JP6897298B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

Vehicle lamps including a light emitting element and a light guide as disclosed in Patent Document 1 and Patent Document 2 are known.

Japanese Unexamined Patent Publication No. 2015-201278 Japanese Unexamined Patent Publication No. 2016-004667

Various functional lamps such as tail lamps, stop lamps, and turn signal lamps are known as vehicle lamps. Vehicle lighting fixtures are required to look good.

An object of the present invention is to provide a lighting fixture for a vehicle having a good appearance.

The present invention includes an outer cover and a first function lamp that emits light through a first translucent region and a second transmissive region of the outer cover, and guides light to the first transmissive region. The direction of the optical axis of the first optical system of the first function lamp and the direction of the optical axis of the second optical system of the first function lamp that guides the light to the second translucent region are different. Provided.

According to the present invention, a good-looking vehicle lamp is provided.

FIG. 1 is a side view showing an example of a vehicle according to the present embodiment. FIG. 2 is a rear view of an example of the vehicle according to the present embodiment. FIG. 3 is a functional block diagram showing an example of a vehicle according to the present embodiment. FIG. 4 is a perspective view showing an example of the appearance of the vehicle lamp according to the present embodiment. FIG. 5 is a rear view of an example of a vehicle lamp according to the present embodiment. FIG. 6 is a side view of an example of a vehicle lamp according to the present embodiment. FIG. 7 is a cross-sectional view showing an example of a vehicle lamp according to the present embodiment. FIG. 8 is an enlarged view of a part of FIG. 7. 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 exit 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 showing an example of an incident surface of the second light guide body according to the present embodiment. FIG. 13 is an enlarged view of a part of the exit 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 body and the second light guide body 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. In addition, some components may not be used.

[Definition of vehicles and terms]
FIG. 1 is a side view showing an example of the vehicle 1 according to the present embodiment. FIG. 2 is a rear view of an example of the vehicle 1 according to the present embodiment. 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 on 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 braking device for decelerating or stopping the traveling device 3. The traveling device 3 is operated by the power generated by the engine.

In the following description, it is assumed that the vehicle 1 is placed on the ground parallel to the horizontal plane, and each part uses the terms front, rear, top, bottom, left, and right with reference to the driver in the driver's cab. The positional relationship of the above will be described. Further, in the following description, a surface parallel to the ground contact surface of the tire 4 in contact with 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 a predetermined surface. The left-right direction is a direction parallel to the rotation axis of the wheel 5 of the vehicle 1 in the straight-ahead state. The front-back direction is a direction orthogonal to each of the up-down direction and the left-right direction. The left-right direction is synonymous with the vehicle width direction. The outside in the vehicle width direction means a portion far from the center or a direction away from the center in the vehicle width direction, and the inside in the vehicle width direction means a portion near the center or a direction toward the center in the vehicle width direction. Further, the side means at least one of the left side and the right side, and the side part means at least one of the left part and the right part.

In the present embodiment, the outside of the vehicle means a portion far from the center or a direction away from the center in the radial direction with respect to the center of the vehicle 1 in the predetermined plane. The inside of the vehicle means a portion close to the center or a direction toward the center in the radial direction with respect to the center of the vehicle 1 in the predetermined plane. The center of the vehicle 1 in the predetermined plane is located, for example, in the driver's cab.

The vehicle 1 includes a boarding / alighting door 6 provided on the side of the vehicle body 2 and a back door 7 provided on the rear portion of the vehicle body 2. The boarding / alighting door 6 and the back door 7 are each movably supported by the vehicle body 2 via a hinge mechanism.

The vehicle lamp 100 includes a functional lamp. As functional lamps, headlamps provided at the front of the vehicle body 2 to illuminate the front of the vehicle 1, fog lamps provided at the front of the vehicle body 2 to supplementally illuminate the front of the vehicle 1, and functional lamps provided at the front of the vehicle body 2. A front turn signal lamp that lights up to indicate the direction of travel of the vehicle 1 to the surroundings, a tail lamp that is installed at the rear of the vehicle body 2 and lights up in conjunction with the lighting of the headlamp, and a tail lamp that is installed at the rear of the vehicle body 2 and is linked with the operation of the braking device. A stop lamp that lights up, a rear turn signal lamp that is provided at the rear of the vehicle body 2 and lights up to indicate the traveling direction of the vehicle 1 to the surroundings, and a clearance lamp that lights up to indicate the size of the vehicle 1 in the vehicle width direction. And so on.

[Control device]
FIG. 3 is a functional block diagram showing an example of the vehicle 1 according to the present embodiment. The vehicle 1 has 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 has a plurality of control units that control each of the plurality of function lamps. There is a one-to-one correspondence between the plurality of function lamps and the plurality of control units. 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, ..., And 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. To the first control unit 81 to output, the second control unit 82 to output the control signal to the second function lamp 102, the third control unit 83 to output the control signal to the third function lamp 103, ..., The Nth function lamp 10N An example in which the Nth control unit 8N for outputting the control signal is provided is shown.

Further, the control device 8 has a signal acquisition unit 80. The signal acquisition unit 80 acquires a command signal from the operation device 9 provided in the driver's 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 vehicle lamp 100 is a combination lamp in which the first function lamp 101 and the second function lamp 102 are integrated. Further, it is assumed that 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 vehicle lamp 100 is a combination lamp (rear combination lamp) in which the turn signal lamp 101 and the tail stop lamp 102 are integrated.

[Overview of vehicle lighting equipment]
Next, the vehicle lamp 100 according to the present embodiment will be described. In the present embodiment, the vehicle lamp 100 is provided at the rear of the vehicle body 2. A part of the vehicle lighting equipment 100 is provided on the back door 7 which is a movable member, and a part of the vehicle lighting equipment 100 is provided on the vehicle body panel of the vehicle body 2 which is a fixing 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 is generated between a part of the vehicle lighting fixture 100 provided on the back door 7 and a part of the vehicle lighting fixture 100 provided on the vehicle body panel.

The vehicle lighting fixture 100 is provided on each of the left portion and the right portion of the rear portion of the vehicle body 2. The structure of the vehicle lighting fixture 100 provided on the left side of the rear portion of the vehicle body 2 and the structure of the vehicle lighting fixture 100 provided on the right portion of the rear portion of the vehicle body 2 are substantially the same. Hereinafter, the vehicle lighting fixture 100 provided on the left side of the rear portion of the vehicle body 2 will be mainly described, and the description of the vehicle lighting fixture 100 provided on the right portion of the rear portion of the vehicle body 2 will be simplified or omitted.

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

As shown in FIGS. 4, 5, 6, 7, and 8, the vehicle 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 vehicle 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 arranged in the light room.

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

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

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

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

In the present embodiment, the outer cover 30 has a first outer cover 30A having a first translucent region 31, a second outer cover 30B having a second translucent region 32, and a third outer cover 30 having a third translucent region 33. Includes 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, for example, a red-colored translucent synthetic resin.

[Turn signal lamp]
The turn signal lamp 101 has 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 body 42 that guides the 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 the light from the second light emitting element 51 to the second light transmitting region 32.

The first light emitting element 41 and the second light emitting element 51 are semiconductor light emitting elements such as a light emitting diode (LED), respectively. The first light emitting element 41 and the second light emitting element 51 are rectangular parallelepiped members, respectively.

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 body 42. The mounting surface of the first light emitting element 41 is connected to the flexible printed circuit board 41P.

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

A plurality of first light emitting elements 41 are provided in a predetermined plane in the left-right direction. 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 frontmost side and is arranged on the far right side (inside in the vehicle width direction). The first light emitting element 41 arranged in) 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 outside the vehicle width direction are arranged in front of the plurality of first light emitting elements 41.

A plurality of second light emitting elements 51 are provided in the front-rear direction in a predetermined plane. In the present embodiment, four second light emitting elements 51 are provided in the front-rear direction. Further, 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 at the frontmost is arranged on the leftmost side (outside in the vehicle width direction), and the second light emitting element 51 is arranged at the rearmost position. The light emitting element 51 is arranged on the far right side (inside in the vehicle width direction). That is, in the plurality of second light emitting elements 51 arranged in the front-rear direction, the second light emitting element 51 in front is arranged outside in the vehicle width direction.

The first light guide body 42 and the second light guide body 52 are each manufactured by injection molding a translucent resin. In the present embodiment, the optical structure of the first light guide body 42 and the optical structure of the second light guide body 52 are different.

The first light guide body 42 and the second light guide body 52 are plate-shaped members, respectively. The first light guide body 42 has an incident surface 43 on which light from the first light emitting element 41 is incident, an exit surface 44 that emits light, and a light guide path 45 between the incident surface 43 and the exit surface 44. .. The second light guide 52 has an incident surface 53 on which light from the second light emitting element 51 is incident, an exit surface 54 that emits light, and a light guide path 55 between the incident surface 53 and the exit surface 54. ..

As described above, one first light emitting element 41 is provided in the vertical direction. One first light guide body 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 body 42 has a plurality of incident surfaces 43. Four incident surfaces 43 of the first light guide body 42 are provided corresponding to the first light emitting element 41. The light emitting surface of the first light emitting element 41 faces the incident surface 43 of the first light guide body 42. At least a part of the exit 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 element 51. The light emitting surface of the second light emitting element 51 faces the incident surface 53 of the second light guide body 52. At least a part of the exit surface 54 of the second light guide 52 faces the second light transmitting region 32.

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

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 exit surface 44 of the first light guide body 42 according to the present embodiment. As shown in FIG. 9, the incident surface 43 of the first light guide body 42 includes an incident surface 43A facing the light emitting surface of the first light emitting element 41 and an incident surface 43B arranged around the incident surface 43A. Including. The incident surface 43A is a convex surface that bulges toward the first light emitting element 41. In the present embodiment, the incident surface 43A is a convex lens surface (curved surface). A protrusion 46 is provided around the incident surface 43A. The incident surface 43B is arranged on the protrusion 46.

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

The light emitted from the first light emitting element 41 and incident on the incident surface 43B is internally reflected by the reflecting surface 43C 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 exit surface 44 of the first light guide body 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 many are arranged in the horizontal direction.

The convex surface 47 is a convex surface that bulges 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. 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 the present 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 representing a light flux passing 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 light of the optical axis of the first light emitting element 41, the optical axis of the incident surface 43A of the first light guide body 42, and the light of the convex surface 47 of the exit surface 44 of the first light guide body 42. Includes at least one of the axes. The optical axis of the first light emitting element 41 means 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 refers to an axis that coincides with the rotationally symmetric axis of the incident surface 43A. The optical axis of the convex surface 47 of the exit surface 44 of the first light guide body 42 means an axis that coincides with the axis of rotational symmetry of the convex surface 47.

Within the predetermined plane, the plurality of convex surfaces 47 of the first light guide body 42 are arranged at different positions in the optical axis direction (front-back direction) of the convex surfaces 47 of the first light guide body 42. That is, as shown in FIG. 10, the convex surfaces 47 are arranged in steps 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. The positions of the plurality of convex portions 47 arranged in the vertical direction in the front-rear direction are substantially the same.

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 showing an example of the incident surface 53 of the second light guide body 52 according to the present embodiment. FIG. 13 is an enlarged view of a part of the exit surface 54 of the second light guide body 52 according to the present embodiment.

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

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

The light emitted from the second light emitting element 51 and incident on the incident surface 53B is internally reflected by the reflecting surface 53C 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 exit 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 many are arranged in the front-rear direction.

The convex surface 57 is a convex surface that bulges 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. 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 the present embodiment, the orientation of the optical axis AX of the first optical system 40 and the orientation 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 representing a light flux passing through the entire second optical system 50 in the second optical system 50. The optical axis BX of the second optical system 50 includes 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 means 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 rotationally symmetric axis of the incident surface 53A. The optical axis of the convex surface 57 of the exit surface 54 of the second light guide 52 means an axis that coincides with the axis of rotational symmetry of the convex surface 57.

Within the predetermined plane, the plurality of convex surfaces 57 of the second light guide body 52 are arranged at substantially the same position in the optical axis direction (left-right direction) of the convex surfaces 57 of the second light guide body 52. That is, as shown in FIG. 13, the convex surface 57 is arranged flat in the front-rear direction. Further, the positions of the plurality of convex surfaces 57 arranged in the vertical direction in the horizontal direction are also substantially the same.

Further, as shown in FIGS. 9 and 11, in the present embodiment, the light diffusion angle θ1 on the exit surface 44 of the first light guide 42 and the light diffusion on the exit surface 54 of the second light guide 52 The angle θ2 is different.

In the present embodiment, the light diffusion angle θ1 on the exit surface 44 of the first light guide 42 that emits light rearward is the light on 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 exit surface 44 of the first light guide 42 is smaller than the curvature of the convex surface 57 of the exit surface 54 of the second light guide 52. As a result, 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 translucent region 33. The third optical system 60 includes a third light emitting element 61 and a third light guide body 62 that guides the 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 in the opposite direction to the light emitting surface. The light emitting surface of the third light emitting element 61 faces the third light guide body 62. The mounting surface of the third light emitting element 61 is connected to the flexible printed circuit 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 in a predetermined plane.

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

The third light guide body 62 has an incident surface 63 on which light from the third light emitting element 61 is incident, an exit surface 64 that emits light, and a light guide path 65 between the incident surface 63 and the exit surface 64. .. The light emitting surface of the third light emitting element 61 faces the incident surface 63 of the third light guide body 62. At least a part of the exit surface 64 of the third light guide body 62 faces the third light transmitting region 33.

Further, the tail stop lamp 102 has a light-shielding member 21 arranged between the third light guide body 62, the first light guide body 42, and the second light guide body 52. The light-shielding member 21 suppresses the light passing through the first light guide body 42 and the light passing through the second light guide body 52 from entering the third light guide body 62. The light-shielding member 21 optically separates the first light guide body 42 and the second light guide body 52 of the turn signal lamp 101 and the third light guide body 62 of the tail stop lamp 102.

Further, the tail stop lamp 102 has a translucent member 22 arranged between the third light guide body 62 and the outer cover 30. The light emitted from the exit surface 64 of the third light guide body 62 passes through the light transmitting member 22 and then passes through the third light transmitting 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 arranged outside the vehicle with respect to the turn signal lamp 101 in the 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 arranged outside the vehicle with respect to the turn signal lamp 101.

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

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

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

As shown in FIGS. 7 and 8, the boundary 70 between the first light guide body 42 and the second light guide body 52 is the boundary 70 of the third outer cover 30C and the third light guide body 62 including the third light transmission region 33. It is placed inside the vehicle. That is, the boundary 70 is arranged at a position where it is difficult to see from the outside of the vehicle 1.

Further, the boundary 70 between the first light guide body 42 and the second light guide body 52 is the second light transmission region 32 and the third light transmission region 32 and the third light transmission region 32 rather 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 with the translucent 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 body 42 and the second light guide body 52 is the third outer cover on the inside of the vehicle of the third outer cover 30C (the back surface 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 vehicle lamp 100 includes the second light transmitting region 32, the first light guide body 42, and the second light guide body 52. A cover member 23 is provided between the two and the boundary 70. The cover member 23 includes a plate-shaped member. The cover member 23 improves the aesthetic appearance of the vehicle lamp 100. Further, the cover member 23 is arranged so as to hide the boundary 70, and prevents the boundary 70 from being visually recognized from the outside of the vehicle 1.

[Operation method]
In the present embodiment, the turn signal lamp 101 is a sequential turn signal lamp. The sequential turn signal lamp is a chain-type turn signal lamp that sequentially lights 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 sequentially cause the plurality of first light emitting elements 41 and the plurality of second light emitting elements 51 to emit light.

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 sequentially emit light from the inside to the outside in the vehicle width direction. That is, in the present embodiment, after the plurality of first light emitting elements 41 sequentially emit light, the plurality of second light emitting elements 51 sequentially emit light.

[effect]
As described above, according to the present embodiment, the turn signal lamp 101 of the vehicle lamp 100 has a first optical system 40 and a second optical system 50 having different optical structures. In the present embodiment, the orientation of the optical axis AX of the first optical system 40 and the orientation of the optical axis BX of the second optical system 50 are different. As a result, the aesthetics caused by the person who sees the first optical system 40 and the aesthetics caused by the person who sees the second optical system 50 can be different. Therefore, the appearance of the vehicle lamp 100 is improved.

Further, in the present embodiment, the first translucent region 31 faces rearward, and the second translucent region 32 faces sideways. The optical axis AX of the first optical system 40 extends rearwardly, and the optical axis BX of the second optical system 50 extends laterally. As a result, it is possible to make the aesthetics of causing the turn signal lamp 101 to be caused by a person viewed from the rear different from the aesthetic of causing the turn signal lamp 101 to be caused by a person viewed from the side. Therefore, the appearance of the vehicle lamp 100 is improved.

Further, in the present embodiment, the turn signal lamp 101 has a first light guide body 42 and a second light guide body 52 that are adjacent to each other. The tail stop lamp 102 has a third light guide body 62 that is arranged outside the vehicle with respect to the first light guide body 42 and the second light guide body 52. Since the first light guide body 42 and the second light guide body 52 through which the light passes and the third light guide body 62 through which the light passes intersect three-dimensionally, the appearance of the vehicle lamp 100 is further improved.

Further, in the present embodiment, the exit surface 44 of the first light guide 42 includes a plurality of minute convex surfaces 47 arranged in a matrix, and the exit surface 54 of the second light guide 52 has a matrix. Includes a plurality of microconvex surfaces 57 to be arranged. Therefore, by adjusting the direction of the convex surface 47 and the direction of the convex surface 57, an arbitrary direction of the optical axis AX and a direction of the optical axis BX can be obtained.

Further, in the present embodiment, the plurality of convex surfaces 47 of the first light guide body 42 are arranged at different positions in the direction parallel to the optical axis AX, and the plurality of convex surfaces 57 of the second light guide body 52 are the optical axes. It is arranged at substantially the same position in the direction parallel to the BX. As a result, the impression given to the person who sees the turn signal lamp 101 from the rear and the impression given to the person who sees the turn signal lamp 101 from the side can be different. Therefore, the appearance of the vehicle lamp 100 is further improved.

Further, in the present embodiment, the vehicle lighting equipment 100 includes a turn signal lamp 101 that emits light through the first translucent region 31 and the second translucent region 32 of the outer cover 30, and the first translucent region 31. It is a combination lamp including a tail stop lamp 102 that emits light through a third translucent region 33 of the outer cover 30 between the and the second translucent region 32. In the appearance of the vehicle lighting equipment 100, the turn signal lamps 101 are arranged on both sides of the tail stop lamps 102. In the appearance of the vehicle lighting fixture 100, the tail stop lamp 102 is arranged so as to be included in the turn signal lamp 101. Therefore, the appearance of the vehicle lamp 100 is improved.

In the above-described embodiment, the light emitting element (41, 51, 61) is a light emitting diode (LED). The light emitting element (41, 51, 61) may be an organic electroluminescent light emitter.

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. Further, 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 the other one.

1 ... vehicle, 2 ... car body, 3 ... traveling device, 4 ... tire, 5 ... wheel, 6 ... boarding / alighting door, 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 area , 32 ... 2nd translucent region, 33 ... 3rd translucent region, 40 ... 1st optical system, 41 ... 1st light emitting element, 41P ... flexible printed substrate, 42 ... 1st light guide body, 43 ... incident surface, 43A ... Incident surface, 43B ... Incident surface, 43C ... Reflection surface, 44 ... Exit surface, 45 ... Light guide path, 46 ... Projection, 47 ... Convex surface, 48 ... Flange, 50 ... Second optical system, 51 ... Second Light emitting element, 51P ... Flexible printed substrate, 52 ... Second light guide body, 53 ... Incident surface, 53A ... Incident surface, 53B ... Incident surface, 53C ... Reflection surface, 54 ... Exit surface, 55 ... Light guide path, 56 ... Projection Part, 57 ... Convex surface, 58 ... Flange part, 60 ... Third optical system, 61 ... Third light emitting element, 61P ... Flexible printed substrate, 62 ... Third light guide body, 63 ... Incident surface, 64 ... Emission surface, 65 ... light guide path, 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 lighting equipment, 101 ... 1st 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 (6)

Outer cover and
A first function lamp that emits light through the first translucent region and the second translucent region of the outer cover, and
A second function lamp that emits light through a third transmissive region of the outer cover between the first transmissive region and the second transmissive region is provided.
The direction of the optical axis of the first optical system of the first function lamp that guides light to the first translucent region and the optical axis of the second optical system of the first function lamp that guides light to the second translucent region. Different from the orientation of
Vehicle lighting equipment. The first translucent region faces rearward and
The second translucent region faces sideways.
The optical axis of the first optical system extends rearward and extends to the rear.
The optical axis of the second optical system extends laterally.
The vehicle lamp according to claim 1. The first optical system includes a first light emitting element and a first light guide body that guides light from the first light emitting element to the first light transmitting region.
The second optical system includes a second light emitting element and a second light guide body that guides light from the second light emitting element to the second light transmitting region.
The first light guide body and the second light guide body are adjacent to each other in a predetermined plane substantially parallel to the ground contact surface of the tire mounted on the vehicle.
The vehicle lamp according to claim 1 or 2. The exit surface of the first light guide body includes a plurality of convex surfaces arranged in a matrix.
The exit surface of the second light guide body includes a plurality of convex surfaces arranged in a matrix.
The optical axis of the first optical system includes the optical axis of the convex surface of the first light guide body.
The optical axis of the second optical system includes the optical axis of the convex surface of the second light guide body.
The vehicle lamp according to claim 3. Outer cover and
A first function lamp that emits light through a first translucent region and a second translucent region of the outer cover is provided.
The direction of the optical axis of the first optical system of the first function lamp that guides light to the first translucent region and the optical axis of the second optical system of the first function lamp that guides light to the second translucent region. Unlike the orientation of
The first optical system includes a first light emitting element and a first light guide body that guides light from the first light emitting element to the first light transmitting region.
The second optical system includes a second light emitting element and a second light guide body that guides light from the second light emitting element to the second light transmitting region.
The first light guide body and the second light guide body are adjacent to each other in a predetermined plane substantially parallel to the ground contact surface of the tire mounted on the vehicle.
The exit surface of the first light guide body includes a plurality of convex surfaces arranged in a matrix.
The exit surface of the second light guide body includes a plurality of convex surfaces arranged in a matrix.
The optical axis of the first optical system includes the optical axis of the convex surface of the first light guide body.
The optical axis of the second optical system includes the optical axis of the convex surface of the second light guide body.
Vehicle lighting equipment. The plurality of convex surfaces of the first light guide body are arranged at different positions in the optical axis direction of the convex surfaces of the first light guide body.
The plurality of convex surfaces of the second light guide body are arranged at substantially the same position in the optical axis direction of the convex surfaces of the second light guide body.
The vehicle lamp according to claim 4 or 5.

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