JP7235387B2 - fog lamp unit - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fog lamp unit, and more particularly to a fog lamp unit capable of forming light distribution patterns for fog lamps of different colors in the same area, capable of being miniaturized, and having a monocular appearance.

Conventionally, there has been known a fog lamp unit that includes an inner lens and a light source that is provided behind the inner lens and emits light that passes through the inner lens and is emitted forward to form a light distribution pattern for a fog lamp. (See, for example, Patent Document 1 (FIGS. 3, 4, etc.)).

In response to this, the present inventors have studied a fog lamp unit capable of forming fog lamp light distribution patterns of different colors by using two light sources of different colors and switching the light source to be lit.

JP 2015-217760 A

However, in the fog lamp unit described in Patent Document 1, as two light sources of different colors, for example, when a first light source emitting white light and a second light source emitting yellow light are used, the inner lens (focus) Due to the difference in the position of the first light source and the position of the second light source with respect to the The yellow second fog lamp light distribution pattern is formed in a different region, and as a result, there is a problem that the feeling of light distribution is deteriorated.

In addition, a fog lamp unit is configured for each emission color, such as a first fog lamp unit for a white first fog lamp light distribution pattern, and a second fog lamp unit for a yellow second fog lamp light distribution pattern. It is conceivable to form a light distribution pattern for fog lamps, but if this is done, there are problems such as an increase in the installation space of the fog lamp unit and an appearance of a compound eye.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a fog lamp unit that can form fog lamp light distribution patterns of different colors in the same area, can be miniaturized, and has a monocular appearance. intended to

In order to achieve the above object, one aspect of the present invention is an inner lens that includes a front surface and a rear surface opposite to the front surface; a light source that emits light forming a light distribution pattern for fog lamps, wherein the light sources include a first light source and a second light source emitting light of a first color, and a light emitting color of a second color. wherein the first light source and the second light source are arranged at diagonal positions on one side of the rectangle when viewed from the front, and the third light source and the fourth light source are arranged on the other side of the rectangle The rear surface of the inner lens includes a first light incident surface, a second light incident surface, and a second light incident surface facing the first light source, the second light source, the third light source, and the fourth light source, respectively. Including three light incident surfaces and a fourth light incident surface, the surface shape of the first light incident surface is such that light enters the inner lens from the first light incident surface and is emitted from the front surface to be emitted forward. light from the first light source forms a first partial light distribution pattern constituting a light distribution pattern for the first fog lamp of the first color in a predetermined area, and the surface shape of the second light incident surface light from the second light source, which enters the inner lens from the second light incident surface and is emitted from the front surface and radiated forward, is applied to the predetermined area for the first fog lamp of the first color. The surface shape of the third light incident surface is such that light enters the inner lens from the third light incident surface and exits from the front surface. and the light from the third light source projected forward forms a third partial light distribution pattern constituting the light distribution pattern for the second fog lamp of the second color in the predetermined area, and The surface shape of the fourth light incident surface is such that light from the fourth light source that enters the inner lens from the fourth light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. It is characterized in that it is configured to form a fourth partial light distribution pattern that constitutes a second fog lamp light distribution pattern of the second color.

According to this aspect, it is possible to form fog lamp light distribution patterns of different colors in the same area, and to provide a fog lamp unit that can be miniaturized and has a monocular appearance.

The light distribution patterns for fog lamps of different colors can be formed in the same area by the first light source and the second light source emitting the first color, and the third light source and the fourth light source emitting the second color. , and the first to fourth light incident surfaces for controlling the light from the first to fourth light sources, respectively.

Instead of constructing a fog lamp unit for each emission color, one fog lamp unit can be made smaller by using one inner lens, a first light source and a second light source that emit light of the first color, and This is due to the provision of the third light source and the fourth light source of the second color.

The single-lens appearance is achieved by providing the first to fourth light incident surfaces for controlling the light from the first to fourth light sources, respectively, on the rear surface of the inner lens instead of the front surface.

Further, according to this aspect, even when the first light source and the second light source are simultaneously turned on (the third light source and the fourth light source are turned off), when the third light source and the fourth light source are simultaneously turned on (the first light source and the fourth light source are turned off). Even when the two light sources are turned off), the entire inner lens emits light, so the monocular appearance can be achieved.

The reason why the entire inner lens emits light when the first light source and the second light source are simultaneously lit (or when the third light source and the fourth light source are simultaneously lit) is that the first light source and the second light source emitting the first color emit light. This is because they are arranged at one diagonal position of the rectangle, and the third light source and the fourth light source emitting light of the second color are arranged at the other diagonal position of the rectangle.

In the above invention, a preferred aspect is characterized in that the horizontal cross-sectional shape of the front surface of the inner lens is a straight line.

In a preferred aspect of the above invention, the front surface of the inner lens includes an upper cylindrical surface facing the first light incident surface and the fourth light incident surface, the second light incident surface and the third light incident surface. and a lower cylindrical surface facing the light surface, wherein each of the upper cylindrical surface and the lower cylindrical surface is a cylindrical surface having a cylinder axis extending in a horizontal direction.

According to this aspect, the surface shape of the first to fourth light incident surfaces is a shape in which the incident angle of the light from the first to fourth light sources is relatively small, that is, the Fresnel loss is small and the light from the first to fourth light sources light can easily enter the inner lens.

This is because not only the first to fourth light incident surfaces but also the cylindrical surfaces are in charge of condensing the light from the first to fourth light sources in the vertical direction.

Further, in the above invention, a preferable aspect is that the surface shape of the first light incident surface is such that light enters the inner lens from the first light incident surface and is emitted from the upper cylindrical surface to illuminate forward. The light from the first light source is configured to form the first partial light distribution pattern in the predetermined area, and the shape of the second light incident surface is such that it enters the inner lens from the second light incident surface. The light from the second light source emitted from the lower cylindrical surface and emitted forward forms the second partial light distribution pattern in the predetermined area, and the third light incident surface light from the third light source enters the inner lens from the third light incident surface, emits light from the lower cylindrical surface, and illuminates forward, and the light from the third light source enters the predetermined area in the third part. It is configured to form a light distribution pattern, and the surface shape of the fourth light incident surface is such that light enters the inner lens from the fourth light incident surface and is emitted from the upper cylindrical surface to be emitted forward. The light from the fourth light source is configured to form the fourth partial light distribution pattern in the predetermined area.

Further, in the above invention, preferably, the first light source, the third light source, and the first light entrance surface and the third light entrance surface are arranged in the vehicle width direction when the fog lamp unit is attached to the vehicle. Regarding, it is arranged far from the vehicle center, the second light source and the fourth light source, and the second light entrance surface and the fourth light entrance surface are arranged in the vehicle width direction when the fog lamp unit is attached to the vehicle It is characterized by being arranged close to the center of the vehicle.

In the above invention, a preferable aspect is that the surface shape of the first light incident surface is such that light enters the inner lens from the first light incident surface and is emitted from the front surface and emitted from the first light source is The fourth light incident surface side adjacent to the first light incident surface is irradiated to form the first partial light distribution pattern, and the surface shape of the second light incident surface is the second light incident surface. The light from the second light source that enters the inner lens from the light incident surface and exits from the front surface is irradiated to the third light incident surface side adjacent to the second light incident surface, and the second light incident surface is irradiated with the light from the second light source. The surface shape of the third light incident surface is configured to form a partial light distribution pattern, and the surface shape of the third light incident surface is such that light from the third light source enters the inner lens from the third light incident surface and exits from the front surface. is configured to irradiate the second light incident surface side adjacent to the third light incident surface to form the third partial light distribution pattern, and the surface shape of the fourth light incident surface is the Light from the fourth light source that enters the inner lens through a fourth light incident surface and emerges from the front surface is irradiated onto the first light incident surface side adjacent to the fourth light incident surface, It is characterized by being configured to form a fourth partial light distribution pattern.

According to this aspect, when the first light source and the second light source are turned on simultaneously, the light from the first light source and the light from the second light source emitted from the front surface of the inner lens cross each other when viewed from above. Similarly, when the third light source and the fourth light source are turned on simultaneously, the light from the third light source and the light from the fourth light source emitted from the front surface of the inner lens cross each other when viewed from above.

As a result, even when a structure such as an extension is arranged in front of the fog lamp unit, the light from the first light source and the light from the second light source emitted from the front surface of the inner lens, and the light from the third light source It is possible to suppress the light from the fourth light source and the light from the fourth light source from being blocked by the structure.

In the above invention, a preferred aspect is that the first partial light distribution pattern has a shorter dimension in the left-right direction, a higher luminous intensity, and is formed closer to a vertical line than the second partial light distribution pattern, The third partial light distribution pattern is shorter in the horizontal direction, has a higher luminous intensity, and is formed closer to the vertical line than the fourth partial light distribution pattern.

According to this aspect, it is possible to form a first fog lamp light distribution pattern of a first color suitable for a fog lamp, which has a relatively high central luminous intensity and is wide in the left-right direction.

Compared to the second partial light distribution pattern, the dimension in the horizontal direction is shorter, the luminous intensity is higher, and the first partial light distribution pattern is formed closer to the vertical line. This is because the first fog lamp light distribution pattern is formed by superimposing the second partial light distribution pattern, which is long in the horizontal direction, has a low luminous intensity, and is formed far from the vertical line. be.

Similarly, it is possible to form a second fog lamp light distribution pattern of a second color suitable for fog lamps, which has a relatively high center luminous intensity and is wide in the horizontal direction.

Compared to the fourth partial light distribution pattern, the third partial light distribution pattern has a shorter dimension in the horizontal direction, a higher luminous intensity, and is formed closer to the vertical line. This is due to the formation of the second fog lamp light distribution pattern by being superimposed on the fourth partial light distribution pattern, which is long in the horizontal direction, has low luminous intensity, and is formed far from the vertical line. be.

In the above invention, preferably, the first partial light distribution pattern and the third partial light distribution pattern are formed in the same area in the predetermined area with the same size, the same shape, and the same luminous intensity distribution. , wherein the second partial light distribution pattern and the fourth partial light distribution pattern are formed in the same area in the predetermined area with the same size, the same shape, and the same luminous intensity distribution.

According to this aspect, the first fog lamp light distribution pattern formed by superimposing the first partial light distribution pattern and the second partial light distribution pattern, and the third partial light distribution pattern and the fourth partial light distribution pattern are formed. The second fog lamp light distribution patterns formed by superimposing the patterns can be formed in predetermined areas with the same size, the same shape, and the same luminous intensity distribution.

Further, in the above invention, in a preferred aspect, at least a part of a region where light from the first light source is emitted and a region where light from the fourth light source is emitted in the front surface of the inner lens overlap, At least a part of a region where light from the second light source is emitted and a region where light from the third light source is emitted on the front surface of the inner lens overlap each other.

According to this aspect, it is possible to reduce the size of the inner lens and thus the size of the fog lamp unit.

This is because at least a part of the area where the light from the first light source and the area where the light from the fourth light source are emitted overlaps on the front surface of the inner lens, and the second light source on the front surface of the inner lens. This is because at least a part of the region from which the light from the third light source is emitted overlaps with the region from which the light from the third light source is emitted.

Therefore, the area of the front surface of the inner lens from which the light from the first light source is emitted does not overlap with the area from which the light from the fourth light source is emitted, and the area of the front surface of the inner lens from which the light from the second light source is emitted does not overlap. Compared to the case where the light emitting region and the light emitting region from the third light source do not overlap, it is possible to reduce the size of the inner lens and thus the size of the fog lamp unit.

Further, in the above invention, in a preferred mode, the first light incident surface is configured as a curved surface that is convex toward the first light source, and the second light incident surface is configured as a curved surface that is convex toward the second light source. , wherein the third light incident surface is configured as a curved surface convex toward the third light source, and the fourth light incident surface is configured as a curved surface convex toward the fourth light source characterized by

Another aspect of the present invention is an inner lens that includes a front surface and a rear surface opposite to the front surface, and is provided behind the inner lens to form a light distribution pattern for a fog lamp by transmitting light forward through the inner lens. a light source that emits light that emits light, wherein the light source includes a first light source emitting light of a first color and a second light source emitting light of a second color, and the rear surface of the inner lens comprises: The first light source and the second light source each include a first light incident surface and a second light incident surface facing each other, and the surface shape of the first light incident surface is such that light enters the inner lens from the first light incident surface. and the light from the first light source emitted from the front surface and emitted forward forms the light distribution pattern for the first fog lamp of the first color in a predetermined area, and the second incident light The surface shape of the surface is such that the light from the second light source that enters the inner lens from the second light incident surface and is emitted from the front surface and radiated forward is projected onto the predetermined area in the second color. It is characterized in that it is configured to form a second fog lamp light distribution pattern.

According to this aspect, it is possible to form fog lamp light distribution patterns of different colors in the same area, and to provide a fog lamp unit that can be miniaturized and has a monocular appearance.

The light distribution patterns for fog lamps of different colors can be formed in the same area by using the first light source emitting light of the first color, the second light source emitting light of the second color, and the first and second light sources. This is due to the provision of the first and second light incident surfaces that control the respective lights from the light source.

Instead of constructing a fog lamp unit for each emission color, one fog lamp unit can be made smaller by using one inner lens, a first light source emitting light of the first color, and a second light source emitting light of a second color. This is due to the provision of a light source.

The single-lens appearance is achieved by providing the first and second light incident surfaces for controlling the light from the first and second light sources on the rear surface of the inner lens instead of the front surface.

Another aspect of the present invention is an inner lens that includes a front surface and a rear surface opposite to the front surface, and is provided behind the inner lens to form a light distribution pattern for a fog lamp by transmitting light forward through the inner lens. and a light source that emits light of a first color, wherein the light source includes N1 (N1 is an integer equal to or greater than 2) first light sources of a first color and N2 of a second color (N1 is an integer of 2 or more). N2 is an integer of 2 or more) second light sources, and the rear surface of the inner lens includes N1 first light incident surfaces and N1 first light incident surfaces facing the N1 first light sources and the N2 second light sources, respectively. N2 second light incident surfaces are included, and the surface shapes of the N1 first light incident surfaces are such that light enters the inner lens from the first light incident surfaces, exits from the front surface, and travels forward. The light emitted from the first light source is configured to form a partial light distribution pattern constituting the light distribution pattern for the first fog lamp of the first color in a predetermined area, and the N2 second incident light beams The surface shape of each surface is such that the light from the second light source that enters the inner lens from the second light incident surface, is emitted from the front surface, and is irradiated forward is projected onto the predetermined area from the second light source. It is characterized in that it is configured to form a partial light distribution pattern that constitutes the light distribution pattern for the color second fog lamp.

According to this aspect, it is possible to form fog lamp light distribution patterns of different colors in the same area, and to provide a fog lamp unit that can be miniaturized and has a monocular appearance.

The light distribution patterns for fog lamps of different colors can be formed in the same area by N1 first light sources emitting light of the first color and N2 second light sources emitting light of the second color. , N1 first light incident surfaces and N2 second light incident surfaces for controlling light from N1 first light sources and N2 second light sources, respectively.

It is possible to reduce the size by constructing a fog lamp unit for each luminescent color, but one fog lamp unit is composed of one inner lens, N1 first light sources of the first color, and the first light source of the first color. This is due to the provision of N2 second light sources of two colors.

The appearance of a monocular is achieved by placing N1 first light-incident surfaces and N2 second light-incident surfaces for controlling light from N1 first light sources and N2 second light sources, respectively, on the front surface of the inner lens. This is due to the fact that it is provided on the rear surface rather than on the rear side.

2 is a front view of the fog lamp unit 10; FIG. FIG. 2 is a cross-sectional view of the fog lamp unit 10 shown in FIG. 1 taken along the line AA. FIG. 2 is a cross-sectional view taken along line BB of the fog lamp unit 10 shown in FIG. 1; It is an example of a white first fog lamp light distribution pattern P1 and the like. It is an example of a yellow second fog lamp light distribution pattern P2 and the like. (a) Graph representing the luminous intensity distribution of the first fog lamp light distribution pattern P1, (b) Graph representing the luminous intensity distribution of the first partial light distribution pattern P1a, (c) Graph representing the luminous intensity distribution of the second partial light distribution pattern P1b graph. 3A is a front view of the inner lens 20, and FIG. 3B is a rear view of the inner lens 20. FIG. It is an example of an optical path followed by light Ray1 and the like from the first light source 31 in a vertical cross section. It is an example of an optical path followed by light Ray1 from the first light source 31 in a horizontal cross section. It is an example of an optical path followed by light Ray4 from the fourth light source 34 in a horizontal cross section. FIG. 3 is a diagram showing a state where a region where light Ray1 from a first light source 31 is emitted and a region where light Ray4 from a fourth light source 34 is emitted overlap on a front surface 20a of an inner lens 20; It is a modification of arrangement of each light source.

A fog lamp unit 10 according to one embodiment of the present invention will be described below with reference to the accompanying drawings. The same reference numerals are given to corresponding components in each figure, and duplicate descriptions are omitted.

FIG. 1 is a front view of the fog lamp unit 10. FIG. 2 is a sectional view taken along line AA of the fog lamp unit 10 shown in FIG. 1, and FIG. 3 is a sectional view taken along line BB.

The fog lamp unit 10 shown in FIGS. 1 to 3 is a direct projection (also referred to as direct projection) fog lamp unit capable of forming fog lamp light distribution patterns of different colors in the same area. For example, the user operates a changeover switch (not shown) provided in the passenger compartment to switch the light source to be lit, thereby switching to the light distribution pattern for the white first fog lamp or the yellow light distribution pattern for the second fog lamp. be able to.

The fog lamp units 10 are mounted on the left and right sides of a front end portion (for example, a bumper) of a vehicle such as an automobile. Since the fog lamp units 10 mounted on both left and right sides have a symmetrical configuration, the fog lamp unit 10 mounted on the right side of the front end of the vehicle (the right side when viewed from the front of the vehicle) will be described below as a representative.

First, the white first fog lamp light distribution pattern P1 and the yellow second fog lamp light distribution pattern P2 formed by the fog lamp unit 10 will be described.

FIG. 4 shows an example of a white first fog lamp light distribution pattern P1 and the like. FIG. 4 shows a first fog lamp light distribution pattern P1 and the like formed on a virtual vertical screen facing the front of the vehicle (located approximately 25 m ahead of the front of the vehicle).

By superimposing the white first partial light distribution pattern P1a shown in FIG. 4B and the white second partial light distribution pattern P1b shown in FIG. A fog lamp light distribution pattern P1 is formed.

The first partial light distribution pattern P1a has a shorter horizontal dimension, a higher luminous intensity, and is formed closer to the vertical line V than the second partial light distribution pattern P1b. Conversely, the second partial light distribution pattern P1b is longer in the horizontal direction, has a lower luminous intensity, and is formed farther from the vertical line V than the first partial light distribution pattern P1a.

FIG. 5 shows an example of a yellow second fog lamp light distribution pattern P2 and the like. FIG. 5 shows a second fog lamp light distribution pattern P2 and the like formed on a virtual vertical screen facing the front of the vehicle.

By superimposing the yellow third partial light distribution pattern P2a shown in FIG. 5B and the yellow fourth partial light distribution pattern P2b shown in FIG. A fog lamp light distribution pattern P2 is formed.

The third partial light distribution pattern P2a is shorter in the horizontal direction, has a higher luminous intensity, and is formed closer to the vertical line V than the fourth partial light distribution pattern P2b. Conversely, the fourth partial light distribution pattern P2b is longer in the horizontal direction, has a lower luminous intensity, and is formed farther from the vertical line V than the third partial light distribution pattern P2a.

The first partial light distribution pattern P1a and the third partial light distribution pattern P2a are formed in the same region in the predetermined region (the region in which the first fog lamp light distribution pattern P1 is formed; see FIG. 4A). They are formed with the same size, the same shape, and the same luminous intensity distribution (see FIG. 6(b)).

Similarly, the second partial light distribution pattern P1b and the fourth partial light distribution pattern P2b are formed in the same pattern in the predetermined area (the area where the second fog lamp light distribution pattern P2 is formed; see FIG. 5A). The regions are formed with the same size, the same shape, and the same luminous intensity distribution (see FIG. 6(c)).

As a result, the first fog lamp light distribution pattern P1 formed by superimposing the first partial light distribution pattern P1a and the second partial light distribution pattern P1b is the same as shown in FIG. They are formed in an area (corresponding to a predetermined area in the present invention) with the same size, same shape, and same luminous intensity distribution. Similarly, the second fog lamp light distribution pattern P2 formed by superimposing the third partial light distribution pattern P2a and the fourth partial light distribution pattern P2b has the same shape as shown in FIG. They are formed in an area (corresponding to a predetermined area in the present invention) with the same size, same shape, and same luminous intensity distribution.

Note that the term “same” as used herein is not limited to being the same in a strict sense. In other words, even if the area where each light distribution pattern is formed, the size, shape, and luminous intensity distribution of each light distribution pattern are different, as long as it can be visually evaluated as the same area, the same size, the same shape, and the same luminous intensity distribution, Identical.

FIG. 6A is a graph showing the luminous intensity distribution of the first fog lamp light distribution pattern P1. The luminous intensity distribution of the second fog lamp light distribution pattern P2 is also the same luminous intensity distribution as in FIG. 6(a).

FIG. 6B is a graph showing the luminous intensity distribution of the first partial light distribution pattern P1a. The luminous intensity distribution of the third partial light distribution pattern P2a is also the same luminous intensity distribution as in FIG. 6(b).

FIG. 6(c) is a graph showing the luminous intensity distribution of the second partial light distribution pattern P1b. The luminous intensity distribution of the fourth partial light distribution pattern P2b is also the same luminous intensity distribution as in FIG. 6(c).

Next, a configuration example of the fog lamp unit 10 forming each light distribution pattern will be described.

As shown in FIGS. 1 to 3, the fog lamp unit 10 of this embodiment includes an inner lens 20 including a front surface 20a and a rear surface 20b opposite to the front surface 20a. A light source 30 that emits light that is emitted forward and forms a light distribution pattern for fog lamps, a shade 40, an outer lens 50, and a housing 60. - 特許庁

The inner lens 20, the light source 30 and the shade 40 are arranged in a lamp chamber 70 constituted by the outer lens 50 and the housing 60, and attached to the housing 60 and the like. A member denoted by reference numeral 80 in FIGS. 2 and 3 is an extension. The extension 80 covers the peripheral edge of the fog lamp unit 10 and the like so that the peripheral edge of the fog lamp unit 10 (the joint between the outer lens 50 and the housing 60) and the like is not visible, and is attached to the front end portion (for example, bumper) of the vehicle. can be attached to

The light source 30 includes a first light source 31 and a second light source 32 emitting white light (corresponding to the first color of the present invention), and a third light source 33 emitting yellow light (corresponding to the second color of the present invention). and a fourth light source 34 .

As shown in FIG. 1, the first light source 31 and the second light source 32 are each arranged at one diagonal position of the rectangle B when viewed from the front. The third light source 33 and the fourth light source 34 are arranged at the other diagonal positions of the rectangle B when viewed from the front. It should be noted that the light sources 31 to 34 may be arranged near diagonal positions instead of strictly diagonal positions.

By arranging the first to fourth light sources 31 to 34 in this way, even when the first light source 31 and the second light source 32 are turned on simultaneously (the third light source 33 and the fourth light source 34 are turned off), Even when the 33 and the fourth light source 34 are turned on simultaneously (the first light source 31 and the second light source 32 are turned off), the entire inner lens 20 emits light (it can be visually recognized as emitting light).

Rectangle B is, for example, a square formed by two straight lines extending horizontally on the top and bottom and two straight lines on the left and right extending vertically when viewed from the front. The rectangle B is arranged within the outer shape (substantially circular) of the inner lens 20 when viewed from the front. The center of the rectangle B and the center of the outer shape of the inner lens 20 match.

As a result of arranging the first to fourth light sources 31 to 34 in this way, when the fog lamp unit 10 is mounted on the right side of the front end of the vehicle, the first light source 31 and the third light source 33 are placed far from the center of the vehicle. The same applies to the first light incident surface 21 and the third light incident surface 23, which will be described later. On the other hand, the second light source 32 and the fourth light source 34 are arranged near the center of the vehicle in the vehicle width direction when the fog lamp unit 10 is mounted on the right side of the front end portion of the vehicle. The same applies to the second light incident surface 22 and the fourth light incident surface 24, which will be described later.

Since the first light source 31 and the second light source 32 have the same configuration, the first light source 31 will be described below as a representative.

The first light source 31 is a semiconductor light-emitting element such as an LED having a rectangular light-emitting surface that emits white light. As shown in FIG. be. The substrate K is attached to the housing 60 or the like by screwing or the like.

The first light source 31 is, for example, an LED package containing two blue light emitting LED elements (1 mm square) arranged adjacent to each other in the horizontal direction and a yellow light emitting phosphor (1×2 mm) covering them. Although not shown, the outer shape of the phosphor and the outer shape of the two LED elements arranged adjacent to each other in the horizontal direction are substantially overlapped, so the luminance of the phosphor is It becomes almost uniform.

Therefore, the contrast ratio between the top and bottom of the lower edge (extending in the horizontal direction) of the first light source 31 (light emitting surface) is relatively large.

As a result, when forming the first partial light distribution pattern P1a constituting the first fog lamp light distribution pattern P1 by inversely projecting the light source image of the first light source 31, the upper end edge of the first partial light distribution pattern P1a The contrast ratio above and below (cutoff line CL1a) is also relatively large. That is, the cutoff line CL1a of the first partial light distribution pattern P1a becomes clear.

Similarly, when forming the second partial light distribution pattern P1b constituting the first fog lamp light distribution pattern P1 by inversely projecting the light source image of the second light source 32, the upper edge of the second partial light distribution pattern P1b The contrast ratio above and below (cutoff line CL1b) is also relatively large. That is, the cutoff line CL1b of the second partial light distribution pattern P1b becomes clear.

Since the third light source 33 and the fourth light source 34 have the same configuration, the third light source 34 will be described below as a representative.

The third light source 33 is a semiconductor light emitting element such as an LED having a rectangular light emitting surface that emits yellow light. As shown in FIG. 2, the third light source 33 is mounted on the substrate K with the light emitting surface facing forward. be.

The third light source 33 is, for example, an LED package containing two blue light emitting LED elements (1 mm square) arranged adjacent to each other in the horizontal direction and a yellow light emitting phosphor (1×2 mm) covering them. Although not shown, the outer shape of the phosphor is larger than the outer shape of two LED elements arranged adjacent to each other in the horizontal direction, and protrudes from the outer shape of the two LED elements. It decreases as it gets closer to the edge.

Therefore, the vertical contrast ratio of the lower edge (extending in the horizontal direction) of the third light source 33 (light emitting surface) is smaller than the vertical contrast ratio of the lower edge of the first light source 31 .

As a result, when forming the third partial light distribution pattern P2a constituting the second fog lamp light distribution pattern P2 by inversely projecting the light source image of the third light source 33, the upper edge of the third partial light distribution pattern P2a The contrast ratio above and below (cutoff line CL2a) is also relatively small. That is, the cutoff line CL2a of the third partial light distribution pattern P2a becomes unclear.

Similarly, when forming the fourth partial light distribution pattern P2b that constitutes the second fog lamp light distribution pattern P2 by inversely projecting the light source image of the fourth light source 34, the upper end edge of the fourth partial light distribution pattern P2b is formed. The contrast ratio above and below (cutoff line CL2b) is also relatively small. That is, the cutoff line CL2b of the fourth partial light distribution pattern P2b becomes unclear.

Therefore, in order to clarify the cutoff line CL2a of the third partial light distribution pattern P2a, a shade 40 is provided in front of the third light source 33 as shown in FIG. Similarly, in order to clarify the cutoff line CL2b of the fourth partial light distribution pattern P2b, a shade 40 is also provided in front of the fourth light source 34, although not shown.

The shade 40 includes a shade portion 40a (see FIG. 2) covering a region along the lower edge of the third light source 33 and a shade portion 40b (not shown) covering a region along the lower edge of the fourth light source 34. .

The shade 40 (shade portions 40a and 40b) covers the area along the lower edge of each of the third light source 33 and the fourth light source 34, so that the contrast ratio between the upper and lower edges of the lower edge of each of the third light source 33 and the fourth light source 34 is reduced. becomes relatively large. As a result, the cutoff lines CL2a and CL2b of the third partial light distribution pattern P2a and the fourth partial light distribution pattern P2b can be clarified.

Next, a specific example of the shade 40 will be described.

The shade 40 is, for example, a circular plate having substantially the same outer shape as the inner lens 20, and allows the light from the first to fourth light sources 31 to 34 to pass therethrough. Rectangular through-holes H1 to H4 are formed at locations where 34 face each other. Each of the rectangular through-holes H1 to H4 is composed of two straight lines extending horizontally (up and down) and two straight lines extending vertically (left and right) when viewed from the front.

Since the first light source 31 is entirely exposed through the through hole H1 (see FIG. 1), the light Ray1 from the first light source 31 is not blocked by the shade 40 as shown in FIG. through the through hole H1.

Similarly, since the second light source 32 is entirely exposed through the through-hole H2 (see FIG. 1), the light Ray2 from the second light source 32 is not blocked by the shade 40 (not shown). through the through hole H2.

Since the area of the third light source 33 other than the area along the lower edge (the area covered with the shade portion 40a) is exposed from the through hole H3 (see FIG. 2), as shown in FIG. The light Ray3 from 33 is partially blocked by the shade 40 (shade portion 40a) and passes through the through hole H3. In FIG. 4, the symbol Ray3a represents light that is partly blocked by the shade 40 (shade portion 40a) out of the light Ray3 from the third light source 33 .

Similarly, since the area of the fourth light source 34 other than the area along the lower edge (the area covered with the shade portion 40b) is exposed through the through hole H4, although not shown, the light Ray4 from the fourth light source 34 is partially shielded by the shade 40 (shade portion 40b) and passes through the through hole H4.

If light sources having a relatively large contrast ratio above and below the bottom edge, like the first light source 31 and the second light source 32, are used as the third light source 33 and the fourth light source 34, the shade 40 may be omitted. .

As shown in FIGS. 2 and 3, the inner lens 20 is held by a holding member 90 fixed to the housing 60 and arranged in front of the first to fourth light sources 31-34. The inner lens 20 is made of transparent resin such as acrylic or polycarbonate, and is molded by injection molding.

7A is a front view of the inner lens 20, and FIG. 7B is a rear view of the inner lens 20. FIG.

As shown in FIG. 7A, the outer shape of the inner lens 20 is generally circular. In addition, the outer shape of the inner lens 20 may be, for example, a rectangular shape other than a circular shape. Cutouts S<b>1 and S<b>2 into which a part of the holding member 90 is inserted are formed on both left and right sides of the inner lens 20 .

The front surface 20a of the inner lens 20 includes two vertically arranged cylindrical surfaces. That is, the front surface 20a of the inner lens 20 includes an upper cylindrical surface 20a1 and a lower cylindrical surface 20a2. Since the upper cylindrical surface 20a1 and the lower cylindrical surface 20a2 preferably have a symmetrical shape in order to obtain the same light distribution using each as an output surface, the curvature of the upper cylindrical surface 20a1 and the curvature of the lower cylindrical surface 20a2 are equal.

Each of the upper cylindrical surface 20a1 and the lower cylindrical surface 20a2 is configured as a cylindrical surface having a substantially cylindrical side surface shape with a cylindrical axis extending in the horizontal direction (horizontal direction in FIG. 7A).

FIG. 11 is a diagram showing how the area where the light Ray1 from the first light source 31 is emitted and the area where the light Ray4 from the fourth light source 34 is emitted in the front surface 20a of the inner lens 20 overlap each other.

As shown in FIG. 11, the area of the front surface 20a of the inner lens 20 where the light Ray1 from the first light source 31 is emitted and the area where the light Ray4 from the fourth light source 34 is emitted are at least partially overlapped. there is Similarly, although not shown, the area of the front surface 20a of the inner lens 20 where the light Ray3 from the third light source 33 is emitted and the area where the light Ray2 from the second light source 32 is emitted are at least partially overlapped. there is

As a result, the area of the front surface 20a of the inner lens 20 from which the light Ray1 from the first light source 31 is emitted does not overlap with the area from which the light Ray4 from the fourth light source 34 is emitted. Compared to the case where the region where the light Ray3 from the third light source 33 is emitted and the region where the light Ray2 from the second light source 32 is emitted do not overlap, the size of the inner lens 20 is reduced, and the fog lamp unit 10 is reduced. Miniaturization is possible.

As shown in FIG. 7B, the rear surface 20b of the inner lens 20 includes first to fourth light incident surfaces 21 to 24 facing the first to fourth light sources 31 to 34, respectively. Each light incident surface is configured as a curved surface that is convex toward the facing light source, and a dividing line is formed between adjacent light incident surfaces. That is, the first to fourth light incident surfaces 21 to 24 are individually provided on the rear surface 20b of the inner lens 20, and are not formed as a common area.

Next, the first light incident surface 21 will be described.

The first light incident surface 21 is a surface through which the light Ray1 from the first light source 31 enters the inner lens 20 . Light Ray1 from the first light source 31 entering the inner lens 20 through the first light incident surface 21 is emitted from the upper cylindrical surface 20a1.

FIG. 8 is an example of an optical path followed by light Ray1 and the like from the first light source 31 in a vertical section. FIG. 9 shows an example of the optical path followed by the light Ray1 from the first light source 31 in a horizontal section.

A lens portion 201 (see FIGS. 1, 2, and 3) between the first light incident surface 21 and the upper cylindrical surface 20a1 functions as a projection lens. The focal point F1 (reference point for optical design) of this lens portion 201 is positioned near the lower edge of the first light source 31 (see FIG. 2). Hereinafter, the reference axis passing through the focal point F1 and extending in the longitudinal direction of the vehicle will be referred to as a reference axis AX1 (see FIG. 2).

As shown in FIGS. 2 and 3 , the first light incident surface 21 is configured as a convex curved surface facing the first light source 31 .

The surface shape of the first light incident surface 21 is such that light Ray1 (see FIG. 9) from the first light source 31 that enters the inner lens 20 from the first light incident surface 21 and emerges from the upper cylindrical surface 20a1 is the main component. is irradiated (diffused) from the first light incident surface 21 to the laterally adjacent fourth light incident surface 24 side, forming a first partial light distribution pattern P1a shown in FIG. 4B in a predetermined area. configured as

Specifically, as shown in FIG. 9, the horizontal cross-sectional shape of the first light incident surface 21 is such that the light Ray1 from the first light source 31 emitted from the upper cylindrical surface 20a1 and emitted forward is horizontal, for example, , to the left angle .theta.1L range and right angle .theta.1R range with respect to the reference axis AX1. The left angle θ1L is greater than the right angle θ1R.

As shown in FIG. 8, the vertical cross-sectional shape of the first light incident surface 21 is such that the light Ray1 emitted from the upper cylindrical surface 20a1 and emitted forward from the first light source 31 is condensed in the vertical direction. It is configured to irradiate in a downward direction at a predetermined angle with respect to the horizontal plane.

As a result of controlling the light Ray1 from the first light source 31 by the first light incident surface 21 as described above, a second partial light distribution pattern P1b (see FIG. 4C) is obtained as shown in FIG. , a first partial light distribution pattern P1a which is shorter in the horizontal direction, has a higher luminous intensity (see FIG. 6B), and is formed closer to the vertical line V than the first partial light distribution pattern P1a.

Next, the second light incident surface 22 is described.

The second light incident surface 22 is a surface through which the light Ray2 from the second light source 32 enters the inner lens 20 . Light Ray2 from the second light source 32 that has entered the inner lens 20 through the second light incident surface 22 is emitted from the lower cylindrical surface 20a2. The optical path followed by the light Ray2 from the second light source 32 substantially coincides with the optical path followed by the light Ray4 from the fourth light source 34 shown in FIG. 10 in top view, and the light from the third light source 33 shown in FIG. It roughly matches the optical path followed by Ray3.

A lens portion 202 (see FIG. 1) between the second light incident surface 22 and the lower cylindrical surface 20a2 functions as a projection lens. The focal point F2 (reference point for optical design) of the lens portion 202 is located near the lower edge of the second light source 32, although not shown. Hereinafter, the reference axis passing through the focal point F2 and extending in the longitudinal direction of the vehicle will be referred to as a reference axis AX2. The reference axis AX2 substantially coincides with the reference axis AX4 shown in FIG. 10 when viewed from above, and substantially coincides with the reference axis AX3 shown in FIG. 8 when viewed from the side.

The second light incident surface 22 is configured as a convex curved surface facing the second light source 32 .

The surface shape of the second light incident surface 22 is such that light Ray2 (see FIG. 10) from the second light source 32 that enters the inner lens 20 from the second light incident surface 22 and exits from the lower cylindrical surface 20a2 is mainly emitted. is irradiated (diffused) from the second light incident surface 22 to the side of the third light incident surface 23 adjacent in the left-right direction, forming a second partial light distribution pattern P1b shown in FIG. 4(c) in a predetermined area. configured as

Specifically, the horizontal cross-sectional shape of the second light incident surface 22 is the same horizontal cross-sectional shape as the fourth light incident surface 24 shown in FIG. Light Ray2 (see FIG. 10) from the light source 32 is configured, for example, to diffuse in a left angle θ2L range and right angle θ2R range with respect to the reference axis AX2. The left angle θ2L is smaller than the right angle θ2R.

The vertical cross-sectional shape of the second light incident surface 22 is the same vertical cross-sectional shape as the third light incident surface 23 shown in FIG. light Ray2 (see FIG. 8) is condensed in the vertical direction and projected downward at a predetermined angle with respect to the horizontal plane.

As a result of controlling the light Ray2 from the second light source 32 by the second light incident surface 22 as described above, the first partial light distribution pattern P1a (see FIG. 4B) is obtained as shown in FIG. 4C. A second partial light distribution pattern P1b that is shorter in the horizontal direction, has a lower luminous intensity (see FIG. 6C), and extends farther from the vertical line V than the second partial light distribution pattern P1b is formed.

Next, the third light incident surface 23 will be described.

The third light incident surface 23 is a surface through which the light Ray3 from the third light source 33 enters the inner lens 20 . Light Ray3 from the third light source 33 entering the inner lens 20 through the third light incident surface 23 exits from the lower cylindrical surface 20a2. The optical path followed by the light Ray3 from the third light source 33 substantially matches the optical path followed by the light Ray1 from the first light source 31 shown in FIG. 9 in top view.

A lens portion 203 (see FIGS. 1 and 2) between the third light incident surface 23 and the lower cylindrical surface 20a2 functions as a projection lens. The focal point F3 (reference point for optical design) of this lens portion 203 is located near the lower edge of the third light source 33 (see FIG. 2). Hereinafter, the reference axis passing through the focal point F3 and extending in the longitudinal direction of the vehicle will be referred to as a reference axis AX3 (see FIG. 2). The reference axis AX3 substantially coincides with the reference axis AX1 shown in FIG. 9 when viewed from above.

As shown in FIG. 2 , the third light incident surface 23 is configured as a convex curved surface facing the third light source 33 .

The surface shape of the third light incident surface 23 is such that light Ray3 (see FIG. 9) from the third light source 33 that enters the inner lens 20 from the third light incident surface 23 and exits from the lower cylindrical surface 20a2 is mainly emitted. is irradiated (diffused) from the third light incident surface 23 to the side of the second light incident surface 22 adjacent in the left-right direction, forming a third partial light distribution pattern P2a shown in FIG. 5(b) in a predetermined area. configured as

Specifically, the horizontal cross-sectional shape of the third light incident surface 23 is the same horizontal cross-sectional shape as the first light incident surface 21 shown in FIG. The light Ray3 (see FIG. 9) from the light source 33 is configured to diffuse in the horizontal direction, for example, in the left angle θ1L range and the right angle θ1R range with respect to the reference axis AX3. The left angle θ1L is greater than the right angle θ1R.

Further, as shown in FIG. 8, the vertical cross-sectional shape of the third light incident surface 23 is such that the light Ray3 from the third light source 33 emitted from the lower cylindrical surface 20a2 and emitted forward is condensed in the vertical direction. It is configured to irradiate in a downward direction at a predetermined angle with respect to the horizontal plane.

As a result of controlling the light Ray3 from the third light source 33 by the third light incident surface 23 as described above, a fourth partial light distribution pattern P2b (see FIG. 5(c)) is obtained as shown in FIG. 5(b). , the third partial light distribution pattern P2a is shorter in the horizontal direction, has a higher luminous intensity (see FIG. 6B), and is formed closer to the vertical line V than the third partial light distribution pattern P2a.

Next, the fourth light incident surface 24 will be described.

The fourth light incident surface 24 is a surface through which the light Ray4 from the fourth light source 34 enters the inner lens 20 . Light Ray4 from the fourth light source 34 that has entered the inner lens 20 through the fourth light incident surface 24 is emitted from the upper cylindrical surface 20a1.

FIG. 10 is an example of an optical path followed by light Ray4 from the fourth light source 34 in a horizontal cross section. The optical path followed by the light Ray4 from the fourth light source 34 substantially matches the optical path followed by the light Ray1 from the first light source 31 shown in FIG. 8 in side view.

A lens portion 204 (see FIGS. 1 and 3) between the fourth light incident surface 24 and the upper cylindrical surface 20a1 functions as a projection lens. The focal point F4 (reference point for optical design) of this lens portion 204 is located near the lower edge of the fourth light source 34, although not shown. Hereinafter, the reference axis passing through the focal point F4 and extending in the longitudinal direction of the vehicle will be referred to as a reference axis AX4. The reference axis AX4 substantially coincides with the reference axis AX1 shown in FIG. 8 in side view.

As shown in FIG. 3 , the fourth light incident surface 24 is configured as a convex curved surface facing the fourth light source 34 .

The surface shape of the fourth light incident surface 24 is such that light Ray4 (see FIG. 10) from the fourth light source 34 that enters the inner lens 20 from the fourth light incident surface 24 and exits from the upper cylindrical surface 20a1 (see FIG. 10) is mainly emitted. is irradiated (diffused) from the fourth light incident surface 24 to the side of the first light incident surface 21 adjacent in the left-right direction, forming a fourth partial light distribution pattern P2b shown in FIG. 5(c) in a predetermined area. configured as

Specifically, as shown in FIG. 10, the horizontal cross-sectional shape of the fourth light incident surface 24 is such that the light Ray4 emitted from the upper cylindrical surface 20a1 and emitted forward from the fourth light source 34 is directed horizontally, for example, , to the left angle .theta.2L range and right angle .theta.2R range with respect to the reference axis AX4. The left angle θ2L is smaller than the right angle θ2R.

The vertical cross-sectional shape of the fourth light incident surface 24 is the same vertical cross-sectional shape as the first light incident surface 21 shown in FIG. light Ray4 (see FIG. 8) is condensed in the vertical direction and projected downward at a predetermined angle with respect to the horizontal plane.

As a result of controlling the light Ray4 from the fourth light source 34 by the fourth light incident surface 24 as described above, a third partial light distribution pattern P2a (see FIG. 5B) is obtained as shown in FIG. 5C. A fourth partial light distribution pattern P2b that is shorter in the horizontal direction, lower in luminous intensity (see FIG. 6(c)), and farther from the vertical line V than is formed.

In the fog lamp unit of this embodiment, since the luminous intensities of the first light source 31, the second light source 32, the third light source 33, and the fourth light source 34 are the same, the first light incident surface 21, the second light incident surface 22, the The areas of the third light incident surface 23 and the fourth light incident surface 24 are assumed to be the same. The area of each light incident surface is preferably adjusted according to the luminous intensity of the light sources arranged opposite to each other. If it is large, the areas of the third light incident surface 23 and the fourth light incident surface 24 are made larger than the areas of the first light incident surface 21 and the second light incident surface 22 .

As a result of controlling the light Ray1 from the first light source 31 and the light Ray2 from the second light source 32 by the first light incident surface 21 and the second light incident surface 22 as described above, as shown in FIG. Light Ray1 from the first light source 31 and light Ray2 from the second light source 32, which are emitted from the front surface 20a of the inner lens 20, cross each other when viewed from above.

Similarly, as a result of controlling the light Ray3 from the third light source 33 and the light Ray4 from the fourth light source 34 by the third light incident surface 23 and the fourth light incident surface 24 as described above, the front surface 20a of the inner lens 20 The light Ray3 from the third light source 33 and the light Ray4 from the fourth light source 34, which are emitted from , cross each other in a top view.

By crossing in this way, for example, as shown in FIG. Light Ray1 from the first light source 31, light Ray2 from the second light source 32, light Ray3 from the third light source 33, and light Ray4 from the fourth light source 34 can be prevented from being blocked by the structure. .

In addition, as a result of controlling the light Ray1 from the first light source 31 and the light Ray2 from the second light source 32 by the first light incident surface 21 and the second light incident surface 22, A light distribution pattern P1a that forms a high-intensity irradiation area is configured, and a light distribution pattern P1b that forms a wide irradiation area to the left and right to an area away from the vertical line V in the light distribution pattern P1 by the second light source 32 is configured. By doing so, the light distribution pattern P1 can be formed.

Similarly, as a result of controlling the light Ray3 from the third light source 33 and the light Ray4 from the fourth light source 34 by the third light incident surface 23 and the fourth light incident surface 24, the third light source 33 controls the vicinity of the vertical line V In addition, the fourth light source 34 forms a light distribution pattern P2b that forms a wide irradiation area to the left and right to an area away from the vertical line V in the light distribution pattern P2. By configuring, the light distribution pattern P2 can be configured.

In the fog lamp unit 10 configured as described above, the user operates a changeover switch (not shown) provided in the vehicle compartment to simultaneously turn on the first light source 31 and the second light source 32 (the third light source 33 and the fourth light source). 34 is turned off), a white first fog lamp light distribution pattern P1 is formed.

When the first light source 31 is turned on, light Ray1 from the first light source 31 passes through the through hole H1 of the shade 40, enters the inner lens 20 from the first light incident surface 21, and exits from the upper cylindrical surface 20a1. illuminate forward.

At this time, as shown in FIG. 9, the light Ray1 emitted from the first light source 31 and emitted from the upper cylindrical surface 20a1 is caused by the action of the first light incident surface 21 to pass through the first light incident surface 21 in the laterally adjacent direction. 4 diffused toward the incident surface 24 side. Specifically, the light is diffused to the left angle θ1L range and the right angle θ1R range with respect to the reference axis AX1.

Further, as shown in FIG. 8, the light Ray1 from the first light source 31 emitted from the upper cylindrical surface 20a1 is condensed in the vertical direction by the action of the first light incident surface 21 and the upper cylindrical surface 20a1 and is projected onto the horizontal plane. The light is directed downward at a predetermined angle.

In other words, the light source image of the first light source 31 is inverted and projected forward by the inner lens 20 (lens portion 201).

As a result, the white first partial light distribution pattern P1a shown in FIG. 4B is formed. The first partial light distribution pattern P1a includes a cutoff line CL1a defined by the lower edge of the first light source 31 at the upper edge.

When the second light source 32 is turned on, light Ray2 from the second light source 32 passes through the through hole H2 of the shade 40, enters the inner lens 20 from the second light incident surface 22, and exits from the lower cylindrical surface 20a2. illuminate forward.

At this time, as shown in FIG. 10, the light Ray2 emitted from the second light source 32 and emitted from the lower cylindrical surface 20a2 is caused by the action of the second light incident surface 22 to enter the second light incident surface 22 adjacent to the second light incident surface 22 in the left-right direction. 3 Diffusion toward the incident surface 23 side. Specifically, the light is diffused to the left angle θ2L range with respect to the reference axis AX2, and is diffused to the right angle θ2R range.

Further, as shown in FIG. 8, the light Ray2 from the second light source 32 emitted from the lower cylindrical surface 20a2 is condensed in the vertical direction by the action of the second light incident surface 22 and the lower cylindrical surface 20a2 and is projected onto the horizontal plane. The light is directed downward at a predetermined angle.

In other words, the light source image of the second light source 32 is inverted and projected forward by the inner lens 20 (lens portion 202).

As a result, the white second partial light distribution pattern P1b shown in FIG. 4(c) is formed. The second partial light distribution pattern P1b includes a cutoff line CL1b defined by the lower edge of the second light source 32 at the upper edge.

By superimposing the first partial light distribution pattern P1a and the second partial light distribution pattern P1b formed as described above, as shown in FIG. A light pattern P1 is formed.

The first fog lamp light distribution pattern P1 has a relatively high center luminous intensity and is wide in the left-right direction, making it suitable for fog lamps.

Compared to the second partial light distribution pattern P1b, the first partial light distribution pattern P1a has a shorter horizontal dimension, a higher luminous intensity (see FIG. 6B), and is formed closer to the vertical line V. and a second partial light distribution pattern P1b that is longer in the horizontal direction, lower in luminous intensity (see FIG. 6C), and farther from the vertical line V than the first partial light distribution pattern P1a. are superimposed to form the first fog lamp light distribution pattern P1.

In the fog lamp unit 10 configured as described above, the user operates a changeover switch (not shown) provided in the vehicle compartment to simultaneously turn on the third light source 33 and the fourth light source 34 (the first light source 31 and the second light source). 32 is turned off), a yellow second fog lamp light distribution pattern P2 is formed.

When the third light source 33 is turned on, the light Ray3 from the third light source 33 is partially blocked by the shade 40 (shade portion 40a), passes through the through hole H3, and enters the inner lens 20 from the third light incident surface 23. The light is emitted from the lower cylindrical surface 20a2 and radiated forward.

At that time, as shown in FIG. 9, the light Ray3 from the third light source 33 emitted from the lower cylindrical surface 20a2 is caused by the action of the third light incident surface 23 to enter the third light incident surface 23 adjacent in the left-right direction. 2 diffused toward the incident surface 22 side. Specifically, the light is diffused to the left angle θ1L range and the right angle θ1R range with respect to the reference axis AX3.

Further, as shown in FIG. 8, the light Ray3 from the third light source 33 emitted from the lower cylindrical surface 20a2 is condensed in the vertical direction by the action of the third light incident surface 23 and the lower cylindrical surface 20a2 and is projected onto the horizontal plane. The light is directed downward at a predetermined angle.

In other words, the light source image of the third light source 33 whose area along the lower edge is covered with the shade portion 40a is inverted and projected forward by the inner lens 20 (lens portion 203).

As a result, a yellow third partial light distribution pattern P2a shown in FIG. 5B is formed. The third partial light distribution pattern P2a includes a cutoff line CL2a defined by the lower edge of the third light source 33 at the upper edge.

When the fourth light source 34 is turned on, the light Ray4 from the fourth light source 34 is partially blocked by the shade 40 (shade portion 40b), passes through the through hole H4, and enters the inner lens 20 through the fourth light incident surface 24. The light is emitted from the upper cylindrical surface 20a1 and radiated forward.

At that time, as shown in FIG. 10, the light Ray4 emitted from the fourth light source 34 and emitted from the upper cylindrical surface 20a1 is caused by the action of the fourth light incident surface 24 to enter a third light beam adjacent to the fourth light incident surface 24 in the left-right direction. 1 is diffused toward the incident surface 21 side. Specifically, the light is diffused to the left angle θ2L range with respect to the reference axis AX4, and is diffused to the right angle θ2R range.

Further, as shown in FIG. 8, light Ray4 emitted from the fourth light source 34 and emitted from the upper cylindrical surface 20a1 is condensed in the vertical direction by the action of the fourth light incident surface 24 and the upper cylindrical surface 20a1 and is projected onto the horizontal plane. The light is directed downward at a predetermined angle.

In other words, the light source image of the fourth light source 34 whose area along the lower edge is covered with the shade portion 40b is inverted and projected forward by the inner lens 20 (lens portion 204).

As a result, a yellow fourth partial light distribution pattern P2b shown in FIG. 5(c) is formed. The fourth partial light distribution pattern P2b includes a cutoff line CL2b defined by the lower edge of the fourth light source 34 at the upper edge.

By superimposing the third partial light distribution pattern P2a and the fourth partial light distribution pattern P2b formed as described above, a yellow second fog lamp light distribution pattern P2 is obtained as shown in FIG. is formed.

The second fog lamp light distribution pattern P2 has a relatively high central luminous intensity and is wide in the left-right direction, and is suitable for fog lamps.

Compared to the fourth partial light distribution pattern P2b, the third partial light distribution pattern P2a has a shorter horizontal dimension, a higher luminous intensity (see FIG. 6B), and is formed closer to the vertical line V. and a fourth partial light distribution pattern P2b that is longer in the horizontal direction, lower in luminous intensity (see FIG. 6C), and farther from the vertical line V than the third partial light distribution pattern P2a. are superimposed to form the second fog lamp light distribution pattern P2.

As described above, according to the present embodiment, the fog lamp light distribution patterns of different colors, that is, the white first fog lamp light distribution pattern P1 and the yellow second fog lamp light distribution pattern P2 are arranged in the same area. It is possible to provide the fog lamp unit 10 which can be formed, can be miniaturized, and has a monocular appearance.

The light distribution patterns for fog lamps of different colors can be formed in the same area by the first light source 31 and the second light source 32 emitting white light, and the third light source 33 and fourth light source 34 emitting yellow light. , and the first to fourth light incident surfaces 21 to 24 for controlling the light from the first to fourth light sources 31 to 34, respectively.

Instead of constructing a fog lamp unit for each emission color, one fog lamp unit 10 can be miniaturized by including one inner lens 20, the first and second light sources 31 and 32 with white emission color, and the light emission. This is due to the provision of the third light source 33 and the fourth light source 34 of yellow color. Therefore, for example, it is possible to realize a compact fog lamp unit 10 using an inner lens 20 with a diameter of 60 mm or less.

The monocular appearance is obtained by providing the first to fourth light incident surfaces 21 to 24 for controlling the light from the first to fourth light sources 31 to 34 respectively on the rear surface 20b of the inner lens 20 instead of the front surface 20a. It is due to

Further, according to the present embodiment, even when the first light source 31 and the second light source 32 are turned on simultaneously (the third light source 33 and the fourth light source 34 are turned off), the third light source 33 and the fourth light source 34 are turned on simultaneously. Since the entire inner lens 20 emits light even when the first light source 31 and the second light source 32 are turned off, the monocular appearance can be achieved.

The entire inner lens 20 emits light when the first light source 31 and the second light source 32 are simultaneously lit (or when the third light source 33 and the fourth light source 34 are simultaneously lit) because the first light source 31 and the The second light source 32 is arranged at one diagonal position of the rectangle, and the third light source 33 and the fourth light source 34, which emit yellow light, are arranged at the other diagonal position of the rectangle. is.

Further, according to the present embodiment, even if a structure such as the extension 80 is arranged in front of the fog lamp unit 10, the light Ray1 and the light Ray1 from the first light source 31 emitted from the front surface 20a of the inner lens 20 and It is possible to prevent the light Ray2 from the second light source 32, the light Ray3 from the third light source 33, and the light Ray4 from the fourth light source 34 from being blocked by the structure.

This is because, when the first light source 31 and the second light source 32 are turned on simultaneously, the light Ray1 from the first light source 31 and the light Ray2 from the second light source 32, which are emitted from the front surface 20a of the inner lens 20, cross each other when viewed from above. This is due to Similarly, when the third light source 33 and the fourth light source 34 are turned on simultaneously, the light Ray3 from the third light source 33 and the light Ray4 from the fourth light source 34, which are emitted from the front surface 20a of the inner lens 20, cross each other when viewed from above. This is due to

Further, according to the present embodiment, it is possible to form the white first fog lamp light distribution pattern P1 that has a relatively high central luminous intensity and is wide in the left-right direction and suitable for a fog lamp.

Compared to the second partial light distribution pattern P1b, the first partial light distribution pattern P1a has a shorter horizontal dimension, a higher luminous intensity, and is formed closer to the vertical line V, and the first partial light distribution pattern P1a. The second partial light distribution pattern P1b, which is longer in the horizontal direction than P1a, has a lower luminous intensity, and is formed farther from the vertical line V, is superimposed on the first fog lamp light distribution pattern P1. It is due to being formed.

Similarly, it is possible to form a yellow second fog lamp light distribution pattern P2 suitable for fog lamps, which has a relatively high central luminous intensity and is wide in the horizontal direction.

Compared to the fourth partial light distribution pattern P2b, the third partial light distribution pattern P2a has a shorter horizontal dimension, a higher luminous intensity, and is formed closer to the vertical line V. The second fog lamp light distribution pattern P2 is formed by being superimposed on the fourth partial light distribution pattern P2b, which is longer in the horizontal direction than P2a, has lower luminous intensity, and is formed farther from the vertical line. It is due to being

In addition, according to the present embodiment, it is possible to reduce the size of the inner lens 20 and thus the size of the fog lamp unit 10 .

This is because at least a part of the area where the light Ray1 from the first light source 31 is emitted and the area where the light Ray4 from the fourth light source 34 is emitted in the front surface 20a of the inner lens 20 overlap, and the inner lens 20 This is because at least a part of the area from which the light Ray2 from the second light source 32 is emitted and the area from which the light Ray3 from the third light source 33 is emitted in the front surface 20a overlap each other.

Therefore, in the front surface 20a of the inner lens 20, the area from which the light Ray1 from the first light source 31 is emitted does not overlap with the area from which the light Ray4 from the fourth light source 34 is emitted. The size of the inner lens 20, and thus the size of the fog lamp unit 10, is reduced compared to the case where the region where the light Ray2 from the second light source 32 is emitted and the region where the light Ray3 from the third light source 33 is emitted do not overlap. becomes possible.

Further, according to the present embodiment, the surface shapes of the first to fourth light incident surfaces 21 to 24 are such that the angles of incidence of the lights Ray1 to Ray4 from the first to fourth light sources 31 to 34 are relatively small. In other words, the shape of the inner lens 20 allows the lights Ray1 to Ray4 from the first to fourth light sources 31 to 34 to easily enter the inner lens 20 with little Fresnel loss.

This is because not only the first to fourth light incident surfaces 21 to 24 but also the cylindrical surfaces 20a1 and 20a2 are in charge of condensing the light from the first to fourth light sources 31 to 34 in the vertical direction. .

Further, by making the front surface 20a of the inner lens 20 cylindrical surfaces 20a1 and 20a2, that is, by making the horizontal cross-sectional shape of the front surface 20a of the inner lens 20 straight, the first to fourth light incident surfaces 21 to 24 can be formed. There is also the advantage that the configuration (design) is facilitated as described above. The same applies when the front surface 20a of the inner lens 20 is configured as a flat surface.

Next, a modified example will be described.

In the above embodiment, the first light source 31 and the second light source 32 are used as light sources emitting white light, and the third light source 33 and fourth light source 34 are used as light sources emitting yellow light. has been described, but is not limited to this.

FIG. 12 shows a modification of the arrangement of each light source.

For example, as shown in FIG. 12A, one light source (for example, the first light source 31) is used as a light source emitting white light, and one light source (for example, the third light source 33) is used as a light source emitting yellow light. ) may be used. In this case, although not shown, there are provided two light incident surfaces facing each other, one light source emitting white light and one light emitting light yellow. The surface shape of one of the light incident surfaces is such that the light from the first light source 31 that enters the inner lens 20 from the light incident surface, is emitted from the upper cylindrical surface 20a1, and is emitted forward is directed to a predetermined area. It is configured to form a white first fog lamp light distribution pattern P1. Similarly, the surface shape of the other light incident surface is such that the light from the third light source 33 that enters the inner lens 20 from the light incident surface, exits from the lower cylindrical surface 20a2, and illuminates forward is directed to a predetermined area. , a yellow second fog lamp light distribution pattern P2 is formed.

Although not shown, N1 light sources (N1 is an integer of 2 or more) are used as light sources emitting white light, and N2 light sources (N1 is an integer of 2 or more) are used as light sources emitting yellow light. good too. In this case, although not shown, N1 light incident surfaces and N2 light incident surfaces are provided so that N1 light sources with white emission color and N2 light sources with yellow emission color face each other.

For example, as shown in FIGS. 12B to 12D, three light sources (for example, light sources 31, 32, and 35) are used as light sources emitting white light, and three light sources emitting yellow light are used. One light source (eg, each light source 33, 34, 36) may be used. In this case, although not shown, six light incident surfaces are provided in which three light sources emitting white light and three light sources emitting yellow light face each other.

Further, in the above-described embodiment, an example in which the front surface 20a of the inner lens 20 includes the upper cylindrical surface 20a1 and the lower cylindrical surface 20a2 has been described, but the present invention is not limited to this. For example, the front surface 20a of the inner lens 20 may be flat (for example, a plane perpendicular to the reference axis AX1 or the like) or curved (for example, a lens surface convex forward).

Also, the front surface 20a of the inner lens 20 may include, for example, three cylindrical surfaces 20a1, 20a2, and 20a3 instead of two cylindrical surfaces, as shown in FIG. 12(c).

Further, the front surface 20a of the inner lens 20 may be radially divided around the front surface 20a, as shown in FIG. 12(d).

In the above embodiment, the first light source 31 and the second light source 32 are arranged at one diagonal position of the rectangle B, and the third light source 33 and the fourth light source 34 are arranged at the other diagonal position of the rectangle B. Although an example of placement has been described, the present invention is not limited to this.

For example, as shown in FIG. 12, light sources of different colors may be alternately arranged at the vertex positions of a polygon such as a hexagon.

All of the numerical values shown in the above embodiments are examples, and it is of course possible to use other appropriate numerical values.

Each above-mentioned embodiment is only a mere illustration in all respects. The present invention is not limitedly interpreted by the description of each of the above embodiments. The invention can be embodied in various other forms without departing from its spirit or essential characteristics.

DESCRIPTION OF SYMBOLS 10... Fog lamp unit 20... Inner lens 20a... Front surface 20a1... Upper cylindrical surface 20a2... Lower cylindrical surface 20b... Rear surface 21... First light-incident surface 22... Second light-incident surface 23... Third Light incident surface 24 Fourth light incident surface 30 Light source 31 First light source 32 Second light source 33 Third light source 34 Fourth light source 40 Shade 40a, 40b Shade portion , 50... Outer lens, 60... Housing, 70... Lamp chamber, 80... Extension, 90... Holding member, 201 to 204... Lens part

Claims (11)

an inner lens including a front surface and a rear surface on the opposite side thereof; a light source provided behind the inner lens for emitting light that passes through the inner lens and is irradiated forward to form a light distribution pattern for a fog lamp; In a fog lamp unit with
The light source includes a first light source and a second light source emitting light of a first color, and a third light source and a fourth light source emitting light of a second color,
The first light source and the second light source are arranged at one diagonal position of a rectangle in a front view,
The third light source and the fourth light source are arranged at the other diagonal positions of the rectangle,
The rear surface of the inner lens includes a first light incident surface, a second light incident surface, a third light incident surface, and a fourth light incident surface facing the first light source, the second light source, the third light source, and the fourth light source, respectively. including faces,
The surface shape of the first light incident surface is such that light from the first light source that enters the inner lens from the first light incident surface, is emitted from the front surface, and is irradiated forward is directed to a predetermined area. configured to form a first partial light distribution pattern constituting a light distribution pattern for a first fog lamp of a first color,
The surface shape of the second light incident surface is such that light from the second light source that enters the inner lens from the second light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. configured to form a second partial light distribution pattern that constitutes the light distribution pattern for the first fog lamp of the first color,
The surface shape of the third light incident surface is such that light from the third light source that enters the inner lens from the third light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. configured to form a third partial light distribution pattern that constitutes the light distribution pattern for the second fog lamp of the second color,
The surface shape of the fourth light incident surface is such that light from the fourth light source that enters the inner lens from the fourth light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. configured to form a fourth partial light distribution pattern that constitutes the light distribution pattern for the second fog lamp of the second color,
The first partial light distribution pattern has a smaller horizontal dimension than the second partial light distribution pattern and is formed near a vertical line of the first fog lamp light distribution pattern,
When the first light source and the second light source are turned on simultaneously, at least a part of the first partial light distribution pattern and the second partial light distribution pattern overlap to constitute the first fog lamp light distribution pattern. together with, the entire inner lens emits light,
The third partial light distribution pattern has a smaller horizontal dimension than the fourth partial light distribution pattern and is formed near a vertical line of the second fog lamp light distribution pattern,
When the third light source and the fourth light source are turned on simultaneously, at least a part of the third partial light distribution pattern and the fourth partial light distribution pattern overlap to form the second fog lamp light distribution pattern. together with, the entire inner lens emits light,
forming the light distribution pattern for the first fog lamp and the light distribution pattern for the second fog lamp in different colors and in the same shape in the same predetermined region;
fog lamp unit. 2. The fog lamp unit according to claim 1, wherein the horizontal cross-sectional shape of the front surface of the inner lens is a straight line. an inner lens including a front surface and a rear surface on the opposite side thereof; a light source provided behind the inner lens for emitting light that passes through the inner lens and is irradiated forward to form a light distribution pattern for a fog lamp; In a fog lamp unit with
The light source includes a first light source and a second light source emitting light of a first color, and a third light source and a fourth light source emitting light of a second color,
The first light source and the second light source are arranged at one diagonal position of a rectangle in a front view,
The third light source and the fourth light source are arranged at the other diagonal positions of the rectangle,
The rear surface of the inner lens includes a first light incident surface, a second light incident surface, a third light incident surface, and a fourth light incident surface facing the first light source, the second light source, the third light source, and the fourth light source, respectively. including faces,
The surface shape of the first light incident surface is such that light from the first light source that enters the inner lens from the first light incident surface, is emitted from the front surface, and is irradiated forward is directed to a predetermined area. configured to form a first partial light distribution pattern constituting a light distribution pattern for a first fog lamp of a first color,
The surface shape of the second light incident surface is such that light from the second light source that enters the inner lens from the second light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. configured to form a second partial light distribution pattern that constitutes the light distribution pattern for the first fog lamp of the first color,
The surface shape of the third light incident surface is such that light from the third light source that enters the inner lens from the third light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. configured to form a third partial light distribution pattern that constitutes the light distribution pattern for the second fog lamp of the second color,
The surface shape of the fourth light incident surface is such that light from the fourth light source that enters the inner lens from the fourth light incident surface, is emitted from the front surface, and is irradiated forward is directed to the predetermined area. configured to form a fourth partial light distribution pattern that constitutes the light distribution pattern for the second fog lamp of the second color,
The front surface of the inner lens includes an upper cylindrical surface facing the first light incident surface and the fourth light incident surface and a lower cylindrical surface facing the second light incident surface and the third light incident surface; including
The fog lamp unit, wherein the upper cylindrical surface and the lower cylindrical surface are cylindrical surfaces each having a cylinder axis extending in a horizontal direction. The surface shape of the first light incident surface is such that light from the first light source that enters the inner lens from the first light incident surface, is emitted from the upper cylindrical surface, and is projected forward is the predetermined light incident surface. configured to form the first partial light distribution pattern in the region,
The surface shape of the second light incident surface is such that the light from the second light source that enters the inner lens from the second light incident surface, is emitted from the lower cylindrical surface, and is emitted forward is the predetermined shape. configured to form the second partial light distribution pattern in the region,
The surface shape of the third light incident surface is such that the light from the third light source that enters the inner lens from the third light incident surface, is emitted from the lower cylindrical surface, and is irradiated forward is the predetermined shape. configured to form the third partial light distribution pattern in the region,
The surface shape of the fourth light incident surface is such that the light from the fourth light source that enters the inner lens from the fourth light incident surface, is emitted from the upper cylindrical surface, and is emitted forward is the predetermined shape. 4. The fog lamp unit of claim 3, configured to form the fourth partial light distribution pattern in an area. When the fog lamp unit is mounted on a vehicle, the first light source, the third light source, and the first light entrance surface and the third light entrance surface are arranged far from the center of the vehicle in the vehicle width direction,
When the fog lamp unit is attached to a vehicle, the second light source, the fourth light source, and the second light entrance surface and the fourth light entrance surface are arranged near the center of the vehicle in the vehicle width direction. The fog lamp unit according to any one of claims 1 to 4. an inner lens including a front surface and a rear surface on the opposite side thereof; a light source provided behind the inner lens for emitting light that passes through the inner lens and is irradiated forward to form a light distribution pattern for a fog lamp; In a fog lamp unit with
The light source includes a first light source and a second light source emitting light of a first color, and a third light source and a fourth light source emitting light of a second color,
The first light source and the second light source are arranged at one diagonal position of a rectangle in a front view,
The third light source and the fourth light source are arranged at the other diagonal positions of the rectangle,
The rear surface of the inner lens includes a first light incident surface, a second light incident surface, a third light incident surface, and a fourth light incident surface facing the first light source, the second light source, the third light source, and the fourth light source, respectively. including faces,
When the fog lamp unit is mounted on a vehicle, the first light source, the third light source, and the first light entrance surface and the third light entrance surface are arranged far from the center of the vehicle in the vehicle width direction,
When the fog lamp unit is mounted on a vehicle, the second light source and the fourth light source, and the second light entrance surface and the fourth light entrance surface are arranged near the center of the vehicle in the vehicle width direction,
The surface shape of the first light incident surface is such that light from the first light source that enters the inner lens from the first light incident surface, is emitted from the front surface, and is irradiated forward is directed to the first incident surface. The light surface is irradiated to the adjacent fourth light incident surface side to form a first partial light distribution pattern constituting the first fog lamp light distribution pattern of the first color in a predetermined area,
The surface shape of the second light incident surface is such that the light from the second light source that enters the inner lens from the second light incident surface and is emitted from the front surface and radiated forward is directed to the second light incident surface. A second partial light distribution pattern that forms a first fog lamp light distribution pattern of the first color is formed in the predetermined area by irradiating the third light incident surface side adjacent to the light surface,
The surface shape of the third light incident surface is such that light from the third light source that enters the inner lens from the third light incident surface and is emitted from the front surface and radiated forward is directed to the third light incident surface. The light surface is irradiated to the adjacent second light incident surface side to form a third partial light distribution pattern constituting the light distribution pattern for the second fog lamp of the second color in the predetermined area,
The surface shape of the fourth light incident surface is such that light from the fourth light source that enters the inner lens from the fourth light incident surface, is emitted from the front surface, and is irradiated forward is directed to the fourth light incident surface. A fourth partial light distribution pattern that constitutes a light distribution pattern for the second fog lamp of the second color is formed in the predetermined area by irradiating the adjacent first light incident surface side of the light surface. fog lamp unit. the first partial light distribution pattern has a shorter dimension in the left-right direction and a higher luminous intensity than the second partial light distribution pattern, and is formed closer to a vertical line;
7. The fog lamp unit according to claim 6, wherein said third partial light distribution pattern has a shorter horizontal dimension, higher luminous intensity, and is formed closer to a vertical line than said fourth partial light distribution pattern. the first partial light distribution pattern and the third partial light distribution pattern are respectively formed in the same area in the predetermined area with the same size, the same shape, and the same luminous intensity distribution;
8. The second partial light distribution pattern and the fourth partial light distribution pattern are each formed in the same area in the predetermined area with the same size, shape, and luminous intensity distribution. Fog lamp unit as described above. At least a part of a region of the front surface of the inner lens where light from the first light source and a region where light from the fourth light source are emitted overlap;
9. The method according to any one of claims 1 to 8, wherein at least a part of the front surface of the inner lens where the light from the second light source and the light from the third light source are overlapped. Fog lamp unit as described. the first light incident surface is configured as a curved surface convex toward the first light source;
the second light incident surface is configured as a curved surface convex toward the second light source;
the third light incident surface is configured as a curved surface convex toward the third light source;
10. The fog lamp unit according to any one of claims 1 to 9, wherein the fourth light incident surface is configured as a curved surface convex toward the fourth light source. an inner lens including a front surface and a rear surface on the opposite side thereof; a light source provided behind the inner lens for emitting light that passes through the inner lens and is irradiated forward to form a light distribution pattern for a fog lamp; In a fog lamp unit with
The light source includes N1 (N1 is an integer equal to or greater than 2) first light sources including first semiconductor light emitting elements emitting light of a first color and second semiconductor light emitting elements emitting light of a first color, and third semiconductor light emitting elements emitting light of a second color. N2 (N2 is an integer of 2 or more) second light sources including the element and the fourth semiconductor light emitting element,
the rear surface of the inner lens includes N1 first light incident surfaces and N2 second light incident surfaces facing the N1 first light sources and the N2 second light sources, respectively;
The surface shapes of the N1 first light incident surfaces are such that the light from the first light source that enters the inner lens from the first light incident surfaces and is emitted from the front surface and radiated forward is and forming a partial light distribution pattern that constitutes the light distribution pattern for the first fog lamp of the first color in a predetermined area,
The surface shapes of the N2 second light incident surfaces are such that the light from the second light source that enters the inner lens from the second light incident surfaces and is emitted from the front surface and radiated forward is and forming a partial light distribution pattern constituting the light distribution pattern for the second fog lamp of the second color in the predetermined area,
At least a part of an area of the front surface of the inner lens from which the light from the N1 first light sources is emitted and an area from which the light from the N2 second light sources is emitted overlap,
The first light incident surface faces the respective semiconductor light emitting elements such that the light emitted from each of the first semiconductor light emitting element and the second semiconductor light emitting element light sources crosses when viewed from the top, and the light emitting surfaces of the respective semiconductor light emitting elements. Having a plurality of light incident surfaces configured as convex curved surfaces toward the element,
The second light incident surface faces the semiconductor light emitting elements such that the light emitted from each of the third semiconductor light emitting element and the light emitted from the fourth semiconductor light emitting element light sources crosses when viewed from above, and faces the respective semiconductor light emitting elements. Having a plurality of light incident surfaces configured as convex curved surfaces toward the element,
When the N1 first light sources are turned on, the predetermined area is irradiated with the light distribution pattern for the first fog lamp in the first color,
When the N2 second light sources are turned on, the predetermined area is irradiated with the second fog lamp light distribution pattern in a second color in the same shape as the first fog lamp light distribution pattern,
fog lamp unit.

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