WO2026009593A1 - Vehicle lamp and saddled vehicle comprising same - Google Patents

Abstract

A tail light (50) comprises an inner lens (10) that guides light from an LED light source (40) to an outer lens. The inner lens (10) has a light-guide part (16, 17) and a plurality of lens cut portions (15). The plurality of lens cut portions (15) include: a first inner lens cut portion (11) that overlaps with the LED light source (40) when viewed along the optical axis (K) of the LED light source (40); and a first outer lens cut portion (21) that is disposed at a position further away from the LED light source (40) than the first inner lens cut portion (11) and that that is separate from the first inner lens cut portion (11).

Description

Vehicle lighting fixture and saddle-type vehicle equipped with same

The present invention relates to a vehicle lighting fixture and a saddle-type vehicle equipped with the same.

Lamps equipped with LED light sources have been known for some time as vehicle lamps, such as taillights. LED light sources are so-called point light sources, and their illumination range is relatively narrow. Therefore, vehicle lamps equipped with multiple LED light sources are used to illuminate a wide range.

However, vehicle lamps equipped with multiple LED light sources are relatively expensive. Japanese Patent Application Laid-Open Publication No. 2010-287391 describes a vehicle lamp designed to brightly illuminate the entire outer lens using a single LED light source. In this vehicle lamp, the light-emitting portion of the inner lens is tapered. The tip of the light-emitting portion is offset to the side from the main optical axis of the LED light source. The inclined surface of the light-emitting portion is formed asymmetrically with respect to the main optical axis of the LED light source. Japanese Patent Application Laid-Open Publication No. 2010-287391 describes that light from the LED light source is diffused over a wide area by the inclined surface of the light-emitting portion, allowing the entire outer lens to be brightly illuminated using a single LED light source.

JP 2010-287391 A

However, with the vehicle lamp disclosed in JP 2010-287391 A, the diffused light appears monotonous to those viewing the vehicle lamp, and some people may perceive the bright areas as being small.

The object of the present invention is to provide a vehicle lamp that is easily perceived as large by those viewing it, even when equipped with only a small number of LED light sources, and a straddle-type vehicle equipped with the same.

The vehicle lamp disclosed herein comprises an LED light source that emits light along an optical axis extending in a first direction, an outer lens, and an inner lens that guides the light from the LED light source to the outer lens. The inner lens has a light-guiding section and multiple lens cut sections, each consisting of a concave or convex section, that diffuse the light that has passed through the light-guiding section. The multiple lens cut sections include a first inner lens cut section that is positioned to overlap with the LED light source when viewed along the optical axis, and a first outer lens cut section that is positioned farther from the LED light source than the first inner lens cut section and is separated from the first inner lens cut section. Note that the term "optical axis" used in this specification refers to the so-called main optical axis. The "optical axis" refers to the optical center axis of radiation from a light source, and is the direction of radiation with the highest luminous intensity.

In the above-described vehicle lamp, the inner lens has multiple lens cut sections. Each lens cut section diffuses light, making the outer lens shine brightly. Of the multiple lens cut sections, the first inner lens cut section is located at the back (closer to the LED light source) and the first outer lens cut section is located at the front (farther from the LED light source), and they are separated from each other. As a result, the inner lens appears to shine in a three-dimensional manner. Therefore, even if the vehicle lamp does not have many LED light sources, viewers are likely to perceive the vehicle lamp as large.

The distance in the first direction between the first inner lens cut portion and the first outer lens cut portion may be longer than the distance in the first direction between the first inner lens cut portion and the LED light source.

As a result, the distance between the first inner lens cut portion and the first outer lens cut portion is relatively long, making the inner lens appear to shine more three-dimensionally. This makes the vehicle lamp appear larger to the viewer.

The inner lens may have a first inner block consisting of a plurality of lens cut portions, including the first inner lens cut portion, arranged in a continuous line. The first inner block may be arranged to the side of the optical axis and have an inclined surface inclined relative to the optical axis.

When viewed along the optical axis, the portion of the inner lens that overlaps with the LED light source and the surrounding area tends to be brighter than the portion farther from the LED light source. This raises concerns that the brightness of the inner lens will be uneven, which in turn will lead to uneven brightness of the outer lens. However, as described above, the first inner block has an inclined surface that is inclined with respect to the optical axis. Because the inclined surface diffuses light in a direction inclined from the optical axis, the inner lens can illuminate a wide area of the outer lens, reducing uneven brightness of the inner lens.

The inner lens may include one or more second inner lens cut portions spaced apart from the first inner lens cut portion in a direction perpendicular to the first direction. The distance in the first direction between the second inner lens cut portion and the first outer lens cut portion may be longer than the distance in the first direction between the second inner lens cut portion and the LED light source.

This makes the vehicle lighting fixture appear larger to the viewer.

The inner lens may have a first inner block having a plurality of lens cut portions, including the first inner lens cut portion, arranged in a continuous line, and one or more second inner blocks having a plurality of lens cut portions, including the second inner lens cut portion, arranged in a continuous line. The first inner block and the second inner block may extend in a second direction perpendicular to the first direction. The first inner block and the second inner block may be spaced apart from each other in a third direction perpendicular to the first direction and the second direction.

This makes the vehicle lighting fixture appear larger to the viewer.

The second inner block may be positioned closer to the first direction than the first inner block.

This makes the inner lens appear to shine more three-dimensionally, making the vehicle lamp appear larger to the viewer.

The inner lens may be arranged farther from the LED light source than the first inner lens cut portion and may include a second outer lens cut portion separated from the first inner lens cut portion. The first outer lens cut portion may be arranged on a side of the first inner lens cut portion in a second direction perpendicular to the first direction. The second outer lens cut portion may be arranged on the opposite side of the first inner lens cut portion in the second direction.

This makes the vehicle lighting fixture appear larger to the viewer.

The inner lens may have a first outer block having a plurality of lens cut portions, including the first outer lens cut portion, arranged in a continuous line, and a second outer block having a plurality of lens cut portions, including the second outer lens cut portion, arranged in a continuous line. The first outer block and the second outer block may extend in a third direction perpendicular to the first direction and the second direction, or in a direction inclined with respect to the third direction. The first outer block and the second outer block may be spaced apart from each other in the second direction.

This makes the vehicle lighting fixture appear larger to the viewer.

The first outer block and the second outer block may extend in such a way that the further they extend in the first direction, the more they extend in the third direction.

This makes the inner lens appear to shine more three-dimensionally, making the vehicle lamp appear larger to the viewer.

The plurality of lens cut portions may be arranged farther from the LED light source than the first inner lens cut portion and may include a second outer lens cut portion separated from the first inner lens cut portion. The inner lens may have a first outer block formed by a continuous line of a plurality of lens cut portions including the first outer lens cut portion, and a second outer block formed by a continuous line of a plurality of lens cut portions including the second outer lens cut portion. The first outer block and the second outer block may extend in a third direction perpendicular to the first direction and the second direction, or in a direction inclined with respect to the third direction. The first outer block and the second outer block may be spaced apart from each other in the second direction. When viewed along the optical axis, the first inner block and the second inner block may be arranged between the first outer block and the second outer block.

This makes the vehicle lighting fixture appear larger to the viewer.

When viewed along the optical axis, the ratio of the total area of the plurality of lens cut portions to a circle having a radius of r and centered on the optical axis may be 20 to 40%, where r is the distance between the optical axis and the portion of the plurality of lens cut portions that is farthest from the optical axis.

This allows the inner lens to illuminate a wide area of the outer lens while maintaining localized brightness on the outer lens.

The vehicle lamp may be equipped with only a single LED light source as a light source.

This allows for lower costs for vehicle lighting fixtures.

The saddle-type vehicle disclosed herein is equipped with the vehicle lamp.

The saddle-type vehicle disclosed herein may include a vehicle body and a taillight disposed at the rear of the vehicle body, the taillight being the vehicle lamp. The first direction, the second direction, and the third direction may be rearward in the vehicle's longitudinal direction, leftward in the vehicle's lateral direction, and upward in the vehicle's vertical direction, respectively.

The first inner block and the second inner block may be formed so that, when viewed from the rear of the vehicle, the inner block located higher has a larger dimension in the left-right direction of the vehicle. The first outer block and the second outer block may extend outward in the vehicle width direction the higher they are located when viewed from the rear of the vehicle.

The present invention provides a vehicle lamp that is easily perceived as large by those viewing it, even when equipped with only a small number of LED light sources, and a straddle-type vehicle equipped with the same.

FIG. 1 is a left side view of a motorcycle according to an embodiment. FIG. 2 is a front view of the taillight. FIG. 3 is a left side view of the taillight. FIG. 4 is a front view of the taillight with the outer lens removed. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a perspective view of the inner lens. FIG. 8 is a horizontal cross-sectional view of the inner lens. FIG. 9 is a diagram schematically illustrating the inner block and the outer block when viewed along the optical axis of the LED light source.

Embodiments of a vehicle lamp and a saddle-type vehicle will now be described with reference to the drawings. FIG. 1 is a left side view of a motorcycle 1, which is an example of a saddle-type vehicle. Motorcycle 1 includes a vehicle body and a tail light 50, which is an example of a vehicle lamp, located at the rear of the vehicle body.

Motorcycle 1 comprises a body frame 2 having a head pipe 3, a power unit 5 supported by the body frame 2, a seat 7 supported by the body frame 2, a front wheel 8F, and a rear wheel 8B. A steering shaft (not shown) is rotatably supported on the head pipe 3. A handlebar 9 is fixed to the upper part of the steering shaft. A front fork 4 is fixed to the lower part of the steering shaft. The front wheel 8F is attached to the lower end of the front fork 4. The power unit 5 has a driving source for traveling such as an internal combustion engine or an electric motor. The front end of a rear arm 6 is swingably supported on the power unit 5 by a pivot shaft 6a. The rear wheel 8B is attached to the rear end of the rear arm 6.

Figure 2 is a front view of the taillight 50, as seen from behind in the vehicle's longitudinal direction. Figure 3 is a left side view of the taillight 50. The taillight 50 comprises an inner case 45 and an outer lens 20. Figure 4 is a front view of the taillight 50 with the outer lens 20 removed. Figure 5 is a cross-sectional view taken along line V-V in Figure 2. Figure 6 is a cross-sectional view taken along line VI-VI in Figure 2. The taillight 50 comprises an LED light source 40 that emits light along an optical axis K extending in the first direction A1, and an inner lens 10 that guides the light from the LED light source 40 to the outer lens 20. The optical axis K refers to the optical center axis of light emitted by the LED light source 40, and is also known as the main optical axis. The optical axis K coincides with the direction of emission of the maximum luminous intensity from the LED light source 40.

The second direction A2 is perpendicular to the first direction A1. The third direction A3 is perpendicular to the first direction A1 and the second direction A2. Here, the first direction A1 corresponds to the rear in the longitudinal direction of the vehicle. The second direction A2 corresponds to the left in the lateral direction of the vehicle. The third direction A3 corresponds to the upper side in the vertical direction of the vehicle. In the following description of the tail light 50, the side toward the first direction A1 may be referred to as the outer side, and the side opposite the first direction A1 as the inner side. For someone viewing the tail light 50 from behind the motorcycle 1, the outer side corresponds to the front side of the tail light 50, and the inner side corresponds to the rear side of the tail light 50.

As shown in FIG. 5, the tail light 50 of this embodiment has only a single LED light source 40 as a light source. The tail light 50 does not have any other light sources than the LED light source 40. The LED light source 40 is arranged so as to be oriented in the first direction A1. The LED light source 40 is arranged inside the inner lens 10. The LED light source 40 is arranged forward of the inner lens 10 in the longitudinal direction of the vehicle.

The outer lens 20 is fixed to the inner case 45. The inner lens 10 is disposed in the space partitioned by the outer lens 20 and the inner case 45. The inner lens 10 and the outer lens 20 are transparent. Note that, in this specification, "transparent" also includes so-called translucency. The inner lens 10 is colorless, and the outer lens 20 is red. However, the colors of the inner lens 10 and the outer lens 20 are not particularly limited. The materials of the inner lens 10 and the outer lens 20 are not particularly limited. Here, the inner lens 10 and the outer lens 20 are made of synthetic resin.

Figure 7 is a perspective view of the inner lens 10. The inner lens 10 has light guide sections 16 and 17 and multiple lens cut sections 15. The lens cut sections 15 are made of concave or convex sections and are formed to diffuse light that passes through the light guide sections 16 or 17. The lens cut sections 15 may be formed by cutting a portion of the inner lens 10 into a concave or convex shape, or by molding a concave or convex section without cutting the inner lens 10. The inner lens 10 has inner blocks 31 to 36, each of which has multiple lens cut sections 15 arranged in a row, and outer blocks 37 and 38, each of which has multiple lens cut sections 15 arranged in a row. The inner blocks 31 to 36 are positioned inward of the outer blocks 37 and 38.

As shown in Figure 4, inner blocks 31 to 36 each extend in the second direction A2. Each of inner blocks 31 to 36 is formed by a plurality of lens cut portions 15 that are continuously lined up without gaps in the second direction A2. Inner blocks 31 to 36 are lined up in the third direction A3. Inner blocks 31 to 35 are spaced apart from one another. A light guide portion 16 is disposed between inner block 31 and inner block 32, between inner block 32 and inner block 33, between inner block 33 and inner block 34, and between inner block 34 and inner block 35. Inner blocks 31 to 36 protrude outward from the light guide portion 16 (see Figure 6).

The dimensions of the inner blocks 31 to 36 in the second direction A2 increase as they move in the third direction A3. The higher the inner block, the larger the dimension in the left-right direction of the vehicle. The dimension of inner block 31 in the second direction A2 is larger than the dimension of inner block 32 in the second direction A2. The dimension of inner block 32 in the second direction A2 is larger than the dimension of inner block 33 in the second direction A2. The dimension of inner block 33 in the second direction A2 is larger than the dimension of inner block 34 in the second direction A2. The dimension of inner block 34 in the second direction A2 is larger than the dimension of inner block 35 in the second direction A2. The dimension of inner block 35 in the second direction A2 is larger than the dimension of inner block 36 in the second direction A2.

4, the inner block 33 has a first inner lens cut portion 11 positioned so as to overlap the LED light source 40 when viewed along the optical axis K. FIG. 8 is a horizontal cross-sectional view of the inner lens 10, including the optical axis K. As shown in FIG. 8, the inner block 33 has convex portions 14 that protrude in the first direction A1 on both sides of the first inner lens cut portion 11. The convex portions 14 are positioned to the sides of the optical axis K. The convex portions 14 have inclined surfaces 14a and 14b inclined with respect to the optical axis K. Note that "inclined with respect to the optical axis K" here means being non-parallel to the optical axis K. The inclined surface 14a is a surface inclined from the optical axis K so as to move away from the optical axis K as it moves in the first direction A1. The inclined surface 14b is a surface inclined from the optical axis K so as to move closer to the optical axis K as it moves in the first direction A1.

As shown in FIG. 4, the inner block 32 above the inner block 33 has a second inner lens cut portion 12 spaced apart in the third direction A3 from the first inner lens cut portion 11. The inner block 34 below the inner block 33 has a second inner lens cut portion 12 spaced apart from the first inner lens cut portion 11 in the direction opposite to the third direction A3. Here, the position of the first inner lens cut portion 11 in the second direction A2 is the same as the position of the second inner lens cut portion 12 in the second direction A2.

As shown in FIG. 6, the positions of inner blocks 31 to 36 in the first direction A1 are more outward as they move from the optical axis K in the third direction A3, and more outward as they move from the optical axis K in the opposite direction to the third direction A3. Inner block 31 is positioned more outward than inner block 32, which is positioned more outward than inner block 33. Inner block 34 is positioned more outward than inner block 33, inner block 35 is positioned more outward than inner block 34, and inner block 36 is positioned more outward than inner block 35. Furthermore, the light-guiding sections 16 positioned between inner blocks 31 to 35 are also more outward as they move from the optical axis K in the third direction, and more outward as they move from the optical axis K in the opposite direction to the third direction. Inner blocks 31 to 36 and the light-guiding sections 16 between them are formed concavely facing inward.

As shown in Figure 4, outer blocks 37 and 38 extend in a direction inclined with respect to the third direction A3. Outer blocks 37 and 38 are formed by a plurality of lens cut portions 15 arranged continuously without gaps in a direction inclined with respect to the third direction A3. Outer blocks 37 and 38 are spaced apart from each other in the second direction A2. When viewed along the optical axis K, inner blocks 31 to 36 are disposed between outer blocks 37 and 38. Outer block 37 extends more toward the second direction A2 as it moves toward the third direction A3. Outer block 38 extends more toward the opposite direction to the second direction A2 as it moves toward the third direction A3. The distance between outer blocks 37 and 38 in the second direction A2 becomes larger as it moves toward the third direction A3. The ends of the outer blocks 37 and 38 in the third direction A3 are closer to the third direction A3 than the inner block 31, and the ends of the outer blocks 37 and 38 in the opposite direction to the third direction A3 are closer to the opposite side of the third direction A3 than the inner block 36.

As shown in FIG. 5, the outer blocks 37 and 38 are positioned further outward than the inner blocks 31 to 36. A light guide section 17 extending in the first direction A1 is provided on the opposite side of the outer blocks 37 and 38 from the first direction A1. The distance in the first direction A1 between the outer blocks 37 and 38 and the LED light source 40 is greater than the distance in the first direction A1 between the inner blocks 31 to 36 and the LED light source 40.

As shown in Figure 6, outer blocks 37 and 38 are inclined relative to the vertical line. The outer blocks 37 and 38 extend in the third direction A3 as they move in the first direction A1. The outer blocks 37 and 38 are positioned further outward as they move in the third direction A3.

As shown in FIG. 5, the outer block 37 has a first outer lens cut portion 21 that is positioned farther from the LED light source 40 than the first inner lens cut portion 11. The outer block 38 has a second outer lens cut portion 22 that is positioned farther from the LED light source 40 than the first inner lens cut portion 11. The first outer lens cut portion 21 and the second outer lens cut portion 22 are separated from the first inner lens cut portion 11. The first outer lens cut portion 21 is positioned on the second direction A2 side of the first inner lens cut portion 11, and the second outer lens cut portion 22 is positioned on the opposite side of the second direction A2 from the first inner lens cut portion 11. Here, the position of the first inner lens cut portion 11 in the third direction A3, the position of the first outer lens cut portion 21 in the third direction A3, and the position of the second outer lens cut portion 22 in the third direction A3 are all equal to one another (see FIG. 4).

5, the distance L1 in the first direction A1 between the first inner lens cut portion 11 and the first outer lens cut portion 21 is longer than the distance L2 in the first direction A1 between the first inner lens cut portion 11 and the LED light source 40. As shown in FIG. 6, the distance L3 in the first direction A1 between the second inner lens cut portion 12 and the second outer lens cut portion 22 of the inner block 32 is longer than the distance L4 in the first direction A1 between the second inner lens cut portion 12 of the inner block 32 and the LED light source 40. The position of the first outer lens cut portion 21 in the first direction A1 and the position of the second outer lens cut portion 22 in the first direction A1 are equal. Therefore, the distance L3 in the first direction A1 between the second inner lens cut portion 12 of the inner block 32 and the first outer lens cut portion 21 is longer than the distance L4 in the first direction A1 between the second inner lens cut portion 12 of the inner block 32 and the LED light source 40. Similarly, the distance in the first direction A1 between the second inner lens cut portion 12 of the inner block 34 and the first outer lens cut portion 21 or the second outer lens cut portion 22 is longer than the distance in the first direction A1 between the second inner lens cut portion 12 of the inner block 34 and the LED light source 40.

In order to illuminate a wide area of the outer lens 20, it is preferable that the total area of the lens cut portions 15 is large. On the other hand, in order to ensure localized illuminance of the outer lens 20, it is preferable that the total area of the lens cut portions 15 is small. Figure 9 is a schematic diagram showing the inner blocks 31-36 and the outer blocks 37 and 38 when viewed along the optical axis K. As mentioned above, the inner blocks 31-36 and the outer blocks 37 and 38 are each composed of multiple lens cut portions 15. Figure 9 shows the arrangement of the lens cut portions 15 when viewed along the optical axis K. The distance between the optical axis K and the portion 15d of the lens cut portion 15 farthest from the optical axis K is defined as r. C is a circle with a radius of r and centered on the optical axis K. In this embodiment, when viewed along the optical axis K, the ratio of the total area of the lens cut portions 15 to the circle C with a radius of r and centered on the optical axis K is set to 20-40%.

2, the outer lens 20 has an upper wall 20A, a lower wall 20B, a left wall 20L, a right wall 20R, and a rear wall 20C. As shown in FIG. 6, the upper wall 20A is located above the inner lens 10 and extends in the longitudinal and transverse directions of the vehicle. The lower wall 20B is located below the inner lens 10 and extends in the longitudinal and transverse directions of the vehicle. As shown in FIG. 5, the left wall 20L is located to the left of the light guiding section 17 and outer block 37 of the inner lens 10 and extends in the longitudinal and transverse directions of the vehicle. The right wall 20R is located to the right of the light guiding section 17 and outer block 38 of the inner lens 10 and extends in the longitudinal and transverse directions of the vehicle. As shown in FIG. 6, the rear wall 20C is located behind the inner lens 10. The rear wall 20C extends in the left-right direction of the vehicle and, like the outer blocks 37 and 38 of the inner lens 10, extends in a direction inclined from the vertical so as to approach the third direction A3 as it approaches the first direction A1.

As described above, according to this embodiment, the inner lens 10 has multiple lens cut portions 15. Each lens cut portion 15 diffuses light, allowing the outer lens 20 to shine brightly. The multiple lens cut portions 15 include a first inner lens cut portion 11 and a first outer lens cut portion 21 that are separated from each other. To a person viewing the tail light 50 from behind the motorcycle 1, the first inner lens cut portion 11 is located at the back (in other words, the front side in the fore-and-aft direction of the vehicle), and the first outer lens cut portion 21 is located at the front side (in other words, the rear side in the fore-and-aft direction of the vehicle). The first inner lens cut portion 11 and the first outer lens cut portion 21 are separated front to back. Therefore, depending on the viewer, the inner lens 10 appears to glow in a three-dimensional manner. Therefore, even if the tail light 50 does not have a large number of LED light sources 40, a viewer may easily perceive the tail light 50 as large.

In this embodiment, the distance L1 in the first direction A1 between the first inner lens cut portion 11 and the first outer lens cut portion 21 is longer than the distance L2 in the first direction A1 between the first inner lens cut portion 11 and the LED light source 40 (see Figure 5). Because the distance between the first inner lens cut portion 11 and the first outer lens cut portion 21 is relatively long, the inner lens 10 appears to glow more three-dimensionally. Therefore, viewers tend to perceive the taillight 50 as larger.

Incidentally, the portion of the inner lens 10 that overlaps with the LED light source 40 when viewed along the optical axis K (in this embodiment, the first inner lens cut portion 11) and its surrounding area tend to be brighter than the portion farther from the LED light source 40 (see Figure 4). This raises concerns that the brightness of the outer lens 20 may become uneven in parts. However, according to this embodiment, the inner block 33, which is an example of a "first inner block," has a convex portion 14 arranged to the side of the optical axis K, and the convex portion 14 has inclined surfaces 14a and 14b that are inclined with respect to the optical axis K (see Figure 8). Because the inclined surfaces 14a and 14b diffuse light in a direction inclined from the optical axis K, the inner lens 10 can illuminate a wide area of the outer lens 20, thereby reducing uneven brightness of the inner lens 10.

According to this embodiment, the inner lens 10 has a second inner lens cut portion 12 that is spaced apart from the first inner lens cut portion 11 in the third direction A3 and in the direction opposite to the third direction A3 (see Figure 4). As a result, the inner lens 10 appears to glow more three-dimensionally depending on the viewer. Even if the tail light 50 does not have a large number of LED light sources 40, viewers are likely to perceive the tail light 50 as large.

According to this embodiment, in addition to inner block 33, inner lens 10 has inner blocks 32 and 34, which are examples of "second inner blocks" (see Figure 4). Therefore, depending on the viewer, inner lens 10 appears to glow more three-dimensionally. Even if tail light 50 does not have a large number of LED light sources 40, viewers are likely to perceive tail light 50 as large.

In this embodiment, inner blocks 32 and 34 are positioned closer to the first direction A1 than inner block 33 (see Figure 6). This makes the inner lens 10 appear to glow more three-dimensionally. Even if the tail light 50 does not have a large number of LED light sources 40, viewers are likely to perceive the tail light 50 as large.

According to this embodiment, the inner lens 10 has a first outer lens cut portion 21 arranged on the second direction A2 side of the first inner lens cut portion 11, as well as a second outer lens cut portion 22 arranged on the opposite side of the first inner lens cut portion 11 from the second direction A2 (see Figure 4). As a result, the inner lens 10 appears to glow more three-dimensionally depending on the viewer. Even if the tail light 50 does not have a large number of LED light sources 40, viewers are likely to perceive the tail light 50 as large.

According to this embodiment, the inner lens 10 has an outer block 37, which is an example of a "first outer block," and an outer block 38, which is an example of a "second outer block." The outer blocks 37 and 38 each extend in a direction inclined with respect to the third direction A3, and are spaced apart from each other in the second direction A2 (see Figure 4). Therefore, depending on the viewer, the inner lens 10 appears to glow more three-dimensionally. Even if the tail light 50 does not have a large number of LED light sources 40, viewers are likely to perceive the tail light 50 as large.

In this embodiment, the outer blocks 37 and 38 extend in the third direction A3 as they move in the first direction A1 (see Figure 6). This makes the inner lens 10 appear to glow more three-dimensionally. Even if the tail light 50 does not have a large number of LED light sources 40, viewers are likely to perceive the tail light 50 as large.

According to this embodiment, when viewed along the optical axis K, where r is the distance between the optical axis K and the portion 15d of the lens cut portion 15 that is farthest from the optical axis K, the ratio of the total area of the lens cut portion 15 to a circle C having a radius of r and centered on the optical axis K is 20 to 40% (see Figure 9). This makes it possible to illuminate a wide area of the outer lens 20 while maintaining localized brightness of the outer lens 20.

According to this embodiment, the tail light 50 is equipped with only one LED light source 40 as a light source. This allows for low costs for the tail light 50.

The above describes one embodiment of a vehicle lamp and a saddle-type vehicle. However, the above embodiment is merely an example, and various other embodiments are possible.

In the above embodiment, the outer blocks 37 and 38 extend in a direction inclined with respect to the third direction A3 (see Figure 4), but the outer blocks 37 and 38 may also extend in the third direction A3.

In the above embodiment, the taillight 50 is equipped with only one LED light source 40 as a light source, but the taillight 50 may be equipped with two or more LED light sources 40.

The vehicle lamp is not limited to the tail light 50. The vehicle lamp may be a lamp other than the tail light 50.

A saddle-ride vehicle is a vehicle on which a rider sits astride. Saddle-ride vehicles are not limited to motorcycles 1. Saddle-ride vehicles may also be, for example, tricycles, ATVs (All Terrain vehicles), or snowmobiles.

1. Motorcycles (saddle-type vehicles)
REFERENCE SIGNS LIST 10 Inner lens 11 First inner lens cut portion 12 Second inner lens cut portion 14a, 14b Inclined surface 15 Lens cut portion 16, 17 Light guide portion 20 Outer lens 21 First outer lens cut portion 22 Second outer lens cut portion 32, 34 Inner block (second inner block)
33 Inner block (first inner block)
37 Outer block (first outer block)
38 Outer block (second outer block)
40 LED light source 50 Tail light (vehicle lighting fixture)
A1 First direction A2 Second direction A3 Third direction K Optical axis

Claims (15)

an LED light source that emits light along an optical axis extending in a first direction;
The outer lens and
an inner lens that guides light from the LED light source to the outer lens,
The inner lens has a light guide portion and a plurality of lens cut portions each consisting of a concave portion or a convex portion and diffusing light that has passed through the light guide portion,
The vehicle lighting fixture, wherein the plurality of lens cut portions include a first inner lens cut portion arranged at a position overlapping with the LED light source when viewed along the optical axis, and a first outer lens cut portion arranged at a position farther from the LED light source than the first inner lens cut portion and separated from the first inner lens cut portion. The vehicle lamp according to claim 1, wherein the distance in the first direction between the first inner lens cut portion and the first outer lens cut portion is longer than the distance in the first direction between the first inner lens cut portion and the LED light source. The inner lens has a first inner block in which a plurality of lens cut portions including the first inner lens cut portion are continuously arranged,
The vehicle lamp according to claim 1 , wherein the first inner block is disposed laterally of the optical axis and has an inclined surface inclined with respect to the optical axis. The inner lens includes one or more second inner lens cut portions spaced apart from the first inner lens cut portion in a direction perpendicular to the first direction,
2. The vehicle lamp according to claim 1, wherein the distance in the first direction between the second inner lens cut portion and the first outer lens cut portion is longer than the distance in the first direction between the second inner lens cut portion and the LED light source. The inner lens has a first inner block in which a plurality of lens cut portions including the first inner lens cut portion are continuously arranged, and one or more second inner blocks in which a plurality of lens cut portions including the second inner lens cut portion are continuously arranged,
the first inner block and the second inner block extend in a second direction perpendicular to the first direction,
The vehicular lamp according to claim 4 , wherein the first inner block and the second inner block are spaced apart from each other in a third direction perpendicular to the first direction and the second direction. The vehicle lamp according to claim 5, wherein the second inner block is positioned closer to the first direction than the first inner block. the inner lens includes a second outer lens cut portion disposed at a position farther from the LED light source than the first inner lens cut portion and separated from the first inner lens cut portion,
the first outer lens cut portion is disposed on a second direction side perpendicular to the first direction with respect to the first inner lens cut portion,
The vehicular lamp according to claim 1 , wherein the second outer lens cut portion is disposed on an opposite side of the first inner lens cut portion in the second direction. the inner lens has a first outer block in which a plurality of lens cut portions including the first outer lens cut portion are continuously arranged, and a second outer block in which a plurality of lens cut portions including the second outer lens cut portion are continuously arranged,
the first outer block and the second outer block extend in a third direction perpendicular to the first direction and the second direction or in a direction inclined with respect to the third direction,
The vehicular lamp according to claim 7 , wherein the first outer block and the second outer block are spaced apart from each other in the second direction. The vehicle lamp according to claim 8, wherein the first outer block and the second outer block extend in the third direction as they extend in the first direction. the plurality of lens cut portions are arranged at a position farther from the LED light source than the first inner lens cut portion and include a second outer lens cut portion separated from the first inner lens cut portion,
the inner lens has a first outer block in which a plurality of lens cut portions including the first outer lens cut portion are continuously arranged, and a second outer block in which a plurality of lens cut portions including the second outer lens cut portion are continuously arranged,
the first outer block and the second outer block extend in a third direction perpendicular to the first direction and the second direction or in a direction inclined with respect to the third direction,
the first outer block and the second outer block are spaced apart from each other in the second direction,
5. The vehicle lamp according to claim 4, wherein the first inner block and the second inner block are disposed between the first outer block and the second outer block when viewed along the optical axis. The vehicle lamp according to claim 1, wherein, when viewed along the optical axis, the ratio of the total area of the plurality of lens cut portions to a circle having a radius of r and centered on the optical axis, where r is the distance between the optical axis and the portion of the plurality of lens cut portions farthest from the optical axis, is 20 to 40%. The vehicle lamp according to claim 1, comprising only a single LED light source as a light source. A saddle-type vehicle equipped with the vehicle lamp according to any one of claims 1 to 12. The car body and
a tail light disposed at the rear of the vehicle body,
The tail light comprises a vehicle lamp according to claim 5, 6, 8, 9, or 10,
In a saddle-type vehicle, the first direction, the second direction, and the third direction are respectively rearward in a vehicle longitudinal direction, leftward in a vehicle lateral direction, and upward in a vehicle vertical direction. The car body and
a tail light disposed at the rear of the vehicle body,
The taillight comprises the vehicle lamp according to claim 10,
the first direction, the second direction, and the third direction are respectively rearward in a vehicle longitudinal direction, leftward in a vehicle lateral direction, and upward in a vehicle vertical direction;
the first inner block and the second inner block are formed such that, when viewed from the rear of the vehicle, the inner block positioned higher has a larger dimension in the left-right direction of the vehicle;
In a saddle-type vehicle, the first outer block and the second outer block extend outward in a vehicle width direction as they go upward when viewed from the rear of the vehicle.