting region, a second light emitting element, and the second light emitting element. A second light guide for guiding light to the second light transmissive region,
The light diffusion angle at the exit surface of the first light guide is different from the light diffusion angle at the exit surface of the second light guide.
Vehicle lamp. The first light guide and the second light guide are adjacent to each other within a predetermined plane substantially parallel to a ground contact surface of a tire mounted on the vehicle,
The first light-transmissive region faces rearward,
The second light-transmissive region faces sideways,
The diffusion angle of light on the exit surface of the first light guide is smaller than the diffusion angle of light on the exit surface of the second light guide,
The vehicular lamp according to claim 1. The exit surface of the first light guide includes a plurality of convex surfaces arranged in a matrix,
The exit surface of the second light guide includes a plurality of convex surfaces arranged in a matrix.
The vehicular lamp according to claim 2. The plurality of convex surfaces of the first light guide are arranged at different positions in the optical axis direction of the convex surface of the first light guide,
The plurality of convex surfaces of the second light guide are disposed at substantially the same position in the optical axis direction of the convex surface of the second light guide.
The vehicular lamp according to claim 3. A second functional lamp that emits light through a third light-transmitting region of the outer cover between the first light-transmitting region and the second light-transmitting region;
The boundary between the first light guide and the second light guide is disposed on the vehicle inner side of the third light transmission region.
The vehicular lamp according to any one of claims 2 to 4. The boundary between the first light guide and the second light guide is more than the second light transmission region and the third light transmission region than the boundary between the first light transmission region and the third light transmission region. Is located near the boundary of
A cover member disposed between the second light transmissive region and a boundary between the first light guide and the second light guide;
The vehicular lamp according to claim 5. The second functional lamp includes a third light emitting element and a third light guide that guides light from the third light emitting element to the third light transmitting region,
In the predetermined surface, the third light guide is disposed between the outer cover, the first light guide, and the second light guide.
The vehicular lamp according to claim 5 or 6.

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