JP2021099957A - Vehicular lighting fixture - Google Patents

Abstract

To improve a connecting feeling between a lighting fixture unit on a fixed portion side and a lighting fixture on a moving portion side.SOLUTION: A vehicular lighting fixture is equipped with a fixed portion side unit and a moving portion side unit. The fixed portion side unit has a light source, a light guide body, an inner housing, an inner lens that has an inner front surface portion and an inner side surface portion, an outer lens that has an outer front surface portion and an outer side surface portion, and disposed so as to incline a back surface of the outer side surface portion to the moving portion side and make the outer side surface portion visible at a part of a clearance when viewed from a front surface, and a side diffusing portion that is disposed between the light guide body and the inner side surface portion, and emits light emitted from the light guide body to the clearance side to the clearance side in a diffusing state. The moving portion side unit has a moving portion side outer lens, and the moving portion side outer lens is disposed while a part facing the clearance is inclined by 90° to the clearance side with respect to a front surface direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle lamp.

Conventionally, there are known vehicle lighting fixtures that are arranged at the rear of a vehicle so as to straddle the vehicle body side and the back door side (see, for example, Patent Document 1). Such a vehicle lamp has a configuration including a lamp unit on the vehicle body side and a lamp unit on the back door side.

Japanese Unexamined Patent Publication No. 2014-123547

In the vehicle lighting equipment described in Patent Document 1, the lighting equipment unit on the vehicle body side and the lighting equipment unit on the back door side are arranged with a gap. Therefore, when the vehicle lamp is lit, the lamp unit on the vehicle body side and the lamp unit on the back door side are lit with a gap, and a feeling of connection between the two lamp units cannot be sufficiently obtained. In a vehicle lamp that is arranged so as to straddle between the fixed portion side and the movable portion side of the vehicle, such as between the vehicle body and the back door, the lamp unit on the fixed portion side and the lamp on the movable portion side. There is a need for a configuration that enhances the sense of connection with the unit.

The present invention has been made in view of the above, and an object of the present invention is to provide a vehicle lamp that can improve the feeling of connection between the lamp unit on the fixed portion side and the lamp unit on the movable portion side. To do.

The vehicle lighting fixture according to the present invention is attached to the movable portion with a gap between the fixed portion side unit arranged in the fixed portion of the vehicle having the fixed portion and the movable portion and the fixed portion side unit. The fixed portion side unit includes a movable portion side unit to be arranged, and the fixed portion side unit includes a light source, a light guide body that guides the light of the light source, an inner housing that holds the light guide body, and the vehicle-mounted state. An inner lens having an inner front portion arranged on the front side of the light guide body and an inner side surface portion arranged on the gap side of the light guide body, and an outer front portion covering the inner front portion in a vehicle mounted state. And an outer side surface portion that covers the inner side surface portion, and the back surface side of the outer side surface portion is tilted toward the movable portion side so that the outer side surface portion can be visually recognized in the gap portion when viewed from the front. The outer lens is arranged between the light guide body and the inner side surface portion, and the light emitted from the light guide body to the gap side is diffused and transmitted and emitted to the gap side. The movable portion side unit has a movable portion side outer lens, and the movable portion side outer lens has a portion facing the gap 90 on the gap side with respect to the front direction. ° Placed in a tilted state.

Further, the lateral diffusion portion may extend to the front side so that the end portion on the front side in the vehicle-mounted state is close to or in contact with the inner front portion.

Further, the lateral diffusion portion, the inner side surface portion and the outer side surface portion are plate-shaped and may be arranged in parallel or substantially parallel to each other.

Further, the light guide body may have an end surface that is arranged at the end portion on the gap side and faces the lateral diffusion portion.

Further, the inner housing may have a thin wall portion arranged between the light guide body and the inner side surface portion, and the lateral diffusion portion may be provided on the thin wall portion.

Further, the lateral diffusion portion may be provided as a member separate from the inner housing. In this case, the lateral diffusion portion may be held by the inner housing.

According to the present invention, it is possible to improve the feeling of connection between the lamp unit on the fixed portion side and the lamp unit on the movable portion side.

FIG. 1 is a diagram showing an example of the rear part of the vehicle according to the first embodiment. FIG. 2 is a diagram schematically showing an example of a vehicle lamp according to the first embodiment. FIG. 3 is a diagram showing an example of a lighting state of the vehicle lamp according to the comparative example. FIG. 4 is a diagram showing an example of a lighting state of the vehicle lamp according to the first embodiment. FIG. 5 is a diagram schematically showing an example of a vehicle lamp according to the second embodiment.

Hereinafter, embodiments of the vehicle lamp according to the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

[First Embodiment]
FIG. 1 is a diagram showing an example of the rear part of the vehicle 1 according to the first embodiment. As shown in FIG. 1, 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 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 vehicle 1 includes a boarding / alighting door 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 and the back door 7 are each movably supported by the vehicle body 2 via a hinge mechanism.

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. The front-rear, up-down, and left-right directions are the directions in the vehicle-mounted state in which the vehicle lighting equipment is mounted on the vehicle, and indicate the directions when the traveling direction of the vehicle is viewed from the driver's seat. In this embodiment, it is assumed that the vertical direction is parallel to the vertical direction, and the front-back direction and the left-right direction are parallel to the horizontal direction.

In the present embodiment, the vehicle lamp 100 is provided on the left side and the right side of the rear portion of the vehicle body 2, respectively. In the present embodiment, the vehicle lamp 100 is provided at the rear of the vehicle body 2. Therefore, the rear side in the front-rear direction will be described as the front side of the vehicle lighting fixture 100, and the front side in the front-rear direction will be described as the back side of the vehicle lighting fixture 100.

The vehicle lamp 100 includes a functional lamp. As functional lamps, a tail lamp provided at the rear of the vehicle body 2 and lit in conjunction with the lighting of the headlamp, a stop lamp provided at the rear of the vehicle body 2 and lit in conjunction with the operation of the brake device, and a stop lamp provided at the rear of the vehicle body 2 are provided. Examples thereof include a rear turn signal lamp that lights up to indicate the traveling direction of the vehicle 1 to the surroundings.

The vehicle lamp 100 is arranged so as to straddle the vehicle body 2 side and the back door 7 side, respectively. In the present embodiment, the vehicle body 2 is a fixed portion. Further, the back door 7 is a movable portion. 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 side of the rear portion of the vehicle body 2 are symmetrical in the left-right direction and are substantially the same structure. Hereinafter, the vehicle lighting fixture 100 provided on the right 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 left side of the rear portion of the vehicle body 2 will be simplified or omitted.

FIG. 2 is a diagram schematically showing an example of a vehicle lamp 100 according to the present embodiment. FIG. 2 shows a configuration along the AA cross section in FIG. The vehicle lamp 100 includes a fixed portion side unit 10 arranged on the vehicle body 2 side which is a fixed portion, and a movable portion side unit 20 arranged on the back door 7 side which is a movable portion. The fixed portion side unit 10 and the movable portion side unit 20 are separated with a gap 30.

The fixed portion side unit 10 includes a light source 11, a light guide body 12, an inner housing 13, an inner lens 14, an outer lens 15, a lamp housing 16, and a lateral diffusion portion 17.

The light source 11 is a semiconductor type light source such as an LED. The light source 11 supplies light to the fixed portion side unit 10.

The light guide body 12 emits light from the light source 11 toward the front side (rear side). The light guide body 12 has an end surface 12a at an end on the back door 7 side (movable portion side, left side). In the light guide body 12, a part of the light from the light source 11 is emitted to the left from the end face 12a. The end face 12a is, for example, flat. By providing the end face 12a at the left end of the light guide body 12, a part of the light of the light source 11 can be efficiently emitted to the left. The end surface 12a is arranged parallel to or substantially parallel to the inner side surface portion 14b and the outer side surface portion 15b, which will be described later.

The inner housing 13 holds the light guide body 12. The inner housing 13 is formed by using a resin material having a color similar to the lighting color of the vehicle lamp 100 or a light color such as white or gray. The inner housing 13 has a base portion 13a and a thin wall portion 13b. The base portion 13a is arranged on the back surface side of the light guide body 12. The thin wall portion 13b is a portion bent from the left end portion of the base portion 13a to the front side. The thin wall portion 13b is arranged between the light guide body 12 and the inner side surface portion 14b of the inner lens 14.

The thin wall portion 13b is formed so as to be thinner than the base portion 13a. The thickness of the thin wall portion 13b is set to a value at which light emitted from the end surface 12a of the light guide body 12 can be transmitted. The thickness of such a thin wall portion 13b can be, for example, 2.5 mm or less. By arranging the thin wall portion 13b, the light from the end face 12a is diffused not only in the region facing the end face 12a but also in the entire thin wall portion 13b when passing through the thin wall portion 13b. Therefore, the transmitted light transmitted through the thin wall portion 13b is emitted from the entire thin wall portion 13b toward the inner side surface portion.

As described above, in the present embodiment, the thin wall portion 13b diffuses the light emitted from the light guide body 12 to the side of the back door 7, and then emits the light emitted to the inner side surface portion 14b side. It is provided as. In other words, the lateral diffusion portion 17 is provided on the thin wall portion 13b. The front end of the thin wall portion 13b extends to the vicinity of the inner front portion 14a of the inner lens 14, which will be described later.

The inner lens 14 transmits the light emitted from the light guide body 12. The inner lens 14 is arranged so as to cover the front side and the left side (back door 7 side) of the light guide body 12. The inner lens 14 has a plate shape and is bent in an L shape in a cross-sectional view. The inner lens 14 has an inner front surface portion 14a and an inner side surface portion 14b. The inner front surface portion 14a is arranged on the front surface side of the light guide body 12. The inner side surface portion 14b is arranged on the left side of the light guide body 12. The inner side surface portion 14b is provided in a range that covers substantially the entire outer surface of the thin wall portion 13b.

The outer lens 15 emits the light emitted from the inner lens 14 to the outside of the vehicle lamp 100. The outer lens 15 has a plate shape and is bent in an L shape in a cross-sectional view along the inner lens 14. The outer lens 15 accommodates each part of the vehicle lamp 100 together with the lamp housing 16. The outer lens 15 is formed by using, for example, a transparent or a resin material having a color similar to the lighting color.

The outer lens 15 has an outer front surface portion 15a and an outer side surface portion 15b. The outer front portion 15a is arranged on the front side of the inner front portion 14a. The outer side surface portion 15b is arranged on the side (left side) of the inner side surface portion 14b on the back door 7 side. The outer side surface portion 15b is arranged so that the back surface side is inclined toward the back door 7 side (left side) so that the outer side surface portion 15b can be visually recognized at the portion of the gap 30 when viewed from the front. The outer side surface portion 15b is arranged in close proximity to or in contact with the outer surface of the inner side surface portion 14b. The outer side surface portion 15b is arranged parallel to or substantially parallel to the end surface portion 12a, the thin wall portion 13b, and the inner side surface portion 14b.

Further, as shown in FIG. 2, the movable portion side unit 20 includes a light source 21, a light guide body 22, an inner housing 23, an inner lens 24, an outer lens (movable side outer lens) 25, and a lamp housing 26. And.

The light source 21 is a semiconductor type light source such as an LED. The light source 21 supplies light to the movable unit side unit 20. The light guide body 22 emits light from the light source 21 toward the front side (rear side). The inner housing 23 holds the light guide body 22. The inner lens 24 transmits the light emitted from the light guide body 22.

The outer lens 25 emits the light emitted from the inner lens 24 to the outside of the vehicle lamp 100. The outer lens 25 has a plate shape and is arranged along the inner lens 24. The outer lens 25 is arranged in a state where the side surface portion 25a, which is a portion facing the gap 30, is tilted 90 ° toward the gap 30 with respect to the front direction. In the present embodiment, the side surface portion 25a is arranged vertically in the left-right direction. The inner lens 24 has a side surface portion 24a arranged along the side surface portion 25a of the outer lens 25. The side surface portion 24a is arranged parallel to or substantially parallel to the side surface portion 25a. The side surface portion 24a may be arranged at an angle with respect to the side surface portion 25a.

Next, an example of the operation of the vehicle lamp 100 configured as described above will be described. When a predetermined operation such as an operation of a direction indicator on the vehicle side or an operation of a hazard switch is performed by the driver, the vehicle lamp 100 determines the light source 11 and the movable portion of the fixed unit side unit 10 in response to the operation. Light is emitted from the light source 21 of the side unit 20 respectively.

The light emitted from the light source 11 of the fixed portion side unit 10 enters the light guide body 12 and is guided by the light guide body 12. A part of this light is emitted from the light guide body 12 to the front side, passes through the inner front portion 14a of the inner lens 14, and is emitted to the front from the outer front portion 15a of the outer lens 15. As a result, the lighting area AR1 of the outer front portion 15a is lit.

Further, a part of the light guided by the light guide body 12 is emitted from the end surface 12a and incident on the thin wall portion 13b (side diffusion portion 17) of the inner housing 13. The light incident on the thin wall portion 13b is diffused while passing through the thin wall portion 13b, and is emitted toward the inner side surface portion 14b of the inner lens 14. This light passes through the inner side surface portion 14b and is emitted from the outer side surface portion 15b of the outer lens 15 into the gap 30. As a result, the lighting area AR3 of the outer side surface portion 15b is lit.

On the other hand, the light emitted from the light source 21 of the movable unit side unit 20 enters the light guide body 22 and is guided by the light guide body 22. This light is emitted from the light guide body 22, passes through the inner lens 24, and is emitted from the outer lens 25 to the front. As a result, the lighting area AR2 of the outer lens 25 is lit.

FIG. 3 is a diagram showing an example of a lighting state of the vehicle lamp according to the comparative example. The vehicle lamp shown in FIG. 3 has a configuration in which a thin wall portion 13b (side diffusion portion 17) is not provided and a light shielding portion is provided in place of the thin wall portion 13b. Is similar to. In the example shown in FIG. 3, since the light emitted from the end surface 12a of the light guide body 12 is blocked by the light shielding portion, the outer side surface portion 15b of the outer lens 15 is not lit. Therefore, the lighting area AR1 of the outer front portion 15a and the lighting area AR2 of the outer lens 25 of the movable portion side unit 20 are separated from each other, and a sufficient sense of connection cannot be obtained.

On the other hand, FIG. 4 is a diagram showing an example of a lighting state of the vehicle lamp 100 according to the present embodiment. In the example shown in FIG. 4, the lighting region AR3 is formed on the outer side surface portion 15b by providing the thin wall portion 13b (side diffusion portion 17). That is, the lighting area AR3 is formed between the lighting area AR1 of the outer front surface portion 15a and the lighting area AR2 of the outer lens 25 of the movable portion side unit 20. Therefore, it is possible to give the viewer the impression that the lighting area AR1 and the lighting area AR2 are connected by the lighting area AR3.

As described above, in the vehicle lighting tool 100 according to the present embodiment, a gap 30 is provided between the fixed portion side unit 10 arranged in the fixed portion (vehicle body 2) of the vehicle 1 and the fixed portion side unit 10. A movable portion side unit 20 arranged in a movable portion (back door 7) in a state is provided, and the fixed portion side unit 10 includes a light source 11, a light guide body 12 that guides the light of the light source 11, and a light guide body. An inner lens 14 having an inner housing 13 for holding the light guide body 12, an inner front surface portion 14a arranged on the front side of the light guide body 12, and an inner side surface portion 14b arranged on the gap 30 side of the light guide body 12. The outer front surface portion 15a that covers the inner front surface portion 14a and the outer side surface portion 15b that covers the inner side surface portion 14b are provided, and the outer side surface portion 15b is visible in the gap 30 when viewed from the front. The back side of the portion 15b is arranged between the outer lens 15 arranged so as to be inclined toward the back door 7 side, and the light guide body 12 and the inner side surface portion 14b, and the light emitted from the light guide body 12 to the gap 30 side is emitted. It has a lateral diffusion portion 17 (thin wall portion 13b) that diffuses and transmits and emits light to the gap 30 side, the movable portion side unit 20 has an outer lens 25, and the outer lens 25 is in the gap 30. The facing side surface portion 25a is arranged in a state of being tilted 90 ° toward the gap 30 side with respect to the front direction.

According to this configuration, the light emitted from the end surface 12a of the light guide body 12 is diffused by the side diffusion portion 17 (thin wall portion 13b), and is emitted to the gap 30 side through the side diffusion portion 17. , It is emitted from the outer side surface portion 15b through the inner side surface portion 14b. Therefore, the lighting region AR3 is formed on the outer side surface portion 15b. That is, the lighting area AR3 is formed between the lighting area AR1 of the outer front surface portion 15a and the lighting area AR2 of the outer lens 25 of the movable portion side unit 20. Therefore, it is possible to give the viewer the impression that the lighting area AR1 and the lighting area AR2 are connected by the lighting area AR3. Thereby, the feeling of connection between the fixed portion side unit 10 and the movable portion side unit 20 can be improved. Further, since the light is diffused by the lateral diffusing portion 17, it is possible to suppress the formation of spotlight in the lighting region AR3. Further, since the side surface portion 25a of the movable portion side unit 20 is arranged in a state of being tilted 90 ° toward the gap 30 side with respect to the front direction, the lighting area AR3 can be easily seen in the front view.

Further, the lateral diffusion portion 17 extends to the front side so that the end portion on the front side side approaches or contacts the inner front surface portion 14a. As a result, the light can be incident on the portion close to the front side of the inner side surface portion 14b, so that the lighting area AR3 can be widely secured.

Further, the lateral diffusion portion 17, the inner side surface portion 14b and the outer side surface portion 15b are plate-shaped and are arranged in parallel or substantially parallel to each other. As a result, the configuration of the fixed portion side unit 10 on the gap 30 side can be made compact.

Further, the light guide body 12 has an end surface 12a which is arranged at the end portion on the gap 30 side and faces the lateral diffusion portion 17. As a result, light can be efficiently supplied to the lateral diffusion unit 17.

Further, the inner housing 13 has a thin wall portion 13b arranged between the light guide body 12 and the inner side surface portion 14b, and the lateral diffusion portion 17 is provided on the thin wall portion 13b. As a result, the feeling of connection between the fixed portion side unit 10 and the movable portion side unit 20 can be improved without providing a separate member as the side diffusion portion 17, so that the number of parts can be suppressed.

[Second Embodiment]
FIG. 5 is a diagram schematically showing an example of the vehicle lamp 200 according to the second embodiment. FIG. 5 corresponds to the configuration along the AA cross section in FIG. Hereinafter, the same configurations as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted or simplified. As shown in FIG. 5, the vehicle lighting fixture 200 includes a fixed portion side unit 110 arranged on the vehicle body side, which is a fixed portion, and a movable portion side unit 120 arranged on the back door side, which is a movable portion. The fixed portion side unit 110 and the movable portion side unit 120 are separated with a gap 130.

The fixed portion side unit 110 includes a light source 11, a light guide body 12, an inner housing 113, an inner lens 14, an outer lens 15, a lamp housing 16, and a lateral diffusion portion 117.

In the present embodiment, the configurations of the inner housing 113 and the lateral diffusion portion 117 are different from those in the first embodiment. The inner housing 113 is arranged on the back surface side of the light guide body 12. The lateral diffusion portion 117 is supported by the end portion of the inner housing 113 on the gap 130 side. In the present embodiment, the lateral diffusion portion 117 is provided as a member separate from the inner housing 113. The lateral diffusing portion 117 is a lens having a light diffusing portion such as a prism portion or a textured portion on a surface facing the end surface 12a or a surface facing the inner side surface portion 14b of the inner lens 14. The lateral diffusing portion 117 diffuses and transmits the light emitted from the end surface 12a of the light guide body 12, and emits the light to the gap 130 side. The lateral diffusing portion 117 is not limited to the lens, and is a transparent material or a diffusing material as long as the light emitted from the end surface 12a of the light guide body 12 can be diffused and transmitted to the gap 130 side. , Other types of members such as milky white material may be used.

In the vehicle lamp 200, the light emitted from the end surface 12a of the light guide body 12 is diffused by the side diffusing portion 117, and is transmitted to the gap 30 side through the side diffusing portion 117 to emit the inner side surface portion 14b. It is transmitted and emitted from the outer side surface portion 15b. Therefore, as in the first embodiment, the lighting region AR3 is formed on the outer side surface portion 15b.

In the vehicle lamp 200 according to the present embodiment, the lateral diffusion portion 117 is provided as a member separate from the inner housing 113. Thereby, the dimensions and the like of the side diffusion portion 117 can be individually set regardless of the configuration of the inner housing 113. Therefore, optical design is easy and restrictions on production requirements are relaxed.

In the vehicle lighting equipment 200 described above, the side diffusion portion 117 is held by the inner housing 113. As a result, the lateral diffusion portion 117 can be reliably held.

The technical scope of the present invention is not limited to each of the above embodiments, and modifications can be made as appropriate without departing from the spirit of the present invention. For example, in each of the above embodiments, the case where the movable portion is the back door 7 has been described as an example, but the present invention is not limited to this. The movable portion side unit 20 may be provided in a movable portion different from the back door 7.

Further, in each of the above embodiments, the configuration in which the fixed portion side unit 10 and the movable portion side unit 20 are attached to the rear portion of the vehicle has been described as an example, but the present invention is not limited thereto. The fixed portion side unit 10 and the movable portion side unit 20 may be attached to different positions from the rear portion such as the front portion and the side portion of the vehicle.

Further, in each of the above embodiments, the configuration in which the fixed portion side unit 10 and the movable portion side unit 20 are arranged in the left-right direction has been described as an example, but the present invention is not limited to this. The fixed portion side unit 10 and the movable portion side unit 20 may be arranged in a direction different from the left and right direction, such as a vertical direction, a front-rear direction, or a direction in which front, back, left, right, and up and down are combined.

AR1, AR2, AR3 ... Lighting area, 1 ... Vehicle, 2 ... Body, 3 ... Traveling device, 4 ... Tire, 7 ... Back door, 10,110 ... Fixed part side unit, 11,21 ... Light source, 12, 22 ... Light guide body, 12a ... end face, 13, 23, 113 ... inner housing, 13a ... base, 13b ... thin wall part, 14, 24 ... inner lens, 14a ... inner front part, 14b ... inner side surface part, 15, 25 ... Outer lens, 15a ... outer front part, 15b ... outer side surface part, 16,26 ... lamp housing, 17,117 ... side diffusion part, 20,120 ... movable part side unit, 24a, 25a ... side part, 30,130 ... Gap, 100, 200 ... Vehicle lighting

Claims (7)

A fixed portion side unit arranged in the fixed portion of a vehicle having a fixed portion and a movable portion, and a movable portion side unit arranged in the movable portion with a gap between the fixed portion side unit and the fixed portion side unit. Prepare,
The fixed part side unit is
Light source and
A light guide body that guides the light of the light source and
An inner housing that holds the light guide and
An inner lens having an inner front surface portion arranged on the front side of the light guide body and an inner side surface portion arranged on the gap side of the light guide body in a vehicle-mounted state.
It has an outer front surface portion that covers the inner front surface portion and an outer side surface portion that covers the inner side surface portion in a vehicle-mounted state, and the outer side surface portion is visible in the gap portion when viewed from the front. An outer lens in which the back side of the outer side surface is tilted toward the movable part, and
It is arranged between the light guide body and the inner side surface portion, and has a lateral diffusion portion that diffuses and transmits the light emitted from the light guide body to the gap side and emits the light to the gap side. And
The movable part side unit has a movable part side outer lens.
The movable portion side outer lens is a vehicle lamp arranged in a state where a portion facing the gap is tilted 90 ° toward the gap side with respect to the front direction. The vehicle lamp according to claim 1, wherein the lateral diffusion portion extends to the front side so that an end portion on the front side in a vehicle-mounted state is close to or in contact with the inner front portion. The vehicle lamp according to claim 1 or 2, wherein the lateral diffusion portion, the inner side surface portion, and the outer side surface portion are plate-shaped and arranged in parallel or substantially parallel to each other. The vehicle lamp according to any one of claims 1 to 3, wherein the light guide body is arranged at an end portion on the gap side and has an end surface facing the lateral diffusion portion. The inner housing has a thin wall portion arranged between the light guide body and the inner side surface portion.
The vehicle lamp according to any one of claims 1 to 4, wherein the lateral diffusion portion is provided on the thin wall portion. The vehicle lamp according to any one of claims 1 to 4, wherein the lateral diffusion portion is provided as a member separate from the inner housing. The vehicle lamp according to claim 6, wherein the lateral diffusion portion is held in the inner housing.

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